公开(公告)号：US11971035B2

公开(公告)日：2024-04-30

申请号：US16762094

申请日：2018-11-06

Applicant: Johnson Controls Technology Company

Inventor： Franklin Aaron Montejo

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

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

Abstract: 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

Applicant: Trane International Inc.

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

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

CPC classification number: 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

Abstract: 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

Applicant: Gree Electric Appliances, Inc. of Zhuhai

Inventor： Hua Liu ,  Ke Xu ,  Qunbo Liu ,  Longfei Li ,  Yaopeng Rong

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

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

Abstract: 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

Applicant: EATON INTELLIGENT POWER LIMITED

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

IPC: 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 classification number: 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

Abstract: 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

Applicant: GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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

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

CPC classification number: 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

Abstract: 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

Applicant: Megadyne Medical Products, Inc.

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

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

CPC classification number: 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

Abstract: 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

Applicant: OET GmbH

Inventor： Frank Obrist

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

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

Abstract: 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

Applicant: EATON INTELLIGENT POWER LIMITED

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

IPC: 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 classification number: 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

Abstract: 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

Applicant: Atlas Copco Airpower N.V.

Inventor： Simon Candries ,  Yun Shi

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

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

Abstract: 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：US20180320688A1

公开(公告)日：2018-11-08

申请号：US15970206

申请日：2018-05-03

Applicant: Quest Engines, LLC

Inventor： Elario Dino Dalmas, II ,  Roy Albert Blom ,  Brett J. Leathers

IPC: F04C9/00 ,  F04C28/08 ,  F04C15/00

CPC classification number: F04C9/002 ,  F02B33/36 ,  F04C15/0061 ,  F04C28/08 ,  F04C2240/20

Abstract: Variable volume chamber devices are disclosed. The chambers may be defined by the space between two complementary rotors. The volume of the chambers may vary as a function of the variation of relative rotational speeds of the two rotors.