WO2019127546A1 - Sterilization tip with light source monitoring function, and sterilization device - Google Patents

Abstract

Provided is a sterilization tip (20) with a light source monitoring function. The sterilization tip (20) comprises a housing (21), and an ultraviolet light source assembly (22) arranged inside the housing (21), with the ultraviolet light source assembly (22) comprising an ultraviolet light source (211), and the sterilization tip (20) further comprising a light source monitoring assembly (30). The light source monitoring assembly (30) comprises an optical fiber (31) provided with a probe end and an output end, a fluorescent plate (32), and a visible light source (33), wherein the probe end of the optical fiber (31) is used for collecting ultraviolet light of the ultraviolet light source (221), and the output end is arranged opposite the fluorescent plate (32). The light source monitoring assembly (30) further comprises the visible light source (33) used for being combined with the fluorescence of the fluorescent plate (32) into mixed light. Further provided is a sterilization device having the sterilization tip (20) with the light source monitoring function. By means of the sterilization tip (20) with the light source monitoring function, the working condition of the ultraviolet light source (211) can be indicated with a low cost, and the optical power output by a light source LED can also be qualitatively indicated.

Description

Sterilization head and sterilization device with light source monitoring function Technical field

The invention relates to the technical field of water sterilization devices, in particular to a sterilization head and a sterilization device with a light source monitoring function.

Background technique

Ultraviolet light sources (usually UV-LEDs are commonly used) are commonly used in a variety of sterilization products, such as hospital operating rooms, wards, and mobile water sterilizers, which are often required to be sterilized with UV light. This type of sterilization device is a commonly used water purification and sterilization device. Among them, water purification refers to a purification process for removing pollutants from raw water, and its purpose is to achieve the effect of purifying water by a specific procedure, and use water for different purposes. Most of the existing water purifiers use physical isolation adsorption or mercury lamp sterilization. Physical isolation does not kill bacteria, only reduces the number of bacteria, and requires periodic replacement of the filter. Mercury lamps not only have a short life span, but also mercury sterilizers are easy to pollute the environment, and recycling is inconvenient, which may cause heavy metal poisoning.

Based on the above situation, many manufacturers have developed a device for sterilizing water by using ultraviolet rays, and the structure thereof is as shown in Fig. 1. The flow water sterilizing device shown in Fig. 1 includes a water flowing chamber 1 having a water inlet a and a water outlet b, and is disposed at the same A sterilization head 2 at one end of the flow chamber 1 and a UV-LED source 3 for emitting ultraviolet light are mounted in the sterilization head 2. The flowing water sterilizing device having the above structure sterilizes the water in the flowing water chamber 1 by ultraviolet rays of the UV-LED light source 3 that emits ultraviolet light. However, due to its sealing and safety problems, the sterilization head housing is sealed with a sealing material to prevent ultraviolet rays from harming people around.

Therefore, in the use of these sterilization equipment and products, the intensity of the irradiation of the ultraviolet irradiation lamp is not able to visually or feel the value, which makes it difficult for the staff to know the working condition of the UV-LED, so that the UV-LED The working state and luminous power cannot be mastered, which affects the ability of this type of equipment to control the sterilization process in use.

Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a sterilization head having a light source monitoring function, which is intended to monitor the operation of the light source in the sterilization apparatus in real time and to better control the sterilization.

In order to achieve the above object, the present invention provides a sterilization head having a light source monitoring function, the sterilization head comprising a housing, and an ultraviolet light source assembly disposed in the housing; the ultraviolet light source assembly includes an ultraviolet light source, wherein The sterilization head further includes a light source monitoring component; the light source monitoring component includes an optical fiber, a fluorescent plate, and a visible light source having a probe end and an output end; wherein

The probe end of the optical fiber is configured to collect ultraviolet light of the ultraviolet light source, and the output end is disposed opposite to the fluorescent plate; the light source monitoring component further includes a visible light source for mixing and combining light with the fluorescent plate.

Preferably, the light source monitoring component further includes an ultraviolet lens disposed between the ultraviolet light source and the probe end of the optical fiber, and the probe end of the optical fiber is located on the optical axis of the ultraviolet lens and abuts the ultraviolet lens ;

And/or, the ultraviolet light source assembly further includes a reflector disposed outside the ultraviolet light source.

Preferably, the light source monitoring assembly further includes a monitoring box for mounting an output end of the optical fiber, a fluorescent plate, and a visible light source.

Preferably, the monitoring box has a detecting inner chamber, the fluorescent plate and the visible light source are disposed in the detecting inner chamber, and the detecting inner chamber further has a receiving hole for inserting the output end of the optical fiber;

The detection inner chamber is further provided with a light transmission window.

Preferably, the detecting inner chamber includes a detecting cavity having an opening, and a sliding door disposed on the detecting cavity opening and sliding in an opening sectional direction;

The fluorescent plate and the visible light source are both disposed in the detecting cavity, and the insertion hole is disposed on the sliding door.

Preferably, the light source monitoring component further includes a constant current constant voltage power supply for supplying the visible light source.

Preferably, the light source monitoring component further comprises a first photosensor for detecting the illumination of the visible light source, the first photosensor being connected to the constant current constant voltage power source.

Preferably, the light source monitoring component further comprises an optical signal processing unit, the optical signal processing unit comprises a second photoelectric sensor, a power supply and a data processing module, and the second photoelectric sensor, the power supply and the data processing module are electrically connected by wires Connecting to form a current loop; wherein

The second photosensor is configured to receive light transmitted by the light transmission window and convert the light into a digital electrical signal; the data processing module is configured to receive the digital electrical signal of the second photoelectric sensor, and calculate and generate the ultraviolet light source Luminous intensity data.

Preferably, the light transmission window is further provided with a polarizing plate;

The second photosensor is a polarized light sensor.

In addition to the above-described sterilization head having a light source monitoring function, the present invention further proposes a sterilization apparatus comprising the above sterilization head and a suitable sterilization product assembly.

The sterilization head having the light source monitoring function of the present invention can indicate the operation of the deep ultraviolet light source in the sterilization device at low cost, and can also qualitatively indicate the optical power of the output of the light source LED. And through the optical fiber guiding light, simultaneous monitoring of multiple light sources is realized, and the applicability of the product is improved.

DRAWINGS

1 is a schematic structural view of a conventional flowing water sterilization device;

2 is a schematic structural view of a flowing water sterilization device with a light source monitoring function according to the present invention;

3 is a color spectrum of light mixing of a fluorescent plate of different light intensities with a visible light source according to the present invention;

4 is a schematic structural view of an optical signal processing unit in a light source monitoring assembly of the present invention.

Detailed ways

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

First of all, in the present description, the sterilization head for the flowing water sterilization device will be described as an example, but it is not limited to the product of the flowing water sterilization device, and can be applied to other sterilization device products requiring the sterilization head. The present invention provides a sterilization head having a light source monitoring function. The following is a description of the corresponding use of the flowing water sterilization device as the water sterilization head 20. The structure thereof is shown in FIG. 2, and the flowing water sterilization device includes a flow water chamber 10, And a water sterilization head 20 that cooperates with the flow chamber 10; the water sterilization head 20 is disposed at one end of the flow chamber 20 for ultraviolet irradiation of the flowing water chamber 20. Moreover, in the implementation, in order to ensure safety, the sterilization head 20 is fixedly and sealingly connected to the flow water chamber 10 during installation and cannot leak water.

Wherein, in the implementation, the flow water chamber 10 has a water inlet 11 and a water outlet 12, and the inside of the cavity is divided into two parts by a partition plate 13, and the inside is respectively provided with a water flow pipe (which may include an inner pipe and an outer pipe, The inner tube is used to connect the water inlet and the outer tube is connected to the water outlet, which belongs to the existing content, so the figure is not digitally marked), and is used to form a reasonable water circulation channel and increase the time for the ultraviolet light to illuminate the water flow.

Further, the water sterilization head 20 of the present invention comprises a casing 21 and at least one set of ultraviolet light source assemblies 22 disposed in the casing 21 (the number of the ultraviolet light source assemblies 22 shown in FIG. 2 is four, but according to the capacity and requirements of the equipment, The skilled person can adjust and change the quantity, and is not limited to the number shown in the drawings; wherein each set of ultraviolet light source assembly 22 is provided by an ultraviolet light source 221 (usually a UV-LED) and is disposed outside the ultraviolet light source 221 The reflector cup 222 is used for concentrating the light emitted by the ultraviolet light source located inside thereof, and reducing astigmatism and glare, effectively reducing the light loss of the ultraviolet light emitted by the light source, and improving the utilization of the ultraviolet light.

For the purpose of light source monitoring, the flowing water sterilization device of the present invention is further provided with a light source monitoring component 30 comprising an optical fiber 31 having a probe end and an output end, a fluorescent plate 32 and a visible light source 33; wherein the probe end of the optical fiber 31 The ultraviolet light emitted from the ultraviolet light source 221 in the reflector 222 is disposed in the reflector 222, and the output end of the optical fiber 31 is disposed opposite to the fluorescent plate 32. The ultraviolet light source 221 in the water sterilization head is collected by using the optical fiber setting method. The emitted ultraviolet light is then projected from the output end of the optical fiber 31 onto the fluorescent plate 32 after being transmitted through the optical fiber. After receiving the ultraviolet light, the fluorescent plate 32 is excited to generate visible fluorescence, and the fluorescent plate 32 is excited to emit light. The intensity is related to the intensity of the original excitation light; the invention further emits visible light by the supplemental visible light source 33 itself, and is mixed with the fluorescent plate 32 to produce visible fluorescence, which becomes mixed light, by detecting the color and brightness information of the mixed light. The working state and luminous power of the original ultraviolet light source 221 can be analyzed.

The hybrid light detection method of the present invention is based on the mixing of several different colors of light, and the mixed light exhibits different colors as the respective ratios change, as shown in FIG. In the present invention, the different colors of the final mixed light correspond to different ultraviolet light sources 221 to emit power values, so that it is possible to intuitively determine whether the ultraviolet light source 221 is in an effective working range by the detection result of the mixed light. For example, when the optical power of the ultraviolet light source 221 is less than the first 30%, the color of the mixed light is reddish. When the optical power of the ultraviolet light source 221 is less than 5%, since the fluorescence is very weak, when the light of the visible LED is displayed, the user is prompted. Need to replace the UV light source 221 lamp beads.

Further, in order to increase the amount of light collected by the optical fiber 31 to the original ultraviolet light source 221, in the implementation of the present invention, an ultraviolet lens 311 is added before the light entrance of the probe end of the optical fiber 31, and the light emitted by the ultraviolet light source 221 is concentrated by the optical fiber 31. The probe is collected to increase the amount of light collected. At the same time, according to the purpose of the present invention, the ultraviolet lens 311 is arranged in such a manner that the probe of the optical fiber 31 is placed on the optical axis of the ultraviolet lens 311 and is in close contact with the lens, so that the light collection amount is improved when the setting is performed. Good, and more conducive to light entering the probe of the optical fiber 31.

Further, in order to improve the usability of the apparatus in the present invention, the light source monitoring assembly 30 further includes a monitoring box 34 for mounting and fixing the output end of the optical fiber 31, the fluorescent plate 32, and the visible light source 33. In the structure of the monitoring box 34, a plurality of detecting inner chambers 341 may be disposed, and each of the detecting inner chambers 341 has a socket for the output end of the optical fiber to penetrate (in the figure, the digital identification is not convenient, but does not affect the understanding of the technician. And the implementation), the fluorescent plate 32 and the visible light source 33 are both disposed in the detection inner chamber 341, and the light can be mixed in the detection inner chamber 341.

From the structural function and the convenience of implementation of the above monitoring box 34, the detecting inner chamber 341 is connected to the corresponding ultraviolet light source 221 by the optical fiber 31 in a one-to-one correspondence, and the mixed light information generated by each detecting inner chamber 341 is the connection thereof. The corresponding ultraviolet light source 221 is generated, reflecting the accuracy and one-to-one correspondence of the results. At the same time, this can increase the design randomness of the final light source monitoring terminal, and it is more convenient for customers to customize various display modules, and the product adaptability is very strong. At the same time, in the above implementation method, in order to facilitate the detection of the mixed light, a light transmission window (not shown in the figure, which is not convenient for digital identification, and therefore not shown) is directly observed on the side wall of the detection inner chamber 341. Alternatively, the color and brightness information of the mixed light is detected to know the operating state and the luminous power of the original ultraviolet light source 221. Of course, in the implementation, the light-transmissive window adopts ordinary glass or ordinary resin lens, so that deep ultraviolet rays will not pass through, and there is no possibility of ultraviolet radiation to the observer. Moreover, in order to improve the display convenience of the result, a display/display screen is further disposed on the monitoring box 34 for displaying the working state and the luminous power of the ultraviolet light source 221 obtained by detecting the inner chamber 341, thereby being more convenient for the worker to know.

When the number of the ultraviolet light sources 221 to be monitored in the outer casing 21 is plural; the number of the detection inner chambers 341 is usually preferably the same as the number of the ultraviolet light sources 221, and then one-to-one correspondence. However, in the implementation, when only a certain light source needs to be specifically monitored, the other detection inner chambers 341 are set to be in an inoperative state. Therefore, in order to improve the utilization of the detection inner chamber 341 in the implementation, the detection of the inner chamber 341 may also be adopted. The number is correspondingly reduced, and the two or more ultraviolet light sources 221 to be monitored are shared by one detection inner chamber 341, and then the switching operation is performed. The specific switching operation can be performed in the following manner: the detection inner chamber 341 is specifically designed to be refined, including a detection cavity having an opening/opening, and then a sliding door is disposed on the opening of the detecting cavity, and the sliding door can be along Sliding in the cross-sectional direction of the opening (this embodiment is not shown and labeled, but does not affect the understanding and implementation of the skilled person); then a plurality of the above-mentioned jacks for inserting the output end of the optical fiber 31 are arranged on the sliding door, and The output end of the optical fiber 31 corresponding to the light source is sequentially inserted into the jack; at this time, the sliding of the sliding door enables the fluorescent panel 32 to receive ultraviolet light of different light sources, thereby realizing the switching of monitoring of different light sources.

The above is the way in which a plurality of ultraviolet light sources 221 share a detection cavity and then switch (ie, many-to-one), and when one of the detection cavities being monitored is damaged (for example, the visible light source cannot be normally illuminated or monitored) cannot be monitored. At the same time, based on a similar method, one light source may be used corresponding to a plurality of detection cavities (ie, one-to-many); when one-to-many implementation is implemented, one of the detection cavities may be prevented from being damaged, and other normals may be utilized. The detection cavity is switched to ensure that the monitoring process can be performed normally. In a specific embodiment, the detecting inner chamber 341 may include a plurality of parallel detecting/opening detecting cavities arranged in parallel, and then providing a sliding door on the opening so as to be arranged side by side along the opening (also equivalent) Slide in the cross-sectional direction of the opening, and then insert the output end of the optical fiber 31 into the insertion hole of the sliding door, and switch by sliding. Of course, this method may be used to detect the existence of idle and waiting for the cavity, so the utilization rate will be lower than the above-mentioned many-to-one, so the technician can adopt the product according to the actual situation when the product is produced.

As can be seen from the above implementation, since it detects the color and brightness information of the final mixed light, if the brightness of the ultraviolet light source 221 does not change, the intensity of the visible light source 33 of another component light changes. A change in the color of the mixed light that is monitored results in an indication error in the illumination of the original ultraviolet light source 221. Therefore, the light emission of the visible light source 33 is kept constant. In the implementation of the present invention, the light source monitoring component 30 can include powering the visible light source 33 using a constant current constant voltage power source (not shown) to ensure a stable output of the visible light source 33.

Further, in order to reduce the error caused by the visible light source 33, the visible light source 33 maintains the same brightness at the factory during the whole process, and assists the feedback adjustment mode in addition to the constant current constant voltage power supply, specifically including being disposed in the detection. a first photosensor (not shown) for detecting the illumination of the visible light source 33 in the chamber 341, the data collected by the first photosensor is fed back to the constant current constant voltage power supply, and the constant current constant voltage power supply outputs a current according to the feedback signal. The visible light source 33 is used to ensure that the output of the visible light source 33 is always stable.

Finally, since the light-transmitting window is disposed on the sidewall of the detecting inner chamber 341, the final mixed light is viewed through the light-transmitting window to obtain the light color/lighting information, which is relatively susceptible to various interference factors such as human eye recognition/outside light. The effect is that the accuracy of the monitoring result of the ultraviolet light source 221 is lowered. Based on this situation, the present invention adds an optical signal processing unit 35 outside the light transmission window, and the optical signal processing unit 35 is configured to receive and analyze the mixed light transmitted through the light transmission window, and then directly output the detection result. The data is visually and digitally displayed on the display/display on the monitor box 34, which makes it easier for the worker to obtain the resulting information. Preferably, in the present invention, the optical signal processing unit 35, the structure of which is shown in FIG. 4, includes a second photosensor 351, a power source 352, and a data processing module 353, and a second photosensor 351, a power source 352, and a The data processing module 353 is electrically connected by wires to form a current loop. The second photosensor 351 is configured to detect the mixed light transmitted by the light transmission window and convert the digital light into a digital electrical signal; the data processing module 353 is configured to receive the digital electrical signal of the second photosensor 351, and The calculation and processing are performed to generate the luminous intensity of the primary ultraviolet light source 221. The calculation of the illumination condition of the original light source may include a detailed calculation process of first calculating the luminous intensity data of the fluorescent plate 32 based on the received luminous intensity data of the mixed light detected by the second photosensor 351 (because the visible light source 33 is illuminated) The intensity of the ultraviolet light emitted from the output end of the optical fiber 31 is calculated according to the conversion efficiency of the fluorescent plate 32 itself and the attenuation function (corresponding to the material of the fluorescent plate 32 itself); finally, the optical fiber 31 is received according to the optical fiber 31. The intensity of the transmitted ultraviolet light accounts for the proportion of the entire luminescence, and the overall light intensity of the illuminating source of the ultraviolet light source 221 is calculated. From the principle of mixed light color generation, if the intensity of the ultraviolet light source 221 (ultraviolet LED) ultraviolet LED is getting weaker, the color of the mixed light will change, and the data result of the obtained digital electrical signal will also change accordingly.

Further, in the above embodiment, when the second photosensor 351 receives the mixed light transmitted through the detection light transmission window, in a non-closed environment, it is easily interfered by other light, resulting in inaccurate final results. In order to eliminate interference in this aspect, the setting mode/detection mode of the second photosensor 351 can be adjusted. For example, it can be used. On the one hand, the environment around the exiting light path of the light-transmitting window is in a closed light-shielding environment, so as to eliminate the background light-emitting interference in the environment; on the other hand, the detection type can be adjusted on the detection mode, for example. The second photosensor 351 uses a polarized light sensor to detect only a specific polarized light, and a polarizing plate is added before detecting the light transmitting window on the sidewall of the inner chamber 341, so that the second photosensor 351 can only detect the light from the second photosensor 351. By generating the polarized light of the mixed light in the corresponding detection inner chamber 341, it is possible to prevent background illumination interference in the environment.

By using the sterilization head with the light source monitoring function of the invention, the light source monitoring component is added; the original is obtained by setting a fluorescent plate which generates fluorescence under the excitation of the ultraviolet light source, and a visible light source which emits visible light, and detects the mixed light of the fluorescent light and the visible light. The operation of the ultraviolet light source; can indicate the operation of the deep ultraviolet light source at low cost, and can also qualitatively indicate the optical power of the output of the light source LED.

Further, in the above-described sterilization head having the light source monitoring function of the present invention, the present invention further provides a sterilization apparatus comprising the above-described sterilization head having a light source monitoring function and a disinfecting and sterilization product assembly corresponding thereto. For example, it is similar to a flowing water sterilizing device which is composed of a sterilizing head 20 and a flowing water chamber 10, wherein the flowing water chamber 10 has a water inlet 11 and a water outlet 12, and a water circulation/flow passage is formed inside through a partition plate 13. With the sterilizing device of the present invention, the worker can conveniently obtain the operation of the UV-LED in use, thereby facilitating good control of the sterilization process; and can also qualitatively indicate the optical power of the output of the light source LED. And through the optical fiber guiding light, simultaneous monitoring of multiple light sources is realized, and the applicability of the product is improved.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims (10)

A sterilization head having a light source monitoring function, the sterilization head comprising an outer casing, and an ultraviolet light source assembly disposed in the outer casing; the ultraviolet light source assembly comprising an ultraviolet light source, wherein the sterilization head further comprises a light source monitoring component The light source monitoring component includes an optical fiber having a probe end and an output end, and a fluorescent plate; wherein a probe end of the optical fiber is used to collect ultraviolet light of the ultraviolet light source, and an output end is opposite to the fluorescent plate; The light source monitoring assembly also includes a visible light source for mixing light with the fluorescent synthesis of the fluorescent plate. The sterilizing head having a light source monitoring function according to claim 1, wherein the light source monitoring component further comprises an ultraviolet lens disposed between the ultraviolet light source and the probe end of the optical fiber, and the probe end of the optical fiber Located on the optical axis of the ultraviolet lens and abutting the ultraviolet lens; And/or, the ultraviolet light source assembly further includes a reflector disposed outside the ultraviolet light source. A sterilization head having a light source monitoring function according to claim 1 or 2, wherein said light source monitoring assembly further comprises a monitoring box for mounting an output end of said optical fiber, a fluorescent plate, and a visible light source. The sterilizing head with a light source monitoring function according to claim 3, wherein the monitoring box has a detecting inner chamber, and the fluorescent plate and the visible light source are both disposed in the detecting inner chamber, and the detecting is The chamber also has a receptacle for insertion of the output end of the optical fiber; The detection inner chamber is further provided with a light transmission window. A sterilization head having a light source monitoring function according to claim 4, wherein said detection inner chamber includes a detection cavity having an opening, and a sliding portion disposed on said detection cavity opening and sliding in the direction of the opening section door; The fluorescent plate and the visible light source are both disposed in the detecting cavity, and the insertion hole is disposed on the sliding door. A sterilization head having a light source monitoring function according to claim 1 or 2, wherein said light source monitoring component further comprises a constant current constant voltage power supply for supplying said visible light source. A sterilization head having a light source monitoring function according to claim 6, wherein said light source monitoring component further comprises a first photosensor for detecting said visible light source, said first photosensor and said constant current Constant voltage power connection. The sterilizing head with a light source monitoring function according to claim 4, wherein the light source monitoring component further comprises an optical signal processing unit, the optical signal processing unit comprising a second photoelectric sensor, a power source and a data processing module. And the second photosensor, the power supply, and the data processing module are electrically connected by wires to form a current loop; The second photosensor is configured to receive light transmitted by the light transmission window and convert the light into a digital electrical signal; the data processing module is configured to receive the digital electrical signal of the second photoelectric sensor, and calculate and generate the ultraviolet light source Luminous intensity data. The sterilizing head having a light source monitoring function according to claim 8, wherein the light transmission window is further provided with a polarizing plate; The second photosensor is a polarized light sensor. A sterilizing apparatus comprising the sterilizing head having a light source monitoring function according to any one of claims 1 to 9.

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