WO2017020666A1

WO2017020666A1 - Heat exchanger

Info

Publication number: WO2017020666A1
Application number: PCT/CN2016/087596
Authority: WO
Inventors: 陆向迅; 魏文建; 宋剑
Original assignee: 丹佛斯微通道换热器（嘉兴）有限公司
Priority date: 2015-08-05
Filing date: 2016-06-29
Publication date: 2017-02-09
Also published as: CN106705499B; CN106705499A

Abstract

Disclosed is a heat exchanger, comprising: flat tubes (110), disposed on collecting pipes and in communication therewith; fins (120), disposed between the adjacent flat tubes (110), wherein at least one fin (120) is divided by a separating groove extending in a length direction of the flat tubes (110) into halves, and the separating grooves are provided with drain assemblies (130) therein; the drain assemblies (130) comprising thin plates, wherein edges of the thin plates of the drain assemblies (130) are connected to the fins (120) such that the condensate on the fins (120) can be directed to the drain assemblies (130) and drained out therethrough.

Description

Heat Exchanger

Technical field

The invention relates to a heat exchanger, in particular to a heat exchanger for various fields such as air conditioner, refrigeration, automobile and transportation.

Background technique

The system's energy efficiency requirements are increasing, and more and more heat exchangers are needed. When the heat exchanger is used as an evaporator, since the heat exchanger temperature is lower than the ambient temperature, condensed water appears on the surface. If it is not discharged as soon as possible, a water bridge or frosting will be formed, which will greatly reduce the heat exchanger. Heat exchange capacity.

1 shows a perspective view of a flat tube 10 and a fin 20 of a heat exchanger of the prior art; FIG. 2 shows a plan view of a flat tube 10 and a fin 20 of a heat exchanger of the prior art; Figure 3 shows a partial enlarged view of the flat tube 10 and the fins 20 of the heat exchanger of Figure 2.

As shown in FIG. 1 to FIG. 3, the existing microchannel heat exchanger is used as an evaporator, and the arrangement of the header tube is horizontally placed, and the flat tube 10 is placed vertically, so that the condensed water can be vertically arranged. The placed flat tube 10 flows out as quickly as possible. Due to the relationship between the flat tube 10 and the fins 20, the fins 20 and the flat tube 10 are in a generally perpendicular relationship, so the fins 20 are actually placed substantially horizontally in such an arrangement. The main heat exchange area due to heat exchange between the heat exchanger and the environment is on the fins 20, that is, the fins 20 are the main generating areas of the condensed water. The fins 20 placed substantially horizontally become the biggest obstacle to the drainage problem.

As shown in FIG. 1 to FIG. 3, in the prior art, in the connection region between the fin 20 and the flat tube 10, the condensed water 30 cannot flow down, and only along the direction of the wind, along the leeward side of the heat exchanger The tube 10 flows down (as shown in Figure 1).

In the prior art shown in Figures 1 to 3, the condensed water must flow through the width of the entire flat tube 10 in the direction of the wind to be able to flow down the leeward side of the flat tube 10, resulting in drainage efficiency of the heat exchanger. Low, reducing the heat exchange efficiency of the heat exchanger.

Summary of the invention

It is an object of the present invention to address at least one aspect of the above problems and deficiencies existing in the prior art.

It is an object of the present invention to provide a heat exchanger which is capable of improving the drainage efficiency of the heat exchanger and improving the heat exchange efficiency of the heat exchanger.

According to an aspect of the invention, there is provided a heat exchanger comprising: a flat tube disposed on a header and communicating with the header; and fins each disposed adjacent to the front and rear flat tubes between. At least one of the fins is divided into two halves by a partition groove extending along a length direction of the flat tube; a drain assembly is disposed in the partition groove; and an edge of the thin plate member of the drain assembly is lapped with the fin Connected to direct condensate on the fins to the drain assembly and exit through the drain assembly.

According to an exemplary embodiment of the present invention, the drainage assembly includes only one piece of corrugated sheet member, and the corrugated sheet member has a pitch greater than a pitch of the fin.

According to another exemplary embodiment of the present invention, a fluid passage is formed at a joint of the thin plate member of the drain assembly and the flat tube, and condensed water guided to the drain assembly flows out through the fluid passage.

According to another exemplary embodiment of the present invention, the drainage assembly includes a plurality of flat thin plate members, and the plurality of flat thin plate members are connected to each other by a connecting member.

According to another exemplary embodiment of the present invention, the sheet member of the drain assembly is arranged such that its surface is parallel to the surface of the flat tube.

According to another exemplary embodiment of the present invention, the thin plate member of the drain assembly is arranged such that its surface is inclined to the surface of the flat tube.

According to another exemplary embodiment of the present invention, the thin plate members of the drainage assembly are arranged to cross each other such that the entire drainage assembly is in the form of a grid.

According to another aspect of the present invention, there is provided a heat exchanger comprising a plurality of heat exchanger units arranged side by side, each heat exchanger unit comprising: a single row of flat tubes disposed on the header and associated with the set The flow tube is connected; and a single row of fins, each fin being disposed between the adjacent flat tubes. A drainage assembly is disposed between the two heat exchanger units adjacent to each other The piece includes a thin plate member; and an edge of the thin plate member of the drain assembly is overlapped with the fin to guide condensed water on the fin to the drain assembly and discharged through the drain assembly.

According to an exemplary embodiment of the present invention, the thin plate member of the drain assembly is disposed on the fins of one of the two heat exchanger units adjacent to the left and right and the fins of the other heat exchanger unit between.

According to another exemplary embodiment of the present invention, the drain assembly further includes a connecting plate that is vertically disposed in a flat tube of one of the two heat exchanger units adjacent to each other on the left and right sides Between the flat tube of another heat exchanger unit.

According to another exemplary embodiment of the present invention, the drain assembly includes a plurality of the thin plate members, and two thin plate members adjacent to each other are connected to each other by one of the connecting plates.

According to another exemplary embodiment of the present invention, the thickness of the connecting plate is equal to or smaller than the thickness of the flat tube; and the drain assembly is arranged such that the surface of the connecting plate does not exceed the front and rear direction The surface of the flat tube.

According to another exemplary embodiment of the present invention, the thin plate member of the drain assembly is corrugated, and the corrugated thin plate member has a wave pitch greater than a pitch of the fin.

According to another exemplary embodiment of the present invention, a drain groove extending in a longitudinal direction thereof is formed on the thin plate member.

According to another exemplary embodiment of the present invention, the drain assembly includes a plurality of flat thin plate members, and the plurality of flat thin plate members are disposed to be cross-connected to each other such that the entire drain assembly is mesh-shaped.

According to another exemplary embodiment of the present invention, an edge is formed on the thin plate member Its longitudinally extending drainage channel.

In the foregoing various exemplary embodiments of the present invention, since the drain assembly is separately provided for drainage on the heat exchanger, the edge of the thin plate member of the drain assembly is lapped with the fins of the heat exchanger so as to be placed on the fins The condensed water is guided to the drain assembly and smoothly discharged through the drain assembly, thereby improving the drainage efficiency and heat exchange efficiency of the heat exchanger.

Other objects and advantages of the present invention will be apparent from the description of the appended claims.

DRAWINGS

1 is a perspective view showing a flat tube and a fin of a heat exchanger in the prior art;

Figure 2 is a plan view showing a flat tube and fins of a heat exchanger of the prior art;

Figure 3 is a partial enlarged view showing the flat tubes and fins of the heat exchanger of Figure 2;

Figure 4 is a perspective view showing a heat exchanger having a single row of flat tubes in accordance with a first embodiment of the present invention;

Figure 5 shows a side view of the heat exchanger shown in Figure 4;

Figure 6 shows a plan view of the heat exchanger shown in Figure 4;

Figure 7 shows a plan view of a heat exchanger having a single row of flat tubes in accordance with a second embodiment of the present invention;

Figure 8 shows a side view of a heat exchanger having a single row of flat tubes in accordance with a third embodiment of the present invention;

Figure 9 is a perspective view showing the drain assembly of the heat exchanger shown in Figure 8;

Figure 10 shows a side view of the drain assembly shown in Figure 9;

Figure 11 shows a variation of the drain assembly;

Figure 12 shows another variation of the drain assembly;

Figure 13 shows a plan view of a heat exchanger having a plurality of heat exchanger units arranged side by side according to a first embodiment of the present invention, wherein the drain assembly is not shown;

Figure 14 is a perspective view showing the heat exchanger shown in Figure 13;

Figure 15 shows a plan view of the heat exchanger shown in Figure 14;

Figure 16 is a perspective view showing the drain assembly in the heat exchanger shown in Figure 14;

Figure 17 shows the stand of a drain assembly in a heat exchanger according to a second embodiment of the present invention. Body diagram

Figure 18 shows a variation of the thin plate member of the drain assembly shown in Figure 17;

Figure 19 is a perspective view showing a drain assembly in a heat exchanger according to a third embodiment of the present invention; and

Figure 20 shows a side view of a heat exchanger in accordance with a third embodiment of the present invention.

detailed description

The technical solutions of the present invention will be further specifically described below by way of embodiments and with reference to the accompanying drawings. In the description, the same or similar reference numerals indicate the same or similar parts. The description of the embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the general inventive concept of the invention, and should not be construed as a limitation of the invention.

In the following detailed description, numerous specific details are set forth Obviously, however, one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in the drawings in the drawings.

According to a general technical concept of the present invention, there is provided a heat exchanger comprising: a flat tube disposed on a header and communicating with the header; and fins each disposed adjacent to each other Between the flat tubes. At least one of the fins is divided into two halves by a partition groove extending along a length direction of the flat tube; a drain assembly is disposed in the partition groove, and the drain assembly includes a thin plate member, the thin plate member being horizontal with respect to a horizontal direction a slope greater than a slope of the fin relative to a horizontal direction; and an edge of the sheet member of the drain assembly is lapped with the fin to direct condensate water on the fin to the drain assembly, and Discharged through the drain assembly.

According to another general technical concept of the present invention, there is provided a heat exchanger comprising a plurality of heat exchanger units arranged side by side, each heat exchanger unit comprising: a single row of flat tubes disposed on the header and connected thereto The manifold is connected; and a single row of fins, each fin being disposed between the adjacent flat tubes. A drainage assembly is disposed between the two heat exchanger units adjacent to each other, the drainage assembly including a thin plate member having a slope with respect to a horizontal direction greater than a slope of the fin with respect to a horizontal direction; An edge of the sheet member of the drain assembly is lapped with the fin to direct condensed water on the fin to the drain assembly, and Discharged through the drain assembly.

First embodiment of a heat exchanger having a single row of flat tubes

Figure 4 shows a perspective view of a heat exchanger having a single row of flat tubes 110 in accordance with a first embodiment of the present invention; Figure 5 shows a side view of the heat exchanger shown in Figure 4; Figure 6 shows the exchange shown in Figure 4. Top view of the heater.

As shown in FIGS. 4-6, in the illustrated embodiment, the heat exchanger primarily includes a header (not shown), a single row of flat tubes 110, and a single row of fins 120. A single row of flat tubes 110 is disposed on the header and in communication with the header. Each of the fins 120 is disposed between the front and rear adjacent flat tubes 110 and welded to the surfaces of the front and rear adjacent flat tubes 110.

In the illustrated embodiment, as shown in FIGS. 4 to 6, each fin 120 is divided into two halves by a partition groove extending in the longitudinal direction of the flat tube 110 (vertical direction in the drawing). A drain assembly 130 is disposed in the dividing trough, the drain assembly 130 including a thin plate member having a slope of the sheet member relative to the horizontal direction that is greater than a slope of the fin 120 with respect to the horizontal direction. The edge of the sheet member of the drain assembly 130 is lapped with the fins 120 to direct the condensed water on the fins 120 onto the drain assembly 130 and exit through the drain assembly 130.

In the illustrated embodiment, as shown in FIGS. 4-6, the drain assembly 130 includes only one piece of corrugated sheet member, and the corrugated sheet member has a pitch greater than the pitch of the fins 120.

In the illustrated embodiment, the slope of the corrugated sheet member refers to the slope of the connecting portion connecting the peaks and troughs with respect to the horizontal direction. Similarly, the slope of the corrugated fin refers to the slope of the connecting section connecting the peaks and troughs with respect to the horizontal direction.

Second embodiment of a heat exchanger with a single row of flat tubes

Figure 7 shows a top view of a heat exchanger with a single row of flat tubes in accordance with a second embodiment of the present invention.

The main difference between the heat exchanger shown in Fig. 7 and the heat exchanger shown in Figs. 4 to 6 is that the structure of the drain assembly is different.

In the heat exchanger shown in FIG. 7, the thin plate member of the drain assembly 230 and the flat tube 210 A fluid passage 231 is formed at the joint. In this way, the condensed water directed to the drain assembly 230 can be conveniently vented via the fluid passage 231. In addition, the heat exchanger shown in FIG. 7 is substantially the same as the heat exchanger shown in FIGS. 4 to 6, and the same content will not be described again for the sake of brevity.

Third embodiment of a heat exchanger having a single row of flat tubes

Figure 8 is a side elevational view of a heat exchanger having a single row of flat tubes in accordance with a third embodiment of the present invention; Figure 9 is a perspective view of the drain assembly of the heat exchanger shown in Figure 8; Figure 10 is shown in Figure 9 Side view of the drainage assembly.

The main difference between the heat exchanger shown in Figs. 8 to 10 and the heat exchanger shown in Figs. 4 to 6 is that the structure of the drain assembly is different.

In the heat exchanger shown in FIGS. 8 to 10, the drain assembly 330 includes a plurality of flat thin plate members 331, and the plurality of flat thin plate members 331 are connected to each other by a connecting member 332. The thin plate member 331 of the drain assembly 330 is arranged such that its surface is parallel to the surface of the flat tube 310. In addition, the heat exchangers shown in FIGS. 8 to 10 are substantially the same as the heat exchangers shown in FIGS. 4 to 6, and the same contents will not be described again for the sake of brevity.

Note that the drain assembly of the present invention is not limited to the foregoing embodiment. For example, Figure 11 shows a variation of the drain assembly 330'. As shown in Fig. 11, the thin plate member 331' of the drain assembly 330' is arranged such that its surface is inclined to the surface of the flat tube. Figure 12 shows another variation of the drain assembly 330. As shown in Figure 12, the sheet members 331" of the drain assembly 330" are arranged to intersect each other such that the entire drain assembly 330" is in the form of a grid.

First embodiment of a heat exchanger having a plurality of heat exchanger units arranged side by side

Figure 13 shows a plan view of a heat exchanger having a plurality of heat exchanger units arranged side by side according to a first embodiment of the present invention, wherein the drain assembly is not shown; Figure 14 shows a perspective view of the heat exchanger shown in Figure 13; Figure 15 shows a plan view of the heat exchanger shown in Figure 14; Figure 16 shows a perspective view of the drain assembly in the heat exchanger shown in Figure 14.

As shown in Figures 13 to 16, the heat exchanger includes a plurality of heat exchanger units arranged side by side. Each heat exchanger unit mainly includes a header (not shown), a single row of flat tubes 1100 and a single row of fins. Slice 1200. A single row of flat tubes 1100 of each heat exchanger is disposed on the header and in communication with the header. Each of the fins 1200 is disposed between the front and rear adjacent flat tubes 1100 and welded to the surfaces of the front and rear adjacent flat tubes 1100.

In the illustrated embodiment, as shown in FIGS. 13 to 16, a drain assembly 1300 is disposed between two adjacent heat exchanger units, the drain assembly 1300 including a thin plate member 1310, the thin plate member 1310 being opposed to The slope in the horizontal direction is greater than the slope of the fin 1200 with respect to the horizontal direction. The edge of the sheet member 1310 of the drain assembly 1300 is lapped with the fins 1200 to direct the condensed water on the fins 1200 onto the drain assembly 1300 and exit through the drain assembly 1300.

In the illustrated embodiment, as shown in FIGS. 13 to 16, the thin plate member 1310 of the drain assembly 1300 is disposed in the fin 1200 of one of the two heat exchanger units adjacent to the left and right and the other The fins 1200 of the heat exchanger unit; and the drain assembly 1300 further includes a connecting plate 1320 that is vertically disposed in a flat tube of one of the two heat exchanger units adjacent to each other 1100 is between the flat tube 1100 of the other heat exchanger unit.

In the illustrated embodiment, as shown in FIGS. 13 to 16, the drain assembly 1300 includes a plurality of thin plate members 1310, and the two thin plate members 1310 adjacent to each other are connected to each other by a connecting plate 1320.

In the illustrated embodiment, as shown in FIGS. 13 to 16, the thickness of the connecting plate 1320 is equal to or smaller than the thickness of the flat tube 1100; and the drain assembly 1300 is arranged such that the surface of the connecting plate 1320 does not exceed in the front-rear direction The surface of the flat tube 1100. In this way, wind resistance can be reduced.

In the illustrated embodiment, as shown in FIGS. 13-16, each of the thin plate members 1310 of the drain assembly 1300 is corrugated, and the pitch of the corrugated thin plate member 1310 is greater than the pitch of the fins 1200.

Second embodiment of a heat exchanger having a plurality of heat exchanger units arranged side by side

Figure 17 is a perspective view showing a drain assembly in a heat exchanger according to a second embodiment of the present invention.

The main difference between the heat exchanger shown in Fig. 17 and the heat exchanger shown in Figs. 13 to 16 is that the structure of the drain assembly is different.

In the heat exchanger shown in FIG. 7, the drain assembly 2300 includes a plurality of flat thin plate members 2310, and the plurality of flat thin plate members 2310 are connected to each other by a connecting member 2320. The sheet member 2310 of the drain assembly 2300 is arranged such that its surface is parallel to the surface of the flat tube.

Note that the drain assembly of the present invention is not limited to the foregoing embodiment. For example, the drain assembly can be the drain assembly 330' shown in Figure 11 or can be the drain assembly 330" shown in Figure 12.

Figure 18 shows a variation of the sheet member 2310' of the drain assembly shown in Figure 17. As shown in Fig. 18, a drain groove 2311' extending in the longitudinal direction thereof is formed on the thin plate member 2310'. Thus, the condensed water guided to the thin plate member 2310' can be easily discharged through the drain groove 2311'.

Third embodiment of a heat exchanger having a plurality of heat exchanger units arranged side by side

Figure 19 is a perspective view showing a drain assembly in a heat exchanger according to a third embodiment of the present invention; and Figure 20 is a side view showing a heat exchanger according to a third embodiment of the present invention.

As shown in Figures 19 and 20, in the illustrated embodiment, the drain assembly 3300 includes a plurality of flat sheet members 3310, and a plurality of flat sheet members 3310 are disposed to cross-connect with each other such that the entire drain assembly The 3300 is gridded.

As shown in FIGS. 19 and 20, in the illustrated embodiment, a drain groove 3311 extending in the longitudinal direction thereof is formed on the thin plate member 3310. Thus, the condensed water guided to the thin plate member 3310 can be easily discharged through the drain groove 3311.

As shown in FIGS. 19 and 20, in the illustrated embodiment, the thin plate member 3310 may be disposed such that its surface is inclined to the surface of the flat tube 3100.

Those skilled in the art will appreciate that the embodiments described above are exemplary and can be modified by those skilled in the art, as described in the various embodiments. The structure can be freely combined without any structural or principle conflicts.

The present invention has been described with reference to the accompanying drawings, which are intended to be illustrative of the preferred embodiments of the invention.

While some embodiments of the present general inventive concept have been shown and described, it will be understood by those of ordinary skill in the art The scope is defined by the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps. The word "a" or "an" does not exclude a plurality. In addition, any element numbering of the claims should not be construed as limiting the scope of the invention.

Claims

A heat exchanger comprising:

a flat tube (110) disposed on the header and communicating with the header; and

a fin (120), each fin (120) being disposed between the front and rear adjacent flat tubes (110),

It is characterized by:

At least one of the fins (120) is divided into two halves by a dividing groove extending along a length of the flat tube (110);

A drain assembly (130) is disposed in the separation groove, the drain assembly (130) including a thin plate member;

An edge of the thin plate member of the drain assembly (130) is overlapped with the fin (120) to guide condensed water on the fin (120) onto the drain assembly (130) and pass through The drain assembly (130) is discharged.
The heat exchanger according to claim 1 wherein:

The drain assembly (130) includes only one piece of corrugated sheet member, and the corrugated sheet member has a wave pitch greater than a pitch of the fins (120).
The heat exchanger according to claim 2, wherein:

A fluid passage (231) is formed at a junction of the thin plate member of the drain assembly (230) and the flat tube (210), and condensed water guided to the drain assembly (130) passes through the fluid passage (231) ) outflow.
The heat exchanger according to claim 1 wherein:

The drain assembly (330) includes a plurality of flat thin plate members (331), and the plurality of flat thin plate members (331) are connected to each other by a connecting member (332).
The heat exchanger according to claim 4, wherein:

The sheet member (331) of the drain assembly (330) is arranged such that its surface is parallel to the surface of the flat tube (310).
The heat exchanger according to claim 4, wherein:

The sheet member (331') of the drain assembly (330') is arranged such that its surface is inclined to the surface of the flat tube.
The heat exchanger according to claim 4, wherein:

The thin plate members (331") of the drain assembly (330") are arranged to cross each other such that the entire drain assembly (330") is in the form of a grid.
A heat exchanger comprising a plurality of heat exchanger units arranged side by side, each heat exchanger unit comprising:

a single row of flat tubes (1100) disposed on the header and in communication with the header; and

a single row of fins (1200), each fin (1200) being disposed between the front and rear flat tubes (1100),

It is characterized by:

A drain assembly (1300) is disposed between the two heat exchanger units adjacent to each other, the drain assembly (1300) including a thin plate member (1310);

An edge of the sheet member (1310) of the drain assembly (1300) is overlapped with the fin (1200) to direct condensed water on the fin (1200) to the drain assembly (1300), And discharged through the drain assembly (1300).
The heat exchanger according to claim 8 wherein:

The thin plate member (1310) of the drain assembly (1300) is disposed on the fins (1200) of one of the two heat exchanger units adjacent to the left and right and the fins of the other heat exchanger unit (1200) )between.
The heat exchanger according to claim 9, wherein:

The drain assembly (1300) further includes a connecting plate (1320) vertically disposed on a flat tube (1100) of one of the two heat exchanger units adjacent to each other on the left and right sides Between the flat tube (1100) of the other heat exchanger unit.
The heat exchanger according to claim 10, wherein:

The drain assembly (1300) includes a plurality of the thin plate members (1310), and two thin plate members (1310) adjacent to each other are connected to each other through one of the connecting plates (1320).
The heat exchanger according to claim 11 wherein:

The thickness of the connecting plate (1320) is equal to or smaller than the thickness of the flat tube (1100);

The drain assembly (1300) is arranged such that the surface of the web (1320) does not extend beyond the surface of the flat tube (1100) in the front-rear direction.
The heat exchanger according to claim 10, wherein:

The thin plate member (1310) of the drain assembly (1300) is corrugated, and the corrugated thin plate member (1310) has a wave pitch greater than the pitch of the fins (1200).
The heat exchanger according to claim 8 wherein:

The drain assembly (2300) includes a plurality of flat thin plate members (2310), and a plurality of flat thin plate members (2310) are connected to each other by a connecting member (2320).
The heat exchanger according to claim 14, wherein:

The sheet member (2310) of the drain assembly (2300) is arranged with its surface parallel to the surface of the flat tube.
The heat exchanger according to claim 14, wherein:

The sheet member of the drain assembly is arranged such that its surface is inclined to the surface of the flat tube.
A heat exchanger according to claim 14, wherein a drain groove (2311') extending in a longitudinal direction thereof is formed on said thin plate member (2310').
The heat exchanger according to claim 8 wherein:

The drain assembly (3300) includes a plurality of flat sheet members (3310), and a plurality of flat sheet members (3310) are disposed to be cross-connected with each other such that the entire drain assembly (3300) is in a grid shape.
A heat exchanger according to claim 18, wherein a drain groove (3311) extending in a longitudinal direction thereof is formed on said thin plate member (3310).