公开(公告)号：US12180953B2

公开(公告)日：2024-12-31

申请号：US17781515

申请日：2019-12-04

Applicant: Ateliers Busch SA

Inventor： Paul Alers ,  Jeihong Kim ,  Jean-Eric Larcher

IPC: F04B41/06 ,  F04C18/12 ,  F04C18/16 ,  F04C23/00 ,  F04C25/02 ,  F04C28/02 ,  F04C28/24 ,  F04C28/26 ,  F04C18/02 ,  F04C18/18 ,  F04C28/28

Abstract: The present invention relates to a redundant vacuum pumping system (300) and a pumping method using this system, comprising a primary roots pump (302), a first pumping sub-system (310) and a second pumping sub-system (320), wherein the first pumping sub-system (310) and the second pumping sub-system (320) are arranged to pump in parallel the gas evacuated by the primary roots pump (302), the first pumping sub-system (310) comprising a first secondary roots pump (311) and a first positive displacement pump (312) and a first valve (313) positioned between the gas discharge outlet (302b) of the primary roots pump (302) and the gas suction inlet (311a) of the first secondary roots pump (311), and the second pumping sub-system (320) comprising a second secondary roots pump (311) and a second positive displacement pump (312) and a second valve (323) positioned between the gas discharge outlet (302b) of the primary roots pump (302) and the gas suction inlet (321a) of the second secondary roots pump (321). According to the invention, the first pumping sub-system (310) and the second pumping sub-system (320) are configured to pump at a same flow rate, and the primary roots pump (302) is configured to be able to pump at a flow rate F equal to the pumping flow rate of the primary pumping sub-system (310) plus the pumping flow rate of the secondary pumping sub-system (320).

公开(公告)号：US12092110B2

公开(公告)日：2024-09-17

申请号：US18316725

申请日：2023-05-12

Applicant: GARDNER DENVER DEUTSCHLAND GMBH

Inventor： Ulrich Thomes

IPC: F04C28/08 ,  F04C18/16 ,  F04C23/00 ,  F04C28/02 ,  F04C28/06 ,  F04C28/24

CPC classification number: F04C28/08 ,  F04C18/16 ,  F04C23/003 ,  F04C28/02 ,  F04C28/06 ,  F04C28/24 ,  F04C2240/402 ,  F04C2270/02 ,  F04C2270/052 ,  F04C2270/18 ,  F04C2270/20 ,  F04C2270/44

Abstract: The invention relates to a method for controlling a rotary screw compressor, having at least a first and a second air-end, wherein both air-ends are driven separately from one another and speed controlled. According to the invention, the following steps are carried out: detection of a volume flow taken at the outlet of the second air-end; adjustment of the rotational speed of both air-ends, when the removed volume flow fluctuates in a range between a maximum value and a minimum value; opening of a pressure-relief valve, if the volume flow falls below the minimum value; and reduction of the rotational speed of at least the first air-end to a predetermined idling speed (V1L) to reduce the volumetric flow delivered by the first to the second air-end.

公开(公告)号：US20230096279A1

公开(公告)日：2023-03-30

申请号：US17485532

申请日：2021-09-27

Applicant: Raymond Zhou Shaw ,  Jian Wei Zhang ,  Xiaoqing Pan

Inventor： Raymond Zhou Shaw ,  Jian Wei Zhang ,  Xiaoqing Pan

IPC: F04C18/12 ,  F04C23/00 ,  F04C25/02 ,  F04C28/02 ,  F04C28/08 ,  F04C28/26

Abstract: A vacuum system having a condenser and a root vacuum pump set includes an independent inlet condenser set having an inlet end for receiving vapor inputted from an output of an air cooling power generator condenser of a generator; air in the vapor being condensed, and the surplus air is outputted; a root vacuum pump set including at least one root vacuum pump; the root vacuum pump set further including an input end and an output end; the input end being connected to the independent inlet condenser set; air outputted from the independent inlet condenser set being inputted to the at least one root vacuum pump for compression and then the compressed air being outputted from the output end; and a backing pump connected to the output end of the root vacuum pump set by using an output pipe; the backing pump serving to receive air outputted from the root vacuum pump set.

公开(公告)号：US11585335B2

公开(公告)日：2023-02-21

申请号：US16977870

申请日：2019-07-26

Applicant: Hitachi Industrial Equipment Systems Co., Ltd.

Inventor： Norio Aoyagi ,  Akihiro Yamamoto ,  Yoshiyuki Kanemoto ,  Hiroaki Saito ,  Fuminori Kato ,  Daichi Oka

IPC: F04B41/06 ,  F04B35/04 ,  F04B49/06 ,  F04D25/16 ,  F04D27/02 ,  F04B49/08 ,  F04B49/20 ,  F25B13/00 ,  F25B49/02 ,  F25B5/02 ,  F04C23/00 ,  F04C28/02 ,  F04C28/08 ,  F04D17/10 ,  F04C14/02

Abstract: A gas compressor includes inverters, a plurality of compressor units and a control device for controlling each of the inverters. The control device increases the number of compressor bodies to be operated after confirming that the rotational speed of the operational motors will reach a steady value immediately after causing the number of the compressor bodies to be operated to increase.

公开(公告)号：US20220090592A1

公开(公告)日：2022-03-24

申请号：US17428918

申请日：2020-02-20

Applicant: EDWARDS LIMITED

Inventor： Gerald Robin Shelley ,  Peter George Stammers ,  Brian Stuart Blakeley Roberts

IPC: F04B37/14 ,  F04B41/06 ,  F04B49/00 ,  F04B49/02 ,  F04B49/06 ,  F04B49/20 ,  F04B49/22 ,  F04C25/02 ,  F04C28/02 ,  F04C28/08 ,  F04C28/28 ,  F04D15/00 ,  F04D17/16 ,  F04D19/04 ,  F04D27/00 ,  F04D27/02

Abstract: A vacuum pumping apparatus may include: a common pumping line having a plurality of pumping line inlets and a pumping line outlet, each pumping line inlet being configured to couple with an outlet of an associated plurality of vacuum processing chambers; at least one primary vacuum pump in fluid communication with the pumping line outlet to pump gas from each vacuum processing chamber; and control logic operable to control operation of the primary vacuum pump in response to an indication of an operating state of the plurality of vacuum processing chambers. In this way, the performance of the primary vacuum pump can be adjusted to match the load provided by the processing chambers and when there is an excess capacity, the performance of the primary vacuum pumps can be reduced, which can lead to significant energy savings and reduce wear on the pump.

公开(公告)号：US11231037B2

公开(公告)日：2022-01-25

申请号：US14376454

申请日：2014-04-28

Applicant: KAESER KOMPRESSOREN SE

Inventor： Florian Wagner ,  Andreas Birkenfeld ,  Anika Hartwich

IPC: F04C28/28 ,  F04C28/02 ,  F04D27/00 ,  F04B41/06 ,  F04B49/06 ,  F04C18/16

Abstract: A method is provided for controlling and/or monitoring a compressor system comprising several components, namely one or more compressors, one or more peripheral devices, and also a control/monitoring unit, wherein the compressors and peripheral devices are arranged or connected in a certain configuration. The method distinguishes itself in that (a) in a measured-value-capture step, measured values are captured within the compressor system or the components; (b) in an allocation step, context information is allocated to the measured value or measured values in advance, simultaneously, or after the measured-value capture, in order to standardize the measured values; and (c) in an evaluation step, the measured value or measured values standardized by the context information are used in a control, monitoring, diagnostics, or evaluation routine.

公开(公告)号：US20210372405A1

公开(公告)日：2021-12-02

申请号：US17334598

申请日：2021-05-28

Applicant: Agilent Technologies, Inc.

Inventor： Christian Spada ,  David Lukman ,  Roberto Carboneri ,  Andrea Bertallot ,  Pascal Martin

IPC: F04C28/02 ,  F04C28/28 ,  F04C23/00 ,  F04C25/02 ,  F04C29/04 ,  F04C29/02

Abstract: A vacuum pumping system includes a plurality of positive displacement vacuum pumps, and more particularly a plurality of positive displacement vacuum pumps working in parallel. The vacuum pumping system includes a management unit that carries out a synchronized control of all the positive displacement vacuum pumps of the vacuum pumping system and thus allows to check possible risk of contamination of the vacuum pumping system and carry out, if needed, the necessary corrective actions without requiring any modification to the construction of the vacuum pumping system.

公开(公告)号：US20210324858A1

公开(公告)日：2021-10-21

申请号：US17272521

申请日：2019-09-24

Applicant: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP

Inventor： Stijn BROUCKE ,  Pieter DE SCHAMPHELAIRE

IPC: F04C29/02 ,  F04C18/16 ,  F04C29/04 ,  F04C28/02 ,  F04C23/00 ,  F04C28/24

Abstract: Oil-injected multistage compressor device including a low-pressure compressor element (2) with a gas inlet (4a) for gas to be compressed and a gas outlet (5a) for low-pressure compressed gas and a high-pressure stage compressor element (3) with a gas inlet (4b) for low-pressure compressed gas and a gas outlet (5b) for high-pressure compressed gas. The gas outlet (5a) of element (2) is connected to inlet (4b) of element (3) via a conduit (6). The conduit (6) has a regulatable intercooler (9) configured to regulate the temperature at the gas inlet (4b) of the high-pressure stage compressor element (3) so that it is above the dew point. The intercooler (9) includes a regulatable air cooler and/or a regulatable water cooler, and is configured to adjust the temperature of the air or water by using a bypass conduit (16) and/or by screening off part of the intercooler (9).

公开(公告)号：US10466155B2

公开(公告)日：2019-11-05

申请号：US15373722

申请日：2016-12-09

Applicant: LIFE TECHNOLOGIES CORPORATION

Inventor： Michael Ward ,  Jason Malkin

IPC: G01N15/14 ,  F04B11/00 ,  F04B23/04 ,  G05D7/06 ,  F04B13/00 ,  F04B49/06 ,  F04C2/08 ,  F04C15/00 ,  G01N15/10 ,  G01N33/48 ,  F04C28/02

Abstract: An embodiment of a system with a minute measure of pulsatility in a flow of a fluid is described that comprises a first pump configured to flow the fluid to a junction at a first flow rate that comprises a measure of pulsatility; and a second pump configured to flow a portion of the fluid from the junction at a second flow rate that is less than the first flow rate to produce a flow of the fluid at a third flow rate from the junction with a minute measure of pulsatility.

公开(公告)号：US10316504B2

公开(公告)日：2019-06-11

申请号：US15176233

申请日：2016-06-08

Applicant: Aqseptence Group, Inc.

Inventor： Mark Jones ,  Clint Hawn

IPC: E03F1/00 ,  F04C25/02 ,  F04C28/02 ,  F04C13/00

Abstract: A vacuum sewage system includes a collection station, a vacuum pump, a sewage pump, a collection tank, a control system, a valve pit, a first conduit extending from the collection station to the valve pit, a second conduit extending from the valve pit and terminating in a closed end, a valve located in the valve pit for selectively permitting sewage and waste water to flow from the valve pit toward the collection station upon activation of the valve, an electric air admission controller or a solenoid for selectively opening and closing the valve, a first sensor associated with the electronic air admission controller or the solenoid and a second sensor located adjacent the closed end of the second conduit. The system may be utilized to monitor and remedy various undesirable operating conditions in the system and to perform routines to increase operating efficiency of the system.