A power supply device that allows individual control of an output voltage of a main transformer and an output voltage of a teaser transformer while utilizing output characteristics of the respective transformer when a Scott connected transformer has control equipment arranged on the input side thereof, including first control equipment arranged in one of two phases of the main transformer on the input side in order to control a voltage or a current and second control equipment arranged in one end of a primary coil of the teaser transformer on the input side in order to control a voltage or a current, the control equipment controlling an output voltage of the main transformer and an output voltage of the teaser transformer individually.

The present invention is intended to prevent lifetime degradation of a conductor tube by reducing heat deterioration at output ports of the conductor tube. A superheated steam generator generates superheated steam by heating steam flowing through a spirally wound cylindrical conductor tube. The conductor tube is axially short-circuited and subjected to induction heating by a magnetic flux generation mechanism disposed on one or both of inner and outer sides of the conductor tube. Output ports of the conductor tube are disposed at axial midportions of the conductor tube.

A steam generator to convert liquid into vapor having an inlet to receive liquid, a heating element, and an outlet to discharge vapor. The steam generator may further have a plurality of pathways to facilitate the flow of liquid or vapor through the steam generator. In one embodiment, one or more filter elements disposed in a chamber of the steam generator may help with preventing the buildup of precipitated particulates in the steam generator. In an embodiment, an exit conduit may be configured to further help with preventing particle buildup in the steam generator. In some embodiments, a body may have an inner and outer body and multiple chambers through which liquid or vapor passes as liquid or vapor travels through the steam generator.

A superheated steam generating apparatus (12) is made of a material capable of generating heat upon energization. The superheated steam generating apparatus (12) comprises a superheated steam generating pipe (12) which includes a flow path (129) in which steam can flow and transfers the heat to the steam in the flow path (129) to generate superheated steam. In the superheated steam generating apparatus (12), a length of a cross-sectional shape of a wall forming the flow path (129) of the superheated steam generating pipe (12) is longer than a length of a circumference of an exact circle having a same sectional area as a sectional area of the flow path (129).

A steam generator and a cooking apparatus including a steam generator are provided. The steam generator may include a heater, an inflow tube, a steam generation tube, and a discharge tube and an adaptor unit connected to the steam generator may be provided. The inflow tube and the discharge tube and the discharge tube may be connected at a predetermined angle to the adaptor unit. Thus, the steam generation tube connecting the inflow tube to the discharge tube may also be inclined.

A steam generator and a cooking apparatus having a steam generator are provided. The steam generator may include a steam generation tube; an inflow tube configured to provide a passage so that water is introduced into the steam generation tube; at least one heater disposed on an outer surface of the steam generation tube to heat the water and generate steam; a discharge tube disposed above the steam generation tube to provide a passage so that the steam is discharged; and an adaptor unit configured to branch discharge water and the steam discharged from the discharge tube. The discharge tube may have an inner diameter that gradually increases in an upward direction.

The present invention allows individual control of an output voltage of a main transformer and an output voltage of a teaser transformer while utilizing output characteristics of the respective transformer when a Scott connected transformer has control equipment arranged on the input side thereof, including first control equipment arranged in one of two phases of the main transformer on the input side in order to control a voltage or a current and second control equipment arranged in one end of a primary coil of the teaser transformer on the input side in order to control a voltage or a current, the control equipment controlling an output voltage of the main transformer and an output voltage of the teaser transformer individually.

Vaporizer cores are disclosed including a housing and a chamber where the chamber includes a porous lattice structure that is thermally conductive. Further, the housing and the chamber including the porous lattice structure are formed as a single integral structure. Three-dimensional (3D) printing can be used to form the housing and the chamber including the porous lattice structure as a single integral structure. For certain embodiments, a concentric-circle fin design, a crisscross fin design, or a conical fin design is used to form the porous lattice structure for the vaporizer chamber. For further embodiments, techniques are implemented to resolve potential problems with 3D printing of the vaporizer cores. One example technique is encapsulation of the vaporizer core within a shell, such as a two-piece shell, to resolve potential problems with leaks. Disclosed embodiments for the vaporizer cores provide manufacturing, material, and design improvements to prior solutions.

A steam generator includes: a base module which has a water supply port for receiving steam water; and a steam module which is connected to an upper side of the base module, in which the steam module includes: a main body which has an upper surface and a lower surface; a flow pipe which is positioned at a central portion of the main body and into which the steam water flows; and a heater which supplies heat to the flow pipe, and in which another steam module is selectively coupled to an upper side of the steam module. According to this, the internal volume of the steam generator and the output of the heater provided in the steam generator can be selectively varied so as to provide an optimum output according to the volume of a cooking device in which the steam generator is installed.

A high-pressure instant steam generator is disclosed. The steam generator unit comprises a HP unit, a HP water-band heater, an evaporator, a super heater, and at least a spray gun attachment. The high-pressure unit comprises a main pump for supplying a liquid from a storage tank in case of independent unit. The HP water band heater connected to the HP unit via a needle valve and a first manifold. The evaporator connected to the band heater via a second manifold and a check-valve, configured to convert the liquid into steam at a saturation point. The super heater connected to the evaporator via a check-valve, configured to heat the generated steam to the saturated temperature. The high-pressure steam attachment or spray gun connected to the super heater via a fourth manifold, configured to spray the generated high-pressure steam for sanitizing the surface the surface of the object being treated.