EP0277582B1 - Einheit für Kompressoren bestehend aus thermostatischem Ventil und Ölfilter - Google Patents

Einheit für Kompressoren bestehend aus thermostatischem Ventil und Ölfilter Download PDF

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Publication number
EP0277582B1
EP0277582B1 EP88101074A EP88101074A EP0277582B1 EP 0277582 B1 EP0277582 B1 EP 0277582B1 EP 88101074 A EP88101074 A EP 88101074A EP 88101074 A EP88101074 A EP 88101074A EP 0277582 B1 EP0277582 B1 EP 0277582B1
Authority
EP
European Patent Office
Prior art keywords
oil
valve
casing
oil filter
thermostatic
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
EP88101074A
Other languages
English (en)
French (fr)
Other versions
EP0277582A3 (en
EP0277582A2 (de
Inventor
Adolfo Boldrini
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.)
Ing Enea Mattei SpA
Original Assignee
Ing Enea Mattei SpA
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 Ing Enea Mattei SpA filed Critical Ing Enea Mattei SpA
Priority to AT88101074T priority Critical patent/ATE62324T1/de
Publication of EP0277582A2 publication Critical patent/EP0277582A2/de
Publication of EP0277582A3 publication Critical patent/EP0277582A3/en
Application granted granted Critical
Publication of EP0277582B1 publication Critical patent/EP0277582B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • 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

Definitions

  • This invention refers to a device for the circulation of the oil for lubrication and for cooling the oil in compressors of the rotary type described in DE-A-2500046 and US-A-4537346 and, in particular, is directed to a special arrangement of a thermostatic valve and recycling filter for the lubrication and cooling oil to considerably simplify the construction of the compressor and improve lubrication in operating conditions of particularly low temperatures; besides this, it allows easy inspection and/or substitution of both the filter and the thermostatic valve.
  • the thermostatic valve comprises a hollow cylindrical body sealingly housed inside the above-mentioned casing, and a closing cylindrical member operated by a thermostatic control element; the cylindrical member slides between two extreme operative positions in which it opens or closes some exit ports for the oil towards a passage for the direct recycling of the oil from the compressor oil chamber to the stator chamber, and respectively for connecting a cooling circuit towards the above mentioned recycling filter.
  • the oil filter and the thermostatic valve are made accessible by removing a closure cover of said cylindrical casing so as to be easily removable for maintenance or substitution.
  • a rotary air compressor of the type with radial blades comprises an external cylindrical body defining an annular chamber 11, only partially shown, in which a suitable quantity of oil necessary for the operation of the compressor is contained, and an internal cylindrical body 12, also referred to as stator, which defines a chamber 13 in which, as per se known, a blade rotor rotates (not shown).
  • stator also referred to as stator
  • stator which defines a chamber 13 in which, as per se known, a blade rotor rotates (not shown).
  • the whole compressor, with all its relative automatic control devices, is not shown completely here, with the exception of the oil circulation device, since it does not constitute an innovative part of the present invention and is realizable in any of several ways.
  • a cylindrical casing 14 In a position underneath the body 10 of the compressor and placed in direct contact with the lower part of the oil chamber 11 is a cylindrical casing 14 in which a thermostatic valve 15 and a filter 16 are housed or coaxially arranged in alignment with each other.
  • the thermostatic valve 15 comprises a hollow cylindrical body 17 in the form of a cup-shaped element, the closed bottom 17a of which is facing towards the filter 16.
  • the inside of the hollow body 17 is in communication with the oil chamber 11 of the compressor by means of a lateral inlet hole 18 aligned with a hole 19 which opens towards the bottom of the oil chamber 11.
  • a first set of exit ports 20 which ports communicate, through longitudinal passages or channels 21 with the space 22 in which the filtering cartridge 23 is housed, said space 22 for the filter being a continuation of the space in which the valve 15 is housed.
  • the inside 24 of the filter cartridge in its turn communicates on one side with a conduit 25 which RECYCLES the oil directly or through suitable distributors (not shown) inside the chamber 13 of the stator.
  • valve body 17 terminates in correspondence with a second exit port 26 in the casing 14 which is connected to an inlet port 27 of the filter space 22 by means of a branched off circuit for cooling the oil, comprising a heat exchanger 28.
  • an axially hollow cylinder or closing member 29 which sealingly slides between a first end position, shown in Fig. 1, against an annular edge 30 of a closure cover 31, in which position the closing member completely closes the oil passage towards the second exit port 26, and a second operative position opposite the preceding one, in which the closing member 29 closes the radial ports 20 of direct communication with the filter 16 against an annular seat 32 on the bottom of the cup-shaped element mentioned above.
  • the cylindrical closing member 29 is moved between its two end positions by means of a thermostatic control element 33 for example of the wax type, or equivalent element, which, through changes of the temperature of the oil coming from the chamber 11 is extended or retracted thus moving the closing member mentioned above.
  • a thermostatic control element 33 for example of the wax type, or equivalent element, which, through changes of the temperature of the oil coming from the chamber 11 is extended or retracted thus moving the closing member mentioned above.
  • the bulb of the thermostatic element 33 is fastened to a supporting member inside the cylinder 29 surrounded by a set of holes 34 for the passage of the oil, while the rod 35 of the thermostatic element is fastened to the cover 31 in any suitable way; for example, by means of a cup member 36 housed in a seat in the cover 31 and pushed towards the above-mentioned shaft by a spring 37.
  • a second spring 38 is disposed between the bottom 17a of the valve body 17 and the perforated support member 17b for the thermostatic element 33 in the closing cylinder 29 to push the cylinder towards the above mentioned first operative position, thus opposing the action of the thermostatic element 33.
  • the cartridge 23 of the filter can be withdrowen and removed simply by removing the end closure cover 39 of the housing 14 since the cartridge 23 of the filter is fixed to the cover 39 by means of a tie rod 40 as shown.
  • the cylinder 29 of the thermostatic valve 15, operated by the element 33 sensitive to temperature moves gradually from one position, where the passage 26 towards the conduit leading to the heat exchanger 28 is completely closed and the direct passages 20 and 21 to the oil filter 16 are completely open, to the opposite position, where the condition of the above-mentioned passages is reversed.
  • the thermostatic bulb 33 with which it comes in contact pushes out the rod 35 and forces the closing cylinder 29 to move towards the right, partially closing the passage ports 20 leading to the oil filter and uncovering contemporaneously part of the port 42 towards the opening 26 connected to the conduit towards the cooler 28. Therefore, part of the oil will begin to flow through the appropriate holes 34 in the closing cylinder, and from these towards the exit 26 connected to the cooler 28.
  • the cylinder 29 When the maximum calibration temperature is reached, the cylinder 29 will have completely closed the direct passage towards the filter 16 and all the oil will have to circulate through the cooler 28 to return to the filter 16 by an appropriate return conduit connected to the inlet port 27 of the filter housing.
  • a device is supplied for the circulation and cooling of the oil passing from the oil chamber of a rotary compressor to the stator chamber, which makes use of a particular arrangement of a unit comprising a thermostatic valve and an oil circulation filter, housed and aligned in a single casing positioned underneath and in direct contact with the oil chamber of the compressor.
  • a unit comprising a thermostatic valve and an oil circulation filter, housed and aligned in a single casing positioned underneath and in direct contact with the oil chamber of the compressor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Lubricants (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (7)

1. Eine Vorrichtung für die Kühlung und den Umlauf des Öls zwischen einer Ölkammer (11) und einer Statorkammer (13) im Gehäuse (10) eines Dreh-Luftkompressors, wobei die Vorrichtung ein thermisch betätigtes Regelventil (15) und einen Ölfilter (16) aufweist, in einem Ölumlaufweg zwischen der Ölkammer (11) und der Statorkammer (13) des Luftkompressors, wobei das besagte Regelventil (15) und der besagte Ölfilter (16) axial ausgelegt und mit besagtem Weg direkt beziehungsweise über einen abgezweigten Kreislauf verbindbar sind, gekennzeichnet dadurch, daß die Vorrichtung ein zylinderförmiges Gehäuse für besagtes Regelventil (15) und besagten Ölfilter (16), die axial ausgelegt sind, aufweist, wobei das besagte Gehäuse thermisch in Kontakt steht mit und angebracht ist unter der Ölkammer in besagtem Gehäuse (10) des Luftkompressors.
2. Eine Vorrichtung wie unter Patentanspruch 1 beschrieben, gekennzeichnet durch den Umstand, daß das thermostatische Ventil (15) ein schalenförmiges zylindrisches Hohlgehäuse (17) aufweist, dessen Boden (17a) zum Ölfilter (16) hin ausgerichtet ist, wobei das besagte Ventilgehäuse (17) nah beim Boden einen ersten Satz (20) von Ölauslaßöffnungen aufweist, die über direkte Kanäle (21) mit dem Ölfilter (16) verbunden sind, wobei das besagte Ventilgehäuse (17) bei seinem anderen offenen Ende auf Höhe eines zweiten Ölauslasses (26) endet, der mit einem abgezweigten Kühlkreislauf (28) verbunden ist, sowie durch den Umstand, daß das thermostatische Ventil (15) einen hohlen Verschlußzylinder (29) aufweist, der einen axialen Durchlaß zwischen einem Öleinlaß (18) in das Gehäuse (17) des Ventils (15) und der Auslaßöffnung (26) an einem Ende des Ventilgehäuses (17) schafft, und ein axial verlängerbares und einziehbares thermostatisches Regelelement (33), das funktionell mit dem Verschlußzylinder (29) und einem Verbindungsstück (31) verbunden ist, das befestigt ist an oder ein Teil ist mit dem Gehäuse (14) des Ventils (15).
3. Eine Vorrichtung wie unter Patentanspruch 2 beschrieben, gekennzeichnet durch den Umstand, daß das besagte thermostatische Element (33) einen temperaturempfindlichen Kolben aufweist, der im Verschlußzylinder (29) angebracht ist, und eine Gleitstange, die funktionell mit dem Endverschlußdeckel (31) des Gehäuses (14) des thermostatischen Ventils (15) verbunden ist.
4. Eine Vorrichtung wie unter Patentanspruch 3 beschrieben, gekennzeichnet durch den Umstand, daß das thermostatische Ventil (15) durch daß Ende des Gehäuses (14) eingezogen werden kann, welches mit dem obengenannten Endverschluß (31) verschlossen wird.
5. Eine Vorrichtung wie unter Patentanspruch 1 beschrieben, gekennzeichnet durch den Umstand, daß der besagte erste Satz von Ölauslaßöffnungen (20) im Ventilgehäuse (17) über longitudinale Führungen (21) an der Außenoberfläche des Ventilgehäuses (17) mit dem Filterraum (22) kommuniziert
6. Eine Vorrichtung wie unter Patentanspruch 1 beschrieben, gekennzeichnet durch den Umstand, daß die Ölfilterpatrone (24) direkt von einem Verschlußdeckel (39) des Raums (22) getragen wird, in dem der Filter (16) untergebracht ist.
7. Eine Vorrichtung wie unter Patentanspruch 1 beschrieben, gekennzeichnet durch den Umstand, daß sie ein einziges Gehäuse (14) aufweist, das sowohl das thermostatische Ventil (15) als auch den Ölfilter (16) enthält, wobei das besagte Gehäuse (14) ein Teil mit dem Kompressorgehäuse (10) ist und auf Höhe des Bodens der Ölkammer (11) desselben liegt.
EP88101074A 1987-02-02 1988-01-26 Einheit für Kompressoren bestehend aus thermostatischem Ventil und Ölfilter Expired - Lifetime EP0277582B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101074T ATE62324T1 (de) 1987-02-02 1988-01-26 Einheit fuer kompressoren bestehend aus thermostatischem ventil und oelfilter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8720718U IT209903Z2 (it) 1987-02-02 1987-02-02 Gruppo valvola termostatica e filtro olio, per compressori.
IT2071887U 1987-02-02

Publications (3)

Publication Number Publication Date
EP0277582A2 EP0277582A2 (de) 1988-08-10
EP0277582A3 EP0277582A3 (en) 1989-05-03
EP0277582B1 true EP0277582B1 (de) 1991-04-03

Family

ID=11171036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101074A Expired - Lifetime EP0277582B1 (de) 1987-02-02 1988-01-26 Einheit für Kompressoren bestehend aus thermostatischem Ventil und Ölfilter

Country Status (5)

Country Link
EP (1) EP0277582B1 (de)
AT (1) ATE62324T1 (de)
DE (1) DE3862202D1 (de)
ES (1) ES2022472B3 (de)
IT (1) IT209903Z2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318411A (en) * 1993-07-21 1994-06-07 Carrier Corporation Compressor with integral filter
DE4443847C2 (de) * 1994-12-09 1997-10-16 Hansa Metallwerke Ag Kompressor, insbesondere Kolbenkompressor, für Kälteanlagen, insbesondere für Klimaanlagen
EP1379786B1 (de) * 2001-04-17 2005-03-16 TM.C. S.P.A. Termomeccanica Compressori Schraubenverdichtereinheit mit eingebauter ölkühlung
DE10153459B9 (de) * 2001-10-30 2004-09-09 Kaeser Kompressoren Gmbh Anordnung zur Steuerung des Kühlfluidstroms in Kompressoren
DE102008051267A1 (de) * 2008-10-10 2010-04-15 Mahle International Gmbh Thermostatventil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1134224A (en) * 1965-05-03 1968-11-20 Hymatic Eng Co Ltd Improvements relating to compressors
DE2500046C2 (de) * 1975-01-02 1987-01-15 Sullair Europe Corp., 8192 Geretsried Durchflußregler für Kühlflüssigkeit, insbesondere bei einem Schraubenverdichter mit Flüssigkeitseinspritzung
DE2854762C2 (de) * 1978-12-19 1983-01-05 Bayerische Motoren Werke AG, 8000 München Vorrichtung zum Steuern des Schmieröl- Druckumlaufsystemes bei einer Brennkraftmaschine
US4537346A (en) * 1983-10-17 1985-08-27 Standard-Thomson Corporation Fail-safe oil flow control apparatus

Also Published As

Publication number Publication date
ATE62324T1 (de) 1991-04-15
IT209903Z2 (it) 1988-11-04
DE3862202D1 (de) 1991-05-08
EP0277582A3 (en) 1989-05-03
IT8720718V0 (it) 1987-02-02
ES2022472B3 (es) 1991-12-01
EP0277582A2 (de) 1988-08-10

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