Heating Cooking Device

• US 20140360380A1
• Filed: 09/05/2012
• Published: 12/11/2014
• Est. Priority Date: 12/26/2011
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Iwata, Noboru, Kitazawa, Tazuko, Kotani, Teruhisa, Murakami, Yoshiteru, Kishira, Kentaro, Hamamoto, Masaki, Etoh, Hideki, Naka, Takayuki
• Application Number:
  US14/365,684
• Publication Number:
  US 20140360380A1
• Time in Patent Office: Days
• US Class Current: 99/331
• CPC Class Codes: H05B 6/6447 Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
• CPC Class Codes: H05B 6/645 using temperature sensors
• CPC Class Codes: H05B 6/6458 using humidity or vapor sensors
• CPC Class Codes: H05B 6/80 Apparatus for specific applications stoves or ranges F24C7/02

Abstract

A heating cooking device 1 includes: a heating unit 5 which heats an object to be heated C; an electromagnetic wave generation unit 15 which radiates electromagnetic waves E having a frequency of 100 GHz to 120 THz towards the object to be heated C for determining a cooking state of the object to be heated C; an electromagnetic wave detection unit 16 which detects the electromagnetic waves E radiated by the electromagnetic wave generation unit 15; and a CPU 13 which determines a cooking state of the object to be heated C based on a signal output by the electromagnetic wave detection unit 16 which detects the electromagnetic waves E. The heating cooking device 1 detects the electromagnetic waves E, an intensity of which is changed by striking the object to be heated C and determine the cooking state of the object to be heated C.

Claims

1. :

A heating cooking device comprising;

a heating unit which heats an object to be heated;

an electromagnetic wave generation unit which radiates electromagnetic waves having a frequency of 100 GHz to 120 THz towards the object to be heated for determining a cooking state of the object to be heated;

an electromagnetic wave detection unit which detects the electromagnetic waves radiated by the electromagnetic wave generation unit; and

a calculation unit which determines a cooking state of the object to be heated based on a signal output by the electromagnetic wave detection unit which detects the electromagnetic waves.

2. :

The heating cooking device according to claim 1, wherein the frequency of the electromagnetic waves is equal to or lower than 2.5 THz.

3. :

The heating cooking device according to claim 1, further comprising;

a heating chamber which accommodates the object to be heated; and

an exhaust unit for discharging gas in the heating chamber to the outside.

4. :

The heating cooking device according to claim 1, wherein the electromagnetic waves are radiated towards a plurality of different points, and a plurality of the signals corresponding to the respective electromagnetic waves are output by the electromagnetic wave detection unit.

5. :

The heating cooking device according to claim 4, wherein lengths of radiation paths of the electromagnetic waves radiated towards the plurality of different points, are substantially the same.

6. :

The heating cooking device according to claim 4, wherein the electromagnetic waves radiated towards the plurality of different points strike a contacting portion of the object to be heated and a support member which supports the object to be heated, and a non-contacting portion of the support member and the object to be heated.

7. :

The heating cooking device according to claim 4, wherein the electromagnetic waves radiated towards the plurality of different points strike a contacting portion of the object to be heated and a support member which supports the object to be heated, and a non-contacting portion of the object to be heated and the support member.

8. :

The heating cooking device according to claim 1, further comprising;

a humidity detection unit which detects a humidity around the object to be heated,

wherein the calculation unit corrects the signal output by the electromagnetic wave detection unit using the humidity detected by the humidity detection unit.

9. :

The heating cooking device according to claim 1, further comprising;

a temperature detection unit which detects a temperature of the object to be heated,

wherein the calculation unit corrects the signal output by the electromagnetic wave detection unit using the temperature detected by the temperature detection unit.

10. :

The heating cooking device according to claim 1, wherein the calculation unit determines a cooking state of the object to be heated based on an absolute value of the signal output by the electromagnetic wave detection unit.

11. :

The heating cooking device according to claim 1, wherein the calculation unit determines a cooking state of the object to be heated based on a change of the signal output by the electromagnetic wave detection unit with respect to time.

12. :

The heating cooking device according to claim 11, wherein a predetermined reference value for an amount of change of the signal output by the electromagnetic wave detection unit with respect to time is included.

13. :

The heating cooking device according to claim 1,

wherein the electromagnetic wave detection unit detects the electromagnetic waves passing through the object to be heated, and

the calculation unit determines a cooking state of the object to be heated based on a change in location of the electromagnetic waves passing through the object to be heated, which is detectable by the electromagnetic wave detection unit.

14. :

The heating cooking device according to claim 13, wherein a radiation location of the electromagnetic waves changes.

15. :

The heating cooking device according to claim 13, further comprising an indicating unit which indicates a radiation location of the electromagnetic waves.

16. :

The heating cooking device according to claim 9,

wherein a predetermined reference value for the output of the temperature detection unit is included, and

the electromagnetic waves for determining the cooking state of the object to be heated are radiated towards the object to be heated, under conditions that the output of the temperature detection unit is equal to or larger than the reference value after starting cooking of the object to be heated.

17. :

The heating cooking device according to claim 1, further comprising a control unit which controls an operation of the heating unit.

18. :

The heating cooking device according to claim 1, further comprising a display unit which displays the cooking state of the object to be heated.