# US 5,706,796 A · Heat diffusion ovens

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- Number: US 5,706,796 A
- Document ID: US5706796A
- Status: Granted
- Kind: A
- Application number: 08/699,088
- Filed: 1996-08-16
- Granted: 1998-01-13
- Earliest claimed: 1996-08-16
- Inventors: Nivardo Blasoni Genero
- Web page: https://patentgrep.com/patent/US5706796A

## CPC

- F24C 15/32: Arrangements of ducts for hot gases, e.g. in or around baking ovens
- A21B 1/28: by gaseous combustion products
- F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- A21B: BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING (domestic baking equipment A47J37/00)

## Abstract

An oven structure that includes a housing with an internal refractory surface and two heat diffusion walls with apertures at spaced apart and parallel relationship with respect to each other defining a centrally disposed baking chamber and two combustion chambers. The apertures allow a predetermined amount of heat to pass through to the baking chamber without affecting the object being baked by direct contact with flames or other areas with excessive heat concentration. A uniform temperature is maintained within the baking chamber with the hot gases passing through the apertures to the baking chamber where high pressure is developed but the top with the hottest gases and push the mass of gases with a lower temperature down and into the exhaust system.

## Claims

### Claim 1

An oven structure, comprising:
A) housing means having a centrally disposed baking chamber, first and second adjacent combustion chambers sandwiching said baking chamber;
B) first and second heat diffusion walls separating said combustion chambers from said baking chamber, said first and second heat diffusion walls include each a plurality of openings wherein said first and second heat diffusion walls include a plurality of cooperating stackable members defining said openings in between adjacent members;
C) means for heating up the space within said combustion chambers; and
D) exhaust means that permits the heated gases inside said baking chamber to exit so that a substantially uniform temperature is maintained within said baking chamber.

### Claim 2 (depends on 1)

The oven structure set forth in claim 1, wherein said baking chamber and said first and second chambers include inner surfaces made out of a refractory material.

### Claim 3 (depends on 2)

The oven structure set forth in claim 2, wherein the area of said openings is between 10 and 90% of the area of said first and second diffusion walls.

### Claim 4 (depends on 3)

The oven structure set forth in claim 3, wherein the area of said openings is about 30% of the area of said first and second diffusion walls.

### Claim 5 (depends on 4)

The oven structure set forth in claim 4, wherein said exhaust means are connected to the lowermost part of said baking chamber.