CN118031276A

CN118031276A - Water collecting and distributing assembly, coil pipe heat exchanger and heating and ventilation equipment

Info

Publication number: CN118031276A
Application number: CN202410378114.3A
Authority: CN
Inventors: 叶斌; 黎举辉; 谢绍溶; 于丽君
Original assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Chongqing Midea General Refrigeration Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Current assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Chongqing Midea General Refrigeration Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-05-14

Abstract

The application relates to the technical field related to heating and ventilation components and discloses a water collecting and distributing assembly, a coil heat exchanger and heating and ventilation equipment, wherein the water collecting and distributing 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 which are mutually isolated are formed in the shell; the water inlet branch pipes are arranged at intervals, the inlet ends of the water inlet branch pipes are connected with the shell and are communicated with the water inlet channel, the water inlet branch pipes extend from the inlet ends to the outlet ends towards the direction deviating from the shell, and the outlet ends of the water inlet branch pipes are used for being connected with the water inlet ends of coils of the coil heat exchanger; the outlet end of the water outlet branch pipe is connected with the shell and communicated with the water outlet channel, the water outlet branch pipe extends from the inlet end to the outlet end towards the direction deviating from the shell, and the inlet end of the water outlet branch pipe is used for being connected with the water outlet end of the coil pipe. The water distribution and collection assembly has the advantages of simple structure, fewer parts and convenient assembly, improves the processing and assembly efficiency of the water distribution and collection assembly, and reduces the production cost.

Description

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

Technical Field

The application relates to the technical field related to heating and ventilation components, in particular to a water collecting and distributing assembly, a coil heat exchanger and heating and ventilation equipment.

Background

This section provides merely background information related to the application, which is not necessarily prior art.

At present, the water diversion scheme of the fan coil is mainly as follows: the water inlet pipe of the main system is connected with the water distribution joint, and water enters the water distribution joint from the water inlet pipe; the water diversion connector is connected with each branch water inlet branch pipe, and water is diverted to each water inlet branch pipe through the water diversion connector; each water inlet branch pipe is connected to the heat exchange pipe of each branch pipe, and water flows into the heat exchange pipe of each corresponding flow path from each branch pipe; each water outlet branch pipe is communicated with the heat exchange pipe of each flow path and is connected with the water collecting joint, and water flows out from the heat exchange pipe, flows through each water outlet branch pipe and then is collected to the water collecting joint; the water collecting joint is connected with a water outlet pipe of the main system, and water flows into the water outlet pipe of the main system through the water collecting joint and returns to the main system. The total parts of the water collecting component are more, the structure is more complex, and the assembly efficiency is lower.

Disclosure of Invention

The application aims to at least alleviate the problems of complex structure and low assembly efficiency of the water distribution and collection component. The aim is achieved by the following technical scheme:

The first aspect of the application provides a water collecting and distributing assembly, which is applied to a coil heat exchanger with fins, and comprises a shell, a plurality of water inlet branch pipes and a plurality of water outlet branch pipes, wherein a water inlet channel and a water outlet channel which are mutually isolated are formed in the shell; the water inlet branch pipes are arranged at intervals, the inlet ends of the water inlet branch pipes are connected with the shell and communicated with the water inlet channel, the water inlet branch pipes extend from the inlet ends to the outlet ends towards the direction deviating from the shell, and the outlet ends of the water inlet branch pipes are used for being connected with the water inlet ends of coils of the coil heat exchanger; the water outlet branch pipes are arranged at intervals, the outlet ends of the water outlet branch pipes are connected with the shell and communicated with the water outlet channel, the water outlet branch pipes extend from the inlet ends to the outlet ends towards the direction deviating from the shell, and the inlet ends of the water outlet branch pipes are used for being connected with the water outlet ends of the coils.

According to the water collecting and distributing assembly, the water inlet channel is communicated with the water inlet end of the coil pipe through the water inlet branch pipe, and the water outlet channel is communicated with the water outlet end of the coil pipe through the water outlet branch pipe, so that water flow can flow into the coil pipes from the water inlet channel through the water inlet branch pipes, flow into the coil pipes through the water outlet branch pipes, and flow back to the water outlet channel through the water outlet branch pipes. Through integrating water inlet channel and water outlet channel in the casing, the structure of diversity water subassembly is simple, and the part is less, and convenient assembling has improved the processing, the assembly efficiency of diversity water subassembly, has reduced manufacturing cost.

In addition, the water diversion assembly according to the application can also have the following additional technical features:

In some embodiments of the present application, a plurality of first communication ports and a plurality of second communication ports are provided on the first side wall of the housing, the plurality of first communication ports correspond to the positions of the water inlet channels and are respectively communicated with the water inlet channels, the plurality of second communication ports correspond to the positions of the water outlet channels and are respectively communicated with the water outlet channels, the inlet ends of the water inlet branch pipes are connected to the first communication ports in a sealing manner, and the inlet ends of the water outlet branch pipes are connected to the second communication ports in a sealing manner.

In some embodiments of the present application, the casing includes a casing body and a sealing plate, the sealing plate forms the first side wall, a first opening is disposed on a side of the casing body facing the heat exchange component, a first groove and a second groove are isolated from each other in the casing body, the direction of the notch of the first groove and the direction of the notch of the second groove are consistent with the direction of the first opening, and the sealing plate is sealed to the first opening and encloses with the first groove to form the water inlet channel, and encloses with the second groove to form the water outlet channel.

In some embodiments of the application, the housing body is a unitary structure and/or the seal plate is a unitary structure.

In some embodiments of the application, the water diversion assembly further comprises a gasket disposed sealingly between the seal plate and the housing body.

In some embodiments of the present application, the sealing gasket covers the first opening, the sealing gasket is provided with a plurality of first through holes and a plurality of second through holes, the first through holes are in one-to-one correspondence with the first through holes and coaxially arranged, the second through holes are in one-to-one correspondence with the second through holes and coaxially arranged, the inlet end of the water inlet branch pipe penetrates through the first through holes and is in sealing connection with the first through holes, and the outlet end of the water outlet branch pipe penetrates through the second through holes and is in sealing connection with the second through holes.

In some embodiments of the application, the water inlet branch pipe and/or the water outlet branch pipe are connected to the sealing gasket and the sealing plate in an expansion joint manner.

In some embodiments of the present application, a first water return structure is further disposed in the housing, the first water return structure is provided with a return channel, and the return channel, the water inlet channel and the water outlet channel are disposed in a mutually isolated manner;

the coil heat exchanger further comprises a plurality of backflow branch pipes, one ends of the backflow branch pipes are connected with the shell and communicated with the backflow channels, each backflow channel is at least communicated with two backflow branch pipes, and the other ends of the backflow branch pipes are located outside the shell and extend away from the shell.

In some embodiments of the present application, the water inlet channel and the water outlet channel are respectively disposed at two sides of the first water return structure.

In some embodiments of the present application, a receiving cavity is formed in the housing, and the first water return structure is connected to an inner wall surface of the housing and divides the receiving cavity into the water outlet channel and the water inlet channel.

In some embodiments of the present application, the first water return structure includes a spacer connected to an inner wall surface of the housing, and a return groove is disposed in the spacer, and the return groove cooperates with the inner wall surface of the housing to form the return channel.

In some embodiments of the present application, the spacer includes a plurality of bumps disposed at intervals, adjacent bumps are connected by a partition, the bumps and the partition are both connected to an inner wall surface of the housing, and the return channel is disposed in the bumps.

In some embodiments of the application, the first water return structure is a unitary structure;

And/or the first water return structure and the shell are of an integrated structure or a split assembly structure.

In some embodiments of the application, the water diversion assembly further comprises a water inlet joint and a water outlet joint, wherein the water inlet joint and the water outlet joint are connected to the shell body, the water inlet joint is communicated with the water inlet channel, and the water outlet joint is communicated with the water outlet channel.

In some embodiments of the application, the water inlet fitting is of unitary construction with the housing body;

and/or the water outlet joint and the shell body are of an integrated structure.

In some embodiments of the application, the water diversion assembly further comprises a vent assembly, the vent assembly is communicated with the water outlet channel, and the water outlet joint and/or the shell are/is connected with the vent assembly;

And/or, the water collecting and distributing assembly further comprises a water draining assembly, the water draining assembly is communicated with the water inlet channel, and the water inlet joint and/or the shell are/is connected with the water draining assembly.

A second aspect of the application proposes a coiled tube heat exchanger comprising a heat exchange assembly and a water diversity assembly according to the application or any embodiment of the application; the heat exchange assembly comprises a plurality of coils and fins, each coil is provided with a water inlet end and a water outlet end, the water inlet ends are connected and communicated with the outlet ends of the water inlet branch pipes, the water outlet ends are connected and communicated with the inlet ends of the water outlet branch pipes, and the fins are connected to the coils.

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

in some embodiments of the application, the heat exchange assembly further comprises a housing, the housing is connected to one end of the housing, and the outlet branch pipe and the inlet branch pipe are both arranged on a first side wall of the housing facing the housing.

In some embodiments of the present application, an end plate is disposed at one end of the housing, the shell is disposed at a side of the end plate facing away from the housing, and the water inlet end and the outlet end are both disposed through the end plate.

the water diversion assembly further comprises a first backflow branch pipe and a second backflow branch pipe, wherein one end of the first backflow branch pipe and one end of the second backflow branch pipe are connected with the shell and are communicated through the backflow channel;

At least one of the coils is a first coil, the first coil comprises a first heat exchange tube and a second heat exchange tube, an outlet of the first heat exchange tube is connected with the other end of the first backflow branch tube, and an inlet of the second heat exchange tube is connected with the other end of the second backflow branch tube, so that the first heat exchange tube is communicated with the second heat exchange tube in series.

A third aspect of the present application provides a heating ventilation device, comprising a fan, and a coil heat exchanger according to the present application or any embodiment of the present application, where the fan is disposed on one side of the coil heat exchanger.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic illustration of a water diversion assembly according to some embodiments of the present application;

FIG. 2 is a schematic illustration of a coiled tube heat exchanger according to some embodiments of the present application;

FIG. 3 is a split schematic of FIG. 2;

FIG. 4 is a schematic view of another view of FIG. 3;

FIG. 5 is a schematic, partial flow schematic diagram of the coil heat exchanger shown in FIG. 4;

FIG. 6 is a split schematic diagram of a coiled tube heat exchanger according to some embodiments of the present application;

FIG. 7 is a schematic, partial flow schematic diagram of the coil heat exchanger shown in FIG. 6;

FIG. 8 is a split schematic view of a coiled tube heat exchanger according to some embodiments of the present application;

FIG. 9 is a schematic flow diagram of the coil heat exchanger shown in FIG. 8;

FIG. 10 is a split schematic view of a coiled tube heat exchanger according to some embodiments of the present application;

FIG. 11 is a schematic flow diagram of the coil heat exchanger shown in FIG. 10;

FIG. 12 is a split schematic view of a coiled tube heat exchanger provided in some embodiments of the present application;

FIG. 13 is a schematic view of a water diversion assembly provided in some embodiments of the present application;

FIG. 14 is a schematic view of a water diversion assembly provided in some embodiments of the present application;

FIG. 15 is a schematic diagram illustrating assembly of a seal plate, a water inlet manifold, a water outlet manifold, and a water return manifold of a water distribution and collection assembly according to some embodiments of the present application;

FIG. 16 is an enlarged view of a portion of FIG. 15;

FIG. 17 is a schematic illustration of an interference seal between a seal plate of a water distribution and collection assembly and a water inlet manifold according to some embodiments of the present application;

FIG. 18 is a schematic illustration of a sealing plate of a coil heat exchanger and a water inlet manifold sealed by a sealing ring according to some embodiments of the present application;

FIG. 19 is a schematic view of a seal plate and inlet, outlet and return manifolds of a coil heat exchanger according to some embodiments of the present application sealed by gaskets;

fig. 20 is an enlarged view of a portion T of fig. 19;

FIG. 21 is a split schematic view of the water diversion assembly of FIG. 19;

FIG. 22 is a split schematic view of a housing body, a water inlet fitting, and a water outlet fitting of a water distribution sub-assembly according to some embodiments of the present application;

FIG. 23 is a schematic view of another view of FIG. 22;

FIG. 24 is a schematic partial cross-sectional view of the assembled housing body, inlet fitting and outlet fitting of the water distribution and collection assembly of FIG. 22;

FIG. 25 is a split schematic view of a housing body, a water inlet fitting, and a water outlet fitting of a water distribution assembly according to some embodiments of the present application;

FIG. 26 is a schematic view of another view of FIG. 25;

FIG. 27 is a schematic view of a split of a housing body, a first water return structure, a water inlet fitting, and a water outlet fitting of a water distribution assembly according to some embodiments of the present application;

FIG. 28 is a schematic view of another view of FIG. 27;

FIG. 29 is a schematic diagram illustrating the assembly of a coil heat exchanger and a fan in accordance with some embodiments of the present application;

Fig. 30 is a schematic diagram of an assembly of a coil heat exchanger and a fan in accordance with further embodiments of the present application.

The reference numerals are as follows:

10. A coiled tube heat exchanger;

100. A water-separating assembly; 101. a water inlet channel; 102. a water outlet channel; 110. a housing; 111. a housing body; 1111. a first opening; 1112. a top plate; 1113. a circumferential frame; 1114. a water inlet through hole; 1115. a water outlet through hole; 1116. sealing the joint; 1117. a receiving chamber; 112. a sealing plate; 1121. flanging; 1122. sealing the connecting surface; 1123. solder; 1124. a seal ring; 113. a first groove; 114. a second groove; 115. a first communication port; 116. a second communication port; 117. a third communication port; 120. a first water return structure; 121. a return passage; 1211. a first return channel; 1212. a second return passage; 122. a bump; 123. a partition plate; 124. a spacer; 1241. a reflux groove; 130. a sealing gasket; 131. a first through hole; 132. a second through hole; 133. a third through hole; 140. a water inlet joint; 150. a water outlet joint; 160. an exhaust assembly; 170. a drainage assembly; 180. a semicircular tube;

200. A heat exchange assembly; 210. a coiled pipe; 201. a first long U-shaped tube; 202. a second long U-shaped tube; 203. a third long U-shaped tube; 211. a water inlet end; 212. a water outlet end; 220. a first coil; 221. a first heat exchange tube; 222. a second heat exchange tube; 230. a housing; 231. an air outlet; 232. an end plate; 240. a fin;

310. a water inlet branch pipe; 320. a water outlet branch pipe; 330. a return branch pipe; 331. a first return branch; 332. a second return branch;

20. A blower;

X, a first direction; y, second direction; z, third direction.

Detailed Description

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations.

As shown in fig. 1-30, a coil heat exchanger 10 is provided according to an embodiment of the present application, including a water diversity assembly 100 and a heat exchange assembly 200. The heat exchange assembly 200 includes a plurality of coils 210, each coil 210 has a water inlet 211 and a water outlet 212, the nozzle on the water inlet 211 is a water inlet, the nozzle on the water outlet 212 is a water outlet, the water collecting assembly 100 is connected with the water inlet 211 of each coil 210, and the water collecting assembly 100 is also connected with the water outlet 212 of each coil 210.

The coil heat exchanger 10 is usually used in combination with a fan 20, the fan 20 may be disposed on one side of the coil heat exchanger 10, and the fan 20 is used to drive airflow to flow through the coil heat exchanger 10, so that when the airflow flows through the coil heat exchanger 10, the airflow exchanges heat with water in the coil heat exchanger 10.

The heat exchange assembly 200 is a main component for performing heat exchange, and specifically, the heat exchange assembly 200 exchanges heat between water flowing in the heat exchange assembly 200 and a medium such as air outside the heat exchange assembly 200. The plurality of coils 210 refers to two or more coils 210, each coil 210 may be understood as a pipe group flowing from the water inlet channel 101 to the water outlet channel 102, the water inlet of each coil 210 may be one, two or more, and the water outlet of each set of coils 210 may be one, two or more, for example, in some embodiments, at least one water inlet pipe of one coil 210 is one, and the water outlet pipe is multiple, and the water outlet pipes are all connected to and communicated with the water inlet pipe. Wherein each coil 210 has at least one return flow, each coil 210 includes at least two heat exchange sections, and the water flow directions of the two heat exchange sections are approximately opposite, and more specifically, it is understood that each coil 210 includes at least one long U-shaped tube.

The water collecting and distributing assembly 100 provided in this embodiment includes a housing 110, a plurality of water inlet branch pipes 310 and a plurality of water outlet branch pipes 320, wherein a water inlet channel 101 and a water outlet channel 102 which are mutually isolated are formed in the housing 110; the inlet branch pipes 310 are arranged at intervals, the inlet ends of the inlet branch pipes 310 are connected with the shell 110 and are communicated with the water inlet channel 101, the inlet branch pipes 310 extend from the inlet end to the outlet end towards the direction away from the shell 110, and the outlet ends of the inlet branch pipes 310 are used for being connected with the inlet ends 211 of the coils 210 of the coil heat exchanger 10; the plurality of water outlet branch pipes 320 are arranged at intervals, the outlet ends of the water outlet branch pipes 320 are connected with the shell 110 and are communicated with the water outlet channel 102, the water outlet branch pipes 320 extend from the inlet ends to the outlet ends towards the direction away from the shell 110, and the inlet ends of the water outlet branch pipes 320 are used for being connected with the water outlet ends 212 of the coils 210.

Wherein, the water inlets of each coil 210 are communicated with the water inlet channel 101 of the water collecting and distributing assembly 100 through the water inlet branch pipes 310, and the water outlets of each coil 210 are communicated with the water outlet channel 102 of the water collecting and distributing assembly 100 through the water outlet branch pipes 320. In some implementations, the water outlet ends 212 of the plurality of coils 210 are connected to and communicate with the water outlet branch pipes 320 in a one-to-one correspondence, and the water inlet ends 211 of the plurality of coils 210 are connected to and communicate with the water inlet branch pipes 310 in a one-to-one correspondence.

The shell 110 is provided with a total water inlet communicated with the water inlet channel 101, the shell 110 is also provided with a total water outlet communicated with the water outlet channel 102, and the total water inlet and the total water outlet are positioned on the same side of the shell 110. For example, the total water outlet and the total water inlet may be provided at a side of the housing 110 facing away from the heat exchange assembly 200, and the water inlet branch pipe 310 and the water outlet branch pipe 320 are provided at a side of the housing 110 facing toward the heat exchange assembly 200. A water inlet joint 140 may be provided at the general water inlet and a water outlet joint 150 may be provided at the general water outlet. The water inlet joint 140 can be connected with the part of the water collecting and distributing assembly 100 forming the water inlet channel 101 and is communicated with the water inlet channel 101, and the water outlet of the heat exchange water supply system is connected with the water inlet joint 140 and supplies water to the water inlet channel 101 through the water inlet joint 140; the water outlet joint 150 can be connected with the part of the water collecting and distributing assembly 100 forming the water outlet channel 102 and communicated with the water outlet channel 102, the water inlet of the heat exchange water supply system is connected with the water outlet joint 150, and water flow in the heat exchange assembly 200 flows back to the heat exchange water supply system through the water outlet joint 150. The heat exchange water supply system is used for heating or cooling water flow, and when the heat exchange assembly 200 is used for providing heating for the environment, the heat exchange water supply system heats the water flow so as to provide hot water for the heat exchange assembly 200, and the heat exchange water supply system can be provided with a heating device, such as a gas heating device, an electric heating tube and the like, so as to heat the water flow; when the heat exchange assembly 200 is used for providing refrigeration for the environment, the heat exchange water supply system can cool the water flow, and the heat exchange water supply system can be specifically provided with a cooling device, such as an evaporator, and the like, to cool the water flow.

The water collecting and distributing assembly 100 may be provided with a plurality of first communication ports 115 corresponding to the water inlet channels 101, and the plurality of first communication ports 115 are connected with the inlet ends of the water inlet branch pipes 310, specifically, one first communication port 115 may be connected with the inlet end of one water inlet branch pipe 310, specifically, the inlet end of the water inlet branch pipe 310 may be connected with the first communication ports 115 in a plugging and sealing manner, for example, the inlet end of the water inlet branch pipe 310 may be plugged into the first communication ports 115 and connected with the first communication ports 115 in a sealing manner. The water collecting and distributing assembly 100 may be provided with a plurality of second communication ports 116 corresponding to the water outlet channels 102, where the plurality of second communication ports 116 are connected to the outlet ends of the water outlet branch pipes 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 connected to the second communication port 116 in a plugging and sealing manner, for example, the outlet end of the water outlet branch pipe 320 may be inserted into the second communication port 116 and connected to the second communication port 116 in a sealing manner. After flowing into the water inlet channel 101 for heat exchange, the water flows into each water outlet branch pipe 320 through the water inlet channel 101, flows into the water inlets of the water inlet ends 211 of the coils 210 through the water outlet branch pipes 320, flows through each coil 210 respectively, flows out through the water outlets of the water outlet ends 212 of the coils 210 and the backflow branches, flows into the water outlet channel 102, and flows out through the water outlet channel 102. Wherein the water stream exchanges heat with the air as it passes through each coil 210.

According to the water diversion and collection assembly 100 and the coil heat exchanger 10 of the present application, the water inlet channel 101 is communicated with the water inlet end 211 of the coil 210 through the water inlet branch pipe 310, the water outlet channel 102 is communicated with the water outlet end 212 of the coil 210 through the water outlet branch pipe 320, so that water flow can flow from the water inlet channel 101 into the plurality of coils 210 through the plurality of water inlet branch pipes 310, flow through the plurality of coils 210 and then flow back to the water outlet channel 102 through the plurality of water outlet branch pipes 320. By integrating the water inlet channel 101 and the water outlet channel 102 in the shell 110, the water collecting and distributing assembly 100 has the advantages of simple structure, fewer parts and convenient assembly, improves the processing and assembling efficiency of the water collecting and distributing assembly 100, and reduces the production cost.

In some technologies, the coil heat exchanger is connected with a plurality of branch pipes through a water diversion connector, the plurality of branch pipes are connected with the water inlets of the heat exchange pipes, and meanwhile, the water collection connector is connected with the plurality of branch pipes, so that the heat exchange pipes are connected with the water collection connector through the branch pipes, and water in the plurality of heat exchange pipes is collected and shunted. The water diversion connector, the water collection connector and the branch pipe are independent parts, so that the water diversion connector, the branch pipe connected with the water diversion connector, the water outlet structure and the branch pipe connected with the water diversion connector, the inlet of the branch pipe and the inlet of the heat exchange pipe and the water outlet of the heat exchange pipe are all required to be assembled, the parts are more, the structure assembling process is complicated, time and labor are wasted, and the influence on the preparation cost of the coil heat exchanger is larger; the water inlet component (the water diversion joint and the corresponding branch pipe form the water inlet component) and the water outlet component (the water collection joint and the corresponding branch pipe form the water outlet component) are welded and assembled separately, so that the water inlet component is easy to deform, and an additional mounting plate is needed to be added for fixing; the water diversion joint and the water collection joint are usually disc-shaped, and are smaller than the arrangement range of the inlets and the outlets of the heat exchange tubes, so that the branch pipes are mostly bent long branch pipes, and the occupied space is large. Meanwhile, as the parts are scattered and more, the water distribution and collection assembly occupies larger invalid space, the parts are disordered, the attractiveness is poor, and the integrated design of the coil heat exchanger is not facilitated. Furthermore, the water flow flowing into the heat exchange tube flows out of the water collecting joint and then needs to flow through the bent branch pipe to enter the heat exchange tube, and the water flow flowing out of the heat exchange tube flows out of the heat exchange tube and then also needs to flow back through the bent branch pipe, so that the tube side of the heat exchange assembly is long and the water resistance is large.

The water collecting and distributing assembly 100 of the embodiment is integrated with the water inlet channel 101 and the water outlet channel 102, and the scattered water distributing joints and the water collecting joints are not required to be independently arranged, so that parts are reduced, components are not easy to deform, the water collecting and distributing assembly 100 is orderly arranged, the messy degree of the parts is reduced, the dead space occupied by the parts can be reduced, and the integration degree and the attractiveness of the coil heat exchanger 10 are improved. Further, the housing 110 of the water diversion and collection assembly 100 of the present embodiment may be substantially matched with the end surface of the heat exchange assembly 200 and disposed at one end of the heat exchange assembly 200, so that the water diversion and collection assembly 100 may cover the water inlet ends 211 and the water outlet ends 212 of all the coils 210, the water inlet branch pipes 310 and the water outlet branch pipes 320 may be directly connected with the water inlet ends 211 and the water outlet ends 212 of the coils 210, and the water inlet branch pipes 310 and the water outlet branch pipes 320 may be straight pipes.

In some embodiments, fins 240 may be disposed in addition to the coil 210 of the heat exchange assembly 200, that is, the coil heat exchanger 10 may be a fin-tube heat exchanger, and the heat exchange efficiency of the heat exchanger may be improved by exchanging heat between the coil 210 and the air flow through the fins 240. Wherein, the fins 240 may be connected to the coil pipe 210 by expansion, welding, etc., and in some implementations, the fins 240 are provided with mounting holes, and the coil pipe 210 is inserted into the mounting holes, so that the fins 240 are sleeved on the coil pipe 210. The number of fins 240 may be plural, and the plurality of fins 240 may be spaced apart, for example, the plurality of fins 240 may be spaced apart on the coil 210 along the first direction X.

Optionally, the heat exchange assembly 200 may further be provided with a housing 230, where the plurality of coils 210 are disposed in the housing 230, one side (for convenience of description, the first side) of the housing 230 is provided with an air inlet, and the side (for convenience of description, the second side) of the housing 230 opposite to the air inlet is provided with an air outlet 231. The water diversion assembly 100 may be disposed at one end of the housing 230.

It should be noted that, the first side may be partially hollowed out to form the air inlet, or the first side may be entirely hollowed out, that is, the shell 230 does not have a side wall on the first side to form the air inlet; the second side may be partially hollowed out to form the air outlet 231, or the second side may be entirely hollowed out, that is, the housing 230 does not have a sidewall on the second side, so as to form the air outlet 231. In fig. 29 and 30, the second side is entirely hollowed out to form the air outlet 231, and in order to simplify the drawing, fig. 29 and 30 only show the actual structure of the coil heat exchanger 10 at a partial position of the second side, but do not show the entire internal structure of the coil heat exchanger.

The housing 230 may have a substantially rectangular parallelepiped structure, and the water diversion assembly 100 may be disposed at one end of the housing 230 in the longitudinal direction. The air inlet and outlet 231 may also be disposed on two adjacent sides of the housing 230.

The water inlet branch pipe 310 and the water outlet branch pipe 320 of the water collecting and distributing assembly 100 of the present embodiment may be disposed on the same sidewall of the housing 110, and for convenience of description, the sidewall of the housing 110 where the water outlet branch pipe 320 and the water inlet branch pipe 310 are disposed is defined as a first sidewall.

Specifically, in one implementation manner, the first side wall of the housing 110 is provided with a plurality of first communication ports 115 and a plurality of second communication ports 116, the plurality of first communication ports 115 correspond to the positions of the water inlet channels 101 and are respectively communicated with the water inlet channels 101, the plurality of second communication ports 116 correspond to the positions of the water outlet channels 102 and are respectively communicated with the water outlet channels 102, the inlet ends of the water inlet branch pipes 310 are hermetically connected to the first communication ports 115, and the inlet ends of the water outlet branch pipes 320 are hermetically connected to the second communication ports 116.

The first communication ports 115 may be disposed at intervals, and each first communication port 115 is correspondingly and hermetically connected to an inlet end of the water inlet branch pipe 310 and is communicated with the water inlet channel 101. That is, the inlet ends of all the water inlet branch pipes 310 may be connected to all the first communication ports 115 in a one-to-one correspondence, and the circumferential side walls of the inlet ends of the water inlet branch pipes 310 are connected to the circumferential walls of the first communication ports 115 in a sealing manner, so as to prevent water from leaking between the inlet ends and the first communication ports 115, and simultaneously the inlet ends are communicated with the water inlet channel 101. The second communication ports 116 may be disposed at intervals, and each second communication port 116 is correspondingly and hermetically connected to the outlet end of the water outlet branch pipe 320 and communicates with the water outlet channel 102. That is, the outlet ends of all the water outlet branch pipes 320 may be respectively connected to all the second communication ports 116 in a one-to-one correspondence, and the circumferential side walls of the outlet ends are connected with the circumferential walls of the second communication ports 116 in a sealing manner, so as to avoid leakage of water flow between the outlet ends and the second communication ports 116, and simultaneously the outlet ends are communicated with the water outlet channel 102.

The housing 110 of the present embodiment may be generally rectangular or oval in shape that mates with the ends of the heat exchange assembly 200.

In some implementations, the first side wall may be a side wall of the housing 110 facing the side of the housing 230, and the first side wall may be partially hollowed out to form the first communication port 115 and the second communication port 116. Alternatively, the inlet ends of the water inlet branch pipes 310 may be inserted into the corresponding first communication ports 115 and sealingly connected to the circumferential inner wall of the first communication port 115. Alternatively, the outlet end of the water outlet branch pipe 320 may be inserted into the corresponding second communication port 116 and be sealingly connected to the circumferential inner wall of the second communication port 116.

The housing 110 may be an integrally formed structure, a connected structure, or a detachable sealing connection structure. In some embodiments, the casing 110 includes a casing body 111 and a sealing plate 112, a first opening 1111 is disposed on one side of the casing body 111, a first groove 113 and a second groove 114 that are isolated from each other are disposed on the casing body 111, a notch of the first groove 113 and a notch of the second groove 114 are both in the same direction as the first opening 1111, and the sealing plate 112 seals the first opening 1111 and forms the water inlet channel 101 with the first groove 113 and forms the water outlet channel 102 with the second groove 114. Wherein the sealing plate 112 is located at a side of the case body 111 facing the heat exchange assembly 200, i.e., a side facing the outer case 230, that is, the sealing plate 112 is a first sidewall of the case 110 facing the heat exchange assembly 200.

The seal plate 112 may be fixedly coupled to the housing 230 of the heat exchange assembly 200. Specifically, in one implementation, as shown in fig. 2 and 3, an end plate 232 may be disposed at an end of the housing 230 to which the sealing plate 112 is connected. Because the upper water diversion and distribution assembly 100 bears an important water flow distribution function, the requirements on tightness and pressure resistance are high, the shell 230 is provided with the end plate 232, and the stress of shaking, falling, impact and the like occurring in the process of transportation, carrying, installation and the like of the whole machine can be borne by the end plate 232 and cannot be transferred to the water diversion and distribution assembly 100, so that the sealing effect and the pressure bearing capacity of the water diversion and distribution assembly 100 can be maintained. It should be noted that, the coil 210 passes through the end plate 232 of the casing 230, and the coil 210 and the end plate 232 of the casing 110 may be in an unsealed structure, and the end plate 232 is connected with other structural members of the whole machine, so as to perform a function of fixing the structure. The end plate 232 of the housing 230 and the housing 230 may be integrally formed, or may be separately assembled.

Alternatively, both sides of the sealing plate 112 in the width direction (which can be understood with reference to the second direction Y) may be provided with the burring 1121 to enhance the strength of the sealing plate 112. The end plate 232 may also be provided with flanges 1121 on both sides in the width direction to increase the strength of the end plate 232.

The sealing plate 112 may be an integrally formed plate structure, and the housing body 111 may be an integrally formed structure. The shell body 111 and the sealing plate 112 may be integrally connected by welding or the like, or may be fixedly connected by screws or the like, and it should be noted that, no matter what connection manner is adopted, 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 may be independent from each other, and water leakage cannot occur, and in particular, the sealing can be realized by means of welding seal, expansion seal, glue seal, rubber gasket (sealing ring) seal, and the like. The first communication port 115 on the sealing plate 112 and the water inlet branch pipe 310 can be in sealing connection, sealing ring 1124 sealing connection, glue sealing connection, expansion sealing connection and the like, and the second communication port 116 on the sealing plate 112 and the water outlet branch pipe 320 can also be in sealing connection, sealing ring 1124 sealing connection, glue sealing connection, expansion sealing connection and the like.

In some embodiments, the water diversion assembly 100 further includes a gasket 130, the gasket 130 being sealingly disposed between the seal plate 112 and the housing 110.

In this embodiment, the sealing connection between the outlet branch pipe 320 and the inlet branch pipe 310 and the sealing plate 112 may take various forms, and several sealing schemes are specifically described below.

In some implementations, as shown in fig. 15 and 16, the sealing plate 112 may be made of metal, the water inlet branch pipe 310 and the water outlet branch pipe 320 are also made of metal, the water outlet branch pipe 320 may be welded to the first communication port 115 of the sealing plate 112, the water outlet branch pipe 320 may be welded to the second communication port 116 of the sealing plate 112, specifically, a raised ring is formed at a position of the sealing plate 112 corresponding to the first communication port 115 and the second communication port 116, an inner wall surface of the raised ring is a sealing connection surface 1122, the sealing connection surface 1122 is in sealing connection with the water inlet branch pipe 310 or the water outlet branch pipe 320 through a solder 1123, and a specific welding manner may be flame welding, furnace passing welding, high-frequency welding or the like.

In some implementations, as shown in fig. 17, the sealing plate 112 is in interference fit with the water inlet branch pipe 310, the sealing plate 112 is in interference fit with the water outlet branch pipe 320, specifically, the inner diameter of the first communication port 115 of the sealing plate 112 (i.e. the diameter corresponding to the contact surface between the first communication port 115 and the water inlet branch pipe 310) is smaller than or equal to the inlet end of the water inlet branch pipe 310 after pipe expansion, and the inner diameter of the second communication port 116 of the sealing plate 112 (i.e. the diameter corresponding to the contact surface between the second communication port 116 and the water outlet branch pipe 320) is smaller than or equal to the outer diameter of the outlet end of the water outlet branch pipe 320 after pipe expansion, so as to form interference connection and play a role in sealing; in this expansion scheme, the thickness of the sealing plate 112 may be 5mm or more, the inner wall surface of the first communication port 115 and the inner wall surface of the second communication port may be provided with sealing grooves, and the sealing plate 112 may be made of metal, ceramic, glass, plastic, rubber, silica gel, or a composite material of the above materials. The water inlet branch pipe 310 and the water outlet branch pipe 320 are generally made of metal pipes to improve heat exchange efficiency. Specifically, the sealing plate 112 forms a protruding ring at a position corresponding to the first communication port 115 and the second communication port 116, the inner wall surface of the protruding ring is a sealing connection surface 1122, and the sealing connection surface 1122 is in interference fit with the water inlet branch pipe 310 or the water outlet branch pipe 320.

In some implementations, as shown in fig. 15, glue may be further applied 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, glue may also be applied between the inner side of the second communication 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 may be connected to the sealing plate 112 in a welding or expansion manner, and the glue adheres between the outer wall of the water inlet branch pipe 310 and the inner side of the first communication 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 communication port 116 of the sealing plate 112, so as to perform a sealing function.

In some implementations, as shown in fig. 18, 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, a sealing ring 1124 is placed between the inner side of the contact surface of the sealing plate 112 with the outer wall of the water inlet branch pipe 310, a sealing ring 1124 is placed between the contact surface of the sealing plate 112 with the outer wall of the water outlet branch pipe 320, and after the water inlet branch pipe 310 and the water outlet branch pipe 320 expand, the sealing ring 1124 is pressed 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, so as to perform a sealing function. The seal ring 1124 may be rubber or silicone.

In some implementations, as shown in fig. 19 to 21, the water collecting and distributing assembly 100 further includes a gasket 130, the gasket 130 is disposed between the sealing plate 112 and the housing 110 in a sealing manner, the gasket 130 covers the first opening 1111, a plurality of first through holes 131 are disposed corresponding to the positions of the water inlet channels 101 in the gasket 130, a plurality of second through holes 132 are disposed corresponding to the positions of the water outlet channels 102 in the gasket 130, the plurality of first through holes 131 are disposed corresponding to the plurality of first through holes 115 in a one-to-one and coaxial manner, the plurality of water inlet branches 310 may pass through the first through holes 115 in a one-to-one correspondence manner and are connected with the first through holes 131 in a sealing manner, the plurality of second through holes 132 are disposed corresponding to the plurality of second through holes 116 in a one-to-one manner and are coaxial with each other, and the plurality of water outlet branches 320 may pass through the second through holes 116 in a one-to-one correspondence manner and are connected with the second through holes 116 in a sealing manner.

The water inlet branch pipe 310, the first communication port 115 and the first communication port 131 may not be in a one-to-one correspondence relationship, so long as connection and sealing can be achieved; the water outlet branch pipe 320, the second communication port 116 and the second through port 132 may not be in one-to-one correspondence as long as connection and sealing can be achieved. The gasket 130 is made of rubber, silica gel or other materials, when the gasket is assembled, a certain gap exists between the contact surfaces of the first communication port 115 of the sealing plate 112 and the water inlet branch pipe 310 and between the contact surfaces of the second communication port 116 of the sealing plate 112 and the water outlet branch pipe 320, the gasket 130 is sleeved on the water inlet branch pipe 310 and the water outlet end 212, when the shell body 111 is assembled with the sealing plate 112, the gasket 130 between the shell body 111 and the sealing plate 112 is extruded by fastening force, so that part of gasket 130 material is extruded to the gap between the water inlet branch pipe 310 and the first communication port 115 of the sealing plate 112 and the gap between the water outlet branch pipe 320 and the second communication port 116, so as to play a sealing role, and meanwhile, the water outlet branch pipe 310 and the first through port 131 of the gasket 130 can be in interference fit so as to play a sealing role, and the second through port 132 of the gasket 130 can be in interference fit. In this embodiment, the sealing arrangement of the plurality of water inlet branch pipes 310 and the plurality of water outlet branch pipes 320 can be achieved by adopting one sealing gasket 130, so that the operation is convenient, the assembly is convenient, and the sealing performance is good.

It should be noted that, the circumferential edge of the gasket 130 may also seal the connection air passage between the shell body 111 and the sealing plate 112, and the end surface of the circumferential edge of the gasket 130 may be provided with one or more circles of sealing grooves along the circumferential direction, when there are multiple circles of sealing grooves, each circle of sealing grooves Yan Zhi may encircle the circumferential edge of the gasket 130, and the multiple circles of sealing grooves are arranged at intervals along the thickness direction of the gasket 130, where the multiple circles of sealing grooves may play multiple circles, and may play a role in multi-layer sealing. In the scheme adopting the sealing gasket 130, the water inlet branch pipe 310 and the water outlet branch pipe 320 can also be connected with the sealing gasket 130 and the sealing plate 112 in an expansion joint mode.

Further, in the sealing gasket 130, the inner walls of the first through hole 131 and the second through hole 132 of the sealing gasket 130 may be provided with a circumferential sealing groove, and/or the inner walls of the first through hole 115 and the second through hole 116 may be provided with a circumferential sealing groove, the outer peripheral walls of the water inlet branch pipe 310 and the water outlet branch pipe 320 may be provided with sealing rings 1124, and the sealing rings 1124 may be correspondingly disposed in the circumferential sealing grooves, so as to further improve the sealing effect.

The expansion connection refers to a manner in which the water inlet branch pipe 310 or the water outlet branch pipe 320 is connected to the sealing plate 112 after being expanded outwards under the action of internal gas or liquid isopiestic pressure. One way to achieve the expansion connection of the water inlet branch pipe 310 and the water outlet branch pipe 320 may be to assemble the water inlet branch pipe 310 and the water outlet branch pipe 320 to the first communication port 115 and the second communication port 116 (and/or the first communication port 131 and the second communication port 132, etc.) in a flat pipe state, communicate the coil 210 with the water inlet branch pipe 310 and the water outlet branch pipe 320, temporarily seal the outlet end of the coil 210, fill gas through the inlet end of the coil 210, etc., so that the pressure of the water inlet branch pipe 310 and the water outlet branch pipe 320 is increased, and the water inlet branch pipe 310 and the water outlet branch pipe 320 expand outwards under the pressure to abut against the sealing plate 112 (and/or the gasket 130), so as to achieve the connection.

It should be noted that the above sealing schemes may 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 communication port 115 and the second communication port 116 may have the same structure, for example, circular holes with equal diameters, so that it is not necessary to distinguish the first communication port 115 and the second communication port 116 when the water collecting and separating assembly 100 is manufactured, and the processing is convenient and the efficiency is high. Similarly, the water inlet branch pipe 310 and the water outlet branch pipe 320 may have the same structure and be arranged in parallel.

In some embodiments, the water inlet connector 140 is connected to a side wall of the housing 110 away from the heat exchange assembly 200, specifically, a side wall (i.e. the top plate 1112) of the housing 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 disposed and communicated with the water inlet through hole 1114. Wherein, the water inlet connector 140 may be a tubular member, and an inner wall or an outer wall thereof may be provided with threads, so that the water inlet connector 140 and a water outlet pipe of the heat exchange water supply system may be in threaded connection, and the water inlet connector 140 may be at least partially located at an outer side of the shell body 111 and extend towards a side of the shell body 111 away from the sealing plate 112, so that the water inlet connector 140 is connected with the water outlet pipe of the heat exchange water supply system.

Alternatively, the water outlet connector 150 may be disposed on the same side wall of the housing 110 as the water inlet connector 140, for example, the water outlet connector 150 may also be connected to a side wall of the housing 110 away from the heat exchange assembly 200, specifically, a side wall (i.e. the top plate 1112) of the housing 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 connector 150 and the water outlet through hole 1115 are coaxially disposed and communicated. The water outlet connector 150 may be at least partially located at the outer side of the housing body 111 and extend toward a side of the housing body 111 away from the sealing plate 112. Wherein, the water outlet connector 150 may be a tubular member, and an inner wall or an outer wall thereof may be provided with threads, so that the water outlet connector 150 may be in threaded connection with a water inlet pipe of the heat exchange water supply system, and the water outlet connector 150 may be at least partially located at an outer side of the shell body 111 and extend towards a side of the shell body 111 away from the sealing plate 112, so that the water inlet connector 140 is connected with the water inlet pipe of the heat exchange water supply system.

In this embodiment, the water inlet connector 140 may be disposed below the water outlet connector 150, and the arrow a in the figure indicates the flow direction of the water flow in the water diversion and collection assembly 100.

It can be understood that the water inlet connector 140 and the water outlet connector 150 are arranged on the shell body 111, so that the connection and the assembly are convenient; the water inlet connector 140 and the water outlet connector 150 are arranged on the same side wall, so that the arrangement rationality of components of the water collecting and distributing assembly 100 is improved, the space occupied by the water inlet connector 140 and the water outlet connector 150 in different directions is reduced, and the heat exchange water supply system is connected with the water collecting and distributing assembly 100 from one direction.

It should be noted that the water inlet connector 140 and the water outlet connector 150 may also be disposed on different sidewalls of the housing body 111.

In some embodiments, as shown in fig. 1 and 2, the water inlet connector 140 and the water outlet connector 150 may be integrally formed with the housing body 111, integrally formed therewith, or integrally formed by separate assembly. In some embodiments, the water inlet connector 140 and the water outlet connector 150 and the housing body 111 are made of the same material, for example, the water inlet connector 140 and the water outlet connector 150 and the housing body 111 are made of metal materials, and the water inlet connector 140 and the water outlet connector 150 and the housing body 111 are integrally formed by powder alloy sintering or sand casting or forging or machining or the like by using the metal materials; for another example, the water inlet joint 140, the water outlet joint 150, and the case body 111 are made of ceramic, glass, or other materials, and the water inlet joint 140, the water outlet joint 150, and the case body 111 are integrally formed by sintering or other means; for another example, the water inlet connector 140, the water outlet connector 150, and the housing body 111 are made of plastic, and the water inlet connector 140, the water outlet connector 150, and the housing body 111 are integrally formed by injection molding, die pressing, 3D printing (3D printing is one of rapid prototyping techniques, also called additive manufacturing, which is a technique of constructing an object by layer-by-layer printing using an adhesive material such as powdered metal or plastic based on a digital model file). In other implementations, the water inlet connector 140 and the water outlet connector 150 and the housing body 111 are made of different materials, for example, the water inlet connector 140 and the water outlet connector 150 are made of metal materials, the housing body 111 is made of non-metal materials, and the water inlet connector 140 and the water outlet connector 150 are all nested in a through hole of the housing body 111 to be integrally formed in an injection molding, sintering, mold pressing mode, etc.

The metal material may be stainless steel, copper, or the like. The water inlet connector 140 and the water outlet connector 150 may be made of the same material, or may be made of different materials, and the water inlet connector 140 and the housing body 111, and the water outlet connector 150 and the housing body 111 may be connected in the same manner, or may be connected in different manners. Optionally, in order to improve the versatility of the water inlet connector 140 and the water outlet connector 150, in some embodiments, the water inlet connector 140 and the water outlet connector 150 are made of the same material and have the same structure, and the water inlet connector 140 and the housing body 111 and the water outlet connector 150 and the housing body 111 are connected in the same manner.

It can be appreciated that the housing body 111, the water inlet connector 140, the water outlet connector 150 and the housing body 111 are integrally formed, so that the assembly efficiency is high, the sealing connection surface 1122 is small, and the reliability of the water collecting and distributing assembly 100 is high.

In other embodiments, as shown in fig. 22 to 23, the water inlet and outlet connectors 140 and 150 and the case body 111 may be separately provided and assembled and connected. Specifically, the casing body 111 is provided with a water inlet 1114, a water inlet 101, a backflow channel 121, a water outlet 102 and a water outlet 1115, the water outlet 1115 is arranged corresponding to the water inlet 101 and is communicated with the water inlet 101, the water outlet 1115 is arranged corresponding to the water outlet 102 and is communicated with the water outlet 102, the water inlet joint 140 is in sealing connection with the water inlet 1114, a sealing connection 1116 is formed, and the water outlet joint 150 is in sealing connection with the water outlet 1115. The water inlet connector 140 may be welded, riveted, crimped or embedded in the water inlet hole 1114 to be connected with the shell body 111 in a sealing manner, or may be connected with the shell body 111 in a sealing manner by using a rubber ring, a rubber gasket seal or the like; similarly, the water outlet connector 150 may be welded, riveted, crimped or inserted into the water outlet through hole 1115 to be connected with the housing body 111 in a sealing manner, or may be connected with the housing body 111 in a sealing manner using a rubber ring, a rubber gasket, or the like.

The coiled tube heat exchanger 10 has different structures according to different use environments and requirements, for example, the heat exchange assembly 200 can be a water collecting assembly 100 without the first water return structure 120, or can be a water collecting assembly 100 with the first water return structure 120, and the first water return structure 120 can be different in the water collecting assembly 100 with the first water return structure 120. The water inlet joint 140 and the water outlet joint 150 are arranged in a form of being assembled with the shell 110 in a split mode, so that the water inlet joint 140 and the water outlet joint 150 can be used as general components, the water inlet joint 140 and the water outlet joint 150 can be used as standard components, and the water inlet joint 140 and the water outlet joint 150 are applicable to shell bodies 111 in different forms, and therefore, the water inlet joint 140 and the water outlet joint 150 can be produced in large-scale automatic batch mode, and the water inlet joint and the water outlet joint are high in efficiency and low in cost.

In some embodiments, the water diversion assembly 100 is provided with a gas discharge assembly 160, and the gas discharge assembly 160 is used for discharging gas in the water flow path. The exhaust assembly 160 may be in communication with the water outlet passage 102, and in particular, as shown in fig. 14, the exhaust assembly 160 may be disposed on the water outlet joint 150; as shown in fig. 13, the exhaust assembly 160 may be disposed on the housing body 111, specifically, may be disposed on the top plate 1112 and corresponds to the water outlet passage 102. The vent assembly 160 may be a vent valve, the vent assembly 160 may be opened to vent gas from the water flow path, and the vent assembly 160 may be closed such that the vent assembly 160 is sealed to prevent leakage of water flow.

In some embodiments, the water diversion assembly 100 is provided with a drain assembly 170 and a vent assembly 160 for venting water flow in the water flow path. The drain assembly 170 may be in communication with the water inlet channel 101, specifically, as shown in fig. 14, the drain assembly 170 may be disposed on the water outlet joint 150; as shown in fig. 13, the drain assembly 170 may be disposed on the housing body 111, specifically, may be disposed on the top plate 1112 and corresponds to the water inlet channel 101. The drain assembly 170 may be a drain valve, the drain assembly 170 may be opened to drain gas from the water flow path, and the drain assembly 170 may be closed such that the drain assembly 170 is sealed to prevent leakage of water flow.

It should be noted that the positions of the exhaust assembly 160 and the drain assembly 170 may be interchanged. In this embodiment, the exhaust assembly 160 may be disposed above the drain assembly 170. In this embodiment, by communicating the exhaust component 160 with the water outlet channel 102, compared with the form in which the exhaust component 160 is communicated with the water inlet channel 101, the exhaust effect is better, so that more gas in the heat exchange component 200 can be exhausted, and the heat exchange efficiency can be improved. The present embodiment facilitates the complete drainage of water within the heat exchange assembly 200 when the heat exchange assembly 200 is not in use by communicating the drain assembly 170 with the water inlet channel 101.

The flow paths of the plurality of coils 210 of the coil heat exchanger 10 of the present embodiment may be the same or different. The coil 210 may include at least two heat exchange sections, where multiple heat exchange sections are sequentially connected in series, and each heat exchange section may be one heat exchange tube or multiple heat exchange tubes, and when any heat exchange section has multiple heat exchange tubes, the multiple heat exchange tubes are arranged in parallel. That is, in the water flow direction, the number of heat exchange tubes may be different at different positions, for example, the outlet of one water inlet tube may be connected to a plurality of water outlet tubes, the outlets of a plurality of water inlet tubes may be connected to the same water inlet tube, or one water inlet tube may be communicated with one water outlet tube. All heat exchange tubes of the multi-section heat exchange section can be approximately the same in length, two ends of all heat exchange tubes are respectively approximately aligned, and the multi-section heat exchange section forms a coil 210 structure which is sequentially bent and folded.

In one implementation, as shown in fig. 2 and 3, any one heat exchange tube of the multi-segment heat exchange segment is arranged along a first direction X, first ends of all heat exchange tubes along the first direction X may be substantially aligned, second ends of all heat exchange tubes along the first direction X are substantially aligned, and the plurality of heat exchange tubes are arranged at intervals along a second direction Y and a third direction Z. The water collecting assembly 100 is disposed at a first end of the heat exchange tube along a first direction X, wherein the first ends of the heat exchange tubes of the first heat exchange section are all communicated with the water inlet branch tube 310, as shown in fig. 4 to 11, water flowing into the water inlet channel 101 flows along a path B from the water inlet channel 101 through the plurality of water outlet branch tubes 320, flows to the first ends of the heat exchange tubes of the first heat exchange section, flows to the second ends along the first direction X through the heat exchange tubes of the first heat exchange section, enters the heat exchange tubes of the second heat exchange section from the second ends of the heat exchange tubes of the first heat exchange section, and flows back to the first ends of the heat exchange tubes of the second heat exchange section along a direction opposite to the first direction X from the heat exchange tubes of the second heat exchange section, so as to form a primary backflow. In some embodiments, as shown in fig. 8, the flow path of the heat exchange assembly 200 is shorter, the first end of the second heat exchange section is communicated with the outlet branch pipe 320, and the water flows along the path D to the outlet branch pipe 320 through the first end of the heat exchange pipe of the second heat exchange section, and then flows back to the outlet channel 102, that is, the water flowing through each coil 210 flows through the inlet branch pipe 310 and then flows through one long U-shaped pipe, and then flows back to the outlet channel 102 through the outlet branch pipe 320, which can also be understood by referring to the water flow path A4 in fig. 9. In other embodiments, as shown in fig. 10 and 11, the flow of the heat exchange assembly 200 is longer, the first end of the second heat exchange section may be further communicated with the first end of the third heat exchange section, the water flows into the first end of the heat exchange tube of the third heat exchange section along the path C of fig. 10 through the first end of the heat exchange tube of the second heat exchange section, flows from the heat exchange tube of the third heat exchange section to the second end of the heat exchange tube of the third heat exchange section along the first direction X, flows back to the first end through the fourth heat exchange section to form a second backflow, the first end of the fourth heat exchange section may be communicated with the outlet branch pipe 320, and the water flows into the outlet channel 102 after flowing back to the outlet branch pipe 320 along the first end of the heat exchange tube of the fourth heat exchange section along the path D of fig. 10; that is, the water flow through each coil 210 passes through two long U-tubes (in turn, through the first long U-tube 201 and the second long U-tube 202), and the process can also be understood with reference to the water flow path A5 of FIG. 11. Each coil 210 or part of coils 210 may also include an even number of heat exchange sections (i.e. three long U-shaped pipes or more) with 6 or more times to form more backflow, and a specific arrangement may refer to a circulation arrangement of the first section and the fourth section, for example, three long U-shaped pipes may be provided for each coil 210, as shown in fig. 4, a water flow flowing out of the first long U-shaped pipe 201 flows out of the first long U-shaped pipe 201 along a path C1 and flows through a first backflow channel 1211 to the second long U-shaped pipe 202, a water flow flowing out of the second long U-shaped pipe 202 flows out of the second long U-shaped pipe 202 along a path C2 and flows through a second backflow channel 1212 to the third long U-shaped pipe 203, a water flow flowing out of the second long U-shaped pipe 202 flows back to the outlet branch pipe 320 along a path D shown in fig. 4 to the outlet channel 102, and a water flow process may refer to a water flow path A2 shown in fig. 5.

The primary backflow is a flow path, specifically, the primary backflow refers to a primary backflow flow path from the first end to the second end and from the second end to the first end, the secondary backflow refers to a secondary backflow flow path through which the water flow needs to pass, and similarly, the tertiary backflow and more backflow refers to a backflow flow path through which the water flow needs to pass corresponding times.

Along the flow direction of the water, each coil 210 may be connected between the heat exchange tubes connected at the second end by a connector, that is, in the second end, the outlet of the upstream heat exchange tube and the inlet of the downstream heat exchange tube may be connected by a connector, when the upstream heat exchange tube and the downstream heat exchange tube are both one heat exchange tube, the two heat exchange tubes may be connected by a U-shaped connector, the connector and the two heat exchange tubes may be integrally formed, for example, welded into an integrally long U-shaped tube structure, or injection molded into an integrally long U-shaped tube structure, etc., the heat exchange tubes are integrally connected at the second end, which corresponds to one long U-shaped tube with an integrally formed backflow, and when two or more backflow flows are formed, the outlet of the upstream long U-shaped tube and the inlet of the downstream long U-shaped tube are connected and connected at the first end, and the U-shaped connection portion of each long U-shaped tube is located at the second end.

It should be noted that, the communication of each coil 210 at the second end may also be achieved by providing a second water return structure of an integral structure. The second water return structure is disposed at a second end of the heat exchange assembly 200 along the first direction X, and the second water return structure may be provided with a water return cavity, where the second end of the upstream heat exchange tube and the second end of the downstream heat exchange tube adjacent along the water flow direction are both communicated with the water return cavity. The plurality of coils 210 can use a second water return structure, specifically, a plurality of water return cavities are arranged on the second water return structure, and the second ends of two adjacent heat exchange tubes in the same coil 210 can be communicated through one water return cavity; in one return flow, when the pressures of the plurality of coils 210 at the second ends are the same, in the same return flow, the second ends of adjacent heat exchange tubes of the plurality of coils 210 may share a return water chamber, e.g., all coils 210 may include one return flow, the second return water structure may be provided with one return water chamber through which the second ends of the first heat exchange sections of all coils 210 communicate with the second ends of the second heat exchange sections; for another example, all coils 210 may include two returns, and the second return water structure may be provided with two spaced and independent return water chambers, with the second ends of the first heat exchange sections of all coils 210 communicating with the second ends of the second heat exchange sections through one of the return water chambers; the second ends of the third heat exchange sections of all coils 210 are in communication with the second ends of the fourth heat exchange sections through another return water chamber.

It should be noted that, in this embodiment, unless otherwise specified, it is mainly described that each coil 210 is formed by one long U-shaped tube or a plurality of long U-shaped tubes are sequentially connected, and the inlet end and the outlet end of each long U-shaped tube are located at the first end of the heat exchange assembly 200, where the number of times of reflux of the coil 210 is identical to the number of U-shaped tubes. For example, as shown in fig. 8 and 9, with one return, only one U-tube is required for each coil 210, with the two side edges of one U-tube side by side forming the first and second heat exchange sections of coil 210; for another example, in fig. 10 and 11, with two reflows, each coil 210 includes two U-shaped tubes, the outlet of the first long U-shaped tube 201 is connected to and communicates with the inlet of the second long U-shaped tube 202 at a first end, two side edges of the first long U-shaped tube 201 side by side form a first heat exchange section and a second heat exchange section of the coil 210, and two side edges of the second long U-shaped tube 202 side by side form a third heat exchange section and a fourth heat exchange section of the coil 210. For another example, as shown in fig. 4 to 5, 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 to and communicates with the inlet of the second long U-shaped tube 202 at a first end, the outlet of the second long U-shaped tube 202 is connected to and communicates with the inlet of the third long U-shaped tube 203 at a first end, two side edges of the first long U-shaped tube 201 side by side form a first heat exchange section and a second heat exchange section of the coil 210, two side edges of the second long U-shaped tube 202 side by side form a third heat exchange section and a fourth heat exchange section of the coil 210, and two side edges of the third long U-shaped tube 203 side by side form a fifth heat exchange section and a sixth heat exchange section of the coil 210.

When the coil 210 has two or more reflows, as shown in fig. 12, the first end of the upstream heat exchange section and the first end of the downstream heat exchange section may be connected by an additional connector, such as a semicircular pipe 180 or a U-shaped connector, that is, the outlet of the upstream long U-shaped pipe and the outlet of the downstream long U-shaped pipe may be connected by a connector, among the two long U-shaped pipes, along the flow direction of the water. As shown in fig. 4,6 and 8, in some embodiments, a first water return structure 120 may also be provided on the water collection assembly 100 such that the first end of the upstream heat exchange section communicates with the first end of the downstream heat exchange section via the first water return structure 120, i.e., the outlet of the upstream long U-shaped tube communicates with the outlet of the downstream long U-shaped tube via the first water return structure 120.

It should be noted that the relevant upstream and downstream in coil 210 are defined with reference to the flow direction of the water flow, wherein the water flow direction is upstream near the inlet and downstream near the outlet, i.e. the water flow flows from upstream to downstream.

In one embodiment, a first water return structure 120 is further disposed in the water collecting and distributing assembly 100, 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 includes a plurality of return branch pipes 330, one end of each return branch pipe 330 is connected to the housing 110 and is in communication with the return channels 121, and each return channel 121 is at least in communication with two return branch pipes 330, and the other end of each return branch pipe 330 is located outside the housing 110 and extends away from the housing 110. One of at least two return branches 330 passing through the same return channel 121 is a first return branch 331 and the other is a second return branch 332. At least one coil 210 of the plurality of coils 210 is a first coil 220, the first coil 220 includes a first heat exchange tube 221 and a second heat exchange tube 222, an outlet of the first heat exchange tube 221 is connected to the other end of the first return branch 331, and an inlet of the second heat exchange tube 222 is connected to the other end of the second return branch 332, so that the first heat exchange tube 221 and the second heat exchange tube 222 are serially connected.

Wherein, the water inlet channel 101 may be disposed on one side of the first water return structure 120, and the water outlet channel 102 may be disposed on the other side of the first water return structure 120. That is, the first water return structure 120 is disposed between the water inlet channel 101 and the water outlet channel 102, and isolates the water inlet channel 101 and the water outlet channel 102 from each other. Specifically, in one implementation, the water diversion assembly 100 is formed with a receiving cavity 1117, the first water return structure 120 is disposed in the receiving cavity 1117, and the first water return structure 120 divides the receiving cavity 1117 into the water outlet channel 102 and the water inlet channel 101.

It will be appreciated that where coil 210 has two or more returns, a return branch may be used which connects to the outlet or inlet of the long U. For a first coil 220, the water inlet branch pipe 310 may be in communication with an inlet of a first heat exchange pipe 221 in the first coil 220, an outlet of the first heat exchange pipe 221 may be in communication with an inlet of a second heat exchange pipe 222 of the first coil 220 through a first water outlet branch pipe 320, a first water return structure 120, and a second water outlet branch pipe 320, and an outlet of the second heat exchange pipe 222 is in communication with the water outlet branch pipe 320.

Wherein the first coil 220 actually, i.e., comprises two or more returns of the coil 210. Some of the coils 210 may be provided as the first coil 220, and some may be provided as coils 210 having only one return flow, or all of the coils 210 may be provided as the first coil 220.

The first heat exchanging pipe 221 and the second heat exchanging pipe 222 may be understood as two heat exchanging pipes connected to each other and communicating at a first end in the first direction X. For example, as shown in fig. 10 and 11, when the first coil 220 has two 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) may be used as the first heat exchange tube 221 and the second heat exchange tube 222, in other words, the first heat exchange section and the second heat exchange section are long U-shaped tubes with the second ends connected together, and in the case that the third heat exchange section and the fourth heat exchange section are U-shaped tubes with the second ends connected together, the outlet of the upstream long U-shaped tube and the inlet of the downstream U-shaped tube are connected at the first ends through a set of the first reflow branch tube 331, the first water return structure 120, and the second reflow branch tube 332. For another example, as shown in fig. 4 and 5, when the first coil 220 has three reflux flows, 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) are formed into the first heat exchange tube 221 and the second heat exchange tube 222, in other words, when 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) are formed into the long U-shaped 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 formed into the long U-shaped tube in which the second end is formed into the whole, and when the fifth heat exchange section and the sixth heat exchange section are formed into the U-shaped tube in which the second end is formed into the whole, the upstream outlet of the third long U-shaped tube communicates with the first branch tube 331 and the first reflux flows through the first branch tube 332 and the first reflux flow.

It should be noted that, the first return branch 331 is a return branch 330 connected to the first heat exchange tube 221, the second return branch 332 is a flow branch connected to the second heat exchange tube 222, the flow of water in the first return branch 331 generally flows into the return channel 121, and the flow of water in the second return branch 332 generally comes from the return channel 121. All the return branch pipes 330 may be of the same structure, and the return branch pipes 330, the inlet branch pipes 310 and the outlet branch pipes 320 may all be of the same structure and disposed parallel to each other to improve the workability of the water diversion assembly 100. Wherein, the return branch pipe 330, the water inlet branch pipe 310 and the water outlet branch pipe 320 may all be identical to the extension direction of the long U-shaped pipe.

In actual arrangement, all heat exchange tubes in the heat exchange assembly 200 that need to be in communication with each other at the first end may be in communication via the same first water return structure 120. For example, in the case of having multiple groups of the first heat exchange tubes 221 and the second heat exchange tubes 222, multiple backflow channels 121 may be correspondingly disposed on the first water return structure 120, so that the multiple groups of the first heat exchange tubes 221 and the second heat exchange tubes 222 are respectively communicated through different backflow channels 121, and when two groups or two groups of pressure differences exist between the multiple groups of the first heat exchange tubes 221 and the second heat exchange tubes 222, a larger backflow channel 121 may also be disposed on the first water return structure 120, and the multiple groups of the first heat exchange tubes 221 and the second heat exchange tubes 222 are communicated through the one backflow channel 121.

In some embodiments, at least two coils 210 of the plurality of coils 210 are first coils 220, and at least two first heat exchange tubes 221 are in communication with corresponding second heat exchange tubes 222 through the same return channel 121.

As shown in fig. 10 and 11, the first heat exchange tubes 221 and the second heat exchange tubes 222 are connected by the first return channel 1211, the first heat exchange tubes 221 are isobaric channels, and the second heat exchange tubes 222 are isobaric channels. The first heat exchanging pipes 221 and the second heat exchanging pipes 222 in the same backflow in the plurality of first coils 220 may communicate through the same backflow channel 121, and in this embodiment, the number of backflow channels 121 may be equal to the number of backflow times of the first coils 220 minus one. For example, as shown in fig. 10 and 11, when all of the first coils 220 are refluxed twice, the first water return structure 120 may be provided with one return channel 121 in all of the first coils 220: the heat exchange tubes in the second heat exchange section are communicated with the heat exchange tubes in the third heat exchange section through the return channel 121, i.e. all backwater branch pipes are communicated with the return channel 121. For another example, when all the first coils 220 are three-times reflowed, the first water return structure 120 may be provided with two mutually independent reflow channels 121, in all the first coils 220: the heat exchange tubes in the second heat exchange section are communicated with the heat exchange tubes in the third heat exchange section through one of the return channels 121, i.e. all return branch pipes connected with the second heat exchange section and the third heat exchange section are communicated with the return channel 121; the heat exchange tubes in the fourth heat exchange section are communicated with the heat exchange tubes in the fifth heat exchange section through another return channel 121, i.e. all return branch pipes connected with the fourth heat exchange section and the fifth heat exchange section are communicated with the other return channel 121.

In other embodiments, as shown in fig. 4, 5 and fig. 6 and 7, at least two coils 210 of the plurality of coils 210 are first coils 220, the first water return structure 120 is provided with a plurality of return channels 121, and the plurality of first heat exchange tubes 221 and the corresponding second heat exchange tubes 222 are provided with return channels 121 in a one-to-one correspondence. That is, each of the first heat exchange tubes 221 and the second heat exchange tube 222 connected at the first end thereof corresponds to one of the return channels 121, and the return channels 121 are connected only to one of the first heat exchange tubes 221 and the second heat exchange tube 222 connected at the first end thereof.

In one embodiment, referring to fig. 6 and 7, the plurality of coils 210 includes the first coils 220 having two backflow processes, such that each first coil 220 includes a set of first heat exchange tubes 221 and second heat exchange tubes 222, and each first return water structure 120 is provided with one backflow passage 121 corresponding to each first coil 220, that is, one backflow passage 121 communicates with only two backflow branches 330. In fig. 6 and 7, not only the first coil 220 having two backflow flows, but also at least one coil 210 is a U-shaped tube, and the water flow in the coil 210 flows along paths B and D shown in fig. 6, which can be understood by referring to the water flow path A3 of fig. 7, even though the coil 210 has only one backflow.

In another embodiment, as shown in fig. 4 and 5, the plurality of coils 210 are first coils 220 having three backflow processes, so that each first coil 220 includes two groups of first heat exchange tubes 221 and second heat exchange tubes 222, and two backflow channels 121 are respectively disposed in the first water return structure 120 corresponding to each first coil 220.

The first water return structure 120 may be formed on the partition 124, for example, a water return groove 1241 is disposed in the partition 124, and the water return groove 1241 cooperates with an inner wall surface of the housing 110 to form the water return channel 121.

In the solution with a plurality of return channels 121, as shown in fig. 4 and 6, the first water return structure 120 includes a plurality of bumps 122 disposed at intervals, adjacent bumps 122 are connected by a partition 123, the bumps 122 and the partition 123 are both connected to an inner wall surface of the housing 110, and each bump 122 is provided with the return channel 121. The bumps 122 and the reflow channels 121 may be disposed in a one-to-one correspondence, or a plurality of reflow channels 121 may be disposed on one bump 122 as required. When the number of the protrusions 122 is large, in order to improve the space utilization, the length direction of a part of the protrusions 122 may be inclined with respect to the top plate 1112 of the housing body 111 (a part of the housing 110 of the diversity water assembly 100), and the inclination directions of two adjacent protrusions 122 may be opposite along the height direction (refer to the third direction Z) of the housing body 111, so that the adjacent protrusions 122 are staggered, so that a plurality of protrusions 122 may be disposed in a smaller space, thereby realizing the arrangement of a larger number of the backflow channels 121. The partition 123 and the bump 122 are disposed in a sealing manner, and specifically, the partition 123 and the bump 122 may be an integral structure, and the partition 123, the bump 122 and the housing body 111 may be an integral structure.

It should be noted that, when there are three or more reflows in one first coil 220, the reflow channels 121 may be provided for the first heat exchange tube 221 and the second heat exchange tube 222 at the first end of each reflow. Taking three backflow in one first coil 220 as an example, the first water return structure 120 is provided with two backflow channels 121 corresponding to the first coil 220, the heat exchange tubes in the second heat exchange section are communicated with the heat exchange tubes in the third heat exchange section through one backflow channel 121, and the heat exchange tubes in the fourth heat exchange section are communicated with the heat exchange tubes in the fifth heat exchange section through the other backflow channel 121.

The first water return structure 120 of the present embodiment may be an integral structure, specifically, the first water return structure 120 may be an injection-molded integral structure, or may be a welded integral structure, etc.

In some embodiments, the first water return structure 120 is connected to the inner wall surface of the shell body 111, and the first water return structure 120 and the shell body 111 are integrally formed, specifically may be an integrally formed structure by injection molding. The first water return structure 120 and the shell body 111 may be made of the same material, for example, the first water return structure 120 and the shell body 111 may be made of metal, and at this time, the first water return structure 120 and the shell body 111 may be integrally formed by welding, powder alloy sintering, sand casting, forging, machining, or the like; the first water return structure 120 and the shell body 111 may be made of ceramic or glass, and at this time, the first water return structure 120 and the shell body 111 may be formed into an integral structure by sintering or the like; the first water return structure 120 and the housing body 111 may also be made of plastic, and at this time, the first water return structure 120 and the housing body 111 may be integrally formed by injection molding, sintering, mold pressing, etc.

In some other embodiments, as shown in fig. 25, the shell body 111 may include a peripheral frame 1113 and a top plate 1112, the top plate 1112 is connected to an end of Zhou Xiangkuang, which is away from the sealing plate 112, the peripheral frame 1113 is connected to the top plate 1112 in a sealing manner, and the two may be a split assembly structure, and the first water return structure 120 may be split assembled or integrally formed on an inner wall surface of the top plate 1112. It will be appreciated that the coiled tube heat exchanger 10 may have different structures according to the use environment and requirements, for example, the heat exchange assembly 200 may be a water collecting assembly 100 without the first water return structure 120, or may be a water collecting assembly 100 with the first water return structure 120, in the water collecting assembly 100 with the first water return structure 120, the first water return structure 120 may also be different, and the shell body 111 is configured as a structure in which the Zhou Xiangkuang 1113 and the top plate 1112 are separately assembled, so that the peripheral frame 1113 may be used as a standard component and may be commonly used in different first water return structures 120, so that the Zhou Xiangkuang 1113 may be produced in a batch and automated manner, with high production efficiency and low cost.

In other embodiments, as shown in fig. 27, the Zhou Xiangkuang 1113 of the housing body 111 and the top plate 1112 are integrally formed, and the first water return structure 120 is separately assembled to the top plate 1112. Like this, shell body 111 wholly can regard as general standard component, to different coil pipe heat exchangers 10, only need to assemble different first return water structures 120 to shell body 111 can for shell body 111 can regard as standard component to use, makes shell body 111 can automatic mass production in batches, and production efficiency is high, the cost is lower.

It should be noted that, when the first water return structure 120 is provided, the sealing plate 112 is further provided with a third communication port 117 that communicates with the backflow channel 121, the third communication port 117 is in sealing connection with the corresponding backflow branch pipe 330, in the scheme of the sealing gasket 130, the sealing gasket 130 also has a third through port 133 that corresponds to the third communication port 117, and a specific sealing manner may refer to a sealing connection manner between the water outlet branch pipe 320 and the water inlet branch pipe 310 and the sealing plate 112, which is not described herein. The first communication port 115, the second communication port 116 and the third communication port 117 may all have the same structure, for example, circular holes with equal diameters, so that it is not necessary to distinguish the first communication port 115, the second communication port 116 and the first communication port 115 when the water collecting and separating assembly 100 is manufactured, and the processing is convenient and the efficiency is high.

It should be further noted that, the first direction X may be a length direction of the heat exchange assembly 200, the second direction Y may be a width direction of the heat exchange assembly 200, the third direction Z may be a height direction of the heat exchange assembly 200, and the first direction X, the second direction Y and the third direction Z may be perpendicular to each other.

As shown in fig. 29 and 30, an embodiment of the present application further provides a heating ventilation device, which includes a fan 20 and the coil heat exchanger 10 according to the present application or any embodiment of the present application, where the fan 20 is disposed at one side of the coil heat exchanger 10.

Specifically, the fan 20 may be disposed on one side of the heat exchange assembly 200 along the second direction Y, and the flow direction E of the air flow formed by the fan 20 is substantially parallel to the second direction Y.

The heating and ventilation device may also include other components, such as a heat exchange water supply system, etc., and the connection of the heat exchange water supply system to the coil heat exchanger 10 may be referred to above, and will not be described again here.

The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A water distribution assembly for a coiled tube heat exchanger (10) having fins (240), comprising:

a shell (110), wherein a water inlet channel (101) and a water outlet channel (102) which are mutually isolated are formed in the shell (110);

The water inlet branch pipes (310) are arranged at intervals, the inlet ends of the water inlet branch pipes (310) are connected with the shell (110) and are communicated with the water inlet channel (101), the water inlet branch pipes (310) extend from the inlet ends to the outlet ends towards the direction away from the shell (110), and the outlet ends of the water inlet branch pipes (310) are used for being connected with the water inlet ends (211) of coils (210) of the coil heat exchanger (10);

The water outlet branch pipes (320) are arranged at intervals, the outlet ends of the water outlet branch pipes (320) are connected with the shell (110) and are communicated with the water outlet channel (102), the water outlet branch pipes (320) extend from the inlet ends to the outlet ends towards the direction deviating from the shell (110), and the inlet ends of the water outlet branch pipes (320) are used for being connected with the water outlet ends (212) of the coil pipes (210).

2. The water collecting and distributing assembly according to claim 1, wherein a plurality of first communication ports (115) and a plurality of second communication ports (116) are provided on a first side wall of the housing (110), the plurality of first communication ports (115) correspond to positions of the water inlet channels (101) and communicate with the water inlet channels (101) respectively, the plurality of second communication ports (116) correspond to positions of the water outlet channels (102) and communicate with the water outlet channels (102) respectively, an inlet end of each water inlet branch pipe (310) is connected to one of the first communication ports (115) in a sealing manner, and an inlet end of each water outlet branch pipe (320) is connected to one of the second communication ports (116) in a sealing manner.

3. The water diversity assembly according to claim 2, wherein the housing (110) comprises a housing body (111) and a sealing plate (112), the sealing plate (112) forms the first side wall, a first opening (1111) is formed on one side of the housing body (111), a first groove (113) and a second groove (114) which are isolated from each other are formed in the housing body (111), the direction of the notch of the first groove (113), the direction of the notch of the second groove (114) and the direction of the first opening (1111) are consistent, the sealing plate (112) is sealed in the first opening (1111), the sealing plate (112) and the first groove (113) form the water inlet channel (101), and the sealing plate (112) and the second groove (114) form the water outlet channel (102).

4. A water diversity assembly according to claim 3, characterized in that the housing body (111) is of unitary construction and/or the sealing plate (112) is of unitary construction.

5. A water diversion assembly according to claim 3, wherein the water diversion assembly (100) further comprises a gasket (130), the gasket (130) being sealingly arranged between the sealing plate (112) and the housing body (111).

6. The water collecting and distributing assembly according to claim 5, wherein the sealing gasket (130) covers the first opening (1111), the sealing gasket (130) is provided with a plurality of first through holes (131) and a plurality of second through holes (132), the first through holes (131) are in one-to-one correspondence with the first through holes (115) and coaxially arranged, the second through holes (132) are in one-to-one correspondence with the second through holes (116) and coaxially arranged, the inlet end of the water inlet branch pipe (310) penetrates through the first through holes (115) and is in sealing connection with the first through holes (131), and the outlet end of the water outlet branch pipe (320) penetrates through the second through holes (116) and is in sealing connection with the second through holes (132).

7. The water diversion assembly of claim 6, wherein the water inlet manifold (310) and/or the water outlet manifold (320) are connected to the gasket (130) and the sealing plate (112) by expansion.

8. The water diversity assembly according to any one of claims 1-7, wherein a first water return structure (120) is further provided within the housing (110), the first water return structure (120) being provided with a return channel (121), the water inlet channel (101) and the water outlet channel (102) being arranged in isolation from each other;

The coil heat exchanger (10) further comprises a plurality of backflow branch pipes (330), one ends of the backflow branch pipes (330) are connected with the shell (110) and are communicated with the backflow channels (121), each backflow channel (121) is at least communicated with two backflow branch pipes (330), and the other ends of the backflow branch pipes (330) are located outside the shell (110) and extend in directions deviating from the shell (110).

9. The water diversion and collection assembly according to claim 8, wherein the water inlet channel (101) and the water outlet channel (102) are respectively arranged at two sides of the first water return structure (120).

10. The water collecting and distributing assembly according to claim 9, wherein a containing cavity (1117) is formed in the housing (110), and the first water return structure (120) is connected to an inner wall surface of the housing (110) and divides the containing cavity (1117) into the water outlet channel (102) and the water inlet channel (101).

11. The water diversity assembly of claim 8, wherein the first water return structure (120) includes a spacer (124), the spacer (124) is connected to an inner wall surface of the housing (110), a return groove (1241) is provided in the spacer (124), and the return groove (1241) cooperates with the inner wall surface of the housing (110) to form the return channel (121).

12. The water diversity assembly as set forth in claim 11, wherein the spacer (124) includes a plurality of protrusions (122) disposed at intervals, adjacent protrusions (122) are connected by a partition (123), the protrusions (122) and the partition (123) are both connected to an inner wall surface of the housing (110), and the return passage (121) is disposed in the protrusions (122).

13. The water diversion assembly of claim 8, wherein the first water return structure (120) is a unitary structure;

and/or, the first water return structure (120) and the shell (110) are of an integrated structure or a split assembly structure.

14. The water diversity assembly according to any one of claims 3-7, wherein the water diversity assembly (100) further comprises a water inlet connector (140) and a water outlet connector (150), the water inlet connector (140) and the water outlet connector (150) are both connected to the housing body (111), the water inlet connector (140) is in communication with the water inlet channel (101), and the water outlet connector (150) is in communication with the water outlet channel (102).

15. The water diversity assembly according to claim 14, wherein the water inlet joint (140) is of unitary construction with the housing body (111);

And/or the water outlet joint (150) and the shell body (111) are of an integrated structure.

16. The water diversion assembly of claim 14, wherein the water diversion assembly (100) further comprises a vent assembly (160), the vent assembly (160) being in communication with the water outlet channel (102), the vent assembly (160) being connected to the water outlet fitting (150) and/or the housing (110);

and/or, the water collecting and distributing assembly (100) further comprises a water draining assembly (170), the water draining assembly (170) is communicated with the water inlet channel (101), and the water draining assembly (170) is connected to the water inlet joint (140) and/or the shell (110).

17. A coiled tube heat exchanger, comprising:

the water diversity assembly (100) of any of claims 1-16;

The heat exchange assembly (200) comprises a plurality of coils (210) and fins (240), each coil (210) is provided with a water inlet end (211) and a water outlet end (212), the water inlet ends (211) are connected and communicated with the outlet ends of the water inlet branch pipes (310), the water outlet ends (212) are connected and communicated with the inlet ends of the water outlet branch pipes (320), and the fins (240) are connected to the coils (210).

18. The coil heat exchanger according to claim 17, wherein the heat exchange assembly (200) further comprises a housing (230), the shell (110) being connected to one end of the housing (230), the outlet manifold (320) and the inlet manifold (310) being both disposed on a first side wall of the shell (110) facing the housing (230).

19. The coil heat exchanger according to claim 18, wherein one end of the housing (230) is provided with an end plate (232), the housing (110) is arranged on a side of the end plate (232) facing away from the housing (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 17-19, wherein a first water return structure (120) is further provided in the housing (110), the first water return structure (120) being provided with a return channel (121), the water inlet channel (101) and the water outlet channel (102) being arranged in isolation from each other;

The water diversion assembly (100) further comprises a first backflow branch pipe (331) and a second backflow branch pipe (332), wherein one end of the first backflow branch pipe (331) and one end of the second backflow branch pipe (332) are connected with the shell (110) and are communicated through the backflow channel (121);

at least one coil (210) of the plurality of coils (210) is a first coil (220), the first coil (220) comprises a first heat exchange tube (221) and a second heat exchange tube (222), an outlet of the first heat exchange tube (221) is connected with the other end of the first backflow branch tube (331), and an inlet of the second heat exchange tube (222) is connected with the other end of the second backflow branch tube (332), so that the first heat exchange tube (221) is communicated with the second heat exchange tube (222) in series.

21. A heating and ventilation device, characterized by comprising a fan (20) and a coil heat exchanger (10) according to any of claims 17-20, said fan (20) being arranged on one side of said coil heat exchanger (10).