CN114992333B - Loop water temperature control valve - Google Patents
Loop water temperature control valve Download PDFInfo
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- CN114992333B CN114992333B CN202210796246.9A CN202210796246A CN114992333B CN 114992333 B CN114992333 B CN 114992333B CN 202210796246 A CN202210796246 A CN 202210796246A CN 114992333 B CN114992333 B CN 114992333B
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- temperature sensing
- valve
- shell
- cylinder part
- sensing body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The loop water temperature control valve comprises a regulating valve and a temperature control head connected to the regulating valve, wherein the regulating valve comprises a valve body and a valve core; the temperature control head comprises a shell, a temperature sensing body is arranged in the shell, a rebound blocking cap is sleeved outside the temperature sensing body, a return spring is arranged between the rebound blocking cap and the bottom of the shell, and the rebound blocking cap is pressed on the temperature sensing body by the return spring; the upper end of the temperature sensing body is contacted with a fixed part, the bottom is used as a movable surface, the movable surface is connected with the valve rod through the heat conduction adapter, a guide cylinder part extending from the through hole to the inside of the shell is arranged on the pressure cap of the valve core, and part of the temperature sensing body and the whole heat conduction adapter are in coaxial clearance fit with the guide cylinder part. According to the invention, the heat energy can be fully utilized, and compared with a radiator or floor heating without a backwater temperature control valve, the control valve provided by the invention saves 20% -30% of heat under the same condition; the arrangement of the connecting body enables the overall structure to be compact in layout and reduces the installation difficulty.
Description
Technical Field
The invention relates to the field of heating and ventilation, in particular to a loop water temperature control valve which is used for controlling the heat dissipation temperature of a heating and ventilation system by sensing the flow of a fluid medium in a temperature control pipeline of the medium in the heating system so as to achieve the purpose of fully utilizing heating resources.
Background
The backwater temperature control valve is arranged on each group of radiators or backwater branch pipes of the floor heating system, and can control the backwater temperature of the radiators or the floor heating so as to achieve the balance of waterpower and heat. Because the heating system is a closed loop, the water flow direction is that the boiler is used as a heat supply water source and then flows through the water collector and the cooling fin or the floor heater in sequence, and then flows back to the boiler for heating.
Because the elapsed cooling fin time is too short, especially in the case of too high pressure in the system, the heat can quickly flow back to the boiler, the heat is not fully released, and the waste is obviously too large; at present, the stability of fluid pressure can be realized through a control valve, and the opening degree of a control valve rod is controlled in a feedback manner through sensing the pressure change of fluid through components such as a spring and the like so as to maintain the stability of flow. However, in practice, the temperature of the fluid is not constant, so that the heat dissipation stability of the fluid after passing through the heat dissipation fins cannot be guaranteed even if the control flow is stable, it can be determined that the change of the temperature of the fluid finally reacts to the temperature of the environment where the fluid is located, based on this, there is a temperature sensing component added to sense the temperature of the environment and further feedback the opening degree of the control valve rod, for example, a temperature control head is added to the control valve, even if the temperature control head disclosed by the application number CN104514913B is so, the description of the background section of the specification can refer to the current prior art that "the temperature control head comprises a temperature sensor, which is usually a liquid sensor; a temperature change of the environment causes a subsequent volume change of the liquid contained in the sensor, which in turn causes a displacement of the internal mechanism, wherein a subsequent closure of the valve or orifice is coupled to the device; this eventually generates a modulation of the flow of heat transfer fluid into the heating body, and subsequently of the variation of the heat delivered by the latter ", knowing that what is currently obtained by the temperature control head is a stable installation environment, i.e. the temperature of the air in the vicinity.
It is needless to say that the temperature control head is mounted on the valve body of the control valve, the heating medium fluid flows in the valve body, the valve core of the valve body is made of metal, the valve core is a good conductor of heat, the temperature control valve is equivalent to a heat source in the environment, a thermal field is formed in the environment, and the temperature control head is positioned in the thermal field, so that the environmental temperature sensed by the temperature control head cannot be accurately reflected to the environmental temperature.
In short, the present invention provides a new way to control the opening of the valve rod according to the obtained fluid temperature feedback from the perspective of directly obtaining the fluid temperature, so as to achieve the purpose of controlling the flow according to the fluid temperature.
Disclosure of Invention
According to the problems set forth in the background art, the invention provides a loop water temperature control valve, which is characterized in that the temperature of a heating and ventilation fluid medium is transmitted to a temperature sensing body through a heat conduction adapter, and the opening and closing of the valve are automatically controlled or the opening of the valve is automatically adjusted by utilizing the sensitivity of the temperature sensing body to the temperature. The present invention is further described below.
The loop water temperature control valve comprises a regulating valve and a temperature control head connected to the regulating valve, wherein the regulating valve comprises a valve body and a valve core; the temperature control head comprises a shell connected to the valve body of the regulating valve, a through hole is formed in the bottom of the shell, a temperature sensing body is arranged in the through hole, a rebound blocking cap is sleeved outside the temperature sensing body, a return spring sleeved outside the temperature sensing body is arranged between the rebound blocking cap and the bottom of the shell, an expansion part protruding radially is arranged on the temperature sensing body, and the rebound blocking cap is pressed on the expansion part by the return spring; the upper end of the temperature sensing body is contacted with a fixed part, the bottom of the temperature sensing body is used as a movable surface, the movable surface is connected to the valve rod through the heat conducting adapter, a guide cylinder part extending from the through hole to the inside of the shell is arranged on the pressure cap of the valve core, and part of the temperature sensing body and the whole heat conducting adapter are in coaxial clearance fit with the guide cylinder part.
Further, an inner cylinder part is integrally arranged on the rebound blocking cap, the inner wall of the lower end of the inner cylinder part is in coaxial clearance fit with the guide cylinder part of the pressing cap, and a cavity capable of slowing down heat exchange with the outside is formed between the rebound blocking cap and the pressing cap.
Further, a sleeve part is arranged at the edge of the through hole at the bottom of the shell, the sleeve part is coaxial with the guide cylinder part, and the lower section sleeve of the return spring is arranged outside the sleeve part.
Further, the fixed component is an overvoltage protection component which is indirectly connected to the inner wall of the shell through a connecting body; the overvoltage protection assembly comprises an upper overvoltage piece, a lower overvoltage piece and an overvoltage spring, two ends of the overvoltage spring respectively abut against the space between the upper overvoltage piece and the lower overvoltage piece, and the top of the temperature sensing body abuts against the lower overvoltage piece.
Further, a protection adapter is sleeved on the top of the temperature sensing body, and the temperature sensing body indirectly abuts against the lower pressing piece due to the existence of the protection adapter and is used for protecting the temperature sensing body.
Further, the upper pressing piece and the lower pressing piece respectively comprise an integrally connected shaft barrel part and a convex ring part which is arranged at the end part of the shaft barrel and protrudes radially, two ends of the pressing spring are contacted with the convex ring part, the shaft barrel part of the lower pressing piece is arranged in the shaft barrel part of the upper pressing piece, and the adapter is arranged in the shaft barrel part of the lower pressing piece.
Further, the top surface of the connecting body and a step surface form a tooth cylinder part, the overvoltage protection component is arranged in the tooth cylinder part, the overvoltage protection component further comprises a screw cylinder part integrally connected with the tooth cylinder part, a plurality of partitions are arranged on the screw cylinder part, and the partitions divide the screw cylinder part into a plurality of elastic parts with threads on the outer surface.
Further, the shaft barrel part of the upper pressing piece is radially inwards provided with an upper clamping protrusion, the lower pressing piece is radially outwards provided with a lower clamping protrusion, the lower clamping protrusion is positioned above the upper clamping protrusion, and the two clamping protrusions are abutted together under the action of the pressing spring. The overvoltage protection assembly is formed into a stable installation whole through the functions of the overvoltage spring and the upper and lower clamping protrusions.
Further, the bottom of the shell is provided with a convex inner connecting cylinder, the inner wall of the inner connecting cylinder is provided with threads, and the screw cylinder part is in threaded fit with the inner connecting cylinder.
Further, the inner wall of the screw cylinder part is provided with an annular clamp spring groove, a clamp spring is arranged in the clamp spring groove, and/or the outer edge surface of the rebound blocking cap is in contact with the inner wall of the screw cylinder part. The rebound blocking cap and the clamp spring are used for limiting the radial inward deformation of the screw cylinder part when the screw cylinder part is in threaded connection with the inner connecting cylinder.
Further, the shell is divided into an upper shell and a lower shell which are separated, a tooth slot is formed in the inner wall of the upper shell, a rack is arranged on the outer surface of the tooth cylinder part, the rack is matched with the upper tooth slot, and the upper shell and the connecting body form a synchronous rotating body.
Further, the inner wall of the shaft barrel part of the lower overpressure piece is in threaded fit with an adjusting nut, the protection adapter is abutted upwards against the adjusting nut, and the protection adapter is partially or completely embedded in the adjusting nut. The adjusting nut aims at calibrating the dimensional errors of the temperature sensing body, the heat conducting adapter, the protection adapter and the valve core at any scale temperature.
Further, a chute is arranged on the shaft barrel part of the upper pressing piece, an integrated reinforcing rib is arranged between the shaft barrel part of the lower pressing piece and the convex ring part, the reinforcing rib penetrates through the chute, the upper pressing piece is clamped with the connecting body, and the upper shell, the connecting body and the two overpressure pieces for overpressure protection form a synchronous body. The lower pressure piece is intended to be indirectly connected to the lower housing, so that the adjusting nut is height-adjustable.
Further, the top surface of the connecting body is provided with a plurality of positioning grooves, and the convex ring part of the upper pressing piece is integrally provided with positioning columns which are matched with the positioning grooves.
The beneficial effects are that: compared with the prior art, the control valve provided by the invention can fully utilize heat energy, and compared with a radiator or floor heating without a backwater temperature control valve, the control valve provided by the invention saves 20% -30% of heat under the same condition through experimental comparison; the arrangement of the connecting body enables the overall structure to be compact in layout and reduces the installation difficulty.
Drawings
Fig. 1: the structure of the control valve is schematically shown;
fig. 2: a structural cross-sectional view of the control valve of the present invention;
fig. 3: another structural cross-sectional view of the control valve of the present invention;
Fig. 4: the structure schematic diagram of the connector and the overvoltage protection component;
fig. 5: a schematic structural diagram of the overvoltage protection component;
fig. 6: a structural cross-sectional view of the overpressure protection assembly;
In the figure: the regulating valve 1, the temperature control head 2, the pressure cap 3, the guide cylinder 301, the valve body 4, the valve rod 5, the housing 6, the outer connecting cylinder 601, the trip portion 602, the through hole 603, the sleeve portion 604, the inner cylinder 605, the upper housing 606, the lower housing 607, the tooth groove 608, the connecting cap 7, the trip portion 701, the temperature sensing body 8, the expanding portion 801, the rebound blocking cap 9, the inner cylinder 901, the return spring 10, the heat conducting adapter 11, the clamping groove 111, the cavity 12, the connecting body 13, the top surface 131, the step surface 132, the tooth cylinder portion 133, the screw cylinder portion 134, the partition 135, the clamp spring groove 136, the rack 137, the positioning groove 138, the upper pressing member 14, the shaft cylinder portion 141, the convex ring portion 142, the upper clamping protrusion 143, the slide groove 144, the positioning column 145, the lower pressing member 15, the lower clamping protrusion 151, the reinforcing rib 152, the overpressure spring 16, the protection adapter 17, the clamp spring 18, and the regulating nut 19.
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to fig. 1-6.
Referring to fig. 1-3, a loop water temperature control valve comprises a regulating valve 1 arranged in a heating loop and used for controlling flow and a temperature control head 2 connected to the regulating valve, wherein the regulating valve 1 is of the prior art, and comprises a valve body and a valve core arranged in the valve body 4, the valve core comprises a pressure cap 3 connected to the valve body and a valve rod 5 with one end exposed out of the valve body 4, the opening degree of the regulating valve 1 can be regulated by controlling the exposed length of the valve rod 5, the flow of the current regulating valve 1 is controlled, and the embodiment is not elaborated based on the prior art by the regulating valve 1. The temperature control head 2 is in threaded connection with the valve body 4 of the regulating valve 1, senses the temperature of fluid in a heating loop through direct contact with the valve rod 5, and further feeds back and controls the opening of the valve rod 5.
The temperature control head 2 includes a housing 6 connected to a valve body of the regulating valve, and the connection manner may be any connection manner, which is not limited in this embodiment: the top of the valve body of the regulating valve 1 is a threaded connection end, the shell 6 is connected to the valve body through the connecting cap 7 in a threaded manner, the top of the connecting cap 7 is higher than the valve body after installation, a radial inward clamping hook part 701 is arranged on the connecting cap 7, the shell 6 is integrally provided with a protruding outer connecting cylinder 601, the end part of the outer connecting cylinder 601 is provided with a radial outward clamping hook part 602, the clamping hook part 701 is matched with the clamping hook part 302 in an up-down contact manner, and the purpose is that the connecting cap 7 has a vertical limiting function on the shell 6. During installation, the connecting cap 7 is connected to the valve body in a threaded manner in advance, then the shell 6 is pressed downwards from the upper part of the valve body, the outer connecting cylinder 601 is aligned to the connecting cap 7, after the clamping hook part 602 contacts the clamping hook part 701, the clamping hook part 701 is deformed first and then is restored by the force generated by interaction, and clamping connection installation is completed.
The bottom of the housing 6 is provided with a through hole 603 for lifting movement of the valve rod, the housing 6 is internally provided with a temperature sensing body 8, the temperature sensing body 8 is essentially a temperature sensor, the temperature change of the environment causes the subsequent volume change of the temperature sensing medium contained in the sensor, the change then causes the end face to shift, the shift is transferred to the valve rod 5 to change the length of the valve rod exposed to the valve body 4, and then the opening degree of the valve body is changed, the regulation and control of the flow of the heat transfer fluid entering the valve body are finally generated, and the change of the heat transferred by the fluid is changed.
The upper end of the temperature sensing body 8 is contacted with a fixed part, the fixed part prevents the temperature sensing body 8 from deforming upwards, the bottom surface of the temperature sensing body 8 is a movable output surface, namely, the expansion and contraction displacement of the temperature sensing body 8 caused by temperature variation is conducted to the movable surface of the bottom surface, and finally, the expansion and contraction displacement is reflected on the opening of the valve rod.
The temperature-sensitive medium in the temperature sensing body 8 is preferably paraffin, the travel of the paraffin is 0.1 mm/DEG C, namely, the travel change of the reaction on the end face of the temperature sensing body 8 is 1mm when the temperature of the fluid rises or falls by 1 ℃.
The temperature sensing body 8 is sleeved with a rebound blocking cap 9, a return spring 10 sleeved outside the temperature sensing body 8 is arranged between the rebound blocking cap 9 and the bottom of the shell 6, an expansion part 801 protruding radially is arranged on the temperature sensing body 8, the return spring 10 is always in a compressed state, namely, upward elastic force is always generated, and the elastic force aims at pressing the rebound blocking cap 9 on the expansion part 801. When the temperature of the fluid of the temperature sensing body 8 rises, the displacement output of the valve rod is generated, the output further compresses the return spring 10, and the return spring 10 absorbs the displacement and compresses the rebound blocking cap 9 on the expansion part 801 after the temperature sensing body 8 falls back.
The movable surface at the bottom of the temperature sensing body 8 is isolated from the valve rod 4 through a heat conduction adapter 11, the heat conduction adapter 11 is a good heat conductor, two end surfaces are respectively contacted with the temperature sensing body 8 and the valve rod 4, and the heat conduction adapter is used as a heat conduction channel from the valve rod to the temperature sensing body, so that the aim of reducing large positive pressure generated by the direct action of the valve rod on the temperature sensing body is achieved to protect the temperature sensing body.
The heat conducting adapter 11 in this embodiment is a copper block, the bottom surface of which is provided with a clamping groove 111 for adapting to the valve rod 4, the top surface is in surface contact with the bottom surface of the temperature sensing body 8, the strength of the copper heat conducting adapter meets the stress generated by the action of the copper heat conducting adapter and the valve rod, meanwhile, the bottom surface and the ring surface of the clamping groove increase the heat conducting area with the valve rod, and the contact between the whole top surface and the temperature sensing body reduces the pressure to the temperature sensing body and increases the heat conducting area.
The press cap 3 of the valve core comprises a guide cylinder 301 extending from the through hole 603 to the inside of the shell 6, a part of the temperature sensing body 8 and the whole heat conducting adapter 11 are in coaxial clearance fit with the guide cylinder, the guide cylinder aims at limiting and guiding the movement of the temperature sensing body and the heat conducting adapter, and the clearance fit provides an airflow circulation channel of the upper cavity and the lower cavity in the movement process of the heat conducting adapter.
The stroke of the temperature sensing body 8 is larger than the stroke of the valve rod, and the stroke of the valve rod is set according to the opening of the valve body, so that the temperature sensing body can adjust the valve rod within the full opening range of the valve body. In the stroke range of the valve rod, when the temperature of the fluid rises, the fluid is transmitted to the temperature sensing body through the valve rod and the heat conduction adapter, the temperature sensing body expands to generate displacement output for downwards pressing the valve rod, the return spring 10 is compressed, and the spring in the valve core is also compressed in the process of pressing the valve rod 4; when the temperature of the fluid drops, the temperature sensing body is retracted, the return spring 10 resets to compress the rebound blocking cap 9 on the temperature sensing body 8, the valve rod is lifted to be contacted with the heat conduction adapter under the reset of the valve core spring, and when the retraction degree of the temperature sensing body exceeds the stroke of the valve rod, the return spring 10 can still compress the rebound blocking cap 9 on the temperature sensing body 8 through elasticity.
The inner cylinder 901 is integrally arranged on the rebound blocking cap 9, the inner wall of the lower end of the inner cylinder 901 is in coaxial clearance fit with the guide cylinder 301 of the pressing cap 3, a cavity 12 capable of slowing down heat exchange with the outside is formed between the rebound blocking cap 9 and the pressing cap 3, and a circulation channel is formed between the cavity 12 and the outside, so that pressure change caused by movement of a heat conduction adapter is avoided, the movement of the heat conduction adapter is blocked, the cavity is only bent, the movement rate of the heat conduction adapter caused by slow temperature change of a heating and ventilation fluid medium is slow, the rebound blocking cap 9 and the pressing cap 3 can be injection molding pieces, and the rebound blocking cap has certain heat insulation performance, and is used for keeping the temperature of the cavity 12 close to the fluid temperature and blocking the interference of the located outside air environment.
The bottom of the shell 6 is provided with a sleeve part 604 integrally connected with the edge of the through hole 603, the sleeve part 604 is coaxial with the guide cylinder part 301, and the lower section sleeve of the return spring 10 is arranged outside the sleeve part 604.
According to the above description, the upper end of the temperature sensing body 8 contacts a fixed component, and the travel of the temperature sensing body exceeds the travel of the valve rod, after the temperature rises to the point that the valve rod completely closes the valve body flow channel, the surface of the valve body end surface still contacts the fluid, when the temperature of the fluid continues to rise, the temperature sensing body continuously generates downward displacement output, and at the moment, the temperature sensing body is easily damaged due to the fact that the valve rod has no downward movement degree of freedom and is subjected to the extremely high internal stress. In this embodiment, the fixing member is set to be a deformable overvoltage protection component for protecting the temperature sensing body when the temperature exceeds the adjustment range, and the overvoltage protection component is built in the housing 6 and indirectly connected to the inner wall of the housing through the connecting body 13.
Referring to fig. 3-6, the overpressure protection assembly is built-in with a connector 13, and comprises an upper overpressure piece 14, a lower overpressure piece 15 and an overpressure spring 16, wherein two ends of the overpressure spring 16 respectively abut against the upper overpressure piece 14 and the lower overpressure piece 15, and the top of the temperature sensing body 8 abuts against the lower overpressure piece 15. The connecting body 13 is fixedly connected with the shell 6, the height position of the connecting body is constant, the upper overpressure piece 14 in the overpressure protection component is tightly attached to the connecting body 13 under the elasticity of the overpressure spring 16, when the external environment temperature is higher than the temperature range in which the temperature control head reliably works, the temperature sensing body pushes the valve rod downwards to completely close the valve body flow passage, the deformation output direction is reversely conducted upwards, the overpressure piece 13 positioned below is pushed to compress the overpressure spring 16, namely, the overpressure spring 16 is used for absorbing the displacement output quantity of the temperature sensing body which is higher than the adjustable temperature range, and the temperature sensing body is protected.
The top of the temperature sensing body 8 is sleeved with a protection adapter 17, and the temperature sensing body indirectly abuts against the lower pressing piece 15 due to the existence of the protection adapter and plays a role in protecting the temperature sensing body.
The upper pressing piece 14 and the lower pressing piece 15 comprise an integrally connected shaft barrel part 141 and a convex ring part 142 which is arranged at the end part of the shaft barrel and radially protrudes, two ends of the pressing spring 15 are contacted with the convex ring part 142, the two shaft barrel parts 141 are coaxially arranged, the shaft barrel part of the lower pressing piece 15 is positioned inside the shaft barrel part of the upper pressing piece 14, and the temperature sensing body 8 and the protection adapter 17 sleeved on the temperature sensing body are arranged inside the shaft barrel part 141 of the lower pressing piece 15.
Based on the foregoing description, the overvoltage protection component is disposed in the connecting body 13, and the overvoltage spring 16 is always in a compressed state within the temperature adjustable range, so that the elasticity of the overvoltage spring is required to be ensured to have no effect on the temperature sensing body within the temperature adjustable range, and therefore, a structural component for limiting the overvoltage protection component is disposed on the connecting body 13. In this embodiment, the overpressure protection component forms a tooth cylinder 133 through the top surface 131 and a step surface 132, the overpressure protection component is built in the tooth cylinder 133, the upper overpressure component 14 is tightly attached to the top surface 131 under the elasticity of the overpressure spring 15, and the lower overpressure component 15 is tightly attached to the step surface 132 under the elasticity of the overpressure spring 15, i.e. the top surface 131 and the step surface 132 bear the elasticity of the overpressure spring to limit the overpressure protection component.
In order to quickly install the overvoltage protection component in the connector 13, the following scheme is adopted in this embodiment: the connecting body 13 further comprises a screw cylinder portion 134 integrally connected with the tooth cylinder portion 133, a plurality of axial slotted partitions 135 are arranged on the screw cylinder portion 134, the partitions 135 divide the screw cylinder portion 134 into a plurality of elastic portions with threads on the outer surface, each portion has radial deformation characteristics, when the connecting body is installed, radially outward force is applied to each elastic component to expand the aperture of the screw cylinder portion 134, and the overpressure protection component is pushed to the tooth cylinder portion from the screw cylinder portion with the expanded aperture.
The shaft barrel portion 141 of the upper overpressure piece 14 is radially inwards provided with an upper clamping protrusion 143, the lower overpressure piece 15 is radially outwards provided with a lower clamping protrusion 151, the lower clamping protrusion is positioned above the upper clamping protrusion, two clamping protrusions are abutted together under the action of the overpressure spring 15, the overpressure protection component is formed into a stable whole through the action of the overpressure spring and the upper and lower clamping protrusions, the overpressure protection component can be integrally placed when being placed into the gear barrel portion from the screw barrel portion, and the protection function of the overpressure protection component is not reduced.
As can be seen from the foregoing, the overvoltage protection assembly is directly or indirectly connected to the inner wall of the housing as a fixing component, so as to maintain the overvoltage protection assembly to be highly fixed, and the embodiment uses the threads provided on the screw barrel portion 134 to be connected to the housing, and adopts the following technical scheme: the bottom of the housing 6 is provided with a convex inner cylinder 605, the inner wall of the inner cylinder 605 is provided with threads, and the screw cylinder part 134 is in threaded fit with the inner cylinder 605.
The portion of the screw barrel 134 separated by the partition 135 has elasticity, and in order to ensure the stability of the threaded connection, the following scheme is adopted in this embodiment, based on the existence of the partition 135 and the characteristics of elasticity: the inner wall of the screw barrel 134 is provided with an annular snap spring groove 136, a snap spring 18 is arranged in the snap spring groove 136, and/or the outer edge surface of the rebound blocking cap 9 is contacted with the inner wall of the screw barrel 134, and the rebound blocking cap 9 and the snap spring 18 both have the function of limiting the screw barrel to deform radially inwards when in threaded connection with the inner connecting barrel.
The height of the connector 13 can be changed by changing the number of the thread engagement teeth, the height of the temperature sensing body 8 is further changed, different heights correspond to different adjusting temperatures, a plurality of temperature adjusting points are arranged in the embodiment, different temperature points are used for different heights of the connector 13, the fact that the connector is needed when being installed or the installation height is needed to be adjusted according to fluid in the use process after installation is known, power is needed to be applied to the applied connector to drive the connector to rotate, the embodiment adopts a scheme that the connector can be adjusted by frequently disassembling the shell to expose the connector, and the built-in connector can be driven to rotate by rotating the shell, and the method is as follows:
The housing 6 is divided into an upper housing 606 and a lower housing 607, and the sleeve portion 604, the inner cylinder 605 and the lower housing 607 are integrally provided; the inner wall of the upper shell 606 is provided with tooth grooves 608, correspondingly, the outer surface of the tooth cylinder part 133 of the connecting body 13 is provided with racks 137, the racks 137 are matched with the upper tooth grooves 608, the upper shell can be arranged on the lower shell by sliding downwards in the axial direction, and the matching of the racks 137 and the upper tooth grooves 608 enables the upper shell and the connecting body 13 to have the characteristic of synchronous rotation, namely, the upper shell 606 and the connecting body 13 form synchronous rotation bodies. The lower housing 607 is fixedly mounted on the valve body or can be directly held by an operator to limit the lower housing when the upper housing is adjusted, so that the rotational freedom of the lower housing is eliminated, and at this time, the upper housing 606 is rotated to rotate the linkage connector 13, thereby changing the position height of the connector 13 on the inner cylinder 605 and further changing the height of the temperature sensing body 8.
Based on the characteristic that the upper shell 606 and the lower shell 607 are arranged separately, the lower shell 607 is provided with an indication mark, the upper shell 606 is provided with a scale mark, and the marks are arranged in turn, however, the marks are not essentially different, in the embodiment, isothermal indication scales with the marks of 20 ℃,30 ℃, 40 ℃,50 ℃ and 60 ℃ are printed on the upper shell 606 at intervals, and each scale interval is 10 ℃; the clockwise rotation temperature is adjusted to be small, and the counterclockwise rotation temperature is adjusted to be large. Different marks correspond to different temperatures, scales close to room temperature are generally selected, the ambient temperature fluctuates, and under any fluctuating scale temperature, the temperature change is sensed by the temperature sensing body 5, and then the temperature change is reflected on the stroke change of the temperature sensing body 8, and finally the temperature change is reflected on the opening change of a valve rod.
The inner wall of the shaft barrel portion 141 of the lower overpressure piece 15 is provided with threads, and is in threaded fit with an adjusting nut 19, the top of the temperature sensing body 8 and the protection adapter 17 sleeved on the temperature sensing body are abutted upwards against the adjusting nut 19, and the protection adapter 17 is partially or completely embedded in the adjusting nut 19. The adjustment nut 19 aims to calibrate the dimensional errors of the temperature sensing body 8, the heat conducting adapter 11, the protection adapter 17 and the valve core at any scale temperature.
The shaft barrel portion 141 of the upper pressing member 14 is provided with a sliding groove 144, an integral reinforcing rib 152 is arranged between the shaft barrel portion 141 and the convex ring portion 142 of the lower pressing member 15, the reinforcing rib 152 penetrates through the sliding groove 144, and the reinforcing rib 152 not only has the function of reinforcing the strength of the lower pressing member 15, but also has the characteristic of synchronously rotating the two pressing members 13 in cooperation with the sliding groove 144, namely, the two pressing members form a whole in a rotating way. The upper overpressure piece 14 is clamped with the connecting body, so that the upper casing, the connecting body and the overpressure protection are finally formed into a synchronous body, the lower overpressure piece 15 is indirectly connected to the lower casing, if the adjusting nut 19 needs to be calibrated, the upper casing is disassembled to expose the adjusting nut, at the moment, the adjusting nut is rotated by using a tool such as a wrench, the rotating freedom degree of the lower casing is not generated, the rotating freedom degree of the lower overpressure piece is not generated, and the height of the adjusting nut is adjustable.
The clamping mode of the upper pressing piece 14 and the connecting body is as follows: a plurality of positioning grooves 138 are formed in the top surface 131 of the connector 13, and the positioning grooves 138 have the effects of weight reduction and material saving; the convex ring portion 142 of the upper pressing member 14 is integrally provided with a positioning column 145, and the positioning column 145 is matched with the positioning groove 138, so that the overpressure protection assembly and the connecting body 13 can synchronously rotate.
Whether the adjusting nut 19 is rotated alone to calibrate or rotate the upper housing to adjust the height of the connecting body 13, the adjusting nut 19 has surface friction with the protection adapter 17, and the protection adapter 17 also has the function of isolating the friction force transmitted by the adjusting nut 19 to the temperature sensing body 8 and reducing the friction force born by the temperature sensing body to protect the temperature sensing body.
The material of the shell is preferably ABS; the material of the adjusting nut is preferably PA6-GF30%; the two overvoltage parts of the overvoltage protection component are preferably PA6-GF30%, the overvoltage spring is preferably 304, and the starting overvoltage protection is not lower than 80N; the connecting body is used as a main body of the temperature control head, is made of ABS, has a screw pitch of 2MM and a lead of 6MM; the heat conduction adapter is made of brass, and when the temperature of the valve rod is conducted to the heat conduction adapter, the heated area of the temperature sensing body can be increased; the valve core is an assembly and mainly comprises a valve core body, a valve rod, a spring, a sealing ring, a copper gasket, a water pressing gasket and the like.
When hot water flows out from a radiating fin or floor heating, the valve rod in the valve core is utilized to conduct heat to the temperature sensing body, and the temperature sensing body is utilized to automatically control the opening and closing of the valve or automatically adjust the opening of the valve according to the sensitivity of the temperature sensing body to the temperature: when the paraffin temperature bag senses that the temperature exceeds the set temperature, the temperature bag is expanded, the water pressing gasket is downwards moved by the reaction force, and the opening degree is reduced until the water pressing gasket is closed; otherwise, the temperature is lower than the set temperature, the temperature bulb contracts, the tension of the reset spring in the valve core increases the water pressing gasket, the valve is opened, and the low-temperature water flows to the boiler to be heated continuously; when the temperature exceeds the adjustable range, the valve rod completely closes the valve body channel, the deformation of the temperature sensing body acts on the overpressure protection component reversely, and the overpressure spring is compressed to provide the displacement output required by the temperature sensing body, so as to protect the temperature sensing body.
The invention positions the overvoltage protection component at a certain height in the shell through the connector, the connector is a deformable injection molding piece and is used for internally arranging the overvoltage protection component, and the strength of the connector connected to the screw cylinder part is enhanced through the clamp spring and/or the rebound cap; the invention divides the shell into an independent upper shell and a lower shell, takes the upper shell as a power source, the connecting piece is also connected with the upper shell and the upper overpressure piece in a non-rotating way, the upper shell, the connecting body and the two overpressure pieces for overpressure protection form a synchronous rotating body, and different temperature control points can be selected by adjusting the connecting body and the adjusting screw cap.
The invention transmits the temperature of the heating and ventilation fluid medium to the temperature sensing body through the heat conduction adapter, forms a cavity capable of slowing down heat exchange with the outside through the rebound blocking cap and the guide cylinder part of the pressing cap, and relatively isolates the temperature bulb part of the temperature sensing body from the outside, thereby ensuring that the temperature sensing body is not interfered by the temperature of the outside environment.
In effect, the invention can fully utilize heat energy, and compared with a radiator or floor heating without a backwater temperature control valve, the control valve provided by the invention saves 20% -30% of heat under the same condition; through the setting of the connector, the overall structure layout is compact and the installation difficulty is reduced.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The loop water temperature control valve comprises a regulating valve (1) and a temperature control head (2) connected to the regulating valve, wherein the regulating valve (1) comprises a valve body and a valve core; the method is characterized in that:
The temperature control head (2) comprises a shell (6) connected to a valve body of the regulating valve, a through hole (603) is formed in the bottom of the shell (6) and internally provided with a temperature sensing body (8), a rebound blocking cap (9) is sleeved outside the temperature sensing body (8), a return spring (10) sleeved outside the temperature sensing body (8) is arranged between the rebound blocking cap (9) and the bottom of the shell (6), an expansion part (801) protruding radially is arranged on the temperature sensing body (8), and the rebound blocking cap (9) is pressed on the expansion part (801) by the return spring (10);
the upper end of the temperature sensing body (8) is connected to a fixed part, the bottom of the temperature sensing body is used as a movable surface, the movable surface is connected to the valve rod through a heat conduction adapter (11), a guide cylinder part (301) extending into the shell (6) from a through hole (603) is arranged on the pressure cap (3) of the valve core, and part of the temperature sensing body (8) and the whole heat conduction adapter (11) are in coaxial clearance fit with the guide cylinder part;
An inner cylinder part (901) is arranged on the rebound blocking cap (9), the inner wall of the lower end of the inner cylinder part (901) is in coaxial clearance fit with the guide cylinder part (301) of the pressing cap (3), and a cavity (12) capable of slowing down heat exchange with the outside is formed between the rebound blocking cap (9) and the pressing cap (3).
2. The circuit water temperature control valve of claim 1 wherein: the fixed component is an overvoltage protection component which is indirectly connected to the inner wall of the shell through a connecting body (13); the overvoltage protection assembly comprises an upper overvoltage piece (14), a lower overvoltage piece (15) and an overvoltage spring (16), wherein two ends of the overvoltage spring (16) respectively abut against the upper overvoltage piece (14) and the lower overvoltage piece (15).
3. The circuit water temperature control valve of claim 2 wherein: the top of the temperature sensing body (8) is sleeved with a protection adapter (17), and the protection adapter enables the temperature sensing body to indirectly abut against the lower pressing piece (15).
4. A circuit water temperature control valve according to claim 3, wherein: the upper overpressure piece (14) and the lower overpressure piece (15) comprise an integrally connected shaft cylinder part (141) and a convex ring part (142) which is positioned at the end part of the shaft cylinder and radially protrudes, and two ends of the overpressure spring (15) are contacted with the convex ring part; the shaft cylinder part of the lower pressing piece is positioned in the shaft cylinder part of the upper pressing piece, and the adapter (17) is arranged in the shaft cylinder part of the lower pressing piece; the shaft barrel part of the upper pressing piece is radially inwards provided with an upper clamping protrusion (143), the lower pressing piece is radially outwards provided with a lower clamping protrusion (151), the lower clamping protrusion is positioned above the upper clamping protrusion, and the two clamping protrusions are abutted together under the action of the pressing spring (15).
5. The circuit water temperature control valve of claim 4 wherein: the top surface (131) and a step surface (132) of the connecting body (13) form a tooth cylinder part (133), the overvoltage protection component is arranged in the tooth cylinder part (133), the overvoltage protection component further comprises a screw cylinder part (134) integrally connected with the tooth cylinder part (133), a plurality of partitions (135) are arranged on the screw cylinder part (134), and the partitions (135) divide the screw cylinder part (134) into a plurality of elastic parts with threads on the outer surfaces;
The bottom of the shell (6) is provided with a raised inner connecting cylinder (605), the inner wall of the inner connecting cylinder (605) is provided with threads, and the screw cylinder part (134) is in threaded fit with the inner connecting cylinder (605); the inner wall of the screw cylinder part (134) is provided with an annular clamp spring groove (136), a clamp spring (18) is arranged in the clamp spring groove (136), and/or the outer edge surface of the rebound blocking cap (9) is contacted with the inner wall of the screw cylinder part (134).
6. The circuit water temperature control valve of claim 5 wherein: the shell (6) is divided into an upper shell (606) and a lower shell (607) which are separated, a tooth groove (608) is formed in the inner wall of the upper shell (606), a rack (137) is arranged on the outer surface of the tooth cylinder part (133), the rack (137) is matched with the upper tooth groove (608), and the upper shell (606) and the connecting body (13) form a synchronous rotating body.
7. The circuit water temperature control valve of claim 6 wherein: an adjusting nut (19) is in threaded fit with the inner wall of the shaft barrel portion (141) of the lower pressing piece (15), the protection adapter (17) is abutted upwards against the adjusting nut (19), and the protection adapter (17) is partially or completely arranged in the adjusting nut (19).
8. The circuit water temperature control valve of claim 7 wherein: a chute (144) is arranged on the shaft barrel part of the upper pressing piece (14), and a reinforcing rib (152) is arranged between the shaft barrel part and the convex ring part of the lower pressing piece, and penetrates through the chute (144); the top surface (131) of the connecting body is provided with a plurality of positioning grooves (138), the convex ring part (142) of the upper pressing piece is provided with positioning columns (145), and the positioning columns (145) are matched with the positioning grooves (138).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210796246.9A CN114992333B (en) | 2022-07-06 | 2022-07-06 | Loop water temperature control valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210796246.9A CN114992333B (en) | 2022-07-06 | 2022-07-06 | Loop water temperature control valve |
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| Publication Number | Publication Date |
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| CN114992333A CN114992333A (en) | 2022-09-02 |
| CN114992333B true CN114992333B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210796246.9A Active CN114992333B (en) | 2022-07-06 | 2022-07-06 | Loop water temperature control valve |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511666A (en) * | 2012-06-21 | 2014-01-15 | 罗华奋 | Thermostatic valve element |
| CN114484012A (en) * | 2020-11-12 | 2022-05-13 | 芜湖美的厨卫电器制造有限公司 | Water return valve and water supply system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8329218U1 (en) * | 1982-10-19 | 1984-04-26 | Cazzaniga S.p.A., Milano | Flow control valve for radiators, radiators or the like |
| JP5800424B2 (en) * | 2011-12-02 | 2015-10-28 | 株式会社ダンレイ | Hot water mixing valve |
| CN105221826B (en) * | 2015-10-10 | 2017-12-26 | 广州迪森家用锅炉制造有限公司 | Temperature-sensitive Flow-rate adjustment valve element and temperature-sensitive flow control valve |
-
2022
- 2022-07-06 CN CN202210796246.9A patent/CN114992333B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511666A (en) * | 2012-06-21 | 2014-01-15 | 罗华奋 | Thermostatic valve element |
| CN114484012A (en) * | 2020-11-12 | 2022-05-13 | 芜湖美的厨卫电器制造有限公司 | Water return valve and water supply system |
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| CN114992333A (en) | 2022-09-02 |
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Application publication date: 20220902 Assignee: SHANGRAO OUDE ENVIRONMENTAL PROTECTION Co.,Ltd. Assignor: JIANGXI AVONFLOW HEATING VENTILATION TECHNOLOGY Co.,Ltd. Contract record no.: X2025980027003 Denomination of invention: A circuit water temperature control valve Granted publication date: 20240830 License type: Common License Record date: 20251013 |
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