US 5,970,209 A · Roasting apparatus

Abstract

Disclosed is a roasting apparatus allowing automation of a roasting process including steps of charging a raw material, roasting it, and carrying a roasted product. A carrying-in port is opened in the bottom of a quantitative tank 1 for storing a raw material to be roasted, and a lid 34 is provided at an edge portion of the carrying-in port. A motor-driven cylinder 33 for opening/closing the lid 34 on the basis of an electric signal is provided to the lid 34. A roasting kiln 40 is disposed under the quantitative tank 1. An opening 63 is provided in the roasting kiln 40 and lids 42 are provided at edge portions of the opening 63. A kiln opening/closing link and a motor-driven cylinder 58 for opening/closing the lids 42 are provided outside the roasting kiln 40. A carrying passage 120 is provided under the roasting kiln 40. Burners 41 are disposed near the carrying passage 120 and electric heaters 71 are disposed around the rotational shaft 52. The outer surface of the electric heater 71 is covered with a far infrared radiation material. Slip rings 73 are provided around portions, positioned outside the roasting kiln, of the rotational shaft 52.

Claims9

Dependent claims

A roasting apparatus comprising:

a roasting kiln formed into a cylindrical shape having a non-circular cross section;
a rotational shaft penetrating the center of said roasting kiln;
an electric heater disposed at a portion, positioned in said roasting kiln, of said rotational shaft;
and
slip rings, disposed around said rotational shaft, for carrying a current to said electric heater.

2 more elements

A roasting apparatus comprising:

a roasting kiln formed into a cylindrical shape having a non-circular cross section;
an opening, provided in said roasting kiln, for carrying a raw material to be roasted in said roasting kiln and carrying a roasted product out of said roasting kiln;
a kiln lid provided at an edge portion of said opening;
a kiln lid opening/closing mechanism, provided on an outer side surface of said roasting kiln, for opening/closing said kiln lid while being supported by said rotational shaft;
a carrying passage, provided under said roasting kiln, for receiving said roasted product from said opening of said roasting kiln when said opening faces down;
heating means for heating said roasting kiln, said means being composed of at least either burners disposed on at least one of both the sides of said carrying passage or an electric heater disposed at a portion, positioned inside said roasting kiln, of said rotational shaft;
and
slip rings disposed around portions, positioned outside said roasting kiln, of said rotational shaft, said slip rings being adapted to carry a current to actuating means for actuating said kiln lid opening/closing mechanism and to carry a current to said electric heater.

5 more elements

Dependencies are inferred from the claim text.

Roasting apparatus

Life of this patent

Roasting apparatus

Life of this patent

Abstract

Claims9