AIR CONDITIONER
In order to be able to comply itself to the environment-conscious design standard, a refrigerant heating method is obtained with high efficiency during standby and reduction of vibrations and noises of a bearing in a compressor. An compressor 1, a motor 8 to drive the compressor 1, an inverter 9 to...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
29.07.2015
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Subjects | |
Online Access | Get full text |
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Summary: | In order to be able to comply itself to the environment-conscious design standard, a refrigerant heating method is obtained with high efficiency during standby and reduction of vibrations and noises of a bearing in a compressor. An compressor 1, a motor 8 to drive the compressor 1, an inverter 9 to apply a desired voltage to the motor 8, an inverter control means 11 to control the inverter 9, and a bus voltage detecting means 10 to detect a bus voltage of the inverter 9 are provided, in which the inverter control means 11 includes dormant refrigerant detecting means 12 to detect a dormant state of refrigerant in the compressor 1, high-frequency AC voltage generating means 13 to output a high-frequency AC voltage command out of a range of an operating frequency when the motor 8 is undergoing compression operation to a coil of the motor 8 on the basis of an output of the dormant refrigerant detecting means 12, an amplitude, and a phase, and PWM signal generating means 15 to cause the inverter 9 to generate a high-frequency AC voltage by generating a PWM signal on the basis of the output of the high-frequencyAC voltage generating means 13 and the output of the bus voltage detecting means 10. |
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Bibliography: | Application Number: EP20100808051 |