Patent ID: 8415592

Claim:
An oven comprising: a. a first chamber; b. a second chamber; c. a conveyor means with a width for guiding products from an inlet through the first chamber and the second chamber to an outlet, wherein the conveyor means are at least partially arranged in a helical path, d. a temperature control means for controlling the temperature and/or humidity in the first chamber and the second chamber using a fluid, the temperature control means including: i. a heater to heat the fluid and ii. a duct to introduce the heated fluid into the first chamber and the second chamber, e. a fan that circulates fluid so that there is fluid-motion in the oven; and f. a means to adjust the flow distribution over the width of the conveyor means depending on at least one process parameter and/or a recipe; and wherein the second chamber includes a second helical path, and the two helical paths are connected by a straight conveyor means section, and wherein the means are located over the conveyor means.