Refrigeration box liner and refrigeration equipment

Abstract

A refrigerator container cavity of the refrigeration refrigerator container comprises a storage chamber, an evaporation bin, an air supply channel and an air return channel, an air supply opening and an air return opening are formed in the container wall of the refrigeration refrigerator container, and a channel inlet of the air supply channel communicates with a bin outlet of the evaporation bin; a channel outlet of the air supply channel is communicated with the storage chamber; the air supply outlet communicates with the air supply channel and is configured to supply air to the outside of the refrigeration box liner; the air return opening is configured to be used for receiving return air outside the refrigeration box liner, a channel inlet of the air return channel communicates with the air return opening, and a channel outlet of the air return channel communicates with a bin inlet of the evaporation bin. According to the refrigeration box liner and the refrigeration equipment, the air return channel is integrated in the refrigeration box liner instead of being designed in a foaming layer according to traditional design, transfer of the air return channel from the foaming layer to the refrigeration box liner is completed, and a series of problems caused by the fact that the air return channel of the related refrigeration equipment occupies the foaming layer are thoroughly solved.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and in particular to the liner of a refrigerator and refrigeration equipment. Background Technology

[0002] The freezer recirculation system is a crucial component of a refrigerator's refrigeration cycle. Its primary function is to circulate the air within the freezer compartment to ensure temperature uniformity and refrigeration efficiency. Simply put, it ensures the proper flow of cold air within the freezer, much like how an air conditioner circulates hot and cold air indoors using a fan.

[0003] During the cooling process in the freezer compartment, the air temperature around the evaporator drops rapidly. As the cold air sinks, it is drawn back to the vicinity of the evaporator through the return air vent. The return air vent is designed to effectively collect the cooler air from the room. After being cooled again by the evaporator, the drawn-back air is blown back into the freezer compartment through the outlet air vent. This cycle is continuous, ensuring that the temperature in all corners of the freezer compartment remains relatively stable.

[0004] Currently, refrigerator recirculation systems design the recirculation duct within the freezer foam layer, recirculating air from the refrigerator compartment back into the freezer compartment. Therefore, conventional recirculation systems require pre-embedding plastic or foam recirculation ducts within the foam layer to create a cavity for air return. However, this structure occupies foam layer volume, reducing insulation efficiency. Furthermore, pre-installation is labor-intensive, and there is a risk of leakage if the air vents are not properly sealed. Utility Model Content

[0005] Therefore, it is necessary to provide a refrigeration chamber and refrigeration equipment to address the aforementioned technical problems.

[0006] This application provides a refrigeration box liner, the interior of which has a liner chamber, the liner chamber including a storage chamber, an evaporation chamber, an air supply channel and a return air channel, and the liner wall of the refrigeration box liner is provided with an air supply port and a return air port;

[0007] The evaporation chamber is configured to house an evaporator. The inlet of the air supply duct is connected to the outlet of the evaporation chamber, and the outlet of the air supply duct is connected to the storage chamber. The air outlet is connected to the air supply duct and is configured to supply air to the outside of the refrigeration chamber.

[0008] The return air inlet is configured to receive return air from outside the refrigeration chamber. The inlet of the return air duct is connected to the return air inlet, and the outlet of the return air duct is connected to the inlet of the evaporation chamber.

[0009] In one embodiment, the refrigeration chamber is configured as a freezer chamber, the storage compartment of the refrigeration chamber is a freezer compartment, the air outlet is configured to supply air to the freezer compartment of the refrigeration chamber, and the return air outlet is configured to receive return air from the freezer compartment of the refrigeration chamber; or, the refrigeration chamber is configured as a refrigeration chamber, the storage compartment of the refrigeration chamber is a freezer compartment, the air outlet is configured to supply cold air to the freezer compartment of the freezer chamber, and the return air outlet is configured to receive return air from the freezer compartment of the freezer chamber.

[0010] And / or,

[0011] The return air duct is located on the rear wall of the refrigeration chamber.

[0012] And / or,

[0013] The evaporation chamber has a cooling zone inside, which is configured to house an evaporator. The distance of the cooling zone from the chamber entrance of the evaporation chamber is less than the distance from the chamber exit of the evaporation chamber.

[0014] And / or,

[0015] The air supply outlet is positioned higher than the return air outlet within the refrigeration unit.

[0016] In one embodiment, a return air cover is provided on the inner wall of the refrigeration chamber, and the inner side wall of the return air cover and the inner wall of the refrigeration chamber are configured to form the return air channel.

[0017] In one embodiment, an air duct groove is formed on the inner wall of the refrigeration chamber, and a return air cover is disposed on the air duct groove. The inner side wall of the return air cover and the air duct groove are configured to form the return air channel.

[0018] In one embodiment, the return air cover is configured as a curved panel, the inner sidewall of the return air cover has a cover recess, and the cover recess of the return air cover and the air duct groove are configured to form the return air passage; and / or,

[0019] A heat insulation structure is installed inside the air duct groove.

[0020] In one embodiment, the thermal insulation structure is configured to employ a padding structure disposed in at least a portion of the inner wall of the duct recess; and / or,

[0021] The insulation structure is configured to use polyethylene cotton.

[0022] In one embodiment, the return air duct has a duct width and a duct height. From the duct inlet to the duct outlet, the duct width of at least a portion of the duct segment gradually increases, and the duct height of at least a portion of the duct segment gradually decreases, wherein the cross-sectional area of ​​the duct section remains constant.

[0023] In one embodiment, the cross-sectional area of ​​the return air duct is between 800 square millimeters and 1200 square millimeters; and / or,

[0024] The width and height of the return air duct are both smaller than the width and height of the evaporation chamber.

[0025] In one embodiment, the refrigeration chamber is provided with a compartment partition and an air duct cover, the compartment partition and the return air cover being configured to separate the evaporation chamber, and the compartment partition and the air duct cover being configured to separate the air supply channel;

[0026] And / or,

[0027] The return air cover is assembled to the inner wall of the refrigeration box liner based on a snap-fit ​​assembly;

[0028] And / or,

[0029] The return air cover is assembled to the inner wall of the refrigeration box liner based on a threaded assembly;

[0030] And / or,

[0031] The outer wall of the return air cover faces the evaporation chamber, and the outer wall of the return air cover is provided with a mounting assembly configured for mounting an evaporator.

[0032] This application provides a refrigeration device, which includes the refrigeration chamber.

[0033] In the aforementioned refrigeration box and refrigeration equipment, the return air duct is integrated inside the refrigeration box, rather than being designed in the foam layer according to traditional design. Based on this improved design, the return air duct is transferred from the foam layer to the refrigeration box, thereby completely solving a series of problems caused by the return air duct of the relevant refrigeration equipment occupying the foam layer. Attached Figure Description

[0034] Figure 1 This is a perspective view of a refrigeration chamber provided in one embodiment of this application.

[0035] Figure 2 For example Figure 1The diagram shows a three-dimensional view of the first longitudinal section of the refrigeration chamber.

[0036] Figure 3 For example Figure 1 The diagram shows a three-dimensional view of the second longitudinal section of the refrigeration chamber.

[0037] Figure 4 For example Figure 1 The diagram shows a three-dimensional view of the second longitudinal section of the refrigeration chamber.

[0038] Figure 5 This is a first-view perspective view of a return air cover provided in one embodiment of this application.

[0039] Figure 6 This is a second-view perspective view of a return air cover provided in one embodiment of this application.

[0040] Icon labels:

[0041] 1000, Refrigeration box liner; 2000, Evaporator;

[0042] 1001. Storage room; 1002. Evaporation chamber; 1003. Air supply duct; 1004. Return air duct; 1005. Air supply outlet; 1006. Return air outlet;

[0043] 1100, Return air cover; 1101, Cover recess; 1200, Air duct groove; 1300, Thermal insulation structure; 1400, Compartment partition; 1500, Air duct cover; 1600, Snap-fit ​​assembly; 1700, Threaded assembly; 1800, Mounting assembly. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] This application provides a refrigeration device, which includes essential components such as a housing, a refrigeration unit, and a refrigeration chamber 1000, as described in relevant technologies. For example, the refrigeration device can be a refrigerator, a freezer, etc., and is not limited thereto. To address the problems caused by the return air duct 1004 occupying the foam layer, this application provides a design scheme that removes the return air duct 1004 from the foam layer and incorporates it within the refrigeration chamber 1000.

[0051] See Figure 1 and Figure 2 As shown, this application provides a refrigeration box liner 1000, the refrigeration box liner 1000 having a liner chamber inside, i.e. Figure 2 As shown, the refrigeration chamber 1000 contains a chamber chamber with a front opening. This chamber chamber forms the basis of the spatial structure of the refrigeration chamber 1000, including the storage chamber 1001, the evaporation chamber 1002, the air supply duct 1003, and the return air duct 1004. For example... Figure 1 and Figure 2 As shown, the inner wall of the refrigeration box liner 1000 has an air supply port 1005 and an air return port 1006. Both the air supply port 1005 and the air return port 1006 are configured to communicate with the inner chamber of the refrigeration box. This is the general structural design of the refrigeration box liner 1000. In this structural design, by Figure 2 It is known that the return air duct 1004 is integrated inside the refrigeration chamber 1000, rather than being designed in the foam layer according to the traditional design. Based on this improved design, the transfer of the return air duct 1004 from the foam layer to the refrigeration chamber 1000 is completely completed.

[0052] Continue reading Figure 2As shown, in the internal design of the refrigeration chamber 1000, the evaporation chamber 1002 is mainly configured to house the evaporator 2000. The evaporator 2000 occupies a portion of the space within the evaporation chamber 1002 and stably performs refrigeration work, cooling the surrounding air to form cold air. Simultaneously, the inlet of the air supply duct 1003 connects to the outlet of the evaporation chamber 1002, and the outlet of the air supply duct 1003 connects to the storage chamber 1001. The air supply duct 1003 can deliver a portion of the cold air to the storage chamber 1001 of the refrigeration chamber 1000 to cool the storage chamber 1001. Furthermore, the air outlet 1005 is connected to the air supply channel 1003, and the air supply channel 1003 is also configured to deliver a portion of the cold air outward through the air outlet 1005. That is, the air outlet 1005 is configured to deliver air to the outside of the refrigeration chamber 1000. When the two refrigeration chambers 1000 cooperate with each other, the cold air generated by the evaporator 2000 can also be used to deliver cold air to the other refrigeration chamber through the air outlet 1005 to cool the other refrigeration chamber.

[0053] Since the return air duct 1004 is designed in the aforementioned first refrigeration chamber 1000, the return air port 1006 of the refrigeration chamber 1000 can be configured to receive return air from outside the refrigeration chamber 1000, that is, to receive return air from the other refrigeration chamber. The inlet of the return air duct 1004 is connected to the return air port 1006, and the outlet of the return air duct 1004 is connected to the inlet of the evaporation chamber 1002. Thus, based on the return air duct 1004 integrated in the aforementioned first refrigeration chamber 1000, the return air from the other refrigeration chamber is received back into the evaporation chamber 1002, thereby completing the air supply and return air circulation to the other refrigeration chamber.

[0054] The first refrigeration chamber 1000 and the other refrigeration chamber mentioned above can be either a freezer chamber or a refrigerator chamber. For example, in one embodiment, when the refrigeration chamber 1000 provided in this application (i.e., the aforementioned first refrigeration chamber 1000) is configured as a freezer chamber, the storage compartment 1001 of the refrigeration chamber 1000 is a freezer compartment, the air outlet 1005 is configured to supply air to the refrigerator compartment of the refrigerator chamber (i.e., the aforementioned other refrigeration chamber), and the return air outlet 1006 is configured to receive the return air from the refrigerator compartment of the refrigerator chamber.

[0055] In another embodiment, the refrigeration chamber 1000 provided in this application (i.e., the aforementioned first refrigeration chamber 1000) is configured as a refrigerator chamber, the storage compartment 1001 of the refrigeration chamber 1000 is a refrigerator compartment, the air outlet 1005 is configured to supply cold air to the freezer compartment of the freezing chamber (i.e., the aforementioned other refrigeration chamber), and the return air outlet 1006 is configured to receive return air from the freezer compartment of the freezing chamber. Furthermore, those skilled in the art can select different combinations of refrigeration chambers 1000 according to actual needs, thereby forming a refrigeration device with diverse functions, which is not limited here.

[0056] Continue reading Figure 1 and Figure 2 As shown, the return air duct 1004 can be designed to be located on the rear wall of the refrigeration chamber 1000. For example, when the refrigeration chamber 1000 provided in this application (i.e. the first refrigeration chamber 1000 mentioned above) is configured as a freezer chamber, the return air duct 1004 located on the rear wall of the freezer chamber can facilitate the formation of air supply and return air circulation with the refrigeration chamber without occupying too much food storage space in the freezer room.

[0057] Furthermore, a portion of the interior of the evaporation chamber 1002 can be designated as a refrigeration zone, configured to house the evaporator 2000. Other areas within the evaporation chamber 1002 are used to guide the flow of cold air. For example, the distance between the refrigeration zone and the chamber inlet of the evaporation chamber 1002 is less than the distance to the chamber outlet. After cold air is generated, it travels a certain distance before exiting through the chamber outlet. The return air, being at a higher temperature, enters the evaporation chamber 1002 through the chamber inlet and quickly reaches the refrigeration zone where the evaporator 2000 is located for cooling. Additionally, the supply air vent 1005 is positioned higher than the return air vent 1006 within the refrigeration chamber 1000. The return air, being relatively warm (e.g., from 5 degrees Celsius to -20 degrees Celsius), may condense and easily freeze. Heating elements, such as heating pipes, can be installed near the evaporator to alleviate icing.

[0058] Regarding the design of the return air channel 1004 in the refrigeration box liner 1000, those skilled in the art can implement it based on various design methods. For example, in one embodiment, a return air cover 1100 can be provided on the inner wall of the refrigeration box liner 1000. When the return air cover 1100 covers the inner wall of the refrigeration box liner 1000, the space enclosed between the inner side wall of the return air cover 1100 and the inner wall of the refrigeration box liner 1000 can be configured to form the return air channel 1004. In one embodiment, see [reference needed]. Figure 3As shown, the inner wall of the refrigeration chamber 1000 can also be provided with an air duct groove 1200, and a return air cover 1100 is provided on the air duct groove 1200. The inner side wall of the return air cover 1100 and the air duct groove 1200 are configured to form a return air channel 1004.

[0059] In the above design, if the inner wall of the refrigeration chamber liner 1000 has an air duct groove 1200, it may lead to a reduction in the wall thickness of the refrigeration chamber liner 1000 to a certain extent. Therefore, if... Figure 4 As shown, compared to Figure 3 The air duct groove 1200 shown is in a state where a heat insulation structure 1300 can also be installed inside the air duct groove 1200. The purpose of the heat insulation structure 1300 is to enhance the cold air insulation effect and prevent the cold air from being conducted outward.

[0060] For example, in one embodiment, the heat insulation structure 1300 can be configured to adopt a padding structure, and the material can be selected as PE cotton (polyethylene cotton) or other materials with heat insulation effect. According to the cold air insulation requirements and the design structure of the air duct groove 1200, the padding structure can be selected to be set in at least a part of the inner wall of the air duct groove 1200. For example, the area where the opening of the air duct groove 1200 causes the thickness of the inner wall to be reduced can be provided with a padding structure. When the thickness reduction is large, the thickness of the padding structure can be adaptively increased. Those skilled in the art can construct a suitable heat insulation solution according to actual needs, which is not limited here.

[0061] Furthermore, regardless of whether the inner wall of the refrigeration chamber 1000 has an air duct groove 1200, in one embodiment, see [reference] Figure 5 As shown, the return air cover 1100 can be configured as a curved panel with a certain curvature design, so that the inner sidewall of the return air cover 1100 has a cover plate recess 1101. The space enclosed by the cover plate recess 1101 of the return air cover 1100 and the air duct groove 1200 forms the aforementioned return air channel 1004. It can be seen that there are many ways to integrate the return air channel 1004 in the refrigeration box liner 1000. Those skilled in the art can choose, but are not limited to, the methods mentioned above, to integrate the return air channel 1004 in the refrigeration box liner 1000 to achieve the technical purpose of transferring the return air channel 1004 from the foaming layer to the refrigeration box liner 1000. No limitation is made here.

[0062] Regarding the design of the dimensions of the return air duct 1004, this application also has certain design requirements. For example, in one embodiment, the return air duct 1004 is limited to having a duct width and a duct height. In this case, the duct width and duct height of the return air duct 1004 can be reflected according to a certain orientation of the refrigeration box liner 1000. For example, the duct height can be the distance from the rear wall of the liner, thereby leading to the corresponding duct width. Those skilled in the art can limit the duct width and duct height of the return air duct 1004 according to a suitable spatial orientation.

[0063] The purpose of defining the return air duct 1004 with a duct width and a duct height is to limit the approximate variation of the return air duct 1004 based on the duct width and duct height of the return air duct 1004. For example, from the duct inlet of the return air duct 1004 to the duct outlet of the return air duct 1004, the duct width of at least a portion of the duct section or the duct width of all the duct sections of the return air duct 1004 can be designed to gradually increase, and the duct height of at least a portion of the duct section or the duct height of all the duct sections of the return air duct 1004 can be designed to gradually decrease.

[0064] like Figure 2 As shown, this can be roughly formed in the return air duct 1004 as a region that is more convex near the duct entrance and gradually flattens towards the duct exit. When the return air enters from the duct entrance of the return air duct 1004, it can be smoothly received based on the more convex spatial structure. When the return air flows towards the duct exit in the return air duct 1004, it can gradually slow down based on the simple spatial structure until it reaches the evaporator 2000.

[0065] However, the cross-sectional area of ​​the return air duct 1004 needs to remain constant throughout the entire return air duct 1004. For example, in one embodiment, the cross-sectional area of ​​the return air duct 1004 is between 800 square millimeters and 1200 square millimeters, and the specific cross-sectional area of ​​the return air duct 1004 can be selected as 800 square millimeters, 900 square millimeters, 1000 square millimeters, 1100 square millimeters, 1200 square millimeters, etc. Moreover, the width and height of the return air duct 1004 are both smaller than the width and height of the evaporation chamber 1002, making the internal space dimension of the return air duct 1004 smaller than the three-dimensional dimension of the evaporator 2000.

[0066] Regarding the construction method of the aforementioned storage compartment 1001, evaporation chamber 1002, air supply duct 1003, and other spaces within the refrigeration unit chamber, reference can be made to the designs in related technical solutions. In this application, for example, in one embodiment, the refrigeration unit chamber 1000 may be equipped with a compartment partition 1400 and an air duct cover 1500, such as... Figure 2As shown, the partition 1400 and return air cover 1100 are configured to separate the evaporation chamber 1002, while the partition 1400 and duct cover 1500 are configured to separate the air supply duct 1003. Based on the arrangement of the partition 1400, duct cover 1500, and return air cover 1100 within the inner chamber, the inner chamber can be divided into spatial structures with different functions, such as a storage chamber 1001, an evaporation chamber 1002, an air supply duct 1003, and a return air duct 1004. Those skilled in the art can also construct these spaces in other ways, which are not limited here.

[0067] Continue reading Figure 5 and Figure 6 As shown, the return air cover 1100 is assembled to the inner wall of the refrigeration chamber liner 1000 based on the snap-fit ​​assembly 1600. For example, the snap-fit ​​assembly 1600 has several snap-fit ​​parts, which are distributed at several different positions on the return air cover 1100. For example, several snap-fit ​​parts are provided along the edge of the return air cover 1100. The return air cover 1100 forms a snap-fit ​​assembly with the inner wall of the refrigeration chamber liner 1000 by means of the snap-fit ​​capability of the snap-fit ​​parts. Alternatively, the return air cover 1100 can also be assembled to the inner wall of the refrigeration chamber liner 1000 based on the threaded assembly 1700. For example, the threaded assembly 1700 has several threaded parts, which are distributed at several different positions on the return air cover 1100. The return air cover 1100 forms a threaded connection with the inner wall of the refrigeration chamber liner 1000 by means of the threaded assembly capability of the threaded parts.

[0068] Continue reading Figure 2 and Figure 6 As shown, the outer wall of the return air cover 1100 can face the evaporation chamber 1002. In this assembled state, the outer wall of the return air cover 1100 can be used to install the mounting assembly 1800. The evaporator 2000 is installed using the mounting assembly 1800, thus forming a certain degree of relative assembly between the evaporator 2000 and the return air cover 1100 when the evaporator 2000 is installed in the evaporation chamber 1002. The mounting assembly 1800 can achieve the installation function using various methods such as snap-fit, threaded connection, and adhesive bonding; no limitation is made here.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A refrigeration box liner (1000), characterized in that, The interior of the refrigeration box (1000) has a box chamber, which includes a storage chamber (1001), an evaporation chamber (1002), an air supply channel (1003), and a return air channel (1004). The wall of the refrigeration box (1000) is provided with an air supply port (1005) and a return air port (1006). The inlet of the air supply duct (1003) is connected to the outlet of the evaporation chamber (1002), and the outlet of the air supply duct (1003) is connected to the storage chamber (1001); wherein, the air outlet (1005) is connected to the air supply duct (1003), and the air outlet (1005) is configured to supply air to the outside of the refrigeration chamber (1000); The return air inlet (1006) is configured to receive return air from outside the refrigeration chamber (1000), the inlet of the return air duct (1004) is connected to the return air inlet (1006), and the outlet of the return air duct (1004) is connected to the inlet of the evaporation chamber (1002).

2. The refrigeration chamber liner (1000) according to claim 1, characterized in that, The refrigeration chamber (1000) is configured as a freezer chamber, the storage compartment (1001) of the refrigeration chamber (1000) is a freezer compartment, the air outlet (1005) is configured to supply air to the freezer compartment of the refrigeration chamber, and the return air outlet (1006) is configured to receive the return air from the freezer compartment of the refrigeration chamber. And / or, The return air duct (1004) is located on the rear wall of the refrigeration chamber (1000); And / or, The evaporation chamber (1002) has a cooling area inside, which is configured to house an evaporator (2000). The distance of the cooling area from the chamber entrance of the evaporation chamber (1002) is less than the distance from the chamber exit of the evaporation chamber (1002). And / or, The air supply outlet (1005) is positioned higher than the return air outlet (1006) in the refrigeration chamber (1000).

3. The refrigeration chamber liner (1000) according to claim 1, characterized in that, The inner wall of the refrigeration chamber (1000) is provided with a return air cover (1100), and the inner side wall of the return air cover (1100) and the inner wall of the refrigeration chamber (1000) are configured to form the return air channel (1004).

4. The refrigeration chamber liner (1000) according to claim 3, characterized in that, The inner wall of the refrigeration chamber (1000) has an air duct groove (1200), and the return air cover (1100) is placed over the air duct groove (1200). The inner side wall of the return air cover (1100) and the air duct groove (1200) are configured to form the return air channel (1004).

5. The refrigeration chamber liner (1000) according to claim 4, characterized in that, The return air cover (1100) is configured as a curved panel, and the inner sidewall of the return air cover (1100) has a cover recess (1101). The cover recess (1101) of the return air cover (1100) and the air duct groove (1200) are configured to form the return air passage (1004); and / or, A heat insulation structure (1300) is provided inside the air duct groove (1200).

6. The refrigeration chamber liner (1000) according to claim 5, characterized in that, The thermal insulation structure (1300) is configured to employ a padding structure, the padding structure being disposed in at least a portion of the inner wall of the duct recess (1200); and / or, The insulation structure (1300) is configured to use polyethylene cotton.

7. The refrigeration chamber liner (1000) according to claim 3, characterized in that, The return air duct (1004) has a duct width and a duct height. From the duct inlet to the duct outlet of the return air duct (1004), the duct width of at least a portion of the duct segment gradually increases, and the duct height of at least a portion of the duct segment gradually decreases, wherein the cross-sectional area of ​​the duct section of the return air duct (1004) remains unchanged.

8. The refrigeration chamber liner (1000) according to claim 7, characterized in that, The cross-sectional area of ​​the return air duct (1004) is between 800 square millimeters and 1200 square millimeters; and / or, The width and height of the return air duct (1004) are both smaller than the width and height of the evaporation chamber (1002).

9. The refrigeration chamber liner (1000) according to claim 3, characterized in that, The refrigeration chamber (1000) is provided with a compartment partition (1400) and an air duct cover (1500) in its chamber. The compartment partition (1400) and the return air cover (1100) are configured to separate the evaporation chamber (1002), and the compartment partition (1400) and the air duct cover (1500) are configured to separate the air supply duct (1003). And / or, The return air cover (1100) is assembled to the inner wall of the refrigeration box liner (1000) based on the snap-fit ​​assembly (1600); And / or, The return air cover (1100) is assembled to the inner wall of the refrigeration box liner (1000) based on a threaded assembly (1700); And / or, The outer wall of the return air cover (1100) faces the evaporation chamber (1002), and the outer wall of the return air cover (1100) is provided with a mounting assembly (1800), which is configured to mount an evaporator (2000).

10. A refrigeration device, characterized in that, The refrigeration equipment includes a refrigeration chamber (1000) as described in any one of claims 1-9.

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