Refrigerator and cabinet assembly thereof

Abstract

This invention provides a refrigerator and its cabinet assembly. The cabinet assembly includes an inner liner and an air duct forming member. The inner liner has an inner wall, which includes a rear wall panel, a side panel located in front of the rear wall panel and surrounding its periphery, and a mounting plate formed between a portion of the periphery of the rear wall panel and the side panel. The rear wall panel has multiple snap-fit ​​grooves formed near the edge of the mounting plate. The air duct forming member is disposed inside the inner liner, in front of the rear wall panel, to define an air outlet duct and a storage compartment located in front of the air outlet duct within the inner liner. The air duct forming member also includes an outer air duct plate, the periphery of which has multiple snap-fit ​​portions. Each snap-fit ​​portion has a hook, and the hooks extend into the snap-fit ​​grooves to fix the air duct forming member to the inner liner. The cabinet assembly of this invention securely installs the air duct forming member inside the inner liner through snap-fit, improving the inner liner's sealing performance, making it highly practical and easy to promote.

Description

Technical Field

[0001] This invention relates to the field of refrigeration and freezing, and in particular to a refrigerator and its cabinet components. Background Technology

[0002] For frost-free refrigerators, the inner liner is generally defined by an air duct plate to define the air duct and the storage compartment located in front of the air duct. The air duct plate is usually connected to the inner liner with screws. However, since the inner liner wall is very thin, connecting it with screws is not only a complicated installation process, but may also lead to an unstable connection of the air duct plate, affecting the air duct's sealing performance. Summary of the Invention

[0003] One object of the present invention is to overcome at least one deficiency in the prior art and to provide a refrigerator and its cabinet assembly.

[0004] A further object of the present invention is to securely connect the air duct forming element to the rear wall panel of the inner liner.

[0005] Another further objective of this invention is to avoid surface shrinkage and deformation and internal stress concentration in the snap-fit ​​part during injection molding, thereby improving the yield rate of injection molding of the external air duct plate and the snap-fit ​​part.

[0006] Specifically, the present invention provides a cabinet assembly for a refrigerator, comprising: an inner liner having an inner liner wall, the inner liner wall including a rear wall panel, a side panel located in front of the rear wall panel and surrounding the periphery of the rear wall panel, and an assembly plate formed between a portion of the periphery of the rear wall panel and the side panel, the rear wall panel having a plurality of snap-fit ​​grooves formed at an edge near the assembly plate; and an air duct forming member disposed inside the inner liner, located in front of the rear wall panel, to define an air outlet duct and a storage compartment located in front of the air outlet duct within the inner liner, and the air duct forming member further including an outer air duct plate, the periphery of the outer air duct plate having a plurality of snap-fit ​​portions, each snap-fit ​​portion having a hook, the hooks extending one-to-one into the snap-fit ​​grooves to fix the air duct forming member to the inner liner.

[0007] Optionally, each snap-fit ​​portion further includes: a fixing section extending rearward from one edge of the outer air duct plate; a bending section extending from the end of the fixing section to form a gap with the rear surface of the outer air duct plate; and a connecting section extending rearward from the end of the bending section, with a snap hook formed at the end of the connecting section.

[0008] Optionally, the assembly panel further includes: a first extension section extending forward from the periphery of the rear wall panel; a second extension section extending away from the end of the first extension section in a direction away from the rear wall panel; a third extension section extending from the end of the second extension section to the rear end of the side panel; and when the hook is inserted into the snap-fit ​​groove, the connecting section abuts against the first extension section, and the bending section is opposite to the second extension section.

[0009] Optionally, a first reinforcing rib is formed at the connection between the fixed section and the bent section; and / or a second reinforcing rib is formed at the connection between the bent section and the connecting section.

[0010] Optionally, the external air duct plate and multiple snap-fit ​​parts are integrally injection molded; and the thickness of the external air duct plate, the fixed section, the bending section and the connecting section are equal.

[0011] Optionally, the air duct forming component further includes: an inner air duct plate disposed behind the outer air duct plate, and the rear side of the inner air duct plate forms an air outlet channel. When the air duct forming component is fixed to the inner liner, the rear side of the inner air duct plate abuts against the rear wall plate, so that the air outlet channel and the rear wall plate together define the air outlet duct.

[0012] Optionally, the inner air duct plate has multiple positioning grooves around its periphery. These grooves are configured to allow the connecting sections of multiple snap-fit ​​parts to pass through one-to-one, so as to pre-position the outer air duct plate and the inner air duct plate and facilitate the engagement of the snap hooks and snap-fit ​​grooves.

[0013] Optionally, the inner air duct plate has a first air outlet communicating with the air outlet duct, and the outer air duct plate has a second air outlet communicating with the first air outlet.

[0014] Optionally, a return air duct is provided between the inner air duct panel and the rear wall panel. The inner air duct panel has a first return air inlet connected to the return air duct, and the outer air duct panel has a second return air inlet connected to the first return air inlet.

[0015] In particular, the present invention also provides a refrigerator that includes the cabinet assembly of any of the above-mentioned items.

[0016] In the housing assembly of the present invention, since the mounting plate can be connected to the upper sides and top of the rear wall panel, and multiple snap-fit ​​grooves are formed on the rear wall panel near the edge of the mounting plate, multiple snap-fit ​​grooves can be provided on the sides and top of the rear wall panel. Correspondingly, multiple snap-fit ​​parts can be provided on the sides and top of the outer air duct plate, so as to securely connect the air duct forming member to the rear wall panel of the inner liner, thereby sealing the gap between the air outlet duct and the storage compartment.

[0017] Furthermore, in the housing assembly of the present invention, the fixed section extends rearward from one edge of the outer air duct plate, the bending section bends out from the end of the fixed section to form a gap with the rear surface of the outer air duct plate, and the connecting section extends rearward from the end of the bending section, with a hook formed at the end of the connecting section. That is, the fixed section is formed at the edge of the outer air duct plate and sequentially connects the bending section and the connecting section. During the injection molding process, the plastic raw material can sequentially pass through the outer air duct plate part, the fixed section part, the bending section part, and the connecting section part of the injection mold, ensuring uniform flow of the injection molding raw material and avoiding shrinkage deformation and internal stress concentration caused by uneven pressure during cooling, thereby improving the yield of the outer air duct plate.

[0018] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0019] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0020] Figure 1 This is a schematic diagram of a housing assembly according to an embodiment of the present invention;

[0021] Figure 2 This is an exploded view of a housing assembly according to an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a partial transverse cross-sectional view of a housing assembly according to an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 Enlarged view of section B in the middle. Detailed Implementation

[0025] In this description, it should be understood that the terms "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," and "depth," etc., indicate the orientation or positional relationship based on the refrigerator's normal operating state, and can be determined with reference to the orientation or positional relationship shown in the accompanying drawings. For example, "front" indicative of orientation refers to the side of the refrigerator facing the user. This is only for the convenience of describing the invention and simplifying the description, and is not intended to 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 the invention.

[0026] See Figures 1 to 5 , Figure 1 This is a schematic diagram of a housing assembly 1 according to an embodiment of the present invention. Figure 2 This is an exploded view of the housing assembly 1 according to an embodiment of the present invention. Figure 3 yes Figure 2 Enlarged view at point A in the middle. Figure 4 This is a partial transverse cross-sectional view of the housing assembly 1 according to an embodiment of the present invention. Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0027] See Figure 1 The present invention provides a refrigerator, which may include a cabinet assembly 1, the cabinet assembly 1 may further include an outer shell, an air duct forming member 20 and one or more inner liners 10 disposed within the outer shell. The space between the outer shell and the inner liners 10 is filled with thermal insulation material (forming a foam layer) to reduce heat dissipation from the inner liners 10.

[0028] See Figure 2 and Figure 4 The inner liner 10 also has an inner liner wall, which includes a rear wall panel 12, a side panel 14 located in front of the rear wall panel 12 and surrounding the periphery of the rear wall panel 12, and an assembly plate 16 formed between a portion of the periphery of the rear wall panel 12 and the side panel 14.

[0029] The inner liner 10 is roughly square in shape, and its walls enclose it into an independent chamber. The rear wall panel 12 is vertically positioned at the rear, and the side panels 14 extend forward around the periphery of the rear wall panel 12 to form the depth of the inner liner 10. An assembly plate 16 connects a portion of the periphery of the rear wall panel 12 to the side panels 14. Figure 2 As shown, the assembly plate 16 can be connected to the upper sides and top of the rear wall panel 12, and the remaining periphery of the rear wall panel 12 can be connected to the side panel 14 as needed through other sections of the inner liner wall. Specifically, the inner liner wall can be integrally formed using a stamping die.

[0030] The air duct forming member 20 is disposed inside the inner liner 10 and in front of the rear wall panel 12 to define an air outlet duct 233 and a storage compartment located in front of the air outlet duct 233 within the inner liner 10.

[0031] Specifically, the refrigerator can be a frost-free refrigerator. The frost-free refrigerator can send the refrigerated airflow cooled by the refrigeration system into the air outlet duct 233, and then send it into the storage compartment through the air duct forming member 20 to freeze or refrigerate items. The storage compartment can be divided into a refrigerator compartment, a freezer compartment, or a variable temperature compartment according to the temperature design.

[0032] See Figures 2 to 5 Furthermore, the rear wall panel 12 has a plurality of snap-fit ​​grooves 18 formed at the edge near the mounting plate 16, and the air duct forming member 20 also includes an outer air duct plate 210. The periphery of the outer air duct plate 210 has a plurality of snap-fit ​​portions 220, each snap-fit ​​portion 220 having a hook 222. The hooks 222 extend into the snap-fit ​​grooves 18 one by one to fix the air duct forming member 20 to the inner liner 10.

[0033] Since the mounting plate 16 can be connected to the upper sides and top of the rear wall panel 12, and multiple snap-fit ​​grooves 18 are formed on the edge of the rear wall panel 12 near the mounting plate 16, multiple snap-fit ​​grooves 18 can be provided on the sides and top of the rear wall panel 12. Correspondingly, multiple snap-fit ​​parts 220 can be provided on the sides and top of the outer air duct plate 210 so as to securely connect the air duct forming member 20 to the rear wall panel 12 of the inner liner wall, thereby sealing the gap between the air outlet duct 233 and the storage compartment.

[0034] See Figure 3 and Figure 5 Furthermore, each snap-fit ​​portion 220 may also include a fixed section 224, a bent section 226, and a connecting section 228. The fixed section 224 extends rearward from one edge of the outer air duct plate 210, the bent section 226 bends out from the end of the fixed section 224 to form a gap with the rear surface of the outer air duct plate 210, the connecting section 228 extends rearward from the end of the bent section 226, and a hook 222 is formed at the end of the connecting section 228.

[0035] Since the bending section 226 bends out from the end of the fixed section 224 to form a gap with the rear surface of the outer air duct plate 210, that is, the bending section 226 bends out from the fixed section 224 and extends into the outer air duct plate 210 relative to the edge, while the connecting section 228 extends rearward from the end of the bending section 226, and the hook 222 is formed at the end of the connecting section 228, that is, the hook 222 is ultimately formed inside the outer air duct plate 210 and does not extend out of the outer air duct plate 210. In this way, the position of the hook 222 will not affect the sealing effect between the air duct forming member 20 and the inner wall.

[0036] Furthermore, the external air duct plate 210 is integrally injection molded with multiple snap-fit ​​parts 220, that is, the external air duct plate 210 can be integrally injection molded with at least the fixed section 224, the bending section 226 and the connecting section 228.

[0037] During injection molding, a corresponding injection mold is first made according to the shape of the outer air duct plate 210 and the snap-fit ​​parts 220 distributed around the outer air duct plate 210. Then, the injection molding machine is used to inject the molten plastic raw material (such as polypropylene, abbreviated as PP material) into the injection mold so that the liquid plastic raw material flows in the cavity of the injection mold. Finally, after cooling and solidification, the mold is opened and the target product is ejected.

[0038] In this embodiment, since the fixed section 224 is formed on the edge of the outer air duct plate 210 and is connected to the bending section 226 and the connecting section 228 in sequence, during the injection molding process, the plastic raw material can pass through the outer air duct plate 210 part, the fixed section 224 part, the bending section 226 part and the connecting section 228 part of the injection mold in sequence, and finally converge at the end of the connecting section 228 to form a hook 222.

[0039] In other words, for a snap-fit ​​part 220, the injection molding material flows from the outer air duct plate 210 of the injection mold to the snap-fit ​​part 220 without any side branches. This ensures that the injection molding material flows evenly and maintains the pressure of each part as much as possible. This can avoid shrinkage, deformation, internal stress concentration and other phenomena caused by uneven pressure during the cooling process of the injection molding material.

[0040] In some other embodiments, the connecting section 228 may also be directly formed inside the outer air duct plate 210 (i.e., the connecting section 228 and the outer air duct plate 210 are arranged in a T-shape). However, during the injection molding process, when the injection molding material reaches the intersection of the connecting section 228 and the outer air duct plate 210, part of the injection molding material will flow along the connecting section 228 of the injection mold, and another part of the injection molding material will continue to flow along the outer air duct plate 210. This approach may have several drawbacks: First, due to the side-branch flow path of the injection molding material (i.e., the connecting section 228), the pressure of the injection molding material within the injection mold may be uneven, easily leading to surface shrinkage in some sections during cooling, resulting in overall deformation of the snap-fit ​​part 220. Second, since the connecting section 228 is directly formed on the inner side of the outer air duct plate 210, the cooling process of the injection molding material will cause the connecting section 228 to generate internal stress that stretches the outer air duct plate 210, causing indentations on the surface of the outer air duct plate 210, resulting in an uneven surface and reduced yield. Furthermore, a common solution to the problems in this embodiment is to add a notch at the intersection of the connecting section 228 and the outer air duct plate 210, i.e., reduce the thickness of the connecting section 228. While this alleviates the internal stress stretching the outer air duct plate 210 to some extent, it does not solve the shrinkage problem, and reducing the thickness of the connecting section 228 may weaken the strength of the snap-fit ​​part 220.

[0041] Therefore, by comparing the two embodiments above, it can be seen that the snap-fit ​​part 220 solution formed by the fixed section 224, the bending section 226, the connecting section 228 and the snap hook 222 provided at the end of the connecting section 228 can not only avoid surface shrinkage during injection molding, but also avoid the generation of internal stress in the snap-fit ​​part 220 during the cooling process, prevent unevenness of the surface of the molded outer air duct plate 210, and improve the yield rate.

[0042] In some specific embodiments, the thickness of the outer air duct plate 210, the fixed section 224, the bending section 226 and the connecting section 228 can be set to be equal. This can further ensure that the thickness of each part of the injection mold is equal, ensure that the injection molding material flows evenly, the pressure of each part is balanced, and the cooling speed is the same during cooling. This avoids the shrinkage of some surfaces due to different cooling speeds, and further improves the yield.

[0043] See Figure 5 Furthermore, the assembly panel 16 may also include a first extension segment ab, a second extension segment bc, and a third extension segment cd. The first extension segment ab extends forward from the periphery of the rear wall panel 12, the second extension segment bc extends away from the end of the first extension segment ab in a direction away from the rear wall panel 12, and the third extension segment cd extends from the end of the second extension segment bc to the rear end of the side panel 14. When the hook 222 is inserted into the snap-fit ​​groove 18, the connecting section 228 abuts against the first extension segment ab, and the bending section 226 is opposite to the second extension segment bc.

[0044] Since the snap-fit ​​groove 18 is formed on the rear wall panel 12 near the edge of the mounting plate 16, and the first extension plate segment ab extends forward from the periphery of the rear wall panel 12, one end of the snap-fit ​​groove 18 can be connected to the first extension plate segment ab. When the snap hook 222 is inserted into the snap-fit ​​groove 18, the connecting section 228 abuts against the first extension plate segment ab, and the bending section 226 is opposite to the second extension plate segment bc, which is beneficial to sealing the gap between the outer air duct plate 210 and the inner wall and improving the sealing performance.

[0045] See Figure 3 and Figure 5 Furthermore, a first reinforcing rib 225 is formed at the connection between the fixed section 224 and the bending section 226, and a second reinforcing rib 227 is formed at the connection between the bending section 226 and the connecting section 228. The first reinforcing rib 225 and the second reinforcing rib 227 can enhance the strength and rigidity of the snap-fit ​​part 220.

[0046] See Figure 2 and Figure 4 In some embodiments, the air duct forming member 20 may further include an inner air duct plate 230, which is disposed behind the outer air duct plate 210, and an air outlet channel 232 is formed on the rear side of the inner air duct plate 230. When the air duct forming member 20 is fixed to the inner liner 10, the rear side of the inner air duct plate 230 abuts against the rear wall plate 12 so that the air outlet channel 232 and the rear wall plate 12 together define the air outlet channel 233.

[0047] In this embodiment, the rear side of the inner air duct plate 230 is recessed inward to form an air outlet channel 232. The rear side of the inner air duct plate 230 abuts against the rear wall plate 12, and the air outlet channel 232 is sealed by the rear wall plate 12 to form an air outlet duct 233. An air inlet (not shown in the figure) connected to the formed air outlet duct 233 can also be opened at the bottom of the inner wall so that the refrigerated airflow that exchanges heat with the refrigeration system enters the air outlet duct 233 from the air inlet.

[0048] See Figure 2 Furthermore, the inner air duct plate 230 has a first air outlet 236 connected to the air outlet duct 233, and the outer air duct plate 210 has a second air outlet 212 connected to the first air outlet 236. The cooling airflow entering the air outlet duct 233 can be sent into the storage room through the first air outlet 236 and the second air outlet 212 in sequence to exchange heat with the items stored in the storage room.

[0049] Furthermore, a return air duct is provided between the inner air duct plate 230 and the rear wall plate 12. The return air duct is defined by the return air channel 234 formed in the inner air duct plate 230 and the rear wall plate 12. The inner air duct plate 230 has a first return air inlet 238 that communicates with the return air duct, and the outer air duct plate 210 has a second return air inlet 214 that communicates with the first return air inlet 238. The airflow that has finished exchanging heat with the items can pass through the second return air inlet 214 and the first return air inlet 238 in sequence to return to the air duct. An air outlet (not shown in the figure) can also be opened at the bottom of the inner wall. The airflow of the return air duct can be discharged into the cooling chamber of the refrigerator through the air outlet, exchange heat with the refrigeration system, and then continue to be sent into the air outlet duct 233 to form a circulating airflow.

[0050] See Figure 2 and Figure 5 Furthermore, the inner air duct plate 230 has a plurality of positioning grooves 239 around its periphery. The plurality of positioning grooves 239 are configured to allow the connecting sections 228 of the plurality of snap-fit ​​parts 220 to pass through one-to-one, so as to pre-position the outer air duct plate 210 and the inner air duct plate 230, and to facilitate the engagement of the snap hook 222 with the snap-fit ​​groove 18.

[0051] Since the inner air duct plate 230 is located inside the outer air duct plate 210, that is, the inner air duct plate 230 is located between the rear wall plate 12 of the inner liner and the outer air duct plate 210, and the snap-fit ​​groove 18 is located on the rear wall plate 12 of the inner liner, the positioning groove 239 can avoid the connecting section 228 of the snap-fit ​​part 220 so that the snap hook 222 formed at the end of the connecting section 228 can cooperate with the snap-fit ​​groove 18 located on the rear wall plate 12.

[0052] Furthermore, since there are multiple snap-fit ​​parts 220 and positioning grooves 239, and they are arranged in a one-to-one correspondence, when the connecting sections 228 of the multiple snap-fit ​​parts 220 pass through the positioning grooves 239, they can also pre-position the inner air duct plate 230 on the outer air duct plate 210 for assembly.

[0053] In the housing assembly 1 of the present invention, since the mounting plate 16 can be connected to the upper sides and top of the rear wall panel 12, and multiple snap-fit ​​grooves 18 are formed on the edge of the rear wall panel 12 near the mounting plate 16, multiple snap-fit ​​grooves 18 can be provided on the sides and top of the rear wall panel 12. Correspondingly, multiple snap-fit ​​parts 220 can be provided on the sides and top of the outer air duct plate 210 so as to securely connect the air duct forming member 20 to the rear wall panel 12 of the inner liner wall, thereby sealing the gap between the air outlet duct 233 and the storage compartment.

[0054] Furthermore, in the housing assembly 1 of the present invention, the fixed section 224 extends rearward from one edge of the outer air duct plate 210, the bending section 226 bends out from the end of the fixed section 224 to form a gap with the rear surface of the outer air duct plate 210, and the connecting section 228 extends rearward from the end of the bending section 226, and the hook 222 is formed at the end of the connecting section 228. That is, the fixed section 224 is formed at the edge of the outer air duct plate 210 and the bending section 226 and the connecting section 228 are connected in sequence. During the injection molding process, the plastic raw material can pass through the outer air duct plate 210 part, the fixed section 224 part, the bending section 226 part and the connecting section 228 part of the injection mold in sequence, ensuring uniform flow of the injection molding raw material and avoiding shrinkage deformation and internal stress concentration caused by uneven pressure during the cooling process.

[0055] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A cabinet assembly for a refrigerator, characterized in that... include: An inner liner having an inner wall, the inner wall including a rear wall panel, side panels located in front of the rear wall panel and surrounding its periphery, and an assembly plate formed between a portion of the periphery of the rear wall panel and the side panels, the rear wall panel having a plurality of snap-fit ​​grooves formed at an edge near the assembly plate; and An air duct forming component is disposed inside the inner liner, in front of the rear wall panel, to define an air outlet duct and a storage compartment in front of the air outlet duct within the inner liner. The air duct forming component also includes an outer air duct plate, the periphery of which is formed with a plurality of snap-fit ​​portions, each of which has a hook. The hooks extend into the snap-fit ​​grooves in a corresponding manner to fix the air duct forming component to the inner liner. The external air duct plate and the plurality of the snap-fit ​​parts are integrally injection molded; Each of the aforementioned snap-fit ​​portions further includes: A fixed section extends rearward from one edge of the external air duct panel; A bent section extends from the end of the fixed section to form a gap with the rear surface of the external air duct plate; and A connecting section extends rearward from the end of the bent section, and the hook is formed at the end of the connecting section; The assembly plate also includes: The first extension segment extends forward from the periphery of the rear wall panel; The second extension plate segment extends from the end of the first extension plate segment in a direction away from the rear wall plate; The third extension segment extends from the end of the second extension segment to the rear end of the side panel; and When the hook extends into the slot, the connecting section abuts against the first extension plate section, and the bending section is opposite to the second extension plate section.

2. The housing assembly according to claim 1, characterized in that... A first reinforcing rib is formed at the connection between the fixed section and the bent section; and / or A second reinforcing rib is formed at the connection between the bending section and the connecting section.

3. The housing assembly according to claim 1, characterized in that... The thicknesses of the external air duct plate, the fixed section, the bending section, and the connecting section are equal.

4. The housing assembly according to claim 1, characterized in that... The air duct forming component also includes: An inner air duct plate is disposed behind the outer air duct plate, and an air outlet channel is formed on the rear side of the inner air duct plate. When the air duct forming member is fixed to the inner liner, the rear side of the inner air duct plate abuts against the rear wall plate, so that the air outlet channel and the rear wall plate together define the air outlet duct.

5. The housing assembly according to claim 4, characterized in that... The inner air duct plate has multiple positioning grooves around its periphery. These positioning grooves are configured to allow the connecting sections of the multiple snap-fit ​​parts to pass through one-to-one, so as to pre-position the outer air duct plate and the inner air duct plate and facilitate the engagement of the snap hooks with the snap-fit ​​grooves.

6. The housing assembly according to claim 4, characterized in that... The inner air duct plate has a first air outlet connected to the air outlet duct, and the outer air duct plate has a second air outlet connected to the first air outlet.

7. The housing assembly according to claim 4, characterized in that... There is also a return air duct between the inner air duct plate and the rear wall plate. The inner air duct plate has a first return air inlet that communicates with the return air duct, and the outer air duct plate has a second return air inlet that communicates with the first return air inlet.

8. A refrigerator, characterized in that... Includes the housing assembly according to any one of claims 1 to 7.

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