WO2015106762A1 - Chauffage par induction et dispositif de mélange - Google Patents

Chauffage par induction et dispositif de mélange Download PDF

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Publication number
WO2015106762A1
WO2015106762A1 PCT/DK2014/050009 DK2014050009W WO2015106762A1 WO 2015106762 A1 WO2015106762 A1 WO 2015106762A1 DK 2014050009 W DK2014050009 W DK 2014050009W WO 2015106762 A1 WO2015106762 A1 WO 2015106762A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic field
stirring device
receptacle
induction heating
Prior art date
Application number
PCT/DK2014/050009
Other languages
English (en)
Inventor
Allan Ivo Søgaard SØRENSEN
Flemming Buus Bendixen
Carsten MIKKELSEN
Peter Kjeldsteen
Original Assignee
Grundfos Holding A/S
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 Grundfos Holding A/S filed Critical Grundfos Holding A/S
Priority to PCT/DK2014/050009 priority Critical patent/WO2015106762A1/fr
Publication of WO2015106762A1 publication Critical patent/WO2015106762A1/fr

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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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • 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
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/046—Machines 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
    • A47J43/0465—Machines 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
    • B01F33/452—Magnetic mixers; Mixers with magnetically driven stirrers using independent floating stirring elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2207—Use of data, i.e. barcodes, 3D codes or similar type of tagging information, as instruction or identification codes for controlling the computer programs, e.g. for manipulation, handling, production or compounding in mixing plants
    • 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
    • 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
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/109—Induction heating apparatus, other than furnaces, for specific applications using a susceptor using magnets rotating with respect to a susceptor

Definitions

  • the present invention relates to an induction heating apparatus with combined heating and stirring of a fluid in a receptacle.
  • Induction cooking stoves has been known for a long time, and has become more or less the standard in modern cooking. It reacts fast, similar to the response of gas and works with glass-ceramic surface plate.
  • Induction cookers constitute a major domestic application of the induction- heating phenomena.
  • the desired heating is done in metallic vessels by varying the magnetic field, which in turn is generated by a planar coil fed by a power electronics inverter.
  • a domestic induction arrangement consists of a planar multi-turn winding situated below a metallic vessel and supplied by a medium-frequency power source, normally operated between 20 and 100 kHz.
  • an induction heating apparatus for heating a fluid in a receptacle, comprising:
  • a first magnetic field being arranged adjacent to the receptacle, the first magnetic field being arranged to rotate around a stirring axis with an adjustable frequency, said first magnetic field creates a magnetic torque capable of rotating a magnetic stirring device in the receptacle and,
  • the second magnetic field having a frequency and amplitude arranged for magnetic induction heat to be induced in the magnetic stirring device, the magnetic stirring device arranged to rotate the fluid in the receptacle.
  • the invention is particularly, but not exclusively, advantageous because it provides a combined heating and stirring of the fluid in a receptacle, traditional heating for cooking is performed by heating the bottom of the pot or receptacle, causing a high temperature gradient in vertical direction up through the fluid in the receptacle.
  • the present invention provides a system that will heat the fluid in the receptacle, but not directly the receptacle.
  • the invention is also advantageous as the material of the receptacle is not limited to traditional cooking ware suitable for induction cooking. In fact any kind of material which is permeable for the magnetic field can be used, i .e. materials such as plastic, wood, ceramics, glass, but also metal can be used.
  • first and second magnetic field is provided from the same source, wherein the first magnetic field is the fundamental signal and the second magnetic field is an overlaying high frequency signal.
  • the induction heating apparatus further comprises a motor arranged to provide rotation of a magnetic circuit for thereby producing the rotation of the first magnetic field.
  • An advantage of this embodiment is that the rotation of the magnetic circuit needed for providing the magnetic field for the stirring is provided by a simple and reliable source, namely a motor, the motor is in an
  • embodiment an electrical motor.
  • the first magnetic field is provided by at least one electromagnet with an oscillating magnetic field, wherein the oscillating magnetic field causes the magnetic stirring device to rotate.
  • An advantage of this embodiment is that the magnetic field is generated with a rotation without having to provide mechanical rotating elements other than in the receptacle.
  • the stirring device is attached to a mixing device arranged to fit into the receptacle, wherein the mixing device provides mixing of the fluid in the receptacle.
  • An advantage of this embodiment is that an improved mixing or stirring is provided by the mixing device, while the magnetic stirring device can be designed in a magnetic optimal way, without having to consider its stirring and mixing performance as well.
  • a control unit is arranged to detect if the magnetic stirring device rotates with an expected angular speed, and thereby controlling the angular speed of the first magnetic field.
  • An advantage of this embodiment is that it controls the angular speed, which can be implemented among others, by increasing the first magnetic field or by use of field weakening, the actual speed is controlled by changing the frequency of the first magnetic field.
  • the angular speed can of course be controlled by controlling the mechanical rotation.
  • the mechanical rotation can be provided by an electrical motor or other means known to the skilled person.
  • the apparatus is further arranged to detect a temperature of the fluid passing by the magnetic stirring device.
  • An advantage of this embodiment is that the apparatus can monitor the temperature of the fluid.
  • the temperature is detected based on a resistivity in the magnetic stirring device.
  • An advantage of this embodiment is that it uses a simple method to monitor the temperature, and thus a cheap and reliable temperature sensor is inherently incorporated in the magnetic stirring device, and therefore no specific power source is needed.
  • a temperature sensor is installed in the magnetic stirring device.
  • An advantage of this embodiment is that it provides a more accurate temperature sensor.
  • the temperature sensor is power by an amount of energy harvested from the second magnetic field.
  • An advantage of this embodiment is that the temperature sensor can function without use of batteries, and thereby need for changing batteries.
  • the second magnetic field is controlled by the control unit according to the temperature of the fluid in the receptacle.
  • An advantage of this embodiment is that a closed loop feedback system is provided and better cooking can be performed. It also allows cooking where a predetermined temperature can be reached and maintained. E.g. for chocolate tempering it is important to keep the temperature within a narrow interval, such as 30 to 35 degrees Celsius.
  • the receptacle further comprises a lid and the receptacle is arranged to operate under a pressure different from a surrounding atmospheric pressure.
  • the advantage of this embodiment is that in a traditional pressure cooker or in a vacuum cooker, stirring is not possible as the receptacle is enclosed with a lid; due to the changed pressure access is restricted.
  • the present invention relates to a magnetic stirring device, made of materials arranged to receive a first magnetic field and a second magnetic field, said first magnetic field causes the magnetic stirring device to follow a change in the first magnetic field, and the second magnetic field heats up the magnetic stirring device, due to an induction current.
  • the magnetic stirring device provides heating and stirring of a fluid in a receptacle.
  • the magnetic stirring device is having a first part made of an electrical conductive material, such as stainless steel, and having a second part made of a ferrite or a soft magnetic composite.
  • the advantage of this embodiment is that a better heating stirring of the magnetic stirring device is obtained.
  • the core of the magnetic stirring device is having more than two magnetic poles.
  • the advantage of this embodiment is that a lower magnetic torque has to be provided in order to get the needed stirring torque.
  • a stirring device with more than two magnetic poles is also more likely to have a shape that provides a better stirring.
  • the stirring device is an elongated cylinder shaped object, symmetrical shaped object or
  • the stirring device further comprises a bearing system to ensure low friction rotation in a receptacle.
  • the advantage of this embodiment is that the first magnetic field will produce a magnetic force which attracts the stirring device in the direction of the source of the first magnetic field. If the first magnetic field is located below the receptacle, the stirring device will be pull to the bottom of the receptacle. Thus a bearing system or a low friction between the receptacle and the stirring device is desired.
  • the stirring device can be made with a surface having a low friction and/or non-stick surface.
  • the present invention relates to a method for heating and stirring of a fluid in a receptacle, wherein the method comprises:
  • the second magnetic field having a frequency and amplitude for inducing a magnetic induction heat in the magnetic stirring device, and thereby heating the fluid in the receptacle.
  • the first, second and third aspect of the present invention may each be combined with any of the other aspects.
  • Figure 1 shows a schematic of an embodiment of the invention
  • Figure 2 shows an example of the invention with a motor for rotation
  • Figure 3 shows an example of the invention with a magnetic coil system for rotation
  • Figure 4 shows magnetic simulations of the second magnetic field
  • Figure 5 shows magnetic simulations of the first magnetic field
  • Figure 6 shows an example of the stirring device
  • Figure 7 shows a stirring device with four magnetic poles
  • Figure 8 shows an electromagnetic arrangement for the low frequency stirring signal
  • Figure 9 shows an example of a stirring device with a bearing arrangement
  • Figure 10 shows a flow diagram according to a method of the invention.
  • the system works with two magnetic fields: 1. First magnetic field oscillating with a low frequency rotating field, for angular rotation of a rotating magnetic object, i.e. a stirring device,
  • FIG. 1 shows a schematic of the embodiment.
  • a high frequency induction coil 110 is used for generating the second magnetic field.
  • the first magnetic field s generated by a magnetic circuit 120, which rotates around an axis 105.
  • the magnetic circuit 120 comprises a permanent magnet part 122, made of a ferrite material with high resistivity; the magnetic flux from the permanent magnet is guided through two flux concentrators 121, located on each end sides of the permanent magnet 122.
  • the first and second magnetic fields are arranged so they can couple magnetically with a rotating magnetic object 130.
  • the first magnetic field rotates around the axis 105 and the rotating magnetic object 130 will follow the first magnetic field.
  • the second magnetic field will be induced in the rotating magnetic object 130 and create thermal heat because of losses in the rotating magnetic object 130.
  • the actual design of the magnetic circuit 120 may depend on the
  • the rotating magnetic object 130 is an elongated object which can be made in many different shapes.
  • the rotating magnetic object 130 i.e. the stirring device 130 can be designed so it is easy to clean after use, it can be made with a surface having a low friction and/or non-stick surface.
  • it has an outer jacket made of stainless steel, which is a good material for use in connection with food products.
  • FIG. 2 shows an embodiment of the invention .
  • the high frequency induction coil 110 used for generating the second magnetic field is located under a plate 140, which can be a glass ceramic stove top or a kitchen counter surface or others. The thickness of the plate 140 will of course have an effect on the magnetic field.
  • the high frequency induction coil 110 is in an embodiment a disc shaped coil, known to the skilled person from traditional induction cooking stoves.
  • the first magnetic field is generated by a magnetic circuit 120, which is rotated by a motor 128.
  • the motor 128 is supplied with power through a power line 163 and controlled via a communication link 162.
  • Both the power and the control is offered by a control unit 160, the control unit is connected through a supply link 164 to a power supply box 170.
  • the control unit 160 controls and supply the induction coil 110 through an induction coil link 161.
  • the power supply box 170 and the control unit 160 is integrated in one unit.
  • a receptacle 150 On top of the surface 140 is a receptacle 150, the receptacle is partly filled with a fluid 157.
  • the receptacle has an optional lid 151, the lid can be used in some embodiments.
  • the stirring device 130 Attached to the stirring device 130 is an optional mixer fan 135, the mixer fan is not required, but can in some applications improve the stirring or mixing of the fluid in the receptacle 150.
  • the actual design of the mixer fan 135 depends on the fluid and the purpose, but this is known from other technical fields.
  • the first and second magnetic fields are arranged so they can couple magnetically with a rotating magnetic object 130.
  • the first magnetic field rotates around the axis 105 and the rotating magnetic object 130 will follow the first magnetic field.
  • the second magnetic field will be induced in the rotating magnetic object 130 and create thermal heat because of losses in the rotating magnetic object 130.
  • the receptacle 150 used together with the induction heating apparatus 100 and the stirring device 130 has to be made of a material with a minimal interference of the magnetic fields, i.e. low magnetic permeability.
  • the receptacle 150 can be made of glass, ceramic, polymers or other materials with low relative permeability.
  • the induction coil 110 will still work as a traditional induction stove and will induce the magnetic field in the soft iron plate in the cooking wear, it is unlikely that the rotating magnetic object 130 will rotate as the first magnetic field will be short circuited in the soft iron plate.
  • the first magnetic field will produce a magnetic force which attracts the stirring device 130 in the direction of the source 110 of the first magnetic field. If the first magnetic field is located below the receptacle 150, the stirring device 130 will be pulled by the magnetic force to the bottom of the receptacle 150.
  • the torque producing magnet 120 is driven by a motor 128 to provide rotation of the magnetic circuit 120.
  • FIG 3 shows an embodiment of the invention similar to the one of Figure 2.
  • the high frequency induction coil 110 used for generating the second magnetic field is located under a plate 140, which can be a glass ceramic stove top or a kitchen counter surface or others.
  • the first magnetic field is generated by a magnetic circuit 120, but here the magnetic field is produced by an electromagnet 125.
  • the electromagnet 125 is supplied 163 and controlled 162 by a control unit 160, the control unit is supplied 164 from a power supply box 170.
  • the control unit 160 as controls and supply 161 the induction coil 110.
  • the material of the receptacle is not limited to traditional cooking ware suitable for induction cooking, such as soft magnetic iron.
  • any kind of material which is permeable for the magnetic field can be used, i.e. materials such as plastic, wood, ceramics, glass, but also metal can be used.
  • a traditional cooking ware receptacle suitable for induction cooking, it will still function for heating as the soft magnetic plate in the receptacle will be heated by the second magnetic field.
  • the stirring function is not likely to function as the first magnetic field absorbed by the soft magnetic plate in the receptacle.
  • Figure 4 shows a magnetic flux simulation for the second magnetic field projected onto a 2D surface 400.
  • the second magnetic field is generated by the induction coil 110, and high magnetic level is shown where the induction coil 110 penetrates the 2D surface 400, whereas the magnetic circuit 120 in this simulation is inactive and thus shows little or nearly no magnetic activity on the 2D surface 400 at the intersection 402.
  • the rotating magnetic object 130 shows high magnetic level on the 2D surface 400 in the area 401.
  • the area 401 extents all the way to the edge of the rotating magnetic object 130.
  • Figure 5 shows a magnetic flux simulation for the first magnetic field projected onto a 2D surface 500.
  • the induction coil 110 is inactive, and the magnetic circuit 120 in active. This clearly shows on the darker area 502 on the 2D surface 500.
  • the stirring device is made with two types of material an electrical conductive material, such as stainless steel, copper or others and a ferrite or a soft magnetic composite, the electrical conductive material conducts a current caused by the induction of the second magnetic field, this current results in a heating of the electrical conductive material, the ferrite conducts the first magnetic field and align with the field, thus the stirring device will rotate as the first magnetic field rotates.
  • an electrical conductive material such as stainless steel, copper or others and a ferrite or a soft magnetic composite
  • the stirring device can consist of an outer jacket 131 and inner core 132.
  • the outer material 131 is an electrical conductive material such as stainless steel .
  • the core 132 material is preferably made of a ferrite or of a soft magnetic composite.
  • the stirring device can in an embodiment be designed with two magnetic poles, and other embodiment with, 4, 6, 8 poles etc.
  • Figure 7 shows an embodiment of the rotating magnetic object 130 with four magnetic poles.
  • the first and second magnetic field is provided from the same source, wherein the first magnetic field is the fundamental signal and the second magnetic field is an overlaying high frequency signal .
  • the first magnetic field is produced along the sides of the receptacles (not shown in a Figure), thus the stirring device 130 is not drawn to the bottom of the receptacle due to the magnetic field, but instead the first magnetic field can in fact better control the position of the stirring device, both regard to the side ways direction but also regarding the issue of keeping the stirring device of the bottom of the receptacle.
  • the torque required is for a normal cooking pot/ receptacle expected to be less than 1 Nm.
  • the stirring device is cylinder shaped object, in another it is symmetrical but not a cylinder, and another it is an asymmetrical shape.
  • the magnetic object is attached to a mixing device 135 arranged to fit into a container, wherein the mixing device provides improved mixing of a fluid or substance in the container.
  • the mixing device can have shape like a propeller or a blender, shapes considered as general common knowledge.
  • the mixing device is arranged to provide a lift for the stirring device and the mixing device, so even with the first magnetic field located under the bottom of the receptacle, the mixing device produces a lifting force working opposite of the resulting magnetic force of the first and second magnetic field.
  • the system is arranged to detect if the rotating magnetic object rotates with the expected angular speed, and thereby the control unit 160 adjusts the angular speed of the external magnetic field or adjust the amplitude of the magnetic field. The amplitude can be adjusted in different ways, either simply by regulating the current supplied to the electro magnet producing the field or by providing field weakening.
  • control 160 of the angular rotation is implemented with a system, where use of the back EMF (electromagnetic force) gives the feedback.
  • the back EMF is an electromagnetic force appearing in an inductive circuit in such a direction as to oppose any change of current in the circuit.
  • Methods to actually control the angular speed can be among others by increasing the first magnetic field or by using field weakening.
  • the angular speed can of course be controlled by controlling the mechanical rotation.
  • the mechanical rotation can be provided by an electrical motor or other means known to the skilled person.
  • the system can detect temperature of the fluid or substance passing by the rotating magnetic object 130.
  • Figure 6b shows that in an embodiment a temperature sensor 136 can be embedded in the stirring device. Furthermore Figure 6b also show how an RFID tag 137 can be embedded in the stirring device.
  • the temperature is detected based on a resistivity in the magnetic stirring device.
  • the actual temperature can be measured with an accuracy of +/- a few degrees.
  • the magnetic stirring device 130 is provided with a code, which identifies resistivity vs. temperature curve, such a code can be a simple number code or in a more advanced implementation it can be coded in a RFID tag 137, which can be read by an electronic scanner module in the cooking apparatus.
  • a temperature sensor 136 is installed in the rotating magnetic object 130, and in an embodiment the temperature sensor 136 is power by energy harvested from the high frequency magnetic field.
  • the most common used way to harvest energy is by using a temperature difference; such a temperature difference is not present in this application, as the magnetic stirring device 130 is circulating in the fluid, and thus both the fluid 157 and the magnetic stirring device 130 has the same temperature.
  • the induction heating apparatus allows cooking where a predetermined temperature can be reached and maintained. E.g. for chocolate tempering it is important to keep the temperature within a narrow interval, such as 30 to 35 degrees Celsius.
  • Another application can be for maintaining temperature of food such as sauces or soups where a certain temperature is desired over a longer period of time, normally this will require manual stirring to avoid the surface of the sauce to produce a "skin".
  • the present invention allows heating and stirring at the same time.
  • the induction heating apparatus has a receptacle with a lid, where the receptacle is arranged to operate under a pressure different from a surrounding atmospheric pressure.
  • FIG 8 shows an embodiment with a layout of the magnetic circuits where the induction coil 110 is located in the same plane or nearly the same plane as three magnetic coils 221, 222 and 223 which will produce an oscillating magnetic field used as the first magnetic field.
  • the coils 221, 222, 223 are connected through connection wires such as 225A.
  • Each coil 221, 222, and 223 has two wire terminals 225A.
  • the induction coil also has to terminal 111. The terminals are connected to the control unit 160.
  • the induction heating field (second field) is supplied from the coils 221, 222, 223, with an overlaying high frequency component in the signal supplied to the coils 221, 222, 223.
  • Figure 9 shows an embodiment of the stirring device 130 with a bearing arrangement 901a, 901b to ensure low friction rotation.
  • the first magnetic field is produced along the sides of the receptacles, thus the stirring device is not drawn to the bottom of the receptacle, but instead the first magnetic field can in fact better control the position of the stirring device, both regard to the side ways direction but also regarding the issue of keeping the stirring device of the bottom of the receptacle.
  • Figure 10 shows a flow chart of a method for heating and stirring of a fluid (157) in a receptacle (150, where step 1000 is placing a magnetic stirring device (130) in the receptacle, step 1010 is providing a first magnetic field adjacent to the receptacle (150), said first magnetic field rotates around a stirring axis (105), with an adjustable frequency capable of rotating the magnetic stirring device (130) in the receptacle (150), and step 1020is providing a second magnetic field adjacent to the receptacle (150), the second magnetic field having a frequency and amplitude for inducing a magnetic induction heat in the magnetic stirring device (130), and thereby heating the fluid (157) in the receptacle (150).
  • the invention relates to, an induction heating apparatus (100), for heating a fluid (157) in a receptacle (150), the induction heating apparatus comprising, a first magnetic field, being arranged adjacent to the receptacle (150), the first magnetic field being arranged to rotate around a stirring axis (105) with an adjustable frequency, said first magnetic field creates a magnetic torque capable of rotating a magnetic stirring device (130) in the receptacle (150) and a second magnetic field for inductive heating, the second magnetic field having a frequency and amplitude arranged for magnetic induction heat to be induced in the magnetic stirring device (130), the magnetic stirring device arranged to rotate the fluid in the receptacle.
  • the present invention also relates to a method heating and stirring a fluid in a receptacle with a magnetic stirring device.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • General Induction Heating (AREA)

Abstract

La présente invention concerne un appareil (100) de chauffage par induction afin de chauffer un fluide (157) dans un réceptacle (150). L'appareil de chauffage par induction comprend un premier champ magnétique, agencé adjacent au réceptacle (150), le premier champ magnétique étant agencé pour tourner autour d'un axe de mélange (105) à une fréquence réglable, le premier champ magnétique créant un couple magnétique capable de faire tourner un dispositif (130) de mélange magnétique dans le réceptacle (150) et un second champ magnétique pour un chauffage inductif, le second champ magnétique ayant une fréquence et une amplitude agencées pour que le chauffage par induction magnétique soit induit dans le dispositif (130) de mélange magnétique, le dispositif de mélange magnétique étant agencé pour faire tourner le fluide dans le réceptacle. L'invention concerne également un procédé de chauffage et de mélange d'un fluide dans un réceptacle avec un dispositif de mélange magnétique.
PCT/DK2014/050009 2014-01-17 2014-01-17 Chauffage par induction et dispositif de mélange WO2015106762A1 (fr)

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PCT/DK2014/050009 WO2015106762A1 (fr) 2014-01-17 2014-01-17 Chauffage par induction et dispositif de mélange

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PCT/DK2014/050009 WO2015106762A1 (fr) 2014-01-17 2014-01-17 Chauffage par induction et dispositif de mélange

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108114653A (zh) * 2018-01-05 2018-06-05 中冶建筑研究总院有限公司 一种用于磁力搅拌的搅拌转子
WO2019226831A1 (fr) * 2018-05-22 2019-11-28 Gate Scientific, Inc. Détection sans fil de propriétés d'un environnement fermé et dispositifs associés
WO2020081521A1 (fr) * 2018-10-15 2020-04-23 Vita-Mix Management Corporation Chauffage inductif intégré à un récipient pour un mélangeur
EP3685718A1 (fr) * 2019-01-24 2020-07-29 Millo Appliances, UAB Système de mélange de produits alimentaires integré dans le plan de travail
EP3973832A1 (fr) 2020-09-28 2022-03-30 Koninklijke Philips N.V. Appareil et procédé à utiliser avec le chauffage par induction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB321006A (en) * 1928-09-10 1929-10-31 Drysdale & Co Ltd Improvements in electrical heating and mixing apparatus
JPS5973034A (ja) * 1982-10-16 1984-04-25 Yamato Scient Co Ltd マグネテイクスタ−ラ
EP0204467A2 (fr) * 1985-05-29 1986-12-10 Electricity Association Services Limited Appareil pour chauffer et mélanger un fluide
WO2004105061A1 (fr) * 2003-05-23 2004-12-02 Glaxo Group Limited Systeme d'apport d'energie
WO2006121838A2 (fr) * 2005-05-06 2006-11-16 Applera Corporation Dispositif comprenant une zone de retention de fluides chauffable par induction et procede associe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB321006A (en) * 1928-09-10 1929-10-31 Drysdale & Co Ltd Improvements in electrical heating and mixing apparatus
JPS5973034A (ja) * 1982-10-16 1984-04-25 Yamato Scient Co Ltd マグネテイクスタ−ラ
EP0204467A2 (fr) * 1985-05-29 1986-12-10 Electricity Association Services Limited Appareil pour chauffer et mélanger un fluide
WO2004105061A1 (fr) * 2003-05-23 2004-12-02 Glaxo Group Limited Systeme d'apport d'energie
WO2006121838A2 (fr) * 2005-05-06 2006-11-16 Applera Corporation Dispositif comprenant une zone de retention de fluides chauffable par induction et procede associe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ACERO: "Domestic induction appliances", IEEE INDUSTRY APPLICATION MAGAZINE, March 2010 (2010-03-01)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108114653A (zh) * 2018-01-05 2018-06-05 中冶建筑研究总院有限公司 一种用于磁力搅拌的搅拌转子
WO2019226831A1 (fr) * 2018-05-22 2019-11-28 Gate Scientific, Inc. Détection sans fil de propriétés d'un environnement fermé et dispositifs associés
WO2020081521A1 (fr) * 2018-10-15 2020-04-23 Vita-Mix Management Corporation Chauffage inductif intégré à un récipient pour un mélangeur
EP3685718A1 (fr) * 2019-01-24 2020-07-29 Millo Appliances, UAB Système de mélange de produits alimentaires integré dans le plan de travail
EP3973832A1 (fr) 2020-09-28 2022-03-30 Koninklijke Philips N.V. Appareil et procédé à utiliser avec le chauffage par induction
WO2022064076A1 (fr) 2020-09-28 2022-03-31 Koninklijke Philips N.V. Appareil et procédé destinés à être utilisés avec un chauffage par induction

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