GB2504493A - Milk frother with magnetic drive - Google Patents

Milk frother with magnetic drive Download PDF

Info

Publication number
GB2504493A
GB2504493A GB1213540.6A GB201213540A GB2504493A GB 2504493 A GB2504493 A GB 2504493A GB 201213540 A GB201213540 A GB 201213540A GB 2504493 A GB2504493 A GB 2504493A
Authority
GB
United Kingdom
Prior art keywords
milk
whisk
frother
tank
magnetic drive
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB1213540.6A
Other versions
GB201213540D0 (en
GB2504493B (en
Inventor
Alex Gort-Barten
Original Assignee
Alex Gort-Barten
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
Application filed by Alex Gort-Barten filed Critical Alex Gort-Barten
Priority to GB1213540.6A priority Critical patent/GB2504493B/en
Publication of GB201213540D0 publication Critical patent/GB201213540D0/en
Publication of GB2504493A publication Critical patent/GB2504493A/en
Application granted granted Critical
Publication of GB2504493B publication Critical patent/GB2504493B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • A47J27/00Cooking-vessels
    • A47J27/004Cooking-vessels with integral electrical heating means
    • 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
    • A47J43/046Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven with tools driven from the bottom side
    • A47J43/0465Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven with tools driven from the bottom side with magnetic drive
    • 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
    • A47J43/0716Parts or details, e.g. mixing tools, whipping tools for machines with tools driven from the lower side
    • A47J43/0722Mixing, whipping or cutting tools

Abstract

A frother for heating and frothing milk for use in hot beverages such as coffee and hot chocolate. The frother comprises a flat-bottomed tank 5 for receiving the milk or other liquids to be frothed and heated. A whisk means 3 is positioned within the tank and comprises a whisk 10 connected to a central spindle 9. The whisk 10 is rotatably mounted on a support which holds the whisk off the bottom of the tank 5. The whisk 10 is driven by a magnetic drive means contained within the main body 2, which also contains a heater for heating the liquid as it is frothed or stirred. The whisk means 3 may have an arm to interrupt the vortex formed within the liquid during operation. The frother may also have a controller for the magnetic drive means, such that it can control the speed of rotation of the drive means. The magnetic drive means can be actuated by the switch 6 located on the exterior wall of the main body 2 at two different speeds.

Description

Milk Frother The invention relates to a milk frother and a drive mechanism for a milk frother.

Espresso based coffee drinks such as caffe latte and cappuccino have become increasingly popular and consumers want to be able to easily and reliably produce these drinks. Traditionally, baristas have been trained to use the steam generated by an espresso machine to heat and froth milk in a jug to produce the hot milk and froth required for these drinks. Producing the appropriate amount of hot milk and froth without burning the milk or damaging the jug requires some training or experience.

Smaller espresso machines are also much harder to use to treat the milk.

A number of separate milk frothers have been produced which are suitable for home or small scale commercial use. EP1 656866 discloses a frother with a tank to receive a milk-based liquid food with a magnetic beater. A magnetic beater driving system produces a magnetic field which drives the beater in rotation in the tank. The system, beater and a beater positioning unit break or prevent symmetrical circulation of the liquid around a median of vertical axis of the tank. Heating units are disposed in association with the tank for heating the liquid. This is used for preparing foam from a milk-based liquid food product.

GB2454421 discloses a device for frothing milk that is provided with a rotating heating element to be inserted in the milk. The device is provided with a whisk attachment for producing froth and a paddle attachment for producing a more creamy finish.

EP1827188 discloses a cordless milk frother having a stirrer mounted on a spindle, wherein the stirrer is held and driven magnetically in the tank by the stirrer drive system.

These devices share a number of problems. For example, the frothers (with internal elements and mains power) operate on fast speed so when using the whisk you get too much froth to milk, meaning you waste milk and energy but the paddle doesn't produce enough. Milk froth is moreover generally fairly tasteless.

Another problem with the known frothers having a whisk shaft powered from the lid of the frother is that when the milk is ready, the whisk is removed from the frother and is generally placed on a countertop, which results in some mess that needs to be cleaned up. The use of an internal spindle such as in EP1827188 also makes cleaning the tank harder.

A further problem with the known frothers is that the milk tends to burn on the element as when the frother has frothed the milk, the user immediately pours the milk out and a small residue remains behind, which burns on the element. If this is not cleaned quickly, the burnt on residue becomes difficult to remove and also affects future performance. The standard approach to this has been to reduce the temperature to which the milk is heated to around 60 C but at this temperature, the frothed milk is not suitable for use in other beverages such as hot chocolate, which would require a higher temperature to be palatable.

The present invention therefore seeks to provide a milk frother that is easier to use but more closely replicates the performance of an espresso machine.

According to the invention, a milk frother comprising a tank for receiving milk or a milk based liquid, which tank has walls and a bottom, magnetic drive means adapted to drive whisk means, which whisk means is adapted to rotate in the milk or milk based liquid to mix the heating milk or milk based liquid and to produce foam, the frother further comprising heating means adapted to heat the milk or milk based liquid, the magnetic drive means being located outside of the tank, wherein the whisk means comprise a support, on which support a whisk is rotatably mounted, which rotatably mounted whisk is rotatable by the magnetic drive means, wherein the support holds the whisk off the bottom of the tank.

Preferably, the whisk means comprises an arm, which arm is adapted to interrupt, in use, a vortex formed in the milk or milk based liquid.

Preferably, the support comprises an annular wall. Preferably, the annular wall is connected via a radial arm to a spindle on which spindle the whisk is rotatably mounted.

Preferably, the frother comprises a lid, which lid is provided with at least one hole to permit air in the tank which has been heated to escape from the tank.

Preferably the tank has a flat bottom. Preferably, the whisk means, in use, sits on the bottom of the tank.

An exemplary embodiment ot the invention will now be described in greater detail with refeience to the drawings in which: Fig. 1 shows an exploded view of the milk frother Figure 1 shows an exploded view of the frother comprising a base 1, a main body 2, whisk means 3 and a lid 4. The frother is cordless and the base is provided with an upstanding boss to provide the electrical connection from mains electricity to the frother body 2 such that the frother body can rotate through 3600 on the base and be lifted cleai when the milk or liquid is frothed without a cable be attached to the body 2.

The main body 2 comprises at its upper end a tank 5 which leceives the milk or liquid to be frothed and heated. The tank has a flat bottom 14. Magnetic drive means and heating means are located in the main body beneath the flat bottom of the tank 5.

The magnetic drive means is provided with a controller, which controller is adapted to control the speed of rotation of the drive means such that it can operate at at least two speeds. The magnetic drive means can be actuated by the switch 6 located on the exterior wall of the main body 2. It is possible to provide for more than one programme with the single switch. By way of example, pressing the switch once could provide for hot froth, pressing twice could provide by hot milk and press and hold could piovide for cold froth. The hot milk would be provided by slowing the motor speed and the cold froth by not actuating the heating element located beneath the flat bottom. This enables the same whisk to be used for froth and stirred/heated milk. Thus the whisk or stirrer is held in position by the whisk means rather than the magnetic drive means.

The whisk means 3 comprises an annular upstanding wall 7, which wall is joined by two radial arms 8 to an axial spindle 9. The spindle 9 extends above and below the radial arms 8. A whisk 10 is rotatably mounted on a rotatable drive shaft at the lower end of the spindle 9, which drive shaft is housed within the spindle 9. The upper poition of the spindle is provided with first and second annular protruding walls 11, 12. The first, lower wall 11 indicates the maximum advised level foi fiothed milk.

The second, upper wall 12 indicates the maximum advised level for heated milk. The height of the iadial aims indicates the minimum advised milk level.

The lid is provided with a seal around its edge to seal the tank in use and has two holes 13, which allow heated air to escape hereby increasing the working volume of the tank to be larger than it otherwise would be.

In use, the whisk means holds the whisk 10 substantially concentrically with the magnetic drive means located in the main body. The whisk 10 is held above the surface of the flat bottom, typically by about 3mm, thereby avoiding that the surface of the flat bottom might be scratched by the whisk action. This permits the interior of the tank 5 to be provided with either a polished stainless steel surface or alternatively a non stick coating. This also facilitates the magnetic drive means to run on for 20-seconds after the heating element is switched off. This enables the milk to be heated to a higher temperature suitable for hot chocolate dnnks. The heat is dissipated throughout the milk and does not burn on the bottom surface of the container.

The radial arms 8 will also interrupt the vortex that would develop due to the rotation of the whisk, which advantageously results in a better froth as well as increasing the working volume of the tank. The whisk means are also easily removable and are hence easy to clean. It would also be possible to ensure that the whisk means is dishwasher safe.

Claims (12)

  1. Claims 1. A milk frother comprising a tank for receiving milk or a milk based liquid, which tank has walls and a bottom, magnetic drive means adapted to drive whisk means, which whisk means is adapted to rotate in the milk or milk based liquid to mix the heating milk or milk based liquid and to produce foam, the frother further comprising heating means adapted to heat the milk or milk based liquid, the magnetic drive means being located outside of the tank, wherein the whisk means comprise a support, on which support a whisk is rotatably mounted, which rotatably mounted whisk is rotatable by the magnetic drive means, wherein the support holds the whisk off the bottom of the tank.
  2. 2. A milk frother according to Claim 1, wherein the whisk means comprises an arm, which arm is adapted to interrupt, in use, a vortex formed in the milk or milk based liquid.
  3. 3. A milk frother according to Claim 1 or Claim 2, wherein the support comprises an annular wall.
  4. 4. A milk frother according to Claim 3, wherein the annular wall is connected via a radial arm to a spindle on which spindle the whisk is rotatably mounted.
  5. 5. A milk frother according to any one of claims 1 to 4, wherein the frother comprises a lid, which lid is provided with at least one hole to permit air in the tank which has been heated to escape from the tank.
  6. 6. A milk frother according to any one of Claims ito 5, wherein the tank has a flat bottom.
  7. 7. A milk frother according to any one of Claims 1 to 6, wherein the whisk means, in use, sits on the bottom of the tank.
  8. 8. A milk frother according to any one of Claims 1 to 7, wherein the magnetic drive means is provided with a controller, which controller is adapted to control the speed of rotation of the drive means such that it can operate at at least two speeds.
  9. 9. A milk frother according to Claim 8, wherein the whisk is operable at a first speed to produce foam and a second speed to produce warm milk.
  10. 10. A milk frother according to any one of Claims ito 9, wherein the heating element is turned off a predetermined time prior to the magnetic drive means.
  11. ii. A milk frother according to Claim 10, wherein the predetermined time is in the range of 20 to 30 seconds
  12. 12. A milk frother substantially as described herein with reference to and as illustrated in the accompanying drawing.
GB1213540.6A 2012-07-30 2012-07-30 Milk frother Active GB2504493B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1213540.6A GB2504493B (en) 2012-07-30 2012-07-30 Milk frother

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1213540.6A GB2504493B (en) 2012-07-30 2012-07-30 Milk frother

Publications (3)

Publication Number Publication Date
GB201213540D0 GB201213540D0 (en) 2012-09-12
GB2504493A true GB2504493A (en) 2014-02-05
GB2504493B GB2504493B (en) 2017-03-22

Family

ID=46881381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1213540.6A Active GB2504493B (en) 2012-07-30 2012-07-30 Milk frother

Country Status (1)

Country Link
GB (1) GB2504493B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202878A1 (en) * 2015-06-16 2016-12-22 Nestec S.A. Foaming device
WO2018113418A1 (en) * 2016-12-22 2018-06-28 宁波宏一电器有限公司 Food processor having heating function
WO2019042082A1 (en) * 2017-08-31 2019-03-07 佛山市顺德区美的电热电器制造有限公司 Mixing blade assembly, mixing cup assembly, driving disc assembly and food processor
GB2576335A (en) * 2018-08-14 2020-02-19 Alex Gort Barten Hot chocolate maker

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070221068A1 (en) * 2004-11-12 2007-09-27 Boussemart Christophe S Appliance and method for preparing a froth from a food liquid
WO2009135758A1 (en) * 2008-05-07 2009-11-12 Compagnie Mediterraneenne Des Cafes Frothing machine for creating froth from a drink containing milk
CN201814438U (en) * 2010-08-26 2011-05-04 广东新宝电器股份有限公司 Milk-stirring frothing appliance
CN102309263A (en) * 2010-06-29 2012-01-11 首选实业有限公司 Magnetically-actuated milk foam maker
CN202287931U (en) * 2011-08-16 2012-07-04 佛山市顺德昀陶设计有限公司 Split-type milk foaming machine
AU2010342955A1 (en) * 2010-01-21 2012-09-13 Yuyao Sunboy Electric Appliance Co., Ltd. Milk foaming kettle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004113C2 (en) * 2010-01-19 2011-07-20 Foremost Bv Device for agitating liquid foodstuff.
CN105342460A (en) * 2010-06-11 2016-02-24 布瑞威利私人有限公司 Improved milk frother
WO2012076848A1 (en) * 2010-12-07 2012-06-14 Alex Gort-Barten Milk frother

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070221068A1 (en) * 2004-11-12 2007-09-27 Boussemart Christophe S Appliance and method for preparing a froth from a food liquid
WO2009135758A1 (en) * 2008-05-07 2009-11-12 Compagnie Mediterraneenne Des Cafes Frothing machine for creating froth from a drink containing milk
AU2010342955A1 (en) * 2010-01-21 2012-09-13 Yuyao Sunboy Electric Appliance Co., Ltd. Milk foaming kettle
CN102309263A (en) * 2010-06-29 2012-01-11 首选实业有限公司 Magnetically-actuated milk foam maker
CN201814438U (en) * 2010-08-26 2011-05-04 广东新宝电器股份有限公司 Milk-stirring frothing appliance
CN202287931U (en) * 2011-08-16 2012-07-04 佛山市顺德昀陶设计有限公司 Split-type milk foaming machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202878A1 (en) * 2015-06-16 2016-12-22 Nestec S.A. Foaming device
CN107660129A (en) * 2015-06-16 2018-02-02 雀巢产品技术援助有限公司 Foaming machine
WO2018113418A1 (en) * 2016-12-22 2018-06-28 宁波宏一电器有限公司 Food processor having heating function
WO2019042082A1 (en) * 2017-08-31 2019-03-07 佛山市顺德区美的电热电器制造有限公司 Mixing blade assembly, mixing cup assembly, driving disc assembly and food processor
GB2576335A (en) * 2018-08-14 2020-02-19 Alex Gort Barten Hot chocolate maker
WO2020035529A1 (en) * 2018-08-14 2020-02-20 Gort Barten Alex Frother for milk based beverages

Also Published As

Publication number Publication date
GB201213540D0 (en) 2012-09-12
GB2504493B (en) 2017-03-22

Similar Documents

Publication Publication Date Title
CN101972120B (en) Milk frother
EP1221883B1 (en) Automatic beverage frother
CN102846222B (en) Appliance for conditioning a milk-based liquid
CN100464679C (en) A domestic making appliance for preparing porridges
EP2526844B1 (en) Milk foaming kettle
AU2008342326B2 (en) Automatic milk foamer
CN101485541B (en) Cup for heating, stirring and foaming fluid food
US5074201A (en) Apparatus for manufacturing tonyu and tofu
ES2243910T3 (en) Device for foaming a drink, as well as automatic coffee machine with a set of this type.
US8733234B2 (en) Appliance for conditioning a milk-based liquid
ES2303231T3 (en) Procedure for preparing foam from food liquids from milk and procedure for implementation.
EP2579753B1 (en) Milk frother
EP2000067B1 (en) Appliance for preparing a froth from a food liquid
CN103735158B (en) Multifunctional gold egg steamer
EP2273904B1 (en) Apparatus for preparing food
RU2637739C2 (en) Multifunctional vessel and beverage preparation machine in which it is used
US8726790B2 (en) Milk frothing device
EP2198762B1 (en) Device for the preparation of hot beverages, in particular milk-based beverages such as cappuccino, chocolate and similar
US7270156B2 (en) Beverage mixer and heater
CN104921621A (en) Low-vibration full-automatic grinder
AU2011296154A1 (en) Food processing and preparation apparatus
JP6670367B2 (en) Espresso milk frother
US10485060B2 (en) Food processing apparatus
WO2010023313A1 (en) Appliance for fine steam-frothing a milk-based liquid
ES2321427T3 (en) Device for the generation of milk foam.