CN115727689A - Heat exchanger - Google Patents

Abstract

The present invention provides a heat exchanger, comprising: the heat exchanger comprises a first heat exchange part, an inlet collecting pipe and an outlet collecting pipe, wherein the first heat exchange part comprises a plurality of first flat pipes arranged at intervals, each first flat pipe comprises a first heat exchange pipe section and a second heat exchange pipe section which are connected with each other, and the first heat exchange pipe section and the second heat exchange pipe section are arranged at a preset angle; the first heat exchange pipe sections of the first flat pipes are connected with the inlet collecting pipe, and the second heat exchange pipe sections of the first flat pipes are connected with the outlet collecting pipe; at least part of the second heat exchanging part is arranged at the end part of the first heat exchanging part to form an air channel in a surrounding manner; the middle collecting pipe is provided with an inlet pipe section and an outlet pipe section which are mutually independent, the inlet end of the second heat exchanging part is connected with the inlet pipe section, and the outlet end of the second heat exchanging part is connected with the outlet pipe section. Through the technical scheme provided by the invention, the technical problem of poor heat exchange performance of the A-type heat exchanger in the prior art can be solved.

Description

Heat exchanger

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a heat exchanger.

Background

At present, in order to mount and shield wind for a conventional bent heat exchanger in the prior art, a sheet metal part is generally used for shielding the side edge of an A-type heat exchanger (namely, the heat exchanger with a bent flat tube).

However, by adopting the structure, the space occupation is large, the space is wasted, the structure is not compact enough, the heat exchange area is limited, and the heat exchange performance cannot be effectively improved.

Disclosure of Invention

The invention mainly aims to provide a heat exchanger to solve the technical problem that an A-type heat exchanger in the prior art is poor in heat exchange performance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchanger including: the heat exchanger comprises a first heat exchange part, an inlet collecting pipe and an outlet collecting pipe, wherein the first heat exchange part comprises a plurality of first flat pipes arranged at intervals, each first flat pipe comprises a first heat exchange pipe section and a second heat exchange pipe section which are connected with each other, and the first heat exchange pipe section and the second heat exchange pipe section are arranged at a preset angle; the first heat exchange pipe sections of the first flat pipes are connected with the inlet collecting pipe, and the second heat exchange pipe sections of the first flat pipes are connected with the outlet collecting pipe; at least part of the second heat exchanging part is arranged at the end part of the first heat exchanging part to form an air channel in a surrounding manner; the intermediate collecting pipe is provided with an inlet pipe section and an outlet pipe section which are mutually independent, the inlet end of the second heat exchanging part is connected with the inlet pipe section, and the outlet end of the second heat exchanging part is connected with the outlet pipe section; the inlet end of the inlet pipe section is connected with the inlet collecting pipe, and the outlet end of the outlet pipe section is connected with the outlet collecting pipe.

Furthermore, the second heat exchange part comprises at least two independently arranged heat exchange structures, the number of the intermediate collecting pipes is at least two, and the at least two heat exchange structures are arranged at intervals along the extending direction from one end of the first heat exchange part to the other end of the first heat exchange part; at least two heat exchange structures are arranged in one-to-one correspondence with at least two intermediate collecting pipes, and each heat exchange structure is connected with the corresponding intermediate collecting pipe.

Further, the second heat exchange part comprises two independently arranged heat exchange structures which are respectively arranged at two ends of the first heat exchange part; the two middle collecting pipes are arranged, the two heat exchange structures and the two middle collecting pipes are arranged in a one-to-one correspondence mode, and each heat exchange structure is connected with the corresponding middle collecting pipe.

Furthermore, the installation interval is arranged between the first heat exchange tube section and the second heat exchange tube section, the installation interval is a triangular interval, the heat exchange structure is installed in the triangular interval, the appearance of the heat exchange structure is a triangular structure or a trapezoidal structure matched with the installation interval, and at least part of the heat exchange structure is attached to the first heat exchange tube section or the second heat exchange tube section.

Further, heat transfer structure includes a plurality of second flat pipes that set up along the direction of height interval, and the entrance point and the import pipe section of the flat pipe of second are connected, and the exit end and the export pipe section of the flat pipe of second are connected.

Further, the second flat pipe comprises a first pipe section, a second pipe section and a third pipe section which are connected in sequence, the first pipe section and the third pipe section are extended along the vertical direction or in the direction of a preset angle with the vertical direction, the second pipe section is extended along the horizontal direction or in the direction of a preset angle with the horizontal direction, one end of the first pipe section, which is far away from the second pipe section, forms an inlet end of the second flat pipe, and one end of the third pipe section, which is far away from the second pipe section, forms an outlet end of the second flat pipe.

Further, along the extending direction from the bottom end of the heat exchange structure to the top end of the heat exchange structure, the lengths of the second pipe sections are gradually reduced, and the lengths of the first pipe sections and/or the lengths of the third pipe sections are gradually increased.

Furthermore, the second flat tube is of an integrally formed structure; the joint of the first pipe section and the second pipe section is of an arc-shaped bending transition structure; and/or the joint of the second pipe section and the third pipe section is an arc bending transition structure.

Furthermore, the heat exchanger also comprises a connecting pipe, and the connecting pipe and the middle collecting pipe are respectively arranged at two ends of the first heat exchanging part; the second heat exchange portion includes: two heat exchange structures that the intercommunication set up, two heat exchange structures set up respectively at the both ends of first heat exchange portion, and a heat exchange structure is connected with the connecting pipe, and another heat exchange structure is connected with middle pressure manifold to make the fluid that gets into through the import pipeline section discharge by the export pipeline section behind two heat exchange structures.

Further, the second heat exchanging portion further includes: the third flat pipe is provided with a fourth pipe section, a fifth pipe section and a sixth pipe section which are sequentially connected, and the fourth pipe section and the sixth pipe section extend along the vertical direction or extend in the direction which forms a preset angle with the vertical direction; the fourth pipe section is positioned at one end of the first heat exchanging part and connected with the middle collecting pipe, the fifth pipe section is positioned between one end of the first heat exchanging part and the other end of the first heat exchanging part, and the sixth pipe section is positioned at the other end of the first heat exchanging part and connected with the connecting pipe; the third flat pipes are arranged at intervals along the extending direction of the middle collecting pipe, a plurality of fourth pipe sections enclose a heat exchange structure, a plurality of sixth pipe sections enclose another heat exchange structure, and one heat exchange structure is connected with the other heat exchange structure through a plurality of fifth pipe sections.

Furthermore, an installation interval is arranged between the first heat exchange tube section and the second heat exchange tube section, the installation interval is a triangular interval, and at least part of the heat exchange structure is attached to the first heat exchange tube section or the second heat exchange tube section; along the extension direction of the middle collecting pipe, the lengths of fourth pipe sections of the third flat pipes are increased and then reduced, so that the fourth pipe sections form a triangular structure or a trapezoidal structure matched with the installation area; and/or, along the extending direction of middle pressure manifold, the length of the sixth pipeline section of a plurality of third flat pipes increases earlier and then reduces to make a plurality of sixth pipeline sections enclose into the triangle-shaped structure or the trapezium structure with installation interval looks adaptation.

Furthermore, the third flat tube is of an integrally formed structure; the joint of the fourth pipe section and the fifth pipe section is of an arc-shaped bending transition structure; and/or the joint of the fifth pipe section and the sixth pipe section is of an arc-shaped bending transition structure.

By applying the technical scheme of the invention, the second heat exchanging part is arranged at the end part of the first heat exchanging part, and at least part of the second heat exchanging part and the first heat exchanging part are enclosed to form the air channel, so that when air enters the air channel, the first heat exchanging part and the second heat exchanging part can exchange heat, the second heat exchanging part can play a role of wind shielding and can also exchange heat effectively, the whole heat exchanging area of the heat exchanger is increased, the heat exchanging performance is improved, the space is effectively utilized, and the compactness of the space layout is improved. Therefore, through the heat exchanger that this embodiment provided, can solve the relatively poor technical problem of heat transfer performance of the A type heat exchanger of the heat exchanger among the prior art.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

FIG. 2 illustrates a front view of a heat exchanger provided in accordance with an embodiment of the present invention;

FIG. 3 illustrates a left side view of a heat exchanger provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating an inclined arrangement of heat exchange structures in a heat exchanger according to an embodiment of the present invention;

FIG. 5 illustrates a front view of a heat exchange structure provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural diagram illustrating a heat exchange structure according to an embodiment of the present invention;

FIG. 7 illustrates a front view of a heat exchanger provided in accordance with a second embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a heat exchanger according to a second embodiment of the present invention;

fig. 9 is a schematic structural diagram of a heat exchange structure according to a second embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a first heat exchanging portion; 11. a first flat tube; 111. a first heat exchange tube section; 112. a second heat exchange tube section; 12. a fin; 20. an inlet header pipe; 30. an outlet header; 40. a second heat exchanging portion; 41. a heat exchange structure; 42. a second flat tube; 421. a first tube section; 422. a second tube section; 423. a third tube section; 43. a third flat tube; 431. a fourth tube section; 432. a fifth pipe section; 433. a sixth tube section; 50. an intermediate header; 51. an inlet pipe section; 52. an outlet pipe section; 53. a partition plate; 60. a connecting pipe; 71. an inlet connection pipe; 72. an outlet connection pipe.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

According to an embodiment of the present invention, there is provided a heat exchanger including a first heat exchanging portion 10, an inlet header 20, an outlet header 30, a second heat exchanging portion 40, and an intermediate header 50. First heat transfer portion 10 includes the first flat pipe 11 that a plurality of intervals set up, and first flat pipe 11 includes interconnect's first heat transfer pipe section 111 and second heat transfer pipe section 112, and first heat transfer pipe section 111 and second heat transfer pipe section 112 are the angle setting of predetermineeing to make first heat transfer portion 10 form A type heat exchanger structure. The first heat exchange tube sections 111 of the first flat tubes 11 are connected to the inlet header pipe 20, and the second heat exchange tube sections 112 of the first flat tubes 11 are connected to the outlet header pipe 30. At least part of the second heat exchanging part 40 is disposed at an end of the first heat exchanging part 10 to enclose an air duct. The intermediate collecting pipe 50 is provided with an inlet pipe section 51 and an outlet pipe section 52 which are independent of each other, the inlet end of the second heat exchanging part 40 is connected with the inlet pipe section 51, and the outlet end of the second heat exchanging part 40 is connected with the outlet pipe section 52; the inlet end of the inlet pipe section 51 is connected to the inlet header 20 and the outlet end of the outlet pipe section 52 is connected to the outlet header 30. It should be noted that the air duct in which at least part of the second heat exchanging portion 40 is disposed at the end of the first heat exchanging portion 10 to enclose the air duct refers to a main circulation passage of air entering the heat exchanger.

By adopting the heat exchanger provided by the embodiment, the second heat exchanging portion 40 is arranged at the end part of the first heat exchanging portion 10, and at least part of the second heat exchanging portion 40 and the first heat exchanging portion 10 are enclosed to form an air channel, so that when air enters the air channel, the first heat exchanging portion 10 and the second heat exchanging portion 40 can exchange heat, the second heat exchanging portion 40 can also exchange heat effectively while playing a wind shielding role, the whole heat exchange area of the heat exchanger is increased, the heat exchange performance is improved, the space is effectively utilized, and the compactness of the space layout is improved. Therefore, through the heat exchanger that this embodiment provided, can solve the relatively poor technical problem of heat transfer performance of the A type heat exchanger of the heat exchanger among the prior art.

Specifically, the fluid in the inlet header 20 flows into the first heat exchanging portion 10 and flows into the second heat exchanging portion 40 through the inlet pipe section 51 of the intermediate header 50, the fluid after heat exchange in the first heat exchanging portion 10 enters the outlet header 30, and the fluid after heat exchange in the second heat exchanging portion 40 enters the outlet header 30 through the outlet pipe section 52. An inlet connection 71 is provided at the inlet collecting main 20, and an outlet connection 72 is provided at the outlet collecting main 30. The inlet pipe section 51 and the outlet pipe section 52 are separated by a partition 53.

As shown in fig. 1 to 6, in the first embodiment, the second heat exchanging portion 40 includes at least two independently disposed heat exchanging structures 41, at least two intermediate collecting pipes 50 are provided, and the at least two heat exchanging structures 41 are disposed at intervals along an extending direction from one end of the first heat exchanging portion 10 to the other end of the first heat exchanging portion 10. At least two heat exchange structures 41 and at least two intermediate collecting pipes 50 are arranged in one-to-one correspondence, and each heat exchange structure 41 is connected with the corresponding intermediate collecting pipe 50. With such a structure, each heat exchange structure 41 can be conveniently communicated with the inlet header 20 and the outlet header 30 through the corresponding intermediate header 50, so that each heat exchange structure 41 can perform independent heat exchange. In addition, the arrangement direction of the at least two independent heat exchange structures 41 arranged at intervals can facilitate full utilization of space, and the heat exchange performance of the heat exchanger is effectively improved on the basis of further improving the compactness of space arrangement.

Preferably, the second heat exchanging part 40 in this embodiment includes two independently disposed heat exchanging structures 41, and the two heat exchanging structures 41 are disposed at two ends of the first heat exchanging part 10, respectively. The number of the intermediate collecting pipes 50 is two, the two heat exchange structures 41 are arranged in one-to-one correspondence with the two intermediate collecting pipes 50, and each heat exchange structure 41 is connected with the corresponding intermediate collecting pipe 50. By adopting the structure, the wind shield can effectively play a role of shielding wind, the space is fully utilized, the compactness of the structural layout is improved, and the heat exchange performance of the heat exchanger is also improved.

In this embodiment, an installation interval is provided between the first heat exchange tube section 111 and the second heat exchange tube section 112, the installation interval is a triangular interval, the heat exchange structure 41 is installed in the triangular interval, the shape of the heat exchange structure 41 is a triangular structure or a trapezoidal structure adapted to the installation interval, and at least a part of the heat exchange structure 41 is attached to the first heat exchange tube section 111 or the second heat exchange tube section 112. By adopting the structure, the wind shielding performance can be improved conveniently, the setting stability of the heat exchange structure 41 is improved, the structural layout is optimized, and the compactness of the structural layout is improved. In order to make full use of the heat exchange space of the heat exchanger and effectively play a role of wind shielding, the external dimension of the heat exchange structure 41 in the embodiment may be completely consistent with the dimension of the space between the first heat exchange tube section 111 and the second heat exchange tube section 112 of the first heat exchange portion 10, so as to make full use of the space and play a role of wind shielding.

Preferably, the included angle between the first heat exchange tube section 111 and the second heat exchange tube section 112 in the present embodiment forms a vertex angle of a triangular interval, and the vertex angle of the triangular interval is the same as the vertex angle of the triangular structure or the trapezoidal structure. With the adoption of the structure, the second heat exchanging part 40 can be filled in the installation area better, so that a blocking effect is better achieved.

Specifically, the heat exchange structure 41 in this embodiment includes a plurality of second flat tubes 42 arranged at intervals in the height direction, an inlet end of each second flat tube 42 is connected to the inlet pipe section 51, and an outlet end of each second flat tube 42 is connected to the outlet pipe section 52. By adopting the structure, a normal heat exchange flow path can be conveniently formed, so that the heat exchange efficiency is conveniently improved.

In this embodiment, the second flat pipe 42 includes the first pipe section 421, the second pipe section 422 and the third pipe section 423 that connect gradually, and first pipe section 421 and the third pipe section 423 all are along vertical direction or are the direction extension of predetermineeing the angle with vertical direction, and second pipe section 422 is along horizontal direction or is the direction extension of predetermineeing the angle with horizontal direction, and the one end that second pipe section 422 is kept away from to first pipe section 421 forms the entrance end of the flat pipe 42 of second, and the one end that second pipe section 422 is kept away from to third pipe section 423 forms the exit end of the flat pipe 42 of second. By adopting the structure, a triangular structure can be conveniently formed, and a complete heat exchange flow path is also conveniently formed. Preferably, can all set up first pipeline section 421 and third pipeline section 423 with vertical direction slope, for make first pipeline section 421 and third pipeline section 423 all to the inboard slope setting between the installation interval promptly, like this, can be convenient for carry out the drainage, also be convenient for improve heat transfer area.

Preferably, the length of the second plurality of tube segments 422 is gradually decreased, and the length of the first plurality of tube segments 421 and/or the length of the third plurality of tube segments 423 is gradually increased along the extending direction from the bottom end of the heat exchange structure 41 to the top end of the heat exchange structure 41. Preferably, the lengths of the first pipe sections 421 and the third pipe sections are gradually increased, so that a triangular structure can be conveniently formed, the triangular structure can be conveniently and fully filled at the end part of the installation area, and the wind shielding and heat exchange effects can be effectively realized.

Specifically, the second flat tube 42 in this embodiment is an integrally formed structure. The joint of the first pipe section 421 and the second pipe section 422 can be an arc-shaped bending transition structure; or the joint of the second pipe section 422 and the third pipe section 423 is in an arc bending transition structure; or the joint of the first pipe section 421 and the second pipe section 422 and the joint of the second pipe section 422 and the third pipe section 423 are both arc-shaped bending transition structures. Preferably, in this embodiment, the joint between the first pipe segment 421 and the second pipe segment 422 and the joint between the second pipe segment 422 and the third pipe segment 423 are both configured as arc-shaped bending transition structures, so that the stress concentration phenomenon at the joints is avoided, smooth transition is facilitated, and the structural strength is improved. Specifically, the second flat tube 42 in this embodiment may be formed by bending.

The two triangular heat exchange structures 41 in this embodiment are independently arranged, the first tube section 421 and the third tube section 423 in the heat exchange structure 41 perform a main heat exchange function, the second tube section 422 extends along the transverse direction, and the second tube section 422 mainly performs a function of communicating the first tube section 421 and the third tube section 423. In this embodiment, the arc-shaped bending transition structure may be a bending circle, or the bending circle may be flattened, and the bending form is not limited.

As shown in fig. 7 to 9, a second embodiment of the present invention provides a heat exchanger, and the heat exchanger in the second embodiment is different from the heat exchanger in the first embodiment mainly in that the heat exchange structure 41 of the second heat exchange portion 40 has different structures and connection manners. Specifically, the heat exchanger in this embodiment further includes a connecting pipe 60, and the connecting pipe 60 and the intermediate collecting pipe 50 are respectively disposed at two ends of the first heat exchanging portion 10. The second heat exchanging part 40 includes two heat exchanging structures 41 communicated with each other, the two heat exchanging structures 41 are respectively disposed at two ends of the first heat exchanging part 10, one heat exchanging structure 41 is connected to the connection pipe 60, and the other heat exchanging structure 41 is connected to the intermediate collecting pipe 50, so that the fluid entering through the inlet pipe section 51 passes through the two heat exchanging structures 41 and is then discharged through the outlet pipe section 52. By adopting the structure, the wind shield can effectively play a role of shielding wind, the space is fully utilized, the compactness of the structural layout is improved, and the heat exchange performance of the heat exchanger is also improved.

Specifically, the second heat exchanging portion 40 in this embodiment further includes a third flat pipe 43, the third flat pipe 43 includes a fourth pipe section 431, a fifth pipe section 432, and a sixth pipe section 433 that are connected in sequence, and both the fourth pipe section 431 and the sixth pipe section 433 extend in the vertical direction or extend in a direction forming a preset angle with the vertical direction; the fourth pipe section 431 is located at one end of the first heat exchanging part 10 and connected to the intermediate header 50, the fifth pipe section 432 is located between one end of the first heat exchanging part 10 and the other end of the first heat exchanging part 10, and the sixth pipe section 433 is located at the other end of the first heat exchanging part 10 and connected to the connection pipe 60. The third flat pipes 43 are multiple, the third flat pipes 43 are arranged at intervals along the extending direction of the middle collecting pipe 50, the fourth pipe sections 431 enclose one heat exchange structure 41, the sixth pipe sections 433 enclose another heat exchange structure 41, and one heat exchange structure 41 is connected with the other heat exchange structure 41 through the fifth pipe sections 432. By adopting the structure, the installation interval is effectively utilized, the structural layout is compact, and the heat exchange performance of the heat exchanger is also effectively improved.

Preferably, in this embodiment, the fourth pipe section 431 and the sixth pipe section 433 may both extend in a direction of a preset angle with the vertical direction, so that the fourth pipe section 431 and the sixth pipe section 433 are both inclined to the installation area between the first heat exchange pipe section 111 and the second heat exchange pipe section 112, so as to drain water and increase the heat exchange area. In this way, the length of the fifth pipe section 432 is gradually reduced in a direction from the bottom end (corresponding to the open end of the first heat exchange portion 10) to the top end (corresponding to the connection of the first heat exchange pipe section 111 and the second heat exchange pipe section 112 of the first heat exchange portion 10) of the heat exchange structure 41.

In this embodiment, an installation section is provided between the first heat exchange tube section 111 and the second heat exchange tube section 112, the installation section is a triangular section, and at least a part of the heat exchange structure 41 is attached to the first heat exchange tube section 111 or the second heat exchange tube section 112. Along the extending direction of the middle collecting pipe 50, the lengths of the fourth pipe sections 431 of the third flat pipes 43 are increased and then reduced, so that the fourth pipe sections 431 are surrounded to form a triangular structure or a trapezoidal structure matched with the installation section. Or, along the extending direction of the intermediate collecting pipe 50, the lengths of the sixth pipe segments 433 of the third flat pipes 43 are increased and then decreased, so that the sixth pipe segments 433 form a triangular structure or a trapezoidal structure matched with the installation area. Or, along the extending direction of the intermediate collecting pipe 50, the lengths of the fourth pipe sections 431 and the sixth pipe sections 433 are increased and then decreased, so that one heat exchange structure 41 surrounded by the fourth pipe sections 431 and another heat exchange structure 41 surrounded by the sixth pipe sections 433 can be surrounded to form a triangular structure or a trapezoidal structure matched with the installation area.

Preferably, the lengths of the fourth pipe segments 431 and the sixth pipe segments 433 are increased and then decreased along the extending direction of the intermediate collecting main 50. By adopting the structure, the structure is simple and compact, the structure layout is optimized, and the heat exchange performance is improved.

Specifically, the third flat tube 43 is an integrally formed structure. The joint of the fourth pipe section 431 and the fifth pipe section 432 can be in an arc bending transition structure; or the joint of the fifth pipe section 432 and the sixth pipe section 433 is an arc-shaped bending transition structure; or, the joint of the fourth pipe section 431 and the fifth pipe section 432 and the joint of the fifth pipe section 432 and the sixth pipe section 433 are both provided with an arc-shaped bending transition structure.

Preferably, in this embodiment, the joint between the fourth pipe segment 431 and the fifth pipe segment 432 and the joint between the fifth pipe segment 432 and the sixth pipe segment 433 are both configured as an arc-shaped bending transition structure, so that the stress concentration at the joint is avoided being reduced, smooth transition is facilitated, and the strength of the structure is improved. Specifically, in this embodiment, the third flat tube 43 may be formed by bending.

In the third flat tube 43 in this embodiment, the fourth tube section 431 and the sixth tube section 433 play a main heat exchange role, the fifth tube section 432 plays a role of connecting the fourth tube section 431 and the sixth tube section 433, and the shape and the structure of the fifth tube section 432 are not limited.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: second heat transfer portion 40 in this embodiment adopts the structure setting of flat pipe of heat transfer and heat exchange fin 12 at the tip of first heat transfer portion 10, when solving the problem of leaking out, has increased heat transfer area, makes the heat transfer ability show and promotes.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A heat exchanger, comprising:

the heat exchanger comprises a first heat exchange part (10), an inlet collecting pipe (20) and an outlet collecting pipe (30), wherein the first heat exchange part (10) comprises a plurality of first flat pipes (11) arranged at intervals, the first flat pipes (11) comprise a first heat exchange pipe section (111) and a second heat exchange pipe section (112) which are connected with each other, and the first heat exchange pipe section (111) and the second heat exchange pipe section (112) are arranged at a preset angle; the first heat exchange tube sections (111) of the first flat tubes (11) are connected with the inlet collecting pipe (20), and the second heat exchange tube sections (112) of the first flat tubes (11) are connected with the outlet collecting pipe (30);

the second heat exchanging part (40), at least part of the second heat exchanging part (40) is arranged at the end of the first heat exchanging part (10) to form an air channel in an enclosing manner;

the intermediate collecting pipe (50) is provided with an inlet pipe section (51) and an outlet pipe section (52) which are independent of each other, the inlet end of the second heat exchanging part (40) is connected with the inlet pipe section (51), and the outlet end of the second heat exchanging part (40) is connected with the outlet pipe section (52); the inlet end of the inlet pipe section (51) is connected with the inlet collecting pipe (20), and the outlet end of the outlet pipe section (52) is connected with the outlet collecting pipe (30).

2. The heat exchanger according to claim 1, characterized in that the second heat exchanging part (40) comprises at least two independently arranged heat exchanging structures (41), the number of the intermediate collecting pipes (50) is at least two, and the at least two heat exchanging structures (41) are arranged at intervals along the extending direction from one end of the first heat exchanging part (10) to the other end of the first heat exchanging part (10); the at least two heat exchange structures (41) and the at least two intermediate collecting pipes (50) are arranged in a one-to-one correspondence mode, and each heat exchange structure (41) is connected with the corresponding intermediate collecting pipe (50).

3. The heat exchanger according to claim 1, characterized in that the second heat exchanging portion (40) comprises two independently arranged heat exchanging structures (41), the two heat exchanging structures (41) being respectively arranged at both ends of the first heat exchanging portion (10);

the number of the intermediate collecting pipes (50) is two, the two heat exchange structures (41) and the two intermediate collecting pipes (50) are arranged in a one-to-one correspondence mode, and each heat exchange structure (41) is connected with the corresponding intermediate collecting pipe (50).

4. The heat exchanger according to claim 2 or 3, wherein the first heat exchange tube section (111) and the second heat exchange tube section (112) have a mounting interval therebetween, the mounting interval is a triangular interval, the heat exchange structure (41) is mounted in the triangular interval, the heat exchange structure (41) has a triangular structure or a trapezoidal structure adapted to the mounting interval, and at least part of the heat exchange structure (41) is attached to the first heat exchange tube section (111) or the second heat exchange tube section (112).

5. A heat exchanger according to claim 2 or 3, characterised in that the heat exchanging structure (41) comprises a plurality of second flat tubes (42) arranged at intervals in the height direction, the inlet ends of the second flat tubes (42) being connected to the inlet tube sections (51), and the outlet ends of the second flat tubes (42) being connected to the outlet tube sections (52).

6. The heat exchanger according to claim 5, characterized in that the second flat tube (42) comprises a first tube section (421), a second tube section (422) and a third tube section (423) which are connected in sequence, the first tube section (421) and the third tube section (423) both extend along a vertical direction or a direction forming a preset angle with the vertical direction, the second tube section (422) extends along a horizontal direction or a direction forming a preset angle with the horizontal direction, one end of the first tube section (421) far away from the second tube section (422) forms an inlet end of the second flat tube (42), and one end of the third tube section (423) far away from the second tube section (422) forms an outlet end of the second flat tube (42).

7. The heat exchanger according to claim 6, characterized in that the length of the plurality of second tube segments (422) is gradually decreasing and the length of the plurality of first tube segments (421) and/or the length of the plurality of third tube segments (423) is gradually increasing in the direction of extension of the bottom end of the heat exchanging structure (41) to the top end of the heat exchanging structure (41).

8. The heat exchanger according to claim 6, characterised in that the second flat tube (42) is of integrally formed construction;

the joint of the first pipe section (421) and the second pipe section (422) is of an arc-shaped bending transition structure; and/or the presence of a gas in the gas,

the joint of the second pipe section (422) and the third pipe section (423) is of an arc-shaped bending transition structure.

9. The heat exchanger according to claim 1, characterized in that the heat exchanger further comprises a connecting pipe (60), wherein the connecting pipe (60) and the intermediate collecting pipe (50) are respectively arranged at two ends of the first heat exchanging part (10); the second heat exchanging portion (40) includes:

the heat exchange structure comprises two heat exchange structures (41) which are communicated, wherein the two heat exchange structures (41) are respectively arranged at two ends of the first heat exchange part (10), one heat exchange structure (41) is connected with the connecting pipe (60), and the other heat exchange structure (41) is connected with the middle collecting pipe (50), so that fluid entering through the inlet pipe section (51) is discharged through the outlet pipe section (52) after passing through the two heat exchange structures (41).

10. The heat exchanger according to claim 9, wherein the second heat exchanging portion (40) further comprises:

the third flat pipe (43) is provided with a fourth pipe section (431), a fifth pipe section (432) and a sixth pipe section (433) which are sequentially connected, and the fourth pipe section (431) and the sixth pipe section (433) extend along the vertical direction or extend in the direction of a preset angle with the vertical direction; the fourth pipe section (431) is located at one end of the first heat exchanging part (10) and connected with the intermediate collecting pipe (50), the fifth pipe section (432) is located between one end of the first heat exchanging part (10) and the other end of the first heat exchanging part (10), and the sixth pipe section (433) is located at the other end of the first heat exchanging part (10) and connected with the connecting pipe (60);

third flat pipe (43) are a plurality of, and are a plurality of third flat pipe (43) are followed the extending direction interval of middle pressure manifold (50) sets up, and is a plurality of fourth pipeline section (431) encloses into one heat transfer structure (41), and is a plurality of sixth pipeline section (433) encloses into another heat transfer structure (41), one heat transfer structure (41) and another heat transfer structure (41) are through a plurality of fifth pipeline section (432) are connected.

11. The heat exchanger according to claim 10, characterized in that the first heat exchange tube section (111) and the second heat exchange tube section (112) have a mounting interval therebetween, the mounting interval being a triangular interval, at least part of the heat exchange structure (41) being arranged in abutment with the first heat exchange tube section (111) or the second heat exchange tube section (112);

along the extension direction of the middle collecting pipe (50), the lengths of fourth pipe sections (431) of the third flat pipes (43) are increased and then reduced, so that the fourth pipe sections (431) form a triangular structure or a trapezoidal structure matched with the installation area; and/or the presence of a gas in the gas,

along the extending direction of the middle collecting pipe (50), the lengths of sixth pipe sections (433) of the third flat pipes (43) are increased and then reduced, so that the sixth pipe sections (433) are surrounded to form a triangular structure or a trapezoidal structure matched with the installation section.

12. A heat exchanger according to claim 10, characterised in that the third flat tube (43) is of integral construction;

the joint of the fourth pipe section (431) and the fifth pipe section (432) is of an arc-shaped bending transition structure; and/or the presence of a gas in the gas,

the joint of the fifth pipe section (432) and the sixth pipe section (433) is of an arc-shaped bending transition structure.

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