CN216144206U

CN216144206U - Heat exchanger

Info

Publication number: CN216144206U
Application number: CN202121865180.1U
Authority: CN
Inventors: 刘爱学; 魏晓永; 王全海
Original assignee: Bergstrom Changzhou Heat Exchanger Co ltd
Current assignee: Bergstrom Changzhou Heat Exchanger Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-03-29
Anticipated expiration: 2031-08-10

Abstract

The disclosure provides a heat exchanger, and belongs to the technical field of air conditioners. The heat exchanger comprises two collecting pipes, a plurality of flat pipes and a plurality of spacers; the two collecting pipes are arranged in parallel; the flat pipes are arranged at intervals along the length direction of the collecting pipes, one end of each flat pipe is communicated with one of the two collecting pipes, and the other end of each flat pipe is communicated with the other of the two collecting pipes; the plurality of spacers are respectively positioned in the two collecting pipes and are arranged at intervals along the length direction of the corresponding collecting pipe, and the spacers are provided with first through holes or second through holes. This openly through the heat exchanger, can reduce refrigerant circulation resistance, improve the heat exchange efficiency of heat exchanger.

Description

Heat exchanger

Technical Field

The disclosure belongs to the technical field of air conditioners, and particularly relates to a heat exchanger.

Background

In a heat pump system, a heat exchanger is a device for transferring heat from a fluid with a higher temperature to a fluid with a lower temperature, and is often used in the technical field of air conditioning and the like.

In the related art, a heat exchanger includes two collecting pipes, a plurality of flat pipes and fins arranged in a stacked manner. Wherein, a plurality of flat pipes are arranged along the length direction interval of two pressure manifold, and the both ends of every flat pipe are linked together with two pressure manifold respectively, and the fin is located between two adjacent flat pipes. Two ends of one collecting pipe are the input end of the refrigerant and the output end of the refrigerant. Be equipped with the spacer of a plurality of interval arrangements in every collector pipe respectively, and the spacer forms a pipeline for the snakelike circulation that the refrigerant flows with collector pipe and flat pipe to lengthen the flow path of refrigerant and improve heat exchange efficiency of heat exchanger.

However, since the refrigerant is serpentine in path when flowing, the refrigerant needs to pass through a long flow path, so that the refrigerant is too large in flow resistance when flowing, and the refrigerant is not uniformly distributed in the flat tubes, thereby reducing the heat exchange efficiency of the heat exchanger.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a heat exchanger, which can reduce the circulation resistance of a refrigerant and improve the heat exchange efficiency of the heat exchanger. The technical scheme is as follows:

the embodiment of the disclosure provides a heat exchanger, which comprises two collecting pipes, a plurality of flat pipes and a plurality of spacers;

the two collecting pipes are arranged in parallel;

the flat pipes are arranged at intervals along the length direction of the collecting pipes, one end of each flat pipe is communicated with one of the two collecting pipes, and the other end of each flat pipe is communicated with the other of the two collecting pipes;

the plurality of spacers are respectively positioned in the two collecting pipes and are arranged at intervals along the length direction of the corresponding collecting pipe, and the spacers are provided with first through holes or second through holes.

In yet another implementation of the present disclosure, the area of the first through hole is smaller than the area of the second through hole.

In still another implementation of the present disclosure, a ratio of an area of the first through hole to an area of the second through hole is 0.3 to 0.8.

In yet another implementation of the present disclosure, the first through hole is a rectangular hole, and the second through hole is a semicircular hole; alternatively, the first and second electrodes may be,

the first through hole is a semicircular hole, and the second through hole is a rectangular hole.

In still another implementation of the present disclosure, the radius of the semicircular hole is 2.0-10.0mm, the long side of the rectangular hole is 1-20 mm, and the short side of the rectangular hole is 1-6 mm.

In still another implementation of the present disclosure, one of the adjacent two of the spacers has the first through hole, and the other of the adjacent two of the spacers has the second through hole.

In still another implementation manner of the present disclosure, an inner diameter of the first through hole is gradually decreased along a flow direction of the refrigerant.

In still another implementation manner of the present disclosure, an inner diameter of the second through hole is gradually decreased along a flow direction of the refrigerant.

In yet another implementation of the present disclosure, the spacer is a composite aluminum unitary structural member.

In another implementation manner of the present disclosure, the heat exchanger further includes a plurality of groups of fins, the fins are in one-to-one correspondence with the flat tubes, and each group of fins is located between two adjacent flat tubes and connected to the corresponding flat tubes.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

when the heat exchanger that provides through this disclosure embodiment is used in the air conditioner, because this heat exchanger includes a plurality of spacers, and first through-hole or second through-hole have in a plurality of spacers, so after the refrigerant enters into the pressure manifold from the entry of a pressure manifold, the refrigerant can not be blockked completely by the spacer and the flow that can only follow arranging of flat pipe appears, but also can follow and flow along the pressure manifold in first through-hole or the second through-hole, so as to reduce the resistance that the refrigerant flows, adjust the mobile form of refrigerant, alright like this can do benefit to flat pipe and obtain even fluid, finally improve the heat exchange efficiency of heat exchanger.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a heat exchanger provided by an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a spacer provided in an embodiment of the present disclosure;

FIG. 3 is a diagram illustrating the effectiveness of another spacer according to an embodiment of the present disclosure.

The symbols in the drawings represent the following meanings:

1. a header pipe;

2. flat tubes;

3. a first spacer; 31. a first through hole; 32. a second through hole;

4. and a fin.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The embodiment of the present disclosure provides a heat exchanger, as shown in fig. 1, the heat exchanger includes two collecting pipes 1, a plurality of flat pipes 2, and a plurality of spacers 3.

The two headers 1 are arranged parallel to each other.

A plurality of flat pipes 2 are arranged along the length direction interval of pressure manifold 1, and the one end of a plurality of flat pipes 2 is linked together with one in two pressure manifolds 1, and the other end of a plurality of flat pipes 2 is linked together with another in two pressure manifolds 1.

The plurality of spacers 3 are respectively located in the two collecting pipes 1 and are arranged at intervals along the length direction of the corresponding collecting pipe, and the spacers 3 are provided with first through holes 31 or second through holes 32.

With continued reference to fig. 1, optionally, the shape of the first through-hole 31 is different from the shape of the second through-hole 32.

In the above-mentioned implementation, when applying the heat exchanger that the first expert provided through this disclosed embodiment in the air conditioner, because this heat exchanger includes a plurality of spacers 3, and have first through-hole 31 or second through-hole 32 in a plurality of spacers 3, so after the refrigerant enters into pressure manifold 1 from the entry of a pressure manifold 1, the refrigerant can not be totally blocked by spacer 3 and the flow that only can only flow along arranging of flat pipe 2 appears, but also can flow along pressure manifold 1 in first through-hole 31 or the second through-hole 32, so as to reduce the resistance that the refrigerant flows, adjust the flow form of refrigerant, so alright do benefit to flat pipe and obtain even fluid, finally improve the heat exchange efficiency of heat exchanger.

The shape of first through-hole 31 sets up to be inequality with the shape of second through-hole 32, can make the refrigerant pass through like this, and during first through-hole 31 or second through-hole 32, the form that the refrigerant flows is different, and then makes the distribution that the refrigerant can be better in flat pipe 2, improves flat pipe 2's radiating efficiency.

With continued reference to fig. 1, optionally, one of the two adjacent spacers 3 has a first through hole 31 and the other of the two adjacent spacers 3 has a second through hole 32.

In the above implementation, one of two adjacent spacers 3 has the first through hole 31, and the other of two adjacent spacers 3 has the second through hole 32, that is to say, the first through hole 31 and the second through hole 32 are arranged alternately, that is to say, the refrigerant is flowing, and the refrigerant is constantly throttled through the through holes with different shapes, so that the refrigerant constantly changes the flowing form, and then the distribution uniformity of the refrigerant in the flat tubes 2 is improved, thereby improving the heat exchange efficiency of the heat exchanger.

Fig. 2 is a schematic structural diagram of a spacer provided in an embodiment of the present disclosure, and fig. 3 is a schematic structural diagram of another spacer provided in an embodiment of the present disclosure, in conjunction with fig. 2 and fig. 3, optionally, the first through hole 31 is a rectangular hole, and the second through hole 32 is a semicircular hole; alternatively, the first through hole 31 is a semicircular hole, and the second through hole 32 is a rectangular hole.

In the above implementation, the first through holes 31 are semicircular and the second through holes 32 are rectangular, or the first through holes 31 are semicircular and the second through holes 32 are rectangular, so that the flow pattern of the refrigerant in the header 1 can be limited by the semicircular and rectangular shapes, thereby improving the distribution uniformity of the refrigerant in the flat tubes 2.

With continued reference to fig. 2 and 3, the area of the first through-hole 31 is illustratively smaller than the area of the second through-hole 32.

In the above implementation manner, the flow area of the first through hole 31 is smaller than the flow area of the second through hole 32, so that the flow area of the refrigerant is continuously changed in the flow process, the flow pressure of the refrigerant is increased, and the flow speed of the refrigerant is increased.

With continued reference to fig. 2 and 3, optionally, the ratio of the area of the first through-hole 31 to the area of the second through-hole 32 is 0.3 to 0.8

In the above implementation manner, multiple times of test data prove that the flow area of the first through hole 31 is set to be 0.3 to 0.8 times of the flow area of the second through hole 32, so that the flow speed of the refrigerant can be ensured, and the flow state of the refrigerant can be better restrained, so that the refrigerant is more condensed.

In the embodiment, the radius of the semicircular hole is 2.0-10.0mm, the long edge of the rectangular hole is 1-20 mm, and the short edge of the rectangular hole is 1-6 mm.

Illustratively, the spacer 3 is a composite aluminum integral structural member.

In the above implementation, the spacer 3 is a composite aluminum integral structural member, which can improve the processing efficiency of the spacer 3, ensure the pressure-bearing capacity of the first spacer 3, and reduce the weight of the first spacer 3.

With continued reference to fig. 2 and 3, optionally, the inner diameter of the first through hole 31 is gradually reduced along the flow direction of the refrigerant.

The inner diameter of the first through hole 31 is gradually reduced along the flowing direction of the refrigerant, so that the flowing pressure of the refrigerant can be increased according to the bernoulli principle, the flowing speed of the refrigerant is increased, and the refrigerant can flow rapidly.

With continued reference to fig. 2 and 3, optionally, the inner diameter of the second through hole 32 is gradually reduced along the flow direction of the refrigerant.

The inner diameter of the second through hole 32 is gradually reduced along the flow direction of the refrigerant, so that the flow pressure of the refrigerant can be increased according to the bernoulli principle, the flow speed of the refrigerant can be increased, and the refrigerant can flow rapidly.

In this embodiment, when in use, the heat exchangers are arranged at an inclined angle, an angle between a plane formed between the two collecting pipes 1 and a horizontal plane is less than 90, and in this embodiment, an angle between a plane formed between the two collecting pipes 1 and the horizontal plane is 0 to 60 °.

Referring to fig. 1 again, the heat exchanger further includes, for example, multiple groups of fins 4, where the fins 4 correspond to the flat tubes 2 one by one, and each group of fins 4 is located between two adjacent flat tubes 2 and connected to the corresponding flat tube 2.

The multiple groups of fins 4 can further dissipate heat of the flat tubes 2, so that the refrigerant in the flat tubes 2 can dissipate heat as soon as possible after heat exchange, and the heat exchange efficiency of the heat exchanger is improved.

The fins 4 are welded on the corresponding flat pipes 2, so that the manufacturing efficiency of the heat exchanger can be improved, and the connection strength of the fins 4 and the flat pipes 2 can be increased.

The working process of the heat exchanger provided by the embodiment of the disclosure is briefly described as follows:

referring to fig. 1 again, at first, when the refrigerant enters into the header pipe 1 through the inlet of one of the header pipes 1, the refrigerant flows along the length direction of the header pipe 1, when the refrigerant is blocked by the spacer 3, the refrigerant flows into the corresponding flat pipe 2, a small part of the refrigerant can smoothly pass through the corresponding first through hole 31 or the second through hole 32 and continuously flows along the header pipe 1, so that the flow direction of the refrigerant can be increased through the first through hole 31 or the second through hole 32, the resistance to the flow of the refrigerant is reduced, and meanwhile, the flow form of the refrigerant is adjusted through the shape of the first through hole 31 or the second through hole 32, so that the flat pipe 2 can be favorably used for obtaining uniform fluid, and the heat exchange efficiency of the heat exchanger is finally improved.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A heat exchanger is characterized by comprising two collecting pipes (1), a plurality of flat pipes (2) and a plurality of spacers (3);

the two collecting pipes (1) are arranged in parallel;

the flat pipes (2) are arranged at intervals along the length direction of the collecting pipe (1), one end of each flat pipe (2) is communicated with one of the two collecting pipes (1), and the other end of each flat pipe (2) is communicated with the other of the two collecting pipes (1);

the plurality of spacers (3) are respectively positioned in the two collecting pipes (1) and are arranged at intervals along the length direction of the corresponding collecting pipe (1), and the spacers (3) are provided with first through holes (31) or second through holes (32).

2. The heat exchanger according to claim 1, characterized in that the area of the first through hole (31) is smaller than the area of the second through hole (32).

3. The heat exchanger according to claim 2, wherein the ratio of the area of the first through hole (31) to the area of the second through hole (32) is 0.3 to 0.8.

4. The heat exchanger according to any of claims 1 to 3, wherein the first through hole (31) is a rectangular hole and the second through hole (32) is a semicircular hole; alternatively, the first and second electrodes may be,

the first through hole (31) is a semicircular hole, and the second through hole (32) is a rectangular hole.

5. The heat exchanger of claim 4, wherein the radius of the semicircular hole is 2.0-10.0mm, the long side of the rectangular hole is 1-20 mm, and the short side of the rectangular hole is 1-6 mm.

6. The heat exchanger according to any of claims 1 to 3, characterized in that one of two adjacent spacers (3) has the first through hole (31) and the other of two adjacent spacers (3) has the second through hole (32).

7. The heat exchanger according to any one of claims 1 to 3, wherein the inner diameter of the first through hole (31) is gradually reduced along a flow direction of the refrigerant.

8. The heat exchanger according to any one of claims 1 to 3, wherein the inner diameter of the second through hole (32) is gradually reduced along a flow direction of the refrigerant.

9. The heat exchanger according to any of claims 1 to 3, wherein the spacer (3) is a composite aluminium integral structural member.

10. The heat exchanger according to any one of claims 1 to 3, further comprising a plurality of groups of fins (4), wherein the fins (4) correspond to the flat tubes (2) one by one, and each group of fins (4) is located between two adjacent flat tubes (2) and connected to the corresponding flat tube (2).