EP0169904A1 - Rotor pour pompe rotative a ailettes et moteur - Google Patents

Rotor pour pompe rotative a ailettes et moteur Download PDF

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Publication number
EP0169904A1
EP0169904A1 EP84900881A EP84900881A EP0169904A1 EP 0169904 A1 EP0169904 A1 EP 0169904A1 EP 84900881 A EP84900881 A EP 84900881A EP 84900881 A EP84900881 A EP 84900881A EP 0169904 A1 EP0169904 A1 EP 0169904A1
Authority
EP
European Patent Office
Prior art keywords
rotor
rotary shaft
rotor body
whiskers
hollow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84900881A
Other languages
German (de)
English (en)
Other versions
EP0169904A4 (fr
Inventor
Hiroshi Sakamaki
Susumu Sugishita
Yukio Horikoshi
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.)
Nippon Piston Ring Co Ltd
Original Assignee
Nippon Piston Ring Co Ltd
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
Priority claimed from JP2861183A external-priority patent/JPS59155592A/ja
Priority claimed from JP12875683A external-priority patent/JPS6022091A/ja
Priority claimed from JP12875583A external-priority patent/JPS6022090A/ja
Application filed by Nippon Piston Ring Co Ltd filed Critical Nippon Piston Ring Co Ltd
Publication of EP0169904A4 publication Critical patent/EP0169904A4/fr
Publication of EP0169904A1 publication Critical patent/EP0169904A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons

Definitions

  • the invention relates to a hollow rotor for use in vane-type pumps and rotors.
  • Vane-type pumps and motors are widely used in most industries and conventionally provided with such relatively heavy solid rotors as disclosed in Tokkyo Kokai Koho (Japanese Published Unexamined Patent Application) No. 5E 5988. It is always required to reduce the weight of a pump. Recently, the pump for use in vehicles has been desired to be less in weight for saving energy. The pump can not be less in weight without substituting a heavy solid rotor for a hollow light rotor. However, it is a problem how to efficiently make a hollow rotor.
  • a hollow rotor is as thin as possible and that rotor elements, such as a rotor body, a rotor shaft, and side plates, are made of light metal such as aluminum and the like. This needs to solve another problem that a thin rotor body or light metal shaft is too fragile to be practically used.
  • a heat pipe is desirably built in a rotor for cooling the inside of the pump.
  • the invention consists in a rotor comprising a hollow body, both end plates welded to the opposite end faces of the rotor body, and at least a rotary shaft fixed to one of the both end plates.
  • the hollow body and the rotary shaft are preferably made of a base metal reinforced by whiskers.
  • the base metal may be either ferrous or non-ferrous material.
  • the whisker may be of inorganic material, such as silicon carbide, carbon and glass, that has a softening or melting temperature higher than the base metal.
  • the hollow body or rotary shaft can be made of the composite material as described above by a casting method. Whiskers are so compacted to have at least about 50% void and then set in a mold. Then, molten base metal is poured into the mold to infiltrate the void in the whiskers and form a complete hollow body reinforced by whiskers or superhigh strength fibers having an extremely high specific intensity, thereby the body being able to have a very thin and light wall as compared with the conventional one.
  • a heat-pipe can be built in the rotor in a manner that working liqid is confined in a blind hole which is formed in the rotary shaft and tapered toward a pulley on the rotary shaft.
  • the blind hole is sealed by a plug mounted on the center of the end plate. Otherwise, the liquid can be confined within the full inside of the rotor.
  • the hollow rotor has a simple construction in which a hollow body is welded to the both end plates and that it is less in weight and easy in mass-production. Another advantage is that heat-pipes is easily built in the rotor for cooling the inside.
  • the rotor 10 has a hollow rotor body 12 shaped by means of extrusion, press-working or the like, the both end plates 13, 14 which are separately fabricated by press-working, casting or forging and then bonded to the opposite faces of the hollow rotor body by welding, preferably by resistance welding.
  • the rotary shaft 11 and the end plate 14 can be fabricated as one body by a single process of forging, which might need more cost than the aforementioned press-working and welding process.
  • the hollow rotor 10 is light and has its elements, such as hollow rotor body 12, rotary shaft 11 and end plates 13, 14, which can easily be manufactured and assembled by welding, thereby being suitable for mass-production at a low cost.
  • the rotor body 12 is provided with at least a reinforcement plate 16 which is similar in shape to the hollow section of the hollow body and fixed to the inner surface of the body 12 as seen in FIG. 2.
  • the reinforced body works well under severe conditions in. which the rotor body 12 of FIG. 1 would have the vane groove warped to prevent the vane from smoothly moving out of the vane groove.
  • the rotary shaft 11 is formed with a blind hole 2 tapering toward the pulley-mounting end, prior to having the opposite end welded to the end plate 14.
  • the blind hole 2 has a threaded inlet 3 opened to the inside of the rotor body 12.
  • the blind hole 2 is filled with heat-pipe working liquid and then sealed up with the intervention of a sealing member 4 and a plug 5 which is screwed in the inlet 3.
  • the rotary shaft 11 serves as a heat pipe; one end fixed to the end plate 14 as a heat absorption part and the other pulley-mounting end as a heat discharge part.-Heat inside the rotor is transferred through the end plate 14 to the heat absorption part in which the working liquid is caused to evaporate.
  • the working liquid vapor passes through the center of the blind hole 2 to the heat discharge part in which it gives the heat through the pulley-mounting end to the open air to liquidize and return to the heat absorption part along the conical periphery of the blind hole 2.
  • the heat-pipe action carries out quick heat exchange and allows efficient discharge of inside heat, so that the temperature in the rotor 10.never rises over a tolerable limit.
  • the rotor body 12 as well as the rotary shaft 11 can contain the working liquid and serve as the heat absorption part of a heat pipe for more rapid cooling of the rotor 10.
  • the blind hole 2 is similarly formed in one-side rotary shaft 11 as shown in FIG. 3.
  • the inlet 3 is formed in the opposite side rotary shaft 15 fixed to the other end plate 13.
  • the plug 5 is screwed into the inlet 3 in the rotary shaft 15.
  • the inlet may be provided in the center of the flat end plate which is centrally concaved. The plug can be wel- d to the inlet.
  • the rotor body 12 may be made of a composite _materail of a base light metal M, such as aluminum, aluminum alloy, magnesium alloy or the like, and whiskers F of inorganic substance, such as silicon carbide, carbon, glass or the like.
  • the whiskers F arc so compacted to have at least about 50% void and then set in a mold in which the body is to be casted. Molten base light metal M is poured into the mold to infiltrate the void in the compacted whiskers and shape the rotor body 12 consisting of a composite material.
  • the rotor body 12 can have a thin, light, and strong wall made of a light metal M reinforced by fibrous superhigh strength whiskers F and the weight remarkably reduced as compared with the usual.
  • the casted body is welded to a separately fabricated end plate with a rotary shaft to produce a complete rotor.
  • the hollow body of aluminum or aluminum alloy can have its outer periphery partly or fully treated by anodic oxidation.
  • the vane groove is preferable to be oxidized for smooth sliding of the vane.
  • the rotor body 12 can be manufactured by forging.
  • the whiskers F are so compacted to have at least about 50% void and then set in a mold in which the body is to be made. Molten base light metal M is poured into the mold to infiltrate the void in the compacted whiskers to produce a preform of a composite material.
  • the preform is shaped into a hollow rotor body 12 in which the whiskers F aline along grain flow lines in the base metal M as shpwn in FIG. 6. Therefore, the forged rotor 12 has an extremely high specific intensity.
  • the both end plates 13, 14 with the respective rotary shafts 11, 15 can also be made of a composite material consisting of a base ferrous or non-ferrous metal M, such as steel, aluminum, aluminum alloy, and magnesium alloy, and whiskers F of inorganic substance, such as silicon carbide, carbon, and glass.
  • the whiskers F are so compacted by press-working to have at least about 50X void and then set in a mold in which a rotary shaft integral with an end plate is to be casted. Molten base metal M is poured into the mold to infiltrate the void in the compacted whiskers to form rotary shaft 11 or 15 with the respective end plate 13 or 14 consisting of a composite material.
  • the rotary shaft 11 or 15 with rotary shaft 13 or 14 can have a thin, light and strong structure made of a metal M reinforced by fibrous superhigh strength whiskers F and the weight remarkably reduced as compared with the usual.
  • the rotary shaft 11, 15 with the respective end-plates 13, 14 are welded to the separately fabricated rotor body to produce a complete rotor.
  • the end plate integral with the rotary shaft of a composite material can also be manufactured by forging.
  • the whiskers are so compacted to have at least about 50% void and then set in a mold into which molten base metal is poured. Thw molten base metal M infiltrates the void in the compacted whiskers F to produce a preform consisting of a composite material, as shown in FIG. 8.
  • the preform is shaped into the rotary shaft 11 or 13 with the end plate 13 or 14 in which the whiskers F aline along grain flow lines in the base metal M as shown in FIG. 9. Therefore, the forged rotary shafts 11, 15 with the respective end plates 13, 14 have an extremely high specific intensity.
  • the inventive rotor for use in vane pumps and motors is less in weight because of being hollow. It is especially suitable to a vane pump applicable as a supercharger for an a mobile engine and a compressor for air cooler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

Un rotor (10) pour une pompe rotative à ailettes et un moteur comprend un corps creux de rotor (12), des plaques d'extrémité (13, 14) soudées aux deux surfaces d'extrémité, et un arbre rotatif (11) fixé aux plaques d'extrémité. En cas de besoin un fluide de travail de conduite de chaleur peut être scellé à l'intérieur de l'arbre rotatif (11) ou du corps de rotor (12). Le rotor (10) pourvu du corps de rotor (12), de l'arbre rotatif (11) et des plaques d'extrémité (13, 14) est réalisé en un matériau composite obtenu en mélangeant des monocristaux dans un métal matriciel, et présente une résistance suffisamment élevée même en réduisant davantage l'épaisseur de la paroi pour obtenir un rotor extrêmement léger.
EP84900881A 1983-02-24 1984-02-22 Rotor pour pompe rotative a ailettes et moteur Withdrawn EP0169904A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2861183A JPS59155592A (ja) 1983-02-24 1983-02-24 回転式流体ポンプ用ロ−タ
JP28611/83 1983-02-24
JP128755/83 1983-07-16
JP12875683A JPS6022091A (ja) 1983-07-16 1983-07-16 回転式流体ポンプ用ロ−タ
JP128756/83 1983-07-16
JP12875583A JPS6022090A (ja) 1983-07-16 1983-07-16 回転式流体ポンプ用ロ−タ

Publications (2)

Publication Number Publication Date
EP0169904A4 EP0169904A4 (fr) 1985-10-17
EP0169904A1 true EP0169904A1 (fr) 1986-02-05

Family

ID=27286258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900881A Withdrawn EP0169904A1 (fr) 1983-02-24 1984-02-22 Rotor pour pompe rotative a ailettes et moteur

Country Status (2)

Country Link
EP (1) EP0169904A1 (fr)
WO (1) WO1984003329A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477601A1 (fr) * 1990-09-28 1992-04-01 Leybold Aktiengesellschaft Méthode de fabrication d'un rotor d'une pompe à vacuum et rotor fabriqué suivant cette méthode
EP0627556A1 (fr) * 1993-03-18 1994-12-07 Praxair S.T. Technology, Inc. Rotor revêtu de carbides ou borides pour moteur ou pompe à déplacement positif

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021134A (ja) * 1983-07-16 1985-02-02 Nippon Piston Ring Co Ltd 回転式流体ポンプ用ロ−タの製造方法
JPS61152987A (ja) * 1984-12-26 1986-07-11 Nippon Piston Ring Co Ltd 回転式流体ポンプ用ロ−タの製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE307756C (fr) *
IE34277B1 (en) * 1968-09-12 1975-04-02 Ostberg Bernhard Nils Vane-type rotary positive-displacement pumps and compressors
US3552895A (en) * 1969-05-14 1971-01-05 Lear Siegler Inc Dry rotary vane pump
JPS5010613U (fr) * 1973-05-30 1975-02-03
JPS5738791B2 (fr) * 1974-02-04 1982-08-17
JPS52116915A (en) * 1976-03-25 1977-09-30 Takashi Sakahashi Rotary compressors
JPS5541512U (fr) * 1978-09-08 1980-03-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477601A1 (fr) * 1990-09-28 1992-04-01 Leybold Aktiengesellschaft Méthode de fabrication d'un rotor d'une pompe à vacuum et rotor fabriqué suivant cette méthode
EP0627556A1 (fr) * 1993-03-18 1994-12-07 Praxair S.T. Technology, Inc. Rotor revêtu de carbides ou borides pour moteur ou pompe à déplacement positif

Also Published As

Publication number Publication date
WO1984003329A1 (fr) 1984-08-30
EP0169904A4 (fr) 1985-10-17

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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

17P Request for examination filed

Effective date: 19850218

AK Designated contracting states

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19860825

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19861229

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SAKAMAKI, HIROSHI

Inventor name: HORIKOSHI, YUKIO

Inventor name: SUGISHITA, SUSUMU