Planetary rotary type fluid motor or engine and compressor or pump

A planetary rotary device, comprising:

• a stator including a hollow cylinder block;
• a center sun wheel drum;
• and
• a rotor, wherein the rotor includes a main shaft, planetary piston wheel fixation flanges, and a planetary piston wheel,
• wherein the planetary piston wheel fixation flanges are symmetrically fixed to the main shaft, the center sun wheel drum is disposed between the planetary piston wheel fixation flanges and rotatably fitted over the main shaft, an annular piston space is formed between an outer circular cylindrical surface of the center sun wheel drum and an inner circular cylindrical surface of the cylinder block, the planetary piston wheel is a circular cylindrical roller and in contact with the outer circular cylindrical surface of the center sun wheel drum, and the cylindrical roller is disposed in the annular piston space in a rolling manner, and both ends of a supporting shaft of the cylindrical roller are fixed to the planetary piston wheel fixation flanges, the planetary piston wheel rolls against the inner circular cylindrical surface of the cylinder block and against the outer circular cylindrical surface of the center sun wheel drum, and
• wherein the outer circular cylindrical surface of the center sun wheel drum and the inner circular cylindrical surface of the cylinder block are substantially coaxial.

A planetary rotary fluid motor or engine, comprising:

• a hollow cylinder block;
• a main shaft supported by end covers on both sides of the cylinder block;
• a seal disposed between the cylinder block and the end covers;
• a planetary wheel rotation device disposed around the main shaft to drive the main shaft to rotate, wherein the planetary wheel rotation device comprises:
• planetary piston wheels, planetary piston wheel fixation flanges, and a center sun wheel drum, the planetary piston wheel is a circular cylindrical roller and in contact with an outer circular cylindrical surface of the center sun wheel drum, and wherein both ends of the cylindrical roller are rotatably fixed to the planetary piston wheel fixation flanges;
• a groove disposed in an inner circular cylindrical surface of the cylinder block in an axial direction of the cylinder block;
• a rotary valve sheet mounted in the groove, wherein a tail end of the rotary valve sheet is fixed in the groove by a rotary valve sheet supporting spindle, the rotary valve sheet supporting spindle is disposed parallel to an axial center line of the cylinder block, and an end surface of a head of the rotary valve sheet is a circular arc surface;
• a through hole extending from a bottom surface of the groove to an outer surface of the cylinder block to serve as a power source input opening;
• and
• a through hole extending from the inner circular cylindrical surface of the cylinder block to the outer surface of the cylinder block and disposed in the cylinder block to serve as a power source discharge opening;
• and
• a seal disposed between the planetary piston wheel fixation flange and the cylinder block,
• wherein the planetary piston wheel fixation flanges are fixed to the main shaft through keys, the center sun wheel drum is rotatably fitted over the main shaft to be disposed between the planetary piston wheels and the main shaft, an annular piston space in which the planetary piston wheels rotate is formed between the outer circular cylindrical surface of the center sun wheel drum and the inner circular cylindrical surface of the cylinder block, a number of the grooves of the cylinder block is at least two, and a number of the planetary piston wheels is at least three.

A method of operating a planetary rotary fluid motor or engine comprising a hollow cylinder block;

• a main shaft supported by end covers on both sides of the cylinder block;
• a seal disposed between the cylinder block and the end covers;
• a planetary wheel rotation device disposed around the main shaft to drive the main shaft to rotate, wherein the planetary wheel rotation device comprises:
• planetary piston wheels, planetary piston wheel fixation flanges, and a center sun wheel drum, wherein the planetary piston wheel is a circular cylindrical roller and in contact with an outer circular cylindrical surface of the center sun wheel drum, and wherein both ends of the cylindrical roller are rotatably fixed to the planetary piston wheel fixation flanges;
• a groove disposed in an inner circular cylindrical surface of the cylinder block in an axial direction of the cylinder block;
• a rotary valve sheet mounted in the groove, wherein a tail end of the rotary valve sheet is fixed in the groove by a rotary valve sheet supporting spindle, the rotary valve sheet supporting spindle is disposed parallel to an axial center line of the cylinder block, and an end surface of a head of the rotary valve sheet is a circular arc surface;
• a through hole extending from a bottom surface of the groove to an outer surface of the cylinder block to serve as a power source input opening;
• and a through hole extending from the inner circular cylindrical surface of the cylinder block to the outer surface of the cylinder block and disposed in the cylinder block to serve as a power source discharge opening;
• and a seal disposed between the planetary piston wheel fixation flange and the cylinder block, wherein the planetary piston wheel fixation flanges are fixed to the main shaft through keys, the center sun wheel drum is rotatably fitted over the main shaft to be disposed between the planetary piston wheels and the main shaft, an annular piston space in which the planetary piston wheels rotate is formed between the outer circular cylindrical surface of the center sun wheel drum and the inner circular cylindrical surface of the cylinder block, a number of the grooves of the cylinder block is at least two, and a number of the planetary piston wheels is at least three, the method comprises:
• injecting a pressurized gas or liquid from the power source input opening of the cylinder block into the groove of the cylinder block;
• driving, by the gas or liquid, the rotary valve sheet to perform a downward fan-shaped swing along a side of the groove with the rotary valve sheet supporting spindle serving as a center;
• pushing the planetary piston wheel to rotate forwards by the head of the rotary valve sheet, and then rushing the pressurized gas or liquid into the annular piston space to continue to push the planetary piston wheel to rotate forwards along the annular piston space;
• pressing the gas or liquid to be discharged from the power source discharge opening by the planetary piston wheel rotating forwards, and forming a gas or liquid pressure difference between the adjacent piston spaces separated by the rotary valve sheet after the rotary valve sheet swings downwards to the center sun wheel drum;
• and pressing the rotary valve sheet to swing upwards by the planetary piston wheel during the forward rotation of the planetary piston wheel, to reset the rotary valve sheet so that the rotary valve sheet enters a next reciprocating period.

A planetary rotary compressor or pump, comprising:

• a hollow cylinder block;
• a main shaft supported by end covers on both sides of the cylinder block;
• a seal disposed between the cylinder block and the end covers;
• a planetary wheel rotation device disposed around the main shaft to be driven to rotate by the main shaft, wherein the planetary wheel rotation device comprises:
• a planetary piston wheel, planetary piston wheel fixation flanges, and a center sun wheel drum, the planetary piston wheel is a circular cylindrical roller, and wherein both ends of the cylindrical roller are rotatably fixed to the planetary piston wheel fixation flanges;
• a groove disposed in an inner circular cylindrical surface of the cylinder block in an axial direction of the cylinder block;
• a rotary valve sheet mounted in the groove, a tail end of the rotary valve sheet is fixed in the groove by a rotary valve sheet supporting spindle, the rotary valve sheet supporting spindle is disposed parallel to an axial center line of the cylinder block, and an end surface of a head of the rotary valve sheet is a circular arc surface;
• a through hole extending from a bottom surface of the groove to an outer surface of the cylinder block to serve as a pressure source output opening;
• a through hole extending from the inner circular cylindrical surface of the cylinder block to the outer surface of the cylinder block and disposed in the cylinder block to serve as a fluid input;
• a rotary valve sheet guide block disposed to snug against the cylindrical roller on a forward end of the cylindrical roller in a movement direction of the cylindrical roller;
• and
• a tension spring disposed between the rotary valve sheet and the cylinder block,
• wherein the planetary piston wheel fixation flanges are fixed to the main shaft through keys, the center sun wheel drum is fitted over the main shaft to be disposed between the planetary piston wheel and the main shaft, and an annular piston space in which the planetary piston wheel rotates is formed between an outer circular cylindrical surface of the center sun wheel drum and the inner circular cylindrical surface of the cylinder block.