WO2024041594A1

WO2024041594A1 - Heat exchanger and air conditioning device

Info

Publication number: WO2024041594A1
Application number: PCT/CN2023/114591
Authority: WO
Inventors: 王冠军; 吴振鑫
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2022-08-25
Filing date: 2023-08-24
Publication date: 2024-02-29
Also published as: CN117663885A

Abstract

A heat exchanger and an air conditioning device. The heat exchanger (120) comprises a collection tube (10), a plurality of heat exchange tubes (20) and a plurality of connection joints (30), the heat exchange tubes (20) being in one-to-one correspondence with the connection joints (30). Each heat exchange tube (20) communicates with the collection tube (10) by means of a corresponding connection joint (30); the connection joints (30) are provided with connection ports (311), the connection joints (30) communicating with the collection tube (10) by means of the connection ports (311); and a distribution tube (40) is mounted in the collection tube (10) in the arrangement direction of the plurality of heat exchange tubes (20), a plurality of distribution holes (41) matched with the connection ports (311) being formed in the distribution tube (40), and each distribution hole (41) being arranged right opposite to the corresponding connection ports (311). The present invention further provides an air conditioner device (100) comprising the heat exchanger (120).

Description

Heat exchanger and air conditioning equipment

Related applications

This application claims priority to the Chinese patent application filed on August 25, 2022, with application number 202211025333.0 and titled "Heat Exchanger and Air Conditioning Equipment", the full text of which is hereby incorporated by reference.

Technical field

The invention belongs to the technical field related to heat exchange, and in particular relates to a heat exchanger and air conditioning equipment.

Background technique

Currently, existing heat exchangers usually have direct connections between header tubes and heat exchange tubes. Specifically, multiple distribution holes matching the heat exchange tubes are opened on the wall of the header tube, and then the heat exchange tubes are inserted into into the corresponding distribution holes and welded together with the header. However, since the heat exchange tubes have a flat structure and the headers usually have a circular structure, using the above-mentioned connection method between the header tubes and the heat exchange tubes makes it difficult to align the distribution holes on the header tubes with the heat exchange tubes. The circular structure of the header pipe is distributed to the flat structure of the heat exchange tube, which will cause the refrigerant mixed with gas and liquid to be unevenly separated, thus affecting the heat exchange effect of the heat exchanger during operation.

Contents of the invention

In view of this, it is necessary to provide a heat exchanger and air conditioning equipment for solving the above technical problems.

A heat exchanger includes a header, a plurality of heat exchange tubes and a plurality of connecting joints. The heat exchange tubes correspond to the connecting joints one by one, wherein each of the heat exchange tubes passes through the corresponding The connecting joints are respectively connected with the headers. The connecting joint is provided with an interface, wherein the cross section of the interface is set to be circular, and the connecting joint is connected to the header through the interface; a plurality of the exchangers are arranged along the inner edge of the header. A distribution pipe is installed in the layout direction of the heat pipe, and a plurality of distribution holes matching the interface are opened on the distribution pipe. Each of the distribution holes is arranged directly opposite the interface, so that the refrigerant in the distribution pipe can The flow is directed to the corresponding interface through the distribution hole.

In this application, through the structural arrangement of the above-mentioned connecting joint and distribution pipe, when the heat exchanger is working, the refrigerant in the header can be sprayed through the distribution hole of the distribution pipe toward the interface with a circular cross-section on the connecting joint, and then The connecting joints are then guided to the heat exchange tubes, so that the refrigerant can be evenly introduced into each heat exchange tube, which also plays a role in optimizing liquid separation, thereby improving the heat exchange effect when the heat exchanger is working; at the same time , use connecting joints to connect the heat exchange tubes and header tubes to facilitate the assembly and connection between the heat exchange tubes and header tubes.

In one embodiment, the spacing between two adjacent connecting joints is equal to the spacing between the corresponding two heat exchange tubes.

It can be understood that through the above structural arrangement, the connecting joints can be designed according to the spacing between the multiple heat exchange tubes, so as to meet the use requirements of the heat exchange tubes being connected to the header through the corresponding connecting joints.

In one embodiment, a spoiler is installed in the connecting joint, and the refrigerant introduced through the interface can flow to the heat exchange tube through the spoiler.

It can be understood that the structural arrangement of the above-mentioned spoiler is used to disrupt the flow of the refrigerant introduced into the connecting joint, which can further optimize the liquid separation and improve the heat exchange effect when the heat exchanger is working. role.

In one embodiment, the spoiler is configured as a throttling ring, and the throttling ring is fixedly installed in the connecting joint; wherein, the throttling ring is provided with a flow channel hole for all The refrigerant circulates.

It can be understood that the spoiler is set as a throttle ring, thereby specifically realizing the structural arrangement of the spoiler, so that the refrigerant in the connection joint can flow to the heat exchange tube through the flow channel hole on the throttle ring; at the same time, the throttling The setting of the ring effectively increases the flow rate of the refrigerant to the heat exchange tube, further increases the heat transfer coefficient and improves the heat exchange efficiency of the heat exchanger.

In one embodiment, the connecting joint has a stepped surface, and the outer peripheral wall of the throttle ring is close to the stepped surface and is connected and fixed with the connecting joint.

It can be understood that by providing a step surface on the connecting joint, the throttle ring is specifically assembled on the connecting joint, so as to facilitate the installation of the throttle ring on the connecting joint.

In one embodiment, the connecting joint includes a circular joint part, and the connecting joint is installed on the header through the circular joint part; wherein the interface is provided on the circular joint part superior.

It can be understood that through the structural arrangement of the above-mentioned circular joint part, the assembly connection of the connecting joint on the header is realized, so as to facilitate the installation of the connecting joint on the header.

In one embodiment, the connection joint further includes a heat exchange tube insertion part and a transition connection part, and the heat exchange tube insertion part is connected and communicated with the circular joint part through the transition connection part; wherein , the heat exchange tube is installed on the connecting joint through the heat exchange tube insertion part.

It can be understood that through the structural arrangement of the heat exchange tube plug-in portion, the assembly connection between the connecting joint and the heat exchange tube is specifically realized, so that the heat exchange tube is installed on the connecting joint; at the same time, the transition connecting portion is used Connect and communicate the circular joint part and the heat exchange tube insertion part to facilitate the circulation of refrigerant in the connecting joint.

In one embodiment, at least one partition plate is provided on the header, and the partition plate is arranged on the header along the arrangement direction of the heat exchange tubes to separate the header. The tube is divided into a plurality of independent chambers; wherein the manifold is provided with distribution tubes in each of the independent chambers.

It can be understood that the header is divided into multiple independent chambers through the structural arrangement of the above-mentioned partition plate, so that The refrigerant introduced into the header can be distributed into multiple independent chambers, which can prevent the refrigerant introduced into the header from being deposited at the bottom under the influence of gravity, which means it can suppress the impact of pressure difference and have equalization. Distribute refrigerant.

In one embodiment, the heat exchanger further includes a distributor, and a plurality of capillary tubes matching the distribution tubes are connected to the distributor. The distributor can communicate with the corresponding distributor through the capillary tubes. The piping is connected.

It can be understood that through the structural arrangement of the above distributor, when the heat exchanger is working, the refrigerant introduced into the header can be distributed to meet the requirement of evenly distributing the refrigerant into multiple distribution pipes.

This application also claims protection for an air conditioning equipment, which includes an equipment main body and a heat exchanger. The heat exchanger is installed on the equipment main body; the heat exchanger is the heat exchanger described in any one of the above.

In this application, through the reasonable structural arrangement of the above-mentioned heat exchanger, the heat exchange effect during operation of the air conditioning equipment can be improved, thereby improving the product performance of the air conditioning equipment.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

In the heat exchanger and air-conditioning equipment of the present invention, through the structural arrangement of the above-mentioned connecting joint and distribution pipe, when the heat exchanger is working, the refrigerant in the header pipe can be sprayed toward the upper interface of the connecting joint through the distribution hole of the distribution pipe, and then re- The heat exchange tubes are guided by the connecting joints, so that the refrigerant can be evenly introduced into each heat exchange tube, which optimizes liquid separation, thereby improving the heat exchange effect when the heat exchanger is working, that is, The product performance of the air conditioning equipment using the heat exchanger is improved; at the same time, the heat exchange tube and the header are connected with a connecting joint to facilitate the assembly and connection between the heat exchange tube and the header.

Description of drawings

In order to more clearly explain the technical solutions in the embodiments of the present application or the traditional technology, the drawings needed to be used in the description of the embodiments or the traditional technology will be briefly introduced below. Obviously, the drawings in the following description are only for this purpose. For some embodiments of the application, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of the heat exchanger provided by this application.

Figure 2 is a partial cross-sectional view of the heat exchanger provided by this application.

Figure 3 is a cross-sectional view of the connection joint in this application.

Figure 4 is a schematic structural diagram of the air conditioning equipment provided by this application.

Reference signs: 10. Manifold; 101. Independent chamber; 11. Circular mounting hole; 12. Partition plate; 20. Heat exchange tube; 30. Connecting joint; 301. Step surface; 31. Circular joint 311. Interface; 32. Heat exchange tube insertion part; 321. Copy hole; 33. Transition connection part; 34. Spoiler; 341. Throttle ring; 3411. Flow channel hole; 3412. Peripheral wall; 40. Distribution tube; 41. Distribution hole; 50. Distributor; 51. Capillary tube; 60. Cooling fins; 100. Air conditioning equipment; 110. Equipment main body; 120. Heat exchanger.

Detailed ways

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

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 "located 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 the invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The air conditioning equipment requested in this application includes a main body of the equipment and a heat exchanger, and the heat exchanger is installed on the main body of the equipment. It should be noted that other structural components and working principles of the air-conditioning equipment can adopt conventional technologies of the existing air-conditioning equipment, and will not be elaborated here.

As shown in FIG. 1 , a heat exchanger provided by an embodiment of the present application includes a header 10 , a plurality of heat exchange tubes 20 and a plurality of connecting joints 30 .

The heat exchange tubes 20 correspond to the connecting joints 30 one-to-one, wherein each heat exchange tube 20 is connected to the header 10 through the corresponding connecting joint 30 . It should be noted that the heat exchange tubes 20 can be configured as a single-row structure or a multi-row structure, which can be specifically configured according to the amount of heat exchange required in the application site where the heat exchanger is used. When the heat exchange tubes 20 are in multiple rows, When arranging, two adjacent rows of heat exchange tubes 20 are connected through connecting elbows.

As shown in Figure 2, the connecting joint 30 of the present application is provided with an interface 311, in which the cross section of the interface 311 is set to be circular, and the connecting joint 30 is connected to the header 10 through the interface 311; the inner edge of the header 10 has multiple A distribution pipe 40 is installed in the layout direction of the root heat exchange tube 20. The distribution pipe 40 is provided with a plurality of distribution holes 41 that match the interface 311. Each distribution hole 41 is disposed directly opposite the interface 311, so that the refrigerant in the distribution pipe 40 The flow can be directed to the corresponding interface 311 through the distribution hole 41 . That is to say, the header 10 and the heat exchange tube 20 of the present application are connected, specifically through the distribution pipe 40 and the connecting joint 30, so that the refrigerant can be introduced into the connecting joint under the distribution of the distribution hole 41 on the distribution pipe 40. 30 interface 311, and then flows from the connecting joint 30 to the corresponding heat exchange tube 20. It should be noted that the above-mentioned refrigerant specifically refers to a gas-liquid two-phase mixed refrigerant.

The distribution pipe 40 of the present application is arranged parallel to the axis of the header 10, and the distance between the center line of the distribution pipe 40 and the center line of the header 10 can be specifically set according to the requirements of use. In some embodiments, the interface 311 on the connecting joint 30 is pressed against the position of the distribution hole 41 on the distribution pipe 40, which not only facilitates the determination of the assembly position of the connecting joint 30 on the header 10, but also facilitates the distribution of The refrigerant discharged from the hole 41 is introduced into the interface 311 of the connecting joint 30, which will not be described here.

It can be understood that the refrigerant in the distribution pipe 40 is sprayed toward the interface 311 on the connecting joint 30 through the distribution hole 41, and then directed to the heat exchange tube 20 through the connecting joint 30, so that the refrigerant can be evenly introduced into each heat exchange tube 20 within, that is to say, it plays the role of optimizing liquid separation, thereby improving the heat exchange effect when the heat exchanger is working; at the same time, the heat exchange tube 20 and the header tube 10 are connected with the connecting joint 30 to facilitate the connection between the heat exchange tube 20 and the header tube 10. Assembly connections between headers 10.

As shown in Figure 3, the connecting joint 30 of the present application includes a circular joint part 31. The connecting joint 30 is installed on the header 10 through the circular joint part 31, and the interface 311 is provided on the circular joint part 31. Specifically, The assembly connection of the connecting joint 30 on the header 10 is realized, so as to facilitate the installation of the connecting joint 30 on the header 10 .

Specifically, the header 10 of the present application is provided with a circular mounting hole 11 to match the circular joint part 31, and the circular joint part 31 of the connecting joint 30 is inserted into the circular mounting hole 11 and welded. The connection and fixation between the circular joint part 31 and the header pipe 10 is achieved in this way. It should be noted that the circular mounting hole 11 provided on the header 10 of the present application can be formed by stamping, so that an inner flange is formed at the location of the circular mounting hole 11 on the header 10 ( (not shown in the figure), thereby increasing the contact area between the circular joint part 31 of the connecting joint 30 and the header 10 when it is installed on the circular mounting hole 11, thereby further improving the connection joint 30 in the header 10 on the installation stability.

The connection joint 30 of the present application also includes a heat exchange tube insertion part 32 and a transition connection part 33. The heat exchange tube insertion part 32 is connected and communicated with the circular joint part 31 through the transition connection part 33; wherein, the heat exchange tube is connected through the transition connection part 33. The heat pipe plug-in part 32 is installed on the connecting joint 30, thereby specifically realizing the assembly connection between the connecting joint 30 and the heat exchange tube 20, so as to facilitate the installation of the heat exchange tube 20 on the connecting joint 30; at the same time, a transition connection part is used 33 connects and communicates the circular joint part 31 and the heat exchange tube insertion part 32 to facilitate the circulation of refrigerant in the connecting joint 30. Furthermore, the cross-sectional area of the circular joint part 31 is larger than the cross-sectional area of the heat exchange tube insertion part 32, so that the flow rate of the refrigerant from the circular joint part 31 to the heat exchange tube insertion part 32 is increased, effectively improving the heat transfer coefficient. , thereby increasing the heat exchange efficiency of the heat exchanger. It should be noted that the heat exchange tube insertion portion 32 of the connection joint 30 of the present application is provided with a profiling hole 321 that matches the heat exchange tube 20. Specifically, it can be set into a circular or oval shape according to the shape of the heat exchange tube 20. Or flat tube shape, etc., and the heat exchange tube 20 is inserted into the profiling hole 321 of the heat exchange tube insertion part 32, and is connected and fixed by welding.

In this application, the distance between two adjacent connection joints 30 is equal to the distance between two adjacent heat exchange tubes 20, thereby specifically realizing the connection between multiple connection joints 30 and multiple heat exchange tubes 20. The arrangement is such that the connecting joints 30 can be designed according to the spacing between the plurality of heat exchange tubes 20 to meet the use requirements of the heat exchange tubes 20 being connected to the header 10 through the corresponding connecting joints 30 . In this application, the spacing between two adjacent connecting joints 30 refers to the distance between the axes of two adjacent connecting joints 30 , and the spacing between two adjacent heat exchange tubes 20 refers to two adjacent heat exchange tubes. 20 distance between axes.

As shown in Figure 3, a spoiler 34 is installed in the connecting joint 30 of the present application. The refrigerant introduced through the interface 311 can flow to the heat exchange tube 20 through the spoiler 34, so that when the heat exchanger is working, the spoiler can be used. The flow member 34 plays a role in disturbing the flow of the refrigerant introduced into the connecting joint 30, which can further optimize liquid separation and improve the heat exchange effect when the heat exchanger is working.

Specifically, the spoiler 34 is configured as a throttle ring 341, and the throttle ring 341 is fixedly installed in the connecting joint 30; wherein, the throttle ring 341 is provided with a flow channel hole 3411 for the circulation of refrigerant. In this way, the structural arrangement of the spoiler 34 is specifically realized, so that the refrigerant in the connecting joint 30 can flow to the heat exchange tube 20 through the flow channel hole 3411 on the throttle ring 341, effectively increasing the flow rate of the refrigerant to the heat exchange tube, thereby increasing the The heat transfer coefficient improves the heat transfer efficiency of the heat exchanger.

It should be noted that the number of the flow channel hole 3411 in this application is one, and it is specifically disposed at the middle position of the throttle ring 341 to facilitate processing and forming the flow channel hole 3411 on the throttle ring 341 . In some embodiments, the number and position of the flow passage holes 3411 are not limited to those shown above. For those skilled in the art, the number of the flow passage holes 3411 can be set to multiple and distributed at any part of the throttle ring 341 The location will not be elaborated here.

The connecting joint 30 of the present application has a step surface 301. The outer peripheral wall 3412 of the throttle ring 341 is close to the step surface 301 and is connected and fixed with the connecting joint 30, thereby specifically realizing the assembly of the throttling ring 341 on the connecting joint 30. , so as to facilitate the installation of the throttle ring 341 on the connecting joint 30 . It should be noted that the connection method between the throttle ring 341 and the connecting joint 30 can be welded, and can be carried out in a brazing furnace together with the connecting joint 30 and the header pipe 10 and the heat exchange tube 20 . welding.

The header 10 of the present application is provided with at least one partition plate 12 . The partition plate 12 is arranged on the header 10 along the arrangement direction of the heat exchange tubes 20 to separate the header 10 into multiple independent chambers. 101, wherein the manifold 10 is respectively arranged with distribution pipes 40 in each independent chamber 101. When the heat exchanger is operated, the refrigerant introduced into the header 10 can be distributed into multiple independent chambers 101, thus preventing the refrigerant introduced into the header 10 from being deposited at the bottom under the influence of gravity. , that is, it can suppress the influence of pressure difference and have the function of evenly distributing refrigerant. It should be noted that the distribution pipe 40 is in the corresponding independent chamber 101, specifically, it can abut against the partition plate 12, and be abutted and sealed with the partition plate 12, so that each distribution pipe 40 is in the independent chamber 101. Each refrigerant distribution cavity is formed therein to meet the usage requirement of the distribution pipe 40 for distributing refrigerant to the connecting joint 30 .

As shown in Figure 1, the heat exchanger of the present application also includes a distributor 50. The distributor 50 is connected to a plurality of capillary tubes 51 that match the distribution tubes 40. The distributor 50 can communicate with the corresponding distribution tube 40 through the capillary tubes 51. When the heat exchanger is operated, the refrigerant introduced into the header 10 can be distributed to meet the requirement of evenly distributing the refrigerant into the plurality of distribution pipes 40 . It should be noted that the above-mentioned distributor 50 can be configured as a liquid distribution joint commonly used in existing air conditioning equipment, and the structural characteristics of the distributor 50 are used to evenly distribute the refrigerant into the plurality of distribution pipes 40 .

In addition, it should be noted that the heat exchanger of the present application is also equipped with heat dissipation fins 60 on the plurality of heat exchange tubes 20 to increase the heat exchange area of the heat exchange tubes 20, and the plurality of heat exchange tubes 20 are far away from each other. One end of the header 10 is also connected with a header to combine the refrigerants in the plurality of heat exchange tubes 20, which will not be described here.

In summary, the heat exchanger and air conditioning equipment of the present invention, through the structural arrangement of the connecting joint 30 and the distribution pipe 40, enable the refrigerant in the header 10 to pass through the distribution hole 41 of the distribution pipe 40 when the heat exchanger is in operation. The refrigerant is sprayed toward the interface 311 on the connecting joint 30 and then directed to the heat exchange tubes 20 through the connecting joint 30. This allows the refrigerant to be evenly introduced into each heat exchange tube 20, thereby optimizing liquid separation, and thus It has the effect of improving the heat exchange effect when the heat exchanger is working, that is, improving the product performance of the air conditioning equipment using the heat exchanger; at the same time, the heat exchange tube 20 and the header pipe 10 are connected with the connecting joint 30 to facilitate exchange. The assembly connection between the heat pipe 20 and the header pipe 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 possible combinations should be used. It is considered to be within the scope of this manual.

Those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present invention and are not used to limit the invention. As long as they are within the scope of the essential spirit of the present invention, appropriate changes can be made to the above embodiments. and changes all fall within the scope of protection claimed by the present invention.

Claims

A heat exchanger includes a header, a plurality of heat exchange tubes and a plurality of connecting joints. The heat exchange tubes correspond to the connecting joints one by one, wherein each of the heat exchange tubes passes through the corresponding The connecting joints are respectively connected with the header pipes;

It is characterized in that the connecting joint is provided with an interface, wherein the cross section of the interface is set to be circular, and the connecting joint is connected to the header through the interface; the inner edge of the header has multiple A distribution pipe is installed according to the arrangement direction of the heat exchange tube. A plurality of distribution holes matching the interface are opened on the distribution pipe. Each of the distribution holes is arranged facing the interface so that the distribution The refrigerant in the tube can be directed to the corresponding interface through the distribution hole.
The heat exchanger according to claim 1, wherein the distance between two adjacent connection joints is equal to the distance between the two corresponding heat exchange tubes.
The heat exchanger according to claim 1, wherein a baffle is installed in the connecting joint, and the refrigerant introduced through the interface can flow to the heat exchange tube through the baffle.
The heat exchanger according to claim 3, wherein the flow spoiler is configured as a throttling ring, and the throttling ring is fixedly installed in the connecting joint; wherein the throttling ring has a flow opening. holes for the circulation of the refrigerant.
The heat exchanger according to claim 4, wherein the connecting joint has a stepped surface, and the outer peripheral wall of the throttle ring is close to the stepped surface and is connected and fixed with the connecting joint.
The heat exchanger according to claim 1, wherein the connecting joint includes a circular joint part, and the connecting joint is installed on the header through the circular joint part;

Wherein, the interface is provided on the circular joint part.
The heat exchanger according to claim 6, wherein the connection joint further includes a heat exchange tube insertion portion and a transition connection portion, and the heat exchange tube insertion portion is connected to the circular joint through the transition connection portion. Connected and interconnected;

Wherein, the heat exchange tube is installed on the connecting joint through the heat exchange tube insertion part.
The heat exchanger according to claim 1, wherein at least one partition plate is provided on the header tube, and the partition plate is arranged in the header tube along the arrangement direction of the heat exchange tube, so as to Separate the header into multiple independent chambers;

Wherein, the manifold is provided with distribution pipes in each of the independent chambers.
The heat exchanger according to claim 8, wherein the heat exchanger further includes a distributor, the distributor is connected with a plurality of capillary tubes matching the distribution tube, and the distributor can pass through the capillary tubes. Connected to the corresponding distribution pipe.
An air conditioning equipment, including an equipment main body and a heat exchanger, the heat exchanger is installed on the equipment main body; characterized in that, the heat exchanger is the heat exchanger described in any one of claims 1-9. device.