Gree Electric Appliances, Inc. of Zhuhai

Gree Electric Appliances (wuhan) Co., Ltd

Mengmeng Jin

Chao Zhou

Limin Li

Shiqiang Zhu

Tao Feng

Peng Cao

Wenhao Huang

Hua Liu

Shiqiang Zhang

Lianfa Wu

Chu Wang

Huajie Li

Tian Qiu

Chuantao Shen

The disclosure provides a defrosting control method and device and a multi-split air conditioner. The defrosting control method including: controlling the multi-split air conditioner to enter a continuous heating and defrosting mode under a condition that any external unit meets the preset defrosting condition; detecting sequentially whether the each external unit in the multi-split air conditioner is currently in a frostless state; marking directly a currently detected external unit as having finished defrosting under a condition that the currently detected external unit is currently in a frostless state; defrosting the currently detected external unit under a condition that the currently detected external unit is currently in a frosted state, and marking the currently detected external unit as having finished defrosting after defrosting; and controlling the multi-split air conditioner to exit the mode under a condition that all the external units are marked as having finished defrosting.

Defrosting control method and device, and multi-split air conditioner

A continuous heating control system and method, and an air-conditioning device. The system includes a defrosting solenoid valve () arranged on a bypass pipeline, wherein one end of the bypass pipeline is connected to an oil separator (), and the other end of the bypass pipeline is connected to an outdoor heat exchanger (); and a heating structure which is arranged at the bottom of a gas separator () and used for heating the gas separator ().

Continuous heating control system and method, and air-conditioning device

A heat pump system and a control method therefor. The heat pump system includes a compressor; an indoor heal exchanger; an outdoor heat exchanger, including a first heat exchange portion and a second heat exchange portion, wherein a flow path switching device is provided between the first heat exchange portion and the second heat exchange portion to disconnect or communicate the first heat exchange portion and the second heat exchange portion; a first four-way valve; and a second four-way valve, configured to enable a high-temperature refrigerant to be input into the first heat exchange portion in a heating mode, so as to enable the heat pump system to operate in a heating and deicing mode.

Heat pump system and control method therefor

An air-conditioner outdoor unit and a control method for a fan () of an air-conditioner outdoor unit; the air-conditioner outdoor unit of the present invention comprises a fan () and a deflector ring () that is sleeved on the outside of a vane () of the fan (); further comprised are a vane stopping device (), a wind speed measuring device (), and a control system. The vane stopping device () is disposed on the deflector ring (), is connected to the control system, and may cause a vane () that is passively rotating to stop rotating; the wind speed measuring device () is connected to the control system, and is used for detecting the wind speed flowing through the vane (), the wind speed comprising a wind speed value and a wind speed direction; the control system controls the vane stopping device () to start and shut down according to the wind speed that is detected by the wind speed measuring device (), and controls actual start-up frequency of the fan () according to the wind speed that is detected by the wind speed measuring device (). The air-conditioner outdoor unit and the control method for the fan () of the air-conditioner outdoor unit may compensate the rotational speed of the fan (), and ensure the start-up success rate of the fan ().

Air-conditioner outdoor unit and control method for fan of air-conditioner outdoor unit

Growing community of inventors

Zhuhai, China

Mengmeng Jin