Rotational clap suction/pressure device

Abstract

The present invention relates to a simple and straightforward positive displacement suction/pressure device (rotational clap suction/pressure device) for utilizing in general industrial flow machines, such as various positive displacement pumps, vacuum pumps, compressors, flow meters, and rotary internal combustion engines. The object of the present invention using a double non-uniform rotation is to provide a simple and durable mechanical device having improved efficiency, by replacing the existing linear contact between various types of rotors or between a rotor and a housing, which is a problem in existing positive displacement flow machines and rotary internal combustion engines, with a whole surface.

What is claimed is: 
     
         1 . A rotational clap suction/pressure device comprising:
 a cylindrical housing in which a suction hole a discharge hole are defined in a housing cylinder at a predetermined distance, and a housing side plate is disposed on each of both sides of the housing cylinder;   a crankshaft passing through a central portion of the housing side plate, the crankshaft being rotatably supported by the cylindrical housing;   a crankpin extending from a central portion of the crankshaft;   a first rotational piston rotatably disposed within the cylindrical housing, the first rotational piston having a shaft driving hole in a central portion thereof, a slot (a long hole) in a center thereof, and a plurality of blades on an outer circumference thereof;   a second rotational piston rotatably disposed in the cylindrical housing to face the first rotational piston, the second rotational piston having a shaft driving hole in a central portion thereof, a slot in a center thereof, and a plurality of blades on an outer circumference thereof;   a gear ring fixedly disposed along an inner circumferential surface of the housing side plate, the gear ring comprising a fixed internal gear on an inner circumferential surface thereof;   a connection tube coupled to an outer circumferential surface of the crankpin and slidably rotated together with the crankpin, the connection tube comprising a planetary external gear corresponding to the fixed internal gear on an outer circumferential surface thereof;   a connecting rod extending from the outer circumferential surface of the connection tube; and   a rotation pin disposed on an end of the connecting rod, the rotation pin being inserted into the slots of the first and second rotational pistons,   wherein, when the crankpin is rotated in a clockwise direction by rotation of the crankshaft, the planetary external gear is engaged (tooth engagement) with the fixed internal gear while being rotated, and the first and second rotational pistons are non-uniformly rotated in the same direction, i.e., in a counterclockwise direction through the connection tube, the connecting rod, and the rotation pin to suction and discharge a fluid through the suction hole and the discharge hole according to a change in volume of a suction/pressure chamber defined between an inner wall of the housing cylinder and the blades of the first and second rotational pistons.   
     
     
         2 . The rotational clap suction/pressure device of  claim 1 , wherein, when the number of blades of each of the first and second rotational pistons is N, a gear ratio between the fixed internal gear and the planetary gear is N:N−1. 
     
     
         3 . The rotational clap suction/pressure device of  claim 1 , wherein the suction and discharge holes which are defined in the housing cylinder are provided in a plurality of pairs, and a portion of the plurality of pairs of suction and discharge holes comprises an ignition plug. 
     
     
         4 . The rotational clap suction/pressure device of  claim 1 , wherein a structure for engaging the fixed internal gear with the planetary external gear is provided on only one of both sides of the fixed internal gear and the planetary external gear, and a structure for guiding a circular contact on the other one of the fixed internal gear and the planetary external gear. 
     
     
         5 . The rotational clap suction/pressure device of  claim 1 , wherein a slidably movable contact conversion ring is disposed on the slot, and the rotation pin is coupled to the contact conversion ring. 
     
     
         6 . The rotational clap suction/pressure device of  claim 1 , wherein the crankpin is bisectionally divided into two parts each having a semicircular shape in a middle sectional, and ends of the divided parts are respectively inserted into both sides of the connection tube and then are engaged with and coupled to each other. 
     
     
         7 . The rotational clap suction/pressure device of  claim 1 , wherein the crankpin is bisectionally divided into two parts, and ends of the divided parts are respectively fitted into inner tubes defined in both sides of the connection tube of which a middle portion is blocked. 
     
     
         8 . The rotational clap suction/pressure device of  claim 1 , wherein a plurality of rotational clap suction/pressure devices are connected to one same crankshaft in series. 
     
     
         9 . A rotational clap suction/pressure device comprising:
 a cylindrical housing in which a suction hole a discharge hole are defined in a housing cylinder at a predetermined distance, and a housing side plate is disposed on each of both sides of the housing cylinder;   a crankshaft passing through a central portion of the housing side plate, the crankshaft being rotatably supported by the cylindrical housing;   a crankpin extending from a central portion of the crankshaft;   a first rotational piston rotatably disposed within the cylindrical housing, the first rotational piston having a shaft driving hole in a central portion thereof, a slot (a long hole) in a center thereof, and a plurality of blades on an outer circumference thereof;   a second rotational piston rotatably disposed in the cylindrical housing to face the first rotational piston, the second rotational piston having a shaft driving hole in a central portion thereof, a slot in a center thereof, and a plurality of blades on an outer circumference thereof;   a gear ring fixedly disposed along an inner circumferential surface of the housing side plate, the gear ring comprising a fixed internal gear on an inner circumferential surface thereof;   a connection tube coupled to an outer circumferential surface of the crankpin and slidably rotated together with the crankpin, the connection tube comprising a planetary external gear corresponding to the fixed internal gear on an outer circumferential surface thereof;   connecting rods symmetrically extending from a central portion of the outer circumferential surface of the connection tube with a predetermined distance therebetween; and   rotation pins respectively disposed on ends of the connecting rods, the rotation pins being bent in directions facing each other and inserted into the slots of the first and second rotational pistons, respectively,   wherein, when the crankpins are rotated in a clockwise direction by rotation of the crankshaft, the planetary external gear is engaged (tooth engagement) with the fixed internal gear while being rotated, and the first and second rotational pistons are non-uniformly rotated in the same direction, i.e., in a counterclockwise direction through the connection tube, the connecting rods, and the rotation pins to suction and discharge a fluid through the suction hole and the discharge hole according to a change in volume of a suction/pressure chamber defined between an inner wall of the housing cylinder and the blades of the first and second rotational pistons.   
     
     
         10 . The rotational clap suction/pressure device of  claim 9 , wherein a plurality of rotational clap suction/pressure devices are connected to one same crankshaft in series. 
     
     
         11 . A rotational clap suction/pressure device comprising:
 a cylindrical housing in which a suction hole and a discharge hole are defined in a housing cylinder at a predetermined distance, and a housing front plate and a housing rear plate are disposed on each of both sides of the housing cylinder;   a first rotational piston rotatably disposed in a space part within the cylindrical housing, the first rotational piston comprising a solid shaft extending toward a driving part at a central portion thereof and a plurality of blades on an outer circumference thereof;   a second rotational piston  6161  rotatably disposed in the space part to face the first rotational piston, the second rotational piston comprising a hollow shaft extending toward the driving part at a central portion thereof and a plurality of blades on an outer circumference thereof;   a first rotational piston driving gear coupled to the solid shaft of the first rotational piston;   a second rotational piston driving gear coupled to the hollow shaft of the second rotational piston;   a first power transmission gear engaged with the first rotational piston driving gear;   a second power transmission gear engaged with the second rotational piston driving gear;   a first power transmission shaft and a first driving eccentric gear which are coupled to the first power transmission gear;   a second power transmission shaft and a second driving eccentric gear which are coupled to the second power transmission gear;   a main shaft eccentric gear engaged with the first and second driving eccentric gears; and   a main shaft coupled to the main shaft eccentric gear,   wherein, when the first and second driving eccentric gears are non-uniformly rotated opposite to each other in a counterclockwise direction by rotation of the main shaft in a clockwise direction, the first power transmission gear rotates the first rotational piston driving gear and the first rotational piston at a decelerated rate in the clockwise direction, and the second power transmission gear rotates the second rotational piston driving gear and the second rotational piston at a decelerated rate in the clockwise direction to suction and discharge a fluid through the suction hole and the discharge hole according to a change in volume of a suction/pressure chamber defined between an inner wall of the housing cylinder and the blades of the first and second rotational pistons.   
     
     
         12 . The rotational clap suction/pressure device of  claim 11 , wherein when a gear ratio of each of between the first rotational piston driving gear and the second rotational piston driving gear and between the first power transmission gear and the second power transmission gear is N:1, the number of each of the first and second rotational pistons is N. 
     
     
         13 . The rotational clap suction/pressure device of  claim 11 , wherein all or portions of the plurality of suction and discharge holes defined in the housing cylinder are replaced with suction and discharge holes defined with the same number as the plurality of suction and discharge holes in the housing rear plate instead of the housing cylinder. 
     
     
         14 . The rotational clap suction/pressure device of  claim 11 , wherein the suction and discharge holes which are defined in the housing cylinder are provided in a plurality of pairs, and a portion of the plurality of pairs of suction and discharge holes comprises an ignition plug. 
     
     
         15 . The rotational clap suction/pressure device of  claim 14 , wherein one ignition plug is provided in one suction/pressure chamber, or at least two ignition plugs are provided in the suction/pressure chamber when the suction/pressure chamber is longitudinally provided. 
     
     
         16 . The rotational clap suction/pressure device of  claim 11 , wherein each of the blades of the first and second rotational pistons has a linear shape inclined at a predetermined angle with respect to the housing front and rear plates or a curved shape. 
     
     
         17 . The rotational clap suction/pressure device of  claim 11 , wherein a plurality of rotational clap suction/pressure devices are combined with each other and connected to one shaft. 
     
     
         18 . A rotational clap suction/pressure device comprising:
 a cylindrical housing in which a suction hole and a discharge hole are defined in a housing cylinder at a predetermined distance, and housing side plates are disposed on each of both sides of the housing cylinder;   a fixing gear respectively extending from a central portion of each of the housing side plates, the fixing gear being integrated with each of the housing side plate;   a first rotational piston rotatably disposed in a space part within the cylindrical housing, the first rotational piston comprising a crankshaft driving hole in a central portion thereof, a slot hole in a middle portion thereof, and a plurality of blades on an outer circumference thereof;   a second rotational piston rotatably disposed in the space part to face the first rotational piston, the second rotational piston comprising a crankshaft driving hole in a central portion thereof, a slot hole in a middle portion thereof, and a plurality of blades on an outer circumference thereof;   a crankshaft passing through central portions of the housing side plates, the crankshaft being rotatably supported by the cylindrical housing;   a crank arm integrated with a central portion of the crankshaft;   a crankpin integrated with the crank arm;   a planetary gear inserted into and rotatably coupled to the crankpin, the planetary gear being circumscribed and engaged with the fixing gear; and   a rotation pin extending and integrated with the planetary gear, the rotation pin being inserted into the slot hole of each of the rotational pistons,   wherein, when the planetary gear is circumscribed on the fixed gear and rotated by the rotation of the crank shaft in a clockwise direction, the rotation pin is rotated in a epicycloid curve shape to non-uniformly oppositely rotate the first and second rotational pistons in the clockwise direction to suction and discharge a fluid through the suction hole and the discharge hole according to a change in volume of a suction/pressure chamber defined between an inner wall of the housing cylinder and the blades of the first and second rotational pistons.   
     
     
         19 . The rotational clap suction/pressure device of  claim 18 , wherein, when a gear ratio between the fixed gear and the planetary gear is N:1, the number of each of the first and second rotational pistons is N. 
     
     
         20 . The rotational clap suction/pressure device of  claim 18 , wherein the fixed gear has an oval shape, and the planetary gear is eccentric. 
     
     
         21 . The rotational clap suction/pressure device of  claim 18 , wherein the plurality of suction and discharge holes defined in the housing cylinder are replaced with suction and discharge holes defined with the same number as the plurality of suction and discharge holes in the housing rear plate instead of the housing cylinder. 
     
     
         22 . The rotational clap suction/pressure device of  claim 18 , wherein the suction and discharge holes which are defined in the housing cylinder are provided in a plurality of pairs, and a portion of the plurality of pairs of suction and discharge holes comprises an ignition plug. 
     
     
         23 . The rotational clap suction/pressure device of  claim 22 , wherein one ignition plug is provided in one suction/pressure chamber, or at least two ignition plugs are provided in the suction/pressure chamber when the suction/pressure chamber is longitudinally provided. 
     
     
         24 . The rotational clap suction/pressure device of  claim 18 , wherein each of the blades of the first and second rotational pistons has a linear shape inclined at a predetermined angle with respect to the housing side plate or a curved shape. 
     
     
         25 . The rotational clap suction/pressure device of  claim 18 , wherein a slidably movable contact conversion ring is disposed on the slot hole, and the rotation pin is coupled to the contact conversion ring. 
     
     
         26 . The rotational clap suction/pressure device of  claim 25 , wherein a roller instead of the contact conversion ring is disposed on the slot hole, and the rotation pin is coupled to the roller. 
     
     
         27 . The rotational clap suction/pressure device of  claim 18 , wherein the crank arm is separated into two crank arms for respectively operating the first and second rotational pistons at a predetermined distance on the crankshaft. 
     
     
         28 . The rotational clap suction/pressure device of  claim 18 , wherein a plurality of rotational clap suction/pressure devices are connected to one same crankshaft in series.