CA2492764A1 - Internal combustion engine combination with direct camshaft driven coolant pump - Google Patents
Internal combustion engine combination with direct camshaft driven coolant pump Download PDFInfo
- Publication number
- CA2492764A1 CA2492764A1 CA002492764A CA2492764A CA2492764A1 CA 2492764 A1 CA2492764 A1 CA 2492764A1 CA 002492764 A CA002492764 A CA 002492764A CA 2492764 A CA2492764 A CA 2492764A CA 2492764 A1 CA2492764 A1 CA 2492764A1
- Authority
- CA
- Canada
- Prior art keywords
- shroud
- pump
- coolant
- impeller
- unitizer
- 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
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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A coolant pump for use with an internal combustion engine having a crankshaft and a camshaft driven by the crankshaft includes a pump housing fixedly mountable to the engine. The pump housing includes an inlet opening to receive coolant and an outlet opening to discharge coolant. An impeller shaft is operatively coupled to the camshaft so as to be rotatably driven thereby. A pump impeller is operatively mounted to the impeller shaft within the pump housing, the pump impeller rotatable to draw the coolant into the pump housing through the inlet opening and discharge the coolant at a higher pressure through the outlet opening. The pump impeller includes first and second shrouds separated by a plurality of vanes. The first and second shrouds and plurality of vanes are configured and positioned such that a resultant thrust load acting on the pump impeller and hence the impeller shaft is approximately zero. A seal assembly has a surface engaged with the plurality of axial extending projections of the pump impeller so as to maintain perpendicular alignment of the seal assembly with respect to the impeller shaft.
Claims (21)
1. A coolant pump for use with an internal combustion engine having a crankshaft and a camshaft driven by the crankshaft, said coolant pump comprising:
a pump housing fixedly mountable to the engine and including an inlet opening to receive coolant and an outlet opening to discharge coolant;
an impeller shaft operatively coupled to the camshaft so as to be rotatably driven thereby; and a pump impeller operatively. mounted to the impeller shaft within the pump housing, the pump impeller rotatable to draw the coolant into the pump housing through the inlet opening and discharge the coolant at a higher pressure through the outlet opening, the pump impeller including first and second shrouds separated by a plurality of vanes, the first and second shrouds and plurality of vanes being configured and positioned such that a resultant thrust load acting on the pump impeller and hence the impeller shaft is substantially balanced.
a pump housing fixedly mountable to the engine and including an inlet opening to receive coolant and an outlet opening to discharge coolant;
an impeller shaft operatively coupled to the camshaft so as to be rotatably driven thereby; and a pump impeller operatively. mounted to the impeller shaft within the pump housing, the pump impeller rotatable to draw the coolant into the pump housing through the inlet opening and discharge the coolant at a higher pressure through the outlet opening, the pump impeller including first and second shrouds separated by a plurality of vanes, the first and second shrouds and plurality of vanes being configured and positioned such that a resultant thrust load acting on the pump impeller and hence the impeller shaft is substantially balanced.
2. The coolant pump according to claim 1, wherein the first and second shrouds are structured such that a thrust load applied to the first shroud is opposite in direction and substantially equal in magnitude to a thrust load applied to the second shroud.
3. The coolant pump according to claim 1, wherein the vanes and first and second shrouds are integrally molded as a single structure.
4. The coolant pump according to claim 1, wherein the first shroud is generally cylindrical and the second shroud is generally ring-shaped, the second shroud having an inner peripheral edge that is substantially equal in diameter to an outer peripheral edge of the first shroud; and wherein each of the plurality of vanes extends from a front face surface of the first shroud to the inner peripheral edge of the second shroud and across a rear face surface of the second shroud.
5. A coolant pump for use with an internal combustion engine having a crankshaft and a camshaft driven by the crankshaft, said coolant pump comprising:
a pump housing fixedly mountable to the engine and including an inlet opening to receive coolant and an outlet opening to discharge coolant;
an impeller shaft mounted' directly to the camshaft so as to be concentrically rotatably driven thereby;
a pump impeller operatively mounted to the impeller shaft within the pump housing and including a plurality of axial extending projections, the pump impeller rotatable to draw the coolant into the pump housing through the inlet opening and discharge the coolant at a higher pressure through the outlet opening; and a seal assembly extending between said pump impeller and said housing substantially preventing coolant from escaping from said housing, said seal assembly having a surface engaged with the plurality of axial extending projections of the pump impeller so as to maintain perpendicular alignment of the seal assembly with respect to the impeller shaft.
a pump housing fixedly mountable to the engine and including an inlet opening to receive coolant and an outlet opening to discharge coolant;
an impeller shaft mounted' directly to the camshaft so as to be concentrically rotatably driven thereby;
a pump impeller operatively mounted to the impeller shaft within the pump housing and including a plurality of axial extending projections, the pump impeller rotatable to draw the coolant into the pump housing through the inlet opening and discharge the coolant at a higher pressure through the outlet opening; and a seal assembly extending between said pump impeller and said housing substantially preventing coolant from escaping from said housing, said seal assembly having a surface engaged with the plurality of axial extending projections of the pump impeller so as to maintain perpendicular alignment of the seal assembly with respect to the impeller shaft.
6. The coolant pump according to claim 5, wherein the seal assembly includes:
a unitizer mounted on the impeller shaft for rotation therewith, the unitizer including a radially outwardly extending portion having a plurality of openings therethrough;
a mating ring providing a front face surface, the mating ring being mounted to the unitizer such that the plurality of openings in the unitizer expose portions of the front face surface therethrough; and a seal unit providing a seal and an aligning member, the seal unit being coupled with the unitizer such that the aligning member is engaged with a rear face surface of the mating ring, wherein the plurality of axial extending projections of the pump impeller extend through the openings in the radially outwardly extending portion of the unitizer and engage the portions of the face surface of the mating ring so as to align the mating ring to the impeller shaft, which aligns the aligning member engaged with the mating ring to the impeller shaft, which in turn aligns the seal unit to the impeller shaft.
a unitizer mounted on the impeller shaft for rotation therewith, the unitizer including a radially outwardly extending portion having a plurality of openings therethrough;
a mating ring providing a front face surface, the mating ring being mounted to the unitizer such that the plurality of openings in the unitizer expose portions of the front face surface therethrough; and a seal unit providing a seal and an aligning member, the seal unit being coupled with the unitizer such that the aligning member is engaged with a rear face surface of the mating ring, wherein the plurality of axial extending projections of the pump impeller extend through the openings in the radially outwardly extending portion of the unitizer and engage the portions of the face surface of the mating ring so as to align the mating ring to the impeller shaft, which aligns the aligning member engaged with the mating ring to the impeller shaft, which in turn aligns the seal unit to the impeller shaft.
7. The coolant pump according to claim 6, wherein the number of axial extending projections of the pump impeller is equal to the number of openings provided in the outwardly extending portion of the unitizer.
8. The coolant pump according to claim 6, wherein the plurality of axial extending projections are integrally molded with the pump impeller.
9. The coolant pump according to claim 6, wherein the plurality of axial extending projections are provided on a ring-shaped member, the ring-shaped member being mounted to the pump impeller.
10. The coolant pump according to claim 6, wherein the pump impeller includes three axial extending projections and the outwardly extending portion of the unitizer includes three openings.
11. The coolant pump according to claim 6, wherein the openings provided in the outwardly extending portion of the unitizer allow coolant to cool the portions of the face surface of the mating ring.
12. The coolant pump according to claim 5, wherein the pump impeller including first and second shrouds separated by a plurality of vanes, the first and second shrouds and plurality of vanes being configured and positioned such that a resultant thrust load acting on the pump impeller and hence the impeller shaft is substantially balanced.
13. The coolant pump according to claim 12, wherein the first and second shrouds are structured such that a thrust load applied to the first shroud is opposite in direction and substantially equal in magnitude to a thrust load applied to the second shroud.
14. The coolant pump according to claim 13, wherein the vanes and first and second shrouds are integrally molded as a single structure.
15. The coolant pump according to claim 13, wherein the first shroud is generally cylindrical and the second shroud is generally ring-shaped, the second shroud having an inner peripheral edge that is substantially equal in diameter to an outer peripheral edge of the first shroud, and wherein each of the plurality of vanes extends from a front face surface of the first shroud to the inner peripheral edge of the second shroud and across a rear face surface of the second shroud.
16. A pump impeller for connection with an impeller shaft of a coolant pump, said pump impeller comprising:
a first shroud; and a second shroud separated from the first shroud by a plurality of vanes, wherein the first and second shrouds and plurality of vanes being configured and positioned such that a resultant thrust load acting on the pump impeller and hence the impeller shaft is approximately zero.
a first shroud; and a second shroud separated from the first shroud by a plurality of vanes, wherein the first and second shrouds and plurality of vanes being configured and positioned such that a resultant thrust load acting on the pump impeller and hence the impeller shaft is approximately zero.
17. The pump impeller according to claim 16, wherein the first and second shrouds are structured such that a thrust load applied to the first shroud is opposite in direction and substantially equal in magnitude to a thrust load applied to the second shroud.
18. The pump impeller according to claim 16, wherein the vanes and first and second shrouds are integrally molded as a single structure.
19. The pump impeller according to claim 16, wherein the first shroud is generally cylindrical and the second shroud is generally ring-shaped, the second shroud having an inner peripheral edge that is substantially equal in diameter to an outer peripheral edge of the first shroud, and wherein each of the plurality of vanes extends from a front face surface of the first shroud to the inner peripheral edge of the second shroud and across a rear face surface of the second shroud.
20. A seal assembly for an impeller shaft of a coolant pump, said seal assembly comprising:
a unitizer mounted on the impeller shaft for rotation therewith, the unitizer including a radially outwardly extending portion having a plurality of openings therethrough;
a mating ring providing a front face surface, the mating ring being mounted to the unitizer such that the plurality of openings in the unitizer expose portions of the front face surface therethrough; and a seal unit providing a seal and an aligning member, the seal unit being coupled with the unitizer such that the aligning member is engaged with a rear face surface of the mating ring, wherein the openings, in the radially outwardly extending portion of the unitizer is capable of receiving a plurality of axial extending projections of a pump impeller to engage the portions of the face surface of the mating ring so as to align the mating ring to the impeller shaft, which aligns the aligning member engaged with the mating ring to the impeller shaft, which in turn aligns the seal unit to the impeller shaft.
a unitizer mounted on the impeller shaft for rotation therewith, the unitizer including a radially outwardly extending portion having a plurality of openings therethrough;
a mating ring providing a front face surface, the mating ring being mounted to the unitizer such that the plurality of openings in the unitizer expose portions of the front face surface therethrough; and a seal unit providing a seal and an aligning member, the seal unit being coupled with the unitizer such that the aligning member is engaged with a rear face surface of the mating ring, wherein the openings, in the radially outwardly extending portion of the unitizer is capable of receiving a plurality of axial extending projections of a pump impeller to engage the portions of the face surface of the mating ring so as to align the mating ring to the impeller shaft, which aligns the aligning member engaged with the mating ring to the impeller shaft, which in turn aligns the seal unit to the impeller shaft.
21. A seal assembly as claimed in claim 20, wherein the openings provided in the outwardly extending portion of the unitizer allow coolant flow therethrough to cool the portions, of the face surface of the mating ring.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/217,334 | 2002-08-13 | ||
| US10/217,334 US7047914B2 (en) | 2001-02-15 | 2002-08-13 | Internal combustion engine combination with direct camshaft driven coolant pump |
| US10/217,326 US6863035B2 (en) | 2001-02-15 | 2002-08-13 | Internal combustion engine combination with direct camshaft driven coolant pump |
| US10/217,326 | 2002-08-13 | ||
| PCT/CA2003/001190 WO2004015274A2 (en) | 2002-08-13 | 2003-08-08 | Internal combustion engine combination with direct camshaft drive coolant pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2492764A1 true CA2492764A1 (en) | 2004-02-19 |
| CA2492764C CA2492764C (en) | 2012-09-18 |
Family
ID=31720177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2492764A Expired - Fee Related CA2492764C (en) | 2002-08-13 | 2003-08-08 | Internal combustion engine combination with direct camshaft driven coolant pump |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2003257303A1 (en) |
| CA (1) | CA2492764C (en) |
| WO (1) | WO2004015274A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITPD20100386A1 (en) * | 2010-12-21 | 2012-06-22 | Unox Spa | FAN PERFECTED OF CENTRIFUGAL FAN, IN PARTICULAR INTENDED FOR COOKING OVENS OF THE CONVECTION TYPE AND METHOD OF MANUFACTURE OF SUCH FAN |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2641190A (en) * | 1949-11-22 | 1953-06-09 | Bendix Aviat Corp | Balanced impeller for centrifugal pumps |
| US3070026A (en) * | 1958-12-03 | 1962-12-25 | Tait Mfg Co The | Pumps |
| US3384025A (en) * | 1966-08-11 | 1968-05-21 | Sta Rite Industries | Pump construction |
| US3748066A (en) * | 1971-12-13 | 1973-07-24 | Paddle Pumps Inc | Submersible pump |
| GB1567303A (en) * | 1976-10-19 | 1980-05-14 | British Leyland Cars Ltd | Liquid cooled internal combustion engine |
| DE3611910A1 (en) * | 1986-04-09 | 1987-10-15 | Schaeffler Waelzlager Kg | IMPELLER FOR A RADIAL PUMP |
| DK172812B2 (en) * | 1995-05-24 | 2003-12-15 | Apv Fluid Handling Horsens As | Pump with at least one rotating shaft |
| DE19530195A1 (en) * | 1995-08-17 | 1997-02-20 | Tuchenhagen Otto Gmbh | Centrifugal pump impeller of radial design |
| DE10006983A1 (en) * | 2000-02-16 | 2001-08-23 | Miele & Cie | Pump impeller for a centrifugal pump, in particular for a circulation pump that can be used in dishwashers or washing machines |
-
2003
- 2003-08-08 WO PCT/CA2003/001190 patent/WO2004015274A2/en not_active Application Discontinuation
- 2003-08-08 CA CA2492764A patent/CA2492764C/en not_active Expired - Fee Related
- 2003-08-08 AU AU2003257303A patent/AU2003257303A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004015274A3 (en) | 2004-07-01 |
| AU2003257303A1 (en) | 2004-02-25 |
| CA2492764C (en) | 2012-09-18 |
| WO2004015274A2 (en) | 2004-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20190808 |