Box container assembly and refrigeration equipment

Abstract

The utility model discloses a box liner assembly and refrigeration equipment, and belongs to the technical field of household appliances. The refrigerator container assembly comprises a container shell, an air duct component and an evaporator, the container shell is provided with a chamber, the container shell is provided with an air return opening, and the air return opening communicates with the chamber; the air duct component is connected with the container shell and provided with an air supply outlet and an air return duct, the air supply outlet communicates with the chamber, and the air return duct communicates with the air supply outlet and the air return inlet; the evaporator is arranged in the air return duct and located at the bottom of the container shell. The multiple air return openings are distributed in the bottom wall of the container shell to form an air return area, the air return area and the evaporator are sequentially arranged in the front-back direction of the container shell, the two ends of the air return area are arranged in the width direction of the container shell, and at least one end of the air return area extends in the front-back direction of the container shell. According to the refrigerator liner assembly, the area of the air return face is increased, the air return amount is increased, the refrigerating cycle efficiency of the refrigerator liner assembly is improved, the energy consumption of the refrigerator liner assembly is reduced, and the refrigerating effect of the refrigerator liner assembly is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a box liner component and a refrigeration device. Background Art

[0002] At present, the function of integrating refrigerator products with home furnishings is becoming more and more important, and the embedded size of the refrigerator should match the size of the cabinet as much as possible. Among them, the depth of the refrigerator is the most important, and the depth has the most obvious impact on the spatial size of the interior decoration. Therefore, when the evaporator is placed on the back on embedded refrigerator products, it will affect the user experience. In the related technology, the design layout of placing the evaporator horizontally on the bottom side of the shell can be beneficial to expanding the volume, but due to the change in the position of the evaporator, the return air surface of the compartment needs to be rearranged. Especially for refrigerator products with a front compressor, the return air surface size design is easily restricted by the compressor compartment, resulting in a smaller return air surface, which affects the energy efficiency and refrigeration effect of the refrigerator. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a box liner assembly, whose return air area can adapt to the design layout of the evaporator placed horizontally at the bottom of the liner shell, thereby increasing the return air surface area and improving the cooling effect.

[0004] The utility model also provides a refrigeration device comprising the box liner assembly.

[0005] According to the first aspect of the present invention, the box gall assembly comprises: a gall shell, an air duct component and an evaporator, the gall shell having a compartment, the gall shell being provided with a return air port, the return air port being communicated with the compartment; the air duct component being connected to the gall shell, the air duct component being provided with an air supply port and a return air duct, the air supply port being communicated with the compartment, the return air duct communicating the air supply port and the return air port; the evaporator being arranged in the return air duct and being located at the bottom of the gall shell; wherein a plurality of return air ports are provided, the plurality of return air ports are distributed on the bottom wall of the gall shell to form a return air area, the return air area and the evaporator being arranged in sequence along the front-to-back direction of the gall shell, the two ends of the return air area being arranged along the width direction of the gall shell, and at least one end extending toward the front-to-back direction of the gall shell.

[0006] The refrigeration device according to the embodiment of the utility model has at least the following beneficial effects:

[0007] The air duct component of the box gall assembly of the utility model embodiment is provided with a return air duct, and the return air duct is connected to the compartment through the air supply port and the return air port, wherein the evaporator is arranged in the return air duct and is located at the bottom of the gall shell, realizing the design layout of the evaporator being placed horizontally at the bottom of the gall shell; a plurality of return air ports are distributed on the bottom wall of the gall shell to form a return air area, the return air area and the evaporator are arranged in sequence along the front-to-back direction of the gall shell, and the two ends of the return air area are arranged along the width direction of the gall shell, thereby reducing the possibility of the evaporator blocking the return air area, so that the setting of the return air area can adapt to the design layout of the evaporator being placed horizontally at the bottom of the gall shell; and then at least one end of the return air area is extended along the front-to-back direction of the gall shell to expand the return air area, increase the return air surface area, allow more air in the compartment to pass through the return air area, increase the return air volume, help to improve the efficiency of the refrigeration cycle of the box gall assembly, and improve the refrigeration effect, which is suitable for refrigeration equipment such as refrigerators.

[0008] According to some embodiments of the utility model, the portion of the return air area extending toward the evaporator is an extension zone, and a first thermal insulation layer is provided between the evaporator and the gall shell, the first thermal insulation layer is attached to the bottom surface of the gall shell and covers the upper surface of the evaporator, and the first thermal insulation layer is provided with a notch connected to the extension zone at at least one end along the width direction of the gall shell.

[0009] According to some embodiments of the utility model, the bottom wall of the gallbladder shell is provided with a detachable bottom plate, the return air area is formed at the front of the bottom plate, the expansion area is arranged along the side edge of the bottom plate, and the first thermal insulation layer is attached to the bottom surface of the bottom plate.

[0010] According to some embodiments of the utility model, the air duct component includes a bottom shell, the bottom shell is connected to the bottom of the gallbladder shell, the return air duct is formed between the bottom shell and the gallbladder shell, the evaporator is fixedly connected to the bottom shell, and the bottom shell is provided with a drainage hole.

[0011] According to some embodiments of the present utility model, the cross-sectional shape of the return air outlet is a circle or a regular polygon, and the cross-sectional area of ​​the return air outlet is smaller than the cross-sectional area of ​​the drainage hole.

[0012] According to some embodiments of the utility model, the air duct component includes an air supply structure arranged on the back of the gallbladder shell, the air supply structure is provided with an air supply duct, the air supply port is formed on a side of the air supply structure facing the compartment, a fan is provided in the air supply duct, and the air supply duct connects the air supply port and the return air duct.

[0013] According to some embodiments of the utility model, the air supply structure is fixedly connected to the gallbladder shell, the back wall of the gallbladder shell is provided with a detachable back plate, the back plate and the bottom plate are an integrally formed structure, and the back plate is buckled to the air supply structure.

[0014] According to some embodiments of the utility model, a peripheral edge is provided on the edge of the back plate facing the air supply structure, a channel is formed between the peripheral edge, the back plate and the air supply structure, the air supply port is located at the upper part of the air supply structure, an air inlet is provided at the lower part of the air supply structure, and the channel connects the air inlet and the return air duct.

[0015] According to some embodiments of the utility model, a second insulation layer is provided on the side of the back plate facing the channel, and the lower end of the second insulation layer is arranged toward the air supply duct so that the second insulation layer covers the end of the first insulation layer.

[0016] According to some embodiments of the present invention, the first thermal insulation layer is a foam board, and the second thermal insulation layer is foam cotton.

[0017] According to some embodiments of the utility model, a mating surface is provided at the end of the surrounding edge away from the back plate, and the mating surface is in contact with the surface of the air supply structure, and the width of the mating surface ranges from 15 mm to 20 mm.

[0018] According to some embodiments of the present utility model, a third thermal insulation layer is provided between the matching surface and the air supply structure, and the third thermal insulation layer is foam.

[0019] The refrigeration device according to the second embodiment of the utility model includes the box liner assembly described in the first embodiment.

[0020] The refrigeration device according to the embodiment of the utility model has at least the following beneficial effects:

[0021] The refrigeration device adopts the box gall assembly of the first embodiment of the present invention, and the air duct component of the box gall assembly in the refrigeration device is provided with a return air duct, and the return air duct is connected to the compartment through the air supply port and the return air port, wherein the evaporator is arranged in the return air duct and is located at the bottom of the gall shell, thereby realizing the design layout of the evaporator being placed horizontally at the bottom of the gall shell; a plurality of return air ports are distributed on the bottom wall of the gall shell to form a return air area, and the return air area and the evaporator are arranged in sequence along the front-to-back direction of the gall shell, and the two ends of the return air area are arranged along the width direction of the gall shell, thereby reducing the possibility of the evaporator blocking the return air area, so that the setting of the return air area can adapt to the design layout of the evaporator being placed horizontally at the bottom of the gall shell; and then at least one end of the return air area is extended along the front-to-back direction of the gall shell, thereby expanding the return air area and increasing the return air surface area, so that more air in the compartment can pass through the return air area, thereby increasing the return air volume, and helping to improve the efficiency of the refrigeration cycle of the refrigeration device, so that the refrigeration effect of the refrigeration device is improved.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is an overall schematic diagram of a box liner assembly according to an embodiment of the utility model;

[0025] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 This is a front view of a box liner assembly according to an embodiment of the utility model;

[0027] Figure 4 for Figure 3 Schematic diagram of the cross section in the BB direction;

[0028] Figure 5 It is a schematic diagram of the local structure when the air supply structure of one embodiment of the utility model is connected to the back plate;

[0029] Figure 6 for Figure 5 Enlarged view of point E in the middle;

[0030] Figure 7 for Figure 5 The enlarged view of F in the middle;

[0031] Figure 8 It is a schematic diagram of the local structure when the first thermal insulation layer is connected to the bottom plate in one embodiment of the utility model;

[0032] Fig. 9 This is a schematic structural diagram of a rear cover plate according to an embodiment of the utility model;

[0033] Fig.10 This is a schematic structural diagram of a front cover plate according to an embodiment of the utility model;

[0034] Fig.11 for Figure 4 The enlarged view of point D in the middle;

[0035] Fig.12 for Figure 3 Schematic diagram of the cross section in the CC direction;

[0036] Fig.13 for Fig.12 Enlarged view of point G in the middle.

[0037] Figure Number:

[0038] Tank assembly 1000;

[0039] Gallbladder shell 100; compartment 110; bottom plate 120; mounting hole 121; back plate 130; surrounding edge 131; mating surface 1311; second thermal insulation layer 132; second buckle 133; third thermal insulation layer 134;

[0040] Air duct component 200; return air outlet 210; return air area 211; main area 2111; expansion area 2112; left expansion area 2113; right expansion area 2114; return air duct 220; channel 230; air supply duct 240; air supply structure 241; front cover 250; air supply outlet 251; air inlet 252; clamping portion 253; positioning column 254; rear cover 260; fixing portion 261; avoidance groove 262; clamping groove 263; positioning groove 264; second buckle position 265; air guide plate 270; bottom shell 280; drainage hole 281;

[0041] Evaporator 300; first heat-insulating layer 310; notch 311; left notch 3111; right notch 3112;

[0042] Fan 400;

[0043] The clamping structure 500; the first clamping buckle 510; the first buckling position 520;

[0044] Drawer 600. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0048] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0049] In the related art, in order to increase the volume of the compartment without increasing the size of the box liner assembly, the design layout of placing the evaporator horizontally on the bottom side of the liner shell is usually adopted. In order to solve the problem of how to increase the return air surface area, it is usually achieved by expanding the return air area. However, the bottom-mounted evaporator will limit the expansion direction of the return air area. In addition, in order to achieve a better heat dissipation effect for the built-in refrigerator, the compressor is placed at the bottom of the liner shell and on one side of the evaporator, which further limits the expansion direction of the return air area.

[0050] To this end, some embodiments of the present invention provide a box liner assembly 1000, which is suitable for refrigeration equipment such as refrigerators. Figures 1 to 13 The tank assembly 1000 is shown for illustration.

[0051] Reference Figure 1 , Figure 3 and Figure 4 As shown, in the embodiment of the present utility model, the box liner assembly 1000 includes: a liner shell 100, an air duct component 200 and an evaporator 300, wherein, with reference to Figure 1 and Figure 4 As shown, the gallbladder shell 100 is a hollow structure, and has a chamber 110 inside. It is understandable that the chamber 110 can be a whole, or can be composed of two or more interconnected chambers. For example, the chamber 110 can include a temperature-changing chamber and a freezing chamber spaced apart along the height direction of the gallbladder shell 100. It should be noted that the height direction of the gallbladder shell 100 is consistent with the up-down direction of the gallbladder shell 100.

[0052] Reference Figure 1 and Figure 4 As shown, in the embodiment of the utility model, the air supply port 251 connected to the compartment 110 is used to deliver the cold air after the freezing treatment to the compartment 110, so as to maintain the low temperature state of the compartment 110. The bottom of the gallbladder shell 100 is provided with a return air port 210 connected to the compartment 110, so as to return the air in the compartment 110 through the return air port 210, and the return air flow is re-sent into the compartment 110 after the heat exchange treatment, so as to realize the air circulation and circulation of the compartment 110. In the present embodiment, along the height direction of the gallbladder shell 100, the air supply port 251 is located at the oblique upper side of the return air port 210.

[0053] Reference Figure 1 and Figure 3 As shown, in an embodiment of the utility model, the air duct component 200 is arranged on the rear side of the gallbladder shell 100, and the air duct component 200 is fixedly connected to the gallbladder shell 100. Specifically, the air duct component 200 and the gallbladder shell 100 can be connected by fasteners (not shown in the figure), and can also be connected by other fixed connection methods such as riveting or welding.

[0054] Reference Figure 4 As shown, in an embodiment of the utility model, the air duct component 200 is provided with an air supply duct 240 and a return air duct 220 which are interconnected, wherein the return air duct 220 is located at the bottom of the gallbladder shell 100 and is connected to the return air port 210, and the evaporator 300 is arranged in the return air duct 220. Based on this, the air in the compartment 110 enters the return air duct 220 through the return air port 210 at the bottom of the gallbladder shell 100, and the evaporator 300 performs heat exchange on the air and converts it into cold air. The air supply duct 240 is located at the back of the gallbladder shell 100, and the fan 400 is arranged in the air supply duct 240. One end of the air supply duct 240 is connected to the return air duct 220, and the other end is connected to the air supply port 251. Therefore, the cold air in the return air duct 220 passes through the return air duct 220 and enters the compartment 110 through the air supply port 251 under the suction action of the fan 400. It should be noted that, Figure 4 The dotted frame only selects partial areas of the supply air duct 240 and the return air duct 220 , and the selected parts do not represent the entire supply air duct 240 and the return air duct 220 .

[0055] Reference Figure 1 , Figure 2 and Figure 4 As shown, in the embodiment of the utility model, a plurality of return air ports 210 are provided, and the plurality of return air ports 210 are distributed on the bottom wall of the gallbladder shell 100 to form a return air region 211. The return air region 211 and the evaporator 300 are sequentially arranged along the front-to-back direction of the gallbladder shell 100. Specifically, the return air region 211 is located obliquely above the evaporator 300, and the projection of the return air region 211 in the height direction of the gallbladder shell 100 does not overlap with the projection of the evaporator 300 in the height direction of the gallbladder shell 100. Therefore, the evaporator 300 does not block the return air of the return air region 211, thereby ensuring the return air volume of the return air region 211.

[0056] Reference Figure 1 and Figure 2As shown, in the embodiment of the utility model, the two ends of the return air area 211 are arranged along the width direction of the gallbladder shell 100. Specifically, the right end of the return air area 211 is located on the upper right side of the evaporator 300, and the left end of the return air area 211 is located on the upper left side of the evaporator 300. In this embodiment, since the return air area 211 and the evaporator 300 are arranged in sequence along the front and rear direction of the gallbladder shell 100. It should be noted that in this embodiment, the compressor is arranged at the bottom of the gallbladder shell 100 and is located on the front side of the evaporator 300. In order to avoid the compressor blocking the return air area 211, the end of the return air area 211 is configured to extend backward. In one example, only the left end of the return air area 211 is extended backward; in another example, only the right end of the return air area 211 is extended backward; in another example, the left end and the right end of the return air area 211 are respectively extended backward. It can be understood that the expansion of the return air area 211 can be selected and set according to the return air volume required in actual conditions.

[0057] The box liner assembly 1000 of the embodiment of the utility model is extended along the front-to-back direction of the liner shell 100 through at least one end of the return air area 211, thereby expanding the return air area 211 and increasing the return air surface area. More air in the compartment 110 can pass through the return air area 211, thereby increasing the return air volume, helping to improve the efficiency of the refrigeration cycle of the box liner assembly 1000 and ensuring the refrigeration effect of the box liner assembly 1000. It is specifically suitable for refrigerator products with a front compressor.

[0058] Reference Figure 4 As shown, in the embodiment of the utility model, the evaporator 300 is arranged in the return air duct 220, which means that the evaporator 300 is arranged at the lower side of the gallbladder shell 100, and the evaporator 300 is horizontally placed in the return air duct 220 along the front-to-back direction of the gallbladder shell 100, making full use of the space below the gallbladder shell 100 and reducing the longitudinal dimension of the box gallbladder assembly 1000. The fan 400 is arranged at the rear side of the gallbladder shell 100. It can be understood that the dimension of the fan 400 along the front-to-back direction of the gallbladder shell 100 is small, so the fan 400 is placed at the back of the gallbladder shell 100 to reduce the depth dimension of the box gallbladder assembly 1000. In this embodiment, the fan 400 and the evaporator 300 are spaced apart along the front-to-back direction of the gall shell 100, and the installation height of the fan 400 relative to the bottom of the gall shell 100 is greater than the installation height of the evaporator 300, thereby reducing the space occupied by the air duct component 200, the evaporator 300 and the fan 400, efficiently utilizing the space of the box gall assembly 1000, and facilitating increasing the volume of the compartment 110.

[0059] It should be noted that the installation height of the fan 400 can be understood as the height of the position where the fan 400 is installed. Similarly, the installation height of the evaporator 300 can be understood as the height of the position where the evaporator 300 is installed. Figure 4As shown, relative to the bottom of the gallbladder shell 100, the installation height of the fan 400 is greater than the installation height of the evaporator 300. Specifically, after the box gallbladder assembly 1000 is assembled, along the height direction of the gallbladder shell 100, the bottom end height of the fan 400 is higher than the bottom end height of the evaporator 300, and the top end height of the fan 400 is higher than the top end height of the evaporator 300. In this embodiment, the projection of the fan 400 in the front-to-back direction of the gallbladder shell 100 and the projection of the evaporator 300 in the front-to-back direction of the gallbladder shell 100 may not overlap or may partially overlap, and this embodiment is not limited thereto.

[0060] The layout of the box liner assembly 1000 of this embodiment is more reasonable and compact, which not only improves the space utilization, but also minimizes the depth and longitudinal dimensions of the box liner assembly 1000. It should be noted that the depth dimension of the box liner assembly 1000 is the dimension of the box liner assembly 1000 along the front-to-back direction of the liner shell 100, and the longitudinal dimension of the box liner assembly 1000 is the dimension of the box liner assembly 1000 along the height direction of the liner shell 100. Reasonable control of the depth and longitudinal dimensions of the box liner assembly 1000 can ensure that the internal layout of the refrigeration equipment is reasonable and compact, so that the refrigeration equipment meets the requirements of embedded design and improves the universality of the refrigeration equipment. In addition, on the basis of maintaining the size of the box liner assembly 1000, reducing the space occupied by the air duct component 200, the evaporator 300 and the fan 400 can increase the volume of the compartment 110 and reduce the waste of the internal space of the box liner assembly 1000.

[0061] Reference Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the portion of the return air area 211 extending along the front-to-back direction of the gallbladder shell 100 is the expansion area 2112. It can be understood that the return air area 211 includes a main area 2111 arranged along the width direction of the gallbladder shell 100 and an expansion area 2112 extending along the front-to-back direction of the gallbladder shell 100. In this embodiment, the left end and the right end of the main area 2111 are respectively provided with a left expansion area 2113 and a right expansion area 2114, wherein the left expansion area 2113 is located on the left side of the evaporator 300, the right expansion area 2114 is located on the right side of the evaporator 300, and the main area 2111 is located on the front side of the evaporator 300.

[0062] Since the air temperature in the return air duct 220 is lower than the air temperature on the bottom wall of the gallbladder shell 100, condensation water is easily generated on the end of the bottom wall of the gallbladder shell 100 facing the return air duct 220. In order to reduce the possibility of condensation water dripping onto the evaporator 300, refer to Figure 4 , Figure 5 and Figure 8As shown, a first thermal insulation layer 310 is provided between the evaporator 300 and the gallbladder shell 100, and the first thermal insulation layer 310 is attached to the bottom surface of the gallbladder shell 100 and covers the upper surface of the evaporator 300. In this embodiment, the size of the first thermal insulation layer 310 is set to be slightly larger than the size of the evaporator 300, so that the projection surface of the first thermal insulation layer 310 in the height direction of the gallbladder shell 100 completely overlaps with the evaporator 300, thereby achieving complete coverage of the upper surface of the evaporator 300, not only separating the bottom wall of the gallbladder shell 100 from the evaporator 300, reducing the contact area between the bottom wall of the gallbladder shell 100 and the return air duct 220, reducing the generation of condensed water, but also preventing the condensed water on the bottom wall of the gallbladder shell 100 from dripping directly onto the evaporator 300.

[0063] Reference Figure 5 and Figure 6 As shown, in the embodiment of the utility model, at least one end of the first insulation layer 310 along the width direction of the gallbladder shell 100 is provided with a notch 311 connected to the expansion area 2112. It can be understood that at least one end of the notch 311 is arranged in a one-to-one correspondence with at least one expansion area 2112. Specifically, referring to Figure 6 and Figure 8 As shown, taking the case where the left expansion area 2113 and the right expansion area 2114 are respectively provided at the two ends of the main area 2111 as an example, a left notch 3111 is provided at the left end of the first thermal insulation layer 310 at a position located below the left expansion area 2113, and a right notch 3112 is provided at the right end of the first thermal insulation layer 310 at a position located below the right expansion area 2114. The provision of the notch 311 can reduce the possibility of the first thermal insulation layer 310 blocking the expansion area 2112, thereby avoiding the return air of the return air port 210 in the expansion area 2112, and ensuring that the return air area 211 has sufficient return air volume. In this embodiment, the first thermal insulation layer 310 is a foam board. It can be understood that the foam has good thermal insulation performance. In addition, the foam material is inexpensive and easy to process. Whether the first thermal insulation layer 310 with the notch 311 is formed by an integral molding method or the first thermal insulation layer 310 with the notch 311 is formed by cutting the foam piece, the processing can be completed easily and quickly.

[0064] Reference Figure 1 and Figure 2As shown, in the embodiment of the utility model, the bottom wall of the gallbladder shell 100 is provided with a bottom plate 120, and the bottom plate 120 is detachably connected to the bottom wall of the gallbladder shell 100. Specifically, the bottom plate 120 and the gallbladder shell 100 can be connected by fasteners (not shown in the figure), and can also be connected by other fixed connection methods such as riveting or welding. In one example, the fastener is a screw, the gallbladder shell 100 is provided with a screw hole that can be matched with the screw thread, and the bottom plate 120 is provided with a mounting hole 121 connected to the screw hole. Based on this, the fastener can be inserted into the mounting hole 121 and matched with the screw hole of the gallbladder shell 100 to achieve a fastened connection in a threaded connection. It should be noted that the fastener is not limited to screws, but can also be rivets, etc. The bottom plate 120 and the gallbladder shell 100 can be selected and set according to actual conditions, and this embodiment does not limit this. In this embodiment, the return air area 211 is formed at the front of the bottom plate 120 , the rear of the bottom plate 120 is located on the upper side of the evaporator 300 , and the expansion area 2112 is disposed along the side edge of the bottom plate 120 .

[0065] Reference Figure 4 and Figure 5 As shown, the first thermal insulation layer 310 and the evaporator 300 are arranged on the bottom surface of the base plate 120 from top to bottom, that is, the upper end of the first thermal insulation layer 310 is attached to the bottom surface of the base plate 120, and the lower end is attached to the upper end surface of the evaporator 300, thereby separating the base plate 120 and the evaporator 300, reducing the contact area between the base plate 120 and the return air duct 220, reducing the generation of condensed water, and preventing the condensed water on the base plate 120 from dripping directly to the evaporator 300.

[0066] Reference Figure 1 , Figure 3 and Figure 4 As shown, in the embodiment of the utility model, the air duct component 200 includes a bottom shell 280, which is arranged below the rear part of the bottom wall of the gallbladder shell 100, and the space below the front part of the bottom wall of the gallbladder shell 100 is used to install the compressor, that is, the compressor and the bottom shell 280 are arranged in sequence along the front and rear direction of the gallbladder shell 100. The bottom shell 280 is connected to the bottom of the gallbladder shell 100. In this embodiment, the bottom shell 280 and the bottom wall of the gallbladder shell 100 can define a return air duct 220, and the evaporator 300 is arranged between the bottom shell 280 and the bottom wall of the gallbladder shell 100, and specifically, the evaporator 300 is fixedly connected to the bottom shell 280.

[0067] It is understandable that condensed water is easily generated at the position near the return air area 211 in the bottom plate 120, and the generated condensed water will enter the return air duct 220 through the return air port 210. In order to prevent the condensed water from accumulating in the return air duct 220, refer to Figure 1 , Figure 3 and Figure 4As shown, in the embodiment of the utility model, the bottom shell 280 is provided with a drainage hole 281 , and the drainage hole 281 is connected to the return air duct 220 , so that the condensed water dripping on the bottom wall of the bottom shell 280 can be discharged through the drainage hole 281 .

[0068] In order to prevent the condensed water dripping on the bottom wall of the bottom case 280 from flowing toward the evaporator 300, refer to Figure 4 As shown, in the embodiment of the utility model, the bottom wall of the bottom shell 280 is tilted downward toward the drainage hole 281. It can be understood that the condensed water dripping on the bottom wall of the bottom shell 280 can flow toward the drainage hole 281 under the action of gravity and be discharged from the return air duct 220.

[0069] Reference Figure 3 As shown, in an embodiment of the utility model, the shape of the bottom shell 280 is high at the left and right ends and low in the middle. Based on this, the drainage hole 281 is arranged in the middle of the bottom shell 280. It can be understood that the condensed water dripping on the left and right ends of the bottom wall of the bottom shell 280 can flow toward the middle of the bottom shell 280 under the action of gravity and be discharged from the return air duct 220.

[0070] In order to prevent the condensed water entering the return air duct 220 through the return air port 210 from dripping to the front end of the first insulation layer 310 and adhering to the surface of the first insulation layer 310 and flowing toward the evaporator 300, refer to Figure 6 As shown, in an embodiment of the utility model, one end surface of the notch 311 toward the expansion zone 2112 is inclined forward and downward. It can be understood that the condensed water dripping on the end surface of the notch 311 toward the expansion zone 2112 can flow forward under the action of gravity, and drip onto the bottom wall of the bottom shell 280, and finally flow to the drain port and be discharged from the return air duct 220.

[0071] For ease of processing, refer to Figure 2 and Figure 6 As shown, in the embodiment of the utility model, the cross-sectional shape of the return air port 210 is a circle or a regular polygon, thereby reducing the difficulty of processing the return air port 210 and improving the production efficiency of the bottom plate 120. When the condensed water generated at the bottom plate 120 is large, in order to ensure that the drainage flow of the drainage hole 281 is greater than the water flow through the return air port 210, in this embodiment, the cross-sectional area of ​​the return air port 210 is smaller than the cross-sectional area of ​​the drainage hole 281, thereby reducing the possibility that the drainage hole 281 is not drained in time and causes the condensed water to accumulate in the return air duct 220.

[0072] Reference Figure 4 and Fig.12 As shown, in the embodiment of the utility model, the air duct component 200 includes an air supply structure 241 disposed on the back of the gallbladder shell 100, and the air supply structure 241 is provided with an air supply duct 240. Specifically, referring to Figure 4 , Fig. 9 and Fig.10 As shown, the air duct member 200 includes a front cover plate 250 and a rear cover plate 260, and the front cover plate 250 is fixedly connected to the rear cover plate 260, wherein, along the front-to-back direction of the gallbladder shell 100, the front cover plate 250 and the rear cover plate 260 are spaced apart and arranged at the back of the gallbladder shell 100, and the front cover plate 250 is located at the front side of the rear cover plate 260. In this embodiment, the front cover plate 250 and the rear cover plate 260 can be connected by fasteners (not shown in the figure), and can also be connected by other fixed connection methods such as riveting or welding.

[0073] Reference Figure 4 As shown, in the embodiment of the utility model, the front cover plate 250 is fixedly connected to the rear cover plate 260, so the front cover plate 250 and the rear cover plate 260 can be connected to the bladder shell 100 as a whole when assembled, reducing the difficulty of assembling the box bladder assembly 1000. Specifically, referring to Fig. 9 and Fig.10 As shown, in the embodiment of the utility model, a positioning column 254 is provided at the rear end of the front cover plate 250, and the positioning column 254 protrudes backward from the rear end surface of the front cover plate 250 along the front-to-back direction of the gallbladder shell 100. Correspondingly, a positioning groove 264 is provided at the front end of the rear cover plate 260, and the positioning groove 264 extends along the front-to-back direction of the gallbladder shell 100. The positioning column 254 can be inserted into the positioning groove 264 to play a positioning role.

[0074] Reference Fig. 9 and Fig.10 As shown, in the embodiment of the utility model, the top of the front cover plate 250 is provided with a clamping portion 253, and the clamping portion 253 protrudes from the upper end surface of the front cover plate 250. Correspondingly, the top of the rear cover plate 260 is provided with a clamping groove 263, and the clamping groove 263 penetrates the upper end surface of the rear cover plate 260 along the height direction of the gallbladder shell 100, and the clamping groove 263 is suitable for the clamping portion 253 to pass through. When assembling the front cover plate 250 and the rear cover plate 260, the front cover plate 250 and the rear cover plate 260 can be moved toward each other until the clamping portion 253 is clamped with the clamping groove 263, so that the front cover plate 250 and the rear cover plate 260 are quickly connected, so that the two can be connected to the gallbladder shell 100 as a whole, reducing the assembly difficulty of the box gallbladder assembly 1000 and improving the assembly efficiency of the box gallbladder assembly 1000.

[0075] Reference Fig.12 and Fig.13As shown, in the embodiment of the utility model, the air duct component 200 is connected to the gallbladder shell 100 through a snap-fit ​​structure 500, and the snap-fit ​​structure 500 includes a first snap 510 and a first buckle position 520 that are buckled with each other. Specifically, one of the first snap 510 and the first buckle position 520 is provided on the air duct component 200, and the other is provided on the gallbladder shell 100. In one example, the first snap 510 is provided on the air duct component 200, and the first buckle position 520 is provided on the gallbladder shell 100; in another example, the first buckle position 520 is provided on the air duct component 200, and the first snap 510 is provided on the gallbladder shell 100. It should be noted that the first snap 510 or the first buckle position 520 is not limited to being provided on the front cover plate 250, but may also be provided on the rear cover plate 260, or both the front cover plate 250 and the rear cover plate 260 may be provided with the first snap 510 or the first buckle position 520.

[0076] In the embodiment of the utility model, there are multiple first buckles 510 and multiple first buckle positions 520 respectively, and the multiple first buckles 510 are connected to the multiple first buckle positions 520 in a one-to-one correspondence. The arrangement of the multiple first buckles 510 and the multiple first buckle positions 520 can enable the air duct component 200 to be quickly connected to the gallbladder shell 100, thereby reducing the assembly difficulty of the air duct component 200 and improving the assembly efficiency of the air duct component 200.

[0077] Reference Fig. 9 and Fig.10 As shown, a part of the first buckles 510 are distributed on both sides of the front cover plate 250, and another part of the first buckles 510 are distributed on the top of the rear cover plate 260, wherein the first buckles 510 arranged on both sides of the front cover plate 250 protrude backwards along the front-to-back direction of the gallbladder shell 100, and the first buckles 510 arranged on the top of the rear cover plate 260 protrude upwards along the height direction of the gallbladder shell 100. The gallbladder shell 100 is provided with a first buckle position 520 suitable for the first buckle 510 to pass through at a position corresponding to each first buckle 510, and the first buckle position 520 can be engaged with the first buckle 510. Figure 5 As shown, in this embodiment, both sides of the rear cover plate 260 are provided with avoidance grooves 262 corresponding to the first buckle 510, and the avoidance grooves 262 are extended along the front-to-back direction of the gallbladder shell 100. When the front cover plate 250 and the rear cover plate 260 are connected, the first buckle 510 is inserted into the avoidance groove 262 and is engaged with the first buckle position 520.

[0078] In the embodiment of the utility model, the box assembly 1000 further includes a fastener (not shown in the figure). In one example, the front cover plate 250 is provided with a fixing portion 261. During assembly, the fastener can be passed through the fixing portion 261 and fixedly connected to the box shell 100, thereby achieving a fixed connection between the air duct component 200 and the box shell 100. Fig. 9As shown, in another example, the rear cover plate 260 is provided with a fixing portion 261, and a plurality of fixing portions 261 may be provided, and the plurality of fixing portions 261 are arranged at intervals, so as to balance the stress on the rear cover plate 260. Part of the fixing portion 261 is located in the air supply duct 240, and another part of the fixing portion 261 is located at the outer periphery of the rear cover plate 260. During assembly, fasteners may be passed through the fixing portion 261 and fixedly connected to the gallbladder shell 100, so as to realize the fixed connection between the air duct component 200 and the gallbladder shell 100.

[0079] In one example, the fastener is a screw, and the gallbladder shell 100 is provided with a screw hole that can be matched with the screw thread. Based on this, the fastener can be inserted into the fixing portion 261 and matched with the screw hole of the gallbladder shell 100 to achieve a fastened connection in a threaded connection manner. It should be noted that the fastener is not limited to a screw, but can also be a rivet, etc. The fastener and the gallbladder shell 100 can be selected and set according to actual conditions, and this embodiment does not limit this.

[0080] Reference Figure 1 , Figure 5 and Figure 8 As shown, in the embodiment of the utility model, the back wall of the gallbladder shell 100 is provided with a detachable back plate 130, and the back plate 130 and the bottom plate 120 are an integrally formed structure. The back plate 130 is buckled to the air supply structure 241, specifically, referring to Figure 8 As shown, the top of the back plate 130 is provided with a second buckle 133 protruding backward along the front-to-back direction of the gallbladder shell 100. Fig. 9 As shown, the rear cover plate 260 is provided with a second buckle position 265 that can be engaged with the second buckle 133. Figure 7 As shown, when the air supply structure 241 and the back plate 130 are connected, the air supply structure 241 and the back plate 130 can be moved toward each other, and the second buckle 133 can pass under the first cover plate and move to under the second buckle position 265, so that the second buckle 133 is buckled with the second buckle position 265.

[0081] Reference Figure 5 and Figure 8 As shown, in the embodiment of the utility model, the edge of the back plate 130 facing the air supply structure 241 is provided with a peripheral edge 131, and the peripheral edge 131 protrudes backward from the rear end surface of the back plate 130 along the front-to-back direction of the gallbladder shell 100. Based on this, the peripheral edge 131 and the rear end surface of the back plate 130 can define a cavity suitable for accommodating the air supply structure 241. In this embodiment, a channel 230 is formed between the peripheral edge 131 and the back plate 130 and the air supply structure 241. Specifically, referring to Figure 4 and Figure 5As shown, in the embodiment of the utility model, the front cover plate 250 is spaced apart from the gallbladder shell 100, based on which, the lower part of the front cover plate 250 and the gallbladder shell 100 are surrounded to form a channel 230, the channel 230 is arranged along the height direction of the gallbladder shell 100, and its bottom end is connected to the return air duct 220, and the channel 230 is connected to the air inlet 252. Under the suction action of the fan 400, the cold air in the return air duct 220 flows to the channel 230, and flows upward along the channel 230 to enter the fan 400 through the air inlet 252.

[0082] Reference Figure 4 As shown, the dotted arrow in the figure is a schematic diagram of the air flow direction in the box liner assembly 1000. Specifically, the air in the compartment 110 enters the return air duct 220 from the return air port 210, is converted into cold air after heat exchange in the evaporator 300, and flows toward the channel 230. The cold air flows upward along the channel 230 and enters the fan 400 through the air inlet 252. The fan 400 delivers the cold air to the air supply port 251 along the air supply duct 240, and the cold air enters the upper part of the compartment 110 through the air supply port 251, thereby realizing the refrigeration cycle of the compartment 110.

[0083] Reference Figure 4 , Fig. 9 and Fig.10 As shown, in the embodiment of the utility model, the front cover plate 250 and the rear cover plate 260 are connected to each other to form an air supply duct 240, wherein the air supply port 251 is provided on the front cover plate 250 and communicates with the air supply duct 240. The front cover plate 250 is also provided with an air inlet 252 communicated with the return air duct 220, and the air inlet 252 is provided at the lower part of the front cover plate 250 and penetrates the front cover plate 250 along the front-to-back direction of the gallbladder shell 100, so that the return air duct 220 communicates with the air supply duct 240 through the air inlet 252. In this embodiment, the air in the compartment 110 enters the return air duct 220 through the return air port 210, and after heat exchange in the evaporator 300, flows into the air supply duct 240 through the air inlet 252.

[0084] Reference Fig. 9 and Fig.10 As shown, in the embodiment of the utility model, the fan 400 is an axial flow fan, based on which, the fan 400 takes in air along its axial direction, and an opening for air outlet is provided on the periphery of the fan 400. In the present embodiment, the fan 400 and the air inlet 252 are arranged opposite to each other, and the fan 400 can suck the cold air in the return air duct 220 that has been heat-exchanged by the evaporator 300 through the air inlet 252, so the axial direction of the fan 400 is consistent with the front-back direction of the gallbladder shell 100. It can be understood that the fan 400 is located at the lower part of the air supply duct 240, and the air supply 251 is arranged at the upper part of the air supply duct 240, and the cold air sucked by the fan 400 flows upward along the air supply duct 240 and enters the compartment 110 from the air supply duct 251.

[0085] Reference Fig. 9 As shown, in an embodiment of the utility model, the fan 400 is fixedly connected to the side of the rear cover plate 260 facing the front cover plate 250. Specifically, the fan 400 and the rear cover plate 260 can be connected by fasteners, and can also be connected by other fixed connection methods such as riveting or welding. An air guide plate 270 is provided between the front cover plate 250 and the rear cover plate 260. Specifically, in this embodiment, the air guide plate 270 is provided at the front end of the rear cover plate 260, and the air guide plate 270 is connected to the front end surface of the rear cover plate 260 and protrudes forward along the front and rear direction of the gallbladder shell 100. In one example, part of the air guide plate 270 is arranged around the outer peripheral wall of the fan 400, and the air guide plate 270 can be surrounded to form an annular structure. It should be noted that the shape of the air guide plate 270 is not limited to the annular structure, and the specific shape of the air guide plate 270 can be selected and set according to actual conditions. The air guide plate 270 cooperates with the front cover plate 250 and the rear cover plate 260 to define the air supply duct 240 , thereby improving the sealing performance of the air supply duct 240 .

[0086] Since the air temperature in the channel 230 is lower than the air temperature of the back plate 130, condensation water is easily generated at the end of the back plate 130 facing the channel 230. In order to reduce the possibility of condensation water flowing along the back plate 130 and directly dripping onto the evaporator 300, refer to Figure 4 As shown, in the embodiment of the utility model, the side of the back plate 130 facing the channel 230 is provided with a second thermal insulation layer 132, and the second thermal insulation layer 132 is attached to the back plate 130 and covers the rear end face of the back plate 130. In this embodiment, the size of the second thermal insulation layer 132 is set to be slightly larger than the size of the rear end face of the back plate 130, so that the projection surface of the second thermal insulation layer 132 in the front-to-back direction of the gallbladder shell 100 completely overlaps with the rear end face of the back plate 130, thereby achieving full coverage of the rear end face of the back plate 130, not only separating the back plate 130 from the channel 230, reducing the contact area between the back plate 130 and the channel 230, and reducing the generation of condensed water, but also preventing the condensed water on the back plate 130 from dripping directly to the evaporator 300, reducing the possibility of damage to the evaporator 300.

[0087] In order to reduce the possibility that the condensed water flowing along the second insulation layer 132 flows to the first insulation layer 310, thereby flowing along the first insulation layer 310 and dripping onto the evaporator 300, refer to Figure 4 and Fig.11As shown, in the embodiment of the utility model, the lower end of the second thermal insulation layer 132 is arranged toward the air supply duct 240, so that the second thermal insulation layer 132 covers the end of the first thermal insulation layer 310. It can be understood that in this embodiment, the lower end of the second thermal insulation layer 132 extends downward to the lower side of the rear end of the first thermal insulation layer 310, so when the condensed water flows to the lower end of the second thermal insulation layer 132, the condensed water cannot flow to the first thermal insulation layer 310, but directly drips downward to the bottom wall of the bottom shell 280. In one example, the second thermal insulation layer 132 is foam. It can be understood that the foam has good thermal insulation performance. In addition, the foam material is low in price and simple to process, and can be processed easily and quickly.

[0088] Reference Figure 5 and Figure 8 As shown, in an embodiment of the utility model, a mating surface 1311 is provided at the end of the surrounding edge 131 away from the back panel 130, and the mating surface 1311 is parallel to the front end surface of the front cover plate 250. Based on this, the mating surface 1311 fits with the surface of the front cover plate 250, thereby improving the sealing between the back panel 130 and the air supply structure 241 and reducing the possibility of air leakage in the channel 230.

[0089] It is understandable that the inventors learned during the experiment that if the width of the mating surface 1311 is too small, the connection sealing between the mating surface 1311 and the surface of the front cover plate 250 is poor, and the cold air in the channel 230 is easy to leak from the gap between the mating surface 1311 and the front end surface of the front cover plate 250, thereby reducing the cooling effect. Figure 8 As shown, in the embodiment of the present utility model, the width of the mating surface 1311 is w, which satisfies: 15 mm (millimeter) ≤ w ≤ 20 mm (millimeter).

[0090] In order to reduce the possibility that the condensed water generated at the mating surface 1311 flows to the bottom plate 120 and directly drips onto the evaporator 300, refer to Figure 5 and Figure 8 As shown, in the embodiment of the utility model, a third insulation layer 134 is provided between the mating surface 1311 and the front cover plate 250, and the third insulation layer 134 is attached to the front cover plate 250 and covers the mating surface 1311. The third insulation layer 134 can improve the sealing between the mating surface 1311 and the air supply structure 241, reduce the generation of condensed water, and can also prevent the condensed water on the mating surface 1311 from flowing to the bottom plate 120 and directly dripping to the evaporator 300. In one example, the third insulation layer 134 is foam. It can be understood that foam has good thermal insulation performance. In addition, the foam material is low in price and simple to process, and can be processed easily and quickly.

[0091] It should be noted that the first thermal insulation layer 310, the second thermal insulation layer 132 and the third thermal insulation layer 134 are respectively arranged at one end of the liner shell 100 facing the air duct component 200. The first thermal insulation layer 310, the second thermal insulation layer 132 and the third thermal insulation layer 134 all have good thermal insulation properties and can effectively slow down the conduction of heat, thereby reducing the heat conduction between the compartment 110 and the outside world, so that the compartment 110 can maintain a low temperature, thereby improving the refrigeration effect of the box liner assembly 1000.

[0092] Reference Figure 4 As shown, in the embodiment of the utility model, in order to facilitate the user to take and put the items stored in the compartment 110, the box assembly 1000 also includes: a drawer 600 for loading items. The drawer 600 is arranged in the compartment 110, and the drawer 600 is slidably connected to the shell 100. When the user takes and puts the items, he can directly pull or push the drawer 600.

[0093] Reference Figure 4 and Fig.10 As shown, the air supply port 251 is formed on the front cover plate 250 and protrudes from the front end surface of the front cover plate 250 along the front-to-back direction of the gallbladder shell 100, so the air supply port 251 protrudes toward the compartment 110. Based on this, when the drawer 600 is assembled in the compartment 110, the air supply port 251 protrudes from the edge of the rear end of the drawer 600. Specifically, the air supply port 251 is located on the upper side of the top end of the drawer 600 and on the front side of the edge of the rear end of the drawer 600, so that the air supply port 251 can directly deliver cold air to the drawer 600, thereby improving the utilization rate of cold air and thus improving the cooling effect in the drawer 600.

[0094] Reference Figure 4 and Fig.10 As shown, in the embodiment of the utility model, a plurality of air supply ports 251 are provided, and the plurality of air supply ports 251 are evenly distributed on the front cover plate 250. At least two drawers 600 are provided, and at least two drawers 600 are arranged at intervals along the height direction of the compartment 110, so as to form storage spaces with different functions, such as: a variable temperature area and a freezing area, etc. In one example, four air supply ports 251 are provided, and the four air supply ports 251 are arranged side by side on the front face of the front cover plate 250. There are two drawers 600, of which two air supply ports 251 are located above the upper drawer 600, and the other two air supply ports 251 are located above the lower drawer 600, so that each drawer 600 has sufficient cold air entering, ensuring the cooling effect of each drawer 600.

[0095] The embodiment of the utility model further provides a refrigeration device (not shown in the figure), comprising: the box liner assembly 1000 of the above embodiment, the box liner assembly 1000 can be arranged at the lower part of the refrigeration device. In the embodiment of the utility model, the refrigeration device can be a refrigerator, a freezer, a wine cabinet, a fresh food cabinet, etc.

[0096] The refrigeration device adopts the box liner assembly 1000 of the above embodiment. The air duct component 200 of the box liner assembly 1000 in the refrigeration device is provided with a return air duct 220, and the return air duct 220 is connected to the compartment 110 through the air supply port 251 and the return air port 210, wherein the evaporator 300 is arranged in the return air duct 220 and is located at the bottom of the liner shell 100, thereby realizing the design layout of the evaporator 300 being horizontally placed at the bottom of the liner shell 100; a plurality of return air ports 210 are distributed on the bottom wall of the liner shell 100 to form a return air area 211, and the return air area 211 and the evaporator 300 are arranged in sequence along the front and rear direction of the liner shell 100, and the return air area The two ends of 211 are arranged along the width direction of the gallbladder shell 100, thereby reducing the possibility of the evaporator 300 blocking the return air area 211, so that the arrangement of the return air area 211 can adapt to the design layout of the evaporator 300 being horizontally placed at the bottom of the gallbladder shell 100; and then at least one end of the return air area 211 is extended toward the evaporator 300, thereby expanding the return air area 211, increasing the return air surface area, allowing more air in the compartment 110 to pass through the return air area 211, increasing the return air volume, helping to improve the efficiency of the refrigeration cycle of the refrigeration equipment, reducing the energy consumption of the refrigeration equipment, and ensuring the refrigeration effect of the refrigeration equipment.

[0097] Since the refrigeration device adopts all the technical solutions of the box liner assembly 1000 of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0098] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A box liner assembly, characterized in that: include: The gallbladder shell has a compartment, the gallbladder shell is provided with a return air port, and the return air port is connected to the compartment; An air duct component is connected to the gallbladder shell, the air duct component is provided with an air supply port and an air return port, the air supply port is connected to the compartment, and the air return port is connected to the air supply port and the air return port; An evaporator is arranged in the return air duct and located at the bottom of the shell; There are multiple return air vents, which are distributed on the bottom wall of the gallbladder shell to form a return air area. The return air area and the evaporator are arranged in sequence along the front-to-back direction of the gallbladder shell. Both ends of the return air area are arranged along the width direction of the gallbladder shell, and at least one end is extended along the front-to-back direction of the gallbladder shell.

2. The box liner assembly according to claim 1, characterized in that: The portion of the return air area extending toward the evaporator is an expansion area, and a first thermal insulation layer is provided between the evaporator and the gallbladder shell. The first thermal insulation layer is attached to the bottom surface of the gallbladder shell and covers the upper surface of the evaporator. At least one end of the first thermal insulation layer along the width direction of the gallbladder shell is provided with a notch connected to the expansion area.

3. The box liner assembly according to claim 2, characterized in that: The bottom wall of the bladder shell is provided with a detachable bottom plate, the return air area is formed at the front of the bottom plate, the expansion area is arranged along the side edge of the bottom plate, and the first thermal insulation layer is attached to the bottom surface of the bottom plate.

4. The box liner assembly according to claim 1, characterized in that: The air duct component comprises a bottom shell, the bottom shell is connected to the bottom of the gallbladder shell, the return air duct is formed between the bottom shell and the gallbladder shell, the evaporator is fixedly connected in the bottom shell, and the bottom shell is provided with a drainage hole.

5. The box liner assembly according to claim 4, characterized in that: The cross-sectional area of ​​the return air port is smaller than the cross-sectional area of ​​the drainage hole.

6. The box liner assembly according to claim 3, characterized in that: The air duct component includes an air supply structure arranged on the back of the gallbladder shell, the air supply structure is provided with an air supply duct, the air supply port is arranged on the air supply structure, a fan is arranged in the air supply duct, and the air supply duct connects the air supply port and the return air duct.

7. The box liner assembly according to claim 6, characterized in that: The air supply structure is fixedly connected to the gallbladder shell, the back wall of the gallbladder shell is provided with a detachable back plate, the back plate and the bottom plate are an integrally formed structure, and the back plate is buckled to the air supply structure.

8. The box liner assembly according to claim 7, characterized in that: The edge of the back plate facing the air supply structure is provided with a surrounding edge, and a channel is formed between the surrounding edge, the back plate and the air supply structure. The air supply port is located at the upper part of the air supply structure, and an air inlet is provided at the lower part of the air supply structure. The channel connects the air inlet and the return air duct.

9. The box liner assembly according to claim 8, characterized in that: A second thermal insulation layer is provided on the side of the back plate facing the channel, and the lower end of the second thermal insulation layer is arranged toward the air supply duct so that the second thermal insulation layer covers the end of the first thermal insulation layer.

10. A refrigeration device, characterized in that: The invention comprises a box liner assembly as described in any one of claims 1 to 9.

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