Patents Assigned to Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
  • Publication number: 20190190332
    Abstract: A rotor structure includes a rotor core and magnetic steel sheets. A shaft hole fixedly connected to a rotary shaft and an even number of magnetic steel grooves are formed on the rotor core along a rotation axis thereof. The magnetic steel grooves are symmetrically distributed around a periphery of the shaft hole in the rotor core, and the magnetic steel sheets are correspondingly installed in the magnetic steel grooves on a one-to-one basis. First through grooves extending axially and depressed radially are symmetrically distributed and formed around an inner surface of the shaft hole of the rotor core. First circulation holes are enclosed between the first through grooves and an outer surface of the rotary shaft. A motor includes a stator and the rotor structure arranged in an inner hole of the stator. A compressor includes the motor.
    Type: Application
    Filed: September 28, 2017
    Publication date: June 20, 2019
    Applicant: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Jinfei SHI, Man WU, Zeyin Ml, Yong XIAO
  • Publication number: 20190085902
    Abstract: A magnetic levitation bearing assembly, including: a magnetic levitation bearing, a shell, and a working clearance adjusting device; the magnetic levitation bearing includes a first iron core, a second iron core and a thrust disk; the working clearance adjusting device is arranged between a radial inner periphery of the shell and the thrust disk along the radial direction, and between the shell and the second iron core along the axial direction; an axial end of the working clearance adjusting device is abutted against the second iron core, a void gap is provided between the shell and the second iron core, an adjustment on the magnetic levitation bearing working clearance is made possible by altering the length between two axial ends of the working clearance adjusting device, such that the working clearance is consistent with a design value.
    Type: Application
    Filed: January 22, 2017
    Publication date: March 21, 2019
    Applicant: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Gao GONG, Yusheng HU, Xiaobo ZHANG, Jianning LIU, Fang ZHANG, Siyuan TIAN, Jinxin JIA, Changguang GUO, Guanghai LI, Qiong WEI
  • Patent number: 10209095
    Abstract: The present invention provides an eddy current sensor, comprising: a housing; a plurality of probes which are all disposed inside the housing, probing ends of the probes being all disposed at inner side of an exterior surface of the housing to avoid the probing ends of the probes from protruding out of the exterior surface of the housing. Because the probing ends of the plurality of probes are all located at the inner side of the exterior surface of the housing, the housing will protect the probes when the eddy current sensor is hit by an external force, thereby avoiding damage of the probes due to the impact, which reduces fault rate of the probes, enhances use reliability of the eddy current sensor, and prolongs service life of the eddy current sensor.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: February 19, 2019
    Assignee: Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
    Inventors: Yusheng Hu, Weicai Huang, Jiqing Geng, Zhichang Liu
  • Publication number: 20190048930
    Abstract: An axial magnetic bearing includes a bearing body and a protective device. The bearing body includes a stator and a rotor. The protective device includes a first assembly fixedly mounted relative to the stator and a second assembly fixedly mounted relative to the rotor. One of the first assembly and the second assembly includes a first stopping portion, and the other of the first assembly and the second assembly includes a second stopping portion and a third stopping portion. A part of the first stopping portion is axially located between the second stopping portion and the third stopping portion. A protection gap of the protective device is smaller than a working gap of the bearing body.
    Type: Application
    Filed: January 23, 2017
    Publication date: February 14, 2019
    Applicant: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Fang ZHANG, Yusheng HU, Xiaobo ZHANG, Jianning LIU, Gao GONG, Siyuan TIAN, Jinxin JIA, Changguang GUO, Guanghai LI, Jiuzhan SU, Chao ZHANG
  • Publication number: 20190036397
    Abstract: A synchronous reluctance motor rotor, including: a rotor core, wherein the rotor core includes a plurality of magnetic-flux barrier groups, and each magnetic-flux barrier group includes at least two magnetic-flux barriers provided at an interval in a radial direction of the rotor core; the rotor core further includes magnetic bridges, the magnetic bridges are disposed within the magnetic-flux barriers and connect inner surfaces of the magnetic-flux barriers with outer surfaces of the magnetic-flux barriers, and a distance between the magnetic bridges and an outer edge of the rotor core is no less than a predetermined distance.
    Type: Application
    Filed: January 23, 2017
    Publication date: January 31, 2019
    Applicant: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO. LTD. OF ZHUHAI
    Inventors: Tong TONG, Yusheng HU, Bin CHEN, Suhua LU
  • Patent number: 10151513
    Abstract: The invention discloses an expansion compressor apparatus and an air conditioner having the same, wherein the expansion compressor apparatus includes: an expansion cylinder, a compression cylinder, and a connecting shaft, an expansion cylinder air suction passage communicated with an air suction cavity of the expansion cylinder being provided on the expansion cylinder, the expansion compressor apparatus further includes: a control cylinder, the control cylinder being provided with a control cylinder air suction passage and a control cylinder air exhaust passage, both the control cylinder air suction passage and the control cylinder air exhaust passage being provided in a radial direction of the control cylinder, and a communication passage being provided between the control cylinder air exhaust passage and the expansion cylinder air suction passage. The apparatus effectively solves the problem in the prior art that a high-pressure fluid exerts an impact force in an axial direction on a fan-shaped cam.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: December 11, 2018
    Assignee: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Zhili Liang, Yusheng Hu, Jia Xu, Liping Ren
  • Publication number: 20180230981
    Abstract: A fluid machinery, a heat exchange equipment, and an operating method for the fluid machinery. The fluid machinery includes: an upper flange (50); a lower flange (60); a cylinder (20); a rotating shaft (10), the axis of the rotating shaft (10) being eccentric to the axis of the cylinder (20) and at a fixed eccentric distance; and a piston component (30), the piston component (30) being provided with a variable volume cavity (31). Because the eccentric distance between the rotating shaft (10) and the cylinder (20) is fixed, the rotating shaft (10) and the cylinder (20) rotate around the respective axes thereof during motion, and the position of the center of mass remains unchanged, so that the piston component is allowed to rotate stably and continuously when moving within the cylinder (20); and vibration of the fluid machinery is effectively mitigated.
    Type: Application
    Filed: June 1, 2016
    Publication date: August 16, 2018
    Applicant: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: ZHONGCHENG DU, JIA XU, LIPING REN, LINGCHAO KONG, SEN YANG, RONGTING ZHANG, SHEBING LIANG, LIYING DENG, JIAKUI XU, JINQUAN ZHANG, ZHENGLIANG SHI
  • Publication number: 20180097412
    Abstract: Disclosed are a permanent magnet motor rotor (110) and a permanent magnet synchronous motor (100). The permanent magnet motor rotor (110) comprises: a rotor core (111); tangentially magnetized main-pole permanent magnets (112), the main-pole permanent magnets (112) being disposed in a radial direction of the rotor core (111), the main-pole permanent magnets (112) being uniformly arranged in a circumferential direction of the rotor core (111), and the closest surfaces of any two adjacent main-pole permanent magnets (112) having same magnetic poles; and an auxiliary permanent magnet (113) being disposed in the radial direction of the rotor core (111), the auxiliary permanent magnet (113) being located between any two adjacent main-pole permanent magnets (112), so as to raise the operating point of the main-pole permanent magnet, thereby achieving the purpose that the demagnetization resistance capacity of the main-pole permanent magnet is improved, and the demagnetization risk is reduced.
    Type: Application
    Filed: November 22, 2017
    Publication date: April 5, 2018
    Applicant: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD OF ZHUHAI
    Inventors: Yong Xiao, Yusheng Hu, Bin Chen
  • Patent number: 9515526
    Abstract: A motor and a rotor thereof are provided. Taking the distance between the two endpoints of a permanent magnet of a motor rotor that are on the side away from the center of an iron core as the length L of the permanent magnet, and the distance between a line connecting the two endpoints of the permanent magnet that are on the side away from the center of the iron core and the center point on the side of the permanent magnet that is close to the centerline of the iron core as the width H of the permanent magnet, then H/L ? 1/10. By adjusting the relationship between the length L and width H of the permanent magnet, the air gap magnetic density of the permanent magnet can be effectively increased.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: December 6, 2016
    Assignees: Gree Electric Appliances, Inc. of Zhuhai, Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
    Inventors: Hui Huang, Wenming Zhang, Yong Xiao, Xueying Zeng, Huajie Chen, Dongsuo Chen, Yusheng Hu
  • Patent number: 9502934
    Abstract: A motor rotor includes an iron core and a permanent magnet arranged inside the iron core, wherein, a plurality of groups of mounting grooves are arranged in the iron core in a circumferential direction of the iron core, and each group of mounting grooves comprises two or more than two mounting grooves arranged at intervals in a radial direction of the iron core; and a plurality of groups of permanent magnets are provided, and each permanent magnet in each group of permanent magnets is correspondingly embedded in the corresponding mounting groove of each group of mounting grooves. A motor having the motor rotor is further provided, and the magnetic reluctance torque of the motor rotor is increased, thereby increasing the output torque of the motor and the efficiency of the motor.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: November 22, 2016
    Assignees: Gree Electric Appliances, Inc. of Zhuhai, Gree Green Refrigeration Technology Center Co. Ltd. of Zhuhai
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Patent number: 9502933
    Abstract: A permanent magnet synchronous electric machine includes a stator and a rotor. Multiple wire grooves are provided peripherally on the stator, coils are provided within the wire grooves, and a stator tooth is provided between adjacent wire grooves. Multiple magnetic groove sets are provided peripherally within the rotor, each of the magnetic groove sets includes at least two magnetic steel grooves, with permanent magnets placed within the magnetic steel grooves, and a magnetic tunnel formed between the magnetic steel grooves. Of two adjacent magnetic tunnels, an end of one magnetic tunnel is opposite a wire groove and an end of the other magnetic tunnel is opposite a stator tooth. The permanent magnet synchronous electric machine has a more steady output torque, and also reduces the noise and vibration provided during operation.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: November 22, 2016
    Assignees: Gree Electric Appliances, Inc. of Zhuhai, Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Patent number: 9502930
    Abstract: A motor rotor includes an iron core and permanent magnets provided inside the iron core. The iron core is provided with sets of mounting grooves on the iron core in the peripheral direction of the iron core, each set of mounting grooves having two or more mounting grooves provided intermittently in the radial direction of the iron core. There are sets of permanent magnets, the individual permanent magnet of each set of permanent magnets correspondingly being embedded into the individual mounting grooves of each set of mounting grooves; there is an island region between the outermost layer of mounting grooves and the periphery of the iron core, and an enhancing hole is provided in the island region, an enhancing rod being provided in the enhancing hole. A motor includes a motor stator and the motor rotor, with the motor rotor provided inside the motor stator.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: November 22, 2016
    Assignees: Gree Electric Appliances, Inc. of Zhuhai, Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Publication number: 20140191607
    Abstract: Disclosed is a motor rotor, comprising an iron core (10) and permanent magnets (20) provided inside the iron core (10). The iron core (10) is provided with sets of mounting grooves (30) on the iron core (10) in the peripheral direction of the iron core, each set of mounting grooves (30) comprising two or more mounting grooves (30) provided intermittently in the radial direction of the iron core (10). There are sets of permanent magnets (20), the individual permanent magnets (20) of each set of permanent magnets (20) correspondingly being embedded into the individual mounting grooves (30) of each set of mounting grooves; there is an island region (12) between the outermost layer of mounting grooves (30) and the periphery of the iron core (10), and an enhancing hole (13) is provided in the island region (12), an enhancing rod (60) being provided in the enhancing hole (13).
    Type: Application
    Filed: August 29, 2011
    Publication date: July 10, 2014
    Applicants: Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai, Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Publication number: 20140175932
    Abstract: Disclosed are a motor and a rotor thereof. Taking the distance between the two endpoints of a permanent magnet (20) of a motor rotor that are on the side away from the centre of an iron core (10) as the length L of the permanent magnet, and the distance between a line connecting the two endpoints of the permanent magnet that are on the side away from the centre of the iron core (10) and the centre point on the side of the permanent magnet that is close to the centreline of the iron core as the width H of the permanent magnet, then H/L?1/10. By adjusting the relationship between the length L and width H of the permanent magnet, the air gap magnetic density of the permanent magnet can be effectively increased, i.e. increasing the permanent magnetic flux of the rotor in the directions of the d axis and q axis. Hence, the utilization rate of the permanent magnet and the performance of the rotor can be improved without increasing the number of permanent magnets used.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 26, 2014
    Applicants: Gree Green Refrigeration Technology Center Co., Ltd.of Zhuhai, GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hui Huang, Wenming Zhang, Yong Xiao, Xueying Zeng, Huajie Chen, Dongsuo Chen, Yusheng Hu
  • Publication number: 20140167550
    Abstract: Disclosed are a motor rotor and a motor having same, wherein the motor rotor comprises an iron core (10) and permanent magnets (20) provided within the iron core (10), sets of mounting grooves (30) are provided in the peripheral direction of the iron core, with each set of mounting grooves comprising more than two mounting grooves (30) arranged intermittently in the radial direction of the iron core (10). The permanent magnets (20) are correspondingly embedded into the individual mounting grooves (30). The thickness of the permanent magnet (20) at the centre of the cross section thereof and perpendicular to the rotor axis is greater than the thickness at both ends thereof. The rotor optimizes the shape of the permanent magnets (20) and improves the efficiency of the motor.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 19, 2014
    Applicants: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI, GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Publication number: 20140167549
    Abstract: Disclosed is a motor rotor, comprising an iron core (10) and permanent magnets (20) provided inside the iron core (10). The iron core (10) is provided with sets of mounting grooves (30) in the peripheral direction of the iron core, each set of mounting grooves (30) comprising two or more mounting grooves (30) provided intermittently in the radial direction of the iron core (10). There are sets of permanent magnets (20), the individual permanent magnets (20) of each set of permanent magnets (20) correspondingly being embedded into the individual mounting grooves (30) of each set of mounting grooves. Disclosed is a motor comprising the above-mentioned motor rotor. The motor rotor increases the magnetic reluctance torque of the motor rotor and thus increases the output torque of the motor and the efficiency of the motor.
    Type: Application
    Filed: August 29, 2011
    Publication date: June 19, 2014
    Applicants: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI, GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Publication number: 20140152139
    Abstract: Disclosed is a permanent magnet synchronous motor comprising a stator (1) and a rotor (2), wherein the stator (1) is provided thereon with a plurality of wire slots (3) in a circumferential direction, the rotor (2) is provided therein with a plurality of sets of magnet slots (5) in a circumferential direction, with the wire slots (3) being provided therein with coils (4) and the sets of magnet slots (5) being provided therein with permanent magnets (7); the number of poles of the permanent magnets (7) on the rotor (2) is P, the spacing between two adjacent sets of magnet slots (5) is W, the tooth width of the stator (1) is Lc, and the number of the wire slots (3) on the stator (1) is S, wherein 3PW/LcS=K, and 0.15?K?0.85. The permanent magnet synchronous motor can reduce dependence on rare earth and improve the output torque of the permanent magnet synchronous motor.
    Type: Application
    Filed: August 31, 2011
    Publication date: June 5, 2014
    Applicants: Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai, Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang
  • Publication number: 20140145539
    Abstract: Disclosed is a permanent magnet synchronous electric machine, comprising a stator (1) and a rotor (2). A plurality of wire grooves (3) are provided peripherally on the stator (1), coils (4) are provided within the wire grooves (3), and a stator tooth (5) is provided between adjacent wire grooves (3). A plurality of magnetic groove sets (6) is provided peripherally within the rotor (2), each of the magnetic groove sets (6) comprising at least two magnetic steel grooves (7), with permanent magnets (8) placed within the magnetic steel grooves (7), and a magnetic channel (9) formed between the magnetic steel grooves (7). Of two adjacent magnetic channels (9), an end of one magnetic channel (9) is opposite a wire groove (3) and an end of the other magnetic channel (9) is opposite a stator tooth (5). The permanent magnet synchronous electric machine has a more steady output torque, and also reduces the noise and vibration provided during operation.
    Type: Application
    Filed: August 31, 2011
    Publication date: May 29, 2014
    Applicants: Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai, GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
    Inventors: Hui Huang, Yusheng Hu, Dongsuo Chen, Huajie Chen, Yong Xiao, Xueying Zeng, Wenming Zhang