WO2014060928A2 - Induction cooking top - Google Patents
Induction cooking top Download PDFInfo
- Publication number
- WO2014060928A2 WO2014060928A2 PCT/IB2013/059340 IB2013059340W WO2014060928A2 WO 2014060928 A2 WO2014060928 A2 WO 2014060928A2 IB 2013059340 W IB2013059340 W IB 2013059340W WO 2014060928 A2 WO2014060928 A2 WO 2014060928A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooking top
- cooking
- pan
- top according
- modification
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
- H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/05—Heating plates with pan detection means
Definitions
- the present invention relates to an induction cooking top according to the preamble of claim 1.
- Induction cooking tops are devices which exploit the phenomenon of induction heating for food cooking purposes.
- Induction cooking tops comprise a top made of glass- ceramic material upon which cooking units are positioned (hereinafter "pans") .
- inductors comprising coils of copper wire where an oscillating current (e.g. an alternating current) is circulated producing an oscillating electromagnetic field.
- the electromagnetic field has the main effect of inducing a parasitic current inside the pan, which is made of an electrically conductive ferromagnetic material.
- the parasitic current circulating in the pan produces heat by dissipation; such heat is generated only within the pan and it acts without heating the cooking top.
- This type of flameless cooking top has a better efficiency than electric cooking tops (i.e. a greater fraction of the absorbed electric power is converted into heat that heats the pan) .
- induction cooking tops are safer to use due to the absence of hot surfaces or flames, reducing the risk of burns for the user or of fire.
- the presence of the pan on the cooking top causes the magnetic flux to close on the pan itself causing the power to be transferred towards the pan. The greater the size of the pan, the higher the power that can be transferred.
- the cooking top control system monitors the currents flowing through the coils; in this way, the power supplied to each inductor can be adjusted automatically. Moreover such current monitoring allows to automatically detect the presence of a pan over the inductors and to automatically turn them off in the absence of the pan on the cooking top .
- the object of the present invention is to provide an induction cooking top capable of solving the drawbacks of the prior art.
- a further object of the present invention is to provide an induction cooking top which is simpler and cheaper to manufacture .
- a further object of the present invention is to provide a cooking top which is easier to control and to adjust.
- the general idea at the base of the present invention is to provide the cooking top with a system adapted to modify the pan presence control, upon a command by the user.
- the modification provides to deactivate or to modify the control parameters of said automatic control.
- Figure 1 is a top view of a cooking top according to the present invention.
- the aim of the present invention is to provide the induction cooking top 1 to be used also in the presence of small pans which are not sensed by the safety system that prevents inductors from being activated when nothing is on the cooking top.
- pan presence control is carried out for each cooking area of the induction cooking top, in the case this latter is divided into multiple areas, for example four areas (Fig.l) .
- One pan comprising ferromagnetic material can be positioned on each area.
- the areas can have a different size for differently sized pans.
- the system does not activate, for example in the presence of metallic cutlery on the top such to avoid the latter to be heated and to prevent the user from burning himself/herself when he/she touches it. Moreover the system does not activate also in the presence of nonmetallic objects.
- the system does not activate in the presence of a pan having such a size to have a surface in contact with the induction cooking top smaller than a size threshold (for example 50cm 2 ) and this can be an undesired operation, since in this case the user would like the system to operate and to activate.
- a size threshold for example 50cm 2
- a system which is adapted to modify the pan presence control, upon a command by the user, which has to be activated when the user decides to place a small-sized pan on the induction cooking top.
- Said modification can provide the control to be deactivated, or the control parameters to be modified, for example such to lower the pan presence detection threshold .
- the cooking top has an interface 2 of the "touch" type containing manual controls.
- the interface 2 Preferably on the interface 2 one or more dedicated push-buttons (A, B) are inserted, upon the activation thereof the pan presence control is modified.
- Preferred variants for safety purposes can provide a particular sequence of commands and/or activations of push-buttons A, B intended to by-pass the pan presence control.
- the system of the invention can be provided only for one area, for example the one with the smallest size and therefore with the lowest maximum power output .
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Surgical Instruments (AREA)
- Dry Shavers And Clippers (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112015007943A BR112015007943A2 (en) | 2012-10-15 | 2013-10-14 | induction cooktop |
US14/435,814 US11212880B2 (en) | 2012-10-15 | 2013-10-14 | Induction cooking top |
EP13812121.5A EP2907361B1 (en) | 2012-10-15 | 2013-10-14 | Induction cooking top |
US14/883,848 US10605464B2 (en) | 2012-10-15 | 2015-10-15 | Induction cooktop |
US16/774,740 US11655984B2 (en) | 2012-10-15 | 2020-01-28 | Induction cooktop |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000896A ITTO20120896A1 (en) | 2012-10-15 | 2012-10-15 | INDUCTION HOB |
ITTO2012A000896 | 2012-10-15 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/435,814 A-371-Of-International US11212880B2 (en) | 2012-10-15 | 2013-10-14 | Induction cooking top |
US14/883,848 Continuation-In-Part US10605464B2 (en) | 2012-10-15 | 2015-10-15 | Induction cooktop |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014060928A2 true WO2014060928A2 (en) | 2014-04-24 |
WO2014060928A3 WO2014060928A3 (en) | 2014-07-10 |
Family
ID=47428897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2013/059340 WO2014060928A2 (en) | 2012-10-15 | 2013-10-14 | Induction cooking top |
Country Status (6)
Country | Link |
---|---|
US (1) | US11212880B2 (en) |
EP (2) | EP3082379A1 (en) |
BR (1) | BR112015007943A2 (en) |
IT (1) | ITTO20120896A1 (en) |
PL (1) | PL2907361T3 (en) |
WO (1) | WO2014060928A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11655984B2 (en) | 2012-10-15 | 2023-05-23 | Whirlpool Corporation | Induction cooktop |
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GB2562621A (en) | 2016-02-23 | 2018-11-21 | Nchain Holdings Ltd | System and method for controlling asset-related actions via a blockchain |
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EP4274154A3 (en) | 2016-02-23 | 2023-12-20 | nChain Licensing AG | Secure multiparty loss resistant storage and transfer of cryptographic keys for blockchain based systems in conjunction with a wallet management system |
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PL2907361T3 (en) | 2016-10-31 |
BR112015007943A2 (en) | 2017-07-04 |
EP2907361B1 (en) | 2016-05-25 |
EP2907361A2 (en) | 2015-08-19 |
EP3082379A1 (en) | 2016-10-19 |
US11212880B2 (en) | 2021-12-28 |
WO2014060928A3 (en) | 2014-07-10 |
US20150296570A1 (en) | 2015-10-15 |
ITTO20120896A1 (en) | 2014-04-16 |
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