Rotary kinetic fluid motors or pumps – Motor runner motivated by reaction type jet discharge nozzle...
Patent
1989-04-17
1992-06-02
Look, Edward K.
Rotary kinetic fluid motors or pumps
Motor runner motivated by reaction type jet discharge nozzle...
415202, 4152161, F01D 132
Patent
active
051182505
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to the field of high speed compressed air motors, and in particular, compressed air motors for tools requiring rotational speeds of several tens of thousands of revolutions per minute.
It is an object of the invention to provide a compressed air motor capable of operating at very high rotational speed.
It is another object of the invention to provide a compressed air motor which can be easily manufactured and quickly assembled.
It is a further object of the invention to provide a compressed air motor which is inexpensive, lightweight, and compact.
It is still another object of the invention to provide a compressed air motor which does not require coupling and attachment components.
It is still another object of the invention to provide a compressed air motor which is highly reliable in operation.
A compressed air motor according to the invention comprises a motor shaft rotatably supported in bearings. At least one propeller disk having a central bore is fixed to the motor shaft. The at least one propeller disk defines a chamber on one side for receiving fluid under pressure. The disk further defines at least one exhaust channel extending from the chamber to the external periphery of the disk. High pressure air enters the chamber through the bore of the disk, and is exhausted as at least one air jet through the at least one exhaust channel. The compressed air motor is particularly suited for deburring and grinding tools.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a longitudinal cross-section of a compressed air motor according to the invention.
FIG. 2 is a large scale perspective view of a propeller disk of the compressed air motor, showing details of the fluid receiver.
FIG. 3 is a front view of the propeller disk.
FIG. 4 is a side cross-section view taken along the line A-A of FIG. 3.
FIG. 5 is a longitudinal cross-section view of the compressed air motor having a plurality of exhaust cages each taking a disk according to the invention.
The advantages of the invention will become more apparent from the following description when considered in conjunction with the drawings.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The pneumatic motor is made up of a very high speed rotary shaft (1) running in two bearings (2) and turned under the effect of at least one jet of air under pressure with high output coming out of at least one opening or exhaust opening radially arranged at any angle on at least one propeller disk (3) integral to the motor shaft, the said opening breaking through the external diameter of the said propeller disk. More precisely, the pneumatic motor is provided with one or several receiver cages with one or several propeller disks turned by at least one injection of fluid either liquid or gas, under pressure.
The motor comprises one propeller disk (3) provided with a central bore (3.1) so as to be mounted onto the motor shaft. The disk comprises on one side, a chamber (3.2) making up a receiver for fluid under pressure. On the periphery of the propeller disk and in its thickness, there are one or several exhaust channels (4) starting at one end (4.1) whilst communicating with the receiver and breaking through at the other end (4.2) by making up a reactive channel on all or part of the width of the propeller disk and on the external periphery of the latter by projecting the fluid into the internal chamber of the exhaust cage. The shape and profile of the exhaust and reactive channel(s) are made so as to be the most suitable for practical construction and in order to guide and orientate the fluid.
The propeller disk is mounted and fixed onto the shaft by any suitable means, particularly by bonding. Front rear flanges (5-6) arranged either side of the propeller disk are provided to laterally seal the receiver of the disk and the exhaust channel(s) of the fluid whilst leaving the reactive channel to be free. These flanges, made of any suitable materials and of desired thickness, are build up and fixed onto the side faces of the disk an
REFERENCES:
patent: 1161140 (1915-11-01), Lazarides
patent: 3707336 (1972-12-01), Theis, Jr. et al.
patent: 3708241 (1973-01-01), Theis, Jr. et al.
patent: 3748054 (1973-07-01), Eskeli
patent: 3945757 (1976-03-01), Cummens
patent: 4178125 (1979-12-01), Dauvergne
Chauquet Jacques
Sagnital Georges
Larson James A.
Look Edward K.
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