US3871790A - Arrangement for driving a fluid-circulating pump - Google Patents

Arrangement for driving a fluid-circulating pump Download PDF

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Publication number
US3871790A
US3871790A US448241A US44824174A US3871790A US 3871790 A US3871790 A US 3871790A US 448241 A US448241 A US 448241A US 44824174 A US44824174 A US 44824174A US 3871790 A US3871790 A US 3871790A
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US
United States
Prior art keywords
pump
axis
fluid
driving
tubular element
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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 - Lifetime
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US448241A
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English (en)
Inventor
Jean Rameau
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.)
Renault SAS
Regie Nationale des Usines Renault
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Renault SAS
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Publication date
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/14—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of a driving or driven pulley
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements

Definitions

  • An arrangement for driving a fluid-circulating pump includes a drive pulley which serves as means for tensioning the driving means, such as for example, a belt, associated therewith.
  • the pump is mounted so as to be pivotable about the axis of a tubular element defining a fluid orifice of the pump, such axis being offset from the axis of the pulley.
  • the adjustment of the tension of the pump drive belt is thus effected by pivoting the pump, through a limited arc, about the orifice axis whereby the pulley is pivoted about the same axis thereby tensioning the belt.
  • the assembly further includes a cover plate integrally formed with the tubular element both of which are formed of molded plastic so as to serve as gasket means, and a circular sealing element is disposed upon the tubular element so as to prevent leakage between the element and the system through which the fluid is circulated.
  • Another object of the present invention is to provide an arrangement which mounts the pump so as to be pivotable about the axis of one of its fluid circulation orifices whereby the drive pulley, the axis of which is offset from the orifice axis, is likewise pivoted through a limited are thus tensioning the driving means.
  • Still another object of the present invention is to provide an arrangement wherein a rigid tubular element defines the fluid circulating orifice, the element fitting within a corresponding orifice of the fluid-circulation system and being provided with a circular sealing element seated within an external peripheral groove thereof thus allowing the pump to pivot without deterioration of the fluid seal.
  • Yet another object of the present invention is to provide an arrangement wherein the sealing element is seated within a groove defined upon the supporting surface of the pump and located at the junction between the rigid tubular element and the pump cover plate abutted against the cylinder block in order to produce an optimal seal.
  • a further object ofthe present invention is to provide an arrangement wherein the rigid tubular element is integralwith the pump cover plate thus resulting in a solid assembly which is economical to produce and which also contributes to the fluid tightness of the assembly.
  • a still further object of the present invention is to provide an arrangement wherein the pump cover plate and tubular element abutting the cylinder block is made of molded plastic and thus serves as the pump gasket.
  • FIG. 1 is a plan view of a water pump of an internal combustion engine constructed according to the present invention and showing its cooperative parts, specifically the pulley and pulley driving means;
  • FIG. 2 is a cross-section view of the pump of FIG. 1 taken along the line ll-Il of FIG. 1;
  • FIG. 3 is a view similar to that of FIG. 2 showing however another embodiment of the present invention.
  • FIG. 1 there is shown the water pump assembly of the present invention which is secured to the engine by means of a suitable rear supporting surface.
  • the pump including a main housing body I and a drive pulley 2, only a portion of the drive belt 3 associated with pulley 2 being shown, the belt 3 also performing the function of a notched camshaft-drive belt through means of its notched surface portion disposed opposite the surface which is in contact with pulley 2.
  • the body 1 of the pump includes two arcuate, elongated apertures 4 of equal radii, both of which are disposed concentrically with the axis of the rigid tubular element 18 (see FIG. 2) which is associated with the pump outlet and is disposed within the cylindrical orifice entrance 5 to the cooling circuit which is of course disposed in ternally of the cylinder block 6.
  • Such apertures 4 are diametrically opposed with respect to each other about such axis and orifice, there also being provided suitable means, not shown, adapted to be inserted within such apertures, for fastening the pump 1 to the cylinder block 6. Consequently. as the drive pulley 2, the axis of which is offset from the common axis of the rigid tubular element 18 of the pump outlet and the orifice entrance 5 to the cooling circuit, is driven by means of the outer unnotched surface of the drive belt 3, it is then possible by pivoting the water pump about the common axis, to suitably adjust the tension within the drive belt 3, the distance between the outlet orifice and the axis of pulley 2 forming a lever arm permitting the body 1 of the pump to act as stretching means for tensioning the belt.
  • FIG. 2 there is shown the inlet cylindrical orifice 5 associated with the internal cooling circuit of the cylinder block 6 as associated with the pump body 1 and the drive pulley 2 thereof. Also disclosed within this Figure is the turbine wheel assembly coaxially arranged with respect to pulley 2 and including a turbine wheel 7 fixedly mounted upon a turbine wheel hub 8, the latter of which is rotatably mounted upon a pump shaft 12.
  • An annular pump shaft seal 9 is also disposed about shaft 12 for preventing leakage therealong, and a ball bearing 10 of the pulley assembly, as well as a retaining ring 11 are further provided in order to prevent axial shifting of the pulley assembly relative to body 1, the pump shaft 12 being formed as an'integral assembly with the pulley wheel 2 in a manner similar to that of the tubular inlet orifice 13 of the pump being molded moded with the pump body 1.
  • the cover plate 15 of the water pump which may be made, for example, of molded plastic, is provided with three centering pins 16 which fit into corresponding holes provided within three bosses 17 equidistantly disu as well as the disposition of the O-ring 22 has been posed upon and about the pump body 1 whereby the rigid tubular element 18 is able to be tightly and properly fitted within the cylindrical orifice entrance 5 of the internal cooling circuit of the cylinder block 6.
  • Element 18 is made integral with the cover plate 15 and connected therewith by means of an annular flange 19, the insertion of the tubular element into the cylinder block 6 being facilitated by means of an inlet chamfer 20 associated with the cylindrical bore 5.
  • Tube 18 is also provided with a radially inwardly extending rib 21 which serves as a reinforcement means therefor, the outer surface of tube 18 which corresponds to the axial location of rib 21 also including a circular groove which serves to retain an elastomeric O-ring 22 therewithin.
  • the water pump cover plate 15 thus centered upon the body I by means of the centering pins 16 and disposed within the cylindrical entrance bore 5 of the internal cooling circuit of the cylinder block 6 by means of the rigid tubular element 18, thus permits the realization of pivoting movement ofthe water pump assembly upon the cylinder block 6, the fastening of the pump at a particular position after suitable adjustment ofthe tension within the belt 3 being effected by means of tightening of the bolts which pass through the elongated slots 4, the sealing of the pump assembly with respect to the inlet to the cylinder block 6 being of course assured by means of the O-ring 22.
  • the cover plate 15 is made of molded plastic and forms an integral assembly along with the rigid tubular element 18, it is apparent that in addition to its low cost and ease of manufacture in large quantities by utilizing processes which mold the same under pressure, the plastic composition inherently imparts to such components advantageous sealing surface properties thereby avoiding the need for gaskets to be interposed between the pump body 1 and cover plate 15, and/or between the cover plate 15 and the cylinder block 6, thereby lowering the cost of the assembly still further.
  • FIG. 3 another embodiment of a water pump assembly, conforming to the present invention, is shown wherein the configuration of the rigid tubular element 18 integral with the pump cover plate 15,
  • the cover plate 23 is similarly provided with the centering pins 16, however the rigid tubular element 24 no longer includes the radially inwardly extending rib 21 and the constriction produced thereby which risks throttling of the flow of the cooling water, nor the external grooved seat for the sealing O-ring 22.
  • an O-ring 25 is seated within an annular groove formed within the upper surface of the cover plate 23 at a position surrounding orifice 5 so as to rest against the undersurface of cylinder block 6 at the juncture of the tube 24 with the cover plate 23, an annular rib or bead 26 being formed within the lower surface of the cover plate 23 at a location correspond ing to that of ring 25 so as to embrace the same and protrude in the axial direction into the interior of the pump body 1.
  • This embodiment while assuring optimal sealing of the cooling circuit and reinforcement "of the cover plate 23 near its juncture with tube 24, also provides a better flow pattern of cooling liquid through the pump and into the circuit than the preceding embodiment, due to the presence of a vertically disposed deflector element 27 which is axially aligned within tubular element 24 so as to divide the same into two equal halves, such component thereby serving to form a nozzle thereof while providing reinforcement therefor.
  • the fluid circulating pump of the present invention has important advantages over the prior art structures in that the arrangement for driving the fluid-circulating pump thus permits the realization, in a practical and durable manner and by simple and economical means which may be easily massproduced, of tension adjustment of the pump driving means.
  • the application of such an arrangement is not limited to the realm of water pumps for internal combustion engines as described above, but can extend to any use of a fluid-circulating pump, such as for example, pumps for the hydraulic actuation of, or for the circulation of cutting oil within, a machine tool, pumps for domestic or industrial washing machines, or the like.
  • An arrangement for driving a fluid-circulating pump comprising:
  • a pulley wheel associated with said housing and being rotatable about a first axis
  • tensionable means for driving said pulley wheel about said first axis
  • said housing having associated therewith means defining a fluid orifice the axis of which is offset and parallel to said first axis of said pulley;
  • a driving arrangement as set forth in claim 1, wherein said means defining said fluid orifice comprises a rigid tubular element which is adapted to be fitted within a corresponding orifice of a circulation system through which said fluid is to be pumped.
  • sealing element is an O-ring.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
US448241A 1973-05-14 1974-03-05 Arrangement for driving a fluid-circulating pump Expired - Lifetime US3871790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7317303A FR2230225A5 (de) 1973-05-14 1973-05-14

Publications (1)

Publication Number Publication Date
US3871790A true US3871790A (en) 1975-03-18

Family

ID=9119263

Family Applications (1)

Application Number Title Priority Date Filing Date
US448241A Expired - Lifetime US3871790A (en) 1973-05-14 1974-03-05 Arrangement for driving a fluid-circulating pump

Country Status (9)

Country Link
US (1) US3871790A (de)
BE (1) BE813953A (de)
DE (1) DE2423383C3 (de)
ES (1) ES426216A1 (de)
FR (1) FR2230225A5 (de)
GB (1) GB1456938A (de)
IT (1) IT999941B (de)
RO (1) RO64584A (de)
TR (1) TR18190A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981610A (en) * 1973-11-02 1976-09-21 Skf Industrial Trading And Development Company, B.V. Water pump
US4155333A (en) * 1977-04-07 1979-05-22 Brunswick Corporation Centrifugal water pump for internal combustion engines
US4650398A (en) * 1984-06-08 1987-03-17 Skf Gmbh Bearing unit with integrated pump
US4824324A (en) * 1987-05-01 1989-04-25 Koyo Seiko Co., Ltd. Water pump
US5026253A (en) * 1988-07-05 1991-06-25 Firma Carl Freudenberg Belt-driven water pump
DE4221463A1 (de) * 1992-05-22 1993-11-25 Wilo Gmbh Kreiselpumpen mit spiralförmigem Pumpeninnenraum
FR2761419A1 (fr) * 1997-03-26 1998-10-02 Aisin Seiki Pompe a liquide
US20030175118A1 (en) * 2002-03-15 2003-09-18 Aisin Seiki Kabushiki Kaisha Water pump
EP1188931A3 (de) * 2000-09-19 2003-11-12 Aisin Seiki Kabushiki Kaisha Wasserpumpe
US20040029668A1 (en) * 2002-08-08 2004-02-12 Tsudakoma Kogyo Kabushiki Kaisha Rotation transmitting device and textile machinery using it
US20070122294A1 (en) * 2005-11-17 2007-05-31 Weber Technology Ag Pump
FR3023869A1 (fr) * 2014-07-16 2016-01-22 Peugeot Citroen Automobiles Sa Pompe a eau avec galet tendeur integre

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825632A1 (de) * 1988-07-28 1990-02-01 Skf Gmbh Antriebsvorrichtung fuer pumpen oder dgl.
AT410574B (de) * 1998-10-22 2003-06-25 Tcg Unitech Ag Kühlwasserpumpe für eine brennkraftmaschine
AT12267U1 (de) 2010-11-09 2012-02-15 Steyr Motors Gmbh Wasserpumpe für eine verbrennungskraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1464568A (en) * 1920-03-20 1923-08-14 Packard Motor Car Co Hydrocarbon motor
US1524320A (en) * 1922-09-30 1925-01-27 S & G Mfg Company Water pump for gas engines
US1524319A (en) * 1922-09-30 1925-01-27 S & G Mfg Company Adjustable fan and pump attachment for ford cars
US3018650A (en) * 1960-06-15 1962-01-30 Gen Motors Corp Washing machine with drain pump having means to reduce the power requirements of the pump when operating at high speed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1464568A (en) * 1920-03-20 1923-08-14 Packard Motor Car Co Hydrocarbon motor
US1524320A (en) * 1922-09-30 1925-01-27 S & G Mfg Company Water pump for gas engines
US1524319A (en) * 1922-09-30 1925-01-27 S & G Mfg Company Adjustable fan and pump attachment for ford cars
US3018650A (en) * 1960-06-15 1962-01-30 Gen Motors Corp Washing machine with drain pump having means to reduce the power requirements of the pump when operating at high speed

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981610A (en) * 1973-11-02 1976-09-21 Skf Industrial Trading And Development Company, B.V. Water pump
US4155333A (en) * 1977-04-07 1979-05-22 Brunswick Corporation Centrifugal water pump for internal combustion engines
US4650398A (en) * 1984-06-08 1987-03-17 Skf Gmbh Bearing unit with integrated pump
US4824324A (en) * 1987-05-01 1989-04-25 Koyo Seiko Co., Ltd. Water pump
US5026253A (en) * 1988-07-05 1991-06-25 Firma Carl Freudenberg Belt-driven water pump
DE4221463A1 (de) * 1992-05-22 1993-11-25 Wilo Gmbh Kreiselpumpen mit spiralförmigem Pumpeninnenraum
FR2761419A1 (fr) * 1997-03-26 1998-10-02 Aisin Seiki Pompe a liquide
EP1188931A3 (de) * 2000-09-19 2003-11-12 Aisin Seiki Kabushiki Kaisha Wasserpumpe
US20030175118A1 (en) * 2002-03-15 2003-09-18 Aisin Seiki Kabushiki Kaisha Water pump
US6793459B2 (en) * 2002-03-15 2004-09-21 Aisin Seiki Kabushiki Kaisha Water pump
US20040029668A1 (en) * 2002-08-08 2004-02-12 Tsudakoma Kogyo Kabushiki Kaisha Rotation transmitting device and textile machinery using it
US20070122294A1 (en) * 2005-11-17 2007-05-31 Weber Technology Ag Pump
FR3023869A1 (fr) * 2014-07-16 2016-01-22 Peugeot Citroen Automobiles Sa Pompe a eau avec galet tendeur integre

Also Published As

Publication number Publication date
IT999941B (it) 1976-03-10
DE2423383B2 (de) 1979-02-15
BE813953A (fr) 1974-08-16
FR2230225A5 (de) 1974-12-13
ES426216A1 (es) 1976-07-01
DE2423383C3 (de) 1979-10-04
RO64584A (ro) 1980-02-15
TR18190A (tr) 1976-11-22
GB1456938A (en) 1976-12-01
DE2423383A1 (de) 1974-11-28

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