SU1002798A1 - Rotary heat pipe - Google Patents

Description

154) ROTATING HEAT PIPE

The invention relates to heat engineering, in particular to heat transfer devices operating with a phase transition of the primary coolant.

A heat transfer device is known in the form of a rotating heat pipe containing a hermetic housing with evaporation and condensation zones, provided with longitudinal fins of varying height, increasing in the direction from the evaporation zone to the condensation zone.

The disadvantage of the known heat. pipe is a low heat exchange rate.

The aim of the invention is to intensify heat exchange.

This goal is achieved by the fact that in a rotating heat pipe containing a hermetic case with evaporation and condensation zones, equipped with longitudinal variable height ribs, increasing in the direction from the evaporation zone to the condensation zone, the ribs are hollow, limiting their outer surface to the condensation zone, and they are provided with external transverse and longitudinal ribs, the latter of which are made with turbulizing holes.

FIG. 1 schematically shows the proposed heat pipe, FIG. 2 is a section A-A in FIG. i; in fig. 3 is a section BB of FIG. 2

The rotating heat pipe contains a hermetic casing 1 with evaporation zones 2 and condensation 3, provided with longitudinal ribs 4 of variable height, increasing in the direction from the evaporation zone 2 to the condensation zone 3, while the fins 4 are hollow, limiting the condensation zone 3, and are provided with outer transverse 5 and longitudinal 6 ribs, the latter of which are made with turbulent openings 20. 7. Hollow ribs 4 with respect to body 1 have outer 8 and inner 9 protrusions. The walls of the condensation zone 3, when connected between themselves on the outer side of the core 25 of the cusp 1, form depressions 10 times joro along the height of the section device.

Claims (1)

The longitudinal 6 and transverse 5 ribs are fixed within the limits of the volume of void 10. The transverse ribs 5 are made with an aerodynamic twist of the profile according to the most common i-Cu-con 3-t practice in practice. The rotary heat pipe works as follows. In the evaporation zone 2, a stable boiling process of the heat transfer medium takes place and it is replenished by condensate flowing down the inner surfaces of the outer projections 8 of the empty fins 4. external protrusions 8. Thus, the active surface of the condensation during operation of the pipe is practically freed from condensation. Solid longitudinal ribs fixed in depressions 10 increase the heat exchange surface in the zone of intense condensation on the internal projections of 9 hollow ribs 4 of housing 1, and transverse ribs 5 heat exchange surface in the area of external projections of 8 hollow edges 4 of housing 1, thereby intensifying the heat transfer process in the zone of the highest thermal resistance of the flowing condensate stitch. Longitudinal ribs with openings 7 and transverse 5 ribs in case of a hinge of body 1 additionally intensify heat exchange due to the turbulization of the cooled coolant in all zones. This effect, which intensifies heat transfer, increases if an aerodynamic spin is imparted to the transverse fin profile, which ensures not only turbulization but also axially forced movement of the heated heat carrier (forced convective heat transfer) when the housing 1 rotates. The economic effect of using the invention is to intensify heat transfer. An Inventive Rotary Heat Pipe, comprising a sealed housing with evaporation and condensation zones, provided with longitudinal ribs of variable height, increasing in the direction from the evaporation zone to the condensation zone, which, in order to intensify heat exchange, the ribs are hollow, limiting with the outer surface of the condensation zone, and provided with external transverse and longitudinal ribs, the latter of which are made with turbulence holes. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 567073, cl. F 28 D 15/00, 1973.