Dehumidifying ventilation valve, electronic component and vehicle

Abstract

The invention relates to the technical field of ventilation valves, in particular to a dehumidification ventilation valve, an electronic component and a vehicle, and aims to solve the problem that an existing ventilation valve can only ventilate and cannot dehumidify. In order to achieve the purpose, the dehumidification ventilation valve comprises a valve seat and a valve deck, the valve seat and the valve deck are detachably connected, and a valve cavity penetrating through the valve seat is formed in the valve seat; a breathable film is arranged at the opening end, adjacent to the valve cover, of the valve cavity; a water absorption module and a heating module are arranged in the valve cavity; the heating module is arranged at the bottom of the valve cavity; the water absorption module is arranged between the breathable film and the heating module. According to the dehumidification ventilation valve, moisture in gas flowing through the water absorption module can be absorbed through the water absorption module, the moisture in the water absorption module can be evaporated through the heating module, and the moisture is discharged out of the dehumidification ventilation valve, so that the dehumidification effect is achieved, and the water absorption module has the capacity of repeatedly absorbing water.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation valves, and specifically provides a dehumidification ventilation valve, an electronic component and a vehicle. Background Art

[0002] Currently, high-performance vehicles are increasingly dependent on the advanced functions provided by complex electronic components. These key components usually have dust and water resistance requirements, so the interior needs to be designed as a closed environment. This requires safe and reliable sealed boxes to protect these components from the impact of harsh driving conditions. In the past, engineers in the automotive industry have adopted various design solutions to achieve reliable protection for automotive lights, ECU electronic control units, oxygen sensors, electric window motors, automotive instruments and other components, but they still have to face problems such as a sharp rise in component temperature, unbalanced pressure difference between the inside and outside of the components, and water vapor, moisture, and fog inside the components.

[0003] When such electronic components are working in an environment with large temperature changes, the pressure difference between the inside and outside of the components may increase due to the temperature difference between the inside and outside of the components, which becomes a potential adverse factor affecting the safety of the electronic components. For this reason, a breathable membrane or a breathable valve is usually set on the electronic components to balance the internal and external air pressure of the electronic components to ensure that the pressure difference between the inside and outside of the electronic components is not too large. However, the breathable membrane or the breathable valve will cause moisture to enter the housing of the electronic components. At the same time, if the moisture in the electronic components cannot be quickly removed, it will condense in the electronic components, thereby creating a risk of damaging the electronic components. For example, if there is too much water vapor in the headlights of a car, it will affect the lighting effect of the headlights and even pose a safety hazard; if there is too much water vapor in the control unit of a car, it will cause the control unit to short-circuit and fail. Summary of the invention

[0004] The present invention aims to solve the above technical problem, that is, to solve the problem that the existing ventilation valve can only allow ventilation but not dehumidify.

[0005] In a first aspect, the present invention provides a dehumidifying breathable valve, comprising a valve seat and a valve cover, wherein the valve seat and the valve cover are connected in a detachable manner, and a valve cavity penetrating the valve seat is arranged in the valve seat; a breathable membrane is arranged at an opening end of the valve cavity adjacent to the valve cover; a water absorption module and a heating module are arranged in the valve cavity; the heating module is arranged at the bottom of the valve cavity; the water absorption module is arranged between the breathable membrane and the heating module.

[0006] Furthermore, a first humidity sensor is provided in the valve cavity for collecting a first humidity value in the valve cavity.

[0007] Furthermore, the valve seat includes a bottom plate and a side wall arranged on the bottom plate and extending toward the valve cover; a through hole is opened on the bottom plate, and the bottom plate and the side wall enclose the valve cavity.

[0008] Furthermore, it also includes a heat insulation layer, which is arranged between the heating module and the bottom plate.

[0009] Furthermore, the heating module and the water absorption module are arranged in close contact with each other; a limiting structure is arranged on the inner wall of the side wall of the valve seat, and the heating module and the water absorption module that are in close contact with each other are arranged in the limiting structure in a detachable manner.

[0010] Furthermore, a connecting portion is provided at the bottom of the valve seat, and the connecting portion extends in a direction away from the bottom plate of the valve seat; a sealing component is sleeved on the connecting portion at the connection between the connecting portion and the bottom of the valve seat.

[0011] In a second aspect, the present invention further provides an electronic component, comprising: a shell, a mounting hole being provided on the surface of the shell; the dehumidification and breathable valve as described above, the dehumidification and breathable valve being arranged in the mounting hole; a circuit board, the circuit board being arranged in the shell; and a connector, the connector being respectively connected to the heating module of the dehumidification and breathable valve and the circuit board.

[0012] Furthermore, a second humidity sensor is included to collect a second humidity value in the shell.

[0013] Furthermore, it also includes a control module, which is respectively connected to the first humidity sensor and the second humidity sensor to obtain the first humidity value and the second humidity value; and the control module is connected to the circuit board, and the control module controls the operation of the heating module through the circuit board according to the obtained first humidity value and the second humidity value.

[0014] In a third aspect, the present invention further provides a vehicle, comprising the electronic component as described above.

[0015] In the case of adopting the above technical solution, the present invention can arrange a water absorption module and a heating module in the valve cavity of the dehumidification breathable valve, so that the water absorption module can not only absorb the moisture in the gas flowing through the water absorption module, but also evaporate the moisture in the water absorption module through the heating module and discharge it out of the dehumidification breathable valve, thereby playing a dehumidification role and enabling the water absorption module to have the ability to absorb water repeatedly. The dehumidification breathable valve in the present application can actively dehumidify through the water absorption module and the heating module while ensuring the internal and external air pressure balance of the electronic component, remove the moisture in the electronic component housing, and avoid the risk of electronic component failure caused by condensed water generated in the inner cavity of the electronic component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] In the attached figure:

[0018] Figure 1 Schematic diagram of the overall structure of the dehumidification and ventilation valve in the embodiment of the present application;

[0019] Figure 2 and Figure 3 for Figure 1 The internal structure diagram of the dehumidification breathable valve is shown;

[0020] Figure 4 for Figure 1 An exploded view of the dehumidification breathable valve shown;

[0021] Figure 5 and Figure 6 for Figure 1 A schematic diagram of the structure of the valve seat of the dehumidification and ventilation valve shown;

[0022] Figure 7 and Figure 8 Schematic diagram of the structure of the electronic components in the embodiment of the present application.

[0023] Reference numerals:

[0024] 1. Dehumidification and ventilation valve; 11. Valve seat; 111. Bottom plate; 112. Side wall; 113. Through hole; 12. Valve cover; 13. Valve cavity; 14. Breathable membrane; 15. Water absorption module; 16. Heating module; 17. Insulation layer; 18. Connecting part; 19. Sealing component; 2. Electronic component; 21. Housing; 22. Circuit board; 23. Connector; 24. Wiring harness. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0026] First, it should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "longitudinal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figures 1 to 4 As shown, the embodiment of the present application provides a dehumidification breathable valve 1, comprising: a valve seat 11 and a valve cover 12, the valve seat 11 and the valve cover 12 are connected in a detachable manner. A valve cavity 13 penetrating the valve seat 11 is arranged in the valve seat 11; a breathable membrane 14 is arranged at the open end of the valve cavity 13 adjacent to the valve cover 12; a water absorption module 15 and a heating module 16 are arranged in the valve cavity 13. The breathable membrane 14 is arranged at the open end of the valve cavity 13 adjacent to the valve cover 12; the heating module 16 is arranged at the bottom of the valve cavity 13; and the water absorption module 15 is arranged between the breathable membrane 14 and the heating module 16.

[0029] Furthermore, a first humidity sensor (not shown in the figure) is also provided in the valve cavity 13 for collecting a first humidity value in the valve cavity 13 .

[0030] Furthermore, if Figure 5 As shown, the valve seat 11 comprises a bottom plate 111 and a side wall 112 arranged on the bottom plate 111 and extending toward the valve cover 12, and a through hole 113 is opened on the bottom plate 111. The bottom plate 111 and the side wall 112 of the valve seat 11 form a valve cavity 13.

[0031] In the embodiment of the present application, the valve seat 11 and the valve cover 12 of the dehumidification breathable valve 1 are connected in a detachable manner, for example, by a snap-fit ​​structure, or by a threaded structure. The breathable membrane 14 covers the open end of the valve cavity 13 adjacent to the valve cover 12, for example, the breathable membrane 14 is welded to the open end of the valve cavity 13 by ultrasonic welding. After the valve cover 12 is connected to the valve seat 11, a certain gap space is left between the valve cover 12 and the breathable membrane 14. By opening a through hole 113 on the bottom plate 111, the gas can enter the valve cavity 13 and flow through the water absorption module 15 arranged in the valve cavity 13. In the process of the gas flowing through the water absorption module 15, the moisture in the gas is absorbed by the water absorption module 15. Then, the gas passes through the breathable membrane 14 and enters the gap space between the valve cover 12 and the breathable membrane 14, and is discharged from the dehumidification breathable valve 1 from the connection between the valve seat 11 and the valve cover 12. The heating module 16 disposed below the water absorption module 15 can heat the water absorption module 15 so that the water absorbed by the water absorption module 15 evaporates; and then passes through the breathable membrane 14 and is discharged from the dehumidification breathable valve 1 .

[0032] The dehumidification breathable valve 1 in the embodiment of the present application can not only absorb moisture in the gas flowing through the water absorption module 15 through the combination of the water absorption module 15 and the heating module 16, but also evaporate the moisture in the water absorption module 15 through the heating module 16 and discharge it out of the dehumidification breathable valve 1, thereby playing a dehumidification role and enabling the water absorption module 15 to have the ability to repeatedly absorb water.

[0033] The breathable membrane 14 can be a waterproof breathable membrane made of expanded polytetrafluoroethylene, or a composite membrane formed by a composite of an expanded polytetrafluoroethylene microporous membrane and a non-woven fabric. The material of the breathable membrane 14 is not specifically limited in the present embodiment.

[0034] Further, the water absorption module 15 and the heating module 16 arranged in the valve cavity 13 can be fixed in the valve cavity 13 by bonding, for example, the water absorption module 15 and the heating module 16 are respectively bonded to the inner wall of the side wall 112 of the valve seat 11; or, the heating module 16 and the water absorption module 15 can be arranged in a fitting manner (the heating module 16 is located at the bottom of the water absorption module 15), and a limiting structure (not shown in the figure) can be arranged on the inner wall of the side wall 112 of the valve seat 11, for example, the limiting structure can be a limiting groove or a clamping structure, so that the heating module 16 and the water absorption module 15 that are fitted can be arranged in the limiting structure in a detachable manner, so that the heating module 16 and the water absorption module 15 can be taken out of the valve cavity 13 when needed. The embodiment of the present application does not specifically limit the form of the limiting structure. In a specific embodiment, the heating module 16 can be a heating coil.

[0035] Furthermore, if Figure 3 and Figure 4As shown, a heat insulating layer 17 is provided between the heating module 16 and the bottom plate 111 to protect the bottom plate 111 and prevent the bottom plate 111 from being damaged by high temperature when the heating module 16 heats the water absorption module 15. The heat insulating layer 17 can be fixed on the bottom plate 111 or on the inner wall of the side wall 112 of the valve seat 11, for example, by bonding; or, the heat insulating layer 17 can also be detachably provided in the valve cavity 13.

[0036] Furthermore, if Figure 3 and Figure 6 As shown, a connecting portion 18 is provided at the bottom of the valve seat 11, and the connecting portion 18 extends in a direction away from the bottom plate 111 of the valve seat 11, so as to fix the dehumidification and ventilation valve 1 on the component on which it is installed, for example, on the housing of the component. In a specific embodiment, as Figure 3 and Figure 6 As shown, the connection part 18 is a slot structure. The lower end of the connection part 18 can be inserted into the housing of the component on which the dehumidification breathable valve 1 is installed, and the dehumidification breathable valve 1 is fixed to the housing of the component by restricting the housing of the above-mentioned component in the slot of the connection part 18. The connection part 18 can also be fixed to the component on which it is installed in a threaded connection. The embodiment of the present application does not specifically limit the structure of the connection part 18.

[0037] Furthermore, Figure 3 and Figure 6 As shown, a sealing component 19 is sleeved at the connection between the connecting portion 18 and the bottom of the valve seat 11. When the dehumidification breathable valve 1 is installed on the above-mentioned component, the sealing component 19 ensures the sealing of the connection between the connecting portion 18 and the component on which the dehumidification breathable valve 1 is installed, which plays a role of waterproofing and dustproofing.

[0038] In a specific embodiment, the sealing component 19 may be an O-type sealing ring or an O-type foam sealing gasket. Its material may be silicone rubber, nitrile rubber or hydrogenated nitrile rubber. The embodiment of the present application does not specifically limit the structure and material of the sealing component 19.

[0039] like Figure 7 and Figure 8 As shown, the embodiment of the present application further provides an electronic component 2, comprising: the dehumidification and ventilation valve 1 as described above, a housing 21, a circuit board 22 and a connector 23. A mounting hole is provided on the surface of the housing 21, and the dehumidification and ventilation valve 1 is arranged in the mounting hole. The circuit board 22 is arranged in the housing 21; the connector 23 is respectively connected to the heating module 16 of the dehumidification and ventilation valve 1 and the circuit board 22.

[0040] Specifically, the dehumidifying breathable valve 1 is mounted on the electronic component 2 by connecting the connecting portion 18 of the dehumidifying breathable valve 1. The valve seat 11 and the valve cover 12 of the dehumidifying breathable valve 1 are located outside the housing 21 of the electronic component 2. The connector 23 is located in the housing 21, plugged into the circuit board 22, and connected to the heating module 16 in the dehumidifying breathable valve 1 through the wiring harness 24 passing through the through hole 113 opened on the bottom plate 111. The heating module 16 is powered by the circuit board 22, so that there is no need to set a separate power supply for the heating module 16, which not only reduces the cost, but also saves space and simplifies the assembly process.

[0041] The connection portion 18 of the dehumidification and ventilation valve 1 can be inserted into the mounting hole of the housing 21 in a plug-in manner, or can be connected to the mounting hole of the housing 21 in a threaded manner. The embodiment of the present application does not specifically limit the connection method between the connection portion 18 of the dehumidification and ventilation valve 1 and the mounting hole of the housing 21.

[0042] Furthermore, a second humidity sensor (not shown in the figure) is provided in the housing 21 of the electronic component 2, for collecting a second humidity value in the housing 21. In addition, a control module (not shown in the figure) is also provided in the electronic component 2, and the control module is respectively connected to the first humidity sensor and the second humidity sensor, for obtaining a first humidity value in the valve cavity 13 collected by the first humidity sensor and a second humidity value in the housing 21 collected by the second humidity sensor. Furthermore, the control module is also connected to the circuit board 22, for controlling the operation of the heating module 16 through the circuit board 22 according to the first humidity value and the second humidity value obtained by the control module.

[0043] Furthermore, the control module may be integrated on the circuit board 22 .

[0044] When the electronic component 2 in the embodiment of the present application is working, the dehumidification breathable valve 1 installed on the housing 21 of the electronic component 2 is connected to the inside of the housing 21 of the electronic component 2. When the pressure inside the housing 21 of the electronic component 2 increases due to the increase in temperature, the pressure difference between the inside and outside of the housing 21 of the electronic component 2 is adjusted by the breathable membrane 14 in the dehumidification breathable valve 1. When the gas in the housing 21 flows through the valve cavity 13 of the dehumidification breathable valve 1 and is discharged to the outside of the electronic component 2 through the breathable membrane 14, the water absorption module 15 arranged in the valve cavity 13 absorbs moisture in the gas.

[0045] At the same time, the second humidity sensor arranged in the shell 21 of the electronic component 2 collects the second humidity value in the shell 21 at a set frequency, for example, once every 5 seconds, and sends the collected second humidity value to the control module; and the first humidity sensor arranged in the valve cavity 13 of the dehumidification and ventilation valve 1 also collects the first humidity value in the valve cavity 13 at a set frequency, and sends the collected first humidity value to the control module.

[0046] The control module compares the acquired second humidity value and the first humidity value with the preset humidity threshold values, and determines whether to power the heating module 16 through the circuit board 22 according to the comparison result, and starts the heating module 16 to heat the water absorption module 15. The humidity threshold value compared with the second humidity value and the humidity threshold value compared with the first humidity value can be set to be the same or different, as well as the specific humidity value, as needed.

[0047] When the second humidity value in the housing 21 is greater than the set humidity threshold, and the first humidity value in the valve cavity 13 is also greater than the set humidity threshold; the control module determines that the humidity in the housing 21 exceeds the standard, and the water absorption capacity of the water absorption module 15 in the valve cavity 13 has been saturated. At this time, the control module will supply power to the heating module 16 through the circuit board 22, start the heating module 16 to heat the water absorption module 15, so that the water in the water absorption module 15 evaporates and passes through the breathable membrane 14 to the outside of the electronic component 2. At the same time, the water absorption module 15 continues to absorb the water in the gas transmitted from the housing 21 of the electronic component 2, and evaporates the water in the water absorption module 15 under the heating of the heating module 16.

[0048] The heating module 16 continues to heat the water absorption module 15 until the second humidity value in the shell 21 is less than the set humidity threshold, and the first humidity value in the valve chamber 13 is also less than the set humidity threshold. The control module determines that the humidity in the shell 21 meets the standard, and stops supplying power to the heating module 16 through the circuit board 22, and the heating module 16 stops heating the water absorption module 15.

[0049] When the control module again determines that the second humidity value in the shell 21 is greater than the set humidity threshold, and the first humidity value in the valve chamber 13 is also greater than the set humidity threshold, the above dehumidification process is repeated to ensure that no condensation water is generated in the shell 21 to damage the electronic components 2.

[0050] When the second humidity value in the housing 21 is greater than the set humidity threshold, and the first humidity value in the valve cavity 13 is less than the set humidity threshold; the control module determines that the humidity in the housing 21 exceeds the standard, but the water absorption capacity of the water absorption module 15 in the valve cavity 13 is not saturated, and it can still absorb moisture in the gas flowing through the water absorption module 15. In this case, one processing method is that the control module does not supply power to the heating module 16 through the circuit board 22; until the first humidity value in the valve cavity 13 is also greater than the set humidity threshold, the control module supplies power to the heating module 16 through the circuit board 22, and starts the heating module 16 to heat the water absorption module 15. Another processing method is that even if the first humidity value in the cavity 13 is less than the set humidity threshold at this time, for the sake of safety, the heating module 16 is immediately supplied with power through the circuit board 22, and the heating module 16 is started to heat the water absorption module 15 until the second humidity value in the housing 21 is less than the set humidity threshold, and the first humidity value in the valve cavity 13 is also less than the set humidity threshold.

[0051] When the control module again determines that the second humidity value in the shell 21 is greater than the set humidity threshold and the first humidity value in the valve chamber 13 is less than the set humidity threshold, the above dehumidification process is repeated to ensure that no condensation water is generated in the shell 21 to damage the electronic components 2.

[0052] An embodiment of the present application further provides a vehicle, which includes the electronic component 2 as described above.

[0053] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A dehumidification and ventilation valve, comprising a valve seat and a valve cover, wherein the valve seat and the valve cover are connected in a detachable manner, characterized in that: The valve seat is provided with a valve cavity penetrating the valve seat; The opening end of the valve cavity adjacent to the valve cover is provided with a breathable membrane; A water absorption module and a heating module are arranged in the valve cavity; The heating module is arranged at the bottom of the valve cavity; The water absorption module is arranged between the breathable membrane and the heating module.

2. The dehumidification breathable valve according to claim 1, characterized in that: A first humidity sensor is arranged in the valve cavity for collecting a first humidity value in the valve cavity.

3. The dehumidification and ventilation valve according to claim 2, characterized in that: The valve seat comprises a bottom plate and a side wall arranged on the bottom plate and extending toward the valve cover; The bottom plate is provided with a through hole, and the bottom plate and the side wall form the valve cavity.

4. The dehumidification breathable valve according to claim 3, characterized in that: It also includes a heat insulation layer, which is arranged between the heating module and the bottom plate.

5. The dehumidification breathable valve according to claim 3, characterized in that: The heating module is arranged in close contact with the water absorption module; A limiting structure is arranged on the inner wall of the side wall of the valve seat, and the heating module and the water absorption module which are in contact with each other are arranged in the limiting structure in a detachable manner.

6. The dehumidification breathable valve according to claim 3, characterized in that: A connecting portion is provided at the bottom of the valve seat, and the connecting portion extends in a direction away from the bottom plate of the valve seat; The connection portion is sleeved with a sealing component at the connection between the connection portion and the bottom of the valve seat.

7. An electronic component, characterized in that: include: A housing, wherein a mounting hole is provided on a surface of the housing; The dehumidification and ventilation valve according to any one of claims 2 to 6, wherein the dehumidification and ventilation valve is arranged in the mounting hole; A circuit board, wherein the circuit board is arranged in the housing; A connector, wherein the connector is respectively connected to the heating module of the dehumidification and ventilation valve and the circuit board.

8. The electronic component according to claim 7, characterized in that A second humidity sensor is also included, which is used to collect a second humidity value in the shell.

9. The electronic component according to claim 8, characterized in that Also includes a control module, The control module is connected to the first humidity sensor and the second humidity sensor respectively to obtain the first humidity value and the second humidity value; and The control module is connected to the circuit board, and controls the operation of the heating module through the circuit board according to the acquired first humidity value and the second humidity value.

10. A vehicle, characterized in that: The electronic component comprises the electronic component as claimed in any one of claims 7 to 9.

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