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公开(公告)号：US20230138965A1
公开(公告)日：2023-05-04
申请号：US17917535
申请日：2021-04-06
申请人： Johnson Controls Air Conditioning and Refrigeration (Wuxi) Co., Ltd. , Johnson Controls Tyco IP Holdings LLP
发明人： Shengmei Yang , Li Wang , Kun Lin , Zhengxiang Yu
IPC分类号： F04C29/06 , F04C18/16 , F04C29/12 , F04C28/28 , F04C29/02 , F25B1/047 , F25B31/00 , F25B49/02
摘要： Disclosed is a screw compressor (100), comprising a screw compressor housing (101), a discharge cavity (113), at least one silencing channel, and at least one adjustment piston, wherein the discharge cavity (113) is defined by at least one part of the screw compressor housing (101); the at least one part of the screw compressor housing (101) defining the discharge cavity (113) forms a wall of the discharge cavity (113); at least one hole is provided in the wall of the discharge cavity (113); the at least one adjustment piston can be inserted into the at least one hole and move therein; the at least one silencing channel is formed by the at least one hole and the at least one adjustment piston, and the at least one silencing channel is in fluid communication with the discharge cavity (113); and the position of the at least one adjustment piston in the at least one hole determines the silencing length of the at least one silencing channel.
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公开(公告)号：US20230138342A1
公开(公告)日：2023-05-04
申请号：US17914904
申请日：2021-03-26
发明人： Simon CARGILL
IPC分类号： F04C2/12
摘要： A rotary positive displacement pump includes a main body rotationally supporting two parallel, axially extending, shafts with gears in constant mesh condition, such that the shafts rotate in opposite directions. A rotor case body is connected to a front side of the main body and has a stationary interior pumping cavity, fluid product inlet and outlet openings, and two cylindrical rotor case hubs each receiving internally one of the shafts. A pair of rotors each have a rotor wing and a rotor drive element that is mounted torque proof on a rotor seat at an end region of one of the shafts. Each rotor seat pair has an axial abutment surface and a mounting surface. The pump also includes fasteners each engaging a mating section of one of the shafts and exerting an axial clamping force on one of the rotor drive elements against one of the axial abutment surfaces.
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公开(公告)号：US20230137074A1
公开(公告)日：2023-05-04
申请号：US17881883
申请日：2022-08-05
申请人： LG ELECTRONICS INC.
发明人： Joonhong PARK , Seoungmin KANG , Jinung SHIN
IPC分类号： F04C18/344 , F04C29/12
摘要： A rotary compressor may include a casing, a cylinder, a main bearing, a sub bearing, a rotational shaft, a roller having at least one vane slot and a back pressure chamber, and at least one vane. The roller may include at least one spring insertion groove formed in an inner end portion of the at least one vane slot in a lengthwise direction of the at least one vane slot, and a vane spring that supports a rear surface of the vane toward an inner circumferential surface of the cylinder may be disposed in the at least one spring insertion groove. Accordingly, elastic force may be supplied to the rear surface of the vane, to suppress or prevent trembling of the vane caused while the vane passes through a proximal portion during operation.
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公开(公告)号：US11635077B2
公开(公告)日：2023-04-25
申请号：US16837596
申请日：2020-04-01
申请人： LG Electronics Inc.
发明人： Howon Lee , Taekyoung Kim , Cheolhwan Kim
摘要： A scroll compressor is disclosed, which may provide an oil supply path opened only in case of driving of a low pressure ratio to improve a differential pressure oil supply structure which may have a defect in oil supply in case of driving of the low pressure ratio.
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5.发明申请公开(公告)号：US20230113626A1
公开(公告)日：2023-04-13
申请号：US17756729
申请日：2021-06-30
申请人： Hanon Systems
发明人： Iman Nezami , Laura Arriazu , Thomas Klotten
摘要： A scroll compressor and a method for oil enrichment and distribution, wherein the scroll compressor includes a compressor housing, two scrolls, a respective base plate, an eccentric drive, a drive shaft, an axis of rotation, a balance weight, a first bearing, a second bearing, and a counter-pressure space, and wherein a sealing washer is fixed on the first bearing at a side of the first bearing directed to the cavity of the rotatable balance weight and of the second bearing such that the sealing washer seals the first bearing on one side in a radially outer part of a region between an inner ring and an outer ring through which fluid can flow and is, at the same time, spaced from the inner ring in a radial manner such that a gap through which fluid can flow remains.
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公开(公告)号：US20230113348A1
公开(公告)日：2023-04-13
申请号：US17450563
申请日：2021-10-12
摘要： Systems and methods are provided for pump systems that deliver optimized performance and efficiency. A method includes selecting a pump for the pump system. A maximum operating speed of the pump is determined, and its torque requirements are evaluated. A motor is selected to meet the torque requirements and a speed target is set for the motor. A speed reducer is sized for operation of the motor at the speed target and operation of the pump below the maximum speed, and the motor is coupled with the pump through the speed reducer.
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公开(公告)号：US11624364B2
公开(公告)日：2023-04-11
申请号：US16997204
申请日：2020-08-19
发明人： Yuya Hattori , Takuro Yamashita , Takumi Maeda
摘要： An electric compressor includes a housing, a drive shaft, a motor, a fixed scroll, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor. The balance weight extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction of the drive shaft. The balance weight is located away from the rotor by a predetermined distance in the axial direction of the drive shaft.
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公开(公告)号：US11624360B2
公开(公告)日：2023-04-11
申请号：US17132534
申请日：2020-12-23
摘要： A gear for a pump includes a gear body defining a root circle, and a plurality of gear teeth extending from the gear body radially outwardly of the root circle. Each of the plurality of gear teeth have a tip portion, a leading edge, a trailing edge, a circular thickness defined between the leading edge and the trailing edge, a first radially outwardly facing surface and a second radially outwardly facing surface. At least one of the first radially outwardly facing surface and the second radially outwardly facing surface includes a chamfered portion that extends from the leading edge toward the trailing edge across a portion of the circular thickness.
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公开(公告)号：US11619231B1
公开(公告)日：2023-04-04
申请号：US17563070
申请日：2021-12-28
申请人： Raymond Zhou Shaw
发明人： Raymond Zhou Shaw
摘要： A complete bearing-sealed root vacuum pump system capable of promoting vacuum ability of a condenser of a power plant provides a complete bearing-sealed structure. All chambers are isolated effectively so that liquid cannot flow there between and thus not to destroy the root vacuum pump. Therefore, the lifetime of the root vacuum pump is prolonged. The heat exchangers are arranged between the root vacuum pumps and the front stage pump so as to return the condensed water. The condenser vacuum is improved and thus the power generation efficiency is promoted, and power consumption is lowered. As a result a large power plant can save several thousand tons of coals per year.
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公开(公告)号：US11619230B2
公开(公告)日：2023-04-04
申请号：US17502098
申请日：2021-10-15
申请人： LG ELECTRONICS INC.
发明人： Joonhong Park , Kiyoul Noh , Seokhwan Moon
IPC分类号： F04C18/344 , F04C29/02 , F04C29/00 , F01C21/08
摘要： A vane rotary compressor includes a roller rotatably supported in a cylinder and including a plurality of vane slots formed along a circumferential direction with back pressure chambers formed at one end of each of the vane slots. A plurality of vanes are slidably supported in the vane slots protruding toward an inner circumferential surface of the cylinder. A compression space formed by the vanes between the roller and the cylinder includes an inlet port and an outlet port formed at both sides of a contact point between the roller and the cylinder. A vane positioned between the inlet port and the outlet port is configured such that a front gap between a front surface of the vane and the inner circumferential surface of the cylinder is smaller than a rear gap between a rear surface of the vane and an inner surface of the back pressure chamber.
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