Wireless Kitchen Appliance Operated on an Induction Heating Cooker

• US 20150013549A1
• Filed: 12/21/2012
• Published: 01/15/2015
• Est. Priority Date: 12/29/2011
• Status: Abandoned Application

• Current Assignee: Arcelik Anonim Sirketi
• Original Assignee: Arcelik Anonim Sirketi
• Inventors: Yaman, Onur, Yorukoglu, Ahmet, Hazir, Sefa
• Application Number:
  US14/370,022
• Publication Number:
  US 20150013549A1
• Time in Patent Office: Days
• US Class Current: 99/358
• CPC Class Codes: H05B 6/12 Cooking devices
• CPC Class Codes: H05B 6/1236 adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The present invention relates to a kitchen appliance (1) operated wirelessly on an induction heating cooker (K), comprising a programmable microcontroller (2), one or more than one electronic circuit (3) that provides the microcontroller (2) to control the communication means, user interface and sensors, providing communication with the induction heating cooker (K) whereon the kitchen appliance (1) is operated, a power control circuitry (4) that supplies the microcontroller (2) and the electronic circuits (3) with low level DC voltage, a receiver coil (5) that partially collects and provides transfer of the power generated by the induction coil (B) in the induction heating cooker (K) to the power control circuitry (4), a rectifier (6) that converts the AC voltage delivered from the receiver coil (5) to DC voltage and a buffer capacitor (7) which filters the DC voltage at the rectifier (6) outlet.

Claims

1. A kitchen appliance (1), suitable for being operated on an induction heating cooker (K) with the power generated by the induction coil (B), comprising a microcontroller (2), one or more than one electronic circuit (3) that provides the communication and/or control means (E) to be controlled by the microcontroller (2), a power control circuitry (4) that supplies the microcontroller (2) and the electronic circuits (3) with low level DC voltage, a receiver coil (5) that partially collects and provides transfer of the power generated by the induction coil (B) to the power control circuitry (4), a rectifier (6) that converts the AC voltage delivered from the receiver coil (5) to DC voltage and a buffer capacitor (7) which filters the DC voltage at the rectifier (6) outlet, characterized by a resonant circuit (8) that is disposed between the receiver coil (5) and the rectifier (6), that has one or more than one resonant capacitor (C1, C2) and that provides the power control circuitry (4) to supply the microcontroller (2) and the electronic circuits (3) with constant voltage by regulating the voltage at the outlet of the receiver coil (5).

2. A kitchen appliance (1) as in claim 1, characterized by the serial resonant circuit (8) that is formed by the resonant capacitors (C1, C2) connected to each other in parallel and connected in series to the receiver coil (5).

3. A kitchen appliance (1) as in claim 1, characterized by the parallel resonant circuit (8) that is formed by the resonant capacitors (C1, C2) connected in parallel to the receiver coil (5).

4. A kitchen appliance (1) as in claim 3, characterized by the resonant circuit (8) having one or more than one switching means (10) connected in series to each of the resonant capacitors (C1, C2) and controlled by the microcontroller (2).

5. A kitchen appliance (1) as in claim 4, characterized by a peak voltage tracker (9) disposed between the rectifier (6) and the buffer capacitor (7), that tracks the peak values of the voltage at the outlet of the rectifier (6) and feeds back to the microcontroller (2).

6. A kitchen appliance (1) as in claim 5, characterized by the microcontroller (2) that activates or deactivates the resonant capacitors (C1, C2) by means of the switching means (10) depending on the feedback received from the peak voltage tracker (9).

7. A kitchen appliance (1) as in claim 1, characterized by the microcontroller (2), that detects whether or not the voltage is high or low by measuring the frequency of the power transferred from the receiver coil (5) and activates or deactivates the resonant capacitors (C1, C2) depending on the measured frequency values.

8. A kitchen appliance (1) as in claim 1, characterized by the microcontroller (2) that deactivates the components like LED, display, backlight which draw high power in situations wherein the induction heating cooker (K) is operated at low power settings.

9. A kitchen appliance (1) as in claim 1, characterized by being a ferromagnetic cooking container that is heated with the induction energy generated by the induction coil (B).

10. A kitchen appliance (1) as in claim 1, characterized by being an active heating appliance having a resistant heater.

11. A kitchen appliance (1) as in claim 1, characterized by being an electromechanical appliance operated by an electric motor.

12. A kitchen appliance (1) as in claim 1, characterized by being a coffee machine wherein cooking control is provided by an infrared sensor.

13. A kitchen appliance (1) as in claim 1, characterized by one or more than one high power receiver coil (11) that transfers power from the induction coil (B) for operating members (M) like the heater or motor.

14. A kitchen appliance (1) as in claim 1, characterized by the resonant circuit (8) having one or more than one switching means (10) connected in series to each of the resonant capacitors (C1, C2) and controlled by the microcontroller (2).

15. A kitchen appliance (1) as in claim 1, characterized by a peak voltage tracker (9) disposed between the rectifier (6) and the buffer capacitor (7), that tracks the peak values of the voltage at the outlet of the rectifier (6) and feeds back to the microcontroller (2).

16. A kitchen appliance (1) as in claim 15, characterized by the microcontroller (2) that activates or deactivates the resonant capacitors (C1, C2) by means of the switching means (10) depending on the feedback received from the peak voltage tracker (9).