Pursuant to 35 U.S.C. ยง 119 and the Paris Convention Treaty, this application claims foreign priority to Chinese Patent Application No. 202022389620.2 filed on Oct. 25, 2020, the contents of which, including any intervening amendments thereto, are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P. C., Attn.: Dr. Matthias Scholl Esq., 245 First Street, 18th Floor, Cambridge, MA 02142.
The disclosure relates to a high-frequency heating device.
Conventionally, when a high-frequency heating device is combined with a hookah for heating a tobacco material, the high-frequency heating device is held by hands to heat the tobacco material in the hookah. In addition, the conventional high-frequency heating device has no over-temperature protection function.
The disclosure provides a high-frequency heating device, comprising: a housing, a thermal insulation cup, and a magnetic induction coil; the housing comprises a cavity and the magnetic induction coil is disposed in the cavity; the thermal insulation cup is nested in the magnetic induction coil.
In a class of this embodiment, the high-frequency heating device further comprises a variable-frequency power source and a battery; the variable-frequency power source and the battery are disposed in the housing; the battery comprises an output end soldered on an input end of the variable-frequency power source; an output end of the variable-frequency power source is soldered on the magnetic induction coil; in a power on state, the variable-frequency power source outputs an alternating current and thus the magnetic induction coil produces an induced magnetic field.
In a class of this embodiment, the high-frequency heating device further comprises a temperature difference sensor; the temperature difference sensor is soldered on the variable-frequency power source and is in the vicinity of a top opening of the thermal insulation cup to sense a temperature of an airflow entering the thermal insulation cup, thus controlling the variable-frequency power source whether or not to enter an automatic heating mode.
In a class of this embodiment, the high-frequency heating device further comprises a thermistor; the thermistor is soldered on the variable-frequency power source and is located in the thermal insulation cup for over-temperature protection; when a working temperature of the heating device reaches 600 degrees Fahrenheit, no current is output from the variable-frequency power source, and the heating device stops working.
In a class of this embodiment, the high-frequency heating device is combined with a hookah for heating a tobacco material; the hookah comprises a heating cup and a smoke filter; the heating cup is configured to accommodate the tobacco material; the heating cup communicates with the smoke filter; when in use, the heating cup is embedded in the cavity of the housing of the high-frequency heating device; and the heating cup comprises glass with a metal conductor inlaid in the glass.
In a class of this embodiment, the heating cup comprises a top end provided with an air inlet through which air enters the heating cup.
In a class of this embodiment, in the power on state, an eddy current is produced in the metal conductor in an induction magnetic field of the magnetic induction coil whereby the metal conductor is heated up, and then the heat is transferred to the heating cup through heat transfer to heat the tobacco material in the heating cup to produce smoke; in a smoking process, the air enters the heating cup via the air inlet, and the temperature difference sensor sensors a temperature change in the heating cup and controls the variable-frequency power source to work in an automatic heating mode; the smoke produced in the heating cup is driven by the air to enter the smoke filter where the smoke is filtered by water and then flows out of the exit of the smoke filter for user's inhaling.
To further illustrate, embodiments detailing a high-frequency heating device are described below. It should be noted that the following embodiments are intended to describe and not to limit the disclosure.
Principle of high frequency heating: when an alternating current is introduced to a magnetic induction coil, an alternating magnetic field will be generated. When a metal conductor is placed in the alternating magnetic field, an eddy current is produced. The eddy current makes the metal conductor heated.
Tobacco materials refer to tobacco tar, tobacco paste, tobacco leaf and other materials used to produce smoke.
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The following advantages are associated with the high-frequency heating device of the disclosure:
It will be obvious to those skilled in the art that changes and modifications may be made, and therefore, the aim in the appended claims is to cover all such changes and modifications.
Number | Date | Country | Kind |
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202022389620.2 | Oct 2020 | CN | national |
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Number | Date | Country | |
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20220125115 A1 | Apr 2022 | US |