Wireless sensor in a microwave oven

• US 10,856,371 B2
• Filed: 06/26/2018
• Issued: 12/01/2020
• Est. Priority Date: 06/26/2018
• Status: Active Grant

• Current Assignee: Midea Group Co., Ltd
• Original Assignee: Midea Group Co., Ltd
• Inventors: Staun, Paul R., Snook, Bryan T.
• Primary Examiner(s): Ross, Dana
• Assistant Examiner(s): Samuels, Lawrence H
• Application Number:
  US16/019,106
• Publication Number:
  US 20190394840A1
• Time in Patent Office: 889 Days
• CPC Class Codes: G01K 1/02 Means for indicating or recording specially adapted for thermometers
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: G01K 2207/06 for preparation purposes
• CPC Class Codes: H05B 6/6452 the sensors being in contact with the heated product
• CPC Class Codes: H05B 6/6467 using detectors with R.F. transmitters
• CPC Class Codes: H05B 6/686 Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators
• CPC Class Codes: H05B 6/687 for cooking

Abstract

A microwave oven is described herein. In some instances, such a microwave oven may include a housing; a rotating turntable assembly disposed in a cooking cavity of the housing; a probe powered by the turntable assembly, where the probe is configured to measure an environmental condition during a cooking cycle and where the probe is configured to transmit a signal regarding the environmental condition; and a controller disposed in the housing and configured to receive the signal regarding the environmental condition from the probe. A method of operating a microwave oven for sous vide cooking is also disclosed.

Claims

1. A microwave oven, comprising:

a housing;

a rotating turntable assembly disposed in a cooking cavity of the housing;

a probe powered by the turntable assembly,

wherein the probe is configured to measure an environmental condition during a cooking cycle, wherein the environmental condition is a temperature or a moisture level,

wherein the probe is configured to transmit a signal regarding the environmental condition; and

a controller disposed in the housing and configured to;

receive the signal regarding the environmental condition from the probe.

2. The microwave oven of claim 1, wherein the turntable assembly includes a generator that is powered by rotation of the turntable assembly.

3. The microwave oven of claim 2, wherein the generator further includes a wheel that contacts a surface in the cooking cavity and that drives the generator as the rotating turntable rotates.

4. The microwave oven of claim 1, wherein the turntable assembly includes an axle that powers the probe.

5. The microwave oven of claim 4, wherein the axle includes first and second electrical contacts that communicate an electrical power signal to the probe.

6. The microwave oven of claim 1, further comprising a wireless transmitter in communication with the probe and an antenna coupled to the wireless transmitter to transmit the signal regarding the environmental condition to the controller, and wherein the controller is coupled to a wireless receiver configured to receive the signal regarding the environmental condition from the wireless transmitter.

7. The microwave oven of claim 1, wherein the environmental condition is a temperature.

8. The microwave oven of claim 7, wherein the probe is insertable into a food item and the temperature measured is an internal temperature.

9. The microwave oven of claim 7, wherein the controller is further configured to display the temperature measured by the probe.

10. The microwave oven of claim 1, wherein the probe is configured to rotate with a rotatable portion of the turntable assembly.

11. The microwave oven of claim 1, wherein the environmental condition is a moisture level.

12. The microwave oven of claim 1, wherein the controller is further configured to modify one or more microwave oven settings in response to the signal regarding the environmental condition.

13. A method of operating a microwave oven including a housing, a rotating turntable assembly disposed in a cooking cavity, a probe, and a controller, the method comprising:

rotating the rotating turntable assembly;

powering the probe with the rotating turntable assembly during rotation of the rotating turntable assembly;

sensing, by the probe, an environmental condition, wherein the environmental condition is a temperature or a moisture level;

transmitting, by the probe, a signal regarding the sensed environmental condition; and

receiving, by the controller, the signal regarding the environmental condition.

14. The method of claim 13 further including modifying, by the controller, one or more microwave oven settings in response to the environmental condition sensed.

15. The method of claim 13, wherein the environmental condition is a temperature and the method further comprises displaying the temperature sensed by the probe.

16. The method of claim 13, wherein the modifying one or more microwave oven settings includes adjusting an output of a cooking element of the microwave oven.

17. The method of claim 13, wherein the modifying one or more microwave oven settings includes adjusting a preset cooking time.

18. The method of claim 13, wherein powering the probe with the rotating turntable assembly includes powering a generator by the rotating the turntable assembly.

19. The method of claim 13, wherein powering the probe with the rotating turntable assembly includes powering the probe from an axle of the rotating turntable assembly.

20. The method of claim 13, wherein the probe is wireless and transmitting the signal regarding the environmental condition further includes transmitting the signal with a wireless transmitter and antenna.

21. The method of claim 13, wherein the environmental condition is a moisture level.

22. A method of operating a microwave oven for sous vide cooking, the microwave oven including a housing, a cooking cavity disposed within the housing, a rotating turntable assembly disposed in the cooking cavity, a probe, and a controller, the method comprising:

submerging at least a portion of the probe in a water bath contained within the cooking cavity;

rotating the rotating turntable assembly;

powering the probe with the rotating turntable assembly during rotation of the rotating turntable assembly;

sensing, by the probe, a temperature of the water bath;

transmitting, by the probe, a signal regarding the temperature of the water bath;

receiving, by the controller, the signal regarding the temperature of the water bath; and

regulating, by the controller, an output of a cooking element of the microwave oven so as to hold the water bath at a preset temperature.