Environment-friendly cabinet

Abstract

The application relates to the technical field of environment-friendly cabinets, and discloses an environment-friendly cabinet which comprises a cabinet body and a cabinet door, the cabinet door is rotationally connected to the cabinet body, a plurality of placing grooves are formed in the cabinet body, supporting strips are arranged in the placing grooves, connecting plates are arranged on the supporting strips, heating plates are arranged on the connecting plates, connecting inclined surfaces are formed in the connecting plates, and the distance between the connecting inclined surfaces and the supporting strips gradually decreases in the vertically downward direction; when the heating plates are fixed on the connecting plates, the end of the heating plate away from the connecting plate is inclined in the direction away from the supporting strip, the heating plate is fixed on the connecting plate, the heating plate is inclined along the direction of the connecting inclined surface, the end of the heating plate away from the connecting plate is inclined in the direction away from the supporting strip, the heating plate can be inclined towards the groove wall away from the placing groove, the space between the heating plate and the wire can be increased, the wire can be clamped on the groove wall of the placing groove without abutting against the heating plate, and the possibility that the wire is damaged due to the direct contact between the heating plate and the wire is reduced.

Description

Technical Field

[0001] This application relates to the technical field of environmentally friendly cabinets, and in particular to an environmentally friendly cabinet. Background Technology

[0002] An environmental protection cabinet is an electrical device that connects power distribution lines. It is an important switching device for ring network power supply and terminal power supply. Environmental protection cabinets are widely used in industrial sites such as power plants and substations. Environmental protection cabinets are usually filled with insulating gas to prevent leakage inside the cabinet and further electrical risks.

[0003] In related technologies, the environmental protection cabinet includes a cabinet body and a cabinet door. The cabinet door is rotatably connected to the cabinet body. The cabinet body has multiple placement slots for placing electrical components. A heating plate is fixedly connected inside the placement slot to heat the placement slot and reduce condensation.

[0004] Since the placement tank usually contains multiple different electrical components, and there are many wires connecting these components, these wires are usually wrapped around the tank wall. This makes it very easy for the heating plate to come into contact with the wires during use, causing the heating plate to heat the wires and resulting in problems with the wires, thus affecting the use of the electrical components. Summary of the Invention

[0005] To address the issue of heating plates easily interfering with wires, this application provides an environmentally friendly cabinet.

[0006] This application provides an environmentally friendly cabinet, which adopts the following technical solution:

[0007] An eco-friendly cabinet includes a cabinet body and a cabinet door. The cabinet door is rotatably connected to the cabinet body. The cabinet body has multiple placement slots, and support bars are provided in the placement slots. A connecting plate is provided on the support bar, and a heating plate is provided on the connecting plate. A connecting slope is provided on the connecting plate, and the distance between the connecting slope and the support bar gradually decreases in the vertically downward direction. When the heating plate is fixed to the connecting plate, the end of the heating plate away from the connecting plate is inclined in the direction away from the support bar.

[0008] By adopting the above technical solution, the heating plate is fixed to the connecting plate and tilted along the direction of the connecting slope. This tilts the end of the heating plate away from the connecting plate away from the support bar, allowing the heating plate to tilt towards the side wall away from the placement groove. This increases the space between the heating plate and the wire, allowing the wire to be clamped to the groove wall of the placement groove without touching the heating plate, thus reducing the possibility of direct contact between the heating plate and the wire and causing damage to the wire.

[0009] Optionally, the cabinet has a receiving slot that connects to the placement slot. A heat insulation curtain is rotatably connected in the receiving slot. The placement slot has a driving structure, and the driving structure has a movable plate for sealing the receiving slot. When a fire occurs in the placement slot, the driving structure drives the movable plate to not seal the receiving slot, and the completely fallen heat insulation curtain is located between two adjacent placement slots.

[0010] By adopting the above technical solution, when the placement slot catches fire, the drive structure can move the moving plate so that the moving plate does not block the receiving slot, allowing the heat insulation curtain to fall from the opening of the receiving slot. This ensures that the heat insulation curtain is located between two adjacent placement slots, reducing the fire from breaking through the slot wall and reducing the impact of the fire on other parts of the cabinet, thereby reducing the impact of the fire on the environmental protection cabinet.

[0011] Optionally, the placement slot is equipped with a jetting structure containing a fire extinguishing agent, and the jetting structure is located on the moving path of the moving plate; when the jetting structure is squeezed, the jetting structure sprays out the fire extinguishing agent.

[0012] By adopting the above technical solution, the jet structure is located on the moving path of the moving plate, which allows the moving plate to squeeze the jet structure, thereby allowing the jet structure to release the extinguishing agent. The extinguishing agent can then extinguish the fire in the placement tank, allowing the burning items to be extinguished. This achieves automatic fire extinguishing inside the cabinet, reducing the possibility of the fire spreading further due to lack of firefighting.

[0013] Optionally, a rotating rod is rotatably connected inside the receiving groove, the heat insulation curtain is disposed on the rotating rod, a rotating gear is provided on the rotating rod, a movable rack is meshed on the rotating gear, and the jet structure is located on the moving path of the movable rack; when the heat insulation curtain is completely lowered, the movable rack squeezes the jet structure.

[0014] By adopting the above technical solution, when the heat insulation curtain falls, the heat insulation curtain can drive the rotating rod to rotate, and the rotating rod can drive the rotating gear to rotate. Since the rotating gear is meshed with the moving rack, and the jet structure is located on the moving path of the moving rack, the moving rack can squeeze the jet structure, allowing the jet structure to further release the extinguishing agent and reduce the possibility of residual extinguishing agent in the jet structure.

[0015] Optionally, the cabinet is provided with connecting pipes that connect to multiple jet structures; when one of the jet structures is compressed, the extinguishing agent in the other jet structures can move to the compressed jet structure through the connecting pipes.

[0016] By adopting the above technical solution, when one of the jet structures is compressed, multiple jet structures are connected through connecting pipes. The other jet structures are driven by air pressure to move the extinguishing agent, allowing the extinguishing agent to concentrate in the compressed jet structure. This ensures that the compressed jet structure contains the extinguishing agent. When the moving rack compresses the jet structure, the jet structure can still spray out the extinguishing agent, further increasing the possibility of the extinguishing agent extinguishing the fire. At the same time, through the movement of the extinguishing agent in other jet structures, the extinguishing agent can extinguish the fire, reducing the waste caused by long-term storage of the extinguishing agent.

[0017] Optionally, the cabinet is equipped with a fire extinguishing structure for spraying fire extinguishing gas. The fire extinguishing structure is equipped with a release pipe. The heat insulation curtain has multiple first openings distributed along the vertical direction of the cabinet. The heat insulation curtain has a flow channel connecting the first openings. When the heat insulation curtain is fully lowered, the release pipe connects to the flow channel. When the drive structure is activated and the temperature continues to rise, the fire extinguishing structure releases fire extinguishing gas, which is sprayed out from the first opening.

[0018] By adopting the above technical solution, when the driving structure is activated and the temperature continues to rise, the fire extinguishing structure is activated, allowing the fire extinguishing structure to spray fire extinguishing gas through the release pipe. Since the driving structure has been activated, the heat insulation curtain is completely lowered at this time, and the flow channel is connected to the release pipe, so that the fire extinguishing gas can be released sequentially through the release pipe, the flow channel and the first opening. In addition, multiple first openings are distributed along the vertical direction of the cabinet, so that the fire extinguishing gas can quickly fill the interior of the placement tank, allowing the fire extinguishing gas to stably control the fire and reduce the possibility of the fire spreading further.

[0019] Optionally, the first opening is provided with a release nozzle, the release nozzle has a perforation for the fire extinguishing gas to pass through, the perforation wall has a guide hole, the guide hole extends circumferentially along the perforation, and the diameter of the guide hole near the flow channel is larger than the diameter of the guide hole away from the flow channel.

[0020] By adopting the above technical solution, the extinguishing gas passes through the perforation. Since the guide hole extends circumferentially along the outlet, the extinguishing gas can rotate along the extension direction of the guide hole, allowing the extinguishing gas to rotate through the perforation and quickly reach the side of the placement tank away from the heat insulation curtain, thus quickly filling the placement tank. As the extinguishing gas moves within the guide hole, since the diameter of the guide hole near the flow channel is larger than the diameter of the guide hole away from the flow channel, the speed at which the extinguishing gas leaves the guide hole can be accelerated, thereby realizing the operation of quickly filling the placement tank with extinguishing gas.

[0021] Optionally, the heat insulation curtain is provided with a first magnet, and the wall of the receiving groove is provided with a second magnet; when the first magnet attracts the second magnet, the flow channel is connected to the release pipe.

[0022] By adopting the above technical solution, the first magnet attracts the second magnet, which in turn restricts the movement of the heat insulation curtain. At this time, the flow channel is connected to the release pipe, allowing the extinguishing gas to move from the release pipe into the flow channel, thus enabling the extinguishing gas to move stably.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By fixing the heating plate to the connecting plate, the heating plate is tilted along the direction of the connecting slope, so that the end of the heating plate away from the connecting plate is tilted away from the support bar. This allows the heating plate to face away from the side wall of the placement groove, increasing the space between the heating plate and the wire. This allows the wire to be clamped to the side wall of the placement groove without touching the heating plate, reducing the possibility of direct contact between the heating plate and the wire, which could damage the wire.

[0025] 2. When one of the jet structures is compressed, multiple jet structures connected by a connecting pipe allow the extinguishing agent in other jet structures to move due to air pressure, concentrating the extinguishing agent into the compressed jet structure. This ensures that the compressed jet structure contains the extinguishing agent. Even when the moving rack compresses the jet structure, it can still eject the extinguishing agent, further increasing the likelihood of the extinguishing agent extinguishing the fire. Simultaneously, the movement of the extinguishing agent in other jet structures allows the extinguishing agent to extinguish the fire, reducing the waste caused by long-term storage of the extinguishing agent. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of Example 1;

[0027] Figure 2 This is a schematic diagram of the structure highlighting the support strip in Embodiment 1;

[0028] Figure 3 This is an exploded view of the connecting ramp in Example 1;

[0029] Figure 4 This is a structural schematic diagram of Example 2;

[0030] Figure 5 along Figure 4 A partial sectional view of line AA in the middle;

[0031] Figure 6 This is a schematic diagram highlighting the rotating gear in Example 2;

[0032] Figure 7 yes Figure 5 Enlarged diagram of part B.

[0033] Reference numerals: 1. Cabinet body; 11. Cabinet door; 12. Placement slot; 13. Support bar; 131. Connecting plate; 132. Heating plate; 133. Fixing bolt; 134. Humidity sensor; 135. Connecting slope; 2. Receiving slot; 21. Rotating rod; 22. Heat insulation curtain; 221. Moving block; 222. Moving slot; 23. Drive structure; 231. Moving plate; 24. Rotating gear; 241. Moving rack; 242. Extrusion plate; 25. Flow channel; 251. First opening; 252. Release nozzle; 253. Perforation; 254. Guide hole; 26. First magnet; 261. Second magnet; 3. Jet structure; 31. Connecting hole; 32. Connecting pipe; 4. Fire extinguishing structure; 41. Release pipe. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0035] Example 1

[0036] This embodiment discloses an environmentally friendly cabinet. (Refer to...) Figure 1 and Figure 2 An environmentally friendly cabinet includes a cabinet body 1 and a cabinet door 11. The cabinet door 11 is rotatably connected to the cabinet body 1. The cabinet body 1 has multiple placement slots 12 for placing electrical components.

[0037] Reference Figure 2 and Figure 3 A support bar 13 is fixedly connected to the wall of the placement groove 12, and the support bar 13 extends vertically. A connecting plate 131 is fixedly connected to the support bar 13, and the connecting plate 131 extends horizontally, with a certain space between the connecting plate 131 and the wall of the placement groove 12. A heating plate 132 is provided on the surface of the connecting plate 131, and a fixing bolt 133 is provided on the heating plate 132, which passes through the heating plate 132 and is fixed to the connecting plate 131. A connecting inclined surface 135 is formed on the surface of the connecting plate 131 away from the support bar 13, and the distance between the connecting inclined surface 135 and the support bar 13 gradually decreases in the vertically downward direction.

[0038] Reference Figure 2 and Figure 3 When the heating plate 132 is fixed on the connecting plate 131, the end of the heating plate 132 away from the connecting plate 131 can be tilted away from the support bar 13, so that the distance between the heating plate 132 and the wall of the placement groove 12 is increased, thereby reducing the possibility of contact between the wires on the wall of the placement groove 12 and the heating plate 132.

[0039] Reference Figure 2 and Figure 3 A humidity sensor 134 is fixedly connected inside the placement tank 12. The humidity sensor 134 can detect the humidity inside the placement tank 12 and is electrically connected to the heating plate 132. When the humidity sensor 134 detects excessive humidity, it drives the heating plate 132 to start, so that the heating plate 132 heats the inside of the placement tank 12 to reduce condensation on the tank wall.

[0040] The implementation principle of Example 1 is as follows: the end of the heating plate 132 away from the connecting plate 131 can be tilted away from the support bar 13, thereby increasing the distance between the heating plate 132 and the wire.

[0041] Example 2

[0042] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the cabinet 1 has a receiving groove 2 that connects to the placement groove 12. A rotating rod 21 is rotatably connected inside the receiving groove 2, and the rotating rod 21 extends along the width direction of the cabinet 1. A heat insulation curtain 22 is fixedly connected to the outer surface of the rotating rod 21. The heat insulation curtain 22 is made of flexible material and is capable of heat insulation treatment.

[0043] Reference Figure 5 A movable block 221 is fixedly connected to the end face of the heat insulation curtain 22 away from the rotating rod 21. A movable groove 222 for the movable block 221 to be inserted is provided on the groove wall of the placement groove 12, and the movable groove 222 extends into the receiving groove 2. The movable groove 222 extends in the vertical direction.

[0044] Reference Figure 5 A drive structure 23 is provided inside the placement slot 12. The drive structure 23 includes a drive cylinder and a temperature sensor. The temperature sensor is fixedly connected to the placement slot 12 and electrically connected to the drive cylinder. The drive cylinder is fixedly connected to the wall of the placement slot 12. A moving plate 231 is fixedly connected to the drive shaft of the drive cylinder. The moving plate 231 is used to block the opening of the receiving slot 2. When the drive cylinder drives the moving plate 231, the receiving slot 2 is not blocked. The moving block 221 can move within the moving slot 222, allowing the heat insulation curtain 22 to fall smoothly and be positioned between two adjacent placement slots 12, thus preventing the heat insulation curtain 22 from spreading from the ignition point to other parts.

[0045] Reference Figure 5The placement tank 12 is equipped with a jet structure 3, which is made of an airbag and contains a fire extinguishing agent, specifically perfluorohexanone. The jet structure 3 is located on the moving path of the movable plate 231; that is, when the movable plate 231 is not blocking the receiving tank 2, it can compress the jet structure 3. When the jet structure 3 is compressed, it can spray out the fire extinguishing agent, allowing it to spread from the opening of the receiving tank 2 into the placement tank 12, thus extinguishing the fire at the location of the fire.

[0046] Reference Figure 5 The cabinet 1 has a connection hole 31 that connects to multiple placement slots 12. A connection pipe 32 is fixedly connected inside the connection hole 31, and the connection pipe 32 connects to multiple spray structures 3. When one spray structure 3 is compressed, the extinguishing agent in the other spray structures 3 is not consumed, resulting in a higher pressure of the extinguishing agent in the other spray structures 3. The extinguishing agent in the other spray structures 3 can move from the connection pipe 32 to the spray structure 3, so that the extinguishing agent in the spray structure 3 can be replenished, so that the spray structure 3 can continue to spray extinguishing agent.

[0047] Reference Figure 5 and Figure 6 A rotating gear 24 is fixedly connected to the outer surface of the rotating rod 21, and a movable rack 241 is slidably connected to the wall of the receiving groove 2, meshing with the rotating gear 24. A pressing plate 242 is fixedly connected to the surface of the movable rack 241, and the jetting structure 3 is located on the moving path of the pressing plate 242. When the heat insulation curtain 22 is completely lowered, the rotating rod 21 drives the movable rack 241 to move through the rotating gear 24, allowing the movable rack 241 to press the jetting structure 3, so that the extinguishing agent in the jetting structure 3 can be sprayed out again.

[0048] Reference Figure 5 and Figure 6 When a fire breaks out in the placement slot 12, the drive cylinder first moves the moving plate 231 to abut the jet structure 3. At this time, the heat insulation curtain 22 falls. While waiting for the heat insulation curtain 22 to fall completely, the extinguishing agent in other jet structures 3 can move into the jet structure 3. The heat insulation curtain 22 drives the moving rack 241 to squeeze the jet structure 3 by rotating the gear 24, so that the jet structure 3 can spray the extinguishing agent again.

[0049] Reference Figure 5 and Figure 6 The cabinet 1 is equipped with a fire extinguishing structure 4, which includes a fire extinguishing element electrically connected to a temperature sensor. The fire extinguishing element is fixedly connected to the cabinet 1, and multiple release pipes 41 are fixedly connected to the cabinet 1. The release pipes 41 are connected to the fire extinguishing element, meaning that the fire extinguishing element can release fire extinguishing gas in the release pipes 41. The fire extinguishing gas is carbon dioxide gas.

[0050] Reference Figure 6 When the temperature sensor first detects that the temperature is too high, it activates the drive cylinder to extinguish the fire once. If the fire is not extinguished and the temperature sensor detects that the temperature continues to rise, it activates the extinguishing device to release extinguishing gas for secondary fire extinguishing.

[0051] Reference Figure 6 and Figure 7 The heat insulation curtain 22 has flow channels 25 on its surface, which extend along the length of the heat insulation curtain 22. Multiple first openings 251 are also provided on the surface of the heat insulation curtain 22, each connecting to the flow channels 25, and are arranged in an array along the length of the heat insulation curtain 22. When the heat insulation curtain 22 is fully lowered, the flow channels 25 connect to the release pipe 41, allowing fire extinguishing gas to move from the release pipe 41 into the flow channels 25.

[0052] Reference Figure 5 , Figure 6 and Figure 7 The surface of the heat insulation curtain 22 has a groove, and a first magnet 26 is fixedly connected in the groove. A second magnet 261 is fixedly connected to the wall of the receiving groove 2, and the first magnet 26 attracts the second magnet 261. When the first magnet 26 attracts the second magnet 261, the heat insulation curtain 22 is fixed to the cabinet 1. At this time, the heat insulation curtain 22 is completely lowered, and the flow channel 25 is connected to the release pipe 41.

[0053] Reference Figure 7 A release nozzle 252 is fixedly connected within the first opening 251. The release nozzle 252 has a perforation 253 for the passage of extinguishing gas, and the perforation 253 connects to the first opening 251. A guide hole 254 is formed on the wall of the perforation 253, extending circumferentially along the perforation 253. The diameter of the guide hole 254 near the flow channel 25 is larger than the diameter away from the flow channel 25, allowing the extinguishing gas to be released from the release nozzle 252 along the extension direction of the guide hole 254. Furthermore, the extinguishing gas rotates as it is released from the release nozzle 252, increasing the distance it travels.

[0054] The implementation principle of Example 2 is as follows: When the place trough 12 catches fire, the temperature sensor detects that the temperature is too high. The temperature sensor starts the drive cylinder, which drives the moving plate 231 to move, so that the moving plate 231 does not block the accommodating trough 2 and the moving plate 231 abuts against the jet structure 3, so that the jet structure 3 sprays out the extinguishing agent. At this time, the heat insulation curtain 22 falls down.

[0055] If the fire in the placement tank 12 is still not extinguished, and the temperature sensor detects that the temperature is still rising, the temperature sensor will activate the fire extinguishing device, which will release fire extinguishing gas. The fire extinguishing gas will then spread into the placement tank 12 through the release pipe 41, the flow channel 25, the first opening 251 and the release nozzle 252, thereby reducing the possibility of the fire spreading further.

[0056] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. An environmentally friendly cabinet, comprising a cabinet body (1) and a cabinet door (11), wherein the cabinet door (11) is rotatably connected to the cabinet body (1), and the cabinet body (1) is provided with a plurality of placement slots (12), characterized in that: The placement groove (12) is provided with a support bar (13), the support bar (13) is provided with a connecting plate (131), the connecting plate (131) is provided with a heating plate (132), the connecting plate (131) is provided with a connecting inclined surface (135), the distance between the connecting inclined surface (135) and the support bar (13) gradually decreases in the vertically downward direction; when the heating plate (132) is fixed on the connecting plate (131), the end of the heating plate (132) away from the connecting plate (131) is inclined in the direction away from the support bar (13); The cabinet (1) has a receiving slot (2) that connects to the placement slot (12). A heat insulation curtain (22) is rotatably connected in the receiving slot (2). A driving structure (23) is provided in the placement slot (12). A moving plate (231) for sealing the receiving slot (2) is provided on the driving structure (23). When the placement slot (12) catches fire, the driving structure (23) drives the moving plate (231) to not seal the receiving slot (2), and the heat insulation curtain (22) falls completely between two adjacent placement slots (12). The placement slot (12) is provided with a jet structure (3), which contains a fire extinguishing agent. The jet structure (3) is located on the moving path of the moving plate (231). When the jet structure (3) is squeezed, the jet structure (3) sprays out the fire extinguishing agent. A rotating rod (21) is rotatably connected inside the receiving groove (2). The heat insulation curtain (22) is disposed on the rotating rod (21). A rotating gear (24) is provided on the rotating rod (21). A movable rack (241) is meshed on the rotating gear (24). The jet structure (3) is located on the moving path of the movable rack (241). When the heat insulation curtain (22) is completely lowered, the movable rack (241) squeezes the jet structure (3). A movable block (221) is fixedly connected to the end face of the heat insulation curtain (22) away from the rotating rod (21). A movable slot (222) for the movable block (221) to be inserted is provided on the wall of the placement slot (12). The movable slot (222) extends into the receiving slot (2). The movable slot (222) extends in the vertical direction. The driving structure (23) includes a driving cylinder. The driving cylinder drives the movable plate (231) to not block the receiving slot (2). The movable block (221) can move in the movable slot (222) so that the heat insulation curtain (22) can fall smoothly.

2. The environmentally friendly cabinet according to claim 1, characterized in that: The cabinet (1) is provided with a connecting pipe (32), which connects to multiple jet structures (3); when one of the jet structures (3) is compressed, the extinguishing agent in the other jet structures (3) can move to the compressed jet structure (3) through the connecting pipe (32).

3. The environmentally friendly cabinet according to claim 1, characterized in that: The cabinet (1) is provided with a fire extinguishing structure (4) for spraying fire extinguishing gas. The fire extinguishing structure (4) is provided with a release pipe (41). The heat insulation curtain (22) is provided with multiple first openings (251). The multiple first openings (251) are distributed along the vertical direction of the cabinet (1). The heat insulation curtain (22) is provided with a flow channel (25) connecting the first openings (251). When the heat insulation curtain (22) is completely lowered, the release pipe (41) connects to the flow channel (25). When the drive structure (23) is activated and the temperature continues to rise, the fire extinguishing structure (4) releases fire extinguishing gas, which is sprayed out from the first opening (251).

4. An environmentally friendly cabinet according to claim 3, characterized in that: The first opening (251) is provided with a release nozzle (252), and the release nozzle (252) is provided with a perforation (253) for the fire extinguishing gas to pass through. A guide hole (254) is provided on the wall of the perforation (253). The guide hole (254) extends circumferentially along the perforation (253). The diameter of the guide hole (254) near the flow channel (25) is larger than the diameter of the guide hole (254) away from the flow channel (25).

5. An environmentally friendly cabinet according to claim 3, characterized in that: The heat insulation curtain (22) is provided with a first magnet (26), and the groove wall of the receiving groove (2) is provided with a second magnet (261); when the first magnet (26) attracts the second magnet (261), the flow channel (25) is connected to the release pipe (41).

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