Refrigerator

Abstract

The refrigerator comprises an inner container and an air duct assembly, and a first clamping part is arranged on the side wall of the inner container; the air duct assembly is installed on the inner side of the inner container, the air duct assembly is provided with an air return cavity and an air return opening communicated with the air return cavity, the air duct assembly is provided with a second clamping part, and the second clamping part is matched with the first clamping part for limiting and is located outside the air return cavity.

Description

Technical Field

[0001] This application belongs to the field of freezer technology, and in particular relates to a freezer. Background Technology

[0002] In related technologies, the duct panel mounting bracket is located directly behind the return air inlet. This layout increases return air resistance, thereby reducing cooling efficiency. Furthermore, the duct panel is difficult to position and time-consuming to install due to obstructed visibility. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a freezer that reduces return air resistance, improves refrigeration efficiency, is easy to install, and saves manufacturing costs.

[0004] This application provides a freezer, comprising:

[0005] The inner liner has a first retaining part on its side wall;

[0006] The air duct assembly is installed inside the inner liner. The air duct assembly has a return air chamber and a return air inlet communicating with the return air chamber. The air duct assembly is provided with a second retaining part, which cooperates with the first retaining part to limit the movement and is located outside the return air chamber.

[0007] According to the freezer of this application, by setting a first retaining part on the side wall of the inner liner and cooperating with a second retaining part of the air duct assembly to limit the movement, the limiting structure is set at the side wall position with unobstructed view, which facilitates installation and saves manufacturing costs. In addition, the second retaining part is located outside the return air cavity, that is, it does not obstruct the return air path in the air duct assembly, which reduces return air resistance and improves cooling efficiency.

[0008] According to one embodiment of this application, a first retaining part is disposed at the bottom of the side wall of the inner liner in the thickness direction of the freezer, and a second retaining part is disposed at the bottom of the side wall of the air duct assembly in the thickness direction of the freezer.

[0009] According to one embodiment of this application, the inner liner is provided with an opening groove, and an embedded part is provided in the opening groove. The side of the embedded part facing the inside of the freezer is provided with a first retaining part.

[0010] According to one embodiment of this application, the embedded part is provided with mating grooves on both sides, and the mating grooves are matched and limited by the side walls of the opening groove.

[0011] According to one embodiment of this application, the first holding part is a card slot, the second holding part is a buckle, the buckle is located on the side of the air duct assembly facing the outside of the freezer, and the embedded part is provided with two oppositely arranged bent parts on the side facing the air duct assembly, the two bent parts defining the card slot.

[0012] According to one embodiment of this application, the extension direction of the slot is the height direction of the freezer, and the buckle extends along the height direction of the freezer.

[0013] According to one embodiment of this application, the second holding part is formed by sheet metal stamping.

[0014] According to one embodiment of this application, the return air vent includes a first return air vent and a second return air vent. The air duct assembly includes a first section and a second section arranged along the height direction. The second section is located below the first section and protrudes from the first section along the width direction of the freezer. The return air cavity is disposed in the second section. The first return air vent is provided on the first surface of the second section away from the first section, and the second return air vent is provided on the second surface of the second section in the thickness direction of the freezer.

[0015] According to one embodiment of this application, both the first surface and the second surface are inclined from top to bottom in the direction toward the interior of the return air cavity.

[0016] According to one embodiment of this application, a bending plate is provided at the end of the second surface away from the first surface. The bending plate extends along the thickness direction of the freezer and blocks the gap between the second surface and the inner liner.

[0017] According to one embodiment of this application, the second holding portion is disposed on the side of the second surface away from the first surface.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a partial structural diagram of the freezer provided in an embodiment of this application;

[0021] Figure 2 This is another partial structural schematic diagram of the freezer provided in the embodiments of this application;

[0022] Figure 3 yes Figure 2 A cross-sectional schematic diagram of AA in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of the embedded part provided in the embodiment of this application;

[0024] Figure 5 This is another structural schematic diagram of the embedded part provided in the embodiment of this application;

[0025] Figure 6 This is another partial structural schematic diagram of the freezer provided in the embodiments of this application;

[0026] Figure 7 yes Figure 6 Enlarged view at point B in the middle;

[0027] Figure 8 This is another partial structural schematic diagram of the freezer provided in the embodiments of this application;

[0028] Figure 9 yes Figure 8 Enlarged view at point C;

[0029] Figure 10 This is another partial structural schematic diagram of the freezer provided in the embodiments of this application.

[0030] Figure label:

[0031] 1000, Freezer; 100, Inner liner; 101, First retaining part; 110, Opening groove; 120, Embedded part; 121, Mating groove; 122, Bending part; 123, Slot; 200, Air duct assembly; 201, Second retaining part; 210, Buckle; 220, First section; 230, Second section; 231, Return air cavity; 232, First surface; 233, Second surface; 234, First return air vent; 235, Second return air vent; 236, Bending plate. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] The following is for reference. Figures 1-10 A refrigerator according to an embodiment of this application is described.

[0034] First, it should be noted that the accompanying drawings in this application only show partial structural details of the inner liner of the freezer and the assembly diagram of the air duct components. Furthermore, the thickness and width directions in the drawings are merely schematic representations.

[0035] Please see Figure 1 , Figure 2 and Figure 3 The freezer 1000 provided in this embodiment includes an inner liner 100 and an air duct assembly 200. The side wall of the inner liner 100 is provided with a first retaining part 101; the air duct assembly 200 is installed inside the inner liner 100, the air duct assembly 200 has a return air cavity 231 and a return air inlet communicating with the return air cavity 231, the air duct assembly 200 is provided with a second retaining part 201, the second retaining part 201 cooperates with the first retaining part 101 to limit the movement and is located outside the return air cavity 231.

[0036] The freezer 1000 also includes an outer casing, and an inner liner 100 is set inside the outer casing. As one of the main structural components of the freezer 1000, the inner liner 100 mainly serves to support the objects inside the freezer 1000. The inner liner 100 can be made of high-density polyurethane foam material to ensure good heat preservation performance.

[0037] A first retaining portion 101 is provided on the side wall of the inner liner 100. Exemplarily, the first retaining portion 101 may be one or more protrusions / grooves on the side wall of the inner liner 100, distributed along the height direction of the inner liner 100, for engaging with the second retaining portion 201 on the air duct assembly 200. Furthermore, compared to related technologies where the connection structure between the air duct assembly and the inner liner is located at the bottom or rear of the air duct assembly, in this solution, the first retaining portion 101 is located on the side wall of the inner liner 100, with unobstructed visibility, thus facilitating the installation process of the air duct assembly 200, improving assembly efficiency and accuracy, and saving manufacturing costs.

[0038] The freezer 1000 is an air-cooled freezer 1000. The air duct assembly 200 is installed inside the inner liner 100. Its main function is to guide the circulation of cold air. The air duct assembly 200 can be equipped with an evaporator and a fan. The outer shell of the air duct assembly 200 can be equipped with an air outlet and an air return outlet. The operation of the fan drives the gas to circulate in the air duct assembly 200 and the internal space of the freezer 1000. The air inside the freezer 1000 enters the air duct assembly 200 through the air return outlet, is cooled by heat exchange in the evaporator, and is then blown into the freezer 1000 through the air outlet to achieve cooling.

[0039] The air duct assembly 200 includes a return air chamber 231 and a return air inlet communicating with it. In order to optimize the airflow path and reduce return air resistance, the return air inlet is positioned at a distance from the side wall of the inner liner 100.

[0040] The air duct assembly 200 is provided with a second retaining part 201, which can be one or more grooves / protrusions on the edge of the air duct assembly 200. When the air duct assembly 200 is installed inside the inner liner 100, the second retaining part 201 cooperates with the first retaining part 101 on the side wall of the inner liner 100 to form a stable fixed connection. This cooperation method not only simplifies the installation process but also ensures the accurate positioning of the air duct assembly 200. More importantly, the second retaining part 201 is located outside the return air cavity 231 and will not obstruct the return air path inside the air duct assembly 200, thereby reducing return air resistance and improving cooling efficiency.

[0041] During the actual assembly process, align the air duct assembly 200 with the first retaining part 101 inside the inner liner 100. Since the first retaining part 101 is located on the side wall of the inner liner 100, the operator can clearly see its position, facilitating positioning. Slide the air duct assembly 200 along the side wall of the inner liner 100 until the second retaining part 201 is fully inserted and engages with the first retaining part 101. Confirm that the air duct assembly 200 is securely installed inside the inner liner 100 without any loosening or misalignment. Because the line of sight is unobstructed during installation, the operator can easily check whether the installation is correct.

[0042] According to the refrigerator 1000 provided in the embodiments of this application, by providing a first retaining part 101 on the side wall of the inner liner 100 and cooperating with a second retaining part 201 of the air duct assembly 200 to limit the movement, the limiting structure is located on the side wall and the line of sight is not obstructed, which facilitates installation and saves manufacturing costs. In addition, the second retaining part 201 is located outside the return air cavity 231, that is, it does not obstruct the return air path inside the air duct assembly 200, which reduces the return air resistance and improves the cooling efficiency.

[0043] Please see Figure 2 and Figure 3 According to some embodiments of this application, the first holding part 101 may be provided at the bottom of the side wall of the inner liner 100 in the thickness direction of the freezer 1000, and the second holding part 201 may be provided at the bottom of the side wall of the air duct assembly 200 in the thickness direction of the freezer 1000.

[0044] Understandably, the air duct assembly 200 is located on one side of the inner liner 100 in the width direction of the freezer 1000 to reduce the space occupied inside the freezer 1000. The first retaining part 101 is located on the side wall of the inner liner 100 in the thickness direction of the freezer 1000, and the second retaining part 201 is located on the side wall of the air duct assembly 200 in the thickness direction of the freezer 1000. The operator can clearly see the position of these two retaining parts during the installation process, making it easier to align and install.

[0045] By positioning the first retaining part 101 and the second retaining part 201 at the bottom of the freezer 1000 in the height direction, the engagement of the first retaining part 101 with the second retaining part 201 indicates that the air duct assembly 200 has been installed correctly, improving installation accuracy and reducing the chance of improper assembly. Furthermore, the bottom-mounted retaining parts provide a more stable connection, ensuring that the air duct assembly 200 will not loosen or misalign during use, thus enhancing the overall structural reliability and durability.

[0046] In some embodiments, the inner liner 100 has a first retaining portion 101 on both side walls in the thickness direction of the freezer 1000, and the air duct assembly 200 has a second retaining portion 201 on both side walls in the thickness direction of the freezer 1000. By providing retaining portions on both sides in the thickness direction of the freezer 1000, the stability of the overall assembly is improved.

[0047] In other embodiments, the inner liner 100 may have a first retaining part 101 at the center of the height direction of the freezer 1000, and the air duct assembly 200 may have a second retaining part 201 at the center of the height direction of the freezer 1000, with no specific height limitation. Furthermore, multiple first retaining parts 101 and multiple second retaining parts 201 may be distributed along the height direction to improve the stability of the overall assembly.

[0048] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 According to some embodiments of this application, the inner liner 100 may be provided with an opening groove 110, and an embedded part 120 may be provided in the opening groove 110. The side of the embedded part 120 facing the inside of the freezer 1000 may be provided with a first holding part 101.

[0049] The number of opening slots 110 is not limited. One or more opening slots 110 can be provided on the inner liner 100. These opening slots 110 are used to accommodate embedded parts 120. The embedded parts 120 are installed in the opening slots 110. The embedded parts 120 can be components made of metal or other high-strength materials to ensure that they have sufficient strength and durability. The side of the embedded part 120 facing the inside of the freezer 1000 is provided with a first retaining part 101. The first retaining part 101 can be one or more protrusion / groove structures for cooperating with the second retaining part 201 on the air duct assembly 200.

[0050] A key advantage of the embedded part 120 is its ease of modification to existing systems. The inner liner 100 does not require re-molding; simply cut an opening slot 110 in the side wall of the inner liner 100, then insert the embedded part 120 to form a retaining component. This design significantly reduces development costs, especially during product upgrades or improvements, eliminating the need for large-scale replacement of existing molds, thus saving considerable time and money. The design and manufacture of the embedded part 120 can be mass-produced in the factory, ensuring consistency and accuracy in the retaining component's position, resulting in low production costs and improved alignment accuracy during installation.

[0051] In one example, the side wall and bottom wall of the inner liner 100 can be independent components, so that the lower end of the side wall of the inner liner 100 is open. The opening groove 110 can be set at the bottom of the side wall of the inner liner 100, so that the lower end of the opening groove 110 is open, which facilitates the installation of the embedded part 120.

[0052] By providing an opening groove 110 at the bottom of the inner liner 100 and embedding a pre-embedded part 120, the structural strength of the bottom of the inner liner 100 is enhanced. The pre-embedded part 120 is typically made of high-strength material, providing better support and fixation. Furthermore, the use of the pre-embedded part 120 extends the service life of the inner liner 100. Because the pre-embedded part 120 provides additional support, it reduces wear and deformation of the bottom of the inner liner 100 caused by long-term use, thereby improving the overall durability of the freezer 1000.

[0053] According to the embedded part 120 provided in the embodiments of this application, by setting an opening groove 110 in the inner liner 100 and embedding the embedded part 120, and setting a first holding part 101 on the embedded part 120, the present invention not only enhances the structural strength of the bottom of the inner liner 100, but also improves the installation accuracy and ease of installation, increases the service life of the freezer 1000, and significantly reduces the development cost.

[0054] Please see Figure 4 , Figure 5 , Figure 6 and Figure 7 According to some embodiments of this application, the embedded part 120 may be provided with mating grooves 121 on both sides, and the mating grooves 121 may be mated and limited with the side wall of the opening groove 110.

[0055] The embedded part 120 has mating grooves 121 on both sides. These mating grooves 121 can be recessed or recessed structures, used to tightly fit with the side wall of the opening groove 110 at the bottom of the inner liner 100. Because the lower end of the opening groove 110 is open, the side wall of the opening groove 110 is inserted into the mating groove 121 on the embedded part 120. During assembly, the mating groove 121 of the embedded part 120 is aligned with the side wall of the opening groove 110, so that the embedded part 120 is inserted into the opening groove 110 from bottom to top. Through this embedded mating method, the embedded part 120 is accurately positioned and fixed in the opening groove 110.

[0056] By utilizing the open-ended feature of the slot 110, the design of the groove 121 greatly simplifies the installation process of the embedded part 120. Assembly is simple, and maintenance and replacement are equally easy, reducing production and maintenance costs. Furthermore, the groove 121 makes the embedded part 120 more stable within the slot 110, preventing it from loosening or shifting, thus improving the stability of the entire structure. Especially during long-term use, it can maintain a good fixed state.

[0057] Please see Figures 4 to 9 ,in, Figure 6 This is a top view of an embodiment of this application. According to some embodiments of this application, the first holding part 101 can be a card slot 123, and the second holding part 201 can be a buckle 210. The buckle 210 can be located on the side of the air duct assembly 200 facing the outside of the freezer 1000. The embedded part 120 can be provided with two oppositely arranged bent parts 122 on the side facing the air duct assembly 200. The two bent parts 122 can define the card slot 123.

[0058] The first retaining part 101 is designed as a slot 123 structure. The embedded part 120 has two opposing bent parts 122 on the side facing the air duct assembly 200. These two bent parts 122 are spaced apart to form a slot 123 between them. By extending the two bent parts 122 to the inside of the inner liner 100, the position of the slot 123 can be easily observed by the assembly personnel during assembly. Furthermore, the design of the two bent parts 122 provides a certain amount of flexibility during assembly. When the size of the buckle 210 is slightly larger, the bent parts 122 can deform appropriately to facilitate the insertion of the buckle 210, thereby improving the overall tightness of the assembly. A tight fit reduces noise generated by loosening or vibration of the air duct assembly 200 during use. This design makes the air duct assembly 200 more stable, reduces unnecessary friction and vibration, and thus lowers the noise level during operation. Meanwhile, the design of the two bends 122 increases the rigidity and impact resistance of the embedded part 120. When subjected to external impact or vibration, this structure can better absorb and disperse energy, protecting the duct assembly 200 and the embedded part 120 itself from damage.

[0059] The second holding part 201 is designed as a buckle 210 structure. The buckle 210 is located on the side of the air duct assembly 200 facing the outside of the freezer 1000. It is also convenient to observe the cooperation between the buckle 210 and the slot 123 during assembly. The buckle 210 can be inserted into the slot 123 on the embedded part 120. Through this embedded cooperation method, the fixed connection between the air duct assembly 200 and the embedded part 120 is realized. The assembly is simple and the structure is highly stable.

[0060] The buckle 210 and slot 123 provided in the embodiments of this application not only enhance the connection strength between the air duct assembly 200 and the embedded part 120, but also improve the installation accuracy and ease of use, increase durability, and reduce maintenance costs, while facilitating disassembly and maintenance.

[0061] In some embodiments, a protective pad may be provided inside the card slot 123, which on the one hand improves the stability of the engagement between the card slot 123 and the buckle 210, and on the other hand reduces friction and noise caused by vibration, thereby improving durability and user experience.

[0062] Please see Figures 6 to 9 According to some embodiments of this application, the extension direction of the slot 123 can be the height direction of the freezer 1000, and the buckle 210 can extend along the height direction of the freezer 1000.

[0063] The height of the slot 123 is not limited and can be set according to actual needs. By extending the buckle 210 along the height of the freezer, the buckle 210 can be smoothly inserted into the slot 123, and provides a uniform fixing force in the height direction. This also helps to prevent the air duct assembly 200 from sagging or loosening due to gravity during use, and ensures an effective limiting force in the horizontal direction, thereby improving the stability of the entire structure.

[0064] The design, extending along the vertical direction, allows operators to easily install the duct assembly 200 by simply inserting the clip 210 into the slot 123 from above. This simple, linear insertion method simplifies the installation process and reduces operational difficulty. When maintenance or replacement of the duct assembly 200 is required, operators can easily remove the clip 210 from the slot 123, complete the maintenance, and then reinstall it without affecting its original fixing effect.

[0065] Please see Figure 9 According to some embodiments of this application, the second holding part 201 can be formed by sheet metal stamping.

[0066] The second retaining part 201, namely the latch 210, is manufactured using sheet metal stamping. Because the latch 210 is located at the bottom of the air duct assembly 200, near its bottom edge, the stamping process is convenient and does not compromise the overall structural stability. The air duct assembly 200 is generally made of metal. This process, using a mold to stamp metal sheets to form the required shape and structure, is an efficient, precise, and low-cost manufacturing method suitable for mass production. Furthermore, stamping ensures the consistency and precision of each latch 210, helping to ensure accurate fit of all air duct assemblies 200 during installation and improving overall product quality. Using stamped latches 210 also ensures high integration between the latches 210 and the air duct assembly 200, reducing the number of parts, minimizing structural modifications to the original air duct assembly 200, and lowering overall production costs.

[0067] Please see Figures 8 to 10 ,in, Figure 10This is a bottom view of an embodiment of this application. According to some embodiments of this application, the return air vent may include a first return air vent 234 and a second return air vent 235. The air duct assembly 200 may include a first section 220 and a second section 230 arranged along the height direction. The second section 230 is located below the first section 220 and may protrude from the first section 220 along the width direction of the freezer 1000. The return air cavity 231 may be disposed within the second section 230. The first surface 232 of the second section 230 away from the first section 220 may be provided with the first return air vent 234. The second surface 233 of the second section 230 in the thickness direction of the freezer 1000 may be provided with the second return air vent 235.

[0068] By setting the first segment 220 and the second segment 230 distributed along the height direction, the internal functional areas of the air duct assembly 200 are rationally allocated, the overall structural strength of the air duct assembly 200 is increased, and the return air cavity 231 is better supported, preventing deformation or damage due to external forces during use. The return air cavity 231 is located within the second segment 230. By making the second segment 230 protrude beyond the first segment 220 in the width direction, the volume of the return air cavity 231 is increased to improve return air efficiency, and the return air path is extended, facilitating maintenance and cleaning of the return air cavity 231 and reducing contamination of the evaporator and fan inside the air duct assembly 200. By setting the second segment 230 below the first segment 220, that is, close to the bottom of the freezer 1000, the second segment 230 occupies less internal space in the freezer 1000, and the top of the second segment 230 can also be used to place items.

[0069] The first return air vent 234 and the second return air vent 235 are respectively located on the first surface 232 and the second surface 233. Both the first surface 232 and the second surface 233 are side surfaces of the second segment 230. By placing the first return air vent 234 and the second return air vent 235 on the side surfaces, the obstruction of the return air vents by objects placed inside the freezer 1000 is reduced. The placement of the first return air vent 234 and the second return air vent 235 improves return air efficiency, thereby improving air circulation efficiency. Air can enter the return air cavity 231 from different directions, increasing the uniformity and stability of airflow and improving the cooling effect. This design also reduces dead air zones, ensuring that all areas inside the freezer 1000 are effectively cooled.

[0070] It is understandable that the second segment 230 has two second surfaces 233 in the thickness direction of the freezer 1000, and a second return air vent 235 can be provided on both second surfaces 233.

[0071] Please see Figures 8 to 10 According to some embodiments of this application, both the first surface 232 and the second surface 233 can be tilted from top to bottom in the direction toward the interior of the return air cavity 231.

[0072] When a large number of items are piled up inside the freezer 1000, if the surface where the return air vent is located is vertical or horizontal, the items may stick to these surfaces, thus completely or partially blocking the return air vent.

[0073] In this application's technical solution, both the first surface 232 (with a first return air inlet 234) and the second surface 233 (with a second return air inlet 235) are designed to slope downwards towards the interior of the return air cavity 231. This sloped design maintains the gap between the return air inlet and the stacked items when the freezer 1000 is full, ensuring unobstructed airflow and effectively preventing the return air inlet from being completely blocked by items. This guarantees the normal operation and efficient cooling performance of the freezer 1000. Furthermore, it optimizes the airflow distribution, allowing air to enter the return air cavity 231 from multiple directions, reducing dead zones and improving the uniformity and stability of the airflow.

[0074] Please see Figure 9 and Figure 10 According to some embodiments of this application, a bending plate 236 is provided at the end of the second surface 233 away from the first surface 232. The bending plate 236 extends along the thickness direction of the freezer 1000 and blocks the gap between the second surface 233 and the inner liner 100.

[0075] The second surface 233 is located on the part of the second section 230 that protrudes from the first section 220. Because the second surface 233 is inclined, a large gap is formed between the end of the second surface 233 away from the first surface 232 and the inner liner 100, which poses a risk of foreign objects entering when the fan is working.

[0076] By setting the bending plate 236, the gap between the second surface 233 and the inner liner 100 can be blocked. Specifically, the bending plate 236 can be integrated with the second section 230. One end of the bending plate 236 in the thickness direction of the freezer 1000 can be connected to the second surface 233, and the other end can abut against the side wall of the inner liner 100. The lower end of the bending plate 236 can be flush with the lower end of the second surface 233, making the bending plate 236 triangularly arranged. This reduces the risk of cold air inside the freezer 1000 entering the air duct assembly 200 through locations other than the first return air vent 234 and the second return air vent 235, ensuring the return air filtration effect. Please refer to [link / reference]. Figures 8 to 10 According to some embodiments of this application, the second holding part 201 is provided on the side of the second surface 233 away from the first surface 232.

[0077] It should be noted that the second surface 233 is located on the part of the second segment 230 that protrudes from the first segment 220. The second holding part 201 is located on the side of the second surface 233 away from the first surface 232. That is, the second holding part 201 is positioned directly opposite the first segment 220 in the height direction, so that the second holding part 201 does not affect the arrangement of the second return air vent 235 and does not obstruct the return air vent, thus ensuring return air efficiency. Furthermore, the second holding part 201 is located on the main structure of the air duct assembly 200, resulting in higher assembly stability.

[0078] The second holding part 201 is located close to the second surface 233 in the width direction of the freezer 1000. This layout not only avoids functional conflicts with the area of ​​the second surface 233, but also provides more installation space for other components, making the internal layout of the freezer 1000 more compact and orderly, and improving the overall space utilization.

[0079] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0080] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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.

[0081] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0082] In the description of this application, "multiple" means two or more.

[0083] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0084] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A freezer, characterized in that, include: The inner liner has a first retaining part on its side wall; The air duct assembly is installed inside the inner liner. The air duct assembly has a return air cavity and a return air inlet communicating with the return air cavity. The air duct assembly is provided with a second retaining part, which cooperates with the first retaining part to limit the movement and is located outside the return air cavity.

2. The freezer according to claim 1, characterized in that, The first retaining part is located at the bottom of the side wall of the inner liner in the thickness direction of the freezer, and the second retaining part is located at the bottom of the side wall of the air duct assembly in the thickness direction of the freezer.

3. The freezer according to claim 1, characterized in that, The inner liner is provided with an opening groove, and a pre-embedded part is provided in the opening groove. The first retaining part is provided on the side of the pre-embedded part facing the inside of the freezer.

4. The freezer according to claim 3, characterized in that, The embedded part is provided with mating grooves on both sides, and the mating grooves are matched and limited by the side wall of the opening groove.

5. The freezer according to claim 3, characterized in that, The first retaining part is a slot, and the second retaining part is a buckle. The buckle is located on the side of the air duct assembly facing the outside of the freezer. The embedded part has two oppositely arranged bent parts on the side facing the air duct assembly, and the two bent parts define the slot.

6. The freezer according to claim 5, characterized in that, The slot extends along the height of the freezer, and the buckle extends along the height of the freezer.

7. The freezer according to claim 5, characterized in that, The second holding part is formed by sheet metal stamping.

8. The freezer according to any one of claims 1-7, characterized in that, The return air vent includes a first return air vent and a second return air vent. The air duct assembly includes a first section and a second section arranged along the height direction. The second section is located below the first section and protrudes from the first section along the width direction of the freezer. The return air cavity is disposed in the second section. The first return air vent is provided on the first surface of the second section away from the first section. The second return air vent is provided on the second surface of the second section in the thickness direction of the freezer.

9. The freezer according to claim 8, characterized in that, Both the first surface and the second surface are inclined from top to bottom in the direction toward the interior of the return air cavity.

10. The freezer according to claim 9, characterized in that, A bending plate is provided at the end of the second surface away from the first surface. The bending plate extends along the thickness direction of the freezer and blocks the gap between the second surface and the inner liner.

11. The freezer according to claim 8, characterized in that, The second holding part is located on the side of the second surface away from the first surface.

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