CN106322840A - Micro-channel heat exchanger - Google Patents
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- CN106322840A CN106322840A CN201510379769.3A CN201510379769A CN106322840A CN 106322840 A CN106322840 A CN 106322840A CN 201510379769 A CN201510379769 A CN 201510379769A CN 106322840 A CN106322840 A CN 106322840A
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Abstract
A micro-channel heat exchanger comprises at least one layer of structure that is the first layer; the first layer comprises a first flow collecting pipe, a second flow collecting pipe, a plurality of flat pipes and fins arranged between the adjacent flat pipes; a hole portion roughly closed or not closed is arranged in the middle of the micro-channel heat exchanger, and the hole portion is not provided with the flat pipes and the fins; each flat pipe is provided with two opposite surfaces with the large area, each flat pipe comprises a main segment and straight segments at the two ends of the main segment, each main segment comprises at least one non-linear segment, the non-linear segments are bent towards the interior of one side of one bearing surface in the bending direction, and the straight segments at the two ends of the flat pipes extend towards the outer side. The heat exchanger has the beneficial effects that when the heat exchanger is used in cooperation with an axial flow type draught fan, a space reserved in the middle is arranged in a manner of corresponding to a base of the draught fan, the blind area of the wind field is avoided, the heat exchange area of the heat exchanger can be well utilized, materials of the heat exchanger are saved, meanwhile, the flow collecting pipes are relatively short, materials are further saved, the cost is reduced, and the heat exchanger is suitable for being applied and popularized.
Description
Technical field
The present invention relates to technical field of heat exchange, be specifically related to a kind of micro-channel heat exchanger.
Background technology
Micro-channel heat exchanger has obtained applying widely at refrigerating field.Micro-channel heat exchanger mainly includes
Header, flat tube and fin, wherein header flows into each flat tube for being guided by heat transferring medium, flat
Pipe is mainly used in circulation and the heat exchange of heat transferring medium, and fin is connected by welding and flat tube, passes through gas
Flowing realizes the heat exchange function of the heat transferring medium in flat tube.
Summary of the invention
Micro-channel heat exchanger blower fan to be coordinated drives air current flow to carry out heat exchange, gas
Flowing mainly driven by axial fan, blower fan drive gas pass through from the gas side of micro-channel heat exchanger,
Please join shown in Fig. 1, blower fan 10 is oppositely arranged with heat exchanger, and Fig. 2 is Simulation of Wind Field figure during operating,
It can be seen that there is the blind area of wind field, the centre of heat exchanger in heat exchanger section corresponding to blower fan pedestal
Part, the wind speed of i.e. corresponding blower fan base part is less, and the heat exchange area of heat exchanger can not be effectively sharp
With.
The present invention, precisely in order to solve the problems referred to above and propose, uses following technical side for this present invention
Case:
A kind of micro-channel heat exchanger, including:
A kind of micro-channel heat exchanger, including at least one of which structure, i.e. ground floor, ground floor includes the
One header, the second header, multiple flat tube and be located at the fin between adjacent flat tube；Described micro-logical
The middle part of road heat exchanger includes that one is substantially closed or nonocclusive hole portion, and described hole portion is not provided with flat
Pipe and fin；Each described flat tube has two apparent surfaces that area is bigger, and each flat tube includes main body
Section and the flat segments at two ends thereof, main paragraph includes at least one non-straight line segment, the bending of this non-straight line segment
Direction is that the flat segments at flat tube two ends is the most outside towards one of them load-bearing surface side inner bending described
Side extends, and the two is in the same plane, and bearing of trend is substantially opposite；Described fin both sides have
Relative peak portion, described fin is respectively arranged between adjacent described flat tube, and fin extends in the same direction with flat tube,
Two surfaces that two peak portions of described fin are relative with adjacent flat tube respectively are connected；Each flat tube is respectively provided with
At least one inner passage, described inner passage extends along the length direction of described flat tube；Ground floor
One end of flat tube connects described first header, and the other end connects described second header；Described first
Header is provided with first interface；Described first header and the second header lay respectively at described heat exchange
The both sides of device.
Described flat tube includes that flat segments and the main part at two ends, described non-straight line segment are arranged on described main body
Portion, described non-straight line segment is bending section or segmental arc, two surfaces of the adjacent described flat tube of main part it
Between be provided with described fin；Two flat tubes that the peak portion at the two ends of same fin connects, along described length
Spacing between its main part of the diverse location in direction is roughly equal.
Described header is provided with the perforate for grafting flat tube, at least of described flat tube flat segments
Divide and insert connection in described perforate；Flat segments length s of described flat tube either end >=(1/3～1/2) d+3,
Wherein d is header external diameter, and unit is millimeter；It is deep that described flat tube flat segments insertion open interior is divided
Degree h≤(1/3～1/2) d, and h ＞ t, wherein t is header wall thickness.
The substantially ring-like structure of described micro-channel heat exchanger or include circulus, described first header
It is arranged substantially in parallel with the second header, described first header and the hole coordinated of flat tube and described the
The substantially vertical setting of axis of one header, the hole coordinated of described second header and flat tube is with described
The substantially vertical setting of axis of the second header.
From described micro-channel heat exchanger center outwards, total flow area of the inner passage of described flat tube by
Step increases, and is located relatively at total flow area of inner passage of the flat tube of outside more than or equal to being located relatively at
Total flow area of the inner passage of internal flat tube.
The density of different described fins, i.e. fin peak number in unit length, from the center of heat exchanger
Become larger to the periphery.
The inner side being positioned at described heat exchanger inner side flat tube is provided with the side plate of extension parallel with it and is located at
Therebetween fin；The outside being positioned at described heat exchanger outermost flat tube is provided with extension parallel with it
Outer side plate and be located at fin therebetween；The described integrally formed circular inside diameters of interior side plate is more than afflux
The twice of pipe external diameter；The radial distance of described inside and outside side plate and the same length of header.
The flow area of different flat tubes is roughly the same with its length ratio.
The density of different described fins, i.e. fin peak number in unit length, from the center of heat exchanger
Become larger to the periphery.
Described first header of described ground floor has a cavity that at least two is isolated mutually, and i.e. first
Chamber and the second chamber；The flat tube of ground floor at least includes two groups, the i.e. first pipe group and the second pipe group, first
One end of pipe group connects described first chamber, and the other end connects described second header inner chamber, the second pipe group
One end connect described second chamber, the other end connect described second header inner chamber；Described first chamber and
In described second chamber, at least one of which has for external first interface.
Described first header and the second header are arranged substantially in parallel, and described flat tube includes Part I
With Part II, Part I forms described hole portion mutually on the contrary with the overbending direction of Part II；Relatively
The length of two flat segments of the flat tube arranged inwardly is more than the flat segments of the most outer flat tube, described
The bearing of trend of two ends flat segments is contrary.
The annular of present invention heat exchanger or circulus design, with axial fan with the use of time,
Middle part slot milling setting corresponding with the pedestal of blower fan, avoids the blind area of wind field, changing of heat exchanger
Hot side is long-pending can be good at being utilized, and saves the material of heat exchanger, and header also can be relatively simultaneously
Short, save material further, reduce cost.
Accompanying drawing explanation
Illustrating with micro-channel heat exchanger for example below, accompanying drawing has only been by signal, and can not
Regard as the restriction to inventive embodiments.
Fig. 1 is Rectangular Microchannel heat exchanger known today to be set with axial fan in systems relative
Put schematic diagram.
Fig. 2 is the axial fan Simulation of Wind Field schematic diagram at Rectangular Microchannel heat exchanger surface.
Fig. 3 is the structural representation of a kind of embodiment of micro-channel heat exchanger.
Fig. 4 is the structural representation of the first header of micro-channel heat exchanger shown in Fig. 3.
Fig. 5 is the structural representation of the second header of micro-channel heat exchanger shown in Fig. 3.
Fig. 6 is the structural representation of the flat tube of micro-channel heat exchanger shown in Fig. 3.
Fig. 7 is the structural representation in the middle of micro-channel heat exchanger shown in Fig. 3 after two relative flat tubes filling fins
Figure.
Fig. 8 is the schematic front view of micro-channel heat exchanger shown in Fig. 3.
Fig. 9 is three kinds of designs that flat tube inner passage flow area is incremented by.
Figure 10 is the another embodiment schematic diagram of micro-channel heat exchanger.
Figure 11 is first and second layer of second header and connector in micro-channel heat exchanger shown in Figure 10
Exploded perspective view.
Figure 12 is the another embodiment schematic diagram of micro-channel heat exchanger.
Figure 13 is the another embodiment schematic diagram of micro-channel heat exchanger.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are specifically described, refer to Fig. 3-Figure 13.
As it is shown on figure 3, micro-channel heat exchanger includes first header the 20, second header 30, some
Flat tube 40, some fins 50, the central region of micro-channel heat exchanger is not provided with flat tube and fin, and
Form the hole portion 63 of substantially closed loop or a non-closed loop.The first afflux is inserted at the two ends of flat tube 40 respectively
Hole that pipe 20 is corresponding with the second header 30 by welding and first header the 20, second header
30 fix, and the first header 20 be arranged in parallel with the second header 30, and the two ends of flat tube 40 are respectively
Connecting the first header 20 and the second header 30, fin 50 is arranged between adjacent flat tube 40,
Additionally heat exchanger is additionally provided with the side plate 61,62 being positioned at inside and outside both sides, is also equipped with between flat tube and side plate
Fin.
As shown in Figure 4, the first header 20 includes the first header body 21 and the first of two ends
End cap the 22, first stub (tube) the 23, first adapter 24, the first adapter 24 is by the first stub (tube) 23
Being connected with the first header body 21 fixing and connect, the interface at the first adapter 24 place is as heat exchange
The first interface that device is connected with system.First header body 21 is hollow structure, along the first header
The axially arranged hole 211 having multiple end for flat tube 40 to insert of body 21, one end of flat tube 40 is stretched
Hand-hole 211 also passes through to be welded and fixed, and the first header 20 two ends are respectively fixedly connected with the first end cap 22,
The cavity of relative closure is formed in making the first header 20.
As it is shown in figure 5, the second header 30 includes the second header body 31 and the second of two ends
End cap the 32, second stub (tube) the 33, second adapter 34, the second adapter 34 is by the second stub (tube) 33
Being connected with the second header body 31 fixing and connect, the interface at the second adapter 34 place is as heat exchange
The second interface that device is connected with system.Second header body 31 is also hollow structure, is provided above with
The hole 311 that multiple ends for flat tube 40 are inserted, the other end of flat tube 40 stretches into hole 311 and passes through
Being welded and fixed, the two ends of the second header body 31 are respectively fixedly connected with the second end cap 32, make second
The cavity of relative closure is formed in header 30.
Flat tube 40 is the flat structure of longitudinal extension before forming, and it has bigger two relative of area
Load-bearing surface, the most curved extension of described flat tube, the overbending direction of this arc be towards described wherein
One load-bearing surface one lateral buckling, flat tube 40 includes flat segments 42 and the main paragraph 41 at two ends after shaping,
Each flat tube 40 main paragraph 41 is arc-shaped structure, and main paragraph 41 includes inner ring surface 411, outer ring surface
411 ', the side surface 412 that area is less, all flat tube main paragraphs are that substantially concentric ring is arranged, two masters
Body section may make up a substantially closed annular, and the flat segments 42 at flat tube two ends extends the most laterally, and the two
In the same plane, bearing of trend is substantially opposite, and the annular center of circle of flat tube 40 is to two flat segments 42
The vertical dimension of extended line is equal.The flat segments 42 of all flat tube 40 homonymies is parallel to each other and is placed equidistant,
The flat segments 42 at two ends is plugged in the hole of relative two header respectively, header and flat segments
42 are vertically arranged, and correspondingly, are respectively provided with import and export on two headers, and mode refers to it
Front description.The length of two flat segments 421 of the flat tube arranged the most inwardly is the longest, and the most outside flat
The length of the flat segments 42 of pipe is the shortest.Flat tube is divided into Part I 40c and Part II 40d, and first
Part flat tube is contrary with the wrap direction of Part II flat tube, so that the core of heat exchanger becomes
Not having the hole portion of flat tube and fin, the one in the two ends flat segments of each of which flat tube can be arranged on
Have between the flat segments 421 that two flat tube two ends of inner side, the oppositely extending direction of another flat segments are relative
Clearance, in order to make full use of heat exchange area, can be also provided with fin, as shown in Figure 7 in clearance.Flat
Having inner passage in pipe 40, inner passage extends along the length direction of flat tube 40, flat tube 40 two ends
The end of flat segments 42 is inserted the first header 20 and with the second header 30 thus is connected the first header
20 and second header 30.
The multiple holes 211 arranged on first header body 21 sidewall are along the first header body 21
Axially arrangement.The multiple holes 311 arranged on second header body 31 sidewall are along the second header body
The axial arrangement of 31.Due to perforate on tube wall, radial hole is more more convenient than oblique hole machined, low cost,
Therefore the hole on the first header body 21 and the second header body 31 sidewall is all opened in radially, hole
Between be arranged in parallel.At least some of of the flat segments 42 at flat tube 40 two ends inserts the first afflux respectively
In the hole of pipe body 21 and the second header body 31, flat segments 42 is big with header body central axle
Cause vertical, even if when assembling flat tube, straight cutting than oblique cutting the most convenient quickly.
As shown in Figure 8, it is provided with fin between adjacent flat tube 40, specifically, is positioned at opposite exterior lateral sides
The main part 41b of inner ring surface 411 and adjacent flat tube on its inside of main part 41a of flat tube
Outer ring surface 411 ' between be provided with fin 50, the main body of fin is roughly triangular or waveform, this
Group fin near the top ends peak portion in other words of the inner ring surface 411 of the main part 41a of the flat tube in outside it
Between the meansigma methods of spacing L2 more than it near the outer ring surface 411 ' of the main part 41b of the flat tube of inner side
End or the meansigma methods of spacing L1 of between peaks.Assuming that header external diameter is d, wall thickness is t,
The longitudinal length of the flat segments 42 of flat tube 40 either end is s, then s >=(1/3～1/2) d；Assume flat
It is h that pipe flat segments 42 inserts the degree of depth that open interior divides, then t ＜ h≤(1/3～1/2) d.
There is in flat tube 40 multiple inner passage, owing to the length of different flat tube 40 inner passages is different,
Being incremented by from the outside passage length in heat exchanger center, when channel sized flow is identical, its flow resistance is also with length
Change and different, i.e. incremental from the outside flow resistance in heat exchanger center.In order to ensure each portion of micro-channel heat exchanger
Point heat exchange property generally uniform, make the refrigerant amount of the variant flat tube of entrance 40 substantially with its heat-transfer surface
Long-pending coupling, the flow area of the inner passage of each flat tube can also be designed to difference, specifically, from
Heat exchanger center is outside, and the flow area of flat tube 40 is incremented by.As made the flow area of different flat tube and being somebody's turn to do
The length of flat tube is directly proportional, as made flow area and its length l of the flat tube 400 ' of outside relatively '
Ratio substantially identical with the ratio of its length l with the flow area of the flat tube 400 of relative interior, so change
Hot device overall heat exchange is uniform, and efficiency is preferable.
The incremental manner of the flow area of flat tube 40 can be gradual change type step by step, such as 1,2,3,4 ...；
Can also bypass the immediate leadership gradual change type, such as 1,1,2,2,3,3 ..., numeral simply signal here is passed
The mode increased, does not limit concrete ratio.Here flow area refers to a plurality of of same flat tube 40
The flow area that inner passage is total.Therefore, it can keep every inner passage 401 of different flat tube 40
Flow area constant in the case of, be gradually increased the quantity of flat tube 40 ' inner passage 401 ', as figure
Shown in 9a；Inner passage 401 quantity that can also keep different flat tube 40 is constant, is gradually increased flat
Pipe 40 " every inner passage 401 " flow area, as shown in figure 9b；It is of course also possible to be it
His form, as is shown in fig. 9 c, the flat tube 40 of relative inner has multiple inner passage 401, but relatively
The flat tube 40 in outside " ' inner passage 401 " ' negligible amounts but relatively want big, and make its total circulation
Area is greater than the flat tube of relative inner.
The plurality of inner passage is transversely arranged in order flat tube 40, laterally big at flat tube 40
Cause is uniformly distributed, and enables fluid to pass in and out each inner passage equably, to reach optimal heat exchange effect
Really.
Fin 50 generally longitudinal extension, its both sides have relative peak portion, and fin 50 is respectively arranged on
Between the inside and outside anchor ring that the main paragraph area of adjacent described flat tube is bigger, fin extends in the same direction with flat tube,
Two load-bearing surfaces that two peak portions of fin are relative with adjacent flat tube respectively are welded and fixed.
The present embodiment fin uses corrugated fin 50, and fin has elasticity, and deformable can
Plasticity is good, can carry out stretching extension according to the degree of crook of flat tube, to be suitable between adjacent flat tube
Installing space, the crest of these fin both sides is i.e. peak portion described above.By adjusting the close of fin 50
Degree can also improve heat transfer effect, specifically, in view of wind speed is outwards incremented by from heat exchanger center, and can
With from heat exchanger from inside to outside, increase the density of fin 50.Generally, the fin in unit length is used
Crest number weigh its density.Certainly, the incremental manner of the density of fin 50 can be gradual change step by step
Formula, such as 1,2,3,4 ...；Can also bypass the immediate leadership gradual change type, such as 1,1,2,2,3,3 ...,
Here the numeral mode that simply signal is incremented by, does not limit concrete ratio.
Be additionally provided with interior side plate 61 in the inner side of micro-channel heat exchanger inner side flat tube 40, interior side plate 61 with
Inner side flat tube 40 generally remains and extends in parallel, and fin 50 is provided therebetween, and interior side plate 61 is also
Can be selected for flat tube, simply its two ends do not connect with header.Outside at heat exchanger outermost flat tube 40
Being additionally provided with outer side plate 62, outer side plate 62 generally remains with outermost flat tube 40 and extends in parallel, the two it
Between be provided with fin 50, outer side plate 62 also can be selected for flat tube, and its two ends do not connect with header.
Add man-hour, all parts of micro-channel heat exchanger are ready to, and corresponding flat tube is processed into
Corresponding required different length, and the flat tube of different length is bent into there is flat segments and main paragraph
Structure, is then respectively charged into flat tube hole corresponding to header 211, is completed by remaining parts,
And by between adjacent flat tube, between flat tube and the interior side plate of inner side, outermost flat tube and outer side plate
Between load the different fin of length, and carry out assembling fixing, be then welded and fixed by stove.
Except monolayer heat exchanger presented hereinbefore, it is also possible to be the structure of multilamellar, with Figure 10,11 bilayers
As a example by heat exchanger, junction between the layers arranges header or transfer tube, the second of ground floor
Header 30 is connected by connector 92 with the second header 30a of the second layer, the second of ground floor
Header 30 be provided with the second sidewall relative for header 30a of the second layer corresponding hole 301,
301a, on connector 92, correspondence position also is provided with hole 921, the second header 30 of ground floor, connection
Body 92 fixes connection with the second header 30a three of the second layer and the position in hole is corresponding, i.e. upper strata
Second header 30 is connected by connector 92 with the second manifold 30a of the second layer.
Cold-producing medium, will be from the second header 30 by connector 92 after ground floor heat exchanger is covered
Entering the second header 30a of the second layer, the second layer of then having gone further, in Figure 10, arrows is system
Cryogen flows to, it is of course also possible to reverse flow.
Micro-channel heat exchanger described above is single process, in addition to this it is possible to be multipaths.
In Figure 12 as a example by monolayer two flow process, the first stub (tube) 23 and the second stub (tube) 33 and the first header
The sidewall of 20b is fixedly installed, and axially arranged has septalium, dividing plate along it in the first header 20b
100 insert septalium and by being welded and fixed, by the setting of dividing plate 100, by the first header 20b
Inner chamber be divided into the cavity of two mutual isolations, the i.e. first manifold 201b and the second manifold 202b,
First adapter the 24, second adapter 34 respectively with described first manifold 201b and the second manifold 202b
Connection.By the setting of dividing plate, flat tube 40 is divided into two groups, the i.e. first pipe group 40a and the second pipe group
40b, one end of the first pipe group 40a connects with the first manifold 201b, the other end then with the second afflux
Pipe 30b inner space；One end of second pipe group 40b connects with the second manifold 202b, and the other end is then
With the second header 30b inner space.So, this micro-channel heat exchanger has two flow processs, refrigeration
Agent enters into the first manifold 201b from first adapter the 24, first stub (tube) 23, then by the first pipe
Group 40a to second header 30b, this is first flow process；Cold-producing medium is from the second header 30b again
Entering the second pipe group 40b, flow to the second manifold 202b, finally flow out from the second adapter 34, this is
Second flow process.
Heat exchanger except be concentric annular can also is that other circuluses such as flat tube be by multiple arcs with
Rectilinear combination, if flat tube is the heat exchanger substantially combined in polygonized structure, Figure 13
Showing the polygon micro-channel heat exchanger of a single header, wherein flat tube includes the flat segments at two ends
42, main part 41c, main part 41c include multiple to form generally polygonal straight section 413 and phase
For multiple segmental arcs 414 of transition between adjacent straight section 413, two arranged from inside to outside adjacent flat
Between pipe, the spacing at diverse location is roughly equal, including the spacing between adjacent flat tube straight section 413
Equal with the spacing between adjacent segmental arc 414, and between adjacent flat tube straight section and adjacent flat tube
Fin 50 it is provided with between segmental arc.Polygon mentioned here includes but not limited to triangle, four limits
Shape, pentagon, hexagon etc., remaining structure and assembling mode can refer to above, and I will not elaborate.
Mentioning in this specification and be provided with fin between adjacent flat tube, " adjacent flat tube " refers to here
Along the flat tube between the adjacent position of heat exchanger radial direction between same layer.
It should be understood that above example be merely to illustrate the present invention and and the unrestricted present invention retouched
The technical scheme stated, such as to "front", "rear", "left", "right", " on ", D score isotropy
Define, although this specification has been described in detail with reference to the above embodiments, but, ability
Territory it is to be appreciated by one skilled in the art that person of ordinary skill in the field still can be to above-mentioned reality
Execute example to carry out being mutually combined, revising or equivalent, and all are without departing from the spirit of the present invention and model
The technical scheme enclosed and improvement thereof, all should contain in scope of the presently claimed invention.
Claims (11)
1. a micro-channel heat exchanger, including: at least one of which structure, i.e. ground floor, ground floor includes
One header, the second header, multiple flat tube and be located at the fin between adjacent flat tube；Described microchannel
The middle part of heat exchanger include one substantially close or nonocclusive hole portion, described hole portion be not provided with flat tube with
Fin；Each described flat tube has two apparent surfaces that area is bigger, each flat tube include main paragraph and
The flat segments at two ends, main paragraph includes at least one non-straight line segment, and the overbending direction of this non-straight line segment is court
To one of them load-bearing surface side inner bending described, the flat segments at flat tube two ends extends the most laterally, and
The two is in the same plane, and bearing of trend is substantially opposite；Described fin both sides have relative peak portion,
Described fin is respectively arranged between adjacent described flat tube, and fin extends in the same direction with flat tube, the two of described fin
Relative with adjacent flat tube respectively two surfaces, peak portion are connected；It is internal logical that each flat tube is respectively provided with at least one
Road, described inner passage extends along the length direction of described flat tube；One end connection institute of the flat tube of ground floor
Stating the first header, the other end connects described second header；Described first header is provided with first and connects
Mouthful；Described first header and the second header lay respectively at the both sides of described heat exchanger.
2. micro-channel heat exchanger as claimed in claim 1, it is characterised in that: described flat tube includes two ends
Flat segments and main part, described non-straight line segment is arranged on described main part, and described non-straight line segment is bending
Section or segmental arc, be provided with described fin between two surfaces of the adjacent described flat tube of main part；Same wing
Two flat tubes that the peak portion at the two ends of sheet connects, between its main part of diverse location of described length direction
Spacing roughly equal.
3. micro-channel heat exchanger as claimed in claim 2, it is characterised in that: described header is provided with
For the perforate of grafting flat tube, at least some of of described flat tube flat segments inserts connection in described perforate；
Flat segments length s of described flat tube either end >=(1/3～1/2) d+3, wherein d is header external diameter,
Unit is millimeter；Described flat tube flat segments inserts degree of depth h≤(1/3～1/2) d that open interior is divided, and
H ＞ t, wherein t is header wall thickness.
4. micro-channel heat exchanger as claimed in claim 1, it is characterised in that: described micro-channel heat exchanger
Substantially ring-like structure or include circulus, described first header and the second header is almost parallel sets
Putting, described first header is substantially vertical with the axis of described first header with the hole of the cooperation of flat tube to be set
Putting, described second header is substantially vertical with the axis of described second header with the hole of the cooperation of flat tube to be set
Put.
5. the micro-channel heat exchanger as described in claim 1-4 is arbitrary, it is characterised in that: from described micro-logical
Heat exchanger center, road is outside, and total flow area of the inner passage of described flat tube is stepped up, and is located relatively at
Total flow area of the inner passage of outside flat tube is more than or equal to the inside of the flat tube being located relatively at inside
Total flow area of passage.
6. the micro-channel heat exchanger as described in claim 1-4 is arbitrary, it is characterised in that: different is described
Fin peak number in the density of fin, i.e. unit length, becomes larger to the periphery from the center of heat exchanger.
7. the micro-channel heat exchanger as described in claim 1-4 is arbitrary, it is characterised in that: change described in being positioned at
The inner side of hot device inner side flat tube is provided with the interior side plate of extension parallel with it and is located at fin therebetween；
The outside being positioned at described heat exchanger outermost flat tube is provided with the outer side plate of extension parallel with it and is located at the two
Between fin；The described integrally formed circular inside diameters of interior side plate is more than the twice of header external diameter；Described
The radial distance of inside and outside side plate and the same length of header.
8. the micro-channel heat exchanger as described in claim 1-7 is arbitrary, it is characterised in that: different flat tubes
Flow area roughly the same with its length ratio.
9. the micro-channel heat exchanger as described in claim 1-8 is arbitrary, it is characterised in that: different is described
Fin peak number in the density of fin, i.e. unit length, becomes larger to the periphery from the center of heat exchanger.
10. the micro-channel heat exchanger as described in the claims are arbitrary, it is characterised in that: described first
Described first header of layer has the cavity that at least two is isolated mutually, the i.e. first chamber and the second chamber；The
The flat tube of one layer at least includes two groups, the i.e. first pipe group and the second pipe group, one end connection institute of the first pipe group
Stating the first chamber, the other end connects described second header inner chamber, one end connection described second of the second pipe group
Chamber, the other end connects described second header inner chamber；In described first chamber and described second chamber at least within
One has for external first interface.
11. micro-channel heat exchangers as described in the claims 1-9 are arbitrary, it is characterised in that: described
First header and the second header are arranged substantially in parallel, and described flat tube includes Part I and second
Point, Part I forms described hole portion mutually on the contrary with the overbending direction of Part II；Relatively arrange inwardly
The length of two flat segments of flat tube is more than the flat segments of the most outer flat tube, described two ends flat segments
Bearing of trend is contrary.
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| CN201510379769.3A CN106322840A (en) | 2015-06-30 | 2015-06-30 | Micro-channel heat exchanger |
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| CN201510379769.3A CN106322840A (en) | 2015-06-30 | 2015-06-30 | Micro-channel heat exchanger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461966A (en) * | 2017-07-24 | 2017-12-12 | 珠海格力电器股份有限公司 | Heat pump unit, micro-channel heat exchanger and manufacturing method thereof |
| CN113251831A (en) * | 2021-04-30 | 2021-08-13 | 三花控股集团有限公司 | Heat exchanger and heat exchange module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107461966A (en) * | 2017-07-24 | 2017-12-12 | 珠海格力电器股份有限公司 | Heat pump unit, micro-channel heat exchanger and manufacturing method thereof |
| CN113251831A (en) * | 2021-04-30 | 2021-08-13 | 三花控股集团有限公司 | Heat exchanger and heat exchange module |
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Effective date of registration: 20191028 Address after: 310018, No. 289-1, No. 12, Poplar Street, Hangzhou economic and Technological Development Zone, Zhejiang Applicant after: Sanhua Micro Channel Heat Exchanger Inc. Address before: 310018, Zhejiang, Hangzhou economic and Technological Development Zone, No. 12 Poplar Street, 289-3 street, No. Applicant before: HANGZHOU SANHUAJIA ELECTROTHERMAL MANAGEMENT SYSTEM CO., LTD. |
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