CN206291772U - Multi-channel heat exchanger and its fin - Google Patents

Abstract

The utility model discloses a kind of multi-channel heat exchanger and its fin, and fin is arranged between the heat exchanger tube of multi-channel heat exchanger, and the fin includes at least one plain film, and multiple plain films are arranged along the thickness direction of the plain film；The lateral surface of the plain film of both sides is arranged in towards the corresponding heat exchanger tube.Multi-channel heat exchanger and its fin that the utility model is provided, plain film side is towards heat exchanger tube, plain film is extended along heat exchanger tube length direction, so that multi-channel heat exchanger is in actual working state, when especially header is distributed up and down, heat exchanger tube and plain film turn into flow-guiding structure, and condensed water or defrosting water for being formed on fin etc. directly can flow downward along plain film, so as to be effectively discharged out rapidly, it is ensured that what is exchanged heat between air and plain film is normally carried out.

Description

Multi-channel heat exchanger and its fin

Technical field

The utility model is related to technical field of heat exchangers, and in particular to a kind of multi-channel heat exchanger and its fin.

Background technology

Refer to Fig. 1-2, Fig. 1 is the structural representation that fin is connected with heat exchanger tube in traditional multi-channel heat exchanger；Fig. 2 is The structural representation of fin in Fig. 1.

Heat exchanger is provided with header, and some heat exchanger tubes 20 ' are provided between two headers, in order to improve heat transfer effect, The structure of fin 30 ' as shown in Figure 2 is provided between heat exchanger tube 20 ', fin 30 ' is by a whole piece fin base material undulate bent Into as shown in figure 1, equivalent to being generally perpendicularly provided with some fin units 301 ', some wings between two heat exchanger tubes 20 ' Blade unit 301 ' joins end to end, and two adjacent fins unit 301 ' is V-shaped.The position that adjacent fins unit 301 ' connects with it is adjacent Heat exchanger tube 20 ' contact, heat transfer is improved and the efficiency of air heat-exchange.

When heat exchanger is used, condensed water is easily produced, defrost after the frosting of the surface of fin unit 301 ' can also produce defrost Water.For the ease of draining, often header is arranged up and down, and heat exchanger tube 20 ' is correspondingly, some vertically located at therebetween Fin unit 301 ' is substantially in horizontally disposed.

This arrangement creates following technical problems：

The condensed water or defrosting water of above-mentioned generation, it is difficult to discharge, because the condensed water on top or defrosting water are needed from top Fin unit 301 ' flow through all of fin unit 301 ' in lower section.Now, water can influence heat transfer efficiency in flow process, increase Big windage, while bottom residual water can be more poly- more, particularly to frosting may occur operating mode under, the ponding meeting of heat exchanger bottom Frosting situation is caused further to deteriorate, frost layer more not easy-clear.

In view of this, how multi-channel heat exchanger is improved, condensed water or defrosting water is quickly discharged, be this area Technical staff's technical problem urgently to be resolved hurrily.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of multi-channel heat exchanger and its fin, the multichannel is changed Hot device can be such that condensed water or defrosting water quickly discharges.

The fin of the multi-channel heat exchanger that the utility model is provided, is arranged between the heat exchanger tube of multi-channel heat exchanger, institute Stating fin includes at least one plain film, and multiple plain films are arranged along the thickness direction of the plain film；It is arranged in the described of both sides The side of plain film is towards the corresponding heat exchanger tube.

Alternatively, the plain film is parallel to each other.

Alternatively, at least a piece of lateral surface for being arranged in the plain film of both sides is provided be connected with the heat exchanger tube outer Side connector.

Alternatively, the outer connectors include the extension extended along the plain film thickness direction, and relatively described The shape of the connecting portion of extension bending, the length of the extension and the connecting portion is mutually fitted with the surface of the heat exchanger tube Match somebody with somebody.

Alternatively, at least one side of at least a portion plain film is provided with the connection for connecting the adjacent plain film Part.

Alternatively, it is equipped with the connector on two sides of at least a portion plain film.

Alternatively, the connector includes the extension extended along the plain film thickness direction, and relatively described extension The connecting portion of portion's bending, the connecting portion is connected with the surface of the adjacent plain film.

Alternatively, the position of the connector on the adjacent plain film is mutually staggered.

The utility model also provides a kind of multi-channel heat exchanger, including heat exchanger tube and between the adjacent heat exchanger tube Fin, the fin is the fin described in any of the above-described, and the fin includes at least a piece of plain film, and the plain film is along heat exchanger tube Orientation arrangement, each plain film along heat exchanger tube length direction extend.

Alternatively, the plain film for being arranged in both sides is adjacent with the heat exchanger tube, and is arranged on the lateral surface of the plain film On outer connectors be connected with the heat exchanger tube.

Alternatively, the plain film for being arranged in both sides is adjacent with the heat exchanger tube, and the plain film lateral surface directly with The lateral surface laminating of the heat exchanger tube.

Alternatively, it is arranged between at least a piece of lateral surface of the plain film of both sides and the heat exchanger tube and is additionally provided with A piece of plain film, the plain film towards the side of the heat exchanger tube be plane.

Alternatively, the heat exchanger tube is flat tube, and each plain film is parallel with the flat tube.

Multi-channel heat exchanger and its fin that the utility model is provided, its plain film are arranged along the thickness direction of plain film, arrangement Both sides plain film lateral surface towards corresponding heat exchanger tube so that the length direction of plain film is basic with the length direction of heat exchanger tube It is consistent, compared to the setting substantially vertical with heat exchanger tube of the fin unit in fin between heat exchanger tube in background technology, we Plain film set-up mode in case causes multi-channel heat exchanger in actual working state, when especially header is distributed up and down, heat exchange Pipe and plain film turn into flow-guiding structure, and condensed water or defrosting water for being formed on plain film etc. can be directly along plain film to dirty It is dynamic, so as to be effectively discharged out rapidly, it is ensured that what is exchanged heat between air and plain film is normally carried out.

Brief description of the drawings

Fig. 1 is the structural representation that fin is connected with heat exchanger tube in traditional multi-channel heat exchanger；

Fig. 2 is the structural representation of fin in Fig. 1；

Fig. 3-1 is provided the structural representation of the first specific embodiment of multi-channel heat exchanger by the utility model；

Fig. 3-2 is the structural representation of plain film in Fig. 3-1；

Fig. 3-3 is the front view of plain film in Fig. 3-2；

Fig. 3-4 is the upward view of Fig. 3-3；

Fig. 3-5 is the close-up schematic view of plain film link position in Fig. 3-1；

Fig. 3-6 is another turnup structure of plain film in Fig. 3-1 multi-channel heat exchangers；

Fig. 3-7 is the front view of plain film in Fig. 3-6；

Fig. 3-8 is the upward view of Fig. 3-7；

Fig. 4-1 is provided the structural representation of plain film in multi-channel heat exchanger the third specific embodiment by the utility model Figure；

Fig. 4-2 is the front view of Fig. 4-1；

Fig. 4-3 is the upward view of Fig. 4-2；

Fig. 4-4 is plain film assembling schematic diagram in Fig. 4-1；

Fig. 5-1 is provided the structural representation of plain film in the 4th kind of specific embodiment of multi-channel heat exchanger by the utility model Figure；

Fig. 5-2 is the side view of Fig. 5-1；

Fig. 5-3 is the assembling schematic diagram of plain film in Fig. 5-1；

Fig. 5-4 is the close-up schematic view of plain film link position in Fig. 5-3；

Fig. 6-1 is provided the structural representation of plain film in the 5th kind of specific embodiment of multi-channel heat exchanger by the utility model Figure；

Fig. 6-2 is the front view of Fig. 6-1；

Fig. 6-3 is the side view of Fig. 6-2；

Fig. 6-4 is the structural representation of the unit of the fin coordinated with plain film in Fig. 6-1；

Fig. 6-5 is the front view of Fig. 6-4；

Fig. 6-6 is the side view of Fig. 6-4；

The schematic diagram that Fig. 6-7 is connected for plain film in Fig. 6-1 with plain film in Fig. 6-4；

Fig. 6-8 is the structural representation of the plain film that two sides set swells；

Fig. 6-9 is the side view of Fig. 6-8；

Fig. 6-10 is the structural representation of the plain film coordinated with plain film in Fig. 6-8；

Fig. 6-11 is the side view of Fig. 6-10；

The schematic diagram that Fig. 6-12 is connected for plain film in Fig. 6-8 with plain film in Fig. 6-10；

Fig. 7-1 is provided the structural representation of plain film in second specific embodiment of multi-channel heat exchanger by the utility model Figure；

Fig. 7-2 is the front view of Fig. 7-1；

Fig. 7-3 is the right view of Fig. 7-2；

Fig. 7-4 is the upward view of Fig. 7-2；

Fig. 8-1 is shown for figure by the structure that the utility model provides plain film in the 6th kind of specific embodiment of multi-channel heat exchanger It is intended to；

Fig. 8-2 is the side view of Fig. 8-1.

In Fig. 1-2：

20 ' heat exchanger tubes, 30 ' fins, 301 ' fin units；

Description of reference numerals is as follows in Fig. 3-1~8-2：

10 headers, 20 heat exchanger tubes

30 plain films, 301L shapes flange, 302 through holes, 303 shutters, 304 bridge sides, 305 annular flange, 305a flange, 306 End bending edge, 307 swells.

Specific embodiment

In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and tool The utility model is described in further detail for body embodiment.

The utility model, multi-channel heat exchanger is provided with header (header 10 as shown in figure 3-1), two headers it Between be provided with some heat exchanger tubes, the fluid in header flows through heat exchanger tube and realizes heat exchange, sets fin between heat exchanger tube, improves heat exchange Efficiency.Specifically, the fin in the utility model between heat exchanger tube includes at least one plain film, and each plain film is along heat exchanger tube Length direction is extended straightly, and multiple plain film is arranged along the thickness direction of plain film, when being specifically installed between heat exchanger tube, Multiple plain films are arranged along the orientation of heat exchanger tube, are arranged in the lateral surface of plain film of both sides towards corresponding heat exchanger tube.Work as wing When piece only includes a plain film, then the two of plain film side is respectively facing corresponding heat exchanger tube.The length direction of plain film and heat exchange The length direction of pipe is consistent substantially, then heat exchanger tube and plain film turn into flow-guiding structure, on plain film formed condensed water or Person's defrosting water etc. directly can flow downward along plain film, so as to be effectively discharged out rapidly, it is ensured that changed between air and plain film Hot is normally carried out.Following each embodiments are specifically referred to understand.

Fig. 3-1 is refer to, Fig. 3-1 is provided the structure of the first specific embodiment of multi-channel heat exchanger by the utility model Schematic diagram.

In the embodiment, multi-channel heat exchanger is provided with header 10, and some heat exchanger tubes 20 are provided between two headers 10, Fluid in header 10 flows through heat exchanger tube 20 and realizes heat exchange, and fin is set between heat exchanger tube 20, improves heat exchange efficiency, heat exchanger tube 20 can be flat tube.Specifically, the fin in the present embodiment between heat exchanger tube 20 includes at least one plain film 30, along heat exchanger tube 20 length direction is extended straightly, between plain film 30 and heat exchanger tube 20 and plain film 30 (is only set a piece of each other During plain film 30, only between plain film 30 and heat exchanger tube 20), form the heat exchanger channels with air heat-exchange.Multiple plain films 30 are along plain film 30 thickness directions are arranged, and after installation, plain film 30 is arranged along the orientation of heat exchanger tube 20, when heat exchanger tube 20 is flat tube, plain film 30 arrange along the thickness direction of heat exchanger tube 20, and the orientation of plain film is consistent with the orientation of heat exchanger tube so that between plain film And the heat exchanger channels between plain film and heat exchanger tube are just to the flow direction of air, be conducive to reducing windage.Two sides of plain film 30 That is two upper and lower sides are located in Fig. 3-3, the face that Fig. 3-3 is faced is the one side of plain film 30, and another side is Fig. 3's-3 The back side, side is the surface wider of plain film 30, and side be arranged in parallel with the surface of heat exchanger tube 20, i.e., the width of plain film 30 also with The width of heat exchanger tube 20 keeps basically identical.

Therefore, in this programme, the lateral surface (towards the side of heat exchanger tube 20) of plain film 30 is big with the lateral surface of heat exchanger tube 20 Cause is parallel, when being substantially parallel, it is clear that heat exchange wind resistance is minimum, has certain angle with heat exchanger tube 20 even if not parallel, also may be used To realize the purpose of this utility model.Through-thickness is arranged, and is also not limited to all of plain film 30 and is be arranged in parallel.

Compared to the setting substantially vertical with heat exchanger tube 20 ' of the fin unit 301 ' between heat exchanger tube 20 ' in background technology, whole The individual undulate of fin 30 ' is extended, and single plain film 30 is the side being extended along the length direction of heat exchanger tube 20 in this programme Formula so that multi-channel heat exchanger in actual working state, such as when the header shown in figure is distributed about 10, heat exchanger tube 20 with And plain film 30 turns into flow-guiding structure, condensed water or defrosting water for being formed on plain film 30 etc. can be directly along plain film 30 to dirty It is dynamic, so as to be effectively discharged out rapidly, it is ensured that what is exchanged heat between air and plain film 30 is normally carried out.In the conventional technology, wing Piece 30 ' is distributed between heat exchanger tube 20 with wavy shaped configuration, it is seen then that the distribution mode of plain film 30 in fin of the present utility model, Concrete structure is clearly distinguishable from traditional vertical distribution mode and wavy shaped configuration, employs new along the length of heat exchanger tube 20 Direction is disposed to extend, and preferably parallel with heat exchanger tube 20.Fin structure arrangement in this programme, with from the point of view of Fig. 3-1, left and right Heat exchanger channels are formed between the plain film 30 of distribution, and traditional fin 30 ' forms heat exchange and leads to by the fin unit 301 ' being distributed up and down Road, structure is entirely different.

Understand that the surface of plain film 30 is not limited to be arranged in parallel with the surface of heat exchanger tube 20, can substantially put down based on above-mentioned principle OK, the feasible scheme that is is set in certain angle in theory, but in the state of being set in parallel in generally, is conducive to and sky Gas realizes preferably heat exchange, and installs also more convenient.In addition, " plain film " described in text, is relative to wing in background technology For the waveform of piece 30 ' is set, and do not require that the surface of each plain film 30, can from following examples for smooth flat Arrive, various connecting-piece structures can be processed on plain film 30.

In addition, in the embodiment, the lateral surface for being arranged in two plain films 30 of both sides is equipped with outer connectors, for inciting somebody to action Fin and heat exchanger tube 20 are attached and complete the heat transfer effect between heat exchanger tube 20 and fin.Connection also is provided between plain film 30 The connector of adjacent plain film 30.Connecting the connector between the outside connection of heat exchanger tube and plain film can include along the plain film 30 The extension that thickness direction extends, and the connecting portion that relatively described extension bends, connecting portion and adjacent plain film 30 or heat exchange The surface connection of pipe 20.The setting of outer connectors and connector contribute between plain film 30 and plain film 30 and heat exchanger tube 20 it Between connection, while can also increase heat exchange area, improve heat exchange efficiency.

The length of the extension of outer connectors and the shape of connecting portion are adapted with the surface of heat exchanger tube 20, for example, change When heat pipe 20 is elliptical tube, the distance of the lateral surface of heat exchanger tube and plain film can because the position of outer connectors is different area Not, and then the length of extension needs difference to set, and the lateral surface of elliptical tube is arc, the shape of connecting portion need with it is ellipse The lateral surface of pipe is adapted and just can guarantee that and be connected well with elliptical tube.Outer connectors and the connection for connecting heat exchanger tube are adjacent The structure of the connector of plain film can be the same or different, and be easy to unify processing when identical.

Connector specifically can be as shown in Fig. 3-2~3-5, and Fig. 3-2 is the structural representation of plain film 30 in Fig. 3-1；Fig. 3-3 It is the front view of plain film 30 in Fig. 3-2；Fig. 3-4 is the upward view of Fig. 3-3；Fig. 3-5 is the office of the link position of plain film 30 in Fig. 3-1 Portion's enlarged diagram.

In figure, connector is L-shaped flange 301, and two sides of L-shaped flange 301 are the first flange and the second flange, and first turns over While starting from the side of plain film 30, the second flange is located at the end of the first flange, and the first flange is used to isolate adjacent plain film 30, second Flange is used to abut against the side of plain film 30, then the first flange is extension, and the second flange is connecting portion.

In the embodiment, plain film 30 is provided with through hole 302, as the first flange of extension located at the edge of through hole 302, the Two flange are turned down laterally.In this programme, connector can be stamped and formed out, and through hole 302 is correspondingly stamped and formed out, naturally it is also possible to Formed by techniques such as shearings, be not limited here.

In the present embodiment, a side surface of single plain film 30 can be stamped and formed out some row's L-shaped flange 301, some row's L-shaped Flange 301 is distributed along the length direction of plain film 30, and row's L-shaped flange 301 includes some along the spaced apart L of the width of plain film 30 Shape flange 301, may be defined as flange row.Another side surface is also stamped and formed out some row's L-shaped flange 301, arrangement mode with it is foregoing L-shaped flange 301 set unanimously, and the flange row of a side surface comes the length side of plain film 30 with the flange of another side surface Upward interval setting.

After being attached between heat exchanger tube 20, the L-shaped flange 301 of the one side of plain film 30 and adjacent plain film 30 or heat exchanger tube 20 Side can lean, the L-shaped flange 301 of another side also leans with adjacent plain film 30 or the side of heat exchanger tube 20, from And form the state that is connected as in Figure 3-5.Then, between plain film 30 and between plain film 30 and heat exchanger tube 20, lead to Cross L-shaped flange 301 to be welded and fixed, such as furnace brazing, or other welding manners are sent into after overall package.Plain film 30 can be with one Piece is a piece of to be attached between heat exchanger tube 20, it is also possible to overall against reinstalling after assembling between heat exchanger tube 20.

For the utility model, connector can be set to mutually be not attached to, such as some L-shaped flange 301 shown in figure, even Fitting is mutually not attached to be conducive to the discharge of condensed water or defrosting water.And, connector not only plays connection positioning and heat transfer is changed The effect of heat, can make air-flow be detoured in connector, so as to strengthen heat transfer effect with rough air.

The L-shaped flange 301 shown in figure extends down, it will be understood that L-shaped flange 301 is in putting down towards the surface of plain film 30 On face, towards either direction extend, as seen in figures 3-6, Fig. 3-6 be Fig. 3-1 multi-channel heat exchangers in plain film 30 it is another The structure of L-shaped flange 301 is planted, Fig. 3-7 is the front view of plain film 30 in Fig. 3-6；Fig. 3-8 is the upward view of Fig. 3-7.

L-shaped flange 301 in Fig. 3-6 is extended to two sides, i.e., turned down along the width of plain film 30.Fig. 3-2,3- In 6 carry out punching press on the base material of plain film 30 after, form L-type flange 301, through hole 302 is substantially square in figure, it is clear that other shapes Shape is also possible, and this programme is not restricted.

The utility model is not construed as limiting to the quantity of plain film 30 between adjacent heat exchange tubes 20, can adjust according to actual needs It is whole, to meet the requirement of different spacing between heat exchanger tube 20.By adjusting the quantity of connector and plain film 30, so as to adjust Heat exchange efficiency, meets the demand of heat exchange amount.

Adjacent plain film 30 is realized in above-mentioned setting by the way of L-shaped flange 301, or plain film 30 and adjacent heat exchange tubes 20 company Connect positioning, connector either L-shaped flange 301 or other structures, the arrangement mode of connector are not limited to aforesaid way, can Connector is set with an only side surface, it is also possible to which both sides are respectively provided with, and both sides are respectively provided with can increase contact area, improve heat exchange effect Rate, can be adjusted flexibly according to the quantity of actual plain film 30, connection heat exchange demand, processing technology etc..Certainly, two heat exchanger tubes 20 it Between, the plain film 30 adjacent with heat exchanger tube 20 can set outer connectors in the one side towards heat exchanger tube 20, in order to change Heat pipe 20 is connected.In addition, when the two sides of plain film 30 are respectively provided with connector, interval setting is also not limited to, in fact, connector Without setting in a row-shaped, can be with scattering device, or other arrangement modes, as long as realizing against to weld all arrangements of positioning Mode.

Fig. 4-1~4-2 is refer to, Fig. 4-1 provides multi-channel heat exchanger second specific embodiment by the utility model The structural representation of middle fin；Fig. 4-2 is the front view of Fig. 4-1；Fig. 4-3 is the upward view of Fig. 4-2.

The embodiment is also consistent with the principle of above-described embodiment, and simply in the embodiment, connector is not L-shaped flange 301, but bridge piece 304, as shown in Fig. 4-1, the bridge piece 304 now as connector is corresponding with the position of through hole 302.Can manage Solution, the plain film 30 of this kind of structure, when being assembled with adjacent plain film 30, bridge piece 304 is resisted against adjacent plain film 30 or heat exchanger tube 20 Surface, equally, then can be welded and fixed between plain film 30 and between plain film 30 and heat exchanger tube 20 by bridge piece 304.Bridge piece 304 A side or two sides of plain film 30 can be equally located at, it is consistent with the principle of L-shaped flange 301 described above, do not go to live in the household of one's in-laws on getting married herein State.In Fig. 4-2, connection end between bridge piece 304 and plain film 30 or so distribution is distributed, now along the length direction of plain film 30 Help to stream, improve heat transfer effect.Obviously, the connection end of bridge piece 304 is not limited to length direction distribution, for example can be along plain film 30 widths are distributed.

It is appreciated that being based on connection requirement, it is not required that all of plain film 30 is equipped with connector, as long as at least a portion At least one side of plain film 30 is provided with the connector of the adjacent plain film 30 of connection or heat exchanger tube 20, by adjacent plain film 30 or flat Piece 30 is coupled together with heat exchanger tube 20.

In the present embodiment, when connector is processed as 304 structure of bridge piece, the fin between heat exchanger tube 20 can include not setting The plain film 30 of connector is put, as shown in 4-4, Fig. 4-4 is the assembling schematic diagram of plain film 30, two plain films for being provided with bridge piece 304 in 4-1 Between 30, a plain film 30 for being not provided with connector is folded with.

Seen from the above description, when setting bridge piece 304, bridge piece 304 is corresponding with the position of through hole 302, if two identicals The adjacent combination of plain film 30, then the bridge piece 304 of a plain film 30 may be against the through hole 302 to another plain film 30.In this programme, setting Putting when set one between two plain films 30 of bridge piece 304 and being not provided with the plain film 30 of connector, then bridge piece 304 can avoid through hole 302 position, so that bridge piece 304 is resisted against the surface of the plain film 30 for being not provided with connector completely, it is ensured that connection positioning Effect.

Certainly, the plain film 30 for being not provided with being not provided with connector is also feasible, such as, the adjacent position of bridge piece 304 is mutual The wrong connection effect same from the plain film 30 that then can also keep and add to be not provided with connector.Or, plain film 30 is without through hole 302, bridge piece 304 is directly anchored on plain film 30, then need not equally add the plain film 30 for being not provided with connector, it will be understood that punching Swaging is relatively simple into the mode of bridge piece 304.

The embodiment is consistent with above-described embodiment principle, is still a kind of variant embodiment of the upper connector of plain film 30.Such as Shown in Fig. 5-1~5-4, Fig. 5-1 provides plain film 30 in multi-channel heat exchanger the third specific embodiment by the utility model Structural representation；Fig. 5-2 is the side view of Fig. 5-1；5-3 is the assembling schematic diagram of plain film 30 in Fig. 5-1；Fig. 5-4 is in Fig. 5-3 The close-up schematic view of the link position of plain film 30.

As illustrated, being provided with through hole 302 on plain film 30, extension is set at the edge of through hole 302, extension is annular, Annular flange 305 i.e. shown in figure, the edge of annular flange 305 is circumferentially arranged with some small flange 305a, small flange 305a That is connecting portion.

, in assembling, for identical connector arrangement, the annular flange 305 of plain film 30 is corresponding to adjacent for plain film 30 The position of through hole 302 of plain film 30, and small flange 305a can abut against the side of plain film 30.Now, based on small flange 305a Presence, improve connection effect in terms of, connector need not avoid the position of through hole 302 of adjacent plain film 30.It is appreciated that being based on Material and technique, the edge of annular flange 305 can also set another annular flange bent with annular flange, however it is not limited to shape Into some small flange 305a of division.The cross sectional shape of annular flange 305 is unrestricted, can be the circle shown in figure, Can be square or other shapes.Used as the small flange 305a of connecting portion, shape is not limited, if not with the position phase of through hole 302 Overlap, you can form reliable against so as to be conducive to connection positioning, and heat transfer with the adjacent surface of plain film 30.

It is appreciated that L-shaped flange 301 is similar with the connecting-piece structure of annular flange 305, all it is a kind of turnup structure, and Include as extension the first flange, and positioned at the first flange end as connecting portion the second flange, simply annular Extension of the flange 305 equivalent to annular.When being stamped and formed out the first flange and the second flange, the second flange is from the end of the first flange Hold and extend to the direction away from through hole 302, i.e., to the turnover of the outside of through hole 302, turn down laterally, for the identical of adjacent plain film 30 Flange is arranged, and can avoid the position of through hole 302.It is appreciated that when the position of through hole 302 of adjacent plain film 30 is staggered arrangement, or When being assembled using the plain film 30 of connectionless part, avoided without turnover, then flange can both be turned down laterally, it is also possible to inwardly Rollover folding, bridge piece 304 is effectively equivalent to connecting portion and inwardly turns on one's side folding.

6-1,6-2 are refer to, Fig. 6-1 puts down in providing the 4th kind of specific embodiment of multi-channel heat exchanger by the utility model The structural representation of piece；Fig. 6-2 is the front view of Fig. 6-1；Fig. 6-3 is the side view of Fig. 6-2.

In the embodiment, plain film 30 is provided with through hole 302, and connector is the hollow swells set along the edge of through hole 302 307, the extension of swells 307 is its peripheral part, and now extension is annular, and the top that swells 307 is heaved is connecting portion, Connecting portion is equivalent to inwardly rollover folding.The top of swells 307 can with the side of adjacent plain film 30 against and be welded and fixed.

Fig. 6-4~6-6 can be combined to understand, Fig. 6-4 is the structural representation of the unit of the fin coordinated with plain film in Fig. 6-1 Figure；Fig. 6-5 is the front view of Fig. 6-4；Fig. 6-6 is the side view of Fig. 6-4；Fig. 6-7 is plain film and plain film in Fig. 6-4 in Fig. 6-1 The schematic diagram of connection.

The one side of plain film 30 is provided with some row's swells 307, and row's swells 307 is a connection piece row, if involvement Fitting is arranged and is distributed along the length direction of plain film 30.On same plain film 30, the swells 307 of adjacent two row it is mutually wrong from, such as Fig. 6- 1st, shown in 6-4, according to 3,2 arranged for interval, Fig. 6-4 quantity is according to 2,3 interval cloth for the quantity of Fig. 6-1 swells 307 from left to right Put.As shown in fig. 6-7, in this way, the two side by side when, each swells 307 can be resisted against in adjacent plain film 30 just in each row Two swells 307 between, so as to realize against welding.Obviously, this kind of implementation method, takes full advantage of the surface of plain film 30 Bonding area, correspondingly increases the contact area of adjacent plain film 30.

And, the plain film 30 being arranged such is easy to process.In Fig. 6-1,6-4, in the connector of plain film 30 row, even rows quantity Equal, odd row quantity is also equal, but odd row and even rows to there is quantity poor.When area is made full use of, the width of plain film 30 Limited, the connector limited amount of formation is spent, odd row or even rows is formed with maximum quantity, then adjacent odd row or even number Row amount necessarily at least differs 1.Certainly, however it is not limited to shown in figure 2,3 or 3,2 have quantity difference arrangement mode, as long as Mutually stagger in the direction of the width.In fact, the arrangement mode that this kind can avoid the position of through hole 302 is also applied for other The connector of structure, the plain film 30 without not setting connector.

It is also possible that the two sides of plain film 30 are respectively provided with swells 307, and as shown in Fig. 6-8~6-12, Fig. 6-8 is two sides The structural representation of the plain film of swells is set；Fig. 6-9 is the side view of Fig. 6-8；Fig. 6-10 is to coordinate with plain film in Fig. 6-8 The structural representation of plain film；Fig. 6-11 is the side view of Fig. 6-10；Fig. 6-12 be Fig. 6-8 in plain film be connected with plain film in Fig. 6-10 Schematic diagram.

When the two sides of plain film 30 are respectively provided with swells 307, interval mode is consistent with above-mentioned one side, but the drum of adjacent row The both sides for playing whole fin (some plain films 30) when portion 307 is divided into the two sides of plain film 30 are equipped with outer connectors, equal energy Enough to be connected with heat exchanger tube 20, that is, the lateral surface (side relative with heat exchanger tube 20) for being arranged in the plain film 30 of both sides can be by outside Connector is connected with heat exchanger tube 20.When one side is set, being not provided with the one side of connector can directly fit heat exchanger tube 20, and can To be welded and fixed, the unilateral connector principle that sets of remaining embodiment is similar to, certainly, be arranged in both sides plain film 30 it is at least a piece of Lateral surface and heat exchanger tube 20 between be also provided with a piece of plain film 30, be particularly located at plain film 30 with outer connectors with Between heat exchanger tube 20, increased plain film 30 is plane towards the side of heat exchanger tube 20, and connection can be set towards the side of plain film 30 Part can not also set connector, so as to realize the plain film 30 being connected with heat exchanger tube 20 by being fitted and connected.

On swells 307, it is not required that the top that the top of swells 307 is formed when being enclosed construction, such as punching press There is crack in portion, if top connecting portion have certain area can against welding.In addition, the arrangement side of swells 307 Formula be also not limited to it is above-mentioned wrong from mode, as long as swells 307 can avoid the through hole 302 being stamped and formed out on adjacent plain film 30 Put, so as to against welding, naturally it is also possible to which setting is not provided with the plain film 30 of connector.

It is appreciated that the connecting-piece structure described in above-described embodiment, including L-type flange 301, with small flange 305a's Annular flange 305, bridge piece 304 etc., can be by being stamped and formed out, and processing is more facilitated.Set purpose, be for it is adjacent Plain film 30 or the formation face of heat exchanger tube 20 contact in order to weld positioning, and L-shaped flange 301, flange 305a and bridge piece 304 Bridge deck structure, additionally it is possible to increase contact area, improves heat transfer effect.Bridge piece 304, swells 307 are equivalent to connecting portion to through hole 302 inner side bendings.

The connector at the edge of through hole 302 is formed at, when being formed by techniques such as punching press or shearings, extension and connection Portion can be with self-assembling formation.Extension can be flat construction, or arcuate structure, or ledge structure, adjacent connecting When plain film 30 or heat exchanger tube 20, extension may also operate as isolating, ensureing the effect of plain film spacing.

No matter use which kind of connecting-piece structure, connector are discussed in the embodiment above on arrangement, Ke Yicheng Row's setting, scattering device etc., those skilled in the art can make other arrangements according to operation principle.Above-mentioned connector is formed at logical The edge of hole 302, it is clear that it is also possible to be not provided with through hole 302, by independent between plain film 30, between plain film 30 and heat exchanger tube 20 The connector of setting be connected can also, " be independently arranged " equivalent to connector, connector is formed not on plain film 30, and flat The connector that piece 30 is separate is connected between plain film 30 by various connected modes, and now connector can also be any realities of this paper Apply the connecting-piece structure described in example.

Except the difference of connector is set, all embodiment general principles are consistent, i.e., multiple plain films 30 are along the thickness of plain film 30 Direction arranges, and the side of fin both sides plain film 30 is towards corresponding heat exchanger tube 20.

7-1~7-4 is refer to, Fig. 7-1 is provided in the 5th kind of specific embodiment of multi-channel heat exchanger by the utility model The structural representation of plain film 30；Fig. 7-2 is the front view of Fig. 7-1；Fig. 7-3 is the right view of Fig. 7-2；Fig. 7-4 is faced upward for Fig. 7's-2 View.

In this embodiment, the mounting means of plain film 30 is consistent with above-described embodiment, and simply the plain film 30 in the embodiment is gone back Shutter 303 is provided with, can a setting shutter 303 on plain film 30, it is also possible to any connection described in above-described embodiment Part is set jointly.As shown in Fig. 7-1, on the length direction of plain film 30, some shutters 303 are provided with, each shutter 303 is along flat The width of piece 30 extends, and the shutter extended along the width of plain film 30 is easy to the discharge of condensed water or defrosting water.Hundred Leaf window 303 and the interval setting of L-shaped flange 301, are independent of each other, and nor affect on flowing down for condensed water or defrosting water.

The setting of shutter 303, can further increase heat transfer effect.Obviously, the bearing of trend of shutter 303 is not limited to Width, those skilled in the art are under the utility model thinking that the present embodiment is provided, it is also possible to make other corresponding changes Shape is designed, width described here, not only including being substantially parallel setting with width, also including being obliquely installed with width.Hundred Leaf window 303 with above-mentioned L-shaped flange 301 or the structure of swells 305 except that can be combined setting, it is also possible to other connectors The plain film 30 of structure or being not provided with the plain film 30 of connector is combined setting.

Fig. 8-1,8-2 are refer to, Fig. 8-1 is provided in the 6th kind of specific embodiment of multi-channel heat exchanger by the utility model The structural representation of fin；Fig. 8-2 is the side view of Fig. 8-1.

In above example, some plain films 30 for showing are separate plain film 30, some along heat exchange in the present embodiment The plain film 30 that the length direction of pipe 20 extends, is actually integral structure, i.e., formed by a piece of fin base material snake type is reciprocally bending If dry plate plain film 30, as shown in Fig. 8-1, the end of plain film 30 is bent to form distance piece, adjacent plain film 30 is kept pre- spacing From.In figure, five plain films 30 of reciprocally bending rear formation are only provided with connector, in figure in the two sides of the two panels plain film 30 of both sides 1 by taking L-shaped flange 30 as an example, center section plain film 30 is without L-shaped flange 301.It is appreciated that L-shaped flange 301 is arranged at above-mentioned reality Apply example description consistent, can all plain films 30 be respectively provided with, it is also possible to part plain film 30 is set, and can be set in the one side of plain film 30 Put, it is also possible to be respectively provided with the two sides of plain film 30.

This kind of reciprocally bending mode for forming multi-disc plain film 30 is equally applicable to the various embodiments described above, and all embodiments In plain film 30 can be formed using aluminium foil.

Reciprocally bending fin globality preferably, is easily installed, it is also possible to as shown in Fig. 5-2, for the flat of all monolithics The embodiment of piece 30, can be bent to form end spacers at least one end of plain film 30, and distance piece can be end bending Side 306, end bending edge 306 include the first bending edge and the second bending edge, the first bending edge be used for isolate adjacent plain film 30 or Plain film 30 and heat exchanger tube 20, the second bending edge can be resisted against the surface of adjacent plain film 30 or heat exchanger tube 20, and be welded and fixed, and increase Heat exchange area is touched in adjunction, is installed more firm.End bending edge 306 can directly be formed by the end one bending of plain film 30 Turnup structure, end bending edge 306 as escribed above, certainly, end bending edge 306 can also split be formed at plain film 30.Between Spacing body is also not limited to turnup structure, for example, can be boss etc..For the fin of reciprocally bending formation, it is clear that its plain film 30 End can also form distance piece, and now all of plain film 30, distance piece is integrally formed by fin base material.Wen Zhong, plain film 30 End is upper and lower ends along its length.

In addition, in Fig. 8-1, it is preferred that the bending edges of reciprocally bending formation correspond to the two ends of plain film 30, so, adjacent Unimpeded heat dissipation channel is formed between plain film 30.

The above is only preferred embodiment of the present utility model, it is noted that for the ordinary skill people of the art For member, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications Also should be regarded as protection domain of the present utility model.

Claims (13)

1. a kind of fin of multi-channel heat exchanger, is arranged between the heat exchanger tube of multi-channel heat exchanger, it is characterised in that the wing Piece includes at least one plain film, and multiple plain films are arranged along the thickness direction of the plain film；It is arranged in the plain film of both sides Lateral surface towards the corresponding heat exchanger tube.

2. the fin of multi-channel heat exchanger according to claim 1, it is characterised in that the plain film is parallel to each other.

3. the fin of multi-channel heat exchanger according to claim 1, it is characterised in that be arranged in the plain film of both sides At least a piece of lateral surface is provided with the outer connectors being connected with the heat exchanger tube.

4. the fin of multi-channel heat exchanger according to claim 3, it is characterised in that the outer connectors are included along institute State the extension of plain film thickness direction extension, and the connecting portion of extension bending relatively, the length of the extension with And the shape of the connecting portion is adapted with the surface of the heat exchanger tube.

5. the fin of the multi-channel heat exchanger according to claim any one of 1-4, it is characterised in that at least a portion is described At least one side of plain film is provided with the connector for connecting the adjacent plain film.

6. the fin of multi-channel heat exchanger according to claim 5, it is characterised in that the two of at least a portion plain film The connector is equipped with individual side.

7. the fin of multi-channel heat exchanger according to claim 5, it is characterised in that the connector is included along described flat The extension that piece thickness direction extends, and the connecting portion that relatively described extension bends, the connecting portion are described flat with adjacent The surface connection of piece.

8. the fin of multi-channel heat exchanger according to claim 7, it is characterised in that the connector on the adjacent plain film Position mutually stagger.

9. a kind of multi-channel heat exchanger, including some heat exchanger tubes and the fin between the adjacent heat exchanger tube, its feature exist In the fin is the fin of the multi-channel heat exchanger described in the claims any one of 1-8, and the fin includes at least one Piece plain film, the plain film is arranged along the orientation of heat exchanger tube, and each plain film extends along the length direction of heat exchanger tube.

10. multi-channel heat exchanger according to claim 9, it is characterised in that be arranged in the plain film of both sides with it is described Heat exchanger tube is adjacent, and the outer connectors being arranged on the lateral surface of the plain film are connected with the heat exchanger tube.

11. multi-channel heat exchangers according to claim 9, it is characterised in that be arranged in the plain film of both sides with it is described Heat exchanger tube is adjacent, and the lateral surface of the lateral surface directly with the heat exchanger tube of the plain film is fitted.

12. multi-channel heat exchangers according to claim 9, it is characterised in that be arranged in the plain film of both sides at least Be additionally provided with a piece of plain film between a piece of lateral surface and the heat exchanger tube, the plain film towards the side of the heat exchanger tube be flat Face.

13. multi-channel heat exchanger according to claim any one of 9-12, it is characterised in that the heat exchanger tube is flat tube, Each plain film is parallel with the flat tube.