Generator of diffusion absorption type refrigeration machine core

Abstract

The invention discloses a generator of a diffusion absorption type refrigeration machine core, comprising an inner pipe, an outer pipe and a heating sleeve, wherein the outer pipe is formed by connecting two sections of pipes, i.e. a thick pipe and a thin pipe, wherein the thick pipe is provided with an opening; the heating sleeve is inserted into the opening, and the opening of the thick pipe ishermetically connected with the heating sleeve. The outer pipe of the generator is divided into two sections, one section is the thin pipe with the characteristics the same as an original outer pipe,and the other section is the relative shorter and thickened thick pipe, and the thick pipe is used for packaging the inner pipe and the heating sleeve and is hermetically connected with the thin pipeby gas welding; a heating sleeve pipe is arranged in the thick pipe and attached to the inner pipe; and heat emitted from an electric heating rod can intensively heat the inner pipe. Compared with theprior art, the invention reduces the heat flowing way towards the outer pipe, saves the heat energy, enhances the evaporation intensity of liquid ammonia and further shortens the starting time of a refrigeration system.

Description

technical field [0001] The present invention relates to an improved thermally efficient generator for a diffusion-absorption refrigeration system. Background technique [0002] Diffusion absorption refrigeration is a fully welded sealed refrigeration system that uses three working fluids and uses heat energy as the power. Generally, ammonia is used as the refrigerant, water is used as the absorbent, and the inert gas helium is used as the diffusing agent. The system has the characteristics of no moving parts, no valves, no noise, simple and compact structure, stable and reliable operation, long service life, and can be driven by various energy sources. At present, this refrigeration system is mainly used in small refrigerators. [0003] The generator is an important component in the diffusion-absorption refrigeration system, and the structure of the generator directly affects the refrigeration efficiency of the system. figure 1 , figure 2 It is a generator in an existing...

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Problems solved by technology

But later studies found that the effect was still not ideal, the reason is that the outer tube 2 including the inner tube and the riser is a whole thickened tube, but the length of the heating jacket is less than the length of the outer tube, generally equal to or less than half of the outer tube The length increases the heating volume of the outer tube part 21 on the upper part of the heating sleeve. When the heating rod heats the inner tube, part of the heat is also dissipated into the outer tube part on the upper part of the heating sleeve; because the outer tube on the upper part of the heating sleeve Compared with the external heating structure, the volume is increased, which affects the evaporation of liquid ammonia by the riser 4, thereby prolonging the start-up time of the movement

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