Heat exchanger
By using connecting units to connect adjacent manifold sections in the heat exchanger, the problem of poor fit between adjacent manifolds is solved, the processing difficulty and defect rate are reduced, and the structural stability and heat exchange efficiency are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DUNAN THERMAL TECHNOLOGY CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-29
AI Technical Summary
In the manufacturing of existing combined heat exchangers, the manifolds of adjacent heat exchange units are prone to misfitting, which increases the processing difficulty and makes it difficult to guarantee product quality.
Adjacent heat exchange unit manifold sections are connected by connectors to form a longer manifold. Connecting blocks and connecting channels are used to improve connection stability, and fasteners are used to achieve detachable connection.
This reduces processing difficulty, decreases product defect rate, and improves the overall structural stability and heat exchange efficiency of the heat exchanger.
Smart Images
Figure CN224302830U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of heat exchange, and in particular to a heat exchanger. Background Technology
[0002] A heat exchanger heat exchange unit consists of heat exchange tubes, fins mounted on the heat exchange tubes, and two manifolds. Typically, depending on the application conditions, different sizes and quantities of heat exchange units can be selected to form a new combined heat exchanger to meet the requirements of the operating conditions.
[0003] However, the greater the heat exchange required under the operating conditions, the more heat exchange units are needed in the combined heat exchanger. When the number of heat exchange units exceeds a certain limit, the manifolds of adjacent heat exchange units are directly connected during the manufacturing of the combined heat exchanger. This can easily lead to poor matching between adjacent manifolds, requiring a lot of time to adjust the position of the manifolds to ensure that all manifolds are coaxial. This increases the manufacturing difficulty of the combined heat exchanger and makes it difficult to guarantee its quality. Utility Model Content
[0004] Therefore, it is necessary to provide a heat exchanger that can reduce processing difficulty and product defect rate.
[0005] A heat exchanger, comprising:
[0006] At least two heat exchange units are arranged sequentially at intervals along a first direction, and each heat exchange unit includes a manifold section extending along the first direction.
[0007] A connecting unit, at least a portion of which is disposed between two adjacent manifold segments along the first direction, and the two ends of the connecting unit are respectively connected to the manifold segments on the corresponding sides.
[0008] In one embodiment, two manifold segments arranged adjacent to the connecting unit are defined as a first manifold segment and a second manifold segment, respectively, and the connecting unit is located between the first manifold segment and the second manifold segment.
[0009] The connecting unit includes a first connecting pipe extending along the first direction, the circumference of the first connecting pipe is defined as the second direction, one end of the first connecting pipe is sealed to the first manifold section in the second direction, and the other end of the first connecting pipe is sealed to the second manifold section in the second direction.
[0010] In one embodiment, the connection unit further includes a connector having a first portion located between the first connecting pipe and the second manifold segment, the first portion having a connection channel inside, through which the first connecting pipe is connected to the second manifold segment.
[0011] In one embodiment, the connector includes a first connecting block and a second connecting block arranged coaxially and connected to each other, the first connecting block and the second connecting pipe being internally connected to form the connecting channel.
[0012] In one embodiment, the first connecting block and the second connecting block are stacked along the first direction, the connecting channel has a first side and a second side disposed opposite to each other along the first direction, the first connecting block is provided with a first clearance hole along the first direction, the first clearance hole is located on the first side of the connecting channel and communicates with the connecting channel, and the first connecting pipe is inserted into the first clearance hole.
[0013] The second connecting block is provided with a second clearance hole along the first direction. The second clearance hole is located on the second side of the connecting channel and communicates with the connecting channel. The second manifold section is inserted into the second clearance hole.
[0014] In one embodiment, the first connecting block and the second connecting block are provided with a first connecting portion and a second connecting portion that are plugged in, wherein one of the first connecting portion and the second connecting portion is a protrusion and the other is a recess that is sealed and connected to the protrusion in the second direction.
[0015] In one embodiment, the inner diameter of the second clearance hole is larger than the inner diameter of the first clearance hole;
[0016] Alternatively, the inner diameter of the second clearance hole is equal to the inner diameter of the first clearance hole, and the inner diameter of the protrusion is greater than the inner diameter of the second clearance hole.
[0017] In one embodiment, the connecting unit further includes a second connecting pipe extending along the first direction, with its two ends connected to the connecting channel and the second manifold segment, respectively.
[0018] In one embodiment, the first connecting block has a first groove on its end face near the second connecting block, and the first groove extends circumferentially along the first connecting block, and / or;
[0019] The second connecting block has a second groove on its end face near the first connecting block. The second groove extends circumferentially along the second connecting block and corresponds to the first groove.
[0020] The connecting unit further includes a sealing gasket, which is disposed in the first groove and / or the second groove, and the first connecting block and the second connecting block are in sealed communication.
[0021] In one embodiment, the heat exchange unit further includes a heat exchange tube extending along the length of the heat exchanger, the end of the heat exchange tube passing through the manifold section to connect the heat exchange tube with the manifold section, and there is a connection space between the heat exchange tubes of two adjacent heat exchange units, with at least a portion of the connector located within the connection space.
[0022] In one embodiment, each of the manifold segments is formed by stacking and connecting multiple coaxially arranged unit segments. The unit segment at the top of each manifold segment is defined as the first unit segment, and the unit segment at the bottom of each manifold segment is defined as the second unit segment. Each unit segment includes a first segment at the top and a second segment at the bottom. The diameter of the first segment is smaller than the diameter of the second segment, so that the first segment of the unit segment can be inserted into the second segment of the adjacent unit segment.
[0023] The two ends of the connecting unit are respectively connected to the second section of the second unit tube and the first section of the first unit tube in the adjacent manifold section.
[0024] Compared with the prior art, the heat exchanger provided in this application connects the manifold sections in adjacent heat exchange units using connecting units, allowing multiple shorter manifold sections to form a longer manifold, and enabling the heat exchange units to form a heat exchanger. In other words, compared with heat exchangers that do not use connecting units, under the premise that the manifold lengths are the same, the multiple manifold sections of the heat exchanger in this application are shorter than the manifolds in the prior art. Therefore, each shorter manifold section is less prone to bending and deformation during production. At the same time, using connecting units to connect the manifold sections in adjacent heat exchange units can effectively avoid the problem of poor matching between adjacent manifold sections, and can also reduce processing difficulty and product defect rate. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a perspective view of a heat exchanger according to an embodiment of this application;
[0027] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0028] Figure 3 for Figure 2 Cross-sectional view at the location;
[0029] Figure 4 This is a schematic diagram of the connection unit in another embodiment of this application;
[0030] Figure 5 for Figure 4 Cross-sectional view at the location;
[0031] Figure 6 This is a schematic diagram of the connection unit in another embodiment of this application;
[0032] Figure 7 for Figure 6 Cross-sectional view at the location;
[0033] Figure 8 for Figure 4 Explosion diagram of the connecting unit in the image;
[0034] Figure 9 for Figure 8 A schematic diagram of the first connecting block;
[0035] Figure 10 for Figure 8 A schematic diagram of the second connecting block;
[0036] Figure 11 for Figure 6 Explosion diagram of the connecting unit in the image;
[0037] Figure 12 for Figure 11 A schematic diagram of the first connecting block.
[0038] Reference numerals: 1. Heat exchanger; 10. Heat exchange unit; 100. Manifold section; 101. First manifold section; 102. Second manifold section; 110. Unit section; 111. First section; 112. Second section; 1101. First unit section; 1102. Second unit section; 200. Heat exchange tube; 201. First heat exchange tube; 202. Second heat exchange tube; 300. Connecting space; 20. Connecting unit; 210. First 220. Connecting pipe; 2201. First part; 2202. Connecting channel; 221. First connecting block; 2211. First clearance hole; 2212. Protrusion; 2213. First groove; 222. Second connecting block; 2221. Second clearance hole; 2222. Recess; 2223. Second groove; 223. Fastener; 224. Sealing gasket; 230. Second connecting pipe; 30. Adapter pipe; 40. Side plate. Detailed Implementation
[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0040] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.
[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.
[0044] Please see Figures 1 to 12 This application provides a heat exchanger 1, defining the height direction of the heat exchanger 1 as a first direction B, and the heat exchanger 1 includes at least two heat exchange units 10 (e.g., Figure 1 (As shown between adjacent dashed lines) and a connecting unit 20 for connecting adjacent heat exchange units 10. The heat exchange units 10 are arranged coaxially and spaced apart along the first direction B, and each heat exchange unit 10 includes a manifold section 100 extending along the first direction B; at least some of the connecting units 20 are located between two adjacent manifold sections 100 along the first direction B, and the two ends of the connecting unit 20 are respectively connected to the manifold section 100 on the corresponding side.
[0045] It is understood that the heat exchanger 1 provided in this application connects the manifold segments 100 in adjacent heat exchange units 10 using the connecting unit 20, so that multiple shorter manifold segments 100 can form a longer manifold, and the heat exchange units 10 can form the heat exchanger 1. In other words, compared with the heat exchanger 1 without the connecting unit 20, under the premise that the manifold length is the same, the multiple manifold segments 100 of the heat exchanger 1 in this application are all shorter than the manifolds in the prior art (i.e. the heat exchanger 1 without the connecting unit 20). Therefore, each shorter manifold segment 100 is less likely to bend or deform during production. At the same time, using the connecting unit 20 to connect the manifold segments 100 in adjacent heat exchange units 10 can effectively avoid the problem of poor matching of adjacent manifold segments 100, and can also reduce the processing difficulty and reduce the product processing defect rate.
[0046] It should be noted that, under the premise that the length of the manifold is consistent, in this embodiment, the manifold is spliced together from multiple shorter manifold segments 100. The length of the connecting unit 20 is not included when calculating the length of the manifold.
[0047] The heat exchange unit 10 also includes a heat exchange tube 200 extending along the length of the heat exchanger 1. A groove is formed on the manifold section 100, and the end of the heat exchange tube 200 is inserted into the groove, meaning the end of the heat exchange tube passes through the manifold section 100, allowing the heat exchange tube 200 to communicate with the manifold section 100. Further, in the width direction of the heat exchanger 1, the heat exchange tube 200 is U-shaped, and there are two manifolds. The two ends of the heat exchange tube 200 are respectively connected to the corresponding manifolds, meaning the two manifolds are arranged side-by-side in the width direction of the heat exchanger 1. This reduces the volume of the heat exchange unit 10, and consequently, the volume of the heat exchanger 1. In other embodiments, the heat exchange tube 200 can also be straight, with the two manifolds located on opposite sides of the heat exchange tube 200, meaning the two manifolds are arranged side-by-side in the length direction of the heat exchanger 1. This improves the versatility of the heat exchanger 1 and makes the overall structure of the heat exchanger more compact.
[0048] Furthermore, each manifold is equipped with a transfer pipe 30 at one end. One transfer pipe 30 is the inlet for refrigerant to flow into the manifold, and the other transfer pipe 30 is the outlet for refrigerant to flow out of the manifold. The medium enters from the inlet transfer pipe 30 and flows out from the outlet transfer pipe 30. When the heat exchanger 1 is used as a condenser, the medium inside the heat exchange tube 200 releases heat to the external environment; when the heat exchanger 1 is used as an evaporator, the medium inside the heat exchange tube 200 absorbs heat to the external environment.
[0049] In one embodiment, the first direction B is defined as the vertical direction. Two manifold segments 100 arranged adjacent to the connecting unit 20 are defined as the first manifold segment 101 and the second manifold segment 102, respectively. The connecting unit 20 is located between the first manifold segment 101 and the second manifold segment 102. In other words, at least a portion of the first manifold segment 101 is located above the connecting unit 20, and at least a portion of the second manifold segment 102 is located below the connecting unit 20. The connecting unit 20 includes a first connecting pipe 210 extending along the first direction B. The circumferential direction of the first connecting pipe 210 is defined as the second direction. The top end of the first connecting pipe 210 is sealed to the first manifold segment 101 in the second direction, and the bottom end of the first connecting pipe 210 is sealed to the second manifold segment 102 in the second direction. (See reference...) Figure 2 and Figure 3 The first connecting pipe 210 has a simple structure, thus allowing the first manifold section 101 and the second manifold section 102 to be connected into a relatively long manifold. It is understood that the first connecting pipe 210, the first manifold section 101, and the second manifold section 102 are connected in the first direction. The top end of the first connecting pipe 210 is sealed to the first manifold section 101 in the second direction. This can be achieved by the top wall of the top end of the first connecting pipe 210 abutting against and sealing the bottom wall of the first manifold section 101, or by the side walls of the top end of the first connecting pipe 210 and the side walls of the first manifold section 101 interlocking and sealing each other. This application does not impose any restrictions on this, as long as it ensures that the refrigerant does not leak from the connection between the first connecting pipe 210 and the first manifold section 101. Similarly, the bottom end of the first connecting pipe 210 is sealed to the second manifold section 102 in the second direction. This can be achieved by the bottom wall of the first connecting pipe 210 abutting against and sealing the bottom wall of the second manifold section 102, or by the side wall of the bottom end of the first connecting pipe 210 and the side wall of the second manifold section 102 being inserted into each other and sealingly connected. This application does not impose any restrictions on this, as long as it ensures that the refrigerant does not leak from the connection between the first connecting pipe 210 and the second manifold section 102.
[0050] Further, see Figure 3The bottom end of the first manifold section 101 is fitted onto the outside of the top end of the first connecting pipe 210 to improve the sealing between the first manifold section 101 and the first connecting pipe 210, preventing refrigerant leakage at the connection point. In other embodiments, the top end of the first connecting pipe is fitted onto the outside of the bottom end of the first manifold section, which also improves the sealing between the first manifold section and the first connecting pipe; this application does not limit this. Similarly, the bottom end of the first connecting pipe is fitted onto the top end of the second manifold section, or vice versa; this application does not limit this.
[0051] In this embodiment, the heat exchanger 1 schematically includes three heat exchange units 10 and a connecting unit 20 located between two adjacent heat exchange units 10. It is understood that the first manifold section 101 and the second manifold section 102 are relative concepts. For the middle heat exchange unit 10, when the connecting unit 20 at the top is taken as a reference, since the heat exchange unit 10 is below the connecting unit 20, the manifold section 100 in this heat exchange unit 10 is the second manifold section 102; while when the connecting unit 20 at the bottom is taken as a reference, since the heat exchange unit 10 is above the connecting unit 20, the manifold section 100 in this heat exchange unit 10 is the first manifold section 101. That is, by choosing different reference points, the manifold section 100 of the middle heat exchange unit 10 can be either the first manifold section 101 or the second manifold section 102. This application does not limit the number of heat exchange units 10.
[0052] In one embodiment, see Figure 4 , Figure 5 , Figure 6 and Figure 7 The connecting unit 20 further includes a connector 220, which has a first portion 2201 located between the first connecting pipe 210 and the second manifold section 102. The first portion 2201 has a connecting channel 2202 inside, such as... Figure 5 and Figure 7As shown, the first connecting pipe 210 is connected to the second manifold section 102 via the connecting channel 2202. This improves the versatility of the connector 220 for the heat exchanger 1. Schematably, the connector 220 is a connecting block. The first part 2201 of the connecting block has a through hole along the first direction B, which is the aforementioned connecting channel 2202. In the circumferential direction of the first manifold section 101, the connecting block protrudes from the wall of the first manifold section 101 to enhance the connection stability between the first manifold section 101 and the second manifold section 102, resulting in better overall integrity of the heat exchanger 1. In other embodiments, the connector can also be a pipe with a diameter different from that of the first connecting pipe, so that the first connecting pipe and the connector can respectively adapt to the first and second manifold sections with different diameters.
[0053] Furthermore, the connecting channel 2202 has a connecting inlet and a connecting outlet. The connecting inlet is connected to the opening of the first manifold section 101 on the corresponding side, and the connecting outlet is connected to the opening of the second manifold section 102 on the corresponding side, so as to realize the connection between the first manifold section 101 and the second manifold section 102, thereby realizing the connection between two adjacent heat exchange units 10.
[0054] In one embodiment, such as Figure 5 and Figure 7 As shown, the connector 220 includes a first connecting block 221 and a second connecting block 222 arranged coaxially and connected to each other. The first connecting block 221 and the second connecting pipe 230 are internally connected to form a connecting channel 2202. That is, both the first connecting block 221 and the second connecting block 222 have a first portion 2201 located between the first connecting pipe 210 and the second manifold section 102. In this way, the universality of the connector 220 composed of the first connecting block 221 and the second connecting block 222 for the heat exchanger 1 can be further improved.
[0055] Furthermore, the first connecting block 221 and the second connecting block 222 are connected as a single unit. This simplifies the production of the connector 220 and enhances its mechanical strength.
[0056] In one embodiment, such as Figure 6 , Figure 7 and Figure 11As shown, the connecting unit 20 also includes a fastener 223 that can be detachably connected to both the first connecting block 221 and the second connecting block 222. The first connecting block 221 and the second connecting block 222 are respectively provided with connecting holes along the first direction B. The fastener 223 passes through the connecting holes to fix the first connecting block 221 and the second connecting block 222. Adjacent heat exchange units 10 connected by the connecting unit 20 are detachably connected, thus facilitating subsequent disassembly, inspection, and maintenance of the heat exchanger 1. Schematic, the fastener 223 includes multiple bolts and nuts that match the bolts. Since the bolts and nuts are readily available, this reduces the production cost of the heat exchanger 1.
[0057] In one embodiment, the first connecting block 221 and the second connecting block 222 are stacked along a first direction. The connecting channel 2202 has a first side and a second side disposed opposite to each other along the first direction. The first connecting block 221 has a first clearance hole 2211 along the first direction, which is located on the first side of the connecting channel 2202 and communicates with it. The first connecting pipe 210 is inserted into the first clearance hole 2211. The second connecting block 222 has a second clearance hole 2221 along the first direction, which is located on the second side of the connecting channel 2202 and communicates with it. The second manifold section 102 is inserted into the second clearance hole 2221. This improves the sealing performance between the first connecting pipe 210 and the first connecting block 221, further preventing refrigerant leakage at the connection between the first connecting pipe 210 and the first connecting block 221.
[0058] In another embodiment, such as Figure 5 , Figure 7 As shown, the first connecting block 221 is located above the second connecting block 222. The first connecting block 221 has a first clearance hole 2211 along the first direction B. The first clearance hole 2211 is located above and communicates with the connecting channel 2202. The first connecting pipe 210 is inserted into the first clearance hole 2211. This improves the sealing between the first connecting pipe 210 and the first connecting block 221, further preventing refrigerant leakage at the connection point. (Illustrative example follows.) Figure 8 , Figure 9 , Figure 11 and Figure 12 As shown, the first clearance hole 2211 is a through hole with a circular cross-section, which can better accommodate the first connecting pipe 210 with a circular cross-section. In other embodiments, the first clearance hole can also be a through hole with a cross-section of other shapes, such as square or elliptical, as long as the first clearance hole can be sealed and connected to the first connecting pipe.
[0059] Furthermore, such as Figure 10 and Figure 11 As shown, the second connecting block 222 has a second clearance hole 2221 along the first direction B. The second clearance hole 2221 is located below the connecting channel 2202 and communicates with the connecting channel 2202. The second manifold section 102 is inserted into the second clearance hole 2221. In this way, the sealing performance between the second manifold section 102 and the second connecting block 222 can be improved, further preventing refrigerant leakage at the connection between the second manifold section 102 and the second connecting block 222.
[0060] In one embodiment, the inner diameter of the second clearance hole 2221 is larger than the inner diameter of the first clearance hole 2211. Thus, when the refrigerant flows in the connecting channel 2202, the change in the inner diameters of the second clearance hole 2221 and the first clearance hole 2211 causes a disturbance to the flow of the refrigerant, which helps to improve the uniformity of refrigerant distribution from the manifold section 100 to the flat tube.
[0061] It is understood that adjacent first manifold section 101 and second manifold section 102 are connected to form a single manifold. In this embodiment, the heat exchange tube 200 is U-shaped, and the two manifolds are arranged side by side in the width direction of the heat exchanger 1. The first part 2201 of the connector 220 has two parallel connecting channels 2202 inside, which are respectively connected to the two manifolds. Further, the first connecting block 221 has two first clearance holes 2211, and the second connecting block 222 also has two second clearance holes 2221, to form two parallel connecting channels 2202.
[0062] In one embodiment, see Figure 6 and Figure 7 The connecting unit 20 also includes a second connecting pipe 230 extending along the first direction B. The two ends of the second connecting pipe 230 are respectively connected to the connecting channel 2202 and the second manifold section 102, so as to further improve the adaptability of the connecting unit 20 to different manifold sections 100.
[0063] Furthermore, such as Figure 7 As shown, the top end of the second connecting pipe 230 is inserted into the second clearance hole 2221 to improve the sealing between the second connecting pipe 230 and the second connecting block 222. In this embodiment, the bottom end of the second connecting pipe 230 is sleeved on the outside of the top end of the second manifold section 102 to improve the sealing between the second connecting pipe 230 and the second manifold section 102 and prevent refrigerant leakage at the connection between the second connecting pipe 230 and the second manifold section 102; or, the top end of the second manifold section 102 is sleeved on the outside of the bottom end of the second connecting pipe 230, which can also improve the sealing between the second connecting pipe 230 and the second manifold section 102. This application does not limit this.
[0064] In one embodiment, such as Figure 5 , Figure 8 As shown, the bottom surface of the first connecting block 221 and the top surface of the second connecting block 222 are provided with a first connecting portion and a second connecting portion that fit together in an interlocking manner. One of the first connecting portion and the second connecting portion is a protrusion 2212, and the other is a recess 2222 that is sealed and connected to the protrusion 2212 in a second direction. In this way, the first connecting block 221 and the second connecting block 222 can be accurately positioned through the first connecting portion and the second connecting portion, improving assembly efficiency. In addition, the first connecting block 221 and the second connecting block 222 can also be interlocked through the first connecting portion and the second connecting portion, avoiding relative displacement between the first connecting block 221 and the second connecting block 222, making the connection between the first connecting block 221 and the second connecting block 222 more stable, and thus making the structure of the heat exchanger 1 more stable.
[0065] Indicative, such as Figure 9 and Figure 10 As shown, the first connecting portion of the first connecting block 221 is a protrusion 2212, and the second connecting portion of the second connecting block 222 is a recess 2222. In other embodiments, the first connecting portion of the first connecting block may also be a protrusion, in which case the second connecting portion of the second connecting block is a recess.
[0066] It is understandable that a sealing ring can also be provided between the protrusion 2212 and the recess 2222 to enhance the sealing between the bottom surface of the first connecting block 221 and the top surface of the second connecting block 222.
[0067] In one embodiment, the inner diameter of the second clearance hole 2221 is equal to the inner diameter of the first clearance hole 2211, and the inner diameter of the protrusion 2212 is greater than the inner diameter of the second clearance hole 2221. Thus, as the refrigerant flows within the connecting channel 2202, the multiple changes in the inner diameters of the first clearance hole 2211, the protrusion 2212, and the second clearance hole 2221 further disturb the refrigerant flow, which is more conducive to improving the uniformity of refrigerant distribution from the manifold section 100 to the flat tube.
[0068] In one embodiment, the first connecting block 221 has a first groove 2213 near the end face of the second connecting block, and the first groove 2213 extends circumferentially along the first connecting block 221. The second connecting block 222 has a second groove 2223 near the end face of the first connecting block, and the second groove 2223 extends circumferentially along the second connecting block 222, and the second groove 2223 corresponds to the first groove 2213. The connecting unit 20 also includes a sealing gasket 224, which is disposed between the first groove 2213 and the second groove 2223, and is used to abut against the respective walls of the first groove 2213 and the respective walls of the second groove 2223, so that the sealing gasket 224 forms a seal between the bottom surface of the first connecting block 221 and the top surface of the second connecting block 222, thereby effectively preventing the first connecting block 221 and the second connecting block 222 from being loosely connected.
[0069] Specifically, such as Figure 7 As shown, the bottom surface of the first connecting block 221 is provided with an upwardly recessed first groove 2213, which extends circumferentially along the first connecting block 221. The top surface of the second connecting block 222 is provided with a downwardly recessed second groove 2223, which extends circumferentially along the second connecting block 222, and the second groove 2223 corresponds to the first groove 2213.
[0070] In one embodiment, such as Figures 2 to 7 As shown, the heat exchange unit 10 also includes a heat exchange tube 200 extending along the length of the heat exchanger 1. The end of the heat exchange tube 200 passes through the manifold section 100 to connect the heat exchange tube 200 with the manifold section 100. There is a connection space 300 between the heat exchange tubes of two adjacent heat exchange units 10, and at least a portion of the connectors 220 are located within the connection space 300. It is understood that a fan is provided on one side of the heat exchange tube 200 to increase the heat exchange rate between the heat exchange tube 200 and the environment. Due to the presence of the connection unit 20, the distance between the second heat exchange tube 202 and the adjacent first heat exchange tube 201 is relatively large, and the air generated by the fan can directly escape from the connection space 300. The portion of the connectors 220 located within the connection space 300 can act as a windbreak, thereby improving the heat exchange efficiency of the heat exchanger 1.
[0071] Indicative, such as Figures 2 to 7As shown, each heat exchange unit 10 has at least two heat exchange tubes 200. All heat exchange tubes 200 are arranged sequentially at intervals in the first direction B, and the ends of all heat exchange tubes 200 are inserted into the manifold section 100 so that the heat exchange tubes 200 are connected to the manifold section 100. The heat exchange tube 200 located at the top of the heat exchange unit 10 is defined as the first heat exchange tube 201, and the heat exchange tube 200 located at the bottom of the heat exchange unit 10 is defined as the second heat exchange tube 202. There is a connection space 300 between the second heat exchange tube 202 in the heat exchange unit 10 located above the connection unit 20 and the first heat exchange tube 201 in the heat exchange unit 10 located below the connection unit 20. At least a portion of the connectors 220 are located within the connection space 300.
[0072] Furthermore, the heat exchanger 1 also includes a side plate 40, which is disposed in the connection space 300. In this way, the side plate 40 can not only protect the first heat exchange tube 201 and the second heat exchange tube, but also work together with the connector 220 located in the connection space 300 to act as a windbreak in the connection space 300, so as to improve the heat exchange efficiency of the heat exchanger 1.
[0073] In one embodiment, such as Figures 2 to 7 As shown, each manifold segment 100 is formed by connecting multiple coaxially arranged unit segments 110. The unit segment 110 at the top of each manifold segment 100 is defined as the first unit segment 1101, and the unit segment 110 at the bottom of each manifold segment 100 is defined as the second unit segment 1102. Each unit segment 110 includes a first segment 111 at the top and a second segment 112 at the bottom. The diameter of the first segment 111 is smaller than the diameter of the second segment 112, so that the first segment 111 of the unit segment 110 can be inserted into the second segment 112 of the adjacent unit segment 110. The two ends of the connecting unit 20 are respectively connected to the second segment 112 of the second unit segment 1102 and the first segment 111 of the first unit segment 1101 in the adjacent manifold segment 100. Understandably, the manifold section 100 is formed by stacking multiple unit sections 110 sequentially. Each unit section 110 is connected to the heat exchange tube 200. During welding in the brazing furnace, the heat exchange tube 200 and the manifold will settle, but the heat exchange tube 200 settles more severely than the manifold, making it impossible for them to settle synchronously. The first section 111 of the unit section 110 is inserted into the second section 112 of the adjacent unit section 110, providing expansion and contraction margin for the settlement of each unit section 110, so that the manifold and the heat exchange tube 200 settle synchronously, improving welding efficiency.
[0074] It is also understood that, as described above, when the connecting unit 20 is the first connecting pipe 210, the top end of the first connecting pipe 210 is sleeved on the outside of the second segment 112 of the second unit section pipe 1102, or the second segment 112 of the second unit section pipe 1102 is sleeved on the outside of the first connecting pipe 210; the bottom end of the first connecting pipe 210 is sleeved on the outside of the first segment 111 of the first unit section pipe 1101, or the first segment 111 of the first unit section pipe 1101 is sleeved on the outside of the first connecting pipe 210.
[0075] In one embodiment, the connecting unit 20 further includes a second connecting tube 230. As described above, the top end of the second connecting tube 230 is sleeved on the outside of the first segment 111 of the first unit tube 1101, or the first segment 111 of the first unit tube 1101 is sleeved on the outside of the second connecting tube 230.
[0076] In one embodiment, such as Figure 3 As shown, the connecting unit 20 is a first connecting pipe 210, and the first connecting pipe 210 is a reducer. The reducer has a first end and a second end that are relatively distributed in the vertical direction. The outer peripheral wall of the first end of the reducer is connected to the inner peripheral wall of the second section 112 of the second unit pipe 1102, and the inner peripheral wall of the second end of the reducer is sleeved on the outside of the first section 111 of the adjacent first unit pipe 1101. In this way, the reducer can connect the first section 111 and the second section 112 with different pipe diameters at the same time, making the production of the heat exchanger 1 simpler.
[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.
[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.
Claims
1. A heat exchanger, characterized in that, include: At least two heat exchange units (10) are arranged sequentially at intervals along a first direction, and each heat exchange unit (10) includes a manifold section (100) extending along the first direction. The connecting unit (20) is at least partially disposed between two adjacent manifold sections (100) along the first direction, and the two ends of the connecting unit (20) are respectively connected to the manifold section (100) on the corresponding side.
2. The heat exchanger according to claim 1, characterized in that, Two manifold sections (100) arranged adjacent to the connecting unit (20) are defined as the first manifold section (101) and the second manifold section (102), respectively. The connecting unit (20) is located between the first manifold section (101) and the second manifold section (102). The connecting unit (20) includes a first connecting pipe (210) extending along the first direction, the circumference of the first connecting pipe (210) is defined as the second direction, one end of the first connecting pipe (210) is sealed to the first manifold section (101) in the second direction, and the other end of the first connecting pipe (210) is sealed to the second manifold section (102) in the second direction.
3. The heat exchanger according to claim 2, characterized in that, The connection unit (20) further includes a connector (220), which has a first portion (2201) located between the first connecting pipe (210) and the second manifold section (102). The first portion (2201) has a connection channel (2202) inside, and the first connecting pipe (210) is connected to the second manifold section (102) through the connection channel (2202).
4. The heat exchanger according to claim 3, characterized in that, The connector (220) includes a first connecting block (221) and a second connecting block (222) arranged coaxially and connected to each other. The first connecting block (221) and the second connecting pipe (230) are internally connected to form the connecting channel (2202).
5. The heat exchanger according to claim 4, characterized in that, The first connecting block (221) and the second connecting block (222) are stacked along the first direction. The connecting channel (2202) has a first side and a second side that are arranged opposite to each other along the first direction. The first connecting block (221) is provided with a first clearance hole (2211) along the first direction. The first clearance hole (2211) is located on the first side of the connecting channel (2202) and communicates with the connecting channel (2202). The first connecting tube (210) is inserted into the first clearance hole (2211). The second connecting block (222) is provided with a second clearance hole (2221) along the first direction. The second clearance hole (2221) is located on the second side of the connecting channel (2202) and communicates with the connecting channel (2202). The second manifold section (102) is inserted into the second clearance hole (2221).
6. The heat exchanger according to claim 5, characterized in that, The first connecting block (221) and the second connecting block (222) are provided with a first connecting part and a second connecting part that are plugged in. One of the first connecting part and the second connecting part is a protrusion (2212), and the other is a recess (2222) that is sealed and connected to the protrusion (2212) in the second direction.
7. The heat exchanger according to claim 6, characterized in that, The inner diameter of the second clearance hole (2221) is larger than the inner diameter of the first clearance hole (2211); Alternatively, the inner diameter of the second clearance hole (2221) is equal to the inner diameter of the first clearance hole (2211), and the inner diameter of the protrusion (2212) is greater than the inner diameter of the second clearance hole (2221).
8. The heat exchanger according to claim 4, characterized in that, The connecting unit (20) further includes a second connecting pipe (230) extending along the first direction, with the two ends of the second connecting pipe (230) connected to the connecting channel (2202) and the second collecting pipe section (102), respectively.
9. The heat exchanger according to any one of claims 4 to 8, characterized in that, The first connecting block (221) has a first groove (2213) on its end face near the second connecting block. The first groove (2213) extends circumferentially along the first connecting block (221), and / or; The second connecting block (222) has a second groove (2223) on its end face near the first connecting block. The second groove (2223) extends circumferentially along the second connecting block (222), and the second groove (2223) corresponds to the first groove (2213). The connecting unit (20) further includes a sealing gasket (224), which is disposed in the first groove (2213) and the second groove (2223), and the first connecting block (221) and the second connecting block (222) are sealed and connected.
10. The heat exchanger according to claim 3, characterized in that, The heat exchange unit (10) further includes a heat exchange tube (200) extending along the length direction of the heat exchanger. The end of the heat exchange tube (200) passes through the manifold section (100) so that the heat exchange tube (200) is connected to the manifold section (100). There is a connection space (300) between the heat exchange tubes (200) of two adjacent heat exchange units (10), and at least part of the connector (220) is located in the connection space (300).
11. The heat exchanger according to claim 1, characterized in that, Each of the aforementioned manifold segments (100) is formed by stacking and connecting multiple coaxially arranged unit segments (110). The unit segment (110) at the top of each manifold segment (100) is defined as the first unit segment (1101), and the unit segment (110) at the bottom of each manifold segment (100) is defined as the second unit segment (1102). Each unit segment (110) includes a first segment (111) at the top and a second segment (1102) at the bottom. 112), the diameter of the first segment (111) is smaller than the diameter of the second segment (112) so that the first segment (111) of the unit tube (110) can be inserted into the second segment (112) of the adjacent unit tube (110); the two ends of the connecting unit (20) are respectively connected to the second segment (112) of the second unit tube (1102) and the first segment (111) of the first unit tube (1101) in the adjacent manifold segment (100).