CN107449294A - Micro-channel heat exchanger - Google Patents
Micro-channel heat exchanger Download PDFInfo
- Publication number
- CN107449294A CN107449294A CN201610383064.3A CN201610383064A CN107449294A CN 107449294 A CN107449294 A CN 107449294A CN 201610383064 A CN201610383064 A CN 201610383064A CN 107449294 A CN107449294 A CN 107449294A
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- Prior art keywords
- heat exchanger
- micro
- channels
- fin
- flat tube
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
Abstract
The invention discloses a kind of micro-channel heat exchanger, including：Two headers and multiple flat tubes, two headers are arranged substantially in parallel.Multiple flat tubes are connected between two headers, it is every to limit a heat exchanger channels between adjacent two flat tubes and two headers, at least one heat exchanger channels is provided with necking part and/or expands neck, wherein, size of the necking part on the bearing of trend of header is less than the size of the remainder of corresponding heat exchanger channels, expands the size that size of the neck on the bearing of trend of header is more than the remainder of corresponding heat exchanger channels.According to the micro-channel heat exchanger of the present invention, media flow resistance reduces, and impurity, which is not easy to be deposited in heat exchanger medium spacing, in medium widens place.And the change of heat exchanger channels width exacerbates media flow turbulent flow, beneficial to the heat exchange efficiency for improving micro-channel heat exchanger, so that heat exchanger energy consumption can reduce, life longer.
Description
Technical field
The present invention relates to cooling and warming technical equipment field, more particularly, to a kind of micro-channel heat exchanger.
Background technology
In recent years, refrigeration industry is developed rapidly, one of the main building block of heat exchanger as refrigeration plant,
Need to be improved optimization design according to the demand in terms of market and actual use.Micro-channel heat exchanger have heat exchange property it is strong,
Small volume, it is in light weight, voltage endurance capability is strong the features such as, gradually obtain the favor in market.
Micro-channel heat exchanger is mainly made up of micro-channel flat, radiating fin and header.At the both ends of micro-channel flat
Provided with header, for distributing and collecting refrigerant.The wing with venetian blind type is typically provided between adjacent micro-channel flat
Piece, for enhanced heat exchange device and the heat exchange efficiency of air side.
During condenser of the micro-channel heat exchanger as household electrical appliances such as refrigerators, due to its use environment be probably in kitchen,
There are a large amount of oil smoke impurity in kitchen again, and oil smoke can be bonded on the louvered fin of condenser and accumulate, and causes condenser windage to become big,
Heat exchange efficiency reduces.In the course of time, these refrigerating plant energy consumptions are caused to raise, or even refrigeration is bad.Micro-channel heat exchanger conduct
During the evaporator of heat pump clothes dryer, because the fabric impurity on clothing is easily accumulated in fin surface, windage will also result in
It is excessive, heat exchange it is bad the problem of.
The content of the invention
The application is intended at least solve one of technical problem present in prior art.Therefore, the present invention is intended to provide one
Kind micro-channel heat exchanger, the micro-channel heat exchanger windage is small and heat exchange efficiency is high.
Micro-channel heat exchanger according to embodiments of the present invention, including：Two headers, described two headers are almost parallel
Set；Multiple flat tubes, the multiple flat tube are connected between described two headers, per adjacent two flat tubes and institute
State and limit a heat exchanger channels between two headers, at least one described heat exchanger channels is provided with necking part and/or expands neck
Portion, wherein, size of the necking part on the bearing of trend of the header is less than remaining of the corresponding heat exchanger channels
Partial size, the size for expanding neck on the bearing of trend of the header are more than its of the corresponding heat exchanger channels
The size of remaining part point.
Micro-channel heat exchanger according to embodiments of the present invention, by the way that the heat exchanger channels between adjacent flat tube are constructed into necking down
Portion and/or expand neck so that flow through the media of heat exchanger channels and easily pass through and medium from the opening position that spacing between flat tube widens
Flow resistance reduces, and impurity, which is not easy to be deposited in spacing, in medium widens place.In addition, the change of heat exchanger channels width exacerbates medium
Flow turbulence, beneficial to the heat exchange efficiency for improving micro-channel heat exchanger, so that heat exchanger energy consumption can reduce, life longer.
In certain embodiments, at least two adjacent flat tubes are bent with the heat exchange between toward each other
The necking part is formed on passage；And/or at least two adjacent flat tubes be directed away from the bending of mutual direction with
Between the heat exchanger channels on form the expansion neck.So as to increase the width variation for expanding neck, further beneficial to medium
Flowing and upset medium turbulent flow.
Specifically, each heat exchanger channels are equipped with the necking part and the expansion neck, in the extension of the flat tube
On direction, the necking part and the expansion neck on each heat exchanger channels are arranged alternately, in the extension of the header
On direction, the necking part of multiple heat exchanger channels and the expansion neck are arranged alternately.So, can be by the space of necking part
Concentrate on and expand at neck as far as possible, be more favorable for medium from flowing at neck is expanded, reduce media flow resistance, reduce miscellaneous in medium
Matter pushes away product.
In certain embodiments, micro-channel heat exchanger also includes heat exchanger fin, and the heat exchanger fin is located in the heat exchanger channels.
Thus, the setting of heat exchanger fin adds the contact area of flat tube tube wall and medium, improves heat exchange efficiency.
Specifically, the heat exchanger fin is provided with convex closure and/or kink.Thus, the heat exchange of heat exchanger fin and medium can be increased
Area, and exchange thermal medium and produce flow-disturbing effect, beneficial to raising heat exchange efficiency.
More specifically, when the heat exchanger channels where the heat exchanger fin are provided with the necking part, the convex closure and/or
Kink deviates the necking part and set.Thus, the setting of convex closure or kink can be avoided to cause necking part width dimensions can not
Reduce.
Further, in addition to the outermost heat exchanger channels, it is equipped with described in one and changes in each heat exchanger channels
Backing, each heat exchanger fin are both connected on two neighbouring flat tubes.
Alternatively, at least side is provided with the convex closure and/or kink in the opposite sides of each heat exchanger fin.By
This, heat exchanger fin can be densely arranged with flat tube, while setting for convex closure can utilize the space for expanding neck on heat exchanger fin, increase heat exchange
Efficiency.
In certain embodiments, the heat exchanger fin is welded on the neighbouring flat tube.So as to improve heat exchanger fin and neighbour
The reliability connected between nearly flat tube, and ensure the abundant contact heat-exchanging of energy between heat exchanger fin and flat tube.
Specifically, the surface of the heat exchanger fin scribbles the complexing agent for soldering.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of micro-channel heat exchanger according to an embodiment of the invention；
Fig. 2 is the structural representation of heat exchanger fin according to embodiments of the present invention；
Fig. 3 is the structural representation of micro-channel heat exchanger in accordance with another embodiment of the present invention；
Fig. 4 is the structural representation according to the micro-channel heat exchanger of another embodiment of the invention.
Reference：
Micro-channel heat exchanger 100, extended surface S,
Header 1, inlet header 11, fluid intake 110, outlet collection pipe 12, fluid issuing 120, dividing plate 13,
Flat tube 2,
Heat exchanger fin 3, convex closure 31,
Heat exchanger channels 4, necking part 41, expand neck 42,
Adapter 200,
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Micro-channel heat exchanger 100 according to embodiments of the present invention, micro-channel heat exchanger 100 are described below with reference to Fig. 1-Fig. 4
It can be applicable in refrigerator, be also applicable in the equipment that dryer etc. needs cooling and warming, micro-channel heat exchanger 100 is not yet
Exclude to apply in the equipment of the needs such as water heater heating.
Micro-channel heat exchanger 100 according to embodiments of the present invention, as shown in figure 1, including：Two headers 1 and multiple flat
Pipe 2, two headers 1 are arranged substantially in parallel, and multiple flat tubes 2 are connected between two headers 1, per adjacent two flat tubes
A heat exchanger channels 4 are limited between 2 and two headers 1.
Wherein, two headers 1 are respectively inlet header 11 and outlet collection pipe 12, and inlet header 11 is provided with stream
Body entrance 110 (shows) that outlet collection pipe 12 is provided with fluid issuing 120 (being shown in Fig. 4) in Fig. 4.Divide on two headers 1
Not She You it is multiple corresponding to perforates, the both ends of each flat tube 2 are connected with the corresponding perforate on two headers 1 respectively.Work as system
For cryogen after fluid intake 110 flows into inlet header 11, body of the refrigerant along inlet header 11 flow to the body
Each tapping, then refrigerant flow to along corresponding multiple flat tubes 2 in outlet collection pipe 12, last outlet collection pipe 12
Interior refrigerant is from the outflow heat exchanger of fluid issuing 120.Refrigerant is logical with flowing through heat exchange outside flat tube 2 when flowing through multiple flat tubes 2
The medium in road 4 exchanges heat, to reach the purpose of refrigeration or heating.
For convenience of description, the face of the central axis composition of multiple flat tubes 2 is referred to as the extension of micro-channel heat exchanger 100 herein
Face S, extended surface S shape are consistent with the general configuration shape of micro-channel heat exchanger 100.It is micro- logical in different application scenarios
The extended surface S-shaped shape of road heat exchanger 100 is different.
In Fig. 1, the central axis of multiple flat tubes 2 is in the same plane, the extended surface S-shaped of micro-channel heat exchanger 100
As plane, the profile generally flat of micro-channel heat exchanger 100.
Also can will be more as shown in figure 3, to enable micro-channel heat exchanger 100 to be arranged in less space in the example having
Individual flat tube 2 is bent, and extended surface S-shaped turns into curved surface after bending, and the profile of micro-channel heat exchanger 100 is generally block.
In some examples also, more to adapt to installation environment, each flat tube 2 can be in also bending, so that at least one
Part flat tube 2 is bonded with the wall of installed part.Even two headers 1 also flexible deformation, that preferably can be connect with installed part
Touch and fix.
Here, when two headers 1 are warp architecture, and two are arranged at during general parallel orientation between two headers 1
The length of each flat tube 2 between header 1 adaptively can be lengthened or shortened with practical structures matching according to being actually needed, respectively
The degree of crook of flat tube 2 is also different because of its position.
Example also, as shown in figure 4, two headers 1 are coaxially disposed, or even two headers 1 are formed in one pipe,
It is integrally formed in pipe and is provided with dividing plate 13 so that body is divided into inlet header 11 and outlet collection pipe 12.Obviously, it is connection import
Header 11 and outlet collection pipe 12, multiple flat tubes 2 are required to bending.Each flat tube 2 can form U-shaped structure, such extended surface S
Be formed as general U-shape.Each flat tube 2 can also form v-shaped structure, and such extended surface S also forms substantially V-shaped.Certainly, each flat tube
2, which go back bendable, is converted into other structures.
In the structure of micro-channel heat exchanger disclosed in correlation technique, more between inlet header and outlet collection pipe
Flat tube is generally parallel to each other arrangement, and louvered fin is provided between adjacent two flat tubes.Even if the extended surface of heat exchanger needs to bend,
More flat tubes are bent in the corresponding position that extended surface is bent, and are still parallel to each other between more flat tubes, the spacing between adjacent flat tube
Keep constant on flat tube bearing of trend.
The structure of this parallel arrangement mode of more flat tubes and louvered fin so that micro-channel heat exchanger is applied to there is oil
When under the working environment of the impurity such as cigarette, cotton-wool, it is very easy to cause impurity to be accumulated on flat tube and fin and causes to block.
And in the embodiment of the present invention, as shown in Figure 1 and Figure 4, at least one heat exchanger channels 4 be provided with necking part 41 and/or
Expand neck 42.Wherein, size of the necking part 41 on the bearing of trend of header 1 is less than its remaining part of corresponding heat exchanger channels 4
The size divided, expand the chi that size of the neck 42 on the bearing of trend of header 1 is more than the remainder of corresponding heat exchanger channels 4
It is very little.
That is, in multiple flat tubes 2, at least one flat tube 2 is bent towards adjacent flat tube 2 so that the flat tube 2 and phase
Spacing between adjacent flat tube 2 reduces, and the width of heat exchanger channels 4 between this two flat tubes 2 reduces, and forms necking part 41.It is or more
In individual flat tube 2, at least one flat tube 2 is directed away from the direction bending of adjacent flat tube 2 so that the flat tube 2 and adjacent flat tube 2 it
Between spacing widen, the width of heat exchanger channels 4 between this two flat tubes 2 increases, and is formed and expands neck 42.Or in multiple flat tubes 2,
At least one flat tube 2 is bent towards adjacent flat tube 2, and at least one flat tube 2 be directed away from adjacent flat tube 2 direction it is curved
It is bent.
Here, the width of heat exchanger channels 4 refers to size of the heat exchanger channels 4 on the bearing of trend parallel to header 1.
In Fig. 1, the extension of direction shown in header 1 along arrow A, flat tube 2 is substantially along perpendicular to the extension of the B directions in A directions, heat exchanger channels
4 width refers to size of the heat exchanger channels 4 on A directions.
If it is understood that heat exchanger channels 4 have expand neck 42, due to expand neck 42 with respect to the heat exchanger channels 4 its
His opening position width becomes big, and media flow resistance reduces, and medium more flows at expansion neck 42, and impurity is not easy heap in medium
Product is expanding at neck 42.
A flat tube 2 at least be present towards phase if heat exchanger channels 4 have necking part 41, i.e., on micro-channel heat exchanger 100
Adjacent flat tube 2 is bent.If the flat tube 2 is located at the middle position of multiple flat tubes 2, then the both sides of the flat tube 2 are equipped with flat
Pipe, the spacing between the flat tube 2 and side flat tube reduce, then and the spacing between the flat tube 2 and opposite side flat tube just becomes big,
Heat exchanger channels 4 between the flat tube 2 and opposite side flat tube form an expansion neck 42.If the flat tube 2 is located at multiple flat tubes 2
Outermost, then the side of the flat tube 2 is that flat tube opposite side is miscellaneous part.Spacing between the flat tube 2 and side flat tube
Reduce, then the spacing between the flat tube 2 and opposite side miscellaneous part just becomes big, and spacing becomes general goal media flow resistance and subtracted
Small, medium more flows from the spacing place of widening, and impurity is not easy accumulation in this place in medium.
It will also be appreciated that in the structure of micro-channel heat exchanger disclosed in correlation technique, because multiple flat tubes are parallel
Set, the heat exchanger channels of formation are parallel and width is constant, and the medium for so flowing through micro-channel heat exchanger is more likely to concurrent flow
State flow through multiple heat exchanger channels.
And in the embodiment of the present invention, by the way that heat exchanger channels 4 to be configured to not wide structure, upset the concurrent flow of medium
Dynamic state, medium are more prone to flow to the state of turbulent flow, so, changing between the refrigerant in medium and flat tube 2
The thermal efficiency can be improved.
In addition, for straight flat tube, length is lengthened after flat tube 2 is bent, the single inner refrigerant of flat tube 2
Refrigeration stroke is lengthened, the heat exchange area increase of heat exchanger, and heat exchange is more abundant.
Micro-channel heat exchanger 100 according to embodiments of the present invention, by the way that the heat exchanger channels 4 between adjacent flat tube 2 are constructed
Go out necking part 41 and/or expand neck 42 so that flow through the medium of heat exchanger channels 4 easily from the position that spacing widens between flat tube 2
Place passes through, and media flow resistance reduces, and impurity, which is not easy to be deposited in spacing, in medium widens place.In addition, the width of heat exchanger channels 4
Change exacerbates media flow turbulent flow, beneficial to the heat exchange efficiency for improving micro-channel heat exchanger 100, so as to which heat exchanger energy consumption can drop
Low, life longer.
In certain embodiments, at least two adjacent flat tubes 2 are bent toward each other, with the two adjacent flat tubes 2
Between heat exchanger channels 4 on formed necking part 41.
Also have in some embodiments, at least two adjacent flat tubes 2 are directed away from the bending of mutual direction, with this two
Formed on heat exchanger channels 4 between individual adjacent flat tube 2 and expand neck 42.
In embodiment also, at least two adjacent flat tubes 2 are bent with the heat exchanger channels 4 between toward each other
Necking part 41 is formed, and at least two adjacent flat tubes 2 are directed away from mutual direction bending with the heat exchanger channels 4 between
Upper formed expands neck 42.
That is, heat exchanger channels 4, when forming necking part 41 or expanding neck 42, the flat tube 2 of the both sides of heat exchanger channels 4 is equal
Generation respective curved, so as to increase expand neck 42 width variation, make two flat tubes 2 expand neck 42 at spacing as much as possible
Widen, further beneficial to media flow and upset medium turbulent flow.
In certain embodiments, in multiple heat exchanger channels 4 between multiple flat tubes 2, at least one heat exchanger channels 4
Upper existing necking part 41 has again expands neck 42.
Specifically, as shown in figure 1, in multiple flat tubes 2 in addition to outermost flat tube 2, remaining each flat tube 2 bends
So that neighbouring heat exchanger channels 4 have necking part 41 or expand neck 42.
More specifically, at least one flat tube 2 is formed as waveform in multiple flat tubes 2, alternatively, except most in multiple flat tubes 2
Outside the flat tube 2 in outside, remaining each flat tube 2 is all formed as waveform.
In Fig. 1, outermost two flat tubes 2 are straight pipe on A directions, and remaining each flat tube 2 is on extended surface S
Repeatedly bending, multiple flat tubes 2 form rectangle.
Certainly, the structure not limited to this of flat tube 2 of the invention, can also be sent out at interval of the flat tube 2 of N number of flat tube 2 in multiple flat tubes 2
Raw bending, N are the integer more than or equal to 1.
In a specific example, as shown in figure 1, each heat exchanger channels 4 are equipped with necking part 41 and expand neck 42, flat
On the bearing of trend of pipe 2, necking part 41 and expansion neck 42 on each heat exchanger channels 4 are arranged alternately；In the extension side of header 1
Upwards, the necking part 41 of multiple heat exchanger channels 4 and expansion neck 42 are arranged alternately.
As in Fig. 1 at a expand neck 42 around b, c, d, e be necking part 41 everywhere, in this way, equivalent to by b, c,
D, the spatial concentrations of e everywhere are at a so that the size of expansion neck 42 is larger at a, is more favorable for medium and is flowed at a, reduces and is situated between
Mass flow dynamic resistance, reduce impurity in medium and push away product.
In certain embodiments, as shown in figure 1, micro-channel heat exchanger 100 also includes heat exchanger fin 3, heat exchanger fin 3 is located at heat exchange
In passage 4.Wherein, heat exchanger fin 3 is connected with adjacent flat tube 2, and heat exchanger fin 3 is equivalent to the extension of the tube wall of adjacent flat tube 2, heat exchange
The setting of piece 3 adds the contact area of flat tube tube wall and medium, improves heat exchange efficiency.
Advantageously, heat exchanger fin 3 is sheet metal, so as to which the thermal conductivity of heat exchanger fin 3 is high, is not easy temperature distortion and becomes fragile, easy to connect.
In heat exchanger disclosed in correlation technique, what is arranged between the flat tube of micro-channel heat exchanger is louvered fin.Windowing
Fin is to be converted into waveform by equipment by a very thin aluminium flake, and opens shutter shape into used in blinds is in increase on surface
To the flow-disturbing of air, amplified medium side heat exchange efficiency.But the miscellaneous impurity of crushed grain (such as oil smoke, cotton-wool) is most easy to stick hundred in medium
Accumulated on leaf window, be this problem of improvement, 3 preferred laminated structure of heat exchanger fin in the embodiment of the present invention.
To reduce the size of heat exchanger, heat exchanger fin 3 be arranged in parallel with flat tube 2, advantageously, perpendicular to micro-channel heat exchanger
On 100 extended surface S direction, the size of heat exchanger fin 3 is equal sized with flat tube 2.On the bearing of trend of flat tube 2, heat exchange
The both ends of piece 3 connect two headers 1 respectively.In the example of fig. 1, the extended surface S of micro-channel heat exchanger 100 is plane, is changed
Backing 3 is formed as the surface plate vertical with extended surface S-phase.
Specifically, as shown in Fig. 2 heat exchanger fin 3 is provided with convex closure 31, in fig. 2, thickness of the heat exchanger fin 3 at convex closure 31
Constant, the both side surface of heat exchanger fin 3 is heaved to same direction to form convex closure 31.The setting of convex closure 31 can increase heat exchanger fin 3
With the heat exchange area of medium, and exchange thermal medium produce flow-disturbing effect, beneficial to improve heat exchange efficiency.
Certainly, the structure not limited to this of heat exchanger fin 3, for example, the fin that small size can be provided with heat exchanger fin 3 is (not shown
Go out), or heat exchanger fin 3 is provided with kink (not shown), i.e. the segment section bending of heat exchanger fin 3 forms kink.Also have
In example, existing convex closure 31 has kink again on heat exchanger fin 3.
More specifically, when the heat exchanger channels 4 where heat exchanger fin 3 are provided with necking part 41, convex closure 31 and/or kink deviate
Necking part 41 is set.So, the setting of convex closure 31 or kink can be avoided to cause the width dimensions of necking part 41 not reduce.
In certain embodiments, heat exchanger fin 3 is welded on neighbouring flat tube 2, so as to improve heat exchanger fin 3 and neighbouring flat tube
The reliability connected between 2, and ensure the abundant contact heat-exchanging of energy between heat exchanger fin 3 and flat tube 2.
Alternatively, heat exchanger fin 3 is aluminium flake or aluminum alloy sheet, and the surface of heat exchanger fin 3 and flat tube 2 is equipped with welding coating.
In the above-described embodiments, heat exchanger fin 3 can be fixed with adjacent flat tube 2 by soldering.The header 1 treating to assemble,
Flat tube 2 and heat exchanger fin 3 are put into soldering oven, and the welding coating on the surface of heat exchanger fin 3 and flat tube 2 melts under high temperature action, pricker
Heat exchanger fin 3 and neighbouring flat tube 2 are welded and fixed by brazier.Using soldering connection, small, joint smooth and beautiful appearance is deformed.This entirety
Formula is welded, and welding efficiency is high.
Specifically, the surface of heat exchanger fin 3 is also coated with the complexing agent for soldering, when header 1, the flat tube treating to assemble
2 and heat exchanger fin 3 be put into soldering oven, be filled in heat exchanger fin 3 and adjacent flat tube 2, afflux after the melting of the complexing agent on the surface of heat exchanger fin 3
Between pipe 1, heat exchanger fin 3 is fixedly connected on adjacent flat tube 2 and header 1 after cooling.
Complexing agent is formed from the modulation of the multiple additives such as high-quality detersive, dispersant and efficient ashless oxidation inhibitor,
Heat exchanger fin 3 has good high temperature detergency, low temperature dispersity after being coated with complexing agent, also with excellent anti-oxidant, wear-resistant
The performances such as damage property.The type of complexing agent have it is a variety of, in the embodiment of the present invention, according to actual production welding or other fixed forms
Demand, the surface of heat exchanger fin 3 can scribble the complexing agent of respective type.
The structure of the micro-channel heat exchanger 100 of one specific embodiment is described referring to Fig. 1.
As shown in figure 1, in addition to outermost heat exchanger channels 4, a heat exchanger fin 3 is equipped with each heat exchanger channels 4, each
Heat exchanger fin 3 is both connected on two neighbouring flat tubes 2.
When existing necking part 41 has expansion neck 42 in a heat exchanger channels 4 again, heat exchanger fin 3 is expanding at neck 42 provided with convex
Bag 31, heat exchanger fin 3 does not set convex closure 31 at necking part 41.When the width for expanding neck 42 is larger, the size of convex closure 31 at this compared with
Greatly.When the width for expanding neck 42 is smaller, the size of convex closure 31 at this is smaller.So, heat exchanger fin 3 can utilize as far as possible expands neck 42
Space to exchange heat, and can avoid to necking part 41 produce interference.
Heat exchanger fin 3 in each heat exchanger channels 4 can be provided with convex closure 31 and/or bending in opposite sides at least on side
Portion, in Fig. 1 and Fig. 2, each heat exchanger fin 3 is equipped with convex closure 31 in opposite sides.
So, the spacing of two heat exchanger fins 3 in each heat exchanger channels 4 can be reduced so that heat exchanger fin 3 and flat tube 2
Can be densely arranged, while setting for convex closure 31 can utilize the space for expanding neck 42 on heat exchanger fin 3, increase heat exchange efficiency.
In the example, heat transferring medium is air, on the direction perpendicular to A and perpendicular to B, the size of heat exchanger fin 3 with it is flat
Pipe 2 it is equal sized, heat exchanger fin 3 is flake aluminum, and raising PROCESS FOR TREATMENT is done in the surface portion region of heat exchanger fin 3, and two sides projection can be right
Air produces the effect of flow-disturbing, strengthens heat exchange efficiency.
Fin and air heat-exchange are replaced with metal heat-exchange piece 3, raising or the part of bending processing are made in the surface of heat exchanger fin 3 to be increased
Add heat exchange area, and for the use bending more straight flat tube of flat tube, can increase in the case of identical heat exchanger appearance and size and change
Hot area, the program not only stabilized structure, windage is smaller, and in the case where there is the more operating mode of the impurity such as oil smoke and dust, relatively
For louvered fin micro-channel heat exchanger, can substantially reduce influences the risk of heat exchanger performance because impurity blocks.
The structure of the micro-channel heat exchanger 100 of another specific embodiment is described below.
Specifically, in addition to outermost heat exchanger channels 4, two heat exchanger fins spaced apart are equipped with each heat exchanger channels 4
3, each heat exchanger fin 3 is both connected on neighbouring flat tube 2.
When existing necking part 41 has expansion neck 42 in a heat exchanger channels 4 again, heat exchanger fin 3 is expanding at neck 42 provided with convex
Bag 31, heat exchanger fin 3 does not set convex closure 31 at necking part 41.When the width for expanding neck 42 is larger, the size of convex closure 31 at this compared with
Greatly.When the width for expanding neck 42 is smaller, the size of convex closure 31 at this is smaller.So, heat exchanger fin 3 can utilize as far as possible expands neck 42
Space to exchange heat, and can avoid to necking part 41 produce interference.
Two heat exchanger fins 3 in each heat exchanger channels 4 can be provided with convex closure 31 and/or kink in side away from each other,
As each two heat exchanger fin 3 can be provided with convex closure 31 in phase dorsal part.
So, the spacing of two heat exchanger fins 3 in each heat exchanger channels 4 can be reduced so that heat exchanger fin 3 and flat tube 2
Can be densely arranged, while setting for convex closure 31 can utilize the space for expanding neck 42 on heat exchanger fin 3, increase heat exchange efficiency.
In the description of the invention, it is to be understood that term " " center ", " length ", " width ", " thickness ", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom ", " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In description of the invention
In, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect,
It can be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be the company of two element internals
Logical or two elements interaction relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
In the description of this specification, the description of reference term " embodiment ", " example " etc. mean to combine the embodiment or
Specific features, structure, material or the feature of example description are contained at least one embodiment or example of the present invention.At this
In specification, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, description is specific
Feature, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
- A kind of 1. micro-channel heat exchanger, it is characterised in that including：Two headers, described two headers are arranged substantially in parallel；Multiple flat tubes, the multiple flat tube are connected between described two headers, per adjacent two flat tubes and institute State and limit a heat exchanger channels between two headers, at least one described heat exchanger channels is provided with necking part and/or expands neck Portion, wherein, size of the necking part on the bearing of trend of the header is less than remaining of the corresponding heat exchanger channels Partial size, the size for expanding neck on the bearing of trend of the header are more than its of the corresponding heat exchanger channels The size of remaining part point.
- 2. micro-channel heat exchanger according to claim 1, it is characterised in that at least two adjacent flat tube directions Bend each other to form the necking part on the heat exchanger channels between；And/or at least two adjacent flat tubes Mutual direction bending is directed away to form the expansion neck on the heat exchanger channels between.
- 3. micro-channel heat exchanger according to claim 1, it is characterised in that each heat exchanger channels are equipped with the contracting Neck and the expansion neck,On the flat tube bearing of trend, the necking part and the expansion neck on each heat exchanger channels are arranged alternately,On the header bearing of trend, the necking part of multiple heat exchanger channels and the expansion neck are arranged alternately.
- 4. according to the micro-channel heat exchanger any one of claim 1-3, it is characterised in that described also including heat exchanger fin Heat exchanger fin is located in the heat exchanger channels.
- 5. micro-channel heat exchanger according to claim 4, it is characterised in that the heat exchanger fin is provided with convex closure and/or curved Folding part.
- 6. micro-channel heat exchanger according to claim 5, it is characterised in that when the heat exchange where the heat exchanger fin is led to When road is provided with the necking part, the convex closure and/or kink deviate the necking part and set.
- 7. micro-channel heat exchanger according to claim 5, it is characterised in that in addition to the outermost heat exchanger channels, often A heat exchanger fin is equipped with the individual heat exchanger channels, each heat exchanger fin is both connected to two neighbouring flat tubes On.
- 8. micro-channel heat exchanger according to claim 7, it is characterised in that in the opposite sides of each heat exchanger fin extremely Few side is provided with the convex closure and/or kink.
- 9. micro-channel heat exchanger according to claim 4, it is characterised in that the heat exchanger fin is welded on neighbouring described flat Guan Shang.
- 10. micro-channel heat exchanger according to claim 4, it is characterised in that the surface of the heat exchanger fin is scribbled for pricker The complexing agent of weldering.
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| CN201610383064.3A CN107449294B (en) | 2016-05-31 | 2016-05-31 | Micro-channel heat exchanger |
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| CN201610383064.3A CN107449294B (en) | 2016-05-31 | 2016-05-31 | Micro-channel heat exchanger |
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| CN107449294A true CN107449294A (en) | 2017-12-08 |
| CN107449294B CN107449294B (en) | 2019-11-08 |
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| CN201610383064.3A Active CN107449294B (en) | 2016-05-31 | 2016-05-31 | Micro-channel heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696334A (en) * | 2021-01-04 | 2021-04-23 | 南宁市安和机械设备有限公司 | Air compressor radiator made of dislocation dotting pipe |
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| CN203349670U (en) * | 2013-07-08 | 2013-12-18 | 郑州大学 | Microchannel heat exchanger |
| CN104465562A (en) * | 2014-12-24 | 2015-03-25 | 西安电子科技大学 | Chain type staggered micro-channel structure |
| CN105222635A (en) * | 2014-06-25 | 2016-01-06 | 杭州三花研究院有限公司 | Fin and there is the heat exchanger of this fin |
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| US20070023172A1 (en) * | 2004-03-18 | 2007-02-01 | Frank Obrist | Heat exchanger for a motor vehicle air conditioning system |
| CN201072267Y (en) * | 2007-07-20 | 2008-06-11 | 上海双桦汽车零部件股份有限公司 | Cocurrent flow condenser |
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| CN112696334A (en) * | 2021-01-04 | 2021-04-23 | 南宁市安和机械设备有限公司 | Air compressor radiator made of dislocation dotting pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107449294B (en) | 2019-11-08 |
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Effective date of registration: 20191030 Address after: 310018 289-1, No.12 Baiyang street, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Sanhua Micro Channel Heat Exchanger Inc. Address before: 310026 No. 12, No. 289-2, Hangzhou Economic Development Zone, Hangzhou, Zhejiang Patentee before: HANGZHOU SANHUAJIA ELECTROTHERMAL MANAGEMENT SYSTEM CO., LTD. |