CN103216978B - Miniature microchannel heat pump type air conditioner embeds condenser and the defrosting method thereof of heating wire - Google Patents
Miniature microchannel heat pump type air conditioner embeds condenser and the defrosting method thereof of heating wire Download PDFInfo
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- CN103216978B CN103216978B CN201310113594.2A CN201310113594A CN103216978B CN 103216978 B CN103216978 B CN 103216978B CN 201310113594 A CN201310113594 A CN 201310113594A CN 103216978 B CN103216978 B CN 103216978B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 6
- 238000010257 thawing Methods 0.000 title claims description 6
- 239000002184 metal Substances 0.000 claims abstract description 17
- 238000005516 engineering process Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Miniature microchannel heat pump type air conditioner designed by the present invention embeds the condenser of heating wire, and it comprises heat exchanger and heater is formed, and the electric network that described heater is made up of heating wire forms; Described heat exchanger is connected to form by miniature microchannel metal circular tube by inlet tube, outlet, and described miniature microchannel metal circular tube internal diameter is between 0.1-0.4mm; Described heat exchanger and heater are fixed by backplate and interval is arranged.The feature of this structure is to utilize miniature microchannel metal circular tube as main heat-exchanging part, thus reduces the volume of whole heat exchanger, and utilizes heating wire to carry out appropriate heating to it, to reach defrost or to avoid the object of frosting.
Description
Technical field
For air-cooled Industrial air conditioner, civil air conditioner and auto air-con, or the field such as microelectronics and air-source water heater.
Background technology
Current heat pump air conditioner is when heating, and outdoor pusher side, to will frosting time certain, needs commutation to become refrigeration mode, and heat exchanger is generated heat defrost, and under the environment of low temperature, the defrost time can be very long, thus reduce the effect heated.Existing way is the fin adopting electrical heating compressor, electric heating heat exchanger, shortens the defrost time, some PTC fever tablets, some resistance wires, but due to off-premises station front face area large, heating is consumed energy greatly, weak effect.
Summary of the invention
The object of the invention is the deficiency in order to solve above-mentioned technology and provide a kind of volume little, frost-free or the defrost time short, and energy-conservation miniature microchannel heat pump type air conditioner embeds the condenser of heating wire.
In order to achieve the above object, the miniature microchannel heat pump type air conditioner designed by the present invention embeds the condenser of heating wire, and it comprises heat exchanger and heater is formed, and it is characterized in that the electric network that described heater is made up of heating wire forms; Described heat exchanger is connected to form by miniature microchannel metal circular tube by inlet tube, outlet, and described miniature microchannel metal circular tube internal diameter is between 0.1-0.4mm; Described heat exchanger and heater are fixed by backplate and interval is arranged.The feature of this structure is to utilize miniature microchannel metal circular tube as main heat-exchanging part, thus reduces the volume of whole heat exchanger, and utilizes heating wire to carry out appropriate heating to it, to reach defrost or to avoid the object of frosting.
Conveniently heating wire is fixing, and avoid the contact of heating wire and heat exchanger, the electric network on described heater is made up of heating wire and fixture, and wherein said fixture can be directly fixed network, also can be fixed mount.
In order to improve the structural strength of heat exchanger, mention heat transfer effect, described miniature microchannel metal circular tube is by wire fixing composition woven mesh structure.
In order to adapt to the needs of various environment for use, the equipment of corresponding different capacity, described miniature microchannel heat pump type air conditioner embeds the condenser of heating wire, at least comprises two heat exchangers, by serial or parallel connection anatomical connectivity between described heat exchanger.
Miniature microchannel heat pump type air conditioner designed by the present invention embeds the defrosting method of the condenser of heating wire, according to outside behaviour in service, by continuing heating wire or gap energising, keeping the temperature of heater, avoiding heat exchanger frosting or defrost is carried out to heat exchanger.
Miniature microchannel heat pump type air conditioner designed by the present invention embeds condenser and the defrosting method thereof of heating wire, by using miniature microchannel metal circular tube, improve efficiency of heat exchanger, experiment proves, when microchannel diameter is less than 0.4mm, macroscopic theory formula is no longer applicable.Now the frictional resistance of miniature microchannel metal circular tube greatly reduces, and is about the 32%-42% of macroscopic theory value; Heat flow density is up to 100-150, and general traditional heat exchange form can only reach 10-20, and the thermal efficiency greatly improves, and can reach more than 0.95; Nu Saier coefficient (power of reflection convection heat transfer' heat-transfer by convection) reaches as high as 9.20, and traditional macro passage is up to 8.23.Meanwhile, owing to employing miniature microchannel metal circular tube, greatly reduce the volume of heat exchanger, reduce front face area, thus electric-heating-wire-heating can be used can to complete defrost operation.In addition because the heat exchanger employing miniature microchannel metal circular tube is piecemeal woven mesh structure, there is gap in centre, can be arranged in intermediate space by heating wire, improve the effect of defrost, also reduce the loss of energy.In sum, the present invention has miniaturization, and microminiaturized, in same volume, be swapped out more heat, heating effect is good, and the defrost time is short, saves material, the feature of economize energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Detailed description of the invention
Below by embodiment, the invention will be further described by reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1, the miniature microchannel heat pump type air conditioner that the present embodiment describes embeds the condenser of heating wire, and it comprises heat exchanger 1 and heater 2 is formed, and the electric network that described heater 2 is made up of heating wire 3 forms; Described heat exchanger 1 is connected to form by miniature microchannel metal circular tube 6 by inlet tube 4, outlet 5, and described miniature microchannel metal circular tube 6 internal diameter is 0.1mm; Described heat exchanger 1 and heater 2 are fixed by backplate 7 and interval is arranged.Conveniently heating wire 3 is fixing, and avoid the contact of heating wire 3 and heat exchanger 1, the electric network on described heater 2 is made up of heating wire 3 and fixture, and wherein said fixture can be directly fixed mount 8.Described miniature microchannel metal circular tube 6 is by the fixing composition woven mesh structure of wire 9.Described miniature microchannel heat pump type air conditioner embeds the condenser of heating wire 3, comprises two heat exchangers 1, is connected between described heat exchanger 1 by parallel-connection structure.
The miniature microchannel heat pump type air conditioner that the present embodiment describes embeds the defrosting method of the condenser of heating wire 3, according to outside behaviour in service, by continuing or gap energising heating wire 3, keeping the temperature of heater 2, avoiding heat exchanger 1 frosting or defrost is carried out to heat exchanger 1.
Claims (4)
1. miniature microchannel heat pump type air conditioner embeds a condenser for heating wire, and it comprises heat exchanger and heater, it is characterized in that the electric network that described heater is made up of heating wire forms; Described heat exchanger is connected to form by miniature microchannel metal circular tube by inlet tube, outlet, and described miniature microchannel metal circular tube internal diameter is 0.1mm; Described heat exchanger and heater are fixed by backplate and interval is arranged; Described miniature microchannel metal circular tube is by wire fixing composition woven mesh structure.
2. miniature microchannel according to claim 1 heat pump type air conditioner embeds the condenser of heating wire, it is characterized in that the electric network on described heater is made up of heating wire and fixture.
3. miniature microchannel according to claim 1 heat pump type air conditioner embeds the condenser of heating wire, it is characterized in that comprising multiple heat exchanger, by serial or parallel connection anatomical connectivity between described heat exchanger.
4. the defrosting method of the condenser of a miniature microchannel as claimed in claim 1 heat pump type air conditioner embedding heating wire, it is characterized in that according to outside behaviour in service, by continuing heating wire or gap energising, keep the temperature of heater, avoid heat exchanger frosting or defrost is carried out to heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113594.2A CN103216978B (en) | 2013-04-02 | 2013-04-02 | Miniature microchannel heat pump type air conditioner embeds condenser and the defrosting method thereof of heating wire |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310113594.2A CN103216978B (en) | 2013-04-02 | 2013-04-02 | Miniature microchannel heat pump type air conditioner embeds condenser and the defrosting method thereof of heating wire |
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| CN103216978A CN103216978A (en) | 2013-07-24 |
| CN103216978B true CN103216978B (en) | 2015-11-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766328A (en) * | 2016-11-30 | 2017-05-31 | 广东美的制冷设备有限公司 | Heat pump and its defrosting control method |
| CN110345673A (en) * | 2018-12-30 | 2019-10-18 | 浙江吉智新能源汽车科技有限公司 | A kind of heat pump system vehicle external heat exchanger defrosting method and heat pump system and vehicle |
| CN110044119B (en) * | 2019-04-15 | 2021-11-19 | 合肥华凌股份有限公司 | Heat exchange assembly and refrigeration equipment with same |
| CN110715571B (en) * | 2019-11-18 | 2023-10-31 | 西安热工研究院有限公司 | Molten salt heat exchanger core body of printed circuit board |
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Effective date of registration: 20160330 Address after: Hangzhou City, Zhejiang province 310052 Binjiang District River Street (Lin) East Road No. 1810 Building 1 layer 5 Patentee after: Zhejiang Polytron Technologies Inc Address before: Hangzhou City, Zhejiang province 310053 Hangzhou city Binjiang District Puyan Street No. 83 Xinsha Lang Yu Patentee before: Yu Shouren |