Title:
MACHINE USING REFRIGERANT COMPRESSION HEAT PUMP, DIAGNOSTIC DEVICE FOR REFRIGERANT COMPRESSION HEAT PUMP, AND DIAGNOTIC METHOD FOR REFRIGERANT COMPRESSION HEAT PUMP
Document Type and Number:
WIPO Patent Application WO/2018/179333
Kind Code:
A1
Abstract:
In order to improve the efficiency of maintenance and inspection work for a machine that uses a refrigerant compression heat pump, this diagnostic device for a refrigerant compression heat pump is equipped with: a first sensor for measuring the power consumption of a fan system that supplies air to a condenser and an evaporator in a refrigerant compression heat pump that circulates a refrigerant between the condenser and the evaporator; a second sensor for measuring the power consumption of a compressor that compresses the refrigerant that has passes through the evaporator; and a diagnostic unit for detecting a defect in the condenser or the evaporator on the basis of a change in the power consumption of the fan system and the compressor during a prescribed period.
Inventors:
SHOUJIGUCHI AKIRA (JP)
CHIBA MASAKI (JP)
SUZUKI RYOTA (JP)
SANEYOSHI EISUKE (JP)
KOUMOTO SHIGERU (JP)
CHIBA MASAKI (JP)
SUZUKI RYOTA (JP)
SANEYOSHI EISUKE (JP)
KOUMOTO SHIGERU (JP)
Application Number:
PCT/JP2017/013597
Publication Date:
October 04, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
F25B49/02
Foreign References:
| JP2008510122A | 2008-04-03 | |||
| JP2002147907A | 2002-05-22 | |||
| JP2013120041A | 2013-06-17 |
Attorney, Agent or Firm:
KATO, Asamichi (JP)
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