JPS57159989A - Tooth form of screw rotor - Google Patents

Tooth form of screw rotor

Info

Publication number
JPS57159989A
JPS57159989A JP4390481A JP4390481A JPS57159989A JP S57159989 A JPS57159989 A JP S57159989A JP 4390481 A JP4390481 A JP 4390481A JP 4390481 A JP4390481 A JP 4390481A JP S57159989 A JPS57159989 A JP S57159989A
Authority
JP
Japan
Prior art keywords
rotor
tooth form
temperature
rotors
female
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
JP4390481A
Other languages
Japanese (ja)
Other versions
JPS6147992B2 (en
Inventor
Katsuhiko Kasuya
Hidetomo Mori
Mitsuru Fujiwara
Tetsuzou Matsunaga
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4390481A priority Critical patent/JPS57159989A/en
Publication of JPS57159989A publication Critical patent/JPS57159989A/en
Priority to US06/436,371 priority patent/US4492546A/en
Publication of JPS6147992B2 publication Critical patent/JPS6147992B2/ja
Granted legal-status Critical Current

Links

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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/084—Toothed wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary-Type Compressors (AREA)
  • Gears, Cams (AREA)

Abstract

PURPOSE:To greatly improve the performance efficiency and the reliability in the engagement of male and female screw rotors, by designing the tooth form of both rotors in consideration with the temperature thereof so that the optimum clearance is maintained therebetween during actual operation. CONSTITUTION:The basic tooth form 8 of a male rotor is deformed into a rotor tooth form 9 due to the thermal expansion of rotors 1, 2 during actual operation. Such a deformed rotor tooth form 9 can be previously determined by a calculation method such as, for example, a finite element method on the basis of the temperature distribution which is beforehand obtained through the measurement of the internal temperature of the rotor. The rotor tooth form 10 of the female rotor 1 created by the rotor tooth form 9 of the male rotor 9 is directly determined from the rotor tooth form 9 deformed due to its thermal expansion. Further, the rotor tooth form 11 of the female rotor 1 in its normal temperature can be obtained by cooling the female rotor 1 down to the normal temperature. Thus, the minimum clearance may be maintained over the whole range of the engagement of both rotors by creating the rotor tooth form in consideration with the rotor temperature as above-mentioned.
JP4390481A 1981-03-27 1981-03-27 Tooth form of screw rotor Granted JPS57159989A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4390481A JPS57159989A (en) 1981-03-27 1981-03-27 Tooth form of screw rotor
US06/436,371 US4492546A (en) 1981-03-27 1982-10-25 Rotor tooth form for a screw rotor machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4390481A JPS57159989A (en) 1981-03-27 1981-03-27 Tooth form of screw rotor

Publications (2)

Publication Number Publication Date
JPS57159989A true JPS57159989A (en) 1982-10-02
JPS6147992B2 JPS6147992B2 (en) 1986-10-22

Family

ID=12676692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4390481A Granted JPS57159989A (en) 1981-03-27 1981-03-27 Tooth form of screw rotor

Country Status (1)

Country Link
JP (1) JPS57159989A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951183A (en) * 1982-09-16 1984-03-24 Hitachi Ltd Screw rotor
JPS60173382A (en) * 1984-02-17 1985-09-06 Hokuetsu Kogyo Co Ltd Screw rotor
JPS61197788A (en) * 1985-02-27 1986-09-02 Hitachi Ltd Unlubricated screw compressor
JPH021508Y2 (en) * 1988-10-12 1990-01-16
US4963079A (en) * 1986-10-24 1990-10-16 Hitachi, Ltd. Screw fluid machine with high efficiency bore shape
JP2010196631A (en) * 2009-02-26 2010-09-09 Hitachi Industrial Equipment Systems Co Ltd Screw rotor and method for manufacturing screw rotor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951183A (en) * 1982-09-16 1984-03-24 Hitachi Ltd Screw rotor
JPS60173382A (en) * 1984-02-17 1985-09-06 Hokuetsu Kogyo Co Ltd Screw rotor
JPS61197788A (en) * 1985-02-27 1986-09-02 Hitachi Ltd Unlubricated screw compressor
US4963079A (en) * 1986-10-24 1990-10-16 Hitachi, Ltd. Screw fluid machine with high efficiency bore shape
JPH021508Y2 (en) * 1988-10-12 1990-01-16
JP2010196631A (en) * 2009-02-26 2010-09-09 Hitachi Industrial Equipment Systems Co Ltd Screw rotor and method for manufacturing screw rotor

Also Published As

Publication number Publication date
JPS6147992B2 (en) 1986-10-22

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