CN219318718U - 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 first side wall and a second side wall, the first side wall and the second side wall are arranged along the width direction of the inner container, the first side wall and the second side wall both define an air supply duct with an air supply opening, and the inner container encloses an inner space; the air return cover plate is positioned in the inner space and divides the inner space into a storage cavity and an evaporator cavity, an outlet of the evaporator cavity is communicated with an inlet of the air supply duct, the air return cover plate is provided with an air return opening, and air flow in the storage cavity can flow into the evaporator cavity through the air return opening; the evaporator is positioned in the evaporator cavity; the fans are arranged in the first side wall and the second side wall, the fans are positioned in the air supply air duct, and the fans can drive air flow to flow through the evaporator cavity, the air supply air duct and the storage cavity and then flow back into the evaporator cavity through the air return opening. The loss of air flow can be reduced, the refrigerating effect of the refrigerator is improved, and the energy consumption of the refrigerator is reduced.

Description

Refrigerator

Technical Field

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

Background

Currently, large horizontal freezers are commonly used in commercial applications such as farmer market (meat, seafood) sales, tea sales, small retail wholesale (pork), and the like. The volume of the refrigerator is larger (more than 500L), and the length of the refrigerator is generally more than 1.5 m. The door body is therefore usually designed to be two in order to reduce the door opening force. All large-scale foam door horizontal refrigerators in the market generally adopt a direct cooling refrigeration mode, in the use process, as the door opening and closing times are increased, frost and even ice can be formed on the refrigerator liner, so that the problem of defrosting is brought to users, and meanwhile, the problems of reduction of storage space and rising of energy consumption can be caused.

In the related art, the horizontal air-cooled refrigerator is generally right side + front and back air outlet, bottom air return is carried out, and the evaporator and the fan are generally arranged in the evaporator cavity.

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 air-cooled refrigerator in the related art, the fan and the evaporator are both positioned in the evaporator cavity, so that the air flow flowing out of the fan needs to pass through larger corners in the process of flowing to the front side wall and the rear side wall, the air flow loss is serious, the refrigerating effect of the refrigerator is affected, and the energy consumption of the refrigerator is improved.

It should be noted that the information disclosed in the foregoing background section is only for enhancement of 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 air cooling effect of the refrigerator and reduce the energy consumption of the refrigerator.

Embodiments of the present disclosure provide a refrigerator including: the inner container comprises a first side wall and a second side wall, the first side wall and the second side wall are arranged along the width direction of the inner container, the first side wall and the second side wall both define an air supply duct with an air supply opening, and the inner container encloses an inner space; the air return cover plate is positioned in the inner space and divides the inner space into a storage cavity and an evaporator cavity, an outlet of the evaporator cavity is communicated with an inlet of the air supply duct, the air return cover plate is provided with an air return opening, and air flow in the storage cavity can flow into the evaporator cavity through the air return opening; the evaporator is positioned in the evaporator cavity; the fan is arranged in the first side wall and the second side wall, the fan is positioned in the air supply duct, and the fan can drive air flow to flow through the evaporator cavity, the air supply duct and the storage cavity, and then flow back to the evaporator cavity through the air return opening.

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

the air supply outlets of the first side wall and the second side wall can be used for supplying air to the inner space, and refrigerating air flow is provided for the inner space so as to reduce the temperature of the inner space. The return air cover plate is provided with a return air inlet, when the refrigerator runs, air flow in the evaporator cavity flows through the evaporator to be reduced in temperature, and then flows into the air supply air channels of the first side wall and the second side wall respectively under the driving of the fan, then flows into the storage cavity through the air supply inlet, and after the articles in the storage cavity are refrigerated, flows back into the evaporator cavity through the return air inlet. The flow direction of the air flow in the refrigerator can be increased, and as the fans are arranged in the first side wall and the second side wall, that is to say, the fans and the air supply air duct are arranged on the same side wall, the air flow flowing to the air supply air duct by the fans does not need to pass through a right-angle corner, the loss of the air flow can be reduced, the refrigerating effect of the refrigerator is improved, and the energy consumption of the refrigerator is reduced.

In addition, the air current of freezer flows from first lateral wall and second lateral wall, can shorten the flow distance of outflow air current, reduces the air current and flows the in-process and receive the barrier of midget, improves the forced air cooling refrigeration effect of freezer. Particularly, the refrigerator can obviously improve the refrigerating effect of a large horizontal refrigerator, and can reduce the frosting effect of the inner container by adopting air cooling, thereby realizing frostless effect of the refrigerator and solving the defrosting effect.

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 refrigerator according to an embodiment of the present disclosure;

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

fig. 3 is a schematic diagram of a matching structure of an inner container and a return air cover plate according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram of a fitting structure of an inner liner and an evaporator according to an embodiment of the present disclosure;

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

FIG. 6 is a schematic diagram of a mating structure of two evaporators provided by an embodiment of the present disclosure;

FIG. 7 is a schematic view of an evaporator according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a return air cover, foam deck and evaporator according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of a matching structure of a first heating wire and a liner according to an embodiment of the disclosure;

fig. 10 is a schematic diagram of a matching structure between another first heating wire and a liner according to an embodiment of the disclosure;

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

FIG. 12 is a schematic view of a sidewall configuration provided by an embodiment of the present disclosure;

FIG. 13 is a schematic view of another sidewall configuration provided by an embodiment of the present disclosure;

FIG. 14 is a schematic view of a heat-conducting plate provided in an embodiment of the present disclosure;

FIG. 15 is a schematic view of an exploded view of a return air flap provided in accordance with an embodiment of the present disclosure;

FIG. 16 is a schematic structural view of an evaporator assembly provided by an embodiment of the present disclosure;

FIG. 17 is a schematic view of an exploded construction of one sidewall provided by an embodiment of the present disclosure;

FIG. 18 is a schematic view of an embodiment of the present disclosure providing a duct cover;

FIG. 19 is a schematic view of another duct cover provided in accordance with an embodiment of the present disclosure.

Reference numerals:

1. an inner container; 11. a sidewall; 111. a first sidewall; 112. a second sidewall; 113. a third sidewall; 114. a sidewall body; 115. a step; 116. an air supply duct; 1161. a first air supply duct; 1162. a second air supply duct; 117. an air supply port; 1171. a first air supply port; 1172. a second air supply port; 1174. a first grid; 1175. a second grid; 12. a bottom wall; 13. an inner space; 131. a storage cavity; 132. an evaporator chamber; 2. a return air cover plate; 21. a first return air inlet; 22. a second return air inlet; 23. a third return air inlet; 24. a first sub-cover plate; 241. a first connection station; 25. second son a cover plate; 251. a second connection station; 26. a third sub-cover plate; 27. a side plate; 271. a top plate; 3. an evaporator; 31. a first evaporator; 32. a second evaporator; 33. heating pipes; 331. a first heating pipe; 332. a second heating pipe; 34. a fin; 341. an evaporation tube; 342. a windward side; 343. a clamping hole; 344. an evaporator end plate; 345. perforating; 346. a movable plate; 347. a hook; 35. a first heating wire; 351. a first heating section; 352. a second heating section; 353. a third heating section; 354. a fourth heating section; 355. a fifth heating section; 36. a second heating wire; 37. a water outlet; 39. a communicating pipe; 4. a capillary tube; 41. a first capillary; 43. an air return pipe; 431. a first muffler; 5. an air duct cover plate; 51. a cover plate body; 52. an air guiding structure; 521. a wind supply hole; 53. a first sub-duct cover plate; 532. a second sub-duct cover plate; 533. a plug board; 534. a plug-in groove; 535. a fifth buckle; 55. an air supply groove; 551. an air outlet groove; 552. a fan groove; 56. wind shielding ribs; 6. a foam board; 61. a groove air duct; 62. a heat conductive plate; 63. a vent; 7. a volute; 71. a bottom plate; 72. a volute cover plate; 73. a first housing wall; 74. a second housing wall; 77. an impeller; 78. a first air outlet; 79. a second air outlet; 8. a blower; 81. a fan drainage channel; 811. a first drain passage; 812. a second drain passage; 82. an evaporation drainage channel; 83. a transition drainage channel; 84. a first fan; 85. a second fan; 94. a case shell; 95. a door body; 96. a compressor.

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.

As shown in fig. 1 to 19, embodiments of the present disclosure provide 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 95, wherein the door body 95 is movably positioned above the box body. The box body comprises a box shell 94, an inner container 1 and a foaming layer, wherein the inner container 1 is positioned inside the box shell 94, and the foaming layer is positioned between the box shell 94 and the inner container 1. Optionally, the foaming layer is a thermal insulation material.

The liner 1 includes a bottom wall 12 and side walls 11, the side walls 11 including a front side wall, a rear side wall, a left side wall, and a right side wall. 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 12, 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 12, respectively, and extend upward. The bottom wall 12, front side wall, rear side wall, left side wall and right side wall together enclose an inner space 13. The inner space 13 has an opening, the opening is upward, and the door 95 is movably covered over 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 embodiment of the disclosure provides a refrigerator, the liner 1 includes a first side wall 111 and a second side wall 112, the first side wall 111 and the second side wall 112 are disposed along a width direction of the liner 1, and the first side wall 111 and the second side wall 112 each define an air supply duct 116 having an air supply opening 117. Here, the first sidewall 111 and the second sidewall 112 are disposed along the width direction of the liner 1, that is, the first sidewall 111 may be a rear sidewall or a front sidewall, and the second sidewall 112 may be a front sidewall or a rear sidewall, respectively. It can be understood that: the front and rear side walls each define an air supply duct 116 having an air supply opening 117. This can realize the air-out of the internal space 13, and further realize the air-cooling.

The refrigerator further comprises a return air cover plate 2, the return air cover plate 2 is located in the inner space 13 and divides the inner space 13 into a storage cavity 131 and an evaporator cavity 132, an outlet of the evaporator cavity 132 is communicated with an inlet of the air supply duct 116, the return air cover plate 2 is provided with a return air inlet, and air flow in the storage cavity 131 can flow into the evaporator cavity 132 through the return air inlet. Here, the storage chamber 131 is used to hold items to be frozen, such as meat, seafood, tea leaves, or the like. The evaporator chamber 132 is used for generating a refrigerating air flow, the refrigerating air flow can flow from the evaporator chamber 132 to the air supply duct 116, flow into the storage chamber 131 from the air supply opening 117, exchange heat with objects in the storage chamber 131, flow back into the evaporator chamber 132 for re-cooling, and flow back to the air supply duct 116 for circulation after cooling. Thus, the air path circulation of the refrigerator is realized, and the air cooling refrigeration of the refrigerator is realized.

It should be noted that the return air cover plate 2 may have various shapes, such as L-shape, inclined shape, etc. The evaporator chamber 132 can also be of various shapes and located in different locations of the interior space 13. For example, the evaporator chamber 132 may be located at the left, middle or right end of the inner space 13, and in practical applications, the evaporator chamber 132 and the storage chamber 131 may be arranged according to the structure of the inner space 13 of the refrigerator.

The refrigerator further includes an evaporator 3 and a fan 8, the evaporator 3 being located within the evaporator cavity 132. Alternatively, the blower 8 is located within the same sidewall 11 as the supply air duct 116, and the blower 8 is in communication with the supply air duct 116. The fan 8 can drive air flow to flow through the evaporator cavity 132, the air supply duct 116 and the storage cavity 131, and then flow back into the evaporator cavity 132 through the air return port, so that a circulating air path is formed. Here, the evaporator 3 is adapted to exchange heat with the air flow in the evaporator chamber 132 to form a refrigerant air flow. The fan 8 provides power for the airflow. The fan 8 and the air supply duct 116 are both positioned on the same side wall 11, so that the air flow flowing out of the fan 8 does not need to pass through a right-angle corner to the air supply duct 116, the loss of the air flow can be reduced, the refrigerating effect of the refrigerator is improved, and the energy consumption is reduced.

As shown in fig. 3, thick arrows in fig. 3 indicate air outlet directions of the first air supply duct and the second air supply duct, and thin arrows indicate flow directions of air flows in the storage cavity, optionally, as shown in fig. 12 and fig. 13, fans 8 are disposed in the first side wall 111 and the second side wall 112, the number of fans 8 is plural, the fans 8 include a first fan 84 and a second fan 85, the first fan 84 is located in the first side wall 111, the first fan 84 is communicated with the first air supply duct 1161, and the first side wall 111 defines the first air supply duct 1161. The second fan 85 is located in the second side wall 112, the second fan 85 is in communication with a second air supply duct 1162, the second side wall 112 defines a second air supply duct 1162, and the air supply duct 116 includes a first air supply duct 1161 and a second air supply duct 1162.

In this embodiment, the air current of freezer flows from the return air inlet return air of return air apron 2 from first lateral wall 111 and second lateral wall 112, can shorten the flow distance of outflow air current, reduces the air current flow in-process and receives the barrier of midget, improves the forced air cooling refrigeration effect of freezer. Particularly, the refrigerating effect of the large horizontal refrigerator can be obviously improved, and the frosting effect of the liner 1 can be reduced by adopting air cooling, so that frosting-free effect of the refrigerator is realized, and the defrosting effect is solved.

Alternatively, the number of the air supply channels 116 is one or more, and when the number of the air supply channels 116 is plural, the plurality of air supply channels 116 are sequentially arranged at intervals along the height direction of the side wall 11.

Optionally, the number of the first air supply channels 1161 is one or more, and when the number of the first air supply channels 1161 is a plurality of the first air supply channels 1161 are sequentially arranged at intervals along the height direction of the first side wall 111; and/or, the number of the second air supply channels 1162 is one or more, and when the number of the second air supply channels 1162 is a plurality of, the plurality of second air supply channels 1162 are sequentially arranged at intervals along the height direction of the second side wall 112. In this embodiment, the arrangement of the plurality of first air supply channels 1161 and/or the plurality of second air supply channels 1162 enables the outlet air of the refrigerator to blow to each corner of the liner 1, so as to improve the refrigerating effect of the refrigerator.

Alternatively, the air supply duct 116 of one side wall 11 may be provided with at least one of the upper, middle and lower parts of the side wall 11, so as to enable air outlet to different positions of the liner 1.

In some alternative embodiments, the number of first air supply ducts 1161 is the same as and corresponds to the number of second air supply ducts 1162. Therefore, the air outlets at the front side and the rear side in the refrigerator are uniform, and the air outlet uniformity of the refrigerator is improved. In other alternative embodiments, the number of the first air supply channels 1161 is different from the number of the second air supply channels 1162, so that the air outlet positions and the air outlet amounts of two opposite sides of the refrigerator can be different, and the air outlet positions of two opposite sides can be complementary to increase the air outlet area of the refrigerator. Or different numbers of air supply channels 116 can be arranged according to the requirements of different side walls 11, so that the use flexibility of the refrigerator is improved.

It should be noted that: the number and positions of the first and second air supply ducts 1161 and 1162 may be set according to the use requirement, which is not specifically limited herein.

Optionally, the first air supply duct 1161 extends along a length direction of the liner 1, and/or the second air supply duct 1162 extends along a length direction of the liner 1. Because the length of the refrigerator liner 1 is longer, the air supply duct 116 extends along the length direction of the liner 1, so that the air supply area and the refrigerating capacity can be increased, and the refrigerating effect and the refrigerating uniformity of the refrigerator are improved.

Alternatively, as shown in fig. 12, a first air supply duct 1161 has a plurality of first air supply openings 1171, and the plurality of first air supply openings 1171 are sequentially arranged at intervals along the extending direction of the first air supply duct 1161. The plurality of first air supply openings 1171 can realize the air outlet of the first air supply duct 1161 along the length direction, and the air outlet uniformity is increased. Optionally, a second air supply duct 1162 has a plurality of second air supply openings 1172, and the plurality of second air supply openings 1172 are sequentially arranged at intervals along the extending direction of the second air supply duct 1162. The plurality of second air supply openings 1172 can realize the air outlet of the second air supply duct 1162 along the length direction, and the air outlet uniformity is increased.

Optionally, the first fan 84 communicates with one or more first supply air ducts 1161. The second fan 85 is in communication with one or more second supply air ducts 1162. Here, one first fan 84 can simultaneously drive the flow of the air flow in the plurality of first air supply air ducts 1161, and likewise, one second fan 85 can simultaneously drive the flow of the air flow in the plurality of second air supply air ducts 1162. And finally, the air path circulation of the refrigerator can be realized.

Optionally, the blower 8 is located at one end of the side wall 11. For example, the first fan 84 is located at one end of the first side wall 111, and the second fan 85 is located at one end of the second side wall 112. The air flow from the fan 8 flows in one direction, and the diversion of the fan 8 is reduced.

Optionally, as shown in fig. 4 to 8, the evaporator 3 is located in the evaporator cavity 132, and the number of evaporators 3 may be one or more, when the number of evaporators 3 is plural, the heat exchange effect of the air flow in the evaporator cavity 132 and the evaporator 3 can be increased, so as to further improve the refrigeration effect of the refrigerator. It should be noted that: the evaporator 3 is a plurality of air-out forms which are not limited to the application, and a plurality of evaporators 3 can be arranged in the evaporator cavity 132 for other refrigerators needing to be provided with the evaporator 3. For example, one of the front side wall and the rear side wall is provided with an air supply opening 117, the return air cover plate 2 is provided with an air path form of the return air opening, and a plurality of evaporators 3 can be arranged in the evaporator cavity 132. For another example, the return air cover plate 2 is provided with an air supply opening 117, and a bottom return air channel of the evaporator cavity 132 is formed, and a plurality of evaporators 3 can also be arranged in the evaporator cavity 132. This will not be described in detail in this application.

Optionally, the fins of the evaporator 3 all extend in the vertical direction, so that more space above the fins can be avoided, and the storage basket and other components can be conveniently placed. Specifically, the width direction of the fins of the evaporator 3 extends in the vertical direction, so that more upper space can be avoided.

Optionally, the number of the evaporators 3 is the same as and corresponds to the number of the fans 8, the plurality of evaporators 3 include a first evaporator 31 and a second evaporator 32, the first evaporator 31 is located in the evaporator cavity 132, the first evaporator 31 corresponds to the first fan 84 and is communicated with the first air supply duct 1161, and the air flow flowing into the air return opening by the first fan 84 is driven to flow through the first evaporator 31 and then flows into the first air supply duct 1161. The second evaporator 32 is located in the evaporator cavity 132, the second evaporator 32 corresponds to the second fan 85 and is communicated with the second air supply duct 1162, and the second fan 85 drives the air flow flowing into the return air inlet to flow into the second air supply duct 1162 after flowing through the second evaporator 32. Here, the first evaporator 31 cooperates with the first fan 84 to drive the airflow in the first supply duct 1161. The second evaporator 32 cooperates with the second fan 85 to drive airflow within the second supply duct 1162. In this way, the temperatures of the air flows in the first air supply duct 1161 and the second air supply duct 1162 are adjustable, and the refrigerating capacities of the first air supply duct 1161 and the second air supply duct 1162 can be ensured.

It should be noted that: the number of evaporators 3 may be one, and the two fans 8 may drive air flows through one evaporator 3 and then flow to the first air supply duct 1161 and the second air supply duct 1162, respectively. Thus, the cost can be reduced, and the installation is convenient. The number of the evaporators 3 may be larger than two, and the user may reasonably arrange the number and positional relationship of the evaporators 3 according to the space of the evaporator chamber 132.

Alternatively, as shown in fig. 4, the first evaporator 31 and the second evaporator 32 are disposed in this order in the width direction of the liner 1. Here, since the first side wall 111 and the second side wall 112 are provided in the width direction of the liner 1, the first fan 84 and the second fan 85 are also provided in the width direction of the liner 1, and therefore, the first evaporator 31 and the second evaporator 32 are also provided in the width direction of the liner 1. The air flows flowing in from the air return port are convenient to flow to the first evaporator 31 and the second evaporator 32 respectively, and the air flows in two directions are prevented from being disturbed.

It should be noted that: other arrangements of the first evaporator 31 and the second evaporator 32 are also possible, and the first evaporator 31 and the first air supply duct 1161 can be communicated, and the second evaporator 32 and the second air supply duct 1162 are all in an alternative embodiment of the present application.

Optionally, the first evaporator 31 and the second evaporator 32 are arranged at intervals, a return air cavity is defined between the first evaporator 31 and the second evaporator 32, and the return air port corresponds to and is communicated with the return air cavity. Here, the first evaporator 31 and the second evaporator 32 are arranged at intervals to form a return air cavity, and the return air port corresponds to the return air cavity, so that air flows into the return air cavity through the return air port and then respectively flows to the first evaporator 31 and the second evaporator 32 at two sides, and the mutual interference of the air flows to the two evaporators 3 can be avoided. And the return air inlet corresponds with the return air chamber, and the return air chamber can play the effect in foreign matter chamber, and the foreign matter that drops through the return air inlet can drop to the return air intracavity, then the user clear up again, can not drop in the evaporimeter 3, influences the work of evaporimeter.

Optionally, the number of the air return openings is one or more, and the plurality of the air return openings can improve the air return quantity of the refrigerator. At least one of the top of the evaporator chamber 132, the bottom of the evaporator chamber 132, and the side wall 11 of the evaporator chamber 132 facing the storage chamber 131 is provided with a return air opening. Here, the return air inlet is provided in the evaporator chamber 132, and the return air inlet is not provided in the side wall 11 of the liner 1, and the positions of the return air inlet and the air supply outlet 117 are moderate no matter where the air is discharged from the inner space 13, so that the uniformity of the airflow in the inner space 13 can be improved, and the uniformity of the temperature can be further improved. The air in each area of the inner space 13 can return to the refrigerating cavity nearby and then be recycled, so that vortex formation can be avoided, waste of air quantity is avoided, the air return quantity in the refrigerator is improved, and the refrigerating effect is finally improved.

Optionally, as shown in fig. 3 and 15, at least one of the top of the return air chamber, the side of the return air chamber facing the storage chamber 131, and the bottom of the return air chamber is provided with a return air inlet. The return air inlets are all arranged in the return air cavity, so that the loss of air flow flowing into the return air cavity can be reduced, and the smoothness of return air is improved.

Optionally, when the number of air returns is plural, the air return defining the top of the evaporator cavity 132 is the first air return 21, the air return defining the bottom of the evaporator cavity 132 is the third air return 23, and the air return defining the side wall 11 of the evaporator cavity 132 facing the storage cavity 131 is the second air return 22. The first air return port 21, the second air return port 22 and the third air return port 23 correspond to each other, so that the air inlets of the first air return port 21, the second air return port 22 and the third air return port 23 can be mixed in the air return cavity more quickly and flow into the evaporator 3 more quickly.

Optionally, the flow area of the air return opening is matched with the air return cavity, that is, the flow area of the air return opening is similar to or the same as the cross section area of the air return cavity, so that the air return quantity of the air return opening can be improved, the air return smoothness is improved, and the energy consumption is saved.

Optionally, the bottom wall 12 of the liner 1 is raised upwards to form a step 115, the compressor 96 is placed below the step 115, the return air cover plate 2 is covered above the step 115, the return air cover plate 2 and the step 115 enclose an evaporator cavity 132, and the evaporator 3 is located above the step 115. Because the refrigerator needs to be provided with components such as the compressor 96 and the condenser, the bottom wall 12 of the liner 1 protrudes upwards to form a step 115, and the lower part of the step 115 is used for avoiding the compressor 96. The present application locates the return air cover 2 above the step 115 such that the return air cover 2, the step 115 and the side wall 11 of the liner 1 can enclose the evaporator cavity 132. The evaporator 3 is located above the step 115, so that the evaporator 3 does not occupy too much space in the horizontal direction of the internal space 13, the storage volume of the storage cavity 131 is ensured, the evaporator cavity 132 is made more compact, and the heavy feeling inside the refrigerator is reduced.

The return air cover plate 2 and the step 115 form a third return air opening 23 towards the side wall 11 of the storage cavity 131, the third return air opening 23 is positioned at the bottom of the return air cover plate 2, and air flow at the bottom in the liner 1 flows into the evaporator cavity through the third return air opening 23.

Optionally, the air return cover plate 2 extends along the width direction of the liner 1, and part of the air return cover plate 2 is recessed downwards for avoiding the space above, so that a storage basket is arranged above the air return cover plate 2, and the capacity of the refrigerator is increased. For example, as shown in fig. 3, when the number of fans 8 is two, the height of the middle part of the return air cover plate is lower than the heights of the two ends, and the two ends of the return air cover plate 2 are used for being matched with the fans 8 to realize the flow of the air path. The middle part of the return air cover plate 2 is concave, so that a storage basket is conveniently placed above.

Optionally, the bottom wall 12 of the evaporator chamber 132 is provided with a drain opening 37, the drain opening 37 being used for the drainage of the defrost water of the evaporator 3. When the evaporator 3 is one, the evaporator 3 is inclined toward the drain port 37 so as to drain the defrost water of the evaporator 3.

Alternatively, when there are a plurality of evaporators 3, the number of the water discharge openings 37 may be one or more, and when there is one water discharge opening 37, the plurality of evaporators 3 share one water discharge opening 37. When there are a plurality of water discharge openings 37, at least one water discharge opening 37 is provided for each evaporator 3. When the evaporator 3 includes the first evaporator 31 and the second evaporator 32, the defrost water of both the first evaporator 31 and the second evaporator 32 can be discharged through the drain port.

In one particular embodiment, drain port 37 is located between first evaporator 31 and second evaporator 32. Here, the evaporator 3 may defrost by heating, and defrost water generated by the evaporator 3 can flow to the drain port 37 to be discharged out of the refrigerator.

Alternatively, as shown in fig. 5, the evaporator 3 is disposed obliquely toward the drain port 37 to facilitate the flow of the defrosting water. Alternatively, the first evaporator 31 is inclined downward in a direction from the first side wall 111 to the second side wall 112 so that the defrost water of the first evaporator 31 flows to the drain port 37; and/or, the second evaporator 32 is inclined downward in a direction from the second side wall 112 to the first side wall 111, so that the defrost water of the second evaporator 32 flows to the drain port 37. In this embodiment, the evaporator 3 is disposed obliquely, so that the defrosting water is discharged conveniently.

Alternatively, as shown in fig. 7, the evaporator 3 includes a windward side 342, and the windward side 342 communicates with a return air inlet, and the air flow flowing into the return air inlet flows into the evaporator 3 through the windward side 342. The refrigerator further comprises a heating pipe 33, wherein the heating pipe 33 is at least partially arranged on the windward side 342 and is used for heating the evaporator 3 to defrost.

In this embodiment, the evaporator 3 is prone to frost due to the low temperature of the evaporator 3, and particularly the windward side 342 of the evaporator 3 has a large air flow, and is in contact with the air flow, so that the influence on the smoothness of the air flow once the blockage occurs is large. Therefore, the requirement of defrosting the windward side 342 is larger, and the windward side 342 of the evaporator 3 is provided with the heating pipe 33, so that the defrosting efficiency of the evaporator 3 can be improved, and the defrosting thoroughness of the evaporator 3 can be improved.

Optionally, the heating pipe 33 is disposed at least on two adjacent walls of the evaporator 3, and the two adjacent walls include a windward side 342. Here, the heating pipes 33 are provided on both of the adjacent wall surfaces, so that the heating area of the heating pipes 33 can be increased, and the wall surface airflow flux adjacent to the windward side 342 is also large, so that the defrosting efficiency can be further improved by providing the heating wires.

Alternatively, the evaporator 3 includes a first wall surface and a second wall surface, the second wall surface being disposed opposite to the first wall surface and disposed along a thickness direction of the evaporator 3 with the first wall surface, the windward side 342 being connected between the first wall surface and the second wall surface; the windward side 342 is provided with a first heating tube 331, and the first wall surface and/or the second wall surface is provided with a second heating tube 332, and the heating tube 33 includes the first heating tube 331 and the second heating tube 332.

In this embodiment, the heating pipe 33 is not only arranged on the windward side 342, but also the heating pipe 33 is arranged on the first wall surface and/or the second wall surface, so that the contact area between the heating pipe 33 and the evaporator 3 is increased, and the defrosting efficiency is improved.

Alternatively, the evaporator 3 includes a plurality of fins 34, the plurality of fins 34 being arranged side by side. The evaporator 3 further comprises an evaporator end plate 344, the evaporator end plate 344 is arranged on the windward side 342, the evaporator end plate 344 is connected with the fins 34, and the evaporator end plate 344 protrudes out of the windward side 342; the evaporator end plate 344 is configured with perforations 345, through which the heating tube 33 passes, the perforations 345 serving to limit movement of the heating tube 33. In this embodiment, the evaporator end plate 344 protrudes out of the windward side 342, so that the heating tube 33 can be fixed, and the heating tube 33 is prevented from being moved and deformed by gravity or external influence.

Optionally, a movable plate 346 is provided on a side of the through hole 345 away from the evaporator 3, and the movable plate 346 is moved to release the restriction of the through hole 345 to the heating tube 33, so that the heating tube 33 is moved into or out of the through hole 345. In the present embodiment, the movable piece 346 facilitates the installation and removal of the heating pipe 33, so that the fin 34 and other parts of the evaporator 3 are not damaged, and the maintenance and replacement are facilitated.

The evaporator 3 further includes an evaporation tube 341, and the evaporation tube 341 is reciprocally passed through the plurality of fins 34 in sequence. The heating pipe 33 is arranged on the wall surface of the evaporator 3 in an S shape, so that the contact area between the heating pipe 33 and the evaporator 3 can be increased, and the defrosting efficiency of the heating pipe 33 to the evaporator 3 is improved.

Optionally, the refrigerator further includes a hook 347, where the hook 347 is disposed on the windward side 342, connected to the fin 34, and protrudes from the windward side 342, and the hook 347 has a bent structure opposite to the opening direction of the third sub-heating pipe 33 of the second heating pipe 332, and the third sub-heating pipe 33 of the second heating pipe 332 is disposed in the hook 347, so that the hook 347 can limit the movement of the second heating pipe 332. In the present embodiment, since the second heating pipe 332 is curved, the second heating pipe 332 can be further fixed to the hook 347. And the hook 347 is provided so that a user can determine the windward side 342, and the user can accurately place the evaporator 3 and set the heating pipe 33 when installing the evaporator 3, preventing an installation error. But also can play a role in preventing misplug of the heating pipe 33.

Optionally, when the refrigerator includes the first evaporator 31 and the second evaporator 32, the second evaporator 32 and the first evaporator 31 are sequentially arranged at intervals along the direction of the liner 1, and when the return air inlet is arranged between the first evaporator 31 and the second evaporator 32, the windward side 342 of the first evaporator 31 and the windward side 342 of the second evaporator 32 are arranged opposite, and the windward side 342 of the first evaporator 31 and the windward side 342 of the second evaporator 32 are both provided with the heating pipes 33.

In this embodiment, after the return air flows into the evaporator cavity 132, the return air flows to the first evaporator 31 and the second evaporator 32 respectively, and the windward side 342 of the first evaporator 31 and the windward side 342 of the second evaporator 32 are both provided with the heating pipes 33, so that defrosting efficiency of the first evaporator 31 and the second evaporator 32 can be ensured.

It can be understood that: when the refrigerator includes the first evaporator 31 and the second evaporator 32, each evaporator 3 may be provided with the aforementioned heating pipe 33, which will not be described herein.

Optionally, as shown in fig. 9 and 10, the refrigerator further includes a first heating wire 35, where the first heating wire 35 is disposed on the liner 1, and the first heating wire 35 is at least partially located below the fan 8, and is used for heating and defrosting the fan 8.

In this embodiment, since the blower 8 is located downstream of the evaporator 3, the refrigerant gas flowing out through the evaporator 3 passes through the blower 8, and thus the blower 8 also has a problem of frosting. The evaporator 3 is generally provided with a heating device for defrosting, the heating device has limited heat, and insufficient heat transferred to the fan 8 can cause incomplete defrosting of the fan 8. Therefore, the first heater strip 35 is arranged below the fan 8, so that defrosting efficiency of the fan 8 can be improved, thorough defrosting of the fan 8 is facilitated, smoothness of return air is improved, and refrigerating effect of the refrigerator is guaranteed.

Optionally, the bottom of the fan 8 abuts against the bottom wall 12, which means that the bottom of the fan 8 abuts against or is close to the bottom wall 12, and the first heating wire 35 is at least partially located at the side of the bottom wall 12 facing away from the fan 8. Here, since the evaporator 3, the heating tube 33, and the like are required to be disposed on the side of the bottom wall 12 facing the inner space 13, the space on the side of the bottom wall 12 facing the inner space 13 is limited, and the first heating wire 35 is disposed on the side of the bottom wall 12 facing away from the fan 8 and at least partially disposed at the bottom of the fan 8, so as to improve the defrosting efficiency of the fan 8.

In some alternative embodiments, as shown in fig. 10, the first heating wire 35 includes a first heating section 351 and a second heating section 352, the first heating section 351 being located on a side of the bottom wall 12 facing away from the inner space 13, the first heating section 351 corresponding to the blower 8 for heating the bottom of the blower 8. The second heating section 352 is located at a side of the side wall 11 facing away from the inner space 13, the second heating section 352 corresponding to the fan 8 for heating a side of the fan 8.

In this embodiment, the first heating section 351 is used for defrosting the bottom of the fan 8, and the second heating section 352 is used for defrosting the side of the fan 8, so that multidirectional defrosting of the fan 8 can be increased, and defrosting efficiency is improved.

It can be understood that: the number of the first heating wires 35 is the same as and corresponds to the number of the fans 8 one by one, that is, when the number of the fans 8 is two or more, the bottom of each fan 8 can be provided with the first heating wires 35 described in the application.

Alternatively, as shown in fig. 2, when the bottom wall 12 is provided with the drain opening 37, a portion of the bottom wall 12 is recessed downward to form a fan drain channel 81, and the fan drain channel 81 extends from below the fan 8 to the drain opening 37, so as to facilitate the drainage of the defrost water of the fan 8.

In this embodiment, when defrosting the refrigerator, the frost of the fan 8 will also melt, and the fan drainage channel 81 is provided to facilitate the discharge of the defrosting water of the fan 8.

Alternatively, the blower drain passage 81 is inclined downward in a direction from the blower 8 to the drain port 37. Here, the blower drain passage 81 is inclined downward so that the defrost water of the blower 8 can flow more smoothly under the action of gravity to drain more thoroughly.

Alternatively, the flow area of the blower drain passage 81 gradually decreases in the direction from the blower 8 to the drain port 37. Here, the initial flow area of the fan drainage channel 81 is larger, and can more receive the defrost water of the fan 8, and the flow area gradually decreases along with the flow direction of the defrost water, so that the flow speed of the defrost water can be accelerated, and the drainage thoroughness is improved.

Optionally, the bottom wall 12 is further configured with an evaporation drain channel 82, the evaporation drain channel 82 being higher than the fan drain channel 81, the evaporation drain channel 82 being in communication with the drain port 37; the evaporator 3 is located above the evaporation drain passage 82, and defrosting water of the evaporator 3 can flow to the drain port 37 along the evaporation drain passage 82. In this embodiment, the defrosted water after defrosting of the evaporator 3 can flow to the drain port 37 through the evaporation drain passage 82, and flows out from the drain port 37.

Optionally, the evaporation drain 82 slopes downward in a direction from the blower 8 to the drain port 37. Here, the evaporation drain passage 82 is inclined, so that the defrost water of the evaporator 3 can flow to the drain port 37 quickly, and the drain thoroughness can be improved.

Alternatively, as shown in fig. 11, the inclination angle of the fan drain passage 81 and the inclination angle of the evaporation drain passage 82 are different. In this embodiment, the inclination angles of the fan drainage channel 81 and the evaporation drainage channel 82 are different to avoid the mutual interference of drainage of the fan 8 and the evaporator 3.

Optionally, the evaporation drain 82 is angled more horizontally than the fan drain 81. Here, the fan drain passage 81 is located below the evaporator 3, and the evaporation drain passage 82 is inclined at a large angle, and the evaporator 3 is located above the evaporation drain passage 82 so that the evaporator 3 does not block the fan drain passage 81, so that drainage of both the fan 8 and the evaporator 3 is achieved at the same time.

Optionally, the bottom-most end of the fan 8 has a height less than the height of the evaporator 3 from the end facing the fan 8, where the fan 8 sinks a distance, and the fan drain channel 81 is lower than the evaporation drain channel 82, facilitating the drainage of the fan 8 and allowing both drain channels to drain through different angles.

Optionally, the number of the evaporation drain channels 82 is plural, a fan drain channel 81 is configured between two adjacent evaporation drain channels 82, and the evaporator 3 is located above the two adjacent evaporation drain channels 82 and covers at least part of the fan drain channels 81. In this embodiment, the evaporator 3 is covered over the fan drain passage 81, so that the evaporator 3 does not block the fan drain passage 81 from draining water, and part of the defrost water of the evaporator 3 can also flow into the fan drain passage 81 and out of the fan drain passage 81.

Alternatively, the fan drain channels 81 may be one or more, and when the fan drain channels 81 are plural, the plural fan drain channels 81 are staggered with the plural evaporation drain channels 82 to increase the drainage of the fan 8 and the evaporator 3.

Alternatively, when the plurality of fans 8 includes the first fan 84 and the second fan 85, the plurality of fan drain passages 81 includes the first drain passage 811 and the second drain passage 812, and the drain port 37 is located between the first drain passage 811 and the second drain passage 812, so that the defrost water of both fans 8 can flow to the drain port 37. It should be noted that: the number of the water discharge ports 37 may be plural, and different fan water discharge passages 81 may be respectively discharged through the corresponding water discharge ports 37.

Alternatively, the number of the evaporators 3 may be one or more, and when the number of the evaporators 3 is one, one evaporator 3 is provided on the bottom wall 12, and the drain port 37 may be located below the evaporator 3 or may be located at one side of the evaporator 3. The number of the evaporators 3 may be plural, and when the plurality of evaporators 3 includes the first evaporator 31 and the second evaporator 32, the bottom wall 12 is configured with the first drain passage 811 and the second drain passage 812, the first evaporator 31 is located above the first drain passage 811, and the second evaporator 32 is located above the second drain passage 812. In this way each evaporator 3 is capable of achieving drainage. Alternatively, both the first drain passage 811 and the second drain passage 812 communicate with the drain port 37. That is, the plurality of fan drain passages 81 and the plurality of evaporation drain passages 82 are each communicated with a drain port 37 so that the defrost water of the evaporator 3 and the fan 8 can be collected and then discharged.

Alternatively, the first drain passage 811 and the second drain passage 812 are symmetrically disposed with respect to the drain port 37, so that the drainage of the first fan 84 and the second fan 85 can be performed simultaneously, facilitating the operation. The first drain passage 811 and the first drain passage 811 are also symmetrically disposed about the drain port 37. Alternatively, the evaporation drain passage 82 corresponding to the first evaporator 31 and the evaporation drain passage 82 corresponding to the second evaporator 32 are also symmetrically disposed about the drain port 37.

Optionally, the bottom wall 12 is also partially recessed to form a transitional drain channel 83, the transitional drain channel 83 being located between the first evaporator 31 and the second evaporator 32, and the direction of extension of the transitional drain channel 83 intersecting the line connecting the first evaporator 31 and the second evaporator 32, wherein the drain opening 37 is located at the lowest of the transitional drain channel 83.

In this embodiment, the transition drain channel 83 allows water in the circumferential direction of the drain opening 37 to flow to the drain opening 37 for easy drainage. The transition drain passage 83 communicates with the outlet of the evaporation drain passage 82, and a part of the defrost water flowing out of the evaporation drain passage 82 can flow into the transition drain passage 83 before flowing into the drain port 37, so that the overflow of the water in the evaporation drain passage 82 to other positions can be avoided.

Optionally, when the bottom wall 12 forms the step 115, the fan 8 is higher than the top wall of the step 115, so that the step 115 does not block the airflow in the evaporator chamber 132 from flowing to the fan 8, and ensures the airflow rate in the air supply duct 116.

It can be understood that: when the evaporator 3 is disposed above the step 115, the top wall of the step 115 may be regarded as the bottom wall 12 of the evaporator chamber 132, which is a part of the bottom wall 12. Therefore, the technical features of the present application regarding the evaporator chamber 132 are equally applicable to the top wall of the step 115, and thus, the technical features of the top wall of the step 115 will not be described herein again when the evaporator 3 is located on the step 115.

In other alternative embodiments, as shown in fig. 9, the first heating wire 35 is at least partially located on the side of the blower drain channel 81 facing away from the interior space 13. Here, the first heating wire 35 is disposed at the back of the fan drainage channel 81, so as to facilitate increasing the temperature of the fan drainage channel 81, prevent the defrost water from being frozen again in the flowing process, and increase the flowing speed of the defrost water.

Optionally, the first heating wire 35 is matched with the fan drainage channel 81. Here, the matching of the first heating wire 35 and the fan drainage channel 81 means that the shape and the size of the first heating wire 35 are the same as or similar to those of the fan drainage channel 81, so that the heating effect of the fan drainage channel 81 can be further improved, and the defrosting efficiency of the fan 8 is further improved. In addition, since the fan drainage channel 81 is located below the evaporator 3, the first heating wire 35 can also heat the evaporator 3, and the defrosting efficiency of the evaporator 3 can be improved.

Optionally, the first heating wire 35 on the back of the blower drain passage 81 is also provided in a curved shape, and the density of the first heating wire 35 is decreased and then increased in the direction from the blower 8 to the drain port 37.

In this embodiment, the density of the portion of the first heating wire 35 close to the fan 8 is relatively high, so as to improve the defrosting efficiency of the fan 8. The density is increased near the water outlet 37, so that the frost water is prevented from being frozen and blocked at the water outlet 37, and the water outlet efficiency of the frost water is improved.

Optionally, the refrigerator includes a first fan 84 and a second fan 85, the fan drain channel 81 includes a first drain channel 811 and a second drain channel 812, the first drain channel 811 and the second drain channel 812 are disposed along a direction from the first fan 84 to the second fan 85, and a drain outlet 37 is disposed at a junction of the first drain channel 811 and the second drain channel 812, so that when water in the first drain channel 811 and the second drain channel 812 flows out through the drain outlet 37, the first heating wire 35 includes a third heating section 353 and a fourth heating section 354, the third heating section 353 is located at a side of the first drain channel 811 facing away from the inner space 13, and the third heating section 353 extends from a bottom of the first fan 84 to the drain outlet 37 and matches with the first drain channel 811. The fourth heating section 354 is located at a side of the second drain passage 812 facing away from the inner space 13 and is matched with the second drain passage 812. Wherein, third heating section 353 and fourth heating section 354 are of unitary construction.

In this embodiment, when the refrigerator is provided with two fans 8, two fan drainage channels 81 are needed to drain water, and a side of each fan drainage channel 81 away from the inner space 13 is provided with a first heating wire 35 to ensure defrosting efficiency of each fan 8 and drainage smoothness of each fan drainage channel 81.

Optionally, the first heating wire 35 further comprises a fifth heating section 355, the fifth heating section 355 being located on a side of the transition drain channel 83 facing away from the inner space 13, the fifth heating section 355 being matched to the transition drain channel 83.

In this embodiment, the fifth heating section 355 can heat the transition drain channel 83 to avoid frost blockage of water in the transition drain channel 83, so as to increase the flow speed of water in the transition drain channel 83. Thus, the density of the heating wires around the drain port 37 is further increased, thereby ensuring that the defrosting water flowing to the drain port 37 is not frozen, so that the defrosting water can flow out of the drain port 37 quickly and smoothly.

Optionally, the third heating section 353, the fourth heating section 354 and the fifth heating section 355 may be integrally formed, that is, the heating wire is formed integrally, so as to improve the convenience of manufacturing the heating wire and save the cost.

Optionally, at least one of the third heating section 353, the fourth heating section 354 and the fifth heating section 355 is independent, which facilitates individual control of defrosting of the corresponding area or component.

Optionally, the refrigerator further comprises a drain pipe in communication with the drain port 37 for draining the defrost water from the drain port 37. The refrigerator further comprises a second heating wire 36, wherein the second heating wire 36 is wound on the outer side of the drain pipe, and the second heating wire 36 and the first heating wire 35 are of an integrated structure or separated from the first heating wire 35.

In this embodiment, the second heater strip 36 is wound around the outside of the drain pipe, so that the temperature of the drain pipe can be increased, the smoothness of the drain pipe is further ensured, the water in the drain pipe is prevented from freezing, and the defrosting efficiency is improved.

Illustratively, as shown in fig. 2, the fan drain passage 81 gradually decreases in flow area in the direction from the fan 8 to the drain port 37, and the first heater wire 35 also gradually narrows in the direction from the fan 8 to the drain port 37.

The refrigerator further comprises a condenser, a compressor 96, a capillary tube 4 and an air return tube 43, the capillary tube 4 is communicated between the outlet of the condenser and the inlet of the evaporator 3, and the air return tube 43 is connected between the evaporator 3 and the outlet and the inlet of the compressor 96.

Alternatively, as shown in fig. 12, the refrigerator includes a return air tube group, and when the number of evaporators 3 is plural, the plural evaporators 3 are arranged in series. This can reduce the piping arrangement of the return pipe 43 and the capillary tube 4. Specifically, the first evaporator 31 and the second evaporator 32 are disposed in series. In this way, the temperatures of the first evaporator 31 and the second evaporator 32 can be uniformly controlled, so that the temperatures of the air flows flowing out of the two air supply channels 116 are similar or identical.

Optionally, the refrigerator further includes a first air return 431, a communication pipe 39, and a first capillary tube 41, the first air return 431 being in communication with an inlet of the compressor 96 and an outlet of the first evaporator 31. The communication pipe 39 communicates between the outlet of the first evaporator 31 and the inlet of the second evaporator 32. The first capillary tube 41 communicates between the outlet of the condenser and the inlet of the second evaporator 32. Here, the refrigerant flowing out of the condenser flows into the evaporator 3 through the first capillary tube 41, evaporates in the evaporator 3, flows into the compressor 96 through the first regenerative tube, and flows into the condenser after the compressor 96 compresses the refrigerant to high-temperature and high-pressure gas. The first capillary tube 41 and the first regenerative tube realize a flow circuit of the refrigerant in the two evaporators 3.

Alternatively, communication tube 39 is abutted against bottom wall 12, and specifically communication tube 39 is abutted against or brought close to bottom wall 12. Here, the communication pipe 39 is connected between the first evaporator 31 and the second evaporator 32, and as shown in fig. 4, the communication pipe 39 is located in the return air chamber, and the air flow flowing in from the return air port passes through the communication pipe 39. Thus, the uncertainty of hanging the communicating pipe 39 in the air and being pulled can be reduced, and the heating defrosting device can be close to a refrigerator, such as the heating pipe 33 arranged on the evaporator 3 and the first heating wire 35 arranged at the bottom of the liner 1, so that better defrosting can be performed on the communicating pipe 39 and the evaporator 3.

Alternatively, the height of the inlet of the first evaporator 31 is greater than the height of the outlet of the first evaporator 31. This facilitates the flow of refrigerant in the first evaporator 31 to the second evaporator 32 on the one hand. On the other hand, communication pipe 39 can be mostly disposed against bottom wall 12, reducing the bending of communication pipe 39, reducing the length of communication pipe 39, and facilitating installation.

Alternatively, a plurality of evaporators 3 are arranged in parallel. For example, the first evaporator 31 and the second evaporator 32 are disposed in parallel. This allows each evaporator 3 to be controlled independently, and thus the outlet air temperature of the two supply air ducts 116 to be controlled independently, avoiding the mutual interference of the two evaporators 3.

Optionally, the distance between the fan 8 and the bottom of the evaporator chamber 132 is smaller than the distance between the fan 8 and the upper end surface of the liner 1. In this embodiment, the height of the fan 8 is reduced, so that the height of the evaporator cavity 132 corresponding to the fan 8 can also be reduced, and further more upper space can be avoided, thereby increasing the volume of the liner 1.

Optionally, the return air cover plate 2 is of unitary construction. To facilitate the production and installation of the return air cover plate 2.

Alternatively, as shown in fig. 15, the return air cover plate 2 includes a plurality of sub cover plates, and the sub cover plates are detachably connected or spliced. Here, it is described. The multiple sub-covers may be disassembled or spliced together to facilitate opening the evaporator chamber 132 for servicing and replacement. And the refrigerator is convenient for accomodate and place return air apron 2 in processing, transportation, dismouting in-process.

Optionally, at least two sub-cover plates of the plurality of sub-cover plates are detachably connected with the liner 1. In this embodiment, a plurality of sub-cover plates are detachably connected with the liner 1, so that the sub-cover plates are convenient to detach, and the connection stability of the sub-cover plates is also convenient. Wherein, a plurality of sub-cover plates can be all detachably connected with the liner 1, and also can be partially connected with the liner 1.

Optionally, the plurality of sub-covers includes a first sub-cover 24, a second sub-cover 25, and a third sub-cover 26, and one end of the first sub-cover 24 is connected to the first sidewall 111. One end of the second sub-cover 25 is connected to the second side wall 112 of the liner 1, and the second side wall 112 and the first side wall 111 are disposed opposite to each other in the width direction of the liner 1. The third sub-cover plate 26 is connected between the other end of the first sub-cover plate 24 and the other end of the second sub-cover plate 25. Here, the first sub-cover 24 is connected to the first side wall 111, and the second sub-cover 25 is connected to the second side wall 112, so that the first sub-cover 24 and the second sub-cover 25 can be relatively fixed. The third sub-cover plate 26 is connected between the first sub-cover plate 24 and the second sub-cover plate 25, thereby realizing the connection of the three sub-cover plates.

Optionally, the first side wall 111 is configured with a first groove, and one end of the first sub-cover 24 is configured with a first protrusion, and the first protrusion is located in the first groove, so as to connect the first sub-cover 24 with the first side wall 111. Optionally, the second side wall 112 is configured with a second groove, and one end of the second sub-cover plate 25 is configured with a second protrusion, and the second protrusion is located in the second groove, so as to connect the second sub-cover plate 25 with the second side wall 112.

Optionally, the first sub-cover 24 is sealingly connected to the first side wall 111 and/or the second sub-cover 25 is sealingly connected to the second side wall 112. This ensures that the air flow from the evaporator chamber 132 to the fan 8 does not leak. For example, a sealing strip is provided between the first sub-cover 24 and the first side wall 111, and a sealing strip is also provided between the second sub-cover 25 and the second side wall 112.

The liner 1 further comprises a third side wall 113, the third side wall 113 is connected between the first side wall 111 and the second side wall 112, and the return air cover plate 2, the third side wall 113, the first side wall 111, the second side wall 112 and the bottom wall 12 of the liner 1 are enclosed together to form an evaporator cavity 132; wherein the first sub-cover 24 and/or the second sub-cover 25 are detachably connected to the third side wall 113.

In the present embodiment, the first side wall 111 and the second side wall 112 connect and fix the first sub-cover 24 and the second sub-cover 25 from the width direction of the liner 1. The third side wall 113 is located at a side of the evaporator 3 compartment facing away from the storage cavity 131, so that the third side wall 113 connects and fixes the first sub-cover plate 24 and the second sub-cover plate 25 at a side along the length direction of the liner 1. The whole return air cover plate 2 is fixed from three sides at least so as to ensure the connection stability of the return air cover plate 2 and avoid the return air cover plate 2 from shifting or falling off.

Optionally, the first sub-cover 24 is snap-fit or screw-connected to the third side wall 113. The second sub-cover 25 is snap-fit or screw-connected to the third side wall 113. As shown in fig. 15, one of the first sub-cover 24 and the third side wall 113 is provided with a first buckle, and the other of the first sub-cover 24 and the third side wall 113 is provided with a first slot, and when the first buckle is located in the first slot, the first sub-cover 24 is connected with the third side wall 113. One of the second sub-cover plate 25 and the third side wall 113 is provided with a second buckle, the other of the second sub-cover plate 25 and the third side wall 113 is provided with a second clamping groove, and when the second buckle is positioned in the second clamping groove, the second sub-cover plate 25 is connected with the third side wall 113. The return air flap 2 is restricted from moving up and down and back and forth by the connection of the first sub flap 24 and the second sub flap 25 to the third side wall 113.

Alternatively, the other end portion of the first sub-cover 24 is recessed downward to form a first connection stage 241, the other end portion of the second sub-cover 25 is recessed downward to form a second connection stage 251, and the third sub-cover 26 is overlapped over the first connection stage 241 and the second connection stage 251. In this embodiment, the third sub-cover plate 26 is lapped over the first connecting table 241 and the second connecting table 251, and the third sub-cover plate 26 can compress the first sub-cover plate 24 and the second sub-cover plate 25, so as to further increase the connection area and the connection stability between the three sub-cover plates.

Alternatively, when the return air cover plate 2 is covered on the step 115, the return air cover plate 2 is detachably connected with the step 115. This can further increase the connection stability of the return air cover plate 2.

Optionally, the storage chamber 131 and the evaporator chamber 132 are disposed along the length direction of the liner 1. Each sub-deck includes a top plate 271 and side plates 27, the top plate 271 being located above the steps 115. The side plate 27 is connected to one end of the top plate 271 and extends downward, and the side plate 27 is located outside the side wall 11 of the step 115 facing the storage chamber 131; wherein the top plate 271 is connected with the third side wall 113, and the side plate 27 is connected with the side wall 11 of the step 115 facing the storage chamber 131. Alternatively, the return air cover plate 2 is an L-shaped cover plate, so that the space of the return air cover plate 2 occupying the inner space 13 in the horizontal direction can be reduced,

in this embodiment, the top plate 271 is configured to enclose the step 115 to form the evaporator chamber 132. The side plate 27 serves to enclose the side of the evaporator chamber 132 on the one hand, and the side plate 27 extends downward and is connected to the step 115 on the other hand, so that the connection stability of the return air cover plate 2 can be increased.

Optionally, the side plate 27 is screwed with the side wall 11 of the step 115 facing the storage chamber 131. Specifically, the first sub-cover plate 24, the second sub-cover plate 25 and the third sub-cover plate 26 are all connected with the step 115 by screws.

In actual use, the first sub-cover plate 24 and the second sub-cover plate 25 are installed first, the positions of the buckles and the falling holes are aligned at the same time, then the third sub-cover plate 26 is pressed on the first connecting table 241 of the first sub-cover plate 24 and the second connecting table 251 of the second sub-cover plate 25, and then the third sub-cover plate 26 is connected with the liner 1 through screws, so that the connection of the three sub-cover plates is realized.

It should be noted that: the number of the screw holes and the buckles or the clamping grooves of each sub-cover plate can be one or a plurality of, the application is not particularly limited, and the number and the positions of the screw holes and the buckles or the clamping grooves can be set according to requirements.

Optionally, the third sub-cover 26 is provided with an air return port, and since the third sub-cover 26 is connected between the first sub-cover 24 and the second sub-cover 25, the air return port is provided on the third sub-cover 26, so that air return from the middle part of the air return cover 2 is facilitated.

Optionally, the third sub-cover 26 corresponds to the return air compartment. It can be understood that: the third sub-cover plate 26 encloses a return air chamber with the top wall of the step 115. Thus, when the return air cavity or the return air inlet needs to be cleaned or the evaporator 3 needs to be overhauled, only the third sub-cover plate 26 needs to be opened. Moreover, since the third sub-cover plate 26 of the present application is overlapped over the first sub-cover plate 24 and the second sub-cover plate 25, the disassembly of the first sub-cover plate 24 does not affect the first sub-cover plate 24 and the second sub-cover plate 25.

As shown in fig. 15, a first air return opening 21 is formed in the top of the third sub-cover plate 26, a second air return opening 22 is formed in the side, facing the storage cavity 131, of the third sub-cover plate 26, a third air return opening 23 is formed by enclosing the third sub-cover plate 26 and the step 115, facing the side wall 11 of the storage cavity 131, and the third air return opening 23 is located at the bottom of the third sub-cover plate 26. The first air return port 21, the second air return port 22 and the third air return port 23 are all communicated with the air return cavity. Therefore, the air return quantity can be increased, the refrigerating air flow exchanging heat with the evaporator 3 is ensured, and the refrigerating effect of the refrigerator is further improved.

Optionally, as shown in fig. 6, the refrigerator further includes a foam board 6, the foam board 6 is located in the evaporator chamber 132 and above the evaporator 3, and the foam board 6 is detachably connected to the return air cover plate 2. Here, the foam is used for performing heat insulation treatment on the upper side of the evaporator 3, so as to avoid the loss of cold energy of the evaporator 3, and ensure the heat exchange effect of the air flow and the evaporator 3.

Optionally, one of the return air cover plate 2 and the foam board 6 is provided with a third buckle, the other of the return air cover plate 2 and the foam board 6 is provided with a third clamping groove, and when the third buckle is positioned in the third clamping groove, the return air cover plate 2 is connected with the foam board 6. As shown in fig. 6, the foam board 6 is recessed inwards to form a third clamping groove, the return air cover board 2 is provided with a third buckle, the third buckle is located in the third clamping groove, the third buckle protrudes towards the third clamping groove to form an abutting plate, the upper end face of the abutting plate can abut against the lower end face of the foam board 6, and therefore the foam board 6 can be connected with the return air cover board 2 into a whole. So that the return air cover plate 2 and the foam plate 6 are connected and then are installed on the evaporator 3 and the liner 1 as a whole. Optionally, the number of the third buckles is multiple, part of the third buckles are disposed at one end of the return air cover plate 2 facing the third side wall 113, and part of the third buckles are disposed at intervals along one end of the return air cover plate 2 facing the first side wall 111. The number of the third clamping grooves is the same as that of the third clamping buckles and the third clamping grooves correspond to one another one by one. This can increase the stability of the connection of the return air cover plate 2 to the foam plate 6 without interfering with other connection components. Optionally, the foam board 6 is matched with the air return cover board 2, and the third buckle can also be arranged on the end face of the side board 27, which faces the foam board 6, so that the two opposite ends of the air return cover board 2 and the foam board 6 can be connected, and the connection stability is improved. It should be noted that: the return air cover plate 2 can be connected with the foam plate 6 in other ways, such as screws, magnetic attraction, adhesion, etc., which will not be described in detail herein.

Optionally, at least one sub-cover plate is detachably connected to the foam board 6, in particular, the first sub-cover plate 24 is detachably connected to the foam board 6 and/or the second sub-cover plate 25 is detachably connected to the foam board 6.

Alternatively, the foam board 6 is abutted against at least one side of the evaporator 3, where abutting means that the foam board 6 is abutted against or close to the evaporator 3. Wherein, the foam board 6 is at least partially recessed towards one side of the evaporator 3 to form a groove air channel 61, and the groove air channel 61 communicates the return air inlet and the evaporator 3, so that the air flow flowing in from the return air inlet can flow through the evaporator 3 from the groove air channel 61.

In this embodiment, when the return air surface of the evaporator 3 frosts, the air quantity flowing into the evaporator 3 becomes small, and the wind resistance becomes large, so that the refrigerating effect of the refrigerator is affected. The foam board 6 of the evaporator 3 is recessed to form a groove air channel 61, so that even if the return air surface of the evaporator 3 is frosted, air flow can still flow into the evaporator 3 from the groove air channel 61, and the air flow quantity of the evaporator 3 is ensured. In addition, the arrangement of the groove air channel 61 can also increase the air return quantity of the middle evaporator 3, and improve the refrigerating effect of the refrigerator. It should be noted that: the foam board 6 may not be provided above the evaporator 3, and the installation position of the foam board 6 may be selected according to the installation direction or position of the evaporator 3.

Alternatively, a plurality of fins 34 of the evaporator 3 are arranged side by side, wherein the foam board 6 is provided at one end of the fins 34, and the groove air duct 61 communicates with the gaps between the adjacent fins 34. In the present embodiment, the groove air duct 61 communicates with the gaps between the adjacent fins 34, and the fins 34 do not obstruct the flow of the air flow, so that the air flow in the groove air duct 61 can smoothly flow into the evaporator 3.

Alternatively, the groove air channel 61 extends in the extending direction of the fins 34, which facilitates the flow of air in the groove air channel 61 into the evaporator 3. One end of the groove air channel 61 is open, the other end of the groove air channel 61 is closed, air flow cannot flow away from the groove air channel 61, and the air flow can flow into the evaporator 3 after flowing into the groove air channel 61 through one end of the groove air channel.

Alternatively, the length of the groove air channel 61 is less than or equal to the length of the fins 34. This facilitates the closing of the other end of the groove air channel 61 to avoid loss of air flow.

The evaporator 3 includes a windward side 342, the windward side 342 corresponds to the return air inlet, the groove air duct 61 is communicated with the return air inlet, and one end of the groove air duct 61 is at the same side as the windward side 342, so that the air flow flowing into the return air inlet flows into the groove air duct 61. Here, the windward side 342 of the evaporator 3 is used to realize inflow of the return air flow, so that the air flow exchanges heat with the evaporator 3, and one side of the groove air channel 61 is on the same side as the windward side 342, so that when the windward side 342 is frosted and blocked, the air flow can flow into the groove air channel 61, and then flows into the evaporator 3 through the groove air channel 61, so as to ensure the refrigerating effect of the refrigerator.

Optionally, the evaporator 3 further includes an evaporation tube 341, and the evaporation tube 341 sequentially reciprocates through the plurality of fins 34. The number of the groove air channels 61 is plural, and the plural groove air channels 61 are sequentially provided along the extending direction of the evaporation tube 341.

In the present embodiment, the plurality of groove air channels 61 are provided along the extending direction of the evaporation tube 341, so that the strength of the foam board 6 can be increased, and each groove air channel 61 can be ensured to flow in the air flow.

Optionally, the refrigerator further comprises a heating tube 33, wherein the heating tube 33 is arranged between the evaporator 3 and the foam board 6, and the heating tube 33 is at least partially positioned in the groove air channel 61.

In this embodiment, the heating pipe 33 is used for heating and defrosting the evaporator 3, and the heating pipe 33 is at least partially located in the groove air channel 61, so that when the heating pipe 33 works, the wall surface of the groove air channel 61 can be heated and defrosted, and the smoothness of airflow flow is prevented from being affected by frost in the groove air channel 61.

Optionally, as shown in fig. 14, the refrigerator further includes a heat conductive plate 62, and the heat conductive plate 62 is located between the heating pipe 33 and the foam board 6 for transferring heat of the heating pipe 33. Here, the heat conductive plate 62 serves to uniformly transfer heat of the heating pipe 33 to the entire evaporator 3 to improve defrosting uniformity of the evaporator 3.

Optionally, the heat conducting plate 62 is abutted against the heating tube 33 to enhance the heat transfer capability of the heat conducting plate 62 to the heating tube 33.

Optionally, the heat conducting plate 62 is provided with a ventilation opening 63, and the ventilation opening 63 communicates with the groove air channel 61 and the evaporator 3, so that air flows in the groove air channel 61 and the evaporator 3. In this embodiment, the ventilation opening 63 facilitates the air flow in the groove air channel 61 to flow into the evaporator 3, and prevents the heat conducting plate 62 from blocking the air flow.

Optionally, the vent 63 is offset from the heating tube 33. That is, the heating pipe 33 is not provided below the ventilation opening 63, so that ventilation can be ensured and flow of air can be ensured.

Optionally, the heat conducting plate 62 is movably connected with the evaporator 3. In this embodiment, the heat-conducting plate 62 can be removed from or attached to the evaporator 3, and in use, whether or not to attach the heat-conducting plate 62 can be selected according to the arrangement density of the heating pipes 33 or the airflow amount of the evaporator 3. When the density of the heating pipes 33 is higher, the heat conducting plate 62 is arranged, so that the heating pipes 33 can be prevented from being in direct contact with the foam board 6, the foam board 6 is damaged due to overhigh local temperature, and when the distribution density of the heating pipes 33 is lower, the heating pipes 33 cannot damage the foam board 6, and the heat conducting plate 62 can be omitted.

Alternatively, the ratio of the length of the groove air channel 61 to the length of the foam board 6 along the extending direction of the fins 34 may be in the range of one third to one half. For example, when the heat-conducting plate 62 is provided, the ratio of the length of the groove air channel 61 to the length of the foam board 6 may be 1 to 2, so that the length of the groove air channel 61 can be made larger, and thus the influence of the heat-conducting plate 62 can be reduced, and the air intake is ensured. When the heat-conductive plate 62 is not provided, the ratio of the length of the groove air channel 61 to the length of the foam board 6 may be 1 to 3, and since there is no blocking of the heat-conductive plate 62, the length of the groove air channel 61 can be reduced to ensure the intake air quantity.

Alternatively, as shown in fig. 17, the side wall 11 includes a side wall body 114 and an air duct cover plate 5, the air duct cover plate 5 is located at one side of the side wall body 114 facing the inner space 13, the air duct cover plate 5 and the side wall body 114 enclose an air supply duct 116 together, the air duct cover plate 5 is configured with a plurality of air supply openings 117, and the plurality of air supply openings 117 are sequentially arranged at intervals along the extending direction of the air supply duct 116; the fan 8 is in communication with the supply air duct 116 for driving an air flow in the supply air duct 116.

In the present embodiment, the air flow of the air supply duct 116 flows into the internal space 13 through the air supply port 117 of the duct cover 5. The plurality of air supply openings 117 are arranged along the extending direction of the air supply duct 116, so that the air output of the air supply openings 117 is increased, the air flow flowing into the inner space 13 is further improved, and the refrigerating effect of the refrigerator is improved.

Optionally, the side wall body 114 is recessed towards a direction away from the inner space 13 to form the air supply groove 55, the air duct cover plate 5 is covered on one side of the air supply groove 55 towards the inner space 13, and the air duct cover plate 5 includes a plurality of sub air duct cover plates 5, and the plurality of sub air duct cover plates 5 are detachably connected or spliced.

In this embodiment, the air duct cover 5 covers a side of the air supply slot 55 facing the inner space 13, so that air flow can flow into the inner space 13 through the air supply opening 117 of the air duct cover 5. The air duct cover plate 5 is formed by connecting a plurality of sub air duct cover plates 5, so that the air duct cover plate 5 is convenient to detach and install, and the air supply groove 55 and/or the air supply opening 117 are convenient to overhaul and clean. It should be noted that: in some alternative embodiments, the air duct cover 5 may also be provided with an air return port, and the air flow in the storage cavity 131 can flow into the air supply slot 55 through the air return port, so that the air duct cover 5 may also include a plurality of sub air duct covers 5, and the plurality of sub air duct covers 5 may be detachably connected or spliced. In addition, in the embodiment of the disclosure, even if the single sub-air duct cover plate 5 is deformed and damaged, only the single sub-air duct cover plate 5 needs to be replaced, and the whole air duct cover plate 5 does not need to be replaced, so that the cost can be saved, and the maintenance is convenient.

Alternatively, as shown in fig. 17, the duct cover 5 is detachably connected to the side wall body 114.

In this embodiment, the air duct cover 5 is also detachably connected to the side wall body 114, so that the air duct cover 5 is conveniently taken out to clean the air supply groove 55 and the air port (the air supply port 117 or the air return port).

Optionally, one of the air duct cover 5 and the side wall body 114 is provided with a buckle (for convenience of distinction, hereinafter collectively referred to as a fifth buckle 535), and the other of the air duct cover 5 and the side wall body 114 is provided with a slot (for convenience of distinction, hereinafter collectively referred to as a fifth slot) adapted to the buckle, and when the fifth buckle 535 is located in the fifth slot, the air duct cover 5 is connected to the side wall body 114. In this embodiment, the air duct cover plate 5 is connected with the side wall body 114 through the fifth buckle 535 and the fifth clamping groove, which has simple structure, easy operation and processing, and lower cost.

Optionally, the plurality of sub-duct cover plates 5 include a first sub-duct cover plate 53 and a second sub-duct cover plate 532, one end of the first sub-duct cover plate 53 is configured with one of a plug board 533 and a plug slot 534, one end of the second sub-duct cover plate 532 is configured with the other one of the plug board 533 and the plug slot 534, the plug slot 534 is adapted to the plug board 533, and when the plug board 533 is located in the plug slot 534, the first sub-duct cover plate 53 is connected with the second sub-duct cover plate 532. In this embodiment, two adjacent sub-duct cover plates 5 are connected through a plug board 533 and a plug slot 534, so as to facilitate installation and disassembly.

Optionally, the air supply groove 55 includes a fan groove 552 and an air outlet groove 551, the fan groove 552 is used for placing the fan 8, the number of the air outlet grooves 551 is multiple, the air outlet grooves 551 are all communicated with one fan groove 552, and the air outlet grooves 551 are sequentially arranged at intervals along the height direction of the side wall 11; the first sub-air duct cover plate 53 is at least partially covered on one side of the fan slot 552 facing the inner space 13, the number of the second sub-air duct cover plates 532 is the same as and corresponds to the number of the air outlet slots 551 one by one, and the first sub-air duct cover plate 53 is connected with the plurality of second sub-air duct cover plates 532.

In this embodiment, the fan grooves 552 are used for placing the fans 8, and one fan groove 552 is communicated with a plurality of air outlet grooves 551, so that the air outlet of the fans 8 can flow to the plurality of air outlet grooves 551 at the same time, and air supply of a plurality of air supply channels 116 is realized. The first sub-air duct cover 53 is at least partially disposed on the fan slot 552 and is used for covering the fan 8, that is, the first sub-air duct cover 53 and the sidewall body 114 form an air supply cavity, and the fan 8 is disposed in the air supply cavity. The second sub-duct cover 532 is disposed on a side of each air outlet groove 551 facing the inner space 13, so as to realize air outlet of each side air supply duct 116.

Optionally, when the number of the air supply channels 116 is multiple, the fan 8 is located on the same side of the air supply channels 116, as shown in fig. 9 and 10, the fan 8 includes an impeller 77 and a volute 7, the impeller 77 is located in the volute 7, the volute 7 is configured with multiple air outlets, and the number of the air outlets is the same as that of the air supply channels 116 and corresponds to one.

In this embodiment, the plurality of air supply channels 116 share one fan 8, and the fan 8 is located on the same side of the plurality of air supply channels 116, and the volute 7 of the fan 8 is provided with an air outlet corresponding to the air supply channels 116, so that the air outlet of one fan 8 can flow to the plurality of air channels on the same side at the same time, so as to ensure the air flow of each air supply channel 116.

Optionally, when the same side wall 11 is provided with a plurality of air supply ducts 116, the plurality of air supply ducts 116 includes a third air supply duct 1163 and a fourth air supply duct 1164, the fan 8 includes a bottom plate 71, a first shell wall 73 and a second shell wall 74, and the first shell wall 73 is connected to one end of the bottom plate 71; the second shell wall 74 is connected to the other end of the bottom plate 71 and is disposed opposite to the first shell wall 73, the bottom plate 71, the second shell wall 74 and the first shell wall 73 enclose a containing cavity with an opening at one side, the impeller 77 is located in the containing cavity, and the opening is used for air intake. The fan 8 further comprises a volute cover plate 72, the volute cover plate 72 is arranged at the opening of the accommodating cavity in a covering mode, the volute cover plate 72 and the accommodating cavity are enclosed to form a fan cavity, and the volute cover plate 72 is provided with the air inlet 58. The fan chamber is used to house the impeller 77. The first casing wall 73 and the second casing wall 74 define a first air outlet 78 and a second air outlet 79, the first air outlet 78 is communicated with the third air supply duct 1163, the second air outlet 79 is suitable for being communicated with the fourth air supply duct 1164, and the plurality of air outlets include the first air outlet 78 and the second air outlet 79.

In this embodiment, the first air outlet 78 and the second air outlet 79 are respectively connected to the third air supply duct 1163 and the fourth air supply duct 1164, and are used for supplying air to the third air supply duct 1163 and the fourth air supply duct 1164 from one fan 8.

Alternatively, the volute cover plate 72 of the present application may be provided independently, or may be integrally formed with the fan cover plate. That is, the scroll cover 72 and the fan cover are integrated, the scroll cover 72 can be arranged at the opening of the accommodating cavity, and can also be arranged at one side of the fan groove 552 facing the inner space 13, and the scroll cover 72 is provided with the air inlet 58 communicated with the inner space 13. Therefore, a fan cover plate or a volute cover plate 72 is not required to be arranged independently, the installation is convenient, the cost is saved, the production efficiency is improved, the sealing foam is not required to seal the interface between the volute 7 and the air supply air duct 116, and the sealing performance is good. When the volute cover plate 72 is integrated with the fan cover plate, the characteristics of the fan cover plate are applicable to the volute cover plate 72, and the characteristics of the volute cover plate 72 are applicable to the fan cover plate.

Alternatively, when the volute cover plate 72 and the fan cover plate are integrated, it can be understood that: the volute cover plate 72 and the first sub-air duct cover plate 53 are combined into a whole, the first sub-air duct cover plate 53 is positioned on one side of the volute 7 facing the inner space 13, and the volute 7 and the first sub-air duct cover plate 53 jointly enclose a fan cavity; the fan 8 is located in the fan cavity. Specifically, the volute 7 is detachably connected or fixedly connected with the first sub-air duct cover plate 53. The wall section matched with the spiral case 7 is constructed on one side of the first sub-air duct cover plate 53 facing the fan groove 552, so that the connection between the first sub-air duct cover plate 53 and the spiral case 7 can be realized, and the tightness is ensured.

Optionally, as shown in fig. 18, the refrigerator further includes a wind shielding rib 56, the wind shielding rib 56 is located in the air supply duct 116, the wind shielding rib 56 is located at one side of at least one air supply opening 117, and the air supply opening 117 and the wind shielding rib 56 are sequentially arranged along the flowing direction of the air flow.

In this embodiment, the air supply opening 117 and the wind shielding rib 56 are disposed in sequence along the flow direction of the air flow, which can be understood as: the wind shielding rib 56 is located at one side of the air supply opening 117 away from the fan 8, so that the wind shielding rib 56 can block part of air flow, the air flow rebounds to form vortex after impacting the wind shielding rib 56, the air flow in the vortex flows into the air supply opening 117 again, and the air quantity of a weak wind area at one end of the air supply opening 117 away from the fan 8 can be increased. By the arrangement of the wind shielding ribs 56, the air outlet uniformity of the air supply outlet 117 is improved, and the air outlet uniformity of the refrigerator is further improved.

Optionally, the wind shielding ribs 56 are disposed on a side of the air duct cover 5 facing the air supply duct 116, and when the wind shielding ribs 56 protrude from the air duct cover 5, and the number of the wind shielding ribs 56 is plural, each wind shielding rib 56 corresponds to an air supply opening 117, and the heights of the wind shielding ribs 56 protruding from the air duct cover 5 gradually increase along the flow direction of the air flow in the air supply duct 116.

Alternatively, as shown in fig. 19, the duct cover 5 includes a cover body 51 and an air guiding structure 52, and the cover body 51 is configured with an air supply opening 117. The air guiding structure 52 is located in the air supply opening 117, and the air guiding structure 52 is configured with a plurality of air supply holes 521, and the plurality of air supply holes 521 are arranged in a honeycomb shape. The height of the air guiding structure 52 towards one side of the air supply duct 116 increases gradually along the flow direction of the air flow in the air supply duct 116.

In this embodiment, the air guiding structure 52 is disposed in the air supply opening 117, and the air guiding structure 52 can guide the air flow flowing out of the air supply opening 117, so that the air flow flowing out of the air supply opening 117 is controllable. The side of the air guiding structure 52 facing the air supply duct 116 gradually increases along with the flowing direction of the air flow, so that the resistance of the tail end of an air supply opening 117 is increased, the flowing speed of the air flow is reduced, the resistance of the tail end of the air supply opening 117 is increased, the flowing speed of the air flow is reduced, and the phenomenon that part of air outlet 521 is over-fast in air outlet speed and part of air outlet 521 returns air is avoided, so that the air outlet of the air supply opening 117 is more uniform. In addition, the plurality of honeycomb-shaped air supply holes 521 can uniformly divide the cold air into a plurality of smaller cold air flows when passing through the air supply opening 117, so that not only is the flow rate of each cold air flow smaller, but also the air output is more uniform, and the temperature of each part of the refrigerator is ensured to be more uniform. The honeycomb-shaped air supply hole 521 has strong directional air-out capability, so that air is supplied to a long distance along the direction of the air supply hole 117.

Optionally, as shown in fig. 17, the refrigerator is further provided with an anti-blocking device, hereinafter, for convenience of description, an air supply port, an air return port and the like capable of communicating the air duct and the internal space 13 are collectively referred to as an air port, wherein the air port is provided with the anti-blocking device, optionally, the anti-blocking device comprises a grille, the grille is arranged at the air port, and the number of the grille is a plurality.

Alternatively, the tuyere comprises a first tuyere, which communicates with the first air duct and the inner space 13. The first tuyere may be a supply tuyere 117. The first duct refers to a duct defined by the side wall 11, such as the air supply duct 116 of the present application, and may also refer to other forms of ducts, such as a return air duct provided by the side wall 11, and the like, which also belong to an alternative embodiment to which the anti-blocking device of the present application is applicable.

Optionally, the plurality of grids includes a first grid 1174 and a second grid 1175, where the plurality of first grids 1174 are spaced on a side of the first tuyere facing the inner space 13, and the first grids 1174 protrude from the side wall 11. The second grille 1175 is disposed to intersect the first grille 1174, the grille is disposed on a side of the first grille 1174 facing the inner space 13, and the second grille 1175 protrudes from the first grille 1174. In this embodiment, the first grille 1174 protrudes from the side wall 11, and the first grille 1174 is located on a side of the first air opening facing the inner space 13, so that the first air opening is not easily blocked by the articles contained in the inner space 13, and foreign matters can be prevented from falling into the first air opening. The second grille 1175 intersects with the first grille 1174, and the second grille 1175 protrudes out of the first grille 1174, and the second grille 1175 further protrudes out, and the air outlet ends of the first air openings are not on the same plane, so that the first air openings can be prevented from being blocked completely.

In this embodiment, the wind shielding rib 56 is disposed on the air duct cover 5, and the wind shielding rib 56 is stepped along the flow direction of the air flow, so that the air output of the air supply opening 117 gradually decreases along with the flow direction of the air flow. The wind shielding ribs 56 corresponding to the air supply outlet 117 with larger upstream air output are smaller in height, so that uniform air output of the air supply outlet 117 can be realized due to smaller vortex. The wind shielding rib 56 corresponding to the wind outlet 117 with a smaller wind outlet has a larger height, so that a larger vortex can be formed, and more airflow can be blocked, so that the wind outlet of the wind outlet 117 at the downstream. In this embodiment, through the arrangement of the stepped wind shielding ribs 56, the air outlet of the air supply outlets 117 arranged along the airflow flowing direction is more uniform, so that the air outlet of the air supply outlets 117 far away from the fan 8 can be increased, and the air outlet uniformity of the refrigerator is ensured. Particularly, when the air supply duct 116 extends along the length direction of the liner 1 and the fan 8 is located at one side of the air supply duct 116, the air supply duct 116 is longer in length, and the wind shielding ribs 56 can effectively increase the air outlet uniformity.

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 first side wall and a second side wall, the first side wall and the second side wall are arranged along the width direction of the inner container, the first side wall and the second side wall both define an air supply duct with an air supply opening, and the inner container encloses an inner space;

the air return cover plate is positioned in the inner space and divides the inner space into a storage cavity and an evaporator cavity, an outlet of the evaporator cavity is communicated with an inlet of the air supply duct, the air return cover plate is provided with an air return opening, and air flow in the storage cavity can flow into the evaporator cavity through the air return opening;

the evaporator is positioned in the evaporator cavity;

the fan is arranged in the first side wall and the second side wall, the fan is positioned in the air supply duct, and the fan can drive air flow to flow through the evaporator cavity, the air supply duct and the storage cavity, and then flow back to the evaporator cavity through the air return opening.

2. The refrigerator of claim 1, wherein the number of fans is plural, and a plurality of fans includes:

the first fan is positioned in the first side wall and communicated with the first air supply air duct, and the first side wall defines the first air supply air duct;

The second fan is positioned in the second side wall and is communicated with a second air supply air duct, the second side wall defines the second air supply air duct, and the air supply air duct comprises the first air supply air duct and the second air supply air duct;

the number of the evaporators is the same as that of the fans and corresponds to the fans one by one, and a plurality of evaporators comprise:

the first evaporator is positioned in the evaporator cavity and corresponds to the first fan, and the first fan drives the air flow flowing in from the return air inlet to flow through the first evaporator and then flow into the first air supply duct;

the second evaporator is positioned in the evaporator cavity and corresponds to the second fan, and the second fan drives the air flow flowing in from the return air inlet to flow through the second evaporator and then flow into the second air supply duct.

3. The refrigerator of claim 2, wherein the first evaporator and the second evaporator are disposed in sequence along a width direction of the liner.

4. The refrigerator of claim 3, wherein the first evaporator and the second evaporator are arranged at intervals, a return air cavity is defined between the first evaporator and the second evaporator, and the return air port corresponds to and is communicated with the return air cavity.

5. The refrigerator according to claim 4, wherein,

at least one of the top of the return air cavity, the side surface of the return air cavity, which faces the storage cavity, and the bottom of the return air cavity is provided with the return air opening.

6. The refrigerator according to claim 2, wherein,

the bottom wall part of the liner is upwards raised to form a step, the lower part of the step is used for placing a compressor, the return air cover plate is covered above the step, the return air cover plate and the step enclose the evaporator cavity, and the evaporator is positioned above the step.

7. The refrigerator according to claim 2, wherein,

the bottom wall of the evaporator cavity is provided with a water outlet, and the water outlet is positioned between the first evaporator and the second evaporator.

8. The refrigerator according to claim 7, wherein,

the first evaporator is inclined downwards along the direction from the first side wall to the second side wall so that the defrosting water of the first evaporator flows to the water outlet; and/or, the second evaporator is inclined downwards along the direction from the second side wall to the first side wall, so that the defrosting water of the second evaporator flows to the water outlet.

9. The refrigerator according to claim 2, wherein,

the number of the first air supply channels is multiple, and the multiple first air supply channels are sequentially arranged at intervals along the height direction of the first side wall; and/or the number of the groups of groups,

the number of the second air supply channels is multiple, and the second air supply channels are sequentially arranged at intervals along the height direction of the second side wall.

10. The refrigerator according to any one of claims 1 to 9, characterized in that,

the distance between the fan and the bottom wall of the evaporator cavity is smaller than the distance between the fan and the upper end face of the inner container.

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