Dehumidification device and vehicle-mounted lamp
By setting insulation in the dehumidification device, the impact of external heat on electrolytes is reduced, and the problem of being easily damaged at high temperatures at high temperatures to eliminate the dehumidification effect and the stability of the device.
Patent Information
- Application Number
- CN202421119365.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Existing electrolytic dehumidifiers are prone to damage and failure at high temperatures, and cannot effectively solve the condensation problem caused by the difference in temperature and humidity inside and outside the car lights.
Set the heat insulation parts in the dehumidification device. The peripheral insulation parts of the electrolyte film to reduce the impact of external heat, and it is not easy to damage and fail the dehumidifying dehomato dehumidifier at high temperature.
Effectively reduce the effects of external heat on electrolytic membranes, and ensure that dehumidification devices are not easily damaged and failed at high temperatures, solving the problem of condensation caused by the difference in temperature and humidity differences in the inside and outside of the lamp.
Smart Images
Figure CN222417156U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of air dehumidification equipment, in particular to a dehumidification device and a vehicle-mounted lamp. Background Art
[0002] The car lights are open structures to relieve the internal air pressure that expands as the temperature inside the lights rises when they are turned on. When the lights are turned on and off repeatedly, the outside air enters the lights through the vents, and the moisture in the outside air also enters the lights. It is inevitable that condensation will form on the inner surface of the lights due to the difference in temperature and humidity inside and outside the lights, affecting the use of the lights. The dehumidification effect of the electrolytic dehumidifier is very good, but the electrolyte membrane cannot withstand high temperatures, which makes the electrolytic dehumidifier easily damaged and ineffective at high temperatures. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a dehumidification device, in which a heat insulating member is arranged on the periphery of the electrolyte membrane to reduce the influence of external heat on the electrolyte membrane, and the dehumidification device is not easily damaged or failed at high temperature.
[0004] The utility model also provides a vehicle-mounted lamp with the dehumidification device.
[0005] The dehumidification device according to the first embodiment of the utility model includes a shell, a dehumidification element, a first thermal insulation member and a second thermal insulation member. The shell has an airway. The dehumidification element is arranged in the airway, and the dehumidification element includes a cathode layer, an electrolyte membrane, and an anode layer stacked on each other, and the electrolyte membrane is located between the cathode layer and the anode layer. The first thermal insulation member and the second thermal insulation member are both connected to the shell, and the first thermal insulation member and the second thermal insulation member can allow gas to pass through. The first thermal insulation member and the second thermal insulation member are respectively located on both sides of the dehumidification element, and the thermal conductivity of the first thermal insulation member and the second thermal insulation member is lower than the thermal conductivity of air.
[0006] The dehumidification device according to the embodiment of the utility model has at least the following beneficial effects:
[0007] The first thermal insulation member and the second thermal insulation member are placed on both sides of the dehumidification element. Because the thermal conductivity of the first thermal insulation member and the second thermal insulation member is lower than the thermal conductivity of the air, such a setting can effectively reduce the impact of external heat on the electrolyte membrane, and the dehumidification device is not easy to be damaged or fail at high temperatures.
[0008] According to some embodiments of the present invention, the material of the first thermal insulation component is aerogel, and / or the material of the second thermal insulation component is aerogel.
[0009] According to some embodiments of the present invention, the cathode layer is annular, the cathode layer is provided with cathode gas holes, and a part of the electrolyte membrane covers the cathode gas holes. And / or, the anode layer is annular, the anode layer is provided with anode gas holes, and a part of the electrolyte membrane covers the anode gas holes.
[0010] According to some embodiments of the utility model, the shell includes a first shell member and a second shell member, the first shell member and the second shell member are detachably connected, the first shell member and the second shell member jointly define an air outlet, the second shell member includes a hollow extension portion, one end of the extension portion abuts against the cathode layer, the inner cavity of the extension portion is a part of the air outlet, the inner circumferential wall of the extension portion surrounds the cathode air hole, and the second thermal insulation member is arranged in the inner cavity of the extension portion.
[0011] According to some embodiments of the present invention, the dehumidification device further includes a third thermal insulation member, which surrounds the extension portion.
[0012] According to some embodiments of the utility model, the dehumidification device further comprises a limiting ring. The limiting ring is sleeved on the periphery of the extension portion, the inner wall of the first shell comprises a first abutting surface, the inner wall of the second shell comprises a second abutting surface, and the limiting ring and the third heat insulating member are clamped between the first abutting surface and the second abutting surface.
[0013] According to some embodiments of the utility model, the dehumidification device further comprises a fourth heat insulating member. The fourth heat insulating member is a ring structure with two ends open, the fourth heat insulating member is sleeved on the outer periphery of the extension portion, the fourth heat insulating member is arranged inside the limiting ring, and the outer periphery of the fourth heat insulating member is in contact with the inner wall surface of the limiting ring.
[0014] According to some embodiments of the utility model, the dehumidification device further comprises a waterproof and breathable membrane, and the waterproof and breathable membrane is attached to a surface of the second thermal insulation component on a side facing away from the cathode layer.
[0015] According to the vehicle-mounted lamp of the second embodiment of the utility model, the dehumidification device of any one of the first embodiment is further provided. The lampshade includes a mounting hole, and the housing is mounted on the lampshade through the mounting hole. The air passage also includes a first gas inlet and a second gas inlet located on different sides of the electrolyte membrane, respectively, the anode layer is located between the first gas inlet and the electrolyte membrane, the cathode layer is located between the second gas inlet and the electrolyte membrane, the first gas inlet and the second gas inlet are arranged inside the lampshade, and the second gas inlet and the second gas inlet are arranged outside the lampshade.
[0016] The vehicle-mounted lamp according to the embodiment of the utility model has at least the following beneficial effects: the first gas inlet and outlet are arranged inside the lampshade, so that the anode layer can contact with the air inside the lampshade to decompose the moisture in the air; the second gas inlet and outlet are arranged outside the lampshade, so that the water vapor generated by the cathode layer can be smoothly discharged to the outside; the first thermal insulation member and the second thermal insulation member are placed on both sides of the dehumidification element, and because the thermal conductivity of the first thermal insulation member and the second thermal insulation member is lower than the thermal conductivity of the air, such an arrangement can effectively reduce the influence of external heat on the electrolyte membrane, and the dehumidification device is not easy to be damaged or fail at high temperatures.
[0017] According to some embodiments of the utility model, the dehumidification device further includes a sealing ring, which is elastic. The housing includes a first shell and a second shell, the first shell further includes a plurality of protrusions and a main body, two adjacent protrusions are arranged at intervals, the plurality of protrusions are arranged around the outer peripheral surface of the main body, the protrusions protrude outward relative to the outer peripheral surface of the main body, and the sealing ring and the inner peripheral wall of the mounting hole are clamped between the first shell and the second shell.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0020] Figure 1 A first exploded view of a dehumidification device according to some embodiments of the present utility model;
[0021] Figure 2 A second exploded view of a dehumidification device according to some embodiments of the present invention;
[0022] Figure 3 A first stereoscopic view of a dehumidification device according to some embodiments of the present utility model;
[0023] Figure 4 A second stereoscopic view of a dehumidification device according to some embodiments of the present utility model;
[0024] Figure 5 It is a cross-sectional view of a dehumidification device according to some embodiments of the present invention.
[0025] Figure numerals: shell 100, first shell 101, second shell 102, first thermal insulation member 103, second thermal insulation member 104, cathode layer 105, anode layer 106, electrolyte membrane 107, dehumidification element 108, third thermal insulation member 109, limiting ring 110, fourth thermal insulation member 111, waterproof breathable membrane 112, sealing ring 113, protrusion 114, airway 115, first gas inlet and outlet 116, second gas inlet and outlet 117, screw cover 118, extension portion 201, first abutting surface 501, second abutting surface 502, mounting hole 503, lampshade 504. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0030] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0031] refer to Figure 1 According to the first aspect of the present utility model, the dehumidification device includes a shell 100, a dehumidification element 108, a first thermal insulation member 103 and a second thermal insulation member 104. The shell 100 has an air passage 115. The dehumidification element 108 is arranged in the air passage 115, and the dehumidification element 108 includes a cathode layer 105, an electrolyte membrane 107, and an anode layer 106 which are stacked on each other, and the electrolyte membrane 107 is located between the cathode layer 105 and the anode layer 106. The first thermal insulation member 103 and the second thermal insulation member 104 are both connected to the shell 100, and the first thermal insulation member 103 and the second thermal insulation member 104 can allow gas to pass through. The first thermal insulation member 103 and the second thermal insulation member 104 are respectively located on both sides of the dehumidification element 108, and the thermal conductivity of the first thermal insulation member 103 and the second thermal insulation member 104 is lower than the thermal conductivity of air. Specifically, the principle of electrolytic dehumidification is as follows: the anode layer 106 and the cathode layer 105 are connected to a power source, and by applying direct current, the water molecules in the air undergo a decomposition reaction in the anode layer 106 and are electrolyzed into hydrogen ions and oxygen. Then, the generated hydrogen ions migrate to the cathode layer 105 through the electrolyte membrane 107 under the action of the electric field force. In the cathode layer 105, the hydrogen ions react with the oxygen in the air and are reduced to water vapor, thereby achieving the removal of water molecules at one end of the anode layer 106. The first thermal insulation member 103 and the second thermal insulation member 104 in the utility model are placed on both sides of the dehumidification element 108, and because the thermal conductivity of the first thermal insulation member 103 and the second thermal insulation member 104 is lower than the thermal conductivity of the air, such a setting can effectively reduce the influence of external heat on the electrolyte membrane 107, and the dehumidification device is not easy to be damaged or fail at high temperatures.
[0032] In some embodiments of the present invention, the material of the first thermal insulation member 103 is aerogel, and / or the material of the second thermal insulation member 104 is aerogel. Aerogel has extremely low thermal conductivity and excellent thermal insulation performance. Secondly, since aerogel has an extremely high porosity, although the pore size is very small, the pores are large in number and evenly distributed, so that aerogel still has a certain air permeability, so using aerogel as a thermal insulation member still does not affect the dehumidification of water molecules in the air by the dehumidification element 108.
[0033] refer to Figure 1 In some embodiments of the present invention, the cathode layer 105 is annular, the cathode layer 105 is provided with cathode air holes, and a part of the electrolyte membrane 107 covers the cathode air holes. And / or, the anode layer 106 is annular, the anode layer 106 is provided with anode air holes, and a part of the electrolyte membrane 107 covers the anode air holes. The cathode layer 105 is provided in an annular shape to increase the area of the electrolyte membrane 107 in contact with the air on the cathode side, so that the electrolyte membrane 107 can contact and exchange with water molecules in the air, and the anode layer 106 is provided in an annular shape to increase the area of the electrolyte membrane 107 in contact with the air on the anode side, so that the hydrogen ions can react with the oxygen in the air to generate water vapor for discharge.
[0034] refer to Figure 2 and Figure 5 In some embodiments of the present invention, the housing 100 includes a first shell 101 and a second shell 102, which are detachably connected, and the first shell 101 and the second shell 102 jointly define an air outlet 115, and the second shell 102 includes a hollow extension 201, one end of the extension 201 abuts against the cathode layer 105, the inner cavity of the extension 201 is a part of the air outlet 115, the inner peripheral wall of the extension 201 surrounds the cathode air hole, and the second heat insulation member 104 is arranged in the inner cavity of the extension 201. Figure 5 The extension 201 abutting against the cathode layer 105 can make the overall structure of the dehumidification element 108 more stable and less likely to loosen and fail. Figure 2 The hollow extension part 201 is designed so that the inner cavity of the extension part 201 serves as a part of the air channel 115, so that the extension part 201 can abut against the cathode layer 105 without affecting the contact between the electrolyte membrane 107 and the air on the cathode side, thereby ensuring the electrolysis efficiency.
[0035] refer to Figure 3 and Figure 5 In some embodiments of the present invention, the dehumidification device further includes a third heat insulating member 109, and the third heat insulating member 109 surrounds the extension portion 201. The third heat insulating member 109 is used to isolate the heat brought by the second shell 102 contacting the outside world, further reduce the influence of the outside heat on the dehumidification element 108, and improve the performance of the electrolyte membrane 107.
[0036] It should be noted that, in some embodiments of the present invention, the thermal conductivity of the third thermal insulation member 109 and the fourth thermal insulation member 111 mentioned below is also lower than the thermal conductivity of air. Preferably, the material used is aerogel, which can provide good thermal insulation and breathability effects.
[0037] refer to Figure 1 and Figure 5In some embodiments of the present utility model, the dehumidification device further includes a limiting ring 110. The limiting ring 110 is sleeved on the outer periphery of the extension portion 201, the inner wall of the first shell 101 includes a first abutting surface 501, the inner wall of the second shell 102 includes a second abutting surface 502, and the limiting ring 110 and the third thermal insulation member 109 are clamped between the first abutting surface 501 and the second abutting surface 502. In this way, the third thermal insulation member 109 can be prevented from loosening, and the stability of the structure and the thermal insulation effect of the third thermal insulation member 109 can be improved.
[0038] It should be noted that the reference Figure 1 and Figure 2 In some embodiments of the present invention, the surface of one side of the limit ring 110 abutting against the third thermal insulation member 109 is a curved surface, and the material used for the third thermal insulation member 109 is flexible, so that when the limit ring 110 is pressed onto the third thermal insulation member 109, the pressing area between the limit ring 110 and the third thermal insulation member 109 is increased to limit the relative rotation of the limit ring 110 and the third thermal insulation member 109.
[0039] It should be noted that the reference Figure 1 and Figure 2 In some embodiments of the present invention, a plurality of spaced protrusions are provided on the outer circumference of the limit ring 110 for cooperating with the grooves in the first shell 101 to limit the rotation of the limit ring 110 around its own axis and improve the stability of the structure.
[0040] refer to Figure 1 and Figure 5 In some embodiments of the utility model, the dehumidification device further includes a fourth thermal insulation member 111. The fourth thermal insulation member 111 is an annular structure with openings at both ends. The fourth thermal insulation member 111 is sleeved on the outer periphery of the extension portion 201. The fourth thermal insulation member 111 is arranged inside the limiting ring 110, and the outer periphery of the fourth thermal insulation member 111 is in contact with the inner wall surface of the limiting ring 110. The fourth thermal insulation member 111 is used to isolate the heat brought by the contact between the limiting ring 110 and the outside world, further reduce the influence of the external heat on the dehumidification element 108, and improve the performance of the electrolyte membrane 107. At the same time, the design of the annular shape and sleeved on the outer periphery of the extension portion 201 ensures that the fourth thermal insulation member 111 will not affect the contact between the cathode layer 105 and the external air.
[0041] refer to Figure 1 and Figure 5In some embodiments of the present invention, the dehumidification device further includes a waterproof breathable membrane 112, which is attached to the surface of the second heat insulating member 104 on the side facing away from the cathode layer 105. The waterproof breathable membrane 112 has a large number of microporous structures, and gas can easily pass through the waterproof breathable membrane 112, while the size of liquid water droplets exceeds the diameter of the micropores and cannot pass through the micropores of the waterproof breathable membrane 112, so that the waterproof breathable membrane 112 has both waterproof and breathable functions, and the waterproof function can prevent external water droplets from invading the inside of the housing 100 and affecting the performance of the dehumidification device.
[0042] At the same time, it should be noted that when water exists in the form of vapor, it has the physical properties of gas, so the waterproof breathable membrane 112 can also allow the water vapor generated by the cathode layer 105 to pass smoothly and be discharged outside the device.
[0043] It should be noted that the waterproof breathable membrane 112 is a preferred solution but not a mandatory solution, and the absence of the waterproof breathable membrane 112 does not affect the functional operation of the dehumidification device.
[0044] refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 According to the vehicle-mounted lamp of the second embodiment of the utility model, the dehumidification device of any one of the first embodiment is further provided. The lampshade 504 is provided. The lampshade 504 includes a mounting hole 503, and the housing 100 is mounted on the lampshade 504 through the mounting hole 503. The gas channel 115 also includes a first gas inlet and outlet 116 and a second gas inlet and outlet 117 respectively located on different sides of the electrolyte membrane 107, the anode layer 106 is located between the first gas inlet and outlet 116 and the electrolyte membrane 107, the cathode layer 105 is located between the second gas inlet and outlet 117 and the electrolyte membrane 107, the first gas inlet and outlet 116 is arranged inside the lampshade 504, and the second gas inlet and outlet 117 is arranged outside the lampshade 504.
[0045] In this way, the first gas inlet and outlet 116 is arranged inside the lampshade 504, so that the anode layer 106 can contact the air inside the lampshade 504 to decompose the moisture in the air. The second gas inlet and outlet 117 is arranged outside the lampshade 504, so that the water vapor generated by the cathode layer 105 can be smoothly discharged to the outside. The first thermal insulation member 103 and the second thermal insulation member 104 are placed on both sides of the dehumidification element 108. Because the thermal conductivity of the first thermal insulation member 103 and the second thermal insulation member 104 is lower than the thermal conductivity of the air, such an arrangement can effectively reduce the impact of external heat on the electrolyte membrane 107, and the dehumidification device is not easy to be damaged or fail at high temperatures.
[0046] refer to Figure 1 , Figure 3 , Figure 4 and Figure 5In some embodiments of the utility model, the dehumidification device further includes a sealing ring 113, and the sealing ring 113 is elastic. The housing 100 includes a first shell 101 and a second shell 102. The first shell 101 further includes a plurality of protrusions 114 and a main body. Two adjacent protrusions 114 are arranged at intervals. The plurality of protrusions 114 are arranged around the outer peripheral surface of the main body. The protrusions 114 protrude outward relative to the outer peripheral surface of the main body. The sealing ring 113 and the inner peripheral wall of the mounting hole 503 are clamped between the first shell 101 and the second shell 102. By utilizing the elasticity of the sealing ring 113, the first shell 101 and the second shell 102 can tightly mount the dehumidification device in the mounting hole 503. At the same time, the sealing ring 113 can also prevent external water vapor from entering the interior of the lampshade 504, thereby improving the dryness of the lampshade 504.
[0047] It should be noted that the reference Figure 1 and Figure 4 In some embodiments of the present invention, the dehumidification device further includes a screw cap 118, which is detachably connected to the second shell 102, and the screw cap 118 and the second shell 102 together wrap the waterproof breathable membrane 112. Such a configuration can facilitate the disassembly and assembly of the waterproof breathable membrane 112, and during use, the screw cap 118 can also play a role in dustproof and waterproofing the waterproof breathable membrane 112, thereby increasing the life of the waterproof breathable membrane 112.
[0048] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
Claims
1. A dehumidification device, characterized in that: include: a housing having an airway; A dehumidification element, the dehumidification element is arranged in the air passage, the dehumidification element comprises a cathode layer, an electrolyte membrane, and an anode layer which are stacked on each other, the electrolyte membrane is located between the cathode layer and the anode layer; a first thermal insulation member; a second thermal insulation member, wherein the first thermal insulation member and the second thermal insulation member are both connected to the shell, the first thermal insulation member and the second thermal insulation member are both capable of allowing gas to pass through, and the first thermal insulation member and the second thermal insulation member are respectively located on both sides of the dehumidification element; The thermal conductivity of the first thermal insulation member and the second thermal insulation member are both lower than the thermal conductivity of air.
2. The dehumidification device according to claim 1, characterized in that: The material of the first thermal insulation component is aerogel, and / or the material of the second thermal insulation component is aerogel.
3. The dehumidification device according to claim 1, characterized in that: The cathode layer is annular, and is provided with a cathode through hole, and a part of the electrolyte membrane covers the cathode through hole; and / or, The anode layer is annular and is provided with an anode gas hole, and a portion of the electrolyte membrane covers the anode gas hole.
4. The dehumidification device according to claim 3, characterized in that: The shell includes a first shell member and a second shell member, the first shell member and the second shell member are detachably connected, the first shell member and the second shell member jointly define the air channel, the second shell member includes a hollow extension portion, one end of the extension portion abuts the cathode layer, the inner cavity of the extension portion is a part of the air channel, the inner circumferential wall of the extension portion surrounds the cathode air hole, and the second thermal insulation member is arranged in the inner cavity of the extension portion.
5. The dehumidification device according to claim 4, characterized in that: The dehumidification device further includes a third heat insulating member surrounding the protruding portion.
6. The dehumidification device according to claim 5, characterized in that: The dehumidification device also includes: A limiting ring is sleeved on the periphery of the protruding portion, the inner wall of the first shell component includes a first abutment surface, the inner wall of the second shell component includes a second abutment surface, and the limiting ring and the third thermal insulation component are clamped between the first abutment surface and the second abutment surface.
7. The dehumidification device according to claim 6, characterized in that: The dehumidification device also includes: The fourth thermal insulation member is a ring-shaped structure with openings at both ends, the fourth thermal insulation member is sleeved on the outer periphery of the protruding portion, the fourth thermal insulation member is arranged inside the limiting ring, and the outer periphery of the fourth thermal insulation member is in contact with the inner wall surface of the limiting ring.
8. The dehumidification device according to claim 1, characterized in that: The dehumidification device further comprises a waterproof and breathable membrane, and the waterproof and breathable membrane is attached to a surface of the second thermal insulation component on a side facing away from the cathode layer.
9. A vehicle-mounted lamp, characterized in that: The vehicle-mounted lamp comprises: The dehumidification device according to any one of claims 1 to 8, A lampshade, wherein the lampshade comprises a mounting hole, and the housing is mounted on the lampshade through the mounting hole; The gas channel also includes a first gas inlet and a second gas inlet and a second gas inlet respectively located on different sides of the electrolyte membrane, the anode layer is located between the first gas inlet and the electrolyte membrane, the cathode layer is located between the second gas inlet and the electrolyte membrane, the first gas inlet and the second gas inlet and the second gas inlet are arranged inside the lampshade, and the second gas inlet and the second gas inlet are arranged outside the lampshade.
10. The vehicle-mounted lamp according to claim 9, characterized in that: The dehumidification device also includes a sealing ring, and the sealing ring is elastic; The housing comprises a first housing member and a second housing member; The first shell also includes a plurality of protrusions and a main body, wherein two adjacent protrusions are arranged at intervals, and the plurality of protrusions are arranged around the outer circumference of the main body, and the protrusions protrude outward relative to the outer circumference of the main body; The sealing ring and the inner peripheral wall of the mounting hole are clamped between the first shell member and the second shell member.