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Title:
HEAT PUMP TYPE EXHAUST AIR HEAT RECOVERY FRESH AIR CONDITIONING UNIT APPLICABLE TO SEVERE COLD AREAS
Document Type and Number:
WIPO Patent Application WO/2017/193613
Kind Code:
A1
Abstract:
Provided is a heat pump type exhaust air heat recovery fresh air conditioning unit applicable to severe cold areas. The air conditioning unit comprises an air supply heat exchanger (1), an air exhaust heat exchanger (2), a compressor (3), a four-way reversing valve (4), a throttling means (5), a refrigerant connection pipe (9), a fresh air port (10), a first three-way reversing valve (11), a second three-way reversing valve (12), an air supply fan (13), an air supply port (14), an air return port (15), an air exhaust fan (16), a defrosting electric heater (17), an air to air plate heat exchanger (18), an exhaust port (19), and an air flue (20). By deeply preheating outdoor low-temperature air by exhausted air (>0°C) of the air exhaust heat exchanger (2) to increase the temperature of the air supplied to the air supply heat exchanger (1) to be more than -10°C, the air conditioning unit reduces the load of a heat pump system and prevents the air exhaust heat exchanger (2) from frosting, and thus the application range of the heat pump type exhaust air heat recovery fresh air conditioning unit can be greatly enlarged to an outdoor environment temperature of -30°C.

Inventors:
YU YUE (CN)
ZHANG CHUNLU (CN)
CAO XIANG (CN)
Application Number:
PCT/CN2017/070385
Publication Date:
November 16, 2017
Filing Date:
January 06, 2017
Export Citation:
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Assignee:
NANTONG HUAXIN CENTER AIR CONDITIONER CO LTD (CN)
UNIV TONGJI (CN)
International Classes:
F25B29/00
Domestic Patent References:
WO1987001436A11987-03-12
Foreign References:
CN105953469A2016-09-21
CN102425822A2012-04-25
CN104266401A2015-01-07
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