CN114076451B - Refrigerator capable of returning air from side part of refrigerator body - Google Patents

Abstract

The invention provides a refrigerator for returning air from the side part of a box body, which comprises a bottom inner container, a plurality of upper inner containers and two side wall air return channels, wherein the bottom of the bottom inner container is provided with a cooling chamber, the side walls of the two sides of the cooling chamber are respectively provided with a side air return inlet, the upper inner containers are sequentially arranged above the bottom inner container, the front parts of the side walls of the two sides of each upper inner container are respectively provided with an air outlet, the two side wall air return channels are respectively positioned outside the side walls of the bottom inner container and one side of the upper inner containers, each side wall air return channel is provided with a connecting port, and the lower end of each side wall air return channel is connected with the side air return inlet, so that the return air flow of the upper inner containers is introduced into the cooling chamber. The refrigerator can lead the return air flow of the refrigerating chamber and the temperature changing chamber into the cooling chamber, cancels an independent air supply system of the refrigerating chamber, reduces the production cost of the refrigerator, and has reasonable arrangement of the side wall return air ducts, so that the box body of the refrigerator is more stable and beautiful.

Description

Refrigerator capable of returning air from side part of refrigerator body

Technical Field

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

Background

In the refrigerator with the evaporator arranged at the bottom in the prior art, a side wall air return pipe is mainly used for guiding return air flow of a temperature changing chamber into a cooling chamber positioned at the lowest part of the refrigerator, and a refrigerating chamber positioned at the highest part of the refrigerator adopts an independent air supply system. The design has certain defects, for example, the side wall air return pipe can only ensure variable-temperature air return and has certain limitation, and the side wall air return pipe is a linear pipeline and easily collides with the fixed terminal position of the liner, so that inconvenience is caused to the assembly process.

Disclosure of Invention

It is an object of the present invention to overcome at least one of the disadvantages of the prior art and to provide a refrigerator with air return from the side of the cabinet.

A further object of the present invention is to achieve the introduction of return air streams from both the refrigeration compartment and the temperature change compartment into the cooling compartment.

Another further object of the invention is to optimize the profile of the side return ducts so that their arrangement is more rational.

In particular, the present invention provides a refrigerator which returns air from the side of the cabinet, comprising:

the bottom of the bottom liner is provided with a cooling chamber for arranging an evaporator of the refrigerator, and side air return openings are respectively formed in the side walls of two sides of the cooling chamber in the area in front of the evaporator;

the upper inner containers are sequentially arranged above the bottom inner container, and the front parts of the side walls of two sides of each upper inner container are respectively provided with an air outlet;

and the two side wall air return channels are respectively positioned outside the side walls of the bottom inner container and the upper inner containers, each side wall air return channel is provided with a connecting port connected with the air outlet at the corresponding position of the air outlet of each upper inner container on one side where the side wall air return channel is positioned, and is connected with the side air return port on the side at the lower end, so that a plurality of return air flows of the upper inner containers are introduced into the cooling chamber.

Furthermore, the distance between the side wall air return duct and the upper inner containers and the distance between the side wall air return duct and the bottom inner containers are smaller than a set distance value.

Further, the upper inner container comprises a first upper inner container located above the bottom inner container and a second upper inner container located above the first upper inner container, wherein the transverse centers of the first upper inner container, the second upper inner container and the bottom inner container are located in the same vertical plane.

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

the inner space of the first upper inner container is configured into a temperature-changing chamber;

the inner space of the second upper inner container is configured as a refrigerating chamber, and

the transverse width of the second upper inner container is larger than that of the first upper inner container.

Further, the section of the side wall air return duct extending downwards from the second upper liner to the first upper liner is gradually bent towards the middle of the refrigerator, so that the distance between the side wall air return duct and the second upper liner is equal to the distance between the side wall air return duct and the first upper liner.

Furthermore, the air outlets of the first upper inner container and the second upper inner container are positioned on the same straight line along the front and rear depth directions of the refrigerator, and the side air return inlet is closer to the front part of the refrigerator body than the air outlets of the first upper inner container and the second upper inner container.

Further, the section of the side wall air return duct extending downwards from the first upper liner to the bottom liner is gradually bent forwards, so that the section of the side wall air return duct located outside the bottom liner is vertically arranged.

Furthermore, a fixing piece is further arranged at the side air return inlet and used for fixing a lower end pipe orifice of the side wall air return channel.

Furthermore, the fixing piece is fixedly arranged on the inner side wall of the bottom inner container, a fixing frame is arranged at a position opposite to the side air return inlet, and a plurality of buckles are arranged on the inner periphery of the fixing frame;

the lower extreme mouth of pipe in lateral wall return air duct has the orientation the joint section that the cooling chamber stretches out, the periphery wall of joint section with the interior week of fixed frame is the looks adaptation, and still be equipped with on the periphery wall of joint section with buckle complex draw-in groove, with fixed frame joint.

Further, the refrigerator further includes:

the air return cover is arranged at the front part of the cooling chamber, at least one front air return opening for communicating the cooling chamber with the freezing chamber is formed in the air return cover, and two sides of the air return cover are respectively provided with a side clamping structure;

the mounting orientation one side of cooling chamber be provided with side joint structure matched with cooperation structure, it is right to carry out the joint spacingly for the return air cover.

In the refrigerator for returning air from the side part of the refrigerator body, the cooling chamber of the refrigerator is arranged at the bottom of the inner container at the bottom, the inner container at the upper part is positioned above the inner container at the bottom, the front parts of the side walls at the two sides of the inner container at the upper part are respectively provided with the air outlets, the two air return channels at the side walls are respectively positioned outside the inner container at the bottom, and each air return channel at the side wall is provided with the connecting port connected with the air outlet and is connected with the side air return inlet at the lower end, so that the air return flow in the inner container at the upper part can flow into the cooling chamber at the lower part of the refrigerator through the air return channels at the side walls to continuously exchange heat with the evaporator to form circulating air flow.

Furthermore, in the refrigerator for returning air from the side part of the refrigerator body, the side air return inlet is closer to the front part of the refrigerator body than the air outlets of the first upper inner container and the second upper inner container, so that the return air flow in the upper part can be directly discharged to the front part of the evaporator, the contact time of the return air flow entering the cooling chamber and the return air flow flowing through the evaporator is prolonged, the evaporator can be ensured to fully cool the return air flow, and the refrigerating effect of the refrigerator is ensured.

Furthermore, in the refrigerator for returning air from the side part of the refrigerator body, the section of the side wall air return channel extending downwards from the first upper liner to the bottom liner is gradually bent forwards, so that the space of the outer side wall right below the air outlet of the first upper liner can be avoided, and the side wall air return channel can be used for arranging a fixed terminal of the first upper liner; and the lateral wall return air duct can also extend to the lateral return air duct along a straight line after being bent and extended forwards at the air outlet, so that the lateral wall return air duct is tidy and attractive while the return air flow is ensured to be discharged into the front part of the cooling chamber.

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 thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view of a refrigerator according to one embodiment of the present invention;

FIG. 2 is a schematic view of a refrigerator according to one embodiment of the present invention, from another perspective, with the outer shell and the insulation layer concealed;

FIG. 3 is a sectional view of a refrigerator according to one embodiment of the present invention, in which an upper inner container is hidden;

fig. 4 is an exploded view of a refrigerator according to one embodiment of the present invention, in which a second upper inner container is hidden;

FIG. 5 is a front view of the positional relationship between the return air duct of the first sidewall and the bottom inner container, the first upper inner container and the second upper inner container in the refrigerator according to one embodiment of the present invention;

FIG. 6 is a left side view of the positional relationship between the return air duct of the first sidewall and the bottom inner container, the first upper inner container and the second upper inner container in the refrigerator according to one embodiment of the present invention;

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

fig. 8 is a schematic view of a return hood in a refrigerator according to an embodiment of the present invention.

Detailed Description

In the description of the present embodiment, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "depth", and the like indicate orientations or positional relationships that are based on the orientation in a normal use state of the refrigerator as a reference, and can be determined with reference to the orientations or positional relationships shown in the drawings, for example, "front" indicating the orientation refers to the side of the refrigerator facing the user. This is merely to facilitate description of the invention and to simplify the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated in a particular orientation, and thus should not be taken to be limiting of the invention.

Referring to fig. 1, the refrigerator 1 of the present embodiment generally includes a box body 10, and the box body 10 may include a casing, an inner container, a heat insulation layer, and other accessories. The outer case is an outer structure of the refrigerator 1, and protects the entire refrigerator 1. In order to insulate the heat conduction from the outside, a thermal insulation layer is provided between the outer shell and the inner container of the container 10, and the thermal insulation layer is generally formed by a foaming process. The number and the functions of the inner containers can be configured according to the use requirements of the refrigerator. In this embodiment, the inner container includes at least a bottom inner container 110, and the bottom inner container 110 can be a freezing inner container.

Referring to fig. 3 and 4, the bottom of the bottom inner container 110 of the refrigerator 1 of the present embodiment is provided with a cooling chamber 140, an evaporator 220 is disposed in the cooling chamber 140, and the evaporator 220 provides cooling capacity for the refrigerator 1. Specifically, an evaporator upper cover 210 is disposed below the bottom inner container 110, and the evaporator upper cover 210 is transversely disposed inside the bottom inner container 110 to define the bottom inner container 110 with a cooling chamber 140 and a freezing chamber 160 above the cooling chamber 140.

That is, the evaporator 220 in this embodiment is located below the bottom inner container 110, and this arrangement can avoid the depth of the freezing chamber from being reduced due to the evaporator occupying the rear space of the freezing chamber in the conventional refrigerator, and especially for the side-by-side combination refrigerator, it is important to increase the depth of the freezing chamber under the condition that the transverse size of the freezing chamber is originally small, so that the space utilization rate of the refrigerator 1 is improved, and the storage of articles which have large volume and are not easy to separate is facilitated.

In addition, in traditional refrigerator, the freezer that is located the below is located the position lower, and the user need bend down or squat down by a wide margin and just can get the operation of putting article to this freezer, and the user of being inconvenient for uses, especially inconvenient old man uses. In this embodiment, the cooling chamber 140 occupies the space below the bottom inner container 110, so that the height of the freezing chamber 160 above the cooling chamber 140 is raised, and the stooping degree of the user when the user operates to pick and place articles in the freezing chamber 160 is reduced, thereby improving the use experience of the user.

Referring to fig. 3, in an embodiment, the evaporator 220 may have a flat rectangular parallelepiped shape as a whole, is disposed at the front of the cooling chamber 140, and is obliquely disposed in the cooling chamber 140. The mode breaks through the technical limitation that the depth size is reduced and the evaporator is required to be horizontally arranged in the prior art. Although the inclined placement of the flat cuboid evaporator 220 results in an increase in the length in the front-rear direction, the inclined placement thereof makes the arrangement of other components in the cooling chamber 140 more reasonable, and the actual airflow field analysis proves that the wind circulation efficiency is also higher and the drainage is also more smooth. The layout manner of the inclined arrangement of the evaporator 220 is one of the main technical improvements made by the present embodiment. In some specific embodiments, the inclination angle of the evaporator 220 is set to 7-8 °, for example, 7 °, 7.5 °, 8 °, and preferably 7.5 °.

Referring to fig. 3, in the present embodiment, the refrigerator 1 may further include an air supply assembly disposed behind the evaporator 220. The air supply assembly may include a centrifugal fan 250 and an air supply duct 150. Wherein the centrifugal fan 250 is disposed obliquely behind the evaporator 220 with its suction opening facing upward and forward and is configured to promote the formation of a flow of refrigerant air sent to the freezing chamber 160 via the evaporator 220; the horizontal distance from the front end of the centrifugal fan 250 to the evaporator 220 accounts for less than 4.5%, for example, 4.3% of the depth of the casing 10 in the front-rear direction.

Referring to fig. 3, the refrigerator 1 may further include an air duct back plate 240, and the air duct back plate 240 is disposed in front of the rear wall of the bottom inner container 110, and may be substantially parallel to the rear wall of the bottom inner container 110 to define the air supply duct 150 together with the rear wall of the bottom inner container 110. The duct back 240 is provided with at least one air supply outlet 242, and the air supply outlet 242 is used for communicating the air supply duct 150 and the freezing chamber 160. Since the air supply duct 150 communicates with the cooling chamber 140 and the evaporator top cover 210 serves as a partition of the cooling chamber 140, the duct back plate 240 can abut against the evaporator top cover 210 to seal the gap between the cooling chamber 140 and the air supply duct 150.

Referring to fig. 3 and 4, the refrigerator 1 may further include a return air cover 230, wherein the return air cover 230 is disposed at a front portion of the cooling compartment 140, and is provided with at least one front return air inlet 232 communicating the cooling compartment 140 and the freezing compartment 160.

The evaporator 220 in the cooling chamber 140 exchanges heat with the surrounding air to reduce the temperature thereof to form a cooling airflow, the cooling airflow is discharged from the cooling chamber 140 to the air supply duct 150 under the driving of the centrifugal fan 250, and then enters the freezing chamber 160 from the air supply opening 242 on the duct back plate 240 to exchange heat with the air in the freezing chamber 160 to reduce the temperature of the freezing chamber 160, after the cooling airflow exchanges heat, the cooling airflow can flow back to the cooling chamber 140 through the front air return opening 232 on the air return cover 230, and continuously exchanges heat with the evaporator 220, thereby forming a circulating airflow path.

Referring to fig. 2 and 4, in some embodiments of the present invention, the side walls of the cooling chamber 140 are respectively opened with side air inlets 112 in the region in front of the evaporator 220. Since the cooling chamber 140 is defined by the bottom inner container 110, two sidewalls of the cooling chamber 140 are the left and right sidewalls of the bottom inner container 110, and the side air return openings 112 are also opened on the left and right sidewalls of the bottom inner container 110.

Referring to fig. 1 to 6, the refrigerator 1 may further include a plurality of upper inner containers and two side wall air return ducts, the upper inner containers are sequentially arranged above the bottom inner container 110, and the front portions of the side walls on both sides of each upper inner container are respectively provided with an air outlet; the two side wall air return ducts are respectively positioned outside the side walls of the bottom inner container and one sides of the upper inner containers, a connecting port connected with the air outlet is arranged at the corresponding position of the air outlet of each upper inner container on one side of each side wall air return duct, the lower end of each side wall air return duct is connected with the side air return port 112 on the side, and therefore return air flow of the upper inner containers is led into the cooling chamber 140.

In the present embodiment, each upper liner is configured to be independent of the bottom liner 110 such that the upper liner no longer occupies the space of the bottom liner 110, increasing the volume of the freezer compartment 160 defined by the bottom liner 110.

An upper air supply duct (not shown in the figure) communicated with the air supply duct 150 of the bottom inner container 110 is further limited in each upper inner container, refrigerating air flow in the air supply duct 150 can enter the upper air supply duct under the urging of the centrifugal fan 250, and then the refrigerating air flow can be discharged into the upper inner container through the upper air supply duct and exchanges heat with air in the upper inner container, so that the temperature of the upper inner container is reduced. Since the cooling compartment 140 of the refrigerator 1 is located at the bottom of the bottom inner container 110, i.e., the lowest part of the refrigerator 1, the return air flow in the upper inner container is discharged into the cooling compartment 140 through the side wall return duct, and is cooled by heat exchange with the evaporator 220 to form a circulating air flow.

The side return air inlet 112 may be adjacent to the front end of the side wall of the cooling compartment 140, so as to introduce the return air flow of the upper inner container into the front end of the cooling compartment 140 from the front of the side portion of the cooling compartment 140, to extend the path of the return air flow entering the cooling compartment 140 in the process of flowing through the evaporator 220, to ensure that the evaporator 220 can sufficiently cool the return air flow, and to ensure the refrigeration effect of the refrigerator 1.

Referring to fig. 1 to 6, the upper liner of the present embodiment may include a first upper liner 120 located above the bottom liner and a second upper liner 130 located above the first upper liner 120, wherein the interior of the first upper liner 120 may be divided into two left and right storage regions, and the second upper liner 130 is located above the first upper liner 120. In some preferred embodiments, the two reservoir regions of the first upper liner 120 can be configured as temperature change chambers, for example, with temperature change drawers arranged separately. The inner space of the second upper inner container 130 may be configured as a refrigerating chamber. In particular, as is well known to those skilled in the art, the temperature inside the refrigerating compartment can also be set between 2 ℃ and 10 ℃, preferentially between 4 ℃ and 7 ℃; the temperature of the temperature-changing chamber can be adjusted to-18 ℃ to 8 ℃ at will. The optimum storage temperatures for different kinds of goods are different and the suitable storage locations are different, for example, for fruit and vegetable food in a cold storage room.

Referring to fig. 2 to 4, in the present embodiment, the second upper liner 130, the first upper liner 120 and the bottom liner 110 are sequentially arranged along the height direction, the first air outlet 122 is disposed on the left and right side walls of the first upper liner 120, and the second air outlet 132 is disposed on the left and right side walls of the second upper liner 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 at 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 320 are symmetrically disposed, and the first side-wall return air duct 310 is taken as an example for description below.

The first sidewall return air duct 310 has a lower nozzle 312 connected to the side return air inlet 112 of the bottom liner 110, a middle nozzle 314 connected to the first exhaust opening 122, and an upper nozzle 316 connected to the second exhaust opening 132. After the air outlets are correspondingly connected to the connectors, the return air flow of the second upper liner 130 and the first upper liner 120 may flow back into the cooling chamber 140 through the first side wall return air duct 310, and continuously exchange heat with the evaporator 220, so as to form a circulating refrigeration air flow inside the second upper liner 130 and the first upper liner 120, respectively.

In some embodiments of the present invention, a controllable damper (not shown in the drawings) may be further disposed at each of the connection ports to control opening and closing of each connection port, for example, the controllable damper may be configured to simultaneously open all the connection ports of the first side-wall return air duct 310 and the second side-wall return air duct 320, so that the refrigerating compartment and the temperature-changing compartment share one side-wall return air duct, and the controllable damper may be further configured to controllably open the connection port at the second upper inner container 130 and the connection port at the first upper inner container 120, so that return air flows of the refrigerating compartment and the temperature-changing compartment may respectively flow back to the cooling compartment 140.

In some embodiments of the present invention, the distance between the sidewall return air duct and the upper inner containers and the bottom inner container 110 is smaller than a predetermined distance value.

In the present 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 of the second upper liner 130, and in order to make the structure of the whole cabinet 10 more compact and stable, a set distance value is maintained between the first side-wall return air duct 310 and the first upper liner 120 and the bottom liner 110 when the first side-wall return air duct 310 extends downward. Similarly, the second sidewall return air duct 320 maintains a predetermined distance from the first upper liner 120 and the bottom liner 110 when extending downward. Preferably, the distance between the first side return air duct 310 and the first upper inner container 120 and the distance between the second side return air duct 320 and the first upper inner container 120 and the distance between the first side return air duct and the second side return air duct 110 are the same, and the distances between the first side return air duct and the second side return air duct are the same, so that the cabinet 10 is symmetrical and beautiful.

The set distance value can be configured to any value within the range of 5 mm-50 mm, for example, 5mm, 10mm, 40mm, 50mm and the like, so as to ensure the compactness and stable structure between the side wall air return duct and the inner container.

Referring to fig. 5, in some embodiments of the present invention, the lateral centers of the first upper bladder 120, the second upper bladder 130, and the bottom bladder 110 are in the same vertical plane. That is, the first upper bladder 120, the second upper bladder 130, and the bottom bladder 110 are symmetrical in the transverse plane, and the symmetry axis can be the middle of the first upper bladder 120.

Further, the second upper bladder 130 has a lateral width greater than the first upper bladder 120. Typically, the temperature of the refrigerated compartment is relatively low and the insulation required is relatively thin. In order to increase the volume, the above-mentioned size setting may make the space of the refrigerating chamber defined by the second upper inner container 130 larger than the space of the temperature-changing chamber to meet the user's demand for the space for storing food.

Further, the section of the side wall air return duct extending downward from the second upper inner container 130 to the first upper inner container 120 is gradually bent toward the middle of the refrigerator 1, so as to ensure that the distance between the side wall air return duct and the second upper inner container 130 is equal to the distance between the side wall air return duct and the first upper inner container 120.

In this embodiment, the lateral width of the second upper bladder 130 is greater than the first upper bladder 120, and the lateral centers of the second upper bladder 130 and the bottom bladder 110 are in the same vertical plane. That is, both sidewalls of the first upper liner 120 are recessed inwardly relative to the second upper liner 130 and the bottom liner 110. At this time, the first sidewall return air duct 310 is recessed rightward at a position corresponding to the first upper liner 120, and the second sidewall return air duct 320 is also recessed leftward at a position corresponding to the first upper liner 120, so as to ensure that the distance between the sidewall return air duct and the upper liner is kept consistent.

Referring to fig. 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 aligned along the front and rear depth directions of the refrigerator 1, and the side air return openings 112 are closer to the front of the cabinet 10 than the air outlets of the first upper inner container 120 and the second upper inner container 130. The section of the sidewall return air duct extending downward from the first upper liner 120 to the bottom liner 110 is gradually bent forward, so that the section of the sidewall return air duct located outside the bottom liner 110 is vertically disposed.

In this embodiment, because the distance between the side wall return air duct and the inner container is short, the side wall return air duct conflicts with the position of the fixed terminal or other parts on the inner container, and a further reasonable avoidance design is required. Specifically, the first sidewall 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 the outer sidewall space right below the first air outlet 122, which can be used for setting the fixed terminal of the first upper liner 120.

In addition, in the above embodiment, in order to extend the contact path of the return air flow with the evaporator 220, the position of the side return air inlet 112 is designed at the front side of the bottom inner bag 110. Further, in the present embodiment, the first sidewall return air duct 310 may also extend straight to the side return air opening 112 after bending forward at the first exhaust opening 122. The inventor finds through experiments that compared with a linear side wall return air duct, the optimized design scheme does not have great influence on the flow characteristic of return air flow, and the technical effect of the optimized design scheme is verified by trial-manufactured products.

Referring to fig. 4 to fig. 7, in some embodiments of the present invention, a fixing member 400 is further disposed at the side air return opening 112, and the fixing member 400 is used for fixing the lower nozzle 312 of the side wall air return duct.

Specifically, the lower end nozzle 312 of the sidewall air return duct of the present embodiment is bent from the side air return opening 112 of the bottom inner container 110 and extends into the cooling chamber 140, the fixing member 400 is fixedly disposed on the sidewall of the bottom inner container 110, and a fixing frame 410 is disposed at a position opposite to the side air return opening 112, and the inner periphery of the fixing frame 410 is provided with a plurality of first fasteners 412; the lower end nozzle 312 of the side wall air return duct has a clamping section 3121 extending toward the cooling chamber 140, the outer peripheral wall of the clamping section 3121 is matched with the inner peripheral wall of the fixing frame 410, and a first clamping groove 3121a matched with the first clamping buckle 412 is further provided on the outer peripheral wall of the clamping section 3121, so that the lower end nozzle 312 of the side wall air return duct can be connected with the fixing member 400, that is, fixed with the side wall of the bottom inner container 110.

Referring to fig. 7 and 8, further, side clamping structures are respectively disposed on two sides of the return air cover 230, and each side clamping structure includes a guide rib 234 and a second clamping hook 236. The guiding rib 234 protrudes out of the side wall of the air return cover 230 and extends vertically, and a vertical groove 420 matched with the guiding rib 234 and a second clamping groove 430 clamped with the second clamping hook 236 are further arranged on one surface of the fixing piece 400 facing the air return cover 230, so that the side wall of the air return cover 230 is connected with the lower end nozzle 312 of the side wall air return duct through the fixing piece 400, and the air tightness of the return air flow is ensured.

Thus, it should be appreciated by those skilled in the art that while various exemplary embodiments of the invention have been shown and described in detail herein, many other variations or modifications which are consistent with the principles of this invention may be determined or derived directly from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (8)

1. A refrigerator that returns air from the side of a cabinet, comprising:

the bottom of the bottom liner is provided with a cooling chamber for arranging an evaporator of the refrigerator, and side air return openings are respectively formed in the side walls of two sides of the cooling chamber in the area in front of the evaporator;

the upper inner containers are sequentially arranged above the bottom inner container, and the front parts of the side walls at two sides of each upper inner container are respectively provided with an air outlet;

the two side wall air return channels are respectively positioned outside the side walls of the bottom inner container and one side of the upper inner containers, each side wall air return channel is provided with a connecting port connected with the air outlet at the position corresponding to the air outlet of each upper inner container on one side where the side wall air return channel is positioned, and the lower end of each side wall air return channel is connected with the side air return port on the side, so that the return air flow of the upper inner containers is introduced into the cooling chamber;

the upper inner container comprises a first upper inner container positioned above the bottom inner container and a second upper inner container positioned above the first upper inner container;

the air outlets of the first upper inner container and the second upper inner container are positioned on the same straight line along the front and back depth directions of the refrigerator, and the side air return inlet is closer to the front part of the refrigerator body than the air outlets of the first upper inner container and the second upper inner container;

the section of the side wall air return duct extending downwards from the first upper inner container to the bottom inner container is gradually bent forwards, so that the section of the side wall air return duct positioned outside the bottom inner container is vertically arranged.

2. The refrigerator for returning air from the side of the cabinet as claimed in claim 1, wherein the refrigerator for returning air from the cabinet side is constructed as follows

The distance between the side wall air return duct and the upper inner containers and the distance between the side wall air return duct and the bottom inner containers are smaller than a set distance value.

3. The refrigerator for returning air from the side of the cabinet as claimed in claim 2, wherein the refrigerator for returning air from the cabinet side is constructed as follows

The transverse centers of the first upper inner container, the second upper inner container and the bottom inner container are positioned in the same vertical plane.

4. The refrigerator for returning air from the side of the cabinet as claimed in claim 3, wherein the refrigerator for returning air from the cabinet side is constructed as claimed in claim 3

The space of the bottom inner container above the cooling chamber is configured into a freezing chamber;

the inner space of the first upper inner container is configured into a temperature-changing chamber;

the inner space of the second upper inner container is configured as a refrigerating chamber, and

the transverse width of the second upper inner container is larger than that of the first upper inner container.

5. The refrigerator for returning air from the side of the cabinet as claimed in claim 4, wherein the refrigerator for returning air from the cabinet side is constructed as follows

The section of the side wall air return duct extending downwards from the second upper inner container to the first upper inner container is gradually bent towards the middle of the refrigerator, so that the distance between the side wall air return duct and the second upper inner container is equal to the distance between the side wall air return duct and the first upper inner container.

6. The refrigerator for returning air from the side of the cabinet as claimed in claim 4, wherein the refrigerator for returning air from the cabinet side is constructed as claimed in claim 4

The side air return port is also provided with a fixing piece, and the fixing piece is used for fixing a lower end pipe orifice of the side wall air return channel.

7. The refrigerator for returning air from the side of the cabinet as claimed in claim 6, wherein the refrigerator for returning air from the cabinet side is constructed as follows

The fixing piece is fixedly arranged on the inner side wall of the bottom inner container, a fixing frame is arranged at a position opposite to the side air return inlet, and a plurality of buckles are arranged on the inner periphery of the fixing frame;

the lower extreme mouth of pipe in lateral wall return air duct has the orientation the joint section that the cooling chamber stretches out, the periphery wall of joint section with the interior week looks adaptation of fixed frame, and still be equipped with on the periphery wall of joint section with buckle complex draw-in groove, with fixed frame joint.

8. The refrigerator to return air from the side of the cabinet of claim 6, further comprising:

the air return cover is arranged at the front part of the cooling chamber, at least one front air return opening for communicating the cooling chamber with the freezing chamber is formed in the air return cover, and two sides of the air return cover are respectively provided with a side clamping structure;

the mounting orientation one side of cooling chamber be provided with side joint structure matched with cooperation structure, it is right to carry out the joint spacingly for the return air cover.

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