EP0537128A2 - Pumpe - Google Patents

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Info

Publication number: EP0537128A2
Authority: EP; European Patent Office
Prior art keywords: housing; drive shaft; impeller; fluid; motor
Prior art date: 1991-10-09
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

EP92850211A

Other languages

English (en)

French (fr)

Other versions

EP0537128B1 (de

EP0537128A3 (en

Inventor

Steve Ericson

Wallace W. Ericson

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.)

ERICSON SAFETY PUMP Corp

Original Assignee

ERICSON SAFETY PUMP Corp

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.)

1991-10-09

Filing date

1992-09-09

Publication date

1993-04-14

1992-09-09 Application filed by ERICSON SAFETY PUMP Corp filed Critical ERICSON SAFETY PUMP Corp

1993-04-14 Publication of EP0537128A2 publication Critical patent/EP0537128A2/de

1993-07-14 Publication of EP0537128A3 publication Critical patent/EP0537128A3/en

1996-05-22 Application granted granted Critical

1996-05-22 Publication of EP0537128B1 publication Critical patent/EP0537128B1/de

2012-09-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/162—Double suction 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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
- 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
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts

Definitions

This invention is generally directed to centrifugal pumps having rotatably driven impellers mounted within a housing so as to create a fluid flow through such housing between an inlet and an outlet therein. More particularly, the invention provides a centrifugal pump which includes an impeller that couples an engine to a drive shaft and is rotatably disposed within the housing. Opposing fluid inlets are created between the sides of the housing and the drive shaft from which fluids are directed to a fluid outlet also formed in the housing. There is additionally provided a pump, such as a bilge pump, which operates from remote areas.
U.S. Pat. No. 4,688,987 to Ericson et al discloses a centrifugal pump having a split impeller which is mounted directly to an existing drive shaft.
the inner surfaces of the hub portions of the split impeller are knurled or otherwise provided with ridges as to bite or lock the hub against the drive shaft when the two portions of the impeller are joined together.
This prior centrifugal pump is particularly adapted for use in the engine compartment or hull of a marine vessel wherein the impellers is attached for rotation with the drive shaft, such as a propeller drive shaft, and wherein the pump housing is mounted so as to be in a surrounding and spaced relationship to the impeller blades and drive shaft.
the impeller is freely rotatable in order to pump fumes or fluids through annular intake openings between the drive shaft and pump housing and deliver the same through an outlet formed in the pump housing.
a self priming centrifugal pump apparatus for use in an atmosphere subject to the build-up of hazardous gases or other fluids.
the apparatus comprises a drive shaft, an engine or motor for driving said drive shaft, a housing having front and rear walls, a peripheral side walls and, fluid inlet openings which surround the power source and provides equal pressure from both sides on an impeller.
Mounting means is provided for securing the housing so as to be in a fixed, spaced and non-contacting relationship around the drive shaft.
An impeller means which is sloped on two sides forms a coupling of the motor with the drive shaft within and in spaced relationship with the housing. The slope expedites movement of the liquid outward to the vanes. Accordingly, the impeller and housing cooperate to discharge hazardous fluids in response to the rotation of the drive shaft without any substantial generation of heat due to friction.
the housing comprises front, rear and side wall portions at least, a pair of opposing fluid inlet openings in said front and rear walls of said housing providing equal pressure from both sides on the impeller means, each of said fluid inlet openings being of a greater dimension than said first cross sectional dimension of the drive shaft.
the housing is provided with at least two sections which are divided along lines which intersect with the fluid inlet openings. Means is provided for selectively uniting the sections so as to enclose a portion of the length of the drive shaft therebetween and through each of the fluid inlet openings.
the drive shaft according to this embodiment extends through fluid inlet openings in spaced non-contacting relationship to the housing so that fluids entering the housing under equal pressure, passes around the drive shaft, along the sloped impeller to the impeller blades that propel the fluid outlet opening.
the discharge opening is formed in the side wall of the housing and includes a nozzle means for creating a channel which extends outwardly of the housing generally tangentially with respect to the side wall portions.
the housing defines a generally cylindrical chamber and the blade means of the impeller means substantially extends between the front and rear walls of the housing and outwardly into proximate relationship with the side wall portions thereof.
the walls of the housing include portions extending outwardly beyond the walls, with spacer means extending from the outwardly extending portions of the rear walls so as to space the housing from adjacent walls of the enclosure.
the sloped impeller is formed within the housing by the coupling of the motor to the drive shaft.
the impeller may be formed by the coupling of the motor to the drive shaft or it can be in the form of a blade means which couples to the motor and to the drive shaft.
the pump may be used by itself to carry a liquid from a vessel or container or can be used in combination with the drive shaft of a propeller for a boat to remove fumes.
a fluid immersible self priming discharge pump for removing a fluid such as water from a container or vessel.
the discharge pump comprises a hydraulic motor, a housing associated with the motor having at least two opposing fluid inlet openings which create substantially equal pressure on opposing sides of the impeller.
a drive shaft is within the housing and operatively connected for rotation by the motor.
An impeller means is associated with the drive shaft and rotatable within the housing so as to draw fluid under equal pressure into the housing through the inlet openings and pass it along the sloped surface so as to discharge the fluid through the outlet openings by means of the impeller blades.
a hose or nozzle is associated with the outlet opening to carry the discharge fluid away.
the means for activating the motor can be in the form of a hydraulic pump which is located at a separate area, for example, outside of the vessel or container or on another boat.
the centrifugal pump 10 of the present invention is shown as it is mounted in relationship to a propeller drive shaft 14 within the hull of an inboard motorboat 10.
the drive shaft 14 is shown in Fig. 1 as extending from the propeller 20 though a transom, to the motor or engine 18.
a suitable bearing or stuffing box 22,22′ is mounted so as to rotatably support the drive shaft 14 and pump 12.
the centrifugal pump 12 is being described for use with the propeller drive shaft of a conventional inboard motorboat 10, the pump 12 could be used in other environments.
only a single pump 12 is shown in the preferred embodiment, there may be occasions when two or more pumps would be used in the same environment such as a boat having twin screws driven by a pair parallel drive shafts.
the pump 12 is essentially constructed of an impeller 38, comprising a bladed member 38A which forms a coupling with the end coupler 16A of the engine 18 and the end coupler 38 of the drive shaft 14, and a housing 28.
the pump housing 28 can be integral or split and composed of upper and lower sections, a circular or semicircular sidewall, a front wall and generally rectangular rear wall as found in U.S. Pat. No. 4,688,987. Openings 26, 26′ are provided in the upper corners of the rear wall of the upper section and through the lower corners of the rear wall of the lower section through which mounting bolts 34 may be selectively extended.
the impeller blades 32 are constructed to substantially extend outwardly to a point in close proximity with the inner surfaces of the sidewalls. Additionally, the width of the blades 32 is substantially equal to but slightly less than the distance between the front and rear walls.
the design of the impeller 38 and pump housing 28 is such that upon rotation of the drive shaft 14, the impeller 38 will simultaneously be rotated to thereby draw air, fumes, liquids or other fluids inwardly through the opposing inlets 26, 26′. Thereafter, the fluids more along the sloped surface of the impeller 38 and are discharged under pressure through the passageway in the outlet nozzle 23 and through the exhaust hose 24 or similar conduit to a point remote from the pump.
the impeller When the engine is activated to rotate the drive shaft, the impeller rotates within the pump housing thereby drawing fluids including liquids and gases through the inlet ports and thereafter discharging the fluids under pressure through the outlet nozzle.
the centrifugal pump of the present invention will automatically function to discharge any hazardous gaseous or fluid buildup or generated due to friction and thus the pump is safe for use in environments where ignitable or combustible fluids or gases are encountered.
the impeller member 38A is shown in Fig. 3 as being a separate and single intermediate bladed member 38A having a series of steps 31 which are in mating engagement with the end member 14A of the drive shaft 14 on one side and the steps 31A of the end member 16A of the shaft 16 of the engine 18, the bladed impeller member 38A can also be integral with either end member 14A or end member 16A. Therefore, there can be a coupling to both sides of the impeller 38 within the housing or one side.
Fig. 4 shows the sloped coupled impeller 38 which is held together by bolts 34 or any other fastening member.
the slope expedites movement of the liquid from the center of the impeller to the blades 32 where it is rapidly discharged through the outlet.
a 30 to 45° slope on the impeller 38 is generally suitable for moving the liquid to the blades 32.
a fluid immersible pump 60 which can be used as a bilge pump that can be operated from a remove area, for example, another boat which provides a source of power.
Pump 60 comprises a pump housing 61 in which an impeller 67 is mounted for rotation by a drive shaft 67.
the drive shaft 68 is operatively connected to a hydraulic motor 62 that it is operated by a hydraulic pump (not shown) through hydraulic lines 65,65′.
the housing 61 is provided with two or more fluid intake openings 63, 63′ and a discharge opening 71 to which there is attached a discharge hose or nozzle 64.
the water enters so that there is equal pressure from both sides on the impeller 67 whereby the pump is self priming.
the housing comprises front, rear and side wall portions. Fluid openings 63′ are provided on one side of the impeller 67 and a fluid opening 63 is provided on the other side of the impeller 67 so as to create equal pressure and to be self priming.
the discharge opening 71 can be tangential as shown in Fig. 2, but advantageously it is horizontally aligned with the impeller 67 as seen in Fig. 5.
the housing 61 may have a stand such as foot 70 and 70′.
the interior of the housing 61 may contain a screen 72 to prevent intake of large objects which may damage the impeller 67.
a knife assembly 69 may be mounted on the drive shaft 63 to shred or break large particles or unwanted obstructions which are drawn into the pump 60.
the motor 62 rotates the impeller 67 which draws a fluid, for example, water, through the inlets 63, 63′ and into pump 60 that it is carried outwardly along the sloped impeller surface and propelled by the impeller blades through the discharge hose 64.
the hydraulic lines 65 and 65′ may be connected to a hydraulic pump on a vessel which is remote from the area of operation.
the construction of the impeller of the bilge pump may be in accordance with the impeller shown in Fig. 1 or as described in the aforementioned patent No. 4,688,987, which is herein incorporated by reference.
a typical pump having a water discharge capacity to 15 gallons per second is provided with an 8 inch impeller having a 30° slope, a housing with a diameter of about 101 ⁇ 2 inches, a width of about 33 ⁇ 4 inches.
the NPT discharge is about 3 inches and the solid handling capacity is to about 7 ⁇ 8 inch. No seals are required.
the sloped impeller is about 26 inches in diameter and is provided with impeller blades or paddles of about 5 inches in width.
the pump of the invention does not require great precision in manufacture therefore it can be formed from metals such as aluminum, bronze, etc., or rigid plastics such as RYTON.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Fluid-Driven Valves (AREA)
Eye Examination Apparatus (AREA)
Sampling And Sample Adjustment (AREA)

EP92850211A 1991-10-09 1992-09-09 Pumpe Expired - Lifetime EP0537128B1 (de)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date
US861457		1986-05-09
US77351391A	1991-10-09	1991-10-09
US773513		1991-10-09
US86145792A	1992-04-01	1992-04-01

Publications (3)

Publication Number	Publication Date
EP0537128A2 true EP0537128A2 (de)	1993-04-14
EP0537128A3 EP0537128A3 (en)	1993-07-14
EP0537128B1 EP0537128B1 (de)	1996-05-22

Family

ID=27118771

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP92850211A Expired - Lifetime EP0537128B1 (de)	1991-10-09	1992-09-09	Pumpe

Country Status (11)

Country	Link
EP (1)	EP0537128B1 (de)
JP (1)	JPH05195992A (de)
AT (1)	ATE138451T1 (de)
BR (1)	BR9203887A (de)
CA (1)	CA2077582A1 (de)
DE (1)	DE69210937T2 (de)
DK (1)	DK0537128T3 (de)
ES (1)	ES2087504T3 (de)
GR (1)	GR3020052T3 (de)
IL (1)	IL103095A (de)
NO (1)	NO923869L (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE422200C (de) *	1919-12-29	1925-11-27	Paul Hariveau	Kreiselpumpe zum Foerdern und Mischen zweier Stoffe
US2215559A (en) *	1938-05-02	1940-09-24	Fred P Morgan	Irrigation pump
US3411013A (en) *	1966-04-04	1968-11-12	Roger G. Vogelsang	Marine accessory drive
GB1226229A (de) *	1968-10-18	1971-03-24
US4688987A (en) *	1985-02-22	1987-08-25	Ericson Wallace W	Split impeller centrifugal pump
US5051071A (en) *	1990-02-09	1991-09-24	Haentjens Walter D	Heat dissipating coupling for rotary shafts

1992
- 1992-09-04 CA CA002077582A patent/CA2077582A1/en not_active Abandoned
- 1992-09-09 AT AT92850211T patent/ATE138451T1/de not_active IP Right Cessation
- 1992-09-09 IL IL10309592A patent/IL103095A/en not_active IP Right Cessation
- 1992-09-09 DK DK92850211.1T patent/DK0537128T3/da active
- 1992-09-09 ES ES92850211T patent/ES2087504T3/es not_active Expired - Lifetime
- 1992-09-09 EP EP92850211A patent/EP0537128B1/de not_active Expired - Lifetime
- 1992-09-09 DE DE69210937T patent/DE69210937T2/de not_active Expired - Fee Related
- 1992-10-05 NO NO92923869A patent/NO923869L/no unknown
- 1992-10-06 BR BR929203887A patent/BR9203887A/pt not_active IP Right Cessation
- 1992-10-08 JP JP4293991A patent/JPH05195992A/ja active Pending
1996
- 1996-05-27 GR GR960401415T patent/GR3020052T3/el unknown

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE422200C (de) *	1919-12-29	1925-11-27	Paul Hariveau	Kreiselpumpe zum Foerdern und Mischen zweier Stoffe
US2215559A (en) *	1938-05-02	1940-09-24	Fred P Morgan	Irrigation pump
US3411013A (en) *	1966-04-04	1968-11-12	Roger G. Vogelsang	Marine accessory drive
GB1226229A (de) *	1968-10-18	1971-03-24
US4688987A (en) *	1985-02-22	1987-08-25	Ericson Wallace W	Split impeller centrifugal pump
US5051071A (en) *	1990-02-09	1991-09-24	Haentjens Walter D	Heat dissipating coupling for rotary shafts

Also Published As

Publication number	Publication date
IL103095A0 (en)	1993-02-21
DE69210937T2 (de)	1996-10-02
JPH05195992A (ja)	1993-08-06
IL103095A (en)	1996-11-14
ATE138451T1 (de)	1996-06-15
DE69210937D1 (de)	1996-06-27
CA2077582A1 (en)	1993-04-10
EP0537128B1 (de)	1996-05-22
BR9203887A (pt)	1993-04-27
ES2087504T3 (es)	1996-07-16
DK0537128T3 (da)	1996-10-14
GR3020052T3 (en)	1996-08-31
NO923869L (no)	1993-04-13
NO923869D0 (no)	1992-10-05
EP0537128A3 (en)	1993-07-14

Publication	Publication Date	Title
US7950974B2 (en)	2011-05-31	Weed cutter for a craft propelled by a water jet
US4459117A (en)	1984-07-10	Liquid jet propulsion
US3531214A (en)	1970-09-29	Radial-driven,multistage jet pump
JPH0520628B2 (de)	1993-03-22
US8152443B1 (en)	2012-04-10	Self-priming centrifugal pump free of mechanical seals
US5769674A (en)	1998-06-23	Jet drive for outboard motor
US4932837A (en)	1990-06-12	Centrifugal pump for liquids
US4688987A (en)	1987-08-25	Split impeller centrifugal pump
US4789299A (en)	1988-12-06	Liquid and air pump B
US4600394A (en)	1986-07-15	Marine propulsion unit
JP2002195192A (ja)	2002-07-10	ポンプ
US2722193A (en)	1955-11-01	Belt driven outboard marine motors
US20030059293A1 (en)	2003-03-27	Centrifugal pump
US6942448B1 (en)	2005-09-13	Pump
US6776674B2 (en)	2004-08-17	Axial-flow outboard jet propulsion unit
EP0537128A2 (de)	1993-04-14	Pumpe
GB2151196A (en)	1985-07-17	Water pump for marine propulsion devices
US3308764A (en)	1967-03-14	Pump and drive means therefor
US7442003B1 (en)	2008-10-28	Pump
US3217654A (en)	1965-11-16	Combination screw and centrifugal submergible pump
US3465523A (en)	1969-09-09	Hydraulic power unit
US562020A (en)	1896-06-16	Screw-propeller for ships
EP0111653A2 (de)	1984-06-27	Flüssigkeitsringpumpe
AU714811B2 (en)	2000-01-13	Water jet propulsion apparatus for ship
US20080226467A1 (en)	2008-09-18	Impeller with anti-vapor lock mechanism

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