Patents Assigned to Gree Electric Appliances Inc. of Zhuhai
  • Patent number: 10356962
    Abstract: The invention discloses a power electronic device cooling system, which includes an air conditioning unit, a coolant pump (31), a bypass throttling element (32) and a cooler. The coolant pump (31) takes liquid from a first condenser (13) of the air conditioning unit, a liquid coolant enters the cooler after being throttled by the bypass throttling element (32), the low-temperature coolant cools a power electronic device at the cooler, and the coolant enters an evaporator (11) of the air conditioning unit to finish a cooling cycle after flowing out of the cooler. The power electronic device cooling system has a good cooling effect, and is high in cooling efficiency, small in equipment size and low in noise, and moreover, the power electronic device may be located in a sealed environment and prevented from influence of dust, and is internally clean and long in operation life.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: July 16, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hongbo Li, Hua Liu, Zhiping Zhang, Yu Zhou, Huaican Liu
  • Patent number: 10345011
    Abstract: The invention discloses a refrigeration device, including: a first compressor unit (101), an indoor heat exchanger (3) and an outdoor heat exchanger (2), sequentially communicated; a first throttle device (401) and a second throttle device (402), sequentially connected in series; and an air supply device (5), provided between the first throttle device (401) and the second throttle device (402). The refrigeration device further includes a second compressor unit (102). An air intake port (B) of the second compressor unit (102) is communicated with an outlet of the outdoor heat exchanger (2). An outlet (E) of the second compressor unit (102) is communicated with the air supply port (C) of the first compressor unit (101) and an air exhaust port (D) of the first compressor unit (101) by means of a three-way valve (10), respectively.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: July 9, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Xiangfei Liang, Hui Huang, Bo Zheng, Jinsheng Fang, Boliang Huang, Rong Zhuang
  • Publication number: 20190207389
    Abstract: The present invention provides a control device for a direct-current (DC) microgrid and a control method thereof, and a DC microgrid system. The control device of a DC microgrid comprises a detection module configured for detecting a voltage change rate of the DC bus, and a regulation module configured for regulating energy compensation by the energy compensation means to the DC bus based on the voltage change rate of the DC bus that is detected by the detection module. In the control device for a DC microgrid provided by the present invention, the detection module detects in real time the condition of voltage change of the DC bus, and the control module regulates in real time the energy compensation by the energy compensation means to the DC bus based on the result detected by the detection module, such that stability of voltage of the DC bus is increased, and the DC microgrid can be operated stably.
    Type: Application
    Filed: April 24, 2017
    Publication date: July 4, 2019
    Applicant: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Wenqiang TANG, Shugong NAN, Meng HUANG
  • Patent number: 10330350
    Abstract: Provided herein is a compression system including a compressor, an intermediate air compensation pipeline, and an air compensation valve disposed on the intermediate air compensation pipeline. According to a flow direction of a refrigerant, a first pressure detection device and a first temperature detection device are disposed at the inlet end of the air compensation valve on the intermediate air compensation pipeline; a second temperature detection device is disposed at the outlet end of the air compensation valve. The system also includes a second pressure detection device and a third temperature detection device disposed on an exhaust pipeline of the compressor.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: June 25, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Huan Zhao, Feng Tan, Pengfei Li, Youxuan Liang
  • Patent number: 10323653
    Abstract: The invention discloses a centrifugal compressor. The centrifugal compressor includes multiple stages of compression units which are communicated in sequence. Each stage of compression unit includes a diffusion cavity (1) and a diffusion adjustment device, wherein the diffusion adjustment device includes a movable member (21) configured to change a radial flow area of the diffusion cavity (1) provided in correspondence thereto, the movable member (21) being movably provided in an axial direction of the centrifugal compressor. The invention also discloses a centrifugal unit having the centrifugal compressor. The movable member of each stage of compression unit of the centrifugal compressor changes the radial flow area of the diffusion cavity of this stage of compression unit, thereby effectively reducing the possibility of surging.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: June 18, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hongxing Wang, Zhiping Zhang, Ruixing Zhong, Nan Jiang, Rong Xie, Caiyun Jiang, Jianfei Liu, Yuhui Chen
  • Patent number: 10317118
    Abstract: A variable refrigerant volume system includes: a compressor; a four-way valve; an indoor unit; a liquid tube, the first end thereof being connected to the indoor unit, the second end thereof being connected to the third valve port of the four-way valve, and a condenser being provided on the liquid tube; a low pressure air pipe, the first end thereof being connected to the indoor unit, and the second end thereof being connected to the fourth valve port of the four-way valve; a refrigerant adjustment tank, the first port thereof being connected to the liquid tube, the second port thereof being connected to the low pressure air pipe, and the third port thereof optionally communicating with the liquid tube or the low pressure air pipe.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: June 11, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Wenjie Dai, Shiqiang Zhang, Yihe Zhang, Jianguo Xiong, Kai Yu, Benyong Bao, Weiguo Li
  • Patent number: 10309705
    Abstract: Described is a two-stage compression air conditioning system and a method of controlling gas replenishment thereof. The two-stage compression air conditioning system includes a two-stage compressor and a flash evaporator, wherein a first port of the flash evaporator is connected to one end of a stop valve by a first pipeline and the other end of the stop valve is connected to a first gas intake of the two-stage compressor by a second pipeline. The method of controlling gas replenishment includes: obtaining a first temperature value and an intermediate pressure value in the first pipeline, and a second temperature value in the second pipeline; and controlling the stop valve according to the first temperature value, the intermediate pressure value and the second temperature value.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: June 4, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Huan Zhao, Feng Tan, Pengfei Li, Youxuan Liang
  • Patent number: 10302087
    Abstract: A compressor exhaust structure includes a machine body, an exhaust bearing seat provided at an exhaust end of the machine body and an oil separating barrel covering the exhaust bearing seat, the exhaust bearing seat is provided with a first exhaust chamber, the machine body is provided with a second exhaust chamber, a third exhaust chamber is formed between the exhaust bearing seat and an inner wall of the oil separating barrel, the first exhaust chamber is in fluid communication with the second exhaust chamber, the second exhaust chamber is in fluid communication with the third exhaust chamber, and the third exhaust chamber is in fluid communication with a discharge port of the oil separating barrel. The compressor exhaust structure increases the flow path of the gas flow, facilitates the insulation of gas flow noise and reduces gas flow pulsation.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: May 28, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Qiaoming Yang, Rihua Li, Tianyi Zhang, Guanghui Xia, Gongsheng Tan, Weijun Lin, Hao Long, Yushi Bi, Yanhai Peng, Kang Xu
  • Patent number: 10302097
    Abstract: The invention discloses a centrifugal compressor. The centrifugal compressor comprises: a housing (10), provided with a mounting chamber (11), a thread section (12) being provided on a side wall of the mounting chamber (11); an adjusting piece (20), mounted in the mounting chamber (11), the adjusting piece (20) being provided with threads adapting to the thread section (12); a driving piece (30), mounted in the mounting chamber (11) and configured to drive the adjusting piece (20) to move forwards or backwards along the thread section (12); and an adjustable diffuser (40), fixedly connected to the adjusting piece (20). The invention also discloses a centrifugal water chilling unit having the centrifugal compressor. The centrifugal compressor and the centrifugal water chilling unit can solve the problem that the adjustable diffuser easily inclines and is stuck, thereby greatly improving the reliability of the centrifugal compressor.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: May 28, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Nan Jiang, Ruixing Zhong, Caiyun Jiang, Rong Xie, Hongxing Wang, Jianfei Liu, Yuhui Chen
  • Patent number: 10302086
    Abstract: An exhaust bearing seat, a screw compressor and an air-conditioning unit are provided. The exhaust bearing seat is provided with a discharge port, wherein an opening of the discharge port is orientated in such a way that, if the exhaust bearing seat is sheathed in a housing, gas exhausted from the discharge port has a component which rotates along an inner wall of the housing and around an axial direction of the housing. The discharge port is able to guide the gas flow to rotationally flow along the inner wall of the housing body and around the axial direction of the housing, which extends the flow path of the gas flow inside the housing, and facilitates the reduction of noise of the gas flow pulsation.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: May 28, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Qiaoming Yang, Rihua Li, Tianyi Zhang, Guanghui Xia, Gongsheng Tan, Weijun Lin, Hao Long, Yushi Bi, Yanhai Peng, Kang Xu
  • Patent number: 10280942
    Abstract: The invention discloses a centrifugal compressor and a water chilling unit having the same. The centrifugal compressor includes an impeller (2), a diffuser (3), a volute (8) and an exhaust diffuser pipe (9), the diffuser (3) including a pressurization passage, air flowing through the impeller (2) entering an inlet of each pressurization passage, the volute (8) being configured to collect the air pressurized by the diffuser (3), the exhaust diffuser pipe being communicated with the volute, and an extending direction of the exhaust diffuser pipe inclining downwards with respect to a horizontal plane. The extending direction of the exhaust diffuser pipe communicated with the volute inclines downwards with respect to the horizontal plane, so that noise and airflow losses of high-temperature and high-pressure air in the exhaust diffuser pipe expelled from the centrifugal compressor due to bending of the pipe can be reduced, and the noise can be effectively reduced.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 7, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Nan Jiang, Ruixing Zhong, Caiyun Jiang, Rong Xie, Hongxing Wang, Jianfei Liu, Yuhui Chen
  • Publication number: 20190131205
    Abstract: The disclosure relates to the field of electronic elements, and discloses an Insulated Gate Bipolar Transistor (IGBT) module assembly which comprises a cooling plate and an IGBT module fixedly connected to the cooling plate, wiring terminals are arranged at an end face of the IGBT module, which is away from the cooling plate, the IGBT module comprises a side face adjacent to the end face, and the side face and the cooling plate form a water guiding groove. In the disclosure, the side face and the cooling plate form the water guiding groove, and a great amount of condensed water collected on the cooling plate can be guided to flow out through the water guiding groove instead of flowing to the end face of the IGBT module, on which the wiring terminals are arranged.
    Type: Application
    Filed: April 1, 2017
    Publication date: May 2, 2019
    Applicant: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Jing Wang, Shiyong Jiang, Yu Zhang, Keqin Liu
  • Patent number: 10247449
    Abstract: The present disclosure provides a variable-capacity compressor, a variable-capacity two-stage compression system and a control method thereof. The compression system includes a compressor, wherein the compressor includes a low pressure cylinder and a high pressure cylinder connected in series, wherein the low pressure cylinder includes at least two cylinders connected in parallel. The compression system further includes a control mechanism that can control at least one of the at least two cylinders connected in parallel to perform full-load and/or no-load operation.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: April 2, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Huan Zhao, Jun Shen, Feng Tan, Youxuan Liang, Pengfei Li
  • Patent number: 10234182
    Abstract: Provided are a flash tank and an air conditioner having the same. The flash tank includes a flash tank liquid inlet (11) and a flash tank liquid outlet (12). The flash tank further includes: a plurality of flash chambers, wherein the flash chambers are arranged in sequence, every two adjacent flash chambers communicating; and a plurality of air replenishment openings (14), the air replenishment openings (14) and the flash chambers corresponding one to one and communicating with each other. The flash tank liquid inlet (11) communicates with the first flash chamber of the flash chambers, and the flash tank liquid outlet (12) communicates with the last flash chamber of the flash chambers. The flash tank may meet an air replenishment demand of a multi-stage compressor.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: March 19, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Tang Zhou, Yu Zhou, Chenguang Wang, Juan Wang, Xianquan Liu, Cui Pan, Liang Wan, Chengzhao Jin
  • Patent number: 10228174
    Abstract: Provided is a compressor over-load protection control method. The method includes that: the state of a compressor is detected (S101); it is judged whether the compressor is under over-load protection (S102); and when the compressor is under the over-load protection, fluorine shortage protection is shielded (S103). A compressor over-load protection control apparatus includes: a detection unit (10), configured to detect the state of a compressor; a judgement unit (20), configured to judge whether the compressor is under over-load protection; and a shielding unit (30), configured to shield fluorine shortage protection when the compressor is under the over-load protection. Through the method and apparatus, the problem in the relevant art that a fluorine shortage false alarm is easily triggered is solved, thereby achieving the effect of preventing the fluorine shortage false alarm when the compressor is under the over-load protection.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: March 12, 2019
    Assignee: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Wei Liu, Yongchao Liang, Peili Li, Ding Yu, Yuping Gao, Pengyu Chen, Yonghong Luo, Zuqing Chen, Qiyang Peng, Chun Wang, Jianqun Yang
  • Patent number: 10211687
    Abstract: A stator and a rotor are mounted inside a case of a permanent magnet motor, and separate the inner cavity of the case into a first inner cavity and a second inner cavity. An air gap is formed between an inner circle surface of the stator and an outer circle surface of the rotor. Axial ventilation holes in communication with the first inner cavity and with the second inner cavity are disposed in teeth of a stator core. The rotor comprises a rotor core and rotor pressing rings disposed in an axial direction at both sides of the rotor core. A partition is disposed between the rotor core and at least one of the rotor pressing rings. An outer edge of the partition extends into the air gap, thus enhancing the air blocking effect and realizing a higher cooling efficiency.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: February 19, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Zhao Fan, Yabin Ding, Ying Chen, Huaican Liu
  • Patent number: D845922
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: April 16, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Honglei Lv, Huanlong Wu, Yubin Li, Jianyao Lu, Xing Xie
  • Patent number: D846598
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: April 23, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Jingjing Wang, Luan Qin, Huanlong Wu, Qijian Yang, Ye Yuan, Ke Mu
  • Patent number: D846722
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: April 23, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Ke Mu, Luan Qin, Jingjing Wang, Huanlong Wu, Huihui Wang, Sha Li, Caihua Peng, Zhaigu Fu
  • Patent number: D852440
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: June 25, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Zhangquan Huang, Huanlong Wu, Liang Li, Dongchang Yi, Guojun Lv