CN212658085U

CN212658085U - Heat exchanger

Info

Publication number: CN212658085U
Application number: CN202021143554.4U
Authority: CN
Inventors: 曹荣辉; 王冠军; 兰兆忠; 魏文建
Original assignee: Zhejiang Dunan Thermal Technology Co Ltd
Current assignee: Zhejiang Dunan Thermal Technology Co Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-03-05
Anticipated expiration: 2030-06-18
Also published as: US20230184489A1; JP2023529532A; WO2021253973A1

Abstract

The utility model provides a heat exchanger, which comprises a flat tube and fins, wherein the flat tube comprises a first tube section, a bent tube section and a second tube section which are connected in sequence; the flat tubes are arranged in an array; the extending direction of the fins is perpendicular to that of the flat pipes, the fins are connected with at least one part of bent pipe sections in the plurality of bent pipe sections, and the fins cover at least one part of structures of the plurality of bent pipe sections. Because the fins are arranged at the positions of the plurality of bent pipe sections, a plurality of gaps among the plurality of bent pipe sections can be shielded by the fins in the areas where the plurality of bent pipe sections are located, so that the condition of air leakage among the gaps is avoided, and the heat exchange performance of the heat exchanger is improved; the fins can protect the bent pipe sections, and corrosion or damage of the bent pipe sections is reduced, so that the durability of the heat exchanger is improved. Moreover, the extending direction of the fins is perpendicular to that of the flat pipes, so that the fins can shield a plurality of gaps between the plurality of bent pipe sections, and the wind shielding effect is improved.

Description

Heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field particularly, relates to a heat exchanger.

Background

In the existing bending type heat exchanger, because the bending torsion of the bent pipe sections of the flat pipes is generated, no fin is arranged at the bent pipe sections, and a large gap is formed between the two bent pipe sections after bending, air leakage can be generated, and the heat exchange performance is influenced. And the protection of fins is not provided, the bent pipe sections of the flat pipes are directly exposed and leaked outside, and the flat pipes are easily damaged by corrosion and external force.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heat exchanger to improve heat transfer performance and the durability of heat exchanger.

In order to achieve the above object, the utility model provides a heat exchanger, include: the flat pipe comprises a first pipe section, a bent pipe section and a second pipe section which are connected in sequence; the flat tubes are arranged in an array mode, and a gap is formed between every two adjacent bent tube sections; the extending direction of the fins is perpendicular to that of the flat pipes, the fins are connected with at least one part of the bent pipe sections, and gaps in the bent pipe sections are covered by the fins.

Further, the fin includes baffle, first end plate and second end plate, first end plate with the second end plate sets up respectively the both ends of baffle, wherein, the baffle shelters from a plurality ofly one side of bend section, first end plate with the second end plate is with a plurality of two bend section one-to-one in the bend section is connected.

Furthermore, the number of the fins is multiple, the baffle of at least one of the fins shields one side of the multiple bent tube sections, and the baffles of the other fins of the multiple fins shield the other side of the multiple bent tube sections.

Further, the fin is provided with a plurality of grooves which are arranged at intervals along the length direction of the fin, and at least part of structure of each bent pipe section is located in one groove of the grooves.

Furthermore, the number of the grooves is equal to that of the bent pipe sections, and the bent pipe sections and the grooves are arranged in a one-to-one correspondence mode.

Further, the part of the fin between two adjacent bent pipe sections is of an arc structure, a flat plate structure or a V-shaped structure.

Further, the number of the grooves is larger than that of the bent pipe sections; and at least one groove which is not matched with the bent pipe section is arranged between two adjacent bent pipe sections.

Further, the fin includes a plurality of folded plates of connecting in order, and adjacent two the folded plate is V type structure setting, adjacent two be provided with one between the folded plate the bending section.

Further, the fin is made of aluminum foil.

Further, the potential of the fin is lower than that of the bent tube section.

The technical scheme of the utility model is applied, a heat exchanger is provided, the heat exchanger comprises a flat pipe and a fin, wherein, the flat pipe comprises a first pipe section, a bend pipe section and a second pipe section which are connected in sequence; the flat tubes are arranged in an array; the extending direction of the fins is perpendicular to that of the flat pipes, the fins are connected with at least one part of bent pipe sections in the plurality of bent pipe sections, and the fins cover at least one part of structures of the plurality of bent pipe sections. By adopting the scheme, the fins are arranged at the positions of the plurality of bent pipe sections, so that a plurality of gaps among the plurality of bent pipe sections can be shielded by the fins in the areas where the plurality of bent pipe sections are located, thereby avoiding the condition of air leakage among the gaps and improving the heat exchange performance of the heat exchanger; moreover, the bent pipe sections can be protected by arranging the fins, and corrosion or damage of the bent pipe sections is reduced, so that the durability of the heat exchanger is improved. Moreover, the extending direction of the fins is perpendicular to that of the flat pipes, so that the fins can shield a plurality of gaps between the plurality of bent pipe sections, and the wind shielding effect is improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, 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 shows a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

FIG. 2 shows a schematic structural view of the heat exchanger of FIG. 1 before bending;

FIG. 3 shows a cross-sectional view of the heat exchanger of FIG. 2 at the location of the tube bends and fins;

fig. 4 shows a cross-sectional view of a heat exchanger provided in a second embodiment of the present invention at the location of the bend sections and fins;

fig. 5 shows a cross-sectional view of a heat exchanger provided in a third embodiment of the present invention at the location of a bend section and a fin;

fig. 6 shows a cross-sectional view of a heat exchanger at the location of the bend sections and fins according to a fourth embodiment of the present invention;

fig. 7 shows a cross-sectional view of a heat exchanger at the location of the bend sections and fins according to a fifth embodiment of the present invention;

fig. 8 shows a cross-sectional view of a heat exchanger at the location of the bend sections and fins according to a sixth embodiment of the present invention;

fig. 9 shows a cross-sectional view of a heat exchanger at the location of the bend sections and fins according to a seventh embodiment of the invention;

fig. 10 shows a cross-sectional view of a heat exchanger provided in an eighth embodiment of the present invention at the location of the bend sections and fins.

Wherein the figures include the following reference numerals:

10. flat tubes; 11. a first tube section; 12. bending the pipe section; 13. a second tube section; 20. a fin; 21. a baffle plate; 22. a first end plate; 23. a second end plate; 24. a groove; 25. folding the plate; 30. a header.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in the drawings, embodiments of the present invention provide a heat exchanger, including: the flat pipe 10 comprises a first pipe section 11, a bent pipe section 12 and a second pipe section 13 which are connected in sequence; the flat tubes 10 are multiple, the flat tubes 10 are arranged in an array, and a gap is formed between every two adjacent bent tube sections 12; the fin 20, the extending direction of fin 20 is perpendicular to the extending direction of flat pipe 10, fin 20 is connected with at least a part of bend section 12 in a plurality of bend sections 12, fin 20 covers the gap in a plurality of bend sections 12.

By adopting the scheme, because the fins 20 are arranged at the positions of the plurality of bent pipe sections 12, a plurality of gaps among the plurality of bent pipe sections 12 can be shielded by the fins 20 in the areas where the plurality of bent pipe sections 12 are located, so that the condition of air leakage among the gaps is avoided, and the heat exchange performance of the heat exchanger is improved; moreover, by providing the fins 20, the bent tube section 12 can be protected, and corrosion or damage of the bent tube section 12 can be reduced, thereby improving durability of the heat exchanger. Moreover, the extending direction of the fins 20 is perpendicular to the extending direction of the flat tubes 10, so that the fins 20 can shield a plurality of gaps between the plurality of bent tube sections 12, and the wind shielding effect is improved.

The fins 20 may be made of a metal material with good ductility, and during the bending of the bent tube sections 12, the fins 20 are easy to deform along with the bent tube sections 12, so that after the bent tube sections 12 are bent, the fins 20 still block a plurality of gaps between the plurality of bent tube sections 12.

As shown in fig. 3 and 4, the fin 20 includes a baffle plate 21, a first end plate 22 and a second end plate 23, the first end plate 22 and the second end plate 23 are respectively disposed at both ends of the baffle plate 21, wherein the baffle plate 21 shields one side of the plurality of bent tubes 12, and the first end plate 22 and the second end plate 23 are connected to two bent tubes 12 of the plurality of bent tubes 12 in a one-to-one correspondence. The fixing of the fins 20 is achieved by the connection of the first end plate 22 and the second end plate 23 to the two bent tube sections 12, respectively. The plurality of gaps between the plurality of bent pipe sections 12 can be shielded by the baffle 21 to avoid air leakage from the gaps. Moreover, the structure is simple and the manufacturing is convenient by adopting the arrangement.

Further, the fins 20 may be provided in plural, the baffle plate 21 of at least one fin 20 of the plural fins 20 blocks one side of the plural bent tube sections 12, and the baffle plates 21 of the other fins 20 of the plural fins 20 block the other side of the plural bent tube sections 12. Therefore, the fins 20 are arranged on the two sides of the bent pipe sections 12, so that the shielding effect on gaps can be improved, and the bent pipe sections 12 can be better protected. Here, both sides of the plurality of bent pipe sections 12 may be understood as outer and inner sides of the plurality of bent pipe sections 12 after the bent pipe sections 12 are bent.

As shown in fig. 5-9, the fin 20 has a plurality of grooves 24, the plurality of grooves 24 being spaced apart along the length of the fin 20, at least a portion of the structure of each tube bend segment 12 being located within one of the plurality of grooves 24. Therefore, the fin 20 is high in connection strength with the plurality of bent pipe sections 12, the fin 20 is easy to deform in the process of bending along with the bent pipe sections 12, and gaps can be well shielded after deformation. Wherein the fins 20 may be provided in a wave-shaped configuration.

Wherein, the number of the grooves 24 can be set to be equal to the number of the bent pipe sections 12, and the plurality of bent pipe sections 12 are arranged in one-to-one correspondence with the plurality of grooves 24.

Alternatively, the number of grooves 24 may be set larger than the number of bend sections 12; between two adjacent pipe bends 12 there is at least one recess 24 which is not fitted with a pipe bend 12. So that the fins 20 are more easily deformed during bending with the tube bend 12.

In the above embodiment, the portions of the fins 20 between two adjacent bent tube sections 12 may be provided in an arc-shaped structure, a flat plate structure, or a V-shaped structure.

In another embodiment, as shown in fig. 10, the fin 20 comprises a plurality of flaps 25 connected in series, two adjacent flaps 25 are arranged in a V-shaped configuration, and a bent tube segment 12 is arranged between two adjacent flaps 25. Therefore, the fins 20 shield a plurality of gaps in the plurality of bent pipe sections 12, and the fins 20 can not be separated from the bent pipe sections 12 after being bent along with the bent pipe sections 12, so that the connecting effect is good.

In the above embodiment, the fin 20 is made of aluminum foil. Because the aluminum foil material has good thermal conductivity and is easy to deform, the aluminum foil material is easy to deform along with the bent pipe section 12 in the bending process of the bent pipe section 12, the shielding of a gap is kept, and the heat exchange and protection effects are improved.

Alternatively, the fins 20 are welded to the bent tube sections 12, so that the connection strength is high. The aluminum foil can be formed by compounding two or more layers, wherein one layer has high melting point, the other layer has low melting point, or the surface layer has low melting point and the middle layer has high melting point. During welding, a layer with a lower melting point is fitted to the pipe bend 12.

In the above embodiment, the potential of the fin 20 is lower than that of the bent tube section 12. Therefore, in the process of using the heat exchanger, if corrosion occurs, the fins 20 with lower potential are corroded first, and then the bent pipe section 12 is corroded, so that the bent pipe section 12 is protected through the fins 20, and the durability of the heat exchanger is improved.

Optionally, the heat exchanger further comprises primary fins disposed between adjacent first tube segments 11 and between adjacent second tube segments 13. Can improve heat transfer area and heat transfer effect through setting up main fin to can protect flat pipe 10. Specifically, the primary fins extend in the extending direction of the first tube section 11 and the second tube section 13.

In the above embodiment, the heat exchanger further comprises two headers 30, wherein each first tube segment 11 is connected to one header 30, and each second tube segment 13 is connected to the other header 30. The extending direction of the fins 20 is parallel to the length direction of the header 30.

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.

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 example 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.

Unless specifically stated 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 invention. 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, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature 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 term "above … …" can include both an orientation of "above … …" and "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 if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Claims

1. A heat exchanger, comprising:

the flat pipe (10), the flat pipe (10) includes the first pipe section (11), bend pipe section (12) and second pipe section (13) that connect sequentially; the number of the flat pipes (10) is multiple, the flat pipes (10) are arranged in an array mode, and a gap is formed between every two adjacent bent pipe sections (12);

the extending direction of the fin (20) is perpendicular to the extending direction of the flat tube (10), the fin (20) is connected with at least one part of the bent tube sections (12) in the plurality of bent tube sections (12), and the fin (20) covers gaps in the plurality of bent tube sections (12).

2. The heat exchanger according to claim 1, wherein the fin (20) comprises a baffle plate (21), a first end plate (22) and a second end plate (23), the first end plate (22) and the second end plate (23) are respectively arranged at two ends of the baffle plate (21), wherein the baffle plate (21) shields one side of the plurality of bent tube sections (12), and the first end plate (22) and the second end plate (23) are connected with two bent tube sections (12) in the plurality of bent tube sections (12) in a one-to-one correspondence manner.

3. The heat exchanger according to claim 2, wherein the fins (20) are plural, and the baffle plate (21) of at least one fin (20) of the plural fins (20) blocks one side of the plural bent tube sections (12), and the baffle plates (21) of the other fins (20) of the plural fins (20) block the other side of the plural bent tube sections (12).

4. The heat exchanger of claim 1,

the fin (20) is provided with a plurality of grooves (24), the grooves (24) are arranged at intervals along the length direction of the fin (20), and at least part of structure of each bent tube section (12) is positioned in one groove (24) in the grooves (24).

5. The heat exchanger according to claim 4, wherein the number of grooves (24) is equal to the number of bend sections (12), and a plurality of bend sections (12) are provided in one-to-one correspondence with a plurality of grooves (24).

6. The heat exchanger according to claim 5, characterized in that the portion of the fin (20) between two adjacent bent tube sections (12) is of an arc-shaped structure, a flat plate structure or a V-shaped structure.

7. The heat exchanger according to claim 4, characterized in that the number of grooves (24) is greater than the number of bend sections (12); between two adjacent bend sections (12), there is at least one said groove (24) which is not engaged with the bend section (12).

8. The heat exchanger according to claim 1, characterized in that the fin (20) comprises a plurality of flaps (25) connected in series, two adjacent flaps (25) being arranged in a V-shaped configuration, one bent section (12) being arranged between two adjacent flaps (25).

9. The heat exchanger according to claim 1, characterized in that the fins (20) are made of aluminum foil.

10. The heat exchanger according to claim 1, characterized in that the fins (20) have a lower potential than the bent tube sections (12).