WO2019019710A1

WO2019019710A1 - Heat exchanger and heat exchange device

Info

Publication number: WO2019019710A1
Application number: PCT/CN2018/083497
Authority: WO
Inventors: 魏广飞; 高强; 牟守冠
Original assignee: 杭州三花微通道换热器有限公司
Priority date: 2017-07-27
Filing date: 2018-04-18
Publication date: 2019-01-31
Also published as: CN207113298U

Abstract

Disclosed are a heat exchanger (10) and a heat exchange device (1). The heat exchanger (10) comprises: a first collecting pipe (110) and a second collecting pipe (120), with an area between the first collecting pipe (110) and the second collecting pipe (120) being divided into a straight area (130) and a pre-bent straight area (140); a plurality of first flat pipes (200), the plurality of first flat pipes (200) being located at the straight area (130); a plurality of second flat pipes (300), the plurality of second flat pipes (300) being located at the pre-bent straight area (140); and fins (400), the fins (400) being arranged between adjacent first flat pipes (200) and located at the straight area (130). In a plane parallel to a face constituted of the central axis of the first collecting pipe (110) and the central axis of the second collecting pipe (120), the projections of adjacent second flat pipes (300) are at least partly overlapped.

Description

Heat exchanger and heat exchanger

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. "2017209251983" filed on July 27, 2017 by the Hangzhou Sanhua Microchannel Heat Exchanger Co., Ltd., entitled "Heat Exchanger and Heat Exchanger".

Technical field

The present application relates to the field of heat exchange technology, and in particular to a heat exchanger, a heat exchange device having the heat exchanger, and a heat exchange device.

Background technique

As an alternative technology to copper tube finned heat exchangers, multi-channel heat exchangers have attracted more and more attention in the field of air-conditioning technology and have developed rapidly in recent years.

In order to meet the limitation of different air conditioner structure sizes, multi-channel heat exchangers need to bend multi-channel heat exchangers. The main difficulty of multi-channel heat exchangers bending along the collector tube is that it is easy to cause fins. The tearing, due to the inner fin being squeezed during bending, the outer fin is torn, regardless of the tearing and squeezing of the fin, which seriously affects the reliability and appearance of the multi-channel heat exchanger.

To this end, the related art reduces the influence by increasing the bending radius, but increasing the bending radius greatly reduces the space utilization rate of the multi-channel heat exchanger in the air conditioning structural system, and also reduces the multi-channel heat transfer. The performance of the device, and some air conditioners are limited by the structure, the size of the bending radius is strictly limited, which seriously affects the application of the multi-channel heat exchanger in the air conditioner.

Summary of the invention

The present application is intended to address at least one of the technical problems existing in the prior art. To this end, the present application proposes a heat exchanger having a relatively small bending radius and improved heat exchange performance.

The application also proposes a heat exchange device having the heat exchanger.

The application also proposes a heat exchange device.

According to an embodiment of the first aspect of the present application, a heat exchanger is provided, the heat exchanger comprising: a first header and a second header, the first header and the second current The tubes are spaced apart in a predetermined direction, and the area between the first header and the second header is divided into a straight area and a pre-bending straight area, the straight area and the pre-bending a straight area is arranged along an axial direction of the first header or the second header; a plurality of first flat tubes, two ends of each of the first flat tubes and the first set respectively a flow tube is connected to the second header, a plurality of the first flat tubes are located in the straight area; a plurality of second flat tubes, two ends of each of the second flat tubes are respectively associated with the first a header is connected to the second header, a plurality of the second tubes are located in the pre-bending straight region; fins, the fins are disposed adjacent to the first flat tubes And located in the straight zone; wherein the second flat pipe is adjacent in a plane parallel to a plane formed by a central axis of the first header and a central axis of the second header At least one of the orthographic projections Partial overlap.

The heat exchanger according to the embodiment of the present application has a relatively small bending radius and improves heat exchange performance.

According to some embodiments of the present application, adjacent second flat tubes overlap each other.

According to some embodiments of the present application, the width direction of the second flat tube is at a first predetermined angle α with the axial direction of the first header and the second header, and 0°≤α< 90°.

According to some embodiments of the present application, the second flat tube is divided along its length into a first torsion section connected to the first header, and a second torsion section connected to the second header And a straight section connected between the first torsion section and the second torsion section; wherein, the central axis parallel to the first header and the central axis of the second header are formed The orthographic projections of the straight segments adjacent to the second flat tube overlap in the plane of the face.

Further, the straight sections of the adjacent second flat tubes overlap each other.

Further, a width direction of the straight section of the second flat tube is at a second predetermined angle β with the axial direction of the first header and the second header, and 0°≤β<90° .

Further, the width directions of the plurality of the second flat tubes are disposed in parallel to each other.

Further, the width directions of the at least two second flat tubes are relatively inclined.

According to some embodiments of the present application, the plurality of the second flat tubes are arranged in a plurality of rows in the pre-bending straight region, and the second flat tubes of each row are along the first header and the second current collector The axial distribution of the tubes and the plurality of rows of second flat tubes are spaced apart along the thickness direction of the heat exchanger.

Further, in a plane parallel to a plane formed by a central axis of the first header and a central axis of the second header, an orthographic projection of an adjacent second flat tube in each row at least partially overlaps .

Further, in a plane parallel to a plane formed by a central axis of the first header and a central axis of the second header, the orthographic projection of the second flat tube in at least one row has a gap and the The gap is covered by the orthographic projection of the adjacent second flat tube.

According to some embodiments of the present application, the thickness direction of each of the first flat tubes is parallel to the axial direction of the first header and the second header.

According to an embodiment of the second aspect of the present application, there is provided a heat exchange device, wherein the heat exchanger according to the embodiment of the first aspect of the present application is wound around the pre-bending flat zone The bending axis is bent, and the bending axis is parallel to the predetermined direction.

According to the heat exchanger of the present application, by using the heat exchanger according to the embodiment of the first aspect of the present application, there is an advantage that the bending radius is small, the heat exchange performance is good, and the like.

According to an embodiment of the third aspect of the present application, a heat exchange device is provided, the heat exchange device comprising: a first header and a second header, the first header and the second current collector The tubes are spaced apart along a predetermined direction, and a region between the first header and the second header is divided into a straight region and a bending region, and the straight region and the bending region are along An axial arrangement of the first header or the second header, the first header and the second header being wound around the bending zone and parallel to the predetermined direction The bending axis is bent; a plurality of first flat tubes, two ends of each of the first flat tubes are respectively connected to the first collecting tube and the second collecting tube, and the plurality of the first flat tubes Located in the straight area; a plurality of second flat tubes, a plurality of the second flat tubes are located in the bending area, and the second flat tubes are divided into the first collecting tubes along the length thereof a first torsion section, a second torsion section connected to the second header, and a straight section connected between the first torsion section and the second torsion section; fins, the fins Assume Adjacent to and between the first flat tubes; wherein, in a curved surface parallel to a central axis of the first header and a central axis of the second header The orthographic projections of the straight segments adjacent to the second flat tube overlap.

The heat exchange device according to the present application has the advantages of small bending radius, good heat exchange performance and the like.

Additional aspects and advantages of the present invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from

1 is a schematic structural view of a heat exchanger according to an embodiment of the present application.

2 is a partial structural schematic view of a heat exchanger according to an embodiment of the present application.

3 is a schematic structural view of a heat exchange device according to an embodiment of the present application.

4 is a partial structural schematic view of a heat exchange device according to an embodiment of the present application.

FIG. 5 is a partial structural schematic view of a heat exchanger according to a first alternative embodiment of the present application.

6 is a partial structural schematic view of a heat exchange device according to a second alternative embodiment of the present application.

7 is a partial structural schematic view of a heat exchanger according to a third alternative embodiment of the present application.

FIG. 8 is a partial structural schematic view of a heat exchange device according to a third alternative embodiment of the present application.

9 is a partial structural schematic view of a heat exchanger according to a fourth alternative embodiment of the present application.

FIG. 10 is a partial structural schematic view of a heat exchange device according to a fourth alternative embodiment of the present application.

11 is a partial structural schematic view of a heat exchanger according to a fifth alternative embodiment of the present application.

FIG. 12 is a partial structural schematic view of a heat exchange device according to a fifth alternative embodiment of the present application.

Reference mark:

Heat exchange device 1, bending axis L, predetermined direction M,

Heat exchanger 10,

a first header 110, a second header 120, a flat zone 130, a pre-bending flat zone 140,

First flat tube 200,

The second flat tube 300, the first torsion section 310, the second torsion section 320, the straight section 330, and the fins 400.

Detailed ways

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative only, and are not to be construed as limiting.

In the description of the present application, it is to be understood that the terms "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "axial", "radial" The orientation or positional relationship of the indications, the "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present application and simplified description, and does not indicate or imply that the device or component referred to must have a specific The orientation, construction and operation in a particular orientation are not to be construed as limiting the invention. Furthermore, features defining "first" and "second" may include one or more of the features, either explicitly or implicitly. In the description of the present application, "a plurality" means two or more unless otherwise stated.

In the description of the present application, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.

A heat exchange device 1 according to an embodiment of the present application will be described below with reference to the drawings.

As shown in FIGS. 1 to 12, the heat exchange device 1 according to the embodiment of the present application is bent by the heat exchanger 10.

A heat exchanger 10 according to an embodiment of the present application will be described first with reference to the drawings.

As shown in FIG. 1 , FIG. 2 , FIG. 5 , FIG. 7 and FIG. 9 , the heat exchanger 10 according to the embodiment of the present application includes a first header 110 , a second header 120 , and a plurality of first tubes 200 . a plurality of second flat tubes 300 and fins 400.

The first header 110 and the second header 120 are spaced apart in a predetermined direction M. For example, the first header 110 and the second header 120 are arranged in parallel in the horizontal direction and are arranged in the up and down direction, the first set The flow tube 110 is located above the second header 120, and the area between the first header 110 and the second header 120 is divided into a flat area 130 and a pre-bending flat area 140, and the flat area 130 and the pre-form The bent straight portion 140 is arranged along the axial direction of the first header 110 or the second header 120. At this time, the first header 110 and the second header 120 are both not bent and have a flat structure. Therefore, the pre-bending flat portion 140 is also a flat structure.

Two ends of each of the first flat tubes 200 are respectively connected to the first header tube 110 and the second header tube 120, and the plurality of first flat tubes 200 are located in the flat portion 130. For example, a plurality of first flat tubes 200 are disposed in parallel, and a thickness direction of each of the first flat tubes 200 is parallel to an axial direction of the first header tube 110 and the second header tube 120.

Two ends of each of the second flat tubes 300 are respectively connected to the first header tube 110 and the second header tube 120, and the plurality of second flat tubes 300 are located in the pre-bending straight portion 140.

The fins 400 are disposed between adjacent first flat tubes 200 and are located in the flat regions 130. That is, the fins 400 are disposed in the flat region 130, and the pre-bending flat regions 140 are provided without fins.

Wherein, in a plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, that is, parallel to the central axis of the first header 110 and the second header In the plane of the face formed by the central axis of 120, the orthographic projections of adjacent second flat tubes 300 overlap at least partially. In other words, for a plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, at least a portion of the adjacent second flat tube 300 is seen from a direction perpendicular to the plane. They are overlapping so that there is no gap between the two parts of the overlap.

It will be understood by those skilled in the art that adjacent second flat tubes 300 refer to two second flat tubes 300 adjacent in any direction, for example, not only included in the first header 110 and the second current collector. The two second flat tubes 300 adjacent to each other in the axial direction of the tube 120 are also included in the thickness direction D of the heat exchanger 10 (in the radial direction of the first header 110 and the second header 120). Two second flat tubes 300.

Alternatively, each of the first flat tube 200 and the second flat tube 300 may have an elliptical cross section or a racetrack shape, that is, have a long axis and a short axis orthogonal to each other.

In the heat exchange device 1 of the embodiment of the present application, as shown in FIG. 3, FIG. 4, FIG. 6, FIG. 8, FIG. 10, FIG. 12, the heat exchange device 1 is surrounded by the heat exchanger 10 in a pre-bending straight region. The bending axis L of 140 is bent, and the bending axis L is parallel to the predetermined direction M, that is, the bending axis L extends in the up and down direction. That is, after the heat exchanger 10 is bent around the bending axis L, the heat exchange device 1 is formed. It should be understood here that after the heat exchanger 10 is bent into the heat exchange device 1 around the bending axis L, the adjacent second flat tubes 300 are at least partially overlapped as viewed from the thickness direction of the heat exchange device 1.

According to the heat exchanger 10 of the embodiment of the present application, no fins are provided in the pre-bending straight portion 140, eliminating the risk of tearing and squeezing of the fin due to the bending, thereby reducing the bending radius. In turn, the space utilization rate and the scope of application are improved.

Further, in a plane parallel to the plane formed by the central axis of the first header 110 and the central axis of the second header 120, the orthographic projections of the adjacent second flat tubes 300 overlap at least partially. When the wind passes through the heat exchange device 1 bent by the heat exchanger 10, there is no gap between at least a portion of the adjacent second flat tubes 300 in the pre-bending straight portion 140, thereby effectively reducing the pre-folding The curved straight portion 140 can affect the heat exchange amount of the pre-bending flat portion 140 to improve the overall heat exchange performance due to the air leakage caused by the finless sheet.

Therefore, the heat exchanger 10 according to the embodiment of the present application can reduce the bending radius and improve the heat exchange performance.

According to the heat exchanger 1 of the present application, by using the heat exchanger 10 according to the above embodiment of the present application, there is an advantage that the bending radius is small, the heat exchange performance is good, and the like.

A heat exchanger 10 according to a specific embodiment of the present application and a heat exchange device 1 which is bent by the heat exchanger 10 will be described below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the heat exchanger 10 according to the embodiment of the present application includes a first header 110, a second header 120, a plurality of first flat tubes 200, a plurality of second flat tubes 300, and Fin 400.

Further, the adjacent second flat tubes 300 overlap each other, that is, the adjacent second flat tubes 300 are in contact with each other, thereby eliminating the gap between the adjacent second flat tubes 300 to further reduce air leakage, thereby further improving the heat exchanger. 10 heat transfer performance.

In some specific embodiments of the present application, as shown in FIG. 7, the width direction of the second flat tube 300 is at a first predetermined angle α, 0 with the axial directions of the first header 110 and the second header 120. ° ≤ α < 90 °. In other words, the width direction of the second flat tube 300 is not perpendicular to the axial direction of the first header tube 110 and the second header tube 120, that is, the second flat tube 300 and the first flat tube 200 are not disposed in parallel. Thereby, it is possible to make the plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, that is, parallel to the central axis of the first header 110 and the second In the plane of the face formed by the central axis of the header 120, the orthographic projections of adjacent second flat tubes 300 overlap at least partially to reduce air leakage in the pre-bent flat region 140.

In some specific embodiments of the present application, as shown in FIG. 1 to FIG. 4, for the unbent heat exchanger 10, at least one second flat tube 300 is divided into a first torsion section 310 along its length, The second torsion section 320 and the straight section 330. The first torsion section 310 is connected to the first header 110, the second torsion section 320 is connected to the second header 120, and the straight section 330 is connected between the first torsion section 310 and the second torsion section 320.

Wherein, in a plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, that is, parallel to the central axis of the first header 110 and the second header In the plane of the face formed by the central axis of 120, the orthographic projections of the straight sections of adjacent second flat tubes 300 overlap.

Similarly, the adjacent second flat tubes 300 refer to two second flat tubes 300 adjacent in any direction, for example, including not only the axial direction of the first header 110 and the second header 120. The adjacent two second flat tubes 300 also include two second flat tubes 300 adjacent in the thickness direction D of the heat exchanger 10.

By twisting both ends of the second flat tube 300 to form the first torsion section 310 and the second torsion section 320, respectively, the connection of the second flat tube 300 to the first header tube 110 and the second header 120 can be facilitated. Moreover, the straight section 330 of the adjacent second flat tube 300 can be at least partially free of gaps in the wind direction N, thereby preventing a large amount of heat exchange medium (such as air) from directly passing through the gap between the second flat tubes 300, thereby increasing the replacement. The effect of thermal performance.

Further, in order to eliminate the gap between the adjacent second flat tubes 300 to further reduce the air leakage, the straight sections 330 of the adjacent second flat tubes 300 overlap each other, that is, the adjacent second flat tubes 300 are in contact with each other, thereby Improve the heat transfer performance of the heat exchanger.

Specifically, as shown in FIG. 2, the width direction of the straight section of the second flat tube is at a second predetermined angle β with the axial direction of the first header 110 and the

second header

120, and 0° ≤ β < 90 °. That is, the width direction of the straight section 330 of the second flat tube 300 is not perpendicular to the axial direction of the first header tube 110 and the second header tube 120, that is, the straight section 330 of the second flat tube 300 and The first flat tubes 200 are not arranged in parallel. Thereby, it is possible to make the plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, that is, parallel to the central axis of the first header 110 and the second In the plane of the face formed by the central axis of the header 120, the orthographic projections of the straight sections 330 of adjacent second flat tubes 300 overlap each other to reduce air leakage in the pre-bent flat zone 140.

In some specific embodiments of the present application, as shown in FIG. 7, before the heat exchange device 1 is bent, that is, in the state of the heat exchanger 10, the width directions of the plurality of second flat tubes 300 are disposed in parallel with each other, and the heat exchanger After the 10 bends are formed into the heat exchange device 1, the second flat tubes 300 are distributed as shown in the example of FIG.

In other specific embodiments of the present application, when the heat exchange device 1 is not bent, that is, in the state of the heat exchanger 10, the width directions of the at least two second flat tubes 300 are relatively inclined, that is, the two second flats. The tubes 300 are arranged non-parallel, and after the heat exchanger 10 is bent to form the heat exchange device 1, the second flat tubes 300 are distributed as shown in the example of FIG.

In some specific embodiments of the present application, as shown in FIG. 5, FIG. 6, FIG. 9 to FIG. 12, the plurality of second flat tubes 300 are arranged in a plurality of rows in the pre-bending straight portion 140, and the second flat tubes in each row 300 is distributed along the axial direction of the first header 110 and the second header 120, and the plurality of rows of second flat tubes 300 are along the thickness direction D of the heat exchanger 10 (the first header 110 and the second header 120) Radial) spacing distribution.

For example, as shown in FIG. 9, when the heat exchanger 10 is not bent, all the second flat tubes 300 in each row are arranged in parallel, and after the heat exchanger 10 is bent into the heat exchange device 1, the second flat tube 300 is An example distribution as shown in FIG.

For another example, as shown in FIG. 11, before the heat exchanger 10 is bent, the second flat tubes 300 in each row are partially disposed in parallel, and the other portion is disposed obliquely with respect to the portion, and the heat exchanger 10 is bent and replaced. After the thermal device 1, the second flat tubes 300 are distributed as shown in the example of FIG.

Further, as shown in FIG. 11, when the heat exchanger 10 is not bent, the adjacent second flat tubes 300 are staggered along the axial direction of the first header 110 and the second header 120, and the heat exchanger 10 is disposed. After being bent into the heat exchange device 1, the second flat tubes 300 are distributed as shown in the example of FIG.

In some specific examples of the present application, in a plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, that is, parallel to the center of the first header 110 In the plane of the face formed by the axis and the central axis of the second header 120, the orthographic projections of adjacent second flat tubes 300 in each row at least partially overlap.

In other specific examples of the present application, in a plane parallel to the axial direction of the first header 110 and the second header 120 and parallel to the predetermined direction M, that is, parallel to the first header 110 In the plane of the face formed by the central axis and the central axis of the second header 120, the orthographic projection of the second flat tube 300 in at least one row has a gap and the gap is covered by the orthographic projection of the adjacent second flat tube 300 . Thereby, the gap between the arbitrary rows of the second flat tubes 300 is blocked by the adjacent second flat tubes 300, thereby further reducing the influence of the air leakage, thereby further improving the heat exchange performance.

Specifically, as shown in FIG. 5, the width direction of the second flat tube 300 is parallel to the axial direction of the first header tube 110 and the second header tube 120, and between the adjacent second flat tubes 300 in each row. The gap, the adjacent second flat tubes 300 are staggered in the circumferential direction of the first header 110 and the second header 120, so that the gap between adjacent second flat tubes 300 in each row is adjacent The second flat tube 300 is blocked.

Alternatively, as shown in FIG. 6, the second flat tubes 300 in each row may also be disposed relatively obliquely, that is, not arranged in parallel, and similarly, the gap between adjacent second flat tubes 300 in each row is The adjacent second flat tubes 300 are blocked.

In some specific examples of the present application, as shown in FIGS. 9 and 10, the second flat tubes 300 in each row are disposed in parallel with each other, and the second flat tubes 300 of adjacent rows are disposed obliquely to each other, that is, not parallel. Settings. For example, the width direction of one row of second flat tubes 300 is parallel to the axial direction of the first header tube 110 and the second header tube 120, and the width direction of the other row of second flat tubes 300 is opposite to the first header tube 110. It is disposed obliquely to the axial direction of the second header 120. And, the gap of the second flat tube 300 in the axial direction parallel to the axial direction of the first header 110 and the second header 120 is opposite to the first header 110 and the second header 120 in the width direction. A row of second flat tubes 300 disposed axially inclined is shielded.

In other specific examples of the present application, as shown in FIGS. 11 and 12, the second flat tube 300 in each row, the width direction of a portion of the second flat tube 300 is parallel to the first header 110 and the second current collector The axial direction of the tube 120 while the width direction of the other portion of the second flat tube 300 is inclined with respect to the axial direction of the first header tube 110 and the second header tube 120. And, in each row, the gap of the second flat tube 300 in the axial direction parallel to the first header tube 110 and the second header tube 120 is adjacent to the first header tube 110 in the width direction of the adjacent row The second flat tube 300 of the second header 120 that is disposed obliquely in the axial direction is blocked.

In some specific embodiments of the present application, as shown in FIG. 3 and FIG. 4, the heat exchange device 1 according to the embodiment of the present application includes a first header 110, a second header 120, and a plurality of first tubes. 200. A plurality of second flat tubes 300 and fins 400.

The first header 110 and the second header 120 are spaced apart in a predetermined direction M, and the area between the first header 110 and the second header 120 is divided into a flat area 130 and a bending area, which is straight The zone 130 and the bending zone are arranged along the axial direction of the first header 110 or the second header 120, and the first header 110 and the second header 120 are wound around the bending zone and parallel The bending axis L in the predetermined direction M is bent. It can be understood that the bending zone is formed after the pre-bending flat zone 140 is bent around the bending axis L. Two ends of each of the first flat tubes 200 are respectively connected to the first header tube 110 and the second header tube 120, and the plurality of first flat tubes 200 are located in the flat portion 130. A plurality of second flat tubes 300 are located in the bending zone, and the second flat tubes 300 are divided along the length direction thereof into a first torsion section 310 connected to the first header 110 and a second connection to the second header 120. The two torsional segments 320 and a straight section 330 connected between the first torsional section 310 and the second torsional section 320. The fins 400 are disposed between adjacent first flat tubes 200 and are located in the flat regions 130. Wherein, in a curved surface parallel to the central axis of the first header 110 and the central axis of the second header 120, the orthographic projections of the straight sections 330 of the adjacent second flat tubes 300 overlap, ie, The two flat tubes 300 are twisted by both ends so that the orthographic projections within the curved surface overlap.

Thus, the heat exchange device 1 according to the present application has advantages such as a small bending radius and good heat exchange performance.

Other configurations and operations of heat exchanger 10 and heat exchange device 1 in accordance with embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples or examples are included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art The scope of the present application is defined by the claims and their equivalents.

Claims

A heat exchanger, comprising:

a first header and a second header, the first header and the second header being spaced apart in a predetermined direction, between the first header and the second header The area is divided into a straight zone and a pre-bending straight zone, and the straight zone and the pre-bending straight zone are arranged along the axial direction of the first header or the second header ;

a plurality of first flat tubes, two ends of each of the first flat tubes are respectively connected to the first header and the second header, and the plurality of first tubes are located at the straight Area;

a plurality of second flat tubes, two ends of each of the second flat tubes are respectively connected to the first header and the second header, and the plurality of second tubes are located at the pre-fold Curved straight area;

a fin, the fin being disposed between the adjacent first flat tubes and located in the straight region;

Wherein, in a plane parallel to a plane formed by a central axis of the first header and a central axis of the second header, at least a portion of the orthographic projections of the adjacent second tubes overlap.
The heat exchanger according to claim 1, wherein adjacent said second flat tubes overlap each other.
The heat exchanger according to claim 1, wherein a width direction of said second flat tube is at a first predetermined angle α with an axial direction of said first header and said second header , 0 ° ≤ α < 90 °.
The heat exchanger according to claim 1, wherein said second flat tube is divided along its length direction into a first torsion section connected to said first header, and said second header a second twisting segment connected and a straight segment connected between the first twisting segment and the second twisting segment;

Wherein the orthographic projections of the straight sections adjacent to the second flat tubes overlap in a plane parallel to the plane formed by the central axis of the first header and the central axis of the second header.
The heat exchanger according to claim 4, wherein the straight sections adjacent to said second flat tubes overlap each other.
The heat exchanger according to claim 4, wherein a width direction of the straight section of the second flat tube is second with an axial direction of the first header and the second header The predetermined angle β, 0° ≤ β < 90°.
The heat exchanger according to claim 1, wherein a width direction of the plurality of the second flat tubes is disposed in parallel with each other.
The heat exchanger according to claim 1, wherein the width directions of the at least two second flat tubes are relatively inclined.
The heat exchanger according to any one of claims 1 to 8, wherein a plurality of said second flat tubes are arranged in a plurality of rows in a pre-bending straight portion, and each second second flat tube is along said The axial distribution of the first header and the second header and the plurality of rows of second flat tubes are spaced apart along the thickness direction of the heat exchanger.
The heat exchanger according to claim 9, wherein in each of the rows in a plane parallel to a central axis of said first header and a central axis of said second header The orthographic projections of adjacent second flat tubes overlap at least partially.
The heat exchanger according to claim 9, wherein at least one row is in a plane parallel to a plane formed by a central axis of said first header and a central axis of said second header The orthographic projection of the second flat tube has a gap and the gap is covered by the orthographic projection of the adjacent second flat tube.
The heat exchanger according to claim 1, wherein a thickness direction of each of said first flat tubes is parallel to an axial direction of said first header and said second header.
A heat exchange device, characterized in that the heat exchanger is bent by a heat exchanger according to any one of claims 1 to 12 around a bending axis of the pre-bending straight region The bending axis is parallel to the predetermined direction.
A heat exchange device, comprising:

a first header and a second header, the first header and the second header being spaced apart in a predetermined direction, between the first header and the second header The area is divided into a straight zone and a bending zone, and the straight zone and the bending zone are arranged along the axial direction of the first header or the second header, the first set a flow tube and the second header are bent around a bending axis located in the bending zone and parallel to the predetermined direction;

a plurality of first flat tubes, two ends of each of the first flat tubes are respectively connected to the first header and the second header, and the plurality of first tubes are located at the straight Area;

a plurality of second flat tubes, a plurality of the second flat tubes are located in the bending area, and the second flat tubes are divided along the length direction thereof into a first torsion section connected to the first header, and a second torsion section connected to the second header and a straight section connected between the first torsion section and the second torsion section;

a fin, the fin being disposed between the adjacent first flat tubes and located in the straight region;

Wherein, in a curved surface parallel to a central axis of the first header and a central axis of the second header, an orthographic projection of a straight section adjacent to the second flat tube overlaps.