To improve dehumidifying effect while contriving the prevention of freezing in an indoor heat exchanger through the increase or decrease of the flow rate of indoor air by a method wherein a reference temperature for regulating the flow rate of indoor air by a detecting temperature of a heat medium is changed upon cooling operation and dehumidifying operation.
Upon deciding whether the increase or the decrease of the number of rotation of an indoor fan is effected or not during cooling operation, a lower limit reference value T1, deciding whether the number of rotation to obtain the lower limit of a heat medium temperature is increased or not, or an upper limit reference value T2, deciding whether the number of rotation to obtain the upper limit of the same temperature is decreased or not, is determined (step 103), then, the reference values T1, T2 of the heat medium temperature, which are different upon dehumidifying operation and cooling operation, are determined (step 104). A heat medium temperature Te is decided whether the same is lower than the lower limit reference value T1 or not (step 106) and when the temperature Te is lower than the reference value T1, the number of rotation of an indoor fan is increased (step 107). When the heat medium temperature Te is higher than the reference value T1, whether the temperature Te is higher than the upper limit value T2 or not is decided (step 108) and when the temperature Te is higher than the upper limit reference value T2, the number of rotation of the indoor fan is reduced by a predetermined number of rotation (step 109).
| WO/2011/111477 | ENERGY MANAGEMENT SYSTEM |
| JP3482884 | AIR TREATMENT APPARATUS |
TOKURA SATOSHI
SANKOU MASAKI
NARAI SHIGERU
FUJIKOSO TERUO
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