Temperature detection assembly and a corresponding lid for a cooking pot

1. A temperature detection assembly ( 10 ) for a cooking pot ( 24 ), wherein said temperature detection assembly ( 10 ) comprises: a straight and elongated bar ( 12 ), at least one SAW (surface acoustic wave) temperature sensor ( 14 ) arranged inside a lower end portion of the bar ( 12 ), a sensor antenna ( 16 ) connected to an upper end of the bar ( 12 ), and at least one handle ( 18 ) connected to the upper end of the bar ( 12 ), wherein the SAW temperature sensor ( 14 ) or a heat conducting element connected to said SAW temperature sensor ( 14 ) is spaced from a lower end of the bar ( 12 ) by a predetermined distance, wherein a non-heat-conducting material extends from the SAW temperature sensor ( 14 ) or the heat conducting element, respectively, and to the lower end of the bar ( 12 ), wherein the non-heat-conducting material is arranged at a lower tip of the bar ( 12 ), wherein the distance between the SAW temperature sensor ( 14 ) or the heat conducting element connected to said SAW temperature sensor ( 14 ), respectively, and the lower end of the bar ( 12 ) is between 5 mm and 20 mm.

2. The temperature detection assembly ( 10 ) according to claim 1 , wherein the sensor antenna ( 16 ) and the handle ( 18 ) are connected to the upper end of the bar ( 12 ) via a bowed section ( 26 ).

3. The temperature detection assembly ( 10 ) according claim 2 , wherein a flexible printed circuit board and/or a coax cable is arranged inside the bowed section ( 26 ).

4. The temperature detection assembly ( 10 ) according to claim 2 , wherein an outer portion of the bowed section ( 26 ) is made of silicone.

5. The temperature detection assembly ( 10 ) according to claim 1 , wherein the sensor antenna ( 16 ), the handle ( 18 ) and/or the bowed section ( 26 ) are covered by a food safe and heat resistant material, in particular by a silicone material.

6. The temperature detection assembly ( 10 ) according to claim 1 , wherein the bar ( 12 ) is made of stainless steel.

7. The temperature detection assembly ( 10 ) according to claim 1 , wherein the distance between the SAW temperature sensor ( 14 ) or the heat conducting element connected to said SAW temperature sensor ( 14 ), respectively, and the lower end of the bar ( 12 ) is 10 mm.

8. The temperature detection assembly ( 10 ) according to claim 1 , wherein the bar ( 12 ) is a single-piece part and has a length between 10 cm and 20 cm, in particular 16 cm.

9. The temperature detection assembly ( 10 ) according to claim 1 , wherein the bar ( 12 ) is a telescopic bar with a variable length.

10. The temperature detection assembly ( 10 ) according to claim 9 , wherein the length of the telescopic bar ( 12 ) is variable between 8 cm and 16 cm.

11. The temperature detection assembly ( 10 ) according claim 1 , wherein at least one distance element is arranged besides and/or enclosing the sensor antenna ( 16 ), so that there is a minimum distance between the antenna ( 16 ) and the metal of the cooking pot ( 24 ) and/or the sensor antenna ( 16 ) has a defined direction to the wall of the cooking pot ( 24 ).

12. A temperature detection system for a cooking pot ( 24 ), wherein said temperature detection system includes a temperature detection assembly ( 10 ) and a lid ( 20 ) for the cooking pot ( 24 ), wherein the lid ( 20 ) is provided for receiving the temperature detection assembly ( 10 ),

wherein the temperature detection system includes the temperature detection assembly ( 10 ) according to claim 1 and the lid ( 20 ) comprises an elongated guide tube ( 22 ) for receiving the bar ( 12 ) of the temperature detection assembly ( 10 ), wherein an inner diameter of the guide tube ( 22 ) is marginally bigger than an outer diameter of the bar ( 12 ).

13. A temperature detection system according to claim 12 , wherein the temperature detection system is provided for at least one ISM (industrial, scientific and medical) band.

14. A temperature detection system according to claim 12 , wherein the temperature detection system is adaptable to at least one certain ISM band.

15. A cooking hob including a control unit, wherein the cooking hob is provided for a wireless connection to the temperature detection assembly ( 10 ) according to claim 1 and/or to a temperature detection system including a temperature detection assembly with a straight and elongated bar ( 12 ) which comprises at least one SAW temperature sensor ( 14 ), and a lid ( 20 ) for the cooking pot ( 24 ), wherein the lid ( 20 ) is provided for receiving the temperature detection assembly ( 10 ), and

the lid ( 20 ) comprises an elongated guide tube ( 22 ) for receiving the elongated bar ( 12 ) of the temperature detection assembly ( 10 ), wherein an inner diameter of the guide tube ( 22 ) is marginally bigger than an outer diameter of the bar ( 12 ), wherein the elongated guide tube ( 22 ) extends downwardly from a top surface of the lid ( 20 ) and is configured to guide the insertion of the bar ( 12 ) into the cooking pot ( 24 ).

16. A cooking hob according to claim 15 , wherein the cooking hob comprises a reader antenna provided for the wireless connection to the sensor antenna ( 16 ) of the temperature detection assembly ( 10 ), and a reader electrically connected to the control unit of the cooking hob.

17. A lid ( 20 ) for a cooking pot ( 24 ), wherein the lid ( 20 ) is provided for receiving a temperature detection assembly ( 10 ) with a straight and elongated bar ( 12 ) which comprises at least one SAW temperature sensor ( 14 ), wherein the lid ( 20 ) comprises an elongated guide tube ( 22 ) for receiving the bar ( 12 ) of the temperature detection assembly ( 10 ), wherein an inner diameter of the elongated guide tube ( 22 ) is marginally bigger than an outer diameter of the bar ( 12 ), wherein the elongated guide tube ( 22 ) extends downwardly from a top surface of the lid ( 20 ) and is configured to guide the insertion of the bar ( 12 ) into the cooking pot ( 24 ), wherein a non-heat-conducting material is arranged at a lower tip of the bar ( 12 ).

18. The lid ( 20 ) according to claim 17 , wherein the longitudinal axis of the guide tube ( 22 ) extends perpendicular to the plane of the lid ( 20 ).

19. The lid ( 20 ) according to claim 17 , wherein a shorter portion of the guide tube ( 22 ) extends above the lid ( 20 ), while a longer portion of the guide tube ( 22 ) extends below the lid ( 20 ).

20. The lid ( 20 ) according to claim 17 , wherein the lid ( 20 ) comprises a border ( 28 ), wherein the border ( 28 ) encloses a circular disk of the lid ( 20 ) and extends downwards.