Air conditioning apparatus
AssigneeMitsubishi Electric Corporation
InventorsShogo Tamaki, Kojiro Motomura, Haruo Nakano
Life of this patent
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Abstract
When a heating operation mode using a heating unit is specified and when a hot water supply request using the hot water in a hot water storage tank does not occur, an air conditioning apparatus transmits a first selection signal for selecting the heating unit to a three-way valve. When the heating operation mode is specified and when the hot water supply request occurs, the air conditioning apparatus transmits, to the three-way valve, a second selection signal for changing a destination of circulation of secondary refrigerant from the heating unit to a coil heat exchanger, and transmits an operation start signal to a refrigerant indoor unit.
Claims10
An air conditioning apparatus configured to perform heating and hot water supply, the air conditioning apparatus comprising:
- a heat source unit configured to operate as a heat source of a first refrigerant;
- a heating unit placed in a room and configured to perform heating by circulating a second refrigerant;
- a refrigerant indoor unit configured to receive the first refrigerant from the heat source unit and perform air conditioning of the room;
- and
- a hot water unit configured to heat the second refrigerant by circulating the first refrigerant and generate hot water by circulating the second refrigerant, the hot water unit comprising:
- a hot water storage tank;
- a first heat exchanging unit configured to exchange heat between the first refrigerant and the second refrigerant;
- a second heat exchanging unit configured to exchange heat between the second refrigerant and water in the hot water storage tank;
- and
- a flow path selection unit configured to select from two available options including (i) the second heat exchanging unit and the first heat exchanging unit forming a circulation passage and (ii) the heating unit and the first heat exchanging unit forming a circulation passage,
- wherein when the heating unit is operating and when a request for hot water in the hot water storage tank occurs, the flow path selection unit is configured to select the second heat exchanging unit and the first heat exchanging unit forming the circulation passage, and the refrigerant indoor unit is configured to start heating.
Dependencies are inferred from the claim text.