CN109323608A - A kind of novel unidirectional heat transfer heat exchanger - Google Patents
A kind of novel unidirectional heat transfer heat exchanger Download PDFInfo
- Publication number
- CN109323608A CN109323608A CN201710640663.3A CN201710640663A CN109323608A CN 109323608 A CN109323608 A CN 109323608A CN 201710640663 A CN201710640663 A CN 201710640663A CN 109323608 A CN109323608 A CN 109323608A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- heat
- unidirectional
- wall surface
- fin
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
- H05K7/20418—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing the radiating structures being additional and fastened onto the housing
Abstract
The present invention relates to a kind of novel unidirectional heat transfer heat exchangers, specially a kind of finned heat exchanger with unidirectional heat transmission function, it mainly include heat exchanger fin, heat exchanger body, unidirectional thermal switch (includes capillary materials, cavity, wall surface), ontology forms in heat exchanger inner fin and heat exchanger, heat exchanger body passes through the interface of confined space, and it is formed and is sealed with the interface of confined space, heat exchanger fin is in the outside of confined space at this time, heat is exchanged with external cooling medium, remaining component includes unidirectional thermal switch, ontology in heat exchanger, heat exchanger inner fin is in the inside of confined space, cooled object can directly transfer heat to ontology in heat exchanger, or heat is transferred heat to by heat exchanger inner fin by ontology in heat exchanger by cooling media, pass through unidirectional thermal switch again, it heat exchanger body and changes Hot device fin is dispersed into cooling medium.Can heat exchanger can be widely applied to refrigeration or electrical cooling field.
Description
Technical field
It is specially a kind of to be changed with the finned of unidirectional heat transmission function the present invention relates to a kind of novel unidirectional heat transfer heat exchanger
Hot device can be widely applied to refrigeration or electrical cooling field.
Background technique
When electronic component or equipment in confined space work normally, heat is inevitably given out, if
The heat that work generates is not dispersed into outside confined space, the temperature in space can be higher and higher.Due to being confined space,
The exchange of air can not be carried out, so cooling major way is using compressor refrigeration at present, the problem of which maximum is
Energy consumption is high, equipment life is short, and compressor needs frequency to start, and the temperature of powerless heat source is how high, requires starting compression
Machine.If the temperature of the outer air of confined space is relatively low, can be by way of heat transfer by the heat derives in sealing space
Into external air, to avoid the starting of compressor refrigeration system.
Along with the fast development of China's informationization industry and digital Construction, the construction speed of data center is greatly
Fastly, quantity increases sharply, and increasingly becomes energy consumption rich and influential family.Data center is enclosed in for stable operation, all devices needs
In one clean room.Develop the call of green economy in response to national energy conservation and emission reduction, the energy-saving and emission-reduction of data center are more next
More it is taken seriously.Various types of data storage, exchange and processing equipment have calorific value big in data center, and calorific value is continual and steady
The characteristics of, general communications equipment room air-conditioning thermic load reaches 300 watts/square.In order to maintain equipment in data center to operate normally institute
The temperature and humidity environment needed, data center's air-conditioning system annual full-time must provide required cooling capacity for data center.Therefore,
The energy consumption of data center's air-conditioning system occupies quite a few ratio in data center's total energy consumption.According to statistics, data center is empty
The electric energy of adjusting system consumption can account for the 40% to 60% of data center's total power consumption.At present, the annual power consumption of China's telecommunications industry
It is more than 200 hundred million degree, wherein base station air conditioner year power consumption is as high as 7,000,000,000 degree.Therefore, the energy conservation of data center's air-conditioning system is several
According to the key point of center energy-saving emission reduction.In winter and transition season, if can reasonable employment natural cooling source be that computer room cools down,
The runing time of former air-conditioning compressor will shorten, and save a large amount of electric energy.
Along with China's electric power and railway electrification, intelligentized fast development, to the stability of control system, reliable
Property proposes very high requirement, while going deep into energy conservation and environmental protection measure, electric system, the railway system energy-saving and emission-reduction index
It is required that higher and higher, electric power electrical apparatus, the stable operation requirement of Railway Electric equipment and energy-saving and emission-reduction requirement are higher and higher.Electricity
One most important equipment of gasification first is that electrical outdoor gas control cabinet, due to being exposed to the sun under the sun outdoors, due to having as open air
The requirement such as insulative water-proof insect prevention, therefore electrical control cabinet is often designed to completely cut off with outside air, cooling relies primarily on machine
Cabinet air-conditioning.Since electrical control cabinet is under sunlight, even if outside air temperature is lower, due to solar radiation and internal component
Fever, in-cabinet temperature increase rapidly, and intelligence is cooled down by cabinet air conditioner to cabinet at this time, therefore air-conditioning is chronically at work shape
State, high failure rate, energy consumption are high.The operating temperature of usual electrical control cabinet is at 35 degree or so, if outdoor air themperature is lower than
It 35 degree, can be rejected heat to by the way of heat exchange in external air.
The modes of object in two kinds of common cooling confined spaces shown in Fig. 1, Fig. 1 a be by cooled object 4 directly with
Heat exchanger body 2 fits closely together, and heat exchanger body 2 passes through the interface of confined space, and heat exchanger fin 1 is located at confined air
Between it is outer, exchange heat with external cooling medium 3, the heat that cooled object 4 generates be dispersed into cooling medium 3.Heat exchange
Device ontology 2 and heat exchanger fin 1 can be the high thermal conductivity materials such as aluminium, copper and be made, cooling medium 3 can be external air,
Water, oil etc.,.Fig. 1 b is that cooled object 4 is placed in cooling media 5, and the heat that cooled object 4 generates passes through cooling media
5 carry out heat exchange with heat exchanger inner fin 10, then are dispersed into external cooling by heat exchanger body 2 and heat exchanger fin 1 and are situated between
In matter 3.
But for above-mentioned application, there is a fatal defect to be exactly, when confined space cooling must use compression mechanism
When cold, temperature is low in confined space, and outdoor temperature is high.And traditional heat exchanger, heat transfer be it is two-way, at this time may be
The heat of external high temperature is imported into confined space, to increase the load of air-conditioning, reduces refrigeration effect, section cannot be achieved instead
The purpose of energy.Therefore, heat exchanger used at this time, needs it to have the function of unidirectionally conducting heat.
The present invention is directed to the cooling operating characteristic of above-mentioned confined space, proposes a kind of novel unidirectional heat transfer heat exchanger, is used for
The cooling of confined space, when external air temperature is lower than the temperature in confined space, heat exports to inside confined space
Outside confined space, when external air temperature is higher than the temperature in confined space, external heat cannot imported into confined space
It is interior.
Summary of the invention
Of the invention is the improvement to existing confined space (such as data center and electrical control cabinet) type of cooling, using one
Kind have unidirectional heat transmission function heat exchanger, using confined space outside lower temperature, realize heat led out of confined space
Out to outside space, while cooling capacity leaks when also can effectively prevent compressor refrigeration.The heat exchanger mainly include heat exchanger fin,
Ontology group in heat exchanger body, unidirectional thermal switch (including capillary materials, cavity, wall surface), heat exchanger inner fin and heat exchanger
At heat exchanger body passes through the interface of confined space, and is formed and sealed with the interface of confined space, and heat exchanger fin exists at this time
The outside of confined space exchange heat with external cooling medium, remaining component includes unidirectional thermal switch, in heat exchanger
Body, heat exchanger inner fin are in the inside of confined space, and cooled object can be transferred heat to directly in heat exchanger originally
Body, or heat is transferred heat to by heat exchanger inner fin by ontology in heat exchanger by cooling media, then by unidirectional
Thermal switch, heat exchanger body and heat exchanger fin are dispersed into cooling medium.
The unidirectionally thin material of thermal switch hairiness, cavity and wall surface composition, wall surface is mainly metal material, such as stainless steel tube, copper
Perhaps the cross sectional shape such as aluminum pipe can be round, rectangular or other shapes to pipe.Capillary materials are mainly wire mesh or burning
Metal powder is tied, the function of capillarity is realized, is covered on the side of wall surface inner surface.Rest part is all empty inside wall surface
Chamber.Punching has a certain amount of working medium inside wall surface, it is generally the case that working medium is stored in capillary since capillarity is most of with liquid
Inside material, when the outer wall of capillary materials is heated, the other side that capillary materials reach cavity is left in working medium gasification, due to
The other side is cooling surface, and the working medium of gasification flows to the bottom of wall surface after being condensed, then by capillary action is distributed in capillary materials
Heat, is taken to the smooth side of wall surface by face, in this way week and the work returned from wall surface capillary side.When capillary side is cooling surface
When temperature is low, liquid lock can not be gasified inside capillary materials, to can not achieve the transfer of heat, therefore heat can only be from
Capillary side is transferred to smooth side, realizes the unidirectional transfer of heat.
The present invention has the advantages that (1) uses the thermal switch of capillary structure, the list of heat in confined space may be implemented
To heat transfer, when the coolant temperature outside confined space is low, the conduction of heat from inside to outside can be realized using the heat exchanger,
When compression mechanism is cold-started, and temperature is lower in confined space, the loss of cooling capacity can be effectively prevented；(2) structure is simple, only
It needs to increase thermal switch on former heat exchanger, increase ontology and fin in heat exchanger and can be realized.
Detailed description of the invention
Fig. 1 .a is the directly cooling schematic diagram of existing finned heat exchanger
Fig. 1 .b is the schematic diagram that existing finned heat exchanger cools down indirectly
Fig. 2 .a is a kind of directly cooling schematic diagram of novel unidirectional heat transfer heat exchanger of the invention
Fig. 2 .b is the schematic diagram that a kind of novel unidirectional heat transfer heat exchanger of the invention cools down indirectly
Fig. 3 is the structural schematic diagram of unidirectional thermal switch in a kind of novel unidirectional heat transfer heat exchanger of the invention
Symbol description in figure:
1- cooling medium 2- heat exchanger fin 3- heat exchanger body 4- is cooled object 5- cooling media
The unidirectional thermal switch 7- capillary materials 8- cavity 9- wall surface 10- heat exchanger inner fin 11- heat exchange of 6-
Ontology in device.
Specific embodiment
As shown in Fig. 2, the novel unidirectional heat transfer heat exchanger of one kind of the present invention mainly includes heat exchanger fin 1 ,-heat exchange
Ontology 11 in device ontology 2, unidirectional thermal switch (including capillary materials 7, cavity 8, wall surface 9), heat exchanger inner fin 10 and heat exchanger
Composition.
As shown in figure 3, unidirectionally the thin material 7 of thermal switch hairiness, cavity 8 and wall surface 9 form, 9 face of wall is mainly metal pipe material,
Perhaps aluminum pipe cross sectional shape can be round, rectangular or other shapes for such as stainless steel tube, copper pipe.Capillary materials 7 are mainly
Wire mesh or sintering metal powder realize the function of capillarity, are covered on the side of 9 inner surface of wall surface.Inside wall surface 9
In addition to capillary materials, rest part is all cavity 8.Punching has a certain amount of working medium, including but not limited to water, fluorine inside wall surface 9
The single working medium such as Leon, acetone, ethylene, alcohol, ether, nano-fluid or mixture.Under normal conditions, working medium is due to capillary work
7 the inside of capillary materials is stored in liquid with major part, when the outer wall of capillary materials 7 is heated, hair is left in working medium gasification
Thin material 7 reaches the other side of cavity 8, since the other side is cooling surface, the bottom of runner wall surface after the working medium of gasification is condensed,
The work by capillary action for being distributed to 7 the inside of capillary materials, in this way week and returning again, takes heat to wall from wall surface capillary side
The smooth side in face.When capillary side is low for cold-boundary temperature, and smooth side is that face temperatures are high, liquid can not be locked by gasification
Inside capillary materials, to can not achieve the transfer of heat, therefore heat can only be transferred to smooth side from capillary side, heat is realized
The unidirectional transfer of amount.
When being cooled down using heat exchanger of the invention to confined space, heat exchanger body 2 passes through the interface of confined space,
And formed and sealed with the interface of confined space, heat exchanger fin 1 is in the outside of confined space at this time, with external cooling medium 3
Exchange heat, remaining component include unidirectional thermal switch (including capillary materials 7, cavity 8 and wall surface 9), ontology 11 in heat exchanger,
Heat exchanger inner fin 10 is in the inside of confined space, and cooled object 4 can be transferred heat to directly in heat exchanger originally
Body 2, or heat is transferred heat to by heat exchanger inner fin 10 by ontology 11 in heat exchanger by cooling media 5, then lead to
It crosses unidirectional thermal switch (including capillary materials 7, cavity 8 and wall surface 9), heat exchanger body 2 and heat exchanger fin 1 and is dispersed into cooling Jie
In matter 3.In order to improve heat exchange efficiency, avoided in 9 and heat exchanger body 2 and heat exchanger between ontology 11 in unidirectional thermal switch
Thermal connection, can be connected by the way of the heat-conducting silicone grease of high thermal conductivity or diffusion welding (DW), heat exchanger fin 1 and heat exchanger sheet
Integrated structure is used between body 2, ontology 11 also uses integrated structure in heat exchanger inner fin 10 and heat exchanger, reduces
Thermal resistance improves heat exchange efficiency, and material generallys use the metal materials such as the high copper of thermal conductivity, aluminium.Due to the function of unidirectional thermal switch
Realize the principle needed using capillary siphon, but capillary force is limited, and is required for the heat exchanger of different area,
Multiple unidirectional thermal switch can be used in heat exchanger body 2 and heat exchanger between ontology 11, each unidirectional thermal switch is arranged side by side,
Very little can be stayed between the two or is left no gaps.If 9 cross section of wall surface of unidirectional thermal switch is round or other structures,
The insert structure for needing to process same shape on ontology 11 in heat exchanger body 3 and heat exchanger increases unidirectional thermal switch and changes
Heat exchange area in hot device ontology 2 and heat exchanger between ontology 11 reduces thermal contact resistance, improves the performance of heat exchanger.In order to
A kind of performance of novel unidirectional heat transfer heat exchanger of the present invention is improved, be cooled object 4, cooling media 5 and heat exchanger inner fin 10
Between heat exchange forced-convection heat transfer can be implemented using fan or other similar equipment, improve the coefficient of heat transfer and ability.It changes
Heat exchange between hot device fin 1 and cooling medium 3 can also use fan or other similar implementation forced-convection heat transfer, improve
The coefficient of heat transfer and ability.
Claims (5)
1. a kind of novel unidirectional heat transfer heat exchanger mainly include heat exchanger fin 1 ,-heat exchanger body 2, unidirectional thermal switch (including
Capillary materials 7, cavity 8, wall surface 9), ontology 11 forms in heat exchanger inner fin 10 and heat exchanger.
2. a kind of novel unidirectional heat transfer heat exchanger, it is characterised in that: the unidirectionally thin material 7 of thermal switch hairiness, cavity 8 and 9 groups of wall surface
Be mainly metal pipe material at, wall surface 9, such as stainless steel tube, copper pipe perhaps aluminum pipe cross sectional shape can be it is round, rectangular or
Other shapes, capillary materials 7 are mainly wire mesh or sintering metal powder, are covered on the side of 9 inner surface of wall surface, wall surface
In addition to capillary materials inside 9, rest part is all cavity 8.
3. the novel unidirectional heat transfer heat exchanger of one kind according to claim 2, it is characterised in that: punching has certain inside wall surface 9
The single working medium such as the working medium of amount, including but not limited to water, freon, acetone, ethylene, alcohol, ether, nano-fluid or mixing
Object.
4. a kind of novel Stirling cycle heating power expansion mechanism according to claim 1, it is characterised in that: heat exchanger fin
1 and heat exchanger body 2 use integral structure.
5. a kind of novel Stirling cycle heating power expansion mechanism according to claim 1, it is characterised in that: wing in heat exchanger
Ontology 11 uses integral structure in piece 10 and heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640663.3A CN109323608A (en) | 2017-07-31 | 2017-07-31 | A kind of novel unidirectional heat transfer heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640663.3A CN109323608A (en) | 2017-07-31 | 2017-07-31 | A kind of novel unidirectional heat transfer heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109323608A true CN109323608A (en) | 2019-02-12 |
Family
ID=65245034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710640663.3A Pending CN109323608A (en) | 2017-07-31 | 2017-07-31 | A kind of novel unidirectional heat transfer heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109323608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116635686A (en) * | 2020-12-30 | 2023-08-22 | 雷蛇(亚太)私人有限公司 | Vapor chamber with reservoir |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765440Y (en) * | 2005-01-14 | 2006-03-15 | 杨洪武 | Plate type air heat pipe radiator |
| CN101014235A (en) * | 2007-02-09 | 2007-08-08 | 广州恩诺吉电子科技有限公司 | Apparatus of uniform heat transfer and method of manufacturing the same |
| CN101296564A (en) * | 2007-04-27 | 2008-10-29 | 富士迈半导体精密工业（上海）有限公司 | Light source module group with excellent heat dispersion performance |
| CN201421283Y (en) * | 2009-01-15 | 2010-03-10 | 金积德 | Uniform temperature heat transfer device |
| CN102056457A (en) * | 2009-10-30 | 2011-05-11 | 鸿富锦精密工业（深圳）有限公司 | Water-cooling type radiating device |
| CN106455454A (en) * | 2016-12-02 | 2017-02-22 | 中国船舶重工集团公司第七二四研究所 | Cold plate based on capillary and small passage composite structure |
-
2017
- 2017-07-31 CN CN201710640663.3A patent/CN109323608A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765440Y (en) * | 2005-01-14 | 2006-03-15 | 杨洪武 | Plate type air heat pipe radiator |
| CN101014235A (en) * | 2007-02-09 | 2007-08-08 | 广州恩诺吉电子科技有限公司 | Apparatus of uniform heat transfer and method of manufacturing the same |
| CN101296564A (en) * | 2007-04-27 | 2008-10-29 | 富士迈半导体精密工业（上海）有限公司 | Light source module group with excellent heat dispersion performance |
| CN201421283Y (en) * | 2009-01-15 | 2010-03-10 | 金积德 | Uniform temperature heat transfer device |
| CN102056457A (en) * | 2009-10-30 | 2011-05-11 | 鸿富锦精密工业（深圳）有限公司 | Water-cooling type radiating device |
| CN106455454A (en) * | 2016-12-02 | 2017-02-22 | 中国船舶重工集团公司第七二四研究所 | Cold plate based on capillary and small passage composite structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116635686A (en) * | 2020-12-30 | 2023-08-22 | 雷蛇(亚太)私人有限公司 | Vapor chamber with reservoir |
| CN116635686B (en) * | 2020-12-30 | 2024-02-09 | 雷蛇(亚太)私人有限公司 | Vapor chamber with reservoir |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yuan et al. | Phase change cooling in data centers: A review | |
| Dizaji et al. | An exhaustive experimental study of a novel air-water based thermoelectric cooling unit | |
| CN106440432B (en) | A kind of thermoelectricity heat regenerative system | |
| CN101922778B (en) | Semiconductor refrigerating air conditioning device | |
| CN202420024U (en) | Temperature-controllable water-cooling type small semiconductor cold-hot dual-purpose box | |
| CN104197612B (en) | A kind of high efficiency and heat radiation assembly of semiconductor freezer | |
| CN201844486U (en) | Semiconductor refrigerating air-conditioning device | |
| CN101292125A (en) | Heat-exchange facility for thermoelectric application | |
| CN207936540U (en) | A kind of liquid constant temperature circulator of semiconductor temperature | |
| CN105099277A (en) | Day-night temperature difference power generation device based on solar energy | |
| Ma et al. | Design and experimental study of an outdoor portable thermoelectric air-conditioning system | |
| CN102128517A (en) | Cold and hot exchange device | |
| CN111207530B (en) | Composite refrigerating device with semiconductor refrigerator and sky radiation refrigerating body coupled | |
| CN109041508A (en) | A kind of cooling equipment of the passive combined heating power of novel master | |
| CN109323608A (en) | A kind of novel unidirectional heat transfer heat exchanger | |
| CN204029870U (en) | A kind of semiconductor cooling device | |
| CN206584789U (en) | A kind of cold-junction container for helium gas cooling | |
| CN203893485U (en) | Heat pipe type efficient semiconductor refrigeration device | |
| CN201509386U (en) | Telecommunication cabinet with refrigerant circulating heat exchange function | |
| CN108550475B (en) | Film capacitor production is with heat abstractor's circulating refrigeration device | |
| CN203366215U (en) | Industrial personnel computer hard disk constant temperature protection system | |
| Ahmadi et al. | Passive cooling of outside plant power systems, a green solution to reduce energy consumption | |
| CN104009149A (en) | Semiconductor refrigeration device and manufacturing method thereof | |
| CN204792913U (en) | Thermoelectric subassembly of galvanic couple arm and difference in temperature | |
| CN105261597B (en) | A kind of heat dissipation of pipeline module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190212 |
|
| WD01 | Invention patent application deemed withdrawn after publication |