EP3988887A1

EP3988887A1 - Header assembly and heat exchanger

Info

Publication number: EP3988887A1
Application number: EP19933469.9A
Authority: EP
Inventors: Tianyi DING; Jian Xie; Shubao CHU; Jianan Chen
Original assignee: Zhejiang Yinlun Machinery Co Ltd
Current assignee: Zhejiang Yinlun Machinery Co Ltd
Priority date: 2019-06-19
Filing date: 2019-09-09
Publication date: 2022-04-27
Anticipated expiration: 2039-09-09
Also published as: EP3988887B1; WO2020252942A1; EP3988887A4; CN110118505A

Abstract

The present application relates to the technical field of heat exchange devices, in particular, to a header assembly and a heat exchanger. The header assembly comprises: a collecting plate, the collecting plate comprising a collecting plate body, and collecting channels and a plurality of slots provided on the collecting body, the plurality of slots being all in communication with the collecting channels, and along the thickness direction of the collecting plate, the collecting channels each having one end closed and the other end open; and a cover plate, the cover plate being stacked on and connected to the collecting plate to seal the other end of each collecting channel. The header assembly provided in the present application has high strength and is easy to process.

Description

Cross-references to related applications

The present application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 19, 2019, with the filing number 201910530131.3 , entitled "Header Assembly and Heat Exchanger", the entire content of which is incorporated into the present application by reference.

Technical Field

The present application relates to the technical field of heat exchange devices, and in particular to a header assembly and a heat exchanger.

Background Art

R134a is generally regarded as an environmentally friendly refrigerant in China, which has however great controversy in Europe and is going through the phase-out procedure, because GWP=1300 (Global Warming Potential value) is too high. Therefore, R134a is only used as a substitute for being transited to environmentally friendly products. It will be completely phased out, sometime in future. However, R744, as a natural working medium, has a GWP value of 1, which is one of the environmentally friendly substitutes for R134a.
In addition to the above-mentioned R134a refrigerant, CO2 (R744) refrigerant can also be used. However, compared to R134a refrigerant, the working pressure of CO2 (R744) refrigerant is significantly increased, and the header is also required to reach a burst pressure of 34MPa. However, the header structure in the traditional heat exchangers cannot withstand this pressure. As shown in FIG. 1, in the traditional heat exchangers, the cross-section of the header is circular. Affected by the structure, shape and the processing technology of the cylindrical header structure, the wall of the processed pipe, which is too thin, has poor pressure resistance, while the wall of the processed pipe, which is too thick, is difficult to be processed and assembled. That is, the pressure resistance of the header is increased by reducing the inner diameter of the header and increasing the thickness of the wall. The smaller the inner diameter of the header, the more difficult it is to process the header.

Summary

The purpose of the present application is to provide a header assembly and a heat exchanger to solve the above technical problems.
The present application provides a header assembly, comprising: a collecting plate, wherein the collecting plate comprises a collecting plate body, and at least one collecting channel and a plurality of slots arranged on the collecting plate body, and each of the slots is in communication with the at least one collecting channel, and one end of the at least one collecting channel is closed and the other end thereof is open, along a thickness direction of the collecting plate; and a cover plate, which is stacked and connected to the collecting plate to seal the other end of the at least one collecting channel.
Optionally, the collecting plate body comprises a base plate and a main plate which are arranged separately, each of the plurality of slots is arranged running through the base plate, the at least one collecting channel comprises a through groove arranged running through the main plate, and the base plate is connected to one side of the main plate to close one end of the through groove; and
the cover plate is connected with the other side of the main plate to seal the other end of the through groove.
Optionally, the through groove is arranged running along a thickness direction of the main plate.
Optionally, the base plate is welded with the main plate, and the main plate is welded with the cover plate.
Optionally, the collecting plate further comprises at least one protrusion portion, which are arranged on a side wall of the at least one collecting channel and fixedly connected to the base plate.
Optionally, a plurality of protrusion portions are provided, and the plurality of protrusion portions are arranged at intervals along an extension direction of the collecting plate; and the plurality of slots and the plurality of protrusion portions are arranged as staggered, in the extension direction of the collecting plate.
Optionally, the collecting channels comprise a first collecting channel, and the at least one protrusion portion comprises communicating protrusion portions provided in the first collecting channel;
the plurality of communicating protrusion portions are configured to divide the first collecting channel into one conducting groove extending along a length direction of the collecting plate and a plurality of flow guiding grooves communieating with the conducting groove; and the flow guiding grooves are arranged directly opposite to the corresponding slots.
Optionally, the flow guiding grooves are adapted to the size of a radiating pipe.
Optionally, the cover plate or the base plate is provided with a medium inlet hole configured to allow the at least one collecting channel to communicate with an external medium inlet pipe.
Optionally, each of the communicating protrusion portions comprises one protrusion, and two adjacent communicating protrusion portions are respectively provided at two opposite side walls of one of the at least one collecting channel.
Optionally, an interval between two adjacent communicating protrusion portions forms the conducting groove, and the first collecting channel is configured to be arranged as an S shape or an arched shape.
Optionally, each of the communicating protrusion portions comprises two protrusions, and the two protrusions are respectively disposed on two side walls of one of the at least one collecting channel, and an interval is provided between the two protrusions with the interval forming the conducting groove.
Optionally, the interval between the two protrusions is arranged obliquely with respect to an extension direction of the collecting plate.
Optionally, any adjacent two of the flow guiding grooves and a section of the conducting groove form an I-shape.
Optionally, the collecting channels comprise a second collecting channel, and each of the protrusion portions comprises partition protrusion portions in the second collecting channel, and the plurality of partition protrusion portions are configured to divide the second collecting channel into a plurality of turning grooves mutually disconnected; and the turning grooves are arranged directly opposite to the corresponding slots.
Optionally, the plurality of slots are arranged at intervals along an extension direction of the collecting plate, and the collecting channels, which are plural in number, are arranged at intervals along an extension direction of the collecting plate.
Optionally, the plurality of slots are divided into a plurality of slot columns arranged side by side, and the collecting channels, which are plural in number, are arranged side by side, and any one of the collecting channels is arranged corresponding to a corresponding one of the slot columns.
Optionally, each collecting channel is of a structure of a rectangular groove, a waist-shaped groove or a special-shaped groove.
The present application also provides a heat exchanger, comprising a plurality of radiating pipes and the header assembly mentioned above, one ends of the radiating pipes being inserted in the slots.
The present application provides a header assembly, comprising: a collecting plate, wherein the collecting plate comprises a collecting plate body, and at least one collecting channel and a plurality of slots arranged on the collecting plate body, and the plurality of slots are each connected with the at least one collecting channel, and along a thickness direction of the collecting plate, one end of the at least one collecting channel is closed and the other end thereof is open; and the cover plate, which is stacked and connected to the collecting plate to seal the other end of the at least one collecting channel.
In the process of manufacturing the heat exchanger using the header assembly provided in the present application, the one ends of the plural radiating pipes of the heat exchanger are made to be inserted into the plural slots one by one; the radiating pipes are brazed and fixed to the base plate; the one ends of the radiating pipes seal (block) the slots; and the open ends of the collecting channels on the collecting plate are sealed by the cover plate, and then the header assembly is sealed outside, and provided inside with medium flow channels. The radiating pipes are communicated with the collecting channels on the collecting plate through the slots, so that the medium can enter the collecting channels from the radiating pipes or enter the radiating pipes from the collecting channels.
The header assembly provided by the present application comprises a collecting plate and a cover plate. The strength can be improved by increasing the wall thickness of the collecting plate (the upper wall thickness, the bottom wall thickness or the side wall thickness). Alternatively, the strength of the header assembly can be improved by increasing the thickness of the cover plate. Alternatively, the thickness of each of the collecting plate and the cover plate is increased, so that the header assembly can provide the sufficient pressure resistance.
The collecting plate is processed to be formed with grooves or holes thereon, and then the cover plate is fixedly connected with the collecting plate to realize the manufacturing of the header assembly. It is easy to process a plate-shaped structure to form grooves or holes. Processing or assembling the plate-shaped structure is easy, enabling the accuracy to be easily guaranteed and the processing efficiency to be improved.

Brief Description of Drawings

The drawings constituting a part of the present application are used to help a further understanding on the present application. The exemplary embodiments of the present application and descriptions thereof are intended to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

FIG. 1 is a schematic structural diagram of the header in the related art;
FIG. 2 is an exploded view of a header assembly according to a first embodiment of the present application;
FIG. 3 is an exploded view of a header assembly according to a second embodiment of the present application;
FIG. 4 is an exploded view of a header assembly according to a third embodiment of the present application;
FIG. 5 is an exploded view of a header assembly according to a fourth embodiment of the present application;
FIG. 6 is an exploded view of a header assembly according to a fifth embodiment of the present application;
FIG. 7 is a schematic structural view of a heat exchanger according to a sixth embodiment of the present application, from one viewing angle;
FIG. 8 is a schematic structural view of the heat exchanger shown in FIG. 7 from another viewing angle;
FIG. 9 is a schematic structural view of a heat exchanger according to a seventh embodiment of the present application, from one viewing angle;
FIG. 10 is a schematic structural view of the heat exchanger shown in FIG. 9 from another viewing angle;
FIG. 11 is a schematic structural view of a heat exchanger according to an eighth embodiment of the present application, from one viewing angle;
FIG. 12 is a schematic structural view of the heat exchanger shown in FIG. 11 from another viewing angle.

In the drawings: 1-collecting plate; 2-cover plate; 12-slot; 13-base plate; 14-main plate; 15-protrusion portion; 111-first collecting channel; 112-second collecting channel; 151-communicating protrusion portion; 152-partition protrusion portion; 1111-flow guiding groove; 1112-conducting groove; 1121-turning groove; 01-first header assembly; 02-second header assembly; 03-third header assembly; 04-fourth header assembly; 05-fifth header assembly; 06-sixth header assembly; 07-radiating pipe; 08-medium inlet hole; and 09-medium outlet hole.

Detailed Description of Embodiments

It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present application will be described in detail with reference to the drawings and in conjunction with the embodiments.
It should be noted that, for ease of description, "columns" and "rows" are mentioned in the present application. The direction of the columns refers to the direction consistent with the extension direction of the collecting plate 1, and the direction of the rows refers to the direction perpendicular to the extension direction of the collecting plate 1.
As shown in FIG. 2, the present application provides a header assembly, including a collecting plate 1 and a cover plate 2. The collecting plate 1 comprises a collecting plate 1 body and the collecting channels and a plurality of slots 12 arranged on the collecting plate 1 body. The plurality of slots 12 are connected with the collecting channels. And, along the thickness direction of the collecting plate 1, one end of the collecting channel is closed and the other end thereof is open. The cover plate 2 is stacked on and connected to the collecting plate 1 to seal the other end of the collecting channels.
In the process of manufacturing the heat exchanger using the header assembly provided by this embodiment, the ends of the plural radiating pipes 07 of the heat exchanger are inserted into the slots 12 one by one, and the radiating pipes 07 are brazed and fixed to the base plate 13. Said one end of the radiating pipe 07 seals the slot 12. The open ends of the collecting channels on the collecting plate 1 are sealed by the cover plate 2, and then the header assembly is sealed outside and provided inside with a medium flow channel. The radiating pipes 07 are in communication with the collecting channels on the collecting plate 1 through the slots 12, so that the medium can enter the collecting channels from the radiating pipes 07 or enter the radiating pipes 07 from the collecting channels.
The header assembly provided by this embodiment comprises a collecting plate 1 and a cover plate 2. The strength can be improved by increasing the wall thickness (the upper wall thickness, the bottom wall thickness or the side wall thickness) of the collecting plate 1. Alternatively, the strength of the header assembly is increased by increasing the thickness of the cover plate 2. Alternatively, the thickness of the collecting plate 1 and the thickness of the cover plate 2 are both increased, so that the header assembly can provide sufficient pressure resistance.
The collecting plate 1 is processed to form grooves or holes, and then the cover plate 2 and the collecting plate 1 are made to be fixedly connected with each other, which can then realize the manufacturing of the header assembly. It is easy to form the grooves or holes by processing on a plate structure, and the processing or assembly of a plate structure is relatively easy, thus the accuracy is easy to be guaranteed, and the processing efficiency is able to be improved.
Here, the collecting channel can be of various structure forms, for example: a rectangular groove, a waist-shaped groove or a special-shaped groove.
As shown in FIG. 2, on the basis of the above-mentioned embodiments, optionally, the collecting plate body comprises a base plate 13 and a main plate 14 which are arranged separately. A plurality of slots 12 are provided running through the bottom plate 13. The collecting channel includes a through groove provided running through the main plate 14. The base plate 13 is connected to one side of the main plate 14 to close said end of the through groove. The cover plate 2 is connected to the other side of the main plate 14 to seal said other end of the through groove.
In this embodiment, along the thickness direction of the main plate 14, a through groove is penetratingly provided. Said end of the through groove is closed by the base plate 13 to form a collecting channel. The through groove is provided penetrating through the base plate 13, which facilitates the punching-processing of the main plate 14, which is more convenient for processing.
Both the fixed connection manner of the base plate 13 and the main plate 14 and the fixed connection manner of the cover plate 2 and the main plate 14 may be various, for example, screw connection or snap connection. Optionally, the base plate 13 and the main plate 14 are welded with each other, and the main plate 14 and the cover plate 2 are welded with each other. The three are connected together by welding, which is firm and reliable, and can further improve the strength of the header assembly.
On the basis of the above-mentioned embodiments, optionally, the collecting plate 1 further comprises a protrusion portion, which is arranged on the side wall of the collecting channel; and the protrusion portion is fixedly connected to the base plate 13.
In this embodiment, the protrusion portion is provided on the side wall of the collecting channel, and the protrusion portion can increase the wall thickness of the collecting channel at its position, thereby improving the strength thereof at this position. When a plurality of protrusion portions are provided, the overall strength of the collecting plate 1 can be improved. The provision of the protrusion portions can increase the strength of the collecting plate 1 while avoiding increasing the overall size of the collecting plate 1, thereby being capable of achieving a compact structure of the collecting plate 1, making the structure of the header assembly compact, so as to avoid occupation of a large space.
Moreover, for different heat exchangers, the size of the protrusion portion can be adjusted according to specific requirements, thereby adjusting the thickness of the side wall of the collecting channel at the corresponding position, with high flexibility.
Optionally, a plurality of protrusion portions are provided, and the plurality of protrusion portions are arranged at intervals along the extension direction of the collecting plate 1. Along the extension direction of the collecting plate 1, the positions where the plural slots 12 are mounted on the base plate 13 and the positions where the plurality of protrusion portions are arranged on the collecting channel are staggered.
In this embodiment, the plurality of slots 12 arranged at intervals along the extension direction of the collecting plate 1 form a column of slots 12. With respect to one column of slots 12, a plurality of slots 12 and a plurality of protrusion portions are alternately arranged. That is to say, one protrusion portion is provided between two adjacent slots 12 to prevent the protrusion portion from blocking the slot 12, thereby blocking the radiating pipe 07, thereby avoiding affecting the medium flowing and transferring between the radiating pipe 07 and the collecting channel. Moreover, the strength of the collecting plate 1 can be improved to a greater extent.
Herein, as shown in FIGS. 2 to 4, the protrusion portions comprise a communicating protrusion portion 151. The collecting channels comprise a first collecting channel 111. The communicating protrusion portion 151 is arranged in the first collecting channel 111 and will be configured to divide the first collecting channel 111 into one conducting groove 1112 extending along the length direction of the collecting plate 1 and a plurality of flow guiding grooves 1111 communicating with the conducting groove 1112. The flow guiding groove 1111 is provided as directly opposite to the corresponding slot 12.
In this embodiment, the flow guiding groove 1111 and the slot 12 are arranged opposite to each other, so as to achieve that the medium can enter the radiating pipe 07 from the flow guiding groove 1111, or enter the flow guiding groove 1111 from the radiating pipe 07. The flow guiding groove 1111 is suitable to the size of the radiating pipe 07 so as to avoid blocking the radiating pipe 07.
The conducting groove 1112 makes the plural flow guiding grooves 1111 communicate with each other, which can converge or distribute the medium. For example, when the collecting channel is communicated with the external medium inlet pipe, the medium enters the collecting channel from the external medium inlet pipe, and then enters the corresponding radiating pipes 07 via the plural flow guiding grooves 1111; and when the collecting channel is communicated with the external medium outlet pipe, the medium in the plurality of radiating pipes 07 is collected in the collecting channel through the corresponding flow guiding grooves 1111, and is uniformly discharged from the external medium outlet pipe. The cover plate 2 or the base plate can be provided thereon with a medium inlet hole 08 configured to make a collecting channel communicate with an external medium inlet pipe, or a medium outlet hole 09 configured to communicate with a medium outlet pipe. The above structure can avoid providing a plurality of medium inlet holes 08 or medium outlet holes 09 on the cover plate 2 or the base plate.
Here, the communicating protrusion portion 151 can be of a variety of structural forms, so that the structure of the collecting channel formed can be of plural forms, for example: the communicating protrusion portion 151 comprises one protrusion. Two adjacent communicating protrusion portions 151 are respectively arranged on two opposite side walls of the collecting channel, and for example, two adjacent communicating protrusion portions are arranged on the left and the right, and there is an interval between the free end of the protrusion portion and the side wall opposite to it, and the interval forms a conducting groove 1112. The formed first collecting channel 111 is in S shape or arched shape.
As an optional embodiment, as shown in FIGS. 2 and 3, the communicating protrusion portion 151 comprises two protrusions, and the two protrusions are respectively arranged on the two side walls of the collecting channel. An interval is provided between the two protrusions, and the interval forms a conducting groove 1112. In such structure, protrusions are provided on the collecting channel except for the positions opposite to the slots 12, so as to further improve the strength of the collecting plate 1, thereby improving the strength of the header assembly.
Here, the interval between the two protrusions can be arranged obliquely with respect to the extension direction of the collecting plate 1. Optionally, the interval between the two protrusions can be arranged parallel to the extension direction of the collecting plate 1, that is, any two adjacent flow guiding grooves 1111 and a section of conducting groove 1112 form an I-shape, with the structure regular and the processing convenient.
As shown in FIGS. 5 and 6, the protrusion portion may also include a partition protrusion portion 152. The collecting channel comprises a second collecting channel 112. The partition protrusion portion 152 is disposed on the side wall of the second collecting channel 112. The plurality of partition protrusion portions 152 are configured to divide the second collecting channel 112 into a plurality of turning grooves 1121 that are not communicated with each other. The turning grooves 1121 are arranged directly opposite to the corresponding slots 12.
In this embodiment, the plurality of partition protrusion portions 152 are configured to divide the second collecting channel 112 into a plurality of mutually disconnected turning grooves 1121, that is, the partition protrusion portions 152 extend from one side wall of the collecting channel to the side wall opposite to said side wall. A plurality of turning grooves 1121 are arranged at intervals along the extension direction of the collecting plate 1. This structure makes the structure of the collecting plate 1 simpler and stronger.
Here, the turning grooves 1121 can be correspondingly communicated with a part of the slots 12 of a same slot 12 column, such as two or three, or that less than the total number of slots in the slot column.
The header assembly provided in this embodiment is suitable to be configured in the heat exchanger with at least two rows of radiating pipes 07, that is, at least two slots are provided at intervals on the body of the collecting plate 1 in a direction perpendicular to the extension direction of the header. One turning groove 1121 communicates with each of the at least two slots 12, so that one turning groove 1121 communicates with at least two radiating pipes 07 arranged side by side, therefore achieving that the medium of one radiating pipe 07 or part of the radiating pipes 07 turns to enter the rest of the radiating pipes 07 at the turning groove 1121, which can assist in realizing the setting of different medium flow paths.
Optionally, as shown in FIGS. 5 and 6, in this embodiment, a first collecting channel 111 and a second collecting channel 112 may be provided on the main plate 14 at the same time, wherein the first collecting channel 111 is located at one end of the main plate in the extension direction and the second collecting channel 112 is located at the other end of the main plate 14 in the extension direction. The first collecting channel 111 and the second collecting channel 112 form two different collecting channels by division, through the partition protrusion portion 152 of the second collecting channel 112, wherein the communicating protrusion portions 151 are provided in the first collecting channel 111, and will be configured to divide the first collecting channel 111 into one conducting groove 1112 extending in the length direction of the collecting plate 1 and a plurality of flow guiding grooves 1111 communicating with the conducting groove 1112. The flow guiding grooves 1111 and the corresponding slots 12 are arranged directly opposite to each other. In addition, a plurality of partition protrusion portions 152 are configured to dividing the second collecting channel 112 into a plurality of turning grooves 1121 that are not communicated with each other, that is, the partition protrusion portion 152 extends from one side wall of the collecting channel to the side wall opposite to said side wall, and the plural turning grooves 1121 are arranged at intervals along the extension direction of the collecting plate 1.
As shown in FIGS. 2 to 4, the body of the collecting plate can be provided with only the first collecting channel 111. As shown in FIG. 5, the body of the collecting plate 1 can also be provided with only the second collecting channel 112. As shown in FIG. 6, the body of the collecting plate 1 can also be provided with the first collecting channel 111 and the second collecting channel 112 both.
As shown in FIG. 3, based on the above embodiments, optionally, one column of the slots is provided, that is, plural slots are arranged at intervals along the extension direction of the collecting plate 1, and the collecting channels are plural in number. The plurality of collecting channels are arranged at intervals along the extension direction of the collecting plate 1, and for example, the number of collecting channels is two. The header assembly provided in this embodiment is provided as cooperating with the radiating pipes 07, which can realize the setting of the multi-flow-path section of the medium.
As shown in FIG. 4, on the basis of the above-mentioned embodiments, there are plural columns of slots, which are arranged side by side. The collecting channels, which are plural in number, are arranged side by side. Moreover, any one of the collecting channels is arranged corresponding to a corresponding column of slots 12. For example, if there are two columns of slots, the number of the collecting channels is two. The header assembly provided in this embodiment is provided as cooperating with the radiating pipes 07, which can realize setting the multiple flow paths of the medium.
The present application provides a heat exchanger, which comprises a plurality of radiating pipes 07 and the header assembly provided in the present application. One end of one radiating pipe 07 is inserted into the slot 12, and the radiating pipe 07 is welded with to the collecting plate 1.
The header assembly in the heat exchanger provided by this embodiment has high strength and simple processing, so that the heat exchanger provided by this embodiment has high processing efficiency and good system stability.
The collecting channel may be of different structural forms and in different numbers, which can be realized differently. With different structure forms of the header assembly, i.e., using different structural forms of the header assembly, it can realize setting the different flow paths of the medium, such as follows.
As an alternative, as shown in FIGS 7 and 8, the heat exchanger is of a single-row structure, that is, a plurality of radiating pipes 07 are arranged at intervals along the extension direction of the header, to be formed in one column. The heat exchanger uses one header assembly as shown in FIG. 3 and one header assembly as shown in FIG. 2. The former header assembly is regarded as the first header assembly 01, and the latter header assembly is regarded as the second header assembly 02. Along the extension direction of the radiating pipe 07, the first header assembly 01 and the second header assembly 02 are respectively arranged at the two ends of the column of radiating pipes 07.
The collecting plate 1 in the first header assembly 01 comprises two header channels, which are arranged at intervals along the extension direction of the collecting plate 1, wherein one is a medium inflow collecting channel, which is correspondingly arranged and communicated with a part of the slots 12, and the other one is a medium outflow collecting channel which is correspondingly arranged and communicated with another part of the slots 12. The cover plate 2 in the first header assembly 01 is provided with a medium inlet hole 08 and a medium outlet hole 09. The medium inlet hole 08 is communicated with the medium inflow collecting channel, and the medium outlet hole 09 is communicated with the medium outflow collecting channel.
Optionally, the medium inlet hole 08 can be provided in various forms, such as, a circular through hole, a rectangular through hole or an elliptical through hole. Preferably, the medium inlet hole 08 is provided as a circular through hole. Similarly, the medium outlet hole 09 is also provided as a circular through hole. In addition, an anti-corrosion layer can be provided at the edge of the medium inlet hole 08 or the medium outlet hole 09 to ensure that when the medium flows out or in, it will not continuously corrode the edge of the medium inlet hole 08 or the medium outlet hole 09 to affect the service life of the cover plate 2.
The collecting plate 1 in the second header assembly 02 comprises one header channel, which is a turning collecting channel, and the turning collecting channel is correspondingly arranged and communicated with all the slots 12.
The flow path of the medium is as follows: the medium enters the medium inflow collecting channel through the medium inlet hole 08, enters the plural radiating pipes 07 corresponding to it from the medium inflow collecting channel, and then enters the turning collecting channel, and enters, via turning through the turning collecting channel, the radiating pipes 07 corresponding to the medium outflow collecting channel, and then the medium is collected in the medium outflow collecting channel, and finally, the medium is discharged from the medium outlet hole 09.
As an optional embodiment, as shown in FIGs 9 and 10, the heat exchanger is of a double-row structure, that is, comprises two columns of radiating pipes 07. The heat exchanger uses one header assembly as shown in FIG. 4 and one header assembly shown in FIG. 5. The former header assembly is the third header assembly 03, and the latter header assembly is the fourth header assembly 04. Along the extension direction of the radiating pipes 07, the third header assembly 03 and the fourth header assembly 04 are respectively arranged at the two ends of the column of radiating pipes 07.
The collecting plate 1 in the third header assembly 03 comprises two first header channels, and the two header channels are arranged side by side, wherein one is the medium inflow collecting channel which is provided corresponding to the first column of slots and communicated with each of the plural slots 12 in said column, and the other one is the medium outflow collecting channel which is arranged corresponding to the second column of slots and communicated with each of the plural slots 12 of said column. The cover plate 2 in the third header assembly 03 is provided with a medium inlet hole and a medium outlet hole. The medium inlet hole is communicated with the medium inflow collecting channel, and the medium outlet hole is communicated with the medium outflow collecting channel.
The second header assembly 02 comprises one second header channel. Along the extension direction of the collecting plate 1, the turning grooves 1121 in the second header channel are arranged in one-to-one correspondence with the slots 12 in each row and are communicated with each of the two slots 12.
The flow path of the medium is as follows: the medium enters the medium inflow collecting channel through the medium inlet hole, and enters, from the medium inflow collecting channel, each radiating pipe 07 in the first column of radiating pipes 07, wherein in the same row, the medium turns to the radiating pipes 07 in the second column of radiating pipes 07, through the turning groove 1121, from the radiating pipes 07 in the first column of radiating pipes 07. The medium flows back to the medium outflow collecting channel from the plurality of radiating pipes 07 in the second column of radiating pipes 07 and is collected (converged). Finally, the medium is discharged from the outlet hole.
As an optional embodiment, as shown in FIGS 11 and 12, the heat exchanger is of a double-row structure, that is, it comprises two columns of radiating pipes 07. The heat exchanger uses a header assembly as shown in FIG. 6 and a header assembly shown in FIG. 4. The former header assembly is the fifth header assembly 05, and the latter header assembly is the sixth header assembly 06. Along the extension direction of the radiating pipe 07, the fifth header assembly 05 and the sixth header assembly 06 are respectively arranged at the two ends of the column of radiating pipes 07.
The collecting plate 1 in the fifth header assembly 05 comprises two columns of slots (slot columns) arranged side by side, two first collecting channels 111 arranged side by side, and one second collecting channel 112 arranged in parallel with the first collecting channels 111. The two columns of slots are respectively arranged in one-to-one correspondence with the two columns of radiating pipes, and the two first collecting channels 111 are arranged in one-to-one correspondence with the two columns of slots respectively, wherein one is the medium inflow first collecting channel 111 (i.e. the first collecting channel which the medium flows into), the medium inflow first collecting channels 111 being communicated with part of the slots 12 in the first column of slots 12; and the other one is the medium outflow first collecting channel 111 (i.e. the first collecting channel which the medium flows out from), the medium outflow first collecting channel 111 being communicated with part of slots 12 in the second column of slots 12. The second collecting channel 112 is communicated with the remaining slots 12 in the first column of slots 12. The second collecting channel 112 is communicated with the remaining slots 12 in the second column of slots 12. And, one turning groove 1121 is communicated with two slots 12 arranged in the same row. The base plate 13 of the fifth header assembly 05 is provided thereon with a medium inlet hole and a medium outlet hole. The medium inlet hole communicates with the medium inflow first collecting channel 111, and the medium outlet hole communicates with the medium outflow first collecting channel 111.
The collecting plate 1 in the sixth header assembly 06 comprises two columns of slots 12 arranged side by side and two first collecting channels 111 arranged side by side. Two columns of slots 12 and two columns of radiating pipes 07 are arranged as corresponding one-to-one to each other. The two first collecting channels 111 and the two columns of slots 12 are arranged as corresponding one-to-one to each other. One of the two first collecting channels 111 is the first turning channel, and the other one is the second turning channel.
The flow path of the medium is as follows: the medium enters the medium inflow first collecting channel 111 through the medium inlet hole, enters from the medium inflow first collecting channel 111 the radiating pipes 07 communicated with the first collecting channel 111 in the first column of the radiating pipes 07, and then enters the first turning channel from the radiating pipes 07. The medium turns in the first turning channel and enters the remaining radiating pipes 07 in the first column of the radiating pipes 07 and then enters the second collecting channel 112, and flows, from the turning groove 1121 in the second collecting channel 112, into the radiating pipes 07 corresponding to the second collecting channel 112 in the second column of radiating pipes 07, and then enters the second turning channel, and then turns in the second turning channel and enters the remaining radiating pipes 07 in the second column of radiating pipes 07, and then enters the medium outflow second collecting channel 112, and finally is discharged from the medium outlet.
The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.
In addition, those skilled in the art can understand that although some of the above embodiments include certain features, but not all features, included in other embodiments, the combination of features of different embodiments means that they are within the scope of the present application and form different embodiments. For example, in the appended claims, any one of the claimed embodiments can be used in any combinations. In addition, the information disclosed in the background technology section is only intended to deepen the understanding of the overall background technology of the present application, and should not be regarded as acknowledging or suggesting, in any form, that the information constitutes the prior art already known to those skilled in the art.

Industrial Applicability

The header assembly provided by the embodiments of the present application can provide sufficient pressure resistance, and can realize the manufacture of the header assembly. It is easy to process the plate-shaped structure to form grooves or holes, and processing or assembling the plate-shaped structure is easy, such that the accuracy is easy to be guaranteed, and the processing efficiency can be improved.

Claims

A header assembly, comprising: a collecting plate, wherein the collecting plate comprises a collecting plate body, and at least one collecting channel and a plurality of slots arranged on the collecting plate body, and each of the slots is in communication with the at least one collecting channel, and the at least one collecting channel has one end closed and the other end open, along a thickness direction of the collecting plate; and
a cover plate, which is stacked on and connected to the collecting plate to seal the other end of the at least one collecting channel.
The header assembly according to claim 1, wherein the collecting plate body comprises a base plate and a main plate which are arranged separately, each of the plurality of slots is arranged running through the base plate, the at least one collecting channel comprises a through groove arranged running through the main plate, and the base plate is connected to one side of the main plate to close one end of the through groove; and
the cover plate is connected with the other side of the main plate to seal the other end of the through groove.
The header assembly according to claim 2, wherein the through groove is arranged running through the main plate along a thickness direction of the main plate.
The header assembly according to claim 2 or 3, wherein the base plate is welded with the main plate, and the main plate is welded with the cover plate.
The header assembly according to any one of claims 2-4, wherein the collecting plate further comprises at least one protrusion portion, which is arranged on a side wall of the at least one collecting channel and fixedly connected to the base plate.
The header assembly according to claim 5, wherein a plurality of protrusion portions are provided, and the plurality of protrusion portions are arranged at intervals along an extension direction of the collecting plate; and the plurality of slots and the plurality of protrusion portions are arranged as staggered, in the extension direction of the collecting plate.
The header assembly according to claim 6, wherein the at least one collecting channel comprises a first collecting channel, and the at least one protrusion portion comprises communicating protrusion portions provided in the first collecting channel;
the plurality of communicating protrusion portions are configured to divide the first collecting channel into one conducting groove extending along a length direction of the collecting plate and a plurality of flow guiding grooves communicating with the conducting groove; and the flow guiding grooves are arranged directly opposite to the corresponding slots.
The header assembly according to claim 7, wherein the flow guiding grooves are each adapted to a size of a radiating pipe.
The header assembly according to claim 7 or 8, wherein the cover plate or the base plate is provided with a medium inlet hole configured to allow the at least one collecting channel to communicate with an external medium inlet pipe.
The header assembly according to any one of claims 7-9, wherein each of the communicating protrusion portions comprises one protrusion, and two adjacent communicating protrusion portions are respectively provided at two opposite side walls of one of the at least one collecting channel.
The header assembly according to claim 10, wherein an interval between the two adjacent communicating protrusion portions forms the conducting groove, and the first collecting channel is configured to be arranged as an S shape or an arched shape.
The header assembly according to any one of claims 7-9, wherein each of the communicating protrusion portions comprises two protrusions, and the two protrusions are respectively disposed on two side walls of one of the at least one collecting channel, and an interval is provided between the two protrusions with the interval forming the conducting groove.
The header assembly according to claim 12, wherein the interval between the two protrusions is arranged obliquely with respect to the extension direction of the collecting plate.
The header assembly according to any one of claims 7-13, wherein any adjacent two of the flow guiding grooves and a section of the conducting groove form an I-shape.
The header assembly according to any one of claims 6-14, wherein the at least one collecting channel comprises a second collecting channel, and each of the protrusion portions comprises partition protrusion portions in the second collecting channel, and the plurality of partition protrusion portions are configured to divide the second collecting channel into a plurality of turning grooves mutually disconnected; and the turning grooves are arranged directly opposite to the corresponding slots .
The header assembly according to any one of claims 1-15, wherein the plurality of slots are arranged at intervals along an extension direction of the collecting plate, and the at least one collecting channel comprises plural collection channels which are arranged at intervals along an extension direction of the collecting plate.
The header assembly according to any one of claims 1-16, wherein the plurality of slots are divided into a plurality of slot columns arranged side by side, and the at least one collecting channel comprises plural collection channels which are arranged side by side, and any one of the collecting channels is arranged corresponding to a corresponding one of the slot columns.
The header assembly according to any one of claims 1-17, wherein the at least one collecting channel is of a structure of a rectangular groove, a waist-shaped groove or a special-shaped groove.
A heat exchanger, comprising a plurality of radiating pipes and the header assembly according to any one of claims 1-18, one ends of the radiating pipes being inserted in the slots.