Gree Electric Appliances, Inc. of Zhuhai

Gree Electric Appliances (wuhan) Co., Ltd

Qunbo Liu

Ke Xu

Longfei Li

Yi Ni

Kai Yu

Yaopeng Rong

Hua Liu

Handong Xue

Yingsheng Fu

Zhongqiu Zhang

Lin Wei Yang

Jie Tang

Tao Wang

Mingzhu Dong

Hui Zhang

Fang Wang

Jianming Tan

Shaobin Li

Weiqiang Li

Yuhai Su

Youfu Xie

Peigang Song

Hexin Liu

Zhenjiang Zhao

Zebin Chen

Chun Huang

Yaodong Li

Lin Yang

Xinliang Wang

Ganbin Chen

The disclosure discloses a method and a device for controlling cylinder switching of a compressor, a unit and an air conditioning system. The method includes: determining whether the compressor needs to perform cylinder switching; if so, adjusting current operating frequency according to a system pressure difference so that both the adjusted operating frequency and the system pressure difference meet a cylinder switching condition of the compressor; and controlling the compressor to perform cylinder switching. At the moment, the system pressure difference and the operation frequency are stable, and would not interfere the compressor's maintaining of the single-cylinder or double-cylinder operation state, which guarantees the energy efficiency of the unit where the compressor is located, and improves the use experience of a user.

Compressor cylinder switching control method and device, unit and air conditioning system

A method for controlling the power-on or power-off of an air conditioner is provided. The method includes the following steps: determining whether a variable capacity compressor of the air conditioner is in a standby single-cylinder operation state before starting the air conditioner, where the variable capacity compressor is configured to be switchable between a single-cylinder operation state and a dual-cylinder operation state; if so, starting the air conditioner; if not, switching the variable capacity compressor to the standby single-cylinder operation state, and then starting the air conditioner. With this control method, regardless of whether the air conditioner is shut down because the power supply of the unit is cut off or because a power-off signal is received, the air conditioner can be started in a single-cylinder operation state in the next startup, so that the operation state of the cylinder is always determined when starting the air conditioner.

Method for controlling power-on or power-off of air conditioner

A method and a device for controlling a capacity change of a compressor, and a smart home appliance. The method includes: determining whether a capacity of the compressor is required to be changed; if yes, determining an intermediate frequency; changing the capacity of the compressor while maintaining the operating frequency of the compressor at the intermediate frequency; and the maintaining the operating frequency of the compressor at the intermediate frequency reduces a sudden change in output of the compressor after the changing the capacity.

Method and device for controlling capacity change of compressor, and smart home appliance

Disclosed are a variable capacity compressor operation mode determination method and device, a variable capacity compressor and an air conditioner. The variable capacity compressor operation mode determination method includes: detecting a current value of a compressor at present as A1 before switching an operation mode of the compressor; detecting the current value of the compressor at present as A2 after switching the operation mode of the compressor and reaching a preset time; comparing A1 and A2, determining that the switching of the operation mode of the compressor is successful when a ratio relationship between A1 and A2 satisfies a preset condition, and determining that switching of the operation mode of the compressor is failed when the ratio relationship between A1 and A2 dissatisfies a preset condition.

Variable capacity compressor operation mode determination method and device, variable capacity compressor, and air conditioner

Provided are a method and device for controlling electric heating of an air conditioner compressor. The method may include: first request information is transmitted to a corresponding database server at an interval of a second preset duration, as to acquire weather forecast data of an area where an air conditioner is located within an upcoming third preset duration; the weather forecast data returned by the database server is received and stored in a built-in database of the air conditioner; it is monitored to learn that a shutdown duration of the air conditioner compressor exceeds a first preset duration, as to acquire the weather forecast data stored in the built-in database of the air conditioner; and a control strategy is generated according to the weather forecast data, to control the air conditioner compressor to start and stop electric heating.

Method and device for controlling electric heating of air conditioner compressor

The present disclosure discloses a networking method device and terminal for an air conditioning unit. The networking method includes: detecting an outside ambient temperature after a target networking indoor unit is started; determining a target operating mode of the target networking indoor unit according to the outside ambient temperature; detecting a system pressure value of a multi-split air conditioning system after an operating duration of the target networking indoor unit in the target operating mode is greater than a preset operating duration; and determining whether the target networking indoor unit belongs to a target networking system according to the system pressure value.

Networking method and apparatus for air conditioning unit, and terminal

The present disclosure has disclosed an water pump of an air conditioner as well as a method and device for controlling the same, wherein the method for controlling an water pump of an air conditioner comprises: obtaining a state of a liquid level switch of the air conditioner, a state of operation of the air conditioner and an outdoor ambient temperature; and determining a turn-on timing of the water pump of the air conditioner according to the state of the liquid level switch of the air conditioner, the state of operation of the air conditioner and the outdoor ambient temperature obtained. The present disclosure solves the problem that the turn-on time of the water pump of the air conditioner in the prior art is not smart enough, so as to make the turn-on time of the water pump of the air conditioner more intelligent, whilst improving the safety of the water pump of the air conditioner is improved, and saving the energy.

Water pump of an air conditioner as well as method and device for controlling the same

An oil return method for multi-split air conditioner in heating comprises steps of: S, adjusting operation frequency fof a compressor () to a first preset oil return frequency f, and simultaneously, adjusting open degree Sof each indoor throttling element () to a preset oil return open degree; S, measuring operation parameters of the air conditioner; S, judging whether the air conditioner operates abnormally, jumping to Step Sif so, or jumping to Step Sif not; S, exiting from oil return process, adjusting the operation frequency fof the compressor () to a second preset oil return frequency f, judging whether the air conditioner operates abnormally, existing from the oil return process if so, or jumping to Step Sif not; S, ending the oil return process when oil return time reaches the oil return time t

Oil return method for multi-split air conditioning in heating

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Zhuhai, China

Qunbo Liu