IP Library › Granted Patent US 12,324,083
Granted Patent B2
US 12,324,083 · App. 17/623,737 · Granted Jun 3, 2025

Microwave heating system with suppression tunnel and related features

Inventors: Drew J. Frederixon (Rockland, WI); Jacob G. Hehir (Holmen, WI); Kenneth D. Jaeger (Cameron, WI); Michael R. Byrnes (Sarona, WI); Gerald H. Reinke (La Crosse, WI); Vernon R. Hegg (Plymouth, MN)
Assignee: A.L.M. HOLDING COMPANY
H05B6/76A23B2/001A23B2/97E01C19/08E01C19/20H05B6/6426H05B6/784H05K9/0056H05K9/009A23V2002/00E01C19/1004E01C2019/208H05B6/707H05B2206/044H05B2206/046
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Quick Facts
Patent No.
US 12,324,083
App. No.
17/623,737
Granted
Jun 3, 2025
Kind
B2
Abstract

A system for processing material, including at least one microwave generator, at least one microwave guide operatively connecting the at least one microwave generator to at least a first conveyor unit, and the first conveyor unit provided in a first housing that comprises at least one opening configured to receive microwave energy via a first microwave guide. The first conveyor unit is configured to receive and process a quantity of material, which includes heating the material to a first temperature by applying microwave energy to the material within the first housing.

Claims (39)

1. A system for processing material, comprising:

at least one microwave generator;

a first conveyor unit;

at least a first microwave guide operatively connecting the at least one microwave generator to the first conveyor unit;

the first conveyor unit provided in a first housing that comprises at least one opening configured to receive microwave energy via the first microwave guide; and

at least one microwave suppression tunnel comprising at least one flexible and/or movable microwave reflecting component within the tunnel, wherein the microwave reflecting component is a mesh flap configured to absorb, deflect, and/or block microwave energy,

wherein the first conveyor unit is configured to receive and process a quantity of material, the system being configured to apply microwave energy to the material within the first housing at a first processing step, and

wherein at least a portion of the at least one microwave reflecting component is configured to be deflected as the material passes through the tunnel and then to return to a resting, closed position when the material is no longer passing through the tunnel.

2. The system of claim 1 , further comprising a second conveyor unit, the second conveyor unit provided in a second housing that comprises at least one opening configured to receive microwave energy via a second microwave guide, wherein the second conveyor unit is configured to receive the quantity of material, and is further configured to apply microwave energy to the material within the second housing at a second processing step.

3. The system of claim 1 , wherein the flexible and/or movable microwave reflecting component comprises metallic shielding.

4. The system of claim 1 , wherein the flexible and/or movable microwave reflecting component is coated with a protective material.

5. The system of claim 1 , wherein the system is modular and portable.

6. The system of claim 1 , wherein the tunnel is either:

a) an inlet microwave suppression tunnel associated with an inlet of the first conveyor unit, or

b) an outlet microwave suppression tunnel associated with an outlet of the first conveyor unit.

7. The system of claim 1 , wherein the first processing step comprises heating the material.

8. The system of claim 7 , wherein the first processing step comprises heating the material to a first temperature.

9. The system of claim 2 , wherein the first processing step comprises heating the material to a first temperature, and wherein the material is heated to a second temperature at the second processing step.

10. The system of claim 9 , wherein the second temperature is greater than the first temperature.

11. A method, comprising the steps of:

receiving a quantity of material at a first conveyor unit, wherein the material passes through at an inlet microwave suppression tunnel before entering the first conveyor unit;

transporting the quantity of material along the first conveyor unit causing microwaves emitted by at least one microwave generator operatively connected to a respective microwave guide to process the quantity of material within the first conveyor unit when the emitted microwaves are absorbed by at least a portion of the quantity of material at a first processing step within the first conveyor unit; and

causing the processed quantity of material to exit through an outlet microwave suppression tunnel,

wherein at least one of the inlet or the outlet microwave suppression tunnel comprises at least one flexible and/or movable mesh flap within the respective inlet/outlet microwave suppression tunnel,

wherein the at least one mesh flap is configured to absorb, deflect, and/or block microwave energy, and

wherein at least a portion of the at least one mesh flap is configured to be deflected as the quantity of material passes through the respective inlet/outlet microwave suppression tunnel and then to return to a resting, closed position when the quantity of material is no longer passing through the respective inlet/outlet microwave suppression tunnel.

12. The method of claim 11 , further comprising:

receiving the quantity of material at a second conveyor unit provided in a second housing; and

performing a second processing step to the quantity of material within the second conveyor unit using the at least one microwave generator coupled to the second housing of the second conveyor unit.

13. The method of claim 11 , wherein a processing speed of at least one conveyor unit is adjusted.

14. The method of claim 11 , wherein the first processing step comprises heating the material.

15. The method of claim 11 , wherein the first conveyor unit comprises an auger, and wherein the quantity of material is transported along the first conveyor unit by causing the auger to rotate.

16. The method of claim 11 , wherein both the inlet microwave and the outlet microwave suppression tunnel each comprise at least one flexible and/or movable mesh flap within the respective inlet/outlet microwave suppression tunnel,

wherein the at least one inlet/outlet mesh flap is configured to absorb, deflect, and/or block microwave energy, and

wherein the at least one inlet/outlet mesh flap is configured to be deflected as the quantity of material passes through the respective inlet/outlet microwave suppression tunnel and then to return to a resting, closed position when the quantity of material is no longer passing through the respective inlet/outlet microwave suppression tunnel.

17. The method of claim 14 , wherein the first processing step comprises heating the material to a first temperature.

18. The method of claim 12 , wherein the first processing step comprises heating the material to a first temperature, and wherein the material is heated to a second temperature at the second processing step.

19. The method of claim 18 , wherein the second temperature is greater than the first temperature.

20. The method of claim 18 , wherein at least one of the first temperature and the second temperature is a target temperature according to a specification.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 12, 2022
From: FREDERIXON, DREW J.; HEHIR, JACOB G.; JAEGER, KENNETH D.; BYRNES, MICHAEL R.; REINKE, GERALD H.; HEGG, VERNON R.
To: A.L.M. HOLDING COMPANY
Reel/Frame 058626/0519 →
Continuity (2)
Provisional Application 62869305 · Jul 1, 2019
Related Publication 20220256662A1 · Aug 11, 2022
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