SU909552A1 - Heating pipe - Google Patents

Description

(5) HEAT PIPE

The invention relates to heat pipes with a slit capillary structure and can be used in heat engineering and power engineering. A heat pipe is known, comprising a housing with evaporation, transport and condensation zones and a capillary structure in the form of a multi-turn tape helix, forming capillary slots and having extrusions whose height is equal to the width of the capillary slots I. A disadvantage of the known heat pipe is the complexity of its manufacture. The purpose of the invention is to simplify the technology of manufacturing a heat pipe with a spiral capillary structure. To achieve this goal in a heat pipe, the casing is made in one piece with the capillary structure and serves as its outer turn, and the extrusions are made only in the transport zone, and in the condensation and evaporation zones perforated. FIG. 1 shows a schematic heat pipe; in fig. 2 is a cross-section A-D in FIG. one; in fig. 3 is a section BB in FIG. 1 Heat pipe contains a ribbon helix 1 with a sealed cavity. Tightness is provided by end-plates 2, tightly fixed on the surface of the outer turn of the helix (body) 1 by welding or soldering, as well as welding or soldering of the outer edge of the helix along its length. The pipe has evaporation zones 3, transport and condensation 5. On the turns of helix 1, in zone 4 of transport, there are blind impulses 6 that define the width of the capillary slots 7 and perforations 8. The central part of the pipe is slide and serves to pass the coolant vapor. The calculated volume of the heat carrier is placed in the tube cavity (in its capillary structure). The pipe works as follows. When heat is supplied to the body (helix 1) in the evaporation zone 3 or, conversely, when heat is removed in the condensation zone 5, heat exchange between the outer wall of the pipe and the coolant occurs directly. In this case, there is no thermal resistance between the housing 1 and the capillary structure, since they are one whole. This circumstance improves heat transfer. When the coolant boils, the steam passes through the perforation 8 into the gas cavity of the pipe and moves to the condensation zone 5, where through the perforation 8 it enters the cooled wall of the housing (outer turn of helix 1), condenses on it and through capillary gaps 7 under the influence of capillaries rnyh forces enter the zone of its loss, i.e. to evaporation zone 3. The use of the invention allows to increase the resource and reliability of the heat pipe, reduce the cost of it due to the simplification of the design and technology of

AND

g

Claims (1)

(Rig, 1 of preparation and provides reproducibility of the main characteristics of the pipe. Invention Formula A heat pipe comprising a body with evaporation, transport and condensation zones and a capillary structure in the form of a multi-turn helix forming capillary slots and having extrudes whose height is equal to the width of cracks, due to the fact that, in order to simplify the manufacturing technology, the casing is made in one piece with the capillary structure and serves as its outer coil, and the extrusions are made only in the transport zone of the mouth, and in the zones of condensation and evaporation the spiral is perforated. Sources of information taken into account in the examination. Voronin GI Low-temperature heat pipes for aircraft. M., Mashinostroenie, Aa