A refrigerator

Abstract

The application discloses a refrigerator, and belongs to the technical field of refrigeration equipment, and aims to solve the technical problem of large temperature difference in the storage chamber of a related refrigerator. The refrigerator comprises an inner container and an air duct assembly; a cavity side wall of the inner container is provided with a first air supply groove and a second air supply groove; the first air supply groove comprises a first air supply section and a second air supply section; the second air supply section is in communication with one end of the first air supply section close to the installation side wall; one side of the air duct assembly towards the storage chamber is provided with an air outlet, and the air outlet blows air towards the second air supply section. When there are many stacked articles in the storage chamber, or the height of the stacked articles is higher than the height of the air outlet, the air blown from the air outlet to the storage chamber can be transported along the first air supply groove to different positions of the storage chamber along the length direction, and transported along the second air supply groove to different positions of the storage chamber along the height direction, so that the coverage range of the cold air blown from the air outlet along the length direction and the height direction of the storage chamber is increased, and the temperature difference in the storage chamber is reduced.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, and more particularly to a freezer. Background Technology

[0002] A freezer is a device used to preserve food and other items at low temperatures. A freezer typically includes a cabinet with a storage compartment, a door for opening or closing the storage compartment, and an air duct assembly for supplying cold air to the storage compartment.

[0003] In related technologies, the air duct assembly is installed inside a cabinet, dividing the cabinet into a storage chamber and an evaporation chamber, with the evaporator located inside the evaporation chamber. An air outlet is constructed on the side of the air duct assembly facing the storage chamber, and the air outlet connects to both the storage chamber and the evaporation chamber. Cold air from the evaporation chamber is delivered to the storage chamber through the air outlet to lower the temperature inside the storage chamber.

[0004] However, the freezers in question have the problem of large temperature differences within the storage compartment. Utility Model Content

[0005] This application provides a freezer that can solve the technical problem of large temperature differences in the storage compartment of related freezers.

[0006] This application provides a freezer, including:

[0007] The inner liner is constructed to form a cavity; the inner liner includes adjacent mounting sidewalls and cavity sidewalls;

[0008] An air duct assembly is installed on the side wall of the installation; the air duct assembly is used to form an air cavity; the air duct assembly and the inner liner enclose a storage chamber; the side of the air duct assembly facing the storage chamber has an air outlet, which is connected to both the storage chamber and the air cavity.

[0009] The cavity sidewall structure includes:

[0010] A first air supply channel extends along a first direction, and the first direction forms an angle with the height direction of the cavity sidewall; the first air supply channel includes:

[0011] First air supply section;

[0012] The second air supply section is connected to the end of the first air supply section near the installation side wall. The distance between the bottom of the slot and the opening of the second air supply section increases from the end away from the first air supply section to the end near the first air supply section.

[0013] The second air supply duct extends along a second direction, and the second direction forms an angle with the length direction of the cavity sidewall; the second air supply duct is connected to the first air supply section.

[0014] The air outlet is configured to direct airflow toward the second air supply section.

[0015] In the refrigerator of this application embodiment, when there are many items stacked in the storage room, or when the height of the stacked items is higher than the height of the air outlet, the air blown from the air outlet into the storage room can be transported along the first air supply channel to different positions along the length direction of the storage room, and along the second air supply channel to different positions along the height direction of the storage room, thereby increasing the coverage of the cold air blown from the air outlet along the length and height directions of the storage room, and reducing the temperature difference along the length and height directions of the storage room.

[0016] In some embodiments of this application, the first air supply trough further includes a third air supply section, which is connected to the end of the first air supply section away from the mounting sidewall, and the distance between the bottom of the third air supply section and the opening of the third air supply section decreases from the end closer to the first air supply section to the end farther away from the first air supply section.

[0017] With this configuration, the bottom of the third air supply section can guide the air blown from the first air supply section into the third air supply section, allowing the air in the third air supply section to flow more easily along the inclined bottom of the third air supply section in a direction away from the first air supply section. This facilitates the airflow out of the third air supply section and into the storage room, reducing the possibility of air stagnation in the third air supply section and increasing the airflow rate from the first air supply trough to the storage room, thereby improving the cooling efficiency of the storage room.

[0018] In some embodiments of this application, the air duct assembly includes an air supply cover, the air supply cover comprising:

[0019] The air supply panel body has an air outlet.

[0020] An air supply baffle is installed on the side of the air supply baffle body facing the storage chamber, and is located on the side of the air outlet away from the side wall of the chamber.

[0021] With this configuration, the air supply baffle can block the end of the air outlet away from the cavity sidewall, so that the air blown into the storage room from the air outlet can be blown out from the side of the air outlet closest to the cavity sidewall as much as possible. This increases the amount of air blown into the first air supply channel, allowing cold air to be delivered to the end of the first and second air supply channels away from the installation sidewall, thereby reducing the temperature difference in the storage room along the length and height.

[0022] In some embodiments of this application, an air outlet guide plate is provided inside the air outlet, and the end of the air outlet guide plate closer to the storage chamber is inclined toward the cavity sidewall compared with the end farther away from the storage chamber.

[0023] This configuration directs the air blown from the air outlet toward the storage chamber toward the side wall of the chamber, thereby increasing the amount of air blown toward the first air duct. This allows cold air to be delivered to the end of the first and second air ducts away from the installation side wall, thereby reducing the temperature difference in the storage chamber along its length and height.

[0024] In some embodiments of this application, there are multiple second air supply channels, and the multiple second air supply channels are arranged at intervals along the length direction of the cavity sidewall.

[0025] This design increases the coverage of the cold air blown out of the air outlet along the length and height of the storage room, and reduces the temperature difference along the length and height of the storage room.

[0026] In some embodiments of this application, the second air supply duct includes:

[0027] The fourth air supply section is connected to the first air supply section;

[0028] The fifth air supply section is connected to at least one end of the fourth air supply section in the direction of extension, and the distance between the bottom of the fifth air supply section and the opening of the fifth air supply section decreases from the end closer to the fourth air supply section to the end farther away from the fourth air supply section.

[0029] With this configuration, the bottom of the fifth air supply section can guide the air blown from the fourth air supply section into the fifth air supply section, allowing the air in the fifth air supply section to flow more easily along the inclined bottom of the fifth air supply section in a direction away from the fourth air supply section. This facilitates the airflow out of the fifth air supply section and into the storage room, reducing the possibility of air stagnation in the fifth air supply section and increasing the airflow rate from the second air supply trough to the storage room, thereby improving the cooling efficiency of the storage room.

[0030] In some embodiments of this application, the side of the air duct assembly facing the storage room is also provided with a return air inlet, which is connected to the storage room and the air cavity respectively.

[0031] The cavity sidewalls are also constructed with:

[0032] The first return air duct extends along a third direction, and the third direction forms an angle with the height direction of the cavity sidewall;

[0033] The second return air duct extends along the fourth direction, and the fourth direction forms an angle with the length direction of the cavity sidewall; the second return air duct is connected to the first return air duct.

[0034] The return air vent faces the end of the first return air duct closest to the installation side wall.

[0035] With this configuration, when there are many items stacked in the storage room, or when the height of the stacked items is higher than the height of the return air vent, the air near the side wall of the storage room can flow back to the return air vent through the second return air duct and the first return air duct. This allows air at different locations along the length and height of the storage room to still flow back to the return air vent, increasing the air circulation rate between the storage room and the return air cavity and the supply air cavity, thereby improving the cooling efficiency of the storage room.

[0036] In some embodiments of this application, the first return air duct includes:

[0037] The first return air section extends in a third direction;

[0038] The second return air section is connected to the end of the first return air section near the installation side wall. The distance between the bottom of the second return air section and the opening of the second return air section increases from the end away from the first return air section to the end closer to the first return air section.

[0039] With this design, the bottom of the second return air section can guide the air blown into the second return air section, allowing the air in the second return air section to flow more easily along the inclined bottom of the second return air section in a direction away from the first return air section. This facilitates the airflow out of the second return air section and towards the return air vent, reducing the possibility of air stagnation in the second return air section. It also increases the airflow rate and return air efficiency from the first return air duct to the return air vent, thereby improving the cooling efficiency of the storage room.

[0040] In some embodiments of this application, the second return air duct includes:

[0041] The fourth return air section is connected to the first return air section;

[0042] The fifth return air section is connected to at least one end of the fourth return air section in the direction of extension. The distance between the bottom of the fifth return air section and the opening of the fifth return air section decreases from the end closer to the fourth return air section to the end farther away from the fourth return air section.

[0043] With this configuration, the bottom of the fifth return air section can guide the air flowing from the storage room to the fifth return air section, making it easier for the air flowing from the storage room to the fifth return air section to flow along the inclined bottom of the fifth return air section to the fourth return air section. This reduces the possibility of air stagnation in the fifth return air section, improves the return air efficiency between the storage room and the return air inlet, and thus improves the cooling efficiency of the storage room.

[0044] In some embodiments of this application, the air duct assembly includes a return air cover, which is configured with a return air inlet.

[0045] The return air cover includes:

[0046] The return air panel body has a through-hole in its structure;

[0047] The return air baffle is located on the side of the return air baffle body facing the storage room, and the end of the return air baffle away from the cavity sidewall is connected to the edge of the through opening away from the cavity sidewall. The end of the return air baffle near the cavity sidewall is spaced apart from the return air baffle body and forms a return air inlet, which is connected to the through opening.

[0048] With this configuration, the return air inlet faces the side wall of the cavity, making it easier for the air from the end of the first return air duct closest to the mounting side wall to flow to the return air inlet. Attached Figure Description

[0049] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0050] Figure 1 A schematic diagram of the structure of the freezer according to an embodiment of this application is shown;

[0051] Figure 2 It shows Figure 1 A structural diagram of the refrigerated display case after the door has been removed;

[0052] Figure 3 It shows Figure 2 Schematic diagram of the structure of the inner liner and air duct assembly;

[0053] Figure 4 It shows Figure 3 Sectional view along the middle AA direction;

[0054] Figure 5 It shows Figure 4 Sectional view along the BB direction;

[0055] Figure 6 It shows Figure 4 Schematic diagram of the structure of the central air supply cover;

[0056] Figure 7 It shows Figure 5 A magnified view of a portion of point P1 in the middle;

[0057] Figure 8 It shows Figure 4 A cross-sectional view along the CC direction;

[0058] Figure 9 It shows Figure 4 Sectional view along the DD direction;

[0059] Figure 10 It shows Figure 9 A magnified view of a portion of point P2.

[0060] Explanation of reference numerals in the attached figures:

[0061] 10-Cabinet body; 110-Outer shell; 120-Inner liner; 1202-Storage chamber; 1203-Intake / Removal port; 121-Bottom wall of the liner; 122-Baffle side wall; 123-Mounting side wall; 1231-First wall; 1232-Second wall; 1233-Connecting wall; 124-Cavity side wall;

[0062] 125 - First air supply duct; 1251 - First air supply section; 1252 - Second air supply section; 1253 - Bottom of the duct in the second air supply section; 1254 - Third air supply section;

[0063] 126 - Second air supply duct; 1261 - Fourth air supply section; 1262 - Fifth air supply section; 1263 - Bottom of the duct of the fifth air supply section;

[0064] 127 - First return air duct; 1271 - First return air section; 1272 - Second return air section; 1273 - Bottom of the second return air section duct; 1274 - Third return air section;

[0065] 128 - Second return air duct; 1281 - Fourth return air section; 1282 - Fifth return air section;

[0066] 20-Gate body;

[0067] 30 - Air duct assembly; 301 - Air cavity; 302 - Supply air cavity; 303 - Return air cavity;

[0068] 310 - Air supply cover; 311 - Air supply plate body; 3111 - Air outlet; 3112 - Air inlet; 3113 - First auxiliary air outlet; 312 - Air supply baffle; 313 - Air outlet guide plate; 314 - Support plate;

[0069] 320 - Return air cover; 321 - Return air panel body; 3211 - Through opening; 3212 - Return air gap; 3213 - Second auxiliary air outlet; 322 - Return air baffle; 3221 - Return air outlet; 323 - Supporting rib;

[0070] 40 - Fan;

[0071] 50 - Evaporator. Detailed Implementation

[0072] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0073] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0074] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0075] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0076] As stated in the background section, the freezers in the relevant technology suffer from a large temperature difference within the storage compartment. The inventors discovered that this is because items inside the freezers are typically stacked within the storage compartment. When the stacked items are too high, they can easily block the cold air blowing from the air outlet, making it difficult for the cold air to reach the areas of the storage compartment that are obstructed by the items, thus leading to a large temperature difference within the storage compartment.

[0077] To address the aforementioned technical problems, this application provides a refrigerator with a first air supply duct and a second air supply duct connected to each other on the side wall of the cavity. The air outlet faces the first air supply duct. When there are many items stacked in the storage compartment, or when the height of the stacked items is higher than the height of the air outlet, the air blown from the air outlet into the storage compartment can be transported along the first air supply duct to different positions along the length of the storage compartment, and along the second air supply duct to different positions along the height of the storage compartment. This increases the coverage of the cold air blown from the air outlet along the length and height of the storage compartment, and reduces the temperature difference along the length and height of the storage compartment.

[0078] In addition, the first air supply duct includes a first air supply section and a second air supply section; the second air supply section is connected to the end of the first air supply section near the mounting side wall, and the distance between the bottom of the second air supply section and the opening of the second air supply section increases from the end away from the first air supply section to the end closer to the first air supply section. The bottom of the second air supply section can guide the air blown into the second air supply section, so that the air in the second air supply section can more easily flow to the first air supply section along the inclined bottom of the second air supply section, reducing the possibility of air stagnation in the second air supply section, increasing the air circulation rate from the first air supply duct to the storage room, and thus improving the cooling efficiency of the storage room.

[0079] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0080] refer to Figure 1 and Figure 2 The freezer provided in this embodiment may include a cabinet body 10, a door 20, a refrigeration unit, and an air duct assembly 30. The cabinet body 10 may have a storage compartment 1202. The door 20 is rotatably connected to the cabinet body 10 to open or close the storage compartment 1202. The refrigeration unit is disposed inside the cabinet body 10 and is used to provide cold air to the storage compartment 1202. The air duct assembly 30 is disposed inside the cabinet body 10 and is used to transport the cold air provided by the refrigeration unit to the storage compartment 1202 to reduce the temperature of the storage compartment 1202.

[0081] refer to Figure 3 and Figure 4 The refrigeration unit may include a compressor, a condenser, a throttling element, and an evaporator 50. The compressor, condenser, throttling element, and evaporator 50 may be connected in series via pipes, through which refrigerant may flow. The throttling element may be a capillary tube or an electronic expansion valve, etc.

[0082] When the freezer cools the storage compartment 1202, the refrigerant circulates within the compressor, condenser, throttling element, and evaporator 50. As it flows through the evaporator 50, it absorbs heat and lowers the temperature of the evaporator 50 and the surrounding air. The air flowing through the evaporator 50 is then delivered into the storage compartment 1202 to further reduce the temperature inside the compartment.

[0083] refer to Figure 2 The cabinet 10 may include an outer shell 110 and an inner liner 120. The outer shell 110 is attached to the outside of the inner liner 120 to form the appearance of the cabinet 10.

[0084] The inner liner 120 is constructed to form a gallbladder cavity, and the storage chamber 1202 can occupy part of the space of the gallbladder cavity. The top of the gallbladder cavity can be formed with a retrieval port 1203, which is connected to the storage chamber 1202. Items can be retrieved from or placed into the storage chamber 1202 through the retrieval port 1203.

[0085] A heat insulation cavity can be formed between the outer shell 110 and the inner liner 120. The heat insulation cavity can be filled with heat insulation material, such as foaming agent. The heat insulation material can reduce the heat exchange between the storage chamber 1202 and the outside of the outer shell 110, thereby achieving the heat preservation effect of the storage chamber 1202.

[0086] refer to Figure 3 The inner liner 120 may include an installation sidewall 123, two cavity sidewalls 124, a flow-blocking sidewall 122, and a bottom wall 121.

[0087] The mounting sidewall 123 and the flow-blocking sidewall 122 can be arranged relatively apart along the length direction X of the inner liner 120. The two cavity sidewalls 124 can be arranged relatively apart along the width direction Y of the inner liner 120. The mounting sidewall 123, cavity sidewall 124, flow-blocking sidewall 122, and the other cavity sidewall 124 are connected end to end along the periphery of the inner liner 120. The bottom ends of the mounting sidewall 123, cavity sidewall 124, flow-blocking sidewall 122, and the other cavity sidewall 124 are respectively connected to the bottom wall 121 of the liner, and together they form the appearance of the inner liner 120.

[0088] refer to Figure 4 The mounting sidewall 123 may include a first wall 1231, a second wall 1232, and a connecting wall 1233.

[0089] The first wall 1231 is opposite to the portion of the flow-blocking side wall 122 near the bottom wall 121 of the gallbladder, and the bottom end of the first wall 1231 is connected to the bottom wall 121 of the gallbladder.

[0090] The second wall 1232 is opposite to the portion of the baffle sidewall 122 near the pick-up / release port 1203, and the top of the second wall 1232 forms part of the edge of the pick-up / release port 1203.

[0091] The second wall 1232 is farther away from the flow-blocking side wall 122 than the first wall 1231. The two ends of the connecting wall 1233 along the length direction X of the inner liner 120 are respectively connected to the top of the first wall 1231 and the bottom of the second wall 1232, so as to form a space below the connecting wall 1233 for accommodating some components of the refrigeration device.

[0092] Door 20 is rotatably connected to cabinet 10 to open and close access port 1203. When access port 1203 is opened, items can be taken from or placed into storage room 1202 through access port 1203.

[0093] When the door 20 closes the retrieval port 1203 (reference) Figure 1 The door 20 can reduce the leakage of cold air from the storage compartment 1202 through the access port 1203, thereby improving the cooling effect of the freezer on the items in the storage compartment 1202.

[0094] The door 20 can be rotatably connected to the outer shell 110. Due to the high structural strength of the outer shell 110, the rotatable connection between the door 20 and the outer shell 110 can improve the reliability of the connection between the door 20 and the cabinet 10.

[0095] refer to Figure 3 and Figure 4 The air duct assembly 30 is disposed within the bladder cavity and connected to the mounting side wall 123. The air duct assembly 30 and the inner bladder 120 enclose a storage chamber 1202, which occupies part of the space within the bladder cavity.

[0096] refer to Figure 4 The air duct assembly 30 is used to form the air cavity 301. The air duct assembly 30 can be configured to form the air cavity 301, or the air duct assembly 30 can be enclosed with the inner liner 120 to form the air cavity 301. The evaporator 50 can be disposed in the air cavity 301. When the refrigeration device is working, the temperature of the evaporator 50 and the air cavity 301 decreases.

[0097] refer to Figure 4 The air duct assembly 30 facing the storage chamber 1202 can be configured with an air outlet 3111 and a return air outlet 3221. The air outlet 3111 is connected to the storage chamber 1202 and the air cavity 301 respectively, and the return air outlet 3221 is connected to the storage chamber 1202 and the air cavity 301 respectively.

[0098] The temperature of the air in the air cavity 301 after heat exchange with the evaporator 50 is reduced, and it is blown from the air outlet 3111 into the storage chamber 1202 to reduce the temperature inside the storage chamber 1202.

[0099] After absorbing heat, the air blown from the air cavity 301 into the storage chamber 1202 flows back into the air cavity 301 through the return air vent 3221 to exchange heat with the evaporator 50. This cycle continues to supply low-temperature air into the storage chamber 1202, maintaining the low-temperature environment of the storage chamber 1202.

[0100] In some possible implementations of the embodiments of this application, reference is made to Figure 3 and Figure 4 The air duct assembly 30 includes an air supply cover 310, which has an air outlet 3111.

[0101] refer to Figure 4 The air cavity 301 may include an air supply cavity 302 and an air return cavity 303.

[0102] The air supply cover 310 can be disposed on the mounting side wall 123 and together with the mounting side wall 123 to form an air supply cavity 302, which is connected to the air outlet 3111. The storage chamber 1202 and the air supply cavity 302 are located on both sides of the air supply cover 310.

[0103] refer to Figure 3 and Figure 4 The air duct assembly 30 may also include a return air cover 320, and the side of the air duct assembly 30 facing the storage compartment 1202 may include a portion of the supply air cover 310 and the return air cover 320.

[0104] The return air cover 320 is configured with a return air inlet 3221, which can be located below the air outlet 3111. The cold air blown from the air outlet 3111 towards the storage room 1202 can first cover the upper area of ​​the storage room 1202, and then, due to the high density of cold air, it diffuses downwards and covers the lower area of ​​the storage room 1202, thus increasing the height range of the storage room 1202 that can be covered by the cold air blown from the air outlet 3111.

[0105] The top of the return air cover 320 can be connected to the supply air cover 310, and the bottom of the return air cover 320 can extend away from the mounting side wall 123.

[0106] The return air cover 320, the supply air cover 310, and the mounting side wall 123 can be enclosed to form a return air cavity 303, which is connected to the return air inlet 3221. The evaporator 50 can be installed inside the return air cavity 303.

[0107] refer to Figure 4 The air supply cover 310 may be configured with an air inlet 3112, which is connected to the air supply chamber 302 and the return air chamber 303 respectively. The air in the storage chamber 1202 flows into the return air chamber 303 through the return air inlet 3221. After the air in the return air chamber 303 exchanges heat with the evaporator 50, its temperature decreases, and it flows into the air supply chamber 302 through the air inlet 3112, and then is delivered to the storage chamber 1202 through the air outlet 3111, so as to lower the temperature in the storage chamber 1202.

[0108] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The freezer may also include a fan 40. The fan 40 may be installed in the air duct assembly 30, and the fan 40 is used to direct the air in the air cavity 301 from the return air port 3221 to the air outlet 3111.

[0109] The fan 40 can be installed inside the air supply cavity 302, with its inlet facing the air inlet 3112 and its outlet facing the air supply cavity 302. The fan 40 can be connected to the air supply cover 310 or mounted on the side wall 123. When the fan 40 is working, the air in the return air cavity 303 flows through the air inlet 3112 to the inlet of the fan 40, and after being accelerated and pressurized by the fan 40, it flows to the air supply cavity 302, thereby increasing the air flow rate between the air cavity 301 and the storage chamber 1202 and improving the cooling efficiency of the storage chamber 1202.

[0110] In some possible implementations of the embodiments of this application, reference is made to Figure 3The cavity sidewall 124 may be constructed with a first air supply groove 125, which extends along a first direction. The first direction forms an angle with the height direction Z of the cavity sidewall 124. The angle between the first direction and the height direction Z of the cavity sidewall 124 can be 90°, that is, the first direction is along the length direction X of the cavity sidewall 124. The angle between the first direction and the height direction Z of the cavity sidewall 124 can also be less than 90°, as long as the projection of the first air supply groove 125 on the bottom wall 121 extends along the length direction X of the cavity sidewall 124. This increases the coverage area of ​​the first air supply groove 125 along the length direction X of the cavity sidewall 124.

[0111] refer to Figure 3 The first air supply trough 125 may include a first air supply section 1251, which extends along a first direction. The bottom of the first air supply section 1251 may be substantially parallel to the wall surface of the cavity sidewall 124.

[0112] It should be noted that the bottom of the first air supply section 1251 and the opening of the first air supply section 1251 are opposite each other along the width direction Y of the inner liner 120. The opening of the first air supply section 1251 is connected to the storage chamber 1202. The bottom of the first air supply section 1251 is farther away from the storage chamber 1202 than the opening of the first air supply section 1251. The dimension between the bottom of the first air supply section 1251 and the opening of the first air supply section 1251 is the depth of the first air supply section 1251.

[0113] refer to Figure 3 The first air supply duct 125 may also include a second air supply section 1252, which is connected to the end of the first air supply section 1251 near the mounting side wall 123.

[0114] refer to Figure 4 The air outlet 3111 is used to direct air towards the second air supply section 1252. The air blown from the air outlet 3111 towards the storage chamber 1202 first flows to the second air supply section 1252, and then from the second air supply section 1252 to the first air supply section 1251. The air in the first air supply section 1251 can flow from the slot of the first air supply section 1251 into the storage chamber 1202. Since the first air supply section 1251 extends along the first direction, the air flowing towards the first air supply section 1251 can increase the coverage area of ​​the air outlet along the length direction X of the cavity sidewall 124, thereby increasing the coverage area of ​​the air blown from the air outlet 3111 along the length direction X of the storage chamber 1202 and reducing the temperature difference in the storage chamber 1202 along the length direction X.

[0115] refer to Figure 4 and Figure 5The distance between the bottom 1253 of the second air supply section 1252 and the opening of the second air supply section 1252 increases from the end away from the first air supply section 1251 to the end closer to the first air supply section 1251. The bottom 1253 of the second air supply section 1252 can guide the air blown into the second air supply section 1252, so that the air in the second air supply section 1252 can more easily flow along the inclined bottom 1253 of the second air supply section 1252 to the first air supply section 1251, reducing the possibility of air stagnation in the second air supply section 1252, increasing the air circulation rate from the first air supply trough 125 to the storage room 1202, and thus improving the cooling efficiency of the storage room 1202.

[0116] refer to Figure 3 The cavity sidewall 124 may also be constructed with a second air supply groove 126, which extends along a second direction, forming an angle with the length direction X of the cavity sidewall 124. The angle between the second direction and the length direction X of the cavity sidewall 124 can be 90°, which is the second direction along the height direction Z of the cavity sidewall 124. The angle between the second direction and the length direction X of the cavity sidewall 124 can also be less than 90°, as long as the projection of the second air supply groove 126 onto the baffle sidewall 122 extends along the height direction Z of the baffle sidewall 122. This increases the coverage area of ​​the second air supply groove 126 along the height direction Z of the cavity sidewall 124.

[0117] The second air supply duct 126 is connected to the first air supply section 1251. (Reference) Figure 4 The airflow indicated by the green arrows indicates that the air blowing from the air outlet 3111 into the storage chamber 1202 flows to the second air supply section 1252, then to the first air supply section 1251, and further to the second air supply duct 126, flowing into the storage chamber 1202 from the opening of the second air supply duct 126. Since the second air supply duct 126 extends along the second direction, the air flowing into the second air supply duct 126 increases the coverage area of ​​the air outlet along the height direction Z of the cavity sidewall 124, thereby increasing the coverage area of ​​the air blown from the air outlet 3111 along the height direction Z of the storage chamber 1202 and reducing the temperature difference in the storage chamber 1202 along the height direction Z.

[0118] When there are many items stacked in the storage room 1202, or when the height of the stacked items is higher than the height of the air outlet 3111, the air blown from the air outlet 3111 to the storage room 1202 can be transported along the first air supply channel 125 to different positions along the length direction X of the storage room 1202, and along the second air supply channel 126 to different positions along the height direction Z of the storage room 1202. This increases the coverage of the cold air blown from the air outlet 3111 along the length direction X and height direction Z of the storage room 1202, and reduces the temperature difference along the length direction X and height direction Z of the storage room 1202.

[0119] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The air outlet 3111 can extend along the height direction Z of the inner liner 120 so that the cold air blown from the air outlet 3111 to the storage room 1202 can cover the height area of ​​the storage room 1202 and the first air supply duct 125, thereby reducing the temperature difference of the storage room 1202 along the height direction Z.

[0120] In some possible implementations of the embodiments of this application, reference is made to Figure 5 The first air supply trough 125 may also include a third air supply section 1254, which is connected to the end of the first air supply section 1251 away from the mounting side wall 123. The distance between the bottom of the trough of the third air supply section 1254 and the opening of the trough of the third air supply section 1254 decreases from the end closer to the first air supply section 1251 to the end away from the first air supply section 1251. The bottom of the third air supply section 1254 can guide the air blown from the first air supply section 1251 into the third air supply section 1254, allowing the air in the third air supply section 1254 to flow more easily along the inclined bottom of the third air supply section 1254 in a direction away from the first air supply section 1251, so that it can flow out of the third air supply section 1254 and into the storage chamber 1202. This reduces the possibility of air stagnation in the third air supply section 1254, increases the air circulation rate from the first air supply trough 125 to the storage chamber 1202, and thus improves the cooling efficiency of the storage chamber 1202.

[0121] In some possible implementations of the embodiments of this application, reference is made to Figure 6 The air supply cover 310 may include an air supply plate body 311, which may be configured with an air outlet 3111 and an air inlet 3112.

[0122] refer to Figure 6 The air supply cover 310 may further include an air supply baffle 312, which is disposed on the side of the air supply plate body 311 facing the storage chamber 1202 and located on the side of the air outlet 3111 away from the cavity sidewall 124. The air supply baffle 312 can block the end of the air outlet 3111 away from the cavity sidewall 124, so that the air blown from the air outlet 3111 to the storage chamber 1202 can be blown out as close as possible to the side of the air outlet 3111 to the cavity sidewall 124, thereby increasing the amount of air blown to the first air supply duct 125, so that cold air can be delivered to the end of the first air supply duct 125 and the second air supply duct 126 away from the mounting sidewall 123, thereby reducing the temperature difference of the storage chamber 1202 along the length direction X and the height direction Z.

[0123] In some possible implementations of the embodiments of this application, reference is made to Figure 6 and Figure 7An air outlet guide plate 313 can be installed inside the air outlet 3111. The end of the air outlet guide plate 313 closer to the storage chamber 1202 is inclined toward the cavity side wall 124 compared to the end farther away from the storage chamber 1202, so as to guide the air blown from the air outlet 3111 toward the storage chamber 1202 toward the cavity side wall 124, thereby increasing the amount of air blown toward the first air supply channel 125, so that cold air can be delivered to the end of the first air supply channel 125 and the second air supply channel 126 away from the installation side wall 123, thereby reducing the temperature difference of the storage chamber 1202 along the length direction X and the height direction Z.

[0124] In some possible implementations of the embodiments of this application, reference is made to Figure 6 Multiple support plates 314 arranged at Z-intervals along the height direction of the inner liner 120 can be provided inside the air outlet 3111. The air outlet guide plate 313 can be set between two adjacent support plates 314. The support plates 314 support the air outlet guide plate 313 to improve the structural strength of the air outlet guide plate 313 and make the air outlet guide plate 313 less prone to deformation.

[0125] In some other possible implementations of this application, the two ends of the air outlet guide plate 313 along the height direction Z of the inner liner 120 can be respectively connected to the top wall and bottom wall of the air outlet 3111 to fix the air outlet guide plate 313 to the air supply plate body 311.

[0126] In some possible implementations of the embodiments of this application, reference is made to Figure 4 There can be multiple second air supply slots 126, which are arranged at intervals along the length X of the cavity sidewall 124. Air from multiple different positions along the length X of the first air supply slot 125 can flow to the multiple second air supply slots 126 respectively, and then flow to different height positions in the storage chamber 1202 through each second air supply slot 126, thereby increasing the coverage of the cold air blown out from the air outlet 3111 along the length X and height Z of the storage chamber 1202, and reducing the temperature difference in the storage chamber 1202 along the length X and height Z.

[0127] In some possible implementations of the embodiments of this application, reference is made to Figure 8 The second air supply duct 126 may include a fourth air supply section 1261, which is connected to the first air supply section 1251. The two ends of the fourth air supply section 1261 along its extension direction may extend to both sides of the first air supply section 1251 respectively.

[0128] refer to Figure 8The second air supply duct 126 may also include a fifth air supply section 1262, which is connected to at least one end of the fourth air supply section 1261 in the extension direction. That is, the top end of the fourth air supply section 1261 may be provided with the fifth air supply section 1262, or the bottom end of the fourth air supply section 1261 may be provided with the fifth air supply section 1262, or both the top end and the bottom end of the fourth air supply section 1261 may be provided with the fifth air supply section 1262.

[0129] refer to Figure 8 The distance between the bottom 1263 of the fifth air supply section 1262 and the opening of the fifth air supply section 1262 decreases from the end closer to the fourth air supply section 1261 to the end farther away from the fourth air supply section 1261. The bottom 1263 of the fifth air supply section 1262 can guide the air blown from the fourth air supply section 1261 into the fifth air supply section 1262, so that the air in the fifth air supply section 1262 can more easily flow along the inclined bottom 1263 of the fifth air supply section 1262 in a direction away from the fourth air supply section 1261, so as to flow out of the fifth air supply section 1262 and into the storage chamber 1202. This reduces the possibility of air stagnation in the fifth air supply section 1262, increases the air flow rate from the second air supply trough 126 to the storage chamber 1202, and thus improves the cooling efficiency of the storage chamber 1202.

[0130] In some possible implementations of the embodiments of this application, reference is made to Figure 3 and Figure 4 The cavity sidewall 124 may also be constructed with a first return air groove 127, which extends along a third direction, forming an angle with the height direction Z of the cavity sidewall 124. The angle between the third direction and the height direction Z of the cavity sidewall 124 can be 90°, that is, the third direction is along the length direction X of the cavity sidewall 124. The angle between the third direction and the height direction Z of the cavity sidewall 124 can also be less than 90°, as long as the projection of the first return air groove 127 on the bottom wall 121 extends along the length direction X of the cavity sidewall 124, thus increasing the coverage area of ​​the first return air groove 127 along the length direction X of the cavity sidewall 124.

[0131] refer to Figure 3 and Figure 4The cavity sidewall 124 can also be constructed with a second return air slot 128, which extends along a fourth direction. This fourth direction forms an angle with the length direction X of the cavity sidewall 124, meaning the angle is greater than 0°. Alternatively, the angle can be 90°, which is the fourth direction along the height direction Z of the cavity sidewall 124. The angle can also be less than 90°, as long as the projection of the second return air slot 128 onto the baffle sidewall 122 extends along the height direction Z of the baffle sidewall 122. This increases the coverage area of ​​the second return air slot 128 along the height direction Z of the cavity sidewall 124.

[0132] The second return air duct 128 is connected to the first return air duct 127. (Reference) Figure 4 The airflow direction indicated by the red arrows is such that the air in the storage chamber 1202, which is opposite to the second return air duct 128, can flow to the second return air duct 128, continue to flow along the second return air duct 128 to the first return air duct 127, and then flow along the first return air duct 127 toward the mounting side wall 123. It then flows from the end of the first return air duct 127 near the mounting side wall 123 to the return air inlet 3221, and from the return air inlet 3221 into the return air cavity 303. The air in the return air cavity 303 exchanges heat with the evaporator 50 and its temperature decreases. It then flows through the air inlet 3112 into the air supply cavity 302, and then through the air outlet 3111 into the storage chamber 1202.

[0133] When there are many items stacked in the storage room 1202, or when the height of the stacked items is higher than the height of the return air vent 3221, the air near the cavity side wall 124 in the storage room 1202 can flow back to the return air vent 3221 through the second return air duct 128 and the first return air duct 127. This allows air at different positions along the length direction X and height direction Z in the storage room 1202 to still flow back to the return air vent 3221, thereby increasing the air circulation rate between the storage room 1202 and the return air cavity 303 and the supply air cavity 302, and thus improving the cooling efficiency of the storage room 1202.

[0134] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The return air vent 3221 can extend along the height direction Z of the inner liner 120 so that a larger area of ​​air in the storage compartment 1202 along the height direction Z can flow into the return air vent 3221, thereby improving the return air efficiency between the storage compartment 1202 and the return air cavity 303 and improving the cooling efficiency of the storage compartment 1202.

[0135] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The first return air duct 127 may include a first return air section 1271, which extends in a third direction.

[0136] refer to Figure 4 The first return air duct 127 may also include a second return air section 1272, which is connected to the end of the first return air section 1271 near the mounting side wall 123. The distance between the bottom 1273 of the second return air section 1272 and the opening of the second return air section 1272 increases from the end away from the first return air section 1271 to the end near the first return air section 1271. The bottom 1273 of the second return air section 1272 can guide the air blown into the second return air section 1272, so that the air in the second return air section 1272 can more easily flow along the inclined bottom 1273 of the second return air section 1272 in a direction away from the first return air section 1271, so as to flow out of the second return air section 1272 and flow to the return air inlet 3221. This reduces the possibility of air stagnation in the second return air section 1272, improves the air circulation rate and return air efficiency from the first return air duct 127 to the return air inlet 3221, and thus improves the cooling efficiency of the storage room 1202.

[0137] In some possible implementations of the embodiments of this application, reference is made to Figure 5 The first return air duct 127 may also include a third return air section 1274, which is connected to the end of the first return air section 1271 away from the mounting side wall 123. The distance between the bottom of the third return air section 1274 and the opening of the third return air section 1274 decreases from the end closer to the first return air section 1271 to the end away from the first return air section 1271. The bottom of the third return air section 1274 can guide the air blown from the first return air section 1271 into the third return air section 1274, allowing the air in the third return air section 1274 to flow more easily along the inclined bottom of the third return air section 1274 in a direction away from the first return air section 1271, so that it can flow out of the third return air section 1274 and into the storage chamber 1202. This reduces the possibility of air stagnation in the third return air section 1274, increases the air circulation rate from the first return air duct 127 to the storage chamber 1202, and thus improves the cooling efficiency of the storage chamber 1202.

[0138] In some possible implementations of the embodiments of this application, reference is made to Figure 4 There can be multiple second return air ducts 128, which are arranged at intervals along the length X of the cavity sidewall 124. Air at different heights in the storage chamber 1202 is collected in the first return air duct 127 through the second return air ducts 128. The air in the multiple second return air ducts 128 can flow to multiple different positions along the length X of the first return air duct 127, and then flow to the return air inlet 3221 through the first return air duct 127, which improves the air circulation rate and return air efficiency between the storage chamber 1202 and the return air cavity 303, and improves the cooling efficiency of the storage chamber 1202.

[0139] In some possible implementations of the embodiments of this application, reference is made to Figure 8 The second return air duct 128 may include a fourth return air section 1281, which extends along a fourth direction and is connected to the first return air section 1271. The two ends of the fourth return air section 1281 along its extension direction may extend to both sides of the first return air section 1271 respectively.

[0140] refer to Figure 8 The second return air duct 128 may also include a fifth return air section 1282, which is connected to at least one end of the fourth return air section 1281 in the extension direction. That is, the top end of the fourth return air section 1281 may be provided with the fifth return air section 1282, or the bottom end of the fourth return air section 1281 may be provided with the fifth return air section 1282, or both the top and bottom ends of the fourth return air section 1281 may be provided with the fifth return air section 1282.

[0141] refer to Figure 8 The distance between the bottom of the fifth return air section 1282 and the opening of the fifth return air section 1282 decreases from the end closer to the fourth return air section 1281 to the end farther away from the fourth return air section 1281. The bottom of the fifth return air section 1282 can guide the air flowing from the storage chamber 1202 to the fifth return air section 1282, making it easier for the air flowing from the storage chamber 1202 to the fifth return air section 1282 to flow to the fourth return air section 1281 along the inclined bottom of the fifth return air section 1282. This reduces the possibility of air stagnation in the fifth return air section 1282, improves the return air efficiency between the storage chamber 1202 and the return air opening 3221, and thus improves the cooling efficiency of the storage chamber 1202.

[0142] In some possible implementations of the embodiments of this application, reference is made to Figure 9 and Figure 10 The return air cover 320 may include a return air plate body 321, and the return air plate body 321 is constructed with a through opening 3211.

[0143] The return air cover 320 may also include a return air baffle 322. The return air baffle 322 is located on the side of the return air plate body 321 facing the storage chamber 1202. The end of the return air baffle 322 away from the cavity side wall 124 is connected to the edge of the through port 3211 away from the cavity side wall 124. The end of the return air baffle 322 near the cavity side wall 124 is spaced apart from the return air plate body 321 and forms a return air inlet 3221. The return air inlet 3221 is connected to the through port 3211. Air flowing from the end of the first return air trough 127 near the mounting side wall 123 to the return air inlet 3221 flows into the return air cavity 303 through the through port 3211.

[0144] The return air vent 3221 faces the cavity side wall 124 so that the air from the end of the first return air duct 127 near the mounting side wall 123 can more easily flow to the return air vent 3221.

[0145] In some possible implementations of the embodiments of this application, reference is made to Figure 10 The return air cover 320 may also include multiple supporting stiffeners 323, which are spaced Z-spaced along the height direction of the inner liner 120 on the side of the return air baffle 322 away from the storage chamber 1202. The supporting stiffeners 323 can support the return air baffle 322 to improve the structural strength of the return air baffle 322.

[0146] In addition, the support ribs 323 can also divide the air flowing in from the return air inlet into multiple airflows flowing into the return air cavity 303, thereby reducing the concentration of air flowing into the return air cavity 303 at local locations, improving the uniformity of the air flowing from the return air inlet 3221 to the return air cavity 303, so that the air can exchange heat with the evaporator 50 more fully, and improving the cooling efficiency of the storage compartment 1202.

[0147] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The bottom end of the return air plate body 321 can be spaced apart from the first wall 1231 to form a return air gap 3212. The return air gap 3212 is connected to the storage chamber 1202 and the return air cavity 303 respectively. The air at the bottom of the storage chamber 1202 can flow back to the return air cavity 303 through the return air gap 3212.

[0148] The return air plate body 321 and the return air inlet 3221 are partially spaced apart from the first wall 1231, and the other part of the return air plate body 321 and the return air inlet 3221 are partially spaced apart from the second wall 1232, so that some air at the return air inlet 3221 can more easily flow to the return air cavity 303 and the evaporator 50.

[0149] In some possible implementations of the embodiments of this application, the first air supply groove 125 and the second air supply groove 126 may be disposed on at least one of the two opposing cavity sidewalls 124.

[0150] refer to Figure 3 Each of the two opposing cavity sidewalls 124 can be provided with a first air supply groove 125 and a second air supply groove 126. The air duct assembly 30 can be constructed with two air outlets 3111. The two air outlets 3111 respectively discharge air to the first air supply groove 125 at the corresponding cavity sidewall 124, so that the two air outlets 3111 respectively discharge air to the first air supply groove 125 at the corresponding cavity sidewall 124, thereby reducing the temperature difference in the storage chamber 1202 along the width direction Y of the inner liner 120.

[0151] In some possible implementations of the embodiments of this application, reference is made to Figure 6 The air supply cover 310 may also be configured with a first auxiliary air outlet 3113, which may be located on the side of the air outlet 3111 away from the cavity sidewall 124. In the implementation of the air supply cover 310 having two air outlets 3111, the first auxiliary air outlet 3113 may be located between the two air outlets 3111.

[0152] The first auxiliary air vent 3113 is connected to the storage chamber 1202 and the air supply cavity 302 respectively, so as to transport the air in the air supply cavity 302 to the storage chamber 1202 corresponding to the side of the air outlet 3111 away from the cavity side wall 124, so as to reduce the temperature difference in the storage chamber 1202 along the width direction Y of the inner liner 120.

[0153] In some possible implementations of the embodiments of this application, the first return air duct 127 and the second return air duct 128 may be disposed on at least one of the two opposing cavity sidewalls 124.

[0154] refer to Figure 3 Each of the two opposing cavity sidewalls 124 can be provided with a first return air slot 127 and a second return air slot 128. The air duct assembly 30 can be constructed with two return air inlets 3221. The air in the first return air slot 127 of the two opposing cavity sidewalls 124 flows back to the air cavity 301 through the corresponding return air inlets 3221, which improves the flow rate between the air in the storage chamber 1202 and the air cavity 301, and improves the cooling effect of the storage chamber 1202.

[0155] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The return air cover 320 may also be configured with a second auxiliary air vent 3213, which may be located on the side of the return air vent 3221 away from the cavity sidewall 124. In the implementation of the return air cover 320 having two return air vents 3221, the second auxiliary air vent 3213 may be located between the two return air vents 3221.

[0156] The second auxiliary air vent 3213 can be connected to the storage chamber 1202 and the return air cavity 303 respectively, so that the air in the storage chamber 1202 located on the side of the return air vent 3221 away from the cavity side wall 124 can flow back to the return air cavity 303 through the second auxiliary air vent 3213, thereby increasing the air flow rate between the storage chamber 1202 and the air cavity 301 and improving the cooling effect of the storage chamber 1202.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0158] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the above embodiments and various different variations of embodiments suitable for specific application considerations.

Claims

1. A refrigerator characterized by, include: The inner liner (120) is constructed to form a cavity; the inner liner (120) includes adjacent mounting sidewalls (123) and cavity sidewalls (124). A duct assembly (30) is disposed on the mounting sidewall (123); the duct assembly (30) is used to form a duct cavity (301); the duct assembly (30) and the inner liner (120) enclose a storage chamber (1202); the duct assembly (30) has an air outlet (3111) on the side facing the storage chamber (1202), and the air outlet (3111) is connected to the storage chamber (1202) and the duct cavity (301) respectively; The cavity sidewall (124) is constructed as follows: A first air supply groove (125) extends along a first direction, the first direction forming an angle with the height direction of the cavity sidewall (124); the first air supply groove (125) includes: First air supply section (1251); The second air supply section (1252) is connected to the end of the first air supply section (1251) near the mounting side wall (123). The distance between the bottom (1253) of the groove of the second air supply section (1252) and the opening of the groove of the second air supply section (1252) increases from the end away from the first air supply section (1251) to the end near the first air supply section (1251). The second air supply groove (126) extends along a second direction, which forms an angle with the length direction of the cavity sidewall (124); the second air supply groove (126) is connected to the first air supply section (1251); The air outlet (3111) is configured to discharge air toward the second air supply section (1252).

2. The refrigerator according to claim 1, characterized in that The first air supply trough (125) further includes a third air supply section (1254), which is connected to the end of the first air supply section (1251) away from the mounting sidewall (123). The distance between the bottom of the third air supply section (1254) and the opening of the third air supply section (1254) decreases from the end closer to the first air supply section (1251) to the end away from the first air supply section (1251).

3. The refrigerator according to claim 1, wherein The air duct assembly (30) includes an air supply cover (310), the air supply cover (310) comprising: The air supply panel body (311) is configured with the air outlet (3111). An air supply baffle (312) is disposed on the side of the air supply baffle body (311) facing the storage chamber (1202) and on the side of the air outlet (3111) away from the cavity sidewall (124).

4. The refrigerator according to claim 1, wherein An air outlet (3111) is provided with an air outlet guide plate (313), and the end of the air outlet guide plate (313) closer to the storage chamber (1202) is inclined toward the cavity sidewall (124) compared with the end farther away from the storage chamber (1202).

5. The refrigerator according to any one of claims 1 to 4, characterized in that There are multiple second air supply slots (126), and the multiple second air supply slots (126) are arranged at intervals along the length direction of the cavity sidewall (124).

6. The refrigerator according to any one of claims 1 to 4, wherein The second air supply duct (126) includes: The fourth air supply section (1261) is connected to the first air supply section (1251); The fifth air supply section (1262) is connected to at least one end of the fourth air supply section (1261) in the extension direction. The distance between the bottom (1263) of the fifth air supply section (1262) and the opening of the fifth air supply section (1262) decreases from the end closer to the fourth air supply section (1261) to the end farther away from the fourth air supply section (1261).

7. The refrigerator according to any one of claims 1 to 4, wherein The air duct assembly (30) facing the storage chamber (1202) is also provided with a return air inlet (3221), which is connected to the storage chamber (1202) and the air cavity (301) respectively; The cavity sidewall (124) is also constructed with: The first return air duct (127) extends along a third direction, and the third direction forms an angle with the height direction of the cavity sidewall (124); The second return air duct (128) extends along a fourth direction, which forms an angle with the length direction of the cavity sidewall (124); the second return air duct (128) communicates with the first return air duct (127); The return air inlet (3221) faces the end of the first return air duct (127) near the mounting sidewall (123).

8. The refrigerator according to claim 7, characterized in that The first return air duct (127) includes: The first return air section (1271) extends along the third direction; The second return air section (1272) is connected to the end of the first return air section (1271) near the mounting side wall (123). The distance between the bottom (1273) of the second return air section (1272) and the opening of the second return air section (1272) increases from the end away from the first return air section (1271) to the end near the first return air section (1271).

9. The cabinet according to claim 8, wherein, The second return air duct (128) includes: The fourth return air section (1281) is connected to the first return air section (1271); The fifth return air section (1282) is connected to at least one end of the fourth return air section (1281) in the direction of extension. The distance between the bottom of the fifth return air section (1282) and the opening of the fifth return air section (1282) decreases from the end closer to the fourth return air section (1281) to the end farther away from the fourth return air section (1281).

10. The refrigerator according to claim 7, wherein The air duct assembly (30) includes a return air cover (320) having the return air inlet (3221). The return air cover (320) includes: The return air panel body (321) has a through opening (3211). A return air baffle (322) is located on the side of the return air baffle body (321) facing the storage chamber (1202), and the end of the return air baffle (322) away from the cavity sidewall (124) is connected to the edge of the through opening (3211) away from the cavity sidewall (124). The end of the return air baffle (322) near the cavity sidewall (124) is spaced apart from the return air baffle body (321) and forms the return air inlet (3221), which is connected to the through opening (3211).

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