Claims
- 1. A liquid ring pump comprising:
- an annular housing;
- a rotor rotatably mounted in the housing and having a frusto-conical bore concentric with the rotor axis;
- a frusto-conical port member disposed in the bore and fixedly mounted relative to the housing, the port member including (1) a gas intake port, (2) a first gas discharge port located beyond the intake port in the direction of rotor rotation and having a closing edge including a segment which is inclined in the direction of rotor rotation from a first relatively large diameter circumference portion of the port member to a second relatively small diameter circumference portion of the port member, the first and second circumference portions being axially spaced from one another along the rotor axis, and (3) a second gas discharge port spaced from the first discharge port and located beyond the inclined closing edge segment but before the intake port in the direction of rotor rotation, the second gas discharge port including a plurality of apertures spaced from one another along at least a major portion of the length of the inclined closing edge segment.
- 2. The apparatus defined in claim 1 wherein the apertures include a plurality of longitudinal slots, the longitudinal axis of each slot being substantially parallel to the inclined closing edge portion and the slots being disposed in end-to-end relationship to one another.
- 3. The apparatus defined in claim 1 wherein the apertures include a plurality of substantially circular holes.
- 4. The apparatus defined in claim 3 wherein the holes are substantially equidistant from the inclined closing edge segment.
- 5. A liquid ring pump comprising:
- an annular housing;
- a rotor rotatably mounted in the housing and having a frusto-conical bore concentric with the rotor axis;
- a frusto-conical port member disposed in the bore and fixedly mounted relative to the housing, the port member including (1) a gas intake port, (2) a first gas discharge port located beyond the intake port in the direction of rotor rotation and having a closing edge including a segment which is inclined in the direction of rotor rotation from a first relatively large diameter circumference portion of the port member to a second relatively small diameter circumference portion of the port member, the first and second circumference portions being axially spaced from one another along the rotor axis, and (3) a second gas discharge port spaced from the first discharge port and located beyond the inclined closing edge segment but before the intake port in the direction of rotor rotation, the second gas discharge port having (a) an opening edge which is substantially parallel to the inclined closing edge segment, and (b) a closing edge having (i) a mid-portion spaced from the opening edge, and (ii) end portions on each side of the mid-portion which are inclined toward respective opposite ends of the opening edge.
Parent Case Info
This is a continuation-in-part of application Ser. No. 564,881, filed Dec. 23, 1983.
US Referenced Citations (15)
Foreign Referenced Citations (12)
Number |
Date |
Country |
0071715 |
Feb 1983 |
EPX |
258483 |
Apr 1913 |
DE2 |
949765 |
Mar 1956 |
DEX |
2731451 |
Apr 1978 |
DEX |
2704863 |
Aug 1978 |
DEX |
1249020 |
Nov 1960 |
FRX |
555428 |
Jun 1978 |
JPX |
5587385 |
Dec 1978 |
JPX |
55-5427 |
Jan 1980 |
JPX |
73493 |
Jul 1926 |
SEX |
11378 |
Jan 1905 |
GBX |
2064002A |
Jun 1981 |
GBX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
564881 |
Dec 1983 |
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