Title:
AIR CONDITIONER
Document Type and Number:
Japanese Patent JP3270542
Kind Code:
B2
Abstract:
PURPOSE: To provide an air conditioner having an invertor therein for compensating a primary resistance varied in response to temperature, preventing the controlling accuracy from being lowered by a variation in the primary resistance and attaining a high efficiency.
CONSTITUTION: An air conditioner comprises a shell discharging pressure sensor 33 for sensing the discharge pressure of a compressor 1, a refrigerant flow rate sensor 34 for sensing the refrigerant flow rate within a discharging pipe, a shell discharging temperature and motor temperature estimating circuit 32 for estimating the shell discharging temperature and the motor temperature in reference to the discharging pressure and the refrigerant flow rate, a primary resistance estimating circuit 31 for estimating the primary resistance set value RΛs in reference to the motor temperature and a vector control instruction calculation circuit 12.
Inventors:
Izumi Yoshida
Keiji Ogawa
Keiji Ogawa
Application Number:
JP29687692A
Publication Date:
April 02, 2002
Filing Date:
November 06, 1992
Export Citation:
Assignee:
Matsushita Cold Machinery Co., Ltd.
International Classes:
F24F11/02; F04B49/06; F25B1/00; (IPC1-7): F25B1/00; F04B49/06; F24F11/02
Domestic Patent References:
| JP63283492A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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