Refrigerator

Abstract

The utility model discloses a refrigerator, include: cabinet, cabinet door and pressure difference balance device. The cabinet and cabinet door define and hold the cavity, pressure difference balance device is located on the cabinet door, and pressure difference balance device is suitable for communicating holding cavity and outside, wherein, pressure difference balance device includes: limit piece and moving part, limit piece cooperates with the cabinet door, and the limit piece is equipped with through -hole, and the through -hole communicates holding cavity and outside, moving part is located at the through -hole, and moving part is configured as can open or close through -hole. Therefore, can balance the pressure difference of holding cavity and refrigerator outside in the refrigerator, reduces the cabinet door opening resistance, ensures that the cabinet door can open smoothly, closes the through -hole through the moving part of pressure difference balance device, can improve the sealing of holding cavity, simultaneously, through being located on the cabinet door with pressure difference balance device, has improved the integration and compactness of pressure difference balance device and cabinet door, need not to change the cabinet structure, improved the assembly efficiency and universality of pressure difference balance device.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a refrigerator. Background Technology

[0002] In existing technology, after the refrigerator door is opened and closed, the temperature inside the refrigerator drops rapidly, causing the air volume inside the refrigerator to contract, making the air pressure inside the refrigerator lower than the air pressure outside, and making it difficult to open the door. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a refrigerator that ensures the cabinet door can be opened smoothly.

[0004] According to a first aspect of the present invention, the refrigerator includes: a cabinet, a door, and a pressure balancing device. The cabinet and the door define a receiving cavity. The pressure balancing device is disposed on the door and is adapted to connect the receiving cavity to the outside. The pressure balancing device includes: a limiting member and a moving member. The limiting member cooperates with the door and has a through hole that connects the receiving cavity to the outside. The moving member is disposed at the through hole and is configured to open or close the through hole.

[0005] According to the refrigerator of this utility model embodiment, by opening the through hole through the moving part of the pressure differential balancing device, the pressure difference between the refrigerator's internal cavity and the outside of the refrigerator can be balanced, reducing the resistance to opening the cabinet door and ensuring that the cabinet door can be opened smoothly. By closing the through hole through the moving part of the pressure differential balancing device, the sealing performance of the cavity can be improved. At the same time, by placing the pressure differential balancing device on the cabinet door, the integration and compactness of the pressure differential balancing device and the cabinet door are improved, without the need to modify the cabinet structure, thus improving the assembly efficiency and versatility of the pressure differential balancing device.

[0006] In some embodiments, the movable member is configured to open the through-hole when the pressure inside the receiving cavity is less than the external pressure; or, the movable member is configured to close the through-hole when the pressure inside the receiving cavity is greater than or equal to the external pressure.

[0007] This improves the automation level of the differential pressure balancing device, making it easier to balance the pressure difference between the storage cavity and the outside of the refrigerator, reducing the resistance to opening the cabinet door, effectively ensuring the airtightness of the storage cavity, preventing cold air in the storage cavity from leaking out of the through hole, maintaining the temperature inside the storage cavity, and reducing the refrigerator's energy consumption.

[0008] In some embodiments, the limiting member includes a limiting portion and a mating portion, the limiting portion mating with the sidewall of the through hole; one end of the mating portion is connected to the end of the limiting portion adjacent to the moving member, the other end of the mating portion extends along the height direction of the cabinet door in a direction away from the moving member, the through hole is provided on the mating portion, and the cross-sectional area of ​​the through hole gradually decreases from the one end of the mating portion to the other end.

[0009] Therefore, it can provide support and guidance for the moving parts. When the air pressure in the receiving cavity is less than the external air pressure, the moving parts can move quickly toward the top of the cabinet door. When the air pressure in the receiving cavity is greater than or equal to the external air pressure, the moving parts can form a tight fit with the mating parts, improving the sealing performance.

[0010] In some embodiments, the refrigerator includes: a first channel structure disposed inside the cabinet door, the first channel structure being connected to the cabinet door at the bottom of the cabinet door, a movable member disposed inside the first channel structure, the first channel structure including an inlet and an outlet, a limiting member disposed at the inlet, and the movable member being configured to connect or disconnect the inlet and the outlet.

[0011] Therefore, it is convenient to open and close the through hole by moving the part to realize the connection and isolation of the inlet and outlet of the first channel structure. When the gas pressure in the receiving cavity is less than the external gas pressure, the external gas can flow from the inlet to the outlet and into the receiving cavity to balance the pressure difference. When the gas pressure in the receiving cavity is greater than or equal to the external gas pressure, the inlet and outlet are not connected to prevent the cold air in the receiving cavity from leaking to the outside from the inlet.

[0012] In some embodiments, the first channel structure has a guide sidewall disposed opposite to the inlet, and the guide sidewall extends obliquely from the inlet to the outlet.

[0013] This reduces the space occupied by the first channel structure, and the guide sidewall can guide the flow of gas within the first channel structure, increasing the flow velocity from the inlet to the outlet and accelerating the efficiency of balancing the pressure difference between the inside and outside of the refrigerator.

[0014] In some embodiments, the refrigerator further includes a second channel structure disposed inside the cabinet door, the second channel structure connecting the outlet and the receiving cavity.

[0015] This facilitates the connection between the first channel structure and the receiving cavity through the second channel structure, simplifies the structure of the first channel structure, and at the same time, it can limit and position the first channel structure, thereby improving the installation efficiency of the first channel structure.

[0016] In some embodiments, the cabinet door includes: a first housing and a second housing, the first housing having an installation opening; the second housing and the first housing being disposed opposite to each other along the thickness direction of the cabinet door and connected to each other, a second channel structure being disposed between the first housing and the second housing, one end of the second channel structure being connected to the first housing at the installation opening, and the other end of the second channel structure being connected to the first channel structure.

[0017] Therefore, by forming an installation port on the first housing, the second channel structure can be connected to the receiving cavity through the installation port to balance the pressure difference between the refrigerator receiving cavity and the outside, and at the same time, improve the stability and reliability of the second channel structure.

[0018] In some embodiments, the first housing is formed with a sealing groove that extends circumferentially along the first housing; the refrigerator further includes a seal disposed within the sealing groove, at least a portion of the seal covering a portion of the mounting opening.

[0019] This provides ample installation space for the seals, reduces the space occupied by the seals in the cabinet door, improves the compactness of the cabinet door, prevents cold air leakage from the cavity, improves the sealing performance of the cabinet door, and enhances the reliability of the refrigerator.

[0020] In some embodiments, the first channel structure is detachably connected to the cabinet door; and / or, the second channel structure is detachably connected to the cabinet door.

[0021] This improves the installation and disassembly efficiency of the first and second channel structures and the cabinet door, facilitates the maintenance and replacement of the first and second channel structures, and enhances operational convenience.

[0022] According to a second aspect of the present invention, the refrigerator includes: a cabinet, a door, and a pressure differential balancing device, wherein the cabinet and the door define a receiving cavity; the pressure differential balancing device is disposed on the door and is adapted to connect the receiving cavity to the outside; wherein the pressure differential balancing device includes: a channel assembly and a moving member, the channel assembly connecting the receiving cavity to the outside; the moving member is disposed within the channel assembly; the moving member is configured to open the channel assembly when the pressure in the receiving cavity is less than the external pressure; or, the moving member is configured to close the channel assembly when the pressure in the receiving cavity is greater than or equal to the external pressure.

[0023] This allows for the rapid balancing of the pressure difference between the refrigerator's internal cavity and the external environment, improving the efficiency and reliability of pressure balancing, effectively reducing the resistance for users to open the cabinet door, and enhancing the refrigerator's integration and compactness. Furthermore, the simple structure of the pressure balancing device facilitates manufacturing, assembly, and maintenance, thereby reducing production costs.

[0024] Additional aspects and advantages of this invention 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 the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial cross-sectional schematic diagram of a refrigerator according to an embodiment of the present utility model; Figure 2 This is a partial cross-sectional schematic diagram of a refrigerator according to an embodiment of the present utility model from another perspective; Figure 3 This is a partial schematic diagram of a refrigerator according to an embodiment of the present utility model; Figure 4 This is a partial schematic diagram of a refrigerator according to another perspective of an embodiment of the present utility model; Figure 5 This is a partial schematic diagram of a refrigerator according to another perspective of an embodiment of the present utility model; Figure 6 yes Figure 1 Enlarged schematic diagram of region P in the middle; Figure 7 yes Figure 2 Enlarged schematic diagram of the mid-Q region; Figure 8 yes Figure 3 Enlarged schematic diagram of region M in the middle; Figure 9 This is a partial schematic diagram of the bottom of a refrigerator according to an embodiment of the present utility model; Figure 10 yes Figure 9 A magnified schematic diagram of region N in the middle.

[0026] Figure label: 100. Refrigerator; 10. Cabinet door; 11. First housing; 111. Mounting port; 12. Second housing; 121. Sealing element; 20. Differential pressure balancing device; 21. Limiting component; 211. Limiting part; 212. Fitting part; 22. Through hole; 23. Moving part; 24. Channel assembly; 30. First channel structure; 301. Inlet; 302. Outlet; 31. Guide sidewall; 32. Second channel structure. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-10The refrigerator 100 according to an embodiment of the present utility model includes: a cabinet, a cabinet door 10 and a pressure differential balancing device 20.

[0028] like Figure 6 , Figure 9 and Figure 10 As shown, the cabinet body and cabinet door 10 define the receiving cavity; the differential pressure balancing device 20 is provided on the cabinet door 10, and the differential pressure balancing device 20 is adapted to connect the receiving cavity and the outside; wherein, the differential pressure balancing device 20 includes: a limiting member 21 and a moving member 23, the limiting member 21 cooperates with the cabinet door 10, the limiting member 21 is provided with a through hole 22, the through hole 22 connects the receiving cavity and the outside; the moving member 23 is provided at the through hole 22, and the moving member 23 is configured to open or close the through hole 22.

[0029] The cabinet door 10 is rotatably connected to the cabinet body. The cabinet door 10 rotates to open and close the receiving cavity. Figures 1-5 The differential pressure balancing device 20 is located at the bottom of the cabinet door 10 along the height direction of the cabinet door 10. The through hole 22 passes through the limiting member 21 along the height direction of the cabinet door 10. The internal cavity of the refrigerator 100 and the outside can be connected through the through hole 22. The limiting member 21 and the moving member 23 form a separable fit. When the limiting member 21 and the moving member 23 are separated, the moving member 23 opens the through hole 22, and the internal cavity of the refrigerator 100 is connected to the outside. When the limiting member 21 and the moving member 23 are fitted together, the moving member 23 closes the through hole 22, and the internal cavity of the refrigerator 100 is not connected to the outside.

[0030] According to the refrigerator 100 of this utility model embodiment, by opening the through hole 22 through the moving part 23 of the pressure differential balancing device 20, the pressure difference between the internal cavity and the outside of the refrigerator 100 can be balanced, reducing the opening resistance of the cabinet door 10 and ensuring that the cabinet door 10 can be opened smoothly. By closing the through hole 22 through the moving part 23 of the pressure differential balancing device 20, the sealing performance of the cavity can be improved. At the same time, by setting the pressure differential balancing device 20 on the cabinet door 10, the integration and compactness of the pressure differential balancing device 20 and the cabinet door 10 are improved, without the need to modify the cabinet structure, thus improving the assembly efficiency and versatility of the pressure differential balancing device 20.

[0031] Optionally, the movable part 23 may be made of materials such as plastic, glass, zinc alloy, or aluminum.

[0032] In this application, preferably, the differential pressure balancing device 20 is located at the bottom of the cabinet door 10 and is located along at least one side edge of the cabinet door 10 along the width direction of the cabinet door 10, so as to realize the hidden setting of the differential pressure balancing device 20, increase the overall appearance of the cabinet door 10, and make the refrigerator 100 more beautiful and simple in appearance.

[0033] According to some embodiments of this utility model, the movable member 23 is configured such that the pressure inside the receiving cavity is less than the external pressure, and the movable member 23 opens the through hole 22. That is, when the external pressure of the refrigerator 100 is greater than the pressure inside the receiving cavity, the movable member 23 is subjected to the external pressure of the refrigerator 100 and moves towards the top of the cabinet door 10 along the height direction of the cabinet door 10. The movable member 23 and the limiting member 21 separate, and the through hole 22 is opened, thereby connecting the outside of the refrigerator 100 with the receiving cavity. Air from outside the refrigerator 100 enters the receiving cavity through the through hole 22 until the pressure inside the receiving cavity is the same as the external pressure of the refrigerator 100.

[0034] Therefore, by using the pressure difference to make the moving part 23 quickly open the through hole 22, the automation level of the pressure difference balancing device 20 is improved. At the same time, it is convenient for external air to pass through the through hole 22 and enter the receiving cavity, which is convenient for balancing the pressure difference between the receiving cavity and the outside of the refrigerator 100, reducing the opening resistance of the cabinet door 10, and making the cabinet door 10 open smoothly. This effectively solves the problem that the cabinet door 10 cannot be opened due to the negative pressure environment formed in the receiving cavity caused by the pressure inside the receiving cavity being less than the external pressure.

[0035] Optionally, the movable member 23 is configured to close the through hole 22 when the pressure inside the cavity is greater than or equal to the external pressure. That is, when the pressure inside the cavity is greater than or equal to the external pressure of the refrigerator 100, the movable member 23 can move along the height direction of the cabinet door 10 away from the top of the cabinet door 10 under the action of the internal pressure or its own weight, thereby cooperating with the limiting member 21 and closing the through hole 22, preventing communication between the outside of the refrigerator 100 and the cavity. Therefore, when the pressure inside the cavity is greater than or equal to the external pressure, the movable member 23 closes the through hole 22, effectively ensuring the airtightness of the cavity, preventing cold air from leaking from the through hole 22, maintaining the temperature inside the cavity, and reducing the energy consumption of the refrigerator 100.

[0036] According to some embodiments of this utility model, such as Figure 6 As shown, the limiting member 21 includes a limiting part 211 and a mating part 212. The limiting part 211 mates with the side wall of the through hole 22. One end of the mating part 212 is connected to the end of the limiting part 211 adjacent to the moving member 23. The other end of the mating part 212 extends along the height direction of the cabinet door 10 in a direction away from the moving member 23. The through hole 22 is provided on the mating part 212. From the one end of the mating part 212 to the other end, the cross-sectional area of ​​the through hole 22 gradually decreases.

[0037] The limiting part 211 extends along the height direction of the cabinet door 10. One end of the mating part 212 is connected to the end of the limiting part 211 near the top of the cabinet door 10 along the height direction of the cabinet door 10. The other end of the mating part 212 extends along the height direction of the cabinet door 10 away from the top of the cabinet door 10. The mating part 212 is generally funnel-shaped, with the other end of the mating part 212 located inside the limiting part 211. The cross-sectional shape of the mating part 212 gradually decreases along the height direction of the cabinet door 10 towards the end of the limiting part 211 away from the mating part 212. The mating part 212 defines a through hole 22 that penetrates the mating part 212 along the height direction of the cabinet door 10. The moving member 23 forms a separable fit with the mating part 212 to open and close the through hole 22. Along the height direction of the cabinet door 10, from the top to the bottom of the cabinet door 10, the cross-sectional area of ​​the through hole 22 gradually decreases to block the moving member 23. Optionally, the movable component 23 is a spherical structural component.

[0038] Therefore, by setting the through hole 22 on the mating part 212, the movable part 23 can be opened or closed by separably mating with the mating part 212. The design of the cross-sectional area of ​​the through hole 22 gradually decreasing from one end to the other end of the mating part 212 can provide support and guidance for the movable part 23. When the air pressure in the accommodating cavity is less than the external air pressure, the movable part 23 can move quickly toward the top of the cabinet door 10. When the air pressure in the accommodating cavity is greater than or equal to the external air pressure, the movable part 23 can form a tight fit with the mating part 212, improving the sealing performance.

[0039] Optionally, a sealing foam is provided between the mating part 212 and the movable part 23. Thus, when the movable part 23 is reset, the movable part 23 can form a tight fit with the sealing foam, ensuring that the through hole 22 is closed, improving the sealing performance between the movable part 23 and the mating part 212, preventing cold air leakage in the receiving cavity, and maintaining the temperature in the receiving cavity.

[0040] In this application, the part of the mating part 212 in the limiting member 21 that contacts the moving member 23 adopts a special non-perfect spherical structure, such as the surface of the mating part 212 that contacts the moving member 23 being a hemispherical surface. By optimizing the surface of the mating part 212 that contacts the moving member 23, the contact area between the mating part 212 and the moving member 23 is increased, which facilitates the moving member 23 and the mating part 212 to form a separable fit, increases the sealing performance during contact, and simplifies the processing technology of the limiting member 21 and reduces production costs.

[0041] According to some embodiments of this utility model, such as Figure 6 and Figure 7As shown, the refrigerator 100 includes: a first channel structure 30, which is disposed inside the cabinet door 10 and connected to the cabinet door 10 at the bottom; a moving part 23 is disposed inside the first channel structure 30; the first channel structure 30 includes an inlet 301 and an outlet 302; a limiting part 21 is disposed at the inlet 301; and the moving part 23 is configured to connect or disconnect the inlet 301 and the outlet 302.

[0042] The first channel structure 30 is connected to the bottom of the cabinet door 10. An inlet 301 is formed at the end of the first channel structure 30 away from the top of the cabinet door 10, and an outlet 302 is formed at the end of the first channel structure 30 adjacent to the top of the cabinet door 10. The limiting member 21 is located at the inlet 301 and is detachably connected to the first channel structure 30. When the moving member 23 is separated from the limiting member 21, the through hole 22 is opened, and the inlet 301 and the outlet 302 are connected. When the moving member 23 cooperates with the limiting member 21, the through hole 22 is closed, and the inlet 301 and the outlet 302 are not connected.

[0043] Therefore, by placing the limiting member 21 at the inlet 301, the inlet 301 and outlet 302 of the first channel structure 30 can be connected and disconnected by opening and closing the through hole 22 through the moving member 23. When the gas pressure in the receiving cavity is less than the external gas pressure, the through hole 22 is opened, and the inlet 301 and outlet 302 are connected. External gas can enter the first channel structure 30 through the inlet 301 and flow to the receiving cavity through the outlet 302, thereby balancing the pressure difference. When the gas pressure in the receiving cavity is greater than or equal to the external gas pressure, the through hole 22 is closed, and the inlet 301 and outlet 302 are not connected, thereby preventing the cold air in the receiving cavity from leaking to the outside from the inlet 301, effectively improving the sealing and reliability of the first channel structure 30.

[0044] According to some embodiments of this utility model, such as Figure 6 As shown, the first channel structure 30 has a guide sidewall 31, which is disposed opposite to the inlet 301 and extends obliquely from the inlet 301 to the outlet 302.

[0045] The guide sidewall 31 is positioned opposite the inlet 301 along the height of the cabinet door 10, and extends obliquely from the bottom to the top of the cabinet door 10 and from the inlet 301 to the outlet 302. Therefore, by providing the obliquely extending guide sidewall 31, the space occupied by the first channel structure 30 can be reduced. Simultaneously, the guide sidewall 31 can guide the flow of gas within the first channel structure 30, increasing the airflow velocity from the inlet 301 to the outlet 302 and accelerating the efficiency of balancing the pressure difference between the inside and outside of the refrigerator 100. The guide sidewall 31 can limit the movement height of the moving part 23, allowing it to quickly return to its original position when the pressure difference between the inside and outside of the refrigerator 100 is balanced.

[0046] According to some embodiments of this utility model, such as Figure 6 and Figure 7 As shown, the refrigerator 100 also includes a second channel structure 32, which is located inside the cabinet door 10 and connects the outlet 302 and the receiving cavity.

[0047] The second channel structure 32 is located near the bottom of the cabinet door 10 and is detachably connected to the cabinet door 10. The second channel structure 32 extends along the thickness direction of the cabinet door 10. One end of the second channel structure 32 near the cabinet body along the thickness direction of the cabinet door 10 is connected to the receiving cavity. The other end of the second channel structure 32 near the thickness direction of the cabinet door 10 is connected to the outlet 302. The gas in the first channel structure 30 can enter the second channel structure 32 through the outlet 302 and flow into the receiving cavity.

[0048] Therefore, by setting the second channel structure 32, it is convenient to connect the first channel structure 30 with the receiving cavity, optimize the internal structure of the cabinet door 10, reduce the complexity of the structure used to connect the through hole 22 with the receiving cavity, reduce costs, and at the same time, it can limit and position the first channel structure 30, thereby improving the installation efficiency of the first channel structure 30.

[0049] Optionally, the first channel structure 30 and the second channel structure 32 are made of plastic.

[0050] According to some embodiments of this utility model, such as Figures 7-10 As shown, the cabinet door 10 includes: a first housing 11 and a second housing 12. The first housing 11 has a mounting opening 111. The second housing 12 and the first housing 11 are arranged opposite to each other along the thickness direction of the cabinet door 10 and are connected to each other. A second channel structure 32 is disposed between the first housing 11 and the second housing 12. One end of the second channel structure 32 is connected to the first housing 11 at the mounting opening 111, and the other end of the second channel structure 32 is connected to the first channel structure 30.

[0051] The first housing 11 is located between the cabinet body and the second housing 12 along the thickness direction of the cabinet door 10. The mounting port 111 penetrates the first housing 11 along the thickness direction of the cabinet door 10. The second channel structure 32 is connected to the mounting port 111 at one end near the cabinet body along the thickness direction of the cabinet door 10, and connected to the outlet 302 of the first channel structure 30 at the other end away from the cabinet body along the thickness direction of the cabinet door 10.

[0052] Therefore, by forming an installation port 111 on the first housing 11, the second channel structure 32 can be connected to the receiving cavity through the installation port 111, so that the gas in the second channel structure 32 can enter the receiving cavity through the installation port 111 to balance the pressure difference between the receiving cavity of the refrigerator 100 and the outside. By connecting the two ends of the second channel structure 32 to the first housing 11 and the first channel structure 30 respectively, the stability and reliability of the second channel structure 32 can be improved.

[0053] Optionally, a sealing foam is provided between the second channel structure 32 and the end of the first channel structure 30 where the outlet 302 is provided, so as to improve the sealing between the outlet 302 of the first channel structure 30 and the second channel structure 32, prevent gas from flowing out from the gap at the connection between the outlet 302 of the first channel structure 30 and the second channel structure 32, and improve the efficiency of balancing the pressure difference.

[0054] According to some embodiments of this utility model, such as Figure 8 As shown, the first housing 11 has a sealing groove that extends circumferentially along the first housing 11; the refrigerator 100 also includes a seal 121, which is disposed in the sealing groove and at least part of the seal 121 covers the mounting opening 111.

[0055] Optionally, the sealing groove is located on the side of the first housing 11 away from the second housing 12 along the thickness direction of the cabinet door 10, that is, the sealing groove is located on the side of the first housing 11 adjacent to the cabinet body, and is provided on the first housing 11 near the edge of the first housing 11, extending circumferentially along the first housing 11. The sealing groove is formed by at least a portion of the side of the first housing 11 away from the second housing 12 being recessed towards the second housing 12 along the thickness direction of the cabinet door 10. The sealing groove is suitable for installing the sealing element 121, and at least a portion of the sealing element 121 near the bottom end of the cabinet door 10 covers part of the mounting opening 111. The end of the second channel structure 32 near the first housing 11 along the thickness direction of the cabinet door 10 communicates with the mounting opening 111 and forms a fit with the sealing element 121. The sealing element 121 can be sealing foam.

[0056] Therefore, by forming a sealing groove in the first housing 11, sufficient installation space is provided for the seal 121, reducing the space occupied by the seal 121 in the cabinet door 10 and improving the compactness of the cabinet door 10. At the same time, the seal 121 at least partially covers the mounting opening 111, simplifying the process difficulty of forming the mounting opening 111 and increasing the airtightness of the edge of the mounting opening 111. When the air pressure in the receiving cavity is balanced with the external air pressure, cold air leakage in the receiving cavity can be avoided, improving the sealing performance of the cabinet door 10 and improving the reliability of the refrigerator 100.

[0057] According to some embodiments of this utility model, the first channel structure 30 is detachably connected to the cabinet door 10. The first channel structure 30 and the cabinet door 10 can be fixed by screws or clips. Therefore, by detachably connecting the first channel structure 30 to the cabinet door 10, the installation and disassembly efficiency of the first channel structure 30 and the cabinet door 10 can be improved, facilitating the maintenance and replacement of the first channel structure 30 and enhancing operational convenience.

[0058] Optionally, the second channel structure 32 is detachably connected to the cabinet door 10. The second channel structure 32 and the cabinet door 10 can be fixed together using screws or clips. This detachable connection improves the installation and disassembly efficiency of the second channel structure 32 and the cabinet door 10, facilitates the maintenance and replacement of the second channel structure 32, and enhances operational convenience.

[0059] Optionally, the first channel structure 30 and the second channel structure 32 can be co-molded with the cabinet door 10, which can effectively improve the structural strength of the cabinet door 10, improve the connection strength between the first channel structure 30 and the second channel structure 32 and the cabinet door 10, and improve processing efficiency.

[0060] In this application, both the first channel structure 30 and the second channel structure 32 are detachably connected to the cabinet door 10. This further improves the assembly efficiency of the first channel structure 30 and the second channel structure 32.

[0061] According to a second aspect embodiment of the present invention, a refrigerator 100 includes: a cabinet body, a cabinet door 10, and a pressure differential balancing device 20. The cabinet body and the cabinet door 10 define a receiving cavity. The pressure differential balancing device 20 is disposed on the cabinet door 10 and is adapted to connect the receiving cavity and the outside. The pressure differential balancing device 20 includes: a channel assembly 24 and a moving member 23. The channel assembly 24 connects the receiving cavity and the outside. The moving member 23 is disposed within the channel assembly 24. The moving member 23 is configured to open the channel assembly 24 when the pressure in the receiving cavity is less than the external pressure; or, the moving member 23 is configured to close the channel assembly 24 when the pressure in the receiving cavity is greater than or equal to the external pressure.

[0062] The channel assembly 24 includes a first channel structure 30 and a second channel structure 32. A movable component 23 is disposed within the first channel structure 30. The movable component 23 can connect or disconnect the inlet 301 and outlet 302 of the first channel structure 30. When the user closes the cabinet door 10, the air in the cavity cools down and contracts rapidly, resulting in a negative pressure state in the cavity, making the pressure inside the cavity less than the external pressure. At this time, under the action of the external pressure, the movable component 23 is pushed upward, and the inlet 301 and outlet 302 of the first channel structure 30 are connected. External air enters the first channel structure 30 through the inlet 301, then enters the second channel structure 32, and finally enters the cavity until the air pressure inside the cavity gradually becomes the same as the external air pressure. When the air pressure inside the cavity is greater than or equal to the external air pressure, the movable component 23 automatically returns to the initial state. At this time, the inlet 301 and outlet 302 of the first channel structure 30 are not connected, and the interior of the refrigerator 100 is sealed, achieving pressure balance between the cavity of the refrigerator 100 and the outside.

[0063] In this application, by setting a differential pressure balancing device 20, the moving part 23 can open or close the channel assembly 24, quickly balancing the pressure difference between the refrigerator 100's cavity and the outside, improving the efficiency and reliability of balancing the pressure difference, and effectively reducing the resistance for users to open the cabinet door 10. By detachably connecting the differential pressure balancing device 20 to the bottom of the cabinet door 10, the integration and compactness of the refrigerator 100 can be improved without modifying the structure of the cabinet door 10, improving the installation and disassembly efficiency of the differential pressure balancing device 20, and improving its versatility. By setting sealing foam between the first channel structure 30 and the second channel structure 32, on the first housing 11, and between the mating part 212 and the moving part 23, the sealing performance of the refrigerator 100 is effectively improved, preventing cold air in the cavity from leaking to the outside, reducing the energy consumption of the refrigerator 100. At the same time, since the differential pressure balancing device 20 has a simple structure, it is easy to manufacture, assemble and maintain, which is conducive to large-scale promotion and reduces production costs.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0065] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0066] 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., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0067] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A refrigerator characterized by comprising: include: Cabinet; The cabinet door defines a receiving cavity; A differential pressure balancing device is provided on the cabinet door, and the differential pressure balancing device is adapted to connect the receiving cavity and the outside; The differential pressure balancing device includes: A limiting member, which cooperates with the cabinet door, has a through hole that connects the receiving cavity to the outside; A movable element is disposed at the through hole and configured to open or close the through hole.

2. The refrigerator according to claim 1, characterized in that, The movable element is configured such that the pressure within the receiving cavity is less than the external pressure, and the movable element opens the through hole; or... The movable element is configured such that the pressure within the receiving cavity is greater than or equal to the external pressure, and the movable element closes the through hole.

3. The refrigerator according to claim 1, characterized in that, The limiting component includes: A limiting part, which engages with the sidewall of the through hole; The mating part has one end connected to the end of the limiting part adjacent to the moving part, and the other end of the mating part extends along the height direction of the cabinet door in a direction away from the moving part. The through hole is provided on the mating part, and the cross-sectional area of ​​the through hole gradually decreases from one end of the mating part to the other end.

4. The refrigerator according to any one of claims 1-3, characterized in that, The refrigerator includes: A first channel structure is located inside the cabinet door and is connected to the bottom of the cabinet door. The movable component is disposed within the first channel structure, which includes an inlet and an outlet. The limiting component is disposed at the inlet, and the movable component is configured to connect or disconnect the inlet and the outlet.

5. The refrigerator according to claim 4, characterized in that, The first channel structure has a guide sidewall, which is disposed opposite to the inlet and extends obliquely from the inlet to the outlet.

6. The refrigerator according to claim 4, characterized in that, Also includes: The second channel structure is located inside the cabinet door and connects the outlet and the receiving cavity.

7. The refrigerator according to claim 6, characterized in that The cabinet door includes: A first housing, wherein the first housing has a mounting opening; The second housing and the first housing are arranged opposite to each other along the thickness direction of the cabinet door and connected to each other. The second channel structure is disposed between the first housing and the second housing. One end of the second channel structure is connected to the first housing at the mounting port, and the other end of the second channel structure is connected to the first channel structure.

8. The refrigerator according to claim 7, characterized in that, The first housing has a sealing groove that extends circumferentially along the first housing. It also includes: a seal, the seal being disposed within the sealing groove, at least a portion of the seal covering a portion of the mounting opening.

9. The refrigerator according to claim 6, characterized in that, The first channel structure is detachably connected to the cabinet door; and / or, The second channel structure is detachably connected to the cabinet door.

10. A refrigerator characterized by comprising: include: Cabinet; The cabinet door defines a receiving cavity; A differential pressure balancing device is provided on the cabinet door, and the differential pressure balancing device is adapted to connect the receiving cavity and the outside; The differential pressure balancing device includes: Channel assembly, the channel assembly connecting the receiving cavity and the outside; A movable element, the movable element being disposed within the channel assembly; The moving member is configured to open the passage assembly when the pressure in the accommodation cavity is less than the external pressure; or, The moving member is configured to close the passage assembly when the pressure in the accommodation cavity is greater than or equal to the external pressure.

Images