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Depressurization Type Drying Machine and Method for Drying Lumber Using the Same

  • US 20080066340A1
  • Filed: 08/29/2005
  • Published: 03/20/2008
  • Est. Priority Date: 08/31/2004
  • Status: Abandoned Application
First Claim
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1. A depressurization type drying machine including:

  • a drying chamber in which a ceiling portion, sidewall portions, and a floor portion are formed to be a dual-structure composed of an outer wall and an inner wall;

    a heat insulation layer formed between the outer wall and the inner wall; and

    a sealing type door disposed at the front sidewall portion of the drying chamber, and in which the interior of the drying chamber is depressurized, and a material to be dried in the drying chamber is dehumidified and dried at a low temperature;

    wherein at least the ceiling portion and sidewall portions are formed roughly like a circular arc swelled outwardly, and includes;

    reinforcement ribs disposed along the outer circumference of the inner wall parallel to and/or in orthogonal to the lengthwise direction of the drying chamber between the respective outer walls and inner walls of the ceiling portion, the sidewall portions and the floor portion;

    a dehumidifier disposed at the rear wall side of the drying chamber;

    an outdoor compressor interconnected with the dehumidifier;

    an outdoor vacuum pump interconnected with the drying chamber for depressurizing the interior thereof;

    a rectification plate disposed apart from the inner wall on the ceiling portion for forming a ceiling air path;

    a plurality of air pores drilled in the rectification plate; and

    a heater disposed on the ceiling portion of the drying chamber;

    wherein the rectification plate is spaced from the inner wall at both sides in the widthwise direction and is opened, the ceiling air path communicates with an air feeding duct of the dehumidifier at the rear wall of the drying chamber, and the air circulating unit disposed on the ceiling portion of the drying chamber includes a blower disposed at the rear wall side of the drying chamber;

    an air pipe connected to the blower and disposed in parallel to the lengthwise direction of the drying chamber at both sides of the ceiling portion; and

    a plurality of air jetting pores drilled in the air pipe.

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