Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/210444
Kind Code:
A1
Abstract:
Provided is a refrigeration cycle device which makes it possible to inhibit a working medium disproportionation reaction. This refrigeration cycle device is equipped with a control device (3) for controlling a compressor (4) equipped with: a sealed container (40) which constitutes a channel for a working medium (20) which contains an ethylene-based fluoro-olefin as a coolant component; and a compressor mechanism (41) and an electric motor (42) which are positioned inside the sealed container (40). This control device (3) has a drive circuit (31) and a control circuit (32). The drive circuit (31) has: a converter circuit (311) which has a first output point (P1) which outputs a first voltage, a second output point (P2) which outputs a second voltage which is lower than the first voltage, and a third output point (P3) which outputs a third voltage which is between the first and second voltages; and an inverter circuit (312) which includes first through third semiconductor switching element groups which are respectively connected between the first through third output points (P1, P2, P3) and the electric motor (42). The control circuit (32) executes a PWM control for the first through third semiconductor switching element groups in a manner such that the drive circuit (31) operates the electric motor (42).
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Inventors:
HIWATA AKIRA
DOYAMA YOSHIAKI
DOYAMA YOSHIAKI
Application Number:
PCT/JP2023/015489
Publication Date:
November 02, 2023
Filing Date:
April 18, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F04B39/00; F25B1/00; F25B31/02
Foreign References:
| JP2017003197A | 2017-01-05 | |||
| JP2021161316A | 2021-10-11 | |||
| JP2020070930A | 2020-05-07 | |||
| JP2022044019A | 2022-03-16 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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