Pumps – Motor driven – Electric or magnetic motor
Patent
1984-12-06
1987-09-22
Croyle, Carlton R.
Pumps
Motor driven
Electric or magnetic motor
60456, F04B 2302
Patent
active
046952322
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a hydraulic powered apparatus with a central body connecting the driving motor and the pump and housing a fan and the hydraulic fluid tank.
BACKGROUND OF THE INVENTION
A known device of this type cools the pressure medium conveyed from the pump with a fan. The fan outlet passes through a heat exchanger (DE-PS No. 27 50 967).
SUMMARY OF THE INVENTION
An object of the present invention is to further develop and improve the known device.
The foregoing object is obtained by a hydraulic powered apparatus comprising a driving motor, a pump coupled to the motor by a shaft and a coupling such that the driving motor powers the pump, a hollow central body having opposite ends connected to the driving motor and the pump and surrounding the coupling, a fan mounted on the shaft and inside the central body, a heat exchanger adjacent to and receiving air from the fan outlet and a pressure medium tank. The tank is mounted within the central body, surrounds and is spaced radially from the shaft and is connected to the suction side of the pump.
According to the present invention, the pressure medium is held in a pressure medium tank fitted into the central body. The entire arrangement is such that the pressure medium tank is integrated in a favorable manner into the apparatus, and the space is properly utilized. The apparatus is far more useful than the known device, due to the inclusion of the pressure medium tank. During operation of the apparatus according to the present invention, not only is the pressure medium flowing through the heat exchanger cooled, but also the pressure medium found in the pressure medium tank is cooled. Since parts of the wall of the pressure medium tank also form the wall of the fan housing, the tank walls are continually affected by the air sucked in by the fan during operation. Additional peripheral devices can be attached to the central body.
A favorable mounting of the driving motor on the central body, so that air can be drawn in by the fan from between the driving motor and the central body, is made possible by a fastening flange on the motor attached to the central body at opposite side edges of the flange and by the fan inlet being between the flange and central body and outside the flange side edges.
A space-saving arrangement of the heat exchanger and a filter in the central body is attained by mounting the heat exchanger on top of the central body, providing a return line connector on the pump side adjacent a central body side and the heat exchanger, and mounting a reverse flow filter adjacent the other central body side.
A short line connection can be provided between the pressure medium pump on the one side and the pressure medium tank. A hydraulic device can be mounted in the central body.
Other objects, advantages and salient features of the present invention will become apparent from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a preferred embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to the drawings which form a part of this disclosure:
FIG. 1 is a side elevational view partially in section of a hydraulic powered apparatus according to the present invention;
FIG. 2 is an end elevational view of the apparatus taken in the direction A of FIG. 1; and
FIG. 3 is a top view in section of the apparatus taken along line III--III of FIG. 2.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
FIG. 1 shows an essentially quadratic, hollow central body 3 with pedestals 1 and 2. A driving motor 4 is on the left side of the central body, and a pump 5 is on the right side of the central body. The motor and pump are mounted on the central body with respective fastening flanges 6 and 7. Fastening flange 6 of driving motor 4, shown in broken lines in FIG. 2, is essentially rectangular and fastened by screws 8 on both of its opposite side edges. Fastening flange 7 of pump 5 is coupled to body 3 by at least one connecting screw. Flexible, generally
REFERENCES:
patent: 3751191 (1973-08-01), Mott
patent: 4172697 (1979-10-01), Schoen
patent: 4283167 (1981-08-01), Bassan et al.
patent: 4461341 (1984-07-01), Morrison
Croyle Carlton R.
Flutec Fluidtechinische Gerate GmbH
Olds Theodore
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