Refrigerator

Abstract

The utility model discloses a refrigerator. The refrigerator comprises a refrigerator body; the refrigerating container liner is arranged in the refrigerator body, a refrigerating chamber with an opening in the front side is formed in the refrigerating container liner, and an air outlet is formed in the rear wall of the refrigerating container liner; the freezing box liner is arranged in the box body, the freezing box liner and the refrigerating box liner are arranged in a spaced mode, a freezing chamber with an opening in the front side is formed in the freezing box liner, and an air inlet is formed in the rear wall of the freezing box liner; the air return pipe is arranged on the back side of the refrigerating box liner and the back side of the freezing box liner, the two ends of the air return pipe are connected with the air outlet and the air inlet respectively, and warm air in the refrigerating chamber flows into the freezing chamber through the air return pipe; wherein an ejector block is arranged between the air return pipe and the rear wall of the box body, and the two ends of the ejector block abut against the air return pipe and the rear wall of the box body respectively. According to the refrigerator, the air return pipe and the refrigerator container can be connected in a sealed mode, and the assembling efficiency and universality of the air return pipe are improved.

Description

Technical Field

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

[0002] At present, with the improvement of living standards, refrigerators have become an indispensable part of people's daily lives. Refrigerators can accommodate and refrigerate items and extend the shelf life of items.

[0003] The refrigerator includes a box body and a box liner arranged in the box body, and the box liner forms a freezer and a refrigerator. The temperatures in the freezer and refrigerator are different to store different items. For a single-system refrigerator with refrigeration and freezing functions, the refrigerator's refrigeration system is located in the freezer, and the cold air in the freezer is transmitted to the refrigerator through the air supply duct, and the warm air in the refrigerator is transmitted from the refrigerator to the freezer through the return air duct, thereby achieving refrigeration of the refrigerator.

[0004] In the related art, both ends of the return air duct of the refrigerator are connected to the vents set on the box body, and the surrounding areas of the connection need to be sealed by sticking sponge. One is to prevent the foaming material from entering the box body from the vents when foaming occurs inside the box, and the other is to prevent the cold air from escaping from the vents during the circulation process. However, this will reduce the assembly efficiency, the sealing effect depends on the worker's operating proficiency, and the sealing quality is unstable. Utility Model Content

[0005] The purpose of this application is to solve the above-mentioned problems and other problems.

[0006] The purpose of the present application is also to achieve a sealed connection between the return air duct and the box without sealing by gluing sponge.

[0007] The purpose of the present application is also to improve the assembly efficiency of the return air duct and the box.

[0008] The purpose of the present application is also to improve the sealing effect of the return air duct and the box liner.

[0009] The purpose of the present application is not limited to the above-mentioned purpose, and those skilled in the art can clearly understand other purposes not mentioned through the following description.

[0010] The refrigerator of the present application for achieving the above-mentioned purpose includes a box body.

[0011] The refrigerator comprises a refrigerating chamber, and the refrigerating chamber can be arranged in the chamber.

[0012] A refrigerating chamber with a front opening is formed in the refrigerating box, and an air outlet is provided on the rear wall of the refrigerating box.

[0013] The refrigerator comprises a freezer chamber which is arranged in the housing.

[0014] The freezer liner can be spaced apart from the refrigerator liner, a freezing chamber with a front opening is formed in the freezer liner, and an air inlet is formed on the rear wall of the freezer liner.

[0015] The refrigerator comprises a return air duct, which can be arranged on the back side of the refrigerator liner and the freezer liner.

[0016] Two ends of the return air duct are connected to the air outlet and the air inlet respectively, and the warm air in the refrigerating chamber flows into the freezing chamber through the return air duct.

[0017] A top block may be provided between the return air duct and the rear wall of the box body, and two ends of the top block are respectively pressed against the return air duct and the rear wall of the box body.

[0018] The portion of the return air duct close to the air inlet and the portion close to the air outlet can be pressed against the rear wall of the box body through the top block.

[0019] The return air duct may include a duct body.

[0020] The return air duct may include a first interface portion.

[0021] The return air duct may include a second interface portion.

[0022] Both ends of the tube body are connected to one end of the first interface portion and one end of the second interface portion respectively.

[0023] The other ends of the first interface portion and the second interface portion can be bent toward the front side of the box body to extend into the air outlet and the air inlet respectively.

[0024] The outer peripheries of the first interface portion and the second interface portion may be provided with a first ring stopper and a second ring stopper, respectively.

[0025] The first ring stopper may abut against the rear wall of the refrigerator box.

[0026] The second ring stopper may abut against the rear wall of the freezer chamber.

[0027] The first ring stopper and the second ring stopper may be integrally formed with the first interface portion and the second interface portion respectively.

[0028] The first interface portion and the second interface portion may both be formed with a step portion, and both ends of the tube body are respectively inserted into the first interface portion and the second interface portion.

[0029] Both ends of the tube body may be respectively abutted against the corresponding step portions.

[0030] The first interface portion and the second interface portion may be provided with a first card slot and a second card slot respectively on one end facing the rear wall of the box body, and the two top blocks may be respectively engaged in the first card slot and the second card slot.

[0031] A first enclosure and a second enclosure may be respectively provided on one end of the first interface portion and the second interface portion facing the rear wall of the box body.

[0032] The first enclosure and the second enclosure may both extend along the front-rear direction of the box body.

[0033] The first enclosure may be disposed on the first interface portion to form the first card slot.

[0034] The second enclosure may be disposed on the second interface portion to form the second card slot.

[0035] The first enclosure and the second enclosure may be integrally formed with the first interface portion and the second interface portion, respectively.

[0036] The refrigerator includes an air supply duct.

[0037] The air supply duct may be disposed between the refrigerator liner and the freezer liner.

[0038] Two ends of the air supply pipe can be connected to the refrigerating chamber and the freezing chamber respectively, and the cold air in the freezing chamber flows into the refrigerating chamber through the air supply pipe.

[0039] Details of other embodiments are included in the detailed description and drawings.

[0040] According to at least one of the embodiments of the present application, a top block is provided, and the two ends of the top block are respectively pressed against the return air duct and the rear wall of the box body, so that the return air duct is pressed against the freezer inner shell and the refrigerator inner shell by the rear wall of the box body, so that the pressing pressure of the rear wall of the box body can be used to make the contact between the return air duct and the connection between the air inlet and the air outlet closer, and the sealing is improved, and there is no need to stick sponge for sealing.

[0041] According to at least one of the embodiments of the present application, by providing a top block, the assembly efficiency of the return air duct and the box casing can be improved.

[0042] According to at least one of the embodiments of the present application, it is convenient to adjust the top blocks of different lengths according to the cabinets of different thicknesses to improve the versatility of the top blocks, so that different refrigerators can improve the sealing of the return air duct by setting the top blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 shows a schematic diagram of the front side of a refrigerator according to some embodiments;

[0044] Figure 2shows a partial schematic diagram of the rear side of a refrigerator according to some embodiments;

[0045] Figure 3 shows a top view of a refrigerator according to some embodiments;

[0046] Figure 4 Shows Figure 3 Sectional view in the AA direction;

[0047] Figure 5 An example is shown Figure 4 A partial enlarged view of point B in the middle;

[0048] Figure 6 A schematic structural diagram of a first interface portion of a refrigerator according to some embodiments is exemplarily shown.

[0049] Description of reference numerals:

[0050] The box body 10, the refrigerator box 20, the refrigerator chamber 200, the air outlet 210, the freezer box 30, the freezer chamber 300, the air inlet 310, the return air duct 40, the tube body 400, the first interface part 410, the first ring block 411, the first enclosure 412, the second interface part 420, the second ring block 421, the second enclosure 422, the step part 430, the top block 50, and the air supply duct 60. DETAILED DESCRIPTION

[0051] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0052] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and common meanings.

[0053] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0054] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0055] In the related art, the two ends of the return air duct of the refrigerator are connected to the vents set on the box, and the surroundings of the connection need to be sealed by sticking sponges, firstly to prevent the foaming material from entering the box from the vents when the box is foaming, and secondly to prevent the cold air from leaking from the vents during the circulation process. However, this will make the assembly efficiency low, the sealing effect depends on the worker's operating proficiency, and the sealing quality is unstable. In order to solve the above problems, the present application proposes a refrigerator.

[0056] For ease of understanding, the side of the refrigerator facing the user for user operation is the front side of the refrigerator, and the side of the refrigerator facing away from the user is the rear side of the refrigerator.

[0057] See also Figure 1 and Figure 2 A refrigerator may include a box body 10. The box body 10 is the outer shell structure of the refrigerator, and is used to accommodate other components, such as a box liner and a refrigeration system, etc. The box body 10 may be in a rectangular shape, or in other shapes.

[0058] In some embodiments, the refrigerator may include a refrigerator liner 20. The refrigerator liner 20 is disposed in the housing 10, and a refrigerator chamber 200 with a front opening may be formed in the refrigerator liner 20. The temperature in the refrigerator chamber 200 may be controlled between 2°C and 8°C, and is mostly used to store fruits and vegetables for daily needs.

[0059] In some embodiments, the refrigerator may include a freezer liner 30. The freezer liner 30 is disposed in the housing 10, and the freezer liner 30 may be spaced apart from the refrigerator liner 20, such as the freezer liner 30 may be spaced apart from the refrigerator liner 20 in the vertical direction, or the freezer liner 30 may be spaced apart from the refrigerator liner 20 in the left-right direction. A freezer chamber 300 with an opening at the front may be formed in the freezer liner 30, and the temperature in the freezer chamber 300 is relatively low and may be controlled below zero degrees, and may be used to store meat that needs to be stored for a long time.

[0060] In some embodiments, the refrigerator may include a door body. The door body may be provided with a refrigerating chamber 200 door and a freezing chamber 300 door corresponding to the refrigerating chamber 200 and the freezing chamber 300, respectively. The refrigerating chamber 200 door and the freezing chamber 300 door may be rotatably connected to the front side of the box body 10. The refrigerating chamber 200 door is used to open and close the refrigerating chamber 200, and the freezing chamber 300 door is used to open and close the freezing chamber 300. When the door body is closed, the refrigerating chamber 200 and the freezing chamber 300 are in a sealed state, which is convenient for storing items at low temperatures and preventing cold from leaking out. When the door body is opened, it is convenient for users to take and put items.

[0061] In some embodiments, the refrigerator may include a refrigeration system for providing coldness for the refrigerator. The refrigeration system may include a compressor, an evaporator, and a condenser. The compressor and the condenser may be arranged in a compressor compartment at the bottom of the box body 10, and the evaporator may be arranged in a refrigeration air duct in the freezing chamber 300. The compressor, the condenser, and the evaporator may be connected by a capillary tube, and a refrigerant circulates in the capillary tube. The specific working principle of the refrigeration system will not be described in detail here.

[0062] In some embodiments, since the evaporator is arranged in the freezer chamber 300, the temperature in the freezer chamber 300 is lower than that in the refrigerator chamber 200. The cold air in the freezer chamber 300 can be transported to the refrigerator chamber 200 through the air supply duct 60 to keep the refrigerator chamber 200 in a certain low temperature environment, while the warm air in the refrigerator chamber 200 is transported back to the freezer chamber 300 through the return air duct 40, thereby achieving refrigeration of the refrigerator chamber 200.

[0063] In some embodiments, the refrigerator may include an air supply duct 60. The air supply duct 60 may be disposed between the refrigerator liner 20 and the freezer liner 30, and the two ends of the air supply duct 60 are respectively connected to the refrigerator compartment 200 and the freezer compartment 300, and the cold air in the freezer compartment 300 flows to the refrigerator compartment 200 through the air supply duct 60.

[0064] In some embodiments, when the refrigerator liner 20 is disposed on the upper side of the freezer liner 30, both ends of the air supply duct 60 may be connected to the bottom of the refrigerator liner 20 and the top of the freezer liner 30, so that the cold air in the freezer compartment 300 can enter the refrigerating compartment 200 through the shortest path. The portion where the air supply duct 60 is connected to the refrigerator liner 20 and the freezer liner 30 may be provided with sealing measures, such as sealing rings or sealing tapes, to improve the sealing of the connection.

[0065] In some embodiments, the refrigerator may include a return air duct 40, and the refrigerator is connected to the refrigerating chamber 200 and the freezing chamber 300 through the return air duct 40. The warm air in the refrigerating chamber 200 can flow to the freezing chamber 300 through the return air duct 40, thereby forming a circulation of cold air and warm air in cooperation with the air supply duct 60. The warm air here has a higher temperature than the cold air flowing from the freezing chamber 300 to the refrigerating chamber 200.

[0066] In some embodiments, the return air duct 40 can be arranged on the back side of the refrigerator liner 20 and the freezer liner 30. Since there is space between the back side of the refrigerator liner 20 and the freezer liner 30 and the rear wall of the box body 10, the return air duct 40 can be better arranged. The position where the return air duct 40 is connected to the freezer liner 30 can be closer to the lower side of the freezer body 10. After the warm air returns to the freezer chamber 300 from the return air duct 40, it can flow through the evaporator in the freezing air duct to exchange heat and become cold air.

[0067] In some embodiments, an air outlet 210 may be provided on the rear wall of the refrigerator liner 20, and the air outlet 210 may be close to the lower side of the rear wall of the refrigerator liner 20. An air inlet 310 may be provided on the rear wall of the freezer liner 30, and the air inlet 310 may be close to the lower side of the freezer liner 30. Both ends of the return air duct 40 are respectively connected to the air inlet 310 and the air outlet 210 to realize the circulation of warm air from the refrigerator compartment 200 to the freezer compartment 300.

[0068] In some embodiments, a top block 50 may be provided between the return air duct 40 and the rear wall of the box body 10, and the two ends of the top block 50 are respectively pressed against the return air duct 40 and the rear wall of the box body 10, so that the return air duct 40 is pressed against the freezer liner 30 and the refrigerator liner 20 by the rear wall of the box body 10, so that the contact of the connection between the return air duct 40 and the air inlet 310 and the air outlet 210 can be made tighter by the pressure of the rear wall of the box body 10, the sealing is improved, and there is no need to stick sponge for sealing, the assembly efficiency of the return air duct 40 is greatly improved, and the sealing quality is stable. When the box body 10 is foamed, it is difficult for the foaming material to enter the air inlet 310 and the air outlet 210, and the impact of the foaming material on the return air duct 40 is also reduced, avoiding the displacement of the return air duct 40.

[0069] In some embodiments, the top block 50 may be block-shaped, thereby increasing its contact area with the rear wall of the box body 10 and the return air duct 40, avoiding stress concentration, and achieving a better pressing effect on the return air duct 40.

[0070] In some embodiments, the portions of the return air duct 40 close to the air inlet 310 and the air outlet 210 can be pressed against the rear wall of the box body 10 through the top block 50, so that the return air duct 40 can be pressed more tightly against the air inlet 310 and the air outlet 210, thereby improving the pressing effect and further enhancing the sealing of the air inlet 310 and the air outlet 210.

[0071] In some embodiments, a top block 50 may be provided at the middle of the return air duct 40 , or a plurality of top blocks 50 may be provided at intervals along the length direction thereof to enhance the pressure resistance effect.

[0072] In some embodiments, the return air duct 40 may include a tube body 400, which may extend in the up-down direction of the box body 10, thereby connecting the refrigerator liner 20 and the freezer liner 30. The cross section of the tube body 400 may be rectangular or circular, so that the tube body 400 is a rectangular tube or a circular tube.

[0073] Continue to see Figures 3 to 6 In some embodiments, the return air duct 40 may include a first interface portion 410. The first interface portion 410 may be used as a transition component for connecting the tube body 400 and the air outlet 210 on the refrigerator liner 20. A channel is formed inside the first interface portion 410 for gas to flow.

[0074] In some embodiments, the return air duct 40 may include a second interface portion 420. The second interface portion 420 may be used as a transition component for connecting the tube body 400 and the air inlet 310 on the freezer liner 30. A channel is formed inside the second interface portion 420 for gas to flow. The second interface portion 420 may have the same structure as the first interface portion 410.

[0075] In some embodiments, both ends of the tube body 400 can be connected to one end of the first interface portion 410 and the second interface portion 420, respectively, to form the return air duct 40. The other ends of the first interface portion 410 and the second interface portion 420 can be bent toward the front side of the cabinet 10, and can be aligned with the air outlet 210 and the air inlet 310, respectively, so as to extend into the air outlet 210 and the air inlet 310, respectively, to achieve the change of gas flow direction, and the warm air in the refrigerating chamber 200 can flow into the freezing chamber 300 along the first interface portion 410, the tube body 400 and the second interface portion 420 in sequence.

[0076] In some embodiments, a first ring stopper 411 may be provided on the periphery of the first interface portion 410, and the first ring stopper 411 protrudes from the periphery of the first interface portion 410. The first ring stopper 411 may be arranged around the first interface portion 410, and when one end of the first interface portion 410 extends into the air outlet 210, the first ring stopper 411 may abut against the rear wall of the refrigeration chamber 20, thereby limiting the first interface portion 410 in the front-to-back direction of the box body 10, and preventing the first interface portion 410 from extending too far into the air outlet 210, thereby affecting the internal space of the refrigeration chamber 200.

[0077] In some embodiments, the first ring stopper 411 abuts against the rear wall of the refrigerator liner 20, which can increase the contact area between the first interface portion 410 and the rear wall of the refrigerator liner 20 where the air outlet 210 is located, and can improve the sealing effect, so that the foaming material is not easy to enter the air outlet 210. The first ring stopper 411 can extend along the up and down direction of the box body 10 to be in surface contact with the rear wall of the refrigerator liner 20, and the sealing effect is better.

[0078] In some embodiments, the outer periphery of the second interface portion 420 may be provided with a second ring stopper 421, and the second ring stopper 421 protrudes from the outer periphery of the second interface portion 420. The second ring stopper 421 may be arranged around the second interface portion 420, and when one end of the second interface portion 420 extends into the air inlet 310, the second ring stopper 421 may abut against the rear wall of the freezer liner 30, thereby limiting the second interface portion 420 in the front-to-back direction of the box body 10, and preventing the second interface portion 420 from extending too far into the air inlet 310, thereby affecting the internal space of the freezer chamber 300.

[0079] In some embodiments, the second ring stopper 421 abuts against the rear wall of the freezer liner 30, which can increase the contact area between the second interface portion 420 and the rear wall of the freezer liner 30 where the air inlet 310 is located, and can improve the sealing effect, so that the foaming material is not easy to enter the air inlet 310. The second ring stopper 421 can extend along the up and down direction of the box body 10 to be in surface contact with the rear wall of the freezer liner 30, and the sealing effect is better.

[0080] In some embodiments, the first ring stopper 411 can be integrally formed with the first interface portion 410. The second ring stopper 421 can be integrally formed with the second interface portion 420, thereby simplifying the manufacturing process.

[0081] In some embodiments, the outer diameter of the tube body 400 can be smaller than the inner diameter of the first interface portion 410 and the second interface portion 420, so that the two ends of the tube body 400 can be respectively inserted into the first interface portion 410 and the second interface portion 420, thereby increasing the contact area between the tube body 400 and the first interface portion 410 and the second interface portion 420. By expanding the contact area, a better sealing effect is achieved, and the amount of warm air flowing out from the gap between the tube body 400 and the first interface portion 410 and the second interface portion 420 is reduced.

[0082] Of course, in some embodiments, the outer diameter of the tube body 400 may be larger than the inner diameters of the first interface portion 410 and the second interface portion 420, so that the first interface portion 410 and the second interface portion 420 can extend into the tube body 400, or the tube body 400 can also be integrally formed with the first interface portion 410 and the second interface portion 420.

[0083] In some embodiments, the outer diameter of the tube body 400 and the inner diameters of the first interface portion 410 and the second interface portion 420 can be reasonably set so that a transition fit can be formed when the tube body 400 is plugged into the first interface portion 410 and the second interface portion 420. The tube body 400 can be installed more tightly with the first interface portion 410 and the second interface portion 420, with better sealing.

[0084] In some embodiments, a step portion 430 may be formed in the first interface portion 410, and after one end of the tube body 400 extends into the first interface portion 410, it abuts against the step portion 430 in the first interface portion 410, thereby limiting the axial position of the tube body 400 and preventing the tube body 400 from extending too deeply into the first interface portion 410. The step portion 430 protrudes from the inner wall of the first interface portion 410, and the thickness of the step portion 430 may correspond to the thickness of the tube body 400, so as to just abut against one end of the tube body 400.

[0085] In some embodiments, a step portion 430 may be formed in the second interface portion 420, and after the other end of the tube body 400 extends into the second interface portion 420, it abuts against the step portion 430 in the second interface portion 420, thereby limiting the position of the other side of the tube body 400 in the axial direction and preventing the tube body 400 from extending too deeply into the second interface portion 420. The step portion 430 in the second interface portion 420 may have the same structure as the step portion 430 in the second interface portion 420.

[0086] In some embodiments, a first slot may be provided on one end of the first interface portion 410 facing the outer wall of the box body 10, and the shape of the first slot may match the shape of the top block 50. The top block 50 near the air outlet 210 may be snapped into the first slot to fix the top block 50, which facilitates the installation of the top block 50. The top block 50 is installed by snapping, which facilitates the adjustment of top blocks 50 of different lengths according to the box body 10 of different thicknesses, so as to improve the versatility of the top block 50, so that different refrigerators can improve the sealing of the return air duct 40 by setting the top block 50.

[0087] In some embodiments, a second card slot may be provided on one end of the second interface portion 420 facing the outer wall of the box body 10, and the shape of the second card slot may match the shape of the top block 50. The top block 50 near the air inlet 310 may be snapped into the second card slot to fix the top block 50.

[0088] In some embodiments, the top block 50 can be made of an elastic material, such as foam. If the top block 50 has a certain elasticity, when the top block 50 is pressed between the rear wall of the box body 10 and the freezer liner 30 and the refrigerator liner 20, elastic deformation can be generated, thereby pressing tighter and achieving a better sealing effect.

[0089] In some embodiments, a first enclosure 412 may be provided on one end of the first interface portion 410 facing the rear wall of the box body 10, and the second enclosure 422 may extend along the front-rear direction of the box body 10. The first enclosure 412 is disposed on the first interface portion 410 to form a first slot, thereby avoiding excavating the first slot on the first interface portion 410 and reducing the thickness of the first interface portion 410.

[0090] In some embodiments, a second enclosure 422 may be provided on one end of the second interface portion 420 facing the rear wall of the box body 10, and the second enclosure 422 may extend along the front-rear direction of the box body 10. The second enclosure 422 is disposed on the second interface portion 420 to form a second slot, thereby avoiding excavating the second slot on the second interface portion 420 and reducing the thickness of the second interface portion 420.

[0091] In some embodiments, the first enclosure 412 can be integrally formed with the first interface portion 410. The second enclosure 422 can be integrally formed with the second interface portion 420, which can simplify the manufacturing process.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0093] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this specification, the description of the reference terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of contradiction, technicians in this field can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples.

[0094] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A refrigerator, characterized in that: include: Box; A refrigerating box liner is arranged in the box body, a refrigerating chamber with a front opening is formed in the refrigerating box liner, and an air outlet is opened on the rear wall of the refrigerating box liner; A freezer liner is arranged in the box body and is spaced apart from the refrigeration liner. A freezing chamber with a front opening is formed in the freezer liner, and an air inlet is opened on the rear wall of the freezer liner; A return air duct is arranged on the back side of the refrigerator and freezer, and the two ends of the return air duct are respectively connected to the air outlet and the air inlet, so that the warm air in the refrigerator compartment flows into the freezer compartment through the return air duct; Wherein, a top block is provided between the return air duct and the rear wall of the box body, and two ends of the top block are respectively pressed against the return air duct and the rear wall of the box body.

2. The refrigerator according to claim 1, characterized in that: The parts of the return air duct close to the air inlet and close to the air outlet are both tightly pressed against the rear wall of the box body through the top block.

3. The refrigerator according to claim 2, characterized in that: The return air duct includes a tube body, a first interface portion and a second interface portion, the two ends of the tube body are respectively connected to one end of the first interface portion and the second interface portion, and the other ends of the first interface portion and the second interface portion are bent toward the front side of the box body to extend into the air outlet and the air inlet respectively.

4. The refrigerator according to claim 3, characterized in that: The outer peripheries of the first interface portion and the second interface portion are respectively provided with a first ring stopper and a second ring stopper, the first ring stopper abuts against the rear wall of the refrigerator liner, and the second ring stopper abuts against the rear wall of the freezer liner.

5. The refrigerator according to claim 4, characterized in that: The first ring stopper and the second ring stopper are integrally formed with the first interface portion and the second interface portion respectively.

6. The refrigerator according to claim 3, characterized in that: The first interface portion and the second interface portion are both formed with step portions, and the two ends of the tube body are respectively inserted into the first interface portion and the second interface portion, and the two ends of the tube body are respectively abutted against the corresponding step portions.

7. The refrigerator according to claim 6, characterized in that: The first interface portion and the second interface portion are respectively provided with a first card slot and a second card slot on one end facing the rear wall of the box body, and the two top blocks are respectively engaged in the first card slot and the second card slot.

8. The refrigerator according to claim 7, characterized in that: The first interface portion and the second interface portion are respectively provided with a first enclosure and a second enclosure on one end facing the rear wall of the box body, and the first enclosure and the second enclosure both extend along the front-to-back direction of the box body. The first enclosure is arranged on the first interface portion to form the first card slot, and the second enclosure is arranged on the second interface portion to form the second card slot.

9. The refrigerator according to claim 8, characterized in that: The first enclosure and the second enclosure are integrally formed with the first interface portion and the second interface portion respectively.

10. The refrigerator according to claim 1, characterized in that: The refrigerator also includes an air supply duct, which is placed between the refrigerator and freezer compartments. Both ends of the air supply duct are connected to the refrigerator compartment and the freezer compartment respectively, and the cold air in the freezer compartment flows to the refrigerator compartment through the air supply duct.

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