GB355469A - Improvements in or relating to ventilating fans - Google Patents

Improvements in or relating to ventilating fans

Info

Publication number
GB355469A
GB355469A GB2211330A GB2211330A GB355469A GB 355469 A GB355469 A GB 355469A GB 2211330 A GB2211330 A GB 2211330A GB 2211330 A GB2211330 A GB 2211330A GB 355469 A GB355469 A GB 355469A
Authority
GB
United Kingdom
Prior art keywords
casing
fan
wall
rotate
top plate
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
GB2211330A
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.)
DONALD ARTHUR JENNINGS
General Electric Co PLC
Original Assignee
DONALD ARTHUR JENNINGS
General Electric Co PLC
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 DONALD ARTHUR JENNINGS, General Electric Co PLC filed Critical DONALD ARTHUR JENNINGS
Priority to GB2211330A priority Critical patent/GB355469A/en
Publication of GB355469A publication Critical patent/GB355469A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

355,469. Centrifugal fans. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and JENNINGS, D. A., of General Electric Co., Witton, Birmingham. July 22, 1930, No. 22113. [Class 110 (i).] A ventilating fan driven by an electric motor 16 delivers a stream of air through an opening in the casing ; the air passing through the fan acts upon a member attached to the casing thereby causing the latter to rotate so that the air stream sweeps over a wide area. The fixed support consists of a base 1, top plate 3 and bottom plate 2 connected by rods 4, and crimped wires 10 forming a guard. The fan has blades 24 fixed between a disc 21 and a ring 23 ; the latter is uppermost and it forms the inlet side of the fan. The blades may be pressed from sheet iron and have curved faces 26. The casing 15 has a bottom plate 27, a top plate 28 with a central opening 42. The wall 29 is a cylindrical wall with the same axis as the impeller, but the wall 30 is of involute form ; the walls 29, 30 merge together at the point 34, while at the other side of the gap 41 they are joined by an intermediate wall 33 which is inclined at approximately 45‹ to the diameter at that place. Two vanes 35 are arranged across the gap 41 to deflect the discharging air upwards and downwards. A blade 38 is secured to the wall 30 and may be set in any position about its pivot by means of the screw 39. Air passing through the apparatus acts on this blade and causes the casing 15 to rotate on the bearing 32. Governor arms 44 are carried by pivots 43 on the bottom of the casing, and have leather pads 46 to engage the steel brake ring 47. When the casing 15 commences to rotate, the inertia of the parts keeps the arms against the stop 48, but as the speed increases centrifugal force acts upon the arms and causes the pads 46 to engage the ring 47 to exert a braking effect. An electric heater 51 is supported in the inlet of the fan, and a handle 7 is secured to the top plate.
GB2211330A 1930-07-22 1930-07-22 Improvements in or relating to ventilating fans Expired GB355469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2211330A GB355469A (en) 1930-07-22 1930-07-22 Improvements in or relating to ventilating fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2211330A GB355469A (en) 1930-07-22 1930-07-22 Improvements in or relating to ventilating fans

Publications (1)

Publication Number Publication Date
GB355469A true GB355469A (en) 1931-08-27

Family

ID=10174099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2211330A Expired GB355469A (en) 1930-07-22 1930-07-22 Improvements in or relating to ventilating fans

Country Status (1)

Country Link
GB (1) GB355469A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251977A (en) * 2011-08-24 2011-11-23 张家港施亿百机电设备有限公司 External tilting centrifugal fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102251977A (en) * 2011-08-24 2011-11-23 张家港施亿百机电设备有限公司 External tilting centrifugal fan
CN102251977B (en) * 2011-08-24 2013-01-16 张家港施亿百机电设备有限公司 External tilting centrifugal fan

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