CS201588B1 - Fan - Google Patents

Description

CZECHOSLOVAK SOCIALIST REPUBLIC (19) DESCRIPTION OF THE INVENTION CERTIFICATE CERTIFICATE 201588 (lil (Bl) (51) Int Cl3 F 23 N 3/08 (22) Registered 12 02 75 w (21) (PV 885—75) (40) Published 31 03 80 OFFICE OFFICE (45) Issued 30 04 82 AND DISCOVERY (75) ..

Author of the Invention SCHUBERT MILOŠ, PRAHA (54) Fan The subject of the invention is a fan by which the acceleration of flue gas is accelerated.

Up to now, axial and centrifugal fans have been used to accelerate the flue gas. In the housings, rotors composed of paddle wheels accelerating the flue gas in the axial direction, or from the axis to the circulation, are centrifuged in the bearings. In axial fans, the blades are located at the periphery of the aspal rotor flowing through the blades in the rotational axis direction. Centrifugal fans are located on a disc between the axis of rotation and the circumference. In both cases, the rotational speed of the rotors is high for both the axial and centrifugal fans, as well as the flow velocity around the blades. The abrasive flue gas burns off the blades very quickly, thereby reducing the function of the fans, so that the rotor with the damaged blades has to be replaced in a relatively short time, and the operation of the thermal energy equipment must be stopped, even temporarily. Also, paddle wheels - rotors are expensive to manufacture and their frequent replacement even increases operating costs. | The aforementioned drawbacks are eliminated by the fan according to the invention, which consists essentially of a circular chamber in which the vanes with plate-like stops, springs and wedges alternate with the grooved shaft, with the upper blade always being braked by the upper stop with a compression spring and a protrusion located in the enclosure on the circular chamber in the middle between the supply and exhaust pipes.

In the accompanying drawing, FIG. 1 shows the beginning of the circulation of the second vane when the flue gas is sucked in by its rear side and at the same time displacing the flue gas from the chamber to the front. Ob. 2 depicts the run-out of the second blade with extrusion and exhaustion of flue gas. FIG. 3 is a cross-sectional view of a fan where the first and second vanes are divided with plate stops, including shafts, and a top stop in the annular chamber. FIG. 4 is a side view of a first and a second plate-shaped stopper blade including a wedge and a top stop, a shaft, a flue gas inlet and outlet duct. In the annular chamber 1, the first vane 2a is a second vane 3 provided with plate-like stoppers 4, 5 with springs 6 and wedges 7, 8 guided by a shaft 9 with grooves 10 rotating in bearings 11, the first vane 2a the second vane 3 in the upper position being braked the upper stop 12 by the compression spring 13 and the protrusion 14 pivotally fixed in the housing 15 between the supply pipe 16 and the discharge pipe 17 201588

Claims (1)

2, the fan operates in such a way that the first vane 2 is braked by the upper stop 12 and forms a partition wall in the annular chamber 1 through the intermediate duct 16 and the discharge duct 17, into which the flue gas is blown by the second vane 3 which is in circulation and at the same time, with its rear side sucking flue gas into the annular chamber 1, which then subsequently extrudes the first vane 2 into the discharge conduit 17 and, at the same time, sucks the flue gas of the circular chamber 1, the cycle of one of the vane and the other circulating. While the second blade 3 is in circulation, its plate 3 is inserted into the groove 10 of the shaft 9 which rotates in the bearings 11 and is driven by the gear set and the electric motor (not shown). At the time of the second blade 3 in the top dead center, by the impact of the vane 2 which is braked by the upper stop 12, the wedge 8 of the second blade is moved back against the direction of rotation, thereby releasing the stopper 5 and the spring 6 extending the grooves 10 on the shaft 9 and above the RED. MEASUREMENT Fan to accelerate flue gas burners with blades in a circular chamber with driven shafts with grooves and bearings, with feed and discharge pipes, characterized in that the first vane (2) and the second vane (3) are provided with plate-like stops (4,5) with the springs (6), the wedges (7, 8) and the shaft lifted by the protrusion 14, the upper stop 12 and thus releasing the first vane 2, while simultaneously pushing its wedge stopper 7 in its direction of rotation 4 into the groove 10 of the shaft 9, thereby moving the first blade 2 and pushing its front side and sucking in the smoke flue with its front side. houlopatka 3, which at the time of circulation the first vanes 2 form a partition wall. The first vane 2 and the second vane 3 alternately circulate and automatically brake and move, the shaft 9 still rotating uniformly. The fan will operate at high efficiency, as opposed to working with large quartz flue gases at their low speed. If necessary, the blades can be sealed. The use of a fan also applies to mines for pumping clean and sucking off uncleaned air, or in a more robust but smaller version as a liquid pump. SUMMARY OF THE INVENTION (9) with grooves (10) in bearings (11), while in the annular chamber (1) in the housing. (15) an upper baffle (12) with a projection (14) assisted by a spring (13) is rotatably supported between the supply line (16) and the discharge line (17). 3 drawings in