阅读说明：本技术 一种平行流换热器、换热系统及除湿机 (Parallel flow heat exchanger, heat exchange system and dehumidifier ) 是由 汪洋 谭裕锋 刘丹华 于 2019-10-30 设计创作，主要内容包括：本发明涉及除湿设备领域,具体公开了一种平行流换热器,其包括多条呈上下平行布置的扁管、设置在相邻所述扁管之间的翅片、设置在所述扁管左右两端的集流管、以及与所述集流管焊接的进口管和出口管,所述集流管、所述进口管和所述出口管的材质均为铝。本发明还公开了一种应用上述平行流换热器的换热系统及除湿机。本发明将进口管和出口管设计为铝管,与集流管同种材质,实现铝－铝焊接,从而有效避免了进、出口管与集流管之间因存在铜铝焊接而造成工艺复杂,且焊接处发生电化学腐蚀,维护成本高等问题。(The invention relates to the field of dehumidification equipment, and particularly discloses a parallel flow heat exchanger which comprises a plurality of flat pipes which are arranged in parallel up and down, fins arranged between the adjacent flat pipes, collecting pipes arranged at the left and right ends of the flat pipes, and an inlet pipe and an outlet pipe which are welded with the collecting pipes, wherein the collecting pipes, the inlet pipe and the outlet pipe are all made of aluminum. The invention also discloses a heat exchange system and a dehumidifier applying the parallel flow heat exchanger. The inlet pipe and the outlet pipe are designed into aluminum pipes which are made of the same material as the collecting pipes, and aluminum-aluminum welding is realized, so that the problems of complex process, electrochemical corrosion at the welding position, high maintenance cost and the like caused by the copper-aluminum welding between the inlet pipe and the collecting pipes are effectively solved.)

1. The utility model provides a parallel flow heat exchanger which characterized in that, includes that many are flat pipes of parallel arrangement from top to bottom, sets up and is in adjacent fin between the flat pipe, set up the pressure manifold at both ends about the flat pipe and with pressure manifold welded import pipe and outlet pipe, the pressure manifold the import pipe with the material of outlet pipe is aluminium.

2. The parallel flow heat exchanger as claimed in claim 1, wherein said header pipes comprise a first header pipe and a second header pipe, a left end port of said flat pipe is welded to said first header pipe and is communicated with said first header pipe, a right end port of said flat pipe is welded to said second header pipe and is communicated with said second header pipe, and said flat pipe is made of aluminum.

3. The parallel flow heat exchanger of claim 2, wherein the flat tubes have two parallel broad surfaces, the broad surfaces of adjacent flat tubes are opposite and parallel to each other, and fins are welded to both broad surfaces of the flat tubes, and the fins are made of aluminum.

4. The parallel flow heat exchanger of claim 3, wherein side plates are welded to the upper and lower sides of the heat exchange portion formed by welding the flat tubes and the fins, and the side plates are made of aluminum.

5. An integrated microchannel heat exchange system, comprising two parallel flow heat exchangers according to any one of claims 1 to 4, wherein the two parallel flow heat exchangers are arranged in parallel at intervals, one of the parallel flow heat exchangers is a condenser, the other parallel flow heat exchanger is an evaporator, the throttle valve comprises a valve body, a valve core and a valve seat, throttle structures formed by the valve core and the valve seat are arranged in the valve body, the valve body is made of aluminum, the inlet end of the valve body is welded and fixed with an outlet pipe of the parallel flow heat exchanger serving as the condenser, and the outlet end of the valve body is welded and fixed with an inlet pipe of the parallel flow heat exchanger serving as the evaporator.

6. The integrated microchannel heat exchanger system of claim 5, wherein the valve element is made of stainless steel.

7. The integrated microchannel heat exchange system of claim 5, wherein the valve seat is made of stainless steel.

8. The integrated microchannel heat exchange system of claim 5, wherein the throttling valve is provided with a filter screen disposed within the valve body on the inlet end side of the valve body.

9. The integrated microchannel heat exchange system of claim 8, wherein the filter screen is made of stainless steel.

10. A dehumidifier comprising a compressor and an integrated microchannel heat exchange system as claimed in any one of claims 2 to 6, said compressor being connected to said integrated microchannel heat exchange system and forming a media circulation loop.

Technical Field

The invention relates to the field of dehumidification equipment, in particular to a parallel flow heat exchanger, a heat exchange system and a dehumidifier.

Background

The parallel flow heat exchanger is different from a traditional tube fin heat exchanger, the material of a main body heat exchange area (comprising fins, flat tubes, side plates, collecting pipes and the like) of the parallel flow heat exchanger is aluminum, and the inlet and outlet pipes of the traditional parallel flow heat exchanger are mostly copper pipes. Therefore, copper-aluminum welding exists between the collecting pipe and the inlet and outlet pipes. The welding mode has the problems of high cost, complex process, high maintenance cost and the like, and electrochemical corrosion is easy to occur at the welding position.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the parallel flow heat exchanger, the heat exchange system and the dehumidifier can solve the problems of complex process, electrochemical corrosion at a welding position, high maintenance cost and the like caused by copper-aluminum welding.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a parallel flow heat exchanger, which comprises a plurality of flat tubes arranged in parallel up and down, fins arranged between the adjacent flat tubes, collecting pipes arranged at the left and right ends of the flat tubes, and an inlet pipe and an outlet pipe welded with the collecting pipes, wherein the collecting pipes, the inlet pipe and the outlet pipe are all made of aluminum.

Compared with the prior art, the parallel flow heat exchanger provided by the invention has the beneficial effects that:

according to the parallel flow heat exchanger, the inlet pipe and the outlet pipe are designed into aluminum pipes, and the aluminum pipes are made of the same material as the collecting pipes, so that aluminum-aluminum welding is realized, and the problems that the process is complex, the welding position is subjected to electrochemical corrosion, the maintenance cost is high and the like due to the copper-aluminum welding between the inlet pipe and the collecting pipes and between the outlet pipe and the collecting pipes are effectively solved; meanwhile, the thickness of the heat exchanger is reduced due to the use of the flat pipe, the heat exchanger is particularly suitable for occasions with smaller usable space, and the refrigerant medium required by the heat exchanger is greatly reduced on the basis of ensuring the heat exchange efficiency to be unchanged by the micro-channel of the flat pipe.

As a preferred scheme of the parallel flow heat exchanger, the header pipe includes a first header pipe and a second header pipe, a left end port of the flat pipe is welded to the first header pipe and is communicated with the first header pipe, a right end port of the flat pipe is welded to the second header pipe and is communicated with the second header pipe, and the flat pipe is made of aluminum.

As a preferred scheme of the parallel flow heat exchanger, the flat tubes are provided with two mutually parallel wide faces, the adjacent wide faces of the flat tubes are arranged oppositely and mutually parallel, fins are welded on the two wide faces of the flat tubes, and the fins are made of aluminum.

As a preferred scheme of the parallel flow heat exchanger, side plates are welded to the upper side and the lower side of a heat exchange portion formed by welding the flat tubes and the fins, and the side plates are made of aluminum.

The invention provides an integrated microchannel heat exchange system, which comprises a throttle valve and the parallel flow heat exchanger provided by the first aspect, wherein the two parallel flow heat exchangers are arranged in parallel at intervals, one parallel flow heat exchanger is a condenser, the other parallel flow heat exchanger is an evaporator, the throttle valve comprises a valve body, a valve core and a valve seat, throttle structures formed by the valve core and the valve seat are arranged in the valve body, the valve body is made of aluminum, the inlet end of the valve body is welded and fixed with an outlet pipe of the parallel flow heat exchanger serving as the condenser, and the outlet end of the valve body is welded and fixed with an inlet pipe of the parallel flow heat exchanger serving as the evaporator.

Compared with the prior art, the integral micro-channel heat exchange system provided by the invention has the beneficial effects that: the integrated micro-channel heat exchange system adopts the two parallel flow heat exchangers as the condenser and the evaporator of the system respectively, and is connected into a whole through the throttle valve, so that the parallel flow heat exchange system has all the beneficial effects of the parallel flow heat exchangers, can realize the parallel installation of the evaporator and the condenser, has small distance, can be preassembled with the throttle valve, is convenient to assemble the evaporator and the condenser on the whole machine as a whole, reduces the procedures of leakage detection and welding in the production of the dehumidifier, and greatly improves the production efficiency; furthermore, since the conventional throttle assembly is considered: the integral micro-channel heat exchange system also designs the valve body of the throttle valve into an aluminum pipe shell, so that the throttle valve and the inlet pipe and the outlet pipe of the parallel flow heat exchanger are made of the same material, and aluminum-aluminum welding is realized, thereby avoiding the problems of complex process, electrochemical corrosion at the welding position, high maintenance cost and the like caused by the existence of copper-aluminum welding between the inlet pipe and the throttle valve of the parallel flow heat exchanger.

As the preferable scheme of the integrated micro-channel heat exchange system, the valve core is made of stainless steel.

As the preferable scheme of the integrated micro-channel heat exchange system, the valve seat is made of stainless steel.

As the preferable scheme of the integrated micro-channel heat exchange system, the throttling valve is provided with a filter screen, and the filter screen is arranged in the valve body and positioned on one side of the inlet end of the valve body.

As the preferable scheme of the integral micro-channel heat exchange system, the filter screen is made of stainless steel.

The invention provides a dehumidifier, which comprises a compressor and the integrated micro-channel heat exchange system provided by the second aspect, wherein the compressor is connected with the integrated micro-channel heat exchange system to form a medium circulation loop.

The dehumidifier comprises the integral microchannel heat exchange system, so that all the beneficial effects of the integral microchannel heat exchange system are achieved, and the description is not given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a junction of an integral parallel flow heat exchanger provided by the present invention;

FIG. 2 is a side view of the structure shown in FIG. 1;

FIG. 3 is a schematic structural diagram of an integrated microchannel heat exchange system provided by the invention;

FIG. 4 is a schematic view of the throttle valve configuration;

in the figure, 1, flat tube; 2. a fin; 3. a first header; 4. a second header; 5. an upper edge plate; 6. a lower edge plate; 7. an inlet pipe; 8. an outlet pipe; 9. a throttle valve; 91. a valve body; 92. a valve core; 93. a valve seat; 94. a filter screen; 10. a condenser; 11. an evaporator.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the preferred embodiment of the parallel flow heat exchanger provided by the present invention includes a plurality of flat tubes 1 arranged in parallel up and down, fins 2 arranged between adjacent flat tubes 1, collecting pipes (3 and 4) arranged at left and right ends of the flat tubes 1, and an inlet pipe 7 and an outlet pipe 8 welded to the collecting pipes, wherein the collecting pipes (3 and 4), the inlet pipe 7 and the outlet pipe 8 are made of aluminum. Therefore, the parallel flow heat exchanger of the invention designs the inlet pipe 7 and the outlet pipe 8 as aluminum pipes which are made of the same material as the collecting pipe, and realizes aluminum-aluminum welding, thereby effectively avoiding the problems of complex process, electrochemical corrosion at the welding position, high maintenance cost and the like caused by the copper-aluminum welding between the inlet pipe 7, the outlet pipe 8 and the collecting pipe; meanwhile, the thickness of the heat exchanger is reduced due to the use of the flat pipe, the heat exchanger is particularly suitable for occasions with smaller usable space, and the refrigerant medium required by the heat exchanger is greatly reduced on the basis of ensuring the heat exchange efficiency to be unchanged by the micro-channel of the flat pipe.

Illustratively, the headers include a first header 3 and a second header 4, and the inlet pipe 7 and the outlet pipe 8 are located on the same side, i.e., the inlet pipe 7 and the outlet pipe 8 are both welded to the same header (e.g., the second header 4 shown in fig. 1). Of course, in other embodiments, the inlet tube 7 and the outlet tube 8 are located on opposite sides, i.e. the inlet tube 7 and the outlet tube 8 are welded to the first header 3 and the second header 4, respectively.

Illustratively, the material of the flat tube 1 is preferably aluminum. Therefore, the flat pipe 1 and the collecting pipes (3 and 4) are welded by aluminum-aluminum, the process is simple, the problems of electrochemical corrosion at the welding position, high maintenance cost and the like can be avoided.

Exemplarily, flat pipe 1 is equipped with two wide faces that are parallel to each other, and is adjacent the wide face of flat pipe sets up and is parallel to each other relatively, all weld fin 2 on two wide faces of flat pipe 1. Therefore, the fins 2 are welded on the wide surfaces of the flat pipes 1, the heat conduction area between the fins 2 and the flat pipes 1 can be increased, and the heat exchange efficiency of products is improved. Furthermore, the fin 2 is preferably made of aluminum, so that aluminum-aluminum welding is realized between the fin 2 and the flat tube 1, the process is simple, the problems of electrochemical corrosion at the welding position, high maintenance cost and the like can be avoided.

Exemplarily, the upper and lower both sides of the heat transfer portion that flat pipe 1 with fin 2 welding constitutes all weld the sideboard, if: the upper edge plate 5 and the lower edge plate 6, and the edge plates (5 and 6) play a role in protecting the heat exchanging part. Furthermore, the side plates (5 and 6) are preferably made of aluminum, so that aluminum-aluminum welding is realized between the side plates and the heat exchange part (the direct connection part is the fin 2), the process is simple, the problems of electrochemical corrosion at the welding position, high maintenance cost and the like can be avoided.

It should be further noted that the parallel flow heat exchanger of the present embodiment integrally adopts a lightweight design made of all aluminum materials, that is, the flat tubes 1, the fins 2, the collecting pipes (3 and 4), the side plates (5 and 6), the inlet pipe 7 and the outlet pipe 8 are made of aluminum, so that the weight of the heat exchanger is reduced, and the material cost is reduced.

As shown in fig. 3 and 4, based on the parallel flow heat exchanger provided in the above embodiment, the present invention further provides an integrated microchannel heat exchange system, which includes a throttle valve 9 and the above parallel flow heat exchanger, where the parallel flow heat exchanger is provided with two parallel flow heat exchangers arranged at intervals, one of the parallel flow heat exchangers is a condenser 10, the other is an evaporator 11, the throttle valve 9 includes a valve body 91, a valve core 92 and a valve seat 93, throttle structures formed by the valve core 92 and the valve seat 93 are both disposed in the valve body 91, the valve body 91 is made of aluminum, an inlet end of the valve body 91 is welded and fixed to an outlet pipe 8 of the parallel flow heat exchanger serving as the condenser 10, and an outlet end of the valve body 91 is welded and fixed to an inlet pipe 7 of the parallel flow heat exchanger serving as the evaporator 11.

Therefore, the integral micro-channel heat exchange system adopts the two parallel flow heat exchangers as the condenser 10 and the evaporator 11 of the system respectively, and is connected into a whole through the throttle valve 9, so that the parallel flow heat exchange system has all the beneficial effects of the parallel flow heat exchangers, can realize the parallel installation of the evaporator 11 and the condenser 10, has small distance, can be preassembled with the throttle valve 9, is convenient to assemble the evaporator 11 and the condenser 10 onto a whole machine as a whole, reduces the procedures of leakage detection and welding in the production of the dehumidifier, and greatly improves the production efficiency; furthermore, since the conventional throttle assembly is considered: the capillary tube, the throttle valve 9, the electronic expansion valve and the like are mostly copper components, if the inlet pipe 8 and the outlet pipe 8 of the parallel flow heat exchanger are changed into aluminum pipes, copper-aluminum welding can also occur between the throttle pipe and the throttle assembly, so the integral micro-channel heat exchange system also designs the valve body 91 of the throttle valve 9 into an aluminum pipe shell, the aluminum pipe shell and the inlet pipe 8 and the outlet pipe 8 of the parallel flow heat exchanger are made of the same material, and aluminum-aluminum welding is realized, thereby the problems of complex process, electrochemical corrosion at the welding position, high maintenance cost and the like caused by the copper-aluminum welding between the inlet pipe 8 and the outlet pipe 8 of the parallel flow heat exchanger and the throttle valve.

Illustratively, in order to prevent the throttle passage of the throttle valve 9 from being clogged, the throttle valve 9 is provided with a filter screen 94, and the filter screen 94 is disposed in the valve body 91 at the inlet end side of the valve body 91.

Preferably, the valve core 92, the valve seat 93 and the filter screen 94 are all made of stainless steel.

In addition, based on the integrated microchannel heat exchange system provided by the embodiment, the invention also provides a dehumidifier which comprises a compressor and the integrated microchannel heat exchange system, wherein the compressor is connected with the integrated microchannel heat exchange system to form a medium circulation loop. The dehumidifier comprises the integral microchannel heat exchange system, so that all the beneficial effects of the integral microchannel heat exchange system are achieved, and the description is not given.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.