Case and power electronic equipment

Abstract

The utility model discloses a case and power electronic equipment. The case comprises a case body, a ventilation valve and a water absorption assembly. The box body is provided with an accommodating space, the accommodating space is used for accommodating electronic devices, and the types of the electronic devices include but not limited to power devices, semiconductors, transistors and the like; the ventilation valve is arranged on the box wall of the box body and provided with a ventilation channel communicating the containing space with the outside, and the ventilation channel is used for balancing the internal and external pressure difference of the box body. The water absorption assembly is arranged in the containing space and used for absorbing moisture in the containing space so as to reduce the humidity in the containing space. According to the case disclosed by the invention, the pressure balance inside and outside the case is ensured through the ventilation valve, and the moisture in the accommodating space is effectively adsorbed and removed through the water absorption assembly, so that the drying degree in the accommodating space is ensured under the condition of bidirectional ventilation of the case, the influence of moisture on electronic devices in the case is reduced, and the service life of the case is prolonged. And the normal operation and the service life of electronic devices are ensured.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and more specifically, to a chassis and power electronic equipment. Background Technology

[0002] Currently, power electronic devices are typically equipped with vent valves to balance the air pressure inside and outside the chassis. However, because vent valves cannot completely prevent water vapor from entering, condensation often occurs inside the chassis due to moisture in the air, leading to device failure.

[0003] Therefore, how to effectively reduce the risk of damage to internal components of power electronic devices due to moisture has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a chassis to reduce the risk of damage to internal components of power electronic devices due to moisture.

[0005] Another object of this application is to provide a power electronic device including the aforementioned chassis.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A chassis, comprising:

[0008] The enclosure has a space for accommodating electronic components;

[0009] A vent valve is installed on the wall of the enclosure and has a vent channel connecting the containment space with the outside.

[0010] A water-absorbing component is disposed within the receiving space and absorbs the moisture within the receiving space.

[0011] Optionally, in the aforementioned chassis, the water-absorbing component includes a water-absorbing membrane disposed within the receiving space and adsorbing moisture within the receiving space.

[0012] Optionally, in the aforementioned chassis, the water-absorbing component further includes a first waterproof and breathable membrane, which covers the water-absorbing membrane and allows water vapor to pass through while intercepting liquid water.

[0013] Optionally, in the aforementioned chassis, the first waterproof and breathable membrane is disposed on the inner wall of the chassis, and the absorbent membrane is disposed between the first waterproof and breathable membrane and the inner wall of the chassis.

[0014] Optionally, in the aforementioned chassis, the first waterproof and breathable membrane is disposed at one end of the breathable channel located within the accommodating space, and the absorbent membrane is disposed between the breathable channel and the first waterproof and breathable membrane.

[0015] Optionally, in the aforementioned chassis, the first waterproof and breathable membrane is snap-fitted, screwed, or injection-molded to the breathable valve.

[0016] Optionally, in the aforementioned chassis, when the humidity in the containment space is less than the humidity of the water-absorbing component, the water-absorbing component releases moisture into the containment space and discharges moisture to the outside through the vent valve.

[0017] Optionally, in the aforementioned chassis, an elastic valve plate is provided in the ventilation channel;

[0018] When the pressure difference across the elastic valve plate is less than or equal to the preset pressure, the elastic valve plate blocks the air passage.

[0019] When the pressure difference across the elastic valve plate is greater than the preset pressure, the elastic valve plate deforms and connects the venting channel to the containment space and the outside.

[0020] Optionally, in the aforementioned chassis, at least one of a second waterproof and breathable membrane and an adsorption and purification layer is provided in the ventilation channel. The second waterproof and breathable membrane allows water vapor to pass through and intercepts liquid water, while the adsorption and purification layer adsorbs impurities and moisture.

[0021] A power electronic device includes electronic components and the aforementioned chassis, wherein the electronic components are disposed within the housing space.

[0022] The chassis provided in this application includes a housing, a vent valve, and a water absorption assembly. The housing has a storage space for accommodating electronic components, including but not limited to power devices, semiconductors, and transistors. The vent valve is located on the housing wall and has a venting channel connecting the storage space to the outside environment, which balances the pressure difference between the inside and outside of the housing. The water absorption assembly is located within the storage space and is used to absorb moisture within the space to reduce humidity. The venting channel typically contains absorbent material to prevent external moisture, dust, and other contaminants from entering the storage space. The water absorption assembly directly absorbs moisture within the storage space to reduce the humidity to the desired level.

[0023] Compared to related technologies, the chassis provided in this application uses a venting valve to ensure pressure balance inside and outside the chassis, and a water absorption component to effectively absorb and remove moisture in the containment space. This ensures the dryness of the containment space while the chassis is ventilated in both directions, reduces the impact of moisture on the electronic components inside the chassis, and ensures the normal operation and service life of the electronic components.

[0024] The power electronic equipment provided in this application includes electronic components and the aforementioned chassis. The electronic components are housed within the housing space. Since it includes the aforementioned chassis, it also possesses the aforementioned structure and beneficial effects, which will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the external structure of the power electronic device disclosed in the embodiments of this application;

[0027] Figure 2 This is a schematic diagram of the internal structure of the power electronic device disclosed in the embodiments of this application;

[0028] Figure 3 This is a partial structural schematic diagram of the power electronic equipment disclosed in the embodiments of this application;

[0029] Figure 4 This is a schematic diagram of the water-absorbing component disclosed in the embodiments of this application;

[0030] Figure 5 This is a schematic diagram of the external structure of the vent valve disclosed in the embodiments of this application;

[0031] Figure 6 This is a schematic diagram of the internal structure of the vent valve disclosed in the embodiments of this application. Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the internal structure of the vent valve disclosed in the embodiments of this application. Figure 2 .

[0033] Among them, 100 is the box body, and 101 is the storage space;

[0034] 200 is the vent valve, 201 is the vent channel, 202 is the vent gap, 210 is the valve body, 220 is the end cap, 230 is the second waterproof and breathable membrane, 231 is the adsorption and purification layer, and 240 is the elastic valve plate.

[0035] 300 is the water-absorbing component, 310 is the water-absorbing membrane, and 320 is the first waterproof and breathable membrane;

[0036] 400 refers to electronic devices. Detailed Implementation

[0037] The core of this application is to disclose a chassis that reduces the risk of damage to internal components of power electronic devices due to moisture.

[0038] Another key aspect of this application is the disclosure of a power electronic device including the aforementioned chassis.

[0039] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the utility model as described in the claims. It should be noted that, for ease of description, only the parts relevant to the utility model are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0040] Combination Figures 1-3 The chassis disclosed in this application includes a housing 100, a vent valve 200, and a water absorption assembly 300. The housing 100 has a receiving space 101 for accommodating electronic devices 400, including but not limited to power devices, semiconductors, and transistors. The vent valve 200 is located on the wall of the housing 100 and has a venting channel 201 connecting the receiving space 101 to the outside environment. The venting channel 201 is used to balance the pressure difference between the inside and outside of the housing 100. The water absorption assembly 300 is located within the receiving space 101 and is used to absorb moisture within the receiving space 101 to reduce the humidity. The venting channel 201 typically contains absorbent material to prevent external moisture, dust, and other contaminants from entering the receiving space 101 of the chassis. The water absorption assembly 300 directly absorbs moisture within the receiving space 101 of the chassis to reduce the humidity within the receiving space 101 to the desired level.

[0041] Compared to related technologies, the chassis disclosed in this application uses a vent valve 200 to ensure pressure balance inside and outside the chassis and a water absorption component 300 to effectively absorb and remove moisture in the containment space 101. This ensures the dryness of the containment space 101 while allowing for bidirectional ventilation of the chassis, reducing the impact of moisture on the electronic components 400 inside the chassis and ensuring the normal operation and service life of the electronic components 400.

[0042] It should be noted that the water-absorbing component 300 typically possesses the following characteristics: it actively absorbs moisture when the humidity of its surrounding environment (i.e., the humidity of the containing space 101) is greater than its own humidity, and actively releases moisture when the humidity is lower than the humidity of its surrounding environment (i.e., the humidity of the containing space 101). Here, "moisture absorption" refers to absorbing water, and "moisture release" refers to releasing water. Therefore, to further optimize the design, the water-absorbing component 300 can be made from recyclable, highly absorbent materials to quickly absorb and retain large amounts of moisture, while rapidly restoring its absorbent capacity after releasing the absorbed moisture, enabling multiple reuses, saving resources, and reducing environmental pollution. Specifically, the types of absorbent materials mentioned above include, but are not limited to, superabsorbent resin, silicone, and sponge materials. These absorbent materials can actively release the absorbed moisture and restore their absorbency when the humidity of their environment decreases. That is, when the humidity in the containing space 101 is less than the humidity of the absorbent component 300, the absorbent component 300 can release moisture into the containing space 101 and release moisture to the outside through the vent valve 200. Specifically, when the humidity in the containing space 101 is less than the humidity of the absorbent component 300, the absorbent component 300 first actively releases moisture into the containing space 101. If the vent channel 201 of the vent valve 200 is open at this time, and the pressure inside the containing space 101 is greater than the external pressure, an airflow can be formed from inside the containing space 101 to the outside, thereby releasing moisture to the outside.

[0043] In the embodiments disclosed in this application, since the water-absorbing component 300 is disposed inside the housing space 101, the water-absorbing material can directly utilize the heat generated by the electronic device 400 inside the chassis during operation as the energy for regeneration, realizing the cycle of moisture absorption and release of the water-absorbing component 300. That is, when the electronic device 400 operates, the heat released can raise the temperature and pressure inside the housing space 101 until the opening conditions of the vent valve 200 are met, the vent channel 201 opens and discharges the high-humidity gas to the outside. When the vent valve 200 is open and moisture is released to the outside, if the humidity inside the housing space 101 is less than the humidity of the water-absorbing component 300, the water absorbed by the water-absorbing component 300 is evaporated and can flow to the outside through the vent channel 201, thereby reducing the humidity inside the housing space 101 and reducing the risk of damage to the devices inside the housing space 101 due to moisture. The conditions under which the vent valve 200 opens and releases moisture to the outside can be set according to actual conditions. For example, it can be set to a pressure difference between the containment space 101 and the outside that is greater than a preset pressure, or a temperature in the containment space 101 that rises to a preset temperature, etc. The embodiments of this application do not limit this.

[0044] In a specific embodiment disclosed in this application, combined with Figure 4The water-absorbing component 300 includes a water-absorbing membrane 310, which is made of the aforementioned water-absorbing material and can absorb moisture within the containing space 101. Specifically, when the vent valve 200 is open and releases moisture to the outside, if the humidity within the containing space 101 is lower than the humidity of the water-absorbing component 300, the moisture absorbed by the water-absorbing membrane 310 evaporates and flows to the outside through the vent channel 201. For example, taking the opening condition of the vent valve 200 as the temperature inside the containment space 101 rising above a preset temperature as an example, when the electronic device 400 is off or running at a low power, the electronic device 400 releases less heat, and the temperature inside the containment space 101 remains below or equal to the preset temperature. At this time, the vent valve 200 is closed, and the absorbent membrane 310 normally absorbs the moisture inside the containment space 101. When the electronic device 400 is running at a high power, the heat it releases will cause the temperature and pressure inside the containment space 101 to rise until the temperature rises above the preset temperature. At this time, the vent valve 200 opens to release moisture to the outside, and the humidity inside the containment space 101 decreases. When the humidity decreases to a level lower than that of the absorbent membrane 310, the moisture absorbed by the absorbent membrane 310 is evaporated and can flow to the outside through the vent channel 201, thereby reducing the water content inside the containment space 101. In this embodiment, the absorbent material of the membrane structure has an absorbent area that is in full contact with the moisture in the containing space 101, as well as a release area for moisture release, which can greatly improve its absorbency and renewability. Specifically, the absorbent membrane 310 can be attached to the inner wall of the box 100 by means of adhesive backing or other methods.

[0045] Further optimize the plan, combined with Figure 4 The water-absorbing component 300 also includes a first waterproof and breathable membrane 320, which covers the water-absorbing membrane 310. Water vapor in the containment space 101 can pass through the first waterproof and breathable membrane 320 normally, but liquid water will be blocked by the first waterproof and breathable membrane 320 and cannot pass through. The first waterproof and breathable membrane 320 is used to prevent liquid water from affecting the electronic components 400 inside the chassis. When the humidity inside the chassis 100 exceeds the humidity of the water-absorbing membrane 310, water vapor in the air can pass through the first waterproof and breathable membrane 320 and be absorbed by the water-absorbing membrane 310, reducing the humidity inside the containment space 101. When the temperature and pressure inside the containment space 101 rise and release moisture to the outside until the humidity inside the containment space 101 is less than the humidity of the water-absorbing membrane 310, the water absorbed by the water-absorbing membrane 310 evaporates into water vapor and passes through the first waterproof and breathable membrane 320. Finally, it is released to the outside along with the high-pressure air inside the containment space 101, reducing the water content inside the containment space 101.

[0046] In some embodiments, combined with Figure 2 and Figure 3A first waterproof and breathable membrane 320 is disposed on the inner wall of the housing 100, and a water-absorbing membrane 310 is disposed between the first waterproof and breathable membrane 320 and the inner wall of the housing 100. In this embodiment, the inner wall of the housing 100 has sufficient space for the first waterproof and breathable membrane 320 and the water-absorbing membrane 310 to be arranged and spread out, so as to ensure their effective adsorption of moisture in the containment space 101, thereby ensuring the normal operation and service life of the electronic device 400.

[0047] In other embodiments, combined with Figure 3 The first waterproof and breathable membrane 320 is disposed at one end of the breathable channel 201 within the containing space 101. The absorbent membrane 310 is disposed between the breathable channel 201 and the first waterproof and breathable membrane 320. That is, the absorbent membrane 310 is arranged on the air intake path from the breathable channel 201 to the containing space 101. During the process of external airflow entering the containing space 101 through the breathable channel 201, it needs to pass through the absorbent membrane 310 and have its moisture absorbed by the absorbent membrane 310, thereby effectively preventing moisture from entering the containing space 101 and ensuring the dryness of the containing space 101. When the temperature and pressure inside the containing space 101 increase, the high-temperature airflow flows from the containing space 101 to the outside. When it passes through the absorbent membrane 310, it can carry away some of the water vapor adsorbed on the absorbent membrane 310 and reduce the water content of the absorbent membrane 310, thereby regenerating the absorbent membrane 310, ensuring the utilization rate of the absorbent membrane 310, and reducing the water content of the containing space 101.

[0048] Specifically, the first waterproof and breathable membrane 320 and the breathable valve 200 can be connected by snap-fit, screw-fit, or direct injection molding, offering flexible assembly options. Figure 2 and Figure 5 The vent valve 200 and the housing 100 can be connected by detachable means such as threads or clips, which facilitates disassembly and maintenance.

[0049] In some embodiments, the vent valve 200 is a micro-pressure bidirectional vent valve, and the opening pressure difference of the micro-pressure bidirectional vent valve is set to K. That is, when the pressure difference between the inside and outside of the housing 100 is lower than the preset pressure K, the vent valve 200 is closed, and airflow cannot flow into or out of the housing 100 through the vent channel 201. When the electronic device 400 inside the housing 100 is working, the heat generated causes the air pressure to rise to a level where the pressure difference between the containment space 101 and the outside is greater than K, the vent valve 200 opens, and the air inside the housing 100 flows to the outside. When the electronic device 400 inside the housing 100 stops working or its power decreases, the temperature inside the housing 100 decreases, a negative pressure is formed in the containment space 101, the vent valve 200 closes, and the containment space 101 remains closed until the pressure difference between the outside and the containment space 101 is greater than the preset pressure K, at which point external air enters the housing 100. The opening mechanism of the micro-pressure bidirectional vent valve can effectively reduce the entry of external dust, moisture, pollutants, etc. into the containment space 101, thereby reducing damage to electronic components 400.

[0050] For example, in combination Figure 6 and Figure 7 In some embodiments, an elastic valve plate 240 is provided within the ventilation channel 201. When the pressure difference across the elastic valve plate 240 is less than or equal to a preset pressure, the elastic valve plate 240 blocks the ventilation channel 201. When the pressure difference across the elastic valve plate 240 is greater than the preset pressure, the elastic valve plate 240 deforms, connecting the ventilation channel 201 to the accommodating space 101 and the outside. In this embodiment, when the electronic device 400 is off, the ventilation channel 201 can be kept closed, thereby effectively extending the service life of the electronic device 400. For example, the elastic valve plate 240 can adopt a multi-valve structure. When the valves are in their initial state, each valve can cooperate to block the ventilation channel 201. When the pressure difference across the ventilation channel 201 exceeds the preset pressure K, each valve deforms, and a through hole connecting the two sides of the ventilation channel 201 can be formed in the middle of each valve.

[0051] Combination Figure 7 In some embodiments, at least one of a second waterproof and breathable membrane 230 and an adsorption and purification layer 231 is provided within the ventilation channel 201. The second waterproof and breathable membrane 230 has the functions of preventing liquid water and allowing air to pass through, while the adsorption and purification layer 231 can adsorb impurities and moisture. When outside air enters the housing 100 through the ventilation channel 201, the second waterproof and breathable membrane 230 allows only gas to pass through and prevents liquids such as rainwater from passing through; the adsorption and purification layer 231 can adsorb impurities in the air, such as sulfur dioxide, nitrogen oxides, dust, and moisture, to ensure that only dry and clean air enters the housing 100, thereby ensuring the dryness and purity of the environment inside the housing 100 and reducing the risk of damage to the internal electronic components 400 of the power electronic equipment.

[0052] Specifically, the adsorption purification layer 231 may include structures with good adsorption performance, such as an adsorption purification mesh, adsorbent activated carbon, silica gel, and molecular sieves, which can adsorb impurities and moisture in the air. The adsorption purification mesh may be one or more layers, combined with... Figure 7 When the adsorption purification net is multi-layered, the ventilation holes on adjacent layers of adsorption purification net are staggered along the axial direction of the air permeable channel 201 to achieve maximum adsorption efficiency and enhance the adsorption and filtration effect on impurities and moisture in the air.

[0053] In addition, combined Figure 6 and Figure 7 The vent valve 200 includes a valve body 210 and an end cap 220. The valve body 210 is mounted on the housing 100 and has a vent channel 201. The end cap 220 is located at the end of the vent valve 200 outside the housing space 101 and has a vent gap 202 between it and the valve body 210. The vent gap 202 connects the vent channel 201 with the outside. The end cap 220 provides a certain degree of protection for the adsorbent material inside the vent channel 201.

[0054] The power electronic device disclosed in this application includes an electronic device 400 and the aforementioned chassis. The electronic device 400 is disposed within the accommodating space 101. Since it includes the aforementioned chassis, it also possesses the aforementioned structure and beneficial effects, which will not be repeated here.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cabinet, characterized in that, The application relates to a case (100) provided with a containing space (101) containing electronic devices (400), a gas-permeable valve (200) provided on a case wall of the case (100) and having a gas-permeable passage (201) communicating the containing space (101) with the outside, and a water-absorbing assembly (300) provided in the containing space (101) and absorbing moisture in the containing space (101). The water-absorbing assembly (300) comprises a water-absorbing film (310) provided in the containing space (101) and absorbing moisture in the containing space (101). The water-absorbing assembly (300) further comprises a first waterproof and gas-permeable film (320) covering the water-absorbing film (310), wherein the first waterproof and gas-permeable film (320) allows water vapor to pass through and intercepts liquid water. The first waterproof and gas-permeable film (320) is provided on an inner wall of the case (100), and the water-absorbing film (310) is arranged between the first waterproof and gas-permeable film (320) and the inner wall of the case (100).

2. The cabinet of claim 1, wherein, The first waterproof and gas-permeable film (320) is arranged at one end of the gas-permeable passage (201) in the containing space (101), and the water-absorbing film (310) is arranged between the gas-permeable passage (201) and the first waterproof and gas-permeable film (320).

3. The cabinet of claim 2, wherein, The first waterproof and gas-permeable film (320) is connected with the gas-permeable valve (200) through clamping, screwing or injection molding.

4. The cabinet of claim 3, wherein, When the humidity in the containing space (101) is lower than that of the water-absorbing assembly (300), the water-absorbing assembly (300) releases moisture into the containing space (101) and discharges moisture to the outside through the gas-permeable valve (200).

5. The enclosure of claim 3, wherein, The gas-permeable passage (201) is provided with an elastic valve sheet (240).

6. The cabinet of claim 5, wherein, When the pressure difference on both sides of the elastic valve sheet (240) is less than or equal to a preset pressure, the elastic valve sheet (240) blocks the gas-permeable passage (201).

7. The cabinet according to any of claims 1-6, characterized in that When the pressure difference on both sides of the elastic valve sheet (240) is greater than the preset pressure, the elastic valve sheet (240) deforms and makes the gas-permeable passage (201) communicate the containing space (101) with the outside.

8. The cabinet according to any one of claims 1 to 6, characterized in that The gas-permeable passage (201) is provided with at least one of a second waterproof and gas-permeable film (230) allowing water vapor to pass through and intercepting liquid water and an adsorbing and purifying layer (231) adsorbing impurities and moisture. The application further relates to electronic devices (400) provided in the containing space (101) and a case as claimed in any one of claims 1-9. ​ 9. The cabinet of any of claims 1-6, wherein, ​ 10. A power electronic device, characterized by ​

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