US 4,507,938 AGranted

System for air-conditioning and hot water supplying

AssigneeMitsubishi Denki Kabushiki Kaisha

InventorsHiroaki Hama, Toshiro Abe

Life of this patent

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Abstract

An air-conditioning and hot water supply system, which comprises a heat pump type refrigerating device at the primary side having a user side heat-exchanger and a heat source side heat-exchanger with a coolant of excellent low temperature characteristic being filled in both of them; a refrigerating device at the secondary side having a user side condenser for heating water for hot water supply and a heat source side evaporator with a coolant of excellent high temperature characteristic being filled in both of them; fan coil units for air-conditioning communicatively connected with the user side heat-exchanger of the heat pump type refrigerating device at the primary side and the heat source side evaporator of the refrigerating device at the secondary side; and a circuit for air-conditioning, through which cold or warm water is caused to circulate between the user side heat exchanger and the heat source side evaporator, the cold water or warm water after the air-conditioning operation by the fan coil units being circulated in the heat source side evaporator of the refrigerating device at the secondary side and the user side heat exchanger of the heat pump type refrigerating device at the primary side.

Claims11

Dependent claims

An air-conditioning and hot water supply system, which comprises:

(a) a reversible heat pump type refrigerating device at the primary side having a user side heat-exchanger and a heat source side heat-exchanger with a coolant of excellent low temperature characteristic being filled in both of said user side heat exchanger and said heat source side heat exchanger;
(b) a refrigerating device at the secondary side having a user side condenser for heating water for hot water supply and a heat source side evaporator with a coolant of excellent high temperature characteristic being filled in both of said user side condenser and said heat source side evaporator;
(c) a circuit for air-conditioning, through which cold or warm water is caused to circulate between said user side heat exchanger of said primary side heat pump and said heat source side evaporator of said secondary side refrigerating device;
(d) a fan coil unit for air-conditioning communicatively connected with said circuit for air-conditioning,
(e) means for transporting said water in said circuit for air-conditioning from said user side heat exchanger of said primary side heat pump to said fan coil unit and thereafter to said heat source side evaporator of said secondary side refrigerating device;
and
(f) circulating means for causing the circulation of said water in said circuit for air-conditioning.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/530,354Filed 8 Sep 1983
Priority: JP 57-15916310 Sep 1982
Granted: 2 Apr 1985
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

F25B 29/003
Combined heating and refrigeration systems, e.g. operating alternately or simultaneously: of the compression type system
F24D 11/0214
Using heat pumps: water heating system
F24D 19/1072
For the combination of central heating and domestic hot water: the system uses a heat pump
F24F 3/06
Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or…:…