Eccentric motor

Abstract

The eccentric motor has a motor housing with an internal cylinder space. A main shaft is concentrically aligned with a central axis of the cylindrical space. A rotary blade is rigidly fixed, and arranged radially with respect, to the main shaft. A rotor is eccentrically arranged inside the motor housing, wherein the rotational axis of the rotor is spaced at a predetermined distance of eccentricity from the central axis of the main sheath surface of the motor housing. The rotary blade and the rotor are coupled to each other through a coupling member to establish a forced mechanical connection therebetween. The coupling member is adapted to move relative to the rotary blade in a direction parallel to the longitudinal axis thereof, and also relative to the rotor in a direction perpendicular to the longitudinal axis of the rotary blade.

1 . An eccentric motor ( 10 ) comprising
 a motor housing ( 11 ) having an internal cylinder space ( 12 ) of substantially cylindrical shape,   a main shaft (F) concentrically aligned with a geometrical central axis (T 1 ) of the cylindrical space ( 12 ) of the motor housing ( 11 ), said main shaft (F) being led through at least one of the terminal cylinder lids of the motor housing ( 11 ) by means of bearing,   at least one rotary blade ( 13 ,  13 ′) rigidly fixed to the main shaft (F) and arranged radially with respect to the main shaft (F), wherein the envelop surface ( 13   a ) of the outer end portion of the rotating blade ( 13 ,  13 ′) has the same circumferential arc as that of an inner main sheath surface ( 23 ) of the motor housing ( 11 ), said envelop surface ( 13   a ) leaning against said inner main sheath surface ( 23 ) in a flexible manner,   at least one inlet port ( 31 ) and at least one outlet port ( 32 ), both formed in the motor housing ( 11 ),   a rotor ( 18 ) eccentrically arranged inside the motor housing ( 11 ), wherein the rotational axis (T 2 ) of the rotor ( 18 ) is spaced at a predetermined distance of eccentricity (X) from the geometrical central axis (T 1 ) of the main sheath surface ( 23 ) of the motor housing ( 11 ), wherein said rotor ( 18 ) is coupled to said terminal cylinder lids of the motor housing ( 11 ) by means of bearing and adapted to rotate around its rotational axis (T 2 ), and wherein within the rotor ( 18 ) a clearance of specific width (W) is formed for each of the rotary blades ( 13 ,  13 ′), said clearance being separated from the working space of the motor by a sealing and closing mechanism, and   wherein the rotor ( 18 ) or said sealing and closing mechanism is seated into the main sheath surface ( 23 ) of the motor housing ( 11 ) and aligned with the motor housing ( 11 ) along a concealed sheath surface ( 24 ) in a sealed manner,   characterized by that the at least one rotary blade ( 13 ,  13 ′) and the rotor ( 18 ) are coupled to each other through a coupling member ( 20 ) to establish a forced mechanical connection therebetween, said coupling member being adapted to move relatively to the rotary blade ( 13 ,  13 ′) in a direction parallel to the longitudinal axis (L) thereof, and also relatively to the rotor ( 18 ) in a direction perpendicular to the longitudinal axis (L) of the rotating blade ( 13 ,  13 ′).   
     
     
         2 . The eccentric motor according to  claim 1 , characterized by that the coupling member ( 20 ) is a coulisse assembly having a coulisse housing ( 16 ) and guiding elements ( 17 ) connected thereto, wherein the coulisse housing ( 16 ) is arranged to slide along the rotary blade ( 13 ,  13 ′), and the guiding elements ( 17 ) are slidably connected into respective linear guiding channels ( 34 ) of the rotor ( 18 ), said guiding channels extending perpendicularly to the longitudinal axis (L) of the rotary blade ( 13 ,  13 ′). 
     
     
         3 . The eccentric motor according to  claim 1 , characterized by that the sealing and closing assembly for closing the clearance ( 40 ) formed in the rotor ( 18 ) comprises:
 eccentric blades ( 14 ) arranged within the coulisse housing ( 16 ) with one eccentric blade adjacent to both lateral surfaces of the rotary blade ( 13 ,  13 ′), said eccentric blades being slidably guided in parallel to the longitudinal axis (L) of the rotary blade ( 13 ,  13 ′) in a slot between the coulisse housing ( 16 ) and the rotary blade ( 13 ), and   arcuate blades ( 15 ) hingedly coupled to the eccentric blades ( 14 ), said arcuate blades being slidably guided in respective arcuate channels ( 27 ) of the rotor ( 18 ).   
     
     
         4 . The eccentric motor according to  claim 1 , characterized by that the motor comprises one rotary blade ( 13 ), and the sealing and closing assembly for closing the clearance ( 40 ) formed in the rotor ( 18 ) comprises:
 eccentric blades ( 14 ) arranged in the coulisse housing ( 16 ) with one eccentric blade adjacent to both lateral surfaces of the rotary blade ( 13 ), said eccentric blades being slidably guided in parallel to the longitudinal axis (L) of the rotary blade ( 13 ) between the coulisse housing ( 16 ) and the rotary blade ( 13 ), and   arcuate blades ( 15 ) hingedly coupled to the eccentric blades ( 14 ), wherein the arcuate blades comprise guiding elements on their inner side, said guiding elements leaning against an outer surface of the housing of the rotor ( 18 ), and wherein said arcuate blades are sealingly connected to each other at a part of the rotor ( 18 ) diagonally opposite to the rotary blade ( 13 ) in such a manner that they are partly overlapped and they can move relatively to each other, and wherein said arcuate blades ( 15 ) fit to the concealed sheath surface ( 24 ) and are sealingly connected to the cylinder lids.   
     
     
         5 . The eccentric motor according to  claim 1 , characterized by that the coupling member ( 20 ) is a coulisse assembly with a coulisse housing ( 16 ) and guiding elements ( 50 ) formed on the coulisse housing ( 16 ), said guiding elements ( 50 ) protruding from the coulisse housing ( 16 ) on both sides of the at least one rotary blade ( 13 ,  13 ′), in a direction parallel to the main shaft (F), said guiding elements slidably leaning against a respective bridging element ( 51 ) of the rotor ( 18 ). 
     
     
         6 . The eccentric motor according to  claim 1 , characterized by that the sealing and closing assembly adapted for separating the working space of the motor from the clearance ( 40 ) formed in the rotor ( 18 ) for the at least one rotary blade ( 13 ,  13 ′) and the coupling member ( 20   a ) adapted for providing a forced mechanical connection between the rotary blade ( 13 ,  13 ′) and the rotor ( 18 ) are formed by a single coulisse assembly, said coulisse assembly having a longitudinal wall ( 70 ) surrounding the rotary blade ( 13 ,  13 ′) and guiding elements ( 71 ) protruding from the outer end portion of the longitudinal wall in opposite directions orthogonal to the longitudinal axis (L) of the blade ( 13 ,  13 ′), wherein the longitudinal wall ( 70 ) is sealingly and slidably arranged along the rotary blade ( 13 ,  13 ′), and wherein the guiding elements ( 71 ) are moveably connected into respective linear guiding channels ( 74 ) of the rotor ( 18 ), said guiding channels extending perpendicularly to the longitudinal axis (L) of the rotary blade ( 13 ,  13 ′). 
     
     
         7 . The eccentric motor according to  claim 2 , characterized by that the sealing and closing assembly for closing the clearance ( 40 ) formed in the rotor ( 18 ) comprises:
 eccentric blades ( 14 ) arranged within the coulisse housing ( 16 ) with one eccentric blade adjacent to both lateral surfaces of the rotary blade ( 13 ,  13 ′), said eccentric blades being slidably guided in parallel to the longitudinal axis (L) of the rotary blade ( 13 ,  13 ′) in a slot between the coulisse housing ( 16 ) and the rotary blade ( 13 ), and   arcuate blades ( 15 ) hingedly coupled to the eccentric blades ( 14 ), said arcuate blades being slidably guided in respective arcuate channels ( 27 ) of the rotor ( 18 ).   
     
     
         8 . The eccentric motor according to  claim 2 , characterized by that the motor comprises one rotary blade ( 13 ), and the sealing and closing assembly for closing the clearance ( 40 ) formed in the rotor ( 18 ) comprises:
 eccentric blades ( 14 ) arranged in the coulisse housing ( 16 ) with one eccentric blade adjacent to both lateral surfaces of the rotary blade ( 13 ), said eccentric blades being slidably guided in parallel to the longitudinal axis (L) of the rotary blade ( 13 ) between the coulisse housing ( 16 ) and the rotary blade ( 13 ), and   arcuate blades ( 15 ) hingedly coupled to the eccentric blades ( 14 ), wherein the arcuate blades comprise guiding elements on their inner side, said guiding elements leaning against an outer surface of the housing of the rotor ( 18 ), and wherein said arcuate blades are sealingly connected to each other at a part of the rotor ( 18 ) diagonally opposite to the rotary blade ( 13 ) in such a manner that they are partly overlapped and they can move relatively to each other, and wherein said arcuate blades ( 15 ) fit to the concealed sheath surface ( 24 ) and are sealingly connected to the cylinder lids.