SU1165869A1 - Centrifugal heat pipe - Google Patents

Abstract

A CENTRIFUGAL HEAT PIPE, comprising a housing with evaporation and condensation zones at opposite ends, a tube mounted along the housing axis with a braking device and a radially located branch pipe having a condensate intake opening, characterized in that work when changing the direction of the heat flow, the tube is provided with a second pipe, the intake opening of which is directed opposite to the hole of the first, and the pipes are located on opposite bying ends of the tube, and the braking device is a magnetic system.

Description

C5 SP

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The invention relates to devices for heat transfer, carried out by circulating a heat transfer fluid with a change in its state of aggregation within a rotating rotor, and may find application in the power engineering, mechanical engineering, refrigeration technology and other folk industries.

The known heat pipe, designed to cool the rotating shaft, is formed inside the shaft in the form of a hermetic axial channel having the shape of a truncated cone, extending in the direction of the evaporation zone to move the condensate using centrifugal forces 1.

The disadvantage of the heat pipe is that it provides cooling of the shaft by removing heat from the shaft in one direction only. This heat pipe cannot be reversible, since the direction of heat flow does not change when the direction of rotation is changed.

Also known is a centrifugal heat pipe, comprising a housing with evaporation and condensation zones at opposite ends, a tube mounted along the housing axis with a braking device and a radially disposed nozzle having an intake port for condensate 2.

The disadvantage of this heat pipe is the narrow operating range.

The aim of the invention is to expand the working range of the pipe by ensuring that it works when the direction of the heat flow is changed.

The goal is achieved by the fact that in a centrifugal heat pipe, comprising a housing with evaporation and condensation zones at opposite ends, a tube mounted on the housing axis with a braking device and a radially arranged branch pipe having a condensate intake port, the tube is provided with a second branch pipe, the intake port of which directed opposite to the opening of the first, with the pipes located at opposite ends of the tube, and the braking device is made in the form of a magnetic system.

FIG. 1 shows the proposed centrifugal heat pipe; in fig. 2 -, section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The heat pipe includes a housing 1 with zones 2 and 3 of evaporation and condensation at opposite ends, a tube 4 mounted along the axis of the housing 1 with a braking device m and a radially located nozzle 5 having a condensate intake port. The pipe is provided with a second pipe 6, the intake opening of which is opposite to the hole of the first one, with sections 5 and 6 located at opposite ends of the tube 4 fixed in bearings 7, and the braking device is made in the form of a magnetic system.

Retention of nozzles 5 and 6 from rotation

5 by a magnetic field through a non-magnetic part of the body is produced by an induction coupling, the measles of which 8 is located inside the body 1 of the heat pipe, and the stator 9 is outside.

Radial fins 10 can be installed inside housing I.

Heat pipe works as follows.

During the rotation of the pipe, for example, clockwise (Fig. 1, section BB

5 and B-B) zone 2 is a condensation zone. The heat carrier condensed due to heat removal acquires rotational motion either due to friction on the body 1, or by means of radial ribs 10 and enters the intake port of the nozzle 5 located in this zone. Further, the coolant through the channel of the nozzle 5, the tube 4 and the channel of the nozzle 6 enters the zone 3, which in this case is the evaporation zone where the heat is supplied. Pipe 6 in this zone 3 (in this case) performs only the role of the coolant supply channel. The steam generated by the supply of heat to the chamber 3 due to the pressure difference enters zone 2. Then the cycle repeats.

To change the direction of heat flow, the direction of rotation of the body 1 of the heat pipe is changed. In this case, zone 2 becomes the evaporation zone, zone 3 - the condensation zone. When working thermal

 in the evaporation zone 2, the heat transfer fluid is sucked through the nozzle 5 due to ejection, thereby facilitating the circulation of the heat transfer fluid.

The economic effect resulting from the use of the proposed heat pipe arises due to the expansion of the working range of the pipe.

Fig.Z

FIG L

Claims (1)

CENTRIFUGAL HEAT PIPE, comprising a housing with evaporation and condensation zones at opposite ends, a tube mounted along the axis of the housing with a braking device and a radially arranged pipe having a condensate inlet, characterized in that, in order to expand the working range of the pipe by ensuring its operation during changing the direction of the heat flow, the tube is equipped with a second nozzle, the intake opening of which is directed opposite to the opening of the first, and the nozzles are located on the counter zhnyh ends of the tube, and the inhibiting device is a magnetic system. —I of FIG. 7