Power device

Abstract

The application discloses power equipment and belongs to the technical field of substation dehumidification. The power equipment comprises a box body forming a containing cavity, electronic devices installed in the containing cavity, a waterproof air-permeable valve installed on the box body and used for connecting the containing cavity and the outside world, a first blocking piece used for blocking the waterproof air-permeable valve, a dehumidifier installed in the containing cavity and communicated with a drain port arranged on the box body, a second blocking piece having a first position for blocking the drain port and a second position for opening the drain port, a driving mechanism connected with the second blocking piece and used for driving the second blocking piece to move between the first position and the second position, and wherein, when the first blocking piece blocks the waterproof air-permeable valve, the driving mechanism drives the first blocking piece to move to a position for opening the waterproof air-permeable valve when driving the second blocking piece to move from the first position to the second position. The application can reduce the condensation phenomenon in the containing cavity and reduce the risk of failure of the electronic devices caused by dampness.

Description

Technical Field

[0001] This application belongs to the field of substation dehumidification technology, and particularly relates to a power equipment. Background Technology

[0002] In high-humidity power plant scenarios, condensation easily occurs inside electrical equipment, affecting its lifespan and safety. Furthermore, during power plant development, electrical equipment may remain on-site for up to six months before grid connection, during which time it cannot draw power, and its built-in dehumidifiers are inoperable. Related technologies typically seal the drain and vent valves before shipment to temporarily address the condensation problem. However, upon grid connection, the equipment needs to connect to the outside environment to regulate the internal and external pressure difference. This requires manual unsealing, increasing maintenance difficulty and costs, indicating room for improvement. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes an electrical device that can reduce condensation within a containment cavity.

[0004] In a first aspect, this application provides an electrical device, comprising:

[0005] The box-like structure forms a receiving cavity;

[0006] Electronic devices are installed in the receiving cavity;

[0007] A waterproof and breathable valve is installed in the housing to connect the receiving cavity to the outside.

[0008] The first sealing element is used to seal the waterproof and breathable valve;

[0009] A dehumidifier is installed in the receiving cavity and is connected to the drain outlet provided on the housing;

[0010] The second sealing element has a first position that blocks the drain outlet and a second position that opens the drain outlet;

[0011] A drive mechanism, connected to the second sealing member, is used to drive the second sealing member to move between the first position and the second position; wherein...

[0012] When the first sealing member blocks the waterproof and breathable valve, the driving mechanism also drives the first sealing member to move to a position that opens the waterproof and breathable valve when it drives the second sealing member to move from the first position to the second position.

[0013] In the above technical solution, the first sealing member blocks the waterproof and breathable valve before the power equipment is connected to the grid, and the second sealing member can selectively block or open the drain outlet after the power equipment is connected to the grid. When the drain outlet is opened for the first time, the first sealing member is driven to move to the position where the waterproof and breathable valve is open. This can achieve controllable adjustment of condensate discharge, thereby reducing condensation in the containment cavity and reducing the risk of malfunction of the electronic components in the containment cavity due to moisture.

[0014] According to one embodiment of this application, the first sealing element includes:

[0015] The sealing part is installed outside the waterproof and breathable valve;

[0016] The connecting part is connected to the sealing part, and when the first sealing member blocks the waterproof and breathable valve, the connecting part is located on the movement path of the second sealing member from the first position to the second position.

[0017] In the above technical solution, when the second sealing member moves from the first position to the second position, it can drive the first sealing member to move to a position separated from the waterproof and breathable valve, thereby opening the waterproof and breathable valve.

[0018] According to one embodiment of this application, the thickness of the area of ​​the connecting portion that abuts against the second sealing member is greater than the thickness of other areas.

[0019] In the above technical solution, the connecting part can contact the second sealing member or be spaced apart from the second sealing member. When the thickness of the area of ​​the connecting part that abuts against the second sealing member is greater than the thickness of other areas, the connecting part can contact the second sealing member.

[0020] According to one embodiment of this application, when the first sealing member blocks the waterproof and breathable valve, the second sealing member is located at the first position, and the first sealing member abuts against the outside of the second sealing member.

[0021] In the above technical solution, the driving mechanism can directly drive the first sealing member to move to the position where the waterproof and breathable valve is opened by the second sealing member.

[0022] According to one embodiment of this application, when the first sealing member blocks the waterproof and breathable valve, the drive mechanism is connected to the first sealing member via a transmission member.

[0023] In the above technical solution, the driving mechanism can indirectly drive the first sealing member to move to the position where the waterproof and breathable valve is opened through the transmission component.

[0024] According to one embodiment of this application, when the second sealing member is located in the second position, the first sealing member is separated from the waterproof and breathable valve and the housing.

[0025] In the above technical solution, the first sealing component is separated from the waterproof and breathable valve and the housing when the waterproof and breathable valve is open.

[0026] According to one embodiment of this application, when the second sealing member is located in the second position, the first sealing member is connected to the waterproof and breathable valve or the housing.

[0027] In the above technical solution, the first sealing component is still connected to the waterproof and breathable valve or the housing when the waterproof and breathable valve is open.

[0028] According to one embodiment of this application, the driving mechanism includes a driving rod for reciprocating along the normal of the wall surface where the drain outlet is located in the housing, and the second sealing member is mounted on the driving rod.

[0029] In the above technical solution, the second sealing member reciprocates along the normal of the wall where the drain outlet is located via the drive rod, thereby achieving multiple drainages.

[0030] According to one embodiment of this application, the dehumidifier is provided with a water storage chamber for containing condensate, and the water storage chamber is connected to the drain outlet.

[0031] According to one embodiment of this application, the dehumidifier includes:

[0032] Thermoelectric cooling element;

[0033] A heat dissipation unit is located on the side of the thermoelectric cooling element facing the electronic device;

[0034] A condensing unit is located on the side of the thermoelectric cooling plate facing the water storage chamber.

[0035] In the above technical solution, the dehumidifier can condense the water vapor in the containment cavity into liquid water through the thermoelectric cooling element and discharge it from the electrical equipment, thereby reducing the condensation phenomenon in the containment cavity.

[0036] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0037] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0038] Figure 1 This is one of the structural schematic diagrams of the power equipment provided in the embodiments of this application;

[0039] Figure 2 This is a second schematic diagram of the structure of the power equipment provided in the embodiments of this application;

[0040] Figure 3 yes Figure 2 Sectional view at point AA;

[0041] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0042] Figure 5 This is the third schematic diagram of the structure of the power equipment provided in the embodiments of this application;

[0043] Figure 6 This is the fourth structural schematic diagram of the power equipment provided in the embodiments of this application;

[0044] Figure 7 yes Figure 6 Sectional view at CC;

[0045] Figure 8 yes Figure 7 A magnified view of a section at point D.

[0046] Figure label:

[0047] Power equipment 1;

[0048] Box body 10, receiving cavity 110;

[0049] Electronic components 20, waterproof and breathable valve 30, first sealing component 40, sealing part 410, connecting part 420;

[0050] Dehumidifier 50, drain outlet 510, water storage chamber 520, thermoelectric cooling chip 530, heat dissipation unit 540, condensation unit 550, fan 560;

[0051] Second sealing component 60;

[0052] Drive mechanism 70, drive rod 710. Detailed Implementation

[0053] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0054] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes an electrical device that can reduce condensation within a cavity.

[0055] The following is for reference. Figures 1-7 Describes an electrical device 1 according to an embodiment of this application.

[0056] like Figure 1 As shown, the power equipment 1 includes: a housing 10, electronic components 20, a waterproof and breathable valve 30, a first sealing element 40, a dehumidifier 50, a second sealing element 60, and a drive mechanism 70. The housing 10 forms a receiving cavity 110. The electronic components 20 are installed in the receiving cavity 110. The waterproof and breathable valve 30 is installed in the housing 10 to connect the receiving cavity 110 to the outside. The first sealing element 40 is used to seal the waterproof and breathable valve 30. The dehumidifier 50 is installed in the receiving cavity 110 and communicates with the drain outlet 510 provided on the housing 10. The second sealing element 60 has a first position that seals the drain outlet 510 and a second position that opens the drain outlet 510. The drive mechanism 70 is connected to the second sealing element 60 and is used to drive the second sealing element 60 to move between the first position and the second position.

[0057] In this embodiment, the enclosure 10 of the power equipment 1 forms a receiving cavity 110, and electronic components 20 are installed inside the receiving cavity 110. The enclosure 10 is usually made of a weather-resistant material, such as stainless steel or engineering plastic, to protect the internal components from the influence of the external environment. At the same time, a waterproof and breathable valve 30 for connecting the receiving cavity 110 and the outside is installed on the enclosure 10, and a first sealing member 40 for sealing the waterproof and breathable valve 30. The first sealing member 40 is located in the external environment, which can isolate the receiving cavity 110 from the external environment and reduce the risk of damage to the electronic components 20 due to moisture before the power equipment 1 is connected to the grid.

[0058] The housing cavity 110 is also equipped with a dehumidifier 50. The dehumidifier 50 can be refrigerated by semiconductor. The dehumidifier 50 is mainly used to condense the water vapor in the housing cavity 110 into liquid water after the power equipment 1 is connected to the grid. At the same time, the dehumidifier 50 is connected to the drain outlet 510 provided on the housing 10, and the condensate can be discharged through the drain outlet 510, thereby reducing the humidity in the housing cavity 110. The drive mechanism 70 can be integrated with the dehumidifier 50 or it can be a separate module.

[0059] The second sealing member 60 has a first position that blocks the drain outlet 510 and a second position that opens the drain outlet 510, and the drive mechanism 70 is connected to the second sealing member 60 for driving the second sealing member 60 to move between the first position and the second position.

[0060] In actual operation, the waterproof and breathable valve 30 of the power equipment 1 before and after grid connection has different working states. Before the power equipment 1 is connected to the grid, the first sealing member 40 seals the waterproof and breathable valve 30, and the second sealing member 60 seals the drain outlet 510 at the first position. The first sealing member 40 and the second sealing member 60 together isolate the receiving cavity 110 from the outside world, forming a sealed environment inside the box 10.

[0061] After the power equipment 1 is connected to the grid, the drive mechanism 70 is energized. The energized drive mechanism 70 can drive the second sealing member 60 to reciprocate between the first position and the second position periodically. At the same time, the dehumidifier 50 starts to work. When the second sealing member 60 blocks the drain outlet 510 in the first position, the dehumidifier 50 stores the condensate it produces. When the second sealing member 60 opens the drain outlet 510 in the second position, the stored condensate flows out through the drain outlet 510. That is, after the second sealing member 60 blocks the drain outlet 510 in the first position for a certain period of time, the drive mechanism 70 drives the second sealing member 60 to move from the first position to the second position and resets after the condensate is drained.

[0062] Furthermore, when the first sealing member 40 seals the waterproof and breathable valve 30, the drive mechanism 70 also drives the first sealing member 40 to move to a position that opens the waterproof and breathable valve 30 when it drives the second sealing member 60 to move from the first position to the second position.

[0063] One end of the second sealing member 60 is located inside the receiving cavity 110 and is poweredly coupled to the driving mechanism 70. The other end of the second sealing member 60 is located in the external environment and is in contact with the side of the first sealing member 40 facing the waterproof and breathable valve 30. When the second sealing member 60 moves from the first position to the second position for the first time, the second sealing member 60 can push open the first sealing member 40 that is blocking the waterproof and breathable valve 30, thereby connecting the receiving cavity 110 and the outside world through the waterproof and breathable valve 30.

[0064] It should be noted that the power equipment 1 is mainly used in new energy photovoltaic energy storage, and the power equipment 1 can be connected to power generation equipment such as solar panels, but is not limited to that.

[0065] In high-humidity power plant scenarios, condensation easily occurs inside electrical equipment, affecting its lifespan and safety. Furthermore, during power plant development, electrical equipment may remain on-site for up to six months before grid connection, during which time it cannot draw power, and its built-in dehumidifiers are inoperable. Related technologies typically seal the drain and vent valves before shipment to temporarily address the condensation problem. However, upon grid connection, the equipment needs to connect to the outside environment to regulate the internal and external pressure difference. This requires manual unsealing, increasing maintenance difficulty and costs, indicating room for improvement.

[0066] This application provides a second sealing element 60 at the drain outlet 510 of the dehumidifier 50 of the power equipment 1. After the power equipment 1 is connected to the grid, the second sealing element 60 can block the drain outlet 510 at the first position and open the drain outlet 510 at the second position, thereby achieving controllable adjustment of condensate discharge, thereby reducing condensation in the receiving cavity 110 and reducing the risk of failure of electronic components 20 in the receiving cavity 110 due to moisture. At the same time, when the second sealing element 60 moves from the first position to the second position, it can also drive the first sealing element 40 to move to the position where the waterproof vent valve 30 is opened, thereby reducing manual operation and maintenance costs. The first sealing element 40 can block the waterproof vent valve 30 before the power equipment 1 is connected to the grid, solving the moisture problem before grid connection.

[0067] According to the power equipment 1 provided in the embodiments of this application, the first sealing member 40 seals the waterproof and breathable valve 30 before the power equipment 1 is connected to the grid, and the second sealing member 60 can selectively seal or open the drain outlet 510 after the power equipment 1 is connected to the grid. When the drain outlet 510 is opened for the first time, the first sealing member 40 is driven to move to the position where the waterproof and breathable valve 30 is open. This can achieve controllable adjustment of condensate discharge, thereby reducing condensation in the receiving cavity 110 and reducing the risk of electronic components 20 in the receiving cavity 110 malfunctioning due to moisture.

[0068] In some embodiments, such as Figure 2 and Figure 4 As shown, the first sealing member 40 includes a sealing part 410 and a connecting part 420, wherein the sealing part 410 covers the waterproof and breathable valve 30, the connecting part 420 is connected to the sealing part 410, and when the first sealing member 40 seals the waterproof and breathable valve 30, the connecting part 420 is located on the movement path of the second sealing member 60 from the first position to the second position.

[0069] In this embodiment, the waterproof and breathable valve 30 is disposed on the wall of the housing 10. At least a portion of the waterproof and breathable valve 30 is located outside the receiving cavity 110, and a first sealing member 40 is provided on the side of the waterproof and breathable valve 30 away from the receiving cavity 110. The first sealing member 40 includes a sealing part 410 and a connecting part 420, wherein the sealing part 410 covers the waterproof and breathable valve 30, the connecting part 420 is connected to the sealing part 410, and there is an overlapping area between the orthographic projection of the connecting part 420 along the normal direction of the wall where the waterproof and breathable valve 30 is located and the orthographic projection of the second sealing member 60 along the normal direction of the wall where the waterproof and breathable valve 30 is located.

[0070] Furthermore, when the first sealing member 40 blocks the waterproof and breathable valve 30, the connecting part 420 is located on the movement path of the second sealing member 60 from the first position to the second position. That is, the vertical distance between the connecting part 420 and the second sealing member 60 located in the first position is less than the vertical distance between the connecting part 420 and the second sealing member 60 located in the second position. When the second sealing member 60 moves from the first position to the second position, it can drive the first sealing member 40 to move to a position separated from the waterproof and breathable valve 30, thereby opening the waterproof and breathable valve 30.

[0071] It should be noted that the connecting part 420 is located on the movement path of the second sealing member 60 from the first position to the second position. The height of the waterproof and breathable valve 30 protruding from the wall of the housing 10 is different from the thickness of the second sealing member 60. The connecting part 420 of the first sealing member 40 is connected to the sealing part 410. The sealing part 410 covers the waterproof and breathable valve 30. When the thickness of the connecting part 420 is the same as the thickness of the sealing part 410, the connecting part 420 cannot contact the second sealing member 60. Only when the thickness of the area of ​​the connecting part 420 that abuts against the second sealing member 60 is greater than the thickness of other areas, the connecting part 420 abuts against the second sealing member 60.

[0072] The connecting portion 420 can contact the second sealing member 60 or be spaced apart from it. For example, when the sealing portion 410 of the first sealing member 40 and the connecting portion 420 have the same thickness, the connecting portion 420 is spaced apart from the second sealing member 60. When the thickness of a part of the connecting portion 420 is greater than the thickness of the sealing portion 410, the connecting portion 420 can abut against the second sealing member 60.

[0073] In some embodiments, such as Figure 4 As shown, when the connecting portion 420 abuts against the second sealing member 60, the thickness of the area of ​​the connecting portion 420 that abuts against the second sealing member 60 is greater than the thickness of other areas.

[0074] In this embodiment, the side of the sealing part 410 away from the waterproof and breathable valve 30 is flush with the side of the connecting part 420 away from the second sealing member 60. At the same time, the height of the waterproof and breathable valve 30 protruding from the wall of the housing 10 is different from the thickness of the second sealing member 60. When the sealing part 410 covers the waterproof and breathable valve 30 and the connecting part 420 abuts against the second sealing member 60, the thickness of the connecting part 420 and the sealing part 410 will inevitably be different, and the thickness of the connecting part 420 is greater than the thickness of the sealing part 410.

[0075] It should be noted that the connecting part 420 may only abut against the second sealing member 60 in a portion of its area. For example, the area of ​​the connecting part 420 away from the sealing part 410 may abut against the second sealing member 60, while the area of ​​the connecting part 420 close to the sealing part 410 may be spaced apart from the second sealing member 60. That is, the thickness of the area of ​​the connecting part 420 that does not abut against the second sealing member 60 is the same as the thickness of the sealing part 410, and the thickness of the area of ​​the connecting part 420 that abuts against the second sealing member 60 is greater than the thickness of other areas.

[0076] In some embodiments, when the drive mechanism 70 drives the second sealing member 60 to move from the first position to the second position, it also drives the first sealing member 40 to move to a position that opens the waterproof and breathable valve 30. There are various ways in which the drive mechanism 70 drives the first sealing member 40 to move to the position that opens the waterproof and breathable valve 30, including but not limited to:

[0077] Example 1: When the first sealing member 40 seals the waterproof and breathable valve 30, the second sealing member 60 is located in the first position, and the first sealing member 40 abuts against the outside of the second sealing member 60.

[0078] In this embodiment, the first sealing member 40 abuts against the outside of the second sealing member 60, and the driving mechanism 70 directly drives the first sealing member 40 to move to the position where the waterproof and breathable valve 30 is opened through the second sealing member 60.

[0079] like Figure 4 As shown, before the power equipment 1 is connected to the grid, the first sealing component 40 continuously seals the waterproof and breathable valve 30, and the second sealing component 60 is always in the first position, thereby sealing the internal environment of the enclosure 10 and reducing the risk of damage to the electronic components 20 due to moisture before the power equipment 1 is connected to the grid.

[0080] Furthermore, when the first sealing member 40 blocks the waterproof and breathable valve 30, the second sealing member 60 is located in the first position, and the connecting part 420 of the first sealing member 40 is located on the movement path of the second sealing member 60 from the first position to the second position. When the second sealing member 60 can move from the first position to the second position, it can drive the first sealing member 40 to move to the position that opens the waterproof and breathable valve 30. The first sealing member 40 can abut against the outside of the second sealing member 60 or be spaced apart from the second sealing member 60.

[0081] Example 2: When the first sealing member 40 seals the waterproof and breathable valve 30, the drive mechanism 70 is connected to the second sealing member 60 through the transmission member.

[0082] In this embodiment, the drive mechanism 70 indirectly drives the first sealing member 40 to move to the position where the waterproof and breathable valve 30 is opened via a transmission member.

[0083] Before the power equipment 1 is connected to the grid, the first sealing component 40 continuously seals the waterproof and breathable valve 30, and the second sealing component 60 is always in the first position, thereby sealing the internal environment of the enclosure 10 and reducing the risk of damage to the electronic components 20 due to moisture before the power equipment 1 is connected to the grid.

[0084] Furthermore, when the first sealing member 40 blocks the waterproof and breathable valve 30, the drive mechanism 70 is connected to the second sealing member 60 through the transmission member. The drive mechanism 70 can drive the second sealing member 60 to move from the first position to the second position while driving the second sealing member 60 to move to the position where the waterproof and breathable valve 30 is opened through the transmission member.

[0085] In some embodiments, the first sealing element 40 has various connection forms with the waterproof and breathable valve 30 and the housing 10, including but not limited to:

[0086] Example 1: When the second sealing element 60 is in the second position, the first sealing element 40 is separated from the waterproof and breathable valve 30 and the housing 10.

[0087] In this embodiment, when the second sealing member 60 is in the second position, the drive mechanism 70 drives the first sealing member 40 to move to the position where the waterproof and breathable valve 30 is open. At this position, the first sealing member 40 is separated from the waterproof and breathable valve 30 and the housing 10 and no longer makes contact.

[0088] like Figure 5 and Figure 7 As shown, after the power equipment 1 is connected to the grid, when the drive mechanism 70 drives the second sealing member 60 to move from the first position to the second position, it also drives the first sealing member 40 to move to the position that opens the waterproof vent valve 30. When the second sealing member 60 reaches the second position for the first time, the first sealing member 40 moves to separate from the waterproof vent valve 30 and the housing 10, thereby opening the waterproof vent valve 30.

[0089] Example 2: When the second sealing element 60 is in the second position, the first sealing element 40 is connected to the waterproof and breathable valve 30 or the housing 10.

[0090] In this embodiment, when the second sealing member 60 is in the second position, the drive mechanism 70 drives the first sealing member 40 to move to the position where the waterproof and breathable valve 30 is open. The first sealing member 40 is connected to the waterproof and breathable valve 30 or the housing 10 in this position, without affecting the normal operation of the waterproof and breathable valve 30.

[0091] For example, the first sealing element 40 can still be connected to the valve body of the waterproof and breathable valve 30, or the first sealing element 40 can be connected to the housing 10, simply by opening the waterproof and breathable valve 30.

[0092] In some embodiments, such as Figure 4 and Figure 7 As shown, the drive mechanism 70 includes a drive rod 710 for reciprocating along the normal of the wall surface where the drain outlet 510 is located in the housing 10, and a second sealing member 60 is mounted on the drive rod 710.

[0093] In this embodiment, the drive mechanism 70 is connected to the second sealing member 60 and is used to drive the second sealing member 60 to move between a first position and a second position. For example, if the drain outlet 510 is located on a wall of the housing 10, the drive mechanism 70 may include a drive rod 710 for reciprocating along the normal of the wall where the drain outlet 510 is located, and the second sealing member 60 is mounted on the drive rod 710, thereby driving the second sealing member 60 to reciprocate along the normal of the wall where the drain outlet 510 is located through the drive rod 710 to perform multiple drainage operations.

[0094] The second sealing component 60 and the drive rod 710 can be independent structures, and then integrated into a single assembly. Alternatively, the second sealing component 60 and the drive rod 710 can be a single unit.

[0095] In addition, the drive mechanism 70 includes, but is not limited to, electromagnetic, electric screw and other drive forms that can realize the reciprocating motion of the drive rod 710.

[0096] In some embodiments, such as Figure 4 and Figure 7 As shown, the dehumidifier 50 is provided with a water storage chamber 520 for containing condensate, and the water storage chamber 520 is connected to the drain outlet 510.

[0097] In this embodiment, the dehumidifier 50 may include a water storage chamber 520 for containing condensate, and a drain outlet 510 is provided on the wall of the housing 10 and is connected to the water storage chamber 520. After the power equipment 1 is connected to the grid, the dehumidifier 50 starts to work, condensing water vapor in the air in the housing chamber 110 into liquid water. The liquid water is stored in the water storage chamber 520 and flows out when the drain outlet 510 is open.

[0098] In some embodiments, such as Figure 4 and Figure 7 As shown, the dehumidifier 50 includes a thermoelectric cooling chip 530, a heat dissipation unit 540, and a condensation unit 550, wherein the heat dissipation unit 540 is located on the side of the thermoelectric cooling chip 530 facing the electronic device 20, and the condensation unit 550 is located on the side of the thermoelectric cooling chip 530 facing the water storage chamber 520.

[0099] In this embodiment, the dehumidifier 50 may include a thermoelectric cooler 530, a heat dissipation unit 540, and a condensation unit 550. The thermoelectric cooler 530 is a semiconductor. The heat dissipation unit 540 is located on the side of the thermoelectric cooler 530 facing the electronic device 20. The condensation unit 550 is located on the side of the thermoelectric cooler 530 facing the water storage chamber 520. Both the heat dissipation unit 540 and the condensation unit 550 are in contact with the thermoelectric cooler 530.

[0100] The dehumidifier 50 is also provided with a vent connecting the receiving cavity 110 and the water storage cavity 520. When the second sealing member 60 blocks the drain outlet 510 in the first position, the water storage cavity 520 is not connected to the outside. The air in the receiving cavity 110 flows through the vent to the condensing unit 550. The water vapor in the air is condensed into liquid water under the cooling effect of the condensing unit 550 and stored in the water storage cavity 520. When the second sealing member 60 opens the drain outlet 510 in the second position, the water storage cavity 520 is connected to the outside through the drain outlet 510, and the condensate in the water storage cavity 520 is discharged through the drain outlet 510.

[0101] In addition, both the heat dissipation unit 540 and the condensation unit 550 have fins on the side away from the thermoelectric cooling chip 530, which can increase the heat exchange area between the heat dissipation unit 540 and the air and the condensation unit 550 and the air, respectively, thereby improving the cooling efficiency of the condensation unit 550 and thus improving the dehumidification efficiency of the dehumidifier 50. At the same time, the heat dissipation unit 540 is also equipped with a fan 560 to accelerate airflow, thereby improving the heat dissipation efficiency of the dehumidifier 50.

[0102] It is understandable that the dehumidifier 50 can condense the water vapor in the receiving cavity 110 into liquid water through the thermoelectric cooling element 530 and discharge it to the electrical equipment 1, thereby reducing the condensation phenomenon in the receiving cavity 110.

[0103] The embodiments of this application will be described in detail below from three different stages.

[0104] I. Power equipment before grid connection.

[0105] In this embodiment, when the power equipment 1 is not connected to the grid, there is a period of hanging time. During this period, the first sealing component 40 seals the waterproof and breathable valve 30, and the second sealing component 60 seals the drain outlet 510 at the first position, so that the inside of the box 10 of the power equipment 1 remains sealed.

[0106] II. When power equipment 1 is connected to the grid.

[0107] In this embodiment, when the power equipment 1 is connected to the grid, each component in the power equipment 1 is just energized, and the dehumidifier 50 and drive mechanism 70 in the power equipment 1 start to work. During this period, the drive mechanism 70 drives the second sealing member 60 to move from the first position to the second position, and at the same time drives the first sealing member 40 to move to the position that opens the waterproof and breathable valve 30.

[0108] III. Power equipment 1 after grid connection.

[0109] In this embodiment, after the power equipment 1 is connected to the grid, the dehumidifier 50 and the drive mechanism 70 in the power equipment 1 continue to work. During this period, the drive mechanism 70 drives the second sealing member 60 to reciprocate between the first position and the second position, and the first sealing member 40 opens the waterproof and breathable valve 30.

[0110] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0111] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0112] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0113] In the description of this application, "multiple" means two or more.

[0114] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0115] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0116] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0117] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A power equipment (1), characterized in that, include: The box (10) forms a receiving cavity (110); Electronic device (20) is installed in the receiving cavity (110); A waterproof and breathable valve (30) is installed in the housing (10) to connect the receiving cavity (110) to the outside. The first sealing element (40) is used to seal the waterproof and breathable valve (30); A dehumidifier (50) is installed in the receiving cavity (110) and communicates with the drain outlet (510) provided on the box body (10); The second sealing element (60) has a first position that blocks the drain outlet (510) and a second position that opens the drain outlet (510); A drive mechanism (70), connected to the second sealing member (60), is used to drive the second sealing member (60) to move between the first position and the second position; wherein, The drive mechanism (70) also drives the first sealing member (40) to move to a position that opens the waterproof and breathable valve (30) when it drives the second sealing member (60) to move from the first position to the second position.

2. The power equipment (1) according to claim 1, characterized in that, The first sealing element (40) includes: The sealing part (410) is installed outside the waterproof and breathable valve (30); The connecting part (420) is connected to the sealing part (410), and when the first sealing member (40) seals the waterproof and breathable valve (30), the connecting part (420) is located on the movement path of the second sealing member (60) from the first position to the second position.

3. The power equipment (1) according to claim 2, characterized in that, The thickness of the area of ​​the connecting portion (420) that abuts against the second sealing member (60) is greater than the thickness of other areas.

4. The power equipment (1) according to claim 1, characterized in that, When the first sealing member (40) blocks the waterproof and breathable valve (30), the second sealing member (60) is located in the first position, and the first sealing member (40) abuts against the outside of the second sealing member (60).

5. The power equipment (1) according to claim 1, characterized in that, When the first sealing member (40) blocks the waterproof and breathable valve (30), the drive mechanism (70) is connected to the first sealing member (40) via a transmission member.

6. The power equipment (1) according to claim 1, characterized in that, When the second sealing element (60) is in the second position, the first sealing element (40) is separated from the waterproof and breathable valve (30) and the housing (10).

7. The power equipment (1) according to claim 1, characterized in that, When the second sealing element (60) is in the second position, the first sealing element (40) is connected to the waterproof and breathable valve (30) or the housing (10).

8. The power equipment (1) according to claim 1, characterized in that, The drive mechanism (70) includes a drive rod (710) for reciprocating along the normal of the wall surface where the drain outlet (510) is located in the housing (10), and the second sealing member (60) is mounted on the drive rod (710).

9. The power equipment (1) according to any one of claims 1-8, characterized in that, The dehumidifier (50) is provided with a water storage chamber (520) for containing condensate, and the water storage chamber (520) is connected to the drain outlet (510).

10. The power equipment (1) according to claim 9, characterized in that, The dehumidifier (50) includes: Thermoelectric cooling element (530); A heat dissipation unit (540) is located on the side of the thermoelectric cooling chip (530) facing the electronic device (20); A condensing unit (550) is located on the side of the thermoelectric cooling plate (530) facing the water storage chamber (520).

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