Controlling method of air-conditioner

Abstract

In drying the interior of an indoor unit, room humidity (Rh) is detected by a humidity sensor, and a drying operation cycle, in which after first heating operation, which is weak heating operation in which a compressor included in a refrigerating cycle is operated at a low rotational speed, has been performed for a predetermined period of time, second heating operation, which is heating operation close to air blowing operation in which the compressor is stopped, is performed for a predetermined period of time, is repeated a predetermined number of times according to the room humidity (Rh). Thus, the indoor unit's interior can be dried properly without occurrence of dew condensation therein.

Description

technical field [0001] The present invention relates to a control method of an air conditioner, and more particularly, to an air conditioner provided with an internal dry operation mode for drying the interior of the indoor unit in order to prevent bacteria and unpleasant odors from being generated inside the indoor unit machine control method. Background technique [0002] The main operation modes of air conditioners using heat pump systems are heating operation mode and cooling operation mode. In the case of cooling operation mode and dehumidification operation mode (dry operation mode), the indoor heat exchanger in the refrigeration cycle is attached There is condensation. [0003] Usually, when the condensed water is discharged to the outside through the drain pan, it may not be completely discharged, and there will be condensed water remaining in the drain pan after the operation stops. [0004] In this way, dust, etc. will adhere to the remaining condensed water, and...

AI Technical Summary

Problems solved by technology

For example, in a state of high humidity, if the drying operation is only performed for a short period of 3 minutes, it is difficult to completely dry the inside of the indoor unit

[0009] In addition, since the state inside the indoor unit varies depending on the operating time of the cooling operation or the dehumidification operation, even if it is used together with the heating operation, if the heating operation time is fixed, the indoor unit may run dry or more than necessary. time, or on the contrary, sometimes the dry running time inside the indoor unit is insufficient

[0010] In particular, when the drying operation exceeds the necessary time, it is disadvantageous from the viewpoint of energy saving. Conversely, if the drying operation time is insufficient, bacteria will grow and unpleasant odors will be generated.

[0011] In addition, in the invention described in the above-mentioned Japanese Patent Laid-Open No. Heisei 10-62000, since the heating operation is performed after the cooling operation, the humidified air with a relative humidity of about 100% is blown from the indoor unit, causing the user to feel uncomfortable. bad feeling

In addition, since the humidified air is blown out, there is a risk of dew condensation inside the indoor unit.

Moreover, since the heating operation time is fixed, the invention described in the above-mentioned Japanese Patent Publication No. Heisei 9-126528 has the same problem.

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