CN103743021B - New blower fan of discontinuous fin separate heat pipe and preparation method thereof - Google Patents
New blower fan of discontinuous fin separate heat pipe and preparation method thereof Download PDFInfo
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- CN103743021B CN103743021B CN201410031892.1A CN201410031892A CN103743021B CN 103743021 B CN103743021 B CN 103743021B CN 201410031892 A CN201410031892 A CN 201410031892A CN 103743021 B CN103743021 B CN 103743021B
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- 238000002474 experimental method Methods 0.000 claims description 6
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to new blower fan mechanical field, the new blower fan of a kind of discontinuous fin separate heat pipe specifically, it comprises condenser and evaporimeter, condenser is positioned at above evaporimeter, the upper end of condenser is connected by vapor uptake with upper end of evaporator, the lower end of condenser is connected by condensate descending with the lower end of evaporimeter, the exhaust outlet of condenser and the new wind air outlet of evaporimeter are equipped with axial flow blower, the fin of condenser and evaporimeter is the staggered two parts in left and right, and the more part of fin number is arranged at the side of air intake.By the two-part structure that fin design is become to be crisscross arranged, can the disorder of wind be produced in fin staggered place and slow down wind speed, increase turbulent heat transfer intensity on the one hand, thus enhanced heat exchange, finally make whole heat exchange element while not increasing metal consumption and heat exchange area, obtain better heat transfer effect; Reduce wind speed on the other hand thus increase heat-exchange time, because this increasing the heat exchange efficiency of air and working medium.
Description
Technical field
The present invention relates to new blower fan mechanical field, specifically new blower fan of a kind of discontinuous fin separate heat pipe and preparation method thereof.
Background technology
At present, room air pollution has become " the stealthy killer " of harm humans health.Research shows, more serious than outdoor air 2-5 times of the degree of room air pollution, can reach surprising 100 times under special circumstances.Expert detects discovery, and in room air, there is more than 500 kind of volatile organic matter, wherein carcinogenic substance just has kind more than 20, virus of curing the disease kind more than 200.A large amount of startling facts confirm, room air pollution has become " the stealthy killer " of harm humans health.According to statistics, the people of the nearly half in the whole world is in room air pollution, and indoor environmental pollution has caused the breathing problem of 35.7%, the chronic lung disease of 22% and the tracheitis of 15%, bronchitis and lung cancer.According to the data that Chinese indoor air chemical pollution center provides, the death toll that exceeds the quata that China causes due to room air pollution every year reaches 11.1 ten thousand people, and the outpatient service number that exceeds the quata can reach 4,300,000 person-times.Serious indoor environmental pollution not only causes damage to health of people, and causes huge economic loss, and only the economic loss that causes because of this respect of China is just up to 10,700,000,000 dollars nineteen ninety-five.
Point out according to " Indoor Air Quality standards ", everyone has 30m by need per hour
3fresh air.And the time of the normal about 80-90% of common people is spent in indoor.Along with the raising of material, economic level, air-conditioning enters huge numbers of families.In air after air conditioner process, anion extremely lacks, and anion to be human body requisite.Air in air-conditioned room is Reusability, and in room, the concentration of carbon dioxide can progressively raise, and cause environmental hypoxia, stuffy, pathogen easily grows breeding.
In view of the air pollution problem inside rooms of the sternness occurred, existing air clearing product can not solve severe indoor pollution problem from basic.Existing product is all air clearing product mostly, and this series products can only original air in clean room, but can not introduce new air outdoor, so fundamentally cannot solve the situation of room air pollution.The best approach solving indoor pollution problem is exactly that air exchange is carried out to improve IAQ in indoor introducing outdoor, and this is just starved of aeration device.
And the fin position of existing heat exchanger is continuous and continual, for the heat pipe heat exchanging component of the new blower fan of continuous fin, heat exchange efficiency reduces along with the reduction of the temperature difference, so maximum at porch heat exchange efficiency.The heat exchange efficiency of such heat exchange element can reduce, and heat transfer effect is bad.
Summary of the invention
According to above-mentioned weak point, the object of this invention is to provide a kind of heat exchange efficiency high, the new blower fan of discontinuous fin separate heat pipe of good effect of heat exchange.
For achieving the above object, technical scheme of the present invention is: the new blower fan of a kind of discontinuous fin separate heat pipe, it comprises condenser and evaporimeter, condenser is positioned at above evaporimeter, the upper end of condenser is connected by vapor uptake with upper end of evaporator, the lower end of condenser is connected by condensate descending with the lower end of evaporimeter, the exhaust outlet of condenser and the new wind air outlet of evaporimeter are equipped with axial flow blower, the fin of condenser and evaporimeter is the staggered two parts in left and right, two parts fin passes through moulding by casting, and be welded into heat pipe monomer by aluminium flake, wherein, the more part of fin number is arranged at the side of air intake.
Preferably: the fin of described evaporimeter and condenser, adopt structuring optimized calculation method, its intervening portion computing formula is
wherein, y is the distance of air intake porch to fin staggered place, m; D is the width between two fins, m; Δ p is pressure differential, Pa; α is thermal diffusivity, m2/s; μ is dynamic viscosity, Pas.
Preferably: described new wind air outlet place is provided with air processor.
Preferably: described air processor comprises be arranged side by side two independently air-treatment layers, and one of them air-treatment layer is provided with except wet granular, and another air-treatment layer is provided with purification particle.
Preferably: described air-treatment layer is made up of some little cylinder moulds, wherein, the minimum square hole catercorner length of the grid of little cylinder mould is less than the diameter of corresponding particle.
Preferably: the outside of two described air-treatment layers is provided with draw and insert-type lid end.
The present invention also provides the preparation method of the new blower fan of a kind of discontinuous fin separate heat pipe, and its operating procedure is as follows,
1, the material making heat pipe is all done oxidation processes;
2, cleaning makes heat pipe material requested, thoroughly removes surface solid particle, oil stain and oxide;
3, each material is welded;
4, monomer heat pipe is hunted leak;
5, monomer heat pipe is connected into hot-pipe system, carry out system leak detection;
6, heat pipe vacuumizes, and does pressure and keeps experiment;
7, working medium is filled with.
Preferably: dry by vapours inside and outside for pipe and seal after the heat pipe cleaning after described welding.
Preferably: the leak hunting method of described monomer heat pipe be by welding after heat pipe monomer metallic plate to clamp and machinery is fixing, put into water, connects the adapter of heat pipe one end with pressuring machine, other end adapter good seal, then pressurizeing is no more than 2 times of heat pipe pressure-bearing; If there is bubble to produce in water, then represents that welded seal is bad, to emitting bubble place to mark, and sealing with encapsulants such as silica gel; If do not have bubble to produce, then represent that heat pipe is air tight; Wherein, water temperature is 20-25 DEG C.
Preferably: the method for described hot-pipe system leak detection is tightly welded with house steward for respectively being taken over by heat pipe, condenser connects three-dimensional joint, one end is connected with vacuumizing to take over, and vacuumizes adapter and is connected with a vacuum valve, a termination vacuum meter on valve, another termination vavuum pump; The upper connecting tube of evaporimeter also connects vacuum meter; Total tube connector heat insulation layer encases, and system connects rear vavuum pump and takes out required vacuum, screws vacuum valve valve immediately, within every 5 hours, observes vacuum meter reading; If more than 36 hours keep pressure constant, then represent air tight; Otherwise, then represent gas leakage, repeat hot-pipe system leak detection experiment.
Beneficial effect of the present invention is: by the two-part structure becoming to be crisscross arranged by fin design, can the disorder of wind be produced in fin staggered place and slow down wind speed, increase turbulent heat transfer intensity on the one hand, thus enhanced heat exchange, finally make whole heat exchange element while not increasing metal consumption and heat exchange area, obtain better heat transfer effect; Reduce wind speed on the other hand thus increase heat-exchange time, because this increasing the heat exchange efficiency of air and working medium.At the draw and insert-type air processor that new wind air outlet is settled, air processor comprises dehumidifying and two functions that purify air.The design of draw and insert-type can complete the replacing cleaning of air processor simply and easily.Air-treatment obviously can reduce air humidity and purify air, and has remarkable result to the lifting of IAQ.Especially in the winter time, indoor hot air can be flowed through evaporator section, outdoor cold wind flows through condensation segment, do not upgrade when not changing indoor temperature and improve room air.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is schematic perspective view of the present invention.
Fig. 3 is the structural representation of fin in condenser of the present invention.
Fig. 4 is the structural representation of fin in evaporimeter of the present invention.
Fig. 5 is the assembled state figure of air processor of the present invention.
Fig. 6 is the disassembled state figure of air processor of the present invention.
In figure, 1-condenser; 2-evaporimeter; 3-vapor uptake; 4-condensate descending; 5-axial flow blower; 6-exhaust outlet; The new wind air outlet of 7-; 8-covers end; 9-air-treatment layer; 10-fin; 11-air processor.
Detailed description of the invention
The new blower fan of the discontinuous fin of one as shown in figures 1 to 6 separate heat pipe, it comprises condenser 1 and evaporimeter 2, condenser 1 is positioned at above evaporimeter 2, the upper end of condenser 1 is connected by vapor uptake 3 with the upper end of evaporimeter 2, the lower end of condenser 1 is connected by condensate descending 4 with the lower end of evaporimeter 2, the exhaust outlet 6 of condenser 1 and the new wind air outlet 7 of evaporimeter 2 are equipped with axial flow blower 5, the fin 10 of condenser 1 and evaporimeter 2 is the staggered two parts in left and right, two parts fin 10 by moulding by casting, and is welded into heat pipe monomer by aluminium flake.Wherein, the part that fin number is more is arranged at the side of air intake.Preferably, the staggered degree of two parts fin is 1/2nd positions that a part of fin is positioned at the adjacent two panels spacing of fin of another part.Fin is crisscross arranged, and produces the disorder of wind and slow down wind speed in staggered place, increases turbulent heat transfer intensity on the one hand; Reduce wind speed on the other hand thus increase heat-exchange time, because this increasing the heat exchange efficiency of air and working medium.New wind air outlet 7 place is provided with air processor 11, and air processor 11 comprises two the air-treatment layers 9 be arranged side by side, and one of them air-treatment layer is provided with except wet granular, and another air-treatment layer is provided with purification particle.Air-treatment layer 9 is made up of some little cylinder moulds, and wherein, the minimum square hole catercorner length of the grid of little cylinder mould is less than the diameter of corresponding particle.Wherein, except wet granular is silica gel particle, can moist gas in absorbed air, its effect is especially highlighted for plum rain season.Purification particle is bamboo charcoal particle, can the harmful substance such as formaldehyde, sulfur dioxide in absorbed air, and can discharge natural mineral matter, can also damping antibacterial, deodorizing fungus-proof, purifies air.The both sides of two air-treatment layers are provided with draw and insert-type lid end 8, are convenient to dismounting with the replacing carrying out air-treating material.
Complete equipment is made up of aluminium, and heat pipe discontinuous fin used is that mould fills and forms, and be an entirety, switching performance is good, and therefore heat exchange thermal resistance is little, and heat exchange property is good, can alleviate the weight of equipment.Welded by aluminum strip in the middle of two-part fin heat pipe system.Because aluminium can generate incoagulable gas--hydrogen with water reaction, therefore material of the present invention is all through oxidation processes.Consider the many factors such as applicability and stability of phase-change heat-exchange ability, working medium, working medium is defined as distilled water.
Its intervening portion computing formula of the fin of evaporimeter and condenser is
wherein, y is the distance of air intake porch to fin staggered place, m; D is the width between two fins, m; Δ p is pressure differential, Pa; α is thermal diffusivity, m
2/ s; μ is dynamic viscosity, Pas.
The present invention also provides the preparation method of the new blower fan of a kind of separate heat pipe, and its operating procedure is as follows: 1, the material making heat pipe is all done oxidation processes; 2, cleaning makes heat pipe material requested, thoroughly removes surface solid particle, oil stain and oxide; 3, each material is welded; 4, monomer heat pipe is hunted leak; 5, monomer heat pipe is connected into hot-pipe system, carry out system leak detection; 6, heat pipe vacuumizes, and does pressure and keeps experiment; 7, working medium is filled with.
The manufacturing process of heat pipe should be noted that it is that the compatibility of working medium and tube body of heat pipe and heat pipe pressure keep.In order to ensure that tube body of heat pipe does not react with working medium, heat pipe makes material used and has all done oxidation processes, and opposite heat tube will manage inside and outside oven dry, preferred 300K constant temp. drying box by vapours after cleaning again after welding, and paper using sealing, prevent internal residual from welding thing.
Evaporating temperature >=30 DEG C of heat pipe model machine work, condensation temperature≤27 DEG C, namely the minimum operational difference of heat pipe is 3 DEG C, how to ensure that heat pipe can evaporate and is the key of prototype fabrication the temperature condensation of≤27 DEG C under the temperature conditions of >=30 DEG C.Wherein topmost is exactly ensure that heat pipe intraductal pressure keeps the pressure of designing requirement.Evaporating temperature is lower, and the vacuum needed for inside heat pipe is higher.Table look-up the pressure of water needed for 30 DEG C of evaporations is 0.04865 × 10
5pa, the pressure needed for 27 DEG C of evaporations is 0.0423 × 10
5pa, namely heat pipe evaporating pressure need remain on 0.0423 × 10
5pa-0.04865 × 10
5pa.
In heat pipe manufacturing process, need to do pressurization leakage detection work for twice:
1, the leak detection of monomer heat pipe: its method be by welding after heat pipe monomer metallic plate to clamp and machinery is fixing, put into water, connects the adapter of heat pipe one end with pressuring machine, other end adapter good seal, then pressurizeing is no more than 2 times of heat pipe pressure-bearing; If there is bubble to produce in water, then represents that welded seal is bad, to emitting bubble place to mark, and sealing with encapsulants such as silica gel; If do not have bubble to produce, then represent that heat pipe is air tight.Wherein, water temperature is 20-25 DEG C.
2, the leak detection of hot-pipe system: its method is tightly welded with house steward for respectively to be taken over by heat pipe, condenser connects three-dimensional joint, one end is connected with vacuumizing to take over, and vacuumizes to take over to be connected with a vacuum valve, a termination vacuum meter on valve, another termination vavuum pump; The upper connecting tube of evaporimeter also connects vacuum meter; Total tube connector heat insulation layer encases, and system connects rear vavuum pump and takes out required vacuum, screws vacuum valve valve immediately, within every 5 hours, observes vacuum meter reading; If more than 36 hours keep pressure constant, then represent air tight; Otherwise, then represent gas leakage, repeat hot-pipe system leak detection experiment.
Illustrate for a new blower fan of discontinuous fin separate heat pipe.
Under air is in an atmospheric pressure, setting indoor air temperature is 24 DEG C, and now corresponding air thermal diffusion coefficient is 2.18 × 10
-5m
2/ s, dynamic viscosity is 1.8437 × 10
-5pas; Outside air temperature is 32 DEG C, and now corresponding air thermal diffusion coefficient is 2.289 × 10
-5m
2/ s, dynamic viscosity is 1.8829 × 10
-5pas.Between evaporimeter and the fin of condenser, width is identical, is 2.26 × 10
-3m, it is 100m that length is 0.39m axial flow blower flow
3/ h, corresponding pressure difference is 8Pa.The air physical property corresponding due to different temperatures is different, so evaporimeter is not identical with the intervening portion of condenser, obtain by formulae discovery, condenser intervening portion y is 0.097m; And evaporimeter intervening portion y is 0.093m.
Heat recovery efficiency ε formula is:
In formula, q
actactual heat exchange amount, q
maxmaximum heat exchange amount, T
einfor evaporator temperature, T
eoutfor evaporator outlet temperature, T
outfor air outdoor temperature, T
infor air indoor temperature.Heat recovery efficiency equals the ratio of actual heat exchange amount and maximum heat exchange amount, because the flow of air is identical with specific heat capacity, so the ratio of actual heat exchange amount and maximum heat exchange amount equals the ratio of the evaporator inlet-outlet temperature difference and indoor/outdoor temperature-difference.Above-mentioned new blower fan, keeps indoor temperature 24 DEG C in experimentation, outdoor temperature 32 DEG C, and its evaporimeter intervening portion is 0.093m, and condenser intervening portion is 0.097m, and heat pipe liquid filled ratio is 40%.Obtaining the evaporator inlet-outlet temperature difference by temperature sensor is 6.6 DEG C, and indoor/outdoor temperature-difference is 8 DEG C, and the heat recovery efficiency being obtained the now new blower fan of discontinuous fin separate heat pipe by heat recovery efficiency formula is 82.5%.The heat recovery rate of the new blower fan of this discontinuous fin separate heat pipe is high.
Claims (9)
1. the new blower fan of discontinuous fin separate heat pipe, it comprises condenser (1) and evaporimeter (2), condenser (1) is positioned at evaporimeter (2) top, the upper end of condenser (1) is connected by vapor uptake (3) with the upper end of evaporimeter (2), the lower end of condenser (1) is connected by condensate descending (4) with the lower end of evaporimeter (2), the exhaust outlet (6) of condenser (1) and the new wind air outlet (7) of evaporimeter (2) are equipped with axial flow blower (5), it is characterized in that: the fin (10) of described condenser (1) and evaporimeter (2) is the staggered two parts in left and right, two parts fin (10) passes through moulding by casting, and be welded into heat pipe monomer by aluminium flake, wherein, the more part of fin number is arranged at the side of air intake, its intervening portion computing formula of fin (10) of described evaporimeter and condenser is
wherein, y is the distance of air intake porch to fin staggered place, m, D is the width between two fins, m, Δ p is pressure differential, Pa, α is thermal diffusivity, m
2/ s, μ is dynamic viscosity, Pas.
2. according to the new blower fan of discontinuous fin separate heat pipe according to claim 1, it is characterized in that: described new wind air outlet (7) place is provided with air processor (11).
3. according to the new blower fan of discontinuous fin separate heat pipe according to claim 2, it is characterized in that: described air processor (11) comprises be arranged side by side two independently air-treatment layers (9), one of them air-treatment layer is provided with except wet granular, and another air-treatment layer is provided with purification particle.
4. according to the new blower fan of discontinuous fin separate heat pipe according to claim 3, it is characterized in that: described air-treatment layer (9) is made up of some little cylinder moulds, wherein, the minimum square hole catercorner length of the grid of little cylinder mould is less than the diameter of corresponding particle.
5. according to the new blower fan of discontinuous fin separate heat pipe described in Claims 2 or 3, it is characterized in that: the outside of two described air-treatment layers (9) is provided with draw and insert-type lid end (8).
6. according to the preparation method of the new blower fan of discontinuous fin separate heat pipe according to claim 1, it is characterized in that: its operating procedure is as follows,
(1) material making heat pipe is all done oxidation processes;
(2) cleaning makes heat pipe material requested, thoroughly removes surface solid particle, oil stain and oxide;
(3) each material is welded;
(4) monomer heat pipe is hunted leak;
(5) monomer heat pipe is connected into hot-pipe system, carry out system leak detection;
(6) heat pipe vacuumizes, and does pressure and keeps experiment;
(7) working medium is filled with.
7. according to the preparation method of the new blower fan of discontinuous fin separate heat pipe according to claim 6, it is characterized in that: dry by vapours inside and outside for pipe and seal after the heat pipe cleaning after described welding.
8. according to the preparation method of the new blower fan of discontinuous fin separate heat pipe according to claim 6, it is characterized in that: the leak hunting method of described monomer heat pipe be by welding after heat pipe monomer metallic plate to clamp and machinery is fixing, put into water, the adapter of heat pipe one end is connected with pressuring machine, other end adapter good seal, then pressurization is no more than 2 times of heat pipe pressure-bearing; If there is bubble to produce in water, then represent that welded seal is bad, to emitting bubble place to mark, and with silica gel sealing; If do not have bubble to produce, then represent that heat pipe is air tight; Wherein, water temperature is 20-25 DEG C.
9. according to the preparation method of the new blower fan of discontinuous fin separate heat pipe according to claim 6, it is characterized in that: the method for described hot-pipe system leak detection is tightly welded with house steward for respectively being taken over by heat pipe, condenser connects three-dimensional joint, one end is connected with vacuumizing to take over, vacuumize adapter to be connected with a vacuum valve, a termination vacuum meter on valve, another termination vavuum pump; The upper connecting tube of evaporimeter also connects vacuum meter; Total tube connector heat insulation layer encases, and system connects rear vavuum pump and takes out required vacuum, screws vacuum valve valve immediately, within every 5 hours, observes vacuum meter reading; If more than 36 hours keep pressure constant, then represent air tight; Otherwise, then represent gas leakage, repeat hot-pipe system leak detection experiment.
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|---|---|---|---|
| CN201410031892.1A CN103743021B (en) | 2014-01-23 | 2014-01-23 | New blower fan of discontinuous fin separate heat pipe and preparation method thereof |
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|---|---|---|---|
| CN201410031892.1A CN103743021B (en) | 2014-01-23 | 2014-01-23 | New blower fan of discontinuous fin separate heat pipe and preparation method thereof |
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| CN103743021B true CN103743021B (en) | 2016-01-13 |
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| CN106016502A (en) * | 2016-07-29 | 2016-10-12 | 江苏赛诺浦节能科技有限公司 | Refrigeration and fresh air integration type outdoor unit special for water-cooled fungus mushroom house |
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| DE2809143A1 (en) * | 1978-02-20 | 1979-08-23 | Gea Luftkuehler Happel Gmbh | FIBER TUBE HEAT EXCHANGER |
| US4300630A (en) * | 1977-01-28 | 1981-11-17 | Trojani Benito L | Finned metal tube and method for making the same |
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| CN202204076U (en) * | 2011-07-14 | 2012-04-25 | 北京网电盈科科技发展有限公司 | Heat recovery air conditioning cabinet applicable to animal room |
| CN202209737U (en) * | 2011-07-14 | 2012-05-02 | 北京网电盈科科技发展有限公司 | Fresh air handling unit having natural heat recovery function |
| CN102620453A (en) * | 2012-04-09 | 2012-08-01 | 中国科学院工程热物理研究所 | Unit heat pipe heat absorber and manufacturing method thereof |
| CN102628655A (en) * | 2012-03-22 | 2012-08-08 | 中国科学院工程热物理研究所 | Pulsating heat pipe heat-expanding plate and manufacturing method thereof |
| CN203231431U (en) * | 2013-05-20 | 2013-10-09 | 苏州昆拓热控系统股份有限公司 | Machine cabinet air conditioner |
| CN203329589U (en) * | 2013-07-01 | 2013-12-11 | 廖勇 | Clamshell-type indoor dehumidifier |
| CN203704220U (en) * | 2014-01-23 | 2014-07-09 | 中国石油大学(华东) | Discontinuous-fin separating type heat tube fresh air machine |
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| JP3612826B2 (en) * | 1995-11-29 | 2005-01-19 | 三菱電機株式会社 | Heat exchange element |
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| US3421578A (en) * | 1966-12-22 | 1969-01-14 | Louis L Marton | Heat dissipator |
| US4300630A (en) * | 1977-01-28 | 1981-11-17 | Trojani Benito L | Finned metal tube and method for making the same |
| DE2809143A1 (en) * | 1978-02-20 | 1979-08-23 | Gea Luftkuehler Happel Gmbh | FIBER TUBE HEAT EXCHANGER |
| CN201255596Y (en) * | 2008-08-11 | 2009-06-10 | 丹腾空气系统(苏州)有限公司 | Isolation type hot pipe heat exchanger |
| CN202204076U (en) * | 2011-07-14 | 2012-04-25 | 北京网电盈科科技发展有限公司 | Heat recovery air conditioning cabinet applicable to animal room |
| CN202209737U (en) * | 2011-07-14 | 2012-05-02 | 北京网电盈科科技发展有限公司 | Fresh air handling unit having natural heat recovery function |
| CN102628655A (en) * | 2012-03-22 | 2012-08-08 | 中国科学院工程热物理研究所 | Pulsating heat pipe heat-expanding plate and manufacturing method thereof |
| CN102620453A (en) * | 2012-04-09 | 2012-08-01 | 中国科学院工程热物理研究所 | Unit heat pipe heat absorber and manufacturing method thereof |
| CN203231431U (en) * | 2013-05-20 | 2013-10-09 | 苏州昆拓热控系统股份有限公司 | Machine cabinet air conditioner |
| CN203329589U (en) * | 2013-07-01 | 2013-12-11 | 廖勇 | Clamshell-type indoor dehumidifier |
| CN203704220U (en) * | 2014-01-23 | 2014-07-09 | 中国石油大学(华东) | Discontinuous-fin separating type heat tube fresh air machine |
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|---|---|
| CN103743021A (en) | 2014-04-23 |
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