JPS622302Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to power systems, and more particularly to systems employing a DC electric motor and pump assembly associated with a hydraulic fluid supply and rotary hydraulic motor. Rotary hydraulic motors have a special housing, rotor and gear assembly associated with a supply reservoir for circulating fluid to produce an output torque on the drive shaft combined with an electrical assembly that supplies electrical power to the DC motor. Contains.

2. Description of the Related Art Hydraulic motors or turbines used as power devices are conventionally known. These hydraulic motors or turbines are disclosed in US Pat. No. 1,068,596, US Pat. No. 1,448,893 and US Pat. No. 3,828,880. However, although these patents disclose the basic concept of impinging fluid on blades or pockets around the rotor in a hydraulic motor or turbine, they do not maintain close contact between the rotor pockets and the housing (stator). , the structure is not designed to prevent pressure drop due to leakage. For this reason, hydraulic pressure was not used efficiently.

It is therefore an object of the present invention to provide a rotor housing with an injector block, the injector block having one surface that coincides with the periphery of the rotor so as to come into intimate contact with the rotor, and the rotor housing being pressurized. The object of the present invention is to provide such a power plant that is equipped with a discharge orifice for discharging oil onto the rotor.

As described above, in the configuration of the present invention, the injector block of the rotor housing and the rotor are brought into close contact with each other, thereby preventing a drop in the pressure of the hydraulic oil due to leakage, and making it possible to use the oil pressure efficiently.

Next, the present invention will be explained with reference to the drawings. The power plant 10 of the present invention includes a motor and pump assembly 12 that provides pressurized hydraulic fluid to the power plant 10 and an electrical assembly 14 that provides electrical power to the motor and pump assembly 12.

Power plant 10 includes a stationary housing or casing 16 that includes a central circulation section 18 and a pair of side plates 20 secured together by bolts 22.
, a suitable gasket seals the interior of the casing or housing and the circular rotor 2
6 is provided to form a hollow chamber 24 in which is arranged. The circular rotor 26 is supported by a shaft 28 that connects the circular rotor 26 with a flange-type coupling 30.
connected by. The shaft 28 is the side plate 2
It is pivoted in a suitable bearing 32 provided at 0. A gear casing 34 is provided on each side of the housing 16 and includes a hollow internal cavity 36 that houses a pinion gear 38 on the shaft 28 and a driven or bull gear 40 on the drive shaft 42 . is journalled in suitable bearings 44 supported by gear casing 34. Shaft 42 is provided with a pulley, gear or other mechanism 46 by which output torque from the power plant is used to drive a desired device (eg, hydraulic pump, compressor, etc.). Shaft 42 may be provided with a flyhole and may be coupled to a transmission or other mechanical device to facilitate use of the power output.

The rotor 26 has a pair of peripheral edge recesses forming a peripheral shoulder 48 and a plurality of circumferentially spaced pockets 50 having a generally streamlined shape and a leading edge abutment wall 52 parallel to the radius of the rotor.
including. The rear end portion of the pocket tapers upwardly toward the periphery of the rotor, and the transverse dimension of the pocket tapers toward the point of contact with the periphery of the rotor and gradually curves inwardly, thereby A plurality of slightly spaced circumferentially arranged pockets are provided around the periphery of the rotor.

The housing 16 includes an injector block 5 housed in a recess 56 inside the central section 18 of the housing, as shown in FIGS.
4 is provided. The injector block is located in the lower quadrant of the housing below the shaft as shown in FIG. The inner surface of the injector block 54 is provided with an arcuate groove 58 formed by a pair of arcuate ribs or side edge portions 60, which surround the rotor 26 as shown in FIG. They match and engage, ie, the groove 58 receives the portion of the rotor having the pocket 50, the rib 60 is received in the shoulder 48, and the injector block more or less sealingly engages the periphery of the rotor. The injector block also has a downwardly directed discharge orifice or passageway 62 in communication with the groove 58 near its lower edge, so that when the abutment surface 52 of each pocket passes through the discharge end of the orifice 62. , orifice or passage 6
2 is approximately perpendicular to the contact surface. A central portion of the block is provided with a threaded passageway 64 communicating with a discharge orifice 62 and housing an inlet conduit 66;
The inlet conduit 66 has a shoulder that is connected to the central portion 18 of the housing 16.
locks the injector block in place when it engages the exterior of the injector block to hold the injector block in place.

The lower part of the central annular member 18 is provided with a downwardly opening discharge area 68 that communicates with the upper end portion of a tank or reservoir 70 through which the tank receives a quantity of circulating fluid discharged from the rotor. accommodate. The circulating fluid that tends to adhere to the area around the rotor is removed by the wiper 72 as shown in FIG.
and 74 from its surroundings. The wiper 72 has an arcuately curved surface 76 that deflects the circulating fluid downwardly through the discharge opening 68, and the wiper 74 has a smaller, shorter arcuate surface that directs the circulating fluid downwardly through a passageway 80 that communicates with the tank 70. It is equipped with 78. Wipers 72 and 74 match the shape of the rotor and are made of a plastic material with anti-wear properties such as "Teflon" or the like. Wiper 72 is secured in place by a suitable bonding agent such as an epoxy resin. Note that a dowel 82 may also be used.

The tank 70 has a top plate 8 fixed to the housing 16.
4, the tank may be hermetically secured by a peripheral O-ring meal 86 and a suitable over-center fastener device 88 to allow separation of the tank when repair or cleaning is desired. The tank 70 is also provided with an upright buttful 90 having holes 92, the holes 92 being
If the power plant is installed on some types of vehicles,
Eliminates possible excessive displacements, but allows the hydraulic fluid to find its own level. tank 7
0 is also provided with a suction or suction pipe 94, which is fitted with a screen 98 adjacent to the bottom of the tank for suction of circulating fluid through a conduit 100 communicating with the inlet or suction side 102 of the pump 104. A suction adapter 96 is provided. Pump 104 connects pipe 6 through conduit 108.
6 and a discharge orifice 62 such that hydraulic oil passes from tank 70 through pump 104 and impinges on pocket 50 in the turbine.
, and then back to tank 70 by gravity. The rotor 26 is driven counterclockwise as shown in FIG. pump 1
04 is driven by a DC motor 110 which is combined with pump 104 to form a motor pump assembly 12. pump 10
The release characteristics of 4 are controlled by a bypass line 112 from pump 104 back to suction line 94 in tank 70. Control valve 1 on the bypass line
14 is provided and the control valve has a handle 116 or suitable control device to vary the flow rate from the pump to the bypass so that the output (discharge) characteristics of the pump are controlled. Pump 104 is any suitable positive displacement pump, such as a gear pump, vane pump, etc., having the required volume and pressure characteristics depending on the dimensional characteristics of the power plant and the output therefrom.

In a preferred embodiment of the invention, a rotor diameter of 8 inches is used, the housing is correspondingly sized, and the pump is driven by a 24 volt DC motor and has a 1500 psi discharge capacity, thereby producing a 1/2 inch
A rotor having a thickness of 1/4" is driven at a speed of 8500 rpm, but the dimensions and rotational characteristics of the power unit can be varied according to the requirements for a particular installation. The hydraulic fluid used can be any type of fluid having lubricating properties such as transmission fluid, light duty lubricating oil, etc., and all of the rotating parts can be provided with suitable bearings of any desired type having the required lubricating properties.

Electrical assembly 14 includes three storage batteries 118, 120 and 122 provided with a generator 124 driven from a power pulley 46 and a suitable voltage regulator 126 for charging the batteries in a conventional and well known manner. There is. The battery is connected to a pair of inverters 128 and 130 as shown in FIG.
is connected to the terminal.

The outputs from the two inverters 128 and 130 are connected to a converter 132 whose two output terminals are connected to the terminals of a pair of batteries 134 and 136. The negative terminal of the converter is connected to the positive terminal of battery 134;
The positive terminal of converter 132 is connected to the negative terminal of battery 136. The negative terminal of battery 134 is connected to the negative terminal of the DC motor, and the positive terminal of battery 136 is connected to the positive terminal of DC motor 110.

In the embodiment shown in FIG.
10' is used, and in this arrangement three batteries 138, 140 and 142 are connected to a pair of inverters 144 and 146, and a generator 148 is used to charge the batteries; 150 may be used, and the charger 150 is plugged into an AC power source or connected to an AC generator 152. Either a generator 148 or an alternating current generator 152 is connected to output shaft pulley 46 .

FIG. 8 shows a more simplified form of the electrical arrangement in which motor 110 is a DC motor connected to a pair of batteries 154 and 156, which in turn are connected to converter 158. Converter 158 is connected to an alternating current generator 160 that is plugged into an alternating current power source or is similar to generator 152 and is similarly driven. Appropriate switch controls are provided to connect the converter and battery and to connect the batteries to each other.

In the arrangement shown in FIG.
and 130 provide a 115 volt input to converter 132 using 12 volts and 25 amps from batteries, while batteries 134 and 136, acting as shock absorbers, receive 28 volts (DC) and 80 amps. Motor 110 is a 24 volt, 52 amp motor. The generator is 12 volts and 40 amps and is energized by the motor or power plant 10 to keep the battery charged and provide power to the motor.

In each embodiment of the present invention, the DC drive motor 1
10 or the switch 111 connecting the AC drive motor 110' to a power source, the pump is activated, thereby activating the motor to provide power output. The output continues to operate as long as the motor is connected to a power source. In this case, the generator recharges the battery and maintains operation for an extended period of time. This is believed to be due to the use of inverters and converters. The inverter converts DC power from the battery to AC power, and the converter converts AC power to DC power. Inverters, converters, batteries, generators, voltage regulators and switches are commercially standard conventional electrical components. When the battery is discharged, it is charged by being connected to a power source, such as a household electric current. A suitable charging device can also be used to recharge the battery as needed.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the power plant of the present invention with the electrical equipment and motor/pump unit removed. FIG. 2 is a cross-sectional view of the housing, part of the rotor and the tank, schematically showing the pump and electrical assembly. FIG. 3 is a vertical sectional view of the power plant. FIG. 4 is a partially enlarged sectional view of the injector block, rotor, and housing. FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. 4. Figure 6 shows
FIG. 3 is a perspective view of the injector block. Figure 7 shows
FIG. 3 shows a schematic diagram of a motor pump unit and a second embodiment of an electrical arrangement for supplying power to a DC motor; FIG. 8 is a schematic diagram similar to FIG. 7 showing another embodiment of the electrical arrangement. DESCRIPTION OF SYMBOLS 10... Power device, 12... Motor pump assembly, 14... Electrical assembly, 16... Casing.

Claims (1)

[Scope of utility model registration request] A power device comprising: a housing having a circular chamber therein; and a rotor pivotally supported within the housing, having a circular shape and having a plurality of pockets spaced apart around the periphery of the rotor. The housing has a hydraulic oil inlet for applying hydraulic oil to the rotor, and a discharge opening at the bottom for discharging the hydraulic oil by gravity after the rotor is rotated by the hydraulic oil, and is disposed below the housing. a storage tank for hydraulic oil containing hydraulic oil from the housing; an inlet communicating with the tank; and a discharge opening communicating with an inlet of the housing for circulating hydraulic oil from the tank into the housing under pressure. and, the pump having an electric motor connected to the pump, further including an electrical assembly for providing electrical power to the pump motor, and the rotor having a power unit configured to use rotational output from the rotor. a drive device extending externally of the housing connected to the housing, the housing including an injector block having an inner surface in sealing engagement with the periphery of the rotor, the injector block including a discharge orifice communicating with the pump;
The rotor has a peripheral edge shoulder, the injector block has a shoulder, and the injector block has spaced apart ribs that engage the shoulder and a central groove that accommodates the portion of the rotor between the shoulders. said pocket in the rotor is generally tapered in shape and has an abutment wall at its distal end disposed substantially perpendicular to the discharge orifice as the pocket passes through the discharge orifice; The injector block is characterized by being positioned below the horizontal center of the rotor so as to impart a torque to the rotor as the hydraulic oil is discharged into the pocket through the discharge orifice at an angle to the radius of the rotor intersecting the pocket. A power plant that uses