CN107782194A - A kind of hydrophobic heat abstractor of part - Google Patents
A kind of hydrophobic heat abstractor of part Download PDFInfo
- Publication number
- CN107782194A CN107782194A CN201711202978.6A CN201711202978A CN107782194A CN 107782194 A CN107782194 A CN 107782194A CN 201711202978 A CN201711202978 A CN 201711202978A CN 107782194 A CN107782194 A CN 107782194A
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- CN
- China
- Prior art keywords
- fin
- hydrophobic
- heat abstractor
- heat
- hydrophobic region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/04—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
- F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2245/00—Coatings; Surface treatments
- F28F2245/04—Coatings; Surface treatments hydrophobic
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to HVAC and technical field of heat exchange, specifically discloses a kind of hydrophobic heat abstractor of part, including heat transfer path is arranged at intervals with fin multiple vertical on the heat transfer path and being arranged side by side, fin is arranged on.Hydrophobic region is set on each fin top, surface increases hydrophobicity by the methods of hydrophobic coating or metal plating, and water guide body is provided with hydrophobic region.Under cooling condition, the condensed water that hydrophobic region surface is formed is easy to tumble, and exports fin by water guide body, and the main part of fin is not influenceed by condensed water, improves the heat exchange efficiency of fin.
Description
Technical field
The present invention relates to HVAC and technical field of heat exchangers, more particularly to the heat abstractor that a kind of part is hydrophobic.
Background technology
In field of heat transfer, fin adds heat transfer area, is a kind of common enhanced heat exchange by expanding the area of fin root
Mode, such as fin-tube type heat exchanger, plate-fin heat exchanger, include the radiator of such as field of heating ventilation air conditioning, be all typical
Fin application field.
Fin type heat exchange equipment with air when being exchanged heat, if fin surface temperature is less than dew-point temperature, in air
Vapor will be condensed in fin, formed condensed water.In the fin-tube type heat exchanger of field of air conditioning generally use, in order to prevent
Condensing drip is formed " water bridge " between adjacent fins, increases noise while reducing heat exchange, is typically coated in fin surface hydrophilic
Coating, allow condensing drip to form moisture film, then discharged under the driving of gravity.On the other hand, for the metal heating gas of routine
Piece, the presence of condensed water prevent radiator summer use.
Patent " a kind of finned heat exchanger " (A of CN 106767116) discloses a kind of scheme, including multiple pacifies side by side vertically
The fin of dress, multiple fins are arranged at intervals, and are simultaneously coated with hydrophilic coating on two neighboring relative surface, another side is coated with
Hydrophobic layer, after the condensing drip so on hydrophobic layer can touch the moisture film of adjacent hydrophilic layer surface, with water-wetted surface moisture film
Fusion, water film weight increase is set to accelerate draining." fin-tube type heat exchanger and air conditioner (A of CN 105485971) disclose one to patent
Kind fin-tube type heat exchanger, including at least one hydrophobic region and at least one hydrophilic region, refrigerant initially enter hydrophilic region, and
Flowed out from hydrophobic region, solve the problems, such as frosting of the air conditioner in the case of cryogenic refrigeration.But above-mentioned design all employ it is hydrophilic
Coating, moisture film is added while " water bridge " is prevented, can be only applied to the fin-tube type heat exchanger of air conditioner.
Patent of invention " a kind of radiator system of both cooling and heating " (application number：201710069031.6) propose one kind can
For the radiator system of cooling and warming, increase using porous media absorption condensation water, and by fin-tube type or plate-fin heat exchanger
Strong heat exchange.Under cooling condition, the condensed water of fin-tube type heat exchanger or plate-fin heat exchanger moves down simultaneously under the force of gravity
Finally discharge, moisture film can be formed in heat exchanger surface, hinder heat exchange.
The content of the invention
To overcome disadvantages mentioned above, it is an object of the invention to provide a kind of hydrophobic heat abstractor of part, reduces fin table
The region of moisture film on face, improve heat transfer efficiency.
In order to reach object above, the technical solution adopted by the present invention is：A kind of hydrophobic heat abstractor of part, including pass
The passage of heat and fin multiple vertical on the heat transfer path and being arranged side by side is arranged on, the fin is arranged at intervals, on fin
Portion is provided with hydrophobic region, and at least one water guide body is provided with the hydrophobic region.
Further, the hydrophobic heat abstractor of described a kind of part, the hydrophobic region surface contact angle are more than 90 °.
Further, the hydrophobic heat abstractor of described a kind of part, the spacing of fin is not less than 2mm, between too small
" water bridge " is formed away from the drop contact that can cause in adjacent fins, influences to exchange heat.
Further, the hydrophobic heat abstractor of described a kind of part, the heat transfer path have at least one cooling matchmaker
Left into the hydrophobic region with proceeding by the first port of heat exchange and at least one cooling matchmaker from the fin to tie
The second port of beam heat exchange, the second port is located at outside hydrophobic region, so under cooling condition, hydrophobic region temperature compared with
Low, fin surface easily forms drop, and is driven drop downwards using gravity.
Further, the hydrophobic heat abstractor of described a kind of part, the minimum water guide body in position on vertical direction
The edge of the horizontal both sides of the fin is extended to, to prevent drop from being flowed around the water guide body to non-hydrophobic area.
Further, the hydrophobic heat abstractor of described a kind of part, the hydrophobic region and the fin of the fin
Other non-hydrophobic areas be process by different materials.
Further, the hydrophobic heat abstractor of described a kind of part, the hydrophobic region and the fin on the fin
Other non-hydrophobic areas stagger in the horizontal direction a certain distance, to strengthen the disturbance to gas, improve heat exchange.
Further, the hydrophobic heat abstractor of described a kind of part, the fin is away from described heat transfer path one end
It is provided with backboard.On the one hand backboard adds the heat exchange area of fin, on the other hand to form one between adjacent fins
The closing space of vertical direction, form " chimney " effect.
Further, the hydrophobic heat abstractor of described a kind of part, be also equipped with the backboard backboard hydrophobic region and
Backboard baffle, principle are consistent with the hydrophobic region on fin and baffle.
The present invention has the advantages that：Under cooling condition, refrigerant initially enters the hydrophobic region of fin, near fin
Vapor in air is in the hydrophobic region surface condensation of fin, and because hydrophobic region surface contact angle is larger, condensing drip is in gravity
Driving is lower mobile and exports fin by water guide body.And the air outside fin is in cooled and after drying, density increase, along fin to
Lower flowing, condensed water is no longer separated out in the bottom of fin, fin surface does not have condensed water, improves the heat exchange efficiency of fin.
Brief description of the drawings
Fig. 1 (a) is a kind of hydrophobic heat abstractor schematic diagram of part of the present invention；
Fig. 1 (b) is a kind of hydrophobic heat abstractor left view of part of the present invention；
Fig. 2 (a) is segmented fin schematic diagram；
Fig. 2 (b) is segmented fin front view；
Fig. 3 (a) is the heat abstractor installation diagram with backboard；
Fig. 3 (b) is the heat abstractor schematic diagram with backboard；
Fig. 4 is backboard hydrophobic region and backboard water guide body on backboard.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Accompanying drawing 1 (a)-(b) show a kind of hydrophobic heat abstractor of part of the invention.As illustrated, heat abstractor 1 wraps
Containing multiple fins 2 and multiple heat transfer paths 3, fin 2 is mounted side by side vertically, is arranged at intervals between fin 2, and fin 2 is logical with heat transfer
Road 3 is in close contact by welding or expansion tube process.Heat abstractor 1 can be the fin-tube type heat exchanger of air-conditioning system, can also
It is radiator.Heat abstractor 1 and its fin 2 are along vertically to placement.Heat transfer path 3 can use heat-transfer pipe as shown in Figure 1,
The heat transfer path that can be taken other form, the rectangular heat conduction passage such as in plate-fin heat exchanger.Fin 2 includes hydrophobic region
11 and non-hydrophobic area 7, hydrophobic region 11 be located at the top in non-hydrophobic area 7.Hydrophobic coating is coated in the fin surface of hydrophobic region 11,
The contact angle of water droplet and fin hydrophobic region 11 is more than 90 °, and the vapor in air can be cold on fin in the form of dropwise condensation
Solidifying, dropwise condensation is known efficiency highest heat transfer type；On the other hand, due to hydrophobic coating be present, condensing droplet with
Fin surface contact angle is larger, and drop easily rolls under the driving of gravity along fin, will not be detained fin surface, hinders to change
Heat.
In the region lower end of hydrophobic region 11 of fin 2, in every side of each fin at least provided with a water guide body 14, lead
Water body 14 is located at hydrophobic region 11 and the intersection in non-hydrophobic area 7, and water guide body 14 extends to the horizontal level both sides of the edge of fin 2,
Water guide body 14 is horizontally disposed or is obliquely installed.Preferably, in the region of hydrophobic region 11 water guide body 14 top, can also set more
Individual drainage body 13, drainage body 13 are obliquely installed, and the condensation water drop on the surface of fin 2 on hydrophobic region 11 is led into water guide body
14.Alternatively, drainage 13, the incline direction of water guide body 14 are consistent.
Heat transfer path 3 there is at least one cooling matchmaker under cooling condition to enter carry out the of heat exchange in heat abstractor 1
Single port 4 and at least one cooling matchmaker under cooling condition are flowed out from the heat abstractor 1 to terminate the second port 5 of heat exchange, the
Two-port netwerk 5 is located at the lower section of first port 4.The heat transfer path 3 that first port 4 connects is passed through in hydrophobic region 11, and second port 5 connects
The heat transfer path 3 connect is located in non-hydrophobic area 7.The refrigerant for entering heat abstractor 1 from first port 4 is heated by the air rear temperature liter
Height, then flowed out from second port 5.Under cooling condition, the 2 outer air themperature of temperature opposite fins of refrigerant in heat transfer path 3
Lower, the heat transfer path 3 being connected with first port 4 is arranged in hydrophobic region 11, and now the refrigerant temperature in heat transfer path 3 is more
Low, with the air themperature that hydrophobic region 11 contacts by after rapid reduce, the vapor in air separates out after the condensation of hydrophobic region 11, empty
Air humidity degree reduces, and is advantageous to more effectively dehumidify to air.After air between fin 2 is cooled, density rise, close
Spend under the driving of difference and flow to non-hydrophobic area 7 from hydrophobic region 11.Refrigerant is after the heat exchange of hydrophobic region 11, into non-hydrophobic area 7
In heat transfer path 3, its temperature is relative to be raised, and now the air between the non-hydrophobic fin of area 7 in hydrophobic region 11 by except
It is wet, relatively dry, and also air themperature and the refrigerant temperature difference in heat transfer path 3 in non-hydrophobic area 7 are smaller, therefore do not have into one
The condensed water of step separates out.The non-hydrophobic fin of area 7 can keep drying.
In order to ensure that condensing drip can tumble from the surface of hydrophobic region 11, must be kept between adjacent fins 2 it is certain away from
From preventing condensing drip from forming " water bridge " between adjacent fins 2, have impact on heat transfer.Alternatively, between two adjacent fins 2
Spacing L >=2mm.
The condensed water on the inner fin surface of hydrophobic region 11 flows downward under the force of gravity, runs into after drainage body 13 along drainage
Body 13 flows to fin edges, and further flows out fin and drain.Remaining condensing drip is intercepted by water guide body 14, and flows to fin
Drain behind edge.Condensed water in the air of hydrophobic region 11 can be maintained at fin top, Bu Huiying by drainage body 13, water guide body 14
The non-hydrophobic surface of area 7 is rung, keeps the drying of the non-hydrophobic fin of area 7, preventing the whole surface of fin 2 has condensed water, ensures wing
Piece 2 has good heat transfer property.
Hydrophobic region 11 and the projected area of non-hydrophobic area 7 on each fin 2 should be according to refrigerant out temperature, heat abstractors
1 outer air themperature and humidity determines.Preferably, the ratio between the projected area in hydrophobic region 11 and non-hydrophobic area 7 is 3：7.
Hydrophobic region 11 can use the coating hydrophobic coating on the metal foundation of fin 2 to be formed.The technique skill of hydrophobic coating
Art mainly includes changing surface free energy and changes surface microstructure (surface roughness) two approach.Coat organosilicon and fluorine
Resin and corresponding modified resin can form hydrophobic surface, and organosilicon and its modified resin have alkyd resin, polyester tree
Fat, epoxy resin, acrylic resin, polyurethane resin and phenolic resin etc., fluororesin and its modified resin have Teflon series,
PVDF, FEVE and PVF etc..By that can form micron on the surface of hydrophobic region 11 the methods of vapour deposition, chemical etching or receive
Meter level column array, change the hydrophobicity on surface using surface tension.For the fin 2 of metal material, plating can also be used
Method formed hydrophobic surface, it is such as silver-plated in copper, aluminium, nickel, stainless steel surface chemistry.Multiple combinations method can also be used,
Hydrophobic surface is formed as first carried out chemical etching, then with surface modified resin.
In examples detailed above, what hydrophobic region 11 and non-hydrophobic area 7 were connected together, fin 2 is an entirety, by identical
Material is process.Alternatively, as shown in Fig. 2 (a)-(b), hydrophobic region 11 and non-hydrophobic area 7 can be the fins being segmented, hydrophobic
Area 11 and non-hydrophobic area 7 can be arranged to different materials.Preferably, non-hydrophobic area 7 is arranged to copper, to be led using copper is good
Hot property, hydrophobic region 11 are arranged to aluminium, and the contact angle of aluminium is relatively large, preferable with respect to copper hydrophobicity.Alternatively, the He of hydrophobic region 11
Non-hydrophobic area 7 all uses material based on copper, and metal plating or spraying are carried out to the copper surface of hydrophobic region 11, such as electrosilvering or
Person sprays aluminium, improves the hydrophobicity on the surface of hydrophobic region 11, and saves processing cost, prevents from carrying out electricity to the surface of whole fin 2
Plating or spraying.
As shown in Fig. 2 (b), after hydrophobic region 11 and non-hydrophobic area 7 separate, stagger in the horizontal direction and mutually a spacing
From, can so be formed segmentation fin, the disturbance to natural convection air between fin 2 can be strengthened, further enhance heat exchange.
As shown in Fig. 3 (a)-(b), backboard 15, backboard 15 can be set the other end away from heat transfer path 3 on fin 2
Underface set tank 16, on tank 16 set discharge outlet 17.Backboard 15 is closely joined together with fin 2, preferably
For welding.Backboard 15 is also closely joined together with the fin of hydrophobic region 11 and the fin of non-hydrophobic area 7 simultaneously.Drain body 13, water guide
Away from backboard 15, drainage body 13, the lower end of water guide body 14 and backboard 15 are close, that is, drain body 13, water guide body 14 for the upper end of body 14
Tilted to backboard 15, to enable the condensed water on hydrophobic region 11 to flow to backboard 15 along drainage body 13, water guide body 14, go forward side by side one
Step is flowed downwardly into tank 16 along backboard 15, is then flowed out by discharge outlet 17.Preferably, hydrophobic place is also done on the surface of backboard 15
Reason, to accelerate the exclusion of condensed water.The one side of backboard 15 have collected the condensed water of each fin hydrophobic region 11, and condensed water is led
Go out heat abstractor 1, another aspect backboard 15 also further increases the heat transfer area of fin 2, is the equal of the further of fin 2
Expand, in addition, backboard 15 contributes to the natural flowing in air in vertical direction with fin 2, further increase heat transfer efficiency.
As shown in figure 4, it is optional, using the above-mentioned identical principle of hydrophobic region 11, it is also provided with accordingly on the surface of backboard 15
Backboard hydrophobic region 18 and backboard water guide body 19, backboard water guide body 19 allow condensed water importing tank 16 to drain, allowed in backboard hydrophobic region
The condensed water separated out on 18 exports along backboard water guide body 19, reduces condensed water in region present on backboard 15, raising heat exchange.
For a person skilled in the art, technical scheme that can be as described above and design, further as changed
The structure type of fin 2 and the hydrophobic performance of hydrophobic region 11, to increase exchange capability of heat, improve the condensed water velocity of discharge, and own
These change and deformation should all belong within the protection domain of the claims in the present invention.
Claims (9)
1. a kind of hydrophobic heat abstractor of part, including heat transfer path and be arranged on the heat transfer path it is multiple vertically and side by side
The fin of setting, the fin are arranged at intervals, it is characterised in that：The fin top is provided with hydrophobic region, in the hydrophobic region
It is provided with least one water guide body.
A kind of 2. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：The fin it is described hydrophobic
Area's surface contact angle is more than 90 °.
A kind of 3. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：The spacing of fin is not less than
2mm。
A kind of 4. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：The heat transfer path has extremely
A few cooling matchmaker enters the hydrophobic region to proceed by the first port of heat exchange and at least one cooling matchmaker from the wing
Left on piece to terminate the second port of heat exchange, the second port is located at outside hydrophobic region.
A kind of 5. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：Vertical direction position is minimum
The water guide body extends to the both sides of the edge of the horizontal level of the fin.
A kind of 6. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：The fin it is described hydrophobic
Area and other non-hydrophobic areas of the fin are process by different materials.
A kind of 7. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：The fin it is described hydrophobic
Other non-hydrophobic areas of area and the fin stagger certain distance in the horizontal direction.
A kind of 8. hydrophobic heat abstractor of part according to claim 1, it is characterised in that：Away from institute on the fin
State heat transfer path one end and be provided with backboard.
A kind of 9. hydrophobic heat abstractor of part according to claim 8, it is characterised in that：The back of the body is provided with the backboard
Plate hydrophobic region and backboard baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202978.6A CN107782194A (en) | 2017-11-27 | 2017-11-27 | A kind of hydrophobic heat abstractor of part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202978.6A CN107782194A (en) | 2017-11-27 | 2017-11-27 | A kind of hydrophobic heat abstractor of part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107782194A true CN107782194A (en) | 2018-03-09 |
Family
ID=61430247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711202978.6A Withdrawn CN107782194A (en) | 2017-11-27 | 2017-11-27 | A kind of hydrophobic heat abstractor of part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107782194A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945553A (en) * | 2019-03-13 | 2019-06-28 | 广东美的制冷设备有限公司 | Heat exchanger and air conditioner |
| CN110940224A (en) * | 2018-09-21 | 2020-03-31 | 青岛海尔空调器有限总公司 | Heat exchanger |
| CN113028280A (en) * | 2021-03-19 | 2021-06-25 | 西安交通大学 | Air-temperature gasifier for preparing frost inhibition on bionic surface and frost inhibition method |
| CN113669892A (en) * | 2019-08-01 | 2021-11-19 | 浙江三花智能控制股份有限公司 | Heat exchanger |
-
2017
- 2017-11-27 CN CN201711202978.6A patent/CN107782194A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940224A (en) * | 2018-09-21 | 2020-03-31 | 青岛海尔空调器有限总公司 | Heat exchanger |
| CN109945553A (en) * | 2019-03-13 | 2019-06-28 | 广东美的制冷设备有限公司 | Heat exchanger and air conditioner |
| CN113669892A (en) * | 2019-08-01 | 2021-11-19 | 浙江三花智能控制股份有限公司 | Heat exchanger |
| CN113669892B (en) * | 2019-08-01 | 2022-10-14 | 浙江三花智能控制股份有限公司 | Heat exchanger |
| US11988464B2 (en) | 2019-08-01 | 2024-05-21 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Heat exchanger, method for making heat exchanger, and heat exchange system |
| CN113028280A (en) * | 2021-03-19 | 2021-06-25 | 西安交通大学 | Air-temperature gasifier for preparing frost inhibition on bionic surface and frost inhibition method |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180309 |
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