F - Mech Eng,Light,Heat,Weapons – 01 – C
Patent
F - Mech Eng,Light,Heat,Weapons
01
C
230/87
F01C 3/02 (2006.01)
Patent
CA 1152468
Abstract A machine of positive displacement type for the expansion or compression of elastic fluids, wherein torque created or applied effects directly the power shaft, bearings of the power shaft are loaded only by weights of corresponding rotary masses, sealing lubrication is not used and the structure of the machine should accountably facilitate achieving of low losses. The machine includes working spaces (5) defined by a rotary working member (1) and a surrounding body structure (4), and moving circumferentially with the working member, their main direction joining with said circumferential direction. The working spaces (5) are divided into a process space (6) and a transferring space (7) by a partition wall (15) belonging to rotary non-working reacting members (8) which are perpendicular to the working member and synchro- nized therewith and of so firm structure that they can trans- mit to the outside of the working member great forces due to a pressure difference between said spaces (6, 7). Said forces can be compensated by a programmed pressure effect onto a counter-surface (11) of the reacting member. Depending on the direction of rotation of the working member either expansion or compression of elastic fluid circulating through the machine is performed. Rotary valves (23) are preferably used for achieving a cyclic closing of the process space (6). A momentary area of the valve opening can essentially corres- pond to a momentary area of the partition wall (15). A partition wall forming part (10) of the reacting member is preferably provided with only one transition sector (77) for changing the process cycle, whence requirements as to synchro- nization are low. Light sealing members (110) are preferably used to reduce remaining loss effects due to error in synchro- nization. Clearances not depending on synchronization may be maintained small by using temperature control of respective parts. A major part of the clearances can be provided with a labyrinth seal (61, 103, 104) for reducing the speed of gas leak.
321515
Gowling Lafleur Henderson Llp
Takalo Kauko A.
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