Processing apparatus, in which a product is fried in a frying oil, frying oil is pumped by a pump in a flow direction through a microwave chamber, the microwave chamber includes at least one solid-state radio frequency source, the frying oil is configured to flow out of the frying oil chamber towards the microwave chamber where the frying oil is heated and then the frying oil is configured to flow back into the microwave chamber, the flow direction of the of the frying oil in the frying oil chamber is the same as a flow direction of the product that is transported by the transport means, the processing apparatus includes a filter in the tube of the microwave chamber, and energy generated by the at least one solid-state radio frequency source to heat the frying oil depends on a desired temperature of the frying oil.

A fryer includes

a frying tank adapted to contain a cooking liquid;

a pump adapted to suck from the frying tank, by suction duct, a portion of the cooking liquid and adapted to discharge into the frying tank, by a discharge duct, the portion of the cooking liquid;

The fryer also includes a heater associated with the suction duct and/or the discharge duct and adapted to heat the cooking liquid flowing through the suction duct and/or through the discharge duct, the cooking liquid being heated only by the heater; and

at least one mixer associated with the suction duct and/or discharge duct and adapted to mix cooking liquid flowing through the suction duct and/or discharge duct. The mixer is placed immediately upstream or downstream, or in correspondence with the heater to improve the heat exchange of the cooking liquid with the heater.

The present invention relates to a processing apparatus, in which a flying oil is heated, disinfected and/or pasteurized, sterilized. The present invention further relates to a method to treat a flying oil with radio-frequency wave.

Frying is performed in two stages so as to dip a retainer in frying oil at a prescribed dipping ratio and then to dip the whole of the retainer in the frying oil, and in addition, flow rates of the frying oil supplied from an upstream side and a downstream side of a frying oil tank and a surface level of the frying oil are controlled. Therefore, a noodle lump can be prevented from peeling off and floating from the bottom of the retainer before fixing the shape of the noodle lump due to a pressure applied by the frying oil so as not to impair the shape of the noodle lump, and as a result, frying efficiency or production efficiency can be improved. Besides, a noodle lump that has a very small number of coarse or dense portions in a distribution of noodle strings can be stably produced.

A deep fat fryer with a vat containing cooking oil for frying food including an integrated circulating pump housing below the oil level connected to a separate heat exchanger wherein the cooking oil is circulated from the cooking vat through the heat exchanger then back into the cooking vat. Circulating pump motor, pump inlet, and pump impeller assembly is mounted with the pump motor above the cooking oil level and the pump assembly is removable from the cooking vat and pump housing without the need to remove the oil from the cooking vat.

A heating system for a fluid includes a double helical coil of continuous tube, a burner, and a containment structure. The double helical coil has an inlet and an outlet disposed at a bottom end and a plurality of external radial fins spaced apart along a length thereof. The burner is centered in the double helical coil and disposed above the inlet and the outlet. The containment structure has a closed bottom end and a flue opening at an upper end. The containment structure is positioned above the inlet and the outlet to enclose the double helical coil and the draft-type burner. The burner heats the continuous tube to evenly transfer heat to the fluid while the fluid flows through the continuous tube from the inlet to the outlet.

A fryer unit combination includes a frying fluid vat and an associated heat exchange system whereby increased or greater efficiencies and/or heat transfers can be obtained and realized. The heat exchange system includes a first heat exchanger arrangement at least in part disposed within the frying fluid vat and a second heat exchanger arrangement disposed externally to the frying fluid vat. In the first heat exchanger arrangement, a heat exchange tube is in heat flow communication with a combustion chamber wherein an associated gaseous fuel burner is at least in part housed. The second heat exchanger arrangement includes at least a first side heat exchanger disposed externally adjacent the first side of the frying fluid vat. The side heat exchanger(s) may permit intake of an oxygen-containing gas such to preheat the oxygen-containing gas prior to entrance into the combustion chamber.

A substantially closed loop filtration and convection system is configured to move fluid/oil volume within a fryer vat. The vat has a flow directed inlet, which directs flow of cooking fluid in a direction across the bottom of the vat directing the flow of oil and crumbs/debris across the vat, up and across a flow separation portion toward and into a cleaning zone portion of the vat. A crumb tray or crumb/debris catch system is disposed in the cleaning zone adjacent to the vat.

A metal heat exchange tube assembly for a fryer cooking channel of a hot oil fryer for food-process lines has a plurality of elongate, rectangular, longitudinally-extending heat exchange tubes with open inflow and outflow ends; a laterally-extending abbreviated rectangular inflow-manifold tube with a plurality of apertures in a sidewall; and a laterally-extending abbreviated rectangular outflow-manifold tube with the same. The plurality of heat exchange tubes are joined to the inflow-manifold and outflow-manifold tubes with respective alignment among the open ends of the heat exchange tubes and the apertures in the sidewalls of the manifold tubes. The heat exchange tubes comprise a composite construction of an elongate, square-U shaped channel having a web bottom wall and flange sidewalls of a given uniform thickness, and an elongate closure strip welded along spaced seams to the exposed upper edges of the flanges of the channel, thereby forming a thermal oil conduit.

A fryer for frying pizza includes a flying tank designed to contain cooking oil, immersion means and pushing means. The frying tank includes an input and an outlet. The input houses a first conveyor belt arranged to introduce a product in the tank. The outlet houses the first conveyor belt or a third conveyor belt to extract the product from the tank. The immersion means are arranged to regulate immersion of the product in the cooking oil during at least a portion of a relative path from the input to the outlet of the tank. The pushing means are configured for moving the product from the input to the outlet.