GB876612A - Improvements relating to machines for inducing flow of fluid, for example, blowers - Google Patents

Improvements relating to machines for inducing flow of fluid, for example, blowers

Info

Publication number
GB876612A
GB876612A GB44292/60A GB4429260A GB876612A GB 876612 A GB876612 A GB 876612A GB 44292/60 A GB44292/60 A GB 44292/60A GB 4429260 A GB4429260 A GB 4429260A GB 876612 A GB876612 A GB 876612A
Authority
GB
United Kingdom
Prior art keywords
blade
fluid
coil
dec
wire
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
GB44292/60A
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.)
Firth Cleveland Ltd
Original Assignee
Firth Cleveland 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 Firth Cleveland Ltd filed Critical Firth Cleveland Ltd
Publication of GB876612A publication Critical patent/GB876612A/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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type

Landscapes

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

Abstract

876,612. Controlling boundary layer flow. FIRTH CLEVELAND Ltd. July 2, 1957 [Dec. 20, 1956(2) ; Dec. 24, 1956], No. 44292/60. Divided out of 876,611. Class 4. [Also in Group XXVI] In a fan or pump in which fluid flows transversely through a bladed impeller 1, Fig. 3, the flow being guided by a stationary aerofoil blade 45, the blade 45 is hollow and in communication with fluid at ambient pressure. The low pressure in the region 47 sucks this fluid from the blade 45 through tangentially directed apertures 46, whereby boundary layer separation is prevented. In a modification in which the single blade 45 is replaced by several guide blades as shown in Fig. 5, the guide blades are of refractory material and are notched at 63 to receive a spirally-wound coil of wire 62. The spacing between the turns of the coil is of the same order of magnitude as the diameter of the wire. The coil tends to promote turbulence and thereby reduces the tendency towards flowseparation at the low pressure side of each impeller blade. An electric current can be passed through the coil to heat the gas or liquid for the purpose of varying the Reynolds number and hence the tendency towards turbulence. Specifications 876,615 and 876,621 also are referred to.
GB44292/60A 1956-07-07 1957-07-02 Improvements relating to machines for inducing flow of fluid, for example, blowers Expired GB876612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE876612X 1956-07-07

Publications (1)

Publication Number Publication Date
GB876612A true GB876612A (en) 1961-09-06

Family

ID=6817757

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44292/60A Expired GB876612A (en) 1956-07-07 1957-07-02 Improvements relating to machines for inducing flow of fluid, for example, blowers

Country Status (1)

Country Link
GB (1) GB876612A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144203A (en) * 1961-03-23 1964-08-11 Helmbold Theodor Transverse flow type blowers
US3322334A (en) * 1964-07-14 1967-05-30 Univ California Radial-flow molecular pump
EP0134834A1 (en) * 1983-09-20 1985-03-27 Heidolph-Elektro GmbH & Co. KG Cross-flow fan

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144203A (en) * 1961-03-23 1964-08-11 Helmbold Theodor Transverse flow type blowers
US3322334A (en) * 1964-07-14 1967-05-30 Univ California Radial-flow molecular pump
EP0134834A1 (en) * 1983-09-20 1985-03-27 Heidolph-Elektro GmbH & Co. KG Cross-flow fan

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