CN220338779U - Refrigerating apparatus - Google Patents

Abstract

The application relates to the technical field of refrigeration and discloses refrigeration equipment. The refrigeration equipment comprises: the inner container encloses an inner space, the inner space comprises a storage cavity and an evaporator cavity, the inner container comprises a plurality of side walls, at least one side wall is provided with an air duct with an air outlet, and the storage cavity, the evaporator cavity and the air duct form an air path; the evaporator is positioned in the evaporator cavity; the fan is positioned in the air path and used for driving the airflow to flow in the air path; the first direct cooling evaporation tube is spirally arranged on the bottom wall of the inner container; wherein the density of the first direct cooling evaporation tube is unchanged; alternatively, the density of the first direct cooling evaporation tube gradually increases along the direction away from the air outlet. The first direct cooling evaporating pipe gradually increases along the direction density of keeping away from the air outlet, can reduce the temperature of the position of keeping away from the air outlet like this, solves the great problem of refrigeration plant bottom difference in temperature, improves refrigeration plant's temperature homogeneity and refrigeration effect.

Description

Refrigerating apparatus

Technical Field

The present application relates to the field of refrigeration technology, for example, to a refrigeration device.

Background

At present, a horizontal refrigerator on the market generally adopts a direct-cooling refrigeration mode, and in the use process, as the number of times of opening and closing a door is increased, frost and even ice can be formed on the refrigerator liner, so that the problem of defrosting is brought to a user, and meanwhile, the problems of reduction of storage space and rising of energy consumption can be caused.

In the related art, an air-cooled refrigerator is provided with an air-cooled component, and the air-cooled component generally comprises an evaporator cavity, an evaporator, a fan, an air duct and the like. The evaporator exchanges heat with the air flow to form a refrigerating air flow, and the fan is used for driving the refrigerating air flow to flow. The frosting in the refrigerator can be reduced through air cooling refrigeration.

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 air-cooled refrigerator in the related art, more articles are contained in the inner container, and the articles easily block the flow of air flow in the inner container, so that the refrigerating effect of the refrigerator is affected.

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

Disclosure of Invention

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

The embodiment of the disclosure provides a refrigeration device to improve the refrigeration effect of the refrigeration device.

Embodiments of the present disclosure provide a refrigeration apparatus, including: the inner container encloses an inner space, the inner space comprises a storage cavity and an evaporator cavity, the inner container comprises a plurality of side walls, at least one side wall is provided with an air duct with an air outlet, and the storage cavity, the evaporator cavity and the air duct form an air path; the evaporator is positioned in the evaporator cavity; the fan is positioned in the air passage and used for driving air flow to flow in the air passage; the first direct cooling evaporation tube is spirally arranged on the bottom wall of the inner container; wherein the density of the first direct cooling evaporation tube is unchanged; or, the density of the first direct cooling evaporation tube gradually increases along the direction away from the air outlet.

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

the refrigeration equipment realizes air cooling refrigeration through an air path, an evaporator and a fan. The bottom wall of the inner container is provided with the first direct cooling evaporation tube, so that the refrigerating equipment can refrigerate in a mode of combining air cooling and direct cooling, and the temperature in the refrigerating equipment can be further reduced. The density of the first straight cold evaporator tube may be constant, thus facilitating the placement of the first straight cold tube. Because the lateral wall is equipped with the air outlet, and the position temperature that is close to the air outlet is lower, and the temperature of keeping away from the air outlet is higher, and first direct cooling evaporating pipe increases gradually along the direction density of keeping away from the air outlet, can reduce the temperature of keeping away from the position of air outlet like this, solves the great problem of refrigeration plant bottom difference in temperature, improves refrigeration plant's temperature homogeneity and refrigeration effect.

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

Drawings

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

fig. 1 is a schematic view of a refrigerator according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of another refrigerator provided in an embodiment of the present disclosure;

fig. 3 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present disclosure;

fig. 4 is a schematic cross-sectional view of another refrigerator provided in an embodiment of the present disclosure;

FIG. 5 is a schematic view of the bottom wall of a liner provided in an embodiment of the present disclosure;

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

FIG. 7 is a schematic view of another sidewall configuration provided by an embodiment of the present disclosure;

fig. 8 is a schematic cross-sectional view of another refrigerator provided in an embodiment of the present disclosure.

Reference numerals:

10. an inner container; 11. an inner space; 12. a right side wall; 13. a left side wall; 14. a rear sidewall; 15. a front sidewall; 16. an air duct; 161. a first air duct; 162. a first air outlet; 163. a second air duct; 164. a second air outlet; 17. a bottom wall; 171. a step; 18. an air outlet; 19. a sidewall; 20. a return air cover plate; 21. a first cover plate portion; 22. a second cover plate portion; 23. a first return air inlet; 24. a second return air inlet; 25. a third return air inlet; 30. an evaporator; 301. a first evaporator; 302. a second evaporator; 50. a blower; 501. a first fan; 502. a second fan; 60. a first direct-cooling evaporator tube; 601. a first pipeline; 602. a second pipeline; 603. a third pipeline; 70. a second direct-cooling evaporation tube; 701. a first straight cold pipe; 702. and a second direct cooling pipe.

Detailed Description

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

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

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

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

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

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

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

As shown in fig. 1 to 8, the embodiment of the present disclosure provides a refrigeration apparatus, which may be a refrigerator, a freezer, or the like.

The embodiment of the disclosure provides a refrigerator, in particular to a horizontal air-cooled refrigerator, which comprises a refrigerator body and a door body, wherein the refrigerator body is limited to an inner space 11 with a refrigerator opening, and the door body is movably positioned above the refrigerator body so as to open or close the refrigerator opening. The box body comprises a box shell, an inner container 10 and a heat insulation material, wherein the inner container 10 is positioned in the box shell, and the heat insulation material is positioned between the box shell and the inner container 10.

The liner 10 includes a bottom wall and a plurality of side walls including a front side wall 15, a rear side wall 14, a left side wall 13, and a right side wall 12. The front side wall 15 and the rear side wall 14 are disposed opposite to each other and are located at the front and rear ends of the bottom wall, respectively, and the front side wall 15 and the rear side wall 14 each extend upward. The left side wall 13 and the right side wall 12 are disposed opposite to each other, and the left side wall 13 and the right side wall 12 are located at the left and right ends of the bottom wall, respectively, and extend upward. The bottom wall, front side wall 15, rear side wall 14, left side wall 13 and right side wall 12 together enclose an interior space 11. The inner space 11 is provided with a cabinet opening, the cabinet opening is upward, and the door body movable cover is arranged above the cabinet opening.

As shown in fig. 1 and 2, for convenience of description, the present application defines the front-rear direction as the depth direction and the left-right direction as the length direction. Arrows in fig. 1 and 2 indicate the direction of air flow in the refrigerator.

The disclosed embodiments provide a refrigerator, the liner 10 includes a plurality of side walls 19, at least one side wall 19 of the plurality of side walls 19 defining an air duct having an air outlet. The refrigerator further comprises a return air cover plate 20, the return air cover plate 20 is located in the inner space 11 and divides the inner space 11 into a storage cavity and an evaporator cavity, an outlet of the evaporator cavity is communicated with an inlet of the air duct, the return air cover plate 20 is provided with a return air inlet, and air flow in the storage cavity can flow into the evaporator cavity through the return air inlet. Here, the storage chamber is used for holding articles to be frozen, such as meat, seafood, tea leaves, etc. The evaporator cavity is used for generating refrigerating air flow, the refrigerating air flow can flow from the evaporator cavity to the air duct, flows into the storage cavity from the air outlet, exchanges heat with objects in the storage cavity, flows back to the evaporator cavity for cooling again, and flows to the air duct for circulation after cooling. Thus, the air path circulation of the refrigerator is realized, and the air cooling refrigeration of the refrigerator is realized.

It should be noted that the return air cover 20 can be of various shapes, such as L-shaped, sloped, etc. The evaporator chamber can also be of various shapes and be located in different positions in the inner space 11. For example, the evaporator cavity may be located at the left end, the middle portion or the right end of the inner space 11, and in practical application, the evaporator cavity and the storage cavity may be laid out according to the structure of the inner space 11 of the refrigerator.

The refrigerator further includes an evaporator 30 and a fan 50, the evaporator 30 being located within the evaporator cavity. The fan 50 can drive the air flow to flow through the evaporator cavity, the air duct and the storage cavity and then flow back into the evaporator cavity through the return air inlet, so that a circulating air path is formed. Here, the evaporator 30 is configured to exchange heat with the air flow within the evaporator chamber to form a refrigerant air flow. The fan 50 provides power to the airflow.

The liner 10 also defines a blower cavity within which the blower 50 is located. The evaporator cavity, the fan cavity, the air duct and the storage cavity are sequentially communicated to form an air duct, and the fan 50 can drive airflow to sequentially circulate in the evaporator cavity, the fan cavity, the air duct and the storage cavity.

In some alternative embodiments, as shown in fig. 5, the refrigeration apparatus further includes a first direct-cooling evaporator tube 60, the first direct-cooling evaporator tube 60 being spirally disposed on the bottom wall 17 of the liner 10.

In this embodiment, the first direct-cooling evaporation tube 60 is spirally arranged on the bottom wall 17 of the inner container 10, so that the contact area between the first direct-cooling evaporation tube 60 and the bottom wall 17 of the inner container 10 can be increased, the temperature of the bottom of the inner space 11 can be reduced, and the refrigerating effect can be further improved.

In one embodiment, the density of the first direct chill evaporator tube 60 is unchanged.

In this embodiment, for a refrigerator with smaller size or more air output, the density of the first direct cooling evaporation tube 60 may be unchanged, so that the setting and installation of the first direct cooling evaporation tube 60 are facilitated.

In another embodiment, the density of the first direct cooling evaporator 60 increases gradually in a direction away from the air outlet 18.

In this embodiment, the temperature of the position in the refrigerator close to the air outlet 18 is lower, the temperature of the position far away from the air outlet 18 is higher, and most of the articles in the refrigerator are stacked in the middle, so that the temperature in the refrigerator is uneven. Along the direction of keeping away from air outlet 18, the density of first evaporating pipe increases gradually, and the temperature of the position of keeping away from the wind gap can be reduced to first cold evaporating pipe 60 like this, effectively solves the big problem of bottom difference in temperature, improves the temperature homogeneity and the refrigeration effect of freezer.

Alternatively, the first direct cooling evaporation tube 60 extends in an S-shape along the depth direction of the liner 10.

The first direct cooling evaporation tube 60 extends along the depth direction of the inner container 10, so that when the front side wall 15 and/or the rear side wall 14 of the inner container 10 are/is provided with the air outlet 18, the density of the first direct cooling evaporation tube 60 can be conveniently adjusted, the temperatures of different positions of the inner space 11 can be adjusted, and the refrigerating effect of the refrigerator can be improved.

Alternatively, when the first direct cooling evaporation tube 60 extends in an S shape along the depth direction of the inner container 10, the density of the first direct cooling evaporation tube 60 is unchanged, or when the air outlet 18 and the first direct cooling evaporation tube 60 are disposed along the depth direction of the inner container 10, the density of the first direct cooling evaporation tube 60 gradually increases along the direction away from the air outlet 18, so that the temperature uniformity of the refrigerator in the depth direction of the inner container 10 is improved.

Optionally, the first direct cooling evaporation tube 60 includes a plurality of evaporation tube groups connected end to end, each evaporation tube group including a first tube 601, a second tube 602, and a third tube 603, the first tube 601 extending along the length of the liner 10; the second pipe 602 extends along the length direction of the liner 10; the third pipe 603 is connected between the same ends of the first pipe 601 and the second pipe 602, and extends in the depth direction of the liner 10; wherein a plurality of evaporation tube groups are sequentially arranged in the depth direction of the inner container 10.

In this embodiment, the S-shaped first direct cooling evaporation tube 60 includes a plurality of evaporation tube groups, and the evaporation tube groups are sequentially disposed along the depth direction of the liner 10, so that the contact area between the first direct cooling evaporation tube 60 and the bottom wall 17 of the liner 10 is increased, and the refrigerating effect of the refrigerator in the depth direction is further improved.

Optionally, the length of the first conduit 601 and/or the length of the second conduit 602 matches the length of the storage cavity.

In this embodiment, the length of the first pipeline 601 and/or the second pipeline 602 is matched with the length of the storage cavity, that is, the length of the first pipeline 601 and/or the second pipeline 602 is the same as or similar to the length of the storage cavity, so that the refrigerating effect of the refrigerator in the length direction can be increased, and the refrigerating uniformity in the length direction can be improved.

Optionally, the liner 10 includes a first side wall and a second side wall, the second side wall is disposed opposite to the first side wall, and the first side wall and the second side wall are disposed along a depth direction of the liner 10, and the first side wall and the second side wall are provided with an air duct 16 having an air outlet 18; the first direct cooling evaporation tube 60 has a density that increases and decreases in the depth direction of the liner 10.

In this embodiment, the first sidewall and the second sidewall are disposed along the depth direction of the liner 10, that is, the first sidewall and the second sidewall are front and rear sidewalls. The front and rear side walls of the refrigerator are all air-out, the air outlet quantity of the depth direction of the refrigerator can be increased, the temperature of the position close to the first side wall and the second side wall is lower, and the temperature of the position far away from the air outlet 18 is lower, so that the density of the first direct cooling evaporating pipe 60 is increased firstly and then reduced, the temperature of the position far away from the air outlet can be reduced, and the refrigerating effect and the temperature uniformity are further improved.

Alternatively, the density of the first direct-cooling evaporation tube 60 gradually increases in a direction from the first side wall to the center of the bottom wall 17 of the inner container 10, and the density of the first direct-cooling evaporation tube 60 gradually increases in a direction from the second side wall to the center of the bottom wall 17 of the inner container 10.

In this embodiment, since the center of the bottom wall 17 of the liner 10 is the shortest distance from the first side wall and the second side wall, the density of the first direct cooling evaporation tube 60 near the center of the bottom wall 17 of the liner 10 is the greatest, so that the temperature at the center of the bottom wall 17 of the liner 10 can be further reduced, the temperature difference at the bottom of the inner space 11 can be further reduced, and the temperature uniformity can be improved.

Alternatively, when only the first sidewall is provided with the air outlet 18, the density of the first direct cooling evaporation tube 60 gradually increases in a direction from the first sidewall to the second sidewall. When only the second side wall is provided with the return air inlet, the density of the first direct cooling evaporation tube 60 gradually increases along the direction from the second side wall to the first side wall.

Alternatively, the first direct cooling evaporation tube 60 is located on the side of the bottom wall 17 of the inner container 10 facing away from the inner space 11.

In this embodiment, the first direct-cooling evaporation tube 60 is located outside the inner space 11, so as to avoid damage to the first direct-cooling evaporation tube 60 caused by the articles stored in the inner space 11, and facilitate cleaning of the inner space 11.

Optionally, a first gap exists between the first direct chill evaporation tube 60 and the first sidewall; and/or a second gap exists between the first direct chill evaporation tube 60 and the second side wall.

In this embodiment, the first direct cooling evaporation tube 60 and the first side wall and/or the second side wall have gaps, that is, because the first side wall and the second side wall are provided with the air outlet 18, the temperature near the air outlet 18 is lower, and therefore the bottom wall 17 near the first side wall and the second side wall is not provided with the first direct cooling evaporation tube 60, so that the cost can be reduced and the energy consumption can be reduced.

Alternatively, the first direct chill evaporator tube 60 is disposed in series or parallel with the evaporator 30.

In this embodiment, when the first direct-cooling evaporation tube 60 is connected in series with the evaporation tube of the evaporator 30, the temperatures of the direct-cooling evaporation tube and the evaporator 30 are consistent, so as to improve the temperature uniformity in the refrigerator. When the first direct cooling evaporation tube 60 is connected with the evaporation tube of the evaporator 30 in parallel, the evaporator 30 and the first direct cooling evaporation tube 60 can be controlled independently, and a user can select the first direct cooling evaporation tube 60 or the evaporator 30 to be opened or closed according to requirements, so that the use flexibility of the refrigerator is improved.

Alternatively, the bottom wall 17 of the liner 10 is partially raised upwardly to form a step 171, below the step 171 for placement of the compressor. Optionally, a return air cover plate 20 is disposed over the step 171, the return air cover plate 20 and the step 171 together forming an evaporator cavity. Specifically, the return air cover 20 is located in the inner space 11, and the return air cover 20 divides the inner space 11 into an evaporator chamber and a storage chamber.

Optionally, the blower 50 and the evaporator 30 are sequentially disposed along the depth direction of the liner 10, and the blower 50 is at least partially located in the first sidewall and/or the second sidewall.

In this embodiment, the blower 50 is at least partially located in the first sidewall and/or the second sidewall, that is, the blower 50 is located in the same sidewall 19 as the air duct 16, and the blower 50 is in communication with the air duct 16. The fan 50 and the air duct 16 are both positioned on the same side wall 19, so that the air flow flowing out of the fan 50 does not need to pass through a right-angle corner to the air duct 16, the loss of the air flow can be reduced, the refrigerating effect of the refrigerator is improved, and the energy consumption is reduced.

Optionally, the bottom wall 17 of the liner 10 is partially recessed to form a diversion trench, and the diversion trench is communicated with the first side wall and the second side wall, so as to guide the airflow to flow from the first side wall to the second side wall or guide the airflow to flow from the second side wall to the first side wall; wherein the first direct cooling evaporation tube 60 is located below the diversion trench.

In this embodiment, the flow guiding groove can improve the flow of the air flow at the bottom, and when the air outlet 18 is provided on the first side wall or the second side wall, the flow guiding groove can guide the air flow of the air outlet 18 to flow to the opposite side wall 19. The first direct cooling evaporating pipe 60 is located in the below of guiding gutter, and the first direct cooling evaporating pipe 60 can cool down the air current in the guiding gutter like this, and the article of bottom can not only cool down through direct cooling through the first direct cooling evaporating pipe 60 like this, can also have sufficient forced air cooling air current to cool down, and then improves the refrigeration effect of freezer.

Optionally, the quantity of guiding gutter is a plurality of, and a plurality of guiding gutters set up along the length direction of inner bag 10 interval in proper order, can increase the air current circulation of bottom like this, and then improve refrigeration effect.

Alternatively, the evaporator 30 is provided above the step 171, and the thickness direction of the evaporator 30 extends in the height direction of the liner 10.

In this embodiment, the evaporator 30 is placed on the step 171 in a "horizontal" manner, so that the height of the evaporator cavity can be reduced, and the distance between the evaporator cavity and the cabinet opening can be reduced, and thus the evaporator cavity is far away from the cold-hot junction area, and the risk of frosting is reduced. After the door body is opened like this, the top in evaporimeter chamber can not directly expose in user's sight, improves the show area, can increase freezer aesthetic property. And the upper space of the refrigerator is the most commonly utilized space of the user, so that the user experience can be improved.

Alternatively, the lower end surface of the evaporator 30 is abutted against the upper wall surface of the step 171, so that the dimension of the evaporator 30 in the height direction can be reduced, and the storage space at the top of the evaporator chamber can be increased.

Optionally, as shown in fig. 7 and 8, the refrigeration apparatus further includes a second direct-cooling evaporation tube 70, and the second direct-cooling evaporation tube 70 is provided on the side wall 19.

In this embodiment, the refrigerator forms air-cooled refrigeration of the refrigerator through the evaporator 30, the blower 50 and the air path. The second direct cooling evaporating pipe 70 is arranged on the side wall 19, on the one hand, the second direct cooling evaporating pipe 70 can improve the cooling speed inside the refrigerator and improve the refrigerating efficiency of the refrigerator. On the other hand, the second direct cooling evaporation pipe 70 can compensate the conditions of uneven air outlet and overhigh local temperature in the refrigerator, so that the temperature uniformity of the refrigerator is improved, and the storage effect of articles in the refrigerator is further improved.

Optionally, a second direct-cooling evaporation tube 70 is provided at a side of the side wall 19 facing away from the inner space 11.

Here, the second direct-cooling evaporation pipe 70 is not exposed to the inner space 11, so that the second direct-cooling evaporation pipe 70 can be protected from corrosion or damage to the second direct-cooling evaporation pipe 70.

Optionally, the second direct-cooling evaporation tube 70 includes a first direct-cooling tube 701, the first direct-cooling tube 701 is disposed on the side wall 19 having the air duct 16, the first direct-cooling tube 701 is disposed along the extending direction of the air duct 16, and the first direct-cooling tube 701 is matched with the air duct 16.

In this embodiment, the first cooling pipe 701 extends along the air duct 16, so that the first cooling pipe 701 can further reduce the temperature of the air duct 16, thereby improving the cooling speed of the refrigerator. And even the length of wind channel 16 is longer, or wind channel 16 is close to the opening and is liable to heat transfer with external environment and lead to the air-out temperature inhomogeneous, the embodiment of the present disclosure sets up first direct cooling pipe 701 in the lateral wall 19 department that wind channel 16 corresponds, can improve the air-out homogeneity of wind channel 16, and then improves the refrigeration effect of inner space 11. Moreover, because the first direct cooling pipes 701 are arranged in cooperation with the air duct 16, the density and the number of the first direct cooling pipes 701 can be smaller than the number of the evaporating pipes of the direct cooling refrigerator, so that frosting of the refrigerator can be reduced, and meanwhile, the refrigerating effect of the refrigerator is ensured.

Alternatively, the first straight cold pipe 701 is provided on the side of the air duct 16 facing away from the inner space 11, i.e. on the side of the air duct 16 facing the foam layer.

It should be noted that: the first straight cold pipe 701 is matched with the air duct 16, which means that the shape, the size, etc. of the first straight cold pipe 701 are the same as or similar to those of the air duct 16.

Optionally, one side wall 19 is provided with one or more air channels 16, and when the number of the air channels 16 is plural, the air channels 16 are sequentially arranged at intervals along the height direction of the side wall 19.

In this embodiment, at least one side wall 19 of the refrigerator is provided with the air channels 16, where the number of the air channels 16 in one side wall 19 may be one or multiple, and in practical application, a user may set the number of the air channels 16 according to the needs.

Optionally, when the number of air channels 16 is plural, each air channel 16 is provided with a first cooling pipe 701. Thus, the air flow in each air duct 16 can be further cooled through the first direct cooling pipe 701, and the cooling rate in the refrigerator is further improved.

Illustratively, one side wall 19 of the refrigerator is provided with a plurality of air channels 16, the plurality of air channels 16 comprises a first air channel 161 and a second air channel 163, the first air channel 161 is located above the second air channel 163, and the first air channel 161 and the second air channel 163 are provided with a first direct cooling pipe 701. Optionally, the plurality of air channels 16 further comprises a third air channel, which is located between the first air channel 161 and the second air channel 163, optionally also provided with a first straight cold pipe 701. This can increase the cooling effect of the side wall 19.

Optionally, as shown in fig. 8, the liner 10 further includes a third sidewall connected between the same ends of the first sidewall and the second sidewall, the third sidewall being connected to one end of the step 171, and the cavity wall of the evaporator cavity includes the third sidewall; the second direct-cooling evaporator 70 further includes a second direct-cooling pipe 702, and the second direct-cooling pipe 702 is disposed on a third sidewall, where the third sidewall corresponds to a left sidewall.

Since the inlet of the evaporator chamber is connected to the outlet of the storage chamber, that is to say, the evaporator chamber is provided with an air return opening, the air flow in the storage chamber flows into the evaporator chamber through the air return opening, and here, since the evaporator chamber is provided with the air return opening, the air flow temperature at the evaporator chamber is higher. In this embodiment, the second direct cooling pipe 702 is disposed on the third side wall, and the second direct cooling pipe 702 can reduce the temperature at the evaporator cavity, so as to improve the temperature uniformity in the refrigerator.

Optionally, the second direct cooling duct 702 has a height that is greater than the height of the return air cover plate 20. Thus, the second direct cooling pipe 702 can increase the cooling speed around the evaporator cavity, thereby improving the temperature uniformity of the refrigerator. The second direct cooling pipe 702 is located above the return air cover plate 20, and the second direct cooling pipe 702 extends from the return air cover plate 20 towards the cabinet opening, so that the temperature above the evaporator cavity is reduced, and the temperature uniformity inside the refrigerator is improved.

Optionally, the second direct cooling pipe 702 is curved, so as to increase the contact area between the second direct cooling pipe 702 and the side wall 19, and further increase the cooling speed of the second direct cooling pipe 702.

In one embodiment, as shown in fig. 1, one air outlet 18 of the front side wall 15 and the rear side wall 14 of the refrigerator, the air return cover 20 returns air, and the air return opening of the air return cover 20 is close to the other of the front side wall 15 and the rear side wall 14, so that air supply in the front-rear direction of the refrigerator is realized. Alternatively, as shown in FIG. 3, the number of evaporators 30 is one, the evaporators 30 are located in the evaporator chambers, the fans 50 are located at least partially in one of the front and rear side walls 15, 14, and the fans 50 drive air flow from the evaporator chambers to the air duct 16 and then from the air duct 16 and the air outlets 18 to the storage chambers.

In another embodiment, as shown in fig. 2, the front and rear side walls of the refrigerator are air-cooled, and the return air cover plate 20 returns air, so that the front and rear side walls are air-cooled, and the air supply quantity of the refrigerator in the front and rear directions is improved. Optionally, as shown in fig. 4, the number of the evaporators 30 is plural, the plurality of evaporators 30 includes a first evaporator 301 and a second evaporator 302, the first evaporator 301 and the second evaporator 302 are sequentially arranged at intervals along the depth direction of the liner 10, the number of fans 50 is the same as and corresponds to the number of the evaporators 30 one by one, the plurality of fans 50 includes a first fan 501 and a second fan 502, the first evaporator 301 is located at the rear side of the second evaporator 302, the first fan 501 is located at the rear side of the first evaporator 301, the second fan 502 is located at the front side of the second evaporator 302, so that the air flow in the first fan 501 drives the air flow in the evaporator cavity to flow into the air duct 16 of the first side wall after flowing through the first evaporator 301, and the air flow in the second fan 502 drives the air flow in the evaporator cavity to flow into the air duct 16 of the second side wall after flowing through the second evaporator 302.

Optionally, when one side wall 19 is provided with one or more air channels 16 and one side wall 19 is provided with a plurality of air channels 16, the air channels 16 are sequentially arranged at intervals along the height direction of the liner 10, as shown in fig. 1 and 2, the rear side wall 14 is provided with a first air channel 161 and a second air channel 163, the first air channel 161 is provided with a first air outlet 162, and the second air channel 163 is provided with a second air outlet 164, so that the air outlet area of one side wall 19 can be increased, and the refrigerating capacity of the refrigerator can be improved.

It should be noted that, when the plurality of side walls 19 are all air-out, the plurality of side walls 19 may be provided with one or more air channels 16, which is not specifically limited herein.

In some alternative embodiments, at least one of the top wall of the evaporator chamber, the side walls of the evaporator chamber, and the bottom wall of the evaporator chamber is provided with an air return opening.

In this embodiment, the evaporator chamber can return air from one direction, also can return air from a plurality of directions, so both can increase the return air volume in evaporator chamber, can also reduce the temperature rise when freezer defrosting. Specifically, when the freezer is defrosted, the heat of evaporimeter 30 department can flow to storing intracavity through the return air inlet, and at least one direction in evaporimeter chamber sets up the return air inlet, can disperse the heat of dispelling, reduces the temperature rise of freezer, prevents the chemical cargo, improves the storage effect of article.

Optionally, a second return air opening 24 is provided in the side wall of the evaporator chamber.

In this embodiment, the second air return opening 24 is provided in the side wall of the evaporator cavity facing the storage cavity, so that the air return quantity can be ensured, the blockage is not easy, and the defrosting temperature rise is lower.

For example, the evaporator cavity is provided with only the second air return opening 24, and the opening area of the second air return opening 24 is 5940mm ² The air quantity is 930L/min, but the defrosting temperature rise is only 1.1 ℃, and the normal temperature rise under the condition of no refrigeration is realized.

It should be noted that: the side wall of the evaporator chamber refers to the side of the evaporator chamber facing the storage space, and the second return air opening 24 extends at least partially in the vertical direction.

Optionally, when the top wall of the evaporator cavity is provided with the first air return opening 23, the ratio c of the area of the first air return opening 23 to the area of the second air return opening 24 is in the range of 0 < c.ltoreq.4.

In this embodiment, the top wall of the evaporator cavity may also be provided with the first air return port 23, and the arrangement of the first air return port 23 and the second air return port 24 can increase the air return quantity, disperse the heat during defrosting of the evaporator cavity, and reduce the temperature rise. When c is greater than 4, the main return air area is concentrated at the top, so that the air quantity of the S1 and S2 air supply outlets which are closer to the return air inlet is particularly large. And the temperature rise of defrosting carried on the top of the return air inlet is more than 4 ℃, the temperature rise is larger, and the risk of defrosting is high.

The return air area of the first return air opening 23 is 9426mm ² The return air area of the second return air inlet 24 is 2540mm ² When the ratio of c is 3.7, the whole air quantity 1630L/min, the average air quantity in the refrigerator is 150-180L/min, but the air quantity of two air outlets close to the air return port is 290L/min and 260L/min respectively, and the two air outlets are higher, but the temperature near the air return port is higher, so that the air quantity is larger, the whole temperature uniformity is facilitated, the highest temperature is minus 18 ℃, and the national standard is met. At the moment, the defrosting temperature rise of the top of the evaporator cavity is 3.4 ℃ and the defrosting risk is reduced. Here, the first air return port 23 is increased and kept within the above range as compared with the case where only the second air return port 24 is opened, so that the air volume can be increased, the temperature rise can be kept low, and the article storage effect can be improved.

Optionally, when the top wall of the evaporator cavity is provided with the first air return opening 23, the ratio c of the area of the first air return opening 23 to the area of the second air return opening 24 is in the range of 0 < c.ltoreq.3.

In this embodiment, the area proportion of the second return air inlet increases, can improve holistic amount of wind, reduces the refrigeration effect of freezer to further reduce the temperature rise, improve refrigeration effect. The return air area of the first return air opening 23 is 9426mm ² The return air area of the second return air inlet 24 is 3340mm ² When the ratio of c is 2.8, the whole air quantity of the refrigerator is increased to 1650L/min. The average air quantity is 160-180L/min, but the air quantity of two air outlets close to the air return port is reduced to 250 and 230L/min, the highest temperature is minus 19 ℃, the national standard is met, the temperature rise of defrosting on the top of the air return port is 2.5 ℃, and the risk of defrosting is further reduced.

Illustratively, c can be 1/3, 1/2, 1, 3/2, 2.5, 3, 3.5, 4, etc.

Alternatively, 1.ltoreq.c.ltoreq.3.

In this embodiment, the area of the first air return opening 23 at the top is larger than the area of the second air return opening 24 at the side, so that when the second air return opening 24 is limited in arrangement position, the area of the first air return opening 23 at the top is increased, the air return direction and the air return amount can be increased, and the refrigerating effect is improved.

Optionally, when the bottom wall of the evaporator cavity is further provided with the third air return port 25, the ratio d of the third air return port 25 to the second air return port 24 is in the range of 0 < d.ltoreq.1.

In this embodiment, the bottom wall of the evaporator cavity may also be provided with a third air return port 25, where the third air return port 25 can assist the second air return port 24 in returning air from multiple directions, preventing generation of a dead angle of return air, and increasing the area of return air. And further the refrigerating temperature in the refrigerator can be further reduced.

Illustratively, d may be 1/4, 1/3, 1/2, 2/3, etc.

For example, when d is 1/3, the air quantity in the refrigerator is about 1640L/min, and the return air quantity is increased. But the load temperature near the bottom of the side surface of the step is reduced from-19.2 to-19.8 ℃, which proves that the return air direction is rich, the refrigeration temperature of the load can be effectively reduced, and the refrigeration effect of the refrigerator is improved.

Optionally, 0 < d.ltoreq.1/2.

In this embodiment, when d is greater than 1/2, the area of the third air return opening 25 is larger, and the third air return opening 25 can block the effective air return area of the evaporator 30, so as to affect the total air return amount.

Optionally, 0 < d.ltoreq.1/4.

In this embodiment, when d is greater than 1/4, although the air volume in the refrigerator is increased, the increased air volume is small and occupies the air return area of the evaporator 30, so d is less than or equal to 1/4, which can increase the air return volume and ensure the air return area of the evaporator 30.

Illustratively, the return air area of the second return air inlet 24 is 5940mm ² When the area of the third air return opening 25 is 0, the average air quantity in the refrigerator is 1580L/min; the return air area of the second return air inlet 24 is 5940mm ² The area of the third return air inlet 25 is 1300mm ² When d is close to 1/4, the average air quantity in the refrigerator is 1625L/min; the return air area of the second return air inlet 24 is 5940mm ² The area of the third air return opening 25 is 1920mm ² When d is close to 1/3, the average air quantity in the refrigerator is 1633L/min; the return air area of the second return air inlet 24 is 5940mm ² The area of the third air return opening 25 is 3344mm ² When d is close to 1/2, the average air quantity in the refrigerator is 1640L/min; the return air area of the second return air inlet 24 is 5940mm ² The area of the third air return opening 25 is 5700mm ² When d is close to 1, the average air quantity in the refrigerator is 1210L/min.

From the above data, it can be seen that the air volume increases most significantly from the absence of the third return air port 25 to when d is near 4:1, and that the air volume does not increase or decrease when d is near 2:1 to 1:1, indicating that this arrangement has blocked the effective return air area to the evaporator 30.

Optionally, the return air cover 20 includes a first cover portion 21 and a second cover portion 22. The first cover plate portion 21 is at least partially disposed in the horizontal direction; the second cover plate portion 22 extends at least partially in the vertical direction and is connected to the first cover plate portion 21; the second cover plate 22 is provided with a second air return port 24.

In this embodiment, the second cover plate portion 22 extends at least partially along the vertical direction, and the second air return port 24 is disposed on the second cover plate portion 22, so that smoothness of communication between the second air return port 24 and the storage cavity can be ensured, the air return volume of the second air return port 24 is improved, and foreign matters can be prevented from falling into the second air return port 24 to block the second air return port 24.

Alternatively, when the first air return opening 23 is provided in the top wall of the evaporator chamber, the first cover plate portion 21 is provided with the first air return opening 23. In this embodiment, the first cover plate portion 21 extends at least partially in the horizontal direction, and the first air return opening 23 is provided in the first cover plate portion 21, so that top air return of the evaporator cavity can be realized.

Optionally, when the bottom wall of the evaporator cavity is further provided with a third air return opening 25, the vertical step plate is connected with the second cover plate portion 22 of the air return cover plate 20, and at least a connection portion of the vertical step plate and the second cover plate portion 22 is provided with the third air return opening 25 which is communicated with the evaporator cavity.

In this embodiment, the vertical step plate and the second cover plate 22 enclose to form a return air channel, the return air channel is communicated with the second air return opening 24 of the second cover plate 22, and meanwhile, the bottom of the return air channel is communicated with the third air return opening 25, optionally, the second air return opening 24 corresponds to the third air return opening 25, and the second air return opening 24 is communicated with the return air channel, that is, the air flow entering through the second air return opening 24 also passes through the return air channel partially, so that the return air quantity of the evaporator cavity can be improved, and the refrigerating effect can be improved.

Optionally, the vertical step plate is recessed towards a direction away from the second cover plate to form a return air groove, the third return air inlet 25 comprises the return air groove, the second cover plate portion 22 is covered on one side of the return air groove, and the third return air inlet 25 is arranged at the bottom of the return air groove.

Optionally, the relationship between the total volume V of the evaporator and the total area S of the return air inlet is: ys=v, where y is greater than or equal to 50. Here, the total area of the return air inlet means the sum of the areas of all the return air inlets.

Taking two evaporators and two air return openings as an example, the total volume of the two evaporators is V, the area of the first air return opening 23 is S1, the area of the second air return opening 24 is S2, and the total area S of the air return openings is the sum of the areas of the first air return opening 23 and the second air return opening 24.

Optionally, y is less than or equal to 1000.

So set up, according to actual refrigeration temperature requirement, can satisfy the relation between total volume V of evaporimeter and the total area S of return air inlet: ys=v, wherein y is less than or equal to 1000 on the premise that y is greater than or equal to 50, so that the actual refrigeration requirement of a user using the refrigerator can be met.

The return air cover plate 20 is provided with a return air inlet, when the refrigerator runs, air flow in the evaporator cavity flows into the air duct under the drive of the fan 50 after the temperature of the evaporator is reduced, then flows into the storage cavity through the air outlet, refrigerates articles in the storage cavity, and then flows back into the evaporator cavity through the return air inlet, so that a circulating air path of the refrigerator is formed. In the air circulation process, when the air pressure is certain and the depth of the air channel and the area of the air outlet are large enough, the size or the area of the air return opening becomes one of main factors influencing the air quantity in the air circulation process. In the embodiment of the disclosure, y is more than or equal to 50 and less than or equal to 1000, and the air supply quantity of the air outlet in the circulating air passage of the refrigerator is improved.

It will be appreciated that the total volume V of the evaporator is in mm ³ I.e. cubic mm, the total area S of the return air opening being in mm ² I.e. square millimeters, the value of y is calculated in this unit of measure. y may be a constant without units.

Optionally, y is greater than or equal to 55 and less than or equal to 700.

In the embodiment of the disclosure, y is more than or equal to 55 and less than or equal to 700, and meanwhile, the cooling speed and the cooling depth of the refrigerator are improved.

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

Claims (10)

1. A refrigeration appliance, comprising:

the inner container encloses an inner space, the inner space comprises a storage cavity and an evaporator cavity, the inner container comprises a plurality of side walls, at least one side wall is provided with an air duct with an air outlet, and the storage cavity, the evaporator cavity and the air duct form an air path;

the evaporator is positioned in the evaporator cavity;

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

the first direct cooling evaporation tube is spirally arranged on the bottom wall of the inner container;

wherein the density of the first direct cooling evaporation tube is unchanged; or,

and the density of the first direct cooling evaporation tube gradually increases along the direction away from the air outlet.

2. A refrigeration device according to claim 1, wherein,

the first direct cooling evaporating pipe comprises a plurality of evaporating pipe groups connected end to end, and each evaporating pipe group comprises:

the first pipeline extends along the length direction of the inner container;

the second pipeline extends along the length direction of the inner container;

the third pipeline is connected between the same ends of the first pipeline and the second pipeline and extends along the depth direction of the liner;

the evaporation tube groups are sequentially arranged along the depth direction of the inner container.

3. A refrigeration device according to claim 2, wherein,

the length of the first pipeline and/or the length of the second pipeline is matched with the length of the storage cavity.

4. The refrigeration appliance of claim 1 wherein said liner includes:

a first sidewall;

the second side wall is arranged opposite to the first side wall, the first side wall and the second side wall are arranged along the depth direction of the liner, and the first side wall and the second side wall are both provided with the air duct with the air outlet;

and the density of the first direct cooling evaporation tube is increased and then reduced along the depth direction of the liner.

5. A refrigeration device according to claim 4, wherein,

a first gap exists between the first direct cooling evaporation pipe and the first side wall; and/or a second gap exists between the first direct cooling evaporation tube and the second side wall.

6. A refrigeration device according to claim 4, wherein,

the bottom wall part of the inner container is upwards raised to form a step, and the lower part of the step is used for placing a compressor;

the refrigeration device further includes:

the return air cover plate is positioned above the step and is enclosed with the step to form the evaporator cavity, and the evaporator is positioned in the evaporator cavity and is positioned above the step;

wherein, the thickness direction of the evaporator extends along the height direction of the liner.

7. A refrigeration device according to claim 6, wherein,

the fan and the evaporator are sequentially arranged along the depth direction of the liner, and the fan is at least partially positioned in the first side wall and/or the second side wall.

8. A refrigeration device according to claim 4, wherein,

the bottom wall part of the liner is recessed to form a diversion trench, and the diversion trench is communicated with the first side wall and the second side wall to guide air flow to flow from the first side wall to the second side wall or guide air flow to flow from the second side wall to the first side wall;

wherein, first direct cooling evaporating pipe is located the below of guiding gutter.

9. The refrigeration appliance of claim 1 further comprising:

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

10. A refrigeration appliance according to any one of claims 1 to 9 wherein,

the first direct cooling evaporation pipe is connected with the evaporation pipe of the evaporator in parallel or in series; and/or the number of the groups of groups,

the first direct cooling evaporation tube is positioned at one side of the bottom wall of the inner container, which is away from the inner space.