Claims
- 1. A quick priming centrifugal pump comprising:
- an upper housing having a pump inlet and a pump outlet for fluid to be pumped by said pump, said pump inlet being generally tubular in shape and defining an axis of fluid flow, said tubular pump inlet including a bevelled end;
- a lower housing at least partially surrounding said pump inlet, said lower housing including a lower housing inlet having an axis of fluid flow transverse to the axis of fluid flow of said pump inlet, said bevelled end facing away from said lower housing inlet;
- an impeller rotatably mounted in said upper housing, said impeller including an extended hub which projects toward said pump inlet for limiting the volume of a vortex which may be formed in said pump inlet when said pump is operating; and
- at least one rib means projecting radially and inwardly from an inner tubular surface of said pump inlet for inhibiting the formation of a vortex in said pump inlet during the operation of said pump.
- 2. A quick priming centrifugal pump for use in a washing machine, said pump comprising:
- an upper housing having a pump inlet and a pump outlet for fluid to be pumped by said pump, said pump inlet being generally tubular in shape and defining an axis of fluid flow, said tubular pump inlet including a bevelled end;
- a lower housing surrounding said pump inlet, said lower housing including a lower housing inlet having an axis of fluid flow transverse to the axis of fluid flow of said pump inlet, said bevelled end of said pump inlet facing away from said lower housing inlet;
- an impeller rotatably mounted in said upper housing, said impeller including a rotatable shaft for driving said impeller and a vane secured to said shaft, said impeller including means for projecting toward said pump inlet to reduce the volume of a vortex which may be formed in said pump inlet when said pump is operating; and
- radially inwardly projecting means formed on an inner tubular surface of said pump inlet for inhibiting the formation of a vortex in said pump inlet when said pump is operating.
- 3. The pump according to claim 2 wherein said projecting means comprises a rib which projects radially inwardly toward said pump inlet.
- 4. The pump according to claim 3 wherein said rib is disposed generally axially within said pump inlet.
- 5. The pump according to claim 2 wherein said means for projecting comprises an extended impeller hub.
Parent Case Info
This is a continuation of application Ser. No. 07/635,289, filed Dec. 28, 1990, now abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (3)
Number |
Date |
Country |
387935 |
Jan 1924 |
DEX |
224316 |
Dec 1968 |
SUX |
2190430 |
Nov 1987 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
635287 |
Dec 1990 |
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