Sanyo Electric Co., Ltd.

Manabu Ishihara

Tomonori Isobe

Tsugio Nakae

Satoshi Matsumoto

Hiroshi Kanai

Tsuyoshi Rakuma

Toru Fujisawa

Masato Watanabe

Kouichi Matsumoto

Hiroyuki Nunokawa

Hiroshi Yoshida

Junichi Matsuoka

Yuki Takatsu

Hiroshi Hirose

Eiji Kawabe

Kazuhito Fujinaka

Takashi Fudo

There is provided a controlling apparatus for an air conditioner, which comprises: an inverter circuit for feeding as an output a pseudo-sine wave from a switching signal obtained by comparison between a modulated wave and a carrier wave; a refrigeration cycle device which has a compressor driven by the pseudo-sine wave from the inverter circuit so that the modulated wave is adjusted according to a load of an air conditioner; and a correction device for correcting an amplitude of the modulated wave into a smaller one at a predetermined time when a rated voltage of the power source from the inverter circuit is larger than a rated voltage by a first predetermined value, and correcting the modulated wave into a larger one at a predetermined time when a rated voltage of the power source from the inverter circuit is smaller than the rated voltage by a second predetermined value. The predetermined time is elongated as the difference between the aforementioned power source voltage and the rated voltage becomes larger, so that shutdown of the compressor is restricted at the voltage variation of the power source.

Apparatus for controlling an air conditioner

Controller of air conditioner

An air conditioner for reduction of energy consumption without impairing the comfortable feeling, which comprises a room temperature detector for detecting the room temperature of an air-conditioned room, temperature setting apparatus for setting a target temperature, air conditioning device for performing an air conditioning operation to bring the room temperature detected by the room temperature detector toward the target temperature, and target temperature charger, which corrects the target temperature to rise and fall periodically in accordance with a predetermined rule after the room temperature has substantially reached the target temperature through use of the air conditioning devices. The charger shifts the average value of the target temperature after the start of the correction in such a direction that the air conditioning load of the air conditioning device is reduced from that for attaining the target temperature before the correction.

Air conditioner

Operation mode setting apparatus for air conditioner

This invention aims to facilitate setting and modifications of characteristic data for microcomputers used for control of various types of air conditioner. A control device for the air conditioner comprises a microcomputer having a first ROM for storing a program for controlling operations of a compressor and a blower, a RAM for storing present data and various data associated with the operations and a CPU for executing the program. A second ROM is provided in the control device for storing specific data representing capacity of the components such as compressors and a blower, functions of the air conditioner, exclusive cooling or cooling/heating and so on.

Control device for air conditioner

Growing community of inventors

Isesaki, Japan

Manabu Ishihara