Smart kettle using induction heating

Patent metadata

Field	Value
Publication number	US-11957265-B2
Application number	US-201716609117-A
Country	US
Kind code	B2
Filing date	Aug 23, 2017
Priority date	Apr 26, 2017
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A smart kettle is disclosed. The smart kettle includes a body that is configured to increase in temperature in response to a magnetic field. The smart kettle further includes a temperature sensor that is located on a bottom of the body and that is configured to measure a temperature of the bottom of the body. The smart kettle further includes a controller that is configured to adjust a strength of the magnetic field based on the temperature measured by the temperature sensor by outputting a control signal.

First claim

The invention claimed is:

1. A smart kettle, comprising:
a body that is configured to increase in temperature in response to a magnetic field;
a temperature sensor that is located on a bottom of the body and that is configured to measure a temperature of the bottom of the body; and
a controller that is configured to output a control signal to adjust a strength of the magnetic field based on the temperature measured by the temperature sensor,
wherein the controller is configured to output the control signal to adjust the strength of the magnetic field by:
compensating the measured temperature by using pre-stored data to correct a temperature measurement error resulting from a vacuum space between an inner surface of the bottom of the body and an outer surface of the bottom of the body, and
adjusting the strength of the magnetic field based on the compensated temperature.

2. The smart kettle of claim 1 , comprising:
a power receiving coil that is located on the bottom of the body and that is configured to generate alternating current (AC) power in response to the magnetic field;
a rectifier that is configured to convert the AC power received from the power receiving coil into direct current (DC) power; and
a power supply configured to provide the DC power received from the rectifier to the controller.

3. The smart kettle of claim 2 , comprising:
a support that includes the power receiving coil and the temperature sensor and that is coupled to the bottom of the body,
wherein the power receiving coil is located on a bottom of the support.

4. The smart kettle of claim 3 , wherein the temperature sensor is located in a center of the support and is configured to measure the temperature of the bottom of the body by contacting the outer surface outside of the bottom of the body.

5. The smart kettle of claim 2 , comprising:
a communicator configured to transmit the control signal to a smart table that is configured to generate the magnetic field.

6. The smart kettle of claim 5 , comprising:
an interface configured to, based on an input being received from a user, determine a target temperature; and
a display configured to display the target temperature on a screen using a color or a number,
wherein the controller is configured to adjust the temperature measured by the temperature sensor to the target temperature by adjusting, based on the control signal, the magnetic field generated by the smart table.

7. The smart kettle of claim 1 , comprising:
a magnetic body that is integrated with the inner surface and that is configured to increase in temperature in response to the magnetic field; and
a non-magnetic body that is located on a portion of a bottom of the outer surface of the body and that is configured not to react to the magnetic field.

8. A smart kettle used over a smart table configured to generate a magnetic field, the smart kettle comprising:
a body that is configured to increase in temperature in response to the magnetic field generated by the smart table; and
a controller that is configured to output a control signal to adjust a strength of the magnetic field based on the temperature of the body,
wherein the controller is configured to output the control signal to adjust the strength of the magnetic field by:
compensating a temperature measured in the body by using pre-stored data to correct a temperature measurement error resulting from a vacuum space between an inner surface of a bottom of the body and an outer surface of a bottom of the body, and
adjusting the strength of the magnetic field based on the temperature measured in the body.

9. The smart kettle of claim 8 , wherein the body includes:
a first portion that defines the bottom of the body, and
a second portion that defines a side wall of the body that is connected with the bottom of the body and that that defines the vacuum space inside the second portion.

10. The smart kettle of claim 9 , wherein the first portion includes:
a magnetic body that is located in a center of the first portion and that is configured to increase in temperature in response to the magnetic field; and
a non-magnetic body that contacts the magnetic body at an outer surface of the first portion and that is configured not to react to the magnetic field.

11. The smart kettle of claim 9 , wherein the first portion includes a magnetic body that defines an inner surface and an outer surface of the bottom of the body and that is configured to increase in temperature in response to the magnetic field.

12. The smart kettle of claim 9 , wherein the first portion includes a non-magnetic body that defines an inner surface of the bottom of the body and that is configured not to react to the magnetic field and a magnetic body that defines an outer surface of the bottom of the body and that is configured to increase in temperature in response to the magnetic field.

13. The smart kettle of claim 9 , wherein the first portion includes a non-magnetic body that defines an inner surface and an outer surface of the bottom of the body and that is configured not to react to the magnetic field and a magnetic body that is located inside the non-magnetic body and that is configured to increase in temperature in response to the magnetic field.

14. The smart kettle of claim 9 , wherein the first portion and the second portion (i) include a magnetic body that is configured to increase in temperature in response to the magnetic field and (ii) are integrally formed with each other.

15. The smart kettle of claim 9 , wherein the first portion does not define the vacuum space.

16. The smart kettle of claim 8 , comprising:
a temperature sensor that is located on a bottom of the body and that is configured to measure a temperature of the bottom of the body;
a power receiving coil that is located on the bottom of the body and that is configured to generate electricity in response to the magnetic field;
a power supply configured to provide electricity received from the power receiving coil to the controller; and
a communicator configured to wirelessly transmit the control signal to the smart table.

17. The smart kettle of claim 16 , wherein:
the temperature sensor is located in a center of an outside of the bottom of the body and is configured to measure the temperature of the body, and
the controller is configured to adjust, by generating the control signal, the strength of the magnetic field generated by the smart table based on the temperature measured by the temperature sensor.

18. The smart kettle of claim 16 , comprising:
an interface configured to determine a target temperature based on receiving an input from a user; and
a display configured to display the target temperature on a screen using a color or a number,
wherein the controller is configured to adjust the temperature measured by the temperature sensor to the target temperature by adjusting, using the control signal, the magnetic field generated by the smart table.

Assignees

• Lg Electronics Inc

Inventors

• Moon Hyunwook
• Kim Yangkyeong
• Kim Wan Soo

Classifications

• A47J27/2105 Primary

  of the cordless type, i.e. whereby the water vessel can be plugged into an electrically-powered base element · CPC title

• A47B33/00

  Kitchen or dish-washing tables · CPC title

• A47J36/32

  Time-controlled igniting mechanisms or alarm devices · CPC title

• H02J50/12

  of the resonant type · CPC title

• H05B6/06

  Control, e.g. of temperature, of power · CPC title