Qingdao Haier Air Conditioner General Corp., Ltd.

Beibei Xu

Juke Liu

Fei Wang

Yu Fu

Mingjie Zhang

Wenming Xu

Rongbang Luo

Guojing Xu

Shuang Ding

Junjun Yuan

Yongfu Cheng

Bo Li

Li Guo

Lin Ma

Baohua Gao

Huihua Wang

Jinlong Liu

Xiangjun Li

Jian Miao

Zhiqiang Ren

Xingyu Lv

Keqiang Xiao

Deliang Ren

Yongxiang Yao

Qiuli Kou

Qinyao Xu

Weipin Shi

Yuntao Liu

Guangpeng Liu

Renyan Cao

Jinsheng Dong

Juan Liu

Provided is a control method on electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; comparing the real-time running frequency of compressor with a first set frequency; if the real-time running frequency is greater than or equal to the first set frequency, obtaining an integral coefficient of the PID algorithm according to a first set rule; if the real-time running frequency is less than the first set frequency, obtaining an integral coefficient of the PID algorithm according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a second set rule, or according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a third set rule, wherein the selection is based on whether the air conditioner is working in cooling mode or in heating mode; performing a PID control on the electronic expansion valve by an error of the difference between real-time exhaust temperature and a set target exhaust temperature. The method realizes an accurate and stable control on electronic expansion valve opening amount.

Method of adjusting electronic expansion valve of outdoor unit of air-conditioner

A method for controlling the heating operation of an air conditioner. The method comprises: an air conditioner executing a heating operation, and acquiring an indoor temperature; if the indoor temperature is not greater than the first indoor temperature threshold value, executing fuzzy control; according to the difference in temperature between the indoor temperature and a set target indoor temperature, carrying out room temperature PID calculation so as to acquire a first target frequency; acquiring a coil temperature of an indoor heat exchanger, and if the coil temperature is greater than a set target coil temperature, determining the first target frequency to be an indoor unit frequency; otherwise, increasing the current operation frequency of a compressor so as to obtain a second target frequency, selecting the larger value of the first target frequency and the second target frequency, and determining the larger value to be the indoor unit frequency; controlling the compressor of the air conditioner according to the indoor unit frequency; and while executing dual PID control, according to the coil temperature, controlling electrical heating. Further disclosed is an apparatus for controlling the heating operation of an air conditioner. By means of the method and apparatus, the problem of heating being uncomfortable due to the fact that existing air conditioners are slow to provide heating can be solved.

Method and apparatus for controlling heating operation of air conditioner

A heating mode control method of an air conditioner, comprises: obtaining an indoor temperature and calculating the difference between the indoor temperature and an indoor target temperature to obtain an indoor temperature difference as air conditioner running at heating mode; performing a coil temperature control process as the indoor temperature difference in a set indoor temperature difference range, wherein the coil temperature control process including: obtaining an indoor coil temperature and controlling the frequency of the compressor according to the indoor coil temperature and a coil target temperature. The application of the method can achieve the purpose of improving the heating effect by increasing the outlet air temperature, thus improving the heating performance of an air-conditioner.

Control method for heating operation of air-conditioner based on coil temperature and indoor fan speed

Provided is a control method for an electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; retrieving a target exhaust temperature according to the real-time running frequency in a preset relation in which each available target exhaust temperature is paired with a single real-time running frequency, wherein the target exhaust temperature retrieved being defined as a first target exhaust temperature; defining a sum of the first target exhaust temperature and a set compensation temperature as a second target exhaust temperature, wherein the set compensation temperature is determined by the real-time outdoor environment temperature; and performing a PID control on opening amount of the electronic expansion valve based on a deviation that is a difference between the real-time exhaust temperature and the second target exhaust temperature. The method achieves an accurate and stable control on opening amount of electronic expansion valve in air conditioner.

Method of controlling electronic expansion valve of air-conditioner

An air conditioner heating mode control method includes: obtaining an indoor temperature and comparing the indoor temperature with a first indoor temperature threshold as an air conditioner running at the heating mode; performing a dual PID control process if the indoor temperature is less than or equal to the first indoor temperature threshold. The dual PID control process obtains an indoor temperature difference; performs a PID calculation according to the indoor temperature difference to obtain a first target frequency; obtains a coil temperature difference; performs a PID calculation according to the coil temperature difference to obtain a second target frequency; compares the first and second target frequencies; and performs a frequency control on the compressor in which the greater one between the first target frequency and the second target frequency is used as the target frequency. The present invention includes an air conditioner heating mode control device.

Heating control method and device for air conditioner

Provided is a control method on electronic expansion valve in air conditioner, which comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; if the air conditioner working in cooling mode, using a first set rule or a second set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a first set outdoor environment temperature; if the air conditioner working in heating mode, using a first set rule or a third set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a second set outdoor environment temperature; performing a PID control on the electronic expansion valve by using an error of the difference between real-time exhaust temperature and a set target exhaust temperature. The method realizes an accurate and stable control on opening amount of electronic expansion valve in air conditioner.

Method of adjusting electronic expansion valve of air conditioner

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Qingdao, China

Beibei Xu