WO2022037460A1

WO2022037460A1 - Refrigerator capable of returning air from side part of cabinet

Info

Publication number: WO2022037460A1
Application number: PCT/CN2021/112102
Authority: WO
Inventors: 马坚; 朱小兵; 李伟杰; 冯衬
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2020-08-18
Filing date: 2021-08-11
Publication date: 2022-02-24
Also published as: CN114076451B; CN114076451A

Abstract

Disclosed is a refrigerator capable of returning air from a side part of a cabinet thereof, the refrigerator comprising a bottom liner, a plurality of upper liners and two side wall return-air channels, wherein the bottom part of the bottom liner is provided with a cooling chamber, side walls of two sides of the cooling chamber are respectively provided with a side return-air opening, the plurality of upper liners are arranged above the bottom liner in sequence, the front parts of side walls of two sides of each upper liner are respectively provided with an air discharge opening, the two side wall return-air channels are respectively positioned at an outer part of the bottom liner and an outer part of a side wall of one side of the plurality of upper liners, each side wall return-air channel is provided with a connection opening, the lower end of each side wall return-air channel is connected to the side return-air opening, such that return airflows of the plurality of upper liners are introduced into the cooling chamber. In the refrigerator, return airflows of a refrigerating chamber and a variable-temperature chamber can all be led into the cooling chamber, and an independent air supply system of the refrigerating chamber is eliminated, such that the production costs of the refrigerator is reduced; and the side wall return-air channels are rationally arranged, such that the cabinet of the refrigerator is more stable and aesthetic.

Description

Refrigerator with air return from the side of the box

technical field

The invention relates to refrigeration and freezing technology, in particular to a refrigerator that returns air from the side of a box body.

Background technique

In the refrigerator with the evaporator at the bottom in the prior art, the return air duct on the side wall is mainly used to introduce the return air flow of the variable temperature compartment to the cooling compartment located at the bottom of the refrigerator, while the refrigeration compartment located at the top of the refrigerator adopts an independent Air supply system. This design has certain defects. For example, the side wall return duct can only ensure variable temperature return air, which has certain limitations, and the side wall return duct is a straight duct, which is prone to conflict with the position of the fixed terminal of the inner tank. The assembly process is inconvenient.

SUMMARY OF THE INVENTION

One object of the present invention is to overcome at least one defect in the prior art, and to provide a refrigerator that returns air from the side of the box.

A further object of the present invention is to realize that both the return air flow of the refrigerating room and the changing room is led into the cooling room.

Another further object of the present invention is to optimize the shape of the sidewall return air duct to make its arrangement more reasonable.

In particular, the present invention provides a refrigerator that returns air from the side of the box, including:

a bottom inner tank, the bottom of which is provided with a cooling chamber for arranging the evaporator of the refrigerator, and the side walls on both sides of the cooling chamber are respectively provided with side air return ports in the area in front of the evaporator;

A plurality of upper inner pots are arranged in sequence above the bottom inner pot, and the front parts of the side walls on both sides of each of the upper inner pots are respectively provided with air exhaust ports;

Two side wall return air ducts are respectively located outside the bottom inner liner and one side wall of the plurality of upper inner liner, and each of the side wall return air ducts is on each of the side walls on which it is located. A connection port connected to the air outlet is provided at the corresponding position of the air outlet of the upper inner liner, and the lower end is connected with the side return air outlet of the side, so as to introduce the return air flow of the plurality of upper inner liner. the cooling chamber.

Further, the distances between the side wall return air ducts and the plurality of upper inner liner and the bottom inner liner are all smaller than a set spacing value.

Further, the upper liner includes a first upper liner located above the bottom liner and a second upper liner located above the first upper liner, wherein the first upper liner, the The lateral centers of the second upper inner pot and the bottom inner pot are in the same vertical plane.

Further, the space above the cooling chamber of the bottom liner is configured as a freezing chamber;

The inner space of the first upper inner liner is configured as a greenhouse;

The inner space of the second upper inner pot is configured as a refrigerator compartment, and

The lateral width of the second upper inner pot is larger than that of the first upper inner pot.

Further, the section of the side wall return air duct extending downward from the second upper liner and the first upper liner is gradually curved toward the middle of the refrigerator, so as to ensure that the side wall return duct reaches The distance between the second upper inner tank is equal to the distance between the side wall return air duct and the first upper inner tank.

Further, the air outlets of the first upper inner liner and the second upper inner liner are on the same line along the front and rear depth directions of the refrigerator, and the side return air outlet is compared with the first upper part. The air outlet of the inner liner and the second upper inner liner is closer to the front of the box.

Further, the section of the side wall return air duct extending downward from the first upper liner and the bottom liner is gradually bent forward, so that the side wall return duct is located outside the bottom liner The segment is set vertically.

Further, the side air return port is also provided with a fixing piece, and the fixing piece is used for fixing the lower end nozzle of the side wall return air duct.

Further, the fixing member is fixedly arranged on the inner side wall of the bottom liner, and a fixing frame is opened at the opposite position of the side air return port, and the inner circumference of the fixing frame is provided with a plurality of buckles;

The lower end orifice of the side wall return air duct has a clipping section extending toward the cooling chamber, the outer peripheral wall of the clipping section is matched with the inner peripheral wall of the fixing frame, and the clipping section The outer peripheral wall of the device is also provided with a card slot which is matched with the snap-fit, so as to be snap-connected with the fixing frame.

Further, the refrigerator also includes:

The air return hood is arranged at the front of the cooling chamber, and is provided with at least one front air return port connecting the cooling chamber and the freezing chamber. The two sides of the air return hood are respectively provided with side clip structures ;

The side of the fixing member facing the cooling chamber is provided with a matching structure matched with the side clamping structure, so as to clamp and limit the air return cover.

In the refrigerator of the present invention, the air is returned from the side of the box body, the cooling chamber of the refrigerator is arranged at the bottom of the bottom inner pot, the upper inner pot is located above the bottom inner pot, and the front parts of the two side walls of the upper inner pot are respectively provided with The air outlet, the two side wall return air ducts are respectively located outside the bottom liner, and each side wall return air duct is provided with a connection port connected to the air outlet, and the lower end is connected with the side air return port on the side Therefore, the return air flow in the upper liner can flow into the cooling chamber at the lower part of the refrigerator through the side wall return air duct to continue heat exchange with the evaporator to form a circulating air flow.

Further, in the refrigerator of the present invention that returns air from the side of the box body, the side air return port is closer to the front of the box body than the air outlet of the first upper inner liner and the second upper inner liner, so that the upper inner tank is closer to the front of the box. The return air flow can be directly discharged to the front of the evaporator, which prolongs the contact time between the return air flow entering the cooling chamber and the evaporator, ensuring that the evaporator can fully cool the return air flow and ensure the refrigeration of the refrigerator. Effect.

Further, in the refrigerator of the present invention that returns air from the side of the box, the section of the side wall return air duct extending downward from the first upper inner liner and the bottom liner is gradually bent forward, so as to avoid the first upper inner liner. The space on the outer side wall just below the air outlet of the bladder can be used to set the fixed terminals of the first upper inner bladder; and the side wall return air duct can also be extended in a straight line to the side return after bending forward at the air outlet. At the air outlet, while ensuring that the return air flow can be discharged into the front of the cooling chamber, it can also make the side wall return air duct neat and beautiful.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a refrigerator viewed from another perspective according to an embodiment of the present invention, in which the outer casing and the thermal insulation layer are hidden;

3 is a cross-sectional view of a refrigerator according to an embodiment of the present invention, wherein the upper inner pot is hidden;

4 is an exploded view of a refrigerator according to an embodiment of the present invention, wherein the second upper inner container is hidden;

5 is a front view of the positional relationship between the first side wall return air duct and the bottom inner bladder, the first upper inner bladder and the second upper inner bladder in a refrigerator according to an embodiment of the present invention;

6 is a left side view of the positional relationship between the first side wall return air duct and the bottom liner, the first upper liner and the second upper liner in a refrigerator according to an embodiment of the present invention;

7 is a schematic diagram of a lower end nozzle and a fixing member of a first side wall return air duct in a refrigerator according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a return air hood in a refrigerator according to an embodiment of the present invention.

detailed description

In the description of this embodiment, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", The orientation or placement relationship indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "depth", etc. is based on the orientation of the refrigerator under normal use as a reference, and refer to the appendix The orientation or positional relationship shown in the figure can be determined, for example, "front" indicating orientation refers to the side of the refrigerator facing the user. This is only to facilitate the description of the present invention and to simplify the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention.

Referring to FIG. 1 , the refrigerator 1 of this embodiment may generally include a box body 10 , and the box body 10 may include an outer shell, an inner tank, a heat insulation layer, and other accessories. The casing is the outer structure of the refrigerator 1 and protects the entire refrigerator 1 . In order to isolate the heat conduction with the outside world, a heat insulating layer is added between the outer shell and the inner tank of the box body 10 , and the heat insulating layer is generally formed by a foaming process. There can be one or more inner liner, which can be arbitrarily divided into refrigerating inner liner, temperature-changing inner liner, freezing inner liner, etc. according to the function. In this embodiment, the inner container at least includes a bottom inner container 110, and the bottom inner container 110 can generally be a frozen inner container.

Referring to FIGS. 3 and 4 , a cooling chamber 140 is provided at the bottom of the bottom inner pot 110 of the refrigerator 1 of the present embodiment, and an evaporator 220 is arranged in the cooling chamber 140 , and the evaporator 220 provides cooling capacity for the refrigerator 1 . Specifically, an evaporator upper cover 210 is provided below the bottom inner pot 110 , and the evaporator upper cover 210 is laterally arranged in the bottom inner pot 110 to define the bottom inner pot 110 to define the cooling chamber 140 and the freezer above the cooling chamber 140 . Room 160.

That is, the evaporator 220 in this embodiment is located below the bottom inner container 110, and this arrangement can avoid the evaporator in the conventional refrigerator occupying the rear space of the freezer compartment, thereby reducing the depth of the freezer compartment, especially for side-to-side doors. For a refrigerator 1 , when the lateral size of the freezer is small, it is particularly important to increase the depth of the freezer, thereby improving the space utilization rate of the refrigerator 1 and facilitating the storage of bulky and difficult-to-separate items.

In addition, in traditional refrigerators, the freezer compartment at the bottom is located at a relatively low position, and the user needs to bend or squat down greatly to pick up and place items in the freezer compartment, which is inconvenient for users, especially for the elderly. In this embodiment, since the cooling chamber 140 occupies the space below the bottom liner 110 , the height of the freezing chamber 160 above the cooling chamber 140 is raised, and the bending degree of the user when picking and placing items in the freezing chamber 160 is reduced. , which can improve the user experience.

Referring to FIG. 3 , in an embodiment, the evaporator 220 may be in the shape of a flat rectangular parallelepiped as a whole, which is arranged at the front of the cooling chamber 140 and is inclined in the cooling chamber 140 . This method breaks through the technical shackles of the existing technology that reduce the depth dimension and need to place the evaporator horizontally. Although the oblique placement of the flat rectangular parallelepiped evaporator 220 will lead to an increase in the length in the front and rear directions, the oblique placement of the evaporator 220 makes the arrangement of other components in the cooling chamber 140 more reasonable, and the actual air flow field analysis confirms that the air circulation efficiency is also higher, and the drainage Also more comfortable. The oblique arrangement of the evaporator 220 is one of the main technical improvements made in this embodiment. In some specific embodiments, the inclination angle range of the evaporator 220 is set to 7° to 8°, for example, it can be set to 7°, 7.5°, 8°, preferably 7.5°.

Referring to FIG. 3 , in this embodiment, the refrigerator 1 may further include an air supply assembly, and the air supply assembly is disposed behind the evaporator 220 . The air supply assembly may include a centrifugal fan 250 and an air supply air duct 150 . The centrifugal fan 250 is disposed obliquely behind the evaporator 220, and its air suction port faces upward and forward, and is configured to promote the formation of a refrigerating airflow sent to the freezing chamber 160 through the evaporator 220; the front end of the centrifugal fan 250 reaches the level of the evaporator 220 The ratio of the distance to the depth dimension of the box body 10 in the front-rear direction is less than 4.5%, for example, set to 4.3%.

Referring to FIG. 3 , the refrigerator 1 may further include an air duct back panel 240 . The air duct back panel 240 is disposed in front of the rear wall of the bottom inner pot 110 , and may be substantially parallel to the rear wall of the bottom inner pot 110 , so as to be in line with the bottom inner pot 110 . The rear walls of the bladder 110 together define an air supply air duct 150 . In addition, the air duct back plate 240 is provided with at least one air supply port 242 , and the air supply port 242 is used to communicate with the air supply air duct 150 and the freezer compartment 160 . Since the air supply air duct 150 communicates with the cooling chamber 140, and the evaporator upper cover 210 serves as a partition of the cooling chamber 140, the air duct back plate 240 can abut against the evaporator upper cover 210 to seal the cooling chamber 140 and the role of the gap between the air supply duct 150.

Referring to FIGS. 3 and 4 , the refrigerator 1 may further include a return air cover 230 . The return air cover 230 is disposed at the front of the cooling chamber 140 and is provided with at least one front air return port 232 connecting the cooling chamber 140 and the freezing chamber 160 .

The evaporator 220 in the cooling chamber 140 exchanges heat with the surrounding air to reduce its temperature to form a cooling airflow. With the help of the centrifugal fan 250, the cooling airflow is discharged from the cooling chamber 140 to the air supply air duct 150, and then from the air duct. The air supply port 242 on the back panel 240 enters the freezer compartment 160 to exchange heat with the air in the freezer compartment 160 to reduce the temperature of the freezer compartment 160 . The chamber 140 continues to exchange heat with the evaporator 220, thereby forming a circulating airflow path.

Referring to FIG. 2 and FIG. 4 , in some embodiments of the present invention, the side walls of the cooling chamber 140 are respectively provided with side air return ports 112 in the area in front of the evaporator 220 . Since the cooling chamber 140 is defined by the bottom inner pot 110 , the two side walls of the cooling chamber 140 are the left and right side walls of the bottom inner pot 110 , and the side air return ports 112 are also opened on the left and right side walls of the bottom inner pot 110 . .

Referring to FIGS. 1 to 6 , the refrigerator 1 may further include a plurality of upper inner bladders and two side wall return air ducts, and the multiple upper inner bladders are arranged in sequence above the bottom inner bladder 110 , and two upper inner bladders are arranged in sequence above the bottom inner bladder 110 . The front parts of the side walls are respectively provided with air exhaust ports; the two side wall return air ducts are respectively located on the outside of the bottom inner liner and one side side wall of the multiple upper inner liner, and each side wall return air duct is located in one of the side walls. A connection port connected to the exhaust port is set at the corresponding position of the exhaust port of each upper inner tank on the side, and the lower end is connected with the side air return port 112 of the side, so as to connect the return air flow of the multiple upper inner tank. The cooling chamber 140 is introduced.

In this embodiment, each upper liner is configured independently of the bottom liner 110, so that the upper liner no longer occupies the space of the bottom liner 110, and the volume of the freezing chamber 160 defined by the bottom liner 110 can be increased. .

The interior of each upper liner also defines an upper air supply air duct (not shown in the figure) that communicates with the air supply air duct 150 of the bottom inner liner 110 . It can enter the upper air supply air duct, and then the cooling air can be discharged into the upper inner tank through the upper air supply air channel, and exchange heat with the air in the upper inner tank to reduce the temperature of the upper inner tank. Since the cooling chamber 140 of the refrigerator 1 is located at the bottom of the bottom inner tank 110 , that is, the bottom of the refrigerator 1 , the return air in the upper inner tank is discharged into the cooling chamber 140 through the side wall return air duct, and is replaced with the evaporator 220 Thermal cooling to create a circulating airflow.

The side air return port 112 can be adjacent to the front end of the side wall of the cooling chamber 140 where it is located, so as to introduce the return air flow of the upper inner liner into the front end of the cooling chamber 140 from the front of the side of the cooling chamber 140 to extend the return air entering the cooling chamber 140 . The path of the air flow in the process of passing through the evaporator 220 ensures that the evaporator 220 can sufficiently cool the return air flow, thereby ensuring the cooling effect of the refrigerator 1 .

Referring to FIG. 1 to FIG. 6 , the upper inner container of this embodiment may include a first upper inner container 120 located above the bottom inner container and a second upper inner container 130 located above the first upper inner container 120, wherein the first upper inner container 130 The interior of the inner container 120 can be divided into two storage areas, left and right, and the second upper inner container 130 is located above the first upper inner container 120 . In some preferred embodiments, the two storage areas of the first upper inner container 120 may be configured as temperature-changing chambers, for example, temperature-changing drawers are arranged respectively. The inner space of the second upper inner pot 130 may be configured as a refrigerator compartment. Specifically, as known to those skilled in the art, the temperature in the refrigerating chamber can also be set between 2°C and 10°C, preferably between 4°C and 7°C; °C. The optimal storage temperature for different types of items is different, and the suitable storage locations are also different. For example, fruit and vegetable food is suitable for storage in the refrigerator.

Referring to FIGS. 2 to 4 , in this embodiment, the second upper inner pot 130 , the first upper inner pot 120 and the bottom inner pot 110 are arranged in order along the height direction, and the left and right side walls of the first upper inner pot 120 are arranged on the left and right side walls. There is a first air outlet 122 , and second air outlets 132 are respectively provided on the left and right side walls of the second upper inner pot 130 .

The two side wall return air ducts may include a first side wall return air duct 310 and a second side wall return air duct 320 located on the left and right sides of the bottom liner 110, and the first side wall return air duct 310 and the second side wall return air duct 310 The return air ducts 320 are symmetrically arranged, and the following description will be given by taking the first side wall return air duct 310 as an example.

The first side wall return air duct 310 has a lower end pipe port 312 connected with the side return air port 112 of the bottom liner 110 , a middle pipe port 314 connected with the first air outlet port 122 , and a second air outlet port 132 . Upper nozzle 316. After the above-mentioned exhaust ports are correspondingly connected to the connection ports, the return air flow of the second upper inner pot 130 and the first upper inner pot 120 can flow back into the cooling chamber 140 through the first side wall return air duct 310, and continue to communicate with the evaporator. 220 performs heat exchange, so as to realize that the inside of the second upper inner pot 130 and the first upper inner pot 120 respectively form a circulating refrigerating airflow.

In some embodiments of the present invention, a controllable damper (not shown in the figure) for controlling the opening and closing of each connection port may also be provided at each of the above-mentioned connection ports. For example, the controllable damper may be configured to return the first side wall to the All the connection ports of the air duct 310 and the second side wall return air duct 320 are opened at the same time, so that the refrigerating room and the changing room share one side wall return air duct, and the controllable air door can also be configured to be open in the second upper part The connection port at the bladder 130 and the connection port at the first upper inner bladder 120 are used to realize that the return air flow of the refrigerating chamber and the changing chamber can respectively return to the cooling chamber 140 .

In some embodiments of the present invention, the distances between the side wall return air ducts and the plurality of upper inner bladders and bottom inner bladders 110 are all smaller than a predetermined distance value.

In this embodiment, the first side wall return air duct 310 and the second side wall return air duct 320 both extend downward from the second air outlet 132 located in the second upper inner container 130, in order to make the entire box body The structure of 10 is more compact and stable. When the first side wall return air duct 310 extends downward, a predetermined distance is maintained between the first upper inner container 120 and the bottom inner container 110 . Similarly, when the second side wall return air duct 320 extends downward, a predetermined distance is also maintained between the first upper inner container 120 and the bottom inner container 110 . Preferably, the distances between the first side wall air return duct 310 and the first upper liner 120 and the bottom liner 110 are kept the same, and the second side wall return duct 320 is the same as the first upper liner 120 and the bottom liner 110 The distances between them are kept the same, and the above-mentioned distances between the left and right are also kept the same, so that the box body 10 is symmetrical and beautiful.

The above-mentioned set spacing value can also be configured to any value within the range of 5mm to 50mm, for example, 5mm, 10mm, 40mm, 50mm, etc., to ensure a compact and stable structure between the side wall return air duct and the inner tank.

Referring to FIG. 5 , in some embodiments of the present invention, the lateral centers of the first upper inner pot 120 , the second upper inner pot 130 and the bottom inner pot 110 are in the same vertical plane. That is to say, the first upper inner pot 120 , the second upper inner pot 130 and the bottom inner pot 110 are in a symmetrical state on the lateral plane, and the axis of symmetry may be the middle position of the first upper inner pot 120 .

Further, the lateral width of the second upper inner container 130 is larger than that of the first upper inner container 120 . Typically, the temperature in the refrigerator compartment is lower and the thickness of the insulation required is relatively thin. In order to increase the volume, the above dimension setting can make the space of the refrigerating chamber defined by the second upper inner container 130 larger than the space of the changing chamber, so as to meet the user's demand for the space for storing food.

Further, the section of the side wall return air duct extending downward from the second upper inner pot 130 to the first upper inner pot 120 is gradually curved toward the middle of the refrigerator 1 to ensure that the side wall return air duct reaches the second upper inner pot 130 . The distance is equal to the distance from the side wall return air duct to the first upper inner container 120 .

In this embodiment, the lateral width of the second upper inner container 130 is larger than that of the first upper inner container 120 , and the lateral centers of the second upper inner container 130 and the bottom inner container 110 are in the same vertical plane. That is, the two side walls of the first upper inner pot 120 are inwardly concave relative to the second upper inner pot 130 and the bottom inner pot 110 . At this time, the first side wall return air duct 310 is concave to the right at the position corresponding to the first upper inner container 120 , and the second side wall return air duct 320 is also concave to the left at the position corresponding to the first upper inner container 120 . In order to ensure that the distance between the side wall return air duct and the upper liner remains the same.

Referring to FIGS. 4 and 6 , in some embodiments of the present invention, the air outlets of the first upper inner container 120 and the second upper inner container 130 are on the same straight line along the front and rear depth directions of the refrigerator 1 , and are laterally closed to each other. The air outlet 112 is closer to the front of the box body 10 than the air outlet of the first upper inner pot 120 and the second upper inner pot 130 . The section of the side wall return air duct extending downward from the first upper inner liner 120 to the bottom inner liner 110 is gradually bent forward, so that the section of the side wall return air duct located outside the bottom inner liner 110 is vertically arranged.

In this embodiment, since the distance between the side wall return air duct and the inner pot is relatively short, it conflicts with the positions of the fixed terminals or other parts on the inner pot, and further reasonable avoidance design is required. Specifically, the first side wall return air duct 310 extends downward from the second air outlet 132 to the first air outlet 122, and then bends forward from the first air outlet 122 to avoid exiting the first air outlet 122. The space on the outer side wall just below the air outlet 122 can be used to set the fixed terminals of the first upper inner container 120 .

In addition, in the above embodiment, in order to extend the contact path between the return air flow and the evaporator 220 , the position of the side return air port 112 is designed on the front side of the bottom inner tank 110 . Further, in this embodiment, after the first side wall return air duct 310 is bent and extended forward at the first air outlet 122 , it can also extend straight to the side return air outlet 112 . Moreover, the inventor found through experiments that, compared with the linear sidewall return air duct, the above-mentioned optimized design scheme does not have a greater impact on the flow characteristics of the return air flow, and its technical effect has also been verified by trial products.

Referring to FIGS. 4 to 7 , in some embodiments of the present invention, the side air return port 112 is further provided with a fixing member 400 , and the fixing member 400 is used to fix the lower end nozzle 312 of the side wall return air duct.

Specifically, the lower end pipe opening 312 of the side wall return air duct in this embodiment is bent from the side return air opening 112 of the bottom inner container 110 and extends into the cooling chamber 140 , and the fixing member 400 is fixedly arranged on the side wall of the bottom inner container 110 . In addition, a fixing frame 410 is opened at a position opposite to the side air return port 112, and a plurality of first buckles 412 are arranged on the inner circumference of the fixing frame 410; In the clamping segment 3121, the outer peripheral wall of the clamping segment 3121 is adapted to the inner peripheral wall of the fixing frame 410, and the outer peripheral wall of the clamping segment 3121 is also provided with a first clamping slot 3121a that cooperates with the first buckle 412, so that Then, the lower end nozzle 312 of the side wall return air duct can be connected with the fixing member 400 , that is, with the side wall of the bottom inner container 110 .

Referring to FIGS. 7 and 8 , further, two sides of the air return cover 230 are respectively provided with side clip structures, and the side clip structures include guide ribs 234 and second hooks 236 . The guide rib 234 protrudes from the side wall of the return air cover 230 and extends vertically. The second card slot 430 to which the hook 236 is locked is used to connect the side wall of the air return hood 230 with the lower end nozzle 312 of the side wall return air duct through the fixing member 400 to ensure the air tightness of the return air flow. .

By now, those skilled in the art will recognize that although various exemplary embodiments of the present invention have been shown and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A refrigerator that returns air from the side of a box body, comprising:

a bottom inner tank, the bottom of which is provided with a cooling chamber for arranging the evaporator of the refrigerator, and the side walls on both sides of the cooling chamber are respectively provided with side air return ports in the area in front of the evaporator;

A plurality of upper inner pots are arranged in sequence above the bottom inner pot, and the front parts of the side walls on both sides of each of the upper inner pots are respectively provided with air exhaust ports;

Two side wall return air ducts are respectively located outside the bottom inner liner and one side wall of the plurality of upper inner liner, and each of the side wall return air ducts is on each of the side walls on which it is located. A connection port connected to the air outlet is provided at the corresponding position of the air outlet of the upper inner liner, and the lower end is connected with the side return air outlet of the side, so as to introduce the return air flow of the plurality of upper inner liner. the cooling chamber.
The refrigerator of claim 1, wherein

The distances between the side wall return air ducts and the plurality of upper inner liner and the bottom inner liner are all smaller than a set spacing value.
The refrigerator of claim 2, wherein

The upper liner includes a first upper liner located above the bottom liner and a second upper liner located above the first upper liner, wherein the first upper liner, the second upper liner The lateral centers of the upper inner pot and the bottom inner pot are in the same vertical plane.
The refrigerator of claim 3, wherein

The space above the cooling chamber of the bottom liner is configured as a freezing chamber;

The inner space of the first upper inner liner is configured as a greenhouse;

The inner space of the second upper inner pot is configured as a refrigerator compartment, and

The lateral width of the second upper inner pot is larger than that of the first upper inner pot.
The refrigerator of claim 4, wherein

The section of the side wall return air duct extending downward from the second upper liner and the first upper liner is gradually curved toward the middle of the refrigerator, so as to ensure that the side wall return duct reaches the first upper liner. The distance between the two upper inner bladders is equal to the distance from the side wall return air duct to the first upper inner bladder.
The refrigerator of claim 4, wherein

The exhaust ports of the first upper inner pot and the second upper inner pot are on the same line along the front and rear depth directions of the refrigerator, and the side return air outlet is compared with the first upper inner pot and the same line. The air outlet of the second upper inner tank is closer to the front of the box.
The refrigerator of claim 6, wherein

The section of the side wall return air duct extending downward from the first upper liner and the bottom liner is gradually bent forward, so that the side wall return duct is located at the section outside the bottom liner Set up vertically.
The refrigerator of claim 4, wherein

The side air return port is also provided with a fixing piece, and the fixing piece is used for fixing the lower end nozzle of the side wall return air duct.
The refrigerator of claim 8, wherein

The fixing member is fixedly arranged on the inner side wall of the bottom inner container, and a fixing frame is opened at the opposite position of the side return air outlet, and the inner periphery of the fixing frame is provided with a plurality of buckles;

The lower end nozzle of the side wall return air duct has a clipping section extending toward the cooling chamber, the outer peripheral wall of the clipping section is matched with the inner peripheral wall of the fixing frame, and the clipping section The outer peripheral wall of the device is also provided with a card slot which is matched with the snap-fit, so as to be snap-connected with the fixing frame.
The refrigerator for returning air from the side of the box body according to claim 8, further comprising:

The air return hood is arranged at the front of the cooling chamber, and at least one front air return port connecting the cooling chamber and the freezing chamber is opened on it, and the two sides of the air return hood are respectively provided with side clip structures ;

The side of the fixing member facing the cooling chamber is provided with a matching structure matched with the side clamping structure, so as to clamp and limit the air return cover.