WO2024051712A1

WO2024051712A1 - Heat exchanger

Info

Publication number: WO2024051712A1
Application number: PCT/CN2023/117125
Authority: WO
Inventors: 丁二刚; 夏纯武
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2022-09-09
Filing date: 2023-09-06
Publication date: 2024-03-14
Also published as: CN218583473U

Abstract

A heat exchanger (100), comprising a first collecting pipe (10) and a distributing pipe (40). The distributing pipe (40) comprises an elbow portion (41) used for introducing a refrigerant, the elbow portion (41) extends out of the first collecting pipe (10), and in a direction perpendicular to the axis of the first collecting pipe (10), the projection of the elbow portion (41) is located on the first collecting pipe (10); the first collecting pipe (10) comprises a positioning portion (11), and the positioning portion (11) works in conjunction with the elbow portion (41) so as to lock the distributing pipe (40) to the first collecting pipe (10).

Description

Heat Exchanger

Related applications

This application claims priority to the Chinese patent application filed on September 9, 2022, with the application number 202222414865.5 and the invention name "Heat Exchanger", the entire content of which is incorporated into this application by reference.

Technical field

The present application belongs to the technical field related to heat exchange, and in particular relates to a heat exchanger.

Background technique

The heat exchanger is mainly composed of heat exchange tubes, cooling fins and header tubes. The header tubes are set at both ends of the heat exchange tube to distribute and collect the refrigerant. In order to ensure that the refrigerant in the heat exchanger is evenly distributed in each heat exchange tube, a distribution tube is generally inserted into the header tube, and the distribution tube is used to evenly distribute the refrigerant into each heat exchange tube.

At present, in traditional heat exchangers, the distribution tube usually extends outward from the end of the header, so that the bent tube portion of the distribution tube is exposed outside the header. In this way, during the transportation and installation of the heat exchanger, the bent pipe portion of the distribution pipe exposed outside the header is easily damaged.

Contents of the invention

In view of this, it is necessary to provide a heat exchanger.

A heat exchanger includes a first header and a distribution tube. The distribution tube is partially inserted into the first header along the axial direction of the first header.

The distribution pipe has an elbow portion for introducing refrigerant. The elbow portion extends out of the first header and is arranged along an axis perpendicular to the first header. The projection of the tube part is arranged on the first header; wherein the first header has a positioning part, and the positioning part is connected to the first header. The elbow portion cooperates to lock the distribution tube to the first header.

In one of the embodiments, the positioning part is configured as a positioning groove provided on the first header, and the branch part is connected by snap-fitting between the elbow part and the positioning groove. The piping is locked to the first header.

In one embodiment, the positioning groove includes a first groove part and a second groove part, and the second groove part is connected to the first groove part; the distribution pipe can drive the elbow part along the The direction of the first groove portion is inserted into the first header, and is locked to the first header through snap fit between the second groove portion and the elbow portion.

In one embodiment, the depth direction of the second groove portion is perpendicular to the depth direction of the first groove portion.

In one embodiment, the positioning groove is configured in a V-shaped structure, and the distribution pipe can drive the elbow portion to snap into the bottom of the positioning groove.

In one embodiment, the groove bottom of the positioning groove is configured as an arc surface to match the pipe wall of the elbow portion.

In one embodiment, a cover plate is installed in the first header, and the distribution pipe passes through the cover plate and extends into the first header; wherein the distribution pipe and A seal is installed between the cover plates, so that an independent chamber is formed between the cover plates and the first header.

In one embodiment, a buffer member is filled between the first header pipe and the distribution pipe, wherein the buffer member is disposed outside the independent chamber.

In one embodiment, the buffer member is made of pearl cotton.

In one of the embodiments, a second header and a plurality of heat exchange tubes are further included. The plurality of heat exchange tubes are disposed between the first header and the second header, and are respectively Communicated with the distribution pipe and the second header pipe.

In one embodiment, the distance between the nozzle of the heat exchange tube and the distribution tube is defined as N, 2mm≤N≤3mm.

In one embodiment, the inner diameter of the distribution pipe is defined as D1, and D1>5 mm.

In one embodiment, the outer diameter of the distribution pipe is defined as OD1, and the inner diameter of the first header is defined as D2, 0.2*D2<OD1<0.5*D2.

In one embodiment, the distance between the inner wall of the first header pipe relatively close to the heat exchange tube and the distribution pipe is defined as H, and the distance between the inner wall of the first header pipe relatively far away from the heat exchange tube is defined as H. The distance between the inner wall and the distribution pipe is h, and the inner diameter of the distribution pipe is defined as OD1, where h+OD1<H.

In one embodiment, the bending radius of the elbow portion is defined as R, and the distance between the inner wall of the first header relatively close to the heat exchange tube and the distribution tube is defined as H, R<H .

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the application will become apparent from the description, drawings and claims.

Description of the drawings

To better describe and illustrate embodiments and/or examples of those inventions disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the drawings should not be construed as limiting the scope of any of the disclosed inventions, the embodiments and/or examples presently described, and the best modes currently understood of these inventions.

Figure 1 is a schematic structural diagram of a heat exchanger provided by one embodiment of the present application.

Figure 2 is an enlarged view of part P in Figure 1.

Figure 3 is a schematic structural diagram of a heat exchanger provided by one embodiment of the present application.

Figure 4 is an enlarged view of part Q in Figure 3.

Figure 5 is a schematic structural diagram of a heat exchanger provided by one embodiment of the present application.

Figure 6 is an enlarged view of part R in Figure 5.

Figure 7 is a partial structural diagram of a heat exchanger provided by one embodiment of the present application.

Reference signs, 100, heat exchanger; 10, first header; 11, positioning portion; 111, positioning groove; 1111, first groove portion; 1112, second groove portion; 1110, groove bottom; 12. seal Cover plate; 20. Second header; 30. Heat exchange tube; 31. Pipe mouth; 40. Distribution tube; 41. Elbow part; 50. Radiation fins; 60. Buffer; 61. Pearl cotton; 101 , independent chamber.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that when an element is referred to as being "disposed on" another element, it can be directly located on the other element or intervening elements may also be present. When an element is said to be "disposed on" another element, it can be directly located on the other element or intervening elements may also be present. When an element is said to be "fixed to" another element, it can be directly attached to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIGS. 1 and 2 , the heat exchanger 100 provided in the first embodiment of the present application includes a first header 10 , a second header 20 , a plurality of heat exchange tubes 30 and a distribution tube 40 .

The distribution pipe 40 is installed on the first header 10 , and a plurality of heat exchange tubes 30 are arranged between the first header 10 and the second header 20 , and are connected to the distribution pipe 40 and the second header 20 respectively. connected, so that when the heat exchanger 100 is working, the refrigerant is evenly introduced into the heat exchange tube 30 under the distribution of the distribution tube 40, and then flows from the heat exchange tube 30 to the second header 20, using the refrigerant path to exchange During the process of heat pipe 30, heat exchange is achieved with the external environment. It should be noted that the specific structure of the distribution pipe 40 and the working principle of how to distribute the refrigerant are conventional technologies in the traditional heat exchanger 100, and will not be elaborated here. Of course, in order to improve the performance of the heat exchanger To improve the heat exchange effect when 100 is working, the heat dissipation fins 50 can also be installed on the heat exchange tube 30, which will not be elaborated here.

In this embodiment, the distribution pipe 40 has an elbow portion 41 for introducing refrigerant, and the elbow portion 41 extends out of the first header 10 ; along the axis direction perpendicular to the first header 10 , the elbow portion 41 The projection of is located on the first header 10 . In other words, the end of the first header 10 in this embodiment adjacent to the elbow portion 41 is disposed outside the distribution pipe 40, so that during the transportation and installation of the heat exchanger 100, the first header 10 can It plays a protective role on the distribution pipe 40 to prevent the distribution pipe 40 from being damaged. It should be noted that the axial length of the portion of the first header pipe 10 extending beyond the elbow portion 41 of the distribution pipe 40 can be specifically set according to usage requirements, and will not be elaborated here.

The first header 10 is provided with a positioning portion 11 , and the positioning portion 11 can act on the distribution tube 40 to lock the distribution tube 40 to the first header 10 . In other words, the orientation of the distribution pipe 40 when assembled on the first header 10 can be fixed through the cooperation between the positioning portion 11 and the distribution pipe 40 , that is, the installation position of the distribution pipe 40 on the first header 10 can be fixed. Positioning is performed to facilitate assembly and communication between the distribution tube 40 and the plurality of heat exchange tubes 30.

The positioning portion 11 of this embodiment is configured as a positioning groove 111 provided on the first header 10 . The distribution pipe 40 can be locked to the first header 10 through the engagement between the elbow portion 41 and the positioning groove 111 . , and then specifically implement the structural arrangement of the positioning part 11 on the first header 10 to avoid the use of external positioning The tooling positions the direction in which the distribution pipe 40 is assembled on the first header 10, thereby simplifying the structure and reducing costs.

For example, the positioning groove 111 includes a first groove part 1111 and a second groove part 1112. The first groove part 1111 is connected to the second groove part 1112. The distribution pipe 40 can drive the elbow part 41 along the direction of the first groove part 1111. It is snapped into the first header 10 and locked to the first header 10 through snap fit between the second groove portion 1112 and the elbow portion 41 . In other words, when the distribution pipe 40 is installed on the first header 10 , the bend portion 41 of the distribution pipe 40 can be inserted along the first groove portion 1111 and then turned to the second groove portion 1112 , using the second groove portion 1112 and the bend. The snap fit between the tube portions 41 performs positioning. It should be noted that the groove widths of the first groove portion 1111 and the second groove portion 1112 are specifically adapted to the outer diameter of the distribution pipe 40 .

The positioning groove 111 in this embodiment is configured as an L-shaped structure. In other words, the included angle formed between the first groove portion 1111 and the second groove portion 1112 on the positioning groove 111 is 90°, thereby specifically realizing the structure of the positioning groove 111 The arrangement has a simplified structure and facilitates the installation of the distribution pipe 40 into the second groove portion 1112 of the positioning groove 111 . It should be noted that the first groove portion 1111 on the positioning groove 111 of the present application is provided along the axial direction of the distribution pipe 40, which can facilitate the insertion of the elbow portion 41 of the distribution pipe 40 into the first groove portion 1111, and improve the The second groove portion 1112 locks the distribution pipe 40 with stability when snap-fitting with the elbow portion 41 . Of course, the angle between the first groove portion 1111 and the second groove portion 1112 is not limited to 90°. For those skilled in the art, the first groove portion 1111 and the second groove portion 1112 can be specifically set according to the needs of use. The angle between them will not be elaborated here.

In addition, it should be noted that a cover plate 12 is installed in the first header 10 of the present application, and the distribution pipe 40 passes through the cover plate 12 and extends into the first header 10; wherein, the distribution pipe 40 It is sealed and assembled with the cover plate 12 so that the cover plate 12 and the first header 10 form an independent chamber 101 to meet the requirement of refrigerant circulation when the heat exchanger 100 is working.

As shown in FIGS. 5 and 6 , the inner diameter dimension of the distribution pipe 40 is defined as D1. If the inner diameter of the distribution tube 40 is too small, the liquid dispensing resistance will be too large. Therefore, in order to facilitate liquid dispensing, in this embodiment, D1>5mm. Such an arrangement facilitates liquid circulation and facilitates the liquid dispensing tube to dispense liquid quickly and evenly.

It can be understood that in other embodiments, the inner diameter of D1 is not limited, and D1 can also be less than or equal to 5 mm, as long as it does not affect the normal dispensing of liquid by the dispensing tube.

As shown in FIG. 6 , the outer diameter of the distribution pipe 40 is defined as OD1 and the inner diameter of the first header 10 is defined as D2. If the outer diameter of the distribution pipe 40 is too large, it will be difficult to assemble the distribution pipe 40 into the first header 10 . Therefore, in order to facilitate the insertion and assembly of the distribution pipe 40 and the first header 10 , in this embodiment, 0.2 *D2＜OD1＜0.5*D2. It can be understood that as long as the distribution pipe 40 can finally be inserted and assembled into the first header 10, in other embodiments, the size relationship between OD1 and D2 can also be adjusted adaptively, for example, OD1=0.5*D2, or OD1=0.2*D2, etc., which will not be listed and described in detail here.

As shown in FIG. 6 , the distance between the inner wall of the first header 10 relatively close to the heat exchange tube 30 and the distribution tube 40 is defined as H, and the distance between the inner wall of the first header 10 relatively far away from the heat exchange tube 30 and the distribution tube 40 is defined as H. The distance is h, and the inner diameter of the distribution pipe 40 is defined as OD1, where h+OD1<H. In this way, sufficient installation space can be provided for the elbow portion 41 of the distribution pipe 40 .

As shown in FIG. 6 , the bending radius of the elbow portion 41 is defined as R, and the distance between the inner wall of the first header 10 relatively close to the heat exchange tube 30 and the distribution tube 40 is defined as H. In order to ensure that the elbow part 41 can smoothly enter the first header 10, R<H, and the two straight sections of the distribution pipe 40 close to the elbow part 41 are installed with the first header 10 and the cover plate 12 respectively. Cooperation facilitates the installation and positioning of the distribution pipe 40.

Please refer to Figure 7. Further, in order to enable the distribution pipe 40 to distribute liquid more evenly, in one embodiment, the distance between the nozzle 31 of the heat exchange pipe 30 and the distribution pipe 40 is defined as N, 2mm. ≤N≤3mm. Such an arrangement can facilitate the distribution pipe 40 to evenly distribute the refrigerant to different exchangers. Inside the heat pipe 30.

In other words, the distribution pipe 40 is generally provided with a plurality of distribution holes, and the nozzle 31 of the heat exchange tube 30 can be inserted into the heat exchange tube 30 through the distribution holes; it can also be located in the first header 10 and between the distribution pipe 40 have a certain distance.

Specifically, as shown in FIG. 6 , when the tube opening 31 of the heat exchange tube 30 is inserted into the heat exchange tube 30 through the distribution hole, the refrigerant in the distribution tube 40 can be directly distributed from the distribution tube 40 to each heat exchange tube 30 . As shown in FIG. 7 , when the tube opening 31 of the heat exchange tube 30 is located in the first header 10 and is a certain distance N away from the distribution tube 40 , the refrigerant in the distribution tube 40 can overflow from the distribution hole to After the first header pipe 10, it is then distributed to each heat exchange tube 30.

As shown in Figures 3 and 4, the structural composition and working principle of the heat exchanger 100 provided by the second embodiment of the present application are basically the same as the heat exchanger 100 of the first embodiment of the present application. The difference between the two is: The positioning groove 111 is set in a V-shaped structure, and the distribution pipe 40 can drive the elbow portion 41 to snap into the groove bottom 1110 of the positioning groove 111 , so that the heat exchanger 100 of this embodiment can assemble the distribution pipe 40 to the first header 10 When assembling, the V-shaped structure has a large opening diameter, which can effectively avoid problems such as collision and damage caused by the inner wall of the positioning groove 111 to the outer wall of the distribution pipe 40 during the process of assembling the distribution pipe 40 to the positioning groove 111, and is convenient. The distribution pipe 40 is clamped into the positioning groove 111 .

Among them, the groove bottom 1110 of the positioning groove 111 is configured as an arc surface to match the pipe wall of the elbow part 41. This can improve the fit between the groove bottom 1110 of the positioning groove 111 when holding the elbow part 41. degree, further improving the assembly stability of the elbow portion 41 on the groove bottom 1110 of the positioning groove 111 .

As shown in Figures 5 and 6, the heat exchanger 100 provided in the third embodiment of the present application and the heat exchanger 100 provided in the second embodiment of the present application are basically the same in structural composition and working principle. The difference between the two is: The buffer member 60 is filled between the first header 10 and the distribution pipe 40 of the embodiment. The buffer member 60 is arranged outside the independent chamber 101, so that when the heat exchanger 100 of this embodiment is working, the buffer member 60 is used. The structural characteristics of the component 60 can have a shock-absorbing effect on the assembly of the distribution pipe 40 between the first header 10, thereby ensuring the stability of the assembly between the distribution pipe 40 and the cover plate 12, which can achieve To prevent the refrigerant in the independent chamber 101 from leaking.

Illustratively, the buffer member 60 in this embodiment is configured as pearl cotton 61, so as to realize an embodiment of the buffer member 60, so that when the distribution pipe 40 and the first header 10 are assembled, the pearl cotton can be first The cotton 61 is put on the distribution pipe 40, and then the distribution pipe 40 is inserted into the first header 10.

In summary, the heat exchanger 100 of the present application disposes the end of the first header 10 outside the distribution pipe 40, so that during the transportation and installation process of the heat exchanger 100, the first header 10 It can protect the distribution pipe 40 to prevent the distribution pipe 40 from being damaged; at the same time, the heat exchanger 100 uses the positioning groove 111 provided on the first header 10 to position the distribution pipe 40 in the first header 10 The assembly on the first header 10 is locked, which simplifies the structure and reduces the cost; and the structural arrangement of the buffer member 60 can have a shock-absorbing effect on the assembly of the distribution pipe 40 between the first headers 10 .

The technical features of the above embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

A heat exchanger, including a first header and a distribution tube. Along the axial direction of the first header, the distribution tube is partially inserted into the first header;

It is characterized in that the distribution pipe has an elbow portion for introducing refrigerant, and the elbow portion extends out of the first header and is along an axial direction perpendicular to the first header. , the projection of the elbow part is located on the first header; wherein the first header has a positioning part, the positioning part cooperates with the elbow part to lock the distribution pipe to the first header.
The heat exchanger according to claim 1, wherein the positioning portion is configured as a positioning groove provided on the first header pipe, and the elbow portion is engaged with the positioning groove through snap fit. , to lock the distribution pipe to the first header.
The heat exchanger according to claim 2, wherein the positioning groove includes a first groove part and a second groove part, the second groove part is connected to the first groove part; the distribution pipe can drive all The elbow portion is inserted into the first header along the direction of the first groove portion, and is locked to the third header through snap fit between the second groove portion and the elbow portion. On the collecting pipe.
The heat exchanger according to claim 3, wherein a depth direction of the second groove portion is perpendicular to a depth direction of the first groove portion.
The heat exchanger according to claim 2, wherein the positioning groove is configured in a V-shaped structure, and the distribution pipe can drive the elbow portion to snap into the bottom of the positioning groove.
The heat exchanger according to claim 5, wherein the groove bottom of the positioning groove is configured as an arc surface to match the tube wall of the elbow portion.
The heat exchanger according to claim 1, wherein a cover plate is installed in the first header, and the distribution pipe passes through the cover plate and extends into the first header;

Wherein, a seal is installed between the distribution pipe and the cover plate, so that the cover plate and the first header are enclosed and form an independent chamber.
The heat exchanger according to claim 7, wherein a buffer member is filled between the first header pipe and the distribution pipe, and wherein the buffer member is disposed outside the independent chamber.
The heat exchanger according to claim 8, wherein the buffer member is configured as pearl cotton.
The heat exchanger according to claim 1, further comprising a second header and a plurality of heat exchange tubes, the plurality of heat exchange tubes being disposed between the first header and the second header. between the pipes, and are respectively connected with the distribution pipe and the second header pipe.
The heat exchanger according to claim 10, wherein the distance between the tube opening of the heat exchange tube and the distribution tube is defined as N, 2mm≤N≤3mm.
The heat exchanger according to claim 1, wherein the inner diameter of the distribution pipe is defined as D1, and D1>5mm.
The heat exchanger according to claim 1, wherein the outer diameter of the distribution tube is defined as OD1, and the inner diameter of the first header is defined as D2, 0.2*D2<OD1<0.5*D2.
The heat exchanger according to claim 1, wherein the distance between the inner wall of the first header tube and the distribution tube is defined as being relatively close to the heat exchange tube, and the distance between the inner wall of the first header tube and the distribution tube is defined as being relatively far away. The distance between the inner wall of the heat exchange tube and the distribution tube is h, and the inner diameter of the distribution tube is defined as OD1, where h+OD1<H.
The heat exchanger according to claim 1, wherein the bending radius of the elbow portion is defined as R, and the distance between the inner wall of the first header relatively close to the heat exchange tube and the distribution tube is defined. For H, R＜H.