EP3080458A1 - Compressor - Google Patents

Compressor

Info

Publication number
EP3080458A1
EP3080458A1 EP14823898.3A EP14823898A EP3080458A1 EP 3080458 A1 EP3080458 A1 EP 3080458A1 EP 14823898 A EP14823898 A EP 14823898A EP 3080458 A1 EP3080458 A1 EP 3080458A1
Authority
EP
European Patent Office
Prior art keywords
compressor
volume
oil
wall
separating device
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.)
Granted
Application number
EP14823898.3A
Other languages
German (de)
French (fr)
Other versions
EP3080458B1 (en
Inventor
Dmytro Zaytsev
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
GEA Refrigeration Germany GmbH
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 GEA Refrigeration Germany GmbH filed Critical GEA Refrigeration Germany GmbH
Publication of EP3080458A1 publication Critical patent/EP3080458A1/en
Application granted granted Critical
Publication of EP3080458B1 publication Critical patent/EP3080458B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • 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
    • F04C2240/40—Electric motor

Definitions

  • the present invention relates to a screw compressor according to the preamble of patent claim 1.
  • screw compressors operating in a dry-running mode
  • screw compressors operating in an oil-flooded mode of operation
  • oil plays a role both as a lubricant and as a sealant during the compression process itself.
  • an oil separator is usually provided on a high pressure side of such screw compressors.
  • an oil separator for example, a semi-hermetic compact screw compressor from two rooms or volumes, which are separated by a demistor, also referred to as mist eliminator or aerosol, are made of metal mesh.
  • Compressed gas-oil mixture passes from a pressure pipe, which is fed by a compression device or compression unit in the form of at least one screw rotor, in the first space or the first volume in which a
  • Part of the oil separates on a boundary wall of the first volume and flows due to inertia on this wall down.
  • the disadvantage is that a part of this oil flow gets into the vicinity of the demistor and there again with the compressed medium, for example, refrigerant gas, mixed, since it depends on the gas flow
  • Patent claim 1 solved.
  • the screw compressor which has a compression device, in particular in the form of at least one screw rotor, which supplies a compressed medium to an oil separation device is designed such that:
  • the compressor has a first volume and a second volume, as well as a separating device separating the two volumes,
  • the first volume is bounded by a housing inner wall and a separating device which separates the first volume from the second volume, and
  • the separator has a demister.
  • the compressed medium which may be in particular refrigerant (with an oil fraction) passes through the demister from the first volume into the second volume.
  • an oil transfer device or Olfangvoriques is arranged, which prevents that already on the housing inner wall of the first volume
  • Fig. 1 is a view of an exemplary embodiment of a compressor according to the invention.
  • Fig. 2 is an enlarged view of a portion of Fig. L.
  • a possible embodiment of a compressor according to the invention more specifically a screw compressor 10 according to the invention, which is also referred to below as a compressor 10, shown.
  • the compressor 10 has a housing 12 and an electric motor 14 arranged in the housing 12. Furthermore, the compressor 10 has a drive shaft 16 and a compression device 18, which has a screw rotor 20 and a second screw rotor 22, which engages with the first screw rotor 20.
  • the screw rotors 20, 22 are rotationally driven via the drive shaft 16 directly (in alternative embodiments indirectly, for example via a gear arrangement).
  • a screw compressor 10 with only one screw rotor is conceivable.
  • the first screw rotor 20 is rotatably arranged about a first, arranged in the axial direction of rotation.
  • the second screw rotor 22 is rotatably arranged about a second axis of rotation which extends parallel to the first axis of rotation.
  • Both the first and the second screw rotor 20, 22 are arranged in a compression chamber 24, which is at least partially formed fluid-tight against the environment and opens into a high pressure volume 26.
  • the compressor 10 of the described embodiment operates in an oil-flooded mode in which oil contained in the compressor 10 is used both as a lubricant and (for example, in the compression process itself) as a sealant.
  • oil contained in the compressor 10 is used both as a lubricant and (for example, in the compression process itself) as a sealant.
  • the medium to be compressed for example refrigerant, oil, in particular in drop form or as an aerosol, entrains or is mixed with oil.
  • the compressed medium-oil mixture gas-oil mixture
  • the high-pressure volume 26 via a pressure pipe 28 of a ⁇ labscheidevorraum 30.
  • the compressor 10 has a first volume 32 in the form of a first chamber and a second volume 34 in the form of a second chamber, wherein the first volume 32 and the second volume 34 are separated by a separator 36 having a partition wall 38.
  • the partition wall has a first partition wall portion 38-1 in the form of a perforated plate and a second partition wall portion 38-2 connected to the first partition wall portion 38-1 and formed as a material portion without a recess. While the first partition wall portion 38-1 is disposed in an upper portion of the compressor 10 and the first volume 32, respectively, the second one is
  • Partition wall portion 38-2 disposed in a lower portion of the compressor.
  • a demister 40 is arranged on the partition wall 38.
  • the first volume 32 has an approximately cylindrical housing side wall 42, which at a first end 44 by an end wall 46 and at one of the end wall 46 opposite the second end 48 by the separator 36, in particular partition 38 is limited. From the second volume 34 from the compressed medium then passes to a compressor outlet 50, from where it is the respective desired application available.
  • an oil pre-separation takes place in the first volume 32, in which the compressed medium including the entrained oil is introduced via the pressure tube 28, an oil pre-separation takes place.
  • oil settles on a housing inner wall 52 of the first volume 32.
  • an oil drainage device or oil-collecting device 54 is arranged on the separating device 36, in particular a dividing wall 38.
  • demistor 40 Passing through the demistor 40 deposited, which for this purpose a metal mesh or
  • a metal or wire mesh ensures a sturgeon-resistant and durable construction.
  • the first volume 32 is, as mentioned above, approximately cylindrical in shape, so that the partition wall 38 with the demister 40 (ie the partition wall 38 on which the demister 40 is arranged) has approximately a circular base area.
  • the partition wall 38 with the demister 40 ie the partition wall 38 on which the demister 40 is arranged
  • has approximately a circular base area Alternatively, other configurations (rectangular, hexagonal or octagonal or with many corners provided) conceivable, but in particular for pressure vessels is often preferable in approximately circular design.
  • the Olab GmbH or Olfangvorraum 54 is channel-shaped and extends from a radially outer end of the
  • Separating device 36 in particular partition 38 inside.
  • the formed in the form of a channel Olab Norwegianvorraum or Olfangvorraum 54 has a cross-sectionally approximately L-shaped boundary 56, in particular wall, which arranged on the separator 36, in the presently described embodiment on the partition wall 38 and the housing side wall 42nd or the housing inner wall 52 is in abutment, which forms a lateral boundary of Olabzhouvorraum or Olfangvorraum 54, so that this overall has a channel shape (approximately U-shaped cross-section).
  • Olfangvoretti 54 extends over a segment-like portion, more precisely a niksegmeritartigen section of the partition wall 38. Where the Olab 2010vorraum or Olfangvortechnik 54 is not formed, the accumulating therein oil can drain into an oil sump located in the compressor. That is, the Olab 2010vortechnisch or Olfangvortechnik 54 is not formed on a down in operation of the compressor 10 side in a (circular) sector of 20 ° to 90 °, preferably from 60 ° to 80 ° inclusive and is omitted. This means in other words that the
  • Olab Woodvortechnische or Olfangvortechnisch 54 has a sector angle of 270 ° to 340 °, preferably 280 ° to 300 °. In the specific embodiment described, the sector angle is 290 °.
  • Embodiment completely arranged in the first volume 32.
  • Olab Woodvortechnische or Olfangvortechnisch 54 has an oil outlet or oil outlet or a ⁇ lauslassö réelle 55 which is arranged in the first volume 32, in particular thus opens there. So that is the Olab Concretevortechnisch or
  • Olfangvortechnisch 54 captured or discharged oil in the first volume 32 in or discharged.
  • FIG. 1 and FIG. 2 ensures an effective construction, in which an optimal oil removal is ensured.
  • an oil removal device or oil catching device 54 oil catch collar
  • the oil-collecting collar together with the inside of the housing wall of the first volume 32, forms an oil discharge channel, whereby the oil flowing along the wall is caught in front of the demister 40 and directed down to the oil sump.

Abstract

The invention relates to a screw compressor (10) comprising a compressor device (18), in particular at least one screw rotor (20, 22), which guides a compressed medium to an oil separating device (30). Said compressor (10) has a first volume (32) and a second volume (34), in addition to a separating device (36) separating the first and the second volumes (32, 34) from each other. The first volume (32) is defined by a housing inner wall (52) and the separating device (36) which separates the first volume (32) from the second volume (34). Said separating device (36) comprises a demistor (40) and an oil discharging device (54) is arranged on the separating device (36).

Description

Verdichter  compressor
Die vorliegende Erfindung betrifft einen Schraubenverdichter gemäß dem Oberbegriff des Patentanspruchs 1. The present invention relates to a screw compressor according to the preamble of patent claim 1.
Es gibt sowohl Schraubenverdichter , die in einer Trockenlauf-Betriebsweise arbeiten, als auch Schraubenverdichter, die in einer ölüberfluteten Betriebsweise arbeiten. Bei den zuletzt genannten Schraubenverdichtern spielt Öl sowohl als Schmiermittel eine Rolle, als auch beim Verdichtungsvorgang selbst als Dichtmittel. Um jedoch keinen unerwünschten Öleintrag in eine Kälteanlage zu erhalten, die von dem Verdichter mit verdichtetem Kältemittel versorgt wird, ist in der Regel ein Ölabscheider auf einer Hochdruckseite solcher Schraubenverdichter vorgesehen. There are both screw compressors operating in a dry-running mode and screw compressors operating in an oil-flooded mode of operation. In the case of the last-mentioned screw compressors, oil plays a role both as a lubricant and as a sealant during the compression process itself. However, in order to prevent unwanted oil entry into a refrigeration system that is supplied with compressed refrigerant by the compressor, an oil separator is usually provided on a high pressure side of such screw compressors.
Nach dem Stand der Technik besteht ein Ölabscheider beispielsweise eines semihermetischen Kompaktschraubenverdichters aus zwei Räumen bzw. Volumina, die durch einen Demistor, auch als Tropfenabscheider oder Aerosolabscheider bezeichnet, aus Metallgestrick getrennt sind. Komprimiertes Gas-Ölgemisch gelangt aus einem Druckrohr, das von einer Verdichtungsvorrichtung bzw. Verdichtungseinheit in Form wenigstens eines Schraubenläufers gespeist wird, in den ersten Raum bzw. das erste Volumen, in dem eine In the prior art, an oil separator, for example, a semi-hermetic compact screw compressor from two rooms or volumes, which are separated by a demistor, also referred to as mist eliminator or aerosol, are made of metal mesh. Compressed gas-oil mixture passes from a pressure pipe, which is fed by a compression device or compression unit in the form of at least one screw rotor, in the first space or the first volume in which a
1 1
BESTÄTIGlMQ3 OPf£ Öl-Vorabscheidung stattfindet, bevor es durch den Demistor hindurchtritt. BESTÄTIGlMQ3 OPf Oil pre-separation takes place before it passes through the demistor.
Ein Teil des Öls scheidet sich an einer Begrenzungswand des ersten Volumens ab und strömt trägheitsbedingt an dieser Wand nach unten. Nachteilig ist es, dass ein Teil dieses Ölstroms in die Nähe des Demistors gelangt und sich dort wieder mit dem verdichteten Medium, beispielsweise Kältemittel-Gas, vermischt, da es von der Gasströmung Part of the oil separates on a boundary wall of the first volume and flows due to inertia on this wall down. The disadvantage is that a part of this oil flow gets into the vicinity of the demistor and there again with the compressed medium, for example, refrigerant gas, mixed, since it depends on the gas flow
entsprechend mitgerissen wird. is entrained accordingly.
Ausgehend hiervon ist es die Aufgabe der vorliegenden Erfindung, einen Based on this, it is the object of the present invention, a
Schraubenverdichter anzugeben, der eine möglichst effiziente Ölabscheidung aufweist. Specify screw compressor, which has the most efficient oil separation.
Diese Aufgabe wird durch einen Schraubenverdichter mit den Merkmalen des This object is achieved by a screw compressor with the features of
Patentanspruchs 1 gelöst. Patent claim 1 solved.
Der Schraubenverdichter, der eine Verdichtungsvorrichtung, insbesondere in Form wenigstens eines Schraubenläufers aufweist, die einer Ölabscheidevorrichtung ein verdichtetes Medium zuführt ist derart ausgebildet, dass: The screw compressor which has a compression device, in particular in the form of at least one screw rotor, which supplies a compressed medium to an oil separation device is designed such that:
- der Verdichter ein erstes Volumen und ein zweites Volumen, sowie eine die beiden Volumina trennende Trennvorrichtung aufweist,  the compressor has a first volume and a second volume, as well as a separating device separating the two volumes,
- das erste Volumen durch eine Gehäuseinnenwand und eine Trennvorrichtung, welche das erste Volumen von dem zweiten Volumen trennt, begrenzt ist, und  the first volume is bounded by a housing inner wall and a separating device which separates the first volume from the second volume, and
- die Trennvorrichtung einen Demistor aufweist.  - The separator has a demister.
Das verdichtete Medium, das insbesondere Kältemittel (mit einem Ölanteil) sein kann, gelangt dabei durch den Demistor von dem ersten Volumen in das zweite Volumen. An der Trennvorrichtung ist eine Olabführvorrichtung bzw. Olfangvorrichtung angeordnet, die es verhindert, dass bereits an der Gehäuseinnenwand des ersten Volumens  The compressed medium, which may be in particular refrigerant (with an oil fraction), passes through the demister from the first volume into the second volume. At the separating device, an oil transfer device or Olfangvorrichtung is arranged, which prevents that already on the housing inner wall of the first volume
abgeschiedenes Öl durch das strömende verdichtete Medium wieder mitgerissen und somit wieder mit demselben vermischt wird. separated oil is entrained again by the flowing compressed medium and thus mixed again with the same.
Weitere optionale Merkmale der Erfindung sind in den Unteransprüchen, sowie der folgenden Figurenbeschreibung angegeben. Die beschriebenen jeweiligen Merkmale können einzeln oder in beliebigen Kombinationen realisiert sein. Die Erfindung wird demnach im Folgenden mit Bezug auf die beiliegenden Zeichnungen anhand von beispielhaften Ausführungsformen beschrieben. In den Zeichnungen zeigen: Fig. 1 eine Ansicht einer beispielhaften Ausführungsform eines erfindungsgemäßen Verdichters; und Further optional features of the invention are specified in the dependent claims, as well as the following description of the figures. The described respective features can be realized individually or in any combination. The invention will therefore be described below with reference to the accompanying drawings by means of exemplary embodiments. In the drawings show: Fig. 1 is a view of an exemplary embodiment of a compressor according to the invention; and
Fig. 2 eine vergrößerte Darstellung eines Teilabschnitts der Fig. l. Fig. 2 is an enlarged view of a portion of Fig. L.
In Fig. 1 ist eine mögliche Ausführungsform eines erfindungsgemäßen Verdichters, genauer eines erfindungsgemäßen Schraubenverdichters 10, der nachstehend auch kurz als Verdichter 10 bezeichnet wird, dargestellt. Der Verdichter 10 weist ein Gehäuse 12 und einen in dem Gehäuse 12 angeordneten Elektromotor 14 auf. Ferner weist der Verdichter 10 eine Antriebswelle 16 und eine Verdichtungsvorrichtung 18, die einen Schraubenläufer 20 und einen zweiten Schraubenläufer 22, der mit dem ersten Schraubenläufer 20 in Eingriff steht, aufweist. Die Schraubenläufer 20, 22 werden über die Antriebswelle 16 direkt (in alternativen Ausführungsformen indirekt, beispielsweise über eine Getriebeanordnung) dreh-angetrieben. Alternativ ist auch ein Schraubenverdichter 10 mit nur einem Schraubenläufer denkbar. In Fig. 1, a possible embodiment of a compressor according to the invention, more specifically a screw compressor 10 according to the invention, which is also referred to below as a compressor 10, shown. The compressor 10 has a housing 12 and an electric motor 14 arranged in the housing 12. Furthermore, the compressor 10 has a drive shaft 16 and a compression device 18, which has a screw rotor 20 and a second screw rotor 22, which engages with the first screw rotor 20. The screw rotors 20, 22 are rotationally driven via the drive shaft 16 directly (in alternative embodiments indirectly, for example via a gear arrangement). Alternatively, a screw compressor 10 with only one screw rotor is conceivable.
Der erste Schraubenläufer 20 ist um eine erste, in axialer Richtung angeordnete Drehachse drehbar angeordnet. Der zweite Schraubenläufer 22 ist um eine zweite Drehachse, welche sich parallel zu der ersten Drehachse erstreckt, drehbar angeordnet. Sowohl der erste als auch der zweite Schraubenläufer 20, 22 sind in einem Verdichtungsraum 24 angeordnet, der gegen die Umgebung hin wenigstens abschnittweise fluiddicht ausgebildet ist und in ein Hochdruckvolumen 26 mündet. The first screw rotor 20 is rotatably arranged about a first, arranged in the axial direction of rotation. The second screw rotor 22 is rotatably arranged about a second axis of rotation which extends parallel to the first axis of rotation. Both the first and the second screw rotor 20, 22 are arranged in a compression chamber 24, which is at least partially formed fluid-tight against the environment and opens into a high pressure volume 26.
Der Verdichter 10 der beschriebenen Ausführungsform arbeitet in einer ölüberfluteten Betriebsweise, in welcher im Verdichter 10 befindliches Öl sowohl als Schmiermittel, als auch (beispielsweise beim Verdichtungsvorgang selbst) als Dichtmittel verwendet wird. Dies heißt, dass das zu verdichtende Medium, beispielsweise Kältemittel, Öl, insbesondere in Tropfenform oder als Aerosol, mitführt bzw. mit Öl vermischt ist. Nach dem durch die Verdichtungsvorrichtung 18 bewirkten Verdichtungsvorgang wird das verdichtete Medium -Öl-Gemisch (Gas-Öl-Gemisch) dann über das Hochdruckvolumen 26 über ein Druckrohr 28 einer Ölabscheidevorrichtung 30 zugeführt. The compressor 10 of the described embodiment operates in an oil-flooded mode in which oil contained in the compressor 10 is used both as a lubricant and (for example, in the compression process itself) as a sealant. This means that the medium to be compressed, for example refrigerant, oil, in particular in drop form or as an aerosol, entrains or is mixed with oil. After the compression process caused by the compression device 18, the compressed medium-oil mixture (gas-oil mixture) is then supplied via the high-pressure volume 26 via a pressure pipe 28 of a Ölabscheidevorrichtung 30.
Der Verdichter 10 weist hierzu ein erstes Volumen 32 in Form einer ersten Kammer und ein zweites Volumen 34 in Form einer zweiten Kammer auf, wobei das erste Volumen 32 und das zweite Volumen 34 durch eine Trennvorrichtung 36, die eine Trennwand 38 aufweist, getrennt sind. Die Trennwand weist einen ersten Trennwandabschnitt 38-1 in Form eines Lochblechs und einen zweiten Trennwandabschnitt 38-2, der mit dem ersten Trennwandabschnitt 38-1 verbunden und als Materialabschnitt ohne Aussparung ausgebildet ist, auf. Während der erste Trennwandabschnitt 38-1 in einem oberen Bereich des Verdichters 10 bzw. dem ersten Volumen 32 angeordnet ist, ist der zweite For this purpose, the compressor 10 has a first volume 32 in the form of a first chamber and a second volume 34 in the form of a second chamber, wherein the first volume 32 and the second volume 34 are separated by a separator 36 having a partition wall 38. The partition wall has a first partition wall portion 38-1 in the form of a perforated plate and a second partition wall portion 38-2 connected to the first partition wall portion 38-1 and formed as a material portion without a recess. While the first partition wall portion 38-1 is disposed in an upper portion of the compressor 10 and the first volume 32, respectively, the second one is
Trennwandabschnitt 38-2 in einem unteren Bereich des Verdichters angeordnet. In bzw. an der Trennwand 38 ist ein Demistor 40 angeordnet. Das erste Volumen 32 weist eine in etwa zylinderförmige Gehäuseseitenwand 42 auf, die an einem ersten Ende 44 durch eine Stirnwand 46 und an einem der Stirnwand 46 gegenüberliegenden zweiten Ende 48 durch die Trennvorrichtung 36, insbesondere Trennwand 38, begrenzt ist. Vom zweiten Volumen 34 aus gelangt das verdichtete Medium dann zu einem Verdichterausgang 50, von wo aus es der jeweiligen gewünschten Anwendung zur Verfügung steht. Partition wall portion 38-2 disposed in a lower portion of the compressor. In or on the partition wall 38, a demister 40 is arranged. The first volume 32 has an approximately cylindrical housing side wall 42, which at a first end 44 by an end wall 46 and at one of the end wall 46 opposite the second end 48 by the separator 36, in particular partition 38 is limited. From the second volume 34 from the compressed medium then passes to a compressor outlet 50, from where it is the respective desired application available.
In dem ersten Volumen 32, in das das verdichtete Medium samt dem mitgeführten Öl über das Druckrohr 28 eingebracht wird, erfolgt eine Öl-Vorabscheidung. Dabei schlägt sich Öl an einer Gehäuseinnenwand 52 des ersten Volumens 32 nieder. Um zu verhindern, dass Öl, das bereits an der Gehäuseinnenwand 52 abgeschieden wurde, wieder von dem strömenden verdichteten Medium mitgerissen wird, ist an der Trennvorrichtung 36, insbesondere Trennwand 38, eine Ölabführvorrichtung bzw. Ölablaufvorrichtung bzw. Ölfangvorrichtung 54 angeordnet. In the first volume 32, in which the compressed medium including the entrained oil is introduced via the pressure tube 28, an oil pre-separation takes place. In this case, oil settles on a housing inner wall 52 of the first volume 32. In order to prevent oil which has already been deposited on the housing inner wall 52 from being entrained again by the flowing compressed medium, an oil drainage device or oil-collecting device 54 is arranged on the separating device 36, in particular a dividing wall 38.
Weiteres mit dem strömenden verdichteten Medium vermischtes Öl wird dann beim Further oil mixed with the flowing compressed medium is then added to the
Durchtreten des Demistors 40 abgeschieden, welcher hierfür ein Metallgestrick bzw. Passing through the demistor 40 deposited, which for this purpose a metal mesh or
Metallgeflecht, das in dem durchströmten Gebiet angeordnet ist, aufweist. Es sei an dieser Stelle angemerkt, dass anstelle eines Metall- oder Drahtgestricks auch Metal braid, which is arranged in the area through which flows. It should be noted at this point that instead of a metal or Drahtgestricks too
beispielsweise eine Lamellenkonstruktion denkbar wäre. Ein Metall- oder Drahtgestrick stellt jedoch eine stör-unanfällige und langlebige Konstruktion sicher. For example, a slat construction would be conceivable. A metal or wire mesh, however, ensures a sturgeon-resistant and durable construction.
Das erste Volumen 32 ist, wie vorstehend erwähnt, in etwa zylinderförmig ausgebildet, so dass die Trennwand 38 mit dem Demistor 40 (d.h. die Trennwand 38, an welcher der Demistor 40 angeordnet ist) in etwa eine kreisförmige Grundfläche hat. Alternativ sind auch andere Ausgestaltungen (rechteckig, sechs- oder achteckig oder mit vielen Ecken versehen) denkbar, insbesondere für Druckbehälter ist aber die in etwa kreisförmige Ausgestaltung oftmals zu bevorzugen. Die Olabführvorrichtung bzw. Olfangvorrichtung 54 ist kanalförmig ausgebildet und erstreckt sich von einem radial äußeren Ende der The first volume 32 is, as mentioned above, approximately cylindrical in shape, so that the partition wall 38 with the demister 40 (ie the partition wall 38 on which the demister 40 is arranged) has approximately a circular base area. Alternatively, other configurations (rectangular, hexagonal or octagonal or with many corners provided) conceivable, but in particular for pressure vessels is often preferable in approximately circular design. The Olabführvorrichtung or Olfangvorrichtung 54 is channel-shaped and extends from a radially outer end of the
Trennvorrichtung 36, insbesondere Trennwand 38 nach innen. Separating device 36, in particular partition 38 inside.
Die in Form eines Kanals ausgebildete Olabführvorrichtung bzw. Olfangvorrichtung 54 weist eine im Querschnitt in etwa L-förmig ausgebildete Begrenzung 56, insbesondere Wandung, auf, welche an der Trennvorrichtung 36, in der vorliegend beschriebenen Ausführungsform an der Trennwand 38 angeordnet und mit der Gehäuseseitenwand 42 bzw. der Gehäuseinnenwand 52 in Anlage ist, welche eine seitliche Begrenzung der Olabführvorrichtung bzw. Olfangvorrichtung 54 bildet, sodass diese insgesamt eine Kanalform (in etwa U-förmigen Querschnitt aufweist). Die Olabführvorrichtung bzw. The formed in the form of a channel Olabführvorrichtung or Olfangvorrichtung 54 has a cross-sectionally approximately L-shaped boundary 56, in particular wall, which arranged on the separator 36, in the presently described embodiment on the partition wall 38 and the housing side wall 42nd or the housing inner wall 52 is in abutment, which forms a lateral boundary of Olabführvorrichtung or Olfangvorrichtung 54, so that this overall has a channel shape (approximately U-shaped cross-section). The Olabführvorrichtung or
Olfangvorrichtung 54 erstreckt sich über einen segmentartigen Abschnitt, genauer einen kreissegmeritartigen Abschnitt der Trennwand 38. Dort wo die Olabführvorrichtung bzw. Olfangvorrichtung 54 nicht ausgebildet ist, kann das sich darin sammelnde Öl in einen im Verdichter befindlichen Ölsumpf ablaufen. Das heißt, dass die Olabführvorrichtung bzw. Olfangvorrichtung 54 an einer im Betrieb des Verdichters 10 unten befindlichen Seite in einem (Kreis-)Sektor von 20° bis 90°, vorzugsweise von 60° bis einschließlich 80° nicht ausgebildet ist bzw. ausgespart ist. Dies heißt in anderen Worten gesagt, dass die Olfangvorrichtung 54 extends over a segment-like portion, more precisely a kreissegmeritartigen section of the partition wall 38. Where the Olabführvorrichtung or Olfangvorrichtung 54 is not formed, the accumulating therein oil can drain into an oil sump located in the compressor. That is, the Olabführvorrichtung or Olfangvorrichtung 54 is not formed on a down in operation of the compressor 10 side in a (circular) sector of 20 ° to 90 °, preferably from 60 ° to 80 ° inclusive and is omitted. This means in other words that the
Olabführvorrichtung bzw. Olfangvorrichtung 54 einen Sektorwinkel von 270° bis 340°, vorzugsweise 280° bis 300° aufweist. In der konkret beschriebenen Ausführungsform beträgt der Sektorwinkel 290°. Olabführvorrichtung or Olfangvorrichtung 54 has a sector angle of 270 ° to 340 °, preferably 280 ° to 300 °. In the specific embodiment described, the sector angle is 290 °.
Die Olabführvorrichtung bzw. Olfangvorrichtung 54 ist in der beschriebenen The Olabführvorrichtung or Olfangvorrichtung 54 is described in the
Ausführungsform vollständig in dem ersten Volumen 32 angeordnet. Die Embodiment completely arranged in the first volume 32. The
Olabführvorrichtung bzw. Olfangvorrichtung 54 weist einen Ölauslass bzw. Olaustritt bzw. eine Ölauslassöffnung 55 auf, der bzw. die in dem ersten Volumen 32 angeordnet ist, insbesondere somit dort mündet. So wird das durch die Olabführvorrichtung bzw. Olabführvorrichtung or Olfangvorrichtung 54 has an oil outlet or oil outlet or a Ölauslassöffnung 55 which is arranged in the first volume 32, in particular thus opens there. So that is the Olabführvorrichtung or
Olfangvorrichtung 54 eingefangene bzw. abgeführte Öl in das erste Volumen 32 hinein abgeleitet bzw. abgeführt. Olfangvorrichtung 54 captured or discharged oil in the first volume 32 in or discharged.
Es sei an dieser Stelle angemerkt, dass die Olabführvorrichtung bzw. Olfangvorrichtung 54 in alternativen Ausführungsformen auch an bzw. in der Trennwand 38 und/oder dem Demistor 40, beispielsweise als Vertiefung oder auch in Form einer Stelle reduzierter Materialansammlung, beispielsweise Nut ausgebildet sein kann. Die vorstehend It should be noted at this point that the Olabführvorrichtung or Olfangvorrichtung 54 reduced in alternative embodiments also on or in the partition wall 38 and / or the demister 40, for example as a recess or in the form of a body Material accumulation, such as groove may be formed. The above
beschriebene Ausführungsform gemäß Fig. 1 und Fig. 2 jedoch stellt eine wirkungsvolle Konstruktion sicher, bei der eine optimale Ölabfuhr sichergestellt ist.  However, described embodiment of FIG. 1 and FIG. 2 ensures an effective construction, in which an optimal oil removal is ensured.
Es bleibt zu erwähnen, dass sich das Druckrohr 28 zum Zuführen des verdichteten It should be noted that the pressure tube 28 for supplying the compressed
Mediums, das sich in das erste Volumen 32 hineinerstreckt, in diesem eine 90°-Biegung aufweist und an seinem Auslass 58 zu der der Trennvorrichtung 36 abgewandten Seite hin abgeschrägt ist, so dass ein möglichst großer Innenwandbereich des ersten Volumens 32 angeströmt wird. Dies erleichtert die Öl-Vorabscheidung.  Medium which hineinerstreckt into the first volume 32, in this a 90 ° bend and is chamfered at its outlet 58 to the separator 36 side facing away, so that the largest possible inner wall area of the first volume 32 is flown. This facilitates the oil pre-separation.
Zusammenfassend lässt sich festhalten, dass, um ein Wiedermischen von bereits abgeschiedenem Öl mit dem Gas am Demistor 40 zu vermeiden, erfindungsgemäß eine Ölabführvorrichtung bzw. Ölfangvorrichtung 54 (Ölfangkragen) vorgesehen ist. Der Ölfangkragen bildet zusammen mit der Innenseite der Gehäusewand des ersten Volumens 32 einen Ölablaufkanal, wodurch das entlang der Wand strömende Öl vor dem Demistor 40 abgefangen und nach unten zum Ölsumpf geleitet wird. In summary, it can be stated that in order to avoid remixing of already separated oil with the gas at the demister 40, according to the invention an oil removal device or oil catching device 54 (oil catch collar) is provided. The oil-collecting collar, together with the inside of the housing wall of the first volume 32, forms an oil discharge channel, whereby the oil flowing along the wall is caught in front of the demister 40 and directed down to the oil sump.
Obwohl die Erfindung anhand von Ausführungsformen mit festen Merkmalskombinationen beschrieben wird, umfasst sie jedoch auch die denkbaren weiteren vorteilhaften However, while the invention will be described in terms of embodiments having fixed feature combinations, it also encompasses the other conceivable advantageous ones
Kombinationen, wie sie insbesondere, aber nicht erschöpfend, durch die Unteransprüche angegeben sind. Sämtliche in den Anmeldungsunterlagen offenbarten Merkmale werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind. Combinations as specified in particular, but not exhaustive, by the subclaims. All disclosed in the application documents features are claimed as essential to the invention, as far as they are new individually or in combination over the prior art.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
10 Verdichter 10 compressors
12 Gehäuse  12 housing
14 Elektromotor  14 electric motor
16 Antriebswelle  16 drive shaft
18 Verdichtungsvorrichtung  18 compacting device
20 erster Schraubenläufer  20 first screw rotor
22 zweiter Schraubenläufer Verdichtungsraum 22 second screw rotor compression chamber
Hochdruckvolumen  High volume printing
Druckrohr  pressure pipe
Ölabscheidevorrichtung  Oil separation
erstes Volumen  first volume
zweites Volumen  second volume
Trennvorrichtung  separating device
Trennwand partition wall
-1 erster Trennwandabschnitt-1 first partition section
-2 zweiter Trennwandabschnitt -2 second partition wall section
Demistor  demister
Gehäuseseitenwand  Housing sidewall
erstes Ende der Gehäuseseitenwand 42  first end of the housing side wall 42
Stirnwand  bulkhead
zweites Ende der Gehäuseseitenwand 42 Verdichterausgang  second end of the housing sidewall 42 compressor outlet
Gehäuseinnenwand  Housing inner wall
Olabführvorrichtung bzw. Olfangvorrichtung Ölauslass bzw. Ölaustritt bzw. Olauslassöffnung Begrenzung bzw. Wandung  Olabführvorrichtung or Olfangvorrichtung oil outlet or oil outlet or Olauslassöffnung boundary or wall
Auslass des Druckrohrs 28  Outlet of the pressure tube 28

Claims

Patentansprüche claims
Schraubenverdichter (10) mit einer Verdichtungsvorrichtung (18), insbesondere wenigstens einem Schraubenläufer (20, 22), die einer Ölabscheidevorrichtung (30) ein verdichtetes Medium zuführt, wobei Screw compressor (10) with a compression device (18), in particular at least one screw rotor (20, 22), which supplies a compressed medium to an oil separation device (30), wherein
der Verdichter (10) ein erstes Volumen (32) und ein zweites Volumen (34), sowie eine das erste und das zweite Volumen (32, 34) voneinander trennende Trennvorrichtung (36) aufweist,  the compressor (10) has a first volume (32) and a second volume (34), and a separating device (36) separating the first volume and the second volume (32, 34),
wobei das erste Volumen (32) durch eine Gehäuseinnenwand (52) und die Trennvorrichtung (36), welche das erste Volumen (32) von dem zweiten Volumen (34) trennt, begrenzt ist, wobei die Trennvorrichtung (36) einen Demistor (40) aufweist,  wherein the first volume (32) is bounded by a housing inner wall (52) and the separation device (36) separating the first volume (32) from the second volume (34), the separation device (36) comprising a demister (40). having,
dadurch gekennzeichnet, dass characterized in that
an der Trennvorrichtung (36) eine Ölabführvorrichtung (54) angeordnet ist. an oil removal device (54) is arranged on the separating device (36).
Verdichter (10) nach Anspruch 1, Compressor (10) according to claim 1,
dadurch gekennzeichnet, dass characterized in that
die Ölabführvorrichtung (54) in Form eines Kanals ausgebildet ist. the Ölabführvorrichtung (54) is formed in the form of a channel.
Verdichter (10) nach einem der vorangehenden Ansprüche, Compressor (10) according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
das erste Volumen (32) eine in etwa zylinderförmige Gehäuseseitenwand (42) aufweist, die an einem ersten Ende (44) durch eine Stirnwand (46) und an einem der Stirnwand (46) gegenüberliegenden zweiten Ende (48) durch die Trennvorrichtung (36) begrenzt ist, und dadurch dass die Ölabführvorrichtung (54) sich von einem radial äußeren Ende der the first volume (32) has an approximately cylindrical housing side wall (42) at a first end (44) through an end wall (46) and at a second end (48) opposite the end wall (46) by the separating device (36) is limited, and in that the Ölabführvorrichtung (54) extending from a radially outer end of the
Trennvorrichtung (36) nach innen erstreckend angeordnet ist. Separator (36) is arranged extending inwardly.
4. Verdichter (10) nach einem der vorangehenden Ansprüche, 4. compressor (10) according to any one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Olabführvorrichtung (54) eine im Querschnitt in etwa L-förmig ausgebildete Begrenzung (56), insbesondere Wandung, aufweist.  the Olabführvorrichtung (54) has a cross section in approximately L-shaped boundary (56), in particular wall, has.
5. Verdichter (10) nach Anspruch 4, 5. compressor (10) according to claim 4,
dadurch gekennzeichnet, dass  characterized in that
die Begrenzung (56) an der Trennvorrichtung (36) angeordnet und mit der  the boundary (56) on the separating device (36) and arranged with the
Gehäuseseitenwand (42) in Anlage ist.  Housing side wall (42) is in Appendix.
6. Verdichter (10) nach einem der vorangehenden Ansprüche, 6. compressor (10) according to any one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Olabführvorrichtung (54) sich über einen segmentartigen Abschnitt, insbesondere einen kreissegmentartigen oder kreissektorartigen Abschnitt der Trennvorrichtung (36) erstreckt.  the Olabführvorrichtung (54) extends over a segment-like portion, in particular a circular segment-like or circular sector-like portion of the separating device (36).
7. Verdichter (10) nach Anspruch 6, 7. compressor (10) according to claim 6,
dadurch gekennzeichnet, dass  characterized in that
die Olabführvorrichtung (54) sich sich über ein Segment oder einen Winkelbereich der Trennvorrichtung (36) von 270° bis 340°, insbesondere von 280° bis 300°, weiterhin insbesondere von 290° erstreckt.  the oil removal device (54) extends over a segment or an angular range of the separating device (36) from 270 ° to 340 °, in particular from 280 ° to 300 °, furthermore in particular from 290 °.
8. Verdichter (10) nach einem der vorangehenden Ansprüche , 8. compressor (10) according to any one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
sich ein Druckrohr (28) zum Zuführen des verdichteten Mediums in das erste Volumen (32) hineinerstreckt, und in diesem eine 90°-Biegung aufweist.  a pressure tube (28) for feeding the compressed medium extends into the first volume (32) and has a 90 ° bend therein.
9. Verdichter (10) nach Anspruch 8, 9. compressor (10) according to claim 8,
dadurch gekennzeichnet, dass  characterized in that
das Druckrohr (28) zu einer der Trennvorrichtung (36) hin abgewandten Seite angeschrägt ist.  the pressure tube (28) is chamfered to a side facing away from the separating device (36).
10. Verdichter (10) nach einem der vorangehenden Ansprüche, 10. compressor (10) according to any one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
der Demistor (40) ein Metallgestrick aufweist. Verdichter (10) nach einem der vorangehenden Ansprüche, the demister (40) has a metal mesh. Compressor (10) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Olabführvorrichtung (54) einen Olauslass (55) aufweist, der in dem ersten Volumen (32) angeordnet ist.  the oil transfer device (54) has an oil outlet (55) disposed in the first volume (32).
12. Verdichter (10) nach einem der vorangehenden Ansprüche, 12. compressor (10) according to any one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Olabführvorrichtung (54) vollständig in dem ersten Volumen (32) angeordnet ist.  the oil transfer device (54) is arranged completely in the first volume (32).
EP14823898.3A 2013-12-12 2014-12-12 Compressor Active EP3080458B1 (en)

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DE102013020533.6A DE102013020533A1 (en) 2013-12-12 2013-12-12 compressor
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WO2020123273A1 (en) 2018-12-10 2020-06-18 Carrier Corporation Modular compressor discharge system

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DE102013020533A1 (en) 2015-07-02
US10451066B2 (en) 2019-10-22
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WO2015086160A1 (en) 2015-06-18
CN105793573B (en) 2020-01-03
US20160312778A1 (en) 2016-10-27

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