WO2020073744A1

WO2020073744A1 - Pipe assembly and heat exchanger

Info

Publication number: WO2020073744A1
Application number: PCT/CN2019/102229
Authority: WO
Inventors: 彼埃尔·奥利弗·佩尔蒂埃; 张锋
Original assignee: 丹佛斯有限公司; 张锋
Priority date: 2018-10-11
Filing date: 2019-08-23
Publication date: 2020-04-16
Also published as: CN111043894A

Abstract

A pipe assembly for a heat exchanger, and a heat exchanger having same. The pipe assembly comprises: a periphery wall (10), the periphery wall (10) having an inner surface (11) for defining an inner cavity (20); and at least one separator wall (3) for dividing the inner cavity (20) into a plurality of chambers.

Description

Tube assembly and heat exchanger

Cross-reference of related applications

This application requires the rights and interests of the Chinese patent application with the application number 201811187060.3 submitted to the China Patent Office on October 11, 2018. The entire disclosure of this application is incorporated herein by reference.

Technical field

The embodiment of the present invention relates to a tube assembly for a heat exchanger and a heat exchanger having the same.

Background technique

The heat exchanger includes a collector tube and a heat exchange tube.

Summary of the invention

An object of an embodiment of the present invention is to provide a tube assembly for a heat exchanger and a heat exchanger having the heat exchange tube assembly, whereby costs can be reduced, for example.

An embodiment of the present invention provides a tube assembly for a heat exchanger, the tube assembly including: an outer peripheral wall having an inner surface defining an inner cavity; and for dividing the inner cavity into a plurality of chambers At least one partition wall.

According to an embodiment of the invention, the outer peripheral wall has a substantially circular or oval cross-section.

According to an embodiment of the present invention, the at least one partition wall is a partition wall, and the one partition wall includes a first edge portion and a second edge portion extending in a longitudinal direction, and the first edge portion of the one partition wall and The second edge portion is in contact with the inner surface of the outer peripheral wall, and the outer peripheral wall is wound from the second edge portion of the partition wall around the inner cavity in the circumferential direction.

According to an embodiment of the present invention, the at least one partition wall is a plurality of partition walls for partitioning the inner cavity into a plurality of chambers, wherein each partition wall has a first extending in the longitudinal direction The edge portion and the second edge portion, the first edge portion of one of the two adjacent partition walls in the plurality of partition walls is connected to the second edge portion of the other, the first edge portion and the first edge portion of each partition wall The two edge portions are in contact with the inner surface of the outer peripheral wall, and the outer peripheral wall surrounds the inner portion from the second edge portion of the last one of the plurality of partition walls or from the first edge portion of the first one of the plurality of partition walls The cavity is wound in the circumferential direction.

According to an embodiment of the present invention, the at least one partition wall has a wavy shape in the circumferential direction, and the wavy partition wall has a plurality of peak portions adjacent to the inner surface of the outer peripheral wall and away from the inner surface of the outer peripheral wall A plurality of wave trough parts, at least one or all of the plurality of wave crest parts in the plurality of wave crest parts are in contact with the inner surface of the outer peripheral wall.

According to an embodiment of the present invention, the tube assembly for a heat exchanger further includes an inner peripheral wall, and at least one or all of the plurality of valley portions of the plurality of valley portions are in contact with the outer surface of the inner peripheral wall.

According to an embodiment of the present invention, at least two or all of the plurality of valley parts are connected.

According to an embodiment of the present invention, the wavy-shaped partition wall has an intermediate portion between the peak portion and the valley portion, and the two intermediate portions connected to the same valley portion are connected to each other.

According to an embodiment of the present invention, the outer peripheral wall and the partition wall are formed by bending one or more plates.

According to an embodiment of the present invention, the outer peripheral wall, the partition wall, and the inner peripheral wall are formed by bending one or more plates.

According to an embodiment of the present invention, the plurality of chambers are spiral from one end of the tube assembly to the other end.

According to an embodiment of the present invention, the tube assembly for a heat exchanger further includes: heat exchange fins, the heat exchange fins have a wavy shape in the circumferential direction, and the wavy heat exchange fins have an outer portion adjacent to the outer peripheral wall A plurality of valley portions of the surface, at least one or all of the plurality of valley portions of the plurality of valley portions are in contact with the outer surface of the peripheral wall.

According to an embodiment of the present invention, the partition wall has a through hole, and at least two of the plurality of chambers communicate through the through hole.

According to an embodiment of the present invention, the inner peripheral wall has a substantially circular or oval cross-section.

According to an embodiment of the present invention, at least one edge portion of the one plate or the plurality of plates extending in the longitudinal direction overlaps with other portions of the one plate or the plurality of plates in the thickness direction of the outer peripheral wall and is connected together.

According to an embodiment of the present invention, the wavy partition wall has a first joining surface extending in the longitudinal direction and a second joining surface extending in the longitudinal direction in the circumferential direction; and the first joining surface and the second joining surface Contact and connect with each other.

According to an embodiment of the present invention, the wavy-shaped partition wall includes: a first group of wavy-shaped partition walls, the first group of wavy-shaped partition walls having two of the first in the circumferential direction extending in the longitudinal direction A joining surface; and a second group of undulating partition walls, the second group of undulating partition walls having two of the second joining surfaces extending in the longitudinal direction in the circumferential direction; and a first group of undulating partition walls The two first joint surfaces of the two and the two second joint surfaces of the partition wall of the second group of corrugated shapes are in contact with each other and connected.

According to an embodiment of the present invention, at least one of the outer peripheral wall and the inner peripheral wall has a substantially circular cross-section; and the first and second joining surfaces are opposite to those of the outer peripheral wall and the inner peripheral wall The radial direction of the at least one is inclined.

According to an embodiment of the present invention, the first joint surface and the second joint surface have complementary curved shapes in a plane perpendicular to the axial direction of the pipe assembly.

According to an embodiment of the present invention, the first joint surface and the second joint surface have complementary L- or S-shaped shapes in a plane perpendicular to the axial direction of the pipe assembly.

According to an embodiment of the present invention, the tube assembly is a heat exchange tube or a header tube.

An embodiment of the present invention also provides a heat exchanger, including the above-mentioned tube assembly.

The tube assembly for a heat exchanger and the heat exchanger having the heat exchange tube assembly according to the embodiments of the present invention can reduce costs, for example.

BRIEF DESCRIPTION

1 is a schematic perspective view of a tube assembly for a heat exchanger according to a first embodiment of the present invention;

2 is a schematic perspective view of a tube assembly for a heat exchanger according to a second embodiment of the present invention;

3 is a schematic perspective view of a tube assembly for a heat exchanger according to a third embodiment of the present invention;

4 is a schematic perspective view of a tube assembly for a heat exchanger according to a fourth embodiment of the present invention;

5 is a schematic perspective view of a tube assembly for a heat exchanger according to a fifth embodiment of the present invention;

6 is a schematic perspective view of a tube assembly for a heat exchanger according to a sixth embodiment of the present invention;

7 is a schematic perspective view of a tube assembly for a heat exchanger according to a seventh embodiment of the present invention;

8 is a schematic perspective view of a tube assembly for a heat exchanger according to an eighth embodiment of the present invention;

9 is a schematic perspective view of a tube assembly for a heat exchanger according to a ninth embodiment of the present invention; and

10 is a schematic perspective view of a tube assembly for a heat exchanger according to a tenth embodiment of the present invention.

detailed description

The present invention will be further described below with reference to the drawings and specific embodiments.

1 to 10, a heat exchanger according to an embodiment of the present invention includes a tube assembly 1 and a fin, the fin has a fin hole, and the tube assembly 1 is inserted into the fin hole; or heat exchange according to an embodiment of the present invention The device includes a tube assembly 1; fins, the fins have fin holes, and the heat exchange tubes are inserted into the fin holes, and the tube assembly 1 is connected to the end of the heat exchange tubes and is in fluid communication with the heat exchange tubes .

Referring to FIGS. 1 to 10, a tube assembly 1 for a heat exchanger according to an embodiment of the present invention includes: an outer peripheral wall 10 having an inner surface 11 defining an inner cavity 20; and at least one partition wall 3, so The at least one partition wall 3 is used to partition the inner cavity 20 into a plurality of chambers. The cross-sections of the multiple chambers can be different or the same. The tube assembly 1 may be a heat exchange tube or a collector tube. The tube assembly 1 may be formed by bending plates or sheets. The tube assembly 1 formed by bending a plate or sheet can pass through at least two layers of plates or sheets from the innermost to the outer side of the tube assembly 1. The outermost layer of the tube assembly 1 may form a closed space, and at least a part of the outermost layer and the layer adjacent to the outermost layer are in contact. At least a part of every two adjacent layers are in contact. After welding, every two adjacent layers are at least partially connected together. The peripheral wall 10 may have a substantially circular or oval cross-section.

Referring to FIG. 1, in some embodiments of the present invention, the outer peripheral wall 10 is formed by winding at least two layers of plates around the inner cavity 20 in the circumferential direction. For example, a sheet is wound with at least two layers, and the edge of the outermost layer extending in the longitudinal direction and the edge of the innermost layer extending in the longitudinal direction overlap in the thickness direction of the peripheral wall 10 to enhance the strength of the tube assembly 1 .

According to an example of the present invention, as shown in FIG. 1, the partition wall 3 includes a first edge portion 31 and a second edge portion 32 extending in the longitudinal direction, and the first edge portion 31 and the second edge portion 32 of the partition wall 3 are The inner surface 11 of the outer peripheral wall 10 is in contact, and the outer peripheral wall 10 is wound from the second edge portion 32 of the partition wall 3 around the inner cavity 20 in the circumferential direction.

Referring to FIG. 2, according to another example of the present invention, the tube assembly 1 includes a plurality of partition walls 3 for partitioning the inner cavity 20 into a plurality of chambers, each partition wall 3 having a longitudinal direction The first edge portion 31 and the second edge portion 32 extending in the direction, the first edge portion 31 of one of the two adjacent partition walls 3 in the plurality of partition walls 3 is connected to the second edge portion 32 of the other, The first edge portion 31 and the second edge portion 32 of each partition wall 3 are in contact with the inner surface of the outer peripheral wall 10 from the second edge portion 32 of the last one of the plurality of partition walls 3 Or the first edge portion 31 of the first of the plurality of partition walls 3 is wound around the inner cavity in the circumferential direction. One of the two partition walls 3 in FIG. 2 may be the first partition wall 3, and the other may be the last partition wall 3. In the case where the number of partition walls 3 is more than three, except for the first The partition wall 3 other than the partition wall 3 and the last partition wall 3 is located between the first partition wall 3 and the last partition wall 3.

According to an embodiment of the present invention, as shown in FIGS. 3 to 10, the partition wall 3 has a wavy shape in the circumferential direction, and the wavy partition wall 3 has a plurality of peak portions 33 adjacent to the inner surface 11 of the outer peripheral wall 10 and A plurality of wave trough portions 34 away from the inner surface 11 of the outer peripheral wall 10, at least one or all of the plurality of wave crest portions 33 among the plurality of wave crest portions 33 are in contact with the inner surface 11 of the outer wall 10. Thus, the outer peripheral wall 10 and the partition wall 3 form a plurality of independent chambers. Each chamber is adjacent to at least two other chambers. The three sides of the multiple independent chambers exchange heat with the refrigerant, and at least half of the area exchanges heat with the refrigerant. In the embodiment shown in FIG. 3, the edge of the partition wall 3 extending in the longitudinal direction and the two edges of the peripheral wall 10 extending in the longitudinal direction overlap in the thickness direction of the peripheral wall 10 to strengthen the strength of the tube assembly 1 .

According to an example of the present invention, as shown in FIGS. 4 and 7 to 10, the tube assembly 1 further includes: an inner peripheral wall 5, at least one or all of the plurality of valley portions 34 and the inner peripheral wall 5 The outer surface 51 meets. Thus, the outer peripheral wall 10, the inner peripheral wall 5 and the partition wall 3 form a plurality of independent chambers, each chamber is adjacent to at least three other chambers, and the inner peripheral wall 5 may have a substantially circular or elliptical shape Cross section.

According to another example of the present invention, as shown in FIGS. 5 and 6, at least two or all of the plurality of valley parts 34 are connected. After welding, at least part of the trough part 34 is connected together. For example, as shown in FIG. 6, the wave-shaped partition wall 3 has an intermediate portion 35 between the crest portion 33 and the trough portion 34, and two intermediate portions 35 connected to the same trough portion 34 are in contact with each other.

1 to 10, in some embodiments of the present invention, the outer peripheral wall 10 and the partition wall 3 are formed by bending one or more plates, or the outer peripheral wall 10, the partition wall 3, and the inner peripheral wall 5 are formed by One plate or multiple plates are formed by bending. In some embodiments of the present invention, at least one edge portion of the one or more plates extending in the longitudinal direction overlaps with other portions of the one or more plates in the thickness direction of the outer peripheral wall and is connected to Together to strengthen the strength of the tube assembly 1.

Referring to FIG. 6, according to an embodiment of the present invention, a plurality of chambers are spiral from one end of the tube assembly 1 to the other end. The tube assembly 1 can be twisted or twisted in the process of bending, or after bending, so as to enhance turbulence and heat exchange; at the same time, there are multiple chambers in the tube assembly 1, there are Is on the windward side, then the heat exchange between the refrigerant and the air side in the chamber on this side is better, and there is a chamber on the leeward side, so the heat exchange is not good. After being twisted, the position of the chamber on the leeward side and the position on the windward side can be reversed, so that the heat exchange with the air side is better and more uniform.

Referring to FIG. 6, according to an embodiment of the present invention, the tube assembly 1 further includes: heat exchange fins 6. The heat exchange fins 6 have a wavy shape in the circumferential direction, and the wavy heat exchange fins 6 have an outer portion adjacent to the peripheral wall 10 The plurality of valley portions 64 on the surface, at least one or all of the plurality of valley portions 64 are in contact with the outer surface 12 of the peripheral wall 10. The heat exchange fins 6 can be used as fins to exchange heat with air.

Referring to FIGS. 1 to 10, in some embodiments of the present invention, the partition wall 3 has a through hole through which at least two of the plurality of chambers communicate.

8 to 10, in some embodiments of the present invention, the wavy partition wall 3 has a first joint surface 36 extending in the longitudinal direction and a second joint surface 37 extending in the longitudinal direction in the circumferential direction ; And the first joint surface 36 and the second joint surface 37 are in contact with each other and connected. For example, referring to FIGS. 8 and 9, the wave-shaped partition wall 3 includes: a first group of wave-shaped partition walls 3, and the first group of wave-shaped partition walls 3 has two extending in the longitudinal direction in the circumferential direction The first joint surface 36; and a second group of undulating partition walls 3, the second group of undulating partition walls 3 has two of the second joint surfaces 37 extending in the longitudinal direction in the circumferential direction; And the two first joining surfaces 36 of the first group of undulating partition walls 3 and the two second joining surfaces 37 of the second group of undulating partition walls 3 are in contact with each other and connected.

Referring to FIG. 8, in some embodiments of the present invention, at least one of the outer peripheral wall 10 and the inner peripheral wall 5 has a substantially circular cross-section; and the first joining surface 36 and the second joining surface 37 are relative to The at least one of the outer peripheral wall 10 and the inner peripheral wall 5 is inclined in the radial direction. According to an embodiment of the present invention, the first joining surface 36 and the second joining surface 37 may have complementary curved shapes in a plane perpendicular to the axial direction of the tube assembly 1. For example, the first joining surface 36 and the second joining surface 37 have complementary L- or S-shaped shapes in a plane perpendicular to the axial direction of the tube assembly 1. As a result, the contact surface between the first bonding surface 36 and the second bonding surface 37 is increased, the strength after welding is large, and leakage is not likely to occur.

In the embodiment shown in FIG. 10, the outer peripheral wall 10 and the inner peripheral wall 5 are directly connected, for example, the outer peripheral wall 10 and the inner peripheral wall 5 are formed by bending one plate, or the outer peripheral wall 10 The partition wall 3 and the inner peripheral wall 5 are formed by bending one plate.

The plate or sheet used in the tube assembly 1 may be several independent pieces, such as one for each layer and one for fins. The thickness and material of the board or sheet can be different. The tube assembly 1 can be processed with grooves or holes for collecting pipes. The number of chambers can be from 1 to 20. The outermost layer of the tube assembly 1 is in contact with the fins.

The steps of using the tube assembly 1 to form a heat exchanger include: inserting the tube assembly 1 into the fin hole of the multi-layer fin; expanding the tube assembly 1 to bring the tube assembly 1 into fin hole flanging contact; and placing the fin Welded together with the tube assembly 1.

With the tube assembly 1 according to the embodiment of the present invention, the cost can be reduced because the price of the tube formed by bending can be relatively low. In addition, the heat exchange efficiency can be improved because the micro-channel structure is formed by bending, thereby increasing the heat exchange area and increasing the heat exchange amount. In addition, the corrosion resistance can be improved, because the material used for the bending pipe can be added with a composite layer both inside and outside, and the pipe can be resistant to corrosion both inside and outside.

Although the above embodiments are described, some features of the above embodiments can be combined to form new embodiments.

Claims

A tube assembly for a heat exchanger, including:

An outer peripheral wall having an inner surface defining an inner cavity; and

At least one partition wall for partitioning the inner cavity into a plurality of chambers.
The tube assembly for a heat exchanger according to claim 1, wherein:

The outer peripheral wall has a substantially circular or oval cross-section.
The tube assembly for a heat exchanger according to claim 1, wherein:

The at least one partition wall is a partition wall including a first edge portion and a second edge portion extending in the longitudinal direction, and the first edge portion and the second edge portion of the one partition wall are The inner surfaces of the outer peripheral walls meet, and the outer peripheral walls are wound around the inner cavity in the circumferential direction from the second edge portion of the partition wall.
The tube assembly for a heat exchanger according to claim 1, wherein:

The at least one partition wall is a plurality of partition walls for partitioning the inner cavity into a plurality of chambers, wherein each partition wall has a first edge portion and a second edge portion extending in the longitudinal direction , The first edge portion of one of the two adjacent partition walls in the plurality of partition walls is connected to the second edge portion of the other, the first edge portion and the second edge portion of each partition wall are connected to the outer periphery The inner surfaces of the walls meet, and the peripheral wall is wound around the inner cavity in the circumferential direction from the second edge portion of the last one of the plurality of partition walls or from the first edge portion of the first one of the plurality of partition walls .
The tube assembly for a heat exchanger according to claim 1, wherein:

The at least one partition wall has a wavy shape in the circumferential direction, and the wavy partition wall has a plurality of wave crest portions adjacent to the inner surface of the outer peripheral wall and a plurality of wave trough portions away from the inner surface of the outer peripheral wall, a plurality of At least one or all of the plurality of peak portions in the peak portion are in contact with the inner surface of the outer peripheral wall.
The tube assembly for a heat exchanger according to claim 5, further comprising:

In the inner peripheral wall, at least one or all of the plurality of valley portions of the plurality of valley portions are in contact with the outer surface of the inner peripheral wall.
The tube assembly for a heat exchanger according to claim 5, wherein:

At least two or all of the plurality of valley parts are connected.
The tube assembly for a heat exchanger according to claim 5 or 7, wherein:

The wave-shaped partition wall has an intermediate portion between the peak portion and the valley portion, and the two intermediate portions connected to the same valley portion are in contact with each other.
The tube assembly for a heat exchanger according to claim 1, wherein:

The outer peripheral wall and at least one partition wall are formed by bending one or more plates.
The tube assembly for a heat exchanger according to claim 6, wherein:

The outer peripheral wall, at least one partition wall and the inner peripheral wall are formed by bending one or more plates.
The tube assembly for a heat exchanger according to claim 1, wherein:

The multiple chambers are spiral from one end of the tube assembly to the other.
The tube assembly for a heat exchanger according to claim 1, further comprising:

A heat exchange plate, the heat exchange plate has a corrugated shape along the circumferential direction, the corrugated heat exchange plate has a plurality of valley portions adjacent to the outer surface of the outer peripheral wall, at least one or all of the plurality of valley portions in the plurality of valley portions It is in contact with the outer surface of the outer peripheral wall.
The tube assembly for a heat exchanger according to claim 1, wherein:

The partition wall has a through hole through which at least two of the plurality of chambers communicate.
The tube assembly for a heat exchanger according to claim 6, wherein:

The inner peripheral wall has a substantially circular or oval cross-section.
The tube assembly for a heat exchanger according to claim 9 or 10, wherein:

At least one edge portion of the one plate or the plurality of plates extending in the longitudinal direction overlaps with other portions of the one plate or the plurality of plates in the thickness direction of the outer peripheral wall and is connected together.
The tube assembly for a heat exchanger according to claim 6, wherein:

The wavy-shaped partition wall has a first joining surface extending in the longitudinal direction and a second joining surface extending in the longitudinal direction in the circumferential direction; and

The first joining surface and the second joining surface are in contact with each other and connected.
The tube assembly for a heat exchanger according to claim 16, wherein:

The wave-shaped partition wall includes: a first group of wave-shaped partition walls, the first group of wave-shaped partition walls having two of the first joint surfaces extending in the longitudinal direction in the circumferential direction; and a second group A wavy-shaped partition wall, the second group of wavy-shaped partition walls has two of the second joint surfaces extending in the longitudinal direction in the circumferential direction; and

The two first joint surfaces of the first group of undulating partition walls and the two second joint surfaces of the second group of undulating partition walls are in contact with each other and connected.
The tube assembly for a heat exchanger according to claim 16 or 17, wherein:

At least one of the outer peripheral wall and the inner peripheral wall has a substantially circular cross-section; and

The first joining surface and the second joining surface are inclined with respect to the radial direction of the at least one of the outer peripheral wall and the inner peripheral wall.
The tube assembly for a heat exchanger according to claim 16 or 17, wherein:

The first joint surface and the second joint surface have complementary curved shapes in a plane perpendicular to the axial direction of the tube assembly.
The tube assembly for a heat exchanger according to claim 16 or 17, wherein:

The first joining surface and the second joining surface have complementary L- or S-shaped shapes in a plane perpendicular to the axial direction of the tube assembly.
The tube assembly for a heat exchanger according to claim 1, wherein:

The tube assembly is a heat exchange tube or a collector tube.
A heat exchanger, including:

The tube assembly of claim 1.