Yanmar Co., Ltd.

Masaya Horibe

Shohei Amakawa

Kyoko Hashimoto

An engine driven heat pump is such that when a self-sustaining switch is turned on during power failure, and a self-sustaining signal is received, it switches to a self-sustaining mode and start an engine and a generator, and when output power from an inverter is received, it supplies the output power to a power supply circuit and a battery charging circuit by means of an independent power supply relay, and it supplies the output power to the outside via an independent output unit, and during the supply of the output power, it maintains cutoff with respect to connection between a system, and the power supply circuit and the battery charging circuit by means of a system cutoff relay and maintain the output of the output power until the self-sustaining signal is interrupted, and it recovers the connection when power is restored and the output power is interrupted.

Engine driven heat pump

An engine driven heat pump includes a temperature switch that opens and closes in accordance with the peripheral temperature of an inverter and a control device that includes a signal reception unit, and a temperature open contact point that opens at a predetermined temperature or higher is provided in the temperature switch, and an abnormal-time open contact point that opens when abnormality occurs in a battery charging circuit is provided in the battery charging circuit, and a signal generation contact point that generates a state signal indicating a state of the inverter is provided in the inverter, and the temperature open contact of point the temperature switch, the abnormal-time open contact point of the battery charging circuit, and the signal generation contact point of the inverter are connected in series with respect to the signal reception unit of the control device.

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Osaka, Japan

Masaya Horibe