Area-separated and functionalized defrosting system of heat pump type air cooled air conditioner
A cold air conditioner, functionalization technology, applied in the field of heat pump air-cooled air conditioner sub-area functional defrosting, can solve the problems of complex structure of air conditioner, stop heating, increase manufacturing cost, etc., achieve significant energy saving, reduce consumption, effect of reducing impact
Active Publication Date: 2013-10-02
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
However, this method needs to add a dedicated compressor waste heat recovery fan and heat pipe components to the outdoor heat exchanger. On the one hand, the structure of the air conditioner is complicated, on the other hand, the manufacturing cost is increased, and during the periodical double-effect defrosting period in winter, there are still The problem of shutting off the heat supply to the room
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[0028] Such as figure 1As shown, the present invention includes: outdoor auxiliary heat exchanger 1, outdoor main heat exchanger 2, indoor heat exchanger 3, hot gas bypass three-way valve 4, outdoor fan 5, four-way reversing valve 6, compressor 7, The compressor gas-liquid separator 8, the electronic expansion valve 9, and the shut-off valve 10, wherein the outdoor auxiliary heat exchanger 1 and the outdoor main heat exchanger 2 constitute the entire outdoor heat exchanger. The high-pressure outlet of the compressor 7 communicates with the first port a of the four-way reversing valve 6, and the second port b of the four-way reversing valve 6 communicates with one end of the outdoor main heat exchanger 2 on the one hand and with the hot gas bypass port on the other hand. The e interface of the three-way valve 4 is connected, the g interface of the hot gas bypass three-way valve 4 is connected with one end of the outdoor auxiliary heat exchanger 1, and the other end of the outdo...
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The invention relates to an area-separated and functionalized defrosting system of a heat pump type air cooled air conditioner. The defrosting system comprises an indoor heat exchanger (3), a compressor (7), an outdoor heat exchanger, an electronic expansion valve (9), a stop valve (10) and an outdoor draught fan (5). Area-separated and functionalized establishment is carried out on the outdoor heat exchanger, and the whole outdoor heat exchanger is formed by two or more than two functionalized heat exchangers. An outdoor auxiliary heat exchanger plays roles in anti-frost, periodical defrosting, auxiliary heating and evaporation and the like in winter in the heating process, and an outdoor main heat exchanger plays a role in absorbing heat on the outdoor air side to carry out indoor heating. The air conditioner can achieve indoor continuous heating during a defrosting period. The area-separated and functionalized defrosting system can ensure normal running of the heat pump type air cooled air conditioner through adoption of an outdoor exchanger area-separated and functionalized auxiliary heating and evaporation mode even if the air conditioner is in a severe cold area with microthermal climate and can meet heating requirements of the air conditioners in a cold area in winter. Compared with a traditional defrosting method, the area-separated and functionalized defrosting system has the advantages of being remarkable in energy conservation, universality and self-adaptability.
Description
technical field [0001] The invention relates to an anti-defrosting method for an air conditioner in the field of energy utilization, in particular to a regionalized functional defrosting method for a heat pump type air-cooled air conditioner. Background technique [0002] Using heat pump type air-cooled air conditioners to heat buildings is one of the most widely used heating technologies at present. The increase of the thermal resistance of the heater causes the heating performance of the air conditioner to drop sharply, and in severe cases, the air conditioner cannot operate normally. Therefore, when the frost layer of the outdoor heat exchanger reaches a certain thickness, defrosting operation must be carried out. At present, the most commonly used defrosting method for heat pump air-cooled air conditioners is to use a four-way reversing valve to temporarily switch the outdoor heat exchanger from the original evaporator working mode to the condenser working mode, and use ...
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IPC IPC(8): F25B47/02
Inventor 李廷贤夏再忠李卉王如竹
Owner SHANGHAI JIAO TONG UNIV
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