Water distributing and collecting assembly, coil heat exchanger and heating and ventilation equipment

Abstract

The utility model relates to the related technical field of heating and ventilation components, and discloses a water distributing and collecting assembly, a coil heat exchanger and heating and ventilation equipment, the water distributing and collecting assembly comprises a shell, a plurality of water inlet branch pipes and a plurality of water outlet branch pipes, and a water inlet channel and a water outlet channel are formed in the shell; the main water inlet and the main water outlet of the shell are located on the same side of the shell, the multiple water inlet branch pipes are arranged at intervals, the inlet ends of the water inlet branch pipes are connected with the shell and communicate with the water inlet channel, the water inlet branch pipes extend in the direction away from the shell from the inlet ends to the outlet ends, and the outlet ends of the water inlet branch pipes are used for being connected with the water inlet ends of coil pipes of the coil heat exchanger; the multiple water outlet branch pipes are arranged at intervals, the outlet ends of the water outlet branch pipes are connected with the shell and communicate with the water outlet channel, the water outlet branch pipes extend in the direction away from the shell from the inlet ends to the outlet ends, and the inlet ends of the water outlet branch pipes are used for being connected with the water outlet ends of the coil pipes. The water dividing and collecting assembly is simple in structure, few in parts and convenient to assemble, and the machining and assembling efficiency of the water dividing and collecting assembly is improved.

Description

Technical Field

[0001] 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

[0002] This section merely provides background information related to the present application and is not necessarily prior art.

[0003] At present, the main water distribution and collection scheme of fan coil units is: the water inlet pipe of the main system is connected to the water distribution joint, and water enters the water distribution joint from the water inlet pipe; the water distribution joint is connected to the water inlet branch pipes of each branch, and water is diverted to each water inlet branch pipe through the water distribution joint; each water inlet branch pipe is connected to the heat exchange pipe of each branch, and water flows from each branch pipe into the heat exchange pipe corresponding to each flow path; each water outlet branch pipe is connected to the heat exchange pipe of each flow path and connected to the water collection joint, and water flows out of the heat exchange pipe through each water outlet branch pipe and then collects to the water collection joint; the water collection joint is connected to the water outlet pipe of the main system, and water flows into the water outlet pipe of the main system through the water collection joint and returns to the main system. The total number of parts of the water distribution and collection components is large, the structure is relatively complex, and the assembly efficiency is low. Utility Model Content

[0004] 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:

[0005] The first aspect of the present application proposes a water distribution and collection assembly, which is applied to a coil heat exchanger with fins. The water distribution and collection assembly includes a shell, a plurality of water inlet branches and a plurality of water outlet branches. A water inlet channel and a water outlet channel isolated from each other are formed in the shell. A total water inlet communicating with the water inlet channel is provided on the shell. A total water outlet communicating with the water outlet channel is provided on the shell. The total water inlet and the total water outlet are located on the same side of the shell. The plurality of water inlet branches are arranged at intervals. The inlet end is connected to the shell and communicated with the water inlet channel, the water inlet branch pipe extends from the inlet end to the outlet end in a direction away from the shell, and the outlet end of the water inlet branch pipe is used to connect with the water inlet end of the coil of the coil heat exchanger; multiple water outlet branch pipes are arranged at intervals, the outlet end of the water outlet branch pipe is connected to the shell and communicated with the water outlet channel, the water outlet branch pipe extends 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 with the water outlet end of the coil.

[0006] 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, so that water can flow from the water inlet channel through multiple water inlet branches into multiple coils, and after flowing through multiple coils, it flows back to the water outlet channel through multiple water outlet branches. By integrating the water inlet channel and the water outlet channel into the shell, and the total water inlet and the total water outlet are located on the same side of the shell, the water distribution and collection assembly has a simple structure, occupies less space, has fewer parts, and is easy to assemble, thereby improving the processing and assembly efficiency of the water distribution and collection assembly and reducing the production cost.

[0007] In addition, the water distribution and collection assembly according to the present application may also have the following additional technical features:

[0008] In some embodiments of the present application, a plurality of first connecting ports and a plurality of second connecting ports are provided on the first side wall of the shell, the plurality of first connecting ports correspond to the positions of the water inlet channel and are respectively connected to the water inlet channel, the plurality of second connecting 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 connecting port, and the inlet end of the water outlet branch pipe is sealedly connected to the second connecting port.

[0009] 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 at 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.

[0010] In some embodiments of the present application, the shell body is an integral structure, and / or the sealing plate is an integral structure.

[0011] In some embodiments of the present application, the water distribution and collection assembly further includes a sealing gasket, which is sealingly disposed between the sealing plate and the shell body.

[0012] 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 ports and are coaxially arranged, the second through holes correspond one-to-one with the second connecting ports 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.

[0013] 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.

[0014] In some embodiments of the present application, a first water return structure is further provided in the shell, 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;

[0015] The coil heat exchanger also includes a plurality of return branches, one end of each of which is connected to the shell and communicated 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 away from the shell.

[0016] 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.

[0017] 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.

[0018] In some embodiments of the present application, the first water return structure includes an isolating member connected to the inner wall surface of the shell, a reflux groove is provided in the isolating member, and the reflux groove cooperates with the inner wall surface of the shell to form the reflux channel.

[0019] 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.

[0020] In some embodiments of the present application, the first water return structure is an integrated structure;

[0021] And / or, the first water return structure and the shell are an integrally formed structure or a split assembly structure.

[0022] In some embodiments of the present application, the water distribution assembly also includes an inlet joint and an outlet joint, both of which are connected to the shell body, the inlet joint is connected to the inlet channel, and the outlet joint is connected to the outlet channel.

[0023] In some embodiments of the present application, the water inlet joint and the shell body are an integral structure;

[0024] And / or, the water outlet joint and the shell body are an integral structure.

[0025] In some embodiments of the present application, the water distribution and collection 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 with the exhaust assembly;

[0026] 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.

[0027] The second aspect of the application proposes a coil heat exchanger, including a heat exchange component and a water distribution component proposed in the present application or any embodiment of the present application; the heat exchange component includes a plurality of coils and fins, each of the coils having 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, the water outlet end is connected and communicated with the inlet end of the water outlet branch pipe, and the fins are connected to the coils.

[0028] In addition, the coil heat exchanger according to the present application may also have the following additional technical features:

[0029] 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.

[0030] 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.

[0031] In some embodiments of the present application, a first water return structure is further provided in the shell, 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;

[0032] The water distribution and collection assembly further includes a first reflux branch pipe and a second reflux branch pipe, one end of the first reflux branch pipe and one end of the second reflux branch pipe are both connected to the shell and communicated through the reflux channel;

[0033] 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 reflux branch, and the inlet of the second heat exchange tube is connected to the other end of the second reflux branch, so that the first heat exchange tube and the second heat exchange tube are connected in series.

[0034] A third aspect of the present application proposes a HVAC device, including 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

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A schematic diagram of a water distribution assembly proposed in some embodiments of the present application;

[0037] Figure 2 A schematic diagram of the structure of a coil heat exchanger proposed in some embodiments of the present application;

[0038] Figure 3 for Figure 2 Schematic diagram of the split body;

[0039] Figure 4 for Figure 3 Schematic diagram from another perspective;

[0040] Figure 5 for Figure 4 A schematic diagram of a partial flow path of a coil heat exchanger shown;

[0041] Figure 6 A split schematic diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0042] Figure 7 for Figure 6 A schematic diagram of a partial flow path of a coil heat exchanger shown;

[0043] Figure 8 A split schematic diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0044] Fig. 9 for Figure 8 The schematic diagram of the flow path of the coil heat exchanger shown;

[0045] Fig.10 A split schematic diagram of a coil heat exchanger proposed in some embodiments of the present application;

[0046] Fig.11 for Fig.10 The schematic diagram of the flow path of the coil heat exchanger shown;

[0047] Fig.12 A split schematic diagram of a coil heat exchanger provided in some embodiments of the present application;

[0048] Fig.13 A schematic diagram of the structure of a water distribution assembly provided in some embodiments of the present application;

[0049] Fig.14 A schematic diagram of the structure of a water distribution assembly provided in some embodiments of the present application;

[0050] Fig.15 A schematic diagram of the assembly of a sealing plate, a water inlet branch pipe, a water outlet branch pipe and a water return branch pipe of a water distribution and collection assembly provided in some embodiments of the present application;

[0051] Fig.16 for Fig.15 A partial enlarged view of

[0052] Fig.17 A schematic diagram of interference sealing 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] Fig.18 A schematic diagram of a sealing plate and a water inlet branch pipe of a coil heat exchanger provided in some embodiments of the present application being sealed by a sealing ring;

[0054] Fig.19 A schematic diagram of a sealing plate of a coil heat exchanger provided in some embodiments of the present application and sealing with a water inlet branch pipe, a water outlet branch pipe and a water return branch pipe through a sealing gasket;

[0055] Fig. 20 for Fig.19 Enlarged view of the T section;

[0056] Fig.21 for Fig.19 A schematic diagram of the split water collection assembly shown;

[0057] Fig. 22 A schematic diagram of the shell body, water inlet joint and water outlet joint of the water distribution and collection assembly proposed in some embodiments of the present application;

[0058] Fig.23 for Fig. 22 Schematic diagram from another perspective;

[0059] Fig.24 for Fig. 22 A partial cross-sectional schematic diagram of the shell body, water inlet joint and water outlet joint of the water distribution and collection assembly shown in FIG.

[0060] Fig.25 A schematic diagram of the shell body, water inlet joint and water outlet joint of the water distribution and collection assembly provided in some embodiments of the present application;

[0061] Fig.26 for Fig.25 Schematic diagram from another perspective;

[0062] Fig. 27 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] Fig.28 for Fig. 27 Schematic diagram from another perspective;

[0064] Fig.29 This is a schematic diagram of the assembly of a coil heat exchanger and a fan according to some embodiments of the present application;

[0065] Fig.30 Schematic diagram of the assembly of coil heat exchangers and fans according to other embodiments of the present application.

[0066] The reference numerals are as follows:

[0067] 10. Coil heat exchanger;

[0068] 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 116, second communication port; 117, third communication 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-port; 132, second through-port; 133, third through-port; 140, water inlet joint; 150, water outlet joint; 160, exhaust assembly; 170, drainage assembly; 180, semicircular pipe;

[0069] 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, housing; 231, air outlet; 232, end plate; 240, fin;

[0070] 310, water inlet branch pipe; 320, water outlet branch pipe; 330, return branch pipe; 331, first return branch pipe; 332, second return branch pipe;

[0071] 20. Fan;

[0072] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0073] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the 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. On the contrary, these embodiments are provided in order 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.

[0074] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments 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 "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence 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 interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0075] 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, 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.

[0076] For ease of description, spatial 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 figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0077] like Figures 1 to 30As shown, according to the embodiment of the present application, a coil heat exchanger 10 is proposed, including a water distribution assembly 100 and a heat exchange assembly 200. The heat exchange assembly 200 includes a plurality of coils 210, each of which has a water inlet end 211 and a water outlet end 212, the pipe opening on the water inlet end 211 is a water inlet, and the pipe opening on the water outlet end 212 is a water outlet, the water distribution assembly 100 is connected to the water inlet end 211 of each coil 210, and the water distribution assembly 100 is also connected to the water outlet end 212 of each coil 210.

[0078] The coil heat exchanger 10 is usually used in combination 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 airflow so that the airflow flows through the coil heat exchanger 10. When the airflow flows through the coil heat exchanger 10, the airflow exchanges heat with the water in the coil heat exchanger 10.

[0079] The heat exchange assembly 200 is a main component for heat exchange. Specifically, the heat exchange assembly 200 performs heat exchange between water flowing in 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 pipeline group flowing from the water inlet channel 101 to the water outlet channel 102. The water inlet of each coil 210 can be one, two or more than two, and the water outlet of each set of coils 210 can also be one, two or more than two. For example, in some embodiments, at least one coil 210 has one water inlet pipe and multiple water outlet pipes, and the multiple water outlet pipes are all connected and communicated with the water inlet pipe. Among them, each coil 210 has at least one reflux. In simple terms, 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.

[0080] The water distribution and collection assembly 100 provided in this embodiment includes a shell 110, a plurality of water inlet branch pipes 310 and a plurality of water outlet branch pipes 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 plurality of water inlet branch pipes 310 are arranged at intervals, and the inlet end of the water inlet branch pipe 310 is connected to the shell 110 and communicated with the water inlet channel 101. The water inlet branch pipe 310 is directed from the inlet end to the outlet end in a direction away from the shell 110. 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; a plurality of the 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.

[0081] The water inlet of each coil 210 is connected to the water inlet channel 101 of the water distribution and collection assembly 100 through 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 through the water outlet branch pipe 320. In some implementations, the water outlet ends 212 of the plurality of 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 plurality of coils 210 may be connected and connected to the water inlet branch pipe 310 in a one-to-one correspondence.

[0082] The housing 110 is provided with a total water inlet communicating with the water inlet channel 101, and the housing 110 is also provided with a total water outlet communicating with the water outlet channel 102, and the total water inlet and the total water outlet are located on the same side of the housing 110. Exemplarily, the total water outlet and the total water inlet can be arranged on the side of the housing 110 away from the heat exchange component 200, and the water inlet branch pipe 310 and the water outlet branch pipe 320 are both arranged on the side of the housing 110 facing the heat exchange component 200. A water inlet joint 140 can be arranged at the total water inlet, and a water outlet joint 150 can be arranged at the total water outlet. Among them, the water inlet joint 140 can be connected to the part of the water distribution and collection component 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 and collection component 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 component 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.

[0083] The water distribution and collection component 100 may be provided with a plurality of first connecting ports 115 corresponding to the water inlet channel 101, and the plurality of first connecting ports 115 are connected to the inlet end of the water inlet branch pipe 310. Specifically, one first connecting port 115 may be connected to the inlet end of one water inlet branch pipe 310. Specifically, the inlet end of the water inlet branch pipe 310 may be plugged and sealedly connected to the first connecting port 115. For example, the inlet end of the water inlet branch pipe 310 may be inserted into the first connecting port 115 and sealedly connected to 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, and 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 for heat exchange flows into the water inlet channel 101, it is divided to each water outlet branch pipe 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 pipe 320, and then flows through each coil 210 respectively, and then flows out through the water outlet of the water outlet end 212 of each coil 210 and the return branch, and is collected to 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 .

[0084] According to the water distribution and collection assembly 100 and the 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 through the water inlet branch pipe 310, and the water outlet channel 102 is connected to the water outlet end 212 of the coil 210 through the water outlet branch pipe 320, so that water can flow from the water inlet channel 101 through multiple water inlet branches 310 into multiple coils 210, and after flowing through multiple coils 210, it flows back to the water outlet channel 102 through multiple water outlet branches 320. By integrating the water inlet channel 101 and the water outlet channel 102 into 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 the production cost.

[0085] In some technologies, a 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, a 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. Among them, the water diversion joint, water collection joint, and branch pipe are independent parts. Thus, the water diversion joint and the branch pipe connected thereto, the water outlet structure and the branch pipe connected thereto, the branch pipe and the inlet of the heat exchange tube, and the branch pipe and the water outlet of the heat exchange tube all need to be assembled. There are many parts, and the structural assembly process is cumbersome, time-consuming and labor-intensive, which has a great impact on the preparation cost of the coil heat exchanger. Moreover, the water inlet assembly (the water diversion joint and the corresponding branch pipe form the water inlet assembly) and the water outlet assembly (the water collection joint and the corresponding branch pipe form the water outlet assembly) are welded and assembled separately, which is easy to deform, so an additional mounting plate needs to be added to fix them. The water diversion joint and the water collection joint are usually disc-shaped, which is smaller than the layout range of the inlet and outlet of multiple heat exchange tubes, so the branch pipes are mostly long curved branches, which occupy a large space. At the same time, due to the scattered and large number of parts, the water diversion and collection assembly occupies a large invalid space, the parts are messy, the aesthetics is poor, and it is not conducive to the integrated design of the coil heat exchanger. Furthermore, 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.

[0086] The water distribution and collection assembly 100 of this embodiment integrates the water inlet channel 101 and the water outlet channel 102, and does not need to independently set scattered water distribution joints and water collection joints, the number of parts is reduced, and the components are not easily deformed, which is conducive to the orderly arrangement of the water distribution and collection assembly 100, reducing the degree of clutter of parts, reducing the invalid space occupied by parts, and improving the integration and aesthetics of the coil heat exchanger 10. Further, the shell 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 arranged at one end of the heat exchange assembly 200, so that the water distribution and collection assembly 100 can cover the water inlet end 211 and the water outlet end 212 of all the coils 210, the water inlet branch pipe 310 and the water outlet branch pipe 320 can be directly connected to the water inlet end 211 and the water outlet end 212 of the coil 210, and the water inlet branch pipe 310 and the water outlet branch pipe 320 can be straight pipes, with simple structure, convenient assembly, short water flow process, reduced water resistance, and conducive to improving heat exchange efficiency.

[0087] In some embodiments, the coil 210 of the heat exchange assembly 200 may be provided with fins 240 outside, that is, the coil heat exchanger 10 may be a fin-tube heat exchanger, and the coil 210 exchanges heat with the airflow through the fins 240, which can improve the heat exchange efficiency of the heat exchanger. The fins 240 may be connected to the coil 210 by expansion, welding, etc. 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. The number of fins 240 may be multiple, and the multiple fins 240 may be arranged at intervals. For example, the multiple fins 240 may be arranged at intervals on the coil 210 along the first direction X.

[0088] Optionally, the heat exchange component 200 may also be provided with a housing 230, and the plurality of coils 210 are all provided in the housing 230, one side of the housing 230 (defined as the first side for ease of description) is provided with an air inlet, and the side of the housing 230 opposite to the air inlet (defined as the second side for ease of description) is provided with an air outlet 231. The water distribution component 100 may be provided at one end of the housing 230.

[0089] 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 shell 230 does not have a side wall 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 shell 230 does not have a side wall on the second side surface to form an air outlet 231. Fig.29 and Fig.30 In the figure, the second side is completely hollowed out to form an air outlet 231. To simplify the drawings, Fig.29 and Fig.30 The actual structure of the coil heat exchanger 10 is only shown at a partial position of the second side surface, and the entire internal structure of the coil heat exchanger is not shown.

[0090] The housing 230 may be a substantially rectangular parallelepiped structure, and the water distribution and collection assembly 100 may be disposed at one end of the housing 230 in the length direction. The air inlet and the air outlet 231 may also be disposed on two adjacent side surfaces of the housing 230 .

[0091] The water inlet branch pipe 310 and the water outlet branch pipe 320 of the water distribution and collection assembly 100 of this embodiment 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.

[0092] Specifically, in one implementation, a plurality of first connecting ports 115 and a plurality of second connecting ports 116 are provided on the first side wall of the shell 110, the plurality of first connecting 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 connecting 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 connecting port 115, and the inlet end of the water outlet branch pipe 320 is sealedly connected to the second connecting port 116.

[0093] Among them, a plurality of first communication ports 115 may be arranged at intervals, and each first communication port 115 is correspondingly and sealedly connected to the inlet end of the water inlet branch pipe 310, and is communicated with the water inlet channel 101. That is to say, the inlet ends of all water inlet branch pipes 310 may be respectively and one by one connected to all first communication ports 115, and the circumferential side wall of the inlet end of the water inlet branch pipe 310 is sealedly connected to the circumferential wall of the first communication port 115 to prevent water from leaking between the inlet end and the first communication port 115, and the inlet end is communicated with the water inlet channel 101. A plurality of second communication ports 116 may be arranged at intervals, and each second communication port 116 is correspondingly and sealedly connected to the outlet end of the water outlet branch pipe 320, and is communicated 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 one by one, 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 channels 102.

[0094] The shell 110 of this embodiment may be substantially rectangular or elliptical, which matches the end of the heat exchange assembly 200 .

[0095] In some implementations, the first side wall may be a side wall of the housing 110 facing the outer shell 230, and the first side wall may be partially hollowed out to form a first communication port 115 and a 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 to 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 to the circumferential inner wall of the second communication port 116.

[0096] The shell 110 may 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, and the notch of the first groove 113 and the notch of the second groove 114 are both in the same direction as the first opening 1111, and the sealing plate 112 is sealed to the first opening 1111, and is enclosed with the first groove 113 to form the water inlet channel 101, and is enclosed with 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, that is, the sealing plate 112 is the first side wall of the shell 110 facing the heat exchange component 200.

[0097] The sealing plate 112 may be fixedly connected to the housing 230 of the heat exchange assembly 200. Specifically, in one implementation, Figure 2 , Figure 3 As shown, an end plate 232 may be provided at one end of the housing 230 connected to the sealing plate 112. Since the upper water collection assembly 100 bears an important water flow distribution function, its sealing and pressure resistance requirements are relatively high. The housing 230 is provided with an end plate 232. The forces of shaking, falling, and impacting of the whole machine during transportation, handling, and installation can be borne by the end plate 232 and will not be transmitted to the water collection assembly 100, so that the sealing effect and pressure bearing capacity of the water collection assembly 100 can be maintained. 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 and connected. The coil 210 and the end plate 232 of the shell 110 can be a non-sealed structure, and the end plate 232 is connected to other structural parts of the whole machine to play a role in structural fixing. The end plate 232 of the housing 230 and the housing 230 can be an integrated structure, or of course, a split assembly structure.

[0098] 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.

[0099] 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 what 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, it can be achieved by welding sealing, expansion sealing, glue sealing, rubber pad (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.

[0100] In some embodiments, the water distribution and collection assembly 100 further includes a sealing gasket 130 , which is sealingly disposed between the sealing plate 112 and the housing 110 .

[0101] 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.

[0102] In some implementations, such as Fig.15 and Fig.16 As shown, the sealing plate 112 can be made of metal material, 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 forms 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 a 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.

[0103] In some implementations, such as Fig.17As shown, the sealing plate 112 has an interference fit with the water inlet branch pipe 310, and the sealing plate 112 has an interference fit with the water outlet branch pipe 320. Specifically, the inner diameter of the first connecting port 115 of the sealing plate 112 (i.e., the diameter corresponding to the contact surface between the first connecting port 115 and the water inlet branch pipe 310) is less than or equal to the inlet end of the water inlet branch pipe 310 after the expansion, and the inner diameter of the second connecting port 116 of the sealing plate 112 (i.e., the diameter corresponding to the contact surface between the second connecting port 116 and the water outlet branch pipe 320) is less than or equal to the outer diameter of the outlet end of the water outlet branch pipe 320 after the 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, and the material of the sealing plate 112 can be metal, ceramic, glass, plastic, rubber, silicone, or a composite material of the above materials. The material of the water inlet branch pipe 310 and the water outlet branch pipe 320 is generally a metal pipe to improve the heat exchange efficiency. Specifically, the sealing plate 112 forms 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 a sealing connection surface 1122, and the sealing connection surface 1122 is interference fit with the water inlet branch pipe 310 or the water outlet branch pipe 320.

[0104] In some implementations, such as Fig.15 As shown, 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 pipe 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 pipe 320. The water inlet branch pipe 310 and the water outlet branch pipe 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 pipe 310 and the inner side of the first connecting port 115 of the sealing plate 112, and between the outer wall of the water outlet branch pipe 320 and the inner side of the second connecting port 116 of the sealing plate 112, thereby playing a sealing role.

[0105] In some implementations, such as Fig.18 As shown, a sealing ring 1124, such as an O-ring, is placed between the inner side of the first communication port 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 port 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 wall of the water inlet branch pipe 310, the outer wall of the water outlet branch pipe 320 and the inner wall of the communication port of the sealing plate 112 to play a sealing role. The sealing ring 1124 can be made of rubber or silicone.

[0106] In some implementations, such as Figures 19 to 21As shown, the water distribution assembly 100 also includes a sealing gasket 130, which is sealingly arranged between the sealing plate 112 and the shell 110, and the sealing gasket 130 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 to the plurality of first connecting holes 115 one by one and are coaxially arranged. The plurality of water inlet branch pipes 310 can pass through the first connecting holes 115 one by one and be sealed and connected to the first through holes 131. The plurality of second through holes 132 correspond to the plurality of second connecting holes 116 one by one and are coaxially arranged. The plurality of water outlet branch pipes 320 can pass through the second connecting holes 116 one by one and be sealed and connected to the second connecting holes 116.

[0107] 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 the like. During assembly, there is a certain gap between the contact surface of the first connecting port 115 of the sealing plate 112 and the water inlet branch pipe 310, and between the contact surface of the second connecting port 116 of the sealing plate 112 and 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 therebetween, so that part of the sealing gasket 130 material is squeezed into the gap between the water inlet branch pipe 310 and the first connecting port 115 of the sealing plate 112, and into the gap between the water outlet branch pipe 320 and the second connecting port 116, thereby playing a sealing role. At the same time, the water inlet branch pipe 310 and the first through-port 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-port 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.

[0108] 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 sealing groove surrounds the circumferential edge of the sealing gasket 130. The multiple sealing grooves are arranged at intervals along the thickness direction of the sealing gasket 130. The multiple sealing grooves can play multiple circles and multiple layers of sealing. In the scheme using the sealing gasket 130, the water inlet branch pipe 310 and the water outlet branch pipe 320 can also be connected to the sealing gasket 130 and the sealing plate 112 by expansion connection.

[0109] Furthermore, 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 wall 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.

[0110] The expansion connection refers to the way that the water inlet branch pipe 310 or the water outlet branch pipe 320 expands outward under the pressure of internal gas or liquid, etc., and then connects with the sealing plate 112. One way to realize the expansion connection of the water inlet branch pipe 310 and the water outlet branch pipe 320 can be that the water inlet branch pipe 310 and the water outlet branch pipe 320 are first assembled 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.) in the state of flat tubes, the coil 210 is connected with the water inlet branch pipe 310 and the water outlet branch pipe 320, and then the outlet end of the coil 210 is temporarily sealed, and gas is filled through the inlet end of the coil 210 to increase the pressure of the water inlet branch pipe 310 and the water outlet branch pipe 320, and the water inlet branch pipe 310 and the water outlet branch pipe 320 expand outward under the pressure and abut against the sealing plate 112 (and / or the sealing pad 130) to achieve connection.

[0111] It should be noted that the above-mentioned multiple sealing schemes can also be used in combination to form a better seal between the water inlet branch pipe 310, the water outlet branch pipe 320 and the sealing plate 112. The first connecting port 115 and the second connecting port 116 can be of the same structure, for example, both are circular holes of equal diameter. In this way, when processing and preparing the water distribution and collection assembly 100, it is not necessary to distinguish between the first connecting port 115 and the second connecting port 116, which is convenient for processing and has high efficiency. Similarly, the water inlet branch pipe 310 and the water outlet branch pipe 320 can also be of the same structure and be arranged in parallel.

[0112] 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, and specifically, the side wall (i.e., the top plate 1112) of the shell body 111 opposite to the sealing plate 112 is provided with a water inlet through hole 1114 corresponding to the water inlet channel 101, and the water inlet connector 140 is coaxially arranged and connected with the water inlet through hole 1114. The water inlet connector 140 may be a tubular member, and its inner wall or outer wall may be provided with threads, so that the water inlet connector 140 and the water outlet pipe of the heat exchange water supply system can be threadedly connected, and the water inlet connector 140 may 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 connector 140 with the water outlet pipe of the heat exchange water supply system.

[0113] Optionally, the water outlet joint 150 and the water inlet joint 140 may be arranged on the same side wall of the shell 110. For example, the water outlet joint 150 may also be connected to the side wall of the shell 110 away from the heat exchange assembly 200. Specifically, the side wall (i.e., the top plate 1112) of the shell body 111 opposite to the sealing plate 112 may be provided with a water outlet through hole 1115 corresponding to the water inlet channel 101, and the water outlet joint 150 may be coaxially arranged and communicated with the water outlet through hole 1115. The water outlet joint 150 may 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. Among them, the water outlet joint 150 can be a tubular part, and its inner wall or outer wall can be provided with threads, so that the water outlet joint 150 can be threadedly connected with 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.

[0114] In this embodiment, the water inlet joint 140 can be arranged below the water outlet joint 150 . The arrow A in the figure indicates the flow direction of water in the water distribution and collection assembly 100 .

[0115] It can be understood that the water inlet joint 140 and the water outlet joint 150 are arranged on the shell body 111, and the connection and assembly are convenient; the water inlet joint 140 and the water outlet joint 150 are arranged on the same side wall, which is beneficial to improve the rationality of the component layout of the water distribution and collection assembly 100, reduce the space occupied by the water inlet joint 140 and the water outlet joint 150 in different directions, and also facilitate the heat exchange water supply system to be connected to the water distribution and collection assembly 100 from one direction.

[0116] It should be noted that the water inlet connector 140 and the water outlet connector 150 may also be disposed on different side walls of the shell body 111 .

[0117] In some embodiments, optionally, Figure 1 and Figure 2As shown, the water inlet joint 140 and the water outlet joint 150 and the shell body 111 can be an integral structure, 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 joint 140 and the water outlet joint 150 and the shell body 111 are made of the same material. For example, the water inlet joint 140 and the water outlet joint 150 and the shell body 111 are all made of metal materials, and the water inlet joint 140 and the water outlet joint 150 and the shell body 111 are integrally formed by powder alloy sintering, sand casting, forging, or machining using the metal material; for another example, the water inlet joint 140 and the water outlet joint 150 and the shell body 111 are made of ceramic, glass, or other materials, and the water inlet joint 140 and the water outlet joint 150 are made of ceramic, glass, or other materials, and the water inlet joint 140 and the water outlet joint 150 are integrally formed by powder alloy sintering, sand casting, forging, or machining using the metal material; 150 and the shell body 111 are integrally formed by sintering or the like; for another example, the water inlet joint 140, the water outlet joint 150 and the shell body 111 are made of plastic or the like, and the water inlet joint 140, the water outlet joint 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, which is a technology based on digital model files, using powdered metal or plastic and other bondable materials to construct objects by printing layer by layer). In other implementations, the water inlet joint 140, the water outlet joint 150 and the shell body 111 are made of different materials, for example, the water inlet joint 140 and the water outlet joint 150 are made of metal materials, and the shell body 111 is made of non-metallic materials, and the water inlet joint 140 and the water outlet joint 150 are both embedded in the through hole of the shell body 111 and integrally formed by injection molding, sintering, molding or the like.

[0118] It should be noted that the metal material can be stainless steel, copper, etc. The water inlet joint 140 and the water outlet joint 150 can be made of the same material or different materials, and the water inlet joint 140 and the shell body 111 and the water outlet joint 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 joint 140 and the water outlet joint 150, in some embodiments, the water inlet joint 140 and the water outlet joint 150 are set to be made of the same material and have the same structure, and the water inlet joint 140 and the shell body 111 and the water outlet joint 150 and the shell body 111 are connected in the same manner.

[0119] 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.

[0120] In other embodiments, Figure 22 to Figure 23As shown, the water inlet joint 140 and the water outlet joint 150 can be separately arranged and assembled with the shell body 111. Specifically, the shell body 111 is provided with a water inlet through hole 1114, a water inlet channel 101, a reflux channel 121, a water outlet channel 102, and a water outlet through hole 1115. The water outlet through hole 1115 is arranged corresponding to the position of the water inlet channel 101 and is connected to the water inlet channel 101. The water outlet through hole 1115 is arranged corresponding to the water outlet channel 102 and is connected to the water outlet channel 102. The water inlet joint 140 is sealed and connected to the water inlet through hole 1114 to form a sealed connection 1116. The water outlet joint 150 is sealed and connected to the water outlet through hole 1115. Among them, the water inlet joint 140 can be welded, riveted, crimped or inlaid into the water inlet through hole 1114 to be sealed and connected with the shell body 111, and can also be sealed and connected with the shell body 111 by using rubber rings, rubber gaskets, etc.; similarly, the water outlet joint 150 can be welded, riveted, crimped or inlaid into the water outlet through hole 1115 to be sealed and connected with the shell body 111, and can also be sealed and connected with the shell body 111 by using rubber rings, rubber gaskets, etc.

[0121] The coil heat exchanger 10 has different structures of the heat exchange assembly 200 according to different use environments and requirements. For example, it can be a water distribution assembly 100 without the first water return structure 120, or it can be a water distribution assembly 100 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 can also be different. The water inlet joint 140 and the water outlet joint 150 are arranged in a form of separate assembly with the shell 110, so that the water inlet joint 140 and the water outlet joint 150 can be used as universal parts, and the water inlet joint 140 and the water outlet joint 150 can be used as standard parts, which are suitable for shell bodies 111 of different forms. In this way, the water inlet joint 140 and the water outlet joint 150 can be mass-produced automatically, with high efficiency and low cost.

[0122] In some embodiments, the water distribution assembly 100 is provided with an exhaust assembly 160, and the exhaust assembly 160 is used to discharge the gas in the water flow path. The exhaust assembly 160 can be connected to the water outlet channel 102, specifically, as Fig.14 As shown, the exhaust assembly 160 can be disposed on the water outlet connector 150; Fig.13 As shown, the exhaust component 160 can also be arranged on the shell body 111, specifically, can be arranged on the top plate 1112, and corresponds to the water outlet channel 102. The exhaust component 160 can be an exhaust valve, and the exhaust component 160 can be opened to discharge the gas in the water flow path, and the exhaust component 160 can also be closed, so that the exhaust component 160 is sealed to prevent water leakage.

[0123] In some embodiments, the water distribution and collection assembly 100 is provided with a drainage assembly 170, and the exhaust assembly 160 is used to discharge the water flow in the water flow path. The drainage assembly 170 can be connected to the water inlet channel 101, specifically, as Fig.14 As shown, the drainage assembly 170 can be disposed on the water outlet connector 150; Fig.13 As shown, the drain assembly 170 can also be arranged on the shell body 111, specifically on the top plate 1112, and corresponds to the water inlet channel 101. The drain assembly 170 can be a drain valve, and the drain assembly 170 can be opened to discharge the gas in the water flow path, and the drain assembly 170 can also be closed, so that the drain assembly 170 is sealed to prevent water leakage.

[0124] It should be noted that the positions of the exhaust component 160 and the drainage component 170 can also be interchanged. In this embodiment, the exhaust component 160 can be arranged above the drainage component 170. In this embodiment, by connecting the exhaust component 160 with the water outlet channel 102, compared with the form in which the exhaust component 160 is connected with the water inlet channel 101, the exhaust effect is better, and more gas in the heat exchange component 200 can be discharged, thereby improving the heat exchange efficiency. In this embodiment, by connecting the drainage component 170 with the water inlet channel 101, it is beneficial to discharge all the water in the heat exchange component 200 when the heat exchange component 200 is not in use.

[0125] 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 water flow direction, at different positions, the number of heat exchange tubes can be different. For example, the outlet of an inlet pipe can be connected to multiple outlet pipes, or the outlets of multiple inlet pipes can be connected to the same inlet pipe, or one inlet pipe can be connected to one outlet pipe, etc. All heat exchange tubes in the multiple heat exchange sections can have approximately the same length, and the two ends of all heat exchange tubes are arranged approximately aligned, and the multiple heat exchange sections form a coil 210 structure that bends and folds in sequence.

[0126] In one implementation, Figure 2 , Figure 3 As shown, any heat exchange tube of the multiple heat exchange sections is arranged along the first direction X, the first ends of all the heat exchange tubes along the first direction X can be roughly aligned, the second ends of all the heat exchange tubes along the first direction X are roughly aligned, and the multiple heat exchange tubes are arranged at intervals along the second direction Y and the third direction Z. The water distribution assembly 100 is arranged at the first end of the heat exchange tube along the first direction X, and the first ends of the heat exchange tubes of the first heat exchange section of the multiple heat exchange tubes are all connected to the water inlet branch pipe 310, as shown in FIG. Figures 4 to 11As shown, the water flow entering the water inlet channel 101 flows along the path B from the water inlet channel 101 through the multiple water outlet branches 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 end 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 Figure 8 As shown, 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 pipe, and then flows back to the outlet channel 102 through the outlet branch pipe 320. This process can also be referred to Fig. 9 In other embodiments, as shown in FIG. Fig.10 and Fig.11 As shown, the process of the heat exchange assembly 200 is relatively long, and the first end of the second heat exchange section can be connected to the first end of the third heat exchange section, and the water flows along Fig.10 The path C flows 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 to form a second reflux. The first end of the fourth heat exchange section can be connected to the water outlet branch pipe 320, and the water flows along Fig.10 The water 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). The process can also be referred to Fig.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 can refer to the circulation arrangement of the first section and the fourth section. For example, each coil 210 is provided with three long U-shaped tubes. Figure 4 As shown, the water flowing out of the first long U-shaped tube 201 flows out of the first long U-shaped tube 201 along the path C1 and flows through the first reflux channel 1211 and then flows 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 the path C2 and flows through the second reflux channel 1212 and then flows to the third long U-shaped tube 203. The water flowing out of the second long U-shaped tube 202 flows along the path C3 and flows through the second reflux channel 1212 and then flows to the third long U-shaped tube 203. Figure 4After the water flows back to the outlet branch pipe 320, it flows into the outlet channel 102. The water flow process can also be referred to Figure 5 The water flow path A2 is shown.

[0127] Among them, one reflux is also a process. Specifically, one reflux refers to a return 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 needs to pass through the above two return flow paths. Similarly, three or more refluxes are return flow paths that the water flow needs to pass through a corresponding number of times.

[0128] 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 as one, or a long U-shaped tube structure injection molded as 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 connecting portion of each long U-shaped tube is located at the second end.

[0129] It should be noted that the connection of each coil 210 at the second end can also be achieved by providing a second water return structure of an integrated structure. The second water return structure is provided at the second end of the heat exchange assembly 200 along the first direction X, and 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 downstream heat exchange tube adjacent to the water flow direction are both connected to the water return cavity. A plurality of coils 210 may share a second water return structure. Specifically, a plurality of water return chambers may be provided on the second water return structure. The second ends of two adjacent sections of heat exchange tubes in the same coil 210 may be connected through a water return chamber. In one reflux, when the pressures at the second ends of the plurality of coils 210 are the same, in the same reflux, the second ends of adjacent heat exchange tubes of the plurality of coils 210 may share a water return chamber. For example, all the coils 210 include one reflux, the second water return structure may be provided with a water return chamber, and the second ends of the first heat exchange sections of all the coils 210 are connected to the second ends of the second heat exchange sections through the water return chamber. For another example, all the coils 210 include two refluxes, the second water return structure may be provided with two spaced and independent water return chambers, and the second ends of the first heat exchange sections of all the coils 210 are connected to the second ends of the second heat exchange sections through one of the water return chambers. The second ends of the third heat exchange sections of all the coils 210 are connected to the second ends of the fourth heat exchange sections through another water return chamber.

[0130] It should be noted that, in this embodiment, unless otherwise specified, each coil 210 is formed by a long U-shaped tube or a plurality of long U-shaped tubes are connected in sequence, 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, wherein the number of refluxes of the coil 210 is consistent with the number of U-shaped tubes. Figure 8 and Fig. 9 As shown, when there is a single 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, Fig.10 and Fig.11 In the case of 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, Figures 4 to 5 As shown, when there are two reflows, 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.

[0131] When the coil 210 has two or more backflows, along the water flow direction, such as Fig.12 As shown, the first end of the upstream heat exchange section and the first end of the downstream heat exchange section can be connected by an additional joint, such as a semicircular tube 180 or a U-shaped joint, that is, in the two long U-shaped tubes, the outlet of the upstream long U-shaped tube and the outlet of the downstream long U-shaped tube can be connected by a joint. Figure 4 , Figure 6 and Figure 8 As shown, in some embodiments, a first water return structure 120 can also be set on the water distribution assembly 100, so that the first end of the upstream heat exchange section is connected with the first end of the downstream heat exchange section through the first water return structure 120, that is, the outlet of the upstream long U-shaped tube is connected with the outlet of the downstream long U-shaped tube through the first water return structure 120.

[0132] It should be noted that the upstream and downstream in the coil 210 are defined with reference to the water flow direction, wherein along the water flow direction, 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.

[0133] In one embodiment, a first water return structure 120 is further provided in the water distribution and collection assembly 100, and the first water return structure 120 is provided with a reflux channel 121, and 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 reflux branch pipe 330 is connected to the shell 110 and communicates with the reflux channel 121, and 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 shell 110 and extends away from the shell 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.

[0134] The water inlet channel 101 can be arranged on one side of the first water return structure 120, and the water outlet channel 102 can be arranged on the other side of the first water return structure 120. That is to say, the first water return structure 120 is arranged 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 collection assembly 100 is formed with a receiving cavity 1117, the first water return structure 120 is arranged in the receiving cavity 1117, and the first water return structure 120 separates the receiving cavity 1117 into the water outlet channel 102 and the water inlet channel 101.

[0135] It is understandable that when the coil 210 has two or more refluxes, a return branch pipe may be used, and the return branch pipe is connected to the outlet or inlet of the long U. For a first coil 220, the inlet branch pipe 310 may be connected to the inlet of the first heat exchange tube 221 in the first coil 220, and the outlet of the first heat exchange tube 221 may be connected to the inlet of the second heat exchange tube 222 of the first coil 220 through the first outlet branch pipe 320, the first return water structure 120 and the second outlet branch pipe 320, and the outlet of the second heat exchange tube 222 is connected to the outlet branch pipe 320.

[0136] The first coil 220 is actually a coil 210 with two or more refluxes. Some of the coils 210 may be the first coil 220, and the other may be the coil 210 with only one reflux. Alternatively, all the coils 210 may be the first coil 220.

[0137] The first heat exchange tube 221 and the second heat exchange tube 222 can be understood as two heat exchange tubes connected and communicated with each other at the first ends in the first direction X. Fig.10 and Fig.11 As shown, when the first coil 220 has two 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) can be used 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 group of first reflux branch pipes 331, the first water return structure 120, and the second reflux branch pipes 332. For another example, Figure 4 and Figure 5 As shown, when the first coil 220 has three reflows, 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) form 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) form the first heat exchange tube 221 and the second heat exchange tube 222. 22. 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.

[0138] It should be noted that the first reflux branch pipe 331 is also the reflux branch pipe 330 connected to the first heat exchange tube 221, and the second reflux branch pipe 332 is also the water flow branch pipe connected to the second heat exchange tube 222. The water flow in the first reflux branch pipe 331 usually flows into the reflux channel 121, and the water flow in the second reflux branch pipe 332 usually comes from the reflux channel 121. All reflux branches 330 can be of the same structure, and the reflux branch pipe 330, the water inlet branch pipe 310 and the water outlet branch pipe 320 can all be of the same structure and arranged in parallel to each other to improve the processing convenience of the water distribution and collection assembly 100. Among them, the reflux branch pipe 330, the water inlet branch pipe 310 and the water outlet branch pipe 320 can all be consistent with the extension direction of the long U-shaped tube.

[0139] In actual arrangement, all heat exchange tubes in the heat exchange assembly 200 that need to be interconnected at the first end may 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, multiple reflux channels 121 arranged at intervals may be correspondingly provided on the first water return structure 120, so that the multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 are connected through different reflux channels 121, respectively. When there are two groups of multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 or the pressure difference between the two groups is the same, a larger reflux channel 121 may also be provided on the first water return structure 120, and multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 may be connected through one reflux channel 121.

[0140] 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 .

[0141] Among them, Fig.10 and Fig.11 As shown, the multiple groups of first heat exchange tubes 221 and second heat exchange tubes 222 are connected through the first return channel 1211, and the multiple first heat exchange tubes 221 are isobaric channels, and the multiple second heat exchange tubes 222 are isobaric channels. The first heat exchange tubes 221 and the second heat exchange tubes 222 in the same return flow of the 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 of the first coil 220 minus one. For example, Fig.10 and Fig.11As shown, when all the first coils 220 are backflowed twice, the first water return structure 120 can be provided with a reflux channel 121. In all the first coils 220: the heat exchange tubes in the second heat exchange section are connected with the heat exchange tubes in the third heat exchange section through the reflux channel 121, that is, all the return water branches are connected with the reflux channel 121. For another example, when all the first coils 220 are thrice refluxed, the first water return structure 120 may be provided with two independent reflux channels 121, in all the first coils 220: the heat exchange tubes in the second heat exchange section are connected with the heat exchange tubes in the third heat exchange section through one of the reflux channels 121, that is, all the return water branches connecting the second heat exchange section and the third heat exchange section are connected with the reflux channel 121; the heat exchange tubes in the fourth heat exchange section are connected with the heat exchange tubes in the fifth heat exchange section through another reflux channel 121, that is, all the return water branches connecting the fourth heat exchange section and the fifth heat exchange section are connected with the other reflux channel 121.

[0142] In other embodiments, Figure 4 , Figure 5 Combined with Figure 6 and Figure 7 As shown, at least two of the multiple coils 210 are first coils 220, the first water return structure 120 is provided with multiple return channels 121, and return channels 121 are provided one by one between the multiple first heat exchange tubes 221 and the corresponding second heat exchange tubes 222. That is, each group of first heat exchange tubes 221 and the second heat exchange tubes 222 connected at the first end thereof correspond to one return channel 121, and the return channel 121 is only connected to one group of first heat exchange tubes 221 and the second heat exchange tubes 222 connected at the first end thereof.

[0143] In a specific embodiment, referring to Figure 6 and Figure 7 As shown, the plurality of coils 210 include a first coil 220 with two refluxes, so that each first coil 220 includes a set of first heat exchange tubes 221 and second heat exchange tubes 222, and 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. Figure 6 and Figure 7 In the embodiment, not only the first coil 220 with two refluxes is included, but at least one coil 210 is a U-shaped tube, that is, the coil 210 has only one reflux, and the water flow in the coil 210 is along Figure 6 The flow paths B and D are shown, and the process can also be referred to Figure 7 The water flow path A3 is understood.

[0144] In another specific embodiment, Figure 4 and Figure 5 As shown, the plurality of coils 210 are first coils 220 with three recirculations. Thus, each first coil 220 includes two groups of first heat exchange tubes 221 and second heat exchange tubes 222 , and the first water return structure 120 is provided with two recirculation channels 121 corresponding to each first coil 220 .

[0145] The first water return structure 120 may be formed on the isolation member 124 . For example, a reflux groove 1241 is disposed inside the isolation member 124 . The reflux groove 1241 cooperates with the inner wall surface of the housing 110 to form the reflux channel 121 .

[0146] In the scheme with multiple reflux channels 121, as Figure 4 and Figure 6 As shown, the first water return structure 120 includes a plurality of protrusions 122 arranged at intervals, and adjacent protrusions 122 are connected by partitions 123, and the protrusions 122 and the partitions 123 are both connected to the inner wall surface of the shell 110, and each of the protrusions 122 is provided with the return channel 121. Among them, the protrusions 122 and the return channels 121 can be arranged one by one, and multiple return channels 121 can also be arranged on one protrusion 122 as needed. When the number of protrusions 122 is large, in order to improve the space utilization, the length direction of some protrusions 122 can be inclined relative to the top plate 1112 of the shell body 111 (a part of the shell 110 of the water distribution and collection assembly 100), and along the height direction of the shell body 111 (refer to the third direction Z), the inclination directions of two adjacent protrusions 122 can be opposite, so that the adjacent protrusions 122 are staggered, so that multiple protrusions 122 can be arranged in a smaller space, thereby realizing the setting of a larger number of return channels 121. The partition 123 and the protrusion 122 are sealed. Specifically, the partition 123 and the protrusion 122 can be an integral structure, and the partition 123, the protrusion 122 and the shell body 111 can also be an integral structure.

[0147] It should be noted that when there are three or more refluxes in a first coil 220, a reflux channel 121 may be provided for the first heat exchange tube 221 and the second heat exchange tube 222 at the first end corresponding to 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.

[0148] The first water return structure 120 of the present embodiment may be an integrated structure. Specifically, the first water return structure 120 may be an integrated structure formed by injection molding or a integrated structure formed by welding.

[0149] 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 are injection molded into an integral structure. Among them, 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 which case the first water return structure 120 and the shell body 111 can be welded or powder alloy sintered 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 material or glass material, in which 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 material, in which 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.

[0150] In some other embodiments, such as Fig.25 As shown, the shell body 111 may include a circumferential frame 1113 and a top plate 1112. The top plate 1112 is connected to one end of the circumferential frame 1113 that faces away from the sealing plate 112. The circumferential frame 1113 is sealed and connected to the top plate 1112, and the two may be split assembly structures. The first water return structure 120 may be split assembled 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 use environment and requirements. For example, it can be a water distribution component 100 without the first return water structure 120, or it can be a water distribution component 100 with the first return water structure 120. In the water distribution 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 commonly used in different first return water structures 120, so that the circumferential frame 1113 can be mass-produced in batches and automatically, with high production efficiency and low cost.

[0151] In other embodiments, Fig. 27 As shown, the circumferential frame 1113 and the top plate 1112 of the shell body 111 are an integrated structure, and the first water return structure 120 is assembled separately on the top plate 1112. In this way, the shell body 111 as a whole can be used as a universal standard part. For different coil heat exchangers 10, it is only necessary to assemble different first water return structures 120 to the shell body 111, so that the shell body 111 can be used as a standard part, so that the shell body 111 can be mass-produced in batches and automatically, with high production efficiency and low cost.

[0152] It should be noted that when the first water return structure 120 is provided, the sealing plate 112 is also provided with a third connecting port 117 connected to the return channel 121, and the third connecting port 117 is sealed and connected to the corresponding return branch pipe 330. In the scheme of the sealing gasket 130, the sealing gasket 130 also has a third through hole 133 corresponding to the third connecting 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, which will not be repeated here. The first connecting port 115, the second connecting port 116 and the third connecting port 117 can all have the same structure, for example, they are all circular holes of equal diameter. In this way, when processing and preparing the water distribution and collection assembly 100, it is not necessary to distinguish between the first connecting port 115, the second connecting port 116 and the first connecting port 115, which is convenient to process and has high efficiency.

[0153] 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.

[0154] like Fig.29 and Fig.30 As shown, an embodiment of the present application further provides a HVAC device, including a fan 20 and a coil heat exchanger 10 proposed in the present application or any embodiment of the present application, wherein the fan 20 is arranged on one side of the coil heat exchanger 10 .

[0155] 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.

[0156] The HVAC equipment may also include other components, such as a heat exchange water supply system, etc. 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.

[0157] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A water distribution assembly, applied to a coil heat exchanger (10), characterized in that: include: A shell (110), wherein a water inlet channel (101) and a water outlet channel (102) which are isolated from each other are formed in the shell (110), a total water inlet which is in communication with the water inlet channel (101) is provided on the shell (110), and a total water outlet which is in communication with the water outlet channel (102) is provided on the shell (110), and the total water inlet and the total water outlet are located on the same side of the shell (110); a plurality of water inlet branch pipes (310), the plurality of water inlet branch pipes (310) being arranged at intervals, the inlet ends of the water inlet branch pipes (310) being connected to the shell (110) and communicating with the water inlet channel (101), the water inlet branch pipes (310) extending from the inlet end to the outlet end in a direction away from the shell (110), and the outlet end of the water inlet branch pipe (310) being used to be connected to the water inlet end (211) of the coil (210) of the coil heat exchanger (10); A plurality of water outlet branch pipes (320) are arranged at intervals, the outlet ends of the water outlet branch pipes (320) are connected to the shell (110) and communicate with the water outlet channel (102), the water outlet branch pipes (320) extend 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).

2. The water distribution and collection assembly according to claim 1, characterized in that: A plurality of first communication ports (115) and a plurality of second communication ports (116) are provided on the first side wall of the shell (110); the plurality of first communication 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 communication 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 each of the water inlet branch pipes (310) is sealedly connected to one of the first communication ports (115); and the inlet end of each of the water outlet branch pipes (320) is sealedly connected to one of the second communication ports (116).

3. The water distribution and collection assembly according to claim 2, characterized in that: The shell (110) comprises a shell body (111) and a sealing plate (112), wherein the sealing plate (112) forms the first side wall, and a first opening (1111) is provided on one side of the shell body (111). The shell body (111) comprises a first groove (113) and a second groove (114) which are isolated from each other, and the orientation of the notch of the first groove (113), the orientation of the notch of the second groove (114) and the orientation of the first opening (1111) are consistent, and the sealing plate (112) is sealed at the first opening (1111). The sealing plate (112) and the first groove (113) enclose the water inlet channel (101), and the sealing plate (112) and the second groove (114) enclose the water outlet channel (102).

4. The water distribution and collection assembly according to claim 3, characterized in that: The shell body (111) is an integral structure, and / or the sealing plate (112) is an integral structure.

5. The water distribution and collection assembly according to claim 3, characterized in that: The water distribution and collection assembly (100) further comprises a sealing gasket (130), wherein the sealing gasket (130) is sealingly disposed between the sealing plate (112) and the shell body (111).

6. The water distribution and collection assembly according to claim 5, characterized in that: The sealing gasket (130) covers the first opening (1111), and is provided with a plurality of first through-holes (131) and a plurality of second through-holes (132); the first through-holes (131) correspond one-to-one with the first connecting port (115) and are coaxially arranged; the second through-holes (132) correspond one-to-one with the second connecting port (116) and are coaxially arranged; the inlet end of the water inlet branch pipe (310) passes through the first connecting port (115) and is sealedly connected to the first through-hole (131); the outlet end of the water outlet branch pipe (320) passes through the second connecting port (116) and is sealedly connected to the second through-hole (132).

7. The water distribution and collection assembly according to claim 6, characterized in that: The water inlet branch pipe (310) and / or the water outlet branch pipe (320) are connected to the sealing pad (130) and the sealing plate (112) by means of expansion connection.

8. The water distribution and collection assembly according to any one of claims 1 to 7, characterized in that: A first water return structure (120) is further provided in the housing (110), wherein the first water return structure (120) is provided with a return channel (121), and the return channel (121), the water inlet channel (101) and the water outlet channel (102) are isolated from each other; The coil heat exchanger (10) further comprises a plurality of return branch pipes (330), one end of each of the return branch pipes (330) being connected to the shell (110) and communicating with the return channel (121), and each of the return channels (121) being connected to at least two of the return branch pipes (330), and the other end of each of the return branch pipes (330) being located outside the shell (110) and extending in a direction away from the shell (110).

9. The water distribution and collection assembly according to claim 8, characterized in that: The water inlet channel (101) and the water outlet channel (102) are respectively arranged on both sides of the first water return structure (120).

10. The water distribution and collection assembly according to claim 9, characterized in that: A containing cavity (1117) is formed in the shell (110), and the first water return structure (120) is connected to the inner wall surface of the shell (110) and divides the containing cavity (1117) into the water outlet channel (102) and the water inlet channel (101).

11. The water distribution and collection assembly according to claim 8, characterized in that: The first water return structure (120) comprises an isolating member (124), the isolating member (124) being connected to the inner wall surface of the shell (110), a reflux groove (1241) being arranged in the isolating member (124), the reflux groove (1241) cooperating with the inner wall surface of the shell (110) to form the reflux channel (121).

12. The water distribution and collection assembly according to claim 11, characterized in that: The isolating member (124) comprises a plurality of protrusions (122) arranged at intervals, adjacent protrusions (122) are connected via partitions (123), the protrusions (122) and the partitions (123) are both connected to the inner wall surface of the shell (110), and the reflux channel (121) is arranged on the protrusions (122).

13. The water distribution and collection assembly according to claim 8, characterized in that: The first water return structure (120) is an integrated structure; And / or, the first water return structure (120) and the shell (110) are an integrally formed structure or a split assembly structure.

14. The water distribution and collection assembly according to any one of claims 3 to 7, characterized in that: The water distribution and collection assembly (100) further comprises a water inlet joint (140) and a water outlet joint (150); the water inlet joint (140) is arranged at the main water inlet, the water outlet joint (150) is arranged at the main water outlet, the water inlet joint (140) is in communication with the water inlet channel (101), and the water outlet joint (150) is in communication with the water outlet channel (102).

15. The water distribution and collection assembly according to claim 14, characterized in that: The water inlet joint (140) and the shell body (111) are an integral structure; And / or, the water outlet joint (150) and the shell body (111) are an integral structure.

16. The water distribution and collection assembly according to claim 14, characterized in that: The water distribution and collection assembly (100) further comprises an exhaust assembly (160), wherein the exhaust assembly (160) is in communication with the water outlet channel (102), and the water outlet connector (150) and / or the housing (110) are connected to the exhaust assembly (160); And / or, the water distribution and collection assembly (100) further comprises a drainage assembly (170), the drainage assembly (170) is in communication with the water inlet channel (101), and the water inlet joint (140) and / or the housing (110) are connected to the drainage assembly (170).

17. A coil heat exchanger, characterized in that: include: The water distribution and collection assembly (100) according to any one of claims 1 to 16; A heat exchange component (200) comprises a plurality of coils (210) and fins (240), each of the coils (210) having a water inlet end (211) and a water outlet end (212), the water inlet end (211) being connected to and in communication with the outlet end of the water inlet branch pipe (310), the water outlet end (212) being connected to and in communication with the inlet end of the water outlet branch pipe (320), and the fins (240) being connected to the coils (210).

18. The coil heat exchanger according to claim 17, characterized in that: The heat exchange component (200) further comprises an outer shell (230), the shell (110) being connected to one end of the outer shell (230), and the water outlet branch pipe (320) and the water inlet branch pipe (310) being both arranged on a first side wall of the shell (110) facing the outer shell (230).

19. The coil heat exchanger according to claim 18, characterized in that An end plate (232) is provided at one end of the outer shell (230), the housing (110) is provided on a side of the end plate (232) away from the outer shell (230), and the water inlet end (211) and the outlet end are both provided through the end plate (232).

20. The coil heat exchanger according to any one of claims 17 to 19, characterized in that: A first water return structure (120) is further provided in the housing (110), wherein the first water return structure (120) is provided with a return channel (121), and the return channel (121), the water inlet channel (101) and the water outlet channel (102) are isolated from each other; The water distribution and collection assembly (100) further comprises a first reflux branch pipe (331) and a second reflux branch pipe (332); one end of the first reflux branch pipe (331) and one end of the second reflux branch pipe (332) are both connected to the housing (110) and communicated through the reflux channel (121); At least one of the plurality of coils (210) is a first coil (220), the first coil (220) comprising a first heat exchange tube (221) and a second heat exchange tube (222), the outlet of the first heat exchange tube (221) being connected to the other end of the first reflux branch tube (331), and the inlet of the second heat exchange tube (222) being connected to the other end of the second reflux branch tube (332), so that the first heat exchange tube (221) and the second heat exchange tube (222) are connected in series.

21. A HVAC equipment, characterized in that: It comprises a fan (20) and the coil heat exchanger (10) according to any one of claims 17 to 20, wherein the fan (20) is arranged on one side of the coil heat exchanger (10).

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