FR2444181A1 - Reversible centrifugal fan - uses async. monophase motor with fan blades not overlapping - Google Patents

Reversible centrifugal fan - uses async. monophase motor with fan blades not overlapping

Info

Publication number
FR2444181A1
FR2444181A1 FR7835353A FR7835353A FR2444181A1 FR 2444181 A1 FR2444181 A1 FR 2444181A1 FR 7835353 A FR7835353 A FR 7835353A FR 7835353 A FR7835353 A FR 7835353A FR 2444181 A1 FR2444181 A1 FR 2444181A1
Authority
FR
France
Prior art keywords
fan
async
overlapping
degrees
outputs
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
FR7835353A
Other languages
French (fr)
Other versions
FR2444181B1 (en
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.)
SERVA SOC
Original Assignee
SERVA SOC
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 SERVA SOC filed Critical SERVA SOC
Priority to FR7835353A priority Critical patent/FR2444181A1/en
Publication of FR2444181A1 publication Critical patent/FR2444181A1/en
Application granted granted Critical
Publication of FR2444181B1 publication Critical patent/FR2444181B1/fr
Granted 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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

Abstract

In the two output level centrifugal fan, the two outputs consist of a general purpose running level and a high running level to handle intermittent demand i.e. during cooking etc. Both outputs are obtained from a single fan driven from a reversible single phase asynchronous motor, i.e. the two levels are achieved by forward and reverse running of the fan. The fan is held within a 240 degree spiral (6) volume with parallel walls and has a horn input port. The fan blades do not overlap and are spaced by 0.15 x the fan outside diameter (D). The blade root angle (alpha) is between 10 and 20 degrees curving forward to an outer edge angle (beta) of between 55 and 70 degrees. The inner radius of the turbine is 2/3 that of its outer radius.
FR7835353A 1978-12-15 1978-12-15 Reversible centrifugal fan - uses async. monophase motor with fan blades not overlapping Granted FR2444181A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7835353A FR2444181A1 (en) 1978-12-15 1978-12-15 Reversible centrifugal fan - uses async. monophase motor with fan blades not overlapping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7835353A FR2444181A1 (en) 1978-12-15 1978-12-15 Reversible centrifugal fan - uses async. monophase motor with fan blades not overlapping

Publications (2)

Publication Number Publication Date
FR2444181A1 true FR2444181A1 (en) 1980-07-11
FR2444181B1 FR2444181B1 (en) 1982-10-01

Family

ID=9216178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7835353A Granted FR2444181A1 (en) 1978-12-15 1978-12-15 Reversible centrifugal fan - uses async. monophase motor with fan blades not overlapping

Country Status (1)

Country Link
FR (1) FR2444181A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529264A1 (en) * 1982-06-23 1983-12-30 Ivat Color Snc Ugo Becchio C Centrifugal pump for fluids - has circular impeller chamber greater than twice diameter of impeller
US6050772A (en) * 1995-08-28 2000-04-18 Toto Ltd. Method for designing a multiblade radial fan and a multiblade radial fan
US20100071877A1 (en) * 2008-09-19 2010-03-25 Nitin Goel Reducing accumulation of dust particles on a heat dissipating arrangement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB491977A (en) * 1937-03-31 1938-09-13 Watson Warner Pumps Ltd Improvements in and relating to centrifugal pumps
US2916997A (en) * 1956-04-09 1959-12-15 Sarl Johannes Freres Double-outlet centrifugal pump
DE1428055A1 (en) * 1963-11-18 1969-07-10 Billners Handelsaktiebolag Centrifugal blower
FR2392259A1 (en) * 1977-05-27 1978-12-22 Int Standard Electric Corp Centrifugal fan which can rotate in either direction - has hinged flap at volute outlet to control flow

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB491977A (en) * 1937-03-31 1938-09-13 Watson Warner Pumps Ltd Improvements in and relating to centrifugal pumps
US2916997A (en) * 1956-04-09 1959-12-15 Sarl Johannes Freres Double-outlet centrifugal pump
DE1428055A1 (en) * 1963-11-18 1969-07-10 Billners Handelsaktiebolag Centrifugal blower
FR2392259A1 (en) * 1977-05-27 1978-12-22 Int Standard Electric Corp Centrifugal fan which can rotate in either direction - has hinged flap at volute outlet to control flow

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529264A1 (en) * 1982-06-23 1983-12-30 Ivat Color Snc Ugo Becchio C Centrifugal pump for fluids - has circular impeller chamber greater than twice diameter of impeller
US6050772A (en) * 1995-08-28 2000-04-18 Toto Ltd. Method for designing a multiblade radial fan and a multiblade radial fan
US20100071877A1 (en) * 2008-09-19 2010-03-25 Nitin Goel Reducing accumulation of dust particles on a heat dissipating arrangement

Also Published As

Publication number Publication date
FR2444181B1 (en) 1982-10-01

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Legal Events

Date Code Title Description
ST Notification of lapse