CN107449294B - Micro-channel heat exchanger - Google Patents
Micro-channel heat exchanger Download PDFInfo
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- CN107449294B CN107449294B CN201610383064.3A CN201610383064A CN107449294B CN 107449294 B CN107449294 B CN 107449294B CN 201610383064 A CN201610383064 A CN 201610383064A CN 107449294 B CN107449294 B CN 107449294B
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- 239000008139 complexing agent Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 7
- 238000005476 soldering Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
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- 238000005192 partition Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
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- 239000002270 dispersing agent Substances 0.000 description 1
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- -1 good detersive Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000002844 melting Methods 0.000 description 1
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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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of micro-channel heat exchangers, comprising: two headers and multiple flat tubes, two headers are arranged substantially in parallel.Multiple flat tubes are connected between two headers, a heat exchanger channels are limited between two headers per adjacent two flat tubes, at least one heat exchanger channels is equipped with necking part and/or expands neck, wherein, size of the necking part on the extending direction of header is less than the size of the rest part of corresponding heat exchanger channels, expands the size that size of the neck on the extending direction of header is greater than the rest part of corresponding heat exchanger channels.Micro-channel heat exchanger according to the present invention, media flow resistance reduce, and impurity, which is not easy to be deposited in heat exchanger medium spacing, in medium widens place.And the variation of heat exchanger channels width exacerbates media flow turbulent flow, conducive 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 fields, more particularly, to a kind of micro-channel heat exchanger.
Background technique
In recent years, refrigeration industry is rapidly developed, main building block one of of the heat exchanger as refrigeration equipment,
It needs to improve optimization design according to the demand in market and actual use aspect.Micro-channel heat exchanger have heat exchange property it is strong,
The features such as small in size, light-weight, voltage endurance capability is strong, gradually obtains the favor in market.
Micro-channel heat exchanger is mainly made of micro-channel flat, radiating fin and header.At the both ends of micro-channel flat
Equipped with header, for distributing and collecting refrigerant.The wing with venetian blind type is typically provided between adjacent micro-channel flat
Piece, the heat exchange efficiency for enhanced heat exchange device and air side.
When condenser of the micro-channel heat exchanger as household electrical appliances such as refrigerators, due to its use environment may be in kitchen,
There are a large amount of oil smoke impurity in kitchen again, and oil smoke can be sticked on the louvered fin of condenser and accumulate, and condenser windage is caused to become larger,
Heat exchange efficiency reduces.Over time, these refrigerating plant energy consumptions are caused to increase, or even refrigeration is bad.Micro-channel heat exchanger conduct
When the evaporator of heat pump clothes dryer, since the fabric impurity on clothing is easy to accumulate in fin surface, windage will also result in
Problem excessive, heat exchange is bad.
Summary of the invention
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, 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 an embodiment of the present invention, comprising: two headers, described two headers are substantially parallel
Setting；Multiple flat tubes, the multiple flat tube are connected between described two headers, per adjacent two flat tubes and institute
It states and limits a heat exchanger channels between two headers, at least one described heat exchanger channels is equipped with necking part and/or expands neck
Portion, wherein size of the necking part on the extending direction of the header is less than remaining of the corresponding heat exchanger channels
Partial size, the size for expanding neck on the extending direction of the header are greater than its of the corresponding heat exchanger channels
The size of remaining part point.
Micro-channel heat exchanger according to an embodiment of the present invention, by the way that the heat exchanger channels between adjacent flat tube are constructed necking down
Portion and/or expansion neck, the medium for passing through heat exchanger channels is easy to pass through from the position that spacing between flat tube widens, and medium
Flow resistance reduces, and impurity, which is not easy to be deposited in spacing, in medium widens place.In addition, the variation of heat exchanger channels width exacerbates medium
Flow turbulence, conducive to the heat exchange efficiency for improving micro-channel heat exchanger, so that heat exchanger energy consumption can reduce, life longer.
In some embodiments, at least two adjacent flat tubes are bent toward each other with the heat exchange between
The necking part is formed on channel；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.To increase the width variation for expanding neck, further it is conducive 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.In this way, can be by the space of necking part
It concentrates on and expands at neck as far as possible, be more favorable for medium from flowing from neck is expanded, reduce media flow resistance, reduce miscellaneous in medium
Matter pushes away product.
In some embodiments, micro-channel heat exchanger further includes heat exchanger fin, and the heat exchanger fin is located in the heat exchanger channels.
The setting of heat exchanger fin increases the contact area of flat tube tube wall and medium as a result, improves heat exchange efficiency.
Specifically, the heat exchanger fin is equipped with convex closure and/or bending part.The heat exchange of heat exchanger fin and medium can be increased as a result,
Area, and exchange thermal medium and generate flow-disturbing effect, it is conducive to improve heat exchange efficiency.
More specifically, when the heat exchanger channels where the heat exchanger fin be equipped with the necking part when, the convex closure and/or
Bending part deviates the necking part setting.Can avoid convex closure or the setting of bending part as a result, causes necking part width dimensions can not
It reduces.
Further, it is changed described in being equipped with one in addition to the outermost heat exchanger channels, in each heat exchanger channels
Backing, each heat exchanger fin are both connected on two neighbouring flat tubes.
Optionally, at least side is equipped with the convex closure and/or bending part in the opposite sides of each heat exchanger fin.By
This, heat exchanger fin can be densely arranged with flat tube, while the setting of convex closure can increase heat exchange using the space for expanding neck on heat exchanger fin
Efficiency.
In some embodiments, the heat exchanger fin is welded on the neighbouring flat tube.To which heat exchanger fin and neighbour can be improved
The reliability connected between nearly flat tube, and guarantee that heat exchange can be come into full contact between heat exchanger fin and flat tube.
Specifically, the surface of the heat exchanger fin is coated with the complexing agent for soldering.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of micro-channel heat exchanger according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of heat exchanger fin according to an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of micro-channel heat exchanger in accordance with another embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the micro-channel heat exchanger of another embodiment according to the present invention.
Appended drawing reference:
Micro-channel heat exchanger 100, extended surface S,
Header 1, inlet header 11, fluid inlet 110, outlet collection pipe 12, fluid outlet 120, partition 13,
Flat tube 2,
Heat exchanger fin 3, convex closure 31,
Heat exchanger channels 4, necking part 41, expand neck 42,
Adapter tube 200,
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Micro-channel heat exchanger 100 according to an embodiment 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 dryer etc. and need in the equipment of cooling and warming, micro-channel heat exchanger 100 is not yet
It excludes to apply in the equipment of the needs such as water heater heating.
Micro-channel heat exchanger 100 according to an embodiment of the present invention, as shown in Figure 1, comprising: 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 equipped with stream
Body entrance 110 (is shown) in Fig. 4, and outlet collection pipe 12 is equipped with fluid outlet 120 (showing in Fig. 4).Divide on two headers 1
Not She You multiple corresponding apertures, the both ends of each flat tube 2 are connected with the corresponding aperture on two headers 1 respectively.Work as system
For cryogen after the inflow inlet header 11 of fluid inlet 110, refrigerant flow to the tube body along the tube body of inlet header 11
Each tapping, then refrigerant is flow in outlet collection pipe 12 along corresponding multiple flat tubes 2, last outlet collection pipe 12
Interior refrigerant is from 120 outflow heat exchanger of fluid outlet.Refrigerant is logical with heat exchange is flowed through outside flat tube 2 when flowing through multiple flat tubes 2
The medium in road 4 exchanges heat, to achieve the purpose that 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
The shape of face S, extended surface S and the general configuration shape of micro-channel heat exchanger 100 are consistent.In different applications, micro- logical
The extended surface S-shaped shape of road heat exchanger 100 is different.
As shown in figure 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 shape of micro-channel heat exchanger 100 is generally flat.
It also, can will be more as shown in figure 3, to enable micro-channel heat exchanger 100 to be set in lesser space in the example having
A flat tube 2 is bent, and extended surface S-shaped becomes curved surface after bending, and the shape of micro-channel heat exchanger 100 is generally blocky.
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 surface of installation part.Even two headers 1 also flexible deformation, can preferably be connect with installation part
Touching is fixed.
Here, when two headers 1 are warp architecture, and two are set to when general parallel orientation between two headers 1
The length of each flat tube 2 between header 1 adaptively can lengthen or shorten with practical structures matching according to actual needs, respectively
The bending degree of flat tube 2 is also different because of its position.
Example also, the pipe as shown in figure 4, two coaxial arrangements of header 1 or even two headers 1 are integrally formed,
It is integrally formed in pipe and is equipped with partition 13 so that tube body is divided into inlet header 11 and outlet collection pipe 12.It obviously, 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 the relevant technologies, more between inlet header and outlet collection pipe
Flat tube is generally parallel to each other arrangement, is equipped with louvered fin 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
It is remained unchanged on flat tube extending direction.
The structure of this parallel arrangement mode of more flat tubes and louvered fin, so that micro-channel heat exchanger is being applied to have oil
When under the working environment of the impurity such as cigarette, cotton-wool, it is very easy to that impurity is caused 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 equipped with necking part 41 and/or
Expand neck 42.Wherein, size of the necking part 41 on the extending direction of header 1 is less than its remaining part of corresponding heat exchanger channels 4
The size divided expands the ruler that size of the neck 42 on the extending direction of header 1 is greater than the rest part of corresponding heat exchanger channels 4
It is very little.
That is, at least one flat tube 2 is bent towards adjacent flat tube 2 in multiple flat tubes 2, so that the flat tube 2 and phase
Spacing between adjacent flat tube 2 reduces, and 4 width of heat exchanger channels between this two flat tubes 2 reduces, and forms necking part 41.Or it is more
In a 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, 4 width of heat exchanger channels 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 extending direction for being parallel to header 1.
As shown in figure 1, header 1 extends along direction shown in arrow A, and flat tube 2 is substantially along the direction the B extension perpendicular to the direction A, heat exchanger channels
4 width refers to size of the heat exchanger channels 4 on the direction A.
It is understood that if heat exchanger channels 4 have expand neck 42, due to expand neck 42 with respect to the heat exchanger channels 4 its
Width becomes larger at his position, and media flow resistance reduces, and medium is more from flowing from neck 42 is expanded, and impurity is not easy heap in medium
Product is expanding at neck 42.
At least there is a flat tube 2 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, the two sides of the flat tube 2 are equipped with flat
Pipe, the spacing between the flat tube 2 and side flat tube reduces, then the spacing between the flat tube 2 and other side flat tube just becomes larger,
Heat exchanger channels 4 between the flat tube 2 and other side flat tube form an expansion neck 42.If the flat tube 2 is located at multiple flat tubes 2
Outermost, then it is other component that the side of the flat tube 2, which is the flat tube other side,.Spacing between the flat tube 2 and side flat tube
It reduces, then the spacing between the flat tube 2 and other side other component just becomes larger, spacing, which becomes larger, to be located media flow resistance and subtract
Small, medium is more flowed from the spacing place of widening, and impurity is not easy to be deposited at this in medium.
It will also be appreciated that in the structure of micro-channel heat exchanger disclosed in the relevant technologies, since multiple flat tubes are parallel
Setting, the heat exchanger channels of formation are parallel and width is constant, and the medium for flowing through micro-channel heat exchanger in this way 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, length is lengthened after flat tube 2 is bent, single 2 inner refrigerant of flat tube for straight flat tube
Refrigeration stroke is lengthened, and the heat exchange area of heat exchanger increases, and is exchanged heat more abundant.
Micro-channel heat exchanger 100 according to an embodiment of the present invention, by constructing the heat exchanger channels 4 between adjacent flat tube 2
Necking part 41 and/or expansion neck 42, the medium for passing through heat exchanger channels 4 are easy from the position that spacing widens between flat tube 2 out
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, 4 width of heat exchanger channels
Variation exacerbates media flow turbulent flow, conducive to the heat exchange efficiency for improving micro-channel heat exchanger 100, so that heat exchanger energy consumption can drop
Low, life longer.
In some embodiments, at least two adjacent flat tubes 2 are bent toward each other, in the two adjacent flat tubes 2
Between heat exchanger channels 4 on formed necking part 41.
There are also in embodiment, at least two adjacent flat tubes 2 are directed away from mutual direction bending, with this two
It is formed on heat exchanger channels 4 between a adjacent flat tube 2 and expands neck 42.
In embodiment also, at least two adjacent flat tubes 2 are bent toward each other on the heat exchanger channels 4 between
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
Neck 42 is expanded in upper formation.
That is, heat exchanger channels 4, when forming necking part 41 or expanding neck 42, the flat tube 2 of 4 two sides of heat exchanger channels is equal
Occur respective curved, thus increase expand neck 42 width variation, make two flat tubes 2 expand neck 42 at spacing as much as possible
It widens, be further conducive 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, optionally, except most in multiple flat tubes 2
Outside the flat tube 2 in outside, remaining each flat tube 2 is all formed as waveform.
As shown in figure 1, outermost two flat tubes 2 are straight pipe on the direction A, remaining each flat tube 2 is on extended surface S
Repeatedly bending, multiple flat tubes 2 constitute rectangle.
Certainly, 2 structure of flat tube of the invention is without being limited thereto, can also send 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 extending direction 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 shown in figure 1 at a expand neck 42 around b, c, d, e be everywhere necking part 41, in this way, be equivalent to by b, c,
D, the spatial concentration of e everywhere, so that the size for expanding neck 42 at a is larger, is more favorable for medium and flows from a at a, reduces and is situated between
Mass flow dynamic resistance reduces impurity in medium and pushes away product.
In some embodiments, as shown in Figure 1, micro-channel heat exchanger 100 further includes heat exchanger fin 3, heat exchanger fin 3 is located at heat exchange
In channel 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 increases the contact area of flat tube tube wall and medium, improves heat exchange efficiency.
Advantageously, heat exchanger fin 3 is that sheet metal is not easy temperature distortion and becomes fragile so that 3 thermal conductivity of heat exchanger fin is high, easy to connect.
Disclosed in the relevant technologies in heat exchanger, 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 open shutter shape at 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
It is accumulated on leaf window, improves this problem, the preferred laminated structure of heat exchanger fin 3 in the embodiment of the present invention.
For the size for reducing heat exchanger, heat exchanger fin 3 is arranged in parallel with flat tube 2, advantageously, perpendicular to micro-channel heat exchanger
On the direction of 100 extended surface S, the size of heat exchanger fin 3 is equal sized with flat tube 2.On the extending direction of flat tube 2, heat exchange
The both ends of piece 3 are separately connected two headers 1.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 perpendicular with extended surface S.
Specifically, as shown in Fig. 2, heat exchanger fin 3 is equipped 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 generate flow-disturbing effect, be conducive to improve heat exchange efficiency.
Certainly, the structure of heat exchanger fin 3 is without being limited thereto, for example, the fin that can be equipped with small size on heat exchanger fin 3 is (not shown
Out) or heat exchanger fin 3 is equipped with bending part (not shown go out), i.e. the segment section bending of heat exchanger fin 3 forms bending part.Also have
In example, existing convex closure 31 has bending part again on heat exchanger fin 3.
More specifically, convex closure 31 and/or bending part deviate when the heat exchanger channels 4 where heat exchanger fin 3 are equipped with necking part 41
Necking part 41 is arranged.Cause 41 width dimensions of necking part that can not reduce in this way, can avoid the setting of convex closure 31 or bending part.
In some embodiments, heat exchanger fin 3 is welded on neighbouring flat tube 2, so that heat exchanger fin 3 and neighbouring flat tube can be improved
The reliability connected between 2, and guarantee that heat exchange can be come into full contact between heat exchanger fin 3 and flat tube 2.
Optionally, 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 and adjacent flat tube 2 can be fixed by soldering.Header 1 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 brazier.Using soldering connection, small, connector smooth and beautiful appearance is deformed.This entirety
Formula welding, welding efficiency are high.
Specifically, the surface of heat exchanger fin 3 is also coated with the complexing agent for soldering, when header 1, the flat tube 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 3 surface of heat exchanger fin
Between pipe 1, heat exchanger fin 3 is fixedly connected on adjacent flat tube 2 and header 1 after cooling.
Complexing agent is that the multiple additives such as good detersive, dispersing agent and efficient ashless oxidation inhibitor is selected to modulate,
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.There are many types of complexing agent, 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 be coated with 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, being equipped with a heat exchanger fin 3 in each heat exchanger channels 4, each in addition to outermost heat exchanger channels 4
Heat exchanger fin 3 is both connected on two neighbouring flat tubes 2.
When necking part 41 existing in a heat exchanger channels 4, which has, expands neck 42 again, heat exchanger fin 3 is expanding at neck 42 equipped with convex
Packet 31, heat exchanger fin 3 does not set convex closure 31 at necking part 41.When the width for expanding neck 42 is larger, 31 size of convex closure at this compared with
Greatly.When the width for expanding neck 42 is smaller, 31 size of convex closure at this is smaller.In this way, heat exchanger fin 3 can utilize expansion neck 42 as far as possible
Space to exchange heat, and be avoided that necking part 41 generate interference.
Heat exchanger fin 3 in each heat exchanger channels 4 at least can be equipped with convex closure 31 and/or bending on side in opposite sides
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 the setting of convex closure 31 can increase heat exchange efficiency using the space for expanding neck 42 on heat exchanger fin 3.
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 3 surface portion region of heat exchanger fin does raising process, and two sides protrusion can be right
Air generates the effect of flow-disturbing, enhances 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 3 surface of heat exchanger fin to be increased
Add heat exchange area, and use and be bent for the more straight flat tube of flat tube, can increase in identical heat exchanger outer dimension and change
Heat area, the program not only stabilized structure, windage is smaller, and under the operating condition for having the impurity such as oil smoke and dust more, relatively
For louvered fin micro-channel heat exchanger, the risk that heat exchanger performance is influenced because of impurity blocking can be substantially reduced.
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 in each heat exchanger channels 4
3, each heat exchanger fin 3 is both connected on neighbouring flat tube 2.
When necking part 41 existing in a heat exchanger channels 4, which has, expands neck 42 again, heat exchanger fin 3 is expanding at neck 42 equipped with convex
Packet 31, heat exchanger fin 3 does not set convex closure 31 at necking part 41.When the width for expanding neck 42 is larger, 31 size of convex closure at this compared with
Greatly.When the width for expanding neck 42 is smaller, 31 size of convex closure at this is smaller.In this way, heat exchanger fin 3 can utilize expansion neck 42 as far as possible
Space to exchange heat, and be avoided that necking part 41 generate interference.
Two heat exchanger fins 3 in each heat exchanger channels 4 can be equipped with convex closure 31 and/or bending part in side away from each other,
As every two heat exchanger fin 3 can be equipped with convex closure 31 in phase back side.
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 the setting of convex closure 31 can increase heat exchange efficiency using the space for expanding neck 42 on heat exchanger fin 3.
In the description of the present invention, it is to be understood that, term " center ", " length ", " width ", " thickness ", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In description of the invention
In, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
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 combine the embodiment or
Example particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.At this
In specification, schematic expression of the above terms be may not refer to the same embodiment or example.Moreover, description is specific
Feature, structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of micro-channel heat exchanger characterized by comprising
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
It states and limits a heat exchanger channels between two headers, at least one described heat exchanger channels is equipped with necking part and/or expands neck
Portion, wherein size of the necking part on the extending direction of the header is less than remaining of the corresponding heat exchanger channels
Partial size, the size for expanding neck on the extending direction of the header are greater than its of the corresponding heat exchanger channels
The size of remaining part point.
2. micro-channel heat exchanger according to claim 1, which is characterized in that at least two adjacent flat tube directions
It is bent 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, which is characterized in that each heat exchanger channels are equipped with the contracting
Neck and the expansion neck,
On the flat tube extending direction, the necking part and the expansion neck on each heat exchanger channels are arranged alternately,
On the header extending direction, the necking part of multiple heat exchanger channels and the expansion neck are arranged alternately.
4. micro-channel heat exchanger according to any one of claim 1-3, which is characterized in that it further include heat exchanger fin, it is described
Heat exchanger fin is located in the heat exchanger channels.
5. micro-channel heat exchanger according to claim 4, which is characterized in that the heat exchanger fin is equipped with convex closure and/or curved
Folding part.
6. micro-channel heat exchanger according to claim 5, which is characterized in that when the heat exchange where the heat exchanger fin is logical
When road is equipped with the necking part, the convex closure and/or bending part deviate the necking part setting.
7. micro-channel heat exchanger according to claim 5, which is characterized in that in addition to the outermost heat exchanger channels, often
The heat exchanger fin is equipped in a 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, which is characterized in that in the opposite sides of each heat exchanger fin extremely
Few side is equipped with the convex closure and/or bending part.
9. micro-channel heat exchanger according to claim 4, which is characterized in that the heat exchanger fin is welded on neighbouring described flat
Guan Shang.
10. micro-channel heat exchanger according to claim 4, which is characterized in that the surface of the heat exchanger fin is coated with 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 CN107449294A (en) | 2017-12-08 |
| CN107449294B true CN107449294B (en) | 2019-11-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860254B (en) * | 2017-12-23 | 2024-07-19 | 黄国和 | Combined heat exchanger |
| US11656033B2 (en) * | 2020-01-09 | 2023-05-23 | Carrier Corporation | Combined core microchannel heat exchanger |
| 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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| CN201569333U (en) * | 2009-12-17 | 2010-09-01 | 辽宁石油化工大学 | Dual shell side staggered flat tube heat exchanger |
| CN102102957A (en) * | 2009-12-17 | 2011-06-22 | 辽宁石油化工大学 | Oblate staggered pipe for heat exchanger |
| CN103292614A (en) * | 2012-02-22 | 2013-09-11 | 烟台富耐克散热器有限公司 | Automobile radiator |
| 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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|---|---|---|---|---|
| DE102004011608A1 (en) * | 2004-03-18 | 2005-10-13 | Obrist Engineering Gmbh | Heat exchanger of a vehicle air conditioning system |
| CN203349670U (en) * | 2013-07-08 | 2013-12-18 | 郑州大学 | Microchannel heat exchanger |
| CN104465562B (en) * | 2014-12-24 | 2017-11-24 | 西安电子科技大学 | A kind of staggered MCA of chain type |
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|---|---|---|---|---|
| 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 |
| CN201569333U (en) * | 2009-12-17 | 2010-09-01 | 辽宁石油化工大学 | Dual shell side staggered flat tube heat exchanger |
| CN102102957A (en) * | 2009-12-17 | 2011-06-22 | 辽宁石油化工大学 | Oblate staggered pipe for heat exchanger |
| CN103292614A (en) * | 2012-02-22 | 2013-09-11 | 烟台富耐克散热器有限公司 | Automobile radiator |
| 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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|---|---|
| CN107449294A (en) | 2017-12-08 |
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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. |