Patent ID: 8726794

Claim:
A frying device for carrying out a frying process for food products comprising: a frying oil reservoir to be filled with a volume of frying oil; a food product carrier which is at least partially immersable in the frying oil in the frying oil reservoir; at least one heating unit having at least one heating element which is positioned at least partially inside the frying oil reservoir and which has a heating surface which is in contact with the frying oil in the frying oil reservoir during the frying process, wherein the at least one heating unit is heated by a thermal heating fluid during the frying process, wherein the at least one heating unit comprises a frying oil duct with a channel-heating surface, in which the frying oil duct is formed by a tube and extends substantially within the frying oil reservoir, in which the channel-heating surface is in heat-exchanging connection with the heating surface of the at least one heating element, in which, during the frying process, the frying oil duct is in flow communication with the volume of frying oil in the frying oil reservoir and in which the at least one heating unit furthermore comprises a pump for passing frying oil through the frying oil duct, so that by means of the channel-heating surface heat is supplied to the frying oil which is passed through the frying oil duct, and wherein the at least one heating element comprises a tube-in-tube element having an inner tube which extends inside an outer tube, which tube-in-tube element defines a space between the inner tube and the outer tube which forms a channel for the passage of a heat-carrying medium.