Water distribution and collection assembly, coil heat exchanger, and heating, ventilation and air-conditioning apparatus

Abstract

A water distribution and collection assembly, a coil heat exchanger, and a heating, ventilation and air-conditioning apparatus. The water distribution and collection assembly comprises a housing, a plurality of water intake branch pipes and a plurality of water output branch pipes, wherein a water intake channel and a water output channel that are isolated from each other are formed in the housing; the plurality of water intake branch pipes are arranged spaced apart from each other; inlet ends of the water intake branch pipes are connected to the housing and are in communication with the water intake channel; the water intake branch pipes extend from the inlet ends to outlet ends in a direction away from the housing; the outlet ends of the water intake branch pipes are configured to be connected to water intake ends of coil pipes of the coil heat exchanger; the plurality of water output branch pipes are arranged spaced apart from each other; outlet ends of the water output branch pipes are connected to the housing and are in communication with the water output channel; the water output branch pipes extend from the inlet ends to the outlet ends in a direction away from the housing; and the inlet ends of the water output branch pipes are configured to be connected to water output ends of the coil pipes. The water distribution and collection assembly has a simple structure and fewer parts, and is convenient to assemble, so that the machining and assembly efficiency of the water distribution and collection assembly is improved, and the production cost is reduced.

Description

Water distribution components, coil heat exchangers and HVAC equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202410378114.3, filed on March 29, 2024, entitled “Distributed water collection assembly, coil heat exchanger and HVAC equipment,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field related to HVAC components, and in particular to a water distribution assembly, a coil heat exchanger and HVAC equipment. Background Art

[0004] Currently, the main water distribution and collection scheme for fan coil units is as follows: the main system's water inlet pipe is connected to a water distribution joint, allowing water to flow from the inlet pipe into the water distribution joint; the water distribution joint connects to the branch inlet pipes of each branch, allowing water to be diverted to each inlet branch pipe through the water distribution joint; each inlet branch pipe is connected to the heat exchange pipes of each branch, allowing water to flow from each branch pipe into the heat exchange pipes of the corresponding flow path; each outlet branch pipe is connected to the heat exchange pipes of each flow path and to the water collection joint, allowing water to flow from the heat exchange pipes through each outlet branch pipe and then be collected at the water collection joint; the water collection joint is connected to the main system's water outlet pipe, allowing water to flow through the water collection joint into the main system's water outlet pipe and return to the main system. The water distribution and collection components have a large number of parts, a complex structure, and low assembly efficiency. Summary of the Invention

[0005] The purpose of this application is to at least alleviate the problem of complex structure and low assembly efficiency of water distribution and collection components. This purpose is achieved through the following technical solutions:

[0006] The first aspect of the present application proposes a water distribution assembly, which is applied to a coil heat exchanger with fins. The water distribution assembly includes a shell, multiple water inlet branches and multiple water outlet branches, and the shell is formed with a water inlet channel and a water outlet channel that are isolated from each other; the multiple water inlet branches are arranged at intervals, the inlet ends of the water inlet branches are connected to the shell and communicated with the water inlet channel, the water inlet branches extend from the inlet end to the outlet end in a direction away from the shell, and the outlet ends of the water inlet branches are used to connect with the water inlet end of the coil of the coil heat exchanger; the multiple water outlet branches are arranged at intervals, the outlet ends of the water outlet branches are connected to the shell and communicated with the water outlet channel, the water outlet branches extend from the inlet end to the outlet end in a direction away from the shell, and the inlet ends of the water outlet branches are used to connect with the water outlet ends of the coil.

[0007] According to the water distribution and collection assembly of the present application, the water inlet channel is connected to the water inlet end of the coil through the water inlet branch pipe, and the water outlet channel is connected to the water outlet end of the coil through the water outlet branch pipe. In this way, water can flow from the water inlet channel through multiple water inlet branch pipes into the multiple coils, and then flow through the multiple coils and return to the water outlet channel through multiple water outlet branch pipes. By integrating the water inlet and water outlet channels within the housing, the water distribution and collection assembly has a simple structure, fewer parts, and is easy to assemble. This improves the processing and assembly efficiency of the water distribution and collection assembly and reduces production costs.

[0008] In addition, the water distribution assembly according to the present application may also have the following additional technical features:

[0009] In some embodiments of the present application, a plurality of first communicating ports and a plurality of second communicating ports are provided on the first side wall of the shell, the plurality of first communicating ports correspond to the positions of the water inlet channel and are respectively connected to the water inlet channel, the plurality of second communicating ports correspond to the positions of the water outlet channel and are respectively connected to the water outlet channel, the inlet end of the water inlet branch pipe is sealedly connected to the first communicating port, and the inlet end of the water outlet branch pipe is sealedly connected to the second communicating port.

[0010] In some embodiments of the present application, the shell includes a shell body and a sealing plate, the sealing plate forms the first side wall, the shell body is provided with a first opening on the side facing the heat exchange component, the shell body has a first groove and a second groove isolated from each other, the orientation of the notch of the first groove and the orientation of the notch of the second groove are consistent with the orientation of the first opening, the sealing plate is sealed to the first opening, and together with the first groove forms the water inlet channel, and together with the second groove forms the water outlet channel.

[0011] In some embodiments of the present application, the shell body is an integral structure, and / or the sealing plate is an integral structure.

[0012] In some embodiments of the present application, the water distribution assembly further includes a sealing gasket, which is sealingly disposed between the sealing plate and the shell body.

[0013] In some embodiments of the present application, the sealing gasket covers the first opening, and the sealing gasket is provided with a plurality of first through-holes and a plurality of second through-holes, the first through-holes correspond one-to-one with the first connecting port and are coaxially arranged, the second through-holes correspond one-to-one with the second connecting port and are coaxially arranged, the inlet end of the water inlet branch pipe passes through the first connecting port and is sealedly connected to the first through-hole, and the outlet end of the water outlet branch pipe passes through the second connecting port and is sealedly connected to the second through-hole.

[0014] In some embodiments of the present application, the water inlet branch pipe and / or the water outlet branch pipe are connected to the sealing gasket and the sealing plate by expansion connection.

[0015] In some embodiments of the present application, a first water return structure is further provided in the housing, wherein the first water return structure is provided with a reflux channel, and the reflux channel, the water inlet channel, and the water outlet channel are isolated from each other;

[0016] The coil heat exchanger also includes a plurality of return branches, one end of each return branch is connected to the shell and communicates with the return channel, and each return channel is connected to at least two return branches, and the other end of each return branch is located outside the shell and extends away from the shell.

[0017] In some embodiments of the present application, the water inlet channel and the water outlet channel are respectively arranged on both sides of the first water return structure.

[0018] In some embodiments of the present application, a accommodating cavity is formed in the shell, and the first water return structure is connected to the inner wall surface of the shell, and divides the accommodating cavity into the water outlet channel and the water inlet channel.

[0019] In some embodiments of the present application, the first water return structure includes an isolator, which is connected to the inner wall of the shell. A reflux groove is provided in the isolator, and the reflux groove cooperates with the inner wall of the shell to form the reflux channel.

[0020] In some embodiments of the present application, the isolation member includes a plurality of protrusions arranged at intervals, adjacent protrusions are connected by partitions, the protrusions and the partitions are both connected to the inner wall surface of the shell, and the reflux channel is arranged on the protrusions.

[0021] In some embodiments of the present application, the first water return structure is an integrated structure;

[0022] And / or, the first water return structure and the shell are an integrally formed structure or a split assembly structure.

[0023] In some embodiments of the present application, the water distribution assembly further includes an inlet joint and an outlet joint, both of which are connected to the shell body, the inlet joint is connected to the water inlet channel, and the outlet joint is connected to the water outlet channel.

[0024] In some embodiments of the present application, the water inlet connector and the shell body are an integral structure;

[0025] And / or, the water outlet joint and the shell body are an integral structure.

[0026] In some embodiments of the present application, the water distribution assembly further includes an exhaust assembly, the exhaust assembly is in communication with the water outlet channel, and the water outlet connector and / or the housing are connected to the exhaust assembly;

[0027] And / or, the water distribution and collection assembly further includes a drainage assembly, the drainage assembly is communicated with the water inlet channel, and the drainage assembly is connected to the water inlet joint and / or the shell.

[0028] The second aspect of the application proposes a coil heat exchanger, including a heat exchange component and a water distribution component proposed in this application or any embodiment of this application; the heat exchange component includes multiple coils and fins, each coil has an inlet end and an outlet end, the inlet end is connected and communicated with the outlet end of the inlet branch pipe, the outlet end is connected and communicated with the inlet end of the outlet branch pipe, and the fins are connected to the coil.

[0029] In addition, the coil heat exchanger according to the present application may also have the following additional technical features:

[0030] In some embodiments of the present application, the heat exchange assembly further includes a shell, the shell is connected to one end of the shell, and the water outlet branch pipe and the water inlet branch pipe are both arranged on a first side wall of the shell facing the shell.

[0031] In some embodiments of the present application, an end plate is provided at one end of the outer shell, the shell is provided on a side of the end plate facing away from the outer shell, and the water inlet end and the outlet end are both provided through the end plate.

[0032] In some embodiments of the present application, a first water return structure is further provided in the housing, wherein the first water return structure is provided with a reflux channel, and the reflux channel, the water inlet channel, and the water outlet channel are isolated from each other;

[0033] The water distribution and collection assembly further includes a first return branch pipe and a second return branch pipe, one end of the first return branch pipe and one end of the second return branch pipe are both connected to the shell and communicated through the return channel;

[0034] At least one of the multiple coils is a first coil, and the first coil includes a first heat exchange tube and a second heat exchange tube. The outlet of the first heat exchange tube is connected to the other end of the first return branch, and the inlet of the second heat exchange tube is connected to the other end of the second return branch, so that the first heat exchange tube and the second heat exchange tube are connected in series.

[0035] A third aspect of the present application proposes a HVAC device, comprising a fan and a coil heat exchanger proposed in the present application or any embodiment of the present application, wherein the fan is arranged on one side of the coil heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic diagram of a water distribution assembly according to some embodiments of the present application;

[0037] FIG2 is a schematic structural diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0038] FIG3 is a schematic diagram of the split body of FIG2 ;

[0039] FIG4 is a schematic diagram of FIG3 from another perspective;

[0040] FIG5 is a schematic diagram of a partial flow path of the coil heat exchanger shown in FIG4 ;

[0041] FIG6 is a split schematic diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0042] FIG7 is a schematic diagram of a partial flow path of the coil heat exchanger shown in FIG6 ;

[0043] FIG8 is a split schematic diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0044] FIG9 is a schematic diagram showing the flow path of the coil heat exchanger shown in FIG8 ;

[0045] FIG10 is a split schematic diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0046] FIG11 is a schematic diagram showing the flow path of the coil heat exchanger shown in FIG10 ;

[0047] FIG12 is a split schematic diagram of a coil heat exchanger provided in some embodiments of the present application;

[0048] FIG13 is a schematic structural diagram of a water distribution assembly provided in some embodiments of the present application;

[0049] FIG14 is a schematic structural diagram of a water distribution assembly provided in some embodiments of the present application;

[0050] FIG15 is a schematic diagram of the assembly of a sealing plate, an inlet branch pipe, an outlet branch pipe, and a return branch pipe of a water distribution and collection assembly provided in some embodiments of the present application;

[0051] FIG16 is a partial enlarged view of FIG15;

[0052] FIG17 is a schematic diagram of an interference seal between a sealing plate and a water inlet branch pipe of a water distribution and collection assembly provided in some embodiments of the present application;

[0053] FIG18 is a schematic diagram of a coil heat exchanger provided by some embodiments of the present application, wherein the sealing plate and the water inlet branch pipe are sealed by a sealing ring;

[0054] FIG19 is a schematic diagram of a coil heat exchanger provided by some embodiments of the present application, wherein a sealing plate and an inlet branch pipe, an outlet branch pipe, and a return branch pipe are sealed via a sealing gasket;

[0055] FIG20 is an enlarged view of the T portion of FIG19;

[0056] FIG21 is a schematic diagram of the split water collection assembly shown in FIG19;

[0057] FIG22 is a schematic diagram of the shell body, water inlet connector, and water outlet connector of a water distribution and collection assembly according to some embodiments of the present application;

[0058] FIG23 is a schematic diagram of FIG22 from another perspective;

[0059] FIG24 is a partial cross-sectional view of the assembled shell body, water inlet connector, and water outlet connector of the water distribution and collection assembly shown in FIG22 ;

[0060] FIG25 is a schematic diagram of the shell body, water inlet connector, and water outlet connector of a water distribution and collection assembly provided in some embodiments of the present application;

[0061] FIG26 is a schematic diagram of FIG25 from another perspective;

[0062] FIG27 is a schematic diagram of the shell body, the first water return structure, the water inlet joint, and the water outlet joint of the water distribution and collection assembly provided in some embodiments of the present application;

[0063] FIG28 is a schematic diagram of FIG27 from another perspective;

[0064] FIG29 is a schematic diagram of the assembly of a coil heat exchanger and a fan according to some embodiments of the present application;

[0065] FIG30 is a schematic diagram of the assembly of a coil heat exchanger and a fan according to other embodiments of the present application.

[0066] The figures are marked as follows: 10, coil heat exchanger; 100, water distribution assembly; 101, water inlet channel; 102, water outlet channel; 110, shell; 111, shell body; 1111, first opening; 1112, top plate; 1113, circumferential frame; 1114, water inlet through hole; 1115, water outlet through hole; 1116, sealing connection; 1117, accommodating cavity; 112, sealing plate; 1121, flange; 1122, sealing connection surface; 1123, solder; 1124, sealing ring; 113, first groove; 114, second groove; 115, first connecting port; 116, second connecting port; 117, third connecting port 120, first water return structure; 121, reflux channel; 1211, first reflux channel; 1212, second reflux channel; 122, bump; 123, partition; 124, spacer; 1241, reflux groove; 130, sealing gasket; 131, first through-hole; 132, second through-hole; 133, third through-hole; 140, water inlet connector; 150, water outlet connector; 160, exhaust assembly; 170, drainage assembly; 180, semicircular pipe; 200, heat exchange assembly; 210, coil; 201, first long U-shaped tube; 202, second long U-shaped tube; 203, third long U-shaped tube; 211, water inlet; 212, water outlet; 220, first coil; 221, first heat exchange tube; 222, second heat exchange tube; 230, outer shell; 231, air outlet; 232, end plate; 240, fin; 310, water inlet branch; 320, water outlet branch; 330, return branch; 331, first return branch; 332, second return branch; 20, fan; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0067] The following describes exemplary embodiments of the present application in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0068] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0069] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0070] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0071] As shown in Figures 1 to 30 , according to an embodiment of the present application, a coil heat exchanger 10 is provided, comprising a manifold assembly 100 and a heat exchange assembly 200. The heat exchange assembly 200 comprises a plurality of coils 210, each of which has a water inlet 211 and a water outlet 212. The nozzle on the water inlet 211 is the water inlet, and the nozzle on the water outlet 212 is the water outlet. The manifold assembly 100 is connected to the water inlet 211 of each coil 210, and the manifold assembly 100 is also connected to the water outlet 212 of each coil 210.

[0072] The coil heat exchanger 10 is usually used in conjunction with a fan 20. The fan 20 can be set on one side of the coil heat exchanger 10. The fan 20 is used to drive the air flow so that the air flow flows through the coil heat exchanger 10. When the air flow flows through the coil heat exchanger 10, the air flow exchanges heat with the water in the coil heat exchanger 10.

[0073] The heat exchange assembly 200 is the main component for performing heat exchange. Specifically, the heat exchange assembly 200 performs heat exchange between water flowing within the heat exchange assembly 200 and a medium such as air outside the heat exchange assembly 200. The multiple coils 210 refer to two or more coils 210. Each coil 210 can be understood as a set of pipes flowing from the water inlet channel 101 to the water outlet channel 102. Each coil 210 can have one, two, or more water inlets, and each set of coils 210 can also have one, two, or more water outlets. For example, in some embodiments, at least one coil 210 has a single water inlet pipe and multiple water outlet pipes, and the multiple outlet pipes are all connected to and communicate with the water inlet pipe. Among them, each coil 210 has at least one reflux. Simply put, each coil 210 includes at least two heat exchange sections, and the water flow directions of the two heat exchange sections are roughly opposite. More specifically, it can be understood that each coil 210 simply includes at least one long U-shaped tube.

[0074] The water distribution assembly 100 provided in this embodiment includes a shell 110, multiple water inlet branches 310 and multiple water outlet branches 320. The shell 110 is formed with a water inlet channel 101 and a water outlet channel 102 that are isolated from each other; the multiple water inlet branches 310 are arranged at intervals, the inlet ends of the water inlet branches 310 are connected to the shell 110 and communicate with the water inlet channels 101, and the water inlet branches 310 are oriented from the inlet end to the outlet end in a direction away from the shell 110. Extension, the outlet end of the water inlet branch pipe 310 is used to be connected to the water inlet end 211 of the coil 210 of the coil heat exchanger 10; multiple water outlet branch pipes 320 are arranged at intervals, and the outlet end of the water outlet branch pipe 320 is connected to the shell 110 and communicated with the water outlet channel 102. The water outlet branch pipe 320 extends from the inlet end to the outlet end in a direction away from the shell 110, and the inlet end of the water outlet branch pipe 320 is used to be connected to the water outlet end 212 of the coil 210.

[0075] The water inlet of each coil 210 is connected to the water inlet channel 101 of the water distribution and collection assembly 100 via the water inlet branch pipe 310, and the water outlet of each coil 210 is connected to the water outlet channel 102 of the water distribution and collection assembly 100 via the water outlet branch pipe 320. In some implementations, the water outlet ends 212 of the multiple coils 210 may be connected and connected to the water outlet branch pipe 320 in a one-to-one correspondence, and the water inlet ends 211 of the multiple coils 210 may be connected and connected to the water inlet branch pipe 310 in a one-to-one correspondence.

[0076] The housing 110 is provided with a total water inlet communicating with the water inlet channel 101, and a total water outlet communicating with the water outlet channel 102. The total water inlet and the total water outlet are located on the same side of the housing 110. For example, the total water outlet and the total water inlet can be provided on the side of the housing 110 facing away from the heat exchange assembly 200, and the water inlet branch pipe 310 and the water outlet branch pipe 320 are both provided on the side of the housing 110 facing the heat exchange assembly 200. A water inlet connector 140 can be provided at the total water inlet, and a water outlet connector 150 can be provided at the total water outlet. Among them, the water inlet joint 140 can be connected to the part of the water distribution assembly 100 that forms the water inlet channel 101, and is communicated with the water inlet channel 101. The water outlet of the heat exchange water supply system is connected to the water inlet joint 140, and water is supplied to the water inlet channel 101 through the water inlet joint 140; the water outlet joint 150 can be connected to the part of the water distribution assembly 100 that forms the water outlet channel 102, and is communicated with the water outlet channel 102. The water inlet of the heat exchange water supply system is connected to the water outlet joint 150, and the water flow in the heat exchange assembly 200 flows back to the heat exchange water supply system through the water outlet joint 150. The heat exchange water supply system is used to heat or cool the water flow. When the heat exchange component 200 is used to provide heating for the environment, the heat exchange water supply system heats the water flow to provide hot water to the heat exchange component 200. The heat exchange water supply system can specifically be provided with a heating device, such as a gas heating device, an electric heating pipe, etc., to heat the water flow; when the heat exchange component 200 is used to provide cooling for the environment, the heat exchange water supply system can cool the water flow. The heat exchange water supply system can specifically be provided with a cooling device, such as an evaporator, etc., to cool the water flow.

[0077] The water distribution assembly 100 can be provided with multiple first connecting ports 115 corresponding to the water inlet channel 101. The multiple first connecting ports 115 are connected to the inlet end of the water inlet branch pipe 310. Specifically, one first connecting port 115 can be connected to the inlet end of one water inlet branch pipe 310. Specifically, the inlet end of the water inlet branch pipe 310 can be plugged and sealed with the first connecting port 115. For example, the inlet end of the water inlet branch pipe 310 can be inserted into the first connecting port 115 and sealed with the first connecting port 115. The water distribution and collection assembly 100 may be provided with a plurality of second communication ports 116 corresponding to the water outlet channel 102. The plurality of second communication ports 116 are connected to the outlet end of the water outlet branch pipe 320. Specifically, one second communication port 116 may be connected to the outlet end of the water outlet branch pipe 320. Specifically, the outlet end of the water outlet branch pipe 320 may be plugged and sealed with the second communication port 116. For example, the outlet end of the water outlet branch pipe 320 may be inserted into the second communication port 116 and sealed with the second communication port 116. After the water used for heat exchange flows into the water inlet channel 101, it is divided into each of the water outlet branch pipes 320 through the water inlet channel 101 and flows into the water inlet of the water inlet end 211 of the coil 210 through the water outlet branch pipes 320. Then, after flowing through each of the coils 210, it flows out through the outlet of the water outlet end 212 of each coil 210 and the return branch, and is then combined into the water outlet channel 102 and flows out through the water outlet channel 102. The water exchanges heat with the air when flowing through each coil 210 .

[0078] According to the water distribution and collection assembly 100 and coil heat exchanger 10 of the present application, the water inlet channel 101 is connected to the water inlet end 211 of the coil 210 via the water inlet branch pipe 310, and the water outlet channel 102 is connected to the water outlet end 212 of the coil 210 via the water outlet branch pipe 320. In this way, water can flow from the water inlet channel 101 through the multiple water inlet branch pipes 310 into the multiple coils 210, and after flowing through the multiple coils 210, it can flow back to the water outlet channel 102 through the multiple water outlet branch pipes 320. By integrating the water inlet channel 101 and the water outlet channel 102 within the housing 110, the water distribution and collection assembly 100 has a simple structure, fewer parts, and is easy to assemble, thereby improving the processing and assembly efficiency of the water distribution and collection assembly 100 and reducing production costs.

[0079] In some technologies, the coil heat exchanger is connected to multiple branch pipes through a water distribution joint, and the multiple branch pipes are connected to the water inlet of the heat exchange tube. At the same time, the water collection joint is connected to the multiple branch pipes, and the heat exchange tube is connected to the water collection joint through the branch pipe to realize the collection and distribution of water in multiple heat exchange tubes. The water diversion joint, water collection joint, and branch pipes are independent components. Therefore, assembly is required between the water diversion joint and the branch pipes to which it is connected, between the water outlet structure and the branch pipes to which it is connected, between the branch pipes and the inlet of the heat exchange tubes, and between the branch pipes and the outlet of the heat exchange tubes. This results in a large number of parts, and the structural assembly process is cumbersome, time-consuming, and labor-intensive, significantly impacting the production cost of the coil heat exchanger. Furthermore, the water inlet assembly (the water diversion joint and the corresponding branch pipes form the water inlet assembly) and the water outlet assembly (the water collection joint and the corresponding branch pipes form the water outlet assembly) are welded and assembled separately, making them susceptible to deformation. Therefore, additional mounting plates are required for securing them. The water diversion joint and water collection joint are typically disc-shaped, which is smaller than the layout range of the inlets and outlets of multiple heat exchange tubes. Therefore, the branch pipes are mostly long, curved branches that occupy a large amount of space. Furthermore, due to the large number of dispersed parts, the water diversion and collection assembly occupies a large amount of ineffective space, resulting in a cluttered and aesthetically pleasing design that is not conducive to the integrated design of the coil heat exchanger. The water flowing into the heat exchange tube needs to flow through the bent branch pipe before entering the heat exchange tube after flowing out of the water collecting joint, and the water flowing out of the heat exchange tube also needs to pass through the bent branch pipe before flowing back. The heat exchange component has a long pipe path and large water resistance.

[0080] The water distribution and collection assembly 100 of this embodiment integrates the water inlet channel 101 and the water outlet channel 102, eliminating the need for separate, separate water distribution and collection joints. This reduces the number of parts and prevents deformation of the components, facilitating an orderly arrangement of the water distribution and collection assembly 100, reducing component clutter and ineffective space occupied by parts, and improving the integration and aesthetics of the coil heat exchanger 10. Furthermore, the housing 110 of the water distribution and collection assembly 100 of this embodiment can roughly match the end face of the heat exchange assembly 200 and be disposed at one end of the heat exchange assembly 200, allowing the water distribution and collection assembly 100 to cover the water inlet ends 211 and water outlet ends 212 of all coils 210. The water inlet branch pipe 310 and the water outlet branch pipe 320 can be directly connected to the water inlet ends 211 and water outlet ends 212 of the coils 210. The water inlet branch pipe 310 and the water outlet branch pipe 320 can be straight pipes, resulting in a simple structure, easy assembly, a shorter water flow path, and reduced water resistance, which helps improve heat exchange efficiency.

[0081] In some embodiments, fins 240 may be provided on the outside of the coil 210 of the heat exchange assembly 200. In other words, the coil heat exchanger 10 may be a fin-tube heat exchanger. The coil 210 exchanges heat with the airflow through the fins 240, thereby improving the heat exchange efficiency of the heat exchanger. The fins 240 may be connected to the coil 210 through expansion joints, welding, or other methods. In some implementations, the fins 240 are provided with mounting holes, and the coil 210 is inserted into the mounting holes so that the fins 240 are sleeved and connected to the coil 210. There may be multiple fins 240, and the multiple fins 240 may be arranged at intervals. For example, the multiple fins 240 may be arranged at intervals along the first direction X on the coil 210.

[0082] Optionally, the heat exchange assembly 200 may further include a housing 230, with the plurality of coils 210 disposed within the housing 230. An air inlet is disposed on one side of the housing 230 (defined as a first side for ease of description), and an air outlet 231 is disposed on a side of the housing 230 opposite the air inlet (defined as a second side for ease of description). The water distribution assembly 100 may be disposed at one end of the housing 230.

[0083] It should be noted that the first side surface can be partially hollowed out to form an air inlet, or the first side surface can be completely hollowed out, that is, the housing 230 does not have a sidewall on the first side surface to form an air inlet; the second side surface can be partially hollowed out to form an air outlet 231, or the second side surface can be completely hollowed out, that is, the housing 230 does not have a sidewall on the second side surface to form an air outlet 231. In Figures 29 and 30, the second side surface is completely hollowed out to form the air outlet 231. To simplify the drawings, Figures 29 and 30 only show the actual structure of the coil heat exchanger 10 at a partial position on the second side surface, and do not illustrate the entire internal structure of the coil heat exchanger.

[0084] The housing 230 may be a substantially rectangular parallelepiped structure, and the water distribution assembly 100 may be disposed at one end of the housing 230 in the longitudinal direction. The air inlet and the air outlet 231 may also be disposed on two adjacent side surfaces of the housing 230 .

[0085] In this embodiment, the water inlet branch pipe 310 and the water outlet branch pipe 320 of the water distribution and collection assembly 100 can be arranged on the same side wall of the shell 110. For the convenience of description, the side wall of the shell 110 where the water outlet branch pipe 320 and the water inlet branch pipe 310 are arranged is defined as the first side wall.

[0086] Specifically, in one implementation, a plurality of first communicating ports 115 and a plurality of second communicating ports 116 are provided on the first side wall of the shell 110, the plurality of first communicating ports 115 correspond to the positions of the water inlet channel 101 and are respectively connected to the water inlet channel 101, the plurality of second communicating ports 116 correspond to the positions of the water outlet channel 102 and are respectively connected to the water outlet channel 102, the inlet end of the water inlet branch pipe 310 is sealedly connected to the first communicating port 115, and the inlet end of the water outlet branch pipe 320 is sealedly connected to the second communicating port 116.

[0087] The plurality of first communication openings 115 can be spaced apart, each first communication opening 115 correspondingly and hermetically connected to the inlet end of the water inlet branch pipe 310 and communicating with the water inlet channel 101. In other words, the inlet ends of all water inlet branch pipes 310 can be connected to all first communication openings 115 in a one-to-one correspondence, and the circumferential sidewalls of the inlet ends of the water inlet branch pipes 310 are sealedly connected to the circumferential walls of the first communication openings 115 to prevent water leakage between the inlet ends and the first communication openings 115. At the same time, the inlet ends communicate with the water inlet channel 101. The plurality of second communication openings 116 can be spaced apart, each second communication opening 116 correspondingly and hermetically connected to the outlet end of the water outlet branch pipe 320 and communicating with the water outlet channel 102. That is to say, the outlet ends of all the water outlet branches 320 can be connected to all the second connecting ports 116 respectively, and the circumferential side walls of the outlet ends are sealed with the circumferential walls of the second connecting ports 116 to prevent water from leaking between the outlet ends and the second connecting ports 116. At the same time, the outlet ends are connected to the water outlet channel 102.

[0088] The shell 110 of this embodiment may be substantially rectangular or elliptical, which matches the end of the heat exchange assembly 200 .

[0089] In some implementations, the first sidewall may be the sidewall of the housing 110 facing the outer shell 230, and the first sidewall may be partially hollowed out to form the first communication port 115 and the second communication port 116. Optionally, the inlet end of the water inlet branch pipe 310 may be inserted into the corresponding first communication port 115 and sealed with the circumferential inner wall of the first communication port 115. Optionally, the outlet end of the water outlet branch pipe 320 may be inserted into the corresponding second communication port 116 and sealed with the circumferential inner wall of the second communication port 116.

[0090] The shell 110 can be an integrally formed structure, a structure connected as one body, or a detachable sealed connection structure. In some embodiments, the shell 110 includes a shell body 111 and a sealing plate 112. A first opening 1111 is provided on one side of the shell body 111. A first groove 113 and a second groove 114 are provided on the shell body 111, which are isolated from each other. The notches of the first groove 113 and the second groove 114 are both oriented in the same direction as the first opening 1111. The sealing plate 112 is sealed to the first opening 1111 and encloses the first groove 113 to form the water inlet channel 101, and encloses the second groove 114 to form the water outlet channel 102. The sealing plate 112 is located on the side of the shell body 111 facing the heat exchange component 200, that is, the side facing the outer shell 230. In other words, the sealing plate 112 is the first side wall of the shell 110 facing the heat exchange component 200.

[0091] The sealing plate 112 can be fixedly connected to the housing 230 of the heat exchange assembly 200. Specifically, in one implementation, as shown in Figures 2 and 3, an end plate 232 can be provided at one end of the housing 230 connected to the sealing plate 112. Because the upper water distribution assembly 100 assumes the important function of water flow distribution, its sealing and pressure resistance requirements are relatively high. The housing 230 is provided with an end plate 232. The forces caused by shaking, falling, and impact during transportation, handling, and installation of the entire machine can be borne by the end plate 232 and will not be transmitted to the water distribution assembly 100, thereby maintaining the sealing effect and pressure bearing capacity of the water distribution assembly 100. It should be noted that the coil 210 passes through the end plate 232 of the housing 230. Specifically, the end plate 232 and the coil 210 can be expanded. The coil 210 and the end plate 232 of the housing 110 can be non-sealed structures. The end plate 232 is connected to other structural components of the entire machine to play a role in structural fixation. The end plate 232 of the housing 230 and the housing 230 may be an integral structure, or may be a separate assembly structure.

[0092] Optionally, flanges 1121 may be provided on both sides of the sealing plate 112 along the width direction (refer to the second direction Y) to improve the strength of the sealing plate 112. Flanges 1121 may also be provided on both sides of the end plate 232 along the width direction to improve the strength of the end plate 232.

[0093] Among them, the sealing plate 112 can be an integrally formed plate structure, and the shell body 111 can also be an integrally formed structure. The shell body 111 and the sealing plate 112 can be connected as a whole by welding or the like, or can be fixedly connected by screws or the like. It should be noted that, no matter which connection method is used, a seal should be formed between the sealing plate 112 and the shell body 111 so that the water inlet channel 101 and the water outlet channel 102 can be independent of each other and will not leak. Specifically, this can be achieved by welding sealing, expansion sealing, glue sealing, rubber gasket (sealing ring) sealing, etc. The first connecting port 115 on the sealing plate 112 and the water inlet branch pipe 310 can be connected by welding, sealing connection with a sealing ring 1124, glue sealing connection, expansion sealing connection, etc. The second connecting port 116 on the sealing plate 112 and the water outlet branch pipe 320 can also be connected by welding, sealing connection with a sealing ring 1124, glue sealing connection, expansion sealing connection, etc.

[0094] In some embodiments, the water distribution assembly 100 further includes a sealing gasket 130 , which is sealingly disposed between the sealing plate 112 and the housing 110 .

[0095] In this embodiment, the sealing connection between the water outlet branch pipe 320, the water inlet branch pipe 310 and the sealing plate 112 can be in various forms, and several sealing solutions are specifically introduced below.

[0096] In some implementations, as shown in Figures 15 and 16, the sealing plate 112 can be made of metal, and the water inlet branch pipe 310 and the water outlet branch pipe 320 are also made of metal. The water outlet branch pipe 320 can be welded and connected to the first connecting port 115 of the sealing plate 112, and the water outlet branch pipe 320 can be welded and sealed with the second connecting port 116 of the sealing plate 112. Specifically, the sealing plate 112 can form a raised ring at the position corresponding to the first connecting port 115 and the second connecting port 116, and the inner wall surface of the raised ring is the sealing connection surface 1122. The sealing connection surface 1122 is sealed and connected to the water inlet branch pipe 310 or the water outlet branch pipe 320 through solder 1123. The specific welding method can be flame welding, furnace welding or high-frequency welding, etc.

[0097] In some implementations, as shown in Figure 17, the sealing plate 112 has an interference fit with the water inlet branch 310, and the sealing plate 112 has an interference fit with the water outlet branch 320. Specifically, the inner diameter of the first connecting port 115 of the sealing plate 112 (that is, the diameter corresponding to the contact surface between the first connecting port 115 and the water inlet branch 310) is less than or equal to the inlet end of the water inlet branch 310 after expansion, and the inner diameter of the second connecting port 116 of the sealing plate 112 (that is, the diameter corresponding to the contact surface between the second connecting port 116 and the water outlet branch 320) is less than or equal to the outer diameter of the outlet end of the water outlet branch 320 after expansion, forming an interference connection to play a sealing role; in this expansion scheme, the thickness of the sealing plate 112 can be greater than or equal to 5 mm, and the inner wall surface of the first connecting port 115 and the inner wall surface of the second connecting port can be provided with a sealing groove. The material of the sealing plate 112 can be metal, ceramic, glass, plastic, rubber, silicone, or a composite material of the above materials. The inlet branch pipe 310 and the outlet branch pipe 320 are typically made of metal pipes to improve heat exchange efficiency. Specifically, the sealing plate 112 forms a raised ring at the positions corresponding to the first communication port 115 and the second communication port 116. The inner wall surface of the raised ring serves as a sealing connection surface 1122, which forms an interference fit with the inlet branch pipe 310 or the outlet branch pipe 320.

[0098] In some implementations, as shown in Figure 15, glue can also be applied between the inner side of the first connecting port 115 of the sealing plate 112 and the outer peripheral wall of the water inlet branch 310, and glue can also be applied between the inner side of the second connecting port 116 and the outer peripheral wall of the water outlet branch 320. The water inlet branch 310 and the water outlet branch 320 can be connected to the sealing plate 112 by welding or expansion. The glue is attached between the outer wall of the water inlet branch 310 and the inner side of the first connecting port 115 of the sealing plate 112, as well as between the outer wall of the water outlet branch 320 and the inner side of the second connecting port 116 of the sealing plate 112, to play a sealing role.

[0099] In some implementations, as shown in FIG18 , a sealing ring 1124, such as an O-ring, is placed between the inner side of the first communication opening 115 of the sealing plate 112 and the outer peripheral wall of the water inlet branch pipe 310, and between the inner side of the second communication opening 116 and the outer peripheral wall of the water outlet branch pipe 320. That is, the sealing ring 1124 is placed inside the contact surface between the sealing plate 112 and the outer wall of the water inlet branch pipe 310, and the sealing ring 1124 is placed inside the contact surface between the sealing plate 112 and the outer wall of the water outlet branch pipe 320. After the water inlet branch pipe 310 and the water outlet branch pipe 320 are expanded, the sealing ring 1124 is squeezed between the outer walls of the water inlet branch pipe 310 and the outer walls of the water outlet branch pipe 320 and the inner wall of the communication opening of the sealing plate 112, thereby providing a seal. The sealing ring 1124 may be made of rubber or silicone.

[0100] In some implementations, as shown in Figures 19 to 21, the water distribution assembly 100 further includes a sealing gasket 130, which is sealingly disposed between the sealing plate 112 and the shell 110, and covers the first opening 1111. The sealing gasket 130 is provided with a plurality of first through-holes 131 corresponding to the position of the water inlet channel 101, and the sealing gasket 130 is provided with a plurality of second through-holes 132 corresponding to the position of the water outlet channel 102. The plurality of first through-holes 131 correspond one-to-one to the plurality of first communication ports 115 and are coaxially arranged. The plurality of water inlet branch pipes 310 can pass through the first communication ports 115 one-to-one and be sealedly connected to the first through-holes 131. The plurality of second through-holes 132 correspond one-to-one to the plurality of second communication ports 116 and are coaxially arranged. The plurality of water outlet branch pipes 320 can pass through the second communication ports 116 one-to-one and be sealedly connected to the second communication ports 116.

[0101] Among them, the water inlet branch pipe 310, the first connecting port 115 and the first through port 131 may not be in a one-to-one correspondence, as long as they can be connected and sealed; the water outlet branch pipe 320, the second connecting port 116 and the second through port 132 may not be in a one-to-one correspondence, as long as they can be connected and sealed. The sealing gasket 130 is made of rubber, silicone or other materials. During assembly, there is a certain gap between the first communication port 115 of the sealing plate 112 and the contact surface of the water inlet branch pipe 310, and between the second communication port 116 of the sealing plate 112 and the contact surface of the water outlet branch pipe 320. The sealing gasket 130 is sleeved on the water inlet branch pipe 310 and the water outlet end 212. When the shell body 111 and the sealing plate 112 are assembled, the fastening force between the shell body 111 and the sealing plate 112 squeezes the sealing gasket 130 between the two, so that part of the sealing gasket 130 material is squeezed into the gap between the water inlet branch pipe 310 and the first communication port 115 of the sealing plate 112, and between the water outlet branch pipe 320 and the second communication port 116, thereby playing a sealing role. At the same time, the water inlet branch pipe 310 and the first through-hole 131 of the sealing gasket 130 can be interference fit to play a sealing role, and the water outlet branch pipe 320 and the second through-hole 132 of the sealing gasket 130 can be interference fit to play a sealing role. In this embodiment, a sealing gasket 130 is used to seal multiple water inlet branch pipes 310 and water outlet branch pipes 320 , which is easy to operate and assemble and has good sealing performance.

[0102] It should be noted that the circumferential edge of the sealing gasket 130 can also seal the air passage connecting the shell body 111 and the sealing plate 112. Specifically, the end surface of the circumferential edge of the sealing gasket 130 can be provided with one or more sealing grooves along the circumference. When there are multiple sealing grooves, each circle of sealing grooves encircles the circumferential edge of the sealing gasket 130. The multiple circles of sealing grooves are spaced apart along the thickness direction of the sealing gasket 130. The multiple circles of sealing grooves can provide multiple circles and multiple layers of sealing. In the solution using the sealing gasket 130, the water inlet branch 310 and the water outlet branch 320 can also be connected to the sealing gasket 130 and the sealing plate 112 by expansion joints.

[0103] Optionally, in the scheme of the sealing gasket 130, the inner walls of the first through-hole 131 and the second through-hole 132 of the sealing gasket 130 can be provided with a circumferential sealing groove, and / or, the inner walls of the first connecting port 115 and the second connecting port 116 can also be provided with a circumferential sealing groove, and the outer peripheral walls of the water inlet branch pipe 310 and the water outlet branch pipe 320 can be provided with a sealing ring 1124, and the sealing ring 1124 can be correspondingly arranged in the circumferential sealing groove to further improve the sealing effect.

[0104] The term "expansion connection" refers to a method in which the water inlet branch pipe 310 or the water outlet branch pipe 320 expands outward under the pressure of internal gas or liquid, and then connects to the sealing plate 112. One method for implementing the expansion connection of the water inlet branch pipe 310 and the water outlet branch pipe 320 is to first assemble the water inlet branch pipe 310 and the water outlet branch pipe 320 in a flat tube state to the first connecting port 115 and the second connecting port 116 (and / or the first through port 131 and the second through port 132, etc.), connect the coil 210 with the water inlet branch pipe 310 and the water outlet branch pipe 320, then temporarily seal the outlet end of the coil 210, and fill the inlet end of the coil 210 with gas, etc., to increase the pressure of the water inlet branch pipe 310 and the water outlet branch pipe 320. Under the action of pressure, the water inlet branch pipe 310 and the water outlet branch pipe 320 expand outward and abut against the sealing plate 112 (and / or the sealing gasket 130) to achieve the connection.

[0105] It should be noted that the aforementioned sealing solutions can be combined to achieve a better seal between the inlet branch pipe 310, the outlet branch pipe 320, and the sealing plate 112. The first and second communication ports 115, 116 can have the same structure, for example, circular holes of equal diameter. This eliminates the need to distinguish between the first and second communication ports 115, 116 during fabrication of the water distribution and collection assembly 100, improving fabrication efficiency and convenience. Similarly, the inlet branch pipe 310 and the outlet branch pipe 320 can also have the same structure and be arranged in parallel.

[0106] In some embodiments, the water inlet connector 140 is connected to the side wall of the shell 110 away from the heat exchange assembly 200. Specifically, the side wall of the shell body 111 (i.e., the top plate 1112) opposite the sealing plate 112 is provided with a water inlet through-hole 1114 corresponding to the water inlet channel 101. The water inlet connector 140 is coaxially arranged and communicates with the water inlet through-hole 1114. The water inlet connector 140 can be a tubular member, and its inner or outer wall can be provided with threads so that the water inlet connector 140 can be threadedly connected to the outlet pipe of the heat exchange water supply system. The water inlet connector 140 can be at least partially located on the outside of the shell body 111 and extend toward the side of the shell body 111 away from the sealing plate 112 to facilitate the connection of the water inlet connector 140 to the outlet pipe of the heat exchange water supply system.

[0107] Optionally, the water outlet connector 150 and the water inlet connector 140 may be disposed on the same side wall of the housing 110. For example, the water outlet connector 150 may also be connected to the side wall of the housing 110 away from the heat exchange assembly 200. Specifically, a water outlet through-hole 1115 may be provided on the side wall of the housing body 111 (i.e., the top plate 1112) opposite the sealing plate 112, corresponding to the water inlet channel 101. The water outlet connector 150 is coaxially disposed and communicates with the water outlet through-hole 1115. The water outlet connector 150 may be at least partially located on the outside of the housing body 111 and extend toward the side of the housing body 111 away from the sealing plate 112. Among them, the water outlet joint 150 can be a tubular part, and its inner wall or outer wall can be provided with a thread, so that the water outlet joint 150 can be threadedly connected to the water inlet pipe of the heat exchange water supply system. The water outlet joint 150 can be at least partially located on the outside of the shell body 111 and extend toward the side of the shell body 111 away from the sealing plate 112, so as to facilitate the connection of the water inlet joint 140 with the water inlet pipe of the heat exchange water supply system.

[0108] In this embodiment, the water inlet joint 140 can be arranged below the water outlet joint 150 . Arrow A in the figure indicates the flow direction of water in the water distribution and collection assembly 100 .

[0109] It can be understood that the water inlet joint 140 and the water outlet joint 150 are arranged on the shell body 111, which is convenient for connection and assembly; the water inlet joint 140 and the water outlet joint 150 are arranged on the same side wall, which is beneficial to improving the rationality of the component layout of the water distribution assembly 100, reducing the space occupied by the water inlet joint 140 and the water outlet joint 150 in different directions, and is also beneficial to the heat exchange water supply system being connected to the water distribution assembly 100 from one direction.

[0110] It should be noted that the water inlet connector 140 and the water outlet connector 150 may also be provided on different side walls of the shell body 111 .

[0111] In some embodiments, optionally, as shown in FIG1 and FIG2 , the water inlet connector 140 and the water outlet connector 150 can be an integral structure with the shell body 111, can be an integral structure formed by integral processing, or can be an integral structure formed by separate assembly. In some embodiments, the water inlet connector 140 and the water outlet connector 150 and the shell body 111 are made of the same material. For example, the water inlet connector 140 and the water outlet connector 150 and the shell body 111 are all made of metal materials, and the water inlet connector 140 and the water outlet connector 150 and the shell body 111 are integrally formed using metal materials through powder alloy sintering, sand casting, forging, or machining; for another example, the water inlet connector 140 and the water outlet connector 150 and the shell body 111 are made of ceramic, glass, or other materials, and the water inlet connector 140 and the water outlet connector 150 are integrally formed using metal materials through powder alloy sintering, sand casting, forging, or machining. 150 and the shell body 111 are integrally formed by sintering or other methods; for another example, the water inlet connector 140, the water outlet connector 150 and the shell body 111 are made of plastic or other materials, and the water inlet connector 140, the water outlet connector 150 and the shell body 111 plastic are integrally formed by injection molding, molding, or 3D printing (3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses a digital model file as a basis and uses powdered metal or plastic and other adhesive materials to construct objects by printing layer by layer). In other implementations, the water inlet connector 140, the water outlet connector 150 and the shell body 111 are made of different materials. For example, the water inlet connector 140 and the water outlet connector 150 are made of metal material, and the shell body 111 is made of non-metallic material. The water inlet connector 140 and the water outlet connector 150 are both embedded in the through hole of the shell body 111 and integrally formed by injection molding, sintering, molding, etc.

[0112] It should be noted that the metal material can be stainless steel, copper, etc. The water inlet connector 140 and the water outlet connector 150 can be made of the same material or different materials, and the water inlet connector 140 and the shell body 111, as well as the water outlet connector 150 and the shell body 111, can be connected in the same manner or in different manners. Optionally, in order to improve the versatility of the water inlet connector 140 and the water outlet connector 150, in some embodiments, the water inlet connector 140 and the water outlet connector 150 are set to be made of the same material and have the same structure, and the water inlet connector 140 and the shell body 111, as well as the water outlet connector 150 and the shell body 111, use the same connection method.

[0113] It can be understood that the shell body 111, the water inlet joint 140, the water outlet joint 150 and the shell body 111 are an integrated structure, which can have a simple structure, high assembly efficiency, fewer sealing connection surfaces 1122, and higher reliability of the water distribution assembly 100.

[0114] In other embodiments, as shown in Figures 22 to 24, the water inlet connector 140 and the water outlet connector 150 can be separately provided and then assembled and connected to the shell body 111. Specifically, the shell body 111 is provided with a water inlet through-hole 1114, a water inlet channel 101, a return channel 121, a water outlet channel 102, and a water outlet through-hole 1115. The water outlet through-hole 1115 is provided at a position corresponding to the water inlet channel 101 and is in communication with the water inlet channel 101. The water outlet through-hole 1115 is provided at a position corresponding to the water outlet channel 102 and is in communication with the water outlet channel 102. The water inlet connector 140 is sealedly connected to the water inlet through-hole 1114, forming a sealed connection 1116. The water outlet connector 150 is sealedly connected to the water outlet through-hole 1115. Among them, the water inlet joint 140 can be welded, riveted, crimped or embedded into the water inlet through-hole 1114 to be sealed and connected with the shell body 111, or it can be sealed and connected with the shell body 111 using rubber rings, rubber gaskets, etc.; similarly, the water outlet joint 150 can be welded, riveted, crimped or embedded into the water outlet through-hole 1115 to be sealed and connected with the shell body 111, or it can be sealed and connected with the shell body 111 using rubber rings, rubber gaskets, etc.

[0115] The coil heat exchanger 10 has different structures for the heat exchange assembly 200 depending on the usage environment and requirements. For example, the heat exchange assembly 200 may be a water distribution assembly 100 without or with the first water return structure 120. In the water distribution assembly 100 with the first water return structure 120, the first water return structure 120 may also be different. The water inlet connector 140 and the water outlet connector 150 are configured to be assembled separately from the housing 110, making them universal and standard components suitable for use with different types of housings 111. This allows for large-scale automated mass production of the water inlet connector 140 and the water outlet connector 150, resulting in high efficiency and low cost.

[0116] In some embodiments, the water distribution assembly 100 is provided with a vent assembly 160 for venting gas from the water flow path. The vent assembly 160 can be connected to the water outlet channel 102. Specifically, as shown in FIG14 , the vent assembly 160 can be provided on the water outlet connector 150. As shown in FIG13 , the vent assembly 160 can also be provided on the housing 111 , specifically on the top plate 1112 , corresponding to the water outlet channel 102. The vent assembly 160 can be an exhaust valve that can be opened to vent gas from the water flow path or closed to seal the vent assembly 160 and prevent water leakage.

[0117] In some embodiments, the water distribution assembly 100 is provided with a drain assembly 170, and the vent assembly 160 is used to release water from the water flow path. The drain assembly 170 can be connected to the water inlet channel 101. Specifically, as shown in Figure 14, the drain assembly 170 can be provided on the water outlet connector 150. As shown in Figure 13, the drain assembly 170 can also be provided on the shell body 111, specifically on the top plate 1112, corresponding to the water inlet channel 101. The drain assembly 170 can be a drain valve. The drain assembly 170 can be opened to release air from the water flow path, or closed to seal the drain assembly 170 and prevent water leakage.

[0118] It should be noted that the positions of the exhaust assembly 160 and the drain assembly 170 can also be interchanged. In this embodiment, the exhaust assembly 160 can be arranged above the drain assembly 170. In this embodiment, by connecting the exhaust assembly 160 with the water outlet channel 102, the exhaust effect is better compared to the form in which the exhaust assembly 160 is connected to the water inlet channel 101. This allows more gas in the heat exchange assembly 200 to be discharged, thereby improving the heat exchange efficiency. In this embodiment, by connecting the drain assembly 170 with the water inlet channel 101, it is beneficial to drain all the water in the heat exchange assembly 200 when the heat exchange assembly 200 is not in use.

[0119] The processes of the multiple coils 210 of the coil heat exchanger 10 of this embodiment can be set to be the same or different. The coil 210 can include at least two heat exchange sections, and the multiple heat exchange sections are arranged in series in sequence. Each heat exchange section can be one heat exchange tube or multiple heat exchange tubes. When any heat exchange section has multiple heat exchange tubes, the multiple heat exchange tubes are arranged in parallel. In other words, along the direction of water flow, the number of heat exchange tubes can be different at different positions. For example, the outlet of one water inlet pipe can be connected to multiple water outlet pipes, or the outlets of multiple water inlet pipes can be connected to the same water inlet pipe, or one water inlet pipe can be connected to one water outlet pipe, etc. All heat exchange tubes in the multiple heat exchange sections can be roughly the same length, and the two ends of all heat exchange tubes are roughly aligned, forming a coil 210 structure that bends and folds in sequence.

[0120] In one implementation, as shown in Figures 2 and 3, any heat exchange tube of the multiple heat exchange sections is arranged along the first direction X, the first ends of all heat exchange tubes along the first direction X can be roughly aligned, the second ends of all heat exchange tubes along the first direction X are roughly aligned, and multiple heat exchange tubes are arranged at intervals along the second direction Y and the third direction Z. The water distribution and collection assembly 100 is arranged at the first end of the heat exchange tube along the first direction X. Among the multiple heat exchange tubes, the first ends of the heat exchange tubes of the first heat exchange section are all connected to the water inlet branch pipe 310. As shown in Figures 4 to 11, the water entering the water inlet channel 101 flows along the path B from the water inlet channel 101 through the multiple water outlet branch pipes 320, flows to the first end of the heat exchange tube of the first heat exchange section, and then flows through the multiple heat exchange tubes of the first heat exchange section along the first direction X to the second end, and enters the heat exchange tube of the second heat exchange section from the second ends of the multiple heat exchange tubes of the first heat exchange section, and then flows back from the heat exchange tube of the second heat exchange section along the opposite direction of the first direction X to the first end of the heat exchange tube of the second heat exchange section, forming a primary reflux. In some embodiments, as shown in FIG8 , the process of the heat exchange assembly 200 is relatively short. The first end of the second heat exchange section is connected to the outlet branch pipe 320. The water flows along the path D through the first end of the heat exchange tube of the second heat exchange section to the outlet branch pipe 320, and then flows back to the outlet channel 102. That is, the water of each coil 210 flows through the water inlet branch pipe 310, flows through a long U-shaped tube, and then flows back to the outlet channel 102 through the outlet branch pipe 320. This process can also be understood with reference to the water flow path A4 of FIG9 . In other embodiments, as shown in Figures 10 and 11, the process of the heat exchange assembly 200 is longer, and the first end of the second heat exchange section can be connected to the first end of the third heat exchange section. The water flows along the path C in Figure 10 through the first end of the heat exchange tube of the second heat exchange section into the first end of the heat exchange tube of the third heat exchange section, and then flows from the heat exchange tube of the third heat exchange section along the first direction X to the second end of the heat exchange tube of the third heat exchange section, and then flows back to the first end through the fourth heat exchange section, forming a second backflow. The first end of the fourth heat exchange section can be connected to the water outlet branch 320. The water flows along the path D in Figure 10 through the first end of the heat exchange tube of the fourth heat exchange section and flows back to the water outlet branch 320, and then flows into the water outlet channel 102; that is, the water flow of each coil 210 flows through two long U-shaped tubes (flowing through the first long U-shaped tube 201 and the second long U-shaped tube 202 in sequence). This process can also be understood with reference to the water flow path A5 in Figure 11.Each coil 210 or part of the coil 210 may also include 6 or more even-numbered heat exchange sections (i.e., three long U-shaped tubes or more long U-shaped tubes) to form more refluxes. The specific arrangement may refer to the circulation arrangement of the first section and the fourth section. Taking the arrangement of three long U-shaped tubes in each coil 210 as an example, as shown in FIG4 , the water flowing out of the first long U-shaped tube 201 flows out of the first long U-shaped tube 201 along path C1 and flows through the first reflux channel 1211 before flowing to the second long U-shaped tube 202. The water flowing out of the second long U-shaped tube 202 flows out of the second long U-shaped tube 202 along path C2 and flows through the second reflux channel 1212 before flowing to the third long U-shaped tube 203. The water flowing out of the second long U-shaped tube 202 flows back to the water outlet branch 320 along path D shown in FIG4 and then flows into the water outlet channel 102. This water flow process may also refer to the water flow path A2 shown in FIG5 .

[0121] Among them, one reflux is also a process. Specifically, one reflux refers to a one-way flow path in which the water flows from the first end to the second end and then flows back from the second end to the first end. Two refluxes refer to the water flow needing to pass through the above two reflux flow paths. Similarly, three or more refluxes are all reflux flow paths in which the water flow needs to pass through a corresponding number of times.

[0122] Along the water flow direction, the heat exchange tubes connected at the second end of each coil 210 can be connected through a joint, that is, at the second end, the outlet of the upstream heat exchange tube can be connected to the inlet of the downstream heat exchange tube by a joint. When the upstream heat exchange tube and the downstream heat exchange tube are both one heat exchange tube, the two can be connected by a U-shaped joint. The joint and the two heat exchange tubes can be an integral structure, such as a long U-shaped tube structure welded into one, or a long U-shaped tube structure injection molded into one, etc. The heat exchange tubes are connected as a whole at the second end, which is equivalent to a long U-shaped tube with an integral structure for a reflux. When two or more refluxes are formed, it is equivalent to the outlet of the upstream long U-shaped tube and the inlet of the downstream long U-shaped tube in two or more long U-tubes being connected and connected at the first end, and the U-shaped connection part of each long U-shaped tube is located at the second end.

[0123] It should be noted that the connection at the second end of each coil 210 can also be achieved by providing an integrated second water return structure. The second water return structure is provided at the second end of the heat exchange assembly 200 along the first direction X. The second water return structure can be provided with a water return cavity, and the second end of the upstream heat exchange tube and the second end of the adjacent downstream heat exchange tube along the water flow direction are both connected to the water return cavity. Multiple coils 210 can share a second water return structure. Specifically, multiple water return cavities can be provided on the second water return structure, and the second ends of two adjacent sections of heat exchange tubes in the same coil 210 can be connected through a water return cavity. In one reflux, when the pressures at the second ends of multiple coils 210 are the same, in the same reflux, the second ends of adjacent heat exchange tubes of multiple coils 210 can share a water return cavity. For example, all coils 210 include one reflux, and the second water return structure can be provided with a water return cavity. The second ends of the first heat exchange sections of all coils 210 are connected to the second ends of the second heat exchange sections through the water return cavity. For another example, all coils 210 include two refluxes. The second water return structure can be provided with two spaced and independent water return cavities. The second ends of the first heat exchange sections of all coils 210 are connected to the second ends of the second heat exchange sections through one of the water return cavities. The second ends of the third heat exchange sections of all coils 210 are connected to the second ends of the fourth heat exchange sections through the other water return cavity.

[0124] It should be noted that, in this embodiment, unless otherwise specified, each coil 210 is formed by a long U-shaped tube or multiple long U-shaped tubes are connected in sequence as an example, and the inlet and outlet ends of the long U-shaped tube are both located at the first end of the heat exchange component 200 for illustration, wherein the number of reflux times of the coil 210 is consistent with the number of U-shaped tubes. For example, as shown in Figures 8 and 9, when there is one reflux, each coil 210 only needs one U-shaped tube, and the two parallel sides of the U-shaped tube form the first heat exchange section and the second heat exchange section of the coil 210; for another example, in Figures 10 and 11, when there are two refluxes, each coil 210 includes two U-shaped tubes, the outlet of the first long U-shaped tube 201 and the inlet of the second long U-shaped tube 202 are connected and communicated at the first end, the two parallel sides of the first long U-shaped tube 201 form the first heat exchange section and the second heat exchange section of the coil 210, and the two parallel sides of the second long U-shaped tube 202 form the third heat exchange section and the fourth heat exchange section of the coil 210. For another example, as shown in Figures 4 and 5, when there are two refluxes, each coil 210 includes three U-shaped tubes, the outlet of the first long U-shaped tube 201 is connected and communicated with the inlet of the second long U-shaped tube 202 at the first end, the outlet of the second long U-shaped tube 202 is connected and communicated with the inlet of the third long U-shaped tube 203 at the first end, the two parallel sides of the first long U-shaped tube 201 form the first heat exchange section and the second heat exchange section of the coil 210, the two parallel sides of the second long U-shaped tube 202 form the third heat exchange section and the fourth heat exchange section of the coil 210, and the two parallel sides of the third long U-shaped tube 203 form the fifth heat exchange section and the sixth heat exchange section of the coil 210.

[0125] When coil 210 has two or more return flows, along the water flow direction, as shown in FIG12 , the first end of the upstream heat exchange section and the first end of the downstream heat exchange section can be connected via an additional joint, such as a semicircular tube 180 or a U-shaped joint. In other words, the outlet of the upstream long U-shaped tube and the outlet of the downstream long U-shaped tube can be connected via a joint. As shown in FIG4 , FIG6 , and FIG8 , in some embodiments, a first water return structure 120 can also be provided on the water distribution and collection assembly 100 to connect the first end of the upstream heat exchange section and the first end of the downstream heat exchange section via the first water return structure 120, that is, the outlet of the upstream long U-shaped tube and the outlet of the downstream long U-shaped tube are connected via the first water return structure 120.

[0126] It should be noted that the upstream and downstream in the coil 210 are defined with reference to the direction of water flow, wherein, along the direction of water flow, the part close to the inlet is the upstream, and the part close to the outlet is the downstream, that is, the water flows from upstream to downstream.

[0127] In one embodiment, the water distribution and collection assembly 100 further includes a first water return structure 120, which is provided with a reflux channel 121. The reflux channel 121, the water inlet channel 101, and the water outlet channel 102 are isolated from each other. The coil heat exchanger 10 also includes a plurality of reflux branch pipes 330, one end of each of which is connected to the housing 110 and communicates with the reflux channel 121. Each reflux channel 121 is connected to at least two reflux branch pipes 330, and the other end of each reflux branch pipe 330 is located outside the housing 110 and extends away from the housing 110. One of the at least two reflux branch pipes 330 passing through the same reflux channel 121 is a first reflux branch pipe 331, and the other is a second reflux branch pipe 332. At least one of the multiple coils 210 is a first coil 220, and the first coil 220 includes a first heat exchange tube 221 and a second heat exchange tube 222. The outlet of the first heat exchange tube 221 is connected to the other end of the first reflux branch 331, and the inlet of the second heat exchange tube 222 is connected to the other end of the second reflux branch 332, so that the first heat exchange tube 221 and the second heat exchange tube 222 are connected in series.

[0128] The water inlet channel 101 can be disposed on one side of the first water return structure 120, and the water outlet channel 102 can be disposed on the other side of the first water return structure 120. In other words, the first water return structure 120 is disposed between the water inlet channel 101 and the water outlet channel 102, and isolates the water inlet channel 101 from the water outlet channel 102. Specifically, in one implementation, the water distribution assembly 100 is formed with a receiving chamber 1117, and the first water return structure 120 is disposed in the receiving chamber 1117, and the first water return structure 120 separates the receiving chamber 1117 into the water outlet channel 102 and the water inlet channel 101.

[0129] It is understood that when the coil 210 has two or more return flows, a return branch can be used, connected to the long U-shaped outlet or inlet. For a first coil 220, the inlet branch 310 can be connected to the inlet of the first heat exchange tube 221 in the first coil 220. The outlet of the first heat exchange tube 221 can be connected to the inlet of the second heat exchange tube 222 of the first coil 220 via the first outlet branch 320, the first return structure 120, and the second outlet branch 320. The outlet of the second heat exchange tube 222 is connected to the outlet branch 320.

[0130] The first coil 220 is actually a coil 210 with two or more recirculations. Some of the coils 210 can be configured as the first coil 220, while others can be configured as coils 210 with only one recirculation. Alternatively, all coils 210 can be configured as the first coil 220.

[0131] The first heat exchange tube 221 and the second heat exchange tube 222 can be understood as two heat exchange tubes that are interconnected and communicated at the first end in the first direction X. For example, as shown in Figures 10 and 11, when the first coil 220 has two refluxes, the heat exchange tube in the second heat exchange section (i.e., the outlet section of the first long U-shaped tube 201) and the heat exchange tube in the third heat exchange section (i.e., the inlet section of the second long U-shaped tube 202) can serve as the first heat exchange tube 221 and the second heat exchange tube 222. In other words, when the first heat exchange section and the second heat exchange section are long U-shaped tubes connected as one at the second end, and the third heat exchange section and the fourth heat exchange section are U-shaped tubes connected as one at the second end, the outlet of the upstream long U-shaped tube and the inlet of the downstream U-shaped tube are connected at the first end through a set of first reflux branch pipes 331, the first water return structure 120, and the second reflux branch pipes 332. For another example, as shown in Figures 4 and 5, when the first coil 220 has three refluxes, the heat exchange tubes in the second heat exchange section (i.e., the outlet section of the first long U-shaped tube 201) and the heat exchange tubes in the third heat exchange section (i.e., the inlet section of the second long U-shaped tube 202) become the first heat exchange tube 221 and the second heat exchange tube 222, and the heat exchange tubes in the fourth heat exchange section (the outlet section of the second long U-shaped tube 202) and the heat exchange tubes in the fifth heat exchange section (the inlet section of the third long U-shaped tube 203) become the first heat exchange tube 221 and the second heat exchange tube 222. Two heat exchange tubes 222, in other words, when the first heat exchange section and the second heat exchange section are long U-shaped tubes connected as one at the second end, when the third heat exchange section and the fourth heat exchange section are U-shaped tubes connected as one at the second end, and when the fifth heat exchange section and the sixth heat exchange section are U-shaped tubes connected as one at the second end, among the three long U-shaped tubes, the outlet of the upstream long U-shaped tube and the inlet of the downstream U-shaped tube are connected at the first end through the first reflux branch 331, the first return water structure 120, and the second reflux branch 332.

[0132] It should be noted that the first return branch 331 is the return branch 330 connected to the first heat exchange tube 221, and the second return branch 332 is the water branch connected to the second heat exchange tube 222. The water in the first return branch 331 generally flows into the return channel 121, and the water in the second return branch 332 generally flows from the return channel 121. All return branches 330 can have the same structure, and the return branches 330, the water inlet branch 310, and the water outlet branch 320 can all have the same structure and be arranged parallel to each other to improve the manufacturing convenience of the water distribution and collection assembly 100. The return branches 330, the water inlet branch 310, and the water outlet branch 320 can all be aligned with the extension direction of the long U-shaped tube.

[0133] In actual arrangement, all heat exchange tubes in the heat exchange assembly 200 that need to be interconnected at the first end can be connected through the same first water return structure 120. For example, in the case of multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222, the first water return structure 120 can be provided with multiple spaced reflux channels 121 to connect the multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 respectively through different reflux channels 121. If two groups of the multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 have the same pressure difference or the pressure difference between the two groups is the same, a larger reflux channel 121 can also be provided on the first water return structure 120 to connect the multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 through the single reflux channel 121.

[0134] In some embodiments, at least two of the plurality of coils 210 are first coils 220 , and at least two first heat exchange tubes 221 are connected to corresponding second heat exchange tubes 222 through the same reflux channel 121 .

[0135] As shown in Figures 10 and 11 , multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 are connected by a first return channel 1211. Multiple first heat exchange tubes 221 are isobaric channels, and multiple second heat exchange tubes 222 are isobaric channels. The first heat exchange tubes 221 and second heat exchange tubes 222 in the same return flow in multiple first coils 220 can be connected through the same return channel 121. In this embodiment, the number of return channels 121 can be equal to the number of return flows in the first coil 220 minus one. For example, as shown in Figures 10 and 11 , when all first coils 220 have two return flows, the first water return structure 120 can be provided with one return channel 121. In all first coils 220, the heat exchange tubes in the second heat exchange section and the heat exchange tubes in the third heat exchange section are connected through this return channel 121, that is, all return branch pipes are connected to this return channel 121. For another example, when all the first coils 220 are triple-return, the first water return structure 120 can be provided with two independent return channels 121. In all the first coils 220: the heat exchange tubes in the second heat exchange section are connected to the heat exchange tubes in the third heat exchange section through one of the return channels 121, that is, all the return water branches connecting the second heat exchange section and the third heat exchange section are connected to the return channel 121; the heat exchange tubes in the fourth heat exchange section are connected to the heat exchange tubes in the fifth heat exchange section through another return channel 121, that is, all the return water branches connecting the fourth heat exchange section and the fifth heat exchange section are connected to the other return channel 121.

[0136] In other embodiments, as shown in Figures 4 and 5 in conjunction with Figures 6 and 7 , at least two of the multiple coils 210 are first coils 220, and the first water return structure 120 is provided with multiple reflux channels 121. A reflux channel 121 is provided between each of the multiple first heat exchange tubes 221 and the corresponding second heat exchange tubes 222. In other words, each group of first heat exchange tubes 221 and the second heat exchange tubes 222 communicating at the first end thereof has a corresponding reflux channel 121, and the reflux channel 121 is only connected to one group of first heat exchange tubes 221 and the second heat exchange tubes 222 communicating at the first end thereof.

[0137] In one specific embodiment, as shown in Figures 6 and 7 , multiple coils 210 include a first coil 220 with two refluxes. Thus, each first coil 220 includes a set of first heat exchange tubes 221 and second heat exchange tubes 222. The first water return structure 120 is provided with a reflux channel 121 corresponding to each first coil 220. That is, one reflux channel 121 is connected to only two reflux branches 330. Figures 6 and 7 not only include first coils 220 with two refluxes, but also at least one coil 210 is a U-shaped tube, meaning that the coil 210 has only one reflux. The water flow within the coil 210 flows along paths B and D shown in Figure 6 . This process can also be understood with reference to the water flow path A3 in Figure 7 .

[0138] In another specific embodiment, as shown in Figures 4 and 5, the multiple coils 210 are first coils 220 with three refluxes. In this way, each first coil 220 includes two groups of first heat exchange tubes 221 and second heat exchange tubes 222, and the first return water structure 120 is respectively provided with two reflux channels 121 corresponding to each first coil 220.

[0139] The first water return structure 120 may be formed on the isolation member 124 . For example, a return groove 1241 is provided inside the isolation member 124 . The return groove 1241 cooperates with the inner wall surface of the housing 110 to form the return channel 121 .

[0140] In the solution with multiple reflux channels 121, as shown in Figures 4 and 6, the first water return structure 120 includes a plurality of spaced-apart protrusions 122, adjacent protrusions 122 being connected by partitions 123, the protrusions 122 and the partitions 123 being connected to the inner wall surface of the housing 110, and each protrusion 122 being provided with the reflux channel 121. The protrusions 122 and the reflux channels 121 can be provided in a one-to-one correspondence, or multiple reflux channels 121 can be provided on one protrusion 122 as needed. When there are a large number of protrusions 122, to improve space utilization, some of the protrusions 122 can be tilted in their length relative to the top plate 1112 of the shell body 111 (a portion of the housing 110 of the water distribution and collection assembly 100). Furthermore, along the height direction of the shell body 111 (refer to the third direction Z), the tilt directions of two adjacent protrusions 122 can be opposite. This staggered arrangement of adjacent protrusions 122 allows multiple protrusions 122 to be arranged in a smaller space, thereby enabling the installation of a larger number of reflux channels 121. The partitions 123 are sealed against the protrusions 122. Specifically, the partitions 123 and protrusions 122 can be integrally formed, or the partitions 123, protrusions 122, and shell body 111 can also be integrally formed.

[0141] It should be noted that when a first coil 220 has three or more refluxes, a reflux channel 121 can be provided for both the first heat exchange tube 221 and the second heat exchange tube 222 at the first end of each reflux. Taking a first coil 220 with three refluxes as an example, the first water return structure 120 is provided with two reflux channels 121 corresponding to the first coil 220. The heat exchange tubes in the second heat exchange section are connected to the heat exchange tubes in the third heat exchange section through one of the reflux channels 121, and the heat exchange tubes in the fourth heat exchange section are connected to the heat exchange tubes in the fifth heat exchange section through the other reflux channel 121.

[0142] The first water return structure 120 of this embodiment may be an integrated structure. Specifically, the first water return structure 120 may be an integral structure formed by injection molding or a integral structure formed by welding.

[0143] In some embodiments, the first water return structure 120 is connected to the inner wall surface of the shell body 111, and the two are an integral structure. Specifically, the first water return structure 120 and the shell body 111 can be injection molded into an integral structure. The first water return structure 120 and the shell body 111 can be made of the same material. For example, the first water return structure 120 and the shell body 111 can be made of metal. In this case, the first water return structure 120 and the shell body 111 can be welded or sintered by powder alloy or sand cast or forged or machined to form an integral structure. The first water return structure 120 and the shell body 111 can also be made of ceramic or glass. In this case, the first water return structure 120 and the shell body 111 can be formed into an integral structure by sintering or the like. The first water return structure 120 and the shell body 111 can also be made of plastic. In this case, the first water return structure 120 and the shell body 111 can be formed into an integral structure by injection molding, sintering, molding or the like.

[0144] In some other embodiments, as shown in Figures 25 and 26, the shell body 111 may include a circumferential frame 1113 and a top plate 1112, the top plate 1112 is connected to the end of the circumferential frame 1113 facing away from the sealing plate 112, the circumferential frame 1113 and the top plate 1112 are sealed and connected, and the two can be split assembly structures, and the first return water structure 120 can be assembled separately or integrally formed on the inner wall surface of the top plate 1112. It is understandable that the structure of the heat exchange component 200 of the coil heat exchanger 10 is different depending on the usage environment and requirements. For example, it can be a sub-collection component 100 without the first return water structure 120, or it can be a sub-collection component 100 with the first return water structure 120. In the sub-collection component 100 with the first return water structure 120, the first return water structure 120 can also be different. By setting the shell body 111 as a structure in which the circumferential frame 1113 and the top plate 1112 are separately assembled, the circumferential frame 1113 can be used as a standard part and can be used in different first return water structures 120, so that the circumferential frame 1113 can be mass-produced automatically with high production efficiency and low cost.

[0145] In other embodiments, as shown in Figures 27 and 28, the circumferential frame 1113 and the top plate 1112 of the shell body 111 are an integral structure, and the first water return structure 120 is separately assembled onto the top plate 1112. In this way, the shell body 111 as a whole can be used as a universal standard component. For different coil heat exchangers 10, only different first water return structures 120 need to be assembled into the shell body 111. This allows the shell body 111 to be used as a standard component, allowing the shell body 111 to be mass-produced in batches and automatically, with high production efficiency and low cost.

[0146] It should be noted that when the first water return structure 120 is provided, the sealing plate 112 is also provided with a third communication port 117 that communicates with the return channel 121. The third communication port 117 is sealedly connected to the corresponding return branch pipe 330. In the embodiment of the sealing gasket 130, the sealing gasket 130 also has a third through-hole 133 corresponding to the third communication port 117. The specific sealing method can refer to the sealing connection method between the outlet branch pipe 320 and the inlet branch pipe 310 and the sealing plate 112, and will not be repeated here. The first communication port 115, the second communication port 116, and the third communication port 117 can all have the same structure, for example, all are circular holes of equal diameter. In this way, when manufacturing the water distribution and collection assembly 100, there is no need to distinguish between the first communication port 115, the second communication port 116, and the first communication port 115, which is convenient for processing and has high efficiency.

[0147] It should also be noted that the first direction X can be the length direction of the heat exchange component 200, the second direction Y can be the width direction of the heat exchange component 200, and the third direction Z can be the height direction of the heat exchange component 200. The first direction X, the second direction Y and the third direction Z can be arranged perpendicular to each other.

[0148] As shown in Figures 29 and 30, an embodiment of the present application also provides a HVAC equipment, including a fan 20 and a coil heat exchanger 10 proposed in this application or any embodiment of the present application, and the fan 20 is arranged on one side of the coil heat exchanger 10.

[0149] Specifically, the fan 20 can be arranged on one side of the heat exchange component 200 along the second direction Y, and the flow direction E of the airflow formed by the fan 20 is substantially parallel to the second direction Y.

[0150] The HVAC equipment may also include other components, such as a heat exchange water supply system. The connection between the heat exchange water supply system and the coil heat exchanger 10 can be referred to above and will not be repeated here.

[0151] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A water distribution assembly, applied to a coil heat exchanger with fins, wherein: include: a housing, wherein a water inlet channel and a water outlet channel are formed in the housing and are isolated from each other; a plurality of water inlet branch pipes, the plurality of water inlet branch pipes being arranged at intervals, the inlet ends of the water inlet branch pipes being connected to the shell and communicating with the water inlet channel, the water inlet branch pipes extending from the inlet end to the outlet end in a direction away from the shell, the outlet end of the water inlet branch pipe being used to connect to the water inlet end of the coil of the coil heat exchanger; Multiple water outlet branch pipes are arranged at intervals, the outlet ends of the water outlet branch pipes are connected to the shell and communicated with the water outlet channel, the water outlet branch pipes extend from the inlet end to the outlet end in a direction away from the shell, and the inlet end of the water outlet branch pipe is used to connect to the water outlet end of the coil.

2. The water distribution assembly according to claim 1, wherein: A plurality of first communicating ports and a plurality of second communicating ports are provided on the first side wall of the shell. The plurality of first communicating ports correspond to the positions of the water inlet channels and are respectively communicated with the water inlet channels. The plurality of second communicating ports correspond to the positions of the water outlet channels and are respectively communicated with the water outlet channels. The inlet end of each water inlet branch pipe is sealedly connected to one of the first communicating ports, and the inlet end of each water outlet branch pipe is sealedly connected to one of the second communicating ports.

3. The water distribution assembly according to claim 2, wherein: The shell includes a shell body and a sealing plate, the sealing plate forms the first side wall, a first opening is provided on one side of the shell body, and a first groove and a second groove isolated from each other are provided in the shell body, the orientation of the notch of the first groove and the orientation of the notch of the second groove are consistent with the orientation of the first opening, the sealing plate is sealed at the first opening, the sealing plate and the first groove enclose the water inlet channel, and the sealing plate and the second groove enclose the water outlet channel.

4. The water distribution assembly according to claim 3, wherein: The shell body is an integral structure, and / or the sealing plate is an integral structure.

5. The water distribution assembly according to claim 3 or 4, wherein: The water distribution assembly further includes a sealing gasket, which is sealingly disposed between the sealing plate and the shell body.

6. The water distribution assembly according to claim 5, wherein: The sealing gasket covers the first opening and is provided with a plurality of first through-holes and a plurality of second through-holes. The first through-holes correspond one-to-one with the first connecting port and are coaxially arranged. The second through-holes correspond one-to-one with the second connecting port and are coaxially arranged. The inlet end of the water inlet branch pipe passes through the first connecting port and is sealedly connected to the first through-hole. The outlet end of the water outlet branch pipe passes through the second connecting port and is sealedly connected to the second through-hole.

7. The water distribution assembly according to claim 6, wherein: The water inlet branch pipe and / or the water outlet branch pipe are connected to the sealing gasket and the sealing plate by expansion connection.

8. The water distribution assembly according to any one of claims 1 to 7, wherein: A first water return structure is further provided in the housing, wherein the first water return structure is provided with a reflux channel, and the reflux channel, the water inlet channel and the water outlet channel are isolated from each other; The coil heat exchanger also includes a plurality of return branches, one end of each of which is connected to the shell and communicates with the return channel, and each of the return channels is connected to at least two of the return branches, and the other end of each of the return branches is located outside the shell and extends in a direction away from the shell.

9. The water distribution assembly according to claim 8, wherein: The water inlet channel and the water outlet channel are respectively arranged on both sides of the first water return structure.

10. The water distribution assembly according to claim 9, wherein: An accommodating cavity is formed in the shell, and the first water return structure is connected to the inner wall surface of the shell and divides the accommodating cavity into the water outlet channel and the water inlet channel.

11. The water distribution assembly according to any one of claims 8 to 10, wherein: The first water return structure includes an isolator connected to the inner wall surface of the shell. A reflux groove is provided in the isolator. The reflux groove cooperates with the inner wall surface of the shell to form the reflux channel.

12. The water distribution assembly according to claim 11, wherein: The isolating member includes a plurality of protrusions arranged at intervals, adjacent protrusions are connected by partitions, the protrusions and the partitions are both connected to the inner wall surface of the shell, and the reflux channel is arranged on the protrusions.

13. The water distribution assembly according to any one of claims 8 to 12, wherein: The first water return structure is an integrated structure; And / or, the first water return structure and the shell are an integrally formed structure or a split assembly structure.

14. The water distribution assembly according to any one of claims 3 to 7, wherein: The sub-collection assembly further includes a water inlet joint and a water outlet joint, both of which are connected to the shell body, the water inlet joint is communicated with the water inlet channel, and the water outlet joint is communicated with the water outlet channel.

15. The water distribution assembly according to claim 14, wherein: The water inlet joint and the shell body are an integrated structure; And / or, the water outlet joint and the shell body are an integral structure.

16. The water distribution assembly according to claim 14 or 15, wherein: The water distribution assembly further includes an exhaust assembly, which is in communication with the water outlet channel, and the water outlet connector and / or the housing are connected to the exhaust assembly; And / or, the water distribution and collection assembly further includes a drainage assembly, the drainage assembly is communicated with the water inlet channel, and the drainage assembly is connected to the water inlet joint and / or the shell.

17. A coil heat exchanger, wherein: include: The water distribution assembly according to any one of claims 1 to 16; The heat exchange component includes multiple coils and fins. Each coil has a water inlet end and a water outlet end. The water inlet end is connected and communicated with the outlet end of the water inlet branch pipe, and the water outlet end is connected and communicated with the inlet end of the water outlet branch pipe. The fins are connected to the coils.

18. The coil heat exchanger according to claim 17, wherein: The heat exchange assembly further includes an outer shell, the shell is connected to one end of the outer shell, and the water outlet branch pipe and the water inlet branch pipe are both arranged on a first side wall of the shell facing the outer shell.

19. The coil heat exchanger according to claim 18, wherein An end plate is provided at one end of the outer shell, the shell is provided on a side of the end plate facing away from the outer shell, and the water inlet end and the outlet end are both provided through the end plate.

20. The coil heat exchanger according to any one of claims 17 to 19, wherein: A first water return structure is further provided in the housing, wherein the first water return structure is provided with a reflux channel, and the reflux channel, the water inlet channel and the water outlet channel are isolated from each other; The water distribution assembly further includes a first return branch pipe and a second return branch pipe, one end of the first return branch pipe and one end of the second return branch pipe are both connected to the shell and communicated through the return channel; At least one of the multiple coils is a first coil, and the first coil includes a first heat exchange tube and a second heat exchange tube. The outlet of the first heat exchange tube is connected to the other end of the first return branch, and the inlet of the second heat exchange tube is connected to the other end of the second return branch, so that the first heat exchange tube and the second heat exchange tube are connected in series.

21. A heating and ventilation equipment, wherein: It comprises a fan and the coil heat exchanger according to any one of claims 17 to 20, wherein the fan is arranged on one side of the coil heat exchanger.

Images