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Publication numberUS3476051 A
Publication typeGrant
Publication dateNov 4, 1969
Filing dateDec 19, 1967
Priority dateDec 19, 1967
Publication numberUS 3476051 A, US 3476051A, US-A-3476051, US3476051 A, US3476051A
InventorsSkinner Robert Thomas John
Original AssigneeLucas Industries Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Liquid pumps
US 3476051 A
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Description  (OCR text may contain errors)

Nov. 4, 1969 v R. 'r. J. SKINNER 3,476,051

LIQUID PUMPS Filed Dec. 19, 1967 ATTORNEYS United States Patent US. Cl. 103-5 3 Claims ABSTRACT OF THE DISCLOSURE A liquid pump comprises a body having a pumping cavlty containing a rotor, the cavity having at least one outlet and, in an inlet plate, at least one inlet port disposed at or near the rotor periphery, the opposite side of the rotor having a channel formed by an annular piston.

This invention relates to liquid pumps of the kind comprising a body having a cavity in which is disposed a bladed rotor, the cavity having an inlet and an outlet.

The object of the invention is to provide a liquid pump of the kind referred to in a convenient form.

In accordance with the present invention a liquid pump comprises a body, having a pumping cavity and at least one outlet therefrom, a bladed rotor mounted within the cavity, an inlet plate at least in part forming one side wall of the cavity, at least one inlet port in the inlet plate, said inlet port being disposed at or near the periphery of the rotor, the opposite side wall of the cavity having means for defining a channel in the side of the cavity adjacent to the rotor periphery and extending between the position of said inlet and that of said outlet.

The invention will now be described by way of example with reference to the accompanying drawing in which;

FIGURE 1 illustrates, in cross-section, a pump constructed in accordance with the invention, and

FIGURE 2 is a developed part section, on the rotor circumference.

The pump comprises a body in which is defined a substantially cylindrical cavity 11 containing a bladed rotor 12, there being, in the wall of the cavity 11, a pair of tangentially disposed outlets 13 (only one being shown).

The rotor 12 is mounted upon a shaft 14 arranged to be driven by associated apparatus such as an engine to which the pump is intended to supply fuel, there being a bearing structure indicated generally at 15 for supporting the shaft 14 in the body 10.

Adjacent to one side of the rotor 12 and at least in part forming one side wall of the cavity, is an inlet plate 16 secured in the body 10, this inlet plate having a pair of inclined and tapering passages 17 communicating with the pumping cavity 11 through ports 18. The ports 18 are disposed at or near the periphery of the rotor 12 as illusstrated. The passages 17 are supplied with liquid to be pumped from an inlet 19 formed in a part 20 secured by bolts 21 to the body 10. Flow of liquid from the inlet 19 to the passage 17 in the inlet plate 16 takes place through a further bladed rotor 22 which is also mounted upon the shaft 14 for rotation with the rotor 12. The rotor 22 serves as a primary pump and this is a substantially conventional form of centrifugal pump, the inlet thereto being near the centre 'of rotation directly from the inlet 19, and delivery therefrom being at the outer periphery of the rotor 22 to the passages 17 in the inlet plate 16.

At the opposite side of the rotor 12 from the inlet plate 16 is provided an annular piston 23 which is movable axially with respect to the rotor 12, the crown of the piston 23 defining the base of an annular channel 24 divided into two portions by a pair of fixed abutments 25. The piston 23 is spring loaded away from the rotor by springs 3,476,051 Patented Nov. 4, 1969 mounted within the abutments 25, as seen in both figures of the drawings.

The piston 23 is however adjustable so as to define a greater or lesser depth of side channel 24. The two portions of the channel extend respectively between the position of an inlet port 18 and that of the associated outlet 13. In an alternative form, however, only one inlet port 18 and outlet 13 are provided, and one abutment 25. In this form the inlet port and outlet are at opposite sides of the abutment respectively.

Having thus described my invention what I claim as new ice and desire to secure by Letters Patent is:

, the cylindrical wall thereof, a bladed rotor mounted within the cavity, an inlet plate forming at least part of one side wall of the cavity, at least one inlet port in the inlet plate, said inlet port being disposed near the rotor periphery and spaced circumferentially from the outlet, an inlet in the body with which the inlet port communicates, a channel in the side of the cavity remote from the inlet plate, said channel being disposed adjacent to the rotor periphery and extending between the position of the inlet and that of the outlet around the cavity, abutment means defining the ends of the channel, a piston mounted in the body to form the base wall of the channel, and means resiliently supporting the piston whereby the piston is movable towards and away from the rotor to vary the volume of the channel on the operation of the pump.

2. A liquid pump comprising a body, a generally cylindrical pumping cavity defined within the body, two outlets in the body communicating with said cavity through the cylindrical wall thereof at spaced positions, a bladed rotor mounted within the cavity, an inlet plate forming at least part of one side wall of the cavity, two inlet ports in the inlet plate, said inlet ports being disposed near the rotor periphery and spaced circumferentially from the outlets respectively, an inlet in the body with which the inlet ports communicate, two channels in the side of the cavity remote from the inlet plate, said channels being disposed adjacent to the rotor periphery and extending respectively between the position of an inlet and that of an outlet around the cavity, a pair of abutments defining the ends of the channels respectively, an annular piston mounted in the body to form the base walls of the two channels, and means resiliently supporting the piston whereby the piston is movable towards and away from the rotor to vary the volumes of the channels on the operation of the pump.

3. A liquid pump as claimed in claim 1 in which the body has a further chamber between the inlet plate and the inlet in the body, and a primary centrifugal type pump impeller rotatably mounted in said further chamber, and a drive shaft connected to said impeller and to the rotor of the pump.

References Cited UNITED STATES PATENTS 916,427 3/ 1909 Fee 103-97 1,979,621 11/1934 Hollander 103-96 2,073,014 3/1937 Jennings 103-96 2,875,698 3/1959 Roth 103-105 3,002,463 10/ 1961 Lahti 103-96 3,252,421 5/1966 Luhmann 103-96 FOREIGN PATENTS 871,494 3/ 1953 Germany.

HENRY F. RADUAZO, Primary Examiner US. Cl. X.R. 103-2, 96, 97, 105

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US916427 *Nov 21, 1908Mar 30, 1909Harry A FeeTurbine pump or blower.
US1979621 *Jan 20, 1933Nov 6, 1934Aladar HollanderBalanced turbulence pump
US2073014 *Jan 19, 1934Mar 9, 1937Jennings Irving CRotary pump
US2875698 *Mar 16, 1955Mar 3, 1959 Combination centrifugal-turbine pump
US3002463 *May 21, 1959Oct 3, 1961Petter LahtiRotary pump of the liquid ring type with side channels
US3252421 *Oct 14, 1963May 24, 1966Siemen & Hinsch GmbhPumps
DE871494C *Jan 28, 1943Mar 23, 1953Siemens AgAls Ringpumpe ausgebildete trockene Gaspumpe mit einem axial neben dem Schaufelrad liegenden Ringkanal
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3973867 *Apr 9, 1975Aug 10, 1976Chien Fu LeeRadial flow type pump
US4197051 *Mar 31, 1978Apr 8, 1980The Garrett CorporationEnergy transfer machine
US4248567 *Jul 25, 1979Feb 3, 1981The Garrett CorporationEnergy transfer machine
US4261685 *Jul 25, 1979Apr 14, 1981The Garrett Corp.Energy transfer machine
US4279570 *Jul 25, 1979Jul 21, 1981The Garrett CorporationEnergy transfer machine
US4281971 *Jul 31, 1979Aug 4, 1981Abex CorporationInlet inducer-impeller for piston pump
US4456423 *Sep 24, 1982Jun 26, 1984Webasto-Werk W. Baier Gmbh & Co.Side channel blower
Classifications
U.S. Classification417/201, 417/531, 415/208.1, 417/205
International ClassificationF04D15/00, F04D1/00, F04D1/02
Cooperative ClassificationF04D1/02, F04D15/005
European ClassificationF04D15/00C6, F04D1/02