Refrigerator

Abstract

The application relates to the technical field of refrigeration equipment, in particular to a refrigerator. The refrigerator of the application is provided with a first air duct component in a temperature-variable tank, the first air duct component forms a first air supply duct and a first air return duct, the first air supply duct is used for air supply towards a refrigeration chamber, and the first air return duct is used for air return of the refrigeration chamber. The first air supply duct and the first air return duct are located inside the temperature-variable tank, the air ducts are designed to be flattened along the width direction of the temperature-variable tank, the occupied space of the first air duct component in the depth direction of the refrigerator is reduced, and the volume of the temperature-variable chamber is increased. Moreover, the first air duct component is located in the temperature-variable tank, a foamed heat preservation layer does not need to be reserved on the rear side of the temperature-variable tank, the foamed heat preservation layer can be thin, and the volume of the temperature-variable chamber is further increased.

Description

Technical Field

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

[0002] Refrigerators, as devices for storing items at low temperatures, typically have multiple storage compartments with different storage temperatures. For example, some refrigerators have a refrigerator compartment, a freezer compartment, and a variable temperature compartment. The refrigerator compartment is kept above freezing for refrigerating items; the freezer compartment is kept below freezing for freezing items; and the variable temperature compartment can be adjusted according to storage needs.

[0003] In related technologies, the evaporator is usually located in the freezer compartment, supplying cold air to the refrigerator compartment and the variable temperature compartment respectively. The refrigerator's insulation layer has an air supply duct to deliver air to the refrigerator compartment; and a return air duct is provided to allow air from the refrigerator compartment to return to the chamber where the evaporator is located.

[0004] Because the air supply and return ducts of the refrigerator compartment need to cross the back of the variable temperature compartment, the foam layer at the back of the variable temperature compartment is relatively thick, which reduces the volume of the variable temperature compartment and thus affects the volume of the refrigerator. Utility Model Content

[0005] This application provides a refrigerator that helps to increase the volume ratio of the variable temperature compartment.

[0006] In a first aspect, embodiments of this application provide a refrigerator, which includes:

[0007] A refrigerator liner, wherein a refrigerator compartment is provided inside the refrigerator liner;

[0008] A variable temperature chamber liner, wherein a variable temperature temperature compartment is provided inside the variable temperature chamber liner; the variable temperature chamber liner is located below the refrigerator liner;

[0009] The freezer liner is provided with an evaporation chamber for installing an evaporator and a freezing chamber, and the freezer liner is located below the variable temperature chamber liner;

[0010] A first connecting component is disposed between the freezer chamber and the variable temperature chamber; the first connecting component is configured to form a first cooling channel and a first reflux channel, which are respectively connected to the evaporation chamber;

[0011] The second connecting component is disposed between the variable temperature chamber and the refrigerator chamber; the second connecting component is configured to form a second cooling channel and a second return channel, the second cooling channel and the second return channel being respectively connected to the refrigerator compartment;

[0012] A first air duct component is disposed inside the temperature-controlled chamber, and the first air duct component is used to form:

[0013] The first air supply duct connects the first cooling channel and the second cooling channel, so that the cold air from the evaporation chamber passes through the first cooling channel, the first air supply duct and the second cooling channel and enters the cold storage room;

[0014] The first return air duct connects the first return channel and the second return channel, so that the return air of the refrigerator compartment can return to the evaporation chamber through the second return channel, the first return air duct and the first return channel.

[0015] The refrigerator of this embodiment has a first air duct component inside the variable temperature compartment. The first air duct component forms a first supply air duct and a first return air duct. The bottom end of the first supply air duct is connected to the evaporator chamber via a first cooling channel of a first connecting component, and the top end of the first supply air duct is connected to the refrigerator compartment via a second cooling channel of a second connecting component. This allows cold air from the evaporator chamber to rise through the first cooling channel into the first supply air duct, and then enter the refrigerator compartment via the second cooling channel. The bottom end of the first return air duct is connected to the evaporator chamber via a first return channel of the first connecting component, and the top end of the first return air duct is connected to the refrigerator compartment via a second return channel of the second connecting component. This allows air from the refrigerator compartment to enter the first return air duct via the second return channel, and then return to the evaporator chamber where the evaporator is located via the first return channel. This cycle repeats continuously, achieving cooling of the refrigerator compartment.

[0016] The first air supply duct and the first return air duct are located inside the variable temperature chamber, which facilitates the design of a flattened air duct along the width of the chamber. This reduces the space occupied by the first air duct components in the depth direction of the refrigerator, providing a basis for increasing the volume of the variable temperature chamber. Furthermore, since the first air duct components are located inside the variable temperature chamber, there is no need to reserve a large space at the rear of the chamber for the foam insulation layer. This allows the foam insulation layer to be made thinner, further facilitating an increase in the volume of the variable temperature chamber.

[0017] Secondly, embodiments of this application provide a refrigerator, comprising:

[0018] The first box liner, the first box liner is provided with a first compartment;

[0019] The second box liner, which contains a second compartment;

[0020] The third compartment contains a third chamber; the third compartment, the second compartment, and the first compartment are arranged sequentially along the height of the refrigerator; the third compartment contains an evaporator.

[0021] A first air duct component is disposed inside the second housing, and the first air duct component is used to construct:

[0022] The first air supply duct has one end connected to the chamber where the evaporator is located and the other end connected to the first compartment, so that the cold air passing through the evaporator can enter the first compartment through the first air supply duct.

[0023] The first return air duct has one end connected to the chamber where the evaporator is located, and the other end connected to the first compartment, so that the return air from the first compartment can return to the chamber where the evaporator is located through the first return air duct.

[0024] The refrigerator in this embodiment has three compartments: a first compartment, a second compartment, and a third compartment. An evaporator is installed in the third compartment to cool the three compartments. A first air duct component is installed in the second compartment. This component forms a first supply air duct and a first return air duct. The first supply air duct allows cold air from the evaporator compartment to enter the first compartment, and the first return air duct allows airflow from the first compartment to return to the evaporator compartment, thus cooling the first compartment. This arrangement allows the first return air duct and the first supply air duct to be flattened along the width of the refrigerator, reducing the thickness of the insulation layer behind the second compartment and thus increasing the effective volume of the second compartment. It also reduces the space occupied by the first air duct component in the depth direction of the refrigerator. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the refrigerator cabinet structure according to some embodiments of this application;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of a refrigerator after the outer shell has been removed;

[0027] Figure 3 for Figure 1 Rear view of the refrigerator after removing the outer shell and the inner linings of each compartment;

[0028] Figure 4 A front view of the variable temperature chamber, internal air duct components, and connecting components provided in an embodiment of this application;

[0029] Figure 5 for Figure 4 AA section view in the middle;

[0030] Figure 6 for Figure 4 BB section view;

[0031] Figure 7 for Figure 4 CC section view in the middle;

[0032] Figure 8 for Figure 4DD section view in the middle;

[0033] Figure 9 for Figure 2 An exploded diagram of the middle structure;

[0034] Figure 10 for Figure 2 Another exploded diagram of the middle structure;

[0035] Figure 11 A front view of the refrigerator liner, internal air duct components, and connecting components provided in an embodiment of this application;

[0036] Figure 12 for Figure 11 EE section view;

[0037] Figure 13 for Figure 11 FF section view;

[0038] Figure 14 A front view of the freezer liner, internal air duct components, and connecting components provided in an embodiment of this application;

[0039] Figure 15 for Figure 14 GG sectional view in the middle;

[0040] Figure 16 for Figure 14 Exploded view of the structure. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] This application provides a refrigerator comprising at least three cabinets arranged along the height of the refrigerator, each cabinet having a compartment, one of which contains an evaporator that extends across the middle cabinet to cool the compartment of another cabinet.

[0044] The supply and return air ducts for cooling the other compartment are located inside the middle compartment, allowing for a flatter design that reduces the space occupied by the ducts in the depth direction of the refrigerator, thus increasing the volume of the middle compartment.

[0045] This application embodiment is applied to a refrigerator with a multi-layered liner. The air duct system passing through the middle compartment is transformed from a traditional independent pipe inside the insulation layer into a flat air duct structure integrated inside the middle compartment liner. This effectively reduces the thickness of the insulation layer at the rear of the middle compartment, thereby increasing its effective volume.

[0046] In some possible implementations, the refrigerator includes a first inner liner, a second inner liner, and a third inner liner. The first inner liner contains a first compartment; the second inner liner contains a second compartment; and the third inner liner contains a third compartment. The third inner liner, the second inner liner, and the first inner liner are arranged sequentially along the height of the refrigerator.

[0047] The first compartment can be a refrigerator, the second compartment can be a variable temperature compartment, a fresh food compartment, an ice-making compartment, etc., and the third compartment can be a freezer. Of course, the storage temperature of the first, second, and third compartments is not limited to these.

[0048] In this embodiment, an evaporator is installed inside the third compartment for heat exchange with air to achieve refrigeration. The refrigerator is also equipped with an air duct structure to deliver the cold air after heat exchange with the evaporator to the first, second, and third compartments.

[0049] The refrigerator in this embodiment may further include a first air duct component, which is disposed inside the second liner and is used to supply and return air to the first compartment of the first liner.

[0050] The first air duct component is used to construct a first air supply duct, one end of which connects to the chamber where the evaporator is located, and the other end of which connects to a first compartment, so that cold air passing through the evaporator can enter the first compartment through the first air supply duct. The first air supply duct can be indirectly connected to the chamber where the evaporator is located via other air ducts, channels, or cavities, and can also be indirectly connected to the first compartment, thereby allowing cold air from the chamber where the evaporator is located to enter the first compartment through the first air supply duct to lower the temperature of the first compartment.

[0051] The first air duct component can be constructed to form a first air supply duct. For example, the first air duct component includes two foam boards, which enclose the first air supply duct. Alternatively, the first air duct component can also be enclosed together with the second box liner to form the first air supply duct.

[0052] The first air duct component also forms a first return air duct. One end of the first return air duct connects to the chamber where the evaporator is located, and the other end connects to the first compartment, allowing the return air from the first compartment to return to the chamber where the evaporator is located through the first return air duct. The first return air duct can be indirectly connected to the first compartment through other air ducts, channels, or cavities, thereby allowing the airflow from the first compartment to return to the chamber where the evaporator is located through the first return air duct.

[0053] The first air duct component can be constructed to form a first return air duct. For example, the first air duct component includes two foam boards, which enclose the first return air duct. Alternatively, the first air duct component can also be combined with the second box liner to form the first return air duct.

[0054] Therefore, the refrigerator in this embodiment of the application has three compartments: a first compartment, a second compartment, and a third compartment. An evaporator is installed in the third compartment to cool the three compartments. A first air duct component is installed in the second compartment. This first air duct component forms a first supply air duct and a first return air duct. The first supply air duct allows cold air from the evaporator's chamber to enter the first compartment, and the first return air duct allows airflow from the first compartment to return to the evaporator's chamber, thus cooling the first compartment.

[0055] This design allows the first return air duct and the first supply air duct to be flattened along the width of the refrigerator, which helps to reduce the thickness of the insulation layer behind the second compartment, thereby increasing the effective volume of the second compartment; it also reduces the space occupied by the first air duct components in the depth direction of the refrigerator.

[0056] The structure and function of the embodiments of this application are described in detail below with reference to the accompanying drawings. Wherein, the width direction of the refrigerator or refrigerator liner corresponds to... Figure 1 The X-axis direction; the depth direction of the refrigerator or refrigerator liner, corresponding to... Figure 1 The Y-axis direction; the height direction of the refrigerator or refrigerator liner, corresponding to... Figure 1 In the Z-axis direction.

[0057] like Figure 1 As shown, the refrigerator of this embodiment includes a refrigerator compartment 120, a variable temperature compartment 130, and a freezer compartment 140. The refrigerator compartment 120 contains a refrigerator compartment 121; the variable temperature compartment 130 contains a variable temperature compartment 131 and is located below the refrigerator compartment 120; the freezer compartment 140 contains a freezer compartment 141 and is located below the variable temperature compartment 130. The freezer compartment 140 also contains an evaporation chamber to house the evaporator.

[0058] This application describes an embodiment with the first compartment being a refrigerator compartment 120, the second compartment being a variable temperature compartment 130, and the third compartment being a freezer compartment 140 as an example.

[0059] Continue to refer to Figure 1 The refrigerator in this embodiment may further include a shell 110, which is connected to the outside of all the inner linings to form the appearance of the refrigerator. A foamed insulation layer is provided between the shell 110 and the inner linings to insulate each compartment. Foamed insulation layers are provided on the rear side and both sides in the width direction of the refrigerator compartment 121, on the rear side and both sides in the width direction of the variable temperature compartment 131, and on the rear side and both sides in the width direction of the freezer compartment 141.

[0060] Reference Figure 2 and Figure 3 The refrigerator in this embodiment further includes a first connecting component 200, which is disposed between the freezer compartment 140 and the variable temperature compartment 130. The first connecting component 200 can be snapped onto or glued to the freezer compartment 140. The first connecting component 200 can also be snapped onto or glued to the variable temperature compartment 130. At least a portion of the first connecting component 200 is located within the gap between the freezer compartment 140 and the variable temperature compartment 130, which helps to reduce the space occupied by the first connecting component 200 in the depth direction.

[0061] The first connecting component 200 is configured to form a first cooling channel 210 and a first return channel 220. The first cooling channel 210 and the first return channel 220 are respectively connected to the evaporation chamber. The first cooling channel 210 is used to output cold air from the evaporation chamber, and the first return channel 220 is used to return the airflow to the evaporation chamber for heat exchange. The first cooling channel 210 is usually located at the top of the evaporation chamber, and the first return channel 220 is usually located at the bottom of the evaporation chamber.

[0062] In this embodiment, the first cooling channel 210 and the first reflux channel 220 are indirectly connected to the evaporation chamber through other channels or chambers.

[0063] In this embodiment, the first connecting component 200 can be formed by connecting two plates to form channels, thus simplifying and facilitating the injection molding of each plate. Alternatively, the first connecting component 200 can be a single, integrally molded part, which helps ensure the sealing of each channel.

[0064] Continue to refer to Figure 2 and Figure 3The refrigerator in this embodiment may further include a second connecting member 300, which is disposed between the variable temperature compartment 130 and the refrigerator compartment 120. The second connecting member 300 can be snapped onto or glued to the variable temperature compartment 130. At least a portion of the second connecting member 300 is located within the gap between the refrigerator compartment 120 and the variable temperature compartment 130, which helps to reduce the space occupied by the second connecting member 300 in the depth direction.

[0065] The second connecting component 300 forms a second cooling channel 310 and a second return channel 320, which are respectively connected to the refrigerator compartment 121. The second cooling channel 310 is used to supply cold air towards the refrigerator compartment 121, and the second return channel 320 is used to output the airflow from the refrigerator compartment 121. The connection point between the second cooling channel 310 and the refrigerator compartment 121 is located above the connection point between the second return channel 320 and the refrigerator compartment 121.

[0066] The second cooling channel 310 can be directly connected to the refrigerator compartment 121, or indirectly connected to the refrigerator compartment 121 through other channels or chambers.

[0067] The second return channel 320 can be directly connected to the refrigerator compartment 121, or indirectly connected to the refrigerator compartment 121 through other channels or chambers.

[0068] In this embodiment, the second connecting component 300 can be formed by connecting two plates to create channels, thus simplifying and facilitating injection molding of each plate. Alternatively, the second connecting component 300 can be a single, integrally molded part, which helps ensure the sealing of each channel.

[0069] Combination Figure 4 and Figure 5 In this embodiment of the application, the first air duct component 400 is disposed inside the temperature chamber 130. The first air duct component 400 is disposed near the rear wall of the temperature chamber 130, and the front side of the first air duct component 400 forms the temperature chamber 131.

[0070] like Figure 5 As shown, the first air duct component 400 is used to construct a first air supply duct 410, which connects to the first cooling channel 210 and the second cooling channel 310, so that the cold air from the evaporator chamber passes through the first cooling channel 210, the first air supply duct 410, and the second cooling channel 310 to enter the refrigerator compartment 121. Thus, the cold air from the evaporator chamber located in the freezer liner 140 rises through the first cooling channel 210 into the first air supply duct 410, and then enters the refrigerator compartment 121 via the second cooling channel 310.

[0071] Reference Figure 6 The first air duct component 400 is also used to construct a first return air duct 420, which connects the first return channel 220 and the second return channel 320, so that the return air from the refrigerator compartment 121 passes through the second return channel 320, the first return air duct 420, and the first return channel 220 to return to the evaporator chamber. In this way, the air in the refrigerator compartment 121 enters the first return air duct 420 through the second return channel 320 and returns to the evaporator chamber where the evaporator is located via the first return channel 220.

[0072] Therefore, continue to refer to Figure 3 The cold air in the evaporation chamber is transported to the refrigerator compartment 121 through the first cooling channel 210, the first air supply channel 410 and the second cooling channel 310, as shown in the blue lines; the air in the refrigerator compartment 121 returns to the evaporation chamber through the second return channel 320, the first return air channel 420 and the first return channel 220 to exchange heat with the evaporator, as shown in the red lines.

[0073] In some embodiments of this application, the first return air duct 420 and the first supply air duct 410 are arranged side by side along the width direction of the temperature-controlled chamber 130. This allows the first supply air duct 410 and the first return air duct 420 to be staggered along the width direction of the temperature-controlled chamber 130, facilitating the formation of a flat and wide air duct shape, saving space in the depth direction, and helping to increase the depth space of the temperature-controlled chamber 131. Furthermore, the first supply air duct 410 contains cold air, while the first return air duct 420 contains relatively warm recirculated air; separating the two reduces heat exchange.

[0074] The first return air duct 420 and the first supply air duct 410 are arranged side by side along the width direction, which provides sufficient space for the width arrangement of the first return air duct 420 and the first supply air duct 410. In particular, for the variable temperature chamber 131 with a wide range of temperature, it is relatively easy to meet the requirements of large cross-sectional area by adjusting the dimensions of the first return air duct 420 and the first supply air duct 410 in the width direction, thereby meeting the demand for large air volume.

[0075] Therefore, in the refrigerator of this embodiment, a first air duct component 400 is provided in the variable temperature chamber 130. The first air duct component 400 forms a first air supply duct 410 and a first air return duct 420. The bottom end of the first air supply duct 410 is connected to the evaporation chamber through the first cooling channel 210 of the first connecting component 200, and the top end of the first air supply duct 410 is connected to the refrigerator compartment 121 through the second cooling channel 310 of the second connecting component 300, so that the cold air in the evaporation chamber enters the first air supply duct 410 through the first cooling channel 210, and then enters the refrigerator compartment 121 through the second cooling channel 310. The bottom end of the first return air duct 420 is connected to the evaporator chamber via the first return channel 220 of the first connecting component 200, and the top end of the first return channel is connected to the refrigerator compartment 121 via the second return channel 320 of the second connecting component 300. This allows air from the refrigerator compartment 121 to enter the first return air duct 420 through the second return channel 320 and return to the evaporator chamber via the first return channel 220. This cycle repeats continuously, achieving cooling of the refrigerator compartment 121.

[0076] The first air supply duct 410 and the first return air duct 420 are located inside the variable temperature chamber 130, which facilitates the design of a flattened air duct along the width of the variable temperature chamber 130, reducing the space occupied by the first air duct component 400 in the depth direction of the refrigerator and providing a basis for increasing the volume of the variable temperature chamber 131. Moreover, since the first air duct component 400 is located inside the variable temperature chamber 130, there is no need to reserve a large space on the rear side of the variable temperature chamber 130 for the foam insulation layer, allowing the foam insulation layer to be made thinner, which further facilitates increasing the volume of the variable temperature chamber 131.

[0077] Furthermore, embedding the first air duct component 400 inside the variable temperature chamber liner 130 can reduce the assembly process of setting independent pipes in the foam insulation layer and improve production efficiency. On the other hand, it can improve the convenience of installation and maintenance of the first air duct component 400 and improve the reliability of the refrigerator structure.

[0078] For the variable temperature chamber 131 with a wide range of temperature, a larger air volume is required to regulate the temperature. The flat design of the first air supply duct 410 and the first return air duct 420 can reduce the space occupied in the depth direction while providing sufficient cross-sectional area to meet the large air volume requirements.

[0079] In some embodiments of this application, reference is made to Figure 7 The first air duct component 400 is also used to construct a second air supply duct 430, one end of which is connected to the variable temperature chamber 131 to allow cold air to enter the variable temperature chamber 131.

[0080] The first air duct component 400 has a first air outlet 431 on the side facing the variable temperature chamber 131, and one end of the second air duct 430 is connected to the variable temperature chamber 131 through the first air outlet 431.

[0081] Reference Figure 8 The first air duct component 400 is also used to construct a second return air duct 440, one end of which is connected to the variable temperature chamber 131, and the other end of which is connected to the evaporation chamber.

[0082] The first air duct component 400 is provided with a first return air inlet 441 on the side facing the variable temperature chamber 131, and one end of the second return air duct 440 is connected to the variable temperature chamber 131 through the first return air inlet 441.

[0083] Reference Figure 4 The first air supply vent 431 of the variable temperature chamber 131 is located above the first return air vent 441, so that the cold air enters the variable temperature chamber 131 and sinks, and then enters the second return air duct 440 through the first return air vent 441.

[0084] The other end of the second return air duct 440 is indirectly connected to the evaporation chamber through other channels or chambers, so that the air in the variable temperature chamber 131 can return to the evaporation chamber.

[0085] Continue to refer to Figure 8 The first connecting component 200 also forms a third return channel 240, the top end of which is connected to the second return air duct 440, and the bottom end of which is directly or indirectly connected to the evaporation chamber. Thus, referring to... Figure 3 The return air from the variable temperature chamber 131 enters the second return air duct 440 through the first return air inlet 441, and then returns to the evaporation chamber through the third return channel 240.

[0086] In this embodiment, the first connecting component 200 forms a cooling channel and is connected to the second air supply duct 430, thereby providing cooling for the variable temperature chamber 131.

[0087] In some possible implementations of this application, combined with Figure 7 The bottom end of the second air supply duct 430 is connected to the first cooling channel 210, thereby providing cooling for the variable temperature chamber 131. In this way, the cold air entering the first cooling channel 210 can either enter the second cooling channel 310 through the first air supply duct 410 and finally enter the cold storage chamber 121, or it can enter the variable temperature chamber 131 through the second air supply duct 430 and the first air outlet 431.

[0088] Combination Figure 9 The first cooling channel 210 has a first connecting port 211 and a second connecting port 212. The first connecting port 211 is connected to the first air supply duct 410; the second connecting port 212 is connected to the second air supply duct 430.

[0089] Continue to refer to Figure 9A first partition 230 is provided at the top of the first connecting component 200, which divides the opening at the top of the first cooling channel 210 into a first connecting port 211 and a second connecting port 212.

[0090] Therefore, in this embodiment of the application, the first air duct component 400, in addition to integrating the first air supply duct 410 and the first return air duct 420, also integrates a second air supply duct 430 for supplying air to the variable temperature chamber 131 and a second return air duct 440 for returning air, so that the first air duct component 400 serves both the variable temperature chamber 131 and the cold storage chamber 121, thereby improving the functional integration of the first air duct component 400.

[0091] Therefore, there is no need to install air supply and return ducts for the variable temperature chamber 131 in the insulation foam layer, which helps to further reduce the thickness of the insulation foam layer on the rear side of the variable temperature chamber 130 and save space.

[0092] Moreover, by utilizing the two end connections of the first cooling channel 210, it is connected to the first air supply channel 410 and the second air supply channel 430 respectively, thereby realizing the distribution of cooling capacity. The structure is clear and simple.

[0093] In order to independently adjust the temperature of the variable temperature compartment 131 and the cold storage compartment 121, a first air damper 411 is provided in the first air supply duct 410 and a second air damper 432 is provided in the second air supply duct 430. The first air damper 411 is configured to be selectively opened and closed according to the temperature of the variable temperature compartment 131, and the second air damper 432 is configured to be selectively opened and closed according to the temperature of the cold storage compartment 121, so as to ensure that the temperature of the variable temperature compartment 131 and the cold storage compartment 121 can be independently adjusted.

[0094] Moreover, unlike the dampers which are located inside the insulation foam layer, the first damper 411 and the second damper 432 are both installed inside the first air duct component 400, which is located inside the temperature chamber 130, making it convenient for the dampers to be maintained and repaired.

[0095] Combination Figure 3 In this embodiment of the application, the second air supply duct 430, the second air return duct 440, the first air supply duct 410 and the first air return duct 420 are arranged side by side along the width direction of the temperature chamber 130; the second air supply duct 430 is located on the side of the first air supply duct 410 away from the first air return duct 420, and the second air return duct 440 is located on the side of the first air return duct 420 away from the first air supply duct 410.

[0096] In this embodiment, the second air supply duct 430, the second air return duct 440, the first air supply duct 410, and the first air return duct 420 formed by the first air duct component 400 are arranged side by side along the width direction. This layout facilitates a flattened design and reduces the space occupied by the first air duct component 400 along the depth direction. This arrangement allows the four air ducts to operate independently, avoiding interference, and also results in a regular structure that facilitates molding and demolding.

[0097] Viewed from the rear along the depth direction, the second air supply duct 430, the second return air duct 440, the first air supply duct 410, and the first return air duct 420 are staggered and do not overlap in the depth direction. This helps to reduce the size of the first air duct component 400 along the depth direction and also simplifies the connection method of each air duct, avoiding the structural complexity caused by the intersection of air ducts.

[0098] Furthermore, the first air supply duct 410 and the second air supply duct 430 are arranged close to each other, which facilitates the use of the same first cooling channel 210 for supplying cold air and facilitates port connection; the first return air duct 420 and the second return air duct 440 are arranged close to each other, which facilitates the setting of the return air structure to return air towards the evaporator chamber. Moreover, the first air supply duct 410 and the first return air duct 420 are adjacent to each other, which facilitates simultaneous connection with the channel of the second connecting component 300, realizing the connection with the refrigerator compartment 121.

[0099] In this embodiment, the four channels of the first air duct component 400 are arranged in a reasonable manner, which helps to simplify the connection of each port and thus helps to reduce wind resistance.

[0100] Continue to refer to Figure 7 In some embodiments of this application, the first air duct component 400 includes a first air duct plate 450, which is attached to the rear wall of the temperature chamber liner 130.

[0101] The first air duct component 400 may further include a second air duct plate 460, which is located in front of the first air duct plate 450, and the second air duct plate 460 and the first air duct plate 450 enclose each other to form a first air supply duct 410, a second air supply duct 430 and a first return air duct 420.

[0102] The first air duct plate 450 and the second air duct plate 460 can be foam boards, which have both heat insulation properties and are easy to mold to form air ducts.

[0103] The first air duct component 400 may also include an air duct cover plate 470, which is fixed to the front side of the second air duct plate 460. The air duct cover plate 470 is attached to the front side of the second air duct plate 460, which can provide support for the second air duct plate 460 and protect the second air duct plate 460 and the first air duct plate 450.

[0104] The duct cover 470 forms the rear appearance of the variable temperature chamber 131. The duct cover 470 can be made of plastic to facilitate the formation of a relatively integrated appearance of the variable temperature chamber 131 with the variable temperature chamber liner 130.

[0105] like Figure 7 As shown, the second air duct plate 460 and the air duct cover plate 470 together form an opening to form the first air outlet 431. Moreover, the air duct cover plate 470 can also form an air supply structure such as a grille to limit the air supply direction.

[0106] In some embodiments of this application, the dimensions of the first air duct plate 450 and the second air duct plate 460 in the width direction are smaller than the dimensions of the air duct cover plate 470 in the width direction, such that a portion of the air duct cover plate 470 is directly opposite the rear wall of the temperature chamber liner 130, thereby creating a gap between the air duct cover plate 470 and the rear wall of the temperature chamber liner 130, forming a second return air duct 440. Furthermore, this portion of the air duct cover plate 470 is provided with a first return air inlet 441.

[0107] Therefore, in this embodiment of the application, the first air duct component 400 is formed by the first air duct plate 450 and the second air duct plate 460 to form a first air supply duct 410 and a first return air duct 420. The two air duct plates are used to ensure the heat preservation effect of the three air ducts and reduce the heat exchange between the three air ducts and the variable temperature chamber 131.

[0108] Furthermore, the first air duct plate 450 and the second air duct plate 460 enclose and form the first air supply duct 410 and the second air supply duct 430, which facilitates the installation of the air damper. The formed second air supply duct 430 facilitates the delivery of cold air to the top of the variable temperature chamber 131, and then outputs it towards the variable temperature chamber 131.

[0109] The second return air duct 440 is formed by directly enclosing the air duct cover 470 and the variable temperature chamber liner 130, which is simple in structure and maximizes the use of space. Moreover, the large gap between the air duct cover 470 and the rear wall of the variable temperature chamber liner 130 facilitates the installation of sterilization structures, etc.

[0110] Since the first air duct component 400 is located inside the temperature chamber 130, the first air supply duct 410, the first air return duct 420, the second air supply duct 430 and the second air return duct 440 are all located inside the temperature chamber 130, while the first connecting component 200 and the second connecting component 300 are located outside the temperature chamber 130, the temperature chamber 130 is provided with a connection port in order to achieve connection.

[0111] Combination Figure 10The variable temperature chamber 130 is provided with four connection ports, namely the first connection port 132, the second connection port 133, the third connection port 134 and the fourth connection port 135. The first connection port 132 is connected to the first air supply duct 410, the second connection port 133 is connected to the first return air duct 420, the third connection port 134 is connected to the second air supply duct 430, and the fourth connection port 135 is connected to the second return air duct 440.

[0112] Combination Figure 9 The top of the first cooling channel 210 forms a first connecting port 211 and a second connecting port 212. When the first connecting component 200 is connected to the temperature box 130, the first connecting port 211 is opposite to the first connecting port 132, thereby connecting the first air supply duct 410 with the first cooling channel 210. The second connecting port 212 is opposite to the third connecting port 134, thereby connecting the second air supply duct 430 with the first cooling channel 210.

[0113] Continue to refer to Figure 9 and Figure 10 The top of the first connecting component 200 also forms a third connecting port 221 and a fourth connecting port 241. The third connecting port 221 communicates with the top of the first return channel 220, and the fourth connecting port 241 communicates with the top of the third return channel 240. When the first connecting component 200 is connected to the temperature chamber 130, the third connecting port 221 is opposite to the second connecting port 133, so that the first return air duct 420 is connected to the first return channel 220; the fourth connecting port 241 is opposite to the fourth connecting port 135, so that the second return air duct 440 is connected to the third return channel 240.

[0114] like Figure 9 and Figure 10 As shown, the variable temperature chamber 130 is also provided with a fifth connection port 136 and a sixth connection port 137. The fifth connection port 136 is connected to the top of the first air supply duct 410, and the sixth connection port 137 is connected to the top of the first return air duct 420.

[0115] The top of the second connecting component 300 is provided with a fifth connecting port 311 and a sixth connecting port 321. The fifth connecting port 311 is connected to the bottom end of the second cooling channel 310, and the sixth connecting port 321 is connected to the bottom end of the second return channel 320.

[0116] When the second connecting component 300 is connected to the temperature chamber 130, the fifth connecting port 136 is opposite to the fifth connecting port 311, thereby connecting the first air supply duct 410 with the second cooling channel 310; the sixth connecting port 137 is opposite to the sixth connecting port 321, thereby connecting the first return air duct 420 with the second return channel 320.

[0117] Continue to refer to Figure 9 and Figure 10 The refrigerator liner 120 is provided with a seventh connection port 122 and an eighth connection port 123. The seventh connection port 122 is connected to the air supply duct of the refrigerator compartment 121, and the eighth connection port 123 is connected to the air return duct of the refrigerator compartment 121.

[0118] The top of the second connecting component 300 is provided with a seventh connecting port 312 and an eighth connecting port. The seventh connecting port 312 is connected to the top of the second cooling channel 310, and the eighth connecting port 322 is connected to the top of the second return channel 320.

[0119] When the second connecting component 300 is connected to the refrigerator liner 120, the seventh connecting port 122 is opposite to the seventh connecting port 312, thereby connecting the second cooling channel 310 to the air supply duct of the refrigerator compartment 121; the eighth connecting port 123 is opposite to the eighth connecting port 322, thereby connecting the second return channel 320 to the return air duct of the refrigerator compartment 121.

[0120] The air duct structure inside the refrigerator liner 120 in the embodiments of this application is described below with reference to the accompanying drawings.

[0121] Combination Figure 11 and Figure 12 The refrigerator also includes a second air duct component 500, which is disposed inside the refrigerator compartment 120. The front side of the second air duct component 500 forms the refrigerator compartment 121.

[0122] Combination Figure 13 The second air duct component 500 is used to form a third air duct 510, which is connected to the refrigerator compartment 121, and the bottom end of the third air duct 510 is connected to the top end of the second cooling channel 310.

[0123] The second air duct component 500 can be independently constructed to form the third air duct 510, or the second air duct component 500 and the refrigerator liner 120 can be combined to form the third air duct 510.

[0124] The second air duct component 500 is also used to form a third return air duct 520, which is connected to the refrigerator compartment 121 and the second return channel 320 respectively.

[0125] The second air duct component 500 can be independently constructed to form the third return air duct 520, or the second air duct component 500 and the refrigerator liner 120 can be combined to form the third return air duct 520.

[0126] In this embodiment, the second air duct component 500 and the refrigerator liner 120 together form the third air supply duct 510 and the third air return duct 520.

[0127] In some embodiments, the second air duct component 500 includes a third air duct plate 530 and a front cover plate 540. The third air duct plate 530 is disposed near the rear wall of the refrigerator compartment 120, and there is a gap between the third air duct plate 530 and the rear wall of the refrigerator compartment 120 to form a third air duct 510. The front cover plate 540 is fixed to the front side of the third air duct plate 530, and the front cover plate 540 forms the rear appearance of the refrigerator compartment 121.

[0128] The third air duct plate 530 and the front cover plate 540 are respectively provided with openings to form a second air outlet, which connects to the third air duct 510 and the refrigerator compartment 121.

[0129] Combination Figure 13 Along the width of the refrigerator, the third air duct plate 530 is smaller than the front cover plate 540, so that a portion of the front cover plate 540 has a gap directly between it and the rear wall of the refrigerator compartment 120 to form the third return air duct 520. Furthermore, this portion of the front cover plate 540 is provided with a second return air inlet 521, which connects the refrigerator compartment 121 and the third return air duct 520.

[0130] Thus, the cold air from the second cooling channel 310 of the second connecting component 300 enters the refrigerator compartment 121 through the third air supply duct 510, and the return air from the refrigerator compartment 121 enters the second return channel 320 through the third return air duct 520.

[0131] Reference Figure 3 Viewed from the rear of the refrigerator, the bottom part of the third air duct 510, the second cooling channel 310 and the first air duct 410 extend along the height direction of the variable temperature chamber 130.

[0132] Thus, the bottom part of the third air duct 510, the second cooling channel 310, and the first air duct 410 do not bend in the width direction of the refrigerator.

[0133] This configuration ensures a smooth and vertical airflow path, which helps reduce wind resistance and improve cooling efficiency.

[0134] Reference Figure 14 and Figure 15 In some embodiments of this application, the refrigerator further includes: a third air duct component 600, which is disposed inside the freezer compartment 140. The third air duct component 600 is configured to form a fourth air supply duct 610, which is connected to the freezer compartment 141 and to the first cooling channel 210.

[0135] There is a gap between the third air duct component 600 and the rear wall of the freezer liner 140, and an evaporation chamber is formed within this gap.

[0136] The third air duct component 600 may include a fourth air duct plate 620 and a fifth air duct plate 630, with the fourth air duct plate 620 located near the rear wall of the freezer compartment 140 relative to the fifth air duct plate 630. A fourth air duct 610 is formed between the fourth air duct plate 620 and the fifth air duct plate 630. A freezer compartment 141 is formed on the front side of the fifth air duct plate 630.

[0137] The fifth air duct plate 630 is provided with a third air outlet 631, which is connected to the fourth air duct 610.

[0138] There is a gap between the fourth air duct plate 620 and the rear wall of the freezer liner 140, and an evaporation chamber is formed within this gap. The bottom end of the fourth air duct plate 620 is spaced from the bottom end of the freezer liner 140 to form a third return air inlet 632, which communicates with the bottom end of the evaporation chamber.

[0139] The fourth air duct plate 620 is also provided with an air inlet 621. The axis of the air inlet 621 is parallel to the depth direction of the refrigerator. The air inlet 621 connects the evaporation chamber and the fourth air supply duct 610. The air inlet 621 is located above the evaporator, and the third return air inlet 632 is located below the evaporator.

[0140] A fan 640 is installed in the fourth air supply duct 610. The fan 640 is opposite to the air inlet 621, which helps to form negative pressure and facilitates the flow of cold air.

[0141] Reference Figure 16 The top of the third air duct component 600 forms a first opening 650, which is located above the fan 640 and is connected to the fourth air supply duct 610.

[0142] Continue to refer to Figure 16 The freezer compartment 140 is provided with a ninth connection port 142. When the fourth air duct component 700 is installed inside the freezer compartment 140, the first opening 650 is opposite to the ninth connection port 142.

[0143] Combination Figure 9 and Figure 10 The bottom end of the first connecting component 200 forms a ninth connecting port 213, which is connected to the bottom end of the first cooling channel 210. When the first connecting component 200 is connected to the freezer liner 140, the ninth connecting port 213 is opposite to the ninth connecting port 142, so that the first cooling channel 210 is connected to the fourth air supply duct 610 through the ninth connecting port 213, the ninth connecting port 142 and the first opening 650, so that the cold air from the fourth air supply duct 610 can enter the first cooling channel 210.

[0144] In this embodiment, when the return air from the variable temperature compartment 131 and the cold storage compartment 121 passes through the freezer compartment 140, the return air structure is embedded inside the freezer compartment 140, which is beneficial for the flattened design of the return air structure and reduces the space occupied by the return air structure in the depth direction.

[0145] Therefore, referring to Figure 15 and Figure 16 The refrigerator may also include a fourth air duct component 700, which is disposed inside the freezer compartment 140 and located between the third air duct component 600 and the rear wall of the freezer compartment 140.

[0146] An evaporation chamber 146 is formed between the fourth air duct component 700 and the third air duct component 600, and a fourth return air duct 710 is formed between the fourth air duct component 700 and the rear wall of the freezer liner 140. The top end of the fourth return air duct 710 is connected to the first return channel 220, and the bottom end of the fourth return air duct 710 is connected to the evaporation chamber 146.

[0147] In this embodiment, a fourth air duct component 700 is provided inside the freezer compartment 140, forming a fourth return air duct 710 with the freezer compartment 140. The fourth return air duct 710 connects the first return channel 220 and the evaporator chamber 146, allowing the return air from the refrigerator compartment 121 to return to the evaporator chamber 146 via the fourth return air duct 710. This arrangement facilitates the flattened design of the fourth return air duct 710, thereby reducing the thickness of the foam insulation layer at the rear of the freezer compartment 140 and increasing the effective volume of the refrigerator to a certain extent.

[0148] Continue to refer to Figure 15 and Figure 16 A fifth return air duct 720 is formed between the fourth air duct component 700 and the rear wall of the freezer liner 140. The top end of the fifth return air duct 720 is connected to the second return air duct 440, and the bottom end of the fifth return air duct 720 is connected to the evaporation chamber 146.

[0149] The top end of the fifth return air duct 720 is connected to the bottom end of the third return channel 240, so that the fifth return air duct 720 is indirectly connected to the second return air duct 440 through the third return channel 240, thereby allowing the return air of the variable temperature chamber 131 to return to the evaporation chamber 146 through the fifth return air duct 720.

[0150] Along the width of the refrigerator, since the second return air duct 440 is closer to the side edge of the variable temperature chamber 130 than the first return air duct 420, the third return air duct 240 is closer to the side edge of the variable temperature chamber 130 than the first return air duct 220, and the fifth return air duct 720 is closer to the side edge of the freezer chamber 140 than the fourth return air duct 710. This design reduces structural complexity caused by intersecting air ducts and simplifies and streamlines the air duct structure, thus reducing air resistance.

[0151] In the embodiments of this application, combined with Figure 16 The fourth air duct component 700 may include a plate body, side portions, and a second partition 730. The plate body is opposite to the rear wall of the freezer liner 140 along the depth direction. Side portions are respectively provided on both sides of the plate body along the width direction, and the second partition 730 is disposed in the middle of the plate body. Along the width direction, there is a gap between the second partition 730 and the side portions for forming the fourth return air duct 710 and the fifth return air duct 720. The fourth return air duct 710 and the fifth return air duct 720 are respectively located on both sides of the second partition 730 along the width direction, and the second partition 730 abuts against the rear wall of the freezer liner 140 to separate the fourth return air duct 710 and the fifth return air duct 720.

[0152] Combination Figure 3 In this embodiment of the application, the fifth return air duct 720 and the fourth return air duct 710 are arranged side by side along the width direction of the freezer liner 140.

[0153] In this embodiment of the application, the fourth air duct component 700 and the rear wall of the freezer liner 140 form a fourth return air duct 710 and a fifth return air duct 720. The fifth return air duct 720 is used to realize the return air of the variable temperature compartment 131, and the fourth return air duct 710 is used to realize the return air of the refrigerator compartment 121. The two are independent of each other, avoiding premature mixing of air at different temperatures in the two compartments during the return air process, which is conducive to the efficient operation of the evaporator and the precise temperature control of each compartment.

[0154] Furthermore, continuing the flattened design of the air duct, the fifth return air duct 720 and the fourth return air duct 710 are arranged side by side along the width direction of the freezer liner 140, which facilitates the flattened design of the air duct.

[0155] Continue to refer to Figure 16 The top ports of the fifth return air duct 720 and the fourth return air duct 710 are close to one side of the freezer liner 140 along the width direction. The fifth return air duct 720 and the fourth return air duct 710 are curved and extend obliquely toward the other side of the freezer liner 140 along the width direction, providing a basis for the flattened design of the fifth return air duct 720 and the fourth return air duct 710.

[0156] The bottom portions of the fifth return air duct 720 and the fourth return air duct 710 extend along the height direction, so that the portions of the fifth return air duct 720 and the fourth return air duct 710 that connect with the evaporator chamber 146 extend along the height direction, guiding the return air into the evaporator chamber 146 and improving the smoothness of the return air.

[0157] Reference Figure 16The third return channel 240, the first return channel 220 and the first cooling channel 210 are arranged at intervals along the width direction of the freezer liner 140; the third return channel 240 is located on the side of the first return channel 220 away from the first cooling channel 210.

[0158] In this embodiment, the first connecting component 200 simultaneously forms a third return flow channel 240 for the return air of the variable temperature compartment 131, a first return flow channel 220 for the return air of the cold storage compartment 121, and a first cooling channel 210 for supplying cold air to the cold storage compartment 121 and the variable temperature compartment 131. This high degree of integration and modularity helps reduce the number of parts, simplify the assembly process, and improve production efficiency. Moreover, it helps to ensure the independence and relative sealing between each channel.

[0159] The third return channel 240, the first return channel 220, and the first cooling channel 210 are arranged at intervals along the width of the freezer liner 140, so that the foam insulation layer can enter the interval, which helps to ensure temperature isolation between each channel and reduce the temperature influence between each channel.

[0160] Moreover, the third return channel 240, the first return channel 220 and the first cooling channel 210 do not intersect or overlap in the width direction, which can avoid occupying too much space in the depth direction, ensure that each air duct has sufficient installation space, and make the structure of each channel simple, which is conducive to reducing wind resistance.

[0161] Refer again Figure 9 and Figure 10 The freezer compartment 140 is provided with a tenth connection port 143 and an eleventh connection port 144. The tenth connection port 143 is connected to the fourth return air duct 710, and the eleventh connection port 144 is connected to the fifth return air duct 720.

[0162] The bottom end of the first connecting component 200 is provided with a tenth connecting port 222 and an eleventh connecting port. The tenth connecting port 222 is connected to the first return channel 220, and the eleventh connecting port 242 is connected to the third return channel 240.

[0163] When the first connecting component 200 is connected to the freezer liner 140, the tenth connecting port 222 is opposite to the tenth connecting port 143, realizing the connection between the first return channel 220 and the fourth return air duct 710; the eleventh connecting port 242 is opposite to the eleventh connecting port 144, realizing the connection between the third return channel 240 and the fifth return air duct 720.

[0164] In the embodiments of this application, combined with Figure 15Under the action of the fan 640, the air located at the bottom of the evaporator in the evaporation chamber 146 flows upward and forms cold air after exchanging heat with the evaporator. The cold air enters the fourth air supply duct 610 from the evaporation chamber 146 through the air inlet 621. Part of the cold air in the fourth air supply duct 610 enters the freezer chamber 141 through the third air supply port 631. The return air in the freezer chamber 141 returns to the bottom of the evaporation chamber 146 through the third return air port 632. This cycle repeats to achieve the cooling of the freezer chamber 141.

[0165] The remaining portion of the cold air from the fourth air supply duct 610 enters the first cooling channel 210, combined with... Figure 3 When the first damper 411 of the first air supply duct 410 is opened, the cold air from the first cooling channel 210 enters the first air supply duct 410 through the first connecting port 211, then enters the third air supply duct 510 through the second cooling channel 310, and finally enters the refrigerator compartment 121. The return air from the refrigerator compartment 121 enters the third return air duct 520 through the second return air inlet 521, and the return air from the third return air duct 520 enters the first return air duct 420 through the second return channel 320, then enters the fourth return air duct 710 through the first return channel 220, and returns to the evaporator chamber 146, thus achieving the cooling of the refrigerator compartment 121.

[0166] Continue to refer to Figure 3 When the second damper 432 of the second air supply duct 430 is opened, the cold air from the first cooling channel 210 enters the second air supply duct 430 through the second connecting port 212, and then enters the variable temperature chamber 131. The return air from the variable temperature chamber 131 enters the second return air duct 440 through the first return air port 441, and the return air from the second return air duct 440 enters the fifth return air duct 720 through the third return channel 240, returning to the evaporator chamber 146, thus achieving cooling of the variable temperature chamber 131.

[0167] exist Figure 3 In the diagram, red lines represent return air paths, and blue lines represent supply air paths. Dashed lines represent the supply and return air of the refrigerator compartment 121, solid lines represent the supply and return air of the variable temperature compartment 131, and dotted lines represent the airflow paths within the freezer liner 140 and towards the first connecting component 200.

[0168] Combination Figure 2 In some embodiments of this application, a portion of the rear wall of the temperature chamber 130 protrudes rearward to form a first protrusion 124; at least a portion of the first air duct component 400 is located within the first protrusion 124.

[0169] By providing a first protrusion 124 on the rear wall of the temperature chamber 130, a first recess is formed inside the temperature chamber 130 to accommodate at least a portion of the first air duct component 400, thereby reducing the space occupied by the first air duct component 400 inside the temperature chamber 130.

[0170] Combination Figure 2 A portion of the rear wall of the refrigerator liner 120 protrudes rearward to form a second protrusion 138; at least a portion of the second air duct component 500 is located within the second protrusion 138 and surrounds the second protrusion 138 to form a third air duct 510.

[0171] By providing a second protrusion 138 on the rear wall of the refrigerator liner 120 and forming a second recess inside the refrigerator liner 120 to accommodate at least a portion of the second air duct component 500, the space occupied by the second air duct component on the interior of the refrigerator liner 120 can be reduced.

[0172] Continue to refer to Figure 16 The rear wall of the freezer liner 140 protrudes rearward to form a third protrusion 145; the fourth air duct component 700 and the third protrusion 145 enclose each other to form a fourth return air duct 710 and a fifth return air duct 720.

[0173] By providing a third protrusion 145 on the rear wall of the freezer liner 140, a third recess is formed inside the freezer liner 140, which together with the fourth air duct component 700 forms the fourth return air duct 710 and the fifth return air duct 720.

[0174] In this type of refrigerator, after the improvements made using this application, the thickness of the foam insulation layer on the rear side of the refrigerator compartment 120 can be 44mm, and the thickness of the foam insulation layers on the left and right sides of the refrigerator compartment 120 can be reduced from the original 46mm to 44mm. The thickness of the foam insulation layer on the rear side of the variable temperature compartment 130 is reduced from the original 133mm to 92mm, and the thickness of the foam insulation layers on the left and right sides of the variable temperature compartment 130 can be 64mm. The thickness of the foam insulation layer on the rear side of the freezer compartment 140 is reduced from the original 86mm to 75mm, and the thickness of the foam insulation layer on the rear side of the freezer compartment 140 is reduced from the original 74mm to 64mm.

[0175] 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.

[0176] 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 described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that, include: A refrigerator liner, wherein a refrigerator compartment is provided inside the refrigerator liner; A variable temperature chamber, wherein a variable temperature temperature room is provided inside the variable temperature chamber; The variable temperature chamber liner is located below the refrigerator liner; The freezer liner is provided with an evaporation chamber for installing an evaporator and a freezing chamber, and the freezer liner is located below the variable temperature chamber liner; A first connecting component is disposed between the freezer chamber and the variable temperature chamber; the first connecting component is configured to form a first cooling channel and a first reflux channel, which are respectively connected to the evaporation chamber; The second connecting component is disposed between the variable temperature chamber and the refrigerator chamber; the second connecting component is configured to form a second cooling channel and a second return channel, the second cooling channel and the second return channel being respectively connected to the refrigerator compartment; A first air duct component is disposed inside the temperature-controlled chamber, and the first air duct component is used to form: The first air supply duct connects the first cooling channel and the second cooling channel, so that the cold air from the evaporation chamber passes through the first cooling channel, the first air supply duct and the second cooling channel and enters the cold storage room; The first return air duct connects the first return channel and the second return channel, so that the return air of the refrigerator compartment can return to the evaporation chamber through the second return channel, the first return air duct and the first return channel.

2. The refrigerator according to claim 1, characterized in that, The first air duct component is also used to construct: The second air supply duct, one end of which is connected to the variable temperature chamber; The second return air duct has one end connected to the variable temperature chamber and the other end connected to the evaporation chamber. The first cooling channel has a first connecting port and a second connecting port, the first connecting port being connected to the first air supply duct; the second connecting port being connected to the second air supply duct.

3. The refrigerator according to claim 2, characterized in that, The second air supply duct, the second air return duct, the first air supply duct, and the first air return duct are arranged side by side along the width direction of the variable temperature chamber; the second air supply duct is located on the side of the first air supply duct away from the first air return duct, and the second air return duct is located on the side of the first air return duct away from the first air supply duct.

4. The refrigerator according to claim 2, characterized in that, The first air duct component includes: The first air duct plate is attached to the rear wall of the inner chamber of the variable temperature chamber; The second air duct plate is located in front of the first air duct plate, and the second air duct plate and the first air duct plate enclose each other to form the first air supply duct, the second air supply duct and the first return air duct. A duct cover is fixed to the front side of the second duct plate; the duct cover and the rear wall of the temperature chamber liner form the second return air duct.

5. The refrigerator according to any one of claims 1-4, characterized in that, The refrigerator also includes a second air duct component, which is disposed inside the refrigerator compartment and is used to form: The third air supply duct is connected to the refrigerator compartment, and the bottom end of the third air supply duct is connected to the top end of the second cooling channel. The third return air duct is connected to the refrigerator compartment and the second return channel respectively; Viewed from the rear of the refrigerator, the bottom portion of the third air duct, the second cooling channel, and the first air duct extend along the height direction of the variable temperature chamber.

6. The refrigerator according to any one of claims 2-4, characterized in that, The refrigerator also includes: A third air duct component is disposed inside the freezer compartment. The third air duct component is configured to form a fourth air supply duct. The fourth air supply duct is connected to the freezer compartment and is also connected to the first cooling channel. A fourth air duct component is disposed inside the freezer liner and located between the third air duct component and the rear wall of the freezer liner; the evaporation chamber is formed between the fourth air duct component and the third air duct component, and a fourth return air duct is formed between the fourth air duct component and the rear wall of the freezer liner; the top end of the fourth return air duct communicates with the first return channel, and the bottom end of the fourth return air duct communicates with the evaporation chamber.

7. The refrigerator according to claim 6, characterized in that, A fifth return air duct is also formed between the fourth air duct component and the rear wall of the freezer liner. The top end of the fifth return air duct is connected to the second return air duct, and the bottom end of the fifth return air duct is connected to the evaporation chamber. The fifth return air duct and the fourth return air duct are arranged side by side along the width of the freezer liner.

8. The refrigerator according to claim 7, characterized in that, The first connecting component is also configured to form a third return channel, the top end of which is connected to the second return air duct, and the bottom end of which is connected to the fifth return air duct; the third return channel, the first return channel, and the first cooling channel are arranged at intervals along the width direction of the freezer liner; the third return channel is located on the side of the first return channel away from the first cooling channel.

9. The refrigerator according to any one of claims 1-4, characterized in that, A portion of the rear wall of the temperature chamber chamber protrudes rearward to form a first protrusion; at least a portion of the first air duct component is located within the first protrusion.

10. A refrigerator, characterized in that, include: The first box liner, the first box liner is provided with a first compartment; The second box liner, which contains a second compartment; The third compartment contains a third chamber; the third compartment, the second compartment, and the first compartment are arranged sequentially along the height of the refrigerator; the third compartment contains an evaporator. A first air duct component is disposed inside the second housing, and the first air duct component is used to construct: The first air supply duct has one end connected to the chamber where the evaporator is located and the other end connected to the first compartment, so that the cold air passing through the evaporator can enter the first compartment through the first air supply duct. The first return air duct has one end connected to the chamber where the evaporator is located, and the other end connected to the first compartment, so that the return air from the first compartment can return to the chamber where the evaporator is located through the first return air duct.

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