公开(公告)号：US12012961B2

公开(公告)日：2024-06-18

申请号：US17794062

申请日：2021-01-20

申请人： R-718 SPINDEL GBR

发明人： Ralf Steffens

IPC分类号： F04C18/16 ,  F04C18/56 ,  F04C28/10

CPC分类号： F04C18/16 ,  F04C18/565 ,  F04C28/10 ,  F04C2210/1094 ,  F04C2210/26 ,  F04C2250/201

摘要： Compression of water vapour as R718 is disclosed with and without addition of additives as an aqueous solution in rotational displacement machines, i.e. refrigeration, air-conditioning and heat pump technology. To largely avoid over or under-compression, it is proposed for the easiest possible adaptation of the currently effective internal volume ratio as so-called iV value in the displacer that the compressor housing starting from the outlet side with rotor profile length LR over a length LiV comprises planar, i.e. flat iV disks (3j) with the index j for 1≤j≤n; n is the number of disks; n≥1 with a width bj per iV disk having planar surfaces PF preferably perpendicular to the neutral axis AN. The iV disks are displaced in a targeted manner individually by movement control devices (5j) per iV disk in each case by a distance si where 0

公开(公告)号：US20240191714A1

公开(公告)日：2024-06-13

申请号：US18286293

申请日：2022-03-24

申请人： ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP

发明人： Mukesh LALCHANDANI ,  Simon DE BOCK ,  Tom VAN TROOS

IPC分类号： F04C29/04 ,  F04C18/16 ,  F04C25/00

CPC分类号： F04C29/042 ,  F04C18/16 ,  F04C25/00 ,  F04C2210/26 ,  F04C2220/22

摘要： An element for compressing a gas to be compressed at a low temperature of −40° C. or lower, which element (1) is provided with a housing (2) containing at least one rotor (3) that is rotatably arranged with respect to the housing (2) and having an inlet (6) for the gas to be compressed and an outlet (7) for compressed gas, characterized in that the element (1) is configured for compressing the gas to be compressed having the low temperature by providing the element (1) with a heating duct (8) that runs through the housing (2), the heating duct (8) being provided with an inlet (9) where a first heat medium is introduced into the housing (2) at a higher temperature than the aforementioned low temperature and an outlet (10) where the first heat medium is evacuated from the housing (2).

公开(公告)号：US11739752B2

公开(公告)日：2023-08-29

申请号：US17941743

申请日：2022-09-09

申请人： LG Electronics Inc.

发明人： Yongkyu Choi ,  Inho Won ,  Cheolhwan Kim

IPC分类号： F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F04C18/02 ,  F04C23/00 ,  F04C28/26 ,  F04C15/06 ,  F04C29/12 ,  F04C29/02

CPC分类号： F04C18/0261 ,  F04C15/06 ,  F04C18/0215 ,  F04C18/0246 ,  F04C23/008 ,  F04C28/26 ,  F04C29/12 ,  F04C29/023 ,  F04C2210/26 ,  F04C2240/40 ,  F04C2240/60

摘要： A scroll compressor includes a discharge port formed at a central portion thereof, a pair of two compression chambers continuously moving toward the discharge port, and a plurality of bypass portions formed at each interval along a movement path of each compression chamber in the both compression chambers. Compression gradients of the both compression chambers are different from each other. An interval between a bypass portion closest to the discharge port and another bypass portion adjacent to the bypass portion among the bypass portions of each compression chamber is defined as a first interval. The first interval of a second bypass portion belonging to a compression chamber having a relatively larger compression gradient is smaller than the first interval of a first bypass portion belonging to the other compression chamber.

公开(公告)号：US20230228269A1

公开(公告)日：2023-07-20

申请号：US18051074

申请日：2022-10-31

申请人： TRANE INTERNATIONAL INC.

发明人： Dennis R. Dorman ,  John R. Sauls

IPC分类号： F04C18/16 ,  F25B49/02 ,  F01C21/02 ,  F04C28/08 ,  F25B1/047

CPC分类号： F04C18/16 ,  F01C21/02 ,  F04C28/08 ,  F25B1/047 ,  F25B49/025 ,  F04C2210/26 ,  F04C2270/052 ,  F25B2600/021 ,  Y02B30/70

摘要： A variable capacity screw compressor comprises a suction port, at least two screw rotors and a discharge port being configured in relation to a selected rotational speed that operates at least one screw rotor at an optimum peripheral velocity that is independent of a peripheral velocity of the at least one screw rotor at a synchronous motor rotational speed for a rated screw compressor capacity. A motor is configured to drive the at least one screw rotor at a rotational speed at a full-load capacity that is substantially greater than the synchronous motor rotational speed at the rated screw compressor capacity. A variable speed drive receives a command signal from a controller and generates a control signal that drives the motor at the selected rotational speed.

公开(公告)号：US11644035B1

公开(公告)日：2023-05-09

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： F04C18/34 ,  F04C2/32 ,  F04C29/12 ,  F04C18/344 ,  F04C2/344 ,  F04C23/00

CPC分类号： F04C18/3445 ,  F04C2/321 ,  F04C2/344 ,  F04C18/3442 ,  F04C29/124 ,  F04C23/008 ,  F04C2210/26 ,  F04C2240/50

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.

公开(公告)号：US20190203710A1

公开(公告)日：2019-07-04

申请号：US16226843

申请日：2018-12-20

申请人： LG ELECTRONICS INC.

发明人： Jaesang LEE ,  Kyoungjun PARK ,  Junghoon PARK ,  Bumjune SEO ,  Byungkil YOO

IPC分类号： F04C18/02 ,  F04C15/00 ,  F04C29/02

CPC分类号： F04C18/0215 ,  F04C15/008 ,  F04C15/0088 ,  F04C23/008 ,  F04C29/0021 ,  F04C29/02 ,  F04C2210/26 ,  F04C2240/807

摘要： A motor operated compressor may include a first scroll; a second scroll that forms a pair of two compression chambers between the first scroll and the second scroll while being engaged with the first scroll to perform an orbiting movement; a frame fixed in a radial direction at a side of the first scroll with the second scroll interposed between the first scroll and the frame; and a balance weight fixedly coupled to the rotation shaft, wherein the rotation shaft or the balance weight is supported on the frame in an axial direction.

公开(公告)号：US20180245593A1

公开(公告)日：2018-08-30

申请号：US15553487

申请日：2016-02-29

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Kenji NAGAHARA

IPC分类号： F04C28/28 ,  F04C18/02

CPC分类号： F04C28/28 ,  F04C18/02 ,  F04C18/0215 ,  F04C2210/26 ,  F04C2240/10 ,  F04C2240/20 ,  F04C2240/30 ,  F04C2270/215 ,  F04C2270/42

摘要： A scroll-type compressor includes a compression-chamber-forming member, a housing, an injection passage part, and a relief mechanism. The compression-chamber-forming member forms a compression chamber and has a movable scroll and a fixed scroll. The housing forms a back pressure chamber. Refrigerant to apply back pressure to the compression-chamber-forming member is accumulated in the back pressure chamber. The injection passage part is linked to the compression chamber. The relief mechanism is configured to establish a communication between the compression chamber and the back pressure chamber communicating when injection pressure of the refrigerant flowing from the injection passage part into the compression chamber is higher than the pressure in the back pressure chamber.

公开(公告)号：US20180216856A1

公开(公告)日：2018-08-02

申请号：US15882324

申请日：2018-01-29

申请人： FUJITSU GENERAL LIMITED

发明人： Shunji ITAKURA ,  Ken HORIGUCHI ,  Toshiyuki FUJI ,  Sota SHIMADA ,  Kazuya FUNADA ,  Kenji KOMINE ,  Junya TANAKA

IPC分类号： F25B31/02 ,  C09K5/04 ,  F04C13/00

CPC分类号： F25B31/026 ,  C09K5/045 ,  C09K2205/126 ,  F04C13/001 ,  F04C18/3564 ,  F04C23/008 ,  F04C2210/26 ,  F04C2210/263 ,  F04C2230/231 ,  F04C2240/30 ,  F04C2240/806 ,  F25B2400/07 ,  F25B2400/19

摘要： A rotary compressor includes: a closed upright cylindrical compressor housing including an upper portion provided with a discharge section of refrigerant and a body portion provided with an intake section of the refrigerant; a compression section disposed at a lower part in the compressor housing and configured to compress the refrigerant suctioned by the intake section to discharge the refrigerant from the discharge section; and a motor disposed at an upper part in the compressor housing and configured to drive the compression section. The motor has a rotor disposed on an inner side and a stator disposed on an outer side, the refrigerant is HFO1123 refrigerant or a refrigerant mixture containing the HFO1123 refrigerant, and an inner welded portion formed by welding using flux is provided within a projection area of the rotor at the upper portion of the compressor housing.

公开(公告)号：US09951775B2

公开(公告)日：2018-04-24

申请号：US15259498

申请日：2016-09-08

申请人： FUJITSU GENERAL LIMITED

发明人： Hiroki Katayama ,  Taku Morishita ,  Motonobu Furukawa ,  Naoya Morozumi

IPC分类号： F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C11/00 ,  F04C29/06 ,  F04C18/356 ,  F04C29/00 ,  F04C29/12 ,  F04C23/00

CPC分类号： F04C29/066 ,  F04C18/3562 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C29/0057 ,  F04C29/0085 ,  F04C29/065 ,  F04C29/068 ,  F04C29/12 ,  F04C2210/26 ,  F04C2240/10 ,  F04C2240/20 ,  F04C2240/40 ,  F04C2250/102 ,  F04C2270/14

摘要： On a plane orthogonal to the rotation shaft, an upper muffler chamber has a plurality of flared portions that are flared from a center of a rotation shaft toward between penetrating bolts and a plurality of small-diameter portions that connect between the flared portions, are apart from penetrating bolts, and are formed on a center side of the rotation shaft from the penetrating bolts. A muffler outlet is provided in each flared portion. A second outlet and a refrigerant path hole of an upper end plate are positioned on an inside of one of a plurality of flared portions, and an opening area of the muffler outlet of one flared portion is greater than an opening area of the muffler outlet of each of the other flared portions.

公开(公告)号：US20170350394A1

公开(公告)日：2017-12-07

申请号：US15536642

申请日：2015-09-09

申请人： Samsung Electronics Co., Ltd.

发明人： Takeaki Ashimori ,  Osamu Aiba

IPC分类号： F04C23/00 ,  F04C29/00 ,  F04C18/356 ,  F04C23/02

CPC分类号： F04C23/003 ,  F04C18/356 ,  F04C18/3564 ,  F04C23/001 ,  F04C23/008 ,  F04C23/02 ,  F04C29/0021 ,  F04C29/0057 ,  F04C2210/26 ,  F04C2240/40 ,  F04C2240/60 ,  F04C2240/807 ,  F04C2270/12 ,  F04C2270/13

摘要： Disclosed herein is a rotary compressor capable of maintaining the overall dynamic balance and providing low vibration and low noise even at high speed operation and capable of improving efficiency by providing a communication passage to communicate operation chambers, which are provided inside each of the plurality of cylinders for compressing a refrigerant, to each other. The rotary-type compressor includes a housing, a drive motor provided inside the housing to generate power and having a stator and a rotor, and a compression unit that receives power from the drive motor and compresses the refrigerant. The compression unit includes a plurality of cylinders in which an operation chamber to compress the refrigerant is provided. The operation chambers provided in each of the plurality of cylinders are provided to have different volumes, and a balancer provided to maintain dynamic balance is provided only in the lower side of the rotor.