阅读说明：本技术 冰箱 (Refrigerator with a door ) 是由 李高杰 宋清波 于 2020-04-26 设计创作，主要内容包括：本发明提供一种直冷冰箱,包括箱体、蒸发器和压缩机,所述箱体设有冷藏间室,所述蒸发器设置于冷藏间室上方,所述压缩机设置所述箱体的底部,其特征在于,所述冰箱还包括连通所述蒸发器和所述压缩机的回气管,所述回气管包括前段管路、后段管路和中间管路,所述前段管路连接所述蒸发器,所述后段管路连接所述压缩机；其中,所述前段管路的连接中间管路的出口点低于所述后段管路连接中间管路的入口点。(The invention provides a direct-cooling refrigerator, which comprises a refrigerator body, an evaporator and a compressor, wherein the refrigerator body is provided with a cold storage chamber, the evaporator is arranged above the cold storage chamber, and the compressor is arranged at the bottom of the refrigerator body; wherein, the outlet point of the front section pipeline connected with the middle pipeline is lower than the inlet point of the rear section pipeline connected with the middle pipeline.)

1. A direct-cooling refrigerator comprises a refrigerator body, an evaporator and a compressor, wherein the refrigerator body is provided with a cold storage chamber, the evaporator is arranged above the cold storage chamber, the compressor is arranged at the bottom of the refrigerator body,

the refrigerator also comprises an air return pipe for communicating the evaporator and the compressor, wherein the air return pipe comprises a front section pipeline, a rear section pipeline and a middle pipeline, the front section pipeline is connected with the evaporator, and the rear section pipeline is connected with the compressor;

wherein, the outlet point of the front section pipeline connected with the middle pipeline is lower than the inlet point of the rear section pipeline connected with the middle pipeline.

2. The direct-cooling refrigerator of claim 1, wherein: the outlet point of the front pipeline is arranged close to the lower side of the refrigerating compartment.

3. The direct-cooling refrigerator of claim 2, wherein: the cold-stored compartment is separated by a plurality of baffles and is formed a plurality of cold-stored compartments, the evaporimeter is simultaneously to a plurality of cold-stored compartment cooling, the laminating of middle pipeline sets up in a plurality of cold-stored compartment rear sides.

4. The direct-cooling refrigerator of claim 3, wherein: the highest position of the middle pipeline corresponds to the rear side or the lower side of the top partition plate in the plurality of partition plates along the front-rear direction.

5. The direct-cooling refrigerator according to any one of claims 1 to 4, characterized in that: the middle pipeline is in a curve shape and extends, the outlet point is located at the lowest part of the middle pipeline, and the inlet point is located at the uppermost part of the middle pipeline.

6. The direct-cooling refrigerator according to claim 5, wherein: the layout density of the middle pipelines is gradually reduced from bottom to top.

7. The direct-cooling refrigerator according to claim 5, wherein: the layout density of the middle pipelines is the same from bottom to top.

8. The direct-cooling refrigerator according to claim 5, wherein: the curved extension is a transverse reciprocating extension, so that the middle pipeline comprises a plurality of sections of transverse pipelines which are arranged in parallel, and two sides of the plurality of sections of transverse pipelines are arranged in an aligned mode.

9. The direct-cooling refrigerator according to claim 1, wherein the front-stage pipeline and the rear-stage pipeline extend vertically, respectively, and the front-stage pipeline and the rear-stage pipeline are distributed on both sides of the middle pipeline.

10. The direct-cooling refrigerator of claim 1, wherein: the box body is provided with an inner container forming the refrigerating chamber, a shell positioned on the outer side of the inner container and a heat insulation layer between the inner container and the shell, and the middle pipeline is attached to the rear wall surface of the inner container.

Technical Field

The invention relates to the technical field of refrigeration, in particular to a direct-cooling refrigerator capable of reducing the temperature difference between the upper part and the lower part of a compartment.

Background

According to the existing direct cooling refrigerator, an evaporator is arranged at the top of a refrigerator chamber, so that an ice making chamber is formed at the top of the refrigerator chamber, a cold storage chamber below the ice making chamber is cooled and sunk by air through cold energy provided by the evaporator, cold air descends from the evaporator, and hot air floats upwards from the bottom of the cold storage chamber and is cooled by the evaporator.

The mode of refrigeration to the cold-storage room is accomplished through the natural convection circulation of the air in the ice-making room at refrigerator top and the cold-storage room of refrigeration room below, causes the temperature of cold-storage room from the top down easily, and the temperature risees gradually, and along with the increase of box height, the upper and lower difference in temperature of cold-storage room can reach more than 3 ~ 5 ℃, and the temperature that often is close to evaporimeter department probably is less than 0 ℃, and the temperature that is close to cold-storage room bottom is still on the high side, can't satisfy the refrigeration demand.

Disclosure of Invention

The invention aims to provide a refrigerator, belongs to a direct-cooling refrigerator and solves the problem that the temperature difference between the upper layer and the lower layer of a refrigerating chamber in the conventional refrigerating refrigerator is overlarge.

The invention provides a direct-cooling refrigerator, which comprises a refrigerator body, an evaporator and a compressor, wherein the refrigerator body is provided with a cold storage chamber, the evaporator is arranged above the cold storage chamber, the compressor is arranged at the bottom of the refrigerator body, the refrigerator also comprises an air return pipe communicated with the evaporator and the compressor, the air return pipe comprises a front section pipeline, a rear section pipeline and a middle pipeline, the front section pipeline is connected with the evaporator, and the rear section pipeline is connected with the compressor; wherein, the outlet point of the front section pipeline connected with the middle pipeline is lower than the inlet point of the rear section pipeline connected with the middle pipeline.

As an optional technical scheme, the outlet point of the front-section pipeline is arranged close to the lower side of the refrigerating compartment.

As an optional technical solution, the refrigerating compartment is partitioned by a plurality of partition plates to form a plurality of refrigerating compartments, the evaporator simultaneously supplies cold to the plurality of refrigerating compartments, and the intermediate pipeline is attached to the rear sides of the plurality of refrigerating compartments.

As an optional technical solution, the highest position of the middle pipeline corresponds to the rear side or the lower side of the top partition plate in the plurality of partition plates along the front-rear direction.

As an optional technical solution, the intermediate pipeline is extended in a curved shape, the outlet point is located at the lowest part of the intermediate pipeline, and the inlet point is located at the highest part of the intermediate pipeline.

As an optional technical solution, the layout density of the intermediate pipelines is gradually reduced from bottom to top.

As an optional technical solution, the layout density of the intermediate pipelines is the same from bottom to top.

As an optional technical solution, the curved extension is a transverse reciprocating extension, so that the middle pipeline includes a plurality of sections of transverse pipelines arranged in parallel, and two sides of the plurality of sections of transverse pipelines are aligned.

As an optional technical solution, the front-section pipeline and the rear-section pipeline respectively extend vertically, and the front-section pipeline and the rear-section pipeline are distributed on two sides of the middle pipeline.

As an optional technical scheme, the box body is provided with an inner container forming the refrigerating chamber, a shell positioned on the outer side of the inner container and a heat insulation layer forming the space between the inner container and the shell, and the middle pipeline is attached to the rear wall surface of the inner container.

Compared with the prior art, the invention provides the direct-cooling refrigerator, the air return pipe is arranged at the rear side of the refrigerating chamber and comprises the front section pipeline, the middle pipeline and the rear section pipeline which are mutually communicated, and the outlet point of the front section pipeline connected with the middle pipeline is lower than the inlet point of the rear section pipeline connected with the middle pipeline, so that when a refrigerant flows through the air return pipe, the residual cold is utilized to refrigerate the refrigerating chamber to reduce the temperature difference between the lower refrigerating compartment and the upper refrigerating compartment of the refrigerating chamber.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

Fig. 1 is a schematic view of a rear wall of an inner container of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present invention.

Fig. 3 is a schematic view of a rear wall of an inner container of a refrigerator according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

FIG. 1 is a rear wall schematic view of an inner container of a refrigerator according to the present invention; fig. 2 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present invention.

As shown in fig. 1 and 2, the direct-cooling refrigerator 10 includes a box body, an evaporator 5 and a compressor 4, a refrigerating chamber 7 is arranged in the box body 1, the evaporator 5 is arranged above the refrigerating chamber, the compressor is arranged at the bottom of the box body, and the direct-cooling refrigerator further includes an air return pipe 2 for communicating the evaporator 5 and the compressor 4, the air return pipe 2 includes a front section pipeline 21, a rear section pipeline 22 and a middle pipeline 23, the front section pipeline 21 is connected with the evaporator 5, and the rear section pipeline 22 is connected with the compressor 4; and the exit point 211 of the front stage pipe 21 connecting the intermediate pipe 23 is lower than the entry point 221 of the rear stage pipe 22 connecting the intermediate pipe 23.

On one hand, residual cold of the refrigerant is utilized to refrigerate the refrigerating chamber 7 in the box body 1 opposite to the air return pipe 2, so that energy consumption is saved and refrigerating efficiency is improved; on the other hand, because the outlet point 211 of the front-section pipeline 21 is lower than the inlet point 221 of the rear-section pipeline 22, the refrigerant flowing out of the evaporator 5 flows downwards firstly to provide cold compensation for the refrigerating chamber 7 with relatively high temperature at the lower side, so that the cold balance between the upper part and the lower part in the refrigerating chamber 7 is quickly achieved, the temperature difference between the upper part and the lower part of the refrigerating chamber is reduced, the problem of local supercooling or overheating is avoided, and the refrigerating efficiency can be improved; in addition, the arrangement is such that, after the compressor 3 stops cooling, a part of the refrigerant is stored in the intermediate line 23, and the cold storage compartment 7 can be provided with a cold-keeping function.

As shown in fig. 1, the exit point 211 of the front-stage duct 21 is disposed near the lower side of the refrigerating compartment. The closer the outlet point of the front-stage duct 21 is to the lower side of the refrigerating compartment 7, the more the cooling compensation is preferentially provided to the region of the refrigerating compartment 7 distant from the evaporator 5, and the temperature difference between the lower side of the refrigerating compartment 7 and the upper side of the refrigerating compartment 7 is reduced. As shown in fig. 2, the refrigerating compartment 7 is partitioned by a plurality of partitions 6 to form a plurality of refrigerating compartments 72, and the evaporator 5 located at the top of the refrigerating compartment 7 is simultaneously supplied with cold toward the plurality of refrigerating compartments 72. Referring to fig. 1, the intermediate pipe 23 is disposed at the rear side of the refrigerating compartments 72, so that the refrigerant flowing out of the evaporator 5 can flow through the refrigerating compartments 72 and then return to the compressor, and the refrigerating compartments 72 can be cooled.

In this embodiment, an ice making chamber 71 is disposed at the top of the refrigerating compartment 7, the evaporator 5 is accommodated in the ice making chamber 71, and the evaporator 5 mainly provides cold energy to the ice making chamber 71, and meanwhile, the cold energy sinks into the refrigerating compartments 72 located at the lower side of the ice making chamber 71, so as to simultaneously realize cooling of the refrigerating compartments 72; in this case, because the temperature in the ice making chamber 71 is lower than the temperature in the plurality of refrigerating compartments 72, the refrigerating compartments 72 near the ice making chamber 71 are cooled faster in the refrigerating compartments 72, and the refrigerating compartments 72 farther from the ice making chamber 71 are cooled slower in speed, so that the refrigerating compartments 72 below the ice making chamber 71 are cooled by fully utilizing the refrigerant cold in the air return pipe 2 connected to the output end of the evaporator 5, and the air return pipe 2 extends downwards and is arranged upwards in the reverse direction, that is, the outlet point 211 of the front-stage pipeline 21 is lower than the inlet point 221 of the rear-stage pipeline 22 and is arranged close to the lower side, thereby providing a better cold compensation effect, and solving the problem of uneven temperature of the refrigerating compartments 7 on the lower side when the ice making chamber 71 is located at the top.

As shown in fig. 1 and 2, the highest position 232 of the intermediate duct 23 corresponds to the rear side or lower side of the top partition among the plurality of partitions 6 in the front-rear direction. Since the evaporator 5 is disposed in the ice-making chamber 71 at the top of the refrigerating compartment 7, and the refrigerating compartment 72 between the top partition and the lower side of the evaporator 5 is close to the ice-making chamber 71, the temperature is low, and in order to prevent the temperature in the refrigerating compartment from further decreasing, the temperature difference with the refrigerating compartment 72 at the bottom becomes large, and the rear side of the refrigerating compartment is generally not provided with the intermediate pipeline 23 to provide additional cooling capacity for the refrigerating compartment. The intermediate duct 23 is often disposed along the rear side of the refrigerated compartment 72 below it.

In a preferred embodiment, the middle pipe 23 is extended in a curved shape, the outlet point 211 of the front pipe 21 corresponds to the lowest part of the middle pipe 23, and the inlet point 221 of the rear pipe 22 corresponds to the highest part of the middle pipe 23. The refrigerant flows from the lowest portion to the uppermost portion of the intermediate pipe 23, and cools the plurality of refrigerating compartments 72 in the refrigerating compartment 7 from the bottom to the top, which contributes to the reduction and gradual uniformity of the difference between the upper and lower temperatures in the plurality of refrigerating compartments 72.

As shown in fig. 1, in the present embodiment, the layout density of the middle pipes 23 at the rear side of the plurality of refrigerating compartments 72 is the same from bottom to top, in which case, after the air return pipe 2 extends from bottom to top, the air return pipe and the cooling of the front refrigerating compartment 72 are compensated in opposite directions, corresponding to the cooling condition that the cooling capacity of the refrigerating compartments 72 decreases from top to bottom, and the effect is relatively good; and when the layout density of the middle pipelines 23 is the same, the preparation is easier and the production is more convenient. Wherein, the layout density refers to the layout quantity of the middle pipelines in unit area.

As shown in fig. 3, as another preferred embodiment of the present invention, compared with the above-mentioned direct-cooling refrigerator 10, the difference is that the layout density of the middle pipelines 23' at the rear side of the refrigerating chamber of the cabinet 1 in the direct-cooling refrigerator 20 in this embodiment is set to be gradually reduced from bottom to top. Because the cooling capacity of the refrigerant after passing through the evaporator 5 into the return air pipe 2 is already reduced, the layout density of the intermediate pipes 23 'gradually decreases from bottom to top, so that the intermediate pipes 23' can provide more residual cooling corresponding to the demand at the lower side of the refrigerating compartment 7, and the temperature reduction in the refrigerating compartments 72 at the lower side of the refrigerating compartment 7 is facilitated and is consistent with the temperature in the refrigerating compartments 72 at the upper side of the refrigerating compartment 7.

As shown in fig. 1 and 3, the middle pipeline 23 and the middle pipeline 23' extend in a curved shape respectively, and extend in a transverse reciprocating manner, and each of the middle pipeline and the middle pipeline comprises a plurality of sections of transverse pipelines arranged in parallel, wherein two ends of each of the plurality of sections of transverse pipelines are aligned to be arranged, so that the production control of the transverse pipelines is facilitated. In addition, the extension arrangement mode can also enable the area of the middle pipeline 23 covering the rear side of the refrigerating chamber 7 to be larger, and further provide more cold compensation.

With continued reference to fig. 1 and 3, the front-stage pipeline 21 and the rear-stage pipeline 22 respectively extend vertically, and the front-stage pipeline 21 and the rear-stage pipeline 22 are distributed on two sides of the middle pipeline 23. Therefore, the arrangement of pipelines is facilitated, and the mutual interference between the front-end pipeline 21 and the rear-end pipeline 22 or the difficulty in pipeline layout caused by the fact that the outlet point of the front-end pipeline is lower than the inlet point of the rear-end pipeline is avoided.

In addition, the refrigerator body 1 in the refrigeration refrigerators 10 and 20 includes an inner container 11 forming a refrigeration compartment, a housing located outside the inner container 11, and a heat insulation layer located between the inner container 11 and the housing 1, wherein the intermediate pipelines 23 and 23 'are respectively attached to the rear wall surface of the inner container 11, so as to be covered by the heat insulation layer, thereby avoiding the cold loss of the intermediate pipelines 23 and 23'.

In one embodiment, the intermediate pipes 23, 23' are attached to the rear wall surface of the inner container 11 by aluminum foil tapes, respectively. The area of the rear wall surface of the inner container 11 for installing the middle pipelines 23 and 23 'can be a relatively flat vertical plane, so that the middle pipelines 23 and 23' can be conveniently fixed, and the assembly process is simple and rapid.

The lower part of the box body 1 is provided with a compressor 3 and a water receiving box 4, and the water receiving box 4 is positioned below the lowest position of the middle pipeline 23 and is assembled above the compressor 3. When the refrigerant flows through the intermediate pipe 23, the intermediate pipe 23 is cooled, condensed water may be formed on the outer wall of the intermediate pipe 23, and the condensed water flows to the water receiving box 4 and is evaporated by the waste heat generated by the operation of the compressor 3.

In summary, the present invention provides a direct-cooling refrigerator 10, wherein a return pipe 2 is disposed at the rear side of a refrigerating compartment 7, the return pipe 2 comprises a front-stage pipeline 21, an intermediate pipeline 23 and a rear-stage pipeline 22 which are communicated with each other, an outlet point 211 of the front-stage pipeline 21 connected with the intermediate pipeline 22 is lower than an inlet point 221 of the rear-stage pipeline 22 connected with the intermediate pipeline 23, so that when a refrigerant flows through the return pipe 2, the refrigerating compartment 7 is cooled by the residual cold to reduce the temperature difference between the lower refrigerating compartment and the upper refrigerating compartment of the refrigerating compartment 7.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.