GB1213448A - Improvements relating to pumps - Google Patents

Improvements relating to pumps

Info

Publication number
GB1213448A
GB1213448A GB35178/69A GB3517869A GB1213448A GB 1213448 A GB1213448 A GB 1213448A GB 35178/69 A GB35178/69 A GB 35178/69A GB 3517869 A GB3517869 A GB 3517869A GB 1213448 A GB1213448 A GB 1213448A
Authority
GB
United Kingdom
Prior art keywords
port
tongue
zone
impeller
during reverse
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
GB35178/69A
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19681703815 external-priority patent/DE1703815C/en
Priority claimed from DE6600523U external-priority patent/DE6600523U/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1213448A publication Critical patent/GB1213448A/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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0044—Varying behaviour or the very pump by introducing a gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,213,448. Centrifugal pumps. SIEMENS A.G July 11, 1969 [July 13 1968 (2)], No.35178/69. Heading F1C. A pump comprises an impeller 1, an inlet 3 and an outlet 5 for liquid and a small port 7 which can communicate with the atmosphere and which is located within a zone 9 of the casing cover in which there will be created a positive pressure during forward running of the impeller and a negative pressure during reverse running, whereby air will be drawn into the pump during reverse rotation to prevent the pumping of liquid. The zone 9 extends from 15 degrees beyond the tongue 8 to 35 degrees ahead of it, relative to the normal direction of rotation. Within this zone, the port 7 may be located 25 degrees ahead of the tongue 8 and just within the impeller periphery, the best position being influenced by the tip curvature of the tongue. The port 7 can instead be located at the place where the volute 4 is narrowest or where the tangent to the volute wall is at the smallest angle to the radius r. A ridge (not shown) is provided adjacent the port 7 to deflect the flow into the port during forward running and away from the port during reverse running, thereby increasing the positive pressure and negative pressure respectively.
GB35178/69A 1968-07-13 1969-07-11 Improvements relating to pumps Expired GB1213448A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681703815 DE1703815C (en) 1968-07-13 Device to automatically stop the liquid pumping of a radial centrifugal pump when running backwards
DE6600523U DE6600523U (en) 1968-07-13 1968-07-13 AUTONOMOUS DISABLING OF THE FLUID PUMPING OF A CENTRIFUGAL PUMP WHEN REVERSING

Publications (1)

Publication Number Publication Date
GB1213448A true GB1213448A (en) 1970-11-25

Family

ID=25754678

Family Applications (2)

Application Number Title Priority Date Filing Date
GB35178/69A Expired GB1213448A (en) 1968-07-13 1969-07-11 Improvements relating to pumps
GB35177/69A Expired GB1217460A (en) 1968-07-13 1969-07-11 Improvements relating to pumps

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB35177/69A Expired GB1217460A (en) 1968-07-13 1969-07-11 Improvements relating to pumps

Country Status (6)

Country Link
US (1) US3659955A (en)
CH (2) CH503907A (en)
FR (1) FR2014590A1 (en)
GB (2) GB1213448A (en)
NL (1) NL6909152A (en)
SE (1) SE354689B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228831A (en) * 1989-09-07 1993-07-20 Ksb Aktiengesellschaft Sheet metal centrifugal pump casing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI464322B (en) 2010-12-14 2014-12-11 Delta Electronics Inc Centrifugal fan
CN103267018A (en) * 2013-06-03 2013-08-28 高邮市高农机械配件有限公司 Internal combustion engine cooling water pump water suction chamber runner

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783667A (en) * 1930-01-28 1930-12-02 Deming Co Centrifugal pump
US2050523A (en) * 1935-07-08 1936-08-11 Edward A Freed Fan
FR861453A (en) * 1938-11-18 1941-02-10 Masch Fabrikburckhardt A G Rotary impeller pump with liquid ring for simultaneous movement of gas and liquid
US2291138A (en) * 1939-01-05 1942-07-28 Bingham Pump Company Inc Centrifugal pump
US2566892A (en) * 1949-09-17 1951-09-04 Gen Electric Turbine type pump for hydraulic governing systems
US2808780A (en) * 1952-10-07 1957-10-08 Philips Corp Rotary pump
US3040663A (en) * 1959-12-30 1962-06-26 Gen Electric Two-way valveless pump
US3134386A (en) * 1963-01-24 1964-05-26 Gen Electric Washing machine with selectively variable washing action
US3244105A (en) * 1963-03-26 1966-04-05 Gen Motors Corp Pump for a domestic appliance
BE646852A (en) * 1963-04-23
US3259072A (en) * 1964-10-26 1966-07-05 Gen Motors Corp Rotary fuel pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228831A (en) * 1989-09-07 1993-07-20 Ksb Aktiengesellschaft Sheet metal centrifugal pump casing

Also Published As

Publication number Publication date
GB1217460A (en) 1970-12-31
CH503907A (en) 1971-02-28
CH492880A (en) 1970-06-30
SE354689B (en) 1973-03-19
DE1703815B2 (en) 1972-09-21
FR2014590A1 (en) 1970-04-17
DE1703815A1 (en) 1972-03-09
US3659955A (en) 1972-05-02
NL6909152A (en) 1970-01-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees