EP0335362A1 - Compresseur - Google Patents

Compresseur Download PDF

Info

Publication number
EP0335362A1
EP0335362A1 EP89105521A EP89105521A EP0335362A1 EP 0335362 A1 EP0335362 A1 EP 0335362A1 EP 89105521 A EP89105521 A EP 89105521A EP 89105521 A EP89105521 A EP 89105521A EP 0335362 A1 EP0335362 A1 EP 0335362A1
Authority
EP
European Patent Office
Prior art keywords
fan wheel
compressor according
balancing
crank pin
balancing mass
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
EP89105521A
Other languages
German (de)
English (en)
Other versions
EP0335362B1 (fr
Inventor
Klaus Nitsche
Johann Zsiga
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.)
Duerr Dental SE
Original Assignee
Duerr Dental SE
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 Duerr Dental SE filed Critical Duerr Dental SE
Publication of EP0335362A1 publication Critical patent/EP0335362A1/fr
Application granted granted Critical
Publication of EP0335362B1 publication Critical patent/EP0335362B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/066—Cooling by ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/04—PTFE [PolyTetraFluorEthylene]

Definitions

  • the invention relates to a compressor with a cylinder, with a piston running in the cylinder, with a drive motor working on a crankshaft and with a connecting rod for the articulated connection of a crank pin of the crankshaft to the piston and with a balancing mass.
  • the balancing mass consists of a section of the crankshaft which is balanced overall in a manner similar to the crankshafts of internal combustion engines. For small compressors where the manufacturing costs must not be high, the crankshaft is often not balanced.
  • the present invention is intended to create a compressor which is compact, inexpensive to manufacture and nevertheless has no imbalances.
  • the actual motor shaft can have complete rotational symmetry, ie it can be a standard motor shaft of an electric drive motor. Since the crank pin and the balancing mass are equally part of the fan wheel, this unit can be fully balanced before it is attached to the motor shaft, which can be done easily and inexpensively by turning off material on numerically controlled machine tools. This balanced unit also builds briefly.
  • crank pin is completely freely accessible from one side on the fan wheel, which has not yet been pushed onto the motor shaft. So you can slide on a bearing and the connecting rod of the piston unhindered, does not need split bearings.
  • the pre-assembled unit can be easily attached to the motor shaft.
  • a tandem compressor can be built using one and the same fan wheel with a molded crank pin, in which the second end of the motor shaft carries a second fan wheel / crank pin unit, which then drives the second piston of the compressor.
  • the balancing mass can have a particularly simple geometry, namely the cross-section that remains the same in the circumferential direction of a rib.
  • crank pins with different degrees of eccentricity For the production of compressors with different strokes, starting from a blank with an oversized pin section, by turning off material with different eccentricity, fan wheels with crank pins with different degrees of eccentricity can be produced.
  • the diameter of the crank pin itself is preferably always chosen to be the same size, so that using unchanged connecting rods and unchanged pistons only by modification the mechanical processing of the fan wheel blank can build compressors of different strokes.
  • a positioning groove provided in the peripheral surface of the fan wheel makes it easier to clamp the fan wheel blank in a processing machine to produce a crank pin opposite the balancing mass already provided in the fan wheel blank.
  • a larger balancing mass can also be accommodated within the predetermined clear contour of the fan wheel by thickening the blades of the fan wheel opposite the crank pin.
  • the further measure also serves to compensate for larger imbalances, in the half of the fan wheel lying on the same side as the crank pin, additionally to provide a circumferential balancing groove.
  • Figure 1 shows an axial section through an oil-free small compressor with a typical delivery rate of about 35 l / min at a working pressure of 7 bar.
  • a crankcase 10 carries an annular bearing seat 14, which receives a roller bearing 16, via star-shaped, inwardly projecting arms 12. The race of the latter sits on a section 18 of a motor shaft, generally designated 20. The latter is connected to a rotor 22 which cooperates with a stator 24.
  • the stator 24 engages in a motor bore 26 of the crankcase 10 and in a motor bore 28 of a housing end part 30 and is axially supported on the shoulders provided on these housing parts.
  • the housing end part 30 is clamped to the crankcase 10 via threaded bolts 32.
  • a second bearing seat 34 is formed on the housing end part 30 and receives a roller bearing 36 for the left end of the motor shaft 20.
  • the latter carries a fan wheel 38 in the vicinity of its left end.
  • a fan wheel designated overall by 42, which at the same time also fulfills the function of a crank pin and a balancing body.
  • a hub section 44 of the fan wheel 42 on the left in the drawing is provided with a central bore 45 for receiving the motor shaft 20 and with a bearing surface 46 which is eccentric with respect to the axis of the motor shaft 20.
  • a roller bearing 48 sits on the latter and engages in an opening 50 which is provided at the lower end of a connecting rod 52.
  • a lower piston plate 54 is molded onto the upper end of the connecting rod 52.
  • An upper piston plate 56 is screwed onto the latter by means of a screw 58, a cup-shaped PTFE piston ring 60 being clamped between the two piston plates 54, 56.
  • the piston plates 54, 56 run with great radial play in a cylinder 62, the working chamber 64 of the compressor lying above the piston plate 56 is sealed by the piston ring 60.
  • the cylinder 62 is cut from an extruded profile material with a corresponding cross-section and is machined on the cylinder running surface and the end faces.
  • a sealing ring 66 is inserted into the upper end face of the cylinder 62.
  • a valve plate 68 bears against the upper side of the cylinder 62 and carries an outlet plate valve 70 and an inlet plate valve (not shown in the drawing).
  • a seal 72 is in the top of the valve plate 68 inserted, which forms a sealing point to a cylinder head 74, designated overall by 74. In the latter an inlet channel and an outlet channel are formed, which are not shown in the drawing.
  • the cylinder head 74 is clamped to the crankcase 10 with the interposition of the valve plate 68 and the cylinder 62 using threaded bolts 76.
  • the fan wheel 42 has vanes 78 lying exactly in axial planes, which run towards an annular outer section 80 of the fan wheel.
  • the latter is provided with a semicircular balancing rib 82 projecting radially inwards. This lies opposite the center of the eccentric bearing surface 46 with respect to the axis of the motor shaft 20.
  • a positioning groove 84 is provided in the outer surface of the annular outer section 80 of the fan wheel 42.
  • the motor shaft is designed with a threaded end section 86.
  • a nut 88 runs on the latter and engages the hub section 44 via a washer 90 and thus presses the fan wheel 42 against a shoulder 92 of the motor shaft 20, which is predetermined by the shaft sections 18 and 40.
  • crankcase is closed on the right by a cover 94, which is provided with ventilation slots 96.
  • the balancing rib 82 in the fan wheel blank is cast to oversize, so that it is also sufficient for the most eccentric bearing surfaces 46 by cutting material from the inner peripheral surface of the balancing rib 82 and / or the Axial end face of the balancing rib 82 can then reduce the mass of this rib according to the eccentricity of the bearing surface 46.
  • the positioning groove 84 is provided, which is used for inserting the fan wheel blank in a predetermined manner Angular alignment is used in a tool clamping device of a lathe.
  • FIG. 4 shows how a tandem compressor can be produced using one and the same piston / fan wheel unit.
  • a second crankcase 10 ' is placed on the left end of the stator 24 in the drawing, which is identical to the crankcase 10, is only implemented by 180 °.
  • a fan wheel 42 ' is placed on the left end of the motor shaft, which corresponds exactly to the fan wheel 42, is only implemented by 180 °.
  • the remaining parts of the part of the tandem compressor located on the left in FIG. 4 correspond to the parts of the compressor according to FIGS. 1 to 3 already described above and thus also the part of the tandem compressor shown on the right in FIG. 4. These parts do not need to be explained in detail and each carry the same reference numerals, to which a comma is used only to distinguish them is attached.
  • FIG. 5 shows an axial section through a compressor which largely corresponds to the compressor shown in FIG. 1. Only with this compressor the piston is not rigidly connected to the connecting rod; one has rather a normal piston running to cylinder 62 with little play, which piston is connected to connecting rod 52 so as to be rotatable about an axis 98.
  • a longer cylinder 62 can be obtained simply by cutting off a longer piece of the corresponding extruded profile material, which cylinder is additionally provided with an insert 62a.
  • the fan wheel 42 In order to be able to compensate for even greater imbalances, in addition to the balancing rib 82 located within the outer section 80, the fan wheel 42 also has a balancing rib 100 projecting radially beyond this section. This is preferably not mechanically processed, and the entire unbalance compensation is accomplished by removing material from the balancing rib 82 . This means that the fan wheel 42 does not have to be reclamped for balancing.
  • Balancing using the balancing groove 102 has the additional advantage that the second-order imbalances (wobble moments) are also smaller.
  • Balancing groove 102 generated by milling also receives the possibility of increasing the counterbalance
  • the fan wheel 42 fulfills three functions: It conveys air into the interior of the crankcase 10. From there, most of the air flows along the outside of the cylinder 62, as a result of which the latter is cooled. - It has the integrally formed eccentric 46 for driving the piston, which is initially freely accessible from one end face, so that the bearing 48 and the lower end of the connecting rod 50 can be easily pushed onto it.
  • the fan wheel can be used to form a crankshaft simply applied to a normal standard motor shaft. - It carries the balancing masses to compensate for the imbalance caused by the eccentric 46 and the piston.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP89105521A 1988-03-30 1989-03-29 Compresseur Expired - Lifetime EP0335362B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8804272U DE8804272U1 (de) 1988-03-30 1988-03-30 Kompressor
DE8804272U 1988-03-30

Publications (2)

Publication Number Publication Date
EP0335362A1 true EP0335362A1 (fr) 1989-10-04
EP0335362B1 EP0335362B1 (fr) 1992-06-03

Family

ID=6822461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105521A Expired - Lifetime EP0335362B1 (fr) 1988-03-30 1989-03-29 Compresseur

Country Status (2)

Country Link
EP (1) EP0335362B1 (fr)
DE (2) DE8804272U1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001069083A2 (fr) * 2000-03-10 2001-09-20 Thomas Industries Inc. Ensemble compresseur comportant un deflecteur
FR2931903A1 (fr) * 2008-05-30 2009-12-04 Thomas Industries Inc Carter de pompe
CN1925278B (zh) * 2005-08-31 2010-05-12 乐金电子(天津)电器有限公司 压缩机电机转子平衡块改进结构
CN101832246A (zh) * 2010-04-21 2010-09-15 宝鸡市博磊化工机械有限公司 八列对称平衡式大型往复压缩机
US8326758B2 (en) 2007-08-06 2012-12-04 Enpulz, L.L.C. Proxy card representing many monetary sources from a plurality of vendors
CN111550409A (zh) * 2019-02-12 2020-08-18 纳博特斯克有限公司 空气压缩装置、空气压缩装置的制造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK715088A (da) * 1988-12-21 1990-06-22 Westergaard Knud E Ind As Motor-pumpe-enhed til en hoejtryksrenser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1622876A (en) * 1925-06-13 1927-03-29 Leo Hermann Air pump
US2236621A (en) * 1939-04-17 1941-04-01 Richard T Cornelius Motor pump unit
US2285215A (en) * 1939-06-08 1942-06-02 Binks Mfg Co Fluid compressor
FR1024376A (fr) * 1950-09-07 1953-04-01 Perfectionnement apporté aux ventilateurs de refroidissement, notamment pour compresseur d'air
US3817149A (en) * 1972-06-26 1974-06-18 Reutlinger & Sohne Compensation of unbalance in rotary bodies

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1622876A (en) * 1925-06-13 1927-03-29 Leo Hermann Air pump
US2236621A (en) * 1939-04-17 1941-04-01 Richard T Cornelius Motor pump unit
US2285215A (en) * 1939-06-08 1942-06-02 Binks Mfg Co Fluid compressor
FR1024376A (fr) * 1950-09-07 1953-04-01 Perfectionnement apporté aux ventilateurs de refroidissement, notamment pour compresseur d'air
US3817149A (en) * 1972-06-26 1974-06-18 Reutlinger & Sohne Compensation of unbalance in rotary bodies

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001069083A2 (fr) * 2000-03-10 2001-09-20 Thomas Industries Inc. Ensemble compresseur comportant un deflecteur
WO2001069083A3 (fr) * 2000-03-10 2002-03-14 Thomas Industries Inc Ensemble compresseur comportant un deflecteur
US6485266B2 (en) 2000-03-10 2002-11-26 Thomas Industries, Inc. Compressor assembly with deflector
CN1925278B (zh) * 2005-08-31 2010-05-12 乐金电子(天津)电器有限公司 压缩机电机转子平衡块改进结构
US8326758B2 (en) 2007-08-06 2012-12-04 Enpulz, L.L.C. Proxy card representing many monetary sources from a plurality of vendors
FR2931903A1 (fr) * 2008-05-30 2009-12-04 Thomas Industries Inc Carter de pompe
CN101832246A (zh) * 2010-04-21 2010-09-15 宝鸡市博磊化工机械有限公司 八列对称平衡式大型往复压缩机
CN101832246B (zh) * 2010-04-21 2011-09-07 宝鸡市博磊化工机械有限公司 八列对称平衡式大型往复压缩机
CN111550409A (zh) * 2019-02-12 2020-08-18 纳博特斯克有限公司 空气压缩装置、空气压缩装置的制造方法
EP3696411A1 (fr) * 2019-02-12 2020-08-19 Nabtesco Corporation Dispositif de compression d'air et procédé de fabrication de dispositif de compression d'air

Also Published As

Publication number Publication date
DE58901565D1 (de) 1992-07-09
DE8804272U1 (de) 1988-07-07
EP0335362B1 (fr) 1992-06-03

Similar Documents

Publication Publication Date Title
DE69723002T2 (de) Hydraulische Pumpe mit Elektromotorantrieb
EP2219917B1 (fr) Pompe à vide
DE102005047357A1 (de) Hydraulikaggregat für eine eine Schlupfregelung aufweisende hydraulische Fahrzeugbremsanlage
EP1019633A1 (fr) Compresseur a vis
EP0335362A1 (fr) Compresseur
DE102016121241A1 (de) Hydraulischer Antrieb, hydraulischer Motor und integrierte Pumpe mit dem hydraulischen Antrieb
EP0104343A1 (fr) Machine à fluide à pales réglables
DE19927400A1 (de) Hydraulische Fördereinrichtung
WO2005024236A1 (fr) Machine a piston rotatif
DE102015223401A1 (de) Motorbetriebener Verdichter
EP1664541A1 (fr) Machine a piston rotatif
DE102011011384B4 (de) Hand-Werkzeugmaschine mit einem Lamellenmotor aus einem Nicht-Metall
DE3904874C2 (de) Tandempumpe
DE3637229A1 (de) Baueinheit aus einer hydraulikpumpe und einer vakuumpumpe
DE10357145A1 (de) Handschleifmaschine, Aufnahmeflansch für ein Schleifwerkzeug und Auswuchteinheit
DE10234093A1 (de) Vorrichtung zur Verdichtung von Verbrennungsluft
DE3545674A1 (de) Rotationskolbenverdichter, insbesondere rootsgeblaese
WO2000068547A1 (fr) Dispositif de reglage de l'angle de rotation d'un arbre a cames par rapport au vilebrequin d'un moteur a combustion interne a piston
DE3716083A1 (de) Innenachsige drehkolbenmaschine
DE19834033A1 (de) Vakuumpumpe
DE102017204145A1 (de) Ölmehrfachpumpe und Kraftfahrzeug mit einer solchen Ölmehrfachpumpe
DE4428410C2 (de) Kompakte Regeleinheit für eine Flügelzellenpumpe
EP0381682B1 (fr) Compresseur cellulaire a piston rotatif
DE2503020A1 (de) Drehkolbenmaschine sowie verfahren zu ihrer herstellung
DE19717174A1 (de) Flügelzellenpumpe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR IT SE

17P Request for examination filed

Effective date: 19900324

17Q First examination report despatched

Effective date: 19901211

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR IT SE

REF Corresponds to:

Ref document number: 58901565

Country of ref document: DE

Date of ref document: 19920709

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89105521.2

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

Ref country code: SE

Payment date: 19960220

Year of fee payment: 8

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

Ref country code: BE

Payment date: 19960313

Year of fee payment: 8

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

Ref country code: SE

Effective date: 19970330

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

Ref country code: BE

Effective date: 19970331

BERE Be: lapsed

Owner name: DURR DENTAL G.M.B.H. & CO. K.G.

Effective date: 19970331

EUG Se: european patent has lapsed

Ref document number: 89105521.2

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

Ref country code: FR

Payment date: 19980213

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19980522

Year of fee payment: 10

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

Ref country code: FR

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

Effective date: 19991130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: DE

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

Effective date: 20000101

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

Ref country code: IT

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

Effective date: 20050329