CN218846621U - Air duct cover plate and refrigeration equipment - Google Patents

Abstract

The application relates to the technical field of refrigeration equipment and discloses an air duct cover plate and refrigeration equipment. The wind channel apron is suitable for and encloses with external component and closes formation air supply wind channel, the wind channel apron includes: a cover plate body which is provided with an air supply outlet; the air guide structure is positioned in the air supply port, the air guide structure is provided with a plurality of air supply holes, and the air supply holes are arranged in a honeycomb shape; the air guide structure is arranged on the air supply duct, and the height of the air guide structure towards one side of the air supply duct is gradually increased along the flowing direction of air flow in the air supply duct. One side that wind-guiding structure faced the air supply wind channel increases along with the flow direction of air current gradually, makes the terminal resistance of supply-air outlet increase like this, has reduced the flow velocity of air current, avoids partial supply-air outlet air-out wind speed too fast, causes the phenomenon of partial supply-air outlet return air to make the air-out of supply-air outlet more even.

Description

Air duct cover plate and refrigeration equipment

Technical Field

The application relates to the technical field of refrigeration equipment, for example to an air duct cover plate and refrigeration equipment.

Background

At present, the horizontal freezer of large-scale foaming door on the market generally adopts the refrigeration mode of direct cooling, and in the use, along with the increase of the number of times of opening and closing the door, can frost even freeze on the freezer inner bag, bring the defrosting problem for the user, also can lead to storage space to reduce simultaneously, the problem that the energy consumption rises.

The related art provides an air-cooled refrigerator, and the air-cooled refrigerator is equipped with the air-cooled subassembly, and the air-cooled subassembly generally includes evaporimeter chamber, evaporimeter, fan and wind channel etc.. The evaporator exchanges heat with the airflow to form refrigerating airflow, and the fan is used for driving the refrigerating airflow to flow. The air duct is provided with an air supply outlet, and the distances between different positions of the air supply outlet and the fan are different.

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:

in the refrigerator in the related art, the distances between different positions of the air supply opening and the fan are different, so that air is not uniformly discharged from all positions of the air supply opening, and the air discharge of the refrigeration equipment is not uniform. It is noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the application and therefore may include information that does not form the prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

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 nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air duct cover plate and refrigeration equipment, so that the air outlet uniformity of the refrigeration equipment is improved.

The embodiment of the present disclosure provides an air duct cover plate, the air duct cover plate is suitable for enclosing with external component and closes formation air supply air duct, the air duct cover plate includes: a cover plate body which is provided with an air supply outlet; the air guide structure is positioned in the air supply port, the air guide structure is provided with a plurality of air supply holes, and the air supply holes are arranged in a honeycomb shape; the air guide structure is arranged on the air supply duct, and the height of the air guide structure towards one side of the air supply duct is gradually increased along the flowing direction of air flow in the air supply duct.

The embodiment of the disclosure also provides a refrigeration device, which comprises the air duct cover plate in any one of the embodiments.

The air duct cover plate and the refrigeration equipment provided by the embodiment of the disclosure can realize the following technical effects:

set up wind-guiding structure in the supply-air outlet, wind-guiding structure can carry out the wind-guiding to the air current that the supply-air outlet flows to make the air current that the supply-air outlet flows controllable. One side that wind-guiding structure faced the air supply wind channel increases along with the flow direction of air current gradually, makes the terminal resistance of supply-air outlet increase like this, has reduced the flow velocity of air current, avoids partial supply-air outlet air-out wind speed too fast, causes the phenomenon of partial supply-air outlet return air to make the air-out of supply-air outlet more even. In addition, the plurality of honeycomb-shaped air supply holes can uniformly divide cold air into a plurality of small cold air flows when the cold air passes through the air supply opening, so that the flow of each cold air flow is smaller, 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 has strong directional air outlet capacity, so that air is supplied to a longer distance along the direction of the air supply outlet.

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 in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural view of a refrigerator provided by the embodiment of the present disclosure;

FIG. 2 is a schematic view of another liner structure provided in the embodiments of the present disclosure;

fig. 3 is an exploded view of an inner container according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of an air guiding structure provided in the embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a structure of two evaporators provided in the embodiment of the present disclosure;

fig. 6 is a schematic view of an exploded view of a return air cover according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural view of a sidewall provided by embodiments of the present disclosure;

fig. 8 is a schematic structural view of another perspective of an inner container provided by an embodiment of the present disclosure;

FIG. 9 is a schematic view of another sidewall configuration provided by embodiments of the present disclosure;

FIG. 10 is a schematic view of a bottom wall construction provided by embodiments of the present disclosure;

FIG. 11 is a schematic structural view of a liner and a return air cover plate according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a duct cover according to an embodiment of the present disclosure;

fig. 13 is a schematic structural view of a bottom wall of a liner provided in an embodiment of the present disclosure.

Reference numerals:

1. an inner container; 11. a side wall; 111. a first side wall; 112. a second side wall; 113. a third side wall; 114. a sidewall body; 115. a step; 116. an air supply duct; 1161. a first air supply duct; 1162. a second air supply duct; 1163. a third air supply duct; 1164. a fourth air supply duct; 1167. a fourth air supply outlet; 117. an air supply outlet; 1171. a first air supply outlet; 1172. a second air supply outlet; 12. a bottom wall; 121. air duct ribs; 122. a wind guide groove; 123. an air outlet cover plate; 124. a first notch; 13. an interior space; 131. a storage chamber; 132. an evaporator chamber; 2. a return air cover plate; 21. a first air return opening; 22. a second air return inlet; 23. a third air return inlet; 24. a first sub-cover plate; 241. a first connection station; 25. a second sub-cover plate; 251. a second connecting 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 a tube; 34. a fin; 342. the windward side; 37. a water outlet; 5. an air duct cover plate; 51. a cover plate body; 52. a wind guide structure; 521. an air supply hole; 523. a frame; 524. a partition plate; 525. a sub air supply outlet; 53. a first sub-air duct cover plate; 532. a second sub-air duct cover plate; 533. a plugboard; 534. inserting grooves; 535. a fifth buckle; 55. a wind feeding groove; 551. an air outlet groove; 552. a fan groove; 56. a wind-blocking rib; 58. an air inlet; 6. a foam board; 61. a groove air duct; 7. a volute; 71. a base plate; 72. a volute cover plate; 73. a first shell wall; 74. a second shell wall; 77. an impeller; 78. a first air outlet; 79. a second air outlet; 8. a fan; 84. a first fan; 85. a second fan; 9. a fourth evaporator; 93. a third evaporator; 94. a cabinet housing; 95. a door body; 96. a compressor.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. 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 be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and claims of the embodiments of the disclosure and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate for the embodiments of the disclosure described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can 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. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in fig. 1 to 13, an embodiment of the present disclosure provides a refrigerator, in particular, an air-cooled freezer, and more particularly, an air-cooled horizontal freezer. The freezer includes box and door body 95, and door body 95 activity is located the top of box. The box includes case shell 94, inner bag 1 and foaming layer, and inner bag 1 is located inside case shell 94, and the foaming layer is located between case shell 94 and inner bag 1. Optionally, the foamed layer is a thermal insulation material.

The inner container 1 includes a bottom wall 12 and a side wall 11, and the side wall 11 includes 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 oppositely arranged and are respectively positioned at the front end and the rear end of the bottom wall 12, and the front side wall and the rear side wall both extend upwards. The left and right side walls are disposed opposite to each other, and the left and right side walls are located at left and right ends of the bottom wall 12, respectively, and extend upward. The bottom wall 12, the front side wall, the rear side wall, the left side wall and the right side wall together enclose an interior space 13. The inner space 13 has an opening facing upward, and a door 95 is movably provided above the opening.

For convenience of description, as shown in fig. 11, the present application defines a front-back direction as a width direction and a left-right direction as a length direction.

The embodiment of the present disclosure provides a refrigerator, the inner container 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 inner container 1, and the first side wall 111 and the second side wall 112 both 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 correspondingly, the second sidewall 112 may be a front sidewall or a rear sidewall. It can be understood that: each of the front and rear side walls defines a supply air duct 116 having a supply air outlet 117. Thus, air can be discharged from the inner space 13, and air cooling can be realized.

The freezer also comprises a return air cover plate 2, the return air cover plate 2 is positioned 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 store items to be frozen, such as meat, seafood, or tea leaves. The evaporator cavity 132 is used for generating a cooling airflow, the cooling airflow can flow from the evaporator cavity 132 to the air supply duct 116, flow into the storage cavity 131 from the air supply opening 117, exchange heat with objects in the storage cavity 131, then flow back into the evaporator cavity 132 to be cooled again, and flow back to the air supply duct 116 to circulate. 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 2 may have various shapes such as an L-shape, an inclined shape, etc. The evaporator chamber 132 can also be a variety of shapes and located in different locations within the interior space 13. For example, the evaporator cavity 132 can be located at the left, middle or right end of the interior space 13, and in practical applications, the evaporator cavity 132 and the storage cavity 131 can be arranged according to the structure of the refrigerator interior space 13.

The cooler also includes an evaporator 3 and a fan 8, the evaporator 3 being located within the evaporator cavity 132. Alternatively, the fan 8 and the supply air duct 116 are located on the same side wall 11, and the fan 8 is communicated with the supply air duct 116. The fan 8 can drive the air flow to flow through the evaporator cavity 132, the air supply duct 116 and the storage cavity 131, and then the air flow flows back to the evaporator cavity 132 through the air return opening, so as to form a circulation air path. Here, the evaporator 3 is used to exchange heat with the airflow within the evaporator chamber 132 to form a refrigerated airflow. The fan 8 powers the airflow flow. Fan 8 and air supply duct 116 all are located same lateral wall 11, and the air current flow direction air supply duct 116 that can fan 8 flow out need not to pass through the right angle turning like this, can reduce the loss of air current, improves the refrigeration effect of freezer, reduces the energy consumption.

Optionally, as shown in fig. 11, a plurality of fans 8 are disposed in each of the first side wall 111 and the second side wall 112, the plurality of fans 8 includes a first fan 84 and a second fan 85, the first fan 84 is disposed in the first side wall 111, the first fan 84 is communicated with a 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 communicated with the 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. The thick arrows in fig. 11 indicate the air blowing directions of the first and second side walls 111 and 112, and the thin arrows in fig. 11 indicate the air flow directions in the storage chamber.

In this embodiment, the air current of freezer flows out from first lateral wall 111 and second lateral wall 112 and returns from the return air inlet return air of return air apron 2, can shorten the flow distance of outflow air current, reduces the air current and flows the in-process and receive blockking of centre sill, improves the air-cooled refrigeration effect of freezer. Especially, the refrigerating effect of the large horizontal refrigerator can be obviously improved, and the frosting effect of the inner container 1 can be reduced due to the adoption of air cooling, so that the frostless effect of the refrigerator is realized, and the defrosting effect is solved.

Alternatively, when the number of the air supply ducts 116 is one or more, and the number of the air supply ducts 116 is plural, the plural air supply ducts 116 are sequentially provided at intervals in the height direction of the side wall 11.

Optionally, when the number of the first air supply ducts 1161 is one or more, and the number of the first air supply ducts 1161 is more than one, the plurality of first air supply ducts 1161 are sequentially arranged at intervals along the height direction of the first side wall 111; and/or, when there are one or more second air supply ducts 1162 and there are multiple second air supply ducts 1162, multiple second air supply ducts 1162 are sequentially arranged at intervals in the height direction of the second side wall 112. In this embodiment, the arrangement of the first air supply ducts 1161 and/or the second air supply ducts 1162 enables the air outlet of the refrigerator to be blown to each corner of the inner container 1, so as to improve the refrigeration effect of the refrigerator.

Optionally, the air duct 116 of one sidewall 11 may be disposed at least one of the upper portion, the middle portion, and the lower portion of the sidewall 11, so as to realize air outlet to different positions of the liner 1.

As shown in fig. 7, for example, two air supply ducts 116 are provided on one side wall 11, and one air supply duct 116 is provided on each of the upper portion and the lower portion of the side wall 11, where the upper air supply duct 116 is used for cooling the middle upper portion of the freezer, and the lower air supply duct 116 is used for cooling the middle lower portion of the freezer, so that rapid cooling of the freezer can be achieved.

In an example, two air supply ducts 116 are provided for one side wall 11, and one air supply duct 116 is provided at each of the upper portion and the middle portion of the side wall 11, so that the middle upper portion of the inner container 1 can be cooled.

Illustratively, two air supply ducts 116 are respectively arranged on the first side wall 111 and the second side wall 112, specifically, the number of the first air supply ducts 1161 is two, one first air supply duct 1161 is located at the upper portion of the first side wall 111 and is used for realizing air outlet at the middle upper portion of the inner container 1, and one first air supply duct 1161 is located at the lower portion of the first side wall 111 and is used for realizing air outlet at the middle lower portion of the inner container 1. Similarly, the number of the second air supply ducts 1162 is two, one second air supply duct 1162 is located at the upper portion of the second side wall 112 and is used for realizing air outlet at the upper middle portion of the inner container 1, and the other second air supply duct 1162 is located at the lower portion of the second side wall 112 and is used for realizing air outlet at the lower middle portion of the inner container 1.

In some alternative embodiments, the number of the first air supply ducts 1161 is the same as that of the second air supply ducts 1162, and there is a one-to-one correspondence. Therefore, air is uniformly discharged from the front side and the rear side in the refrigerator, and the air discharging uniformity of the refrigerator is improved. In other alternative embodiments, as shown in fig. 7 and 9, the number of the first air supply ducts 1161 is different from the number of the second air supply ducts 1162, so that the air outlet positions and the air outlet amount of two opposite sides of the refrigerator may be different, and the air outlet positions of the two sides may be complementary to each other, so as to increase the air outlet area of the refrigerator. Or different numbers of air supply ducts 116 can be arranged according to the requirements of different side walls 11, so that the use flexibility of the refrigerator is improved.

Alternatively, the first side wall 111 is provided with two first air supply ducts 1161, the second side wall 112 is provided with one second air supply duct 1162, the two first air supply ducts 1161 are respectively located at the middle portion and the upper portion of the first side wall 111, and the second air supply duct 1162 is located at the upper portion of the second side wall 112. The first sidewall 111 is a rear sidewall, and the second sidewall 112 is a front sidewall. Therefore, the rear side wall is provided with more air supply ducts 116 to realize refrigeration, and the front side wall is provided with smaller air supply ducts 116 to reduce heat loss of the air supply ducts 116.

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

Optionally, the first air supply duct 1161 extends along the length direction of the liner 1, and/or the second air supply duct 1162 extends along the length direction of the liner 1. Because the length of freezer inner bag 1 is longer, consequently, air supply duct 116 extends along the length direction of inner bag 1, can increase air supply area and refrigerating output, improves the refrigeration effect and the refrigeration homogeneity of freezer.

Optionally, a first air supply duct 1161 has a plurality of first air supply outlets 1171, and the plurality of first air supply outlets 1171 are sequentially arranged at intervals along the extending direction of the first air supply duct 1161. The plurality of first air supply outlets 1171 can realize air supply of the first air supply duct 1161 along the length direction, so that the uniformity of air supply is improved. 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 outlets 1172 can realize air outlet of the second air supply duct 1162 along the length direction, so that air outlet uniformity is improved.

Optionally, the first fan 84 is in communication 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 air flow in the plurality of first air supply paths 1161, and similarly, one second fan 85 can simultaneously drive the flow of air flow in the plurality of second air supply paths 1162. Finally, the air path circulation of the refrigerator can be realized.

Optionally, the fan 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. Thus, the airflow from the fan 8 flows in one direction, and the split flow of the fan 8 is reduced.

Alternatively, as shown in fig. 7 and 8, when a plurality of air supply ducts 116 are provided in one side wall 11, at least two air supply ducts 116 of the plurality of air supply ducts 116 include a third air supply duct 1163 and a fourth air supply duct 1164; wherein, part of the side wall 11 is recessed towards the direction departing from the inner space 13 to form a third air supply duct 1163 and/or part of the side wall 11 is protruded towards the inner space 13 to form a fourth air supply duct 1164.

In this embodiment, the inward depression of the third air supply duct 1163 can be understood as: the inner container 1 protrudes toward the foamed layer to form the third air blowing duct 1163, which can reduce the occupied one side of the internal space 13 and save one side of the internal space 13. The fourth air supply duct 1164 protrudes toward the inside, so that the air supply opening 117 of the fourth air supply duct 1164 extends into the internal space 13, the air output of the fourth air supply duct 1164 can be increased, and the refrigeration effect on the internal space 13 is improved. Therefore, the freezer that this disclosure embodiment provided can enough save space, can also improve the refrigeration effect of freezer.

Alternatively, fourth air duct 1164 has a plurality of air blowing ports 117, and air blowing directions of air blowing ports 117 are different.

In this embodiment, the fourth air supply duct 1164 protrudes from the internal space 13, and the air supply ports 117 are provided to increase the air supply amount of the fourth air supply duct 1164.

Alternatively, as shown by arrows in fig. 8, the plurality of blow ports 117 includes a horizontal blow port and a vertical blow port, and the horizontal blow port extends in the horizontal direction for blowing air in the horizontal direction. The vertical air supply outlet extends along the vertical direction and is used for supplying air to the vertical direction. In this embodiment, the horizontal air supply outlet blows out air towards the horizontal direction, and the air current can blow the opposite side wall 11, refrigerates the article in the inner space 13. The vertical air supply outlet is used for supplying air to the vertical direction, so that the air flow can flow to the upper part or the lower part and then flow to the air return inlet, and the air supply range of the refrigerator can be improved.

Optionally, the vertical air supply outlet is located below the fourth air supply duct 1164, and is used for discharging air to the lower portion of the internal space 13. In this embodiment, the vertical air supply opening faces downward, and after flowing out from the vertical air supply opening, the cooling air flow can flow to the bottom wall 12 of the inner container 1, then flow to the opposite side wall 11 along the bottom wall 12, and part of the air flow floats upwards to cool the articles in the inner space 13.

Optionally, the opening area of the horizontal air supply opening is larger than that of the vertical air supply opening. Because the air current that the horizontal supply-air outlet flows is direct to contact with article, make the amount of wind of horizontal air outlet great like this to guarantee the refrigeration effect of freezer. Illustratively, the area ratio of the vertical air supply opening to the horizontal air supply opening is one sixth to one half.

Optionally, both the third air supply duct 1163 and the fourth air supply duct 1164 extend along the length direction of the liner 1, and the third air supply duct 1163 is located above the fourth air supply duct 1164. In this embodiment, the third air supply duct 1163 is located below the fourth air supply duct 1164, so that the air outlet range of the third air supply duct 1163 is wider, and the third air supply duct 1163 is convenient to output air downwards or upwards.

Illustratively, the third air supply duct 1163 is located at an upper portion of the sidewall 11, the fourth air supply duct 1164 is located at a middle portion of the sidewall 11, and the fourth air supply duct 1164 has a horizontal air outlet and a downward vertical air outlet.

Optionally, a fourth air supply outlet 1167 is provided at the end of the fourth air supply duct 1164, and the fourth air supply outlet 1167 communicates the fourth air supply duct 1164 with the internal space 13. This reduces the airflow loss in the fourth supply air duct 1164 and increases the air output.

Optionally, the foaming layer corresponding to the fourth air supply duct 1164 is recessed toward a direction away from the internal space 13, so as to increase the flow area of the fourth air supply duct 1164.

It should be noted that: the fourth air supply path 1164 may be located at the lower portion or the middle portion of the side wall 11, and the number of the fourth air supply paths 1164 may be one or more. The side wall 11 may be provided with only the fourth supply air path 1164. In practical use, the fourth air supply duct 1164 and the third air supply duct 1163 may be provided according to requirements, and the application is not limited specifically herein.

Optionally, the evaporator 3 is located in the evaporator cavity 132, the number of the evaporators 3 may be one or more, and when the evaporators 3 are multiple, the heat exchange effect of the air flows in the evaporators 3 and the evaporator cavity 132 can be increased, so as to improve the refrigeration effect of the refrigerator. It should be noted that: the number of evaporators 3 is not limited to the air outlet form used in the present application, and a plurality of evaporators 3 may be provided in the evaporator chamber 132 for other refrigerators in which the evaporators 3 are required to be provided. For example, the air supply opening 117 is provided in one of the front side wall and the rear side wall, the return air cover 2 is provided with an air path type return air opening, and a plurality of evaporators 3 may be provided in the evaporator chamber 132. For example, the return air cover 2 may be provided with a supply port 117, the evaporator chamber 132 may be provided with a bottom return air passage, and the evaporator chamber 132 may be provided with a plurality of evaporators 3. This is not described in detail in the present application. Optionally, the fins of the evaporator 3 extend in the vertical direction, so that more space above the evaporator can be avoided, and storage baskets and other components can be conveniently placed. Specifically, the width direction of the fins of the evaporator 3 extends in the vertical direction, and more upper spaces can be avoided.

Optionally, as shown in fig. 5, the number of the evaporators 3 is the same as that of the fans 8 and corresponds to one another, 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 first fan 84 drives the airflow flowing in from the air return opening to flow into the first air supply duct 1161 after flowing through the first evaporator 31. 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 airflow flowing into the air return opening to flow into the second air supply duct 1162 after flowing through the second evaporator 32. Here, the first evaporator 31 is engaged with the first fan 84, and drives the airflow in the first blowing air passage 1161. The second evaporator 32 cooperates with the second fan 85 to drive airflow in the second supply air path 1162. In this way, the temperatures of the airflows in the first and second air supply ducts 1161 and 1162 are both adjustable, and the cooling capacities of the first and second air supply ducts 1161 and 1162 can be ensured.

It should be noted that: the number of the evaporators 3 may also be one, and the two fans 8 drive the airflow to flow 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 can reasonably arrange the number and the position relationship of the evaporators 3 according to the space of the evaporator chamber 132.

Alternatively, the first evaporator 31 and the second evaporator 32 are sequentially disposed along the width direction of the liner 1. Here, since the first and second sidewalls 111 and 112 are disposed in the width direction of the inner tub 1, the first and second fans 84 and 85 are also disposed in the width direction of the inner tub 1, and thus the first and second evaporators 31 and 32 are also disposed in the width direction of the inner tub 1. Therefore, the air flows flowing into the air return opening respectively flow to the first evaporator 31 and the second evaporator 32, and the air flows in two directions are prevented from being interfered.

It should be noted that: the first evaporator 31 and the second evaporator 32 may be arranged in other manners, and the manner of communicating the first evaporator 31 with the first air supply duct 1161 and the manner of communicating the second evaporator 32 with the second air supply duct 1162 are all optional embodiments of the present application.

Optionally, the first evaporator 31 and the second evaporator 32 are arranged at intervals, and a return air cavity is defined between the first evaporator 31 and the second evaporator 32, and the return air inlet corresponds to and is communicated with the return air cavity. Here, the first evaporator 31 and the second evaporator 32 are disposed at an interval to form a return air chamber, and the return air inlet corresponds to the return air chamber, so that the air flows into the return air chamber through the return air inlet and then flows to the first evaporator 31 and the second evaporator 32 on both sides, respectively, thereby preventing the air flows flowing to the two evaporators 3 from interfering with each other.

Optionally, the number of the return air inlets is one or more, and the plurality of return air inlets can increase the return air quantity of the refrigerator. At least one of the top of the evaporator cavity 132, the bottom of the evaporator cavity 132, and the sidewall 11 of the evaporator cavity 132 facing the storage cavity 131 is provided with a return air opening. Here, the air return opening is provided in the evaporator cavity 132, and the air return opening is not provided in the side wall 11 of the inner container 1, and the positions of the air return opening and the air supply opening 117 are relatively moderate no matter where the air is discharged from the internal space 13, so that the uniformity of the airflow flowing in the internal 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 be returned to the refrigerating cavity nearby and then recycled, vortex can be avoided, waste of air volume is avoided, air return volume in the refrigerator is improved, and the refrigerating effect is finally improved.

Optionally, 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 inlet is 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 the air returns is plural, the air return defining the top of the evaporator cavity 132 is the first air return 21, the air return at the bottom of the evaporator cavity 132 is the third air return 2323, and the air return of the evaporator cavity 132 facing the sidewall 11 of the storage cavity 131 is the second air return 22. The first air return opening 21, the second air return opening 22 and the third air return opening 2323 correspond to each other, so that the intake air from the first air return opening 21, the second air return opening 22 and the third air return opening 2323 can be mixed in the air return cavity more quickly and flow into the evaporator 3 quickly.

Optionally, the flow area of the return air inlet is matched with the return air cavity, namely, the flow area of the return air inlet is close to or the same as the sectional area of the return air cavity, so that the return air quantity of the return air inlet can be increased, the smoothness of the return air is improved, and the energy consumption is saved.

Optionally, the bottom wall 12 of the inner container 1 partially protrudes upward to form a step 115, the compressor 96 is placed below the step 115, the return air cover plate 2 covers the step 115, the return air cover plate 2 and the step 115 enclose the evaporator cavity 132, and the evaporator 3 is located above the step 115. The freezer needs to be provided with a compressor 96, a condenser and other components, so the bottom wall 12 of the inner container 1 protrudes upwards to form a step 115, and the lower part of the step 115 is used for avoiding the compressor 96. This application locates the top of step 115 with return air apron 2, and the lateral wall 11 of return air apron 2, step 115 and inner bag 1 can enclose out the evaporimeter chamber 132 like this. The evaporator 3 is positioned above the step 115, so that the evaporator 3 does not occupy too much space in the horizontal direction of the inner space 13, the storage volume of the storage cavity 131 is ensured, the evaporator cavity 132 is more compact, and the heavy feeling in the refrigerator is reduced.

Optionally, the return air cover plate 2 and the step 115 form a third return air inlet 23 towards the side wall of the storage chamber, and the third return air inlet 23 is located at the bottom of the return air cover plate 2.

Optionally, the bottom wall 12 of the evaporator chamber 132 is provided with a drain 37, the drain 37 being used for the discharge of 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 defrosted water of the evaporator 3.

Alternatively, when the number of evaporators 3 is plural, the number of the drain ports 37 may be one or plural, and when the number of the drain ports 37 is one, the plurality of evaporators 3 share one drain port 37. When the number of the water discharge ports 37 is plural, at least one water discharge port 37 is provided for each evaporator 3. When the evaporator 3 includes the first evaporator 31 and the second evaporator 32, the defrosting water of both the first evaporator 31 and the second evaporator 32 can be discharged through the drain.

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

Alternatively, 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 sidewall 111 to the second sidewall 112 so that the defrost water of the first evaporator 31 flows to the drain opening 37; and/or, the second evaporator 32 is inclined downward in a direction from the second sidewall 112 to the first sidewall 111, so that the defrosting water of the second evaporator 32 flows to the drain opening 37. In this embodiment, the evaporator 3 is disposed obliquely to facilitate the discharge of the defrosting water.

Alternatively, as shown in fig. 5, the evaporator 3 includes a windward side 342, the windward side 342 communicates with a return air inlet, and the air flowing from the return air inlet flows into the evaporator 3 through the windward side 342. The refrigerator also comprises a heating pipe 33, and at least part of the heating pipe 33 is arranged on the windward side 342 and used for heating the evaporator 3 to defrost.

In this embodiment, because the temperature of the evaporator 3 is low, the evaporator 3 is prone to frost formation, and particularly, the windward side 342 of the evaporator 3 has a large airflow and contacts with the airflow more, and once the evaporator is blocked, the flowing smoothness of the airflow is greatly affected. Therefore, the defrosting requirement of the windward side 342 is large, and the heating pipe 33 is arranged on the windward side 342 of the evaporator 3, so that the defrosting efficiency of the evaporator 3 can be improved, and the defrosting thoroughness of the evaporator 3 can be improved.

Alternatively, the heating pipe 33 is disposed on at least two adjacent walls of the evaporator 3, and the two adjacent walls include the windward side 342. Here, the heating area of the heating pipe 33 can be increased by providing the heating pipe 33 on both the adjacent wall surfaces, and the flow rate of the wall surface airflow adjacent to the windward surface 342 is also large, so that the defrosting efficiency can be further increased by providing the heating wire.

In this embodiment, the heating pipe 33 is not only disposed on the windward side 342, but also the heating pipe 33 is disposed 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.

Optionally, the distance between the fan 8 and the bottom of the evaporator cavity 132 is smaller than the distance between the fan 8 and the upper end face of the inner container 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 be reduced, and further more upper space can be avoided, and the volume of the inner container 1 is increased.

Optionally, the return air cover plate 2 is of a one-piece construction. So as to facilitate the production and installation of the return air cover plate 2.

Optionally, the return air cover plate 2 comprises a plurality of sub cover plates, and the sub cover plates are detachably connected or spliced with each other. Here. The multiple sub-cover plates can be disassembled or spliced, so that the evaporator cavity 132 can be opened for maintenance and replacement. And the freezer is convenient for accomodate and place return air apron 2 in processing, transportation, dismouting in-process.

Optionally, at least two of the plurality of sub-cover plates are detachably connected with the liner 1. In this embodiment, a plurality of sub-apron can be dismantled with inner bag 1 and be connected, the dismantlement of the sub-apron of being convenient for, the connection stability of the sub-apron of also being convenient for. The plurality of sub-cover plates can be detachably connected with the inner container 1, and part of the sub-cover plates can be connected with the inner container 1.

Alternatively, as shown in fig. 6, the plurality of sub-cover plates includes a first sub-cover plate 24, a second sub-cover plate 25, and a third sub-cover plate 26, and one end of the first sub-cover plate 24 is connected to the first sidewall 111. One end of the second sub-cover plate 25 is connected to the second sidewall 112 of the liner 1, and the second sidewall 112 and the first sidewall 111 are disposed opposite to each other along the width direction of the liner 1. The third sub-cover 26 is connected between the other end of the first sub-cover 24 and the other end of the second sub-cover 25. Here, the first sub-cover 24 is connected to the first sidewall 111, and the second sub-cover 25 is connected to the second sidewall 112, so that the first sub-cover 24 and the second sub-cover 25 can be relatively fixed. The third sub-cover 26 is connected between the first sub-cover 24 and the second sub-cover 25, thereby achieving the connection of the three-piece sub-cover.

Optionally, the first sidewall 111 is configured with a first groove, and one end of the first sub-cover plate 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 plate 24 and the first sidewall 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 and 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 airflow from the evaporator chamber 132 to the fan 8 does not leak. For example, a sealing strip is disposed between the first sub-cover plate 24 and the first side wall 111, and a sealing strip is also disposed between the second sub-cover plate 25 and the second side wall 112.

The inner container 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 inner container 1 jointly enclose to form an evaporator cavity 132; wherein the first subsheet 24 and/or the second subsheet 25 are detachably connected to the third sidewall 113.

In this embodiment, the first side wall 111 and the second side wall 112 connect and fix the first sub-cover plate 24 and the second sub-cover plate 25 from the width direction of the liner 1. The third sidewall 113 is located at a side of the compartment of the evaporator 3 away from the storage cavity 131, and therefore, the first sub-cover plate 24 and the second sub-cover plate 25 are fixedly connected from one side of the length direction of the inner container 1 by the third sidewall 113. Make return air apron 2 whole at least from trilateral fixing like this to guarantee return air apron 2's connection stability, avoid return air apron 2 to shift or drop.

Optionally, the first sub-cover plate 24 and the third side wall 113 are connected by a snap or a screw. The second sub-cover plate 25 is connected with the third side wall 113 by a snap connection or a screw connection. One of the first sub-cover plate 24 and the third side wall 113 is provided with a first buckle, the other one of the first sub-cover plate 24 and the third side wall 113 is provided with a first clamping groove, and when the first buckle is positioned in the first clamping groove, the first sub-cover plate 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 one 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 movement of the return air cover 2 in the up-down and front-rear directions is restricted by the connection of the first sub-cover 24 and the second cover 223 with the third side wall 113.

Alternatively, the other end portion of the first sub-cover plate 24 is recessed downward to form a first connection stage 241, the other end portion of the second sub-cover plate 25 is recessed downward to form a second connection stage 251, and the third sub-cover plate 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 overlapped above the first connecting table 241 and the second connecting table 251, and the third sub-cover plate 26 can press the first sub-cover plate 24 and the second sub-cover plate 25, so that the connection area and the connection stability between the three sub-cover plates are further increased.

Optionally, 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 stability of the attachment of the return air cover 2.

Optionally, the storage chamber 131 and the evaporator chamber 132 are disposed along the length direction of the liner 1. Each sub-cover plate comprises a top plate 271 and a side plate 27, and the top plate 271 is positioned above the step 115. The side plate 27 is connected to one end of the top plate 271 and extends downwards, and the side plate 27 is positioned on the outer side of the step 115 facing the side wall 11 of the storage cavity 131; wherein the top plate 271 is connected to the third side wall 113 and the side plate 27 is connected to the side wall 11 of the step 115 facing the storage cavity 131. Optionally, the return air cover plate 2 is an L-shaped cover plate, so that the space occupied by the return air cover plate 2 in the horizontal direction of the inner space 13 can be reduced,

in this embodiment, the top plate 271 is used 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, which increases the stability of the connection of the return air cover 2.

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

In practical use, the first sub-cover plate 24 and the second sub-cover plate 25 are installed, the positions of the buckles and the falling positions are aligned, 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 quantity of the screw holes and the buckles or the clamping grooves of each sub-cover plate can be one or multiple, the number and the positions of the screw holes and the buckles or the clamping grooves can be set according to requirements without specific limitation.

Optionally, the third sub-cover 26 is provided with an air return opening, and since the third sub-cover 26 is connected between the first sub-cover 24 and the second sub-cover 25, the air return opening is provided in the third sub-cover 26, which facilitates the return of air from the middle of the return cover 2.

Optionally, a third sub-cover plate 26 corresponds to the return air chamber. 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 26 of the present application is overlapped above the first sub-cover 24 and the second sub-cover 25, the detachment of the first sub-cover 24 does not affect the first sub-cover 24 and the second sub-cover 25.

Optionally, as shown in fig. 5, the refrigerator further includes a foam board 60, the foam board 60 is located in the evaporator cavity 132 and above the evaporator 3, and the foam board 60 is detachably connected to the return air cover plate 2. Here, the foam is used for carrying out thermal-insulated processing to the top of evaporimeter 3, avoids the cold volume of evaporimeter 3 to run off to guarantee the heat transfer effect of air current and evaporimeter 3.

Optionally, one of the return air cover plate 2 and the foam plate 60 is provided with a third fastener, the other of the return air cover plate 2 and the foam plate 60 is provided with a third clamping groove, and when the third fastener is located in the third clamping groove, the return air cover plate 2 is connected with the foam plate 60. Foam board 60 inwards caves in and forms the third draw-in groove, and return air apron 2 is equipped with the third buckle, and the third buckle is located the third draw-in groove, and the third buckle forms the butt joint board towards the protruding of third draw-in groove, and the up end of butt joint board can be with the lower terminal surface looks butt of foam board 60, and foam board 60 can be connected as an organic wholely with return air apron 2 like this. So that the return air cover plate 2 and the foam plate 60 are connected and then installed on the evaporator 3 and the inner container 1 as a whole. Alternatively, the number of the third fasteners is multiple, and part of the third fasteners is arranged at an end of the return air cover plate 2 facing the third side wall 113, and part of the third fasteners is arranged at intervals along an end of the return air cover plate 2 facing the first side wall 111. The third clamping grooves are the same in number as the third clamping buckles and correspond to the third clamping buckles one by one. This can increase the stability of the connection of the return air cover 2 to the foam sheet 60 without interfering with other connecting parts. Optionally, cystosepiment 60 and return air apron 2 phase-match, the terminal surface of curb plate 27 towards cystosepiment 60 can also be located to the third buckle for return air apron 2 can both be connected with the relative both ends homoenergetic of cystosepiment 60 like this, and then improves the stability of connecting. It should be noted that: the return air cover plate 2 can also be connected with the foam plate 60 in other manners, such as screws, magnetic attraction, adhesion, etc., which are not described in detail herein.

Optionally, the first sub-cover 24 is removably attached to the foam deck 60 and/or the second sub-cover 25 is removably attached to the foam deck 60.

Optionally, the foam sheet 60 abuts at least one side of the evaporator 3, where abutting means that the foam sheet 60 abuts or is close to the evaporator 3. Wherein, the foam board 60 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 is communicated with the air return opening and the evaporator 3, so that the air flow flowing in from the air return opening 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 volume flowing into the evaporator 3 becomes small, the wind resistance becomes large, and the refrigerating effect of the refrigerator is further influenced. The foam board 60 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, the 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 further ensured. In addition, the arrangement of the groove air duct 61 can also increase the return air volume of the middle evaporator 3, and the refrigeration effect of the refrigerator is improved.

It should be noted that: the foam plate 60 may not be provided above the evaporator 3, and the position of the foam plate 60 may be selected according to the installation direction or position of the evaporator 3.

Optionally, as shown in fig. 3, 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 on one side of the side wall body 114 facing the internal space 13, the air duct cover plate 5 and the side wall body 114 together enclose an air supply duct 116, the air duct cover plate 5 is configured with a plurality of air supply outlets 117, and the plurality of air supply outlets 117 are sequentially arranged at intervals along an extending direction of the air supply duct 116; the fan 8 is communicated with the air supply duct 116, and is used for driving the air flow to flow in the air supply duct 116.

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

Alternatively, the flow area of the supply air duct 116 gradually decreases in the flow direction of the air flow in the supply air duct 116. In this embodiment, since the air supply power is gradually reduced along with the flow direction of the air flow, the flow area of the air supply duct 116 is gradually reduced along with the flow direction of the air flow, so that the downstream air output can be increased. In addition, the air outlet pressure at the downstream of the air supply duct 116 is reduced, the air outlet area of the air supply opening 117 can be reduced, the local heat exchange is prevented from being too fast, and the refrigeration uniformity of the refrigerator is ensured.

Alternatively, the width of the cross-sectional area of the end of the air duct 116 is constant to ensure the air blowing area of the end air blowing port 117.

Optionally, the multiple air supply outlets 117 further include a third air supply outlet, the third air supply outlet is located at the end of the air supply duct 116, and the opening area of the third air supply outlet is larger than the opening area of the air supply outlet 117 at the upstream of the third air supply outlet, so that the air output at the end of the air supply duct 116 is increased, the refrigerating airflow can cover the inner space 13 in a larger area, and the refrigerating effect is improved. And the wind path in the air supply duct 116 is more smooth, and the air outlet uniformity of the refrigerator is improved.

Alternatively, as shown in fig. 3 and 4, arrows in fig. 4 indicate the flowing direction of the air flow in the air supply duct, and the embodiment of the present disclosure provides a duct cover plate, where the duct cover plate 5 includes a cover plate body 51 and an air guide structure 52, and the cover plate body 51 is configured with an air supply opening 117. The air guide structure 52 is located in the air blowing port 117, and the air guide structure 52 has a plurality of air blowing holes 521, and the plurality of air blowing holes 521 are arranged in a honeycomb shape. The height of the air guide structure 52 facing the air duct 116 gradually increases along the flow direction of the air flow in the air duct 116.

In this embodiment, an air guide structure 52 is provided in the air outlet 117, and the air guide structure 52 can guide the air flow flowing out of the air outlet 117 so that the air flow flowing out of the air outlet 117 can be controlled. Wind-guiding structure 52 increases gradually along with the direction of flow of air current towards one side of air supply duct 116, makes the terminal resistance of a supply-air outlet 117 increase like this, has reduced the velocity of flow of air current, makes the terminal resistance of supply-air outlet 117 increase like this, has reduced the velocity of flow of air current, avoids partial supply-air outlet 521 air-out wind speed too fast, causes the phenomenon of partial supply-air outlet 521 return air to make the air-out of supply-air outlet 117 more even. In addition, the plurality of honeycomb-shaped air supply holes 521 can uniformly divide the cold air into a plurality of small cold air flows when the cold air passes through the air supply opening 117, so that the flow rate of each cold air flow is smaller, the air output is more uniform, and the temperature of each part of the refrigerator is ensured to be more uniform. The honeycomb-shaped blowing holes 521 have a strong directional blowing capability, so that the wind is blown to a long distance along the direction of the blowing port 117.

Alternatively, the plurality of blow holes 521 are uniformly arranged. In this way, when the plurality of air holes 521 are formed in a uniformly arranged honeycomb shape, the area of each air hole 521 is relatively small, the difference in the air speed blown out from each edge of each air hole 521 is small, the influence of one-side air outlet is small, the air outlet amount can be made more uniform, and the temperature of each part of the refrigerator can be ensured to be more uniform.

Optionally, the air blowing opening 117 comprises a plurality of sub air blowing openings 525, and the plurality of sub air blowing openings 525 are sequentially arranged at intervals along the length direction or the width direction of the air blowing opening 117; the number of the air guide structures 52 is the same as the number of the sub air supply ports 525, and the air guide structures correspond to the sub air supply ports one by one.

In this embodiment, one air supply opening 117 is divided into a plurality of sub air supply openings 525, and each sub air supply opening 525 is provided with one air guide structure 52, so that the width direction of the cover plate body 51 of the air supply opening 117 is further adjustable, and the uniformity and the flexibility of air outlet are improved.

Optionally, the air blowing holes 521 extend along the air outlet direction, and the extending direction of the air blowing holes 521 forms an included angle with the extending direction of the corresponding sub air blowing openings 525. In this embodiment, there is the contained angle in the extending direction of the air supply hole 521 and the extending direction of the sub-air supply opening 525 that corresponds to it, that is to say, the water conservancy diversion structure makes the air current that the air supply opening 117 flows can incline, and the user can adjust the air-out direction of air supply hole 521 as required like this, improves the flexibility and the homogeneity of freezer air-out.

Alternatively, the air blowing holes 521 are inclined downward in the direction from the air blowing duct 116 to the internal space 13. The air-out of blast hole 521 can not upwards blow like this, is equipped with the condition of glass door on the upper portion of freezer under, can avoid the air-out of freezer to blow to glass door, and then reduces inner space 13 and external heat transfer, avoids glass door frosting.

Specifically, the included angle between the air blowing hole 521 and the cover plate body 51 is in the range of 0 to 30 °, and here, when the included angle between the air blowing hole 521 and the cover plate body 51 is greater than 30 °, part of the air flow flowing out of the air blowing hole 521 still has a tendency of flowing upwards, and the air flow can better flow downwards because the included angle is less than 30 °. Specifically, the included angle between the blowing hole 521 and the cover plate body 51 may be 10 °, 15 °, 20 °, 25 °, or the like.

Optionally, the air guiding structure 52 includes a frame 523 and a partition 524, where the frame 523 defines an air outlet channel; the partition 524 is located in the air outlet channel, and divides the air outlet channel into a plurality of air supply holes 521. The frame 523 and the partition 524 are parallel to the center line of the blowing hole 521, and the height of the partition 524 increases toward one side of the blowing duct 116. In this embodiment, the frame 523 and the partition 524 form a plurality of blow holes 521, and the structural strength of the plurality of blow holes 521 can be increased.

Alternatively, the plurality of rows of the blowing holes 521 can increase the air outlet area of each sub-blowing opening 525.

Optionally, at least one frame of the frame 523 extends toward a side away from the air supply duct 116 and protrudes from the cover plate body 51 to prevent foreign matters from falling into the air supply hole 521. In this embodiment, the frame 523 protrudes from the cover plate body 51, so as to cover the air blowing hole 521, and prevent foreign matters from falling into the air blowing hole 521 and blocking the air blowing hole 521.

Alternatively, as shown in fig. 4, the air guiding structure 52 is obliquely disposed in the sub air blowing opening 525, wherein the air guiding structure 52 is obliquely upward along a direction from the air blowing duct 116 to the internal space 13, the upper frame 523 of the air guiding structure 52 protrudes from the side of the cover plate body 51 facing the internal space 13, and the lower frame 523 of the air guiding structure 52 protrudes from the side of the cover plate body 51 facing the air blowing duct 116. Therefore, downward inclined air outlet of the air supply hole 521 can be realized, the air supply hole 521 can be shielded, and the air supply hole 521 is prevented from being blocked. The frame 523 includes an upper frame 523 and a lower frame 523.

The refrigerator further comprises a door 95, the upper portion of the inner space 13 is opened, and the door 95 is movably covered at the opening. Alternatively, the upper wall surface of the bottom wall 12 and/or the lower wall surface of the door 95 are configured with air guiding grooves 122, the air guiding grooves 122 extend along the width direction of the inner container 1 (i.e. extend along the front-back direction), and the air guiding grooves 122 can match with the air blowing openings 117 to enable the air flow of the air blowing openings 117 to flow from back to front or from front to back. The flow area of the airflow is increased, the uniformity of the air supply is improved, the temperature of the inner space 13 is more uniform, and the refrigerating effect of the refrigerator is improved.

Optionally, as shown in fig. 2 and 10, a portion of the bottom wall 12 of the inner container 1 protrudes upward to form air duct ribs 121, and an air guiding groove 122 is formed between adjacent air duct ribs 121. The refrigerator further comprises an air outlet cover plate 123, and the air outlet cover plate 123 is arranged above the air guide groove 122 in a covering mode. The air duct rib 121 is provided with a first gap 124, so that the air flow in the air guiding groove 122 flows out from the first gap 124.

In this embodiment, the upper portion of air guide groove 122 of bottom wall 12 is open, and since articles need to be placed in internal space 13, articles easily block air guide groove 122. An air outlet cover plate 123 is arranged above the air guide groove 122, and the air outlet cover plate 123 can prevent articles of the refrigerator from extending into the air guide groove 122 to cause blockage of the air guide groove 122. The air duct rib 121 is provided with the first notch 124, so that the air flow in the air guide groove 122 can flow into the inner space 13 through the first notch 124, thereby not only realizing the refrigeration effect of the bottom air flow, but also avoiding the air guide groove 122 from being blocked, and ensuring that the air flow can smoothly flow to the opposite side wall 11.

Optionally, the first notch 124 extends along the horizontal direction, so that the refrigerant air flow in the air guiding groove 122 can flow into the internal space 13 from the side surface of the air guiding groove 122.

Alternatively, the plurality of air guide grooves 122 are sequentially arranged along the width direction or the length direction of the liner 1. The number of the air duct cover plates 5 is smaller than that of the air guide grooves 122, the air duct cover plates 5 are arranged above the air guide grooves 122 at intervals along the arrangement direction of the air guide grooves 122, and thus the air guide grooves 122 adjacent to the air guide grooves 122 covered by the air duct cover plates 5 are not provided with the air duct cover plates 5, so that the airflow at the first gap 124 can flow out conveniently.

Optionally, one air duct rib 121 includes a plurality of sub-air duct ribs, the sub-air duct ribs are sequentially arranged at intervals along the extending direction of the air guide groove 122, and a first gap 124 is formed between adjacent sub-air duct ribs. In this embodiment, the adjacent sub-air duct ribs form the first notch 124, so that the flow guiding function can be realized, and the air outlet function can also be realized.

Optionally, the lengths of the plurality of sub-air duct ribs gradually decrease along the flow direction of the air flow in the air guide groove 122. In this embodiment, the length of a plurality of sub-wind channels muscle reduces gradually, that is to say, first breach 124 becomes dense gradually, and along with the flow of air current, the amount of wind reduces gradually like this, and the power of air current reduces gradually, and first breach 124 density grow gradually can increase the air output of low reaches in the wind guide groove 122 to the air-out that makes the freezer is more even.

Optionally, the number of the first gaps 124 is multiple, and the opening area of the first gaps 124 gradually increases along the flow direction of the air flow in the air guide slot 122. In this embodiment, along with the flow of air current, the amount of wind reduces gradually, and the power of air current reduces gradually, and the open area of first breach 124 crescent can improve the air output of low reaches in the wind guide groove 122 to the air-out that makes the freezer is more even.

Optionally, the side wall body 114 defines the air supply duct 55, a second gap is formed in the lower side wall 11 of the air supply duct 55, and the air supply duct 116 is communicated with the air guide duct 122 through the second gap. The duct cover 5 covers the air supply duct 55 and one side of the second notch facing the inner space 13, so that the air in the air supply duct 116 flows into the air guiding groove 122 through the second notch.

In this embodiment, the second gap penetrates through the lower sidewall 11 of the air supply duct 55, so that the air supply duct 116 is communicated with the air guiding groove 122 through the second gap. Thus, the air flow in the air supply duct 55 can efficiently flow into the air guide duct 122, and the loss of the air flow can be reduced.

Optionally, the duct cover 5 is further provided with a blowing port 117, and the blowing port 117 corresponds to the second notch. Thus, the blower port 117 can share the pressure at the second notch, and the cooling air flow in the blower duct 55 can directly flow to the internal space 13 through the blower port 117.

Alternatively, when the number of the blowing openings 117 is plural, at least a part of the blowing openings 117 among the plural blowing openings 117 corresponds to the second notch.

Alternatively, the air blowing opening 117 may not correspond to the second notch, and the air blowing opening 117 and the second notch are sequentially staggered along the extending direction of the air blowing groove 55, so that air can be directly blown into the internal space 13 through the air blowing opening 117, or air can be blown out from the bottom through the second notch and the air guiding groove 122 and flow to the opposite side, thereby improving the range and uniformity of air blowing.

Optionally, the air guide groove 122 extends along the width direction or the length direction of the liner 1. Here, the extending direction of the air guide groove 122 is related to the installation position of the air supply groove 55, and when the air supply groove 55 is installed on the front side wall and/or the rear side wall of the inner container 1, the air guide groove 122 extends in the width direction of the inner container 1. When the air supply groove 55 is formed on the left side wall and/or the right side wall of the inner container 1, the air guide groove 122 extends along the length direction of the inner container 1.

Optionally, the air outlet cover plate 123 is detachably connected to the inner container 1. This facilitates the disassembly of the air outlet cover plate 123 to clean the air guiding slot 122. The air outlet cover plate 123 and the bottom wall 12 of the inner container 1 can be detachably connected in a buckling mode, a magnetic attraction mode or a screw mode.

In practical applications, the fan 8 can drive the airflow to flow out from the air supply duct 116 to the air guide slot 122 through the air supply opening 117 and the second notch, and drive the airflow to flow in the air guide slot 122.

Optionally, as shown in fig. 3, the side wall body 114 is recessed towards a direction away from the internal space 13 to form an air supply duct 55, the air duct cover plate 5 is covered on one side of the air supply duct 55 facing the internal space 13, the air duct cover plate 5 includes a plurality of sub air duct cover plates, and the plurality of sub air duct cover plates 5 are detachably connected or spliced with each other.

In this embodiment, duct cover 5 is covered with air duct 55 facing internal space 13 so that air can flow into internal space 13 through air outlet 117 of 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 mount, 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 optional embodiments, the air duct cover plate 5 may also be provided with a return air inlet, through which the air flow of the storage cavity 131 can flow into the air supply groove 55, such air duct cover plate 5 may also include a plurality of sub-air duct cover plates 5, and the plurality of sub-air duct cover plates 5 may be detachably connected or spliced together. In addition, in the embodiment of the disclosure, even if a 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.

Optionally, the duct cover 5 is removably connected to the sidewall body 114.

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

Optionally, as shown in fig. 3, one of the duct cover 5 and the side wall body 114 is provided with a buckle (hereinafter, referred to as a fifth buckle 535 for convenience of distinction), the other of the duct cover 5 and the side wall body 114 is provided with a slot adapted to the buckle (hereinafter, referred to as a fifth slot for convenience of distinction), and when the fifth buckle 535 is located in the fifth slot, the duct cover 5 is connected to the side wall body 114. In this embodiment, the air duct cover plate 5 is connected to the sidewall body 114 through the fifth buckle 535 and the fifth slot, so that the structure is simple, the operation and the processing are easy, and the cost is low.

Optionally, the number of the fifth buckles 535 is multiple, and the multiple fifth buckles 535 are sequentially arranged at intervals along the extending direction of the air supply duct 116. The number of the fifth clamping grooves is the same as that of the fifth clamping grooves and corresponds to that of the fifth clamping grooves one to one. This can increase the stability of the connection of the duct cover 5 to the side wall body 114.

Optionally, both sides of the air blowing opening 117 are provided with a fifth buckle 535 or a fifth clamping groove to further increase the connection stability of the duct cover 5 and the side wall body 114.

Optionally, the duct cover 5 and the sidewall body 114 are also connected by fasteners. In order to ensure the connection stability of the duct cover 5, it may be fastened by fasteners, such as screws.

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

Alternatively, the air supply groove 55 extends along the longitudinal direction of the side wall 11, and the first sub air duct cover 53 and the second sub air duct cover 532 are sequentially disposed along the longitudinal direction of the side wall body 114. This facilitates the removal and installation of the adjacent duct cover plates 5, and does not affect the arrangement of the air supply port 117.

Optionally, the air supply groove 55 includes a plurality of fan grooves 552 and a plurality of air outlet grooves 551, the fan groove 552 is used for accommodating the fan 8, the plurality of air outlet grooves 551 are all communicated with one fan groove 552, and the plurality of 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 groove 552 facing the inner space 13, the number of the second sub-air duct cover plates 532 is the same as that of the air outlet grooves 551, 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 8 is disposed in the fan groove 552, and one fan groove 552 is communicated with the plurality of air outlet grooves 551, so that the air outlet of the fan 8 can flow to the plurality of air outlet grooves 551 at the same time, and the air supply of the plurality of air supply ducts 116 is realized. The first sub-duct cover plate 53 at least partially covers the fan groove 552 to cover the fan 8, that is, the first sub-duct cover plate 53 and the sidewall body 114 form an air supply cavity, and the fan 8 is located in the air supply cavity. The second sub-duct cover 532 covers one side of each air outlet 551 facing the inner space 13, so as to facilitate air outlet of each side air duct 116.

Optionally, the first sub-duct cover plate 53 includes a fan cover plate and a shunt cover plate connected to each other, the fan cover plate is covered on one side of the fan 8 facing the inner space 13, one end of the shunt cover plate is connected to the fan cover plate, and the other end of the shunt cover plate is located on one side of the air outlet slots 551 facing the inner space 13. That is, the first sub-duct cover 53 also covers a part of the air outlet groove 551. Therefore, the air flow flowing out of the air supply cavity can smoothly flow into the air outlet groove 551, and leakage is avoided.

Optionally, the number of the shunting cover plates is the same as that of the air outlet grooves 551, and the shunting cover plates are in one-to-one correspondence, and are provided with air supply outlets 117, so that air outlet of the side walls 11 can be realized in the length direction.

Optionally, the fan cover plate protrudes towards the inner space 13, which can avoid the fan 8, to facilitate placement of the fan 8. The fan cover plate is provided with an air inlet 58, the air inlet 58 is communicated with the evaporator cavity 132, and the fan 8 is located at the air inlet 58, so that the fan 8 can drive the airflow in the evaporator cavity 132 to flow into the air supply duct 116 from the air inlet 58 and then flow out through the air supply outlet 117 of the air supply duct 116.

Optionally, the return air cover 2 is connected to the side of the fan cover facing the interior 13, and the upper end of the return air cover 2 is located at the upper end of the air inlet 58, so as to ensure that the air flow in the evaporator cavity 132 can completely flow into the air supply duct 116.

Optionally, when the return air cover plate 2 is connected to the first side wall 111, the fan cover plate corresponding to the first side wall 111 is configured with a first groove. When the return air cover plate 2 is connected with the second side wall 112, a second groove is formed on the fan cover plate corresponding to the second side wall 112.

The air duct cover 5 covers the side of the air supply duct 55 facing the inner space 13, so that the air duct cover 5 and the sidewall body 114 together enclose the air supply duct 116. Air supply groove 55 includes fan groove 552 and air-out groove 551, first sub-wind channel apron 53 at least partly covers and establishes in fan groove 552 towards inner space 13 one side, so that first sub-wind channel apron 53 encloses with lateral wall body 114 and closes out the air supply chamber, second sub-wind channel apron 532 covers and establishes in one side of air-out groove 551 towards inner space 13, second sub-wind channel apron 532 and lateral wall body 114 enclose out the air-out wind channel, the part that air-out groove 551 was located in first sub-air-out apron 123 lid also encloses with lateral wall body 114 and closes out the air-out wind channel, consequently, air supply wind channel 116 includes air supply chamber and air-out wind channel.

Optionally, as shown in fig. 12, the freezer further includes a wind blocking rib 56, the wind blocking rib 56 is located in the air supply duct 116, the wind blocking rib 56 is disposed on one side of at least one air supply opening 117, and the air supply opening 117 and the wind blocking rib 56 are sequentially disposed along the flowing direction of the airflow.

In this embodiment, the air blowing opening 117 and the wind blocking rib 56 are sequentially arranged along the flowing direction of the air flow, and can be understood as follows: the wind blocking rib 56 is located one side of the air supply opening 117 deviating from the fan 8, so that the wind blocking rib 56 can block part of air flow, the air flow rebounds to form a vortex after impacting the wind blocking rib 56, the air flow in the vortex flows into the air supply opening 117 again, and the air volume of the weak air area of one end, far away from the fan 8, of the air supply opening 117 can be increased. Through the setting of the wind blocking rib 56, the wind outlet uniformity of the air supply opening 117 is improved, and further the wind outlet uniformity of the refrigerator is improved.

Optionally, the wind blocking rib 56 is disposed on one side of the air duct cover plate 5 facing the air supply duct 116, the wind blocking rib 56 protrudes from the air duct cover plate 5, when the wind blocking rib 56 is plural, each wind blocking rib 56 corresponds to one air supply opening 117, and the height of the plurality of wind blocking ribs 56 protruding from the air duct cover plate 5 is gradually increased along the flowing direction of the air flow in the air supply duct 116.

The embodiment of the disclosure provides a refrigeration device, and the refrigeration device comprises the air duct cover plate in any one of the embodiments. The refrigeration equipment provided by the embodiment of the disclosure comprises the air duct cover plate in any one of the above embodiments, so that the refrigeration equipment has the beneficial effects of the air duct cover plate in any one of the above embodiments.

Refrigeration equipment includes, but is not limited to, freezers, refrigerators, air conditioners, and the like.

Optionally, when the refrigeration equipment is a refrigerator, the refrigerator includes a fan 8 as shown in fig. 3, 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 a plurality of air outlets, and the number of the air outlets is the same as that of the air supply ducts 116 and corresponds to that of the air supply ducts 116.

In this embodiment, the air supply ducts 116 share one fan 8, the fan 8 is located on the same side of the air supply ducts 116, and the volute 7 of the fan 8 is provided with an air outlet corresponding to the air supply ducts 116, so that the air outlet of one fan 8 can flow to the air ducts on the same side at the same time, thereby ensuring the air flow of each air supply duct 116.

Optionally, when a plurality of air supply ducts 116 are disposed on the same side wall 11, the plurality of air supply ducts 116 include a third air supply duct 1163 and a fourth air supply duct 1164, the blower 8 includes a bottom plate 71, a first casing wall 73 and a second casing wall 74, and the first casing wall 73 is connected to one end of the bottom plate 71; the second housing wall 74 is connected to the other end of the base plate 71 and is disposed opposite to the first housing wall 73, and the base plate 71, the second housing wall 74 and the first housing wall 73 enclose a receiving chamber having one end opened. The volute cover plate 72 covers the opening of the accommodating cavity, the volute cover plate 72 and the accommodating cavity enclose to form a fan cavity, and the volute cover plate 72 is provided with an air inlet 58. The blower chamber is used to house the impeller 77. The first and second walls 73 and 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 adapted to be 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 communicated with 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 by one fan 8.

Optionally, the air outlet direction of the first air outlet 78 and the air outlet direction of the second air outlet 79 are located on the same side of the fan 8, and an included angle exists between the air outlet direction of the first air outlet 78 and the air outlet direction of the second air outlet 79. So as to realize that the fan 8 simultaneously supplies air to the air supply duct 116 on the same side.

Optionally, when the freezer includes the first fan 84 and the second fan 85, for example, when the first fan 84 is located on the front side wall and the second fan 85 is located on the rear side wall, the first fan 84 and the second fan 85 are opposite and correspondingly disposed, and the first fan 84 and the second fan 85 are both disposed on the right side of the inner container 1. Alternatively, the first fan 84 and the second fan 85 may both rotate clockwise, wherein the second fan 85 rotates clockwise, and the air outlet of the scroll 7 of the second fan 85 is on the left side. The first fan 84 rotates clockwise with the volute 7 of the first fan 84 on the right. That is, the volutes 7 of the first fan 84 and the second fan 85 are different. Optionally, the rotation directions of the first fan 84 and the second fan 85 are different, for example, the first fan 84 rotates clockwise, and the second fan 85 rotates counterclockwise, that is, the air outlet of the volute 7 of the first fan 84 is located on the right side, and the outlet of the volute 7 of the second fan 85 is on the left side, that is, the first fan 84 and the second fan 85 are arranged in a mirror image. Like this two fans 8's air current flow resistance all is less, has guaranteed the air current smooth and easy nature that flows of two fans 8, improves the air-out homogeneity of freezer.

Optionally, the volute cover plate 72 of the present application may be provided independently, or may be integrated with the fan cover plate. That is to say, the volute cover plate 72 and the fan cover plate are integrated, the volute cover plate 72 can cover both the opening of the accommodating cavity and the side of the fan groove 552 facing the inner space 13, and the volute cover plate 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 does not need to be arranged independently, installation is convenient, cost is saved, production efficiency is improved, sealing foam is not needed to seal the interface between the volute 7 and the air supply duct 116, and sealing performance is good. When the volute cover plate 72 is integral with the fan cover plate, the features of the fan cover plate are also applicable to the volute cover plate 72, and the features of the volute cover plate 72 are also applicable to the fan cover plate.

Optionally, when the volute cover plate 72 and the fan cover plate are combined into one, the first sub-air duct cover plate 53 is located on one side of the volute 7 facing the internal space 13, and the volute 7 and the first sub-air duct cover plate 53 together enclose the air outlet chamber; the fan 8 is located in the fan cavity. Specifically, the volute 7 is detachably or fixedly connected with the first sub-duct cover plate 53. The side of the first sub-duct cover plate 53 facing the fan groove 552 is configured with a wall section matching with the volute 7, so that the connection between the first sub-duct cover plate 53 and the volute 7 can be realized, and the sealing performance is ensured.

Optionally, as shown in fig. 13, the refrigerator further comprises a fourth evaporator 9, the fourth evaporator 9 is positioned on the bottom wall 12, and the fourth evaporator 9 can exchange heat with the articles in the inner space 13 for refrigeration.

The bottom wall 12 of the refrigerator is provided with the fourth evaporator 9, the fourth evaporator 9 can directly exchange heat with the articles in the storage cavity 131, that is, the fourth evaporator 9 adopts a direct cooling mode to perform direct cooling. Like this the freezer has wind cold and directly cold function simultaneously, and dual refrigeration can improve cooling speed by a wide margin, can enough reduce the frosting of freezer, can also guarantee the refrigeration efficiency and the refrigeration effect of freezer, reduces the energy consumption.

Alternatively, the fourth evaporator 9 is curved to be laid on the bottom wall 12, and the density of the fourth evaporator 9 is gradually decreased in a direction from the side wall 11 to the center of the internal space 13.

In this embodiment, the density of the fourth evaporator 9 gradually increases from the side wall 11 to the center of the inner space 13, that is, the fourth evaporator 9 has two dense sides and a sparse middle, so that the cost can be reduced, and on the other hand, the fourth evaporator 9 cooperates with the air blowing opening 117 of the side wall 11 to form a quick freezing area, thereby improving the flexibility of the refrigerator.

Optionally, the fourth evaporator 9 is arranged at a side of the bottom wall 12 facing away from the inner space 13. This protects the fourth evaporator 9 and prevents the fourth evaporator 9 from coming into direct contact with the user and frostbite the user.

Optionally, when the bottom wall 12 of the refrigerator is provided with the fourth evaporator 9, the air supply duct 116 is provided in the middle and/or upper portion of the side wall 11. Thus, the bottom of the inner space 13 is directly cooled and the middle upper part is air-cooled. Triple refrigeration can greatly improve the cooling speed. Meanwhile, the middle-upper layer continuous air circulation can avoid frosting of the cabinet opening of the inner container 1 and the inner container 1.

It should be noted that: when the freezer is provided with the fourth evaporator 9, the technical features described above with respect to the freezer are also applicable to freezers with direct cooling and air cooling structures, which have the same technical effects and are not described herein again.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify 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. An air duct cover plate adapted to enclose with an external component to form an air supply duct, the air duct cover plate comprising:

a cover plate body which is provided with an air supply outlet;

the air guide structure is positioned in the air supply port, the air guide structure is provided with a plurality of air supply holes, and the air supply holes are arranged in a honeycomb shape;

the air guide structure is arranged on the air supply duct, and the height of the air guide structure towards one side of the air supply duct is gradually increased along the flowing direction of air flow in the air supply duct.

2. The duct cover according to claim 1,

the air supply outlet comprises a plurality of sub air supply outlets which are sequentially arranged at intervals along the length or width direction of the air supply outlet; the number of the air guide structures is the same as that of the sub air supply outlets and corresponds to that of the sub air supply outlets one to one.

3. The duct cover according to claim 1,

the air supply hole extends along the air outlet direction, and an included angle is formed between the extending direction of the air supply hole and the extending direction of the air supply opening.

4. The duct cover according to claim 3, wherein the air guiding structure comprises:

a frame defining an air outlet channel;

the clapboard is positioned in the air outlet channel and divides the air outlet channel into a plurality of air supply holes;

the frame and the partition plate are parallel to the central line of the air supply hole, wherein the height of the partition plate towards one side of the air supply air channel is gradually increased along the flowing direction of air flow in the air supply air channel.

5. The duct deck according to claim 4,

at least one frame of the frame extends towards one side deviating from the air supply duct and protrudes out of the cover plate body so as to prevent foreign matters from falling into the air supply hole.

6. The duct cover according to claim 1,

the air supply ports are arranged in the air supply duct at intervals along the flowing direction of air flow in the air supply duct.

7. The duct cover according to any one of claims 1 to 6, further comprising:

the wind blocking rib is arranged on one side, facing the air supply duct, of the cover plate body, is positioned on one side of the air supply opening and is arranged along the flowing direction of air flow in the air supply duct, and the air supply opening and the wind blocking rib are sequentially arranged.

8. Refrigeration appliance, characterized in that it comprises a duct cover according to any one of claims 1 to 7.

9. The refrigeration appliance according to claim 8, further comprising:

the inner bag encloses and closes out the inner space that has the open-ended, the opening is located inner space's top, the inner bag includes the lateral wall, the lateral wall includes:

a sidewall body, an outer member comprising the sidewall body;

and the air duct cover plate and the side wall body enclose an air supply duct, the air duct cover plate is arranged on one side, facing the inner space, of the air supply duct, and the air supply hole is communicated with the air supply duct and the inner space and inclines downwards.

10. The refrigeration appliance according to claim 9,

along following the wind channel that supplies air to the direction of inner space, wind-guiding structure tilt up, just wind-guiding structure's last frame protrusion in apron body orientation one side of inner space, the frame includes last frame.

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