WO2024001737A1

WO2024001737A1 - Heat exchanger

Info

Publication number: WO2024001737A1
Application number: PCT/CN2023/099641
Authority: WO
Inventors: 史强; 刘玉宝; 金欢; 李艳星; 杨静; 吴伟军
Original assignee: 丹佛斯有限公司; 史强
Priority date: 2022-07-01
Filing date: 2023-06-12
Publication date: 2024-01-04
Also published as: CN218270291U

Abstract

Disclosed in the present invention is a heat exchanger. The heat exchanger comprises: an inlet header pipe for a heat exchange medium to flow into the heat exchanger, the inlet header pipe being provided with a single inlet; and an outlet header pipe for the heat exchange medium to flow out of the heat exchanger, the outlet header pipe being provided with a plurality of header pipe outlets respectively provided on two sides of the central position in a longitudinal direction of the outlet header pipe. According to the heat exchanger in the present invention, the header pipe outlets of the outlet header pipe are respectively provided on the two sides of the central position of the outlet header pipe, so that the pressure drop in heat exchange pipes of the whole heat exchanger is effectively balanced, the distribution of a refrigerant in the heat exchanger is improved, and the performance of the heat exchanger is improved.

Description

Heat Exchanger

Technical field

The invention relates to a heat exchanger.

Background technique

The heat exchanger includes: an inlet header, an outlet header, and a heat exchange tube connected between the inlet header and the outlet header.

Contents of the invention

It is an object of the invention to provide a heat exchanger whereby, for example, the distribution of refrigerant in the heat exchanger can be improved.

Embodiments of the present invention provide a heat exchanger, including: an inlet header for a heat exchange medium to flow into the heat exchanger, the inlet header having a single inlet; and a heat exchange medium for flowing out of the heat exchanger. An outlet header having a plurality of header outlets respectively arranged on both sides of a central position of the outlet header in the longitudinal direction.

According to an embodiment of the present invention, the plurality of header outlets include two header outlets respectively provided at two ends of the outlet header.

According to an embodiment of the present invention, the plurality of header outlets include two header outlets penetrating a pipe wall of the outlet header.

According to an embodiment of the present invention, the distance between each of the two header outlets and the corresponding one of the end surfaces of the two ends of the outlet header is less than or equal to one quarter of the length of the outlet header. one.

According to an embodiment of the present invention, the length of the heat exchanger in the longitudinal direction of the outlet header is L, the heat exchanger has a flat plate shape and the length of the heat exchanger in the longitudinal direction is L. The height in the vertical direction is H, or the heat exchanger is a folded heat exchanger and the height of the heat exchanger in the direction perpendicular to the longitudinal direction before folding is H, and the two sets The distance between each of the flow tube outlets and the corresponding one of the end surfaces of the two ends of the outlet header is less than or equal to L1, where:

According to an embodiment of the present invention, the outlet header includes two end caps respectively closing two ends of the outlet header, and the plurality of header outlets include two ends that respectively penetrate the outlet header. Cover the two header outlets.

According to an embodiment of the present invention, the plurality of header outlets further include two additional headers respectively disposed between two ends of the outlet header and a center position of the outlet header. Pipe outlet.

According to an embodiment of the present invention, the length of the heat exchanger in the longitudinal direction of the outlet header is L, the heat exchanger has a flat plate shape and the length of the heat exchanger in the longitudinal direction is L. The height in the vertical direction is H, or the heat exchanger is a folded heat exchanger and the height of the heat exchanger in the direction perpendicular to the longitudinal direction before folding is H, and the heat exchanger The length L and height H satisfy the following conditions: 1<L/h≤10.

According to an embodiment of the present invention, the heat exchanger further includes: an outlet connecting pipe assembly, the outlet connecting pipe assembly includes: a manifold disposed on one side of both sides of the central position of the outlet manifold. The first branch pipe is connected to the pipe outlet, and the second branch pipe is connected to the header outlet on the other side of the two sides of the central position of the outlet header.

According to an embodiment of the present invention, the outlet connecting pipe assembly further includes: an outlet connecting pipe connected to the first branch pipe and the second branch pipe through a tee in the middle of the longitudinal direction of the outlet header.

According to an embodiment of the present invention, the outlet header includes two end caps respectively closing two ends of the outlet header, and the plurality of header outlets include two ends that respectively penetrate the outlet header. The two header outlets of the cover, the heat exchanger further includes: a heat exchange tube, the two ends of the heat exchange tube are connected and in fluid communication with the inlet header and the outlet header respectively, wherein the first At least one of the branch pipes and the second branch pipe passes through the header outlet in the end cap of the outlet header and is inserted into the outlet header to a predetermined depth such that there is a gap between the end cap and the at least one of the first branch pipe and the second branch pipe. There are multiple ends of heat exchange tubes between the end faces of the end portions.

According to an embodiment of the present invention, the heat exchanger further includes: a single distribution tube arranged in the inlet header, the distribution tube extends along the length direction of the inlet header, and has a single distribution tube arranged in the inlet header. An inlet on one end of the flow tube or provided on the tube wall of the inlet header and a plurality of outlets passing through the tube wall of the distribution tube, the inlet of the distribution tube is connected with the inlet of the inlet header .

According to an embodiment of the present invention, the heat exchanger further includes: a heat exchange tube, two ends of the heat exchange tube are connected and in fluid communication with the inlet header and the outlet header respectively.

According to an embodiment of the present invention, the inlet of the inlet header is provided on one end of the inlet header or on a wall of the inlet header.

Using the heat exchanger according to the embodiment of the present invention, since the header outlets of the outlet header are respectively disposed on both sides of the central position of the outlet header, for example, the refrigerant flow in the heat exchanger can be improved. distribute.

Description of drawings

Figure 1 is a schematic perspective view of a heat exchanger according to an embodiment of the present invention;

Figure 2 is a schematic front view of the heat exchanger shown in Figure 1;

Figure 3 is a schematic front view of the heat exchanger shown in Figure 1, with the inlet header cut away;

Figure 4 is a schematic perspective view of a heat exchanger according to another embodiment of the present invention;

Figure 5 is a schematic front view of the heat exchanger shown in Figure 4;

Figure 6 is a schematic front view of a heat exchanger according to yet another embodiment of the present invention;

Figure 7 is a schematic front view of a heat exchanger according to yet another embodiment of the present invention;

Figure 8 is a schematic perspective view of a heat exchanger according to a further embodiment of the invention;

Figure 9 is a schematic front view of the heat exchanger shown in Figure 8;

Figure 10 is a schematic front view of a heat exchanger according to a modification of the embodiment of the present invention;

Figure 11 is an enlarged cross-sectional view of part A of the heat exchanger shown in Figure 8, showing an example of the arrangement of branch pipes;

Figure 12 is an enlarged cross-sectional view of part A of the heat exchanger shown in Figure 8, showing another example of the arrangement of branch pipes; and

Fig. 13 is a schematic front view of a heat exchanger according to another modification of the embodiment of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1 to 13, a heat exchanger 100 according to an embodiment of the present invention includes: An inlet header 2 for the heat exchange medium to flow into the heat exchanger 100, the inlet header 2 having a single inlet 20; and an outlet header 3 for the heat exchange medium to flow out of the heat exchanger 100, the outlet header 3 The flow tube 3 has a plurality of header outlets 30 respectively provided on both sides of a central position of the outlet header 3 in the longitudinal direction. As shown in FIG. 3 , the inlet 20 of the inlet header 2 may be provided on one end 21 of the inlet header 2 , or may be provided on the tube wall 23 of the inlet header 2 . Referring to FIG. 3 , the heat exchanger 100 may further include: a single distribution tube 5 disposed in the inlet header 2 , the distribution tube 5 extending along the length of the inlet header 2 , for example from the inlet header 2 One end 21 of the inlet header 2 extends to the other end 22 of the inlet header 2 and has a tube wall 23 provided on the one end 21 of the inlet header 2 or at the inlet header 2 There is an inlet 53 on the distribution pipe 5 and a plurality of outlets 55 passing through the pipe wall 50 of the distribution pipe 5 . The inlet 53 of the distribution pipe 5 is connected with the inlet 20 of the inlet header 2 . Therefore, the heat exchange medium enters the inlet 53 of the distribution pipe 5 from the inlet 20 of the inlet header 2 , flows from one end to the other end of the distribution pipe 5 , and flows out from the outlet 55 of the distribution pipe 5 . In the embodiment shown in FIG. 3 , the inlet connecting pipe 56 is integrated with the distribution pipe 5 , and the integrated inlet connecting pipe 56 and the distribution pipe 5 pass through the inlet 20 of the inlet header 2 . The inlet 20 of the inlet header 2 may be provided in the end cap of the inlet header 2 , or may be provided in the tube wall 23 of the inlet header 2 . When the inlet of the inlet header 2 is provided in the tube wall 23 of the inlet header 2 , the inlet connecting pipe 56 can also pass through the inlet in the tube wall 23 of the inlet header 2 to communicate with the distribution pipe 5 . The heat exchanger 100 also includes: heat exchange tubes 7, the two ends 71 of the heat exchange tube 7 are respectively connected and in fluid communication with the inlet header 2 and the outlet header 3; and are alternately arranged with the heat exchange tubes 7 of fins 8.

Referring to FIGS. 1 to 5 and 7 to 13 , in the embodiment of the present invention, the plurality of header outlets 30 include two headers respectively provided at two ends 31 of the outlet header 3 . Manifold outlet 30.

Referring to FIGS. 6 to 9 , in the embodiment of the present invention, the plurality of header outlets 30 include two header outlets 30 that penetrate the wall 33 of the outlet header 3 . The distance between each of the two header outlets 30 and the corresponding one of the end surfaces 38 of the two ends 31 of the outlet header 3 may be less than or equal to one-quarter of the length of the outlet header 3 one. Referring to Figure 6, it is assumed that the heat exchanger 100 is in the longitudinal direction of the outlet header 3 The length is L, and the heat exchanger 100 has a flat shape and the height of the heat exchanger 100 in the direction perpendicular to the longitudinal direction is H, or the heat exchanger 100 is a folded heat exchanger. 100 and the height of the heat exchanger 100 in the direction perpendicular to the longitudinal direction before folding is H, then each of the two header outlets 30 is connected to the two outlet headers 3 The distance between a corresponding one of the end faces 38 of the end portion 31 is less than or equal to L1, where:

Referring to Figures 1 to 5 and 10 to 13, in the embodiment of the present invention, the outlet header 3 includes two end caps 35 that respectively close the two ends 31 of the outlet header 3, so The plurality of header outlets 30 include two header outlets 30 that respectively penetrate two end caps 35 of the outlet header 3 .

Referring to FIGS. 8 and 9 , in addition to the two header outlets 30 respectively provided at the two ends 31 of the outlet header 3 , the plurality of header outlets 30 may also include two header outlets 30 respectively provided at the two ends 31 of the outlet header 3 . Two further header outlets 30 between the two ends 31 of the outlet header 3 and the center position of the outlet header 3 .

Referring to Figure 6, in the embodiment of the present invention, it is assumed that the length of the heat exchanger 100 in the longitudinal direction of the outlet header 3 is L, and the heat exchanger 100 has a flat plate shape and the heat exchanger 100 has a flat plate shape. The height of the heat exchanger 100 in the direction perpendicular to the longitudinal direction is H, or the heat exchanger 100 is a folded heat exchanger 100 (see Figures 4 and 5) and the heat exchanger 100 is at The height in the direction perpendicular to the longitudinal direction is H, then the length L and height H of the heat exchanger 100 satisfy the following conditions:
1＜L/h≤10.

For some elongated-shaped heat exchangers, for example, the ratio L/h is relatively high, especially for heat exchangers with very small pressure drop of the heat exchange medium in the heat exchange tubes. The header outlets are respectively arranged on both sides of the central position of the outlet header, which can especially improve the distribution of refrigerant in the heat exchanger and improve the performance of the heat exchanger.

Referring to Figures 1 to 13, in the embodiment of the present invention, the heat exchanger 100 further includes: an outlet connecting pipe assembly 6. The outlet connecting pipe assembly 6 includes: and is disposed at the center of the outlet header 3 The header outlet 30 on one side of the two sides is connected to the first branch pipe 60, and a second branch pipe 60 connected to the header outlet 30 provided on the other side of both sides of the center position of the outlet header 3. Referring to Figures 1 to 12, the outlet connecting pipe assembly 6 may also include: an outlet connecting pipe connected to the first branch pipe 60 and the second branch pipe 60 through a tee 63 in the middle of the longitudinal direction of the outlet header 3 66.

Referring to FIG. 12 , in the embodiment of the present invention, at least one of the first branch pipe 60 and the second branch pipe 60 passes through the header outlet 30 in the end cover 35 of the outlet header 3 and is inserted into the outlet header 3 for a predetermined time. The depth is such that there are ends 71 of a plurality of heat exchange tubes 7 between the end cover 35 and the end surface 68 of the end 65 of at least one of the first branch pipe 60 and the second branch pipe 60 , for example, the first branch pipe 60 and the second branch pipe 60 . Each of the two branch pipes 60 passes through the header outlet 30 in the end cover 35 of the outlet header 3 and is inserted into the outlet header 3 to a predetermined depth such that there is a gap between the end cover 35 and the first branch pipe 60 and the second branch pipe 60 . There are a plurality of end portions 71 of the heat exchange tubes 7 between the end surfaces 68 of each end portion 65 . The predetermined depth at which the first branch pipe 60 and the second branch pipe 60 are inserted into the outlet header 3 can be set according to the pressure drop distribution of the heat exchange tube, so that the pressure drop distribution of the heat exchange tube can be better adjusted. The pressure in the outlet header near the header outlet 30 is small, and the pressure in the middle part of the outlet header is high. The insertion of the first branch pipe 60 and the second branch pipe 60 into the outlet header 3 to a predetermined depth can balance the pressure in the header. The pressure drop can also play a role in balancing the flow of the heat exchange tube.

Referring to Figure 11, in the embodiment of the present invention, there may not be an end of the heat exchange tube 7 between the end cover 35 and the end surface 68 of the end 65 of each of the first branch pipe 60 and the second branch pipe 60. 71. In this case, it can be considered that the first branch pipe 60 and the second branch pipe 60 are only connected to the end cover 35 of the outlet header 3 .

Referring to FIGS. 1 to 3 and 6 to 13 , in the embodiment of the present invention, the first branch pipe 60 and the second branch pipe 60 can be bent upward or toward the thickness of the heat exchanger 100 as needed. Bend one side in the direction. In the embodiment shown in FIG. 13 , the heat exchanger 100 only has a first branch pipe 60 and a second branch pipe 60 without an outlet connecting pipe 66 . The first branch pipe 60 and the second branch pipe 60 can be directly connected to the pipes in the refrigeration system. road connection.

According to the heat exchanger of the present invention, the header outlets of the outlet header are respectively arranged on both sides of the center position of the outlet header. When the heat exchanger operates as an evaporator, when two header outlets are provided Next, the heat exchange medium is divided into two paths in the outlet header, and the heat exchange medium is discharged from the two ends of the outlet header respectively. This effectively balances the entire heat exchanger The pressure drop in the heat exchange tubes improves the distribution of refrigerant in the heat exchanger and improves the performance of the heat exchanger.

In the heat exchanger according to the present invention, since the header outlets of the outlet header are respectively arranged on both sides of the central position of the outlet header, the pressure drop in the heat exchange tubes of the entire heat exchanger is effectively balanced and the cooling efficiency is improved. distribution of the agent in the heat exchanger and improves the performance of the heat exchanger.

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

Claims

A heat exchanger including:

an inlet header for the flow of heat exchange medium into the heat exchanger, the inlet header having a single inlet; and

An outlet header is used for the heat exchange medium to flow out of the heat exchanger. The outlet header has a plurality of header outlets respectively arranged on both sides of a central position in the longitudinal direction of the outlet header.
The heat exchanger according to claim 1, wherein:

The plurality of header outlets include two header outlets respectively provided at two ends of the outlet header.
The heat exchanger according to claim 1, wherein:

The plurality of header outlets include two header outlets penetrating the wall of the outlet header.
The heat exchanger of claim 3, wherein:

The distance between each of the two header outlets and the corresponding one of the end surfaces of the two ends of the outlet header is less than or equal to one quarter of the length of the outlet header.
The heat exchanger of claim 3, wherein:

The length of the heat exchanger in the longitudinal direction of the outlet header is L,

The heat exchanger has a flat plate shape and a height of the heat exchanger in a direction perpendicular to the longitudinal direction is H, or the heat exchanger is a folded heat exchanger and the heat exchanger is The height of the device in a direction perpendicular to the longitudinal direction is H, and

The distance between each of the two header outlets and the corresponding one of the end surfaces of the two ends of the outlet header is less than or equal to L1, where:
The heat exchanger according to claim 1, wherein:

The outlet header includes two end caps respectively closing two ends of the outlet header, and the plurality of header outlets include two headers that respectively penetrate the two end caps of the outlet header. exit.
The heat exchanger according to any one of claims 2 to 6, wherein:

The plurality of header outlets further includes two additional header outlets respectively disposed between two ends of the outlet header and a center position of the outlet header.
The heat exchanger according to claim 1, wherein:

The length of the heat exchanger in the longitudinal direction of the outlet header is L,

The heat exchanger has a flat plate shape and a height of the heat exchanger in a direction perpendicular to the longitudinal direction is H, or the heat exchanger is a folded heat exchanger and the heat exchanger is The height of the device in a direction perpendicular to the longitudinal direction is H, and

The length L and height H of the heat exchanger meet the following conditions:
1＜L/h≤10.
The heat exchanger according to claim 1, further comprising:

An outlet connecting pipe assembly, the outlet connecting pipe assembly includes: a first branch pipe connected to a header outlet provided on one side of both sides of the central position of the outlet header; The header outlet on the other side of the two sides of the central position of the header is connected to the second branch pipe.
The heat exchanger of claim 9, wherein:

The outlet connecting pipe assembly further includes: an outlet connecting pipe connected to the first branch pipe and the second branch pipe through a tee in the middle of the longitudinal direction of the outlet header.
The heat exchanger of claim 9, wherein:

The outlet header includes two ends respectively closing two ends of the outlet header. Cover, the plurality of header outlets include two header outlets that respectively penetrate two end caps of the outlet header,

The heat exchanger further includes a heat exchange tube. Two ends of the heat exchange tube are respectively connected and in fluid communication with the inlet header and the outlet header, wherein at least one of the first branch pipe and the second branch pipe passes through The header outlet in the end cap of the outlet header is inserted into the outlet header to a predetermined depth such that there are a plurality of exchanges between the end cap and the end surface of the at least one of the first branch pipe and the second branch pipe. The end of the heat pipe.
The heat exchanger according to claim 1, further comprising:

A single distribution tube disposed in the inlet header, the distribution tube extending along the length of the inlet header and having an end portion of the inlet header or disposed on the inlet header An inlet on the wall of the pipe and a plurality of outlets passing through the wall of the distribution pipe, the inlet of the distribution pipe is connected with the inlet of the inlet header.
The heat exchanger according to claim 1, further comprising:

Heat exchange tube, the two ends of the heat exchange tube are connected to the inlet header and the outlet header respectively and are in fluid communication.
The heat exchanger according to claim 1, wherein:

The inlet of the inlet header is disposed on one end of the inlet header or on the wall of the inlet header.