Internal-condensation metal inner tube type solar energy heat-collecting device

Abstract

The invention discloses an internal-condensation metal inner tube type solar energy heat-collecting device which belongs to the field of solar energy heat utilization. A filling fixture, an involute type reflection surface, a metal absorption tube, a metal regulating tube, a screw and a piston are sequentially inserted in an outer glass tube; upper ports and lower ports of the metal absorption tube and the metal regulating tube are respectively sealed by an upper end cover and a lower end cover through welding, a water inlet and outlet pipe is connected to the lower end cover and a steam exhaust pipe is connected to the upper end cover, the screw penetrates through the upper end cover to be connected with a motor, the motor is fixed at the outer part of the upper end cover, two ends of the outer wall of the metal absorption tube are inwards sequentially provided with straight mouth rings, corrugated rings and alloy rings from openings in a sleeving and welding manner, and one ends of the two alloy rings at two ends are respectively in burn-back with two ends of the outer glass tube so that a vacuum interlayer is formed between the outer glass tube and the metal absorption tube. The internal-condensation metal inner tube type solar energy heat-collecting device can be used for condensing light and bearing pressure, can be made into a single-tube water heater, has capabilities of freely regulating water storage quantity and providing steam or boiled water, and can be used in life, water purification, heating, refrigerating and the like.

Description

technical field [0001] The invention relates to a metal inner tube type solar heat collecting device for internal concentrating light, which belongs to the field of solar heat utilization. Background technique [0002] Solar water heaters are currently the most popular form of solar thermal utilization that benefits the masses. Existing solar water heaters generally use all-glass solar vacuum tubes as heat-collecting components. This type of vacuum tube has mature technology, stable operation, and low cost. Most steam can only be used for bathing, and cannot be widely used in other fields except bathing. Many people have proposed multiple solutions around the above-mentioned problems. Among the many solutions, there are two kinds of solutions that are relatively close to the present invention. The first is the "Inner Concentrating All-Glass Vacuum Heat Collection Tube" proposed by the application number 200720000692.5. The solution solves the problem of obtaining boiled wa...

AI Technical Summary

Problems solved by technology

Existing solar water heaters generally use all-glass solar vacuum tubes as heat-collecting components. This type of vacuum tube has mature technology, stable operation, and low cost. Steam, most of which can only be used for bathing, cannot be widely used in other fields besides bathing

Many people have proposed multiple solutions around the above-mentioned problems. Among the many solutions, there are two kinds of solutions that are relatively close to the present invention. The first is the "Inner Concentrating All-Glass Vacuum Heat Collection Tube" proposed by the application number 200720000692.5. The solution solves the problem of obtaining boiled water or steam above 100 degrees without tracking, but because it still uses all-glass materials, it fails to solve the problem of pressure bearing, which limits its popularization; the second is the application number 200620135895.0. The "Metal Absorber Tube Straight-through Vacuum Solar Heat Collector", this solution solves the problem of pressure bearing, and it can achieve a good heat collection effect when used in conjunction with sun tracking equipment, but in non-sun tracking occasions, due to its In order to solve the problem of thermal expansion and cold contraction between metal and glass, glass bellows sleeves are installed at both ends, so that the effective lighting area of ​​the inner tube is much smaller than the area occupied by the outer tube, and the lighting effect is poor. Under tracking conditions, it is difficult for this type of vacuum tube to produce steam or boiled water above 100 degrees. In addition, the high cost of this type of vacuum tube and the weight of the tube make it difficult to popularize it in non-sun tracking occasions.

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