Air-conditioning apparatus with ventilation operation and controlling method thereof

Abstract

The invention provides an air-conditioning apparatus with ventilation operation, comprising: an air feeding pressure sensor provided in an air feeding channel for detecting the pressure for feeding air; an air discharging pressure sensor provided in an air discharging channel for detecting the pressure for discharging air; an airflow regulating unit equiped in the air feeding channel or the air discharging channel to regulate airflow supplied through the channels; control means for controlling the airflow regulating unit based on air feeding pressure and air discharging pressure detected by the air feeding pressure sensor and the air discharging pressure sensor, when disproportion henomenon occurs between feeding airflow and discharging airflow. Thereby, even when disproportion henomenon occurs between feeding airflow and discharging airflow due to external factors, proportion of the same can be acquired immediately, so that it is possible to heat exchange sufficiencily in an electric-heat exchanger between air outdoor and indoor, and prevent unwell feeling of a user due to abrupt change of the temparature indoor during air exchanging operation.

Description

technical field [0001] The present invention relates to an air conditioner and a control method for preventing the efficiency of an electric heat exchanger from being reduced when the supply air volume and the exhaust air volume vary due to external factors. Background technique [0002] In a general air conditioner having a ventilation function, as shown in FIG. 1 , an air duct 3 is connected between an indoor unit 1 and an outdoor unit 2 . One of the air ducts 3 is an exhaust passage for exhausting indoor air to the outside, and the other duct of the air duct 3 is an air supply passage for supplying external air into the room. [0003] The outdoor unit includes: an electric heat exchanger for heat exchange between outdoor air and indoor air; an air supply fan arranged on the way of the air supply channel for sucking in external air and supplying it indoors; an exhaust fan arranged on the way of the exhaust channel. An air fan is used to draw in room air and exhaust it to ...

AI Technical Summary

Problems solved by technology

At this time, if the supply air volume is too large, the heat exchange between the indoor air discharged from the electric heat exchanger and the outdoor air sucked into the room will not be sufficient.

[0008] Therefore, when the indoor temperature is higher than the outside temperature, the cold outside air may not be supplied into the room in a state of sufficiently heat-exchanging with the indoor air, and when the outside temperature is higher than the indoor temperature, the hot outside air may not communicate with the indoor air. The air is supplied into the room in a state of sufficient heat exchange, so not only is it difficult to maintain the indoor temperature at the set temperature, but also the user feels uncomfortable due to the sudden change of the indoor temperature

Images