INDOOR UNIT AND AIR CONDITIONING DEVICE

WIPO Patent Application WO/2022/234859

A1

It is preferable to suppress the electric power consumption of a drain pump by reducing the operation time of the drain pump if a generated amount of drain water is small. According to the present invention, an indoor unit (12) is used in an air conditioning device (10) capable of executing a cooling operation by circulating a refrigerant. The indoor unit (12) comprises an indoor heat exchanger (50), a drain pan (57), a drain pump (59), and an indoor controller (92). The indoor heat exchanger (50) exchanges heat between the refrigerant and indoor air. The drain pan (57) receives water generated by the indoor heat exchanger (50). The drain pump (59) suctions up water from the drain pan (57). During execution of the cooling operation, when the evaporation temperature of the refrigerant within the indoor heat exchanger (50) is at or below the dew-point temperature of the indoor air, the indoor controller (92) operates the drain pump (59). During execution of the cooling operation, when the evaporation temperature of the refrigerant is higher than the dew-point temperature, the indoor control unit (92) controls the drain pump (59) so as to have a period in which the drain pump (59) is not operated.

JP2018124003	HEAT EXCHANGE TYPE VENTILATION DEVICE
WO/2021/200983	ENVIRONMENT CONTROL SYSTEM AND ENVIRONMENT CONTROL METHOD
JP6578695	Air conditioner

MIURA SHU
NISHITANI KEISUKE
SANAGI TSUNEHISA

PCT/JP2022/019569

November 10, 2022

May 06, 2022

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DAIKIN IND LTD (JP)

F24F11/70; F24F13/22

JP2008232511A	2008-10-02
JP2009180492A	2009-08-13
JPS63302241A	1988-12-09
JPH0493545A	1992-03-26
JP2020133915A	2020-08-31
JPS52141034A	1977-11-25
JPH07332743A	1995-12-22

SHINJYU GLOBAL IP (JP)

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