SU1276886A1 - Sun drier - Google Patents

Abstract

A gel dryer containing a horizontal cylindrical chamber with a holder for the material being dried inside and a solar collector on the outside that have pipes for supplying the outside and the outlet of the heated air to the material being dried, in order to intensify the processes of drying and heating the air, the collector consists of uncooperative a longitudinal sections, equipped with thermal sensors, in the place of connecting the nozzle of the heated air to the solar collector, the air collector is installed in the form of a rotary valve logo sector covering the two manifold sections, and the holder is designed as a rotating perforated drum arranged like vozduhootbornik manifold and coaxial with the chamber.

Description

The invention relates to a drying technique, namely, equipment intended for drying agricultural products using solar energy, and can be used in agriculture, fruit and vegetable, and tea industries.

The purpose of the invention is to intensify the processes of drying and heating the air.

Figure 1 presents helio-dryer; figure 2 - section aa in figure 1; on fig.Z - view B in figure 1.

The solar dryer contains a pipe 1 for supplying outside air, a corrugated absorbing surface 2 of the solar collector 3, a transparent covering 4 of the collector, a heat insulating gasket 5, a perforated rotating drum 6, an air collector 7 in the form of a rotary hollow sector, a pipe 8 for discharging heated air, an actuator 9 devices 10 and 11 for loading and unloading the product, respectively, a horizontal cylindrical chamber 12, a diffuser 13 for supplying heated air to the material being dried, the heater 14, eploizoliruyuschie collector partition 15, temperature sensors 16, the holes 17 for discharging heated air from longitudinal sections 18-21 reservoir 3. The cylindrical chamber, a manifold air-sampler and a drum mounted coaxially.

Solar dryer works in the following way.

External air is blown by a fan (not shown) through pipe 1 to the appropriate section of the solar collector 3 heated by solar radiation. The air in the collector section is heated, flushing the corrugated surface 2. The air heating level is monitored by thermal sensors 16 installed in section 18-21. After the air is heated to the desired temperature, a thermal sensor is pulsed by the actuator 9, through which the air collector 7 is turned and

through the corresponding openings 17, heats the heated air out of the respective sections, through the nozzle 8, the air is supplied through the heater 14 and the diffuser 13 into the horizontal cylindrical chamber 12.

The supply of heated air to chamber 12 occurs in pairs by sequential connection of the maximum heated two sections of the solar collector to the air path of the solar helium through thermal sensors 16 and air collector 7. The latter fits tightly to the openings 17. The dried material is fed through the charging device 10 into the cavity of the perforated drum 6, which drive assistance (not shown) is given in

in rotation. The material, being stirred and evenly washed with hot air, moves along the axis of the drum from the point of loading to the place of discharge, is dried and discharged from the drum through the discharge device 11. The solar thermal dryer is equipped with a heater 14 to reheat, if necessary, air to the desired temperature.

Thus, the presence of a sectional collector 3 and the possibility of pairwise sequential inclusion of the most heated two of them into the air path of the helio-dryer makes it possible to rationally use solar energy during the day and heat the drying agent to the maximum possible temperature. This allows us to significantly intensify the process of drying the material in the proposed solar dryer. The drying process is also significantly intensified due to an increase in the interfacial contact between the material being dried, the material and the drying agent under the conditions of the mixing of the material in the rotating drum.

The mixing of the material also ensures its uniform washing with a drying agent, i.e. uniform drying of the product and thereby improving its quality.

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Compiled by I. Komarova

Editor N. Kishtulints.Techra I. VeresKorrektor A. Obruchar

Order 6654/31 Circulation 634 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP - «Patent, Uzhgorod, st. Project, 4

figs

Claims (1)

A HELI-DRYER, containing a horizontal cylindrical chamber with a holder of the dried material inside and a solar collector outside, having nozzles for supplying external and removal of heated air to the dried material, characterized in that, in order to intensify the processes of drying and heating of air, the collector consists of longitudinal sections that do not communicate with each other equipped with temperature sensors, in the place where the heated air outlet pipe is connected to the solar collector, an air sampler is installed in the form of a rotary hollow anector, covering two sections of the collector, and the holder is made in the form of a rotating perforated drum, located in the same way as the collector and the air intake, coaxial with the camera. fie. 1 SU „„ 1276886