Disclosed herein is a combination convection and steam oven having a three stage atomizer for breaking up supply water prior to vaporization. The atomizer includes a motor-driven fan having an atomizer cup at its hub which revolves with the fan about an axis of rotation. The atomizer cup has rectilinear or concave walls defining pockets having lengthwise slots at their corners. As the atomizer cup is rotated, supply water is fed into the cup so as to impact the inner surfaces and shear as it exits through the slots under centrifugal force, which directs the water through the fan blades. The supply water thereby is broken up by three separate actions prior to vaporization.

Combination oven with three-stage water atomizer

Cooking device (1) comprises at least one closable inner cooking chamber (2), at least one heating device, at least one element for circulating fluid at least in the inner cooking chamber, and at least one air-guiding element (4) with at least one front surface (6) facing the inner cooking chamber, at least one rear surface facing away from the inner cooking chamber and facing the fluid-circulating element, and at least one first opening (8) in the air-guiding element at least partly in the region of the fluid-circulating element. At least one device (20) for receiving and dispensing at least one cleaning, clear rinsing and/or antiliming agent is attached or provided in, in front of and/or behind the first opening in the air-guiding element. Independent claims are also included for: (1) Air-guiding element for the above cooking device; (2) Device for holding at least one device for receiving and dispensing at least one cleaning, clear rinsing and/or antiliming agent; and (3) Process for cleaning an inner chamber of the above cooking device.

Cooking device for cooking food comprises a device for receiving and dispensing a cleaning, clear rinsing and/or antiliming agent that is attached or provided in, in front of and/or behind a first opening in an air-guiding element

Dispositif d'echangeur thermique 1 de bruleur a gaz de four de cuisine, comprenant une partie tubulaire 2 de grand diametre formant chambre de combustion, deux conduites de petit diametre 4, 5 et un tronc biconique de raccordement 3 entre la partie tubulaire 2 de grand diametre et les conduites de petit diametre 4, 5, la partie tubulaire 2 de grand diametre, le tronc biconique de raccordement 3, et au moins une conduite de petit diametre 4, 5 formant un anneau ouvert laissant libre un espace central. A heat exchanger 1 for cooking oven gas burner, comprising a tubular portion 2 of larger diameter forming a combustion chamber, two small diameter pipes 4, 5 and a connecting biconical body 3 between the tubular part 2 of large diameter and small diameter pipes 4, 5, the tubular portion 2 of larger diameter, the biconical trunk connection 3, and at least one small diameter pipe 4, 5 forming an open ring, leaving free a central space.

Heat-exchange device for a gas burner.

of EP0926447The cooking oven has a compressor (10) to raise the temp. of the heat carrier fluid of hot air and/or steam by compression. It is positioned upstream of the heat carrier (3) round the recirculating fan blower (2). The heat carrier fluid is heated by a process heat carrier (16) and a regenerator (18) upstream of the compressor (10).

Cooking apparatus with heat-recirculation

Arrangement of a burner ( 2 ) and a heat exchanger ( 1 ), the heat exchanger ( 1 ) including a plurality of heat exchange elements ( 3 ) interconnected to each other with intermediate gaps, the heat exchanger ( 1 ) being arranged with an inlet ( 4′ ) and an outlet ( 5′ ), the burner ( 2 ) being connected at the inlet ( 4′ ) to the heat exchanger ( 1 ) for providing energy to the heat exchanger ( 1 ) by burning a fuel gas, the heat exchanger ( 1 ) being arranged, in use, for heat transfer firm an outer surface of the heat exchange elements ( 3 ) to process air as a secondary gas, the burner ( 2 ) being arranged to burn the fuel gas inside the heat exchanger ( 1 ), wherein the heat exchanger ( 1 ) is constructed from a high temperature material to allow, in use, heat transfer to the secondary gas by radiation of the heat exchange elements ( 3 ), the radiation being in a visible range of the spectrum, the heat exchanger having a surface temperature in the range of 450-1000° C.

Arrangement of burner and heat exchanger, and air-heating apparatus

The exchanger has a radial fan (10) which is surrounded by a burner (12). It also has a pipe (14) which is formed in at least one section to a freely cantilevered bend (16). Preferably the bend has an enlarged cross-section and the pipe sections which form the bend meet at an acute angle, the bend including a change of direction of 180 degrees . The preferred cross-section of the pipe in the region of the bend is an oval shape.

Arrangement of heat exchanger

A hot air heat exchanger comprises a heat exchanger housing having a floor, which is essentially formed by a ceiling of an outer chamber and has at least one heat exchanger pipe extending from the floor to a ceiling element having exhaust openings, each pipe is secured to an exhaust opening in the upper wall of the outer chamber and a burner is disposed in an inner chamber which is positioned inside of the outer chamber with a spacing between the wall of the inner chamber and the outer chamber to allow air to flow therethrough. The upper wall of the inner chamber is provided with an exhaust gas opening, which is aligned with the exhaust opening of the outer chamber, and both openings have peripheral walls that are tapered to form a Venturi-like nozzle for drawing air in the space between the inner and outer chambers into each pipe as the exhaust gas from the burner in the inner chamber flows into the pipe to pass up through an exhaust element in the ceiling of the heat exchanger housing.

Gerd Gumienny

Papers

Arrangement of heat exchanger

Hot air heat exchanger