SU1686224A2 - Domestic fan - Google Patents

Abstract

This invention relates to a torus valve. It allows the service range to be extended by mounting the nuts 24 on the rack 2, which through the split ring contacts the stem. It is connected with an electric motor 3, on the shaft of which an impeller 5 with blades 6 is mounted, behind the wheel 5 mounted on the frame 8 are rotary vanes 11, which are mounted on two parallel slats 9 and 10. The slats 9 and 10 are connected through levers 13 with the rack 2. When the motor 3 is in operation, the air flow acts on the blades 11 and turns them on the slats 9 and 10, which switch the levers 13 to one of the extreme positions. In this case, the air reaction to the blades 11 turns the electric motor 3 around the stand 2 until the lever 13 stops in the stop 27, which moves the levers 13 and the blades 11 to the opposite extreme position. The blades 6 are provided with inserts that are installed with the possibility of reciprocating movement in the grooves. 7 il.

Description

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The invention relates to the field of ventilation, and in particular to a domestic fan, and is an improvement of the fan according to the main author. No. 1320519.

The purpose of the invention is to expand the range of services.

Figure 1 shows a domestic fan; figure 2 is a view of And figure 1; FIG. 3 shows a rotating blade of the fan, section; Fig. 4 shows a rack attachment assembly; figure 5 - section bb on fsh.4; on figb - section bb In figure 1; 7 - node I in fig.b.

A household fan contains a base 1 with a stand 2, an electric motor 3 mounted on it, on the shaft 4 of which an impeller 5 with blades 6 is mounted, and on the housing 7 - a frame 8 hinged to the impeller 5 on two parallel rails 9 and 10 rotary vanes 11. The electric motor 3 is mounted on a rack 2 with the possibility of rotation around its axis on the rod 12. The rotation mechanism of the blades 11 is made in the form of two levers 13 and 14 of the first row, pivotally interconnected by means of an elastic element 15 and a hinge 16, free end 17 of one of the levers 13 is in contact with the pillar 2, and the other has a T-shaped groove 18, Reiki 9 and 10 are provided with protrusions 19 placed in that groove, and one of them is mounted on the frame 8. In each rotary blade 11 from the exit edge a longitudinal groove 20 is made. The blades 11 are provided with inserts 21 arranged in the grooves 20 with the possibility of reciprocating movement in the direction from the input to the output edges. On the outer surface of the rack 2, a thread 22 is formed. The rack 2 is hollow and provided with a rod 12 and a braking device 23 housed in it rotatably around its axis and attached to the electric motor 3. The braking device is made in the form of a nut 24, covering the rack 2 and forming there is a helical pair and a split elastic ring 25. A tapered bore 26 is made on the inner surface of the nut 24 with one of its ends. The ring 25 is placed in the bore 26 and contacts the surface of the rod 12. The stand 2 is equipped with the reader 27.

During operation of the fan, the air flow from the blades 6 acts on the rotary vanes 11, which together with the frame 8 turn the electric motor 3 around

supports 2 up to the stop of the free end 17 of the lever 13 against the stopper 27. In this case, the turning mechanism with its levers 13 and 14 puts the rail 10 into a secondary steady state and the vanes 11 change the angle

reversal. In this case, the electric motor 3 is turned to the opposite extreme position. The cycle is repeated. At low speeds of rotation of the impeller 5 on the blades 11, the chord can be increased by extending the inserts 21. The turning speed of the electric motor 3 on the rack 2 is regulated by pressing the nut 24 of the ring 25.

Claims (1)

Invention Formula Household fan auth. St. No. 1320519, characterized in that, in order to expand the range of service, in each rotary blade, a longitudinal groove is made on the output edge side, the blades are provided with inserts arranged in the slots with the possibility of reciprocating movement in the direction from the input edge to the output edge, on the outer surface the posts are made of thread, the stand is made hollow, provided with a rod placed therein that can be rotated around its axis and attached to the electric motor and a braking device made in the form nut embracing the bar and forming with it a screw pair and a split elastic ring and the nut at the inner surface on one of its the ends are made conical bore, the ring is placed in the latter and is in contact with the surface of the rod. sh FI.2 Fig.Z 45 FIG. five Iq I  FIG. 7