Title:
環境監視装置
Document Type and Number:
Japanese Patent JP6911441
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an environment monitoring device which uses a sensor which needs electric power supply to be in a state that the sensor can detect a refrigerant and enables increase of the life of the sensor while maintaining detection accuracy of occurrence of refrigerant leakage.SOLUTION: An environment monitoring device according to the invention includes: a first sensor part 110 which can detect a refrigerant without receiving electric power supply; a second sensor part 120 which is turned into a state that the second sensor part 120 can detect the refrigerant when supplied with sensor driving power; an electric power supply part 130 which supplies the sensor driving power to the second sensor part 120; and a leakage detection part 140 which detects occurrence of refrigerant leakage on the basis of a detection result of the second sensor part 120. The electric power supply part 130 supplies the sensor driving power to the second sensor part 120 on the basis of a detection result of the first sensor part 110.SELECTED DRAWING: Figure 2
Inventors:
Akira Maeda
Kawashima Mitsuru
Kawashima Mitsuru
Application Number:
JP2017059743A
Publication Date:
July 28, 2021
Filing Date:
March 24, 2017
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F24F11/89; F24F11/36; F25B49/02
Domestic Patent References:
| JP2010139226A | ||||
| JP2002115939A | ||||
| JP11230648A |
Foreign References:
| WO2016046961A1 | ||||
| US20170074747 |
Attorney, Agent or Firm:
Mamoru Takada
Hideki Takahashi
Jiro Ozawa
Hideki Takahashi
Jiro Ozawa