Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/100841
Kind Code:
A1
Abstract:
An air conditioning device (100) comprises a refrigerant circuit (110), a control device (6), and a remote controller (13). The refrigerant circuit (110) includes: a rotary compressor (1); a heat exchanger (2) that is installed outside a space to be air-conditioned; an expansion valve (12); a heat exchanger (8) that is installed inside the space to be air-conditioned; and an ammeter (1B). The rotary compressor (1) includes a piston (102) and a vane (103) that partitions the inside of a cylinder (101) into a high-pressure side and a low-pressure side. If the temperature of the space to be air-conditioned reaches a set temperature, the control device (6) controls the rotary compressor (1) such that the rotary compressor (1) continuously operates at a lower-limit frequency. If it was determined that the state detected by the ammeter (1B) is abnormal when the rotary compressor (1) is continuously operated with the lower-limit frequency thereof set to a first frequency, the control device changes the lower-limit frequency of the rotary compressor (1) to a second frequency, which is higher than the first frequency and at which the piston (102) and the vane (103) are not spaced apart from each other.
Inventors:
IWATA HITOSHI (JP)
Application Number:
PCT/JP2022/041926
Publication Date:
May 16, 2024
Filing Date:
November 10, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/356
Domestic Patent References:
| WO2018139066A1 | 2018-08-02 |
Foreign References:
| JPH02149790A | 1990-06-08 | |||
| JPS63219891A | 1988-09-13 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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