Refrigerator with front return air

Abstract

The application provides a refrigerator with front return air. The refrigerator comprises a cabinet, a cooling chamber and at least one storage space adjacent to the cooling chamber, a top wall of the cooling chamber is provided with a return air port communicating with the storage space to realize return air of the storage space to the cooling chamber, a door body is arranged on the front surface of the cabinet to operatively open and close the storage space, and an evaporator is arranged in the cooling chamber in a flat cubic shape and configured to provide cold air to the storage space. The refrigerator has the cooling chamber arranged below the storage space, so that the storage space has a certain height from the ground, the user can avoid bending or squatting to take or place the articles, the storage space adjacent to the cooling chamber directly returns air through the return air port on the front end of the top wall of the cooling chamber, the return air duct arranged on the rear wall of the storage space avoids occupying the space in the depth direction of the refrigerator, and the storage capacity is effectively improved.

Description

[0001] This application is a divisional application of Chinese patent application No. 201810333832.3, filed on April 13, 2018, entitled "Refrigerator with Front Return Air". Technical Field

[0002] This invention relates to the field of home appliances, and in particular to a refrigerator with front-mounted air return. Background Technology

[0003] As society develops and people's living standards improve, the pace of life becomes faster and faster. As a result, people are more willing to buy a lot of food and store it in the refrigerator. The refrigerator has become one of the indispensable household appliances in people's daily lives.

[0004] Modern refrigerators typically have multiple storage compartments, configured as refrigeration, freezing, variable temperature, or preservation compartments depending on their purpose. Accessing the bottom storage space is often inconvenient, requiring users to squat down, negatively impacting the user experience. Furthermore, when the bottom storage space is designed as a drawer, the compressor compartment at the rear of the bottom often occupies some drawer space, resulting in irregularly shaped drawers and underutilization of the bottom storage area. Additionally, current bottom drawers are often too deep, requiring users to spend excessive time rummaging through them to retrieve items, wasting time and energy. Summary of the Invention

[0005] One objective of this invention is to increase the ground clearance of the storage space at the bottom of the refrigerator, thereby reducing the need for users to bend over to retrieve or place items.

[0006] A further objective of this invention is to improve the utilization of refrigerator storage space and enhance the user experience.

[0007] In particular, the present invention provides a refrigerator. The refrigerator includes: a cabinet that defines a cooling chamber and at least one storage space adjacent to and above the cooling chamber, wherein a return air vent communicating with the storage space is provided at the front end of the top wall of the cooling chamber to allow the storage space to return air to the cooling chamber; a door provided on the front surface of the cabinet for operable opening and closing of the storage space; and an evaporator that is generally flat and cubic in shape and is horizontally placed in the cooling chamber and configured to provide cooling capacity to the storage space.

[0008] Optionally, the cabinet interior defines multiple storage spaces, including a refrigeration space and at least one freezer space, and the cabinet includes: a freezer inner liner, which defines a cooling chamber and at least one freezer space located directly above the cooling chamber; and a refrigeration inner liner, located directly above the freezer inner liner, which defines a refrigeration space.

[0009] Optionally, the refrigerator also includes an evaporator cover, which covers the evaporator and serves as a top wall to define the cooling chamber together with the freezer liner.

[0010] Optionally, the refrigerator further includes: an air supply duct, disposed on the inner rear wall of the refrigerator liner and the freezer liner, having an air supply inlet at its bottom end that connects to the cooling chamber, and air supply outlets corresponding to the refrigerator compartment and the freezer compartment respectively, to transfer the cooling capacity provided by the evaporator to the storage space; and a return air duct, disposed on either side wall of the refrigerator liner and the freezer liner, having a return air inlet at its upper end that connects to the refrigerator compartment, and a return air outlet at its lower end that connects to the cooling chamber, to realize the return air from the refrigerator compartment to the cooling chamber.

[0011] Optionally, the return air inlet is located at the front of the side wall of the refrigerator liner, and the return air outlet is located at the front of the side wall of the same side as the freezer liner.

[0012] Optionally, two return air ducts are provided, and they are symmetrically arranged on the front of the two side walls of the refrigerator inner liner and the freezer inner liner.

[0013] Optionally, a drainage slope and heating wire are provided at the return air outlet to remove the chilled water present at the return air outlet.

[0014] Optionally, the refrigerator body also includes: a shell disposed outside the freezer liner and the refrigerator liner; and an insulation layer disposed between the shell and the refrigerator liner and the freezer liner to insulate against heat from the outside of the refrigerator.

[0015] Optionally, the housing includes: a first bottom plate, disposed below the freezer liner, including: a front bottom plate located at the front side of the bottom of the refrigerator, an inclined plate extending backward and upward from the rear end of the front bottom plate, and a rear top plate extending backward from the upper end of the inclined plate, the inclined plate having a window; a second bottom plate, located below the rear top plate, the front end of the second bottom plate being spaced apart from the rear end of the front bottom plate to form a gap; and an air guide cover, covering the window and dividing the gap into a heat dissipation air inlet and a heat dissipation air outlet.

[0016] Optionally, the housing also includes: two side panels and a back panel, configured together with the rear top panel and the second bottom panel to define a compressor compartment, the compressor compartment being located behind the cooling chamber, and the refrigerator also includes: a condenser, a cooling fan and a compressor arranged laterally in the compressor compartment, wherein the condenser is located on the side near the cooling air inlet, the compressor is located on the side near the cooling air outlet, and the cooling fan is located between the condenser and the compressor.

[0017] The refrigerator of the present invention includes: a cabinet defining a cooling chamber and at least one storage space adjacent to and above the cooling chamber; a return air vent connected to the storage space is provided at the front end of the top wall of the cooling chamber to allow return air from the storage space to the cooling chamber; a door disposed on the front surface of the cabinet for operable opening and closing of the storage space; and an evaporator, which is generally flat and cubic in shape and horizontally disposed in the cooling chamber, and configured to provide cooling capacity to the storage space. Positioning the cooling chamber below the storage space provides the storage space with a certain height from the ground, avoiding the need for users to bend over or squat to retrieve items, thus improving the user experience. The storage space adjacent to the cooling chamber receives return air directly through the return air vent at the front end of the top wall of the cooling chamber, avoiding the need for a return air duct on the rear wall of the storage space, which would occupy space in the depth direction of the refrigerator, effectively increasing the storage capacity.

[0018] Furthermore, the refrigerator of the present invention also includes: a return air duct, disposed on either side wall of the refrigerator inner liner and the freezer inner liner, with a return air inlet at its upper end communicating with the refrigerator space and a return air outlet at its lower end communicating with the cooling chamber, so as to realize the return air from the refrigerator space to the cooling chamber. This avoids the situation where the cooling chamber is located below the freezer space and can only provide return air to the freezer space, but not to the refrigerator space above the freezer space, effectively ensuring the reliability of the overall air circulation of the refrigerator.

[0019] Furthermore, in this refrigerator, both the cooling compartment and the compressor compartment are located at the bottom of the cabinet, with the compressor compartment situated at the rear of the cooling compartment. This creates a planar storage space above the compressor compartment and the cooling compartment, improving storage space utilization compared to irregularly shaped spaces. Additionally, the reduced depth of the storage space allows for unfolded storage instead of stacked items, facilitating item retrieval, saving users time and effort, and further enhancing the user experience. The condenser, cooling fan, and compressor are arranged horizontally in sequence within the compressor compartment. The condenser is positioned near the air inlet, the compressor near the air outlet, and the cooling fan between the condenser and compressor. This arrangement effectively utilizes space while meeting technical requirements, minimizing the area occupied by the refrigerator.

[0020] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0021] The following sections will describe some specific embodiments of the invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0022] Figure 1This is a schematic diagram of the structure of a refrigerator according to an embodiment of the present invention;

[0023] Figure 2 This is an internal schematic diagram of a refrigerator according to an embodiment of the present invention;

[0024] Figure 3 This is an exploded view of a refrigerator according to an embodiment of the present invention;

[0025] Figure 4 This is a partial schematic diagram of a refrigerator according to an embodiment of the present invention;

[0026] Figure 5 This is a partial cross-sectional view of a refrigerator according to an embodiment of the present invention;

[0027] Figure 6 yes Figure 5 A magnified schematic diagram of the middle region R;

[0028] Figure 7 This is a partial schematic diagram of a refrigerator according to another embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the bottom of the refrigerator casing according to an embodiment of the present invention; and

[0030] Figure 9 yes Figure 8 A schematic diagram of its breakdown. Detailed Implementation

[0031] This embodiment first provides a refrigerator in which the cooling chamber is located below the storage space, giving the storage space a certain height from the ground. This avoids users having to bend over or squat to retrieve items, improving the user experience. The storage space adjacent to the cooling chamber directly receives air return through the return air vent at the front of the cooling chamber's top wall, avoiding the need for a return air duct on the rear wall of the storage space, which would occupy space in the refrigerator's depth direction and effectively increase storage capacity. Figure 1 This is a schematic diagram of the structure of a refrigerator 100 according to an embodiment of the present invention. Figure 2 This is an internal schematic diagram of a refrigerator 100 according to an embodiment of the present invention. Figure 3 This is an exploded view of a refrigerator 100 according to an embodiment of the present invention. Figures 1 to 3 As shown, the refrigerator 100 of this embodiment generally includes: a cabinet 10, a door 20, and an evaporator 21.

[0032] The refrigerator body 10 includes a cooling chamber 11 and at least one storage space adjacent to the cooling chamber 11. A return air vent 112, connecting the storage space, is located at the front end of the top wall of the cooling chamber 11, allowing air to return from the storage space to the cooling chamber 11. This avoids the need for a return air duct on the rear wall of the storage space, which would otherwise occupy space in the depth direction of the refrigerator 100, effectively increasing the storage capacity.

[0033] like Figure 2 As shown, the refrigerator 100 of this embodiment may include three storage spaces arranged from top to bottom: a first space 131, a second space 132, and a third space 133. The first space 131, the second space 132, and the third space 133 may be configured as a refrigeration space, a freezing space, a variable temperature space, or a preservation space, depending on their purpose. Each storage space may be divided into multiple storage areas by partitions, and items may be stored using shelves or drawers.

[0034] Specifically, the refrigerator 100 of this embodiment has multiple storage spaces inside its body 10, including a refrigeration space and at least one freezer space. For example... Figure 2 and Figure 3 As shown, the cabinet 10 may include a refrigerator inner liner 72 and a freezer inner liner 71. The freezer inner liner 71 internally defines a cooling chamber 11 and at least one freezing space located directly above the cooling chamber 11. The refrigerator inner liner 72 is disposed directly above the freezer inner liner 71 and internally defines a refrigeration space. Specifically, in this embodiment, the refrigerator inner liner 72 internally defines a first space 131, which can be configured as a refrigeration space. The freezer inner liner 71 internally defines a second space 132, a third space 133, and the cooling chamber 11. The second space 132 and the third space 133 can be configured as freezer spaces, and the cooling chamber 11 is disposed directly below the second space 132 and the third space 133.

[0035] In addition, the refrigerator body 10 may also include a shell 60 and an insulation layer (not shown in the figure). The shell 60 is disposed outside the freezer liner 71 and the refrigerator liner 72. The insulation layer is disposed between the shell 60 and the refrigerator liner 72 and the freezer liner 71 to insulate the refrigerator body from external heat.

[0036] Doors 20 are disposed on the front surface of the housing 10 to operably open and close the storage spaces. Doors 20 are correspondingly arranged to storage spaces, meaning each storage space has one or more doors. Doors 20 can be pivotally disposed on the front surface of the housing 10; for example, the door of the first space 131 in this embodiment can be a pivot-opening door. The second space 132 and the third space 133 in this embodiment can be drawer-type opening doors. Drawer slides can be provided at the bottom of the second space 132 and the third space 133 to ensure smooth opening and closing of the drawers and reduce noise.

[0037] The evaporator 21, in a flat cubic shape, is horizontally positioned in the cooling chamber 11 and configured to provide cooling capacity to the storage space. The evaporator 21 is positioned horizontally in the cooling chamber 11 with its long and wide sides parallel to the horizontal plane, and its thick side perpendicular to the horizontal plane. The evaporator 21 provides different amounts of cooling capacity to different types of storage spaces, resulting in different temperatures within these spaces. For example, the temperature in a refrigerated space is generally between 2°C and 10°C, preferably between 4°C and 7°C. The temperature range in a frozen space is generally between -22°C and -14°C. Different types of items have different optimal storage temperatures, and therefore, different suitable storage spaces. For example, fruits and vegetables are suitable for storage in refrigerated or crisper compartments, while meat is suitable for storage in frozen compartments.

[0038] like Figure 3 As shown, the refrigerator 100 may further include: an evaporator cover 111, which covers the evaporator 21 and, together with the freezer inner liner 71, defines the cooling chamber 11 as a top wall. In a preferred embodiment, the front end of the evaporator cover 111 is provided with a return air vent 112 communicating with the freezer space to allow air to return from the freezer space to the cooling chamber 11. Specifically, the return air vent 112 can be louvered. In this embodiment, the second space 132 and the third space 133 serve as freezer spaces, adjacent to each other above the cooling chamber 11, and both can allow air to return to the cooling chamber 11 through the return air vent 112.

[0039] Figure 4 This is a partial schematic diagram of a refrigerator 100 according to an embodiment of the present invention. Figure 3 As shown, the refrigerator 100 may further include: a supply air duct 31 and a return air duct 32. The supply air duct 31 is located on the inner rear wall of the refrigerator liner 72 and the freezer liner 71, as shown... Figure 3 and Figure 4 As shown, its bottom end has an air inlet 312 that connects to the cooling chamber 11, and air outlets 311 are respectively provided for the refrigeration space and the freezing space to transfer the cooling capacity provided by the evaporator 21 to the storage space. Since the air outlets 311 are located on the rear side of each storage space, the cooling capacity of each storage space is transferred from the rear to the front.

[0040] In a preferred embodiment, such as Figure 4As shown, a cooling fan 22 can also be installed behind the evaporator 21. This cooling fan 22 can be tilted forward behind the evaporator 21, and its outlet direction can be directly facing the air inlet 312, allowing the cooling energy generated by the evaporator 21 to smoothly enter the air duct 31. The angle between the axis of the cooling fan 22 and the inlet 312 is ±10°. Furthermore, the angle between the axis of the cooling fan 22 and the horizontal plane is 30° to 45°. The cooling fan 22's tilted installation at the aforementioned angles effectively ensures smooth airflow and improves the operational reliability of the refrigerator 100.

[0041] like Figure 3 As shown, the return air duct 32 can be installed on either side wall of the refrigerator inner liner 72 and the freezer inner liner 71, with a return air inlet at its upper end connecting to the refrigerator space and a return air outlet at its lower end connecting to the cooling chamber 11, so as to realize the return air from the refrigerator space to the cooling chamber 11. Specifically, the return air inlet is located at the front of the side wall of the refrigerator inner liner 72, and the return air outlet 323 is located at the front of the side wall of the freezer inner liner 71 on the same side. Furthermore, the return air outlet 323 is located on the side wall of the freezer inner liner 71 in the cooling chamber 11. The return air inlet and return air outlet 323 are located at the front of the side walls of the refrigerator inner liner 72 and the freezer inner liner 71, so that the cold air inside the refrigerator space can be fully cooled from back to front and then returned to the cooling chamber 11 through the return air duct. In a preferred embodiment, two return air ducts 32 can be provided, and they can be symmetrically arranged on the two side walls of the refrigerator inner liner 72 and the freezer inner liner 71.

[0042] In this embodiment, the first space 131 is a refrigerated space, which may also contain an independent variable-temperature space. The variable-temperature space can be equipped with a heater, capable of heating items in a closed system without affecting the temperature of the external refrigerated space. Therefore, as... Figure 4 As shown, in this embodiment, a refrigerated return air inlet 321 and a variable temperature return air inlet 322 are provided in the first space 131, so that both the refrigerated space and the variable temperature space can independently achieve air return through the return air duct 32. After the air from the refrigerated space and the variable temperature space returns to the cooling chamber 11, it can also effectively defrost the evaporator 21.

[0043] Figure 5 This is a partial cross-sectional view of a refrigerator 100 according to an embodiment of the present invention. Figure 6 yes Figure 5 A magnified view of the middle region R. Figure 7 This is a partial schematic diagram of a refrigerator 100 according to another embodiment of the present invention. Figure 5 and Figure 6 As shown, area R is the return air outlet 323 connecting the return air duct 32 and the cooling chamber 11, where a drainage slope 33 is installed. Figure 7As shown, a heating wire 34 is also installed at the return air outlet 323. The drainage slope 33 and the heating wire 34 work together to remove the ice water present at the return air outlet 323. When the high-temperature and high-humidity gas in the refrigerated space approaches the ambient temperature under the circulation of the air duct, condensation or even frost may occur. Over time, the return air outlet 323, which connects the return air duct 32 to the cooling chamber 11, may become blocked by frost. To avoid this problem, a drainage slope 33 and a heating wire 34 are installed here. The drainage slope 33 can remove the ice water present at this location, and the heating wire 34 can operate according to the corresponding program to assist in removing the ice water.

[0044] Figure 8 This is a schematic diagram of the bottom structure of the casing 60 of a refrigerator 100 according to an embodiment of the present invention. Figure 9 yes Figure 8 A diagram showing the breakdown of the diagram. (See diagram below.) Figure 8 and Figure 9 As shown, the housing 60 may include: a first base plate 61, a second base plate 62, and an air guide cover 63. The first base plate 61, located below the freezer liner 71, includes: a front base plate 611 located at the front of the bottom of the refrigerator 100, an inclined plate 612 extending backward and upward from the rear end of the front base plate 611, and a rear top plate 613 extending backward from the upper end of the inclined plate 612. A window 614 is provided on the inclined plate 612. The second base plate 62 is located below the rear top plate 613, with its front end spaced from the rear end of the front base plate 611 to form a gap. The air guide cover 63 covers the window 614 and divides the gap into a heat dissipation air inlet 121 and a heat dissipation air outlet 122.

[0045] In addition, the housing 60 may also include two side panels 64 and a back panel 65, configured together with the rear top panel 613 and the second bottom panel 62 to define a compressor compartment 12, which is located behind the cooling chamber 11. The refrigerator 100 may also include a condenser 25, a cooling fan 24, and a compressor 23 arranged laterally in the compressor compartment 12, with the condenser 25 located near the cooling air inlet 121, the compressor 23 located near the cooling air outlet 122, and the cooling fan 24 located between the condenser 25 and the compressor 23. This arrangement of the components in the compressor compartment 12 effectively utilizes space while meeting technical requirements, reducing the area occupied by storage space. In a specific embodiment, the refrigerator 100 may further include an evaporating dish 50, located below the condenser 25, to utilize the heat from the condenser 25 to evaporate moisture in the evaporating dish 50, and the cooling fan 24 removes the moisture for heat dissipation.

[0046] It should be noted that the refrigerator 100 in this embodiment can be a built-in refrigerator. In order to ensure the overall aesthetics, the reserved distance between the built-in refrigerator and the surrounding walls or cabinets is small, so a bottom air intake and bottom air exhaust method can be adopted. Therefore, the refrigerator 100 in this embodiment is provided with a heat dissipation air intake 121 and a heat dissipation air exhaust 122 at the bottom of the shell 60. The air from outside the refrigerator 100 enters the compressor compartment 12 through the heat dissipation air intake 121, passes through the condenser 25, the cooling fan 24 and the compressor 23 in sequence, and then flows out from the heat dissipation air exhaust 122, thus reasonably completing the entire heat dissipation cycle.

[0047] The refrigerator 100 of this embodiment includes: a cabinet 10, which internally defines a cooling chamber 11 and at least one storage space adjacent to the cooling chamber 11 above it; a return air vent 112 connected to the storage space is provided at the front end of the top wall of the cooling chamber 11 to allow the storage space to return air to the cooling chamber 11; a door 20 is provided on the front surface of the cabinet 10 to operably open and close the storage space; and an evaporator 21, which is generally flat and cubic in shape and horizontally placed in the cooling chamber 11, and configured to provide cooling capacity to the storage space. Positioning the cooling chamber 11 below the storage space allows the storage space to have a certain height from the ground, avoiding the need for users to bend over or squat to retrieve items, thus improving the user experience. The storage space adjacent to the cooling chamber 11 directly receives return air through the return air vent 112 at the front end of the top wall of the cooling chamber 11, avoiding the need for a return air duct on the rear wall of the storage space, which would occupy space in the depth direction of the refrigerator 100, effectively increasing the storage capacity.

[0048] Furthermore, the refrigerator 100 of this embodiment also includes a return air duct 32, which is disposed on either side wall of the refrigerator inner liner 72 and the freezer inner liner 71. Its upper end has a return air inlet communicating with the refrigerator space, and its lower end has a return air outlet 323 communicating with the cooling chamber 11, thereby enabling return air from the refrigerator space to the cooling chamber 11. This avoids the situation where, when the cooling chamber 11 is located below the freezer space, return air can only be provided to the freezer space, but not to the refrigerator space above the freezer space, effectively ensuring the reliability of the overall airflow circulation of the refrigerator 100.

[0049] Furthermore, in this embodiment of the refrigerator 100, both the cooling chamber 11 and the compressor compartment 12 are located at the bottom of the cabinet 10, with the compressor compartment 12 positioned at the rear of the cooling chamber 11. This makes the storage space above the compressor compartment 12 and the cooling chamber 11 a planar space, improving the utilization of storage space compared to irregularly shaped spaces. In addition, the depth of the storage space is effectively reduced, allowing items to be stored unfolded instead of stacked, making it easier for users to find items, saving them time and effort, and further enhancing the user experience. The condenser 25, the cooling fan 24, and the compressor 23 are arranged horizontally in sequence within the compressor compartment 12. The condenser 25 is located near the cooling air inlet 121, the compressor 23 is located near the cooling air outlet 122, and the cooling fan 24 is located between the condenser 25 and the compressor 23. This arrangement effectively utilizes space while meeting technical requirements, reducing the area occupied by the condenser.

[0050] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A refrigerator, comprising: A cabinet, having an interior defined by a cooling chamber and at least one storage space adjacent to and above the cooling chamber, the cabinet having an interior defined by a plurality of said storage spaces, including a refrigeration space and at least one freezing space, and the cabinet comprising: a freezing inner liner having an interior defined by the cooling chamber and at least one said freezing space located above the cooling chamber; and a refrigeration inner liner having a space defined by the refrigeration space located above the freezing inner liner; A door, disposed on the front surface of the housing, is operably used to open and close the storage space; and An evaporator is disposed in the cooling chamber and configured to provide cooling capacity to the storage space; The enclosure also includes a shell, disposed outside the storage space; The housing includes: a first bottom plate disposed below the freezer liner, comprising: a front bottom plate located at the front side of the bottom of the refrigerator, an inclined plate extending backward and upward from the rear end of the front bottom plate, and a rear top plate extending backward from the upper end of the inclined plate; a second bottom plate located below the rear top plate, the front end of the second bottom plate being spaced apart from the rear end of the front bottom plate to form a gap; and an air guide cover disposed on the inclined plate, dividing the gap into a heat dissipation air inlet and a heat dissipation air outlet.

2. The refrigerator according to claim 1, wherein, The cooling chamber has a return air vent at the front end of its top wall that connects to the refrigeration space, so as to allow air to return from the refrigeration space to the cooling chamber.

3. The refrigerator according to claim 1, further comprising: An evaporator cover is installed above the evaporator and, together with the refrigeration inner liner, defines the cooling chamber as a top wall.

4. The refrigerator according to claim 1, further comprising: An air supply duct is provided on the inner side of the rear wall of the refrigerator inner liner and the freezer inner liner. Its bottom end has an air supply inlet that connects to the cooling chamber, and air supply outlets are respectively provided for the refrigerator space and the freezer space to transfer the cooling capacity provided by the evaporator to the storage space. as well as A return air duct is provided on the side wall of either the refrigerator inner liner or the freezer inner liner, with a return air inlet at its upper end connecting to the refrigerator space and a return air outlet at its lower end connecting to the cooling chamber, so as to realize the return air from the refrigerator space to the cooling chamber.

5. The refrigerator according to claim 4, wherein, The return air inlet is located at the front of the side wall of the refrigerator liner, and the return air outlet is located at the front of the side wall on the same side as the freezer liner.

6. The refrigerator according to claim 4, wherein, Two return air ducts are provided and are symmetrically arranged on the front of the two side walls of the refrigerator inner liner and the freezer inner liner.

7. The refrigerator according to claim 4, wherein, The return air outlet is equipped with a drainage slope and a heating wire to remove the ice water present at the return air outlet.

8. The refrigerator according to claim 2, wherein the cabinet further comprises: An insulation layer is disposed between the outer shell and the refrigerator liner and the freezer liner to insulate the refrigerator from external heat.

9. The refrigerator according to claim 8, wherein, A window is provided on the inclined plate; The air guide cover is installed over the window.

10. The refrigerator according to claim 9, wherein the housing further comprises: Two side panels and a back panel are configured, together with the rear top panel and the second bottom panel, to define a compressor compartment, which is located behind the cooling chamber. The refrigerator further includes: a condenser, a cooling fan, and a compressor arranged in a horizontal sequence in the compressor compartment, wherein the condenser is located on the side near the cooling air inlet, the compressor is located on the side near the cooling air outlet, and the cooling fan is located between the condenser and the compressor.

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