Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Akiyoshi Yamamoto0
Kazushige Maeda0
Date of Patent
February 9, 2021
0Patent Application Number
160768910
Date Filed
December 22, 2016
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A fan drive circuit 1 for a heat pump device is provided. The heat pump device blows air heat exchanged by a heat exchanger using a mildly-flammable or flammable refrigerant having a specific gravity greater than that of air from a blowout port using a fan. The fan drive circuit 1 is equipped with a forced operation circuit configured to operate the fan in the event that it is undetectable that a protection device for preventing a leaked refrigerant from the heat pump device from reaching a combustible density is connected to the heat pump device.
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