Phase control system and its control method for air conditioner

Abstract

A phase control system for an air-condition and a control method, in which, the system includes a detection part for detecting the phase of a supply of an indooir turned-on fan, a memory for storing the rising signal of the phase detection signal and the average time of high level pulse width, when the control part is turned on, it computes the error of the mean time of the high level pulse time and that stored in the memory and conducts switch of the RPM, the control method includes: 1, testing out the phase of a turned-on supply indoor, computing the rising time of a phase test signal and the mean time of high level pulse width, 2, computing the error of the mean time and that of the high level pulse width time of the phase test signal when the supply is turned on, 3, conducting RPM switch from the rising time of the phase test signal via the first delay time plus time point of the error time, which prevents indoor fan RPM of an air-condition from change.

Description

technical field [0001] The invention relates to a phase control system of an air conditioner and a control method thereof. Background technique [0002] Generally speaking, an air conditioner (air-conditioner) is used as a cooling room device for compressing, evaporating and condensing a predetermined refrigerant, so that it can exchange heat with the surrounding air through the evaporation operation of the above refrigerant, and use the fan to transfer the above-mentioned through heat exchange. The resulting cold air is exhausted into the room. [0003] Recently, a dual-purpose air conditioner for cooling and heating rooms with the function of heating the room has also been introduced. In the above-mentioned dual-purpose air conditioner for cooling and heating rooms, the compression, evaporation, and condensation cycles of the above-mentioned refrigerant are used in reverse, and the refrigerant and the surrounding air are exchanged for heat through the condensation operatio...

AI Technical Summary

Problems solved by technology

[0006] At this time, the RPM of the above-mentioned motor will fluctuate due to the error that occurs at the rising time (rising) of the phase detection signal corresponding to the IC characteristics that determine the waveform width of the above-mentioned phase detection signal.

[0007] When the RPM of the phase control motor of the above-mentioned air conditioner changes, it will reduce the cooling / heating operation ability of the air conditioner, and the above-mentioned phase control motor will not be driven accurately, or cannot be adjusted to the rotation intensity and air volume set by the user.

Images