SU1417109A1 - Dynamoelectric machine - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to improve the cooling efficiency with air refrigerant and simplification. The electric machine contains a hollow shaft 1 with coolant and a pressure element with channels 3. Because the vortex pipe 4 is fixed in the hollow shaft, and the connection of the channels of the pressure element with the vortex pipe cavity is made in the tangential direction, the goal is achieved. 1 h. the item of f-ly, 4 ill.

Description

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ABOUT

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The invention relates to electrical engineering, in particular to the field of air cooling of electrical machines.

The purpose of the invention is to increase the cooling efficiency with an air refrigerant and simplify it.

FIG. 1 depicts an electric machine; in fig. 2 - shaft with a vortex tube and a pressure element; Fig, 3 - pressure element, cross section; in fig. 4 is a view A of FIG. 2

The electric machine contains a hollow shaft 1, a disk 2 of a pressure element, air ducts 3, a vortex tube 4, a calibrated orifice 5, a cold end 6

1417109

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tricheska machine past, in a design. Thus, the complicated pressure element used in a known machine has been replaced with an air channel disc, which is held on the rotor shaft, for example, by means of a key. The simplified design of the proposed electric machine is also due to the fact that the air ducts for cold and hot flows do not require high tightness. In the case when the proposed electric machine is reversible, a second row of air channels directed in the opposite direction can be placed on the disk. According to the vortex pipe, the radial channels 7, the core of the action of the vortex pipe direction

the start 8, the rotor 9, the stator 10, the hot co-rotation of the vortex can be chosen as

Hell 11 of the vortex tube, heat insulating clockwise, and against, at the same time

the coating 12, the axial holes 13, the efficiency of the vortex tube is not

the flange 14 and the bearing 15. is changed. If necessary, removal from

The machine works as follows. When the hollow shaft 1 rotates, the rotational amount of heat of the rotating vortex disk 2 with air channels 3 is rotating. The co-tubes can be placed in the air and the discharge ends of the hollow rotor shaft, and the flows

it into the vortex tube 4. Thanks to the tan-cold air directed oppositely,

air supply and the dynamic-rotating design of the vortex to the tubular head in the vortex tube 4 forms;

with an air vortex, in which the inner layers of air give away the outer layers. The central cold air flow through the calibrated orifice 5 of the cold end 6 of the vortex tube 4 between the rotor and the bearing, and also behind the bearing. In this case, the need for an internal heat insulating coating on the hot end of the vortex tube is eliminated and conditions are improved.

drips into the hollow shaft 1 along the radial section of the cooling of the bearing. To increase the cams 7 goes inside the housing 8, where the efficiency of the vortex tube is hot, it washes the surfaces of the rotor 9, the stator 10, the end can be cooled, for example, the flow through removes excess heat and is removed by the liquid, which is completely safe to the environment. External hot for an electric machine, since the cooling air layers over the hot end 11, the swirling hot end of the vortex tube can roar the tube 4, having a heat insulating 35, located outside the body of the electrical coating 12, through the axial opening - maschiny. In addition, a disk with airpipes 13 of the flange 14 is retracted from the side of the channels, can be structurally bearing 15 to the outside, where they are mixed together as a separate unit of equal strength with the surrounding air, the rotor shaft, and is connected to the hollow shaft.

When this disk 2, mounted on a hollow for example, using flanges. Since the rotor of the rotor 1, with a tube mounted on it, the vortex-generating tube is placed in

The shaft of the rotor does not bear a mechanical load, its parts can be made of plastic with specified properties. In order to reduce the length of the cold channels 3 forms a pressure element.

Claims (2)

In the proposed machine, in contrast to the known, only one tenlobal is used to give it an expanding shape. Invention Formula carrier, in particular, air, which is better to be dangerous at the variable end of the vortex tube. The temperature of the cooling air due to the action of the vortex tube is always lower than the temperature of the air used for cooling in known machines. This increases efficiency. Electric machine containing air cooling and allows for the exclusion of the stator, the rotor with the installed need to use a shaft with a liquid in which cavity the coolant is placed, and a pressure element with channels communicating with the internal cavity of the shaft, to increase the efficiency of cooling to the air flow around the heat-55 day with the air coolant and the sealing surfaces of the electric roll, a vortex is fixed in the hollow shaft the pipe, the pressure element is designed as a disk with channels, the connection of which with heat transfer circuit. The use of a hollow shaft rotor for pumping cooling air also increases the efficiency of air cooling, so tires outside add the cooling effect of the rotor from the inside. We offer elek1417109 tricheska machine past, in a design. Thus, the complicated pressure element used in a known machine has been replaced with an air channel disc, which is held on the rotor shaft, for example, by means of a key. The simplified design of the proposed electric machine is also due to the fact that the air ducts for cold and hot flows do not require high tightness. In the case when the proposed electric machine is reversible, a second row of air channels directed in the opposite direction can be placed on the disk. According to the prinal between the rotor and the bearing, as well as for the support. In this case, the need for an internal heat insulating coating on the hot end of the vortex tube is eliminated and conditions are improved. bearing cooling. To increase the efficiency of the vortex tube, its hot end can be cooled, for example, with a flow-through fluid, which is safe for an electric machine, since the cooled hot end of the vortex tube can be located outside the electrical masking housing. In addition, a disk with air channels can be structurally made as a separate unit, of equal strength to the rotor shaft, and articulated with a hollow shaft. give it expanding form. Invention Formula the end of the vortex tube the internal cavity of the vortex tube is made in the tangential direction. 2. Machine according to claim 1, characterized in that the tube rotating from the swirl located on the shaft between the rotor and the support, and in the part facing the support, on the inner side has a heat insulating coating. R fis: 1 B) 2 view A fieL