Provided is an induction heating device with which discharging can be easily avoided even when a large electric current is used. The induction heating device comprises a high-frequency power supply provided with a connection portion for an alternating-current power supply, and a heating coil portion connected to the high-frequency power supply. In the heating coil portion, a plurality of coils include n coils surrounding a cavity portion in a plane, wherein the plurality of coils are mutually connected in series via one of a plurality of capacitors.

An induction cooking appliance apparatus includes an induction coil, and a coil carrier configured to hold the induction coil and including a heat dissipation unit for dissipating heat emitted by the induction coil.

A method of improving natural gas recovery from a subterranean hydrocarbon reservoir includes at least one renewable energy source that is electrically coupled with a heat conducting element. The heat conducting element is positioned in a perforated section of a wellbore that traverses into the subterranean hydrocarbon reservoir. A temperature of the subterranean hydrocarbon reservoir is maintained above a cricondentherm temperature so that liquid condensation may be prevented at a final production time. In order to maintain the temperature within a required temperature range, an internal temperature, an internal pressure, and a set of reservoir properties are monitored and then utilized to plot a phase diagram that can be used to detect liquid condensation. If liquid condensation is detected, an electrical output of the renewable energy source is adjusted in order to control the temperature of the subterranean hydrocarbon reservoir at a producing end of a production tubing.

An electric range is provided that may effectively increase output of a heater by optimizing a shape of each ferrite core without increasing a number of ferrite cores and may secure a maximum area of a through hole that facilitates communication between an inside and outside of a core frame, thereby preventing overheating of the heater and decreasing a use time of the heater.

An electric range that may include a case, a cover plate coupled to an upper end of the case and having an upper surface on which a heating target is disposed, at least one heater disposed under the cover plate and configured to heat the heating target, an upper bracket that is disposed under the at least one heater and supports the at least one heater, a base bracket that is disposed under the upper bracket and on which a printed circuit board is installed, a heat sink installed on the printed circuit board, a blower fan installed on the base bracket and configured to discharge air toward the heat sink, and an air guide that communicates with the blower fan and surrounds the heat sink to form a flow path of air which cools the heat sink.

The coil substrate may include a substrate; a first conductor layer including a plurality of first and second segments periodically disposed on a top and a bottom of the substrate; a second conductor layer including a plurality of first and second segments periodically overlapping the first conductor layer on the top and the bottom of the substrate; a first connection line that connects the first and second segments of the first conductor layer; and a second connection line that connects the first and second segments of the second conductor layer. The first connection line includes a first region exposed on at least one of first and second surfaces that are opposite to each other of the substrate and second and third regions disposed through the substrate from both sides of the first region.

A device for heating adapters for mounting tools for use in machine tools. The device comprises a base part in which an adapter for inserting or removing a tool is arranged such that the insertion direction of the tool extends towards the base part. The device also comprises a heating part designed for heating the adapter arranged in the base part, the base part and the heating part being displaceable relative to one another in the insertion direction of the tool. The base part comprises a mounting device for retaining the adapter in a fixed manner on the base part during heating. The adapter and the mounting device are provided with elements for interlocking interaction for retaining the adapter on the base part.

An electric range is provided that may include a case, a cover plate coupled to an upper end of the case and having an upper surface on which a heating target is disposed, and an air guide forming a flow path of air, wherein the air guide includes a element installation portion which is disposed in a portion of the air guide.

An electric range is provided that may include a case that defines an external appearance of the electric range; at least one heater that heats an object; at least one upper bracket that is disposed under the at least one heater to support the at least one heater; and a support disposed under the at least one upper bracket. The support may include a mount on which a printed circuit board is mounted, and a boss portion that supports the at least one upper bracket.

An electric range is provided that may include a dedicated coil temperature sensor configured to measure a temperature of a working coil so as to monitor the temperature of the working coil in real time and actively respond to a working coil load condition, thereby remarkably increasing an operation time of the electric range.