초록 ▼

In a centrifugal separator, the rotor of which is adapted to be driven by means of a gaseous driving fluid, the rotor itself supports a ring of turbine blades extending around the rotational axis of the rotor. A stationary nozzle is adapted to direct a flow of the driving fluid towards the ring of t

In a centrifugal separator, the rotor of which is adapted to be driven by means of a gaseous driving fluid, the rotor itself supports a ring of turbine blades extending around the rotational axis of the rotor. A stationary nozzle is adapted to direct a flow of the driving fluid towards the ring of turbine members. After the driving fluid has passed between the turbine blades and has influenced them for driving of the centrifugal rotor, it enters a reversing chamber formed by a stationary reversing member. In the reversing chamber the driving fluid is caused to change its direction and is then conducted again towards the ring of turbine members in order to be utilized a second time for driving of the centrifugal rotor.

대표청구항 ▼

The invention claimed is: 1. A centrifugal separator comprises an inlet for introducing at least one of a gas and gas mixture to be cleaned from particles suspended therein, an outlet for dispensing at least one of a cleaned gas and a cleaned gas mixture, a rotor and a driving means for rotation of

The invention claimed is: 1. A centrifugal separator comprises an inlet for introducing at least one of a gas and gas mixture to be cleaned from particles suspended therein, an outlet for dispensing at least one of a cleaned gas and a cleaned gas mixture, a rotor and a driving means for rotation of the rotor about a rotational axis by means of a gaseous driving fluid, the driving means including turbine members connected with the rotor and arranged in a ring around and at some distance from the rotational axis, at least one supply member for directing said driving fluid towards the ring of turbine members in a way such that the rotor is brought into rotation about said rotational axis by gradual actuation of the turbine members by the driving fluid, and at least one reversing member adapted to receive at least part of said driving fluid having passed through the ring of turbine members and to conduct it back towards the ring of turbine members in a way such that the rotor is once more influenced in its rotational direction by driving fluid thus being reversed. 2. A centrifugal separator according to claim 1, wherein one of the supply member and the reversing member is arranged radially outside the ring of turbine members and the other one of the supply member and the reversing member is arranged radially inside the ring of turbine members. 3. A centrifugal separator according to claim 2, wherein the supply member is arranged radially outside the ring of turbine members and the reversing member is arranged radially inside the ring of turbine members. 4. A centrifugal separator according to claim 1, wherein the rotor at one axial end has a first portion surrounding the rotational axis and situated at a first radial distance therefrom and a second portion surrounding the rotational axis and situated at a second distance therefrom, said second distance being greater than said first distance and the ring of turbine members being arranged adjacent to and at the same distance from the rotational axis as said second portion. 5. A centrifugal separator according to claim 4, wherein the ring of turbine members is carried by said second portion of the rotor. 6. A centrifugal separator according to claim 1, wherein the rotor has a radially outermost portion and the ring of turbine members is situated at substantially the same distance from the rotational axis of the rotor as the radially outermost portion. 7. A centrifugal separator according to claim 1, wherein the rotor at one axial end has a bowl formed end wall having a concave outer side, and the ring of turbine members is supported at a radially outer edge portion of the bowl formed end wall. 8. A centrifugal separator according to claim 1, wherein the rotor includes a stack of conical separation discs, which have apex ends and base ends and which are arranged concentrically with the rotational axis of the rotor, the ring of turbine members being arranged at an axial end of the rotor, towards which the separation discs are facing their base ends. 9. A centrifugal separator according to claim 3, wherein said supply member is adapted to conduct said driving fluid towards the ring of turbine members from a supply area radially outside thereof. 10. A centrifugal separator according to claim 4, wherein the turbine members are adapted to give off driving fluid having been received from the supply member to a receiving area radially inside the ring of turbine members. 11. A centrifugal separator according to claim 1, wherein said reversing member is adapted to reverse at least part of said driving fluid towards the ring of turbine members at a reversing area situated at some distance ahead of the receiving area, seen in the rotational direction of the rotor. 12. A centrifugal separator according to claim 1, wherein the rotor is supported by a shaft, that through a bearing is supported by a stationary carrying member, the turbine members being supported by the rotor and said reversing member being arranged radially between said bearing and the turbine members. 13. A centrifugal separator according to claim 12, in which said stationary carrying member is rigidly connected with the reversing member. 14. A centrifugal separator according to claim 13, wherein the stationary carrying member is formed in one piece with the reversing member. 15. A centrifugal separator according to claim 1, wherein the rotor is adapted to be charged with the at least one gas and gas mixture to be cleaned from particles suspended therein, the rotor is surrounded by a stationary housing, which has the outlet for dispensing the at least one cleaned gas and cleaned gas mixture having been freed from particles in the rotor, the stationary housing delimits a receiving chamber, that is adapted for reception of the at least cleaned gas and cleaned gas mixture from the rotor having been freed from particles, and that communicates with said outlet, and the stationary housing is shaped in a way such that said receiving chamber is adapted for reception of driving fluid leaving the turbine members after having passed the turbine members a second time. 16. A centrifugal separator comprises an inlet for introducing at least one of a gas and gas mixture to be cleaned from particles suspended therein, an outlet for dispensing at least one of a cleaned gas and a cleaned gas mixture, a rotor and a driving means for rotation of the rotor about a rotational axis by means of a gaseous driving fluid, the driving means including: turbine members connected with the rotor and arranged in a ring around and at some distance from the rotational axis, at least one supply member for directing said driving fluid towards the ring of turbine members in a way such that the rotor is brought into rotation about said rotational axis by gradual actuation of the turbine members by the driving fluid, and at least one reversing member adapted to receive at least part of said driving fluid having passed through the ring of turbine members and to conduct it back towards the ring of turbine members in a way such that the rotor is once more influenced in its rotational direction by driving fluid thus being reversed; wherein the supply member is arranged radially outside the ring of turbine members and the reversing member is arranged radially inside the ring of turbine members. 17. A centrifugal separator according to claim 16, wherein said supply member is adapted to conduct said driving fluid towards the ring of turbine members from a supply area radially outside thereof. 18. A centrifugal separator comprises an inlet for introducing at least one of a gas and gas mixture to be cleaned from particles suspended therein, an outlet for dispensing at least one of a cleaned gas and a cleaned gas mixture, a rotor and a driving means for rotation of the rotor about a rotational axis by means of a gaseous driving fluid, the driving means including: turbine members connected with the rotor and arranged in a ring around and at some distance from the rotational axis, at least one supply member for directing said driving fluid towards the ring of turbine members in a way such that the rotor is brought into rotation about said rotational axis by gradual actuation of the turbine members by the driving fluid, and at least one reversing member adapted to receive at least part of said driving fluid having passed through the ring of turbine members and to conduct it back towards the ring of turbine members in a way such that the rotor is once more influenced in its rotational direction by driving fluid thus being reversed; and wherein the rotor at one axial end has a first portion surrounding the rotational axis and situated at a first radial distance therefrom and a second portion surrounding the rotational axis and situated at a second distance therefrom, said second distance being greater than said first distance and the ring of turbine members being arranged adjacent to and at the same distance from the rotational axis as said second portion. 19. A centrifugal separator according to claim 18, wherein the ring of turbine members is carried by said second portion of the rotor. 20. A centrifugal separator according to claim 18, wherein the turbine members are adapted to give off driving fluid having been received from the supply member to a receiving area radially inside the ring of turbine members. 21. A centrifugal separator comprises an inlet for introducing at least one of a gas and gas mixture to be cleaned from particles suspended therein, an outlet for dispensing at least one of a cleaned gas and a cleaned gas mixture, a rotor and a driving means for rotation of the rotor about a rotational axis by means of a gaseous driving fluid, the driving means including: turbine members connected with the rotor and arranged in a ring around and at some distance from the rotational axis, at least one supply member for directing said driving fluid towards the ring of turbine members in a way such that the rotor is brought into rotation about said rotational axis by gradual actuation of the turbine members by the driving fluid, and at least one reversing member adapted to receive at least part of said driving fluid having passed through the ring of turbine members and to conduct it back towards the ring of turbine members in a way such that the rotor is once more influenced in its rotational direction by driving fluid thus being reversed; and wherein the rotor at one axial end has a bowl formed end wall having a concave outer side, and the ring of turbine members is supported at a radially outer edge portion of the bowl formed end wall.