CN116294351A - Refrigerator - Google Patents

Abstract

The application relates to the technical field of refrigeration equipment and discloses a refrigerator. The refrigerator comprises: the inner container comprises a plurality of side walls and a bottom wall, the side walls and the bottom wall are jointly enclosed to form an inner space, wherein at least one side wall is provided with an air supply duct, the inner space comprises a storage cavity, the inner container is also provided with a refrigeration cavity, and air flows into the storage cavity through the air supply duct after flowing through the refrigeration cavity for heat exchange and then flows back into the refrigeration cavity through the storage cavity; the evaporator is positioned in the refrigerating cavity; the direct cooling evaporation tube is arranged on the side wall. The direct cooling evaporating pipe is arranged on the side wall, so that the side wall can be subjected to air cooling refrigeration through air outlet, the direct cooling evaporating pipe is also arranged, direct cooling refrigeration can be realized, the direct cooling evaporating pipe can solve the problem that the air outlet is uneven or the local temperature is too high, the temperature uniformity of the inner space can be increased, the cooling speed of the inner space is improved, and then the storage of articles in the refrigerator is guaranteed.

Description

Refrigerator

Technical Field

The application relates to the technical field of refrigeration equipment, for example, to a refrigerator.

Background

At present, most horizontal refrigerators in the market adopt a direct cooling refrigeration mode, and in the use process, as the times of opening and closing the door are increased, frost and even ice can be formed on the refrigerator liner, so that the defrosting problem is brought to a user.

The horizontal air-cooled refrigerator in the related art generally comprises a refrigerating cavity containing an evaporator, a fan and an air supply duct, and the fan can drive air flow to flow into a storage space of the refrigerator from the air supply duct after refrigerating through the evaporator, so that the refrigerating of the horizontal refrigerator can be realized, the frostless effect of the refrigerator can be realized, and the defrosting problem is solved.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the problems of overhigh local temperature, uneven air supply and the like exist in the horizontal air-cooled refrigerator in the related art, so that the temperature uniformity in the refrigerator can be influenced, and further the storage of articles in the refrigerator is influenced.

It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a refrigerator to improve the cooling rate in the refrigerator, improve the temperature homogeneity in the refrigerator, and then guarantee the article storage in the refrigerator.

Embodiments of the present disclosure provide a refrigerator including: the inner container comprises a plurality of side walls and a bottom wall, and the side walls and the bottom wall are jointly enclosed to form the inner space, wherein at least one side wall is provided with an air supply duct, the inner space comprises a storage cavity, the inner container is also provided with a refrigeration cavity, and air flows through the refrigeration cavity, flows into the storage cavity through the air supply duct after exchanging heat, and flows back into the refrigeration cavity through the storage cavity; the evaporator is positioned in the refrigerating cavity; and the direct cooling evaporation tube is arranged on the side wall.

Optionally, the direct cooling evaporation tube is arranged at one side of the side wall, which is away from the inner space; and/or the direct cooling evaporation tube comprises one or more evaporation tubes, and when the number of the evaporation tubes is multiple, the evaporation tubes are arranged in series or in parallel.

Optionally, the direct-cooling evaporation tube comprises: the first evaporating pipe is arranged along the extending direction of the air supply air duct, and the first evaporating pipe is matched with the air supply air duct.

Optionally, a plurality of air supply channels are arranged on one side wall, the plurality of air supply channels are sequentially arranged at intervals along the height direction of one side wall, and each air supply channel is provided with the first evaporation tube; and/or the air supply duct is positioned in the middle of the side wall and/or the upper part of the side wall, and the air supply duct is provided with the first evaporation pipe.

Optionally, the refrigeration chamber is equipped with the return air inlet, the return air inlet intercommunication the storing chamber with the refrigeration chamber, direct-cooling evaporating pipe includes: and the second evaporation tube corresponds to the refrigerating cavity so as to reduce the temperature around the refrigerating cavity.

Optionally, the plurality of side walls comprises: a first side wall connected to the first end of the bottom wall and extending upward; the second side wall is arranged opposite to the first side wall, is connected to the second end of the bottom wall and extends upwards; a third side wall connected between the first side wall and the second side wall, and connected to a third end of the bottom wall and extending upward; the refrigerator further includes: the return air apron, the return air apron with the diapire first lateral wall the second lateral wall with the third lateral wall encloses jointly and closes the refrigeration chamber, the second evaporating pipe is located the third lateral wall, just the height of second evaporating pipe is greater than the height of return air apron.

Optionally, the bottom wall part of the liner is raised upwards to form a step, and the lower part of the step is used for placing the compressor; the air return cover plate is located above the step, the air return cover plate and the step enclose together to form the refrigerating cavity, and the air return cover plate divides the inner space into the storage cavity and the refrigerating cavity, wherein the evaporator is located above the step.

Optionally, the direct-cooling evaporation tube is arranged in parallel or in series with the evaporation tube of the evaporator.

Optionally, the liner includes: the inner container body is sunken towards the direction deviating from the inner space to form an air supply groove; the air duct cover plate is covered on one side of the air supply groove facing the inner space and forms an air supply duct with the air supply groove, and is provided with a plurality of air supply openings which are sequentially arranged at intervals along the flowing direction of air flow in the air supply duct.

Optionally, the refrigerator further comprises a baffle rib, and the baffle rib is positioned in the air supply duct, and the extending direction of the baffle rib is intersected with the flowing direction of the air flow so that the air flow bypasses the baffle rib and flows; and/or, the refrigeration cavity, the air supply duct and the storage cavity form a circulating air path, and the refrigerator further comprises: the fan is positioned in the circulating air passage and used for driving the air flow to flow in the circulating air passage; the heat insulation plate is positioned in the circulating air passage and can move between a first position and a second position, wherein when the fan works, the heat insulation plate moves to the first position so as to enable the circulating air passage to be communicated and further enable air flow to flow in the circulating air passage; when the fan stops working, the heat insulation plate moves to a second position to isolate the circulating air path, so that the air flow of the refrigerating cavity is prevented from flowing to the air supply duct or the storage cavity.

The refrigerator provided by the embodiment of the disclosure can realize the following technical effects:

the embodiment of the disclosure provides a refrigerator, which realizes air cooling refrigeration of the refrigerator through a refrigeration cavity, an air supply duct and an evaporator. The air flow of the storage cavity flows into the refrigerating cavity, after exchanging heat with the evaporator in the refrigerating cavity, the temperature of the air flow is reduced, and then flows back into the storage cavity through the air supply duct to refrigerate articles in the storage cavity, so that air cooling refrigeration of the refrigerator is realized. In addition, the refrigerator is further provided with a direct cooling evaporation tube, the direct cooling evaporation tube is arranged on the side wall, so that the side wall can be subjected to air cooling refrigeration through air outlet, the direct cooling evaporation tube is also arranged, direct cooling refrigeration can be realized, the problem that the air outlet is uneven or the local temperature is too high can be solved through the direct cooling evaporation tube, the temperature uniformity of the inner space can be increased, the cooling speed of the inner space is improved, and further the storage of articles in the refrigerator is guaranteed.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of a sidewall structure provided by an embodiment of the present disclosure;

FIG. 2 is a schematic view of a partial structure of an inner liner according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along the direction B-B in FIG. 2;

FIG. 5 is a schematic cross-sectional view of a liner according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another sidewall configuration provided by an embodiment of the present disclosure;

FIG. 7 is a schematic view of a structure of another view of an inner liner provided by an embodiment of the present disclosure;

FIG. 8 is a schematic view of a liner according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a fitting structure of an inner liner and an evaporator according to an embodiment of the present disclosure;

FIG. 10 is a schematic cross-sectional view of another view of an inner liner provided in an embodiment of the present disclosure;

FIG. 11 is a schematic view of another liner provided in an embodiment of the present disclosure;

FIG. 12 is a schematic cross-sectional view of another liner provided in an embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of a refrigerant circulation system according to an embodiment of the present disclosure.

Reference numerals:

10. an inner container; 101. a storage cavity; 102. a refrigerating chamber; 1021. a foreign body compartment; 103. an air supply duct; 1031. an air supply port; 1032. a first wall surface; 1033. a second wall surface; 1034. a first air supply port; 1035. a second air supply port; 1036. a third air supply port; 104. a first sidewall; 105. a second sidewall; 106. a third sidewall; 107. a bottom wall; 109. an air duct cover plate; 20. an evaporator; 30. direct cooling evaporating pipe; 301. a first evaporation tube; 302. a second evaporation tube; 40. a return air cover plate; 401. an air return port; 4011. a first return air inlet; 4012. a second return air inlet; 4013. a third return air inlet; 50. a step; 501. a water outlet; 60. a deflection rib; 601. a first deflector rib; 602. a second deflector rib; 70. a blower; 701. a fan cavity; 80. a heat insulating plate; 801. a rotating shaft; 802. an abutting plate; 901. a first switch; 902. a second switch; 903. a third switch; 904. a compressor; 905. a condenser; 906. drying the filter; 907. and a condensing fan.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1 to 13, an embodiment of the present disclosure provides a refrigerator, in particular, an air-cooled refrigerator, and specifically, an air-cooled horizontal refrigerator. The refrigerator comprises a box body and a door body, wherein the door body is movably positioned above the box body. The box body comprises a box shell, an inner container 10 and a foaming layer, wherein the inner container 10 is positioned inside the box shell, and the foaming layer is positioned between the box shell and the inner container 10. Optionally, the foaming layer is a thermal insulation material.

As shown in fig. 8 and 11, the liner 10 includes a plurality of side walls including a front side wall, a rear side wall, a left side wall, and a right side wall, and a bottom wall 107. The front side wall and the rear side wall are disposed opposite to each other and are located at the front and rear ends of the bottom wall 107, respectively, and both extend upward. The left side wall and the right side wall are disposed opposite to each other, and are located at the left and right ends of the bottom wall 107, respectively, and extend upward. The bottom wall 107, front side wall, rear side wall, left side wall, and right side wall collectively enclose an internal space. The inner space is provided with an opening, the opening is upward, and the door body movable cover is arranged above the opening.

For convenience of description, the present application defines the front-rear direction as the width direction and the left-right direction as the length direction.

The side walls enclose together to form an inner space, wherein at least one side wall is provided with an air supply duct 103, the inner space comprises a storage cavity 101, and an inlet of the storage cavity 101 is communicated with an air supply port 1031 of the air supply duct 103. The liner 10 is also provided with a refrigerating cavity 102, an outlet of the refrigerating cavity 102 is communicated with an inlet of the air supply duct 103, air flow of the storage cavity 101 flows into the refrigerating cavity 102, after heat exchange and temperature reduction in the refrigerating cavity 102, flows into the air supply duct 103, and flows back into the storage cavity 101 from an air supply port 1031 of the air supply duct 103 to cool objects in the storage cavity 101. Here, the storage chamber 101, the cooling chamber 102, and the air supply duct 103 form a circulation air path.

The refrigerator further comprises an evaporator 20 and a fan 70, wherein the evaporator 20 is positioned in the refrigerating cavity 102, and the evaporator 20 is used for exchanging heat with air flow in the refrigerating cavity 102. Optionally, the fan 70 is located in the circulation air path, and the fan 70 can drive airflow to flow in the circulation air path so as to realize wind circulation of the refrigerator.

Optionally, as shown in fig. 1, 2 and 5, the refrigerator further includes a direct cooling evaporation tube 30, and the direct cooling evaporation tube 30 is provided on a side wall.

In this embodiment, the refrigerator forms air-cooled refrigeration of the refrigerator through the evaporator 20, the fan 70 and the circulating air path. The direct cooling evaporating pipe 30 is arranged on the side wall, on the one hand, the direct cooling evaporating pipe 30 can improve the cooling speed inside the refrigerator and the refrigerating efficiency of the refrigerator. On the other hand, the direct cooling evaporating pipe 30 can compensate the conditions of uneven air outlet and overhigh local temperature in the refrigerator, so that the temperature uniformity of the refrigerator is improved, and the storage effect of articles in the refrigerator is further improved.

Alternatively, the direct-cooling evaporator tube 30 is provided on the side of the side wall facing away from the inner space.

Here, the direct-cooling evaporation tube 30 is not exposed to the inner space, so that the direct-cooling evaporation tube 30 can be protected from corrosion or damage to the direct-cooling evaporation tube 30.

Alternatively, the direct-cooling evaporator 30 includes one or more evaporator tubes, and when the number of evaporator tubes is plural, the plural evaporator tubes can be arranged in series or in parallel. That is, the direct cooling evaporation tube 30 may be an integral structure, or may be a multi-stage evaporation tube, and the direct cooling evaporation tube may be disposed on one or more side walls to increase the refrigerating efficiency of the refrigerator.

Alternatively, as shown in fig. 1 and 2, the direct-cooling evaporator 30 includes a first evaporator 301, the first evaporator 301 is disposed along the extending direction of the air supply duct 103, and the first evaporator 301 is matched with the air supply duct 103.

In this embodiment, the first evaporating tube 301 extends along the air supply duct 103, so that the first evaporating tube 301 can further reduce the temperature of the air supply duct 103, and further improve the cooling speed of the refrigerator. And even the length of air supply duct 103 is longer, or air supply duct 103 is close to the opening and exchanges heat with external environment easily and leads to the air-out temperature inhomogeneous, the embodiment of the present disclosure is in the direct cooling evaporating pipe 30 of the lateral wall department that air supply duct 103 corresponds, can improve air-out homogeneity of air supply duct 103, and then improves the refrigerating effect of inner space. Moreover, as the direct cooling evaporating pipes 30 are arranged in cooperation with the air supply duct 103, the density and the number of the direct cooling evaporating pipes 30 can be smaller than those of the evaporating pipes of the direct cooling refrigerator, so that frosting of the refrigerator can be reduced, and the refrigerating effect of the refrigerator is ensured.

Optionally, the first evaporation tube 301 is disposed on a side of the air supply duct 103 facing away from the inner space, that is, on a side of the air supply duct facing the foaming layer.

It should be noted that: the first evaporating pipe 301 is matched with the air supply duct 103, which means that the shape, the size and the like of the first evaporating pipe 301 are the same as or similar to those of the air supply duct 103.

Optionally, one side wall is provided with one or more air supply channels 103, and when the number of the air supply channels 103 is multiple, the air supply channels 103 are sequentially arranged at intervals along the height direction of the side wall.

In this embodiment, at least one side wall of the refrigerator is provided with the air supply channels 103, where the number of the air supply channels 103 in one side wall may be one or multiple, and in practical application, a user may set the number of the air supply channels 103 according to the needs.

Alternatively, when the number of the air supply channels 103 is plural, each air supply channel 103 is provided with a first evaporation tube 301. So that the air flow in each air supply duct 103 can be further cooled through the first evaporating pipe 301, and the cooling rate in the refrigerator is further improved.

For example, one side wall of the refrigerator is provided with a plurality of air supply channels 103, the plurality of air supply channels 103 comprise a first air supply channel and a second air supply channel, the first air supply channel is located above the second air supply channel, and the first air supply channel and the second air supply channel are both provided with a first evaporating pipe 301. Optionally, the plurality of air supply ducts 103 further includes a third air supply duct, which is located between the first air supply duct and the second air supply duct, and optionally, the third air supply duct is also provided with a first evaporation tube 301. This can increase the cooling effect of the side wall.

Alternatively, the number of the first evaporation tubes 301 is less than or equal to the number of the air supply channels 103, and each first evaporation tube 301 is disposed in one air supply channel 103.

For example, when the air supply duct 103 is located at the middle portion of the side wall and/or the upper portion of the side wall, the air supply duct 103 is provided with the first evaporation tube 301. Here, when the air supply duct 103 is provided at the upper portion and/or the middle portion of the side wall, since the air supply duct 103 is close to the opening, the door is often opened, and the external air flow easily flows into the inner space from the opening, the air flow in the air supply duct 103 at the opening easily exchanges heat with the external air flow, resulting in a higher temperature of the air supply duct 103 at the position. Therefore, the first evaporation tube 301 is disposed on the air supply duct 103 at the upper portion and/or the middle portion of the side wall, so that the temperature of the air flow in the air supply duct 103 can be reduced, and the temperature inside the refrigerator can be more uniform.

Alternatively, when the air supply duct 103 is located at the lower portion of the side wall, the air supply duct 103 may be provided with the first evaporation tube 301, or may not be provided with the first evaporation tube 301. Since the air flow at the lower part of the side wall exchanges less heat with the external air flow, the first evaporation tube 301 may not be provided in the lower air supply duct 103. It should be noted that: the first evaporation tube 301 may be provided in the lower air supply duct 103, so that the cooling rate of the lower portion can be increased.

Alternatively, each of the air supply ducts 103 extends in the length or width direction of the side wall, so that the air supply area of the air supply duct 103 can be increased.

Alternatively, the direct cooling evaporation tube may be disposed at a side wall without the supply air duct 103 to improve temperature uniformity of the inner space. For example, the lateral wall far away from the air supply outlet, or the lateral wall far away from the refrigerating cavity can be provided with a direct-cooling evaporating pipe, in actual use, the direct-cooling evaporating pipe can be arranged according to the temperature distribution condition in the refrigerator, so that the temperature of the refrigerator is reduced, the temperature uniformity is improved, and the refrigerating effect of the refrigerator is improved.

Optionally, as shown in fig. 5, the refrigeration cavity 102 is provided with an air return port 401, the air return port 401 communicates with the storage cavity and the refrigeration cavity, and the direct-cooling evaporation tube 30 includes a second evaporation tube 302, where the second evaporation tube 302 corresponds to the refrigeration cavity 102, so as to reduce the temperature around the refrigeration hanger 102. Optionally, the refrigerating chamber 102 is located at one end of the inner space, the height of the top of the refrigerating chamber 102 is smaller than the height of the opening of the inner container 10, and the height of the second evaporation tube 302 is greater than the height of the top of the refrigerating chamber 102.

In this embodiment, since the inlet of the refrigerating chamber 102 is communicated with the outlet of the storage chamber 101, that is, the refrigerating chamber 102 is provided with the air return port 401, the air flow in the storage chamber 101 flows into the refrigerating chamber 102 through the air return port 401, and here, since the refrigerating chamber 102 is provided with the air return port 401, the air flow temperature at the refrigerating chamber 102 is higher. In this embodiment, the second evaporation tube 302 is disposed above the refrigeration cavity 102, and the second evaporation tube 302 can reduce the temperature at the refrigeration cavity 102, so as to improve the temperature uniformity in the refrigerator.

Optionally, the plurality of side walls includes a first side wall 104, a second side wall 105, and a third side wall 106, the first side wall 104 being connected to a first end of the bottom wall 107 and extending upward, the second side wall 105 being connected to a second end of the bottom wall 107 and extending upward; that is, the first sidewall 104 and the second sidewall 105 are disposed opposite to each other, wherein the third sidewall 106 is connected between the first sidewall 104 and the second sidewall 105, and the third sidewall 106 is connected to the third end of the bottom wall 107 and extends upward. Optionally, as shown in fig. 8 and 11, the refrigerator further includes a return air cover 40, and the return air cover 40 encloses a bottom wall 107, a front side wall, a rear side wall, and a right side wall to form a refrigeration cavity 102. Alternatively, the return air cover 40 encloses the bottom wall 107, the first side wall 104, the second side wall 105, and the third side wall 106 to form the refrigeration cavity 102. The second evaporation tube 302 is located above the return air cover 40, and the second evaporation tube 302 is disposed on the third side wall 106, specifically, the second evaporation tube 302 is disposed on a side of the third side wall 106 facing away from the inner space.

Here, the return air cover plate 40 encloses with the inner container 10 to form the refrigeration chamber 102, and the refrigeration chamber 102 is located one end of the inner container 10, and the second evaporating pipe 302 is located above the return air cover plate 40, so that the second evaporating pipe 302 can reduce the temperature above the return air cover plate 40, further reduce the temperature around the refrigeration chamber 102, avoid the higher temperature at the refrigeration chamber 102, and further improve the temperature uniformity of the refrigerator.

In some alternative embodiments, the refrigeration cavity 102 may also be disposed on a side wall, where the side wall forms the refrigeration cavity 102, the evaporator 20 is disposed in the refrigeration cavity 102, and the second evaporation tube 302 is disposed above the refrigeration cavity 102, so as to improve temperature uniformity in the refrigerator.

It should be noted that: the second evaporation tube 302 may be disposed on the corresponding side wall of the refrigeration cavity 102, but since the evaporator 20 is disposed in the refrigeration cavity 102, the second evaporation tube 302 may be disposed, or the second evaporation tube 302 may not be disposed, so that the second evaporation tube 302 may be disposed to supplement refrigeration. The absence of the second evaporator tube 302 can save costs and reduce the energy consumption of the refrigerator.

Alternatively, the bottom wall 107 portion of the liner 10 is raised upwardly to form a step 50, below the step 50 for placement of the compressor. Optionally, the return air cover 40 is disposed above the step 50, and the return air cover 40 and the step 50 together form a refrigeration cavity 102. Specifically, the return air cover 40 is located in the inner space, and the return air cover 40 divides the inner space into the refrigerating chamber 102 and the storage chamber 101, where the height of the second evaporating pipe 302 is higher than the height of the return air cover 40. Thus, the second evaporation tube 302 can increase the cooling speed around the refrigerating chamber 102, thereby improving the temperature uniformity of the refrigerator.

As shown in fig. 5, the second evaporating pipe 302 is located above the return air cover 40, and the second evaporating pipe 302 extends from the return air cover 40 toward the opening of the liner 10, so as to reduce the temperature above the refrigerating chamber 102 and improve the temperature uniformity inside the refrigerator.

Optionally, the second evaporation tube 302 is curved, so as to increase the contact area between the second evaporation tube 302 and the sidewall, and further increase the cooling speed of the second evaporation tube 302.

As shown in fig. 5, the second evaporation tube 302 includes a plurality of sub-tubes, each of which extends along the width direction of the third sidewall 106, so as to increase the contact area between the second evaporation tube 302 and the third sidewall 106.

Optionally, the freezer still includes the fourth lateral wall, the fourth end at the diapire is connected to the fourth lateral wall to upwards extend, and the fourth lateral wall is connected between first lateral wall and second lateral wall, optionally, the direct cooling evaporating pipe also can set up at the fourth lateral wall, specifically, set up in the one side that the fourth lateral wall deviates from the inner space, because the fourth lateral wall does not have the supply-air outlet also does not have the return air inlet like this, the setting of direct cooling evaporating pipe can reduce the temperature of fourth lateral wall department, and then avoid fourth lateral wall department cold air current less, the inhomogeneous condition of refrigeration.

Optionally, the evaporator 20 is located above the step 50.

In this embodiment, the evaporator 20 is located above the step 50, so that the evaporator 20 does not occupy too much space in the horizontal direction of the internal space, ensuring the storage volume of the storage cavity 101, and making the refrigeration cavity 102 more compact, reducing the heavy feeling inside the refrigerator.

Alternatively, the evaporator 20 is obliquely placed on the step 50, which can facilitate the discharge of the defrost water of the evaporator 20. Alternatively, the evaporator 20 is disposed obliquely in the width direction of the liner 10.

Alternatively, the fins of the evaporator 20 extend in the height direction, that is, the width direction of the evaporator 20 extends in the height direction of the liner 10, so that the space occupied by the evaporator 20 in the height direction can be reduced, thereby freeing up the space in the upper portion.

Alternatively, the direct-cooling evaporator tube 30 is provided in series or in parallel with the evaporator tube of the evaporator 20.

In this embodiment, when the direct-cooling evaporation tube 30 is connected in series with the evaporation tube of the evaporator 20, the temperatures of the direct-cooling evaporation tube 30 and the evaporator 20 are consistent, so as to improve the temperature uniformity in the refrigerator. When the direct cooling evaporation tube 30 is connected with the evaporation tube of the evaporator 20 in parallel, the evaporator 20 and the direct cooling evaporation tube 30 can be controlled independently, and a user can select the direct cooling evaporation tube 30 or the evaporator 20 to be opened or closed according to the requirements, so that the use flexibility of the refrigerator is improved.

Alternatively, the first and second evaporation tubes 301 and 302 are connected in series or in parallel. Here, the first evaporation tube 301 can cool the air supply duct 103, and the second evaporation tube 302 is used for cooling the periphery of the refrigeration cavity 102. The first evaporating pipe 301 and the second evaporating pipe 302 are arranged in series, so that the temperatures of the first evaporating pipe 301 and the second evaporating pipe 302 are consistent, and the temperature uniformity in the refrigerator is further improved. The first evaporating pipe 301 and the second evaporating pipe 302 can also be arranged in parallel, so that the first evaporating pipe 301 and the second evaporating pipe 302 can be independently controlled, and the flexibility of use is improved.

As shown in fig. 13, optionally, the refrigerator includes a refrigerant circulation system, where the refrigerant circulation system is used for refrigerating the refrigerator, and the refrigerant circulation system includes a compressor 904, a condenser 905, a capillary tube, and an evaporation assembly that are connected, and the evaporation assembly includes an evaporator 20, a first evaporation tube 301, and a second evaporation tube 302. The refrigerant circulation system further includes a condensing fan 907, and the condensing fan 907 is configured to dissipate heat from the condenser 905.

Optionally, the evaporator 20, the first evaporation tube 301 and the second evaporator 302 are arranged in parallel, and the refrigerator further includes a first switch 901, a second switch 902 and a third switch 903, where the first switch 901 is used to control the opening or closing of the first evaporation tube 301, the second switch 902 is used to control the opening or closing of the second evaporation tube 302, and the third switch 903 is used to control the opening or closing of the evaporator 20. Optionally, the flow rate of the refrigerator in the evaporator 20 is greater than the flow rate of the refrigerant in the second evaporator tube 302. The flow rate of the refrigerant in the second evaporation tube 302 is greater than the flow rate of the refrigerant in the first evaporation tube 301. That is, the temperature of the first evaporation tube 301 is greater than the temperature of the second evaporation tube 302, and the temperature of the second evaporation tube 302 is greater than the temperature of the evaporator 20.

Here, the temperature of the evaporator 20 can meet the refrigeration requirement of the refrigerator, and the first evaporation tube 301 is mainly used for improving the cooling rate and the temperature uniformity in the freezing process. The second evaporating pipe 302 is mainly used for increasing the refrigerating depth on the steps and reducing the temperature in the refrigerating process.

Optionally, the refrigerator further includes a controller electrically connected to each of the first switch 901, the second switch 902, and the third switch 903, where the controller can control the first switch 901, the second switch 902, and the third switch 903 to be opened and closed.

Optionally, the refrigerator further includes a detecting device for detecting a temperature of the inner space, and the controller can control the opening and closing of the first switch 901, the second switch 902, and the third switch 903 according to the temperature of the inner space.

Optionally, the number of the detecting devices is plural, and the detecting devices are disposed in the inner space at intervals and are used for detecting temperatures of a plurality of positions in the inner space. Specifically, detection device can all be set up to one or more in the top of refrigeration chamber, supply-air outlet department, a plurality of lateral walls, diapire, the below of the door body to detect the temperature homogeneity of inner space.

Optionally, when the refrigerator runs in the refrigeration mode, the temperature requirement of the inner space is higher, the controller controls the first switch 901 and the second switch 902 to be closed, and controls the third switch 903 to be opened, so that the refrigerator can realize the refrigeration function only by relying on the temperature of the evaporator 20, and the energy consumption of the refrigerator is saved.

Optionally, when the refrigerator is in the refrigeration mode, the temperature of the inner space is lower, and the controller controls the third switch 903 to be turned on, so as to ensure the refrigeration function of the refrigerator. When the temperature of the inner space is higher than a first preset temperature, the controller controls the first switch 901 and the second switch 902 to be turned on so as to reduce the temperature in the refrigerator. Optionally, when the temperature of the internal space is lower than the first preset temperature, the first switch 901 is controlled to be turned off, and the second switch 902 is controlled to be turned on, so as to keep the temperature at the refrigeration cavity low.

Optionally, when the refrigerator is in the freezing mode, the controller controls the second switch 902 to be turned off when the temperature above the step, that is, the temperature above the refrigerating chamber is lower than a second preset temperature, so as to reduce the energy consumption of the refrigerator, wherein the second preset temperature is lower than the first preset temperature.

Alternatively, when the temperature difference of the plurality of detecting devices is greater than a preset difference, the controller controls both the first switch 901 and the second switch 902 to be turned on. Here, the temperature difference of the plurality of detecting devices is greater than the preset difference, which indicates that the temperature of the internal space is not uniform, and the first switch 901 and the second switch 902 are controlled to be opened, so that the temperature uniformity of the internal space can be improved.

Optionally, the refrigerator further includes a timing device, and when the temperature of the inner space does not drop to the first preset temperature within the preset time, the controller controls the first switch 901 and the second switch 902 to be turned on, so as to increase the cooling speed of the inner space.

Optionally, when the refrigerator is in the quick-freezing mode, the controller controls the first switch 901, the second switch 902 and the third switch 903 to be opened, so as to increase the cooling rate and maintain the freezing time.

Optionally, the side wall further defines a fan cavity 701, the fan cavity 701 is in communication with the one or more air supply channels 103, and a fan 70 is located in the fan cavity 701, and the fan 70 is capable of driving an air flow to the plurality of air supply channels 103, respectively. As shown in fig. 6, a side wall is provided with two air supply channels 103, each air supply channel 103 extends along the length direction of the side wall, and the two air supply channels 103 are arranged at intervals along the height direction of the side wall. The first evaporation tube 301 is matched with the fan chamber 701 and the air supply duct 103, that is, the first evaporation tube 301 is disposed on a side of the fan chamber 701 facing away from the inner space, and is disposed on a side of the air supply duct 103 facing away from the inner space. Thus, the temperature of the fan cavity 701 can be reduced, and the temperature uniformity of the refrigerator can be further improved.

Optionally, the first evaporation tube 301 is bent to increase the contact area between the first evaporation tube 301 and the side wall, so as to improve the cooling effect of the first evaporation tube 301 on the air supply duct 103 and the fan cavity 701.

Optionally, the liner 10 includes a liner body and an air duct cover plate 109, where the liner body is recessed toward a direction away from the inner space to form an air supply slot; the air duct cover 109 is disposed on a side of the air supply duct facing the inner space and forms an air supply duct 103 with the air supply duct, the air duct cover 109 is configured with a plurality of air supply openings 1031, and the plurality of air supply openings 1031 are sequentially arranged at intervals along the flow direction of the air flow in the air supply duct 103.

In this embodiment, the liner body is recessed towards the direction away from the inner space to form an air supply groove, and the air duct cover plate 109 is covered on one side of the air supply groove towards the inner space, so that the volume of the inner space occupied by the air supply duct 103 can be reduced, and the storage capacity of the inner space is improved. And the contact area of the inner container 10 and the articles in the inner space can be reduced, the scale storage amount of the inner container 10 is reduced, and the inner container 10 is convenient to clean.

Optionally, as shown in fig. 6, an arrow in fig. 6 indicates a flow direction of an air flow in the air supply duct, the refrigerator further includes a baffle rib 60, the baffle rib 60 is located in the air supply duct 103, and an extending direction of the baffle rib 60 intersects with the flow direction of the air flow, so that the air flow in the air supply duct 103 can bypass the baffle rib 60 and flow.

In this embodiment, the baffle rib 60 is disposed in the air supply duct 103, so that the air flow in the air supply duct 103 is blocked by the baffle rib 60, and needs to flow around the baffle rib 60, so that the air flow in the air supply duct 103 cannot be instantaneously rushed to the tail end air supply port 1031, the air supply uniformity of the air supply duct 103 is effectively improved, and the phenomenon that the air volume of the tail end air supply port 1031 is overlarge is avoided. Moreover, when the first evaporating pipe 301 extends along the air supply duct 103, the arrangement of the baffle ribs 60 increases the contact time between the air flow in the air supply duct 103 and the first evaporator 301, further reduces the temperature of the air flow, increases the cooling rate of the refrigerator, and further improves the refrigerating effect of the refrigerator.

Alternatively, the baffle rib 60 may be disposed on a side of the air duct cover 109 facing the air supply duct, or may be disposed on a side of the liner body facing the air supply duct.

Optionally, the number of the baffle ribs 60 is plural, and the plurality of baffle ribs 60 are sequentially and alternately arranged in the air supply duct 103 along the flow direction of the air flow in the air supply duct 103.

In this embodiment, the plurality of baffle ribs 60 are disposed in the air supply duct 103, and the plurality of baffle ribs 60 can increase the guiding and blocking effects on the air flow, so as to improve the air supply uniformity of the air supply duct 103.

Optionally, an air supply duct 103 includes a plurality of air supply openings 1031, and the plurality of air supply openings 1031 are sequentially spaced along the flow direction of the air flow in the air supply duct 103, wherein the baffle ribs 60 are located between two adjacent air supply openings 1031.

In this embodiment, the baffle rib 60 is located between two adjacent air outlets 1031, so that on one hand, the arrangement of the baffle rib 60 is convenient, and the installation positions of the baffle rib 60 and the air outlets 1031 are prevented from collision. On the other hand, the baffle ribs 60 can block the air flow flowing toward the downstream air supply port 1031 to avoid an excessively high flow rate.

Alternatively, when the number of the baffle ribs 60 is plural, the plurality of baffle ribs 60 and the plurality of air inlets 1031 are sequentially staggered at intervals. In this way, the baffle ribs 60 can be arranged on the whole air supply duct 103, so that the air outlet uniformity of the air supply duct 103 is improved. And the baffle ribs 60 are arranged between the adjacent air supply outlets 1031, so that the air outlet of the plurality of air supply outlets 1031 is more uniform, and the generation of vortex is avoided.

Alternatively, the air supply duct 103 includes a first wall 1032 and a second wall 1033, the second wall 1033 is disposed opposite to the first wall 1032, and a direction in which the first wall 1032 and the second wall 1033 are disposed intersects with a direction of flow of the air flow in the air supply duct 103; one end of the baffle rib 60 is connected to one of the first wall 1032 and the second wall 1033, and a gap is formed between the other end of the baffle rib and the other of the first wall 1032 and the second wall 1033, so that the air flow in the air supply duct 103 flows through the gap.

In this embodiment, the first wall 1032 and the second wall 1033 are two opposite walls of the air supply duct 103, one end of the baffle rib 60 is connected to one of the first wall 1032 and the second wall 1033, so that connection and fixation of the baffle rib 60 can be achieved, a gap exists between the other end of the baffle rib 60 and the other of the first wall 1032 and the second wall 1033, and air flow can bypass the baffle rib 60 through the gap, so that the baffle rib 60 achieves a guiding effect on air flow, so that the flow speed of air flow is slowed down, and the air flow is prevented from rushing to the tail end air supply port 1031 instantly.

Optionally, the plurality of baffle ribs 60 include a first baffle rib 601 and a second baffle rib 602, one end of the first baffle rib 601 is connected to the first wall 1032, and a first gap exists between the other end of the first baffle rib 601 and the second wall 1033. One end of the second rib 602 is connected to the first wall 1032, and a second gap is formed between the other end of the second rib 602 and the second wall 1033, and the gap includes a first gap and a second gap; wherein, the first baffle rib 601 and the second baffle rib 602 are staggered in sequence.

In this embodiment, a first gap exists between the first baffle rib 601 and the second wall 1033, and a second gap exists between the second baffle rib 602 and the first wall 1032, that is, the first gap is close to the second wall 1033, the second gap is close to the first wall 1032, and the first gap and the second gap are staggered, so that the air flow in the air supply duct 103 can flow in a curved manner, and further the air flow in the air supply duct 103 can flow in an S-shaped manner, so that the air outlet of each air supply port 1031 is more uniform, and the air supply uniformity of the air supply ports 1031 is improved.

Optionally, the plurality of air outlets 1031 includes a first air outlet 1034, a second air outlet 1035, and a third air outlet 1036, where the first air outlet 1034, the second air outlet 1035, and the third air outlet 1036 are sequentially arranged at intervals along a flow direction of the air flow; wherein the first deflector 601 is located between the first air supply port 1034 and the second air supply port 1035, and the second deflector 602 is located between the second air supply port 1035 and the third air supply port 1036.

In this embodiment, the first deflecting rib 601 is located between the first air supply port 1034 and the second air supply port 1035, and the second deflecting rib 602 is located between the second air supply port 1035 and the third air supply port 1036, so that deflecting ribs 60 are disposed between every two adjacent air supply ports 1031, and the deflecting ribs 60 are staggered, so that the air outlet of the plurality of air supply ports 1031 is more uniform.

Alternatively, the length of the baffle rib 60 gradually increases along the flow direction of the air flow of the supply air duct 103.

In this embodiment, the length of the baffle rib 60 can be gradually increased along the flow direction of the air flow in the air supply duct 103, so that the blocking effect on the air flow can be gradually increased, and the air volume at the tail end of the wall air supply duct 103 can not be excessively large.

Optionally, when the number of the air supply channels 103 is multiple, the air supply channels 103 are sequentially arranged at intervals along the length direction or the width direction of the side wall, and each air supply channel 103 is internally provided with a baffle rib 60.

In this embodiment, when the number of the air supply channels 103 is multiple, the baffle ribs 60 are disposed in each air supply channel 103, so that the airflow in each air supply channel 103 flows uniformly, and the airflow is prevented from instantaneously rushing to the tail end of the air supply channel 103, so that the air outlet of each air supply channel 103 is more uniform.

Optionally, as shown in fig. 2, 4 and 6, the refrigerator further includes a heat insulation board 80, the heat insulation board 80 is located in the circulation air channel, and the heat insulation board 80 can move between a first position and a second position, wherein when the fan 70 works, the heat insulation board 80 moves to the first position and is communicated with the circulation air channel, so that air flows in the circulation air channel; when the fan 70 stops working, the heat insulation plate 80 moves to the second position to block the circulating air path, so that the air flow of the refrigerating cavity 102 is prevented from flowing to the air supply duct 103 or flowing into the storage cavity 101.

In this embodiment, when the fan 70 is operated, the heat insulation plate 80 moves to the first position, the air flow can flow in the circulating air path, and the cold air flow in the refrigerating chamber 102 is driven into the storage chamber 101. When the refrigerator is in the defrosting mode, the temperature in the refrigerating cavity 102 is increased so as to realize defrosting of the evaporator 20, at the moment, the heat insulation plate 80 moves to the second position, the heat insulation plate 80 can separate the refrigerating cavity 102 from the air supply duct 103 or separate the air supply duct 103 from the storage cavity 101, that is, the heat insulation plate 80 can prevent hot air in the refrigerating cavity 102 from flowing into the air supply duct 103 or into the storage cavity 101, so that heat entering the storage cavity 101 can be reduced in the defrosting mode of the refrigerator, the low-temperature environment inside the refrigerator is maintained, and the energy consumption of the refrigerator is reduced.

Optionally, the heat insulation board 80 is located in the air supply duct 103, and the heat insulation board 80 can move between a first position and a second position, wherein when the fan 70 works, the heat insulation board 80 moves to the first position to open the air supply duct 103, so that air flow in the circulating air path flows; when the fan 70 stops working, the heat insulation plate 80 moves to the second position to close the air supply duct 103, so that the air flow of the refrigeration cavity 102 is prevented from flowing into the storage cavity 101 through the air supply duct 103.

Optionally, the fan 70 and the heat insulation plate 80 are sequentially arranged along the flow direction of the air flow in the air supply duct 103

In this embodiment, the heat insulation board 80 is located at the downstream of the fan 70, so that the air flow from the fan 70 can be blocked from flowing to the air supply duct 103, and thus a better blocking effect is achieved.

Optionally, the heat shield 80 is located at the initial end of the supply air duct 103.

In this embodiment, the heat insulation board 80 is disposed at the initial end of the air supply duct 103, and can block the airflow from flowing to the air supply duct 103, so that the air supply duct 103 can maintain a large-area low-temperature environment, and further can maintain the low-temperature environment of the liner 10, and further ensure the storage stability of the articles.

Alternatively, the heat shield 80 may be located at the middle or end of the supply duct 103, so that the hot air flow is prevented from flowing into the storage chamber 101. It can be understood that: the heat shield 80 may be placed at any position that can block the flow of air to the supply air duct 103 or block the flow of air to the supply air duct 103 to the storage chamber 101.

For example, the heat shield 80 may be located within the fan chamber 701, or at the outlet of the refrigeration chamber 102, or at the inlet of the storage chamber 101.

Alternatively, the number of the heat insulation plates 80 may be plural, and the plurality of heat insulation plates 80 are sequentially disposed in the circulation air path, so that the blocking effect of the heat insulation plates 80 can be increased.

For example, the plurality of heat insulation plates 80 are arranged in the air supply duct 103, and the plurality of heat insulation plates 80 are sequentially spaced in the air supply duct 103 along the flowing direction of the air flow in the air supply duct 103, so that the hot air flow in the refrigerating cavity 102 can be better blocked from flowing into the air supply duct 103.

For another example, the plurality of heat insulation boards 80 may be disposed in a plurality of chambers, for example, the air supply duct 103 is provided with the heat insulation board 80, the outlet of the refrigeration chamber 102 is also provided with the heat insulation board 80, and the fan chamber 701 is also provided with the heat insulation board 80, so that heat can be blocked from entering the air supply duct 103 or the storage chamber 101 from a plurality of positions.

Optionally, when the fan 70 is located at one side of the air supply duct 103, the heat insulation board 80 is disposed at the initial end of the air supply duct 103, that is, the heat insulation board 80 is disposed at the connection position between the air supply duct 103 and the fan 70, so that the temperature rise of the air supply duct 103 can be avoided, and the low-temperature environment of the liner 10 can be ensured.

The air supply duct 103 extends along the length direction of the side wall, so that the heat insulation plate 80 is arranged at the initial end of the air supply duct 103, so that hot air cannot flow into the air supply duct 103, and the low-temperature environment in the liner 10 can be ensured due to the longer length of the air supply duct 103, and the temperature rise of the liner 10 is avoided.

Optionally, the refrigerator further includes a rotating shaft 801, the rotating shaft 801 is disposed on a first wall surface 1032 of the air supply duct 103, one end of the heat insulation board 80 is rotationally connected with the rotating shaft 801, and when the heat insulation board 80 rotates to the first position, a gap exists between the other end of the heat insulation board 80 and a second wall surface 1033 of the air supply duct 103 so as to open the air supply duct 103; when the heat shield 80 is rotated to the second position, the heat shield 80 blocks the air supply duct 103.

In this embodiment, the heat shield 80 is rotatable about the rotational axis 801 to facilitate movement of the heat shield 80 between the first and second positions. When the heat shield 80 is in the first position, a gap exists between the heat shield 80 and the second wall 1033 to facilitate circulation. When the heat shield 80 is in the second position, the heat shield 80 is capable of blocking the supply air duct 103 so that air does not flow from the refrigeration cavity 102 into the supply air duct 103.

Alternatively, the first wall 1032 is an upper wall of the air supply duct 103, and the second wall 1033 is a lower wall of the air supply duct 103, that is, the rotating shaft 801 is disposed on the upper wall of the air supply duct 103, so that when the fan 70 operates, the air flow drives the heat insulation board 80 to rotate to a first position around the rotating shaft 801, and when the fan 70 stops operating, the heat insulation board 80 rotates to a second position around the rotating shaft 801 under the action of self gravity.

In this embodiment, the rotating shaft 801 is disposed on the upper wall surface of the air supply duct 103, so that when the fan 70 works, the air flow flowing out of the fan 70 can blow up the heat insulation board 80 to open the air supply duct 103. When defrosting is needed for the refrigerator, the fan 70 does not work any more, no air flow flows in the air supply duct 103, the heat insulation plate 80 can rotate to the second position under the action of gravity, namely, moves under the action of gravity, and the heat insulation plate 80 extends downwards, so that the heat insulation plate 80 can conveniently seal the air supply duct 103.

Optionally, when the heat insulation board 80 moves to the second position, the heat insulation board 80 abuts against the second wall surface 1033, so as to seal the air supply duct 103.

Optionally, the refrigerator further includes an abutting plate 802, one end of the abutting plate 802 is connected to the lower wall surface of the air supply duct 103, the abutting plate 802 corresponds to the heat insulation plate 80, and when the heat insulation plate 80 moves to the second position, the other end of the abutting plate 802 abuts against the other end of the heat insulation plate 80 to close the air supply duct 103.

In this embodiment, the air supply duct 103 may further be provided with a butt plate 802, and when the heat insulation plate 80 rotates to the second position, the butt plate 802 can butt against the heat insulation plate 80, so that the heat insulation plate 80 can also seal the air supply duct 103.

Alternatively, the baffle rib 60 includes the baffle plate 802, that is, the baffle plate 802 may be the baffle rib 60, so that the baffle plate 802 has the function of guiding the airflow by the baffle rib 60 to make the airflow more uniform, and can also cooperate with the heat insulation plate 80 to close the air supply duct 103.

Optionally, the first side wall 104 and/or the second side wall 105 are provided with an air supply duct 103, and the return air cover plate 40 is provided with an air return opening 401, so that air flow in the inner space can realize air flow, and further, the objects in the inner space can be refrigerated.

In a specific embodiment, as shown in fig. 11 to 12, one of the first sidewall 104 and the second sidewall 105 is provided with an air supply duct 103 and an air supply port 1031, the air return cover 40 is provided with an air return port 401, and the distance between the air return port 401 and the air supply duct 103 provided in the first sidewall 104 and the second sidewall 105 is greater than the distance between the air return port 401 and the other one of the first sidewall 104 and the second sidewall 105, so that air flows out from one side of the liner 10 and returns from the other side, so that the air flow can flow in a larger range in the liner 10, and further the cold air flow in the whole inner space is realized. In fig. 11, arrows indicate the flow direction of the air flow in the liner.

Optionally, the width direction setting along the inner bag 10 of first lateral wall 104 and second lateral wall 105, like this, the distance is shorter between first lateral wall 104 and the second lateral wall 105, compares in current forced air cooling freezer and follows length direction air-out, and the freezer that this disclosed embodiment provided can not be blocked by the midget, and the air current transfer route is also shorter, can improve the refrigeration efficiency of freezer.

The first side wall 104 is a rear side wall, the second side wall 105 is a front side wall, the rear side wall is provided with an air supply duct 103 and the fan 70, the return air cover plate 40 is provided with a return air inlet 401, and the return air inlet 401 is close to the front side wall, so that air flow can flow from back to front, and further air flow of the refrigerator is realized. Alternatively, the front side wall is provided with the air supply duct 103 and the fan 70, and the air return inlet 401 of the air return cover plate 40 is close to the rear side wall, so that air flow can flow from front to back, and air flow in the refrigerator can also be realized.

In another embodiment, as shown in fig. 8 to 10, the first side wall 104 and the second side wall 105 are both provided with an air supply duct 103 and an air supply port 1031, and the return air cover 40 is provided with a return air port 401, so that the air flows flowing out of the first side wall 104 and the second side wall 105 can return air from the return air cover 40, and the air output range inside the liner 10 can be increased, so that the refrigeration efficiency of the refrigerator is ensured. The arrows in fig. 8 indicate the direction of flow of the air flow in the liner.

The first side wall 104 and the second side wall 105 are disposed along the width direction of the liner 10, for example, the first side wall 104 is a front side wall, the second side wall 105 is a rear side wall, that is, the liner 10 is air-out in the front-rear direction, and the air-return cover 40 returns air, so that the air circulation of the refrigerator can be realized.

Optionally, the number of the air return openings 401 is one or more, and when the number of the air return openings 401 is multiple, the air return quantity of the circulating air passage can be ensured, so that the refrigeration efficiency of the refrigerator is improved.

Optionally, one or more of the top of the refrigeration cavity 102, the bottom of the refrigeration cavity 102, and the sides of the refrigeration cavity 102 are provided with an air return 401. The air return cover plate 40 separates the refrigerating cavity 102 in the inner space, and the air return opening 401 is arranged in the refrigerating cavity 102, so that the air return opening 401 is not arranged on the side wall of the inner container 10, and the positions of the air return opening 401 and the air supply opening 1031 are moderate no matter which position of the inner space is used for air outlet, so that the uniformity of the airflow flow in the inner space can be improved, and the uniformity of the temperature is further improved. One or more of the top wall, the bottom and the side surfaces of the refrigerating cavity 102 are provided with an air return opening 401, that is, the refrigerator can return air from multiple directions, so that the air in each area of the inner space can return to the refrigerating cavity 102 nearby and then be recycled, vortex formation can be avoided, waste of air quantity is avoided, the air return quantity in the refrigerator is improved, and finally the refrigerating effect is improved.

Optionally, the top of the refrigeration cavity 102, the bottom of the refrigeration cavity 102, and the side of the refrigeration cavity 102 are all provided with air return openings 401. This can improve the temperature uniformity and the air supply uniformity of the internal space.

Optionally, the return air cover 40 includes a top plate and a side plate, the top plate is located above the refrigeration cavity 102, and the top plate is provided with a first return air inlet 4011. The curb plate is located the roof and is faced one side of storing chamber 101, and curb plate downwardly extending, and the second return air inlet 4012 has been seted up to the curb plate, and return air inlet 401 includes first return air inlet 4011 and second return air inlet 4012.

In this embodiment, the return air cover plate 40 is used as a cavity wall of the refrigeration cavity 102, and the top plate and the side plates are provided with return air inlets 401, so that the top and side surfaces of the refrigeration cavity 102 can return air.

Optionally, the return air cover 40 is an L-shaped cover, so that the space of the return air cover 40 occupying the internal space in the horizontal direction can be reduced, and the return air inlet 401 is respectively formed in the top plate and the side plate of the L-shaped cover.

Optionally, when the bottom of the refrigeration cavity 102 is provided with the air return port 401, a gap exists between the side plate and the wall surface of the step 50 facing the storage cavity 101, the gap is communicated with the refrigeration cavity 102, the lower end part of the gap forms a third air return port 4013, the third air return port 4013 is communicated with the gap and the storage cavity 101, and the air return port 401 comprises the third air return port 4013.

In this embodiment, a gap exists between the air return cover plate 40 and the side surface of the step 50, and the third air return opening 4013 is arranged at the bottom of the gap, so that the air flow in the storage cavity 101 can flow into the refrigeration cavity 102 along the third air return opening 4013 and the gap, thereby realizing bottom air return of the refrigeration cavity 102. Optionally, when a ventilation opening is provided at the bottom of the foreign object cabin 1021, the ventilation opening may be the third air return opening 4013, and the third air return opening 4013 is also convenient for discharging the foreign objects in the foreign object cabin 1021.

Optionally, the side panel portions of the return air cover 40 abut the side walls of the steps 50. Specifically, the side plate portion is in abutment with or adjacent to the step 50.

Optionally, the side wall of the step 50 is recessed in a direction away from the storage cavity 101 to form a groove, and the side plate covers the groove to form a gap. In this embodiment, the step 50 faces the storage cavity 101 to avoid being recessed inwards, so that excessive occupation of the volume of the storage cavity 101 can be avoided. And the return air cover plate 40 does not need to protrude towards the storage cavity 101, so that the overall aesthetic property of the inner space can be improved. Optionally, the grooves are vertical grooves to facilitate the flow of air from below to above. And the grooves enable the channel flow area of the third return air inlet 4013 to be larger, so that the resistance of the air flow of the return air inlet 401 to the evaporator 20 can be reduced, the impact between the air flow and the side wall of the step 50 is avoided, the flow smoothness is improved, and the air loss is reduced.

The setting through three return air inlet 401 for the return air of freezer is more smooth and easy, and the air current does not have the resistance from the process that return air inlet 401 got back to evaporimeter 20, and the return air area is great, can reduce the loss of amount of wind, improves the smooth and easy degree of air current flow.

Optionally, the interior of the refrigeration cavity 102 further defines an evaporator compartment and a foreign object compartment 1021, which are in communication, the evaporator 20 is located in the evaporator compartment, and the return air inlet 401 is located in the foreign object compartment 1021. The return air inlet 401 is arranged in the foreign matter cabin 1021, so that the storage cavity 101 or external impurities fall into the refrigerating cavity 102 from the return air inlet 401 and then fall into the foreign matter cabin 1021, and the foreign matters can be prevented from falling into the evaporator cabin through the return air inlet 401, so that the foreign matters can be prevented from falling into the evaporator 20, the work of the evaporator 20 is influenced, and the refrigerating work of a refrigerator is guaranteed.

It should be noted that, in some embodiments, the air-out circuit of the refrigerator is different from the present application, for example, the refrigerating chamber 102 is provided with an air outlet and other openings, and for convenience of description, the openings capable of communicating the refrigerating chamber 102 and the storage chamber 101 are collectively referred to as an air vent, which may be an air return opening 401, an air outlet, or an air vent. In these embodiments, the refrigerating chamber 102 may also define a foreign object compartment 1021 and an evaporator compartment, and the ventilation opening is provided in the foreign object compartment 1021, so as to achieve the technical effect of preventing the foreign objects from falling into the evaporator 20, which are all the alternative embodiments of the present application.

Alternatively, the evaporator compartment and the foreign matter compartment 1021 are sequentially provided in a direction from the first side wall 104 to the second side wall 105. That is, the evaporator compartment and the foreign matter compartment 1021 are provided along the width direction of the inner container 10. In this embodiment, when the airflow flows in the front-rear direction, the evaporator chamber and the foreign matter chamber 1021 are provided in the width direction, so that the space in the cooling chamber 102 can be efficiently utilized, and not only the evaporator 20 can be placed, but also the foreign matter can be prevented from falling.

Optionally, the bottom wall of the foreign object chamber 1021 is inclined downward in the direction from the refrigerating chamber 102 to the storage chamber 101 so that the foreign objects in the foreign object chamber 1021 flow into the storage chamber 101. In this embodiment, the foreign object cabin 1021 is obliquely arranged, so that the foreign objects in the foreign object cabin 1021 can be smoothly discharged into the storage cavity 101, and further the foreign objects can be conveniently treated.

Optionally, the top wall of the step 50 is provided with a drain 501, and the evaporator 20 is inclined toward the drain 501 in order to facilitate drainage of the evaporator 20.

Alternatively, the number of the evaporators 20 may be one or more, and when the number of the evaporators 20 is plural, the plurality of evaporators 20 includes a first evaporator and a second evaporator, and the first evaporator are disposed in the refrigerating chamber 102 in the width direction of the inner container 10.

Optionally, when the refrigerator includes the first evaporator and the second evaporator, the air return opening 401 is located between the first evaporator and the second evaporator, and the foreign body chamber 1021 corresponds to the air return opening 401, so that the air flow flowing into the air return opening 401 can flow to the first evaporator and the second evaporator respectively.

Optionally, the number of the fans 70 is one or more, when one of the first side wall 104 and the second side wall 105 is provided with the air supply duct 103, the fans 70 and the air supply duct 103 are located on the same side wall, so that the air flow flowing out through the refrigeration cavity 102 can directly flow to the air supply duct 103 after flowing through the fans 70, and the loss of the air flow can be reduced without passing through corners.

Alternatively, the drain port 501 is located between the first evaporator and the second evaporator, both of which are inclined toward the drain port 501 to facilitate the discharge of the defrost water of the first evaporator and the second evaporator.

Optionally, the bottom wall 107 is provided with a second direct-cooling evaporation tube, so that the cooling speed of the bottom can be accelerated, and the freezing effect of the refrigerator is further ensured.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A refrigerator, comprising:

the inner container comprises a bottom wall and a plurality of side walls, wherein the side walls and the bottom wall are jointly enclosed to form an inner space, at least one side wall is provided with an air supply duct, the inner space comprises a storage cavity, the inner container is also provided with a refrigeration cavity, and air flows through the refrigeration cavity, flows into the storage cavity through the air supply duct after exchanging heat, and flows back into the refrigeration cavity through the storage cavity;

the evaporator is positioned in the refrigerating cavity;

and the direct cooling evaporation tube is arranged on the side wall.

2. The refrigerator according to claim 1, wherein,

the direct cooling evaporation tube is arranged on one side of the side wall, which is away from the inner space; and/or the number of the groups of groups,

the direct cooling evaporation tube comprises one or more evaporation tubes, and when the number of the evaporation tubes is multiple, the evaporation tubes are connected in series or in parallel.

3. The refrigerator of claim 1, wherein the direct-cooled evaporator tube comprises:

the first evaporating pipe is arranged along the extending direction of the air supply air duct, and the first evaporating pipe is matched with the air supply air duct.

4. The refrigerator according to claim 3, wherein,

The side wall is provided with a plurality of air supply channels, the air supply channels are sequentially arranged at intervals along the height direction of the side wall, and each air supply channel is provided with the first evaporation tube; and/or the number of the groups of groups,

the air supply duct is positioned in the middle of the side wall and/or the upper part of the side wall, and the first evaporation tube is arranged in the air supply duct.

5. The refrigerator of claim 1, wherein the refrigeration cavity is provided with an air return port, the air return port communicates the storage cavity and the refrigeration cavity, and the direct-cooling evaporation tube comprises:

and the second evaporation tube corresponds to the refrigerating cavity so as to reduce the temperature around the refrigerating cavity.

6. The cooler of claim 5, wherein a plurality of said side walls comprise:

a first side wall connected to the first end of the bottom wall and extending upward;

the second side wall is arranged opposite to the first side wall, is connected to the second end of the bottom wall and extends upwards;

a third side wall connected between the first side wall and the second side wall, and connected to a third end of the bottom wall and extending upward;

the refrigerator further includes:

the return air apron, the return air apron with the diapire first lateral wall the second lateral wall with the third lateral wall encloses jointly and closes the refrigeration chamber, the second evaporating pipe is located the third lateral wall, just the height of second evaporating pipe is greater than the height of return air apron.

7. The refrigerator according to claim 6, wherein,

the bottom wall part of the liner is upwards raised to form a step, and the lower part of the step is used for placing a compressor; the air return cover plate is located above the step, the air return cover plate and the step enclose together to form the refrigerating cavity, and the air return cover plate divides the inner space into the storage cavity and the refrigerating cavity, wherein the evaporator is located above the step.

8. The refrigerator according to claim 1, wherein,

the direct cooling evaporation pipe is connected with the evaporation pipe of the evaporator in parallel or in series.

9. The refrigerator of claim 1, wherein the liner comprises:

the inner container body is sunken towards the direction deviating from the inner space to form an air supply groove;

the air duct cover plate is covered on one side of the air supply groove facing the inner space and forms an air supply duct with the air supply groove, and is provided with a plurality of air supply openings which are sequentially arranged at intervals along the flowing direction of air flow in the air supply duct.

10. The refrigerator of any one of claims 1 to 9, further comprising:

The flow deflecting rib is positioned in the air supply duct, and the extending direction of the flow deflecting rib is intersected with the flowing direction of the air flow so that the air flow flows after bypassing the flow deflecting rib; and/or the number of the groups of groups,

the refrigeration chamber the air supply wind channel with the storing chamber forms circulation wind path, the freezer still includes:

the fan is positioned in the circulating air passage and used for driving the air flow to flow in the circulating air passage;

the heat insulation plate is positioned in the circulating air passage and can move between a first position and a second position, wherein when the fan works, the heat insulation plate moves to the first position so as to enable the circulating air passage to be communicated and further enable air flow to flow in the circulating air passage; when the fan stops working, the heat insulation plate moves to a second position to isolate the circulating air path, so that the air flow of the refrigerating cavity is prevented from flowing to the air supply duct or the storage cavity.

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