US 11,206,941 B2Granted

High torque magnetic transmission for whisk

AssigneeSociete des Produits Nestle S.A.

InventorsSamer Abdo, Da Mi Byun, Sylvain DeCastel, Bertrand Guyon, Johan Nieuwendijk, Mohamed Raad, Martino Ruggiero, Laurent Seydoux, Wolfgang Tuider

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Abstract

A machine (1) for stirring a liquid food substance has: a container (10) delimiting a cavity (11) with a bottom (12) and a peripheral wall (13) for containing the liquid food substance to be stirred; an impeller (20) comprising an impelling member (21) which is configured to be rotated in the cavity (11), the impeller (20) including an arrangement of driven magnetic elements (26) in the form of permanent magnets; and a motor (30) having an output shaft (31) that is magnetically coupled to the impelling member (21) via the container bottom (12) and/or peripheral wall (13) for driving the impelling member (21), the output shaft (31) driving an arrangement of driving magnetic elements (36,36′) that cooperate magnetically with the driven magnetic elements (26) so as to drive the impeller (20) in rotation. One of the driven magnetic elements (26) is positioned to: generally face a first driving magnetic element (36) in a generally attraction orientation relative to said one driven magnetic element (26), the first driving magnetic element (36) driving this one driven magnetic element (26) in rotation; and be off-set relative to a second driving magnetic element (36′) in a generally repulsion orientation relative to the one driven magnetic element (26), the second magnetic element (36′) driving the one driven magnetic element (26) in rotation.

Claims19

Dependent claims

A machine for stirring a liquid food substance, the machine comprising:

a container defining a cavity with a bottom and a peripheral wall for containing the liquid food substance to be stirred, the cavity extending generally along a generally upright central container axis and having a mouth configured for removing from the container the liquid food substance upon stirring;
an impeller comprising an impelling member configured to be rotated in the cavity against the liquid food substance about an impeller axis that is generally identical or generally parallel to the generally upright central container axis, the impeller including an arrangement of driven magnetic elements in the form of permanent magnets;
a motor having an output shaft that is magnetically coupled to the impelling member via the container bottom and/or the peripheral wall, the motor being configured for driving the impelling member, and the output shaft being configured for driving an arrangement of driving magnetic elements that cooperate magnetically with the arrangement of driven magnetic elements to drive the impeller in rotation, and
one driven magnetic element of the arrangement of driven magnetic elements is positioned to:
generally face a first driving magnetic element of the arrangement of driving magnetic elements in a generally attraction orientation relative to the one driven magnetic element, the first driving magnetic element driving the one driven magnetic element in rotation;
and
be off-set relative to a second driving magnetic element of the arrangement of driving magnetic elements in a generally repulsion orientation relative to the one driven magnetic element, the driving second magnetic element driving the one driven magnetic element in rotation;
wherein the motor is located in a motor chamber separate from the container, the motor chamber being located in a docking station for removably receiving the container;
and
wherein a removal force in the range of 1 to 50 N is required to remove the impeller in a direction away from the arrangement of driving magnetic elements when the impeller is in place in the cavity in a position for being rotated against the liquid food substance.

7 more elements

A machine for stirring a liquid food substance, the machine comprising:

a container defining a cavity with a bottom and a peripheral wall for containing the liquid food substance to be stirred, the cavity extending generally along a generally upright central container axis and having a mouth configured for removing from the container the liquid food substance upon stirring;
an impeller comprising an impelling member configured to be rotated in the cavity against the liquid food substance about an impeller axis that is generally identical or generally parallel to the generally upright central container axis, the impeller including an arrangement of driven magnetic elements in the form of permanent magnets;
a motor having an output shaft that is magnetically coupled to the impelling member via the container bottom and/or the peripheral wall, the motor being configured for driving the impelling member, and the output shaft driving an arrangement of driving magnetic elements that cooperate magnetically with the arrangement of driven magnetic elements to drive the impeller in rotation;
and
one or more travel stops configured for preventing the impelling member from moving:
above a maximum height when rotated;
and/or
below a minimum height when standing still;
one driven magnetic element of the arrangement of driven magnetic elements is positioned to:
generally face a first driving magnetic element of the arrangement of driving magnetic elements in a generally attraction orientation relative to the one driven magnetic element, the first driving magnetic element driving the one driven magnetic element in rotation;
and
be off-set relative to a second driving magnetic element of the arrangement of driving magnetic elements in a generally repulsion orientation relative to the one driven magnetic element, the driving second magnetic element driving the one driven magnetic element in rotation;
and
wherein the impelling member is spaced above the bottom of the cavity between:
a maximum stirring distance when the impelling member is rotated at a maximum stirring level at a maximum stirring speed about the impeller axis;
and
a resting distance when the impelling member stands still at a resting level,
the maximum stirring distance being greater than the resting distance.

15 more elements

A machine for stirring a liquid food substance, the machine comprising:

a container defining a cavity with a bottom and a peripheral wall for containing the liquid food substance to be stirred, the cavity extending generally along a generally upright central container axis and having a mouth configured for removing from the container the liquid food substance upon stirring;
an impeller comprising an impelling member configured to be rotated in the cavity against the liquid food substance about an impeller axis that is generally identical or generally parallel to the generally upright central container axis, the impeller including an arrangement of driven magnetic elements in the form of permanent magnets;
a motor having an output shaft that is magnetically coupled to the impelling member via the container bottom and/or the peripheral wall, the motor being configured for driving the impelling member, and the output shaft driving an arrangement of driving magnetic elements that cooperate magnetically with the arrangement of driven magnetic elements to drive the impeller in rotation;
and
a guide configured for guiding the impelling member between the maximum stirring level and the resting level;
one driven magnetic element of the arrangement of driven magnetic elements is positioned to:
generally face a first driving magnetic element of the arrangement of driving magnetic elements in a generally attraction orientation relative to the one driven magnetic element, the first driving magnetic element driving the one driven magnetic element in rotation;
and
be off-set relative to a second driving magnetic element of the arrangement of driving magnetic elements in a generally repulsion orientation relative to the one driven magnetic element, the driving second magnetic element driving the one driven magnetic element in rotation;
and
wherein the impelling member is spaced above the bottom of the cavity between:
a maximum stirring distance when the impelling member is rotated at a maximum stirring level at a maximum stirring speed about the impeller axis;
and
a resting distance when the impelling member stands still at a resting level,
the maximum stirring distance being greater than the resting distance.

12 more elements

A machine for stirring a liquid food substance, the machine comprising:

a container defining a cavity with a bottom and a peripheral wall for containing the liquid food substance to be stirred, the cavity extending generally along a generally upright central container axis and having a mouth configured for removing from the container the liquid food substance upon stirring;
an impeller comprising an impelling member configured to be rotated in the cavity against the liquid food substance about an impeller axis that is generally identical or generally parallel to the generally upright central container axis, the impeller including an arrangement of driven magnetic elements in the form of permanent magnets, and the impeller has a support that is relatively movable to the impelling member and that is rotated to rotate the impelling member, the support having a drive surface;
and
a motor having an output shaft that is magnetically coupled to the impelling member via the container bottom and/or the peripheral wall, the motor being configured for driving the impelling member, and the output shaft driving an arrangement of driving magnetic elements that cooperate magnetically with the arrangement of driven magnetic elements to drive the impeller in rotation;
one driven magnetic element of the arrangement of driven magnetic elements is positioned to:
generally face a first driving magnetic element of the arrangement of driving magnetic elements in a generally attraction orientation relative to the one driven magnetic element, the first driving magnetic element driving the one driven magnetic element in rotation;
and
be off-set relative to a second driving magnetic element of the arrangement of driving magnetic elements in a generally repulsion orientation relative to the one driven magnetic element, the driving second magnetic element driving the one driven magnetic element in rotation;
wherein the impelling member is spaced above the bottom of the cavity between:
a maximum stirring distance when the impelling member is rotated at a maximum stirring level at a maximum stirring speed about the impeller axis;
and
a resting distance when the impelling member stands still at a resting level,
the maximum stirring distance being greater than the resting distance.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/461,894Filed 11 Dec 2017
Priority: EP 1620374913 Dec 2016
Published: US 2019/0328167 A131 Oct 2019
Granted: 28 Dec 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A47J 27/004
Cooking-vessels: with integral electrical heating means
A47J 43/0465
With tools driven from the bottom side: with magnetic drive
A23V 2002/00
Food compositions, function of food ingredients or processes for food or foodstuffs
A47J 43/0722
For machines with tools driven from the lower side: mixing, whipping or cutting tools