JP2006132534A - Rotary fluid prime mover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary fluid prime mover that supports a rotor having a fixed cylindrical casing, and having an output shaft that is rotatable within the casing and extends coaxially. <P>SOLUTION: The rotor of a fluid prime mover includes a piston chamber, and a piston 6 that is reciprocatable within the piston chamber. The piston rod of each piston 6 is coupled to a crankshaft 5 coupled to the rotor, and rotates together with the crankshaft 5. The casing has an inlet and an outlet communicating with the piston chamber during the rotation of the rotor, and receives a compressive fluid via the inlet, and discharges it from the outlet. The rotation of the crankshaft 5 and the output shaft 3 is synchronized by a drive train, and the gear ratio of a ring-shaped gear 23 to the pinion of the crankshaft 5 is preferably made to be twice as high as the number of the pistons of each rotor block. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates generally to fluid machines, and more specifically to a rotary fluid primer of the type that includes a reciprocating piston that rotates about a rotational axis.

  For the prior invention by the applicant, please refer to the following. Patent Document 1 "Internal Rotary Engine", Patent Document 2 "Internal Rotary Engine", Patent Document 3 "Rotary Compressor or Pump", Patent Document 4 "Internal Rotary Engine", Patent Document 5 "Internal Rotary Engine" Patent Document 6 “Rotary fluid prime mover”.

Thai Patent No. 16130 Specification US Pat. No. 6,536,383 B2 US Pat. No. 6813989B2 European Patent No. 1085182B1 Japanese Patent No. 3377968 Specification Thai Patent Application No. 095096 Specification

  Various alternative embodiments of applying the present invention as a fluid prime mover are possible. The fluid prime mover has the same structure as the rotary internal combustion engine, and includes a cylindrical casing, a rotor and a crankshaft including an output shaft having an axial center in the cylindrical casing, and a piston and a piston chamber in the rotor. In each piston chamber, the pressurized fluid moves downward through the suction port and is discharged through the discharge port.

  A casing that forms a cylindrical chamber, a rotor that has an input shaft as an axis in the cylindrical chamber and that has a crankshaft with a small gear at the rear end, and a piston chamber and a piston in the rotor And a drive train provided to synchronize the rotation of the input shaft and the crankshaft.

  These and other objects and advantages of the invention will be understood by reference to the following detailed description of embodiments of the invention and the accompanying drawings.

  The illustrated fluid prime mover includes a casing formed by a pair of end plates 11, 13 and an outer cylinder 15 surrounding the cylindrical rotor by rigid assembly as shown. The outer cylinder 15 is provided with a discharge port 2 and a suction port 1 and communicates with the piston chamber.

  The cylindrical rotor includes two annular bodies 8 having cylindrical outer surfaces that match the cylindrical inner surface formed by the outer cylinder 15, and has the output shaft 3 as an axis. The rotor includes a front mounting plate 9 (and its cover) for the crankshaft and a rear mounting plate 10 for the crankshaft. Between the two annular bodies 8 of the rotor is a crankshaft intermediate mounting plate, which is provided with an output shaft arm mounting plate 43 and its cover 44 (details of the plate 43 and cover 44 are shown in FIG. 11). The output shaft 3 is rotatably attached to the casing, and penetrates the casing by sleeve bearings attached to the end plates 11 and 13 of the casing.

  The axis of the output shaft 3 and the axis of the rotor are the same (or concentric) and rotate together.

  As shown in FIG. 14, the crankshaft mounting arm 56 is fixed to the output shaft 3 and rotates integrally with the output shaft. The crankshaft mounting arm 56 includes bearing housings 53, 55 and a bearing 54. The piston chamber is fixed to the piston chamber base 27 within the annular body 8 of the rotor. Each piston chamber reaches the outer surface of the annular body 8 of its axial rotor and is surrounded by a cylindrical valve 7. In FIG. 10, the seal 42 is inserted into the rotor annular body 8, and lubricating oil leakage from the cylindrical valve 7 is prevented. The axis of each piston chamber is preferably uniformly spaced from the output shaft axis in the direction of rotor rotation. The cylindrical valve 7 is slightly movable along the axis of the piston chamber. The curved end of the valve is pressed against the cylindrical inner surface of the outer cylinder 15 of the casing by a coil spring 31 in a liquid-tight manner. As shown in FIG. 6, the coil spring 31 is seated on a piston rod base 27 and a spring bar 32 attached to the lower end of the cylindrical valve in order to make the cylindrical valve 7 immovable. The outer surface of the piston chamber base 27 is covered with a ring seal 28, thereby preventing lubricating oil leakage from the cylindrical valve 7. A key 29 with a spring is attached to each of the key grooves 30 and 34 outside the piston chamber and inside the cylindrical valve 7. As shown in FIG. 7, an opening valve 35 and a closing valve 36 are formed at the curved end of the cylindrical valve 7, and opening positions of the discharge port and the suction port are determined by the opening valve 35. The starting position for closing the inlet is determined. The piston 6 is usually cylindrical as in the conventional structure, and reciprocates within each piston chamber. A piston rod is pivotally connected to each piston 6 and is pivotally connected to a corresponding crank of the crankshaft 5 by a bearing 54. The fluid prime mover has first and second two motor blocks, each block having two pistons. The first motor block and the piston chamber base 27 are fixed to the crankshaft front mounting plate 9 and the output shaft arm mounting plate cover 44. The second motor block and piston chamber base 27 are fixed to the crankshaft rear mounting plate 10 and the output shaft arm mounting plate 43.

  In FIG. 4, there is a screw gear chamber 14 surrounding the screw gear 4 between the front end plate 13 of the casing and the front mounting plate 9 of the crankshaft. The screw gear 4 is formed at the front end of the output shaft 3 for driving the lubricating oil pump.

  A drive train is provided to synchronize the rotation of the output shaft 3 and both crankshafts 5. As shown in FIG. 5, the drive train includes an annular gear carrying cap 22 in the drive train chamber 12. The drive train chamber 12 is located between the rear end plate 11 of the casing and the rear mounting plate 10 of the crankshaft. A sleeve carrying the output shaft is formed in the center of the annular gear carrying cap 22 and one end of this sleeve is fixed to the rear end plate 11 of the casing. An annular gear 23 is fixed to the annular gear carrying cap 22. The annular gear 23 meshes with a small gear formed at the rear ends of both crankshafts 5. The drive train determines the gear ratio of the annular gear to the small gear that is appropriate for rotary fluid prime mover efficiency, preferably double the number of pistons in each motor block. For example, in a general two-piston rotary pressurizing prime mover, the gear ratio of the annular gear to the small gear is set to 4 to 1, so that when the output shaft rotates once in the clockwise direction, the crankshaft rotates four times. Similarly, the gear ratios of the 3, 4, 6, 8 piston rotary press prime movers are 6: 1, 8: 1, 12: 1 and 16: 1, respectively.

  When the output shaft 3 and the crankshaft 5 rotate synchronously, the piston 6 reciprocates in the piston chamber by the rotation of the crankshaft 5. The reciprocating motion of the piston is synchronized so that the pressurized fluid is received via the suction port 1 (suction stroke) and discharged from the discharge port 2 (discharge stroke).

  As an example, the two pistons of the motor block are illustrated by the operation sequence of the rotary pressurizing prime mover shown in FIGS. 15 and 16. Each block comprises two pistons.

  During the inflow stroke of the first motor block (positions 57, 58 and 59 in FIG. 15), the piston chambers No. 1 and No. 2 pass through the suction port while the piston is lowered into the piston chamber by the pressurized fluid. When the piston finishes its down stroke, the intake stroke ends. At the same time, the second motor block is operating on the discharge stroke (positions 60, 61, 62 in FIG. 15).

  In the discharge stroke of the first motor block (positions 63 and 64 in FIG. 16), the piston chambers 1 and 2 continue to move around the output shaft, and at the same time, the crankshaft drives and lifts the pistons 1 and 2. To drain the fluid. At the same time, the suction stroke of the second motor block is in operation (positions 65 and 66 in FIG. 16).

  Piston chambers 1 and 2 form a first motor block, and piston chambers 3 and 4 form a second piston chamber set. In order to maximize the output power, the motion of each pair of pistons must be balanced. However, the deformation of the present invention is not limited thereby. Depending on the desired capacity, it may be preferable to have a plurality of motor blocks in the rotary press prime mover. In addition, it is possible to provide a plurality of pistons and piston chambers in one motor block, and it is preferable to use at least two because of the necessity of equilibration. Furthermore, the intake stroke of each piston is approximately twice the number of pistons in each motor block, ie 6, 8, 12, 16 strokes for 3, 4, 6, 8 piston motor blocks. .

It is the schematic which shows the inlet and outlet position of the 1st block of a rotary fluid prime mover. It is the schematic of the inlet and outlet positions of the second block of the rotary fluid prime mover. It is an assembly perspective view of a rotary fluid prime mover. It is a disassembled perspective view of a rotary fluid prime mover. It is sectional drawing and the exploded view of the front end plate of a casing, a screw gear chamber, and a crankshaft front part mounting plate. It is sectional drawing and the exploded view of the rear end plate of a casing, a drive train room, and a crankshaft rear mounting plate. FIG. 3 is an exploded perspective view of a piston chamber base and a cylindrical valve, and a detailed view of a coupling spring bar and a coil spring of the cylindrical valve. It is the perspective view which shows the detail inside a cylindrical valve | bulb, and the side view of FIG. It is a rear view of a fluid prime mover. It is a front view of a fluid prime mover. It is a perspective view of a rotor annular body. It is a perspective view of a crankshaft intermediate mounting plate. It is a perspective view of a crankshaft front part mounting plate. It is a perspective view of a crankshaft rear part mounting plate. It is a perspective view of an output shaft and a crankshaft mounting arm. It is the schematic of the suction stroke of a 1st rotary motor block, and the simultaneous discharge stroke of a 2nd rotary motor block. It is the schematic of the discharge stroke of a 1st rotary motor block, and the simultaneous suction stroke of a 2nd rotary pressurization motor block.

Explanation of symbols

3 Output shaft 4 Screw gear 5 Crankshaft 6 Piston 8 Annular body 9 Crankshaft front mounting plate 10 Crankshaft rear mounting plate 11 Rear end plate 13 Front end plate 15 Outer cylinder 23 Ring gear 43 Output shaft arm mounting plate

Claims (7)

A fixed cylindrical casing;
A rotor in the casing, wherein the rotor has an output shaft that is rotatable and coaxially extends in the casing, and the rotor includes a plurality of piston chambers and pistons in the piston chambers, respectively. With the piston rod connected to the crankshaft connected to the rotor, the piston can be reciprocated along a line radially spaced from the rotation shaft of the output shaft in the chamber. The rotating rotor;
The casing for taking in pressurized fluid through the suction port and discharging from the discharge port by having a fluid suction port and a discharge port communicating with the piston chamber during rotation of the rotor;
A valve member of the piston chamber for communicating between the suction and discharge ports and the piston chamber, wherein the valve member has a cylindrical end corresponding to the cylindrical casing, so that the valve member is The valve member whose inlet and outlet are closed when closed;
A drive train for synchronizing the rotation of the crankshaft and the output shaft, wherein the gear ratio of the annular gear to the small gear is suitable for engine efficiency, preferably twice the number of pistons in each engine block Said drive trains for 4: 1, 6: 1, 8: 1, 10: 1, 12: 1 respectively for 2, 3, 4, 5, 6 piston engines;
In the piston chamber, the piston performs a synchronized reciprocating motion in which all the pistons have the same stroke position in the chamber;
A rotary fluid prime mover.   The rotary fluid prime mover according to claim 1, wherein the rotor includes a plurality of blocks each including a plurality of the pistons and the piston chambers.   The rotary fluid prime mover according to claim 2, wherein the piston chamber and the piston are arranged in a mutually opposed pair in the block.   The rotary fluid prime mover according to claim 1, further comprising a crank arm connected to the rotor, wherein the piston rod is connected to each end of the crank arm.   Each block has a mounting plate that rotatably supports one end of the crankshaft of the piston of the block and an adjacent block, and the opposite end of the crankshaft of the piston of the adjacent block can be rotated. The rotary fluid prime mover according to claim 2, further comprising an intermediate mounting plate to be supported.   The rotary fluid prime mover according to claim 5, wherein the valve casing is fixed to the mounting plate.   The rotary fluid prime mover according to claim 1, wherein each piston has a curved end corresponding to the cylindrical casing.

Images