Heat exchangers and air conditioners

Abstract

A heat exchanger and an air conditioner. The heat exchanger (120) includes a collection pipe (10), a plurality of heat exchange pipes (20), and a plurality of connection joints (30), with the heat exchange pipes (20) corresponding to the connection joints (30) in a one-to-one correspondence. Each heat exchange pipe (20) is connected to a collection pipe (10) via a corresponding connection joint (30), and the connection joints (30) are provided with connection ports (311), and the connection joints (30) are connected to the collection pipe (10) via the connection ports (311). A distribution pipe (40) is attached to the collection pipe (10) along the arrangement direction of the plurality of heat exchange pipes (20), and the distribution pipe (40) is provided with a plurality of distribution holes (41) aligned with the connection ports (311), and each distribution hole (41) is provided so as to directly face the connection port (311). The present invention further provides an air conditioner (100) including a heat exchanger (120).

Description

[Technical Field]

[0001] (Related Applications) This application claims priority to a Chinese patent application filed on August 25, 2022, bearing application number 202211025333.0 and entitled "Heat Exchanger and Air Conditioner," the entire text of which is incorporated herein by reference.

[0002] The present invention relates to the technical field of heat exchange, and more particularly to a heat exchanger and an air conditioner. [Background technology]

[0003]

[0003] Currently, in conventional heat exchangers, the collecting tube and the heat exchange tube are usually directly connected, specifically, a plurality of distribution holes that align with the heat exchange tubes are drilled in the wall of the collecting tube, and the heat exchange tubes are then inserted into the corresponding distribution holes and welded to the collecting tube. However, because the heat exchange tubes are flat and the collecting tubes are usually circular, using the above-mentioned connecting method between the collecting tube and the heat exchange tube makes it difficult to align the distribution holes in the collecting tube with the heat exchange tube. As a result, the refrigerant is distributed from the circular collecting tube to the flat heat exchange tube, resulting in uneven liquid-vapor binary mixture, which affects the heat exchange effect during operation of the heat exchanger. Summary of the Invention

[0004] In view of this, it is necessary to provide a heat exchanger and an air conditioner that solve the above technical problems.

[0005] The heat exchanger includes a collection pipe, a plurality of heat exchange pipes, and a plurality of connecting joints, each of which corresponds to the corresponding heat exchange pipe, and each heat exchange pipe is connected to a corresponding collection pipe via a corresponding connecting joint. The connecting joints are provided with connection ports, each of which has a circular cross section and communicates with the collection pipe via the connection ports. Distribution pipes are attached to the collection pipe along the arrangement direction of the plurality of heat exchange pipes, and the distribution pipes are provided with a plurality of distribution holes aligned with the connection ports, each distribution hole being positioned directly opposite the connection port so that refrigerant in the distribution pipe can be guided via the distribution hole to a corresponding connecting port.

[0006] In the heat exchanger and air conditioning system of the present invention, the structural design of the connecting joints and distribution pipes described above allows, when the heat exchanger is operating, the refrigerant in the collecting pipes to pass through the distribution holes in the distribution pipes and be sprayed towards the connecting ports, which have circular cross sections, in the connecting joints, before being guided to the heat exchange tubes by the connecting joints. This allows the refrigerant to be introduced evenly into each heat exchange tube, thereby optimizing liquid separation. This not only improves the heat exchange effect when the heat exchanger is operating, but also allows the heat exchange tubes and collecting pipes to be connected using connecting joints, making it easier to assemble and connect the heat exchange tubes and collecting pipes.

[0007] In one embodiment, the spacing between two adjacent connection joints is equal to the spacing between two corresponding heat exchange tubes.

[0008] It can be seen that the above structural settings allow the connecting joints to be designed according to the spacing of a plurality of heat exchange tubes so as to meet the requirements for use in which the heat exchange tubes communicate with the flow collecting tubes through the corresponding connecting joints.

[0009] In one embodiment, a turbulence element is mounted within the connection joint, and the refrigerant introduced through the connection port can flow through the turbulence element to the heat exchange tube.

[0010] It can be understood that the structural setting of the turbulence member described above can further play a role in optimizing liquid separation and improving the heat exchange effect during operation of the heat exchanger by acting as a turbulent flow for the refrigerant introduced into the connecting joint.

[0011] In one embodiment, the turbulator is provided as a throttle ring, which is fixedly mounted in the connection joint and has flow holes drilled therein for the coolant to flow through.

[0012] By providing the turbulence element as a throttle ring, the structural setting of the turbulence element can be concretely realized, allowing the refrigerant in the connection joint to flow to the heat exchange tube through the flow path holes in the throttle ring. At the same time, it can be seen that the installation of the throttle ring effectively improves the flow rate of the refrigerant flowing to the heat exchange tube, further increasing the heat exchange coefficient and improving the heat exchange efficiency of the heat exchanger.

[0013] In one embodiment, the connection joint has a stepped surface, and the outer peripheral wall of the draw ring is in close contact with the stepped surface and is connected and fixed to the connection joint.

[0014] It can be seen that by providing a stepped surface at the connection joint, assembly of the draw ring at the connection joint can be specifically realized, making it easier to attach the draw ring to the connection joint.

[0015] In one embodiment, the connection joint includes a circular joint portion, and the connection joint is attached to the flow collector pipe via the circular joint portion, where the connection port is provided in the circular joint portion.

[0016] It can be seen that the above-mentioned structural design of the circular joint portion specifically realizes the assembly connection of the connecting joint on the flow collecting pipe, making it easy to attach the connecting joint to the flow collecting pipe.

[0017] In one embodiment, the connection fitting further includes a heat exchange tube insertion fitting and a transition fitting, the heat exchange tube insertion fitting being connected to and communicating with the circular fitting portion via the transition fitting, wherein the heat exchange tube is attached to the connection fitting via the heat exchange tube insertion fitting.

[0018] It can be seen that the structural design of the heat exchange tube insertion connection section described above specifically realizes the assembly connection between the connection fitting and the heat exchange tube, facilitating the attachment of the heat exchange tube to the connection fitting, and at the same time, the transition connection section is used to connect and communicate between the circular joint section and the heat exchange tube insertion connection section, facilitating the flow of refrigerant within the connection fitting.

[0019] In one embodiment, the collecting pipe is provided with at least one partition plate, which is arranged in the collecting pipe along the arrangement direction of the heat exchange tubes and divides the collecting pipe into a plurality of independent chambers, and each of the collecting pipes has a respective distribution pipe arranged in the independent chamber.

[0020] The above-described partition plate structure separates the collection pipe into multiple independent chambers, allowing the refrigerant introduced into the collection pipe to be distributed among the multiple independent chambers. This prevents the refrigerant introduced into the collection pipe from settling to the bottom due to gravity, thereby suppressing the effects of pressure differences and achieving even distribution of the refrigerant.

[0021] In one embodiment, the heat exchanger further includes a dispenser, the dispenser having a plurality of capillary tubes connected thereto that match the distribution pipes, and the dispenser can be in communication with the corresponding distribution pipes via the capillary tubes.

[0022] It can be seen that the above-mentioned dispenser structure can meet the requirements for distributing the refrigerant introduced into the collecting pipe and evenly distributing the refrigerant to multiple distribution pipes when the heat exchanger is operating.

[0023] The present application further seeks to protect an air conditioning device comprising a device body and a heat exchanger, the heat exchanger being attached to the device body, the heat exchanger being the heat exchanger described in any one of the above claims.

[0024] In this application, the rational structure of the heat exchanger described above can improve the heat exchange effect during operation of the air conditioner, and further plays a role in improving the product performance of the air conditioner.

[0025] By applying the above technical aspects, the present invention has the following advantages over the prior art. The heat exchanger and air conditioner of the present invention, due to the structural design of the connecting joints and distribution pipes described above, can be configured so that when the heat exchanger is operating, the refrigerant in the collecting pipes is sprayed through the distribution holes in the distribution pipes toward the connection ports of the connecting joints, and then led to the heat exchange tubes by the connecting joints. This allows the refrigerant to be introduced evenly into each heat exchange tube, thereby optimizing liquid separation and further improving the heat exchange effect when the heat exchanger is operating, thereby improving the product performance of the air conditioner to which the heat exchanger is applied. At the same time, the heat exchange tubes and collecting pipes are connected using connecting joints, making it easy to assemble and connect the heat exchange tubes and collecting pipes. [Brief explanation of the drawings]

[0026] In order to more clearly explain the technical aspects of the embodiments of the present application or the prior art, drawings necessary for use in the description of the embodiments or the prior art are briefly introduced below. However, the drawings in the following description are only some of the embodiments of the present application, and it is clear that a person skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0027] [Figure 1] FIG. 1 is a structural schematic diagram of a heat exchanger provided by the present application. [Figure 2] 1 is a partial cross-sectional view of a heat exchanger provided by the present application. [Figure 3] FIG. 2 is a cross-sectional view of a connection joint in the present application. [Figure 4] 1 is a structural schematic diagram of an air conditioning device provided by the present application;

[0028] 10 collecting pipe, 101 independent chamber, 11 circular mounting hole, 12 partition plate, 20 heat exchange tube, 30 connecting joint, 301 step surface, 31 circular joint portion, 311 connection port, 32 heat exchange tube insertion joint portion, 321 contour hole, 33 transition joint portion, 34 turbulence member, 341 throttle ring, 3411 flow path hole, 3412 outer peripheral wall, 40 distribution pipe, 41 distribution hole, 50 dispenser, 51 capillary tube, 60 heat dissipation fin, 100 air conditioning device, 110 device body, 120 heat exchanger. DETAILED DESCRIPTION OF THE INVENTION

[0029] The technical aspects of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, but it is clear that the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Any other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0030] It should be understood that when an element is "disposed on" another element, it may be disposed directly on the other element, or there may be intervening elements. When an element is considered to be "disposed on" another element, it may be disposed directly on the other element, or there may be intervening elements. When an element is considered to be "secured to" another element, it may be secured directly to the other element, or there may be intervening elements.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used in the present specification are for the purpose of describing specific embodiments only and are not intended to be limiting of the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] The air conditioning device for which protection is sought in this application includes a device body and a heat exchanger, and the heat exchanger is attached to the device body. It should be noted that the configuration and operation principle of other structures in the air conditioning device can all be based on conventional techniques for conventional air conditioning devices, and will not be described in detail here.

[0033] As shown in FIG. 1, a heat exchanger provided by an embodiment of the present application includes a collection tube 10, a plurality of heat exchange tubes 20, and a plurality of connection joints 30.

[0034] The heat exchange tubes 20 and the connecting joints 30 are in one-to-one correspondence, and each heat exchange tube 20 is connected to the flow collecting tube 10 via the corresponding connecting joint 30. It should be noted that the heat exchange tubes 20 may be specifically configured as a single-row structure or a multi-row structure, and can be specifically provided according to the heat exchange amount required for the application location to which the heat exchanger is applied, and when the heat exchange tubes 20 are in a multi-row structure, the heat exchange tubes 20 in two adjacent rows are connected via a connecting curved pipe.

[0035] 2 , the connection fitting 30 of the present application is provided with a connection port 311, where the cross section of the connection port 311 is circular, and the connection fitting 30 communicates with the flow collection pipe 10 via the connection port 311, and a distribution pipe 40 is attached to the flow collection pipe 10 along the arrangement direction of the plurality of heat exchange pipes 20, and a plurality of distribution holes 41 aligned with the connection ports 311 are drilled in the distribution pipe 40, and each distribution hole 41 is provided directly opposite the connection port 311 so that the refrigerant in the distribution pipe 40 can be guided to the corresponding connection port 311 via the distribution hole 41. That is, the flow collection pipe 10 and the heat exchange pipe 20 of the present application are specifically communicated by the distribution pipe 40 and the connection fitting 30, and thereby the refrigerant can be distributed by the distribution holes 41 in the distribution pipe 40 to be introduced into the connection port 311 of the connection fitting 30 and then flow from the connection fitting 30 to the corresponding heat exchange pipe 20. It should be noted that the refrigerant specifically refers to a refrigerant that is a gas-liquid two-phase mixture.

[0036] The distribution pipe 40 of the present application is arranged parallel to the axis of the collection pipe 10, and the distance between the center line of the distribution pipe 40 and the center line of the collection pipe 10 can be specifically set according to the requirements of use. In some embodiments, the connection port 311 of the connection joint 30 is butted against the position of the distribution hole 41 of the distribution pipe 40, which not only makes it easy to identify the assembly position of the connection joint 30 on the collection pipe 10, but also makes it easy to introduce the refrigerant discharged from the distribution hole 41 into the connection port 311 of the connection joint 30, but will not be described in detail here.

[0037] The refrigerant in the distribution pipe 40 passes through the distribution holes 41 and is sprayed toward the connection port 311 of the connection fitting 30, and is then guided to the heat exchange tubes 20 by the connection fitting 30, thereby allowing the refrigerant to be introduced evenly into each heat exchange tube 20, thereby optimizing liquid separation.It can also be seen that this improves the heat exchange effect during operation of the heat exchanger, and at the same time, the connection fitting 30 can be used to connect the heat exchange tubes 20 and the collection tube 10, making it easier to assemble and connect the heat exchange tubes 20 and the collection tube 10.

[0038] As shown in FIG. 3 , the connection joint 30 of the present application includes a circular joint portion 31, and the connection joint 30 is attached to the flow collection pipe 10 via the circular joint portion 31, and a connection port 311 is provided on the circular joint portion 31, thereby specifically realizing the assembly connection of the connection joint 30 on the flow collection pipe 10 and facilitating the attachment of the connection joint 30 to the flow collection pipe 10.

[0039] Specifically, the flow collector pipe 10 of the present application is provided with a circular mounting hole 11 for matching with the circular joint portion 31, and the circular joint portion 31 of the connection joint 30 is inserted into the circular mounting hole 11, and the circular joint portion 31 and the flow collector pipe 10 are connected and fixed by welding. It should be noted that the circular mounting hole 11 drilled in the flow collector pipe 10 of the present application can be formed by processing, specifically, by punching, so that an inner flange (not shown) is formed at the position of the circular mounting hole 11 on the flow collector pipe 10, which increases the contact area with the flow collector pipe 10 when the circular joint portion 31 of the connection joint 30 is attached to the circular mounting hole 11, and further serves to improve the attachment stability of the connection joint 30 to the flow collector pipe 10.

[0040] The connection joint 30 of the present application further includes a heat exchange tube insertion joint 32 and a transition joint 33. The heat exchange tube insertion joint 32 is connected to and communicates with the circular joint part 31 via the transition joint 33, where the heat exchange tube is attached to the connection joint 30 via the heat exchange tube insertion joint 32, thereby specifically realizing the assembly connection between the connection joint 30 and the heat exchange tube 20 and facilitating the attachment of the heat exchange tube 20 to the connection joint 30. At the same time, the transition joint 33 is used to connect and communicate between the circular joint part 31 and the heat exchange tube insertion joint 32, facilitating the flow of refrigerant within the connection joint 30. Furthermore, the cross-sectional area of ​​the circular joint part 31 is larger than that of the heat exchange tube insertion joint 32, thereby increasing the flow rate of the refrigerant from the circular joint part 31 to the heat exchange tube insertion joint 32, effectively improving the heat exchange coefficient and increasing the heat exchange efficiency of the heat exchanger. It should be noted that the heat exchange tube insertion joint 32 of the connection fitting 30 of the present application is provided with a contoured hole 321 that matches the heat exchange tube 20. Specifically, the shape may be circular, elliptical, flattened, etc., depending on the shape of the heat exchange tube 20. The heat exchange tube 20 is inserted into the contoured hole 321 of the heat exchange tube insertion joint 32 and connected and fixed by welding.

[0041] In the present application, the spacing between two adjacent connection joints 30 is equal to the spacing between two adjacent heat exchange tubes 20, so that the arrangement of multiple connection joints 30 and multiple heat exchange tubes 20 can be specifically realized and the connection joints 30 can be designed according to the spacing between the multiple heat exchange tubes 20, so as to meet the usage requirements of the heat exchange tubes 20 communicating with the flow collector tube 10 via the corresponding connection joints 30. In the present application, the spacing between two adjacent connection joints 30 refers to the distance between the axes of two adjacent connection joints 30, and the spacing between two adjacent heat exchange tubes 20 refers to the distance between the axes of two adjacent heat exchange tubes 20.

[0042] As shown in FIG. 3, a turbulence element 34 is installed in the connection joint 30 of the present application, and the refrigerant introduced from the connection port 311 can flow through the turbulence element 34 to the heat exchange tube 20. Therefore, when the heat exchanger is operating, the turbulence element 34 can be used to create turbulence in the refrigerant introduced into the connection joint 30, thereby optimizing liquid separation and further improving the heat exchange effect when the heat exchanger is operating.

[0043] Specifically, the turbulence element 34 is provided as a throttle ring 341, which is fixedly attached within the connection joint 30, and the throttle ring 341 has flow passage holes 3411 drilled therein to allow the refrigerant to flow through. This specifically realizes the structural setting of the turbulence element 34, allowing the refrigerant within the connection joint 30 to flow to the heat exchange tube 20 via the flow passage holes 3411 in the throttle ring 341, effectively improving the flow rate of the refrigerant flowing into the heat exchange tube, increasing the heat exchange coefficient, and improving the heat exchange efficiency of the heat exchanger.

[0044] It should be noted that the number of the flow passage hole 3411 in the present application is one, specifically, it is provided at the middle position of the aperture ring 341, which facilitates the processing and formation of the flow passage hole 3411 in the aperture ring 341. In some embodiments, the number and positions of the flow passage holes 3411 are not limited to those shown above, and those skilled in the art may provide multiple flow passage holes 3411, which may be distributed at any position on the aperture ring 341, and this will not be described in detail herein.

[0045] The connection joint 30 of the present application has a stepped surface 301, and the outer peripheral wall 3412 of the draw ring 341 is in close contact with the stepped surface 301 and is connected and fixed to the connection joint 30, thereby specifically realizing the assembly of the draw ring 341 on the connection joint 30 and facilitating the attachment of the draw ring 341 to the connection joint 30. It should be noted that the connection between the draw ring 341 and the connection joint 30 can be specifically achieved by welding, and specifically, the connection joint 30 can be welded to the flow collecting tube 10 and the heat exchange tube 20 in a brazing furnace.

[0046] The flow collecting pipe 10 of the present application is provided with at least one partition plate 12, and the partition plate 12 is arranged on the flow collecting pipe 10 along the arrangement direction of the heat exchange tubes 20 to divide the flow collecting pipe 10 into a plurality of independent chambers 101, and a distribution pipe 40 is arranged in each of the independent chambers 101 of the flow collecting pipe 10. In this way, when the heat exchanger is operating, the refrigerant introduced into the flow collecting pipe 10 can be distributed among the plurality of independent chambers 101, which prevents the refrigerant introduced into the flow collecting pipe 10 from settling to the bottom due to the effect of gravity, i.e., it is possible to suppress the effect of pressure difference and evenly distribute the refrigerant. It should be noted that the distribution pipes 40 may be butted against the partition plates 12 within the corresponding independent chambers 101, specifically, and sealed against the partition plates 12, thereby forming respective refrigerant distribution chambers within the independent chambers 101, such that the distribution pipes 40 meet the usage requirements of distributing refrigerant to the connection joints 30.

[0047] 1 , the heat exchanger of the present application further includes a dispenser 50, which is connected to a plurality of capillary tubes 51 that match the distribution pipes 40. The dispenser 50 can communicate with the corresponding distribution pipes 40 through the capillary tubes 51, so that when the heat exchanger is operating, it can distribute the refrigerant introduced into the collecting pipe 10 and meet the requirement of evenly distributing the refrigerant to the plurality of distribution pipes 40. It should be noted that the above-mentioned dispenser 50 may specifically be provided as a liquid dividing connection commonly used in conventional air conditioners, and utilize the structural features of the dispenser 50 itself to evenly distribute the refrigerant to the plurality of distribution pipes 40.

[0048] It should be noted that the heat exchanger of the present application further has heat dissipation fins 60 arranged on the heat exchange tubes 20 to increase the heat exchange area of ​​the heat exchange tubes 20, and the ends of the heat exchange tubes 20 remote from the collection tube 10 are also connected to collection tubes to merge the refrigerants in the heat exchange tubes 20, but this will not be described in detail here.

[0049] As described above, the heat exchanger and air conditioner of the present invention, due to the structural settings of the connecting joint 30 and distribution pipe 40, can be configured so that when the heat exchanger is operating, the refrigerant in the collection pipe 10 passes through the distribution holes 41 of the distribution pipe 40 and is sprayed toward the connection port 311 of the connecting joint 30, and is then guided to the heat exchange tubes 20 by the connecting joint 30. This allows the refrigerant to be introduced evenly into each of the heat exchange tubes 20, thereby optimizing liquid separation and improving the heat exchange effect during operation of the heat exchanger, thereby improving the product performance of the air conditioner to which the heat exchanger is applied. At the same time, the heat exchange tubes 20 and collection pipe 10 can be connected using the connecting joint 30, making it easier to assemble and connect the heat exchange tubes 20 and collection pipe 10.

[0050] The technical features of the above embodiments can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but as long as there is no contradiction in the combination of these technical features, any combination should be considered to be within the scope described in this specification.

[0051] It should be understood by those skilled in the art that the above embodiments are only used to explain the present invention, and are not intended to limit the present invention; any appropriate modifications and variations made by the above embodiments within the essential spirit of the present invention fall within the scope of the claims for protection of the present invention.

Claims

1. A heat exchanger comprising a flow collecting pipe, a plurality of heat exchange tubes, and a plurality of connecting joints, the heat exchange tubes and the connecting joints being in one-to-one correspondence, wherein each of the heat exchange tubes is in communication with the flow collecting pipe via a corresponding one of the connecting joints; a heat exchanger, wherein the connection fitting is provided with a connection port, wherein the connection port has a circular cross section, the connection fitting is in communication with the collection pipe via the connection port, a distribution pipe is attached to the collection pipe along the arrangement direction of the plurality of heat exchange pipes, the distribution pipe is formed with a plurality of distribution holes that align with the connection ports, and each of the distribution holes is arranged directly opposite the connection port so that refrigerant in the distribution pipe can be guided to the corresponding connection port via the distribution hole.

2. The heat exchanger according to claim 1 , wherein the spacing between two adjacent connection joints is equal to the spacing between two corresponding heat exchange tubes.

3. 2. The heat exchanger according to claim 1, wherein a turbulent flow member is attached within the connection joint, so that the refrigerant introduced through the connection port can flow through the turbulent flow member to the heat exchange tube.

4. 4. The heat exchanger according to claim 3, wherein the turbulence member is provided as a throttle ring, the throttle ring being fixedly mounted within the connection joint, and wherein the throttle ring has flow holes drilled therein to allow the refrigerant to flow therethrough.

5. 5. The heat exchanger according to claim 4, wherein the connection joint has a stepped surface, and the outer peripheral wall of the draw ring is in close contact with the stepped surface and is connected and fixed to the connection joint.

6. the connection joint includes a circular joint portion, and the connection joint is attached to the flow collecting pipe via the circular joint portion; 2. The heat exchanger according to claim 1, wherein the connection port is provided in the circular joint portion.

7. the connection joint further includes a heat exchange tube insertion joint portion and a transition joint portion, the heat exchange tube insertion joint portion being connected to and communicating with the circular joint portion via the transition joint portion; The heat exchanger according to claim 6, wherein the heat exchange tube is attached to the connection joint via the heat exchange tube insertion connection portion.

8. the flow collecting pipe is provided with at least one partition plate, the partition plate being disposed in the flow collecting pipe along the arrangement direction of the heat exchange tubes and dividing the flow collecting pipe into a plurality of independent chambers; The heat exchanger according to claim 1 , wherein the collecting pipe has a distribution pipe disposed in each of the independent chambers.

9. The heat exchanger of claim 8, further comprising a dispenser, the dispenser being connected to a plurality of capillary tubes that match the distribution pipes, and the dispensers being capable of communicating with the corresponding distribution pipes via the capillary tubes.

10. An air conditioning apparatus comprising a main body and a heat exchanger, the heat exchanger being attached to the main body, the heat exchanger being the heat exchanger according to any one of claims 1 to 9.

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