Lumber drying kiln

Abstract

A lumber drying kiln comprises a kiln body which is provided with a main kiln door. The kiln body is internally provided with at least one set of air feeding device and heating device. A plurality of exhausting devices are arranged in the kiln body. A temperature and humidity detecting device and a moisture content detecting device are arranged in the kiln body. According to the lumber drying kiln, the temperature in the kiln is even by means of the air feeding and heating mode, a steam spraying pipe is matched, the temperature and humidity in the kiln are easy to adjust and control, the energy utilization rate is high, and the energy conservation effect is good; an air speed field, a temperature field and a humidity field are uniform in distribution, and the drying uniformity is good; the drying efficiency is high, and the comprehensive technological economic performance is good. After the lumber drying kiln is adopted, the drying cycle is shortened by 33%, color changing, decaying and worm damage are zero, internal cracking is zero, end cracking and surface cracking is 0.6%, deformation is also greatly relieved, and the internal stress is fully eliminated.

Description

technical field [0001] The invention relates to the field of wood drying, in particular to a wood drying kiln. Background technique [0002] There are many ways to dry wood, which are usually divided into two categories: natural drying and artificial drying. Natural drying is to pile up the wood in an open space or in a ventilated shed, use the air as the heat and moisture transfer medium, and use the heat of solar radiation to gradually discharge the water in the wood to a certain degree of drying. The disadvantages are: drying conditions such as temperature and relative humidity cannot be controlled artificially, the drying time is longer, and it cannot be dried to a lower moisture content, and it occupies a large area and takes up a lot of money. Decay and insects, as well as defects such as cracking and deformation. Artificial drying refers to the use of artificial methods to create suitable conditions for wood drying in certain equipment, such as temperature, relative...

AI Technical Summary

Problems solved by technology

The disadvantages are: drying conditions such as temperature and relative humidity cannot be controlled artificially, the drying time is longer, and it cannot be dried to a lower moisture content, and it occupies a large area and takes up a lot of money. Decay and insects, as well as defects such as cracking and deformation

However, the drying kiln also has the problems of high cost and uneven drying.

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