CN109302356B

CN109302356B - One-way air duct intelligent heat dissipation type core switch

Info

Publication number: CN109302356B
Application number: CN201811509748.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: Jingde Zhanjia Intelligent Technology Co Ltd
Current assignee: Jingde Zhanjia Intelligent Technology Co., Ltd
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2020-11-06
Anticipated expiration: 2038-12-11
Also published as: CN109302356A

Abstract

The invention relates to the technical field of communication equipment and discloses an intelligent heat dissipation type core switch with a one-way air channel, which comprises a back plate, a service line card, an exchange screen plate and a shell, wherein one side of the back plate is connected with the service line card through an orthogonal framework, the other side of the back plate is connected with one side of the exchange screen plate through the orthogonal framework, the back plate, the service line card and the exchange screen plate are all arranged in the shell, one side of the shell is provided with a vent, the top of the other side of the shell is fixedly provided with a heat dissipation fan, and the bottom end of the back plate is fixedly connected with a lower. According to the invention, the lower air guide pipe and the upper air guide pipe are arranged, the original air inlet at the air outlet side is cancelled, and instead, the cold inlet air at the lower air guide pipe is guided by the guide plate to radiate heat to the exchange screen plate, so that the flow direction of the air channel radiating left and right in the shell is one-way, the heat radiating structure of a data center machine room is met, and the heat radiating performance of the cabinet body in long-term stable operation is effectively ensured.

Description

One-way air duct intelligent heat dissipation type core switch

Technical Field

The invention relates to the technical field of communication equipment, in particular to an intelligent heat dissipation type core switch with a one-way air duct.

Background

The Ethernet switch is mainly divided into a box type switch and a frame type switch, the main components of the Ethernet switch are the same, and only the shape and the performance of the Ethernet switch are different, the frame type switch is mainly used for a core switch of a data center and has multi-interface performance of giga or ten thousand mega.

In order to meet the gigabit or ten gigabit data transmission efficiency, at present, the connection between the service line card and the backplane (also called as the switching matrix) and the connection between the switching network board and the backplane are connected by adopting an orthogonal architecture as shown in fig. 1, which aims to greatly shorten the transmission distance of high-speed signals between the service line card and the backplane and provide a hardware architecture basis for the stable transmission of the high-speed signals of the switch.

However, the construction requirement of the data center machine room is that the equipment cabinets are arranged in a face-to-face and back-to-back isolation mode to form an isolated cold air channel and an isolated hot air channel, on the basis, the traditional core switch takes left and right transverse air channels as the whole machine heat dissipation channels, hot air and cold air flow back in the equipment cabinets, the temperature of an air inlet is at least increased by 15 ℃ when hot air flows back to a cold air port, the heat dissipation performance of a single board is affected when the hot air flows back to the cold air port, and the high-power and high-density 10GE/40GE single board cannot be supported. The problem of hot air backflow still exists behind the cabinet body in the improved heat dissipation channel with front and rear air inlets and rear air outlets, as shown in fig. 2, L in fig. 2 represents cold air, H represents hot air, and a dotted arrow represents the flow direction of the air channel. A further improved straight ventilation duct replaces the back plate with an orthogonal high speed connector, which currently cannot meet the transmission requirements of 40GE/100 GE.

Therefore, the single-air-channel intelligent heat dissipation mechanism is provided to meet the heat dissipation performance requirement required by the high-speed transmission efficiency of the core switch.

Disclosure of Invention

Aiming at the defects of the design of the heat dissipation channel of the existing core switch in the background art, the invention provides the one-way air channel intelligent heat dissipation type core switch which has the advantages of cold and hot air channel isolation and stable comprehensive heat dissipation performance, and solves the problem that the heat dissipation performance cannot meet the heat dissipation requirement of high-speed transmission equipment due to the fact that the heat dissipation air channel reflows due to the fact that the design of the heat dissipation air channel is unreasonable.

The invention provides the following technical scheme: an intelligent heat dissipation type core switch with a one-way air duct comprises a back plate, a service line card, an exchange screen plate and a shell, wherein one side of the back plate is connected with the service line card through an orthogonal framework, the other side of the back plate is connected with one side of the exchange screen plate through an orthogonal framework, the back plate, the service line card and the exchange screen plate are all arranged in the shell, one side of the shell is provided with a vent, the top of the other side of the shell is fixedly provided with a heat dissipation fan, the bottom end of the back plate is fixedly connected with a lower air guide pipe, the bottom end of the lower air guide pipe is fixedly connected with the inner bottom of the shell, a guide plate is arranged on one side of the lower air guide pipe and positioned between the back plate and the heat dissipation fan, the top end of the guide plate is provided with a groove which is just clamped with the bottom end of, the back of the air cylinder is fixedly connected with the front of the exchange screen plate, the air cylinder is hollow, a spherical bag is hermetically bonded at the top end of the air cylinder, a permanent magnet block is bonded at the top end of the spherical bag, an electromagnet is arranged right above the permanent magnet block, the back of the electromagnet is fixedly connected with the front of the exchange screen plate, conducting strips are fixedly mounted at the bottom end of the electromagnet and the top end of the permanent magnet block, an upper air guide pipe is fixedly connected with the top end of the back plate, the top end of the upper air guide pipe is fixedly connected with the top end of the inner cavity of the shell, and a section adjusting film capable of sinking towards the inner side and the outer side of the upper air guide pipe is fixedly mounted on one side of.

Preferably, the section of the vertical section of the upper air guide pipe at the section adjusting film is square, the section adjusting film is fully distributed on one side of the square section, and the sectional area of the lower air guide pipe is the same as that of the upper air guide pipe.

Preferably, a circuit where the cooling fan is located is connected in series with a voltage dividing resistor and a power supply, a circuit where the electromagnet is located is connected in series with a fixed contact of a time relay, the electromagnet and a movable contact of the time relay are connected in parallel at two ends of the voltage dividing resistor, and two control contacts of the time relay are respectively and electrically connected with two conducting strips.

Preferably, the bending section of the guide plate is arc-shaped, and the vertical section of the guide plate is positioned at the edge of one side of the exchange screen plate.

Preferably, the top of the vent is lower than the bottom of the section adjusting film.

Preferably, the contact point of the conducting strip at the permanent magnet and the conducting strip at the electromagnet is just the height of the spherical bag when the spherical bag is completely stretched, and the volume of the gas in the gas storage cylinder is set as the total volume of the spherical bag completely stretched under the condition of 40 ℃.

The invention has the following beneficial effects:

1. according to the invention, the lower air guide pipe and the upper air guide pipe are arranged, the original air inlet at the air outlet side is cancelled, and instead, the cold inlet air at the lower air guide pipe is guided by the guide plate to radiate heat to the exchange screen plate, so that the flow direction of the air channel radiating left and right in the shell is one-way, the heat radiating structure of a data center machine room is met, and the heat radiating performance of the cabinet body in long-term stable operation is effectively ensured.

2. The invention detects the exchange screen board stably in real time by the expansion and contraction performance of the gas in the gas storage cylinder by arranging the temperature detection and pressure regulation device, and further when the temperature of the exchange screen board is higher, the rotating speed of the heat dissipation fan is higher, the gas discharge capacity is increased, and the cross section regulation film is matched, according to the Bernoulli hydrodynamics principle, after the rotating speed of the heat dissipation fan is increased, the gas flow speed in the upper air guide pipe is higher than the gas flow speed at the outer side of the cross section regulation film, so that the cross section regulation film is sucked to be concave towards the upper air guide pipe, the cross section area of the upper air guide pipe is reduced, therefore, the gas flow speed in the upper air guide pipe is high, but the total gas flow in unit time is basically kept unchanged, the discharge capacity of the heat dissipation fan is increased, the gas flow from the lower air guide pipe at the exchange screen board is improved, the heat dissipation efficiency, the heat dissipation performance of the exchange screen plate on one side of the backboard is guaranteed, and the comprehensive heat dissipation performance of the equipment reaches the standard.

Drawings

FIG. 1 is a schematic perspective view of a conventional service line card, a switching network board and a backplane;

FIG. 2 is a schematic diagram of a conventional heat dissipation duct for a core switch;

FIG. 3 is a side view of the interior of the housing of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;

FIG. 5 is a schematic structural view of the temperature detecting and pressure regulating device of the present invention;

FIG. 6 is a connection diagram of the voltage regulator circuit of the present invention.

In the figure: 1. a back plate; 2. a service line card; 3. exchange the otter board; 4. a housing; 5. a vent; 6. a heat radiation fan; 7. a lower air guide pipe; 8. a baffle; 9. a temperature detecting and pressure regulating device; 91. an air cylinder; 92. a spherical balloon; 93. permanent magnet blocks; 94. an electromagnet; 95. a conductive sheet; 10. an upper air guide pipe; 11. adjusting a cross section film; 12. a voltage dividing resistor; 13. a power source; 14. a time relay.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a one-way air channel intelligent heat dissipation type core switch comprises a back plate 1, a service line card 2, an exchange screen plate 3 and a shell 4, wherein one side of the back plate 1 is connected with the service line card 2 through an orthogonal framework, the other side of the back plate 1 is connected with one side of the exchange screen plate 3 through an orthogonal framework, the back plate 1, the service line card 2 and the exchange screen plate 3 are all arranged inside the shell 4, one side of the shell 4 is provided with a vent 5, the top of the other side of the shell 4 is fixedly provided with a heat dissipation fan 6, the bottom end of the back plate 1 is fixedly connected with a lower air guide pipe 7, the bottom end of the lower air guide pipe 7 is fixedly connected with the inner bottom of the shell 4, one side of the lower air guide pipe 7 is provided with a guide plate 8 positioned between the back plate 1 and the heat dissipation fan 6, the top end of the guide plate, the temperature detection and pressure regulation device 9 comprises an air cylinder 91, the back of the air cylinder 91 is fixedly connected with the front of the exchange screen plate 3, the air cylinder 91 is hollow, the air cylinder 91 is made of light material with good heat conduction and good conductor, a spherical bag 92 is hermetically bonded at the top of the air cylinder 91, a permanent magnet 93 is bonded at the top of the spherical bag 92, an electromagnet 94 is arranged right above the permanent magnet 93, the magnetic pole of the permanent magnet 93 is opposite to the magnetic pole generated by electrifying the electromagnet 94, the generated mutual repulsion force is larger than the upward thrust generated by the expansion of the spherical bag 92 by the gas in the air cylinder 91, the back of the electromagnet 94 is fixedly connected with the front of the exchange screen plate 3, the bottom of the electromagnet 94 and the top of the permanent magnet 93 are fixedly provided with a conducting strip 95, the top of the back plate 1 is fixedly connected with an upper air guide pipe 10, the top of the upper air guide pipe 10 is fixedly connected with the top of the inner cavity of the shell 4, one side of the upper air guide, the section adjusting film 11 is made of a flexible film material, such as neoprene, polyvinyl chloride, and the like.

The cross section of a vertical section of the upper air guide pipe 10 at the position of the cross section adjusting film 11 is square, the cross section adjusting film 11 is distributed on one side of the square cross section, the cross section of the lower air guide pipe 7 is the same as that of the upper air guide pipe 10, the upper air guide pipe 10 is arranged in the square cross section, and the cross section adjusting film 11 is distributed on one side of the upper air guide pipe 10, so that when the flow speed in the upper air guide pipe 10 is accelerated, the cross section adjusting film 11 can be sucked inwards, the cross section of the upper air guide pipe 10 is integrally reduced by the cross section adjusting film 11, the fluid flow is kept to be generally unchanged due to the change of fluid pressure, and the theory can be determined by a gas flow equation Q & ltVS, wherein Q is the gas flow in unit time, V is the gas flow speed, and S is the cross section of the pipeline.

The circuit where the cooling fan 6 is located is connected in series with the voltage dividing resistor 12 and the power supply 13, the circuit where the electromagnet 94 is located is connected in series with the stationary contact of the time relay 14, the electromagnet 94 and the movable contact of the time relay 14 are connected in parallel at two ends of the voltage dividing resistor 12, two control contacts of the time relay 14 are electrically connected with two conducting strips 95 respectively, the electromagnet 94 is composed of a winding and an iron core, two ends of the winding of the electromagnet 94 are directly connected in series with the circuit, the voltage dividing resistor 12 is locally short-circuited by the circuit where the electromagnet 94 is located, therefore, the voltage division at two ends of the cooling fan 6 is improved, and the rotating speed is.

Wherein, the bending section of guide plate 8 is the circular arc type, and the vertical section of guide plate 8 is located the edge of exchange otter board 3 one side, guarantees that the cold wind that comes from down guide duct 7 can be by the guide plate 8 water conservancy diversion to exchange otter board 3 on the front, and the windage is little.

Wherein, the top place height of vent 5 is less than the bottom place height of transferring cross-section film 11, prevents to transfer one side of cross-section film 11 by the direct effect of the cold wind that vent 5 directly advances, guarantees to transfer the gaseous velocity of flow of cross-section film 11 one side to be less than the velocity of flow of gas in the guide duct 10 far away to guarantee to transfer cross-section film 11 can normally the indent.

The contact point of the conductive sheet 95 at the permanent magnet 93 and the conductive sheet 95 at the electromagnet 94 is just the height of the spherical bag 92 when the spherical bag 92 is completely stretched, the volume of the gas in the gas storage cylinder 91 is set to be the total volume of the spherical bag 92 when the spherical bag 92 is completely stretched at 40 ℃, the gas in the gas storage cylinder 91 is heated to expand, when the temperature reaches 40 ℃, the dead weight of the permanent magnet 93 and the conductive sheet 95 can be just overcome, the spherical bag 92 is completely stretched, and meanwhile, the two conductive sheets 95 are just contacted.

The working principle of the invention is as follows:

during normal operation, the heat dissipation fan 6 rotates, cold air enters the shell 4 from the vent 5, enters the other side of the back plate 1 from the lower air guide pipe 7 and the upper air guide pipe 10 respectively, and is discharged out of the shell 4 from the heat dissipation fan 6, the cold air completes heat exchange with the service line card 2, the back plate 1 and the exchange screen plate 3 respectively, but because the cold air passing through the exchange screen plate 3 has smaller amount, the temperature rises to a preset temperature along with the increase of the heat at the exchange screen plate 3, namely, the gas in the air storage cylinder 91 expands due to heating so that the spherical bag 92 lifts the permanent magnet 93, the two conducting strips 95 are contacted, the time relay 14 is triggered to conduct and delay the power off, and the electromagnet 94 is conducted by the time relay 14, on one hand, the conducted electromagnet 94 causes the partial short circuit of the divider resistor 12, the voltage in the heat dissipation fan 6 becomes high, the current becomes high, the rotating speed becomes fast, according to the Bernoulli fluid mechanics principle, the section adjusting film 11 is concaved inwards towards the inner side of the upper air guide pipe 10, the sectional area of the upper air guide pipe 10 is reduced, the total change of the flow in the upper air guide pipe 10 is small, most of the increased discharge capacity of the heat dissipation fan 6 is provided by the gas at the lower air guide pipe 7, the cold air flow passing through the exchange screen plate 3 is increased, the cooling of the exchange screen plate 3 is accelerated, on the other hand, the conducted electromagnet 94 generates an electromagnetic field, and generates mutual repulsion with the permanent magnet 93 to push the permanent magnet 93, and the two conducting strips 95 are separated. After the time delay action of the time relay 14 is finished, the electromagnet 94 is powered on and switched off, the electromagnetic field generated by the electromagnet 94 disappears, the divider resistor 12 is connected into the circuit where the heat dissipation fan 6 is located again, if the temperature at the exchange screen 3 reaches below the preset temperature, the heat dissipation fan 6 returns to normal operation, and if the temperature at the exchange screen 3 is still above the preset temperature, the action is continued until the temperature at the exchange screen 3 reaches below the preset temperature.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an one-way wind channel intelligence heat dissipation type core switch, includes backplate (1), business ply-yarn drill (2), exchange otter board (3) and casing (4), one side and business ply-yarn drill (2) of backplate (1) are connected through the quadrature framework, the opposite side of backplate (1) is connected through one side of quadrature framework and exchange otter board (3), the inside of casing (4), its characterized in that are all located in backplate (1), business ply-yarn drill (2) and exchange otter board (3): a vent (5) is formed in one side of the shell (4), a heat-radiating fan (6) is fixedly mounted at the top of the other side of the shell (4), a lower air guide pipe (7) is fixedly connected to the bottom end of the back plate (1), the bottom end of the lower air guide pipe (7) is fixedly connected to the inner bottom of the shell (4), a guide plate (8) is arranged on one side of the lower air guide pipe (7) and positioned between the back plate (1) and the heat-radiating fan (6), a groove which is just clamped with the bottom end of the exchange screen plate (3) is formed in the top end of the guide plate (8), a temperature detection and pressure regulation device (9) is fixedly mounted on the front surface of the exchange screen plate (3), the temperature detection and pressure regulation device (9) comprises an air storage cylinder (91), the back surface of the air storage cylinder (91) is fixedly connected with the front surface of the exchange screen plate (, the top end of the air storage cylinder (91) is hermetically bonded with a spherical bag (92), the top end of the spherical bag (92) is bonded with a permanent magnet (93), an electromagnet (94) is arranged right above the permanent magnet (93), the back surface of the electromagnet (94) is fixedly connected with the front surface of the exchange screen plate (3), the bottom end of the electromagnet (94) and the top end of the permanent magnet (93) are fixedly provided with a conducting strip (95), the top end of the back plate (1) is fixedly connected with an upper air guide pipe (10), the top end of the upper air guide pipe (10) is fixedly connected with the top end of the inner cavity of the shell (4), and one side of the upper air guide pipe (10) perpendicular to the bent pipe is fixedly provided with a section adjusting film (11) capable of sinking towards the inner side and the outer side of the upper;

the circuit where the cooling fan (6) is located is connected with a voltage dividing resistor (12) and a power supply (13) in series, the circuit where the electromagnet (94) is located is connected with a fixed contact of a time relay (14) in series, the electromagnet (94) and a movable contact of the time relay (14) are connected to two ends of the voltage dividing resistor (12) in parallel, and two control contacts of the time relay (14) are respectively and electrically connected with two conducting strips (95).

2. The one-way air duct intelligent heat dissipation type core switch of claim 1, characterized in that: the section of a vertical section of the upper air guide pipe (10) at the position of the section adjusting film (11) is square, the section adjusting film (11) is fully distributed on one side of the square section, and the sectional area of the lower air guide pipe (7) is the same as that of the upper air guide pipe (10).

3. The one-way air duct intelligent heat dissipation type core switch of claim 1, characterized in that: the bending section of the guide plate (8) is arc-shaped, and the vertical section of the guide plate (8) is positioned at the edge of one side of the exchange screen plate (3).

4. The one-way air duct intelligent heat dissipation type core switch of claim 1, characterized in that: the top of the ventilation opening (5) is lower than the bottom of the section adjusting film (11).

5. The one-way air duct intelligent heat dissipation type core switch of claim 1, characterized in that: the contact point of the conducting strip (95) at the permanent magnet block (93) and the conducting strip (95) at the electromagnet (94) is just the height of the spherical bag (92) when the spherical bag is completely stretched, and the volume of the gas in the gas storage cylinder (91) is set as the total volume of the spherical bag (92) which is completely stretched under the condition of 40 ℃.