GB689901A - Improvements in or relating to electrical heating of rotary compressors - Google Patents

Improvements in or relating to electrical heating of rotary compressors

Info

Publication number
GB689901A
GB689901A GB2733249A GB2733249A GB689901A GB 689901 A GB689901 A GB 689901A GB 2733249 A GB2733249 A GB 2733249A GB 2733249 A GB2733249 A GB 2733249A GB 689901 A GB689901 A GB 689901A
Authority
GB
United Kingdom
Prior art keywords
stator
pole pieces
rings
vanes
gap
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
Application number
GB2733249A
Inventor
David Gordon Henshaw
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.)
HONORARY ADVISORY COUNCIL SCI
Original Assignee
HONORARY ADVISORY COUNCIL SCI
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 HONORARY ADVISORY COUNCIL SCI filed Critical HONORARY ADVISORY COUNCIL SCI
Priority to GB2733249A priority Critical patent/GB689901A/en
Publication of GB689901A publication Critical patent/GB689901A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/047—Heating to prevent icing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

689,901. Induction heating; rotary compressors. SCIENTIFIC & INDUSTRIAL RESEARCH, HONORARY ADVISORY COUNCIL FOR. Oct: 13, 1950 [Oct. 25, 1649], No. 27332/49. Class 39(iii) In a rotary compressor, e.g. an axial flow compressor with a stator including guide vanes 12 and stator vanes 14 arranged in rings separated by a narrow gap in which a rotor with blades 19 is mounted in the gap, an electro-magnetic anti-icing unit comprises a pair of magnetizable pole pieces 22, 23 extending radially one in each of the guide and stator vane rings or in each of contiguous rings of the stator, the outer ends of the pole pieces being bridged by a magnetizable yoke 24 carrying an energizing winding to provide a magnetic field between the pole pieces across the gap containing the electrically conductive rotor blades in which eddy currents are thus induced. The pole pieces are arranged staggered in the stator casing so that the magnetic field between the pole pieces is mainly perpendicular to the chord of the rotor blades, which are non-magnetic e.g. of aluminium alloy or austenitic steel Several de- @cers may be spaced equally in the circumference of the stator and also axially of the stator, e.g. one bridging the guide and first stator ring and another bridging the first and second stator vane rings. The pole pieces have flat opposite faces in parallel planes set athwart the general plane containing the pole pieces and have rounded edges 25 so that they replace vanes when inserted in the stator. D.C. or A.C. e.g. at 400 cycles per second is used. Reference has been directed by the Comptroller to Specification 625,299.
GB2733249A 1949-10-25 1949-10-25 Improvements in or relating to electrical heating of rotary compressors Expired GB689901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2733249A GB689901A (en) 1949-10-25 1949-10-25 Improvements in or relating to electrical heating of rotary compressors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2733249A GB689901A (en) 1949-10-25 1949-10-25 Improvements in or relating to electrical heating of rotary compressors

Publications (1)

Publication Number Publication Date
GB689901A true GB689901A (en) 1953-04-08

Family

ID=10257849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2733249A Expired GB689901A (en) 1949-10-25 1949-10-25 Improvements in or relating to electrical heating of rotary compressors

Country Status (1)

Country Link
GB (1) GB689901A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490759A (en) * 1994-04-28 1996-02-13 Hoffman; Jay Magnetic damping system to limit blade tip vibrations in turbomachines
EP0727564A1 (en) * 1995-02-17 1996-08-21 Abb Research Ltd. Vibration damping for turbine blades
EP2110314A2 (en) * 2008-04-16 2009-10-21 United Technologies Corporation De-icing system for engine inlet and method of preventing ice formation
US10822999B2 (en) 2018-07-24 2020-11-03 Raytheon Technologies Corporation Systems and methods for fan blade de-icing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490759A (en) * 1994-04-28 1996-02-13 Hoffman; Jay Magnetic damping system to limit blade tip vibrations in turbomachines
EP0727564A1 (en) * 1995-02-17 1996-08-21 Abb Research Ltd. Vibration damping for turbine blades
EP2110314A2 (en) * 2008-04-16 2009-10-21 United Technologies Corporation De-icing system for engine inlet and method of preventing ice formation
EP2110314A3 (en) * 2008-04-16 2012-12-12 United Technologies Corporation De-icing system for engine inlet and method of preventing ice formation
US10822999B2 (en) 2018-07-24 2020-11-03 Raytheon Technologies Corporation Systems and methods for fan blade de-icing

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