EP2081476A2 - Mousseur à lait électrique - Google Patents

Mousseur à lait électrique

Info

Publication number
EP2081476A2
EP2081476A2 EP07800674A EP07800674A EP2081476A2 EP 2081476 A2 EP2081476 A2 EP 2081476A2 EP 07800674 A EP07800674 A EP 07800674A EP 07800674 A EP07800674 A EP 07800674A EP 2081476 A2 EP2081476 A2 EP 2081476A2
Authority
EP
European Patent Office
Prior art keywords
shaft
attachment point
foaming element
foaming
coil
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.)
Withdrawn
Application number
EP07800674A
Other languages
German (de)
English (en)
Inventor
Jørgen BODUM
Thomas Studer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pi Design AG
Original Assignee
Pi Design AG
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 Pi Design AG filed Critical Pi Design AG
Publication of EP2081476A2 publication Critical patent/EP2081476A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/10—Egg-whisks; Cream-beaters, i.e. hand implements or hand-driven devices
    • A47J43/1087—Whisks or similar tools comprising mixing wires
    • A47J43/1093—Whisks or similar tools comprising mixing wires the wires being of the closed-loop type mounted at the end of a shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/26—Foam

Definitions

  • the present invention relates to a device for frothing a liquid food, in particular milk.
  • a device for frothing a liquid food, in particular milk.
  • Such a device is referred to below as a milk frother.
  • Compact, battery-powered milk frothers are known from the prior art, which comprise a drive part with an electric motor and a battery compartment, a shaft extending downwardly from the drive part connected to the electric motor, and a foaming element attached to the lower end of the shaft.
  • the foaming element can in particular be designed as a toroidal coil which extends perpendicular to the shaft around the longitudinal direction defined by the width and is guided on an annular wire bow.
  • Such milk frothers are disclosed, for example, in US-A-2003/0177914 or US-A-6,558,035.
  • U.S. Design No. 476,523 discloses a milk frother having a frothing member having a conical shape that greatly widens downwardly, with shafts formed at the base of the cone in the surface of the frothing member.
  • Such milk frothers produce foam by introducing air into the milk and finely dividing the resulting air bubbles. In this way, a mixture of milk and finely distributed air bubbles, which is caused by the
  • Characteristics of the milk is stabilized to a foam. It is important that the milk frother is even able to introduce air into the milk. In the known milk frothers, the user must periodically move the frothing element between the bottom of the vessel and the surface of the milk in the vessel to ensure on the one hand that the frothing element at all introduces air to the surface of the milk and, on the other hand, throughout Vessel the bubbles are crushed enough. On the other hand, if the user were to hold the frothing element only in the region of the bottom of the vessel, the milk would indeed be stirred, but no foam would be produced.
  • the device should also be easy to handle and simple and inexpensive to produce and be suitable for foaming different amounts of the liquid.
  • the inventive device comprises a drive which is suitable for generating a rotational movement, for example an electric motor.
  • the drive is usually generate a uniform rotation in a predetermined direction, but can also produce a torsional vibration, ie a periodic back and forth Herrot Schlieren.
  • a shaft is connected to the drive and is rotated by this.
  • at least one elongated, flexible (flexible) foaming element is provided, which is connected to the shaft at two axially different attachment points. In this case, at least during operation of the device, the length of the foaming element between the fastening points is greater than the distance of the fastening points, so that the foaming element assumes a curved, preferably multiply curved shape.
  • the frothing element extends through the surface of the liquid to be frothed and, upon rotation of the shaft, causes air bubbles to be introduced into the liquid, which are then further comminuted by the frothing element.
  • a foaming effect is achieved regardless of how far the milk frother is immersed in the liquid.
  • a foaming effect is achieved regardless of the liquid level in the vessel in which the liquid is located.
  • the foaming element is sufficiently flexible that it can change its shape by centrifugal forces acting on the foaming element during operation of the device.
  • the change in shape can be elastic or plastic nature.
  • the foaming element can also have a length-elastic design, so that it can increase its length due to the centrifugal forces.
  • the foaming element has only in operation due to such forces a greater length than is given by the distance between the attachment points, and only then obtains a curved shape.
  • the foaming element when foaming a liquid and forces due to the flow resistance act on the foaming element and can also a change in shape and possibly a change in length.
  • the foaming element due to the combined centrifugal and flow forces and due to its flexibility and optionally length elasticity, assumes a shape which substantially follows the surface of the liquid to be foamed in a partial region of the foaming element. As a result, air is mixed into the liquid very efficiently over a relatively large area, resulting in a high foaming effect.
  • the foaming element can also be curved in a general meandering manner without significantly changing its shape during operation.
  • a meander-shaped element is to be understood quite generally as an element of an elongated basic shape whose longitudinal direction undergoes a change of direction several times or continuously. In this way, a meander-shaped element has a greater length than is given by the direct distance between the two ends of the element.
  • the foaming element can be curved in a spiral or helical manner. Under a spiral-shaped element is an element of elongated basic shape to understand, the longitudinal direction is continuously wound around a spiral axis.
  • the term "meandering" thus forms a generic term for the term "spiraling". If the distance of the longitudinal axis of the body to the spiral axis is constant, a spiral element may also be referred to as helical.
  • the foaming element extends substantially continuously along the entire length of the shaft between a housing near and a housing-distal end of the shaft. In this way, a foaming effect is achieved at any liquid level.
  • the maximum radial distance of the frothing member from the shaft is preferably less than the axial distance of the first and second attachment points to the shaft, more preferably less than half the axial distance.
  • the foaming element preferably does not extend too far from the shaft removed in order to avoid excessive imbalance on the drive and a splashing of the liquid to be foamed.
  • the foaming element can additionally be fixed to the shaft at least in a radial direction at at least one third fastening point, which lies between the first and the second fastening point.
  • the third attachment point is preferably designed axially displaceable. In this way, the shape which the foaming element assumes during operation can be varied and adapted to different operating situations, in particular different amounts of liquid to be foamed.
  • the foaming element is designed as a flexible helical coil, in particular as a wire coil. If the wire is not too thick and rigid, such a coil has a coil axis which is bendable even under relatively low forces. Selected turns of the helical coil can be penetrated by the shaft at the attachment points. However, it is also conceivable to fix the helical coil such that the shaft does not penetrate any of the turns, e.g. is fixed to the shaft via clamps or loops.
  • the coil may optionally be mounted on a support member, e.g. in the form of a flexible filament or wire. In terms of a simplified cleaning, however, an unsupported coil is preferred.
  • the invention also relates generally to a device for foaming liquid foods, which has a drive, a shaft drivable therefrom and connected to the shaft foaming element, wherein the foaming element comprises a helical coil, which at two axially different attachment points with the shaft is connected, so at least along a portion of the shaft, preferably substantially over the entire length of the shaft extends.
  • the coil does not necessarily have to be flexible.
  • the coil is preferably meander-shaped, in particular spiral-shaped, curved.
  • at least one more Attachment point provided on the shaft preferably at least one more Attachment point provided on the shaft.
  • the device according to the invention may comprise a further foaming element, which is attached to the housing-distal end of the shaft.
  • the first foaming element may be conventional, i. in any known manner, be formed, in particular comprise a toroidal coil arranged substantially perpendicular to the shaft.
  • a toroidal coil is understood to mean an elongated, helical coil whose helical axis is curved to form a ring or partial ring.
  • the ring is a circular ring, but other basic shapes of the ring are conceivable, such as e.g. U.S. Patent Nos. 489,583 and 490,667 disclose oval and heart-shaped substantially annularly closed shapes.
  • the ring defines an annular plane, which preferably extends substantially perpendicular to the longitudinal direction defined by the shaft.
  • the coil is guided on a support element, preferably in the form of an open or closed ring, which extends through the turns of the coil.
  • This annular support member is preferably designed as an integral with the shaft of a sufficiently strong wire-shaped wire ring. The proposed shape has generally proved very useful for the production of foam.
  • the drive preferably comprises an electric motor, in particular a battery-operated electric motor.
  • the electric motor and the optionally existing batteries are housed in a common housing.
  • the housing may be configured to be held in the hand of a user, or may be configured to be seated on a vessel.
  • a differently shaped drive could also be present, for example a manual drive, for example a crank drive or an electric motor fed by a solar cell.
  • the method can be used.
  • means for holding the housing in the vessel are preferably formed on a housing accommodating the drive, for example stop elements in the form of rings, projections or arms with which the housing can be placed on the upper edge of a vessel.
  • an annular bearing surface is formed on the housing, with which the housing can be placed on the upper edge of the vessel. In this way it is ensured that the liquid to be foamed can not spray out of the vessel.
  • the invention also includes devices in which the drive unit is held in the hand and guided by hand. Also in this case, the presence of a second foaming element extending meandering along the shaft offers advantages in foaming the liquid.
  • the device according to the invention is preferably used as a milk frother, it can of course also be used for frothing other liquids, including multiphase liquids, for example for preparing salad dressings from vinegar, oil and optionally further ingredients, for whipping egg whites or for stirring in chocolate or pudding powder in milk and for similar applications.
  • frothing other liquids including multiphase liquids, for example for preparing salad dressings from vinegar, oil and optionally further ingredients, for whipping egg whites or for stirring in chocolate or pudding powder in milk and for similar applications.
  • FIG. 1 shows a perspective view of a milk frother according to the invention in accordance with a first embodiment
  • FIG. 2 shows a perspective view of a milk frother according to the invention in accordance with a second embodiment.
  • the milk frother has a drive part 10 with a housing 11, in which an electric motor and batteries for driving the electric motor are housed.
  • the electric motor can be switched on and off by a switch 12, which is centrally mounted here, but can also assume another, for example, lateral position.
  • a switch 12 which is centrally mounted here, but can also assume another, for example, lateral position.
  • From the lower end of the housing 11 protrudes a shaft 30, which is protected in the region of the passage through the housing with an optional helical reinforcing element 31 against kinking.
  • a conventional lower foaming element 32 is formed, which consists of an annular support member 33 and a toroidal coil 34.
  • the support member 33 is formed as a continuation of the shaft by the lower end of the shaft made of solid wire was curved into a ring.
  • An upper foaming element 40 described in more detail below is also arranged on the shaft.
  • the milk frother 1 is adapted to rest with the housing 11 on the upper edge of a cup, not shown in the drawings.
  • an annular bearing surface 13 is formed for this purpose.
  • the diameter of the housing 11 and the cup are matched to one another in such a way that the milk frother can be placed tightly on the cup. This prevents the milk from splashing out when milk is being frothed.
  • the upper foaming element 40 consists of a long coil, ie a coil whose length is considerably larger than its diameter and which has a plurality of turns.
  • the coil is made of a suitable material such that it is flexible even against small forces and elastic in length to a certain extent.
  • One end of the coil is connected at an attachment point 41 or 42 fixed to the shaft 30 near the housing near or housing-remote end, for example by soldering, gluing or spot welding.
  • the relatively fine wire of the coil whose diameter is considerably smaller than that of the shaft, at the attachment points through Pass radial holes in the shaft and fix in this way in the shaft.
  • the shaft 30 is passed through the top seven turns of the coil.
  • the coil extends so along the entire length of the shaft from the reinforcing member 31 in the housing 11 to the lower foaming element 32. Since the length of the coil is greater than the distance of the attachment points 41, 42, the coil is curved in itself and has areas which have a certain radial distance from the moment.
  • the coil is additionally connected to the shaft at a third attachment point 43 by passing the shaft through a few turns in a middle region of the coil.
  • This type of connection allows the position of this third attachment point to be varied along the axial direction 50 by simply axially displacing the turns that are traversed by the shaft along the shaft 30.
  • another way of sliding the coil to the shaft is possible.
  • the shaft 30 is rotated by the drive unit 10.
  • the lower foaming element 32 and the upper foaming element 40 also rotate about the longitudinal direction of the shaft 30.
  • the lower foaming element 32 is located below the surface of the liquid to be foamed, for example the milk, and would in this position, taken alone, stir the milk but produce little or no foam, as no air would enter the milk. This function takes over instead the upper foaming element 40.
  • the upper foaming element is replaced in the Example of centrifugal force and flow resistance try to get to the surface of the milk, and thereby approach at least in a portion of the surface shape of the rotating milk in the vessel.
  • the third, movable fastening point 43 will also move axially in such a way that the flow losses will be minimized. Since the rotational speed of the near-surface portions of the milk will never fully match that of the upper frothing member 40, the upper frothing member can thus very efficiently produce air bubbles in the milk in a large area of the surface of the milk. These are then comminuted together by the upper and lower foaming element together, so that ultimately forms a finely divided, stable foam.
  • the coil 40 is designed and fastened so that it can not assume too great a distance from the shaft 30.
  • the maximum distance R is in particular considerably smaller than the distance D of the outermost attachment points or as the length of the shaft, in the present example less than half of this distance.
  • the shaft 30, the toroidal coil 34 and the upper foaming element 40 are preferably made of stainless steel, but may also be made of another food-grade material, in particular also at least partially made of plastic.
  • FIG. 2 A second embodiment is shown in FIG. 2.
  • the basic structure is similar to that of the first embodiment. Same or like elements are denoted by the same reference numerals as in the first embodiment and will not be described again here.
  • the upper foaming element 40 is in turn designed as a coil, but at three other points 43, 44 and 45 except at its ends penetrated by the shaft 30, thereby fixed in the radial direction and thus ultimately meandering or spirally guided along the shaft.
  • the radial freedom of movement of the foaming element 40 is greatly reduced compared to the first example. While the foaming effect in this embodiment is somewhat lower than in the first embodiment, the imbalance is better compensated here and the tendency to produce splashes is reduced. While the use of a very flexible, flexible coil also leads to an improved foaming effect here, in the case of the device of the second exemplary embodiment, a relatively rigid coil can also be used for the second foaming element, which does not significantly deform during operation.
  • the shaft 30 is straight. But it can also be curved in itself, e.g. helical or generally meandering.
  • the coil which forms the upper foaming element 40 is generally meander-shaped in the second exemplary embodiment
  • the coil axis can also be guided in a targeted spiral manner around the shaft.
  • a suitable choice of the direction of rotation of the shaft 30 such a helically or helically curved second foaming element can specifically convey air bubbles from a region of the liquid near the surface down into a region near the bottom.
  • the coil of the upper foaming element is not penetrated by a further guide or carrier element.
  • the upper foaming member 40 is formed as a coil. While a coil shape is advantageous because it causes a very fine division of the air bubbles, but the upper foaming element can also be designed differently. Of particular importance is the suitability of the upper foaming element to produce air bubbles in the liquid in the region of the surface of the liquid.
  • other forms are suitable, e.g. a wire provided with many small bristles of the same or different material, a flexible plastic tube or an elongate, flat or otherwise shaped rubber element.
  • a single upper foaming element it is also possible to provide a plurality of such elements, which is also advantageous for the prevention of imbalance.
  • the lower foaming element does not need to be formed as a toroidal coil, but may take a suitable other form, for.
  • the drive member 10 is formed in the present example to be placed on a cup 20.
  • completely different shapes are conceivable for the drive part 10 in this respect.
  • arms extend radially outward from the drive part 10, with which the drive part can be placed on vessels of different diameters.
  • the drive part is designed such that it can be grasped in a simple manner by hand and held in the hand during operation, that is, for example, has an elongated housing shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

L'invention concerne un mousseur à lait qui comprend un entraînement (10) entraînant un arbre (30). A l'arbre est relié un élément mousseur allongé, flexible et incurvé (40) dont la forme varie et qui, en fonctionnement, s'adapte de préférence à la surface du liquide à faire mousser. Selon un mode de réalisation concret de l'invention, l'élément mousseur est réalisé sous forme de bobine hélicoïdale flexible. Un autre élément mousseur (32) peut en outre être placé à l'extrémité inférieure de l'arbre.
EP07800674A 2006-10-25 2007-10-03 Mousseur à lait électrique Withdrawn EP2081476A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH17062006 2006-10-25
PCT/CH2007/000489 WO2008049246A2 (fr) 2006-10-25 2007-10-03 Mousseur à lait électrique

Publications (1)

Publication Number Publication Date
EP2081476A2 true EP2081476A2 (fr) 2009-07-29

Family

ID=38055434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07800674A Withdrawn EP2081476A2 (fr) 2006-10-25 2007-10-03 Mousseur à lait électrique

Country Status (4)

Country Link
US (1) US8196905B2 (fr)
EP (1) EP2081476A2 (fr)
AU (1) AU2007308664A1 (fr)
WO (1) WO2008049246A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ584978A (en) 2007-11-05 2012-06-29 Pi Design Ag Milk frothing apparatus having improved frothing effect which utilises a drive unit
WO2013119880A1 (fr) 2012-02-07 2013-08-15 Global Bio Therapeutics Usa, Inc. Procédé compartimenté d'administration d'acide nucléique et ses compositions et utilisations
CN104414507A (zh) * 2013-08-30 2015-03-18 美的集团股份有限公司 食物处理机
CN104257271B (zh) * 2014-09-01 2017-01-11 广东新宝电器股份有限公司 一种流体驱动搅拌装置
DE102016102795B4 (de) * 2016-02-17 2017-10-19 Dhp Gastronomie Gmbh Filterelement und Milchaufschäumer mit einem Filterelement
DE102016104404B3 (de) 2016-03-10 2017-06-01 Übermorgen Innovations GmbH Milchaufschäumer mit Rückkopplungskreislauf
JP6467606B1 (ja) * 2017-10-01 2019-02-13 株式会社ペーパームーン京都 飲食物の攪拌装置、攪拌ユニット、攪拌方法および点茶方法
CA3139668A1 (fr) * 2019-05-07 2020-11-12 Brayton BUSHBY Dispositifs shakers
EP4340855A1 (fr) 2021-08-13 2024-03-27 Triovance Holding LLC Composition de substitut de peau et ses procédés de production et d'utilisation
USD991734S1 (en) * 2021-12-23 2023-07-11 Hong Kong Ruiying International Trade Co., Limited Milk frother
USD970311S1 (en) 2022-05-02 2022-11-22 Shlomi Ringel Beverage frother and whisk

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DE2843369C2 (de) 1978-10-05 1986-09-11 A.Stephan u.Söhne GmbH & Co, 3250 Hameln Misch- und Knetwerkzeug
EP0645979B1 (fr) 1992-06-12 1996-05-15 KHAN, Kameel Ameliorations apportees a des appareils a emulsionner les liquides
US5780087A (en) * 1996-09-23 1998-07-14 Brady; Frank A. Apparatus and method for frothing liquids
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US6558035B2 (en) * 2000-09-04 2003-05-06 Aerolatte Limited Electric whisk
IL138418A (en) * 2000-09-12 2005-08-31 Arie Schub Whipping device
CA100941S (en) * 2002-04-25 2004-01-28 Pi Design Ag Thermos coffee maker
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Title
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Also Published As

Publication number Publication date
US20100295194A1 (en) 2010-11-25
US8196905B2 (en) 2012-06-12
WO2008049246A2 (fr) 2008-05-02
AU2007308664A1 (en) 2008-05-02
WO2008049246A3 (fr) 2008-07-03

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