摘要:
For achieving an air conditioner being applicable to various a-c source voltages in common and operative with high power factor by suppressing generation of high harmonics, an a-c source voltage from an a-c electric power source 1 is rectified in full-wave by a rectifier 2, and a d-c source voltage Ed of an inverter 13 is obtained by being charged in a condenser 5. Here, there are a-c source voltages of 100 V and 200 V, and a divided voltage Ed1 of the d-c voltage of the condenser 5 is selected when the a-c source voltage is 100 V, a divided voltage Ed2 (here, Ed1 > Ed1) of the d-c voltage of the condenser 5 is selected when the a-c source voltage is 200 V, respectively by an exchange switch 18, and is used as a d-c voltage Ed' for controlling on and off of a switch element 6. Though the d-c source voltage Ed differs depending on the a-c source voltage of 100 V or 200 V, it is possible to set the d-c source voltage Ed at a voltage value for operating the inverter 13 with low loss and high efficiency, for each one of the a-c source voltages, by setting a ratio of the voltage division appropriately.
摘要:
For achieving an air conditioner being applicable to various a-c source voltages in common and operative with high power factor by suppressing generation of high harmonics, an a-c source voltage from an a-c electric power source 1 is rectified in full-wave by a rectifier 2, and a d-c source voltage Ed of an inverter 13 is obtained by being charged in a condenser 5. Here, there are a-c source voltages of 100 V and 200 V, and a divided voltage Ed1 of the d-c voltage of the condenser 5 is selected when the a-c source voltage is 100 V, a divided voltage Ed2 (here, Ed1 > Ed1) of the d-c voltage of the condenser 5 is selected when the a-c source voltage is 200 V, respectively by an exchange switch 18, and is used as a d-c voltage Ed' for controlling on and off of a switch element 6. Though the d-c source voltage Ed differs depending on the a-c source voltage of 100 V or 200 V, it is possible to set the d-c source voltage Ed at a voltage value for operating the inverter 13 with low loss and high efficiency, for each one of the a-c source voltages, by setting a ratio of the voltage division appropriately.
摘要:
A clothes dryer equipped with a condensation unit (23, 38, 73) in which the cooling water that is fed is brought into direct contact with the humid air to dehumidify the humid air. The clothes dryer comprises a drum (4) which is horizontally supported by bearings in a dryer housing and which contains a laundry therein; a condensation unit (23, 38, 73) which cools the humid air containing vapor generated from said laundry, and which condenses the vapor contained in the humid air to remove it; a heater (26) accommodated in a heater duct (8d) for heating the air that is dehumidified through the condensation unit (23, 38, 73); a circulating fan (20) which supplies the humid air in the drum (4) to the condensation unit (23, 38, 73), supplies the air in the condensation unit (23, 38, 73) to the surrounding of the heater (26), and supplies the air from the surrounding of the heater (26) to the drum (4). The condensation unit (23, 38, 73) of the clothes dryer comprises a first duct (24, 39, 75) connected at its one end to the delivery portion of the circulating fan (20) and arranged with its other end being directed downwardly of the dryer housing; a second duct (25, 40, 76) connected at its one end to the other end of the first duct (24, 39, 75) and connected at its other end to the heater duct (8d); a cooling water pouring port for feeding cooling water to the second duct; cooling means for bringing the cooling water into direct contact with the humid air; and a water drain port for draining from the second duct (25, 40, 76) the water condensed from the humid air and the cooling water.