WO1997034518A1 - An apparatus for providing energy to kitchen appliances - Google Patents

An apparatus for providing energy to kitchen appliances Download PDF

Info

Publication number
WO1997034518A1
WO1997034518A1 PCT/DK1997/000115 DK9700115W WO9734518A1 WO 1997034518 A1 WO1997034518 A1 WO 1997034518A1 DK 9700115 W DK9700115 W DK 9700115W WO 9734518 A1 WO9734518 A1 WO 9734518A1
Authority
WO
WIPO (PCT)
Prior art keywords
appliance
kitchen appliances
apparatus
energy
base
Prior art date
Application number
PCT/DK1997/000115
Other languages
French (fr)
Inventor
Christian Eskildsen
Original Assignee
Aktiebolaget Electrolux
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DK0301/96 priority Critical
Priority to DK30196 priority
Application filed by Aktiebolaget Electrolux filed Critical Aktiebolaget Electrolux
Publication of WO1997034518A1 publication Critical patent/WO1997034518A1/en

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B6/00Heating by electric, magnetic, or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/10Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12Cooking devices
    • H05B6/1209Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1236Cooking devices induction cooking plates or the like and devices to be used in combination with them adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Miscellaneous implements for preparing or holding food
    • A47J43/04Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08Driving mechanisms
    • A47J43/085Driving mechanisms for machines with tools driven from the lower side

Abstract

Small kitchen appliances, such as coffee mills, mixers, or minor food processors may be energized in a cordless fashion by supplying the energy in the form of an ELF field from an induction cooking coil disposed in a tabletop. The base of the appliance has a receiving coil, and suitable convertor means provide e.g. DC for running the motor inside the appliance. Simple removal will turn the appliance off.

Description

An apparatus for providing energy to. kitchen appliances.

The invention relates to an apparatus for providing energy to kitchen appliances.

Electrical kitchen appliances are commonly provided with a lead and a plug for connection to an electrical power outlet. Some appliances, such as coffee makers are more or less permanently connected while others may have only occasional use. It has been recognized that winding and unwinding the lead may be impractical, and excess lead prevents the full utilization of the kitchen worktop, as putting bowls or the like on top of the lead is not very conducive to stability. To improve this situation, one type of lead is spiralled so that it will not rest on the table, while other appliances may have a provision for storing the unused part of the lead behind a skirt in the base. Furthermore experience shows that most consumers pull the lead in order to extract the plug which eventually leads to a break in the wires. Electric kettles have lately been provided with a base to which the kettle itself is pluggable. This has the double advantage that lifting the kettle off the base disconnects the power. There is perceived a need to provide wire-less connection to many kitchen appliances, in particular those which are not only hand-held. This would comprise coffee mills, mixers, or minor food processors. The apparatus according to the invention is particular in that it comprises a converter to ELF energy, a transmitting coil in a base and a receiving coil in the appliance, and a converter from ELF energy to the internal drive voltage in the appliance. In this manner, each appliance need only be moved on top of the base containing the transmitting coil, and the power is transmitted by induction. This is a safe distribution method which will only be active when there is a load on the converter, due to the built-in safety features of the induction heating power supply.

An advantageous embodiment of the invention is particular in that a number of transmitting zones are distributed in the worktop flush with the surface. The zones need not be provided with heat resistant surfaces. The appliances have a base which may be put on the selected zone, and the required power for its running is provided therefrom. Several zones may be active at the same time, provided the total consumption does not exceed the maximum that can be provided from the converter disposed in conjunction with the table top or that the total mains power consumption does not exceed the limit of the mains fuses.

The invention will be described in greater detail in the following with reference to the drawing which shows a kitchen table provided with transmitting zones and power consuming appliances. In the drawing, the table top 1 has a number of transmitting zones 2, 2', 2" containing coils acting as transformer primaries which are each connected to a power converter 3, 3' , 3" obtaining its power from the mains 4. An appliance 5 has a base 6 containing a receiving coil and a top 7 which performs the required function. In the drawing the generic appliance 5 is intended to represent a blender. The converters are of a type which does not provide ELF energy (above 20 kHz but below 100 kHz) when there is no load. The base 6 contains the receiving coil which acts as a secondary of a transformer, and furthermore means for converting the received energy to the voltage required by the appliance, in the present case a motor. There may be economic advantages in providing the appliance with an electric motor used in the automotive industry where 12 V is the standard; such motors are manufactured in bulk. In use, the appliance is simply centered on the transmitting zone which may be indicated in a contrasting colour in the table top, and it is ready to be switched on. If the appliance is needed in another spot on the table top, it iε simply moved to the zone nearest that spot. Several appliances may be used simultaneously.

Claims

P A T E N T C L A I M S
1. An apparatus for providing energy to kitchen appliances, c h a r a c t e r i z e d i n that it comprises a converter to ELF energy, a transmitting coil in a base and a receiving coil in the appliance, and a converter from ELF energy to the internal drive voltage in the appliance.
2. An apparatus according to claim 1, c h a r a c t e r i z e d i n that a number of transmitting zones are distributed in the worktop flush with the surface.
PCT/DK1997/000115 1996-03-15 1997-03-17 An apparatus for providing energy to kitchen appliances WO1997034518A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK0301/96 1996-03-15
DK30196 1996-03-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU20227/97A AU2022797A (en) 1996-03-15 1997-03-17 An apparatus for providing energy to kitchen appliances

Publications (1)

Publication Number Publication Date
WO1997034518A1 true WO1997034518A1 (en) 1997-09-25

Family

ID=8092008

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1997/000115 WO1997034518A1 (en) 1996-03-15 1997-03-17 An apparatus for providing energy to kitchen appliances

Country Status (2)

Country Link
AU (1) AU2022797A (en)
WO (1) WO1997034518A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355150B2 (en) * 2006-03-23 2008-04-08 Access Business Group International Llc Food preparation system with inductive power
US7989986B2 (en) 2006-03-23 2011-08-02 Access Business Group International Llc Inductive power supply with device identification
US8692639B2 (en) 2009-08-25 2014-04-08 Access Business Group International Llc Flux concentrator and method of making a magnetic flux concentrator
US8893977B2 (en) 2010-04-08 2014-11-25 Access Business Group International Llc Point of sale inductive systems and methods
EP3259051A4 (en) * 2015-02-17 2018-12-19 Vita-Mix Management Corporation Interlocking blending system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Vol. 17, No. 53; & JP,A,04 263 703, (MITSUBISHI ELECTRIC CORP), 18 Sept. 1992. *
PATENT ABSTRACTS OF JAPAN, Vol. 372; & JP,A,09 115 660, (TOSHIBA KK), 2-5-1997. *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355150B2 (en) * 2006-03-23 2008-04-08 Access Business Group International Llc Food preparation system with inductive power
US7989986B2 (en) 2006-03-23 2011-08-02 Access Business Group International Llc Inductive power supply with device identification
US8097984B2 (en) 2006-03-23 2012-01-17 Access Business Group International Llc Inductive power supply with device identification
US10305329B2 (en) 2006-03-23 2019-05-28 Philips Ip Ventures B.V. Inductive power supply with device identification
US10312732B2 (en) 2006-03-23 2019-06-04 Philips Ip Ventures B.V. System and method for device identification
US9247588B2 (en) 2006-03-23 2016-01-26 Access Business Group International Llc System and method for device identification
US9318912B2 (en) 2006-03-23 2016-04-19 Access Business Group International Llc Inductive power supply with device identification
US8692639B2 (en) 2009-08-25 2014-04-08 Access Business Group International Llc Flux concentrator and method of making a magnetic flux concentrator
US9424446B2 (en) 2010-04-08 2016-08-23 Access Business Group International Llc Point of sale inductive systems and methods
US8893977B2 (en) 2010-04-08 2014-11-25 Access Business Group International Llc Point of sale inductive systems and methods
US9027840B2 (en) 2010-04-08 2015-05-12 Access Business Group International Llc Point of sale inductive systems and methods
EP3259051A4 (en) * 2015-02-17 2018-12-19 Vita-Mix Management Corporation Interlocking blending system

Also Published As

Publication number Publication date
AU2022797A (en) 1997-10-10

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