Door body assembly and storage equipment

Abstract

The invention discloses a door body assembly and storage equipment, and belongs to the field of refrigeration equipment. The door body assembly comprises a door body, a mounting bracket and a valve group, the mounting bracket is arranged on the door body, and forms a first channel for communicating a storage space of the storage equipment with the outside; the valve set is installed on the installation support and used for opening the first channel under the condition that the pressure intensity of the storage space is smaller than the pressure intensity of the outside. The mounting support and the valve bank are arranged on the door body, the mounting support forms the first channel connecting the storage space of the storage equipment and the outside, the valve bank is mounted on the mounting support to control the first channel to be opened and closed, and under the condition that the pressure intensity of the storage space is smaller than the pressure intensity of the outside, the storage space is in negative pressure; the valve group opens the first channel, external air is supplemented into the storage space under the action of pressure intensity, so that the air pressure inside and outside the storage space is balanced, and a user can conveniently open the door body assembly.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, and in particular relates to a door assembly and storage device. Background Technology

[0002] Storage devices such as refrigerators and freezers generally consist of a cabinet and a door. The inside of the storage device forms a storage compartment, and the door can be opened and closed relative to the storage compartment. In order to maintain a constant temperature inside the storage device and to reduce unnecessary energy consumption, a sealing edge is usually installed around the door. When the door is closed relative to the cabinet, the storage compartment forms a sealed space.

[0003] However, after the door is closed relative to the cabinet, a negative pressure is formed inside the storage room. When the user opens the door again, they need to overcome the additional pressure formed by the air pressure difference, making it inconvenient to open the door. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a door assembly and storage device that can balance the air pressure inside and outside the storage space, making it convenient for users to open the door assembly.

[0005] In a first aspect, this application provides a door assembly for use in storage devices, the door assembly comprising:

[0006] Door body;

[0007] The mounting bracket is installed on the door body, and the mounting bracket forms a first channel connecting the storage space of the storage device with the outside world;

[0008] A valve assembly, mounted on the mounting bracket, is used to open the first channel when the pressure in the storage space is lower than the external pressure.

[0009] According to the door assembly of this application, by setting a mounting bracket and a valve assembly on the door, the mounting bracket forms a first channel connecting the storage space of the storage device to the outside world, and the valve assembly is installed on the mounting bracket to control the opening and closing of the first channel. When the pressure in the storage space is less than the pressure in the outside world, the storage space is under negative pressure, the valve assembly opens the first channel, and the outside gas replenishes the storage space due to the pressure action, thereby balancing the air pressure inside and outside the storage space, making it convenient for the user to open the door assembly.

[0010] According to one embodiment of this application, the valve assembly includes:

[0011] The housing forms an installation cavity, which has a first inlet communicating with the outside and a first outlet communicating with the first channel. An adsorption element for absorbing moisture in the airflow is provided inside the installation cavity.

[0012] A valve body is disposed in the mounting cavity, the valve body dividing the mounting cavity into a first cavity and a second cavity, the first cavity having a first inlet and the second cavity having a first outlet, the valve body being used to open to connect the first channel when the pressure in the second cavity is less than the pressure in the first cavity.

[0013] According to one embodiment of this application, the valve body includes:

[0014] A valve seat is connected to the inner wall of the housing, forming a second channel. The second inlet of the second channel is connected to the first inlet of the mounting cavity, and the second outlet of the second channel is connected to the first outlet of the mounting cavity.

[0015] A valve tongue, mounted on the valve seat, divides the second channel into a first segment and a second segment, the first segment having a second inlet and the second segment having a second outlet, the valve tongue being used to open to connect the second inlet and the second outlet when the pressure in the second segment is less than the pressure in the first segment.

[0016] According to one embodiment of this application, the valve seat includes a vent, which is disposed between the first section and the second section. The valve tongue is movably disposed above the vent and on the side facing the second outlet. The outer diameter of the valve tongue is larger than the inner diameter of the vent to achieve unidirectional flow of airflow from the second inlet to the second outlet in the second channel.

[0017] According to one embodiment of this application, the first segment and the second segment are vertically distributed, the end of the first segment facing the first inlet forms the second inlet, the sidewall of the first segment and the second segment overlapping forms the vent, and the end of the second segment facing the first outlet forms the second outlet.

[0018] According to one embodiment of this application, the inner wall of the housing is provided with a first anti-fooling element, and the outer wall of the valve seat is provided with a second anti-fooling element adapted to the first anti-fooling element.

[0019] According to one embodiment of this application, the end of the first segment facing the first inlet is open to form the second inlet, and the end of the second segment facing the first outlet is provided with a first filter hole, which forms the second outlet.

[0020] According to one embodiment of this application, the housing includes:

[0021] The shell body has an open end, the valve body is disposed in the shell body, and the shell body is detachably connected to the mounting bracket;

[0022] A cover body, which is detachably connected to the open end of the shell body, and the cover body having the first outlet.

[0023] According to one embodiment of this application, a second filter hole is provided at the end of the shell body opposite to the open end, and the second filter hole forms the first inlet;

[0024] The cover has a third filter hole, which forms the first outlet.

[0025] According to one embodiment of this application, the inner wall of the mounting bracket is provided with a third anti-mistake element, and the outer wall of the housing is provided with a fourth anti-mistake element adapted to the third anti-mistake element.

[0026] According to one embodiment of this application, the inner wall of the housing is provided with at least one limiting protrusion, the limiting protrusion being adapted to limit the valve body along the axial direction of the housing.

[0027] According to one embodiment of this application, the door body includes an outer shell and an insulation layer disposed within the outer shell. The outer wall of the outer shell facing the outside has a first opening, and the inner wall of the outer shell facing the storage space has a second opening. The mounting bracket is disposed within the insulation layer and its two ends are respectively connected to the first opening and the second opening.

[0028] According to one embodiment of this application, the door assembly further includes a water collection box and a heating device. The heating device is disposed on the outer surface of the mounting bracket, and the water collection box is disposed on the inner wall of the door and communicates with the first channel. The water collection box is used to collect defrosting water.

[0029] According to one embodiment of this application, the door assembly further includes a support assembly and a sealing edge, the support assembly being disposed on the inner wall of the door body, and the sealing edge being disposed on the inner wall of the door body;

[0030] When the door is closed relative to the storage device, the sealing edge and the support assembly are both sandwiched between the door and the storage device. The compression height of the sealing edge is H1. When the door assembly is not equipped with the support assembly, the compression height of the sealing edge is H2, satisfying H2 > H1.

[0031] According to one embodiment of this application, the height of the support component protruding from the inner side of the door is less than the height of the sealing edge protruding from the inner wall of the door; the rigidity of the support component is greater than the height of the sealing edge.

[0032] According to one embodiment of this application, the support assembly includes a support portion and a buffer portion. The support portion is connected to the door body, and the buffer portion is disposed on the side of the support portion away from the door body. The buffer portion is adapted to abut against the box body.

[0033] Secondly, this application provides a storage device, which includes:

[0034] The box body forms a storage compartment;

[0035] As described in any of the above embodiments, the door assembly is closable and can be installed on the housing to close the storage compartment.

[0036] According to the storage device of this application, by setting a mounting bracket and a valve assembly on the door, the mounting bracket forms a first channel connecting the storage space of the storage device to the outside world, and the valve assembly is installed on the mounting bracket to control the opening and closing of the first channel. When the pressure in the storage space is less than the pressure in the outside world, the storage space is under negative pressure, the valve assembly opens the first channel, and the outside gas replenishes the storage space due to the pressure action, thereby balancing the air pressure inside and outside the storage space, making it convenient for the user to open the door assembly.

[0037] 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

[0038] 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:

[0039] Figure 1 This is a schematic diagram of the structure of the storage device provided in the embodiments of this application;

[0040] Figure 2 This is one of the structural schematic diagrams of the door assembly provided in the embodiments of this application;

[0041] Figure 3 This is the second structural schematic diagram of the door assembly provided in the embodiments of this application;

[0042] Figure 4 This is the third structural schematic diagram of the door assembly provided in the embodiments of this application;

[0043] Figure 5 This is the fourth structural schematic diagram of the door assembly provided in the embodiments of this application;

[0044] Figure 6 This is the fifth structural schematic diagram of the door assembly provided in the embodiments of this application;

[0045] Figure 7 This is the sixth structural schematic diagram of the door assembly provided in the embodiments of this application;

[0046] Figure 8 This is a schematic diagram of the valve assembly provided in the embodiments of this application;

[0047] Figure 9 This is one of the structural schematic diagrams of the valve body provided in the embodiments of this application;

[0048] Figure 10 This is the second schematic diagram of the valve body provided in the embodiments of this application;

[0049] Figure 11 This is a schematic diagram of the structure of the cover provided in the embodiment of this application;

[0050] Figure 12 This is the seventh structural schematic diagram of the door assembly provided in the embodiments of this application;

[0051] Figure 13 This is one of the structural schematic diagrams of the support components provided in the embodiments of this application;

[0052] Figure 14 This is the second structural schematic diagram of the support component provided in the embodiments of this application.

[0053] Figure label:

[0054] Door assembly 1, door 11, outer shell 111, insulation layer 112, mounting bracket 12, first channel 121, third anti-fooling component 122;

[0055] Valve assembly 13, housing 131, mounting cavity 1311, first inlet 1312, first outlet 1313, first cavity 1314, second cavity 1315, first anti-fooling component 1315, housing body 1316, cover 1317, limiting protrusion 1318;

[0056] Valve body 132, valve seat 1321, second anti-fooling component 13211, valve tongue 1322, second channel 1323, first section 13231, second section 13232, second inlet 13233, second outlet 13234, vent 13235;

[0057] Water receiving box 14, support assembly 15, support part 151, buffer part 152, sealing edge 16;

[0058] Box 2. Detailed Implementation

[0059] The embodiments of this application are described in detail below. Examples of the 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.

[0060] The following is for reference. Figures 1-14 This application describes a door assembly 1 and a storage device according to embodiments thereof.

[0061] It should be noted that the storage device in this embodiment can be understood as a refrigeration storage device in a broad sense, including but not limited to refrigerators, freezers, display cases, beverage cabinets, wine cabinets, refrigerated display cases, and refrigerated vending machines. The storage devices have diverse structural forms and a wide range of applications.

[0062] like Figure 1 As shown, the storage equipment includes a box body 2 and a door assembly 1. The box body 2 includes a shell, an inner liner, and an insulation layer 112 located between the shell and the inner liner. The shell is located outside the inner liner and serves a protective function. The insulation layer 112 can be a foam layer, which serves a heat preservation and cushioning function. A machine compartment is formed between the shell and the inner liner, which is used to house machines such as compressors and circuit breakers.

[0063] Door assembly 1 is located at the open end of box 2, box 2 forms a storage compartment, and door assembly 1 can be installed in a closable manner on box 2 to close the storage compartment.

[0064] This embodiment provides a door assembly 1, which is applied to storage devices such as refrigerators and freezers. It is particularly suitable for scenarios where the door assembly 1 needs to automatically balance the pressure when the external pressure is greater than the internal pressure of the storage device.

[0065] The storage device forms a storage compartment. When the door assembly 1 is opened, items can be taken out or placed into the storage compartment. In order to maintain a constant temperature inside the storage device and to reduce unnecessary energy consumption, a sealing edge 16 is usually provided around the door 11. It can be tightly attached to the cabinet 2 by magnetic attraction or other means to form a sealed space for the storage compartment.

[0066] However, after the door assembly 1 is closed relative to the box 2, the temperature inside the storage room decreases and the gas density increases. Since the volume is constant, the air pressure decreases, and a negative pressure is formed inside the storage room. The external air pressure is higher than the air pressure inside the storage room. When the user opens the door 11 again, they need to overcome the additional pressure formed by the air pressure difference, which makes it inconvenient to open the door 11.

[0067] like Figure 2 , Figure 3 and Figure 4As shown, the door assembly 1 in this embodiment includes: a door 11, a mounting bracket 12, and a valve group 13; the mounting bracket 12 is disposed on the door 11, and the mounting bracket 12 forms a first channel 121 connecting the storage space of the storage device with the outside world; the valve group 13 is installed on the mounting bracket 12, and the valve group 13 is used to open the first channel 121 when the pressure in the storage space is less than the pressure in the outside world.

[0068] The door assembly 1 is one of the main components of the storage device, and its structure typically includes an outer shell 111 and an internal insulation layer 112. The main function of the door 11 is to seal the storage space and maintain stable temperature and humidity within the storage space.

[0069] The mounting bracket 12 is installed inside the door 11, and its position and length can be adjusted according to the specific structure and requirements of the storage equipment. The main function of the mounting bracket 12 is to form a first channel 121, which connects the storage space of the storage equipment with the external environment. In this way, when the pressure in the storage space is lower than the external pressure, outside air can enter the storage space through the first channel 121, thereby achieving the purpose of balancing the pressure between the storage space and the external environment.

[0070] Among them, such as Figure 5 and Figure 6 As shown, the interior of the mounting bracket 12 is hollow to form a first channel 121. For example, the mounting bracket 12 can extend in a straight line, that is, the two ends of the first channel 121 can be set on opposite sides of the door body 11, with one side of the opposite sides of the door body 11 facing the storage space and the other side facing the outside. Alternatively, the mounting bracket 12 can include multiple segments, which are connected sequentially to be set at a certain angle. For example, the mounting bracket 12 can be L-shaped, that is, the two ends of the first channel 121 can be set on adjacent sides of the door body 11, with one side of the opposite sides of the door body 11 facing the storage space and the other side facing the outside.

[0071] The mounting bracket 12 is installed on the door body 11 and has at least the following installation methods:

[0072] Firstly, such as Figure 6 As shown, the mounting bracket 12 is located inside the door body 11. The mounting bracket 12 can be located inside the insulation layer 112. The mounting bracket 12 can be placed inside the outer shell 111 first, and then the insulation layer 112 can be filled. The mounting bracket 12 can play a supporting role to resist the expansion force of the insulation layer 112, thereby forming a first channel 121 inside the mounting bracket 12 that connects the storage space of the storage device with the outside world.

[0073] Secondly, the mounting bracket 12 can be set on one side of the door body 11 and connected to the side wall of the door body 11, and the interior of the mounting bracket 12 forms a first channel 121.

[0074] likeFigure 7 As shown, valve assembly 13 is mounted on mounting bracket 12 and is the core part of door assembly 1. Valve assembly 13 automatically opens the first channel 121 when the pressure in the storage space is lower than the external pressure, allowing outside air to enter the storage space.

[0075] The valve assembly 13 is installed on the mounting bracket 12. For example, the valve assembly 13 can be installed in the first channel 121, or the valve assembly 13 can be installed at the inlet or outlet of the first channel 121. The valve assembly 13 can be located entirely in the first channel 121 or partially in the first channel 121, both of which can achieve the effect of controlling the opening and closing of the first channel 121.

[0076] The valve assembly 13 can be assembled with the mounting bracket 12 first, and then the assembly of the valve assembly 13 and the mounting bracket 12 can be assembled with the door body 11; or, the mounting bracket 12 can be assembled with the door body 11 first, and then the valve assembly 13 can be assembled with the mounting bracket 12. The valve assembly 13 can be assembled with the mounting bracket 12 by means of plug-in connection, snap-fit ​​connection or threaded connection.

[0077] For example, when the valve assembly 13 is installed at the inlet or outlet of the first channel 121, at least a portion of the valve assembly 13 can be inserted into the first channel 121, or the valve assembly 13 can be sleeved at the inlet or outlet of the first channel 121, both of which can achieve the effect of controlling the opening and closing of the first channel 121.

[0078] Valve assembly 13 can be a one-way valve or a two-way valve. Valve assembly 13 can open the first channel 121 when the pressure in the storage space is less than the external pressure.

[0079] For example, such as Figure 8 As shown in the figure, the arrows indicate the airflow direction. When valve group 13 is a one-way valve, valve group 13 opens when the pressure in the storage space is less than the external pressure, allowing airflow to enter the storage room from the outside through the first channel 121. When the pressure inside and outside the storage space is balanced, valve group 13 closes to block the first channel 121, thereby achieving the sealing of the storage space. When valve group 13 is a two-way valve, valve group 13 opens when the pressure in the storage space is greater than the external pressure, allowing airflow to enter the outside from the storage room through the first channel 121. When the pressure inside and outside the storage space is balanced, valve group 13 closes to block the first channel 121, thereby achieving the sealing of the storage space.

[0080] According to the door assembly 1 provided in the embodiments of this application, by setting a mounting bracket 12 and a valve group 13 on the door 11, the mounting bracket 12 forms a first channel 121 connecting the storage space of the storage device and the outside world. The valve group 13 is installed on the mounting bracket 12 to control the opening and closing of the first channel 121. When the pressure in the storage space is less than the pressure in the outside world, the storage space is under negative pressure. The valve group 13 opens the first channel 121, and the outside gas replenishes the storage space due to the pressure action, thereby balancing the air pressure inside and outside the storage space, making it convenient for the user to open the door assembly 1.

[0081] This application installs a pressure balancing device consisting of mounting bracket 12 and valve assembly 13 on the door 11. Compared with the scheme of installing the pressure balancing device on the box 2, this application makes reasonable use of the spare space of the door 11, reduces the encroachment on the effective space of the box 2, and can increase the effective volume of the storage equipment. At the same time, installing the pressure balancing device on the door 11 can be used on the original structure of the box 2 without modifying the structure of the box 2, which reduces the cost and improves the flexibility of use. The air pressure balancing device of this application is integrally installed on the door body 11, and the first channel 121 is an integral structure. Compared with the split solution where part of the air pressure balancing device is installed on the housing 2 and the other part on the door body 11, the structure of this application is stable and the modification cost is small. The split solution requires the remanufacturing of both the door body 11 and the housing 2, which is more costly. Moreover, the frequent opening and closing of the door body 11 and the housing 2 will inevitably cause some of the air passages on the door body 11 and the housing 2 to be misaligned, resulting in the misalignment of the interface, which affects the smoothness of air intake, and is also prone to causing defrosting water in the air passage to leak through the misaligned interface, causing damage to parts and affecting normal use.

[0082] In some embodiments, such as Figure 8 As shown, the valve assembly 13 includes: a housing 131 and a valve body 132; the housing 131 forms an installation cavity 1311, the installation cavity 1311 has a first inlet 1312 communicating with the outside and a first outlet 1313 communicating with a first channel 121, and an adsorption element for absorbing moisture in the airflow is provided in the installation cavity 1311; the valve body 132 is disposed in the installation cavity 1311, and the valve body 132 divides the installation cavity 1311 into a first cavity 1314 and a second cavity 1315, the first cavity 1314 has a first inlet 1312, the second cavity 1315 has a first outlet 1313, and the valve body 132 is used to open to communicate with the first channel 121 when the pressure in the second cavity 1315 is less than the pressure in the first cavity 1314.

[0083] The housing 131 forms a mounting cavity 1311, which is used to mount the valve body 132 and place the adsorption element. The adsorption element is used to absorb moisture in the passing airflow to improve the dryness of the gas entering the storage space.

[0084] The adsorption element has at least two of the following forms:

[0085] Firstly, the adsorbent can be a molecular sieve such as hydrated aluminosilicate (zeolite) or natural zeolite. The molecular sieve can be filled into the mounting cavity 1311. When the valve body 132 is open, the airflow passes through the molecular sieve and the moisture in the airflow is adsorbed by the molecular sieve.

[0086] Secondly, the adsorption element can be a silica gel layer or silica gel particles.

[0087] When the adsorption element is a silicone layer, the silicone layer is disposed between the first inlet 1312 and the first outlet 1313, or covers the first inlet 1312 or the first outlet 1313; when the adsorption element is silicone particles, the silicone particles are filled in the mounting cavity 1311, and the airflow needs to pass through the silicone layer or silicone particles before entering the storage space.

[0088] Silica gel has a nanoscale microporous structure and a large number of hydroxyl groups on its surface. Through the mutual attraction between molecules, the hydroxyl groups are attracted to water molecules in the air, thus having good water absorption. By setting silica gel adsorption components, the amount of water entering the storage space from the outside air can be effectively reduced, and the frost inside the storage space can be improved.

[0089] Among them, such as Figure 7 As shown, at least a portion of the housing 131 is disposed within the first channel 121. The housing 131 can be plugged into, threaded into, or snapped into the mounting bracket 12 to facilitate disassembly and maintenance of the housing 131 relative to the mounting bracket 12.

[0090] In some embodiments, the outer wall of the housing 131 may be provided with a snap fastener, and the inner wall of the mounting bracket 12 may be provided with a slot. The housing 131 is snapped into the slot of the mounting bracket 12 through the snap fastener, thereby achieving a quick connection.

[0091] like Figure 8 and Figure 9 As shown, the valve body 132 is disposed within the mounting cavity 1311, dividing the mounting cavity 1311 into a first cavity 1314 and a second cavity 1315. The valve body 132 is used to control the connection or disconnection of the first cavity 1314 and the second cavity 1315, thereby controlling the opening and closing of the first channel 121. When the first cavity 1314 and the second cavity 1315 are not connected, the first cavity 1314 is connected to the outside, and the air pressure in the first cavity 1314 is the same as that in the outside. The second cavity 1315 is connected to the storage space, and the air pressure in the second cavity 1315 is the same as that in the storage compartment. The pressure in the second cavity 1315 is less than the pressure in the first cavity 1314; in other words, the pressure in the storage space is less than the pressure in the outside.

[0092] The valve body 132 can be designed to automatically open when the internal and external pressure difference reaches a certain threshold. The valve body 132 can adopt at least the following two structures:

[0093] Firstly, such as Figure 8 As shown, the valve body 132 can be a combination of a flexible valve plate and a valve seat 1321.

[0094] The flexible valve sheet can be a rubber sheet or a metal sheet. For example, when the pressure in the storage space is less than the external pressure, the rubber sheet deforms and separates from the valve seat 1321, forming a gap between the rubber sheet and the valve seat 1321, and the first channel 121 opens. When the pressure difference between the inside and outside decreases to a certain range or the internal and external air pressures are balanced, the rubber sheet returns to its original position and connects to the valve seat 1321, and the rubber sheet re-seals the first channel 121.

[0095] Secondly, the valve body 132 can be a combination of elastic elements and sealing elements.

[0096] The elastic element can be a spring or an elastic rubber body. For example, when the pressure in the storage space is less than the external pressure, the spring is compressed, the seal is disengaged from the sealing position, and the first channel 121 is opened. When the pressure difference between the inside and outside decreases to a certain range or the internal and external air pressures are balanced, the spring returns to its original position, and the seal re-seals the first channel 121.

[0097] In some embodiments, such as Figure 8 , Figure 9 and Figure 10 As shown, the valve body 132 includes a valve seat 1321 and a valve tongue 1322. The valve seat 1321 is connected to the inner wall of the housing 131, forming a second channel 1323. The second inlet 13233 of the second channel 1323 communicates with the first inlet 1312 of the mounting cavity 1311, and the second outlet 13234 of the second channel 1323 communicates with the first outlet 1313 of the mounting cavity 1311. The valve tongue 1322 is installed on the valve seat 1321 and divides the second channel 1323 into a first segment 13231 and a second segment 13232. The first segment 13231 has a second inlet 13233, and the second segment 13232 has a second outlet 13234. The valve tongue 1322 is used to open when the pressure in the second segment 13232 is less than the pressure in the first segment 13231 to connect the second inlet 13233 and the second outlet 13234.

[0098] The valve seat 1321 and the inner wall of the housing 131 can be connected by at least one of the following methods: plug-in connection, snap-fit ​​connection, and threaded connection. They can also be connected by adhesive bonding or integral molding. The valve seat 1321 is used to connect the housing 131 and the valve tongue 1322.

[0099] The valve tongue 1322 can be installed on the valve seat 1321 by at least one connection method such as integral molding, pivoting or bonding.

[0100] like Figure 8 As shown, valve seat 1321 is installed in mounting cavity 1311, and valve tongue 1322 divides second channel 1323 into first segment 13231 and second segment 13232. Valve tongue 1322 is used to control the connection and disconnection of first segment 13231 and second segment 13232, thereby realizing the control of the connection and disconnection of first cavity 1314 and second cavity 1315, and thus realizing the control of opening and closing of first channel 121.

[0101] The first segment 13231 is connected to the first cavity 1314 and the first inlet 1312, and the air pressure of the first segment 13231 is the same as that of the first cavity 1314. The second segment 13232 is connected to the first outlet 1313 of the second cavity 1315, and the air pressure of the second segment 13232 is the same as that of the second cavity 1315. When the first segment 13231 and the second segment 13232 are not connected, the pressure of the second segment 13232 is less than the pressure of the first segment 13231, which is equivalent to the pressure of the second cavity 1315 being less than the pressure of the first cavity 1314, and the pressure of the storage space being less than the external pressure.

[0102] The valve tongue 1322 can be an elastic element. The valve tongue 1322 can deform under the action of pressure difference to separate from the valve seat 1321, forming a gap that connects the first section 13231 and the second section 13232. When the air pressure is balanced or the pressure difference is less than a certain value, the valve tongue 1322 returns to its original state and connects with the valve seat 1321 to disconnect the first section 13231 and the second section 13232.

[0103] For example, the valve tongue 1322 can be a deformable valve plate, such as a flexible rubber sheet or a metal sheet. At least a portion of the valve tongue 1322 is connected to the valve seat 1321, and at least a portion of the valve tongue 1322 is separate from the valve seat 1321. The valve tongue 1322 and the valve seat 1321 can be connected by at least one of the following methods: integral molding, adhesive bonding, or welding.

[0104] In some embodiments, such as Figure 10 As shown, valve seat 1321 includes vent 13235, which is located between the first section 13231 and the second section 13232. Valve tongue 1322 is movably located above vent 13235 and on the side facing the second outlet 13234. The outer diameter of valve tongue 1322 is larger than the inner diameter of vent 13235 to achieve unidirectional flow of airflow from the second inlet 13233 to the second outlet 13234 in the second channel 1323.

[0105] The vent 13235 connects the first section 13231 and the second section 13232, while the valve tongue 1322 controls the opening and closing of the vent 13235 under the influence of pressure difference. The valve tongue 1322 is located on one side of the vent 13235, and its outer diameter is not less than the inner diameter of the vent 13235. This allows for full coverage of the vent 13235 when the air pressure on both sides of the valve tongue 1322 is balanced or low, thus improving the sealing effect.

[0106] In this embodiment, the valve tongue 1322 is movably disposed above the vent 13235. When the pressure of the storage space is balanced with the outside or the differential pressure is small, the valve tongue 1322 will fall down due to its own weight to close the vent 13235. Since the outer diameter of the valve tongue 1322 is larger than the inner diameter of the vent 13235, the airflow can be unidirectionally flowing in the second channel 1323, reducing the leakage of cold air in the storage space, improving the sealing performance, and reducing energy consumption.

[0107] In some embodiments, such as Figure 10 As shown, the first segment 13231 and the second segment 13232 are vertically distributed. The end of the first segment 13231 facing the first inlet 1312 forms the second inlet 13233. The sidewalls of the first segment 13231 and the second segment 13232 that overlap form a vent 13235. The end of the second segment 13232 facing the first outlet 1313 forms the second outlet 13234.

[0108] The second inlet 13233 and the second outlet 13234 are vertically distributed. The first section 13231 and the second section 13232 have partially overlapping sidewalls. The vent 13235 is located on the overlapping sidewall between the first section 13231 and the second section 13232 to connect the first section 13231 and the second section 13232.

[0109] In other words, the second inlet 13233, the vent 13235, and the second outlet 13234 are located at different heights. Along the direction of airflow, the second outlet 13234 is at the top, the second inlet 13233 is at the bottom, and the vent 13235 is located between the second inlet 13233 and the second outlet 13234. The normals of the second inlet 13233 and the second outlet 13234 are parallel, and the normal of the vent 13235 can be perpendicular to or form an angle with the normals of the second inlet 13233 and the second outlet 13234.

[0110] The airflow flows along the extension direction of the first section 13231 and the second section 13232. The airflow flows into the first section 13231 from the second inlet 13233 and reaches the vent 13235. The airflow direction changes for the first time and flows into the second section 13232 from the vent 13235 on the overlapping side wall of the first section 13231 and the second section 13232, reaching the second outlet 13234. After the airflow direction changes for the second time, the airflow flows into the second cavity 1315 from the second outlet 13234.

[0111] In this embodiment, the airflow direction can be bent at least once, thereby intercepting some of the moisture in the airflow and reducing the humidity of the airflow.

[0112] In some embodiments, such as Figure 8 As shown, the inner wall of the housing 131 is provided with a first anti-fooling component 1315, and the outer wall of the valve seat 1321 is provided with a second anti-fooling component 13211 that is adapted to the first anti-fooling component 1315.

[0113] The first anti-misalignment component 1315 of the housing 131 is adapted to the second anti-misalignment component 13211 of the valve seat 1321. When assembling the valve seat 1321 with the housing 131, the user only needs to align the outer wall of the valve seat 1321 with the inner wall of the housing 131 and then gently push it in. Due to the presence of the first anti-misalignment component 1315 and the second anti-misalignment component 13211, the two can only fully cooperate when the installation direction and position of the valve seat 1321 are completely correct. If the position of the valve seat 1321 is incorrect, the second anti-misalignment component 13211 will not be able to match the first anti-misalignment component 1315, thus preventing the user from continuing the installation.

[0114] For example, one of the first anti-misalignment component 1315 and the second anti-misalignment component 13211 may be a protrusion and the other may be a groove, or the first anti-misalignment component 1315 and the second anti-misalignment component 13211 may be specific alignment marks, etc.

[0115] In this embodiment, by setting the first anti-foolproof component 1315 and the second anti-foolproof component 13211, the installation process can be simplified, the installation difficulty can be reduced, and the valve seat 1321 can be ensured to be in the correct installation direction. This avoids the situation where the valve seat 1321 cannot open the first channel 121 when the pressure in the storage space is less than the external pressure due to the incorrect installation direction.

[0116] In some embodiments, such as Figure 8As shown, the first anti-misalignment component 1315 can extend along the inner wall of the housing 131, and the second anti-misalignment component 13211 can extend along the outer wall of the valve seat 1321. The first anti-misalignment component 1315 and the second anti-misalignment component 13211 cooperate to guide and limit the valve seat 1321 relative to the housing 131 during assembly, thereby reducing the rotation of the valve seat 1321 relative to the housing 131 and improving the reliability of the valve assembly 13.

[0117] In some embodiments, such as Figure 7 As shown, the inner wall of the mounting bracket 12 is provided with a third anti-mistake component 122, and the outer wall of the housing 131 is provided with a fourth anti-mistake component that is compatible with the third anti-mistake component 122.

[0118] The third anti-misalignment component 122 is compatible with the fourth anti-misalignment component. When assembling the mounting bracket 12 and the housing 131, the user only needs to align the outer wall of the housing 131 with the inner wall of the mounting bracket 12 and then gently push it in. Due to the presence of the third and fourth anti-misalignment components, they can only fully cooperate when the valve assembly 13 is installed in the correct direction and position. If the direction and position of the valve assembly 13 are incorrect, the third anti-misalignment component 122 will not be able to match the fourth anti-misalignment component, thus preventing the user from continuing installation.

[0119] For example, one of the third anti-mistake element 122 and the fourth anti-mistake element may be a protrusion and the other may be a groove, or the third anti-mistake element 122 and the fourth anti-mistake element may be specific alignment marks, etc.

[0120] In this embodiment, by setting the third anti-foolproof component 122 and the fourth anti-foolproof component, the installation process of the valve assembly 13 and the mounting bracket 12 can be simplified, the installation difficulty can be reduced, and the valve assembly 13 can be ensured to be in the correct installation direction. This avoids the situation where the valve assembly 13 cannot open the first channel 121 when the pressure in the storage space is less than the external pressure due to the incorrect installation direction.

[0121] In some embodiments, such as Figure 7 As shown, the third anti-misalignment component 122 can extend along the extension direction of the inner wall of the mounting bracket 12, and the fourth anti-misalignment component can extend along the extension direction of the outer wall of the housing 131. The third anti-misalignment component 122 and the fourth anti-misalignment component cooperate to guide and limit the valve assembly 13 during assembly with the mounting bracket 12, thereby reducing the rotation of the valve assembly 13 relative to the mounting bracket 12 during the assembly process and improving the reliability of the valve assembly 13.

[0122] In some embodiments, such as Figure 8 and Figure 9As shown, the first anti-mistake component 1315 and the fourth anti-mistake component can be the same structure. For example, the inner wall of the housing 131 is provided with a protrusion protruding into the housing 131, which is the first anti-mistake component 1315; the back of the protrusion is recessed into the outer wall of the housing 131 to form a groove, which is the fourth anti-mistake component. The same structure can realize the limiting and anti-mistake of the housing 131 and the valve seat 1321, and can also realize the limiting and anti-mistake of the mounting bracket 12 and the housing 131. It has a high degree of integration and a simple structure.

[0123] In some embodiments, such as Figure 8 As shown, the inner wall of the housing 131 is provided with at least one limiting protrusion 1318, which is adapted to limit the valve body 132 along the axial direction of the housing 131.

[0124] In this embodiment, the limiting protrusions 1318 may include multiple protrusions, which are distributed circumferentially along the housing 131. During the process of inserting the valve body 132 into the mounting cavity 1311 along the axial direction of the housing 131, the limiting protrusions 1318 can limit the valve body 132 along the axial direction of the housing 131, so that the valve body 132 is assembled with the housing 131 in the correct position.

[0125] When the second cavity 1315 is filled with a molecular sieve adsorbent, the limiting protrusion 1318 limits the valve body 132 along the axial direction of the housing 131, which can fix the volume of the second cavity 1315, facilitate the compression of the molecular sieve adsorbent, increase the density of the molecular sieve adsorbent, and improve the water absorption effect.

[0126] In some embodiments, such as Figure 9 As shown, the end of the first segment 13231 facing the first inlet 1312 is open to form the second inlet 13233, and the end of the second segment 13232 facing the first outlet 1313 is provided with a first filter hole, which forms the second outlet 13234.

[0127] In this embodiment, the second chamber 1315 is filled with an adsorbent. The second inlet 13233 is open, which can increase the airflow. The end of the first outlet 1313 is provided with a first filter hole. When the adsorbent is a molecular sieve and is installed in the second chamber 1315, the pore size of the first filter hole is smaller than the particle size of the molecular sieve. The first filter hole can reduce the amount of adsorbent entering the valve seat 1321 from the second outlet 13234, which plays a certain protective role for the valve assembly 13, extends the service life of the valve assembly 13, improves the reliability of the valve assembly 13, and increases the flow rate of the valve assembly 13.

[0128] In some embodiments, such as Figure 8 and Figure 11As shown, the housing 131 includes: a housing body 1316 and a cover 1317. The housing body 1316 has an open end, and the valve body 132 is disposed inside the housing body 1316. The housing body 1316 is detachably connected to the mounting bracket 12. The cover 1317 is detachably connected to the open end of the housing body 1316, and the cover 1317 has a first outlet 1313.

[0129] The cover 1317 is detachably disposed at the open end of the shell body 1316, and the cover 1317 can be connected to the shell body 1316 by at least one of plug-in connection, snap-on connection or threaded connection.

[0130] like Figure 11 As shown, a fastener can be provided at one end of the cover 1317 facing the shell body 1316, and a slot adapted to the fastener can be provided at the open end of the shell body 1316. The cover 1317 is engaged with the slot of the shell body 1316 through the fastener to achieve quick disassembly and connection.

[0131] The valve body 132 can be inserted into the shell body 1316 from the open end to achieve assembly with the shell body 1316. The adsorption component can also be inserted into the shell body 1316 from the open end, which facilitates the replacement and maintenance of the valve body 132 and the adsorption component. Compared with the related technology where the molecular sieve adsorption component is not replaceable, which leads to the failure of defrosting after the molecular sieve adsorption component fails, the replaceable adsorption component of this application can achieve effective dehumidification of the airflow and improve the defrosting effect.

[0132] In some embodiments, such as Figure 8 As shown, the shell body 1316 has a second filter hole at the end opposite to the open end, which forms the first inlet 1312; the cover 1317 has a third filter hole, which forms the first outlet 1313.

[0133] The housing 131 has filter holes at both the first inlet 1312 and the first outlet 1313. The second filter hole can filter out impurities in the external airflow, reducing the amount of external impurities entering the mounting cavity 1311 through the first inlet 1312 and extending the service life of the valve assembly 13. The third filter hole is located at the tail end of the housing 131, which can reduce the amount of adsorbent leakage from the first outlet 1313 to the first channel 121, reduce the decrease in density and water absorption caused by adsorbent leakage, extend the service life of the adsorbent, and improve water absorption efficiency.

[0134] In some embodiments, the pore sizes of the first filter pore, the second filter pore, and the third filter pore can be the same or different. The first filter pore and the third filter pore are located on both sides of the molecular sieve adsorbent, and the first filter pore and the third filter pore are smaller than the particle size of the molecular sieve adsorbent.

[0135] In some embodiments, such asFigure 3 and Figure 4 As shown, the door body 11 includes an outer shell 111 and an insulation layer 112 disposed inside the outer shell 111. The outer wall of the outer shell 111 facing the outside has a first opening, and the inner wall of the outer shell 111 facing the storage space has a second opening. The mounting bracket 12 is disposed inside the insulation layer 112 and its two ends are respectively connected to the first opening and the second opening.

[0136] After the mounting bracket 12 is installed inside the outer casing 111, an insulation layer 112 is then filled in. The insulation layer 112 can be a layer of foamed material. The mounting bracket 12 provides support to resist the expansion force of the insulation layer 112, thereby forming a first channel 121 inside the mounting bracket 12 that connects the storage space of the storage device to the outside. The insulation layer 112 provides protection and insulation for the first channel 121.

[0137] Installing the mounting bracket 12 inside the door body 11 can increase the integrated functions of the door body 11, make reasonable use of the spare space of the door body 11, reduce the encroachment on the effective space of the cabinet 2, and increase the effective volume of the storage equipment. At the same time, installing the air pressure balancing device on the door body 11 can be used on the original structure of the cabinet 2 without modifying the structure of the cabinet 2, which reduces the cost and improves the flexibility of use.

[0138] In some embodiments, such as Figure 5 and Figure 6 As shown, the door assembly 1 also includes a water collection box 14 and a heating device. The heating device is disposed on the outer surface of the mounting bracket 12, and the water collection box 14 is disposed on the inner wall of the door 11 and communicates with the first channel 121. The water collection box 14 is used to collect defrosting water.

[0139] The water collection box 14 can be connected to the door body 11 via at least one connection method, such as snap-fit ​​connection, plug-in connection, or threaded connection. The heating device is used to heat the mounting bracket 12. After the outside hot air enters the first channel 121 and pre-cools and condenses into frost, the heating device can be turned on to defrost. The defrosting water flows out along the first channel 121 and into the water collection box 14. When the water collection box 14 is full, it can remind the user to replace the water.

[0140] For example, the heating device may be a heating wire or a heating plate, and the heating device is attached to the outer surface of the mounting bracket 12 to heat and defrost the first channel 121.

[0141] In related technologies, the air pressure balancing device does not have a defrosting structure, and the pressure relief hole is easily blocked by frost, resulting in pressure relief failure and difficulty in opening the door. This application can defrost by using a heating device, reducing the risk of the first filter hole, the second filter hole and the third filter hole being blocked. The water after defrosting can be discharged into the water collection box 14, and the water collection box 14 can be cleaned regularly.

[0142] In some embodiments, such as Figure 6 and Figure 12 As shown, the door assembly 1 also includes a support assembly 15 and a sealing edge 16. The support assembly 15 is disposed on the inner wall of the door 11, and the sealing edge 16 is disposed on the inner wall of the door 11. When the door 11 is closed relative to the storage device housing 2, both the sealing edge 16 and the support assembly 15 are sandwiched between the door 11 and the housing 2. The compression height of the sealing edge 16 is H1. When the door assembly 1 is not provided with the support assembly 15, the compression height of the sealing edge 16 is H2, satisfying H2 > H1.

[0143] When the door 11 is closed relative to the storage unit 2, the sealing edge 16 and the support assembly 15 are both sandwiched between the door 11 and the storage unit 2. The sealing edge 16 has a certain amount of compression to isolate the storage space from the outside world. The support assembly 15 is used to limit the amount of compression of the sealing edge 16 to reduce the excessive compression of the sealing edge 16 under negative pressure in the storage space and improve the service life of the sealing edge 16.

[0144] Wherein, H1 is the compression height of the sealing edge 16 when it is in conjunction with the support component 15, and H2 is the compression height of the sealing edge 16 when it is operating alone.

[0145] For example, the original height of the sealing edge 16 can be 5cm. When the door 11 is closed relative to the storage device box 2 and the support component 15 is provided, the compressed height H1 of the sealing edge 16 is 2cm, and the sealing edge 16 still has 3cm remaining. When the door 11 is closed relative to the storage device box 2 and the support component 15 is not provided, the compressed height H2 of the sealing edge 16 is 4cm, and the sealing edge 16 still has 1cm remaining.

[0146] The sealing edge 16 can be a rubber part, and the support component 15 can be one or more of rubber parts, plastic parts, and metal parts.

[0147] In some embodiments, such as Figure 2 As shown, multiple support components 15 can be provided, and the multiple support components 15 are spaced apart along the extension direction of the sealing edge 16 to improve the support effect.

[0148] In some embodiments, a hinge member is provided on one side of the door body 11 to be hinged to the box body 2, and a support assembly 15 is provided on the opposite side of the door body 11 to enhance the support effect.

[0149] In some embodiments, the height of the support component 15 protruding from the inside of the door body 11 is less than the height of the sealing edge 16 protruding from the inner wall of the door body 11; the stiffness of the support component 15 is greater than the height of the sealing edge 16.

[0150] In this embodiment, on the one hand, since the rigidity of the support component 15 is greater than the height of the sealing edge 16, when the door 11 is closed relative to the storage device's housing 2, the remaining height of the sealing edge 16 after compression is equal to the height of the support component 15 protruding from the inside of the door 11, thus reducing the possibility of the sealing edge 16 being over-compressed. On the other hand, by setting the height of the support component 15 protruding from the inside of the door 11 to be less than the height of the sealing edge 16 protruding from the inner wall of the door 11, a compression allowance can be reserved for the sealing edge 16. When the door 11 is closed relative to the storage device's housing 2, the sealing edge 16 can be compressed within a reasonable compression range, which not only improves the sealing effect of the sealing edge 16 but also reduces the possibility of the sealing edge 16 being over-compressed, extends the service life of the sealing edge 16, and reduces the difficulty of opening the door.

[0151] In some embodiments, such as Figure 13 and Figure 14 As shown, the support assembly 15 includes a support part 151 and a buffer part 152. The support part 151 is connected to the door body 11, and the buffer part 152 is disposed on the side of the support part 151 away from the door body 11. The buffer part 152 is adapted to abut against the box body 2.

[0152] In this embodiment, the support part 151 can be connected to the door body 11 by at least one connection method such as threaded connection, integral molding, plug-in connection or snap-fit. The hardness of the buffer part 152 is greater than that of the support part 151. When the door body 11 is closed relative to the storage device box 2, the buffer part 152 is located between the support part 151 and the box 2. The buffer part 152 can play a buffering role and protect both the box 2 and the support component 15.

[0153] The support part 151 can be a rigid part such as a plastic part, a metal part or a wooden part; the buffer part 152 can be a flexible part such as a rubber part or a sponge part.

[0154] In some embodiments, such as Figure 14 As shown, the bottom of the support part 151 has an outwardly bent flange, and the buffer part 152 is fitted onto the flange.

[0155] The buffer part 152 is an elastic element with an opening. The buffer part 152 can be fitted onto the bottom of the support part 151 through the opening, which is simple to assemble and easy to replace.

[0156] like Figure 1 As shown, this application embodiment also provides a storage device, including: a box 2 and a door assembly 1 of any of the above embodiments, the box 2 forming a storage compartment; the door assembly 1 is closably installed on the box 2 for closing the storage compartment;

[0157] According to the storage device provided in the embodiments of this application, by setting a mounting bracket 12 and a valve group 13 on the door body 11, the mounting bracket 12 forms a first channel 121 connecting the storage space of the storage device and the outside world. The valve group 13 is installed on the mounting bracket 12 to control the opening and closing of the first channel 121. When the pressure in the storage space is less than the pressure in the outside world, the storage space is under negative pressure. The valve group 13 opens the first channel 121, and the outside gas replenishes the storage space due to the pressure action, thereby balancing the air pressure inside and outside the storage space, making it convenient for the user to open the door assembly 1.

[0158] 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.

[0159] 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.

[0160] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0161] In the description of this application, "multiple" means two or more.

[0162] 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 it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0163] 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.

[0164] 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.

[0165] 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 door assembly, characterized in that, The door assembly, used in storage equipment, includes: Door body; The mounting bracket is installed on the door body, and the mounting bracket forms a first channel connecting the storage space of the storage device with the outside world; A valve assembly, mounted on the mounting bracket, is used to open the first channel when the pressure in the storage space is lower than the external pressure.

2. The door assembly according to claim 1, characterized in that, The valve assembly includes: The housing forms an installation cavity, which has a first inlet communicating with the outside and a first outlet communicating with the first channel. An adsorption element for absorbing moisture in the airflow is provided inside the installation cavity. A valve body is disposed in the mounting cavity, the valve body dividing the mounting cavity into a first cavity and a second cavity, the first cavity having a first inlet and the second cavity having a first outlet, the valve body being used to open to connect the first channel when the pressure in the second cavity is less than the pressure in the first cavity.

3. The door assembly according to claim 2, characterized in that, The valve body includes: A valve seat is connected to the inner wall of the housing, forming a second channel. The second inlet of the second channel is connected to the first inlet of the mounting cavity, and the second outlet of the second channel is connected to the first outlet of the mounting cavity. A valve tongue, mounted on the valve seat, divides the second channel into a first segment and a second segment, the first segment having a second inlet and the second segment having a second outlet, the valve tongue being used to open to connect the second inlet and the second outlet when the pressure in the second segment is less than the pressure in the first segment.

4. The door assembly according to claim 3, characterized in that, The valve seat includes a vent, which is located between the first section and the second section. The valve tongue is movably located above the vent and on the side facing the second outlet. The outer diameter of the valve tongue is larger than the inner diameter of the vent to achieve unidirectional airflow from the second inlet to the second outlet in the second channel.

5. The door assembly according to claim 3, characterized in that, The first segment and the second segment are vertically distributed. The end of the first segment facing the first inlet forms the second inlet. The sidewalls of the first segment and the second segment that overlap form the vent. The end of the second segment facing the first outlet forms the second outlet.

6. The door assembly according to claim 3, characterized in that, The inner wall of the housing is provided with a first anti-fooling component, and the outer wall of the valve seat is provided with a second anti-fooling component that is adapted to the first anti-fooling component.

7. The door assembly according to claim 3, characterized in that, The end of the first segment facing the first inlet is open to form the second inlet, and the end of the second segment facing the first outlet is provided with a first filter hole, which forms the second outlet.

8. The door assembly according to claim 2, characterized in that, The housing includes: The shell body has an open end, the valve body is disposed in the shell body, and the shell body is detachably connected to the mounting bracket; A cover body, which is detachably connected to the open end of the shell body, and the cover body having the first outlet.

9. The door assembly according to claim 8, characterized in that, A second filter hole is provided at the end of the shell body away from the open end, and the second filter hole forms the first inlet; The cover has a third filter hole, which forms the first outlet.

10. The door assembly according to claim 2, characterized in that, The inner wall of the mounting bracket is provided with a third anti-mistake component, and the outer wall of the housing is provided with a fourth anti-mistake component that is compatible with the third anti-mistake component.

11. The door assembly according to claim 2, characterized in that, The inner wall of the housing is provided with at least one limiting protrusion, which is adapted to limit the valve body along the axial direction of the housing.

12. The door assembly according to any one of claims 1-11, characterized in that, The door includes an outer shell and an insulation layer disposed within the outer shell. The outer wall of the outer shell facing the outside has a first opening, and the inner wall of the outer shell facing the storage space has a second opening. The mounting bracket is disposed within the insulation layer and its two ends are respectively connected to the first opening and the second opening.

13. The door assembly according to any one of claims 1-11, characterized in that, The door assembly also includes a water collection box and a heating device. The heating device is disposed on the outer surface of the mounting bracket, and the water collection box is disposed on the inner wall of the door and communicates with the first channel. The water collection box is used to collect defrosting water.

14. The door assembly according to any one of claims 1-11, characterized in that, The door assembly further includes a support assembly and a sealing edge, wherein the support assembly is disposed on the inner wall of the door body and the sealing edge is disposed on the inner wall of the door body; When the door is closed relative to the storage device, the sealing edge and the support assembly are both sandwiched between the door and the storage device. The compression height of the sealing edge is H1. When the door assembly is not equipped with the support assembly, the compression height of the sealing edge is H2, satisfying H2 > H1.

15. The door assembly according to claim 14, characterized in that, The height of the support component protruding from the inside of the door is less than the height of the sealing edge protruding from the inner wall of the door; the rigidity of the support component is greater than the height of the sealing edge.

16. The door assembly according to claim 14, characterized in that, The support assembly includes a support portion and a buffer portion. The support portion is connected to the door body, and the buffer portion is disposed on the side of the support portion away from the door body. The buffer portion is adapted to abut against the box body.

17. A storage device, characterized in that, include: The box body forms a storage compartment; The door assembly as described in any one of claims 1-16, wherein the door assembly is closably mounted on the housing for closing the storage compartment.

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