A sous vide device (100) including an outer housing (104) within which there is located a heated tube (448) surrounding inner tubular wall (311), with the inner tubular wall (311) providing a first duct (461), and a second duct (462) being provided between the inner tubular wall and outer tubular wall with the first duct (461) and second duct (462) co-operating to provide a fluid flow path extending from an inlet (107) to an outlet (106), with vanes (450) being attached to the inner tubular wall (311) so as to be rotatably driven thereby to cause the liquid to pass along the fluid flow path.

An electric kettle may include a body formed in a cylindrical shape having an open upper surface and an open lower surface, the body defining a space in which fluid, such as water may be contained, an upper body mounted on an upper end of the body and communicating with the open upper surface of the body, a lid seated on the upper body to open and close the open upper surface of the body, a heating module inserted and mounted through the open lower surface of the body to partition an inside of the body vertically and heat fluid inside of the body, and a base on which the lower surface of the body is seated and which transfers power applied from outside to the heating module when the body is seated. The body may include an outer body forming an outer surface and an inner body forming an inner surface. The heating module may be mounted on the inner surface of the inner body.

An electric kettle may include a body formed by an outer body and an inner body having a cylindrical shape and an open upper surface and an open lower surface, a heat insulation space being formed between the outer body and the inner body, a lid configured to open or close the open upper surface of the body, a heating module configured to partition an inside of the inner body vertically and heat fluid, such as water inside of the inner body, a mounting portion which is formed on an inner surface of the inner body and on which the heating module is mounted, and a base on which a lower surface of the body is seated and which transfers power applied from outside to the heating module when the body is seated. The heating module may include a heating plate inserted through the open lower surface of the inner body and coupled to the mounting portion to form a bottom surface of the inner body, and a heater provided on a lower surface of the heating plate to generate heat.

An electric kettle may include a body configured to form a space in which liquid, such as water may be contained, a handle that protrudes from an outer surface of the body, a heating module provided inside of the body to heat liquid inside of the body, an operation portion provided in the handle to operate so as to control an operation of the heating module, and a main printed circuit board (PCB) provided inside of the handle to control the operation of the heating module according to an operation of the operation portion. The body may have a double wall structure including two walls spaced apart from each other, and an electric wire that connects the main PCB and the heating module may be guided from the handle to the heating module through a space between the two walls.

An electric kettle may include a body made of a metal material and configured to form a space in which fluid, such as water is contained, a heating module provided in the body to heat the space, a handle mounted to protrude from an outer surface of the body, a handle cover made of a metal material and configured to form a protruding upper surface of the handle, and a handle printed circuit board (PCB) provided inside of the handle and including a touch sensor in close contact with a rear surface of the handle cover to sense a touch operation of the handle cover. An operation of the heating module may be controlled by the handle PCB.

An ultrafine bubble generating apparatus and an ultrafine bubble generating method capable of efficiently generating an ultrafine bubble-containing liquid with high purity are provided. In order to this, a heating element provided in a liquid is caused to generate heat, and film boiling is made on an interface between the liquid and the heating element. A film boiling bubble is generated by the film boiling, and ultrafine bubbles are thus generated near the film boiling bubble.

A liquid heating appliance for making a beverage, the liquid heating appliance comprising: a plurality of heating components for heating a liquid, where at least a first of the plurality of heating components is powered using mains power, a power management system, wherein the power management system comprises: a controller, and an energy storage device, wherein the controller is arranged to control an amount of the mains power applied to the first of the plurality of heating components, and further arranged to control an amount of stored power from the energy storage device to be applied to at least a second of the plurality of heating components.

A method and a device for detecting a boiling state of a liquid and a domestic cooking appliance permit a boiling state of a liquid to be detected during a process of heating the liquid in a heating zone, for example of an induction cooktop. A sensor senses vibrations that are caused during the heating of the liquid in the form of a measuring signal. An evaluation unit converts a time diagram of the sensed measuring signal into a frequency spectrum and then determines the boiling state of the liquid by using an intelligent algorithm on the basis of the frequency spectrum.

The present invention relates to a method and device for measuring the temperature in power resistors based on the measurement of the high-frequency circuit parameters of said resistor. The present invention excludes the use of thermocouples, dedicated temperature sensors or thermo chambers.

A bottle sleeve warmer apparatus for conveniently heating a dental procedure water bottle includes a sleeve body having a front side separated from a rear side to form an inside. An attachment mechanism is coupled to the sleeve body and is configured to secure the sleeve body around a bottle. A control housing is coupled to the front side of the sleeve body. A temperature sensor is coupled to the rear side of the sleeve body and is configured to read the temperature of the bottle. A temperature display is coupled to the control housing to display a reading from the temperature sensor. A plurality of controls is coupled to the control housing and activates a heating element coupled within the inside of the sleeve body to maintain the temperature of the bottle at a preset level.