Thermosyphon and method of manufacturing the same

Abstract

A thermosiphon device with a simple structure that improves the heat transfer efficiency of the device itself to the outside and has low manufacturing cost and a manufacturing method thereof. The double-tube thermosiphon device is formed as a single, same-sized cylinder comprising an outer tube (10) and a plug (14). The outer tube (10) and the plug (14) are formed with the same outer diameter (K) so as to simultaneously contact with one plane placed on the upper outer surface. Therefore, for example, when it is installed underground, it will be in continuous and close contact with the upper heat transfer plate in the longitudinal direction, which can reduce heat transfer loss and improve heat transfer efficiency. Moreover, there are fewer cutting parts, which can improve the qualified rate of materials.

Description

technical field [0001] The present invention relates to a thermosiphon device and a manufacturing method thereof, in particular to a double-tube type thermosiphon device and a manufacturing method thereof, in which an inner pipe used for heat source fluid circulation is penetrated in an outer pipe serving as a main pipe. Background technique [0002] For heat exchange equipment such as heat pumps, which have the characteristic that the smaller the temperature difference between the heat exchange fluids, the lower the heat exchange efficiency, recently, thermosiphon devices that can transfer a large amount of heat with a small temperature difference by using condensation and evaporation phase changes are gradually being developed. Practical. Among them, the inner tube for the circulation of the heat source fluid is passed through the outer tube, for example, a structure in which cold and warm heat is transferred horizontally is excellent in practicality and attracts attention...

AI Technical Summary

Problems solved by technology

However, in this thermosiphon device, such as Figure 13 As shown, the wall thickness of the extruded and laterally bent flange 110A causes a step F to be generated between the two end side parts of a thermosyphon device and the outer pipe part in the middle thereof. When the upper indoor side is heated, etc., heat transfer loss occurs due to the gap between the uniform heat transfer plate 114 such as an aluminum plate laid on the upper surface, which becomes the main cause of the decrease in the heating or cooling efficiency of the indoor side.

In addition, because of the step F, there is a gap between the support member of the thermosiphon arranged under the floor, and there is a possibility that the floor may make floor noise when walking.

[0005] Moreover, for the conventional thermosiphon device shown in the above-mentioned Patent Document 1, the outer tube part is formed, for example, by extruding or stretching aluminum, and the solid cylinder cover 106 that closes both ends of the outer tube 100 can withstand The strength of the extrusion force used in the extrusion process when the extrusion device performs the extrusion operation, such as Figure 12 , Figure 13 As shown, the thickness in the axial direction cannot be reduced, and in order to maintain airtightness in vacuum, the Figure 12 The flange 110 in the diameter D of the aluminum bar is cut and manufactured

Therefore, the qualified rate of the cover material is low, and the manufacturing cost of the thermosiphon itself is high.

Images