Ovens

Claim 2

An oven for heating or baking products by circulation of hot air having a top, bottom, back, front and two sides enclosing an oven space, two hollow members located in the oven space one on each side of a product heating space located centrally in the oven space, means for introducing heated air into said hollow members, said hollow members having openings discharging into said space, and means for moving said hollow members in endless paths so that the discharge openings also move in endless paths, said openings being so disposed as to cover substantially the whole side area of the product space during their movements, the openings in the two rotors facing each other on opposite sides of the products space.

Claim 3

An oven as claimed in claim 1, wherein several such openings are provided in each hollow member so that the endless paths cover substantially the whole area of the side of the product space.

Claim 4

An oven as claimed in claim 1, wherein the hollow members are hollow rotors so that the endless paths are circles.

Claim 5

An oven as claimed in claim 1, wherein the hollow members are rotors in the form of elongated boxes extending over a diameter of a circle.

Claim 6

An oven as claimed in claim 2 wherein the openings in the hollow member on one side of the products space are offset from those in the hollow member on the other side so that each part of the goods receives a current of air from one side followed by a current of air from the opposite side.

Claim 7

An oven as claimed in claim 2, wherein the hollow members are in the form of hollow rotors and the oven has air ducts which feed the heated air to the rotors one such duct being provided on each side of the product space on which the rotors are rotatably mounted, and a common chamber at the top of the oven to which the ducts are connected, which chamber has a hot air inlet.

Claim 8

An oven as claimed in claim 1, wherein each opening is provided with an adjustment member for adjusting the size of the opening.

Claim 9

An oven as claimed in claim 1, wherein each opening has lips directing the air at an angle of 70* - 80* to the adjacent vertical plane.

Claim 10

An oven as claimed in claim 1 having a heat exchanger and means whereby hot air is withdrawn from the product space and is circulated through the heat exchanger back to said hollow members.

Claim 11

An oven as claimed in claim 9 wherein two flat chambers are provided, one above the other, at the upper part of the oven, one of which is connected with the hollow members to supply hot air thereto and the other of which receives hot air from the product space and is connected to the heat exchanger to discharge this air into the heat exchanger.

Claim 12

An oven as claimed in claim 1 wherein hot air is withdrawn from the product space by means including lower exit openings at the lower part of the product space and by four upper exit openings one adjacent each upper corner of the product space.

Claim 13

An oven as claimed in claim 11 having a duct that extends front to back of the floor of the oven the lower exit openings being at opposite ends Of said duct and a vertical duct which connects the first-mentioned duct to the lower of said two chambers and into which said upper exit openings also open.

Claim 14

An oven as claimed in claim 3 wherein each rotor comprises a circular central part having radially disposed slotlike openings and two radial arms in line with each other, each having additional openings.

Claim 15

An oven for baking edible products comprising a chamber having door, a product space in said chamber, a hollow rotor at each side of the product space within the oven each said hollow rotor having a central hollow part and hollow arms extending out from the hollow central part, means for rotating the rotors about the axis of the hollow central part, heater means for heating air, means for conducting air from the product space to the heater means, means for conducting heated air from the heater means to the hollow rotors, openings in each said arms and in each said central part, said openings facing towards the product space and arranged to traverse approximately the whole area of the product space including the area of said central parts during rotation of the rotors so that hot air passes through the openings into the product space.

Claim 16

An oven for baking edible products comprising a chamber having door, a product space in said chamber, a hollow rotor at each side of the product space within the oven each said hollow rotor having a central hollow part and hollow arms extending out from the hollow central part, means for rotating the rotors about the axis of the hollow central part, heater means for heating air, means for conducting air from the product space to the heater means, means for conducting heated air from the heater means to the hollow rotors, openings in each said arms and in each said central part, said openings facing towards the product space and arranged to traverse approximately the whole area of the product space including the area of said central parts during rotation of the rotors so that hot air passes through the openings into the product space.