SU892181A1 - Heat pipe - Google Patents

Description

(54) HEAT PIPE

I

This invention relates to heat transfer devices.

A heat pipe is known, comprising a hermetic body partially filled with a coolant with evaporation and condensation zones and a system of longitudinal capillary grooves located on the inner surface of the body along its entire length 1.

A disadvantage of the known heat pipe is a relatively short lifetime, especially if the pipe is high-temperature, which is caused by the deposition of non-volatile impurities inside the capillary grooves in the evaporation zone, which clog the capillary grooves as they accumulate.

The purpose of the invention is to increase the life of the pipe.

This goal is achieved by the fact that additional longitudinal grooves are made in the evaporation zone between adjacent capillary grooves. Longitudinal capillary-porous inserts can be installed in the additional grooves. In addition, each capillary-porous insert may be made of a getter. .

FIG. 1 shows a diagram of a heat pipe, a longitudinal section; in fig. 2 shows sections A-A and B-B in FIG. one; in fig. 3 is a section BB in FIG. one.

The heat pipe contains a hermetic body 1 partially filled with coolant with zones 2 and 3 of evaporation and condensation, respectively, and a system of longitudinal capillary grooves 4 located on the inner surface of the body 1 along its entire length.

In zone 2 evaporation between adjacent

10 capillary grooves 4 are made up. Optional longitudinal grooves 5.

In the additional grooves 5, longitudinal capillary-porous inserts 6 are installed. Each capillary-porous 15 insert 6 can be made of a getter.

Heat pipe works as follows.

When heat is supplied and removed in zones 2 and 3 of evaporation and condensation, respectively, between these zones, heat and mass exchange takes place when the aggregate state of the coolant changes, and the condensate of the coolant is capillary

the grooves 4 are moved to the evaporation zone 2. In this zone, under certain thermal conditions, the condensate of the coolant is expelled from the capillary grooves 4, as a result of which it enters the additional grooves 5, from which it evaporates, while the non-volatile impurities accumulate in the additional grooves 5. -porous inserts 6. When a non-condensable gas is formed in the pipe, insert 6 can be made of a getter that absorbs this gas. Due to the presence of additional grooves 5, the amount of impurities in the capillary grooves 4 is reduced, which contributes to an increase in the life of the heat pipe.

Claims (3)

Invention Formula . Heat pipe, predominantly high temperature, containing partially a sealed enclosure filled with a heat carrier with evaporation and condensation zones and a system of longitudinal capillary grooves located on the inner surface of the housing along its entire length, characterized in that, in order to increase the service life of the pipe, additional longitudinal grooves. 2. A pipe according to claim 1, characterized in that longitudinal capillary-porous inserts are installed in the additional grooves. 3. Pipe on PP. 1 and 2, characterized in that each capillary-porous insert is made of a getter. Sources of information taken into account in the examination 1. Heat pipes. Ed. E. E. Shpilraina. M., “Peace, 1972, p. 320.