×

Lumber drying apparatus

  • US 3,902,253 A
  • Filed: 01/16/1974
  • Issued: 09/02/1975
  • Est. Priority Date: 01/17/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. A lumber drying apparatus comprising an outer wall structure defining a drying section having at least one lumber transfer path, said outer wall structure preventing leakage of hot air from said drying section, curtain means in said drying section to divide the same along said lumber transfer path into a plurality of drying compartments, heating means for heating the interior of each said drying compartment, and means for producing circulation of hot air in each said drying compartment including a first fan located on one side of the lumber transfer path substantially at a position in a transverse central plane of the compartment, second and third fans located on the other side of the lumber transfer path substantially at positions symmetrical to each other with respect to said transverse central plane, first deflecting means disposed on opposite sides of said first fan for dividing the flow of hot air with respect to said first fan, said first deflecting means including side walls which incline inwardly into the compartment in a direction away from the center thereof towards the second and third fans, and second deflecting means disposed between said second and third fans for redirecting the flow of hot air between said second and third fans and said first fan such that two circulating paths of air traveling in opposite directions are produced in each compartment, said second deflecting means including further side walls which incline inwardly into the compartment in a direction away from the second and third fans towards the center of the compartment.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×