公开(公告)号：US11971035B2

公开(公告)日：2024-04-30

申请号：US16762094

申请日：2018-11-06

申请人： Johnson Controls Technology Company

发明人： Franklin Aaron Montejo

IPC分类号： F04C28/14 ,  F04C18/16 ,  F04C28/08 ,  F04C29/12

CPC分类号： F04C28/08 ,  F04C18/16 ,  F04C28/14 ,  F04C29/12 ,  F04C2210/228 ,  F04C2240/30 ,  F04C2250/102 ,  F04C2270/185

摘要： The present disclosure relates to a compressor having a first rotor and a second rotor disposed within a housing, where the first rotor is configured to rotate about a first axis of the housing and the second rotor is configured to rotate about a second axis of the housing. The first rotor and the second rotor engage with one another such that rotation of the first rotor and the second rotor pressurizes a vapor within the housing. The compressor includes an end plate coupled to a discharge end of the housing, where the end plate includes a variable opening configured to discharge a flow of the vapor from the housing. The end plate also includes a first movable member and a second movable member that are configured to increase or decrease a cross-sectional area of the variable opening to adjust the flow of the vapor.

公开(公告)号：US11852145B2

公开(公告)日：2023-12-26

申请号：US16728570

申请日：2019-12-27

申请人： Trane International Inc.

发明人： Jay H. Johnson ,  John R. Sauls ,  Gordon Powell ,  Daniel R. Crum

IPC分类号： F04C29/12 ,  F04C28/14 ,  F04C28/12 ,  F04C28/28 ,  F04C28/24 ,  F04C28/08 ,  F04C18/16 ,  F25B1/047 ,  F25B49/02

CPC分类号： F04C29/124 ,  F04C18/16 ,  F04C28/08 ,  F04C28/12 ,  F04C28/14 ,  F04C28/24 ,  F04C28/28 ,  F25B1/047 ,  F25B49/022 ,  F04C2240/403 ,  F04C2240/81 ,  F04C2270/025 ,  F04C2270/585 ,  F25B2600/0253

摘要： Systems and methods are used to control operation of a rotary compressor of a refrigeration system to improve efficiency by varying the volume ratio and the speed of the compressor in response to current operating and load conditions. The volume of the axial and/or radial discharge ports of the compressor can be varied to provide a volume ratio corresponding to operating conditions. In addition, permanent magnet motors and/or control of rotor tip speed can be employed for further efficiency gains.

公开(公告)号：US11852132B2

公开(公告)日：2023-12-26

申请号：US17259578

申请日：2018-12-19

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： Hua Liu ,  Ke Xu ,  Qunbo Liu ,  Longfei Li ,  Yaopeng Rong

IPC分类号： F04B49/06 ,  F04B27/00 ,  F04B49/02 ,  F04C23/00 ,  F04C28/08 ,  F04C28/02

CPC分类号： F04B49/065 ,  F04B27/005 ,  F04B49/02 ,  F04C23/001 ,  F04C28/02 ,  F04C28/08 ,  F04B2203/0204 ,  F04B2205/07 ,  F04B2207/03 ,  F04B2207/703 ,  F04C2270/075 ,  F04C2270/095

摘要： The disclosure discloses a method and a device for controlling cylinder switching of a compressor, a unit and an air conditioning system. The method includes: determining whether the compressor needs to perform cylinder switching; if so, adjusting current operating frequency according to a system pressure difference so that both the adjusted operating frequency and the system pressure difference meet a cylinder switching condition of the compressor; and controlling the compressor to perform cylinder switching. At the moment, the system pressure difference and the operation frequency are stable, and would not interfere the compressor's maintaining of the single-cylinder or double-cylinder operation state, which guarantees the energy efficiency of the unit where the compressor is located, and improves the use experience of a user.

公开(公告)号：US20230374958A1

公开(公告)日：2023-11-23

申请号：US18320777

申请日：2023-05-19

申请人： EATON INTELLIGENT POWER LIMITED

发明人： Douglas Anthony Hughes ,  Brandon Dennis Biller ,  Jim Kevin Spring ,  Jesse Drummond ,  Matthew Fortini

IPC分类号： F02M26/49 ,  F02B33/38 ,  F02B39/10 ,  F02B33/34 ,  F04C18/12 ,  F04C28/08 ,  F04C28/06 ,  F02D41/00 ,  F02M26/50 ,  F02M26/34 ,  F04C18/14 ,  F02M26/00 ,  F04C29/04 ,  F04C29/02

CPC分类号： F02M26/49 ,  F02B33/38 ,  F02B39/10 ,  F02B33/34 ,  F04C18/126 ,  F04C28/08 ,  F04C28/06 ,  F02D41/0065 ,  F02D41/0007 ,  F02M26/50 ,  F02D41/006 ,  F02M26/34 ,  F04C18/14 ,  Y02T10/40 ,  F02M26/00 ,  F04C29/04 ,  F04C29/02 ,  Y02T10/12

摘要： A method of operating exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit linked to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target in step S1 wherein when motor speed=predetermined target then; determining if a motor torque is within a predetermined target in step S2 wherein when motor torque=predetermined target then; determining if a motor temperature is within a predetermined target in step S3 wherein when motor temperature=predetermined target then; and maintaining operation of the exhaust gas recirculation pump.

公开(公告)号：US11808261B2

公开(公告)日：2023-11-07

申请号：US17285802

申请日：2018-12-14

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Hua Liu ,  Longfei Li ,  Handong Xue ,  Yi Ni ,  Yingsheng Fu ,  Yaopeng Rong ,  Zhongqiu Zhang ,  Qunbo Liu ,  Ke Xu

IPC分类号： F04B51/00 ,  F04B25/00 ,  F04B49/06 ,  F04C23/00 ,  F04C28/06 ,  F04C28/08 ,  F04C28/28 ,  F04B41/00 ,  F04C18/356 ,  F04C18/344 ,  F04C28/02

CPC分类号： F04B51/00 ,  F04B25/005 ,  F04B49/065 ,  F04C23/001 ,  F04C28/065 ,  F04C28/08 ,  F04C28/28 ,  F04B41/00 ,  F04B2203/0201 ,  F04B2203/0204 ,  F04C18/344 ,  F04C18/356 ,  F04C28/02 ,  F04C2270/075 ,  F04C2270/095

摘要： Disclosed are a variable capacity compressor operation mode determination method and device, a variable capacity compressor and an air conditioner. The variable capacity compressor operation mode determination method includes: detecting a current value of a compressor at present as A1 before switching an operation mode of the compressor; detecting the current value of the compressor at present as A2 after switching the operation mode of the compressor and reaching a preset time; comparing A1 and A2, determining that the switching of the operation mode of the compressor is successful when a ratio relationship between A1 and A2 satisfies a preset condition, and determining that switching of the operation mode of the compressor is failed when the ratio relationship between A1 and A2 dissatisfies a preset condition.

公开(公告)号：US11725664B2

公开(公告)日：2023-08-15

申请号：US15826370

申请日：2017-11-29

申请人： Megadyne Medical Products, Inc.

发明人： Chad S. Frampton ,  Shawn K. Horner ,  Darcy W. Greep ,  Frederick Shelton ,  Jason L. Harris ,  David C. Yates ,  Roger Millis

IPC分类号： F04C29/06 ,  F04C18/02 ,  F04C28/08 ,  F04C29/00 ,  A61B18/14 ,  F04C18/12 ,  A61M1/00 ,  A61B18/12 ,  A61B18/00 ,  A61B18/16

CPC分类号： F04C29/06 ,  A61B18/14 ,  A61M1/80 ,  F04C18/0207 ,  F04C18/0215 ,  F04C18/12 ,  F04C28/08 ,  F04C29/0085 ,  A61B18/1206 ,  A61B18/16 ,  A61B2018/00595 ,  A61B2018/00601 ,  A61B2218/008 ,  A61M1/73 ,  A61M2202/02 ,  A61M2205/103 ,  A61M2205/42 ,  A61M2205/75 ,  F04C29/0071 ,  F04C2240/40 ,  F04C2270/051 ,  F04C2270/125 ,  F04C2270/135

摘要： A system for noise and vibration management of a smoke evacuation system includes a pump that compresses air and produces a pressure differential within an airflow path. The pump may be a sealed, positive displacement pump. The system includes vibration absorption mechanisms disposed between inner and outer housings, as well as on the outside surface of the outer housing. Methods of controlling and regulating a motor of the system to preserve the lifespan of the motor and maintain consistent airflow rates throughout the smoke evacuation system include varying a supply of electrical current to the motor so that it can operate at variable performance levels. Orifices are opened and closed in order to relieve resistance pressures within the airflow path due to clogging and blockages.

公开(公告)号：US11674513B2

公开(公告)日：2023-06-13

申请号：US17286127

申请日：2019-10-10

申请人： OET GmbH

发明人： Frank Obrist

IPC分类号： F04C28/08 ,  F04C18/02 ,  F04C29/00 ,  H02P21/20

CPC分类号： F04C28/08 ,  F04C18/0207 ,  F04C18/0215 ,  F04C29/0085 ,  H02P21/20 ,  F04C2240/40 ,  F04C2270/035 ,  F04C2270/065 ,  F04C2270/125 ,  H02P2205/05

摘要： The invention relates to a method used to control a scroll compressor having a first and a second spiral, in particular that are arranged one inside the other. The first spiral can be moved by a motor relative to the second spiral for a decompression or compression operation of the scroll compressor. The invention reduces vibration (actual acceleration forces) in the scroll compressor to allow for a longer service life by adapting a torque curve of the motor on the basis of measured acceleration forces on the scroll compressor which, in turn, is based on the position and/or positional angle of the first spiral relative to the second spiral such that the acceleration forces are reduced below a threshold or minimized.

公开(公告)号：US11668269B2

公开(公告)日：2023-06-06

申请号：US16962459

申请日：2019-01-17

申请人： EATON INTELLIGENT POWER LIMITED

发明人： Douglas Anthony Hughes ,  Brandon Dennis Biller ,  Jim Kevin Spring ,  Jesse Drummond ,  Matthew Fortini

IPC分类号： F02M26/49 ,  F02M26/34 ,  F04C28/06 ,  F04C28/08 ,  F04C18/12 ,  F02M26/33 ,  F02M26/05 ,  F02M26/47 ,  F02M26/50 ,  F02D41/00 ,  F02B1/14 ,  F02B3/06 ,  F02B33/38 ,  F02B39/10 ,  F02B33/34 ,  F04C18/14 ,  F04C29/02 ,  F04C29/04 ,  F02M26/00

CPC分类号： F02M26/49 ,  F02B1/14 ,  F02B3/06 ,  F02B33/34 ,  F02B33/38 ,  F02B39/10 ,  F02D41/006 ,  F02D41/0007 ,  F02D41/0065 ,  F02M26/05 ,  F02M26/33 ,  F02M26/34 ,  F02M26/47 ,  F02M26/50 ,  F04C18/126 ,  F04C28/06 ,  F04C28/08 ,  F02M26/00 ,  F02M2026/004 ,  F04C18/14 ,  F04C29/02 ,  F04C29/04 ,  Y02T10/12 ,  Y02T10/40

摘要： A method of operating an exhaust gas recirculation pump for an internal combustion engine including: providing an EGR pump assembly including an electric motor coupled to a roots device having rotors, the EGR pump operably connected to an internal combustion engine; providing an EGR control unit lined to the EGR pump assembly; providing sensors linked to the EGR control unit; determining if a motor speed is within a predetermined target (step SI), wherein when the motor speed is within the predetermined target then; determining if a motor torque is within a predetermined target (step S2) wherein when the motor torque is within the predetermined target then; determining if a motor temperature is within a predetermined target (step S3) wherein when the motor temperature is within the predetermined target then; maintaining operation of the exhaust gas recirculation pump.

公开(公告)号：US20230167824A1

公开(公告)日：2023-06-01

申请号：US17905998

申请日：2021-03-09

申请人： Atlas Copco Airpower N.V.

发明人： Simon Candries ,  Yun Shi

IPC分类号： F04C25/02 ,  F04B35/04 ,  F04B37/14 ,  F04B49/06 ,  F04C28/08 ,  F04D19/04 ,  F04D27/00 ,  F04D27/02

CPC分类号： F04C25/02 ,  F04B35/04 ,  F04B37/14 ,  F04B49/065 ,  F04C28/08 ,  F04D19/04 ,  F04D27/001 ,  F04D27/004 ,  F04D27/0261 ,  F04B2203/0209 ,  F04C2270/23 ,  F05D2270/3011

摘要： Repeated cycles each consist of a pump down phase and a holding phase, wherein a start timepoint of each cycle is the timepoint when a rise in an inlet pressure of the pump is sufficiently large and the time extending between two consecutive cycle start timepoints is a cycle time. A control method includes determining a start of a next cycle during a present cycle, wherein it is preferable that the present cycle directly precedes the next cycle. The method further includes controlling the pump to accelerate to a maximum allowed speed during the holding phase of the present cycle before the start of the next cycle such that at the start of the next cycle full pump capacity is available.

公开(公告)号：US11512885B2

公开(公告)日：2022-11-29

申请号：US16338974

申请日：2017-10-05

申请人： Johnson Controls Technology Company

发明人： David F. Saylor

IPC分类号： F25B49/02 ,  H02P5/74 ,  H01F30/04 ,  F04C28/08 ,  F04B49/20 ,  F04B41/00 ,  H02P27/04 ,  H02P1/58 ,  F04C28/02 ,  F04B49/06 ,  F04B49/02 ,  F04D25/06 ,  F04D15/00 ,  F04D27/00 ,  F04D27/02 ,  H02P27/06 ,  H02P27/00 ,  H02P1/54 ,  F04B35/04 ,  H02P27/16

摘要： Embodiments of the present disclosure relate to a refrigeration system that includes a compressor configured to circulate refrigerant along a refrigerant loop, a motor configured to drive the compressor, and a variable speed drive coupled to the motor and configured to supply power to the motor. The variable speed drive includes a primary winding of a step down transformer coupled to an alternating current (AC) power source, a first secondary winding of the step down transformer, where the first secondary winding is configured to supply power at a variable supplied voltage to the motor when the motor operates below a threshold voltage, and a second secondary winding of the step down transformer, where the second secondary winding is configured to supply power at a fixed supplied voltage when the motor operates at or above the threshold voltage.