SU74844A1 - Continuous duct dryer for infrared drying - Google Patents

Description

The present invention relates to continuous channel driers for drying, by infrared rays.

According to the invention, reflector-type reflectors with heating spirals have a lateral position along the dried product and are less often placed at the entrance to the channel than at the exit from the channel.

The drawing shows the scheme of the proposed sush | ilki.

Tape 1, transporting tea with a sm-cm, passes through the dry 1 chamber 2, which is a series of screens 3 / cupping: pas, made of white tin or aluminum vaporized aluminum and stacked lope rims for movement of the tape. The screens 3 are enclosed in a secondary reflective screen 4, made in the form of a box. The latter is reinforced in frame 5. To remove moisture in the chamber, side extracts 6 are arranged with forced or natural thrust. Inside the screens 3 are stretched spiral Nichrome tapes 7, which are sources of infrared rays when an electric current is passed through them.

The radiant energy of the heated spirals 7, falling on a layer of tea, creates a number of temperature fields.

Each particle of the tea lying in any place (on the tape, when moving, will pass through all temperature zones, and this will ensure its drying.

For a gradual increase in temperature and for obtaining an energy concentration inside the chamber, the screen sections 3 are located at the beginning of the chamber less frequently, and more often in the second half of the chamber.

To regulate the temperature, it is envisaged to partially shut off the sections in groups by one OR two, as well as control the degree of heat of the coils.

Subject invention

A continuous channel for drying infrared rays, which is different from TeMi, is that the cattle type reflectors with heating coils have a transverse arrangement along the dried product and are less often placed at the entrance to the channel than at the exit from it.

615 I -gout V