SU1536479A1 - Electrical machine - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to increase reliability by improving the processability of fastening heat pipes with spiral finning. The electric machine contains a heat exchanger 5 of the heat pipes 6 installed in the tube board. Because the tube board 8 has a groove which communicates with an opening, one of the edges of which is bent towards the cooling zone of the tubes and the other side is reached set goal 1 hp f-ly, 3 ill.

Description

Phie.1

315

The invention relates to the cooling of electric machines, to structural elements of heat exchangers, and can be used in any industry that uses heat exchangers.

The purpose of the invention is to increase reliability by improving technological

Before assembling the heat exchanger two

of heat pipe fastening with spi-10 lower intercostal spaces

25

Rival fins.

FIG. 1 shows an electric machine with a heat exchanger, longitudinal section; in fig. 2 - heat exchanger element with a heat pipe with spiral fin 15, section; in fig. 3 piece of tube plate.

An electric machine consists of a package of 1 stator, a winding 2 of a stator, a rotor 3, a bed, with a heat exchanger 5 fixed on it, consisting of heat pipes 6 with continuous spiral finning 7 and tube plate 8, fans 9 and 10. Circulation of internal air (shown by solid arrows), carried out by the internal fan 9, provides heat to the heating sections of the heat pipes located in the internal cavity of the machine. The heat pipes are cooled by the air flow (in Fig. 1 - dashed arrows) created by the external air-blower 10.

Pipe board 8 is made in the form of a sheet of a material that has the property of plastic deformation (for example steel, aluminum, some types of plastics) with a thickness slightly less than the distance between the edges of the heat pipe. In the tube plate, a hole 11 is made with a diameter d and a diameter of 0.2-1 mm. A rectangular groove 12 is connected with the round hole, h is 1-2 mm longer than 45 the height of the pipe fin. The width of the groove Ј should be approximately equal to twice the thickness of the pipe fin. Edges 13 and 14

thirty

35

If necessary, fill the pipe with a self-drilling viscous compound, for example, elastosil, sealant 137-185, Vicent. During assembly, the compound spreads and seals the pipe in the pipe

board, providing a loosener.

sealing the formula of the invention

Claims (2)

1. An electric machine containing a heat exchanger of heat pipes installed in a tube board with lower ends located in the inner cavity of the machine and with upper ends located in the cooling zone with outside air, which is designed to improve reliability by improving those the thermality of fastening heat pipes with spiral fins, the tube plate in the zone of each hole has a slot connected with the indicated hole, one of the edges of which is bent towards the cooling zone of the tubes, and the other side in the inner cavity of the machine, -and said edges arranged on both sides of the rib, the first - in the intercostal space outside boards, and other - in the intercostal space dimensional space in the inner bands of five cars. 2. Machine pop. 1, characterized in that the two adjacent interbranch spaces in the zone of connection of the heat pipes with the tube plate are filled with compound. the groove is bent in opposite directions, towards the cooling plots of the heat pipes and the internal cavity of the machine, respectively, so that they are located on both sides of the edge of the heat pipe to be installed. Before assembling the heat exchanger two A pipe can be filled with a self-hardening viscous compound, for example, elastosil, sealant 137-185, Vicent. During assembly, the compound spreads and seals the pipe in the pipe board, providing a loosener. sealing tep Invention Formula 1. An electric machine containing a heat exchanger of heat pipes installed in a tube board with lower ends located in the inner cavity of the machine and with upper ends located in the cooling zone with outside air, characterized in that, in order to increase reliability by improving the processability of fixing thermal tubes with spiral finning, the tube board in the zone of each hole has a groove connected to the hole, one of the edges of which is bent in the direction of the cooling zone of the tubes, and the other side the inner cavity of the machine, -and said edges arranged on both sides of the rib, the first - in the intercostal space outside boards, and other - in the intercostal space in the interior of the machine. 2. Machine pop. 1, characterized in that the two adjacent intercostal spaces in the zone of connection of the heat pipes with the tube plate are filled with compound. 3