EP1806503B1 - Booster-type gas compressor - Google Patents

Booster-type gas compressor Download PDF

Info

Publication number
EP1806503B1
EP1806503B1 EP07000101A EP07000101A EP1806503B1 EP 1806503 B1 EP1806503 B1 EP 1806503B1 EP 07000101 A EP07000101 A EP 07000101A EP 07000101 A EP07000101 A EP 07000101A EP 1806503 B1 EP1806503 B1 EP 1806503B1
Authority
EP
European Patent Office
Prior art keywords
case
crank
compressed
piston
gas
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.)
Expired - Fee Related
Application number
EP07000101A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1806503A1 (en
Inventor
Hiroshi Inoue
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.)
Anest Iwata Corp
Original Assignee
Anest Iwata 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
Application filed by Anest Iwata Corp filed Critical Anest Iwata Corp
Publication of EP1806503A1 publication Critical patent/EP1806503A1/en
Application granted granted Critical
Publication of EP1806503B1 publication Critical patent/EP1806503B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/128—Crankcases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/18—Pressure in a control cylinder/piston unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Definitions

  • the present invention relates to a booster-type gas compressor in which a compressed gas is further compressed by a reciprocating piston.
  • a suction valve 23 is provided at one side of a top wall 22 of a cylinder 21 and a discharge valve 24 is provided at the other side of the top wall 22.
  • a suction chamber 26 having an inlet 25 and a discharge chamber 28 having an outlet 27 respectively.
  • a crank shaft 31 integrally formed with a driving shaft 30 in a crank case 29 is provided under the cylinder 21.
  • the driving shaft 30 is driven by an electric motor 34 in a motor case 33 mounted to a side wall 29a of the crank case 29 so that a gas may pass through.
  • a piston 39 is moved up and down in a cylinder 21 via a piston rod 35 by the crank shaft 31 formed with the driving shaft 30 to compress a gas such as N 2 introduced in a compressing chamber above the piston 36 via the suction valve 23 and to discharge it from the discharge valve 24 and outlet 27.
  • the compressed gas in the crank case 29 Is partially discharged from an air hole 38 of the crank case 29 to produce loss of energy. Leak of a toxic gas causes air pollution.
  • such a reciprocating-piston-type gas compressor comprises a booster-type gas compressor sucking a compressed gas and compressing it to higher pressure
  • the compressing chamber becomes decompression condition in which a atmospheric pressure gas from an air hole 38 of the crank case 29 flows through around the piston 36 to the compressing chamber above the piston 36 and is mixed in a gas from the suction hole 25 to render density lowered.
  • a ventilating hole 39 is formed in the electric motor case 33 or a fan is mounted to the driving shaft 30 to achieve forcing cooling.
  • the electric motor 34 cannot be completely sealed to render noise leaked or dusts, and solid ingredients in external air are likely to remain in the electric motor 34 or motor case 33.
  • DE -A1-3536618 discloses a lifting-piston compressor according to the preamble of claim 1 which is intended in particular as a booster compressor for compressed-gas installations.
  • the piston of the compressor is connected via a push-rod to a crank shaft which rotates in a crank housing using a drive arrangement.
  • the crank housing interior is drawn off via at least one further compression stage in order to perform a pressure-relief action of the crank housing interior, and the outlet side of the further compression stage is connected to the inlet of the lifting piston compressor.
  • the gases of the further compression stage emerging at the outlet are guided back again to the inlet of the booster-type compressor.
  • JP-A-05157050 relates to a control valve for controlling a flow rate of a return gas in a piston-type compressor so as to keep in the crank case a pressure higher than the atmospheric pressure.
  • EP-A-1116883 discloses a swash-plate compressor driven by an electric motor.
  • the refrigerant is drawn from an intake port to the suction chamber and discharged into an intermediate pressure chamber. From there the refrigerant is partly bypassed into the crank chamber and then circulated into the motor chamber for cooling of the electric motor.
  • An object of the present invention is to provide a booster-type gas compressor comprising a reciprocating piston, pressure difference being reduced between a compressing chamber above the piston and a crank case under the piston thereby preventing wear of each part and unsmoothness of the operation.
  • Fig. 1 shows the first embodiment of a booster-type gas compressor according to the present invention.
  • the basic structure of the booster-type gas compressor is not so different from that in Fig. 4 .
  • the same numerals are allotted to the same members. Its description is omitted and only differences are described.
  • Fig. 1 there is no air hole 38 communicating external air and a compressed-gas introducing hole 11 is formed in an electric motor case 36 instead of a ventilating hole.
  • a compressed-gas feeding path 37 is connected to a compressed-gas introducing hole 11 via a bypath conduit 14 comprising a check valve 12 that closes towards the compressed-gas feeding path 37 and opens in an opposite direction and a pressurre regulator 13 such as a pressure-regulating valve or a pressure reducing valve.
  • a compressed gas is fed into a suction chamber 26 and partially introduced into the crank case 29 via the bypath conduit 14 comprising the check valve 12 and the pressure regulator 13, the compressed-gas introducing hole 11. a motor case 33 and a communicating hole 32 to let the inside of the crank case 29 compressed to more than atmospheric pressure.
  • the compressed gas in the compressed-gas feeding path 37 is partially fed into the crank case 29, so that gas pressure in the crank case 29 becomes more than atmospheric pressure different from a known device.
  • difference in pressure between a compressing chamber above a piston 36 in a cylinder 21 and the inside of the crank case 29 becomes smaller than that in a known device, thereby preventing sliding of the piston 36 from lacking smoothness and preventing each of the bearings 41,42 and preventing a seal from reducing their lives or producing looseness caused by unequal force.
  • pressure of a compressed gas in the crank case 29 is regulated, so that pressure difference from a compression chamber above the piston 37 is regulated as soon as possible thereby achieving stable performance.
  • a pressure regulator 15 may be directly joined to the crank case.
  • the pressure regulator 15 may be a reserve tank comprising a pressure-regulating valve and a check valve thereby achieving similar advantage to that in Fig. 1 .
  • a compressed-gas feeding path 37 is connected to a compressed-gas introducing hole 11 of a motor case 33 via a bypath conduit 14 comprising a check valve 12 that closes towards the compressed-gas feeding path 37 and opens in an opposite direction.
  • a pressure regulator 13 is provided on the compressed-gas feeding path 37 between the bypath conduit 14 and a suction valve 23 thereby achieving similar advantage to that in Fig. 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP07000101A 2006-01-10 2007-01-04 Booster-type gas compressor Expired - Fee Related EP1806503B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006002211A JP2007182821A (ja) 2006-01-10 2006-01-10 ブースター式気体圧縮機

Publications (2)

Publication Number Publication Date
EP1806503A1 EP1806503A1 (en) 2007-07-11
EP1806503B1 true EP1806503B1 (en) 2009-03-11

Family

ID=37761940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07000101A Expired - Fee Related EP1806503B1 (en) 2006-01-10 2007-01-04 Booster-type gas compressor

Country Status (5)

Country Link
US (1) US20070160483A1 (ja)
EP (1) EP1806503B1 (ja)
JP (1) JP2007182821A (ja)
KR (1) KR100815538B1 (ja)
CN (1) CN101000048A (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007042318B4 (de) * 2007-09-06 2017-11-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompakter trockenlaufender Kolbenverdichter
DE102008049238A1 (de) * 2008-05-30 2009-12-03 Wabco Gmbh Vorrichtung zum Betreiben eines Hilfsaggregates eines Fahrzeuges, insbesondere Nutzfahrzeuges
JP5193762B2 (ja) * 2008-09-04 2013-05-08 株式会社日立産機システム ブースタ圧縮機
US20110076164A1 (en) * 2009-09-25 2011-03-31 Wen San Chou Air compressor having tilted piston
JP5412243B2 (ja) * 2009-11-06 2014-02-12 株式会社日立産機システム ブースタ圧縮機
JP5412248B2 (ja) * 2009-11-18 2014-02-12 株式会社日立産機システム 圧縮機
BR112013004376A2 (pt) * 2010-08-27 2019-09-24 Koninl Philips Electronics Nv conjunto compressor configurado para aumentar a pressão de um fluído e método de montar um conjunto compressor que é configurado para aumentar a pressão de um fluído
JP5374524B2 (ja) * 2011-01-26 2013-12-25 住友ゴム工業株式会社 コンプレッサ装置
KR101264371B1 (ko) 2012-04-20 2013-05-14 진권 고압가스 제조용 피스톤식 압축기
JP5668093B2 (ja) * 2013-04-22 2015-02-12 株式会社日立産機システム ブースタ圧縮機
JP6170396B2 (ja) * 2013-09-27 2017-07-26 アネスト岩田株式会社 加圧型ブースター圧縮機
CN108374774A (zh) * 2018-03-27 2018-08-07 习水县文雄水利动力科技有限公司 一种活塞式抽水/气泵
CN108869235A (zh) * 2018-07-04 2018-11-23 蚌埠艾普压缩机制造有限公司 一种用于加氢站高压氢气压缩机的压力调节气缸
CN111852816A (zh) * 2020-06-04 2020-10-30 聂伦喜 天然气降压机
GB2610423A (en) * 2021-09-06 2023-03-08 Gardner Denver Ltd An improved reciprocating compressor
WO2023101771A1 (en) * 2021-12-03 2023-06-08 Energy Recovery, Inc. Fluid handling systems including a compressor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123287A (en) * 1964-03-03 figure
US1874752A (en) * 1930-06-13 1932-08-30 Worthington Pump & Mach Corp Air or gas compressor
US2295790A (en) * 1940-07-30 1942-09-15 Bennie R Hopkins Vacuum pressure pump
US2323068A (en) * 1941-03-29 1943-06-29 Maniscalco Pictro Compressor
GB1244105A (en) * 1969-02-04 1971-08-25 Bitzer Kuehlmaschb G M B H Reciprocating piston compressors
JPS6032983A (ja) * 1983-07-31 1985-02-20 Natl House Ind Co Ltd 空気増圧装置
JPS60118386A (ja) * 1983-11-30 1985-06-25 Sumitomo Metal Ind Ltd サブマ−ジア−ク溶接法
DE3536618A1 (de) * 1985-10-15 1987-04-16 Bauer Kompressoren Hubkolbenverdichter, insbesondere booster-verdichter fuer druckgasanlagen
JPH01257780A (ja) * 1988-04-05 1989-10-13 Mitsubishi Electric Corp 往復式圧縮機
JPH02110278A (ja) * 1989-09-01 1990-04-23 Hitachi Ltd 冷蔵庫用貯蔵ケース
JPH05157050A (ja) * 1991-10-09 1993-06-22 Mitsubishi Heavy Ind Ltd 冷凍空調用開放型圧縮機
JP2001193639A (ja) * 2000-01-11 2001-07-17 Toyota Autom Loom Works Ltd 電動斜板圧縮機
US6652250B2 (en) * 2000-10-16 2003-11-25 Kobe Steel, Ltd. Screw compressor having intermediate shaft bearing

Also Published As

Publication number Publication date
JP2007182821A (ja) 2007-07-19
KR100815538B1 (ko) 2008-03-20
EP1806503A1 (en) 2007-07-11
KR20070075298A (ko) 2007-07-18
US20070160483A1 (en) 2007-07-12
CN101000048A (zh) 2007-07-18

Similar Documents

Publication Publication Date Title
EP1806503B1 (en) Booster-type gas compressor
US20070041847A1 (en) Piston-reciprocating gas compressor
EP1806502A2 (en) Booster compressor
US6796215B1 (en) Membrane pump
JP4411753B2 (ja) オイルフリースクリュー圧縮機
JP2012188934A (ja) 圧縮機の弁装置
US20090047159A1 (en) Multi-stage gas compressing apparatus
KR101253086B1 (ko) 흡입 공기 제어장치를 통한 에너지 절감형 스크류 공기압축기 장치
US20070041858A1 (en) Booster-type compressor
KR20140083757A (ko) 가압 저장된 수소를 활용한 공기 공급 장치 및 이를 포함하는 공기 공급 시스템
EP0926342B1 (en) Seal mechanism protector for compressors
US6871512B2 (en) Motor-driven compressor
CN100434707C (zh) 绕动叶片压缩机的容量改变装置
CN112594153B (zh) 一种节能气体无油压缩机及其多级压缩结构
KR20070021931A (ko) 피스톤-왕복 가스 압축기
JP4015219B2 (ja) 空気圧縮機の負荷軽減装置
CN213928729U (zh) 一种涡旋压缩机
CN220909959U (zh) 压缩机
JP4350603B2 (ja) 気体圧縮機
CN115318072B (zh) 双筒干燥器、气体干燥方法及便携式气体压缩供应装置
CN112524022B (zh) 一种涡旋压缩机
KR102150374B1 (ko) 흡입유로에 슬릿 브로윙을 적용한 대용량 공기압축기의 성능개선 구조
US20220314938A1 (en) Compressor unit
CN112524022A (zh) 一种涡旋压缩机
JP2002115663A (ja) 高圧圧縮設備とその無負荷運転方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070104

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17Q First examination report despatched

Effective date: 20070920

AKX Designation fees paid

Designated state(s): BE

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20091214

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180119

Year of fee payment: 12

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190131