CN205482449U - Microchannel heat exchanger with structure is shunted - converged - Google Patents
Microchannel heat exchanger with structure is shunted - converged Download PDFInfo
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- CN205482449U CN205482449U CN201620290685.2U CN201620290685U CN205482449U CN 205482449 U CN205482449 U CN 205482449U CN 201620290685 U CN201620290685 U CN 201620290685U CN 205482449 U CN205482449 U CN 205482449U
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Abstract
The utility model provides a reposition of redundant personnel has the microchannel heat exchanger of the structure of converging, including a metal microchannel base member, it has a plurality of fin units to take shape on the base member, its mirror symmetry along direction of perpendicular to fluid flow in arrange into first, second fin unit is right, first, second fin unit is to reverse setting, first, second fin unit is to longshore current body flow direction interval arrangement in proper order, and the right fin unit interval of first fin unit is greater than the right fin unit interval of second fin unit for the right rear end embedding that is located the second fin unit at the upper reaches is located the right front end of the first fin unit in its low reaches and forms confluence channel, the right front end embedding of second fin unit that is located low reaches is located the right rear end and the formation reposition of redundant personnel passageway of first unit fin at its upper reaches, form little access structure behind the array. The utility model discloses make the coolant liquid be in the thermally developing section all the time in the microchannel, form the by -pass flow and cause the turbulent flow to restrain boiling instability, thereby showing the heat transfer of intensive microchannel.
Description
Technical field
This utility model relates to a kind of heat exchanger, particularly relates to a kind of micro-channel heat exchanger.
Background technology
Along with the fast development of microelectronics industry, various Related products are just integrated with unprecedented speed-altitude
Changing and miniaturization, the temperature thus caused raises rapidly also becomes the bottleneck restricting its high speed development.Right
This, as ensure that the thermal control technology of the reliable and stable work of microelectronic product is the most more and more by each side
The concern in face.Micro-channel heat exchanger is owing to volume is little, lightweight, be suitable for compact package, heat dispersion
High it is considered to be the effective solution route of high heat flux problem.Common micro-channel heat exchanger is at metal
Or in silicon base, process the rectangle of some parallel arrangements, triangle, the open type MCA such as trapezoidal, use
Cover plate coupling package becomes coolant fluid channel, is connected with the external world and forms coolant circuit.Electronic devices and components produce
Raw thermal pathways articulamentum is delivered to MCA, is taken away by the coolant of flowing in microchannel, thus
Realize the purpose of cooling electronic component.Current micro-channel heat exchanger mainly uses parallel micro channel array,
After fluid enters microchannel, carry out the development of flow boundary layer and thermal boundary layer simultaneously.When thermal boundary layer also
Not up to territory, fully developed zone, heat transfer coefficient and Nu Saier coefficient are the biggest, and heat transfer property is relatively good, but
Being as the expansion of flowing, heat transfer coefficient and Nu Saier coefficient decline rapidly, thus cause obvious conductivity of heat
Can reduce, cannot meet the cooling requirements of powerful device.Additionally, parallel microchannels structure is due to runner
Cross-sectional area is consistent along flowing to, and when biphase boiling forms bubble, the pressure in the middle of passage can be caused big, drive
Bubble of taking offence is past flows flow upstream, thus causes serious boiling instability problem.
Utility model content
Main purpose of the present utility model is to overcome the above-mentioned deficiency of existing micro-channel heat exchanger, it is provided that a kind of
Micro-channel heat exchanger, the effect of notable augmentation of heat transfer.
In order to solve above-mentioned technical problem, this utility model provides a kind of has the micro-of shunting-bus structure
Channel heat exchanger, including a metallic micro channel matrix；Multiple fin unit it is formed with on described matrix, described
Fin unit along be perpendicular to fluid flowing direction along specular be arranged in the first fin unit to and the second wing
Blade unit pair；Described first fin unit to and the second fin unit in oppositely arranged；
Described first fin unit to and second fin unit direction to flowing along the fluid row of interval successively
Row, and the spacing of the fin unit of described first fin unit pair is more than the middle fin list of the second fin unit
The spacing of unit so that the rear end of the second fin unit pair being positioned at upstream embeds the first fin downstream
The front end of unit pair also forms busway；The front end of the second fin unit pair being positioned at downstream embeds and is positioned at it
The rear end of the first module fin pair of upstream also forms split channel；Thus formed on the matrix along stream
Shunting-the busway of body flow direction；
Described shunting-busway carries out battle array on the surface of described matrix along the direction vertical with fluid flowing
Row arrangement, forms MCA.
In a preferred embodiment: described fin unit is made up of at least two sections of fins；Described two sections of fins by
Return portion connects so that the outline of described fin unit is Y-shaped.
In a preferred embodiment: the spacing of the fin unit of front end is by described second fin unit
0.6-1.0mm, the spacing of the fin unit of rear end is 1.2-2.4mm；Described busway and split channel
Width is 0.1-0.4mm.
In a preferred embodiment: the thickness of described fin is 0.5-2mm, and in described fin, first paragraph is a length of
3-10mm, second segment is parallel to each other with first paragraph and length is equal, by return portion between first paragraph and second segment
After connection, it is 1-2mm be perpendicular to fluid flowing to spacing distance.
In a preferred embodiment: described return portion be shaped as vertical curve, oblique line, circular arc, elliptic arc,
One in parabola.
In a preferred embodiment: described metallic micro channel matrix is copper base or aluminium base or stainless steel substrate.
Technique scheme of the present utility model has the advantage that compared to existing technology
1. a kind of micro-channel heat exchanger with shunting-bus structure disclosed in this utility model, multistage fin
Version adds the contact area with fluid, can define the more nucleus of boiling, the most more added with
It is beneficial to the phase-change heat transfer of refrigeration working medium；And interrupted fin structure can increase the disturbance of fluid, for low
The flox condition of Reynolds number, this disturbance can strengthen heat transfer effect on the premise of fluid resistance increase is less；
2. a kind of micro-channel heat exchanger with shunting-bus structure disclosed in this utility model, it shunts remittance
Flow structure makes coolant be constantly in thermally developing section in microchannel, working medium heat exchanging segment carry out repeatedly point
Flow and confluxed heat transmission；The bypass runner arranged can cause turbulent flow, can keep relatively low flowing
Forced convection heat transfer coefficient is improved, it is thus achieved that more higher biography than Conventional parallel micro-channel heat exchanger in the case of resistance
The thermal efficiency.
3. a kind of micro-channel heat exchanger with shunting-bus structure disclosed in this utility model, described fin list
Unit to runner form horn mouth shape, front end runner is narrow and small, and rear end runner is big, utilizes front and back end runner
Cross section difference can suppress seethe with excitement unstability and the phenomenon of backflowing of steam bubble effectively.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of MCA in this utility model preferred embodiment 1；
Fig. 2 is the enlarged drawing of MCA in this utility model preferred embodiment 1；
Fig. 3 is the schematic diagram of the second fin unit in this utility model preferred embodiment 1；
Fig. 4 is the schematic diagram that outline curve is oblique line of fin unit in this utility model preferred embodiment 1；
Fig. 5 is the schematic diagram that outline curve is circular arc of fin unit in this utility model preferred embodiment 1；
Fig. 6 is the signal that outline curve is elliptic arc of fin unit in this utility model preferred embodiment 1
Figure；
Fig. 7 be the outline curve of fin unit in this utility model preferred embodiment 1 be parabolical signal
Figure；
Fig. 8 is the micro-channel heat exchanger schematic diagram in this utility model preferred embodiment 1 after encapsulation.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
A kind of micro-channel heat exchanger with shunting-bus structure is as Figure 1-4, micro-logical including a metal
Road matrix 1, described matrix 1 is formed with multiple fin unit 21,31, and described fin unit 21 is along vertically
In fluid flowing direction on specular be arranged in the first fin unit to 2 and second fin unit to 3；Institute
State the first fin unit to 2 and second fin unit to 3 in oppositely arranged；
Described first fin unit to 2 and second fin unit to 3 along fluid flowing direction be spaced successively
Arrangement, and described first fin unit to the spacing of fin unit 21 in 2 more than the second fin unit to 3
The spacing of middle fin unit 31 so that be positioned at the second fin unit of upstream to 3 rear end embed and be positioned under it
Trip the first fin unit to 2 front end and form busway 41；It is positioned at second fin unit pair in downstream
The front end of 3 embed the first module fin being positioned at its upstream to 2 rear end and form split channel 42；Thus
Described matrix 1 is formed the shunting-busway 4 along fluid flow direction；
Described shunting-busway 4 is carried out along the direction vertical with fluid flowing on the surface of described matrix 1
Array arrangement, forms MCA.
The fin thickness of described fin unit 21,31 is 0.5-2mm, the first paragraph 311 of described fin unit
A length of 3-10mm, second segment 312 is parallel to each other with first paragraph 311 and length is equal, and by return portion
313 connect so that second segment 312 and first paragraph 311 are 1-2mm be perpendicular to fluid flowing to spacing distance；
The one being shaped as in vertical curve, oblique line, circular arc, oval Vulpes, parabola of this return portion 313, as
Shown in Fig. 3-7, preferably circular arc.
Described second fin unit is 0.6-1.0mm to the spacing of fin unit 31 in 3 front ends, wing in rear end
The spacing of blade unit 31 is 1.2-2.4mm；The width of described busway 41 and split channel 42 is
0.1-0.4mm。
Above-mentioned micro-channel heat exchanger, the version of its multistage fin adds the contact area with fluid,
The more nucleus of boiling can be defined, the most advantageously in the phase-change heat transfer of refrigeration working medium；And discontinuously
Fin structure can increase the disturbance of fluid, for the flox condition of low reynolds number, this disturbance can be
Heat transfer effect is strengthened on the premise of fluid resistance increase is less；Meanwhile, its distributing and converging structure formed makes
Obtaining coolant and be constantly in thermally developing section in microchannel, bypass runner can cause turbulent flow, can keep relatively
Forced convection heat transfer coefficient is improved in the case of low flow resistance；Additionally, utilize the cross section of front and back end runner
Difference, it is also possible to suppression boiling unstability and the phenomenon of backflowing of steam bubble effectively.
Above-mentioned micro-channel heat exchanger manufacture method, comprises the steps:
1) taking a block length 80mm, wide 80mm, the red copper substrate of thick 2mm is as microchannel matrix, to it
Surface carries out deburring process；
2) this red copper substrate fixture is fixed on micro EDM machine worktable, utilizes lever percentage
The surface that substrate is to be processed is smoothed by table；Selection tungsten electrode as the electrode of micro EDM,
Its electrode radius is 60 μm, a length of 1.2mm.According to the shape and the size that shunt-conflux MCA
Micro-EDM Machine arranges electrode machining path, uses fine electric spark forming technology to carry out microchannel
The processing of structure.Adding man-hour, open-circuit voltage is 100V, discharge capacity 100pF, and positive polarity is processed, main
Axle rotating speed is 4000r/min, and peak point current is 50A, and pulsewidth is 100 μ s, selects kerosene to be situated between for insulation
Matter；Electrode shuttle-scanning layered milling on default machining path, to control compensation for electrode wear, are often swept
The axial feeding retouching processing one layer is 10-20 μm, is machined to during the 1mm degree of depth stop processing.Now exist
Diversion section and the distributing and converging structure height of multiple runner formation that the surface galvanic corrosion of substrate goes out are 1mm, shunting
Two a width of 0.3mm of by-pass flow passage of structure, a width of 0.6mm of center-aisle；
3) take off there is the matrix 1 of staggered MCA, use kerosene that microchannel sample after processing is carried out
Ultrasonic waves for cleaning about 1 hour, then uses deionized water ultrasonic waves for cleaning about 0.5 hour, fully removes friendship
Greasy dirt in wrong MCA and oxide skin, obtain the final matrix 1 with staggered MCA.
4) the microchannel matrix 1 obtained is matched with upper cover plate 5, is attached by method for welding, it is achieved
The encapsulation of micro channel array, and link together with adapter, water pump etc., form a forced circulation loop,
Obtain complete micro-channel heat exchanger system, as shown in Figure 8.
The above, only this utility model preferably detailed description of the invention, but protection model of the present utility model
Enclose and be not limited thereto, the technology model that any those familiar with the art discloses at this utility model
In enclosing, the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Cause
This, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (5)
1. having a micro-channel heat exchanger for shunting-bus structure, including a metallic micro channel matrix, it is special
Levying and be: be formed with multiple fin unit on described matrix, described fin unit is along being perpendicular to fluid flowing
On direction specular be arranged in the first fin unit to and the second fin unit pair；Described first fin unit
To and the second fin unit in oppositely arranged；
Described first fin unit to and second fin unit direction to flowing along the fluid row of interval successively
Row, and the fin unit spacing of described first fin unit pair is more than the fin unit of the second fin unit pair
Spacing so that the rear end of the second fin unit pair being positioned at upstream embeds the first fin unit downstream
To front end and form busway；The front end of the second fin unit pair being positioned at downstream embeds and is positioned at its upstream
The rear end of first module fin pair and form split channel；Thus formed on the matrix along fluid stream
Shunting-the busway in dynamic direction；
Described shunting-busway carries out battle array on the surface of described matrix along the direction vertical with fluid flowing
Row arrangement, forms MCA.
A kind of micro-channel heat exchanger with shunting-bus structure the most according to claim 1, its feature
It is: described fin unit is made up of at least two sections of fins；Described two sections of fins are connected by return portion, make
The outline obtaining described fin unit is Y-shaped.
A kind of micro-channel heat exchanger with shunting-bus structure the most according to claim 1, its feature
It is: described second fin unit is 0.6-1.0mm to the fin unit spacing of front end, the fin list of rear end
Unit's spacing is 1.2-2.4mm；The width of described busway and split channel is 0.1-0.4mm.
A kind of micro-channel heat exchanger with shunting-bus structure the most according to claim 2, its feature
Be: the thickness of described fin is 0.5-2mm, a length of 3-10mm of first paragraph in described fin, second segment with
First paragraph is parallel to each other and length is equal, after being connected by return portion between first paragraph with second segment, vertically
Flowing to upper spacing distance in fluid is 1-2mm.
A kind of micro-channel heat exchanger with shunting-bus structure the most according to claim 4, its feature
It is: described return portion is shaped as the one in vertical curve, oblique line, circular arc, elliptic arc, parabola.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290685.2U CN205482449U (en) | 2016-04-08 | 2016-04-08 | Microchannel heat exchanger with structure is shunted - converged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290685.2U CN205482449U (en) | 2016-04-08 | 2016-04-08 | Microchannel heat exchanger with structure is shunted - converged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205482449U true CN205482449U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620290685.2U Expired - Fee Related CN205482449U (en) | 2016-04-08 | 2016-04-08 | Microchannel heat exchanger with structure is shunted - converged |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698563A (en) * | 2016-04-08 | 2016-06-22 | 厦门大学 | Microchannel heat exchanger with shunting-converging structure and manufacturing method of microchannel heat exchanger |
| CN108112218A (en) * | 2017-12-06 | 2018-06-01 | 上海交通大学 | A kind of two-way flow path divides shape micro-channel cold plate |
| CN110012640A (en) * | 2019-02-21 | 2019-07-12 | 西安交通大学 | A kind of microchannel cold plates and electronic equipment with aperture partition |
| CN111780569A (en) * | 2020-06-23 | 2020-10-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | First heat exchange plate and micro-channel condenser |
| CN115420131A (en) * | 2022-09-21 | 2022-12-02 | 西安电子科技大学 | Center difference type heat exchanger and heat exchange performance detection device thereof |
| CN117628946A (en) * | 2024-01-23 | 2024-03-01 | 中国核动力研究设计院 | Heat exchanger and heat exchange system |
-
2016
- 2016-04-08 CN CN201620290685.2U patent/CN205482449U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698563A (en) * | 2016-04-08 | 2016-06-22 | 厦门大学 | Microchannel heat exchanger with shunting-converging structure and manufacturing method of microchannel heat exchanger |
| CN108112218A (en) * | 2017-12-06 | 2018-06-01 | 上海交通大学 | A kind of two-way flow path divides shape micro-channel cold plate |
| CN110012640A (en) * | 2019-02-21 | 2019-07-12 | 西安交通大学 | A kind of microchannel cold plates and electronic equipment with aperture partition |
| CN111780569A (en) * | 2020-06-23 | 2020-10-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | First heat exchange plate and micro-channel condenser |
| CN111780569B (en) * | 2020-06-23 | 2021-11-05 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | First heat exchange plate and micro-channel condenser |
| CN115420131A (en) * | 2022-09-21 | 2022-12-02 | 西安电子科技大学 | Center difference type heat exchanger and heat exchange performance detection device thereof |
| CN115420131B (en) * | 2022-09-21 | 2024-04-19 | 西安电子科技大学 | Center differential heat exchanger and heat exchange performance detection device thereof |
| CN117628946A (en) * | 2024-01-23 | 2024-03-01 | 中国核动力研究设计院 | Heat exchanger and heat exchange system |
| CN117628946B (en) * | 2024-01-23 | 2024-04-05 | 中国核动力研究设计院 | Heat exchanger and heat exchange system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |