Refrigerator

Abstract

The utility model relates to a refrigerator. The refrigerator comprises a refrigerator body and a refrigerator cover, a refrigerating return air inlet is formed in the outer wall of the refrigerating box liner, and a freezing return air inlet is formed in the outer wall of the freezing box liner; the evaporation bin is formed in the freezing box liner; the freezing return air inlet communicates with the evaporation bin; one end of the air return cover covers the outer wall of the refrigerating box liner, and the other end of the air return cover covers the outer wall of the freezing box liner; an air return cavity is defined by the air return cover and the outer walls of the refrigerating box liner and the freezing box liner; the other end of the air return cavity is communicated with the freezing air return opening; air in the refrigerating chamber can enter the air return cavity through the refrigerating air return opening and then return into the evaporation bin through the freezing air return opening, and the refrigerating air return function is achieved. According to the scheme, the thicknesses of the air return cavity and the air return cover can be reduced, and the requirement for the thickness of the foaming layer can be lowered. The air return cover in the scheme can reduce the occupation of the internal space of the box body. The air return structure can be simplified, the installation mode is simplified, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator. Background Art

[0002] A refrigerator is a container that uses the phase change of a refrigerant to generate a low-temperature environment for storing food materials, and is one of the indispensable household appliances in people's home life. With the improvement of people's living standards, the requirements for refrigerators are also getting higher and higher.

[0003] In related single-system air-cooled refrigerators, the refrigerator usually includes a box body and a refrigerating box liner and a freezing box liner arranged in the box body. A refrigerating chamber is formed in the refrigerating box liner, and a freezing chamber is formed in the freezing box liner. The evaporator and the freezing air duct assembly are usually installed on the back of the freezing chamber, and the cold air of the evaporator can be conveyed into the freezing chamber through the freezing air duct assembly for refrigeration. A refrigerating air duct assembly is arranged on the back of the refrigerating chamber. The cold air needs to be conveyed to the refrigerating air duct assembly through the freezing air duct assembly and then conveyed into the refrigerating chamber for refrigeration.

[0004] Currently, in the existing single-system air-cooled refrigerators, it is usually necessary to set a refrigerating chamber air return opening on the back of the refrigerating box liner, a freezing air return opening on the back of the freezing box liner, and a separate air return pipe in the foaming layer. The two ends of the air return pipe need to be respectively docked and communicated with the refrigerating chamber air return opening and the freezing air return opening, so that the air in the refrigerating chamber can return to the evaporator through the freezing air return opening to be cooled again, forming a cycle of refrigerating air supply and return. This solution requires a relatively large thickness of the foaming layer, occupies a large space, and has a relatively high cost. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a refrigerator to optimize the air return structure of the refrigerator in the related technology so as to reduce the requirement for the thickness of the foaming layer.

[0006] The purpose of the utility model can also be to provide a refrigerator to optimize the air return structure of the refrigerator in the related technology so as to reduce the space occupied by the air return structure.

[0007] The purpose of the utility model can also be to provide a refrigerator to optimize the air return structure of the refrigerator in the related technology so as to reduce the cost.

[0008] To solve the above technical problems, the utility model adopts the following technical solutions:

[0009] According to one aspect of the present utility model, the present utility model provides a refrigerator, which includes: a cabinet body forming the outer shell of the refrigerator; a refrigerating liner and a freezing liner, which are arranged adjacent to each other in the cabinet body; a refrigerating chamber is formed in the refrigerating liner, and a freezing chamber is formed in the freezing liner; a refrigerating air return opening is provided on the outer wall of the refrigerating liner, and the refrigerating air return opening communicates with the refrigerating chamber; a freezing air return opening is formed on the outer wall of the freezing liner; an evaporation chamber is formed in the freezing liner, and the evaporation chamber is separated from the freezing chamber; an evaporator is provided in the evaporation chamber; the freezing air return opening communicates with the evaporation chamber; an air return cover, one end of which covers the outer wall of the refrigerating liner, and the other end of which covers the outer wall of the freezing liner; wherein, a return air cavity is formed between the air return cover and the outer walls of the refrigerating liner and the freezing liner; one end of the return air cavity communicates with the refrigerating air return opening, and the other end of the return air cavity communicates with the freezing air return opening; the air in the refrigerating chamber can enter the return air cavity through the refrigerating air return opening, and then return to the evaporation chamber through the freezing air return opening.

[0010] In some embodiments of the present application, the refrigerating air return opening is provided on the rear wall of the refrigerating liner, and the freezing air return opening is provided on the rear wall of the freezing liner; the air return cover covers the rear walls of the refrigerating liner and the freezing liner, and the return air cavity is formed between the air return cover and the rear walls of the refrigerating liner and the freezing liner.

[0011] In some embodiments of the present application, the air return cover includes a housing and a partition; one side of the housing has an opening, and the return air cavity is located inside the housing; the partition is provided at the opening of the housing and divides the opening of the housing into a first opening area and a second opening area; one end of the housing covers the outer wall of the refrigerating liner, so that the first opening area is attached to the outer wall of the refrigerating liner, and one end of the return air cavity communicates with the refrigerating air return opening through the first opening area; the other end of the housing covers the outer wall of the freezing liner, so that the second opening area is attached to the outer wall of the freezing liner, and the other end of the return air cavity communicates with the freezing air return opening through the second opening area.

[0012] In some embodiments of the present application, the refrigerator includes a sealing member, at least part of which is clamped between the housing and the outer wall of the refrigerating liner and is hermetically surrounded on the periphery of the first opening area; at least part of the sealing member is clamped between the housing and the outer wall of the freezing liner and is hermetically surrounded on the periphery of the second opening area.

[0013] In some embodiments of the present application, the seal includes a sealing ring, a first partition strip, and a second partition strip; the sealing ring is annular; the first partition strip and the second partition strip are arranged at intervals within the sealing ring to divide the interior of the sealing ring into a first sealing ring, a second sealing ring, and a third sealing ring; the first sealing ring is arranged around the peripheral side edge of the first opening area; the second sealing ring is arranged around the peripheral side edge of the partition plate; the third sealing ring is arranged around the peripheral side edge of the second opening area.

[0014] In some embodiments of the present application, the air return cover includes a first support rib, the first support rib is arranged in the air return cavity, one side of the first support rib abuts against the inner wall of the housing, and the other side of the first support rib abuts against the partition plate.

[0015] In some embodiments of the present application, the air return cover includes a second support rib, the second support rib is arranged in the air return cavity, and the second support rib extends from the inner wall of the housing towards the second opening area; when the air return cover covers the outer wall of the freezing inner container, the second support rib can abut against the outer wall of the freezing inner container.

[0016] In some embodiments of the present application, a clamping block protrudes from the outer wall of the refrigerating inner container, and the clamping block is arranged on one side of the refrigerating air return opening; a clamping groove is formed on one side of the housing, and the clamping groove is located on one side of the first opening area; when the housing covers the outer wall of the refrigerating inner container, the clamping block can be clamped with the clamping groove.

[0017] In some embodiments of the present application, a positioning post protrudes from the outer wall of the refrigerating inner container, and the positioning post and the clamping block are respectively arranged on opposite sides of the refrigerating air return opening; a positioning groove is formed on the side wall of the housing away from the clamping groove, and the positioning groove and the clamping groove are respectively arranged on opposite sides of the first opening area; when one end of the housing covers the outer wall of the refrigerating inner container, the positioning post can be clamped with the positioning groove.

[0018] In some embodiments of the present application, a limiting rib protrudes from the outer wall of the freezing inner container, and the limiting rib extends along at least part of the side edge of the housing; when the housing covers the outer wall of the freezing inner container, at least part of the side edge of the housing can abut against the limiting rib to position the housing on the outer wall of the freezing inner container.

[0019] In some embodiments of the present application, a heating plate and a heating wire are arranged on the outer wall of the air return cover, the heating plate is attached to the outer wall of the housing, and the heating wire is laid on the outer wall of the heating plate.

[0020] The embodiments of the present utility model have the following advantages and positive effects:

[0021] In the refrigerator of the embodiment of the present utility model, a refrigerating air return opening is provided on the outer wall of the refrigerating liner, and a freezing air return opening is provided on the outer wall of the freezing liner. The return air hood is arranged on the outer walls of the refrigerating liner and the freezing liner, so that a return air cavity can be formed between the return air hood and the outer walls of the refrigerating liner and the freezing liner. The two ends of the return air cavity can communicate with the refrigerating air return opening and the freezing air return opening, so that the air in the refrigerating chamber can return to the evaporation chamber through the refrigerating air return opening, the return air cavity and the freezing air return opening, realizing the refrigerating air return function. This solution can reduce the thickness of the return air cavity and the return air hood, and thus can reduce the thickness requirement for the foaming layer. The return air hood of this solution can reduce the occupation of the internal space of the box body. The return air hood of this solution can simplify the return air structure and the installation method, and thus can reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present utility model.

[0023] Figure 2 is Figure 1 the front view of

[0024] Figure 3 is Figure 1 the schematic structural diagram of the interior of the box body in

[0025] Figure 4 is Figure 3 the schematic structural diagram from another perspective.

[0026] Figure 5 is Figure 4 the partial schematic structural diagram from another perspective.

[0027] Figure 6 is Figure 5 the enlarged partial schematic structural diagram of

[0028] Figure 7 is Figure 6 the exploded schematic diagram of

[0029] Figure 8 is Figure 7 the schematic structural diagram of the return air hood in

[0030] Figure 9 is Figure 8 the exploded schematic diagram of

[0031] Figure 10 is Figure 9 the schematic structural diagram of the housing and the seal from another perspective in

[0032] Figure 11 isFigure 10 Exploded view diagram.

[0033] Figure 12 is Figure 11 Schematic diagram of the structure of the seal in

[0034] Explanation of reference numerals: 1, box body; 11, press chamber; 12, air duct foam; 2, refrigerated box liner; 20, refrigerating chamber; 21, refrigerating return air opening; 22, clamping block; 23, positioning post; 3, freezing box liner; 30, freezing chamber; 31, freezing return air opening; 32, limiting rib; 321, first limiting part; 322, second limiting part; 4, return air hood; 40, return air cavity; 41, housing; 411, first opening area; 412, second opening area; 413, clamping groove; 414, positioning groove; 42, partition board; 43, first support rib; 44, second support rib; 45, seal; 451, sealing ring; 4511, first sealing ring; 4512, second sealing ring; 4513, third sealing ring; 452, first dividing strip; 453, second dividing strip; 5, heating plate; 6, heating wire. Detailed implementation manners

[0035] Typical implementation manners that embody the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present utility model.

[0036] In the description of the present application, 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", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0038] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] Currently, in existing single-system air-cooled refrigerators, it is usually necessary to set a cold storage return air inlet on the back of the cold storage liner, a freezer return air inlet on the back of the freezer liner, and a separate return air duct in the foam layer. Both ends of the return air duct need to be respectively docked and communicated with the cold storage return air inlet and the freezer return air inlet, so that the air in the cold storage can return to the evaporator through the freezer return air inlet to be cooled again, forming a cycle of cold storage air supply and return air. This solution requires a relatively large thickness of the foam layer, occupies a large space, and has a relatively high cost.

[0040] For the convenience of description, unless otherwise specified, the orientation descriptions of up, down, left, right, front, and back in this article are all referenced based on the state when the refrigerator is in use. The door of the refrigerator is the front, and the opposite direction is the back. The vertical direction is the up-down direction, and the horizontal direction is the left-right direction.

[0041] Figure 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention. Figure 2 is Figure 1 front view of Figure 3 is Figure 1 schematic structural diagram of the interior of the middle box body 1 in

[0042] Please refer to Figures 1 to 3 As shown, the refrigerator provided by the embodiment of the present invention may include a box body 1. The box body 1 may adopt a cuboid hollow structure. It can be understood that in other embodiments, the box body 1 may also adopt a hollow shell 41 structure of other shapes.

[0043] In some embodiments, a storage compartment may be formed inside the box body 1. The storage compartment can be used as an independent storage space for use as a cold storage compartment 20, a variable temperature compartment, a freezer compartment 30, etc., to meet different storage requirements such as refrigeration and freezing according to different types of stored items.

[0044] In some embodiments, a plurality of storage compartments may be provided inside the box body 1. The plurality of storage compartments may be arranged in the box body 1 with upper and lower partitions or left and right partitions.

[0045] Please refer to Figures 1 to 3As shown, in some embodiments, a door (not shown in the figure) may be provided on the front side of the cabinet 1. The door can be used to open and close the storage compartment. The door and the cabinet 1 may be connected by a hinge so that the door of the refrigerator can rotate around the axis of the hinge to open and close the door of the refrigerator, and thus open and close the corresponding storage compartment.

[0046] In some embodiments, multiple doors may be provided. The multiple doors may be provided in one-to-one correspondence with multiple storage compartments. It should be noted that in other embodiments, multiple doors may also open and close one storage compartment simultaneously.

[0047] Please refer to Figure 3 As shown, in some embodiments, a liner may be provided inside the cabinet 1. The storage compartment may be formed inside the liner. Multiple liners may be provided inside the cabinet 1. The multiple liners may be arranged in the cabinet 1 with upper and lower separation or left and right separation. One or more storage compartments may be formed inside each liner.

[0048] Please refer to Figures 1 to 3 As shown, in some embodiments, the multiple storage compartments inside the cabinet 1 may include a refrigerating compartment 20. A refrigerating door (not shown in the figure) may be provided on the front side of the refrigerating compartment 20. The refrigerating door may be arranged on the front wall of the cabinet. The refrigerating door can be used to open and close the refrigerating compartment 20 together.

[0049] In some embodiments, the multiple storage compartments inside the cabinet 1 may include a freezing compartment 30. The freezing compartment 30 may be provided below the refrigerating compartment 20 at intervals. The refrigerating compartment 20 and the freezing compartment 30 may be arranged with upper and lower separation. A freezing door (not shown in the figure) may be provided on the front side of the freezing compartment 30. The freezing door may be arranged on the front wall of the cabinet. The freezing door can be used to open and close the freezing compartment 30.

[0050] Figure 4 is Figure 3 A schematic structural diagram from another perspective. Figure 5 is Figure 4 A partial structural schematic diagram from another perspective.

[0051] Please refer to Figures 3 to 5 As shown, in some embodiments, two liners may be provided inside the cabinet 1. The two liners may be respectively a refrigerating liner 2 and a freezing liner 3. The refrigerating liner 2 and the freezing liner 3 may be arranged adjacent to each other vertically. The refrigerating compartment 20 may be formed inside the refrigerating liner 2. The freezing compartment 30 may be formed inside the freezing liner 3. The freezing liner 3 may be arranged below the refrigerating liner 2 so that the freezing compartment 30 can be arranged at intervals below the bottom of the refrigerating compartment 20.

[0052] Please refer to Figures 1 to 5As shown, in some embodiments, a refrigeration system may be provided inside the cabinet 1. The refrigeration system may be disposed inside the cabinet 1. The refrigeration system may be used to provide cold air inside the refrigerator to maintain a low-temperature environment in each storage compartment.

[0053] In some embodiments, the refrigeration system may include a compressor (not shown in the figure). The compressor may compress the refrigerant and compress it into a high-temperature and high-pressure refrigerant vapor.

[0054] In some embodiments, the refrigeration system may include a condenser (not shown in the figure). The compressor may deliver the compressed refrigerant into the condenser. The condenser may condense the high-temperature and high-pressure refrigerant vapor.

[0055] In some embodiments, the refrigeration system may include a throttling device (not shown in the figure). The condenser may deliver the condensed refrigerant into the throttling device. The throttling device may employ a capillary tube. The throttling device may be used to throttle down the pressure of the refrigerant.

[0056] In some embodiments, the refrigeration system may include an evaporator (not shown in the figure). The throttling device may deliver the refrigerant with reduced pressure into the evaporator. The evaporator may be used for the refrigerant vapor to evaporate and boil, so as to absorb the heat of the surrounding medium.

[0057] In some embodiments, the compressor, the condenser, the throttling device, and the evaporator may be connected in sequence to form a refrigeration circuit. The refrigerant may circulate inside the refrigeration circuit to achieve refrigeration inside the cabinet 1.

[0058] Please refer to Figures 1 to 4 As shown, in some embodiments, a compressor compartment 11 may be provided inside the cabinet 1. The compressor compartment 11 may be disposed in the bottom area inside the cabinet 1. The compressor compartment 11 may be located below the rear side of the storage compartment. The compressor compartment 11 may be located below the rear side of the freezer liner 3. The compressor, the condenser, etc. may be disposed inside the compressor compartment 11. When the compressor and the condenser are working, they will respectively dissipate heat, causing the temperature inside the compressor compartment 11 to rise.

[0059] It should be noted that in some other embodiments, the compressor compartment 11 may also be disposed at other positions inside the cabinet 1.

[0060] Please refer to Figures 1 to 3 As shown, in some embodiments, an evaporation compartment (not shown in the figure) may be provided inside the cabinet 1. The evaporator may be disposed inside the evaporation compartment. The evaporation compartment may be disposed inside the freezer liner 3. The evaporation compartment may be separated from the freezer compartment 30. The evaporator may be used to absorb the heat inside the evaporation compartment, causing a large amount of cold air to be formed inside the evaporation compartment. When the cold air is delivered into each storage compartment, the low-temperature storage function in the freezer compartment 30 and the refrigerator compartment 20 can be achieved.

[0061] In some embodiments, a refrigerating air duct assembly (not shown in the figure) may be provided inside the cabinet 1. The refrigerating air duct assembly may be disposed inside the refrigerating cabinet liner 3. An evaporation chamber may be formed between the refrigerating air duct assembly and the inner wall inside the refrigerating cabinet liner 3.

[0062] In some embodiments, a refrigerating air supply duct (not shown in the figure) may be formed inside the refrigerating air duct assembly. The refrigerating air supply duct may communicate with the evaporation chamber and the refrigerating chamber 30 to deliver cold air into the refrigerating chamber 30, thereby realizing the refrigerating function inside the refrigerating chamber 30.

[0063] In some embodiments, the refrigerating air duct assembly may be disposed on the back side of the refrigerating chamber 30. The refrigerating chamber 30 may be formed on the front side of the refrigerating air duct assembly. An evaporation chamber may be formed between the back side of the refrigerating air duct assembly and the rear wall inside the first cabinet liner 2.

[0064] It should be noted that in other embodiments, the refrigerating air duct assembly may also be disposed on other side walls inside the refrigerating cabinet liner 3. Correspondingly, an evaporation chamber may be formed between the refrigerating air duct assembly and other inner walls inside the refrigerating cabinet liner 3.

[0065] Please refer to Figures 1 to 5 As shown, in some embodiments, a refrigerating air supply opening (not shown in the figure) may be formed on the front wall of the refrigerating air duct assembly. The refrigerating air supply opening may communicate with the refrigerating air supply duct and the refrigerating chamber 30. The cold air in the evaporation chamber can be delivered into the refrigerating chamber 30 through the refrigerating air supply duct and the refrigerating air supply opening, realizing refrigeration inside the refrigerating chamber 30.

[0066] In some embodiments, a plurality of refrigerating air supply openings may be formed on the front wall of the refrigerating air duct assembly. The plurality of refrigerating air supply openings are arranged at intervals on the front wall of the refrigerating air duct assembly. The cold air in the refrigerating air supply duct can be delivered into the refrigerating chamber 30 through the plurality of refrigerating air supply openings, improving the refrigerating efficiency and refrigerating uniformity of the refrigerating chamber 30. It should be noted that the number of the refrigerating air supply openings can be adjusted as needed and is not limited herein.

[0067] In some embodiments, a refrigerating air return duct (not shown in the figure) may be provided inside the refrigerating cabinet liner 3. The refrigerating air return duct may be disposed between the refrigerating air duct assembly and the inner wall of the refrigerating cabinet liner 3. One end of the refrigerating air return duct may communicate with the refrigerating chamber 30. The other end of the refrigerating air return duct may communicate with the evaporation chamber. When the cold air in the evaporation chamber is delivered into the refrigerating chamber 30 through the refrigerating air supply duct and the refrigerating air supply openings, the air inside the refrigerating chamber 30 can return to the evaporation chamber through the refrigerating air return duct, return to the evaporator, and be recooled by the evaporator to form cold air, thereby realizing the cycle of refrigerating air supply and refrigerating air return.

[0068] In some embodiments, the refrigerated return air duct can be disposed between the refrigerated duct assembly and the rear wall of the refrigerated cabinet 3. It should be noted that, in other embodiments, the refrigerated return air duct can also be disposed between the refrigerated duct assembly and other side walls of the refrigerated cabinet 3.

[0069] Please refer to Figures 1 to 5 As shown, in some embodiments, a refrigerated duct assembly (not shown in the figure) can be provided in the cabinet 1. The refrigerated duct assembly can be disposed in the refrigerated cabinet 2. A refrigerated air supply duct (not shown in the figure) can be formed in the refrigerated duct assembly. The refrigerated air supply duct can communicate with the evaporation chamber and the refrigerating chamber 20, and convey the cold air in the evaporation chamber to the refrigerating chamber 20, thereby realizing the refrigeration function in the refrigerating chamber 20.

[0070] In some embodiments, the refrigerated duct assembly can be disposed on the back side of the refrigerating chamber 20. The refrigerating chamber 20 can be formed on the front side of the refrigerated duct assembly. It should be noted that, in other embodiments, the refrigerated duct assembly can also be disposed on other side walls in the refrigerated cabinet 3.

[0071] In some embodiments, the refrigerated air supply duct can communicate with the refrigerated air supply duct, so that the refrigerated air supply duct can communicate with the evaporation chamber through the refrigerated air supply duct.

[0072] Please refer to Figures 1 to 5 As shown, in some embodiments, a duct foam 12 can be provided between the rear walls of the refrigerated cabinet 2 and the refrigerated cabinet 3. A connecting channel (not shown in the figure) communicating the refrigerated air supply duct and the refrigerated air supply duct can be provided in the duct foam 12. A damper (not shown in the figure) can be provided in the duct foam 12. The damper can be disposed in the connecting channel. The damper can be used to open and close the connecting channel, and thus can open and close the refrigerated air supply duct.

[0073] Please refer to Figures 1 to 5 As shown, in some embodiments, a refrigerated air supply opening (not shown in the figure) can be formed on the front wall of the refrigerated duct assembly. The refrigerated air supply opening can communicate the refrigerated air supply duct and the refrigerating chamber 20, that is, the refrigerated air supply opening can communicate the refrigerated air supply duct and the refrigerating chamber 20. The cold air in the evaporation chamber can be conveyed into the refrigerating chamber 20 through the refrigerated air supply duct and the refrigerated air supply opening to realize refrigeration in the refrigerating chamber 20.

[0074] In some embodiments, a plurality of refrigerated air supply openings can be formed on the front wall of the refrigerated duct assembly. The plurality of refrigerated air supply openings are spaced apart on the front wall of the refrigerated duct assembly. The cold air in the refrigerated air supply duct can be conveyed into the refrigerating chamber 20 through the plurality of refrigerated air supply openings, improving the refrigeration efficiency and refrigeration uniformity of the refrigerating chamber 20. It should be noted that the number of the refrigerated air supply openings can be adjusted as needed and is not limited herein.

[0075] Please refer to Figures 1 to 5As shown, in some embodiments, a foaming layer (not shown in the figure) may be provided between the outer wall of the refrigerating chamber liner 2 and the inner wall of the cabinet 1. The foaming layer can achieve the heat insulation performance between the inside of the refrigerating chamber liner 2 and the refrigerating chamber 20.

[0076] In some embodiments, a foaming layer may be provided between the outer wall of the freezing chamber liner 3 and the inner wall of the cabinet 1. The foaming layer can achieve the heat insulation performance between the inside of the freezing chamber liner 3 and the freezing chamber 30.

[0077] Figure 6 is Figure 5 a partial enlarged structural schematic diagram of. Figure 7 is Figure 6 an exploded schematic diagram of. Figure 8 is Figure 7 the structural schematic diagram of the return air hood 4 in.

[0078] Please refer to Figures 3 to 8 As shown, in some embodiments, the refrigerator may include a return air hood 4. A refrigerating return air opening 21 may be formed in the outer wall of the refrigerating chamber liner 2. The refrigerating return air opening 21 may communicate with the refrigerating chamber 20. A freezing return air opening 31 may be formed in the outer wall of the freezing chamber liner 3. The freezing return air opening 31 may communicate with the evaporation chamber. The return air hood 4 may be disposed inside the cabinet 1. One end of the return air hood 4 may cover the outer wall of the refrigerating chamber liner 2 and may cover the refrigerating return air opening 21. The other end of the return air hood 4 may cover the outer wall of the freezing chamber liner 3 and may cover the freezing return air opening 31. A return air cavity 40 may be formed between the return air hood 4 and the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3. One end of the return air cavity 40 may communicate with the refrigerating return air opening 21. The refrigerating return air opening 21 may communicate with the refrigerating chamber 20 and the return air cavity 40. The other end of the return air cavity 40 may communicate with the freezing return air opening 31. The freezing return air opening 31 may communicate with the evaporation chamber and the return air cavity 40.

[0079] When the cold air in the evaporation chamber is transported into the refrigerating chamber 20 through the refrigerating air supply duct, the air in the refrigerating chamber 20 can enter the return air cavity 40 through the refrigerating return air opening 21, and then return to the evaporation chamber through the freezing return air opening 31, return to the evaporator, and be re-cooled by the evaporator to form cold air, thereby realizing the cycle of refrigerating air supply and freezing air return.

[0080] It should be noted that the return air hood 4 can be installed on the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3 before the cabinet 1 is filled with the foaming layer. There is no need to arrange additional return air pipelines inside the foaming layer. This solution can reduce the thickness of the return air cavity 40 and the return air hood 4, and thus can reduce the thickness requirement for the foaming layer. The return air hood 4 of this solution can reduce the occupation of the internal space of the cabinet 1. The return air hood 4 of this solution can simplify the return air structure and the installation method, and thus can reduce the cost.

[0081] In some embodiments, the return air hood 4 may adopt a flat shell-like structure. The return air cavity 40 may be a flat cavity structure. Therefore, this solution is beneficial to reducing the thickness of the return air cavity 40 and the return air hood 4, and thus can reduce the thickness requirement for the foaming layer.

[0082] In some embodiments, the return air hood 4 may be disposed over the rear walls of the freezer liner 3 and the refrigerator liner 2. The refrigerator return air inlet 21 may be disposed on the rear wall of the refrigerator liner 2. The freezer return air inlet 31 may be disposed on the rear wall of the freezer liner 3. The return air cavity 40 may be formed between the return air hood 4 and the rear walls of the refrigerator liner 2 and the freezer liner 3.

[0083] It should be noted that in other embodiments, the return air hood 4 may also be disposed over other outer walls of the freezer liner 3 and the refrigerator liner 2. Correspondingly, the return air cavity 40 may be formed between the return air hood 4 and other outer walls of the refrigerator liner 2 and the freezer liner 3.

[0084] Figure 9 is Figure 8 a partial decomposition schematic diagram of.

[0085] Please refer to Figures 6 to 9 As shown, in some embodiments, a heating plate 5 may be disposed on the outer wall of the return air hood 4. The heating plate 5 may be attached to the outer wall of the return air hood 4 away from the freezer liner 3. The heating plate 5 can heat the return air hood 4, and thus heat the return air cavity 40, so as to prevent ice formation in the return air cavity 40 from blocking the return air cavity 40, effectively ensuring the smoothness of the return air cavity 40, ensuring that the air resistance in the return air cavity 40 is small, and being beneficial to improving the refrigerator return air efficiency and the refrigerator refrigeration effect.

[0086] In some embodiments, a heating wire 6 may be disposed on the outer wall of the return air hood 4. The heating wire 6 may be laid on the outer wall of the return air hood 4 away from the freezer liner 3. The heating wire 6 can heat the return air hood 4, and thus heat the return air cavity 40, so as to prevent ice formation in the return air cavity 40 from blocking the return air cavity 40, effectively ensuring the smoothness of the return air cavity 40, ensuring that the air resistance in the return air cavity 40 is small, and being beneficial to improving the refrigerator return air efficiency and the refrigerator refrigeration effect.

[0087] In some embodiments, the heating wire 6 may be laid on the outer wall of the heating plate 5. The heating wire 6 can heat the heating plate 5 to make the heating plate 5 generate heat, and then heat the return air hood 4 through the heating plate 5.

[0088] It should be noted that in some other embodiments, the heating wire 6 may also be directly laid on the outer wall of the return air hood 4.

[0089] Figure 10 is Figure 9 a schematic structural diagram of the housing 41 and the seal 45 in another perspective in. Figure 11 is Figure 10A schematic diagram of the decomposition.

[0090] Please refer to Figures 6 to 11 As shown, in some embodiments, the return air hood 4 may include a housing 41. The housing 41 may adopt a flat shell-like structure. The housing 41 may be disposed over the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3. An opening is formed on the side of the housing 41 facing the refrigerating chamber liner 2 and the freezing chamber liner 3. A return air cavity 40 may be formed inside the housing 41. The return air cavity 40 may be formed between the housing 41 and the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3.

[0091] Please refer to Figures 6 to 11 As shown, in some embodiments, the return air hood 4 may include a partition 42. The partition 42 may be in a plate-like structure. The partition 42 may be disposed at the opening of the housing 41. The partition 42 may divide the opening of the housing 41 into a first opening area 411 and a second opening area 412.

[0092] In some embodiments, when the return air hood 4 is disposed over the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3, one end of the housing 41 may be disposed over the outer wall of the refrigerating chamber liner 2, such that the first opening area 411 may be attached to the outer wall of the refrigerating chamber liner 2. The first opening area 411 and the refrigerating return air opening 21 may be arranged opposite to each other, such that one end of the return air cavity 40 may communicate with the refrigerating return air opening 21 through the first opening area 411.

[0093] In some embodiments, when the return air hood 4 is disposed over the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3, the other end of the housing 41 may be disposed over the outer wall of the freezing chamber liner 3, such that the second opening area 412 may be attached to the outer wall of the freezing chamber liner 3. The second opening area 412 and the freezing return air opening 31 may be arranged opposite to each other, such that the other end of the return air cavity 40 may communicate with the freezing return air opening 31 through the second opening area 412.

[0094] Please refer to Figures 6 to 11 As shown, in some embodiments, when the return air hood 4 is disposed over the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3, the partition 42 may be supported between the outer walls of the refrigerating chamber liner 2 and the freezing chamber liner 3. One end of the partition 42 may abut against the outer wall of the refrigerating chamber liner 2. The other end of the partition 42 may abut against the outer wall of the freezing chamber liner 3.

[0095] Please refer to Figures 6 to 11 As shown, in some embodiments, the area of the housing 41 disposed over the outer wall of the freezing chamber liner 3 may be larger than the area of the housing 41 disposed over the outer wall of the refrigerating chamber liner 2. At this time, the area of the second opening area 412 may be larger than the area of the first opening area 411. The volume of the return air cavity 40 in the area of the outer wall of the freezing chamber liner 3 may be larger than the volume of the return air cavity 40 in the area of the outer wall of the refrigerating chamber liner 2.

[0096] In some embodiments, the size of the freezing air return opening 31 can be larger than that of the refrigerating air return opening 21, which can ensure smooth air return in the air return cavity 40.

[0097] In some embodiments, the size of the freezing air return opening 31 can be 1.2 times that of the refrigerating air return opening 21.

[0098] Please refer to Figures 6 to 11 As shown, in some embodiments, the air return cover 4 can include a first support rib 43. The first support rib 43 can be disposed in the air return cavity 40. The first support rib 43 can be disposed between the housing 41 and the partition 42. One side of the first support rib 43 can abut against the inner wall of the housing 41, and the other side of the first support rib 43 can abut against the partition 42. The first support rib 43 can ensure the structural strength between the partition 42 and the housing 41, and can prevent the air return cover 4 from deforming during the foaming process.

[0099] In some embodiments, the air return cover 4 can include a second support rib 44. The second support rib 44 can be disposed in the air return cavity 40. The second support rib 44 can be exposed in the second opening area 412. The second support rib 44 can extend from the inner wall of the housing 41 towards the second opening area 412. When the air return cover 4 is sleeved on the outer wall of the freezing cabinet liner 3, one end of the second support rib 44 can abut against the inner wall of the housing 41, and the other end of the second support rib 44 can abut against the outer wall of the freezing cabinet liner 3. The second support rib 44 can ensure the structural strength between the housing 41 and the outer wall of the freezing cabinet liner 3, and can prevent the air return cover 4 from deforming during the foaming process.

[0100] In some embodiments, multiple second support ribs 44 can be provided. The multiple second support ribs 44 can be spaced apart and disposed in the air return cavity 40.

[0101] It should be noted that in some other embodiments, the second support rib 44 can also be disposed at the first opening area 411. The second support rib 44 can be exposed in the first opening area 411. The second support rib 44 can extend from the inner wall of the housing 41 towards the first opening area 411. When the air return cover 4 is sleeved on the outer wall of the refrigerating cabinet liner 2, one end of the second support rib 44 can abut against the inner wall of the housing 41, and the other end of the second support rib 44 can abut against the outer wall of the refrigerating cabinet liner 2.

[0102] Figure 12 is Figure 11 a schematic structural view of the seal 45.

[0103] Please refer to Figures 10 to 12As shown, in some embodiments, the refrigerator may include a seal 45. The seal 45 may be clamped between the outer walls of the housing 41 and the refrigerating liner 2 and the freezing liner 3 to seal the gap between the housing 41 and the outer walls of the refrigerating liner 2 and the freezing liner 3, and thus the return air cavity 40 can be sealed.

[0104] In some embodiments, when the return air cover 4 is disposed on the outer wall of the refrigerating liner 2, at least a part of the seal 45 may be clamped between the housing 41 and the outer wall of the refrigerating liner 2, and at least a part of the seal 45 may have a sealing ring 451 wound around the circumferential side of the first opening area 411, so as to seal the gap between the housing 41 and the outer wall of the refrigerating liner 2, and thus the return air cavity 40 can be sealed.

[0105] In some embodiments, when the return air cover 4 is disposed on the outer wall of the freezing liner 3, at least a part of the seal 45 may be clamped between the housing 41 and the outer wall of the freezing liner 3, and at least a part of the seal 45 may have a sealing ring 451 wound around the circumferential side of the second opening area 412, so as to seal the gap between the housing 41 and the outer wall of the refrigerating liner 2, and thus the return air cavity 40 can be sealed.

[0106] Please refer to Figures 10 to 12 As shown, in some embodiments, the seal 45 may include a sealing ring 451. The sealing ring 451 may be annular. The sealing ring 451 may be disposed around the circumferential side edge of the side wall of the housing 41 facing the refrigerating liner 2 and the freezing liner 3, and thus the return air cavity 40 can be sealed.

[0107] In some embodiments, the seal 45 may include a first partition strip 452. A first sealing ring 4511 may be formed by enclosing between the first partition strip 452 and a part of the sealing ring 451. The first sealing ring 4511 may have an annular structure. The first sealing ring 4511 may be disposed around the circumferential side edge of the first opening area 411. When the return air cover 4 is disposed on the outer wall of the refrigerating liner 2, the first sealing ring 4511 may be clamped between the housing 41 and the outer wall of the refrigerating liner 2, and the first sealing ring 4511 may have a sealing ring 451 wound around the circumferential side edge of the first opening area 411 and the outer wall of the refrigerating liner 2, so as to seal the first opening area 411 and the return air cavity 40.

[0108] In some embodiments, the seal 45 may include a second partition strip 453. A third sealing ring 4513 may be formed by enclosing between the second partition strip 453 and a part of the sealing ring 451. The third sealing ring 4513 may have an annular structure. The third sealing ring 4513 may be arranged around the peripheral side edge of the second opening area 412. When the air return hood 4 is sleeved on the outer wall of the refrigerator liner 3, the third sealing ring 4513 may be clamped between the housing 41 and the outer wall of the refrigerator liner 3, and the third sealing ring 4513 may seal between the peripheral side edge of the sealing ring 451 around the second opening area 412 and the outer wall of the refrigerator liner 3, thereby sealing the second opening area 412 and the air return cavity 40.

[0109] In some embodiments, the first partition strip 452 and the second partition strip 453 may be arranged at intervals within the sealing ring 451. The first partition strip 452 and the second partition strip 453 may divide the interior of the sealing ring into a first sealing ring 4511, a second sealing ring 4512, and a third sealing ring 4513. The second sealing ring 4512 may be formed in the area between the first partition strip 452 and the second partition strip 453. The first sealing ring 4511 may be formed on the side of the first partition strip 452 away from the second partition strip 453. The third sealing ring 4513 may be formed on the side of the second partition strip 453 away from the first partition strip 452. The second sealing ring 4512 may be arranged around the peripheral side edge of the partition plate 42.

[0110] Please refer to Figures 6 to 11 As shown, in some embodiments, a clamping block 22 may protrude from the outer wall of the refrigerating chamber liner 2. A clamping groove 413 may be formed on one side of the housing 41. When the housing 41 is sleeved on the outer wall of the refrigerating chamber liner 2, the clamping block 22 can be clamped with the clamping groove 413, thereby positioning the housing 41 on the outer wall of the refrigerating chamber liner 2.

[0111] In some embodiments, the clamping block 22 may be provided on one side of the refrigerating air return opening 21. The clamping groove 413 may be located on the same side as the first opening area 411. When the clamping block 22 is clamped with the clamping groove 413, the first opening area 411 may be directly opposite and communicated with the refrigerating air return opening 21.

[0112] Please refer to Figures 6 to 11 As shown, in some embodiments, a positioning post 23 may protrude from the outer wall of the refrigerating chamber liner 2. A positioning groove 414 may be formed on one side of the housing 41. When one end of the housing 41 is sleeved on the outer wall of the refrigerating chamber liner 2, the positioning post 23 can be clamped with the positioning groove 414, thereby positioning the housing 41 on the outer wall of the refrigerating chamber liner 2.

[0113] In some embodiments, the positioning posts 23 and the clamping blocks 22 can be respectively arranged on opposite sides of the refrigerating air return opening 21. The positioning groove 414 can be arranged on the side wall of the housing 41 away from the clamping groove 413. The positioning groove 414 and the clamping groove 413 can be respectively arranged on opposite sides of the first opening area 411. When one end of the housing 41 covers the outer wall of the refrigerating box liner 2, the clamping block 22 can be clamped with the clamping groove 413, and the positioning post 23 can be clamped with the positioning groove 414.

[0114] In some embodiments, at least two positioning posts 23 can protrude from the outer wall of the refrigerating box liner 2. The at least two positioning posts 23 can be arranged at intervals on the side of the refrigerating air return opening 21 away from the clamping block 22. At least two positioning grooves 414 are formed on the side wall of the housing 41 away from the first clamping groove 413. The at least two positioning grooves 414 can be in one-to-one clamping connection with the at least two positioning posts 23, so as to position the housing 41 on the outer wall of the refrigerating box liner 2.

[0115] Please refer to Figures 6 to 11 As shown, in some embodiments, a limiting rib 32 protrudes from the outer wall of the freezing box liner 3. The limiting rib 32 extends along at least part of the side edge of the housing 41. The limiting rib 32 can be consistent with the contour of at least part of the side edge of the housing 41. When the housing 41 covers the outer wall of the freezing box liner 3, at least part of the side edge of the housing 41 can abut against the limiting rib 32 to position the housing 41 on the outer wall of the freezing box liner 3.

[0116] In some embodiments, the limiting rib 32 can include a first limiting portion 321 and a second limiting portion 322 connected at an angle. The extending direction of the first limiting portion 321 and the extending direction of the second limiting portion 322 can be connected at an angle. When the housing 41 covers the outer wall of the freezing box liner 3, at least one part of the side edge of the housing 41 can abut against the first limiting portion 321, and at least another part of the side edge of the housing 41 can abut against the second limiting portion 322 to position the housing 41 on the outer wall of the freezing box liner 3.

[0117] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A refrigerator, characterized in that: include: A box body, which forms an outer shell of the refrigerator; A refrigerator liner and a freezer liner are arranged adjacently in the box; a refrigerator chamber is formed in the refrigerator liner, and a freezer chamber is formed in the freezer liner; a refrigeration return air port is provided on the outer wall of the refrigerator liner, and the refrigeration return air port is connected to the refrigeration chamber; a freezer return air port is provided on the outer wall of the freezer liner; An evaporation chamber is formed in the freezer chamber, the evaporation chamber is separated from the freezer chamber; an evaporator is arranged in the evaporation chamber; the refrigeration return air port is connected to the evaporation chamber; A return air hood, one end of which is hooded on the outer wall of the refrigerator liner, and the other end of which is hooded on the outer wall of the freezer liner; A return air cavity is formed between the return air hood and the outer wall of the refrigerating box and the outer wall of the freezing box; one end of the return air cavity is connected to the refrigerating return air outlet, and the other end of the return air cavity is connected to the freezing return air outlet; The air in the refrigerating chamber can enter the return air cavity through the refrigerating return air port, and then return to the evaporating bin through the freezing return air port.

2. The refrigerator according to claim 1, characterized in that: The refrigeration return air vent is arranged on the rear wall of the refrigerator liner, and the freezing return air vent is arranged on the rear wall of the freezer liner; The return air hood is disposed on the rear walls of the refrigerator liner and the freezer liner, and the return air cavity is formed between the return air hood and the rear walls of the refrigerator liner and the freezer liner.

3. The refrigerator according to claim 1, characterized in that: The return air hood comprises a shell and a partition; One side of the shell has an opening, and the return air chamber is located inside the shell; The partition is arranged at the opening of the shell and divides the opening of the shell into a first opening area and a second opening area; One end of the shell is covered on the outer wall of the refrigerating box, so that the first opening area is attached to the outer wall of the refrigerating box, and one end of the return air cavity is connected with the refrigerating return air port through the first opening area; The other end of the shell is covered on the outer wall of the freezer liner, so that the second opening area is attached to the outer wall of the freezer liner, and the other end of the return air cavity is connected with the refrigeration return air port through the second opening area.

4. The refrigerator according to claim 3, characterized in that: The refrigerator comprises a sealing member, at least a portion of which is clamped between the housing and the outer wall of the refrigerating box and seals around the circumference of the first opening area; At least a portion of the sealing member is clamped between the shell and the outer wall of the freezing chamber and is sealed around the circumference of the second opening area.

5. The refrigerator according to claim 4, characterized in that: The sealing member comprises a sealing ring, a first separation strip and a second separation strip; the sealing ring is annular; The first partition strip and the second partition strip are arranged in the sealing ring at intervals to separate the interior of the sealing ring into a first sealing ring, a second sealing ring and a third sealing ring; The first sealing ring is arranged around the peripheral edge of the first opening area; The second sealing ring is arranged around the peripheral edge of the partition; The third sealing ring is arranged around the peripheral edge of the second opening area.

6. The refrigerator according to claim 3, characterized in that: The return air cover includes a first supporting rib, which is arranged in the return air cavity, one side of the first supporting rib abuts against the inner wall of the shell, and the other side of the first supporting rib abuts against the partition.

7. The refrigerator according to claim 3, characterized in that: The return air cover includes a second support rib, the second support rib is arranged in the return air cavity, and the second support rib extends from the inner wall of the shell toward the second opening area; When the return air cover is disposed on the outer wall of the freezing chamber, the second supporting ribs can abut against the outer wall of the freezing chamber.

8. The refrigerator according to claim 3, characterized in that: A clamping block is protruding from the outer wall of the refrigeration box, and the clamping block is arranged on one side of the refrigeration return air outlet; A snap-in slot is provided on one side of the housing, and the snap-in slot is located on one side of the first opening area; When the shell cover is arranged on the outer wall of the refrigerating box, the clamping block can be clamped with the clamping groove.

9. The refrigerator according to claim 8, characterized in that: A positioning column is protruding from the outer wall of the refrigeration box, and the positioning column and the clamping block are respectively arranged on two opposite sides of the refrigeration return air outlet; A positioning groove is provided on a side wall of the housing away from the clamping groove, and the positioning groove and the clamping groove are respectively arranged on two opposite sides of the first opening area; When one end of the shell is covered on the outer wall of the refrigerating box, the positioning column can be engaged with the positioning groove.

10. The refrigerator according to claim 3, characterized in that: A limiting rib is convexly provided on the outer wall of the freezing chamber, and the limiting rib is extended along at least part of the side edge of the shell; When the shell is covered on the outer wall of the freezing chamber, at least part of the side edge of the shell can abut against the limiting ribs to position the shell on the outer wall of the freezing chamber.

11. The refrigerator according to claim 3, characterized in that: A heating plate and a heating wire are arranged on the outer wall of the return air hood. The heating plate is attached to the outer wall of the shell, and the heating wire is laid on the outer wall of the heating plate.

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