Air conditioner

摘要

Disclosed is an air conditioner which can obtain an energy-saving effect without any change to the setting temperature set by a user and, accordingly, without causing discomfort to the user. If a capacity restriction mode is set to at least one of indoor units Y1 and Y2, the setting temperature Ts in the indoor units Y1 and Y2 is not changed and is maintained at a value set by the user and a compressor 1 is operated with the capacity less than the normal capacity.

主权项

1. An air conditioner, comprising:
an outdoor unit which has a compressor of a capacity variable type and an outdoor heat exchanger; a plurality of indoor units, each having an indoor heat exchanger and a flow regulating valve; a first controller which is provided in each indoor unit and detects a difference between a room temperature and a set temperature as an air conditioning load for each indoor unit, the first controller informing the outdoor unit of a request capacity according to an air conditioning load for each indoor unit; a second controller which is provided in the outdoor unit and controls the capacity of the compressor of the capacity variable type according to a sum of the request capacities of the indoor units; an operation circuit which is provided in remote control operators operatively coupled to each indoor unit and designates a capacity restriction mode; a third controller which is provided in each indoor unit and sets a maximum value for the request capacity of the indoor unit where the capacity restriction mode is set without changing the set temperature and without stopping operation of each indoor unit before a sufficient increase or decrease of indoor temperature to the set temperature, when the capacity restriction mode is set by the operation circuit; a determining circuit which is provided in each indoor unit and determines whether the outdoor unit accepts the capacity restriction based on a signal from the outdoor unit; and a fourth controller which is provided in each indoor unit, allows setting of the maximum value by the third controller, when a determination result of the determining circuit is YES, and prohibits setting of the maximum value by the third controller, when the determination result of the determining circuit is NO; and a valve aperture controller which is provided in the outdoor unit and calculates an aperture of the flow regulating valve of each indoor unit according to the request capacity set by the third controller.