CN201637295U - Microchannel heat exchanger - Google Patents
Microchannel heat exchanger Download PDFInfo
- Publication number
- CN201637295U CN201637295U CN2009202540600U CN200920254060U CN201637295U CN 201637295 U CN201637295 U CN 201637295U CN 2009202540600 U CN2009202540600 U CN 2009202540600U CN 200920254060 U CN200920254060 U CN 200920254060U CN 201637295 U CN201637295 U CN 201637295U
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- cooling
- cooling fin
- water
- heat exchanger
- microchannel
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Abstract
The utility model discloses a microchannel heat exchanger comprising a cooling sheet (1) and a cooling substrate (2), wherein the cooling substrate (2) is provided with a plurality of water inlet and outlet channels (21) and (22). The multiple channels form the circulating process of cooling water, since the convection heat transfer coefficient in the microchannel is higher to ten of thousands, the temperature of the substrate (2) can be led to be close to that of the cooling water, namely the temperature of the root of the cooling sheet (1) is close to that of the cooling water, therefore, the temperature of the end part of the microchannel cooling sheet (1) can be greatly reduced to lead cooled medium to be cooled evenly.
Description
Technical field
The utility model relates to a kind of heat exchanger, particularly a kind of micro-channel heat exchanger.
Background technology
At present, the cooling fin of the cooler of employing and cooling matrix all are red copper materials, and the geometry of the matrix of cooler is the cuboid that inside has the water guide microchannel, and Fig. 3 is the sectional drawing of matrix.Cooling fin is welded on the matrix, and the radiant heat that cooling fin absorbs is delivered in the matrix by conduction process and then passes to the cooling water of matrix inside, takes away heat by water.But have many shortcomings in the matrix conduction process of such cooler: at first, the wall thickness thickness of this cuboid is bigger as shown in Figure 3, secondly, the surface area of passage is little, moreover, convection transfer rate is lower, and heat can not transmit feedwater fully, timely, takes away heat by water.The geometry of the heat-conducting plate of common cooling fin is solid rectangular slab, and as shown in Figure 8, this sheet is placed oneself in the midst of between the liquefied gas or other distribution mediums that is cooled, and absorbs their radiant heat and convection heat transfer' heat-transfer by convection heat.By conduction process, heat is transmitted to matrix, and then heat is taken away by water then.Obviously, such diabatic process has many shortcomings: at first, the ability of such cooling fin heat conduction from one end to the other side is limited.Secondly, when heat was big, the free end temperature of cooling fin must be more high than base temperature, thereby cause cooling effect inhomogeneous.The 3rd, the rising of cooling fin temperature must cause its oxide etch very fast, thus the service life of having reduced cooling fin.The 4th, cooling fin integral body inhomogeneous must cause radiation cooling effect variation to a certain extent, and causes the inhomogeneous cooling of the liquefied gas that is cooled or other distribution mediums even.The 5th, material can only be selected highly heat-conductive materials such as silver, copper, thallium, aluminium for use, or the like.
Summary of the invention
The purpose of this utility model can make the medium cooling that is cooled even and provide a kind of, the micro-channel heat exchanger that exchange capability of heat is stronger for overcoming above-mentioned weak point.
The technical scheme that the utility model adopted is: micro-channel heat exchanger comprises cooling fin and cooling matrix, and this cooling matrix is provided with several water-in and water-out passages.
As a kind of improvement of the present utility model: described cooling fin is provided with several water-in and water-out passages, and this water-in and water-out passage communicates with the water-in and water-out passage of described cooling matrix.
Improve as another kind of the present utility model: described cooling fin is a tubulose.
Improve as another kind of the present utility model: the channel inner surface of described cooling fin is to have concavo-convex enhanced heat transfer surfaces.
Improve as another kind of the present utility model: the passage outer surface of described cooling fin is to have concavo-convex enhanced heat transfer surfaces.
Cooling matrix of the present utility model is provided with the water-in and water-out passage of several random geometries, has so just constituted the cyclic process of cooling water.Because its convection transfer rate can make the temperature of the temperature of matrix near cooling water up to tens thousand of in this microchannel.Just the temperature of cooling fin root is near cooling water temperature.Therefore, can reduce the temperature of cooling fin end greatly, make to be cooled the medium cooling evenly.
The indoor design of the utility model cooling fin one or more MCAs, be the durable microchannel cooling fin of a kind of efficient long-acting, the water in the microchannel by the circulation radiations heat energy is taken away.This cooling fin has not only been strengthened the radiant heat transfer process, also strengthened Convective Heat Transfer, and greatly reduce the surface temperature of cooling fin, improved simultaneously the cooling capacity and the oxidation resistent susceptibility of cooling fin greatly, be very beneficial for the liquid fiber around the cooling fin or the cooling of other medium.
Microchannel of the present utility model cooling fin has overcome all shortcomings of present used red copper cooling fin.Microchannel of the present utility model cooling fin is the flat sheet type MCA, can select for use any metal material to make.Its advantage: the 1. conduction process of cooling fin is become the heat convection of cooling fin and water, strengthened exchange capability of heat.2. original solid cooling fin has become the hollow cooling fin of microchannel (group), utilizes the circulation of liquid, has strengthened diabatic process, has strengthened cooling capacity.3. process for machining and manufacturing and material selects the variation that has produced essence for use.4. according to thought of the present utility model, designed the cooling fin of multiple structure.At first, (parameatal heat conduction distance is the wall thickness of a passage to such cooling fin through very short heat conduction distance with the radiant heat that absorbs, and periphery farthest also be no more than 4 millimeters--for single channel) transfer heat to water, the heat transportation ability is very big; Secondly, when heat was big, the temperature of microchannel cooling fin raise, when hot-fluid was big again, the temperature of cooling fin can surpass 100 degree, and the heat convection in the microchannel becomes boiling heat transfer, exchange capability of heat is stronger, and the temperature of microchannel cooling fin only raises the several years, so heat loss through radiation is strengthened; The temperature of the 3rd whole microchannel cooling fin is even substantially, so cooling effect is very even.The temperature of the 4th cooling fin is up to degree more than 100, and the oxide etch process of the microchannel cooling fin of any material is all very slow.The temperature of the 5th microchannel cooling fin is low, causes the radiation cooling effect to be strengthened.The 6th material choose highly heat-conductive materials such as being not limited to silver, copper, thallium, aluminium, can select any metal material for use.The 7th can adopt the measure of strengthening heat convection further to improve convection transfer rate, can adopt spraying method to improve absorptive rate of radiation, further strengthens cooling effect.
Description of drawings
Fig. 1 is the structural representation of the utility model micro-channel heat exchanger
Fig. 2 is that A---A shown in Figure 1 is to cutaway view.
Fig. 3 is the cooling basal body structure schematic diagram of common heat exchanger.
Fig. 4 is a kind of embodiment structural representation of the utility model micro-channel heat exchanger cooling fin.
Fig. 5 is a kind of embodiment structural representation of the cooling fin channel inner surface of the utility model micro-channel heat exchanger.
Fig. 6 is a kind of embodiment structural representation of the cooling fin passage outer surface of the utility model micro-channel heat exchanger.
Fig. 7 is a kind of schematic diagram that the stream of the utility model micro-channel heat exchanger cools off the channel cross-section structure of matrix.
Fig. 8 is common micro-channel heat exchanger structural representation.
Fig. 9 is the cooling basal body structure schematic diagram of the utility model micro-channel heat exchanger.
The specific embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9, the utility model micro-channel heat exchanger comprises cooling fin 1 and heat exchanger matrix 2, and this cooling matrix 2 is provided with the water-in and water-out microchannel 21,22 of several random geometries.So just, constituted the cyclic process of cooling water.Because convection transfer rate can make the temperature of the temperature of matrix 2 near cooling water up to tens thousand of in this microchannel.Just the temperature of cooling fin 1 root is near cooling water temperature.Therefore, can reduce the temperature of cooling fin 1 end greatly, make to be cooled the medium cooling evenly.
The utility model cooling fin 1 is provided with the water-in and water-out passage 1,12 of several random geometries, this water-in and water-out passage communicates with the water-in and water-out passage of cooling matrix 2, this cooling fin 1 links together with the matrix 2 of band microchannel, has just formed micro-channel heat exchanger.Micro-channel heat exchanger mainly contains two kinds of forms, and is as shown in Figure 2 a kind of, the micro-channel heat exchanger that microchannel cooling fin 1 and binary channels heat exchanger matrix 2 are formed; Another kind as shown in Figure 8, the micro-channel heat exchanger that common solid cooling fin and band micro-channel heat exchanger matrix 2 constitute.
As shown in Figure 9, micro-channel heat exchanger matrix 2 can have three or three with upper channel, as being made as binary channels, as Fig. 4, Fig. 5, shown in Figure 6, the shape of cross section of the water-in and water-out passage 21,22 of micro-channel heat exchanger matrix 2 can be rectangle, leg-of-mutton, circular, polygonal etc.Cooling fin 1 of the present utility model is provided with several water-in and water-out passages, as be made as binary channels 11,12, this passage is a random geometry, cooling matrix 2 is designed to binary channels heat exchanger matrix 2 for the structure that adapts to microchannel cooling fin 1 passage, microchannel cooling fin 1 seals with heat exchanger matrix 2 junctions, guarantees that liquid can not spill.The water that comes of heat exchanger matrix 2 passage 21 connection water inlet piping also links to each other with cooling fin water inlet 11 as shown in Figure 2, the water return outlet 12 of second passage 22 and microchannel cooling fin 1 is connected, so just, constituted the cyclic process of cooling water, cooling water just can be taken away heat continuously from microchannel cooling fin 1.Because convection transfer rate can make the temperature of the temperature of matrix 2 near cooling water up to tens thousand of in the microchannel.Just the temperature of microchannel cooling fin 1 root is near cooling water temperature.Therefore, can reduce the temperature of microchannel cooling fin 1 end greatly.
As Fig. 4, Fig. 5, shown in Figure 6, the most basic version of microchannel of the present utility model cooling fin 1, this version can derive many other geometrical layout, as being " L " shape.The channel design of various geometries and difform microchannel cooling fin 1 shape directly constitute microchannel, microchannel of the present utility model cooling fin 1.Though these microchannel cooling fin 1 shapes differences even the form that may depart from microchannel cooling fin 1 that has all are different geometry form of the present utility model in itself.For ease of processing, the utility model cooling fin 1 can be divided into two, ditching groove on two at first respectively, and two are involutory together then, have so just formed the cooling fin 1 that has passage.
As Fig. 5, shown in Figure 6, microchannel of the present utility model cooling fin 1 also can be tubulose, and the heat transfer distances that this cooling is 1 is shorter.
The channel inner surface of the various geometries of the utility model cooling fin 1, can be smooth surface, it also can be rough surface, as shown in Figure 5, not only can be that smooth surface also can be the convex-concave enhanced heat transfer surfaces for arbitrary shape, the microchannel of this shape have increased the heat exchange area of cooling fin 1.These surperficial cooling fins 1 and the multi-form cooling fin identical with its principle all are parts of the present utility model, are class methods of strengthening heat convection.
Same, the outer surface of cooling fin 1 also can be various geometries, as shown in Figure 6, as being the convex-concave enhanced heat transfer surfaces for arbitrary shape, this structure also is the heat exchange area that has increased cooling fin 1.The data of the coarseness data of outer surface and spraying high-absorbility material, these cooling fins 1 and the multi-form cooling fin 1 identical with its principle all are the scope that the utility model is protected in essence.
Shown in Fig. 7, the cross section can be various geometries such as triangle, square, circle in cooling matrix 2 passages.
The utility model also comprises the micro-channel heat exchanger that various technologies manufacture.These manufacturing process have comprised global formation, welding and crooked calendering manufacture method.
The most basic version of microchannel of the present utility model cooling fin 1 such as the channel design of Fig. 2 and derivative many other geometries thereof; Patent right has comprised the design that produces the passage in one or more various cross sections on the cooling fin 1.The channel design of various geometries, the cross section scale of passage can reach the 0.1-10 millimeter, the passage of varying number, quantity can reach 1-1000.The channel inner surface patent claim of above-mentioned various key elements comprises---smooth surface and rough surface, the data of roughness can reach the 0-1 millimeter.The refined structure on surface has horizontal line shape, and vertically line shape cross waves shape and discontinuous convex-concave shape are streamed post or acupuncture and concavity hole, are class methods of strengthening heat convection.The data of the outer surface of the cooling fin 1 of various geometries, it is the part of this patent, the coarseness data that has comprised outer surface-----smooth surface, rough surface, the refined structure on surface has horizontal line shape, and vertically line shape cross waves shape and discontinuous convex-concave shape are streamed post or acupuncture and concavity hole, be class methods of strengthening heat convection, they are parts of augmentation of heat transfer.Spraying high-absorbility material also is the part of this patent.The microchannel cooling fin 1 that is directly constituted by the channel design of the various geometries of varying number also is the part of this patent.When the inside outward direction of the passage of various geometries tilts.The cooling fin 1 that this patent can adopt various technologies to manufacture.These manufacturing process have comprised global formation, welding and punching press, bending, calendering manufacture method.
The utility model cooling matrix 2 as shown in Figure 9, can be single channel, binary channels, also can be more passage.Its passage can be rectangle, leg-of-mutton, trapezoidal, circular; Yardstick is from 0.1～10m scope.
The heat transferring medium of the utility model micro-channel heat exchanger can be a water, also can be the cooling of organic liquids such as ethylene glycol and composition thereof.
The utility model heat exchanger can be placed between the liquefied gas or other distribution mediums that is cooled, absorb their radiant heat and convection heat transfer' heat-transfer by convection heat, can also drive two or more heat exchangers by rotating shaft, between the liquefied gas that is cooled or other distribution mediums, rotate, be the stirring-type heat exchanger.The utility model is not only applicable to the heat that stirring-type cooling chemical reaction produces, and equally can be used for other industry yet, as, the recovery of high-temperature gas waste heat, the utilization of vehicle exhaust heat etc.
Claims (5)
1. a micro-channel heat exchanger comprises cooling fin and cooling matrix, and it is characterized in that: described cooling matrix (2) is provided with several water-in and water-out passages (21), (22).
2. micro-channel heat exchanger according to claim 1 is characterized in that: described cooling fin (1) is provided with several water-in and water-out passages (11), (12), and this water-in and water-out passage communicates with the water-in and water-out passage of described cooling matrix (2).
3. micro-channel heat exchanger according to claim 1 and 2 is characterized in that: described cooling fin (1) is a tubulose.
4. micro-channel heat exchanger according to claim 2 is characterized in that: the channel inner surface of described cooling fin (1) is to have concavo-convex enhanced heat transfer surfaces.
5. micro-channel heat exchanger according to claim 1 and 2 is characterized in that: the passage outer surface of described cooling fin (1) is to have concavo-convex enhanced heat transfer surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202540600U CN201637295U (en) | 2009-10-16 | 2009-10-16 | Microchannel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202540600U CN201637295U (en) | 2009-10-16 | 2009-10-16 | Microchannel heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637295U true CN201637295U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202540600U Expired - Fee Related CN201637295U (en) | 2009-10-16 | 2009-10-16 | Microchannel heat exchanger |
Country Status (1)
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| CN (1) | CN201637295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108926783A (en) * | 2017-05-26 | 2018-12-04 | 南京中硼联康医疗科技有限公司 | Neutron capture treatment system and target for particle beam generating apparatus |
| CN108934120A (en) * | 2017-05-26 | 2018-12-04 | 南京中硼联康医疗科技有限公司 | Target and neutron capture treatment system for neutron beam generating apparatus |
| CN108926781A (en) * | 2017-05-26 | 2018-12-04 | 南京中硼联康医疗科技有限公司 | Neutron capture treatment system and target for particle beam generating apparatus |
-
2009
- 2009-10-16 CN CN2009202540600U patent/CN201637295U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108926783A (en) * | 2017-05-26 | 2018-12-04 | 南京中硼联康医疗科技有限公司 | Neutron capture treatment system and target for particle beam generating apparatus |
| CN108934120A (en) * | 2017-05-26 | 2018-12-04 | 南京中硼联康医疗科技有限公司 | Target and neutron capture treatment system for neutron beam generating apparatus |
| CN108926781A (en) * | 2017-05-26 | 2018-12-04 | 南京中硼联康医疗科技有限公司 | Neutron capture treatment system and target for particle beam generating apparatus |
| CN108934120B (en) * | 2017-05-26 | 2024-04-12 | 南京中硼联康医疗科技有限公司 | Target for neutron ray generating device and neutron capturing treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20111016 |