Title:
HEAT PUMP UNIT
Document Type and Number:
WIPO Patent Application WO/2020/179030
Kind Code:
A1
Abstract:
This heat pump unit (7) has: a rectification circuit (11); a power supply circuit (12) for generating a power supply from a DC current obtained from the rectification circuit (11); a control device (13) that operates on the basis of the generated power supply, the control device (13) including a function for cutting off the supply of power from the rectification circuit (11) to the power supply circuit (12); piping (27) that channels circulating water; and a thermostat sensor (21) that, when the temperature of the piping (27) or the temperature of air outside the heat pump unit (7) is equal to or less than a temperature at which it has been determined in advance that there is a risk of freezing of the water passing through the piping (27), if the supply of power from the rectification circuit (11) to the power supply circuit (12) has been cut off, restores the supply of power from the rectification circuit (11) to the power supply circuit (12). When the supply of power from the rectification circuit (11) to the power supply circuit (12) has been restored from a cut-off state, the control unit (13) causes the compressor (10) to be driven, and causes water to be circulated between a tank unit (1) and the heat pump unit (7).
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Inventors:
KIKUGAWA SATORU (JP)
Application Number:
PCT/JP2019/008938
Publication Date:
September 10, 2020
Filing Date:
March 06, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24H4/02
Foreign References:
| JP2013088037A | 2013-05-13 | |||
| JP2013096678A | 2013-05-20 | |||
| JP2010216786A | 2010-09-30 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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