EP2097615B1 - Schraubenkompressor mit integralem lagerdeckel und abführkammerteiler - Google Patents

Schraubenkompressor mit integralem lagerdeckel und abführkammerteiler Download PDF

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Publication number
EP2097615B1
EP2097615B1 EP06850018.0A EP06850018A EP2097615B1 EP 2097615 B1 EP2097615 B1 EP 2097615B1 EP 06850018 A EP06850018 A EP 06850018A EP 2097615 B1 EP2097615 B1 EP 2097615B1
Authority
EP
European Patent Office
Prior art keywords
compressor
bearing cover
discharge
chambers
divider wall
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.)
Not-in-force
Application number
EP06850018.0A
Other languages
English (en)
French (fr)
Other versions
EP2097615A1 (de
EP2097615A4 (de
Inventor
Bruce A. Fraser
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.)
Carrier Corp
Original Assignee
Carrier 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 Carrier Corp filed Critical Carrier Corp
Publication of EP2097615A1 publication Critical patent/EP2097615A1/de
Publication of EP2097615A4 publication Critical patent/EP2097615A4/de
Application granted granted Critical
Publication of EP2097615B1 publication Critical patent/EP2097615B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04C18/165—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 having more than two rotary pistons with parallel axes
    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/086—Carter
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F04C29/0035—Equalization of pressure pulses
    • 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
    • F04C29/06—Silencing
    • F04C29/065—Noise dampening volumes, e.g. muffler chambers
    • 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
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings

Definitions

  • This application relates to a screw compressor, wherein a divider separates the output of two discharge chambers, and wherein a bearing cover is formed integrally with a discharge case which provides the divider wall.
  • Screw compressors are known, and typically include a plurality of rotating rotors each having external screw thread. The screw threads interfit with screw threads on the other rotors to define compression chambers. An entrapped fluid is compressed, and delivered toward a downstream location.
  • One known type of screw compressor includes three rotors, and defines two compression chambers. These two compression chambers have typically delivered compressed fluid into a common discharge plenum. The discharge of fluid into a common chamber can be somewhat out of phase, and can result in increased pulsation and undesirable losses and noise.
  • an outlet housing includes two distinct flow passages.
  • the outlet housing is connected to a discharge case which includes a divider wall to define the two flow passages.
  • a bearing cover has typically been provided to cover bearings mounted in the outlet housing for each of the three rotors.
  • the bearing cover is formed separately from the discharge case. A space between the divider wall and bearing cover has allowed cross flow between the two passages.
  • the invention provides a compressor as defined in claim 1.
  • a screw compressor is formed with three rotors.
  • Each of the three rotors has shafts which are mounted in bearings.
  • the bearings are fixed within an outlet housing.
  • the outlet housing is fixed to a compressor case.
  • a bearing cover is formed integrally with a discharge case, as is a divider wall.
  • the outlet housing provides two separate discharge passages which communicate with two separate compression chambers.
  • the two separate discharge passages allow fluid to flow downstream into two separate plenum chambers or flow passages.
  • the separate plenum chambers are defined by the divider wall and the integral bearing cover in the discharge case. Since the bearing cover and the discharge case are formed as integral parts, there are no complex surfaces which must be sealed between the two and no leakage between the plenum chambers. In a sense, the bearing cover forms a part of the divider wall.
  • a compressor 20, as known in the prior art, is illustrated in Figure 1 .
  • a compressor case 22 carries screw rotors 24, 26 and 28.
  • the screw rotors have threads which interfit to compress and drive a refrigerant toward a discharge chamber 38.
  • Refrigerant enters at an opposed end through an inlet 140.
  • the rotors 24, 26, and 28 all have shafts 30 which are mounted within bearing assemblies 32.
  • the bearing assemblies 32 extend into chambers 34 in a outlet housing 36.
  • the outlet housing 36 includes passages 40 which communicate with the discharge chambers 38 and serve to deliver the compressed fluid downstream without allowing fluid from the two chambers 38 to cross flow.
  • a discharge case 46 includes chambers 50 which communicate with the passages 40.
  • a divider wall 48 divides the two chambers 50, such that the compressed fluid will not mix until downstream of the discharge case 46.
  • the divider wall 48 and the bearing cover 42 have generally not been on the same plane at the end of the outlet housing 36. Thus, a space has existed between the two separate parts, which has allowed leakage.
  • Figure 2 shows the prior art cover 42.
  • FIG 3 shows an inventive discharge case 100. As shown, a divider wall 102 still divides and separates the chambers 104. However, the bearing cover 106 is formed integrally with this wall 102.
  • the bearing cover 106 merges into the divider wall 102. There is no leakage between the wall 102 and the cover 106 as they are formed integrally. The two chambers 104 are thus maintained separate by the relatively simple formation of the integral component. In a sense, the bearing cover forms a portion of the wall.
  • Figure 5 is a perspective view of the opposed side, and shows the chambers 104 separated by the wall 102.
  • the divider wall 102 is relatively thin compared to the bearing cover 106.
  • the divider wall 102 also extends over the majority of the axial length of the discharge case 100. Adjacent an end of the discharge case 100 which abuts the outlet housing 20, the discharge divider wall 102 merges to be thicker, and provide the bearing cover 106.

Landscapes

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

Claims (4)

  1. Kompressor (20), umfassend:
    mindestens drei Schraubenrotoren (24, 26 und 28), wobei jeder der Schraubenrotoren eine Welle (30) aufweist, wobei der Kompressor (20) zum Fördern einer komprimierten Flüssigkeit zu jeder von mindestens zwei separaten Abführöffnungen (40) in einem Kompressorgehäuse (22) dient;
    Lager, welche in Lagergehäusen (34) aufgenommen sind und jede der drei Wellen (30) der mindestens drei Schraubenrotoren (24, 26 und 28) stützen; und
    eine Lagerdeckeloberfläche (106), welche die Lagergehäuse (34) für jedes der Lager abdeckt, ein Abführgehäuse (100), welches eine Trennwand (102) beinhaltet, zur Bereitstellung einer separaten Abführkammer (104), welche mit jeder der Abführöffnungen (40) derart in Verbindung steht, dass ein Fluid, die im Kompressor (20) komprimiert wurde, den Lagerdeckel (106) passiert und die separaten Abführkammern (104) zu einer nachgelagerten Verwendung durchströmt,
    dadurch gekennzeichnet, dass die Trennwand (102) und der Lagerdeckel (106) beide einstückig mit dem Abführgehäuse (100) gebildet sind, wobei sich die Trennwand (102) über einen relativ dünnen Bereich im Vergleich zum Lagerdeckel (106) erstreckt und größer wird, um mit dem Lagerdeckel (106) zu verschmelzen.
  2. Kompressor (20) nach Anspruch 1, wobei die Lagergehäuse (34) innerhalb eines Austrittsgehäuses (36) positioniert sind, wobei das Austrittsgehäuse (36) an das Kompressorgehäuse (22) angrenzt und das Abführgehäuse (100) am Austrittsgehäuse (36) befestigt ist.
  3. Kompressor (20) nach Anspruch 1, wobei sich die Trennwand (102) über die Mehrheit einer axialen Länge des Abführgehäuses (100) erstreckt und der Lagerdeckel (106) allgemein neben einem Ende des Abführgehäuses (100) gebildet ist.
  4. Kompressor (20) nach einem der vorhergehenden Ansprüche, wobei die Schraubenrotoren (30) zusammenpassen, um zwei Kompressionskammern zu bilden, und das komprimierte Fluid ein Kühlmittel ist.
EP06850018.0A 2006-12-26 2006-12-26 Schraubenkompressor mit integralem lagerdeckel und abführkammerteiler Not-in-force EP2097615B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/049289 WO2008079131A1 (en) 2006-12-26 2006-12-26 Screw compressor with integral bearing cover and discharge plenum divider

Publications (3)

Publication Number Publication Date
EP2097615A1 EP2097615A1 (de) 2009-09-09
EP2097615A4 EP2097615A4 (de) 2013-02-13
EP2097615B1 true EP2097615B1 (de) 2017-07-12

Family

ID=39562804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06850018.0A Not-in-force EP2097615B1 (de) 2006-12-26 2006-12-26 Schraubenkompressor mit integralem lagerdeckel und abführkammerteiler

Country Status (6)

Country Link
US (1) US20100135839A1 (de)
EP (1) EP2097615B1 (de)
CN (1) CN101778999B (de)
ES (1) ES2634143T3 (de)
HK (1) HK1146418A1 (de)
WO (1) WO2008079131A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295501B (zh) * 2014-09-19 2016-08-24 珠海格力电器股份有限公司 一种压缩机排气结构、螺杆压缩机及空调机组
US10704549B2 (en) * 2015-03-31 2020-07-07 Hitachi Industrial Equipment Systems Co., Ltd. Screw compressor having a discharging passage with enlarged cross section area
EP3096015B1 (de) * 2015-05-20 2019-12-04 Casappa S.p.A. Getriebepumpe
CN110594156B (zh) 2019-09-23 2021-05-25 兑通真空技术(上海)有限公司 一种三轴多级罗茨泵的驱动结构
CN110500275B (zh) 2019-09-23 2021-03-16 兑通真空技术(上海)有限公司 一种三轴多级罗茨泵的泵壳体结构
CN210629269U (zh) 2019-09-23 2020-05-26 兑通真空技术(上海)有限公司 一种罗茨泵的电机连接传动结构
CN110685912A (zh) 2019-10-10 2020-01-14 兑通真空技术(上海)有限公司 一种多轴多级罗茨泵转子连接的结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2381812Y (zh) * 1999-08-24 2000-06-07 杜福临 三螺杆泵
US6638042B1 (en) * 2002-05-08 2003-10-28 Carrier Corporation Asymmetric porting for multi-rotor screw compressor
US6976833B2 (en) * 2003-11-17 2005-12-20 Carrier Corporation Compressor discharge chamber with baffle plate
US7178352B2 (en) * 2004-04-08 2007-02-20 Carrier Corporation Compressor
US20060065478A1 (en) * 2004-09-30 2006-03-30 Rockwell David M Compressor sound suppression
US7121814B2 (en) * 2004-09-30 2006-10-17 Carrier Corporation Compressor sound suppression

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
HK1146418A1 (en) 2011-06-03
WO2008079131A1 (en) 2008-07-03
ES2634143T3 (es) 2017-09-26
CN101778999A (zh) 2010-07-14
EP2097615A1 (de) 2009-09-09
EP2097615A4 (de) 2013-02-13
US20100135839A1 (en) 2010-06-03
CN101778999B (zh) 2011-08-17

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