Control method and device for air conditioner and air conditioner

Abstract

The invention discloses a control method and device for an air conditioner and the air conditioner. The control method includes the steps of obtaining the set humidity of an indoor unit and the indoor environment humidity; calculating the humidity difference value between the set humidity and the environment humidity, and matching the humidity difference value with the preset humidity difference section to generate matching results; and according to the matching results, controlling fans of a plurality of heat exchange and air supply units to be operated at low speed or medium speed and expanding the opening degree of expanding valves. According to the control method, when the air conditioner is operated in a refrigeration and dehumidification mode, the opening degree of the expanding valves corresponding to different air outlets can be adjusted according to the indoor environment humidity, and therefore the air conditioner can meet the target needs of users for refrigeration and dehumidification simultaneously.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a control method and device for an air conditioner and an air conditioner. Background technique [0002] Most of the air-conditioning products on the market now only have a set of circulation system, in which only a single number of evaporators, condensers, expansion valves and other main components are installed, and air-conditioning functions such as refrigeration and dehumidification need to rely on this circulation system to complete. In the actual use process, the existing air-conditioning products cannot achieve the optimal operation status of multiple functions such as cooling and dehumidification at the same time. The required temperature conditions, when the indoor temperature is low and the humidity is high, it cannot meet the requirements of blowing without cooling and dehumidification, or when the temperature is high and the humidity is high, it cannot quickl...

AI Technical Summary

Problems solved by technology

[0002] Most of the air-conditioning products on the market now only have a set of circulation system, in which only a single number of evaporators, condensers, expansion valves and other main components are installed, and air-conditioning functions such as refrigeration and dehumidification need to rely on this circulation system to complete. In the actual use process, the existing air-conditioning products cannot achieve the optimal operation status of multiple functions such as cooling and dehumidification at the same time. The required temperature conditions, when the indoor temperature is low and the humidity is high, it cannot meet the requirements of blowing without cooling and dehumidification, or when the temperature is high and the humidity is high, it cannot quickly meet the problems of cooling, cooling and dehumidification at the same time

[0003] At the same time, in a large indoor environment with a large area, users in different areas have differentiated refrigeration or dehumidification requirements, and the existing air-conditioning products with a single circulation system often cannot meet the above-mentioned requirements.

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