Mechanical defrosting device for outdoor flat plate type heat exchanger of air source heat pump system

An air-source heat pump and flat-plate technology, which is applied in the direction of refrigerators, lighting and heating equipment, and damage protection, can solve problems such as hindering the normal operation of the air-source heat pump system, affecting indoor comfort, and air temperature fluctuations. Thermal effect, good defrosting effect, and improved defrosting efficiency

Inactive Publication Date: 2017-04-26
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the implementation of these methods, the temperature on the surface of the heat exchanger needs to be raised above 0°C for defrosting, which hinders the normal operation of the air source heat pump system, causes fluctuations in the indoor air temperature, affects indoor comfort, and takes a long time for defrosting. Long, the system consumes a lot of energy

Method used

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  • Mechanical defrosting device for outdoor flat plate type heat exchanger of air source heat pump system
  • Mechanical defrosting device for outdoor flat plate type heat exchanger of air source heat pump system

Examples

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Embodiment Construction

[0022] The invention includes a flat-plate outdoor heat exchanger and a frame fixed to the heat exchanger. On both sides of the fixed frame, a rack is laid as a track, and the gear and the rack are engaged to move and drive to be placed on the two gears. The straight rod of the brush head moves up and down, so that the curved defrosting brush head installed on the straight rod of the brush head completes the task of defrosting the surface of the outdoor heat exchanger during the movement. The power is provided by the motors placed on the racks on both sides, and the gears are driven by the output shafts to rotate on the meshed racks, so that the defrosting brush heads can finally complete the entire defrosting process.

[0023] Such as figure 1 As shown, the mechanical defrosting device includes a flat plate heat exchanger 2 composed of a coil tube 1 and a fixed frame 3 installed thereon. The two motors 5 providing power are respectively fixed on the racks 8 on both sides, an...

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Abstract

The invention discloses a mechanical defrosting device for an outdoor flat plate type heat exchanger of an air source heat pump system. The mechanical defrosting device comprises the outdoor flat plate type heat exchanger which consists of coiled tubes as well as a framework, a brush head straight rod, a motor, a gear, a frame rail, a frame, a rack and a defrosting brush head which are fixedly equipped with the heat exchanger. According to the mechanical defrosting device disclosed by the invention, the surface of the flat plate type heat exchanger is wavy, so that heat transfer area of the heat exchanger can be effectively improved; and an arc-shaped brush head is correspondingly adopted to be matched with the surface of the heat exchanger better, so that defrosting efficiency is remarkably improved. The mechanical defrosting device is adopted, so that a frost layer can be quickly and effectively removed with low energy consumption when the air source heat pump system continuously and normally operates, and therefore, heating effect of the system is improved, and the indoor temperature is kept stable.

Description

technical field [0001] The invention relates to the field of HVAC, in particular to a mechanical defrosting device for an outdoor heat exchanger of an air source heat pump system. Background technique [0002] Air source heat pump, as a kind of heat pump technology, has the reputation of "porter of natural energy", and has multiple advantages such as low cost of use, easy operation, good heating effect, safety and cleanliness. The energy in the ubiquitous air is used as the main power, and the compressor is driven by a small amount of electric energy to realize energy transfer, without complicated configuration, expensive water intake, recharge or soil heat exchange system and special machine room, and it is the same as coal-fired Boiler CO 2 The emission can be reduced by 30% compared with that of traditional heating, which can gradually reduce the large amount of pollutant emission brought by traditional heating to the atmospheric environment, and take into account the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B47/00
CPCF25B47/00
Inventor 吴小舟刘雨佳
Owner XI AN JIAOTONG UNIV
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