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Title: Microwave heating apparatus and method

Abstract

An apparatus is provided for heating and melting materials using microwave energy, and for permitting them to solidify. The apparatus includes a microwave energy source, a resonant cavity having an opening in its floor, a microwave energy choke encompassing the opening in the floor of the cavity, a metal container to hold the materials to be heated and melted, a turntable, and a lift-table. During operation, the combined action of the turntable and the lift-table position the metal container so that the top of the container is level with the floor of the cavity, is in substantial registration with the floor opening, and is encompassed by the microwave energy choke; thus, during operation, the interior of the container defines part of the resonant cavity. Additionally, a screw feeder, extending into the cavity and sheltered from microwave energy by a conveyor choke, may convey the materials to be heated to the container. Also, preferably, the floor of the resonant cavity may include perforatins, so that the offgases and dust generated in the apparatus may be removed from the resonant cavity by pulling outside air between the container choke and the exterior wall of the container into the resonant cavity and outmore » from the cavity through the perforations.« less

Inventors:
 [1];  [2];  [3]
  1. (Boulder, CO)
  2. (Thornton, CO)
  3. (Brighton, CO)
Issue Date:
Research Org.:
ROCKWELL INTERNATIONAL CORP
OSTI Identifier:
867454
Patent Number(s):
4940865
Assignee:
United States of America as represented by Department of Energy (Washington, DC) OSTI
DOE Contract Number:  
AC04-76DP03533
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
microwave; heating; apparatus; method; provided; melting; materials; energy; permitting; solidify; source; resonant; cavity; floor; choke; encompassing; metal; container; hold; heated; melted; turntable; lift-table; operation; combined; action; position; top; level; substantial; registration; encompassed; interior; defines; additionally; screw; feeder; extending; sheltered; conveyor; convey; preferably; perforatins; offgases; dust; generated; removed; pulling; outside; air; exterior; wall; perforations; outside air; microwave energy; energy source; resonant cavity; microwave heating; wave energy; heating apparatus; metal container; exterior wall; combined action; /219/

Citation Formats

Johnson, Andrew J., Petersen, Robert D., and Swanson, Stephen D. Microwave heating apparatus and method. United States: N. p., 1990. Web.
Johnson, Andrew J., Petersen, Robert D., & Swanson, Stephen D. Microwave heating apparatus and method. United States.
Johnson, Andrew J., Petersen, Robert D., and Swanson, Stephen D. Mon . "Microwave heating apparatus and method". United States. https://www.osti.gov/servlets/purl/867454.
@article{osti_867454,
title = {Microwave heating apparatus and method},
author = {Johnson, Andrew J. and Petersen, Robert D. and Swanson, Stephen D.},
abstractNote = {An apparatus is provided for heating and melting materials using microwave energy, and for permitting them to solidify. The apparatus includes a microwave energy source, a resonant cavity having an opening in its floor, a microwave energy choke encompassing the opening in the floor of the cavity, a metal container to hold the materials to be heated and melted, a turntable, and a lift-table. During operation, the combined action of the turntable and the lift-table position the metal container so that the top of the container is level with the floor of the cavity, is in substantial registration with the floor opening, and is encompassed by the microwave energy choke; thus, during operation, the interior of the container defines part of the resonant cavity. Additionally, a screw feeder, extending into the cavity and sheltered from microwave energy by a conveyor choke, may convey the materials to be heated to the container. Also, preferably, the floor of the resonant cavity may include perforatins, so that the offgases and dust generated in the apparatus may be removed from the resonant cavity by pulling outside air between the container choke and the exterior wall of the container into the resonant cavity and out from the cavity through the perforations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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