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Title:
HIGH-EFFICIENCY ENERGY-SAVING AIR-ENERGY DUAL-MACHINE HEAT PUMP AIR CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/137125
Kind Code:
A1
Abstract:
A high-efficiency energy-saving air-energy dual-machine heat pump air conditioning system. An outlet of a first compressor (11), via ports d1 and b1 of a first two-position four-way valve (21) and a first check valve (31), and an outlet of a second compressor (12), via a second check valve (32), merge together and connect to a port c2 of a second two-position four-way valve (22). A port d2 of the second two-position four-way valve (22) connects to inlets of a first indoor condenser (51) and a second indoor condenser (52) separately. Outlets of the first and second indoor (51, 52) condensers pass through first, second and third expansion valves (61, 62, 63), and connect to an inlet of an evaporator (71). An outlet of the evaporator (71) passes through ports a2 and b2 of the second two-position four-way valve (22) and diverges into two routes: one route passing through ports c1 and a1 of the first two-position four-way valve (21) and a second liquid tank (42) and connecting to an inlet of the second compressor (12); and the other route passing through a first liquid tank (41) and connecting to an inlet of the first compressor (42). The invention is highly efficient, energy-saving, can be operated freely and is suitable for heating during winter in a cold region.

Inventors:
XU, Shengheng (The Center, 99 Queen's Road CentralCENTRAL, 37/F, Hong Kong, Kong, CN)
Application Number:
CN2017/072402
Publication Date:
August 02, 2018
Filing Date:
January 24, 2017
Export Citation:
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Assignee:
XU, Shengheng (The Center, 99 Queen's Road CentralCENTRAL, 37/F, Hong Kong, Kong, CN)
International Classes:
F25B30/00; F25B6/00; F25B31/00
Attorney, Agent or Firm:
BEIJING SHUANGSHOU INTELLECTUAL PROPERTY AGENT LTD. (Room 506-507 Tower B 3rd Building, Region 5 West Anzhen, Chaoyang, Beijing 9, 100029, CN)
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