Tencent Technology (shenzhen) Company Limited

Gree Electric Appliances, Inc. of Zhuhai

Gree Electric Appliances (wuhan) Co., Ltd

Wenhao Huang

Xiaolong Zhang

Chao Zhou

Wen Zha

Tao Feng

Limin Li

Junhong Yan

Yonglong Wei

Peng Cao

Mengmeng Jin

Lifang Cen

Shiqiang Zhu

Chu Wang

Huajie Li

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

Method and server system for user login verification are disclosed. The method includes: obtaining a verification request from a first device for an account operation requested by a user using a first account; identifying, from the server system, usage history data associated with the first account, including data regarding usage of the first account on the first device; determining, in accordance with the data regarding the usage of the first account on the first device and one or more predetermined usage history criteria, whether the account operation associated with the first account on the first device is safe; and in accordance with a determination that the account operation associated with the first account on the first device is not safe, initiating a verification process based on a second device that qualifies as being safe for the account operation.

Method and system for verifying an account operation

Growing community of inventors

Guangdong, China

Wenhao Huang