CN103216978A - Condenser embedded with heating wires for mini microchannel heat pump type air conditioner and deriming method of condenser - Google Patents
Condenser embedded with heating wires for mini microchannel heat pump type air conditioner and deriming method of condenser Download PDFInfo
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- CN103216978A CN103216978A CN2013101135942A CN201310113594A CN103216978A CN 103216978 A CN103216978 A CN 103216978A CN 2013101135942 A CN2013101135942 A CN 2013101135942A CN 201310113594 A CN201310113594 A CN 201310113594A CN 103216978 A CN103216978 A CN 103216978A
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Abstract
The invention provides a condenser embedded with heating wires for a mini microchannel heat pump type air conditioner. The condenser is composed of a heat exchanger and a heater, wherein the heater consists of an electric heating network composed of the heating wires; the heat exchanger is formed by connecting an inlet pipe with an outlet pipe through a mini microchannel metal round tube of which the internal diameter is between 0.1 mm and 0.4 mm; and the heat exchanger and the heater are fixed by virtue of a backplate and are separately arranged. The condenser with such a structure has the following characteristics: the mini microchannel metal round tube is used as a main heat exchange component, so that the volume of the whole heat exchanger is reduced; and the condenser is properly heated by virtue of the heating wires, so that the purpose of deriming or avoid frost formation is achieved.
Description
Technical field
Be used for air-cooled industrial air-conditioning, civilian air-conditioning and auto air-con, or fields such as microelectronics and air-source water heater.
Background technology
Present heat pump air conditioner is when heating, and outdoor pusher side will frosting time certain, needs commutation become refrigeration mode, makes heat exchanger heating defrost, and the defrost time can be very long under the environment of low temperature, thereby reduced the effect that heats.Existing way is to adopt the fin of electrical heating compressor, electric heating heat exchanger, shortens the defrost time, have with the PTC sheet that generates heat, what have use resistance wire, but because the off-premises station front face area is big, the heating power consumption greatly, weak effect.
Summary of the invention
The objective of the invention is provides a kind of volume little for the deficiency that solves above-mentioned technology, and frost-free or defrost time are 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 designed miniature microchannel heat pump type air-conditioner of the present invention embeds the condenser of heating wire, and it comprises that heat exchanger and heater constitute, and it is characterized in that described heater is made up of the electric network that heating wire constitutes; 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 are provided with at interval.The characteristics of this structure are to utilize miniature microchannel metal circular tube as main heat-exchanging part, thereby reduce the volume of whole heat exchanger, and utilize heating wire that it is carried out an amount of heating, to reach defrost or to avoid the purpose of frosting.
For convenience heating wire is fixing, avoids contacting of heating wire and heat exchanger, and the electric network on the described heater is made up of heating wire and fixture, and wherein said fixture can directly be a fixed network, also can be fixed mount.
In order to improve the structural strength of heat exchanger, mention the heat exchange effect, described miniature microchannel metal circular tube is by the fixing woven mesh structure of forming of wire.
In order to adapt to the needs of various environments for use, the equipment of corresponding different capacity, described miniature microchannel heat pump type air-conditioner embeds the condenser of heating wire, comprises two heat exchangers at least, connects by the serial or parallel connection structure between the described heat exchanger.
The designed miniature microchannel heat pump type air-conditioner of the present invention embeds the defrosting method of the condenser of heating wire, be according to outside behaviour in service, by heating wire being continued or the gap energising, keep the temperature of heater, avoid the heat exchanger frosting or heat exchanger is carried out defrost.
The designed miniature microchannel heat pump type air-conditioner of the present invention embeds the condenser and the defrosting method thereof of heating wire, by using miniature microchannel metal circular tube, improve efficiency of heat exchanger, experimental results show that, when microchannel diameter during less than 0.4mm, the macroscopic theory formula is no longer suitable.This moment, the frictional resistance of miniature microchannel metal circular tube greatly reduced, and was 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 the traditional macro passage is up to 8.23.Simultaneously,, greatly reduce heat exchanger volume, reduced front face area, thereby can use the heating wire heating can finish the defrost operation owing to used miniature microchannel metal circular tube.Be piecemeal woven mesh structure owing to having used the heat exchanger of miniature microchannel metal circular tube in addition, there is the gap in the centre, heating wire can be arranged in the intermediate space, has improved the effect of defrost, has also reduced the loss of energy.In sum, the present invention has miniaturization, and microminiaturization exchanges out more heat in equal volume, and heating effect is good, and the defrost time is short, economical with materials, the characteristics of energy savings.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
The specific embodiment
The invention will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1:
As shown in Figure 1, the miniature microchannel heat pump type air-conditioner that present embodiment is described embeds the condenser of heating wire, and it comprises that heat exchanger 1 and heater 2 constitute, and described heater 2 is made up of the electric network that heating wire 3 constitutes; 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 diameters are 0.1mm; Described heat exchanger 1 and heater 2 are by backplate 7 fixing and settings at interval.For convenience heating wire 3 is fixing, avoids contacting of heating wire 3 and heat exchanger 1, and the electric network on the described heater 2 is made up of heating wire 3 and fixture, and wherein said fixture can directly be a fixed mount 8.Described miniature microchannel metal circular tube 6 is by the wire 9 fixing woven mesh structure of forming.Described miniature microchannel heat pump type air-conditioner embeds the condenser of heating wire 3, comprises two heat exchangers 1, connects by parallel-connection structure between the described heat exchanger 1.
The miniature microchannel heat pump type air-conditioner that present embodiment is described embeds the defrosting method of the condenser of heating wire 3, be according to outside behaviour in service, by heating wire 3 is continued or the gap energising, keep the temperature of heater 2, avoid heat exchanger 1 frosting or heat exchanger 1 is carried out defrost.
Claims (5)
1. a miniature microchannel heat pump type air-conditioner embeds the condenser of heating wire, and it comprises that heat exchanger and heater constitute, and it is characterized in that described heater is made up of the electric network that heating wire constitutes; 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 are provided with at interval.
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 the 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 described miniature microchannel metal circular tube is by the fixing woven mesh structure of forming of wire.
4. miniature microchannel according to claim 1 heat pump type air-conditioner embeds the condenser of heating wire, it is characterized in that comprising a plurality of heat exchangers, connects by the serial or parallel connection structure between the described heat exchanger.
5. a miniature microchannel as claimed in claim 1 heat pump type air-conditioner embeds the defrosting method of the condenser of heating wire, it is characterized in that according to outside behaviour in service, by heating wire being continued or the gap energising, keep the temperature of heater, avoid the heat exchanger frosting or heat exchanger is carried out defrost.
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 |
|---|---|---|---|
| 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 true CN103216978A (en) | 2013-07-24 |
| CN103216978B CN103216978B (en) | 2015-11-25 |
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Cited By (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 |
| CN110044119A (en) * | 2019-04-15 | 2019-07-23 | 合肥华凌股份有限公司 | Heat-exchanging component and refrigeration equipment with it |
| 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 |
| CN110715571A (en) * | 2019-11-18 | 2020-01-21 | 西安热工研究院有限公司 | Printed circuit board fused salt heat exchanger core and use method thereof |
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Cited By (5)
| 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 |
| CN110044119A (en) * | 2019-04-15 | 2019-07-23 | 合肥华凌股份有限公司 | Heat-exchanging component and refrigeration equipment with it |
| CN110715571A (en) * | 2019-11-18 | 2020-01-21 | 西安热工研究院有限公司 | Printed circuit board fused salt heat exchanger core and use method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103216978B (en) | 2015-11-25 |
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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 |