Solar air heating device

Abstract

The invention relates to the field of heating equipment, in particular to a solar air heating device. The solar air heating device comprises an air pipe, a solar vacuum pipe, a baffle and an air guideplate. The air pipe is divided into an air inlet cavity and an air outlet cavity through the baffle. The air inlet cavity is suitable for being connected with an air source. The air outlet cavity issuitable for being connected with a hot air use device. The solar vacuum pipe comprises an opening end and a closed end. The air guide plate is arranged in the solar vacuum pipe so as to divide the space in the solar vacuum pipe into two halves which only communicate at the closed end, and a U-shaped air runner along the pipe wall is formed in the solar vacuum pipe. The air runner comprises an outlet and an inlet at the opening end, wherein the inlet communicates with the air inlet cavity, and the outlet communicates with the air outlet cavity. By means of the solar air heating device, air energy can directly penetrates the solar vacuum pipe, and the solar vacuum pipe is used for directly heating air. The solar air heating device is high in heat exchange efficiency, air can be heated to 100 DEG C or above, in addition, the structure is simple, the manufacturing cost is low, and the solar air heating device is suitable for application and popularization.

Description

technical field [0001] The invention relates to the field of heating equipment, in particular to a solar hot air equipment. Background technique [0002] Solar hot air equipment is generally used for indoor heating or drying of common materials. By using a flat-plate solar collector, the water is heated to 70-80°C, and the water is circulated between the flat-plate solar collector and the heat exchanger. Flow, use the blower to blow air to the heat exchanger, thereby generating hot air, which is used for indoor heating or drying of ordinary materials. [0003] As mentioned above, traditional solar hot air equipment uses water as a heat transfer medium, which causes more energy loss in the process of heat exchange, and the heat exchange efficiency is not high. At the same time, water boils when it reaches 100°C under standard pressure The maximum temperature of the hot air output by the traditional solar hot air equipment is limited. Therefore, the solar hot air equipment i...

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Problems solved by technology

[0003] As mentioned above, traditional solar hot air equipment uses water as a heat transfer medium, which causes more energy loss in the process of heat exchange, and the heat exchange efficiency is not high. At the same time, water boils when it reaches 100°C under standard pressure The maximum temperature of the hot air output by the traditional solar hot air equipment is limited

Therefore, the solar hot air equipment in the prior art can generally only be used for heating of residents and drying of common materials, and its heating efficiency is not high and the temperature of the hot air output is too low to make it of little use in industry

At the same time, traditional solar hot air equipment uses flat-plate solar collectors to collect solar energy. When the flat-plate solar collectors are damaged, they need to be replaced as a whole, which costs a lot, so it is difficult to promote

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