Title:
COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2023/243117
Kind Code:
A1
Abstract:
This compressor is provided with: a compressor body (11); a motor (12); a current sensor (13b) that detects a current value of the motor (12); and a control device (14) that controls driving of the motor (12). The control device (14) computes a current value (I1) of the motor (12) after a first time elapses since the start of the motor (12) and a current value (I2) of the motor (12) after a second time longer than the first time elapses since the start of the motor (12) via the current sensor (13b), and sends different modes of notices between a case in which the following expression (1) is established and a case in which the following expression (2) is established with respect to a first threshold (I1limit) that is smaller than a start current value of the motor (12) and greater than a constant current value of the motor (12) and a second threshold (I2limit) that is smaller than the first threshold (I1limit) and greater than the constant current value of the motor (12). (1): I1 < I1limit and I2 > I2limit
(2): I1 > I1limit and I2 > I2limit
Inventors:
NARISAWA NOBUYUKI (JP)
UMEDA KEN (JP)
UMEDA KEN (JP)
Application Number:
PCT/JP2022/042242
Publication Date:
December 21, 2023
Filing Date:
November 14, 2022
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04B49/10
Domestic Patent References:
| WO2019176513A1 | 2019-09-19 |
Foreign References:
| JP2021127750A | 2021-09-02 | |||
| JPS63212785A | 1988-09-05 | |||
| JP2000205140A | 2000-07-25 | |||
| JP2016505753A | 2016-02-25 | |||
| JP2019011733A | 2019-01-24 | |||
| JP5767632B2 | 2015-08-19 | |||
| JP2008200209A | 2008-09-04 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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