DE19916983A1 - Screw compressor with variable RPM governing has slide with radially disposed outlet port, and by axial extent in all positions overlaps rotors with exception of radially disposed outlet port - Google Patents

Screw compressor with variable RPM governing has slide with radially disposed outlet port, and by axial extent in all positions overlaps rotors with exception of radially disposed outlet port

Info

Publication number
DE19916983A1
DE19916983A1 DE1999116983 DE19916983A DE19916983A1 DE 19916983 A1 DE19916983 A1 DE 19916983A1 DE 1999116983 DE1999116983 DE 1999116983 DE 19916983 A DE19916983 A DE 19916983A DE 19916983 A1 DE19916983 A1 DE 19916983A1
Authority
DE
Germany
Prior art keywords
slide
outlet port
radially disposed
rotors
disposed outlet
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.)
Withdrawn
Application number
DE1999116983
Other languages
German (de)
Inventor
Dieter Mosemann
Ottomar Neuwirth
Horst Maier
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.)
GEA Refrigeration Germany GmbH
Original Assignee
Grasso GmbH Refrigeration Technology
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 Grasso GmbH Refrigeration Technology filed Critical Grasso GmbH Refrigeration Technology
Priority to DE1999116983 priority Critical patent/DE19916983A1/en
Publication of DE19916983A1 publication Critical patent/DE19916983A1/en
Withdrawn legal-status Critical Current

Links

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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F04C28/12—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
    • F04C28/125—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves with sliding valves controlled by the use of fluid other than the working fluid
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The screw compressor has a slide(2) with a radially disposed outlet port(3). The slide by its axial extent in all positions in relation to the rotors(1) overlaps these with the exception of the radially disposed outlet port. The position of the slide is established depending upon operating conditions, suction pressure, ultimate pressure, working medium and type of operation with or without economizer. Displacement of the slide may be produced by a hydraulic system, spring force or by pressure differentials.

Description

Anwendungsgebietfield of use

Die Erfindung betrifft einen Schraubenverdichter, mit Drehzahlregelung und mit parallel zu den Rotoren angeordnetem Regelschieber, der axial verschiebbar ist.The invention relates to a screw compressor, with speed control and with control slide arranged parallel to the rotors, which is axially displaceable.

Stand der TechnikState of the art

Bekannte Schraubenverdichter bestehen hauptsächlich aus den Hauptbauteilen Gehäuse, Rotoren, Leistungsregelung und Vorrichtungen zum Zu- oder Abführen von Öl.Known screw compressors mainly consist of the main components Housing, rotors, power control and devices for feeding or discharging of oil.

Am Gehäuse befinden sich Endwände, in denen die Rotoren gelagert sind. An den Rotoren befinden sich Vorrichtungen zum Kraftausgleich. Weiterhin befindet sich in den Endwänden Ein- und Auslaß für das Arbeitsmedium.There are end walls on the housing in which the rotors are mounted. To the Rotors are devices for force balancing. Still located Inlet and outlet for the working medium in the end walls.

Zur Leistungsregelung eines Schraubenverdichters ist parallel zu den Rotoren ein axial verschiebbarer Regelschieber angeordnet, dessen der Druckseite zugewandte Stirnfläche Kanalteile des Auslasses aufweist und dessen der Saugseite zugewandte Stirnfläche an die Stirnfläche eines Hubbegrenzungsstückes angepaßt ist. Ein derartiger Regelschieber ist verstellbar und wird hydraulisch angetrieben. Derzeit sind bei Schraubenverdichtern mit Leistungsregelung zwei Ausführungen bekannt. Einmal Schraubenverdichter mit veränderlicher Drehzahl zur Veränderung des Förderstromes oder Ansaugvolumenstromes, oder Schraubenverdichter mit fester Drehzahl und Schiebern zur Förderstromänderung und zur Änderung der inneren Verdichtung.To regulate the output of a screw compressor is a parallel to the rotors axially displaceable control slide arranged, the one facing the pressure side End face has channel parts of the outlet and its facing the suction side End face is adapted to the end face of a stroke limiting piece. On such control slide is adjustable and is hydraulically driven. There are currently two versions of screw compressors with capacity control known. One screw compressor with variable speed Change in the flow rate or intake volume flow, or Screw compressor with fixed speed and sliders for changing the flow rate and to change the internal compression.

Nachteilig ist, daß beim Betreiben drehzahlgeregelter Schraubenverdichter bei Abweichung von ausgewähltem bestem innerem Volumen- Verkleinerungsverhältnis, bei Über- oder Unterverdichtung, ein hoher Energiemehrverbrauch eintritt.The disadvantage is that when operating speed-controlled screw compressors in the event of a deviation from the selected best internal volume  Reduction ratio, with over or under compression, a high one Additional energy consumption occurs.

Aufgabe der ErfindungObject of the invention

Die Aufgabe der Erfindung besteht darin, daß bei Schraubenverdichtern mit veränderlicher Drehzahl die innere Verdichtung an die aktuellen Betriebsparameter anzupassen ist und somit den Energieverbrauch zu reduzieren.The object of the invention is that with screw compressors variable speed the internal compression to the current operating parameters is to be adapted and thus reduce energy consumption.

Merkmale der ErfindungFeatures of the invention

Die erfindungsgemäße Lösung ist bei Schraubenverdichtern mit veränderlicher Drehzahl dadurch gekennzeichnet, daß ein Schieber mit radial angeordnetem Auslaßfenster eine solche axiale Erstreckung aufweist, daß er bei allen Stellungen oder Positionen in Bezug auf die Rotoren diese mit Ausnahme des radial angeordneten Auslaßfensters überdeckt. Um dies zu erreichen, sind Mittel zur Verschiebung des Schiebers angeordnet. Die Mittel zur Verschiebung des Schiebers sind vorzugsweise ein Hydrauliksystem, Federkraft oder eigenständige anliegende Druckdifferenzen. Die Position des Schiebers wird in Abhängigkeit der Betriebsbedingungen Saugdruck, Enddruck, Arbeitsmedium und Betriebsart mit oder ohne Economizer festgelegt.The solution according to the invention is variable in screw compressors Speed characterized in that a slide with a radially arranged Outlet window has such an axial extension that it is in all positions or positions with respect to the rotors other than the radial arranged outlet window covers. To achieve this, there are means to Movement of the slide arranged. The means for moving the slide are preferably a hydraulic system, spring force or independent applied Pressure differences. The position of the slide is dependent on the Operating conditions suction pressure, final pressure, working medium and operating mode with or set without economizer.

AusführungsbeispielEmbodiment

Nach der Figur ist an Teilen des Umfanges von den Rotoren (1) der Schieber (2) angeordnet, der ein radiales Auslaßfenster (3) aufweist und die axiale Erstreckung des Schiebers (2) mit Ausnahme des radialen Auslaßfensters (3) größer ist als die radiale Erstreckung der Rotoren (1).According to the figure, the slide ( 2 ) is arranged on parts of the circumference of the rotors ( 1 ), which has a radial outlet window ( 3 ) and the axial extension of the slide ( 2 ), with the exception of the radial outlet window ( 3 ), is greater than that radial extension of the rotors ( 1 ).

Die Verschiebung des Schiebers wird durch ein Hydrauliksystem (4) Federkraft (5) oder Druckdifferenz an den Stirnseiten (6) des Schiebers erreicht.The slide is moved by a hydraulic system ( 4 ) spring force ( 5 ) or pressure difference on the end faces ( 6 ) of the slide.

Claims (3)

1. Schraubenverdichter mit Drehzahlregelung zur Leistungsregelung bestehend aus den Hauptbauteilen, Gehäuse, Rotoren, Vorrichtungen zum Zu- oder Abführen von Öl, dadurch gekennzeichnet, daß bei Schraubenverdichtern mit veränderlicher Drehzahl ein Schieber mit radial angeordnetem Auslaßfenster angeordnet ist und der Schieber, mit seiner axialen Erstreckung bei allen Stellungen oder Positionen in Bezug auf die Rotoren diese mit Ausnahme des radial angeordneten Auslaßfensters überdeckt.1. Screw compressor with speed control for power control consisting of the main components, housing, rotors, devices for supplying or discharging oil, characterized in that in the case of screw compressors with variable speed, a slide is arranged with a radially arranged outlet window and the slide, with its axial extent at all positions or positions with respect to the rotors, with the exception of the radially arranged outlet window covered. 2. Schraubenverdichter mit Drehzahlregelung nach Anspruch 1, dadurch gekennzeichnet, daß die Position des Schiebers in Abhängigkeit der Betriebsbedingungen Saugdruck, Enddruck, Arbeitsmedium und Betriebsart mit oder ohne Economiser festgelegt wird.2. Screw compressor with speed control according to claim 1, characterized in that the position of the slide depending on the Operating conditions suction pressure, final pressure, working medium and operating mode with or without an economizer. 3. Schraubenverdichter mit Drehzahlregelung nach Anspruch 1, dadurch gekennzeichnet, daß Mittel zur Verschiebung des Schiebers angeordnet sind, die vorzugsweise durch Hydrauliksystem, Federkraft oder anliegende Druckdifferenzen gegeben sind.3. screw compressor with speed control according to claim 1, characterized in that means for moving the slide are arranged, preferably by hydraulic system, spring force or applied pressure differences are given.
DE1999116983 1999-04-15 1999-04-15 Screw compressor with variable RPM governing has slide with radially disposed outlet port, and by axial extent in all positions overlaps rotors with exception of radially disposed outlet port Withdrawn DE19916983A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999116983 DE19916983A1 (en) 1999-04-15 1999-04-15 Screw compressor with variable RPM governing has slide with radially disposed outlet port, and by axial extent in all positions overlaps rotors with exception of radially disposed outlet port

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999116983 DE19916983A1 (en) 1999-04-15 1999-04-15 Screw compressor with variable RPM governing has slide with radially disposed outlet port, and by axial extent in all positions overlaps rotors with exception of radially disposed outlet port

Publications (1)

Publication Number Publication Date
DE19916983A1 true DE19916983A1 (en) 2000-10-19

Family

ID=7904632

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999116983 Withdrawn DE19916983A1 (en) 1999-04-15 1999-04-15 Screw compressor with variable RPM governing has slide with radially disposed outlet port, and by axial extent in all positions overlaps rotors with exception of radially disposed outlet port

Country Status (1)

Country Link
DE (1) DE19916983A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011121274A1 (en) 2011-02-10 2012-08-16 Gea Grasso Gmbh Device for converting energy by organic Rankine cycle, comprises organic working unit, which has working unit circuit, and arrangement for maximizing energy efficiency of organic Rankine cycle
WO2013007470A1 (en) 2011-07-11 2013-01-17 Bitzer Kühlmaschinenbau Gmbh Screw compressor
DE102013020534A1 (en) 2013-12-12 2015-06-18 Gea Refrigeration Germany Gmbh compressor
DE10326466B4 (en) * 2003-06-12 2016-03-17 Gea Refrigeration Germany Gmbh Slide with start unloading
CN106640655A (en) * 2016-12-27 2017-05-10 特灵空调系统(中国)有限公司 Method for realizing coordination control of rotation speed and self capacity regulation mechanism of fluid machine and fluid machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10326466B4 (en) * 2003-06-12 2016-03-17 Gea Refrigeration Germany Gmbh Slide with start unloading
DE102011121274A1 (en) 2011-02-10 2012-08-16 Gea Grasso Gmbh Device for converting energy by organic Rankine cycle, comprises organic working unit, which has working unit circuit, and arrangement for maximizing energy efficiency of organic Rankine cycle
WO2013007470A1 (en) 2011-07-11 2013-01-17 Bitzer Kühlmaschinenbau Gmbh Screw compressor
DE102011051730A1 (en) 2011-07-11 2013-01-17 Bitzer Kühlmaschinenbau Gmbh screw compressors
US10030653B2 (en) 2011-07-11 2018-07-24 Bitzer Kuehlmaschinenbau Gmbh Screw compressor having a volume ratio being adjusted by end faces extending along from a low-pressure side end wall to discharge edges of a slider
DE102013020534A1 (en) 2013-12-12 2015-06-18 Gea Refrigeration Germany Gmbh compressor
WO2015086159A1 (en) 2013-12-12 2015-06-18 Gea Refrigeration Germany Gmbh Compressor
CN106640655A (en) * 2016-12-27 2017-05-10 特灵空调系统(中国)有限公司 Method for realizing coordination control of rotation speed and self capacity regulation mechanism of fluid machine and fluid machine

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