CN211876505U

CN211876505U - A kind of refrigerator

Info

Publication number: CN211876505U
Application number: CN202020385275.2U
Authority: CN
Inventors: 杨优生; 孙彬; 石映晖
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-11-06
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a refrigerator, which comprises a shell, an evaporator and a fan; the shell is used for forming a heat preservation space; a storage space is arranged in the shell; the evaporator comprises at least one heat exchange tube and a plurality of fins; the heat exchange tubes are bent to form a plurality of sections of mutually parallel pipelines; the fins are of thin plate structures and comprise heat exchange surfaces; the fins are uniformly arranged on the outer side of the pipelines along the length direction of the pipelines and are fixedly connected with the pipelines; gaps are arranged between the adjacent fins; the fan is fixedly arranged in the shell and positioned on one side of the evaporator; and generating wind flow blowing to the heat exchange surface, forming flow field heat exchange in the evaporator and refrigerating the storage space. The utility model discloses a flowing air is through the clearance cluster between each pipeline and each fin, forms the torrent, increases the area of contact of flowing air and fin, prolongs the heat transfer time of flowing air and fin, improves the heat exchange efficiency of evaporimeter.

Description

A kind of refrigerator

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a refrigerator.

Background

The fins of the existing evaporator and the axis of the heat exchange pipeline tend to be vertically arranged; the fan is positioned on one side of the evaporator, causing wind from the fan to flow against the thickness of the fins. Because the thickness of the existing fins is thin, the wind can stably flow in the evaporator, the speed direction of the wind is parallel to the temperature diffusion direction, the contact rate of the wind flow field and the fins is low, and the heat exchange efficiency of the evaporator is low.

In addition, the existing evaporator fins and the heat exchange pipeline are connected together through a tube expansion process, so that the fins are in contact with the heat exchange pipeline, and heat exchange from a refrigerant in the heat exchange pipeline to the fins and then to the air side outside the evaporator is achieved. Because the tube expansion process enables the evaporator pipeline to be connected with the fins in an insufficient contact mode, the heat resistance of heat transfer between the evaporator pipeline and the fins is large, and the efficiency of the evaporator is low.

Disclosure of Invention

The speed of the wind current that generates for solving among the prior art fan tends to the problem that the heat exchange efficiency that the parallel arouses is low with the heat-transfer surface, the utility model provides a refrigerator makes wind form the torrent in the evaporimeter, improves heat exchange efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a refrigerator, which comprises a shell, an evaporator and a fan;

the shell is used for forming a heat preservation space; a storage space is arranged in the shell;

the evaporator comprises at least one heat exchange tube and a plurality of fins;

the heat exchange tube is bent to form a plurality of sections of mutually parallel pipelines;

the fins are of thin plate structures and comprise heat exchange surfaces; the fins are uniformly arranged on the outer side of the pipelines along the length direction of the pipelines and are fixedly connected with the pipelines; gaps are arranged between the adjacent fins;

the fan is fixedly arranged in the shell and positioned on one side of the evaporator; and generating wind flow blowing to the heat exchange surface, forming a flow field in the evaporator for heat exchange, and refrigerating the storage space.

In some embodiments, each of the fins is located on both sides of the pipe, is arranged in parallel with the axis of the pipe, and is manufactured integrally with the pipe.

In one embodiment, the fins are arranged at intervals; the fins on the adjacent pipelines are arranged in a staggered manner.

In one embodiment, the fins are rectangular, trapezoidal, triangular, or semi-circular in shape.

In one embodiment, each of the fins is arranged next to each other; the fins on the adjacent pipelines are arranged in a staggered manner.

In one embodiment, the fins are trapezoidal, triangular or semi-circular in shape.

In some embodiments, the conduit is partially circumferential in cross-section and includes a circumferential portion, a flat plate portion; the circumferential portion comprises a first side and a second side; the flat plate part is in a strip plate shape and is respectively connected with the first side edge and the second side edge in a sealing mode.

In some embodiments, the circumferential portion has a semi-circumferential shape in cross-section.

In some embodiments, each of the fins has a flat plate-like structure and is manufactured by integral molding with the flat plate portion; the flat plate part and the circumferential part are hermetically connected by welding.

In some embodiments, each fin is arranged perpendicular to the axis of the pipeline and is manufactured integrally with the pipeline; and the adjacent fins are arranged in a staggered manner.

The technical scheme of the utility model prior art relatively has following technological effect:

the utility model discloses a refrigerator, which comprises an evaporator and a fan, wherein the evaporator comprises at least one heat exchange tube and a plurality of fins; the heat exchange tubes are bent to form mutually parallel pipelines. The fins are of thin plate structures and comprise heat exchange surfaces; each fin is arranged at the outer side of the pipeline and is fixedly connected with the pipeline; gaps are arranged between adjacent fins. The fan is positioned at one side of the evaporator and generates flowing air which is blown to the heat exchange surface. The flowing air blown out by the fan is communicated with the pipelines and the fins through gaps to form turbulence, so that the contact area of the flowing air and the fins is increased, the heat exchange time of the flowing air and the fins is prolonged, and the heat exchange efficiency of the evaporator is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a longitudinal sectional view of a refrigerator according to the present invention;

fig. 2 is a schematic view of an example of the evaporator.

Reference numerals:

1. a compressor; 2. an evaporator; 3. a fan; 4. a housing; 5. a fresh-keeping area; 6. a freezing zone; 21. a heat exchange pipe; 22. a fin; 23. a gap; 24. an end plate; 211. a pipeline; 221. a heat exchange surface; 2111. a circumferential portion; 2112. a flat plate portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1, the refrigerator of the present invention is an air-cooled refrigerator, and includes a housing 4, a compressor 1, a fan 3, and an evaporator 2. The shell 4 is used for forming a heat preservation space, and a fresh-keeping area 5 andor a freezing area 6 is arranged in the shell 4 and used for storing articles. The compressor 1, the fan 3 and the evaporator 2 are arranged in the shell 4, and an air channel is also arranged in the shell 4 and used for communicating the evaporator 2, the preservation area 5 and the freezing area 6; the compressor 1 is connected with the evaporator 2 through a refrigerant pipeline and used for conveying a refrigerant; the fan 3 is arranged at one side of the evaporator 2, generates flowing air to be blown into the evaporator 2 to form an air flow field for heat exchange, and conveys cold energy to the fresh-keeping area 5 and/or the freezing area 6 through an air duct to realize the function of keeping fresh and/or freezing articles.

Referring to fig. 1 and 2, the evaporator 2 includes at least one heat exchange tube 21, a plurality of fins 22; the heat exchange tubes 21 are bent to form a plurality of parallel tubes 211, and the heat exchange tubes 21 are communicated with each other to transport the refrigerant. The fins 22 are of a thin plate structure; each fin 22 is uniformly arranged on the outer side of the pipeline 211 and fixedly connected with the pipeline 211; gaps 23 are provided between adjacent fins 22.

The flowing air blown out by the fan 3 blows to the pipeline 211 and the heat exchange surface 221 of the fin 22, the flowing air flows in the evaporator 2, and forms turbulence through the communication of the gaps 23 between the fins 22, the flowing direction of the flowing air is diversified, the vacuum dead angle caused by single direction of the flowing air in the existing evaporator 2 is reduced, the contact area between the flowing air and the fins 22 is increased, the contact time between the flowing air and the fins 22 is prolonged, the heat exchange between the fins 22 and the flowing air is more sufficient, and the heat exchange efficiency of the evaporator 2 is improved.

The specific structural design of the refrigerator of the present invention is described in detail below with reference to specific embodiments.

In some embodiments, referring to FIG. 1, conduit 211 is partially circumferential in cross-section, including a circumferential portion 2111, a flat portion 2112; the cross section of the circumferential portion 2111 is a partial circumference including a first side and a second side; the flat plate portion 2112 is an elongated flat plate, and is located on the opening side of the circumferential portion 2111, and is connected to the first side and the second side in a sealing manner.

In one example, the circumferential portion 2111 is half-circular in cross-section. The pipe diameter is reduced while the flow is ensured, and the efficiency of the refrigerant is improved. Of course, the cross section of the heat exchange tube 21 may have any other shape.

In some embodiments, fins 22 are disposed on both sides of tube 211, and are disposed approximately parallel to the axis of tube 211.

In one embodiment, referring to FIG. 2, each fin 22 is a flat plate rectangle that is spaced adjacent to each other such that a gap 23 is formed between each adjacent fin 22 to facilitate turbulent flow of the flowing air blown by the fan 3 through the gap 23.

Of course, each fin 22 may also be set to be a wave plate rectangle, so that the heat dissipation area of the fin 22 is increased on the premise of not increasing the occupied space, and the heat exchange efficiency is improved.

In some embodiments, referring to fig. 2, in order to further enhance and improve the turbulence effect in the evaporator 2, the fins 22 on each tube 211 are parallel to each other and the fins 22 on adjacent tube 211 are staggered, so that the flowing air passing through the gap 23 more meets the heat exchange surface 221 of the fin 22, the contact area between the flowing air and the fin 22 is increased, and the heat exchange efficiency is improved.

In one embodiment, each of the fins 22 has a trapezoidal, triangular or partially circular shape, and are disposed adjacent to each other at a distance or adjacent to each other such that a gap 23 is formed between each adjacent fin 22, thereby facilitating turbulent flow of the flowing air blown by the fan 3 through the gap 23.

Specifically, the long bottom side of the trapezoidal fin 22 is connected to the pipe 211; one side of the triangular fin 22 is connected to the pipe 211; the straight side of the partial circular shape is connected to the pipe 211. When the fin 22 is integrally formed with the flat plate portion 2112, the manufacturing is more convenient and the work efficiency is higher.

In order to further enhance and improve the turbulence effect in the evaporator 2, the fins 22 on each pipeline 211 are parallel to each other and the fins 22 on the adjacent pipelines 211 are staggered, so that more air passing through the gaps 23 meets the corresponding fins 22, the contact area between the air and the fins 22 is increased, and the heat exchange efficiency is improved.

In one example, referring to fig. 2, the heat exchange tube 21 is a single tube, and is bent into a row of mutually parallel tubes 211; the design that the space is little in the adaptation refrigerator reduces the volume of product.

In one example, fins 22 tend to be horizontally disposed when fixedly attached to tube 211.

Of course, the fins 22 may also tend to be disposed obliquely when being fixedly connected with the pipeline 211, so as to reduce the occupied space of the fins 22 with the same length; increasing the heat exchange area of the fins 22 occupying the same space.

In one embodiment, each fin 22 is integrally formed with the plate portion 2112. The tightness of the fins 22 and the pipelines 211 is improved, and the problem of large contact relaxation thermal resistance caused by connection of the pipelines 211 and the fins 22 through a tube expansion process in the conventional evaporator 2 is solved.

In an embodiment, the flat plate portion 2112 is hermetically connected to the first side and the second side by welding.

In one example, the heat exchange tube 21 is first welded to the flat plate portion 2112 through the circumferential portion 2111 to form a sealed tube; and then bent into a plurality of parallel pipeline sections 211. The process is simple and the production efficiency is high.

In one example, no fins 22 are provided at the folds. An end plate 24 for mounting the evaporator 2 is fixedly connected to the housing 4.

In one embodiment, each fin 22 is disposed perpendicular to the axis of the tube 211 and is integrally formed with the tube; the adjacent fins 22 are arranged in a staggered manner, so that the flowing air generated by the fan 3 is communicated in series through staggered gaps, turbulence is formed, and the heat exchange efficiency is improved.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A refrigerator, characterized by comprising:

the shell is used for forming a heat preservation space, and a storage space is arranged in the shell;

an evaporator comprising at least one heat exchange tube, a plurality of fins;

the heat exchange tubes are bent to form a plurality of sections of mutually parallel pipelines;

the fan is fixedly arranged in the shell and is positioned on one side of the evaporator; and generating wind flow blowing to the heat exchange surface, forming a flow field in the evaporator for heat exchange, and refrigerating the storage space.

2. The refrigerator according to claim 1, wherein the fins are respectively located on both sides of the pipe, are arranged in parallel with an axis of the pipe, and are integrally formed with the pipe.

3. The refrigerator of claim 2, wherein the fins are spaced apart from each other; the fins on the adjacent pipelines are arranged in a staggered manner.

4. The refrigerator of claim 3, wherein the fin has a shape of a rectangle, a trapezoid, a triangle, or a semicircle.

5. The refrigerator of claim 2, wherein each of the fins is arranged next to each other; the fins on the adjacent pipelines are arranged in a staggered manner.

6. The refrigerator of claim 5, wherein the fin has a shape of a trapezoid, a triangle, or a semicircle.

7. The refrigerator according to any one of claims 2 to 6, wherein the cross section of the pipe is a partial circumferential shape including a circumferential portion, a flat plate portion; the circumferential portion comprises a first side and a second side; the flat plate part is in a strip plate shape and is respectively connected with the first side edge and the second side edge in a sealing mode.

8. The refrigerator of claim 7, wherein the circumferential portion has a semi-circumferential shape in cross section.

9. The refrigerator according to claim 8, wherein each of the fins has a flat plate-like structure and is manufactured by integral molding with the flat plate portion; the flat plate part and the circumferential part are hermetically connected by welding.

10. The refrigerator according to claim 1, wherein each of the fins is disposed approximately perpendicular to an axis of the pipe and is integrally formed with the pipe; and the adjacent fins are arranged in a staggered manner.