Induction cooking hob

Patent metadata

Field	Value
Publication number	US-10098189-B2
Application number	US-201615153901-A
Country	US
Kind code	B2
Filing date	May 13, 2016
Priority date	May 14, 2015
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

An induction cooking heater including an inductor having a number of magnetic field concentration bars located beneath the inductor. The inductor having the magnetic field concentration bars is supported by a polymeric frame. The polymeric frame includes a first support element on which the inductor is wound and a second support element that supports the magnetic field concentration bars. The first support element and the second support element are assembled together through a central ring-shaped zone having a snap engagement. The inductor is wound on an upper surface of the first support element opposite to the second support element.

First claim

What is claimed is:

1. An induction cooking heater comprising an inductor having a number of magnetic field concentration bars located beneath the inductor wherein the inductor having the number of magnetic field concentration bars is supported by a polymeric frame, wherein the polymeric frame comprises a first support element on which the inductor is wound and a second support element that supports the number of magnetic field concentration bars, wherein the first support element and the second support element are assembled together through a central ring-shaped zone having a snap engagement, wherein the inductor is wound on an upper surface of the first support element opposite to the second support element.

2. The induction cooking heater according to claim 1 , wherein a dimension of the second support element is lower than the dimension of the first support element.

3. The induction cooking heater according to claim 2 , wherein the second support element presents a plurality of seats for the number of magnetic field concentration bars, each seat having a radial end far from the central zone open so that the seat may contain the number of magnetic field concentration bars which are longer than the plurality of seats.

4. The induction cooking heater according to claim 1 , wherein an intermediate zone of the second support element comprises a seat for a group of curved field concentration bars.

5. The induction cooking heater according to claim 4 , wherein the group of curved field concentration bars comprise a plurality of flat ferrite elements having a circular sector shape.

6. The induction cooking heater according to claim 1 , wherein the first element comprises a plurality of arms stemming out from a central zone that are joined at an intermediate ring.

7. The induction cooking heater according to claim 6 , wherein the intermediate ring divides the first support element into two zones, a central zone with a number of first radial arms and a second zone with a number of cantilevered second radial arms.

8. The induction cooking heater according to claim 7 , wherein the number of first arms are identical to the number of second arms and the first arms and the second arms are angularly shifted relative to each other.

9. The induction cooking heater according to claim 7 , wherein the number of first arms is lower than the number of the second arms.

10. The induction cooking heater according to claim 1 , wherein the first support element comprises a first polymeric material and the second support element comprises a different second polymeric material.

11. An induction cooking heater comprising an inductor having a number of magnetic field concentration bars located beneath the inductor wherein the inductor having the number of magnetic field concentration bars is supported by a polymeric frame, wherein the polymeric frame comprises a first support element on which the inductor is wound and a second support element that supports the number of magnetic field concentration bars, wherein the first support element and the second support element are assembled together through an annular zone having a snap engagement, wherein the inductor is wound on an upper surface of the first support element opposite to the second support element, wherein the first element presents a plurality of arms stemming out from a central zone that are joined at an intermediate ring.

12. The induction cooking heater according to claim 11 , wherein the second support element presents a plurality of seats for the number of magnetic field concentration bars, each seat having a radial end far from the central zone open so that the seat may contain the number of magnetic field concentration bars which are longer than the plurality of seats.

13. The induction cooking heater according to claim 11 , wherein an intermediate zone of the second support element comprises a seat for a group of curved field concentration bars.

14. The induction cooking heater according to claim 13 , wherein the group of curved field concentration bars comprise a plurality of flat ferrite elements having a circular sector shape.

15. The induction cooking heater according to claim 14 , wherein the intermediate ring divides the first support element into two zones, a central zone with a number of first radial arms and a second zone with a number of cantilevered second radial arms.

16. The induction cooking heater according to claim 15 , wherein the number of first arms are identical to the number of second arms and the first arms and the second arms are angularly shifted relative to each other.

17. The induction cooking heater according to claim 11 , wherein a dimension of the second support element is lower than the dimension of the first support element.

Assignees

• Whirlpool Co

Inventors

• Chinazzo Fabiano

Classifications

• H05B2206/022

  Special supports for the induction coils · CPC title

• H05B6/44 Primary

  having more than one coil or coil segment · CPC title

• H05B1/0266

  Cooktops · CPC title

• H05B6/1245

  with special coil arrangements · CPC title

• H05B6/365

  using supplementary conductive or ferromagnetic pieces · CPC title