EP0389036B1 - Schraubenverdichter und sein Betriebsverfahren - Google Patents

Schraubenverdichter und sein Betriebsverfahren Download PDF

Info

Publication number
EP0389036B1
EP0389036B1 EP90200581A EP90200581A EP0389036B1 EP 0389036 B1 EP0389036 B1 EP 0389036B1 EP 90200581 A EP90200581 A EP 90200581A EP 90200581 A EP90200581 A EP 90200581A EP 0389036 B1 EP0389036 B1 EP 0389036B1
Authority
EP
European Patent Office
Prior art keywords
compressor
stator housing
water
gas
injected
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 - Lifetime
Application number
EP90200581A
Other languages
English (en)
French (fr)
Other versions
EP0389036A1 (de
Inventor
Hans Hendrik Jantzen
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.)
Grass-Air Holding BV
Original Assignee
Grass-Air Holding BV
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 Grass-Air Holding BV filed Critical Grass-Air Holding BV
Publication of EP0389036A1 publication Critical patent/EP0389036A1/de
Application granted granted Critical
Publication of EP0389036B1 publication Critical patent/EP0389036B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating

Definitions

  • the invention relates to a screw compressor with two parallel screws engaging with each other, one of which is driven while the other is carried, surrounded by a stator housing and provided with an inlet for the gas to be compressed and an outlet for the compressed gas, said stator housing also having an injection point through which water is directly injected into the stator housing, and to a method of operation thereof.
  • water only is injected at one point, i.e. near the outlet for the compressed gas.
  • the purpose of the water injection is to lower the temperature of the compressed gas and make it as far as possible the same as the inlet temperature of the gas, in particular air.
  • a so-called oil-free compressor therefore has great advantages, but no practical embodiments are known in practice.
  • the object of the invention is to produce a compressor and a method of operation thereof by means of which it is in fact possible to obtain isothermal compression economically with water injection alone, provided that a number of conditions are met.
  • the screw compressor according to the invention is characterized in that said injection point is located at a place in the stator housing where the pressure is equal to 2 P 3 plus or minus 0.5 bar, and in that further injection points are provided at a place in the stator housing where the pressure is equal to P 3 plus or minus 0.5 bar and at the inlet side of the gas, P being equal to the absolute final pressure of the compressor.
  • the water therefore has to be injected simultaneously at several, very specific points.
  • the method according to the invention is characterized in that the quantity of water injected per unit time is 1% and 2% of the capacity of the compressor, and the temperature of the injected water is at least 5 K lower than the temperature of the gas at the inlet of the compressor.
  • the compressor which is conventional per se, comprises a screw 1 with a driving shaft 2.
  • a screw 3 is in engagement with said screw 1 and in operation is carried by the screw 1. There is no mechanical coupling between the two screws or rotors.
  • the screws 1 and 3 are supported in and enclosed by a stator housing 4.
  • the gas to be compressed is fed in at the lefthand side of the housing 4, through a transverse feed 5 (see Fig. 2).
  • the compressed gas is discharged at the righthand side of the housing 4, through an axial outlet 6.
  • water is injected into the interior of the compressor. This water serves not only for cooling of the gas, but also for lubrication of the contact faces of the rotors 1 and 3.
  • an injection point is located at point A.
  • This injection point A is directed towards the contact face of the rotors 1 and 3.
  • point A lies at a place where the pressure is equal to 2 P 3 plus or minus 0.5 bar, P being equal to the absolute final pressure at the compressor outlet.
  • the two points B lie at a place where the pressure is equal to P 3 plus or minus 0.5 bar.
  • the two points C lie at a place where the pressure is equal to the inlet pressure.
  • the injected quantity of water per unit time must lie between 1% and 2% of the capacity of the compressor.
  • approximately 50% of the total quantity of water must be injected in point A, approximately 20% in each point B, and approximately 5% in each point C.
  • the temperature of the injected water is also of essential importance and must be at least 5 K lower than the temperature of the gas sucked in.
  • the example taken is a compressor with an absolute pressure of 7 bar and a speed of 6,475 r.p.m.
  • the shaft power is 7.38 kW/m3/min.
  • the shaft power is 6.03 kW/m3/min.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (4)

  1. Schraubenverdichter mit zwei zueinander parallelen und aneinander angreifenden Schrauben (1, 3), von denen die eine (1) angetrieben wird, während die andere (3) mitgenommen wird, umgeben von einem Statorgehäuse (4) und versehen mit einem Einlaß (5) für das zu verdichtende Gas, sowie mit einem Auslaß (6) für das verdichtete Gas versehen sind, wobei das Statorgehäuse (4) außerdem einen Einspritzpunkt aufweist, durch den Wasser direkt in das Statorgehäuse (4) eingespritzt wird,
    dadurch gekennzeichnet, daß sich der Einspritzpunkt an einer Stelle (A) in dem Statorgehäuse (4) befindet, wo der Druck 2 P 3
    Figure imgb0008
     plus oder minus 0,5 bar beträgt, und daß weitere Einspritzpunkte (B und C) jeweils an einer Stelle in dem Statorgehäuse (4) vorgesehen sind, wo der Druck P 3
    Figure imgb0009
     plus oder minus 0,5 bar ist bzw. an der Einlaßseite des Gases, wobei P der absolute Enddruck des Verdichters ist.
  2. Schraubenverdichter nach Anspruch 1,
    dadurch gekennzeichnet, daß der erstgenannte Einspritzpunkt (A) in Richtung auf die Kontaktfläche zwischen den beiden Schrauben (1, 3) gerichtet ist und die übrigen Einspritzpunkte (B und C) in zwei Gruppen von je zwei angeordnet und schräg nach außen gerichtet sind.
  3. Verfahren zum Betreiben eines Schraubenverdichters nach Anspruch 1, dadurch gekennzeichnet, daß die Menge des pro Zeiteinheit eingespritzen Wassers 1 % bis 2 % der Kapazität des Verdichters beträgt und die Temperatur des eingespritzten Wassers wenigsten 5 K niedriger als die Temperatur des Gases am Einlaß (5) des Verdichters ist.
  4. Verfahren nach Anspruch 3,
    dadurch gekennzeichnet, daß die Menge des eingespritzen Wassers an dem erstgenannten Einspritzpunkt (A) ca. 50 % der Gesamtmenge des eingespritzten Wassers beträgt, an jedem des Satzes der bei P 3
    Figure imgb0010
     plus oder minus 0,5 bar liegenden Einspritzpunkte (B) ca. 20 % beträgt und an jedem des Satzes der an der Einlaßseite liegenden Einspritzpunkte (C) ca. 5 % beträgt.
EP90200581A 1989-03-21 1990-03-09 Schraubenverdichter und sein Betriebsverfahren Expired - Lifetime EP0389036B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8900694 1989-03-21
NL8900694A NL8900694A (nl) 1989-03-21 1989-03-21 Schroefcompressor en werkwijze voor het bedrijven daarvan.

Publications (2)

Publication Number Publication Date
EP0389036A1 EP0389036A1 (de) 1990-09-26
EP0389036B1 true EP0389036B1 (de) 1993-07-28

Family

ID=19854333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90200581A Expired - Lifetime EP0389036B1 (de) 1989-03-21 1990-03-09 Schraubenverdichter und sein Betriebsverfahren

Country Status (6)

Country Link
EP (1) EP0389036B1 (de)
AT (1) ATE92158T1 (de)
DE (1) DE69002358T2 (de)
DK (1) DK0389036T3 (de)
ES (1) ES2043243T3 (de)
NL (1) NL8900694A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018023177A1 (en) 2016-08-01 2018-02-08 Atlas Copco Airpower, Naamloze Vennootschap Liquid-injected compressor or expander element and method for controlling the liquid injection of a compressor or expander device
EP3467315A1 (de) 2017-10-04 2019-04-10 Ingersoll-Rand Company Schraubenverdichter mit öleinspritzung in mehreren volumenverhältnissen

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9211405D0 (en) 1992-05-29 1992-07-15 Nat Power Plc A compressor for supplying compressed gas
AU675792B2 (en) * 1992-05-29 1997-02-20 Innogy Plc A gas compressor
GB2300673B (en) * 1992-05-29 1997-01-15 Nat Power Plc A gas turbine plant
DE4447097A1 (de) * 1994-12-29 1996-07-04 Guenter Kirsten Verdichteranlage
DE19543879C2 (de) * 1995-11-24 2002-02-28 Guenter Kirsten Schraubenverdichter mit Flüssigkeitseinspritzung
JPH11270484A (ja) * 1998-03-24 1999-10-05 Taiko Kikai Industries Co Ltd スクリューロータ型ウエット真空ポンプ
JP3831110B2 (ja) 1998-03-25 2006-10-11 大晃機械工業株式会社 真空ポンプのスクリューロータ
CN106979160A (zh) * 2017-04-26 2017-07-25 珠海格力电器股份有限公司 螺杆压缩机、空调装置及制冷装置
JP6899288B2 (ja) * 2017-09-04 2021-07-07 株式会社日立産機システム スクリュー圧縮機
DE202018000178U1 (de) * 2018-01-12 2019-04-15 Leybold Gmbh Kompressor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535057A (en) * 1968-09-06 1970-10-20 Esper Kodra Screw compressor
GB1413426A (en) * 1973-04-09 1975-11-12 Zimmern B Rotary air compressor sets with injection of water
DE2801408A1 (de) * 1978-01-13 1979-07-19 Linde Ag Verfahren und vorrichtung zum kuehlen eines in einem kaeltekreislauf angeordneten verdichters der drehkolbenbauart
DE2853264A1 (de) * 1978-12-09 1980-06-19 Rietschle Masch App Verfahren und einrichtung zur einspritzkuehlung von vakuumpumpen
FR2603666B1 (fr) * 1986-09-10 1990-11-09 Zimmern Bernard Compresseur injecte a commutateur de liquide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018023177A1 (en) 2016-08-01 2018-02-08 Atlas Copco Airpower, Naamloze Vennootschap Liquid-injected compressor or expander element and method for controlling the liquid injection of a compressor or expander device
EP3467315A1 (de) 2017-10-04 2019-04-10 Ingersoll-Rand Company Schraubenverdichter mit öleinspritzung in mehreren volumenverhältnissen

Also Published As

Publication number Publication date
DE69002358T2 (de) 1994-02-10
NL8900694A (nl) 1990-10-16
DK0389036T3 (da) 1993-09-27
DE69002358D1 (de) 1993-09-02
ATE92158T1 (de) 1993-08-15
ES2043243T3 (es) 1993-12-16
EP0389036A1 (de) 1990-09-26

Similar Documents

Publication Publication Date Title
EP0389036A1 (de) Schraubenverdichter und sein Betriebsverfahren
EP1319132B1 (de) Mehrstufiger hochdruckkreiselverdichter
US3859815A (en) Two-stage compression apparatus
US4797068A (en) Vacuum evacuation system
US5226294A (en) Compressor arrangement suitable for transport refrigeration systems
MY119733A (en) Rotary compressor
US3184155A (en) Motor compressor unit
KR940021904A (ko) 연소기 터어빈과 다단식 기어압축기의 조합장치에서 압축가스 흐름을 공급하기 위한 장치 및 방법
US20020044876A1 (en) Screw compressor
JPH11294362A (ja) スクリュー圧縮機
EP0347706B1 (de) Mehrstufiges Vakuumpumpenaggregat
GB1570150A (en) Process and apparatus for supplying compressed gas
US7059837B2 (en) Variable speed oil-injected screw compressors
EP0105315B1 (de) Verdichter des hermetischen typs
EP0992747A3 (de) Klimaanlagen
SE500488C2 (sv) Skruvkompressor med tätningsorgan
US5846066A (en) Vacuum pumps with claw-type rotor and roots-type rotor near the outlet
RU2062362C1 (ru) Многоступенчатый центробежный компрессор
CS207321B2 (en) Compressor set
SU1110935A1 (ru) Ротационный компрессор
EP1174621B1 (de) Schraubenverdichter
GB832386A (en) Improvements in rotary displacement machines
US3093300A (en) Axial flow compressor
ATE142553T1 (de) Misch- und druckluftfördergerät
SU883558A1 (ru) Ротор винтовой компрессорной машины

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900726

17Q First examination report despatched

Effective date: 19920427

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 92158

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 69002358

Country of ref document: DE

Date of ref document: 19930902

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3008880

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2043243

Country of ref document: ES

Kind code of ref document: T3

EPTA Lu: last paid annual fee
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
EAL Se: european patent in force in sweden

Ref document number: 90200581.8

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GR

Payment date: 20030124

Year of fee payment: 14

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

Ref country code: NL

Payment date: 20030131

Year of fee payment: 14

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

Ref country code: GB

Payment date: 20030224

Year of fee payment: 14

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

Ref country code: FR

Payment date: 20030320

Year of fee payment: 14

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

Ref country code: DK

Payment date: 20030321

Year of fee payment: 14

Ref country code: BE

Payment date: 20030321

Year of fee payment: 14

Ref country code: AT

Payment date: 20030321

Year of fee payment: 14

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

Ref country code: SE

Payment date: 20030325

Year of fee payment: 14

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

Ref country code: DE

Payment date: 20030403

Year of fee payment: 14

Ref country code: CH

Payment date: 20030403

Year of fee payment: 14

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

Ref country code: ES

Payment date: 20030429

Year of fee payment: 14

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

Ref country code: LU

Payment date: 20030512

Year of fee payment: 14

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

Ref country code: LU

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

Effective date: 20040309

Ref country code: GB

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

Effective date: 20040309

Ref country code: AT

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

Effective date: 20040309

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

Ref country code: SE

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

Effective date: 20040310

Ref country code: ES

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

Effective date: 20040310

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

Ref country code: LI

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

Effective date: 20040331

Ref country code: DK

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

Effective date: 20040331

Ref country code: CH

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

Effective date: 20040331

Ref country code: BE

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

Effective date: 20040331

BERE Be: lapsed

Owner name: *GRASS-AIR HOLDING B.V.

Effective date: 20040331

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

Ref country code: NL

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

Effective date: 20041001

Ref country code: DE

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

Effective date: 20041001

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

Ref country code: GR

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

Effective date: 20041006

GBPC Gb: european patent ceased through non-payment of renewal fee
EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 20041130

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20041001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050309

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040310