US20060067833A1 - Integral add heat and surge control valve for compressor - Google Patents

Integral add heat and surge control valve for compressor Download PDF

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Publication number
US20060067833A1
US20060067833A1 US11/269,082 US26908205A US2006067833A1 US 20060067833 A1 US20060067833 A1 US 20060067833A1 US 26908205 A US26908205 A US 26908205A US 2006067833 A1 US2006067833 A1 US 2006067833A1
Authority
US
United States
Prior art keywords
inlet
outlet
housing
add
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/269,082
Other languages
English (en)
Inventor
Christopher McAuliffe
Craig Beers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hamilton Sundstrand Corp
Original Assignee
Hamilton Sundstrand Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/978,641 external-priority patent/US7575421B2/en
Application filed by Hamilton Sundstrand Corp filed Critical Hamilton Sundstrand Corp
Priority to US11/269,082 priority Critical patent/US20060067833A1/en
Assigned to HAMILTON SUNDSTRAND reassignment HAMILTON SUNDSTRAND ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEERS, CRAIG M., MCAULIFFE, CHRISTOPHER
Publication of US20060067833A1 publication Critical patent/US20060067833A1/en
Priority to JP2006297277A priority patent/JP4722012B2/ja
Priority to EP11004627.3A priority patent/EP2377759B1/fr
Priority to EP06255673A priority patent/EP1783048B1/fr
Assigned to HAMILTON SUNDSTRAND CORPORATION reassignment HAMILTON SUNDSTRAND CORPORATION CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE'S NAME ON ORIGINAL COVER SHEET PREVIOUSLY RECORDED ON REEL 017229 FRAME 0317. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE WAS INCORRECTLY RECORDED AS "HAMILTON SUNDSTRAND". ASSIGNEE SHOULD BE "HAMILTON SUNDSTRAND CORPORATION". Assignors: BEERS, CRAIG M., MCAULIFFE, CHRISTOPHER
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/02—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0238—Details or means for fluid reinjection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
    • B64D2013/0603—Environmental Control Systems
    • B64D2013/0607—Environmental Control Systems providing hot air or liquid for deicing aircraft parts, e.g. aerodynamic surfaces or windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
    • B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
    • B64D2013/0603—Environmental Control Systems
    • B64D2013/0644—Environmental Control Systems including electric motors or generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/50—On board measures aiming to increase energy efficiency

Definitions

  • This invention relates to a compressor that is used, for example, in an aircraft for supplying compressed air to a cabin air conditioning system.
  • air entering a compressor inlet contains water and operates at temperatures below freezing. Ice forming at the inlet reduces the thermodynamic performance of the compressor, can cause damage to the compressor as the ice sheds and can damage the bearing and support structure of the compressor.
  • Compressors may occasionally operate in an undesirable surge condition in which the ratio between compressor outlet and compressor inlet pressures is undesirable. To avoid surge it is desirable to either lower the compressor outlet pressure or raise the compressor inlet pressure to obtain a pressure ratio within a desired range.
  • the invention provides a compressed air system that includes a compressor having an inlet and an outlet.
  • a duct fluidly connects the outlet to the inlet and has a valve arranged in the duct.
  • a controller communicates with the valve and commands the valve to move between first and second positions in response to a surge condition and/or for an add-heat condition to regulate an amount of fluid flowing through the duct.
  • the valve opens to provide hot air from the compressor outlet to deice the inlet or to provide the higher pressure compressor outlet air to the lower pressure compressor inlet air to obtain a pressure ratio in a desired range.
  • the inventive compressed air unit is designed to provide a compact arrangement so that the valve providing the heated, pressurized air to the inlet is located in close proximity to the inlet for a rapid response time.
  • the duct comprises a relatively short length of tubing interconnecting an add-heat supply outlet and an add-heat plenum inlet, which are provided by a housing of the compressor.
  • the housing also includes an add-heat plenum having an annular wall arranged at the inlet to provide an annular cavity. Hot air from the compressor outlet is provided to the plenum to heat the annular wall quickly at the inlet to prevent deicing.
  • the present invention provides a deicing and surge control device that deices the compressor and prevents surge.
  • FIG. 1 is a schematic of the inventive compressed air system.
  • FIG. 2 is a perspective view of an inventive compressed air unit having a combined electric motor and compressor with integrated add heat and surge control features.
  • FIG. 3 is a cross-sectional view of the inventive compressed air unit shown in FIG. 2 .
  • a compressed air system is shown schematically at 10 in FIG. 1 .
  • the compressed air system 10 includes a compressed air unit 12 comprising a compressor 14 driven by an electric motor 16 .
  • a diffuser 18 is arranged before an outlet 22 of the compressor 14 , as is known in the art.
  • the diffuser 18 is manipulated by an actuator 19 to vary its area. Air enters the compressor 14 through an inlet 20 .
  • Pressure and temperature inlet sensors 24 and 26 are arranged at the inlet 20 , and a pressure outlet sensor 28 is arranged at the outlet 22 .
  • the actuator 19 and sensors 24 , 26 and 28 are schematically shown in communication with a controller 34 .
  • the controller 34 uses the sensors 24 , 26 and 28 to determine surge and add-heat conditions.
  • the compressed air system 10 described above is suitable for providing, for example, compressed air to an air cycle machine for producing conditioned cabin air.
  • the present invention utilizes a duct 30 to fluidly connect the inlet 20 and outlet 22 .
  • a valve 32 is arranged between the inlet 20 and outlet 22 within the duct 30 .
  • the controller 34 is in communication with the valve 32 to move it between first and second positions F and S in response to the surge and add-heat conditions. According to this invention, only one valve is used for these conditions.
  • the valve 32 is a butterfly valve.
  • wires 36 extend from a housing 40 to provide power to the electric motor 16 .
  • the housing 40 includes motor, outlet, add-heat and inlet housing portions 42 , 44 , 46 and 48 secured to one another by fasteners 49 .
  • a screen 50 is arranged between the add-heat housing 46 and the inlet housing 48 .
  • a cooling supply plenum 52 is arranged at the inlet 20 to provide cooling air for the electric motor 16 .
  • the cooling supply plenum 52 is defined, in part, by first and second flanges 51 and 53 .
  • the cooling supply plenum 52 includes an outlet 54 that is connected to a cooling inlet 56 by a bearing cooling duct 38 (shown in FIG. 2 ).
  • Bearings 62 support a rotor 64 of the electric motor 16 .
  • a bearing cooling inlet 58 provides cooling air to a bearing cooling outlet 60 via a duct (not shown).
  • An impeller 66 is secured to the rotor 64 .
  • the impeller 66 has an inlet side 65 and outlet side 67 .
  • the diffuser 18 is arranged on the outlet side 67 between the impeller 66 and the outlet 22 .
  • the housing 40 includes a diffuser shroud 68 in close proximity to the impeller 66 .
  • the diffuser shroud 68 extends beyond an end 69 of the impeller 66 .
  • the housing 40 provides an add-heat plenum 72 formed by the diffuser shroud 68 and the add-heat housing 46 .
  • the diffuser shroud 68 provides a curved annular wall 70 that tapers radially outwardly as it extends axially away from the end 69 of the impeller 66 .
  • the outlet housing 44 provides an add-heat supply outlet 74 (best shown in FIG. 2 ) that is connected to an add-heat plenum inlet 76 of the add-heat housing 46 .
  • the duct 30 is relatively short having a length L 2 (represented by the dashed line) that is less than a length L 1 of the compressed air unit 12 . This relatively short length enables the curved annular wall 70 to be quickly heated in response to sensing an add-heat condition. Similarly, the response time when sensing a surge condition is rapid. A remotely located valve may not provide a desirable response time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pulmonology (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US11/269,082 2004-09-22 2005-11-08 Integral add heat and surge control valve for compressor Abandoned US20060067833A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US11/269,082 US20060067833A1 (en) 2004-09-22 2005-11-08 Integral add heat and surge control valve for compressor
JP2006297277A JP4722012B2 (ja) 2005-11-08 2006-11-01 圧縮空気システムおよび圧縮空気ユニット
EP11004627.3A EP2377759B1 (fr) 2005-11-08 2006-11-03 Soupape intégrée d'un compresseur pour la régulation de l'apport de chaleur et du pompage
EP06255673A EP1783048B1 (fr) 2005-11-08 2006-11-03 Soupape intégrée d'un compresseur pour la régulation de l'apport de chaleur et du pompage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US61199204P 2004-09-22 2004-09-22
US10/978,641 US7575421B2 (en) 2004-09-22 2004-11-01 Integral motor cooling and compressor inlet
US11/269,082 US20060067833A1 (en) 2004-09-22 2005-11-08 Integral add heat and surge control valve for compressor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10/978,641 Continuation-In-Part US7575421B2 (en) 2004-09-22 2004-11-01 Integral motor cooling and compressor inlet

Publications (1)

Publication Number Publication Date
US20060067833A1 true US20060067833A1 (en) 2006-03-30

Family

ID=37709468

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/269,082 Abandoned US20060067833A1 (en) 2004-09-22 2005-11-08 Integral add heat and surge control valve for compressor

Country Status (3)

Country Link
US (1) US20060067833A1 (fr)
EP (2) EP2377759B1 (fr)
JP (1) JP4722012B2 (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080184515A1 (en) * 2007-02-07 2008-08-07 Indoor Biotechnologies, Inc. System and Method for Particle Collection
US20090120114A1 (en) * 2007-11-12 2009-05-14 Ingersoll-Rand Company Compressor with flow control sensor
US20100316505A1 (en) * 2009-06-11 2010-12-16 Illinois Tool Works Inc. Compressor Freeze Up Prevention in Cold Weather
CN102182700A (zh) * 2011-05-19 2011-09-14 哈尔滨工业大学 涡轮增压系统压气机风量分配控制的喘振保护方法及实现该方法的喘振保护装置
JP2012020728A (ja) * 2010-07-16 2012-02-02 Hamilton Sundstrand Corp キャビン空気コンプレッサ装置およびその冷却方法
US20120114463A1 (en) * 2010-11-04 2012-05-10 Hamilton Sundstrand Corporation Motor driven cabin air compressor with variable diffuser
US20140026993A1 (en) * 2012-07-30 2014-01-30 Hamilton Sundstrand Corporation Cabin air compressor heat housing
CN103573711A (zh) * 2012-08-07 2014-02-12 哈米尔顿森德斯特兰德公司 马达壳体
US8657568B2 (en) 2010-04-19 2014-02-25 Hamilton Sundstrand Corporation Variable turbine nozzle and valve
US20140097165A1 (en) * 2007-04-30 2014-04-10 Illinois Tool Works Inc. Portable air compressor/generator control method and system
EP2808257A1 (fr) * 2013-05-28 2014-12-03 Hamilton Sundstrand Corporation Ventilateur de refroidissement de moteur et structure de confinement
US20150166186A1 (en) * 2013-12-18 2015-06-18 Hamilton Sundstrand Corporation Aircraft air-conditioning heat exchanger contamination detection
US9457908B2 (en) 2012-09-20 2016-10-04 Hamilton Sundstrand Corporation Self-cooled motor driven compressor
US20160288912A1 (en) * 2015-04-01 2016-10-06 The Boeing Company Ram air system and methods of manufacturing the same
US20170015426A1 (en) * 2015-07-13 2017-01-19 Hamilton Sundstrand Corporation Raf bit for surge detection
US20170122328A1 (en) * 2015-11-04 2017-05-04 Hamilton Sundstrand Corporation Hydraulic pump systems
US10144083B2 (en) 2013-02-22 2018-12-04 Illinois Tool Works Inc. Multi-operator engine driven welder system
US10184714B1 (en) 2017-08-15 2019-01-22 New York Air Brake, LLC Deicing system for air compressor aftercooler
CN116771712A (zh) * 2023-08-23 2023-09-19 中粮生化(成都)有限公司 离心压缩机防喘开车系统及方法

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US20120020776A1 (en) * 2010-07-26 2012-01-26 Colson Darryl A Variable diffuser actuation linkage for a cabin air compressor
US8887486B2 (en) * 2011-10-24 2014-11-18 Hamilton Sundstrand Corporation Ram air fan inlet housing
EP2602191B1 (fr) * 2011-12-05 2016-05-11 Hamilton Sundstrand Corporation Compresseur motorisé d'air de cabine doté d'un diffuseur variable
EP2951440B1 (fr) 2013-01-31 2019-07-31 Danfoss A/S Compresseur centrifuge à plage de fonctionnement étendue
JP2015232302A (ja) * 2014-06-10 2015-12-24 株式会社Ihi 圧縮機
US10472072B2 (en) * 2015-11-25 2019-11-12 Hamilton Sundstrand Corporation Supply tube for sensor
JP6578018B2 (ja) * 2015-12-22 2019-09-18 三菱重工コンプレッサ株式会社 遠心式圧縮機
EP3411596B1 (fr) 2016-02-04 2023-11-01 Danfoss A/S Régulation de pompage active dans des compresseurs centrifuges avec injection à microjet
CN107862116B (zh) * 2017-10-25 2021-11-02 国网湖南省电力公司 一种用于热风除冰的绝缘风管的参数确定方法

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US4156578A (en) * 1977-08-02 1979-05-29 Agar Instrumentation Incorporated Control of centrifugal compressors
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US2301063A (en) * 1941-07-12 1942-11-03 Ingersoll Rand Co Pumping mechanism
US3976390A (en) * 1974-12-23 1976-08-24 Chicago Pneumatic Tool Company Means for controlling flow instability in centrifugal compressors
US4156578A (en) * 1977-08-02 1979-05-29 Agar Instrumentation Incorporated Control of centrifugal compressors
US4505328A (en) * 1978-12-13 1985-03-19 Schmitt Robert F System for conditioning air
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US5798941A (en) * 1996-01-02 1998-08-25 Woodward Governor Company Surge prevention control system for dynamic compressors
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US20030113215A1 (en) * 2001-12-13 2003-06-19 Lg Electronics Inc. Reverse rotation preventing structure of centrifugal compressor

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080184515A1 (en) * 2007-02-07 2008-08-07 Indoor Biotechnologies, Inc. System and Method for Particle Collection
US11499557B2 (en) * 2007-04-30 2022-11-15 Illinois Tool Works Inc. Portable air compressor/generator control method and system
US20140097165A1 (en) * 2007-04-30 2014-04-10 Illinois Tool Works Inc. Portable air compressor/generator control method and system
US20090120114A1 (en) * 2007-11-12 2009-05-14 Ingersoll-Rand Company Compressor with flow control sensor
US7762789B2 (en) 2007-11-12 2010-07-27 Ingersoll-Rand Company Compressor with flow control sensor
US20100316505A1 (en) * 2009-06-11 2010-12-16 Illinois Tool Works Inc. Compressor Freeze Up Prevention in Cold Weather
US8845300B2 (en) * 2009-06-11 2014-09-30 Illinois Tool Works Inc. Compressor freeze up prevention in cold weather
US8657568B2 (en) 2010-04-19 2014-02-25 Hamilton Sundstrand Corporation Variable turbine nozzle and valve
JP2012020728A (ja) * 2010-07-16 2012-02-02 Hamilton Sundstrand Corp キャビン空気コンプレッサ装置およびその冷却方法
US20120114463A1 (en) * 2010-11-04 2012-05-10 Hamilton Sundstrand Corporation Motor driven cabin air compressor with variable diffuser
CN102182700A (zh) * 2011-05-19 2011-09-14 哈尔滨工业大学 涡轮增压系统压气机风量分配控制的喘振保护方法及实现该方法的喘振保护装置
CN103573705A (zh) * 2012-07-30 2014-02-12 哈米尔顿森德斯特兰德公司 座舱空气压缩机热壳体
US20140026993A1 (en) * 2012-07-30 2014-01-30 Hamilton Sundstrand Corporation Cabin air compressor heat housing
US20140044531A1 (en) * 2012-08-07 2014-02-13 Seth E. Rosen Motorhousing
CN103573711A (zh) * 2012-08-07 2014-02-12 哈米尔顿森德斯特兰德公司 马达壳体
US9181959B2 (en) * 2012-08-07 2015-11-10 Hamilton Sundstrand Corporation Motor housing
US9457908B2 (en) 2012-09-20 2016-10-04 Hamilton Sundstrand Corporation Self-cooled motor driven compressor
US10144083B2 (en) 2013-02-22 2018-12-04 Illinois Tool Works Inc. Multi-operator engine driven welder system
EP2808257A1 (fr) * 2013-05-28 2014-12-03 Hamilton Sundstrand Corporation Ventilateur de refroidissement de moteur et structure de confinement
US9862493B2 (en) 2013-05-28 2018-01-09 Hamilton Sundstrand Corporation Motor cooling blower and containment structure
US9862495B2 (en) * 2013-12-18 2018-01-09 Hamilton Sundstrand Corporation Aircraft air-conditioning heat exchanger contamination detection
US20150166186A1 (en) * 2013-12-18 2015-06-18 Hamilton Sundstrand Corporation Aircraft air-conditioning heat exchanger contamination detection
US9708069B2 (en) * 2015-04-01 2017-07-18 The Boeing Company Ram air system and methods of manufacturing the same
US20160288912A1 (en) * 2015-04-01 2016-10-06 The Boeing Company Ram air system and methods of manufacturing the same
US20170015426A1 (en) * 2015-07-13 2017-01-19 Hamilton Sundstrand Corporation Raf bit for surge detection
US9988153B2 (en) * 2015-07-13 2018-06-05 Hamilton Sundstrand Space Systems RAF bit for surge detection
US20170122328A1 (en) * 2015-11-04 2017-05-04 Hamilton Sundstrand Corporation Hydraulic pump systems
US10184714B1 (en) 2017-08-15 2019-01-22 New York Air Brake, LLC Deicing system for air compressor aftercooler
WO2019035812A1 (fr) * 2017-08-15 2019-02-21 New York Air Brake, LLC Système de dégivrage pour refroidisseur final de compresseur d'air
CN110997435A (zh) * 2017-08-15 2020-04-10 纽约气闸有限公司 用于空气压缩机后冷却器的除冰系统
CN116771712A (zh) * 2023-08-23 2023-09-19 中粮生化(成都)有限公司 离心压缩机防喘开车系统及方法

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EP2377759A1 (fr) 2011-10-19
EP1783048A2 (fr) 2007-05-09
JP4722012B2 (ja) 2011-07-13
EP1783048A3 (fr) 2009-08-19
EP1783048B1 (fr) 2011-06-08
JP2007132344A (ja) 2007-05-31
EP2377759B1 (fr) 2015-10-14

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