CN113329535A - Electromagnetic heating device and control method - Google Patents

Abstract

The invention provides an electromagnetic heating device and a control method, and belongs to the technical field of electromagnetic heating. Electromagnetic heating device includes electromagnetism stove body, controller, vortex generator and induction coil, and is a plurality of vortex generator's input respectively with the controller electricity is connected, and is a plurality of vortex generator's output respectively with a plurality of induction coil electricity is connected, and is a plurality of induction coil set up in this internal, and a plurality of induction coil is annular evenly distributed, induction coil is suitable for and generates heat under the circular telegram, the controller is suitable for the control different positions induction coil or different quantity induction coil circular telegram generates heat. The effect of non-contact intelligent stirring is realized by adopting a heat flow method.

Description

Electromagnetic heating device and control method

Technical Field

The invention relates to the technical field of electromagnetic heating, in particular to an electromagnetic heating device and a control method.

Background

In recent years, induction cookers have become very popular as cooking devices that are safe, practical, energy-saving, and environmentally friendly. The electromagnetism stove passes through the electromagnetic induction principle, utilizes alternating current to pass through the coil and produces alternating magnetic field, makes the inside vortex current that produces of conductor in the magnetic field, and the joule effect of vortex current can make the conductor temperature rise to realize the heating. Because most products in the market use single coil to heat on whole pot bottom dish, the heating methods is single, and leads to the heating region to concentrate relatively in the bottom easily, and then causes the phenomenon that the interior material of pot is burnt pot bottom easily.

Disclosure of Invention

The invention aims to solve the problem of single heating mode of the traditional induction heating product.

In order to solve the above problems, the present invention provides an electromagnetic heating device, including an electromagnetic oven body, a controller, a plurality of vortex generators, and induction coils, wherein input ends of the plurality of vortex generators are respectively electrically connected to the controller, output ends of the plurality of vortex generators are respectively electrically connected to the plurality of induction coils, the plurality of induction coils are disposed in the electromagnetic oven body, and the plurality of induction coils are uniformly distributed in an annular shape, the induction coils are adapted to generate heat when energized, and the controller is adapted to control the induction coils at different positions or/and different numbers of induction coils to be energized to generate heat.

Compared with the prior art, the electromagnetic heating device provided by the invention has the following technical effects:

through being the annular distribution with a plurality of induction coil this internally at the electromagnetism stove, so can generate heat through the induction coil circular telegram of controlling different positions, and then can realize the zone heating, for example, can place the small-size pot (the diameter of this small-size pot is close with every induction coil's diameter) on the electromagnetism stove body, when heating small-size pot, make induction coil circular telegram heating under according to the position of small-size pot on the electromagnetism stove body, do not exist the small-size pot to all the other induction coil tops the keep the outage can, when realizing the zone heating, also can save the electric energy, the heating methods are various.

Further, a relay is arranged between each vortex generator and the controller, and the relay is controlled by the controller to enable the vortex generators to be powered off or powered on.

Further, the controller is connected with the relay through a control cable, and the relay is connected with the vortex generator through a power cable.

Furthermore, the number of the induction coils is even and is not less than four.

In addition, the invention also provides a control method of electromagnetic heating, based on the electromagnetic heating device, comprising the following steps:

when the pot body is arranged on the induction cooker body of the electromagnetic heating device, the induction coils at different positions or/and different numbers of induction coils are controlled to be electrified and heated so as to heat materials in the pot body.

Further, the controlling the induction coils at different positions or/and different numbers of induction coils to generate heat by electrifying comprises:

forward heating mode: and controlling the plurality of induction coils to be sequentially electrified for a second preset time in the clockwise direction.

Further, the controlling the plurality of induction coils to be sequentially electrified in the clockwise direction for a second preset time period includes: and in the clockwise direction, controlling the plurality of induction coils to be sequentially electrified and work for a second preset time length, wherein after the previous induction coil is electrified for the first preset time length, the next induction coil starts to be electrified and work, and the first preset time is shorter than the second preset time length.

Further, the controlling the induction coils at different positions or/and the induction coils at different numbers to generate heat by energization further comprises:

before the forward heating mode is operated, the induction coils are controlled to be electrified and work at the same time, so that the material in the pot body is uniformly heated.

Further, the controlling the induction coils at different positions or/and the induction coils at different numbers to generate heat by energization further comprises:

reverse heating mode: controlling the plurality of induction coils to be sequentially electrified in the anticlockwise direction for a second preset time;

and controlling the forward heating mode and the reverse heating mode to operate alternately.

Further, the number of the induction coils is even and is not less than four, and the controlling the induction coils at different positions or/and the induction coils with different numbers to generate heat by electrifying further comprises:

opposite side oscillating heating mode: one half of the induction coils and the other half of the induction coils are sequentially and alternately electrified to work for a third preset time, wherein one half of the induction coils and the other half of the induction coils are symmetrically arranged in the induction cooker body;

and controlling the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode to sequentially and circularly operate.

Compared with the prior art, the electromagnetic heating control method provided by the invention has the following technical effects:

the large-scale pot body (the diameter is not smaller than the diameter of a circle where the induction coils are located) can be placed on the induction cooker body, the controller can control the induction coils to be sequentially switched on and off, the induction coils at different positions are controlled to be switched on, heat is generated at different positions, namely, the movement of a heat source of an imaginary object is realized through the change of the heat generation position, when liquid above the controlled induction coils is heated, the properties (density and the like) of the heated part of the fluid are changed, so that the heated part of the fluid starts to rise in the whole medium, when the fluid reaches the top of the medium, the fluid can continuously flow due to the fact that no vertical distance exists, the part of the fluid starts to transversely flow to the side surface and is diffused outwards, and when the heat is transferred to the air, the part of the medium cools and sinks again to form a circular. The heat source is moved by changing the power-on state of the induction coil, the convection current in the horizontal direction is mixed or contracted according to the direction of the heat source, the generated motion follows the motion of the heat source in the pot, and the fluid circulates in a stirring mode to achieve the aim of non-contact stirring. The invention adopts a heat flowing method, achieves the purpose of contactless intelligent stirring, prevents the material from pasting the bottom of the pan, avoids the defects of easy abrasion, large occupied space and the like of a mechanical stirrer, prolongs the service life of the pan body and improves the space utilization rate.

Drawings

Fig. 1 is a schematic structural view of an electromagnetic heating apparatus of an embodiment of the present invention;

FIG. 2 is a schematic top view of an electromagnetic heating apparatus of an embodiment of the present invention;

fig. 3 is a schematic illustration of the heating liquid flow principle of an embodiment of the present invention;

fig. 4 is a schematic flowchart of an electromagnetic heating control method according to an embodiment of the present invention.

Description of the labeling:

1-a controller, 2-a control cable, 3-a power cable, 4-a power supply, 41-a first power supply, 42-a second power supply, 5-a pot body, 6-a vortex generator, 61-a first vortex generator, 62-a second vortex generator, 63-a third vortex generator, 64-a fourth vortex generator, 65-a fifth vortex generator, 66-a sixth vortex generator, 7-a relay and 8-an induction coil.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The phenomenon that the bottom of a pot is easily burnt when a traditional induction cooker is heated is generally solved by using an external stirring device to ensure the pot for mixing food and prevent the food from being gelatinized due to overheating under the unattended condition. However, most of these designs are expensive and take up much space, since they require an additional device to be mounted on the edge of the pan and to ensure adequate contact between the stirring means and the stirring medium, the limited space in the kitchen of small apartments is not suitable for use, and the presence of mechanical structures also reduces the overall stability and durability of the device. In addition, since it is necessary that the object to be heated is in direct contact with the stirring rod, it cannot be applied to a material to be heated which is required for non-contact stirring and mixing in, for example, chemical industry, pharmaceutical field, and the like.

In addition, the traditional induction cooker only has a basic heating function, and the heating mode is single, for example, when the cooker bodies with different sizes are heated, the heating area is fixed, the size of the heating area is fixed, and a large amount of electric energy is wasted. Although induction heating products at home and abroad already have part of markets, induction cookers appearing in the markets can only realize power adjustment and cannot realize zone temperature control. Moreover, the fresh product can realize non-contact heating and stirring on the technical layer, so that the contact between the stirring device and the stirring medium is avoided. Induction heaters for industrial use are also of little concern for non-contact stirring. Therefore, in combination with the prior art investigations, there is still a lack in the market of a device for "intelligent" stirring of the materials in the pan in a non-contact manner by selective heating.

Based on the above problems, referring to fig. 1 and fig. 2, an embodiment of the present invention provides an electromagnetic heating device, including an induction cooker body, a controller 1, vortex generators 6, and induction coils 8, wherein input ends of a plurality of vortex generators 6 are respectively electrically connected to the controller 1, output ends of a plurality of vortex generators 6 are respectively electrically connected to a plurality of induction coils 8, the plurality of induction coils 8 are disposed at a lower side of the cooker body 5, and the plurality of induction coils 8 are uniformly distributed in an annular shape, the induction coils 8 are adapted to generate heat when energized, and the controller 1 is adapted to control the induction coils 8 at different positions or/and the induction coils 8 in different numbers to be energized to generate heat.

Here, through being the annular distribution with a plurality of induction coil 8 in the electromagnetism stove body, so can generate heat through the 8 circular telegrams of induction coil of control different positions, and then can realize the zone heating, for example, can place the small-size pot (the diameter of this small-size pot is close with every induction coil 8's diameter) on the electromagnetism stove body, when heating the small-size pot, make induction coil 8 circular telegram heating under according to the position of small-size pot on the electromagnetism stove body, do not keep the outage when there is not the small-size pot above all the other induction coil 8, when realizing the zone heating, also can save the electric energy, the heating mode is various.

Optionally, a relay 7 is disposed between each of the vortex generators 6 and the controller 1, and the relay 7 is controlled by the controller 1 to de-energize or energize the vortex generators 6.

Here, the relay 7 is an electronic control device, which has a control system (also called an input circuit) and a controlled system (also called an output circuit), and is applied to a circuit between the vortex generator and the controller, and is an "automatic switch" that controls a large current with a small current, and then the relay 7 is controlled by the controller 1, so that the vortex generator 6 is powered on and off.

Optionally, the controller 1 is connected to the relay 7 through a control cable 2, and the relay 7 is connected to the vortex generator 6 through a power cable 3.

Here, the power cable 3 or power cable is a cable for transmitting electric energy, the power cable 3 transmits persistent current to provide electric energy for the electric equipment, so that the relay 7 is connected with the vortex generator 6 through the power cable 3, the relay 7 and the vortex generator 6 can be powered by the power source 4, that is, the power source 4 is sequentially connected with the relay 7 and the vortex generator 6 through the power cable 3. And control cable 2 is the cable of various control signal of transmission, control cable 2 transmits interstitial electric current, provide the signal of telecommunication for consumer, consequently controller 1 is connected with relay 7 through control cable 2, when controller 1 control relay 7 disconnection, the electric current in power 4 can't be through passing through relay 7, and then vortex generator 6 cuts off the power supply, and then induction coil 8 also cuts off the power supply, when controller 1 control relay 7 switches on, the electric current in power 4 can pass through relay 7 transmission vortex generator 6 and induction coil 8.

Optionally, the number of the induction coils 8 is even and is not less than four.

Here, by setting the number of the induction coils 8 to be an even number, and not less than four, for example, six vortex generators 6 and six induction coils 8 are provided, the six vortex generators 6 are respectively a first vortex generator 61, a second vortex generator 62, a third vortex generator 63, a fourth vortex generator 64, a fifth vortex generator 65, and a sixth vortex generator 66, the front end of the first vortex generator 61 is connected to the first induction coil, the front end of the second vortex generator 62 is connected to the second induction coil, the front end of the third vortex generator 63 is connected to the third induction coil, the front end of the fourth vortex generator 64 is connected to the fourth induction coil, the front end of the fifth vortex generator 65 is connected to the fifth induction coil, the front end of the sixth vortex generator 66 is connected to the sixth induction coil, the power source 4 may be provided with two, respectively, the first power source 41 and the second power source 42, a first power source 41 powers three vortex generators and a second power source 42 powers the other three vortex generators. Therefore, various heating modes (or heating modes) can be realized, and further, the non-contact stirring mode is more diversified.

In addition, another embodiment of the present invention further provides a method for controlling electromagnetic heating, using the electromagnetic heating apparatus described above, including:

when the pot body 5 is arranged on the electromagnetic oven body of the electromagnetic heating device, the induction coils 8 at different positions or/and the induction coils 8 with different quantities are controlled to be electrified and heated so as to heat the pot body 5.

Here, arrange the pot body 5 in on the electromagnetism stove body, and then heat the pot body through electromagnetic heating device, preferably, make the center of the pot body 5 is with a plurality of the circle at induction coil 8 place is concentric, so, when guaranteeing to heat the pot body 5, each induction coil 8 evenly distributed is in pot body below and be located the inboard at pot body edge, makes every induction coil 8 all can heat the pot body, and the regional size of heating the pot body is unanimous.

Here, a large-sized pan body 5 (the diameter is not smaller than the diameter of the circle where the plurality of induction coils 8 are located) can be placed on the induction cooker body, the controller 1 can control the plurality of induction coils 8 to be sequentially powered on and powered off, so that the "heat source" generated by the powering on of the induction coils 8 moves, namely, the "heat source" moves inside the pan body 5 and along the circumferential direction of the pan body 5, when the liquid above the controlled induction coil 8 is heated, the property (density and the like) of the heated part of the fluid changes, so that the fluid starts to rise in the whole medium, when the fluid reaches the top of the medium, the part of the fluid can continue to flow due to no vertical distance, the part of the fluid starts to flow laterally to the side and diffuse outwards, and when the heat is transferred to the air, the part of the medium cools down again, and forms a circular motion; the heat source is moved by changing the electrifying state of the induction coil 8, the convection in the horizontal direction is mixed or contracted according to the direction of the heat source, the generated movement follows the movement of the heat source in the pot body 5, and the fluid circulates in a stirring mode to achieve the aim of non-contact stirring. The invention adopts a heat flowing method, achieves the purpose of contactless intelligent stirring, prevents the material from pasting the bottom of the pan, avoids the defects of easy abrasion, large occupied space and the like of a mechanical stirrer, prolongs the service life of the pan body and improves the space utilization rate.

Note that the movement of the "heat source" does not mean that any one of the induction coils 8 is moved, but means that: the induction coils 8 at different positions are controlled to be electrified, so that heat is generated at different positions, namely, the heat source of the virtual object is moved through the change of the heat generation position.

Referring to fig. 3, optionally, the controlling the induction coils 8 at different positions or/and the induction coils 8 at different numbers to generate heat by being energized comprises:

forward heating mode: and controlling the plurality of induction coils 8 to be sequentially electrified in the clockwise direction for a second preset time.

Here, as shown in 3-2 of fig. 3, the setting mode for realizing the stirring function may be only one forward heating mode, that is, the plurality of induction coils 8 are controlled to be sequentially energized in the clockwise direction for a second preset time period, so that the heat source is moved to realize the non-contact stirring.

It should be noted that the operating coil in 3-2 in fig. 3 refers to the induction coil 8 in the energized state, and the non-operating coil refers to the induction coil 8 in the de-energized state.

For convenience of understanding, in this embodiment, the second preset time period is taken to be 3s, the number of the vortex generators 6 is six, the number of the induction coils 8 is six, and the induction coils 8 are respectively denoted as a first induction coil, a second induction coil, a third induction coil, a fourth induction coil, a fifth induction coil and a sixth induction coil. In the forward heating mode, the plurality of induction coils 8 are sequentially electrified in the clockwise direction for a second preset time period to move the heat source to realize non-contact stirring, and specifically, the method may include: and after the first induction coil is electrified and operated for 3s, the second induction coil starts to be electrified and operated, after the second induction coil is electrified and operated for 3s, the third induction coil starts to be electrified and operated, and the plurality of induction coils sequentially and circularly operate.

Optionally, the controlling the plurality of induction coils 8 to be sequentially energized in the clockwise direction for a second preset time period includes: in the clockwise direction, the plurality of induction coils 8 are controlled to be sequentially electrified and work for a second preset time length, wherein after the former induction coil 8 is electrified for the first preset time length, the latter induction coil 8 starts to be electrified and work, and the first preset time is less than the second preset time length.

Here, on the basis of the second preset duration, the first preset duration is set, that is, when the first induction coil does not work yet, the second induction coil starts to be powered on, for example, the first preset duration takes 2s, that is, after the first induction coil is powered on for 2s, the second induction coil starts to be powered on, and the first induction coil stops after the first induction coil works for 3s, because of the delay of the signal, the setting can ensure that the two adjacent induction coils 8 work continuously, and the heating and stirring efficiency is improved.

Optionally, as shown in 3-1 in fig. 3, the controlling the energizing of the induction coils 8 at different positions or/and the energizing of different numbers of induction coils 8 to generate heat further includes:

before the forward heating mode is operated, a rapid uniform heating mode is executed, namely, the induction coils 8 are controlled to be electrified and operated simultaneously, so that the material in the pot body 5 is uniformly heated.

Here, at the beginning stage, the controller 1 may control the plurality of induction coils 8 to simultaneously perform energization operation, so that all the induction coils 8 heat the materials above the induction coils, and the materials in the pot body 5 are rapidly and uniformly heated, and this heating manner may be referred to as a rapid and uniform heating mode, because in this mode, all the induction coils 8 are simultaneously energized and operated, so that there is no movement of the heat source, as shown in fig. 3-1, the rapid and uniform heating mode mainly achieves rapid heating of the materials in the pot body 5, and can be ended when the materials in the pot body 5 are well or semi-well, and then the controller 1 operates the forward heating mode to perform energization operation, so that the heat source moves to achieve non-contact stirring.

Wherein, as shown in 3-1 in fig. 3, a plurality of induction coils 8 are evenly distributed on the bottom side of the pot body 5 in the circumferential direction, when all the induction coils 8 are electrified to work, when the liquid above each induction coil 8 is heated, the properties (density and the like) of the heated part of the liquid are changed, so that the part of the liquid starts to rise in the whole medium, when the liquid reaches the top of the medium, the part of the liquid starts to flow laterally to the side and diffuse outwards due to no vertical distance, the part of the fluid flowing laterally diffuses to the center of the pot body, and when the heat is transferred to the air, the part of the medium cools and sinks again to form a circular motion, so that the rapid and even heating is realized.

It can be understood that the operation time of the rapid and uniform heating mode may be a fixed value preset by the controller 1, or may be manually set by a user, or may be controlled according to the properties of the temperature and/or density of the material in the pan body, for example, when the temperature in the pan body 5 reaches 90 ℃ or 100 ℃, the operation of the rapid and uniform heating mode is stopped, and after the rapid and uniform heating mode is stopped, the plurality of induction coils 8 are electrified to operate according to the forward heating mode, so that the heat source moves to realize contactless stirring, and undesirable phenomena such as pan sticking and pasting are prevented.

Referring to fig. 3, optionally, the controlling the induction coils 8 at different positions or/and the induction coils 8 at different numbers to generate heat by energization further includes:

reverse heating mode: controlling the plurality of induction coils 8 to be sequentially electrified in the anticlockwise direction for a second preset time;

and controlling the forward heating mode and the reverse heating mode to operate alternately.

Therefore, the setting mode comprises a forward heating mode and a reverse heating mode, and the forward heating mode and the reverse heating mode are controlled to alternately operate so as to move the heat source to realize non-contact stirring.

Here, as shown in fig. 3-3 and 3-2, the setting mode may further include a reverse heating mode on the basis of the forward heating mode, and further, the stirring effect may be better by an alternate stirring manner of forward stirring and reverse stirring. The working sequence of each induction coil in the forward heating mode and the reverse heating mode which are operated alternately can be embodied as follows: first induction coil-second induction coil-third induction coil-fourth induction coil-fifth induction coil-sixth induction coil-fifth induction coil-fourth induction coil-third induction coil-second induction coil-first induction coil.

Referring to fig. 3-4 in fig. 3, optionally, the number of the induction coils 8 is an even number, and is not less than four, and the controlling the induction coils 8 at different positions or/and the induction coils 8 at different numbers to generate heat by energization further includes:

opposite side oscillating heating mode: half induction coil 8 and half induction coil are alternately switched on in proper order for the third preset duration of work, wherein, half induction coil 8 and half induction coil 8 are in this internal symmetry of electromagnetism stove sets up.

And controlling the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode to sequentially and circularly operate.

Here, the setting mode for realizing the stirring function may only include a side-to-side oscillating heating mode, in which half of the induction coils 8 on one side start to operate simultaneously, after waiting for a third preset time period, the operating vortex generators 6 stop operating, and half of the induction coils 8 corresponding to the operating vortex generators on the other side start to operate simultaneously, and half of the induction coils 8 on both sides operate alternately without stop.

It can be understood that the first preset time period, the second preset time period and the third preset time period may be set by a user, and under the condition that the user does not set by the user, the values of the first preset time period, the second preset time period and the third preset time period are calibration values of the product when the product leaves the factory.

Optionally, the setting mode may simultaneously include a forward heating mode, a reverse heating mode and an opposite side oscillating heating mode, and further may sequentially and circularly operate by controlling the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode, so as to move the heat source and achieve non-contact stirring, specifically, the material in the pot body is stirred by controlling a sequential operation sequence, respective single operation durations and respective operation times of the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode, where the respective single operation durations include an operation duration of one time operation of the forward heating mode, an operation duration of one time operation of the reverse heating mode, and an operation duration of one time operation of the opposite side oscillating heating mode. Through the mutual combination of the forward heating mode, the reverse heating mode and the opposite side vibration heating mode, the stirring mode is various, and the stirring effect is better.

Referring to fig. 4, a control method of electromagnetic heating according to an embodiment of the present invention may include:

inputting a heating and stirring mode; the heating and stirring mode at least comprises the rapid heating and uniform mode, the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode, and the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode all relate to the movement of a heat source and have a stirring function, so the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode can be respectively called a forward rotating and stirring mode, a reverse rotating and stirring mode and an opposite side oscillating and stirring mode.

When the rapid uniform heating mode is operated, the controlling of the simultaneous energization of the plurality of induction coils 8 may include: all induction coils 8 are firstly controlled to be electrified and work T simultaneously_s0Time later, all induction coils 8 are controlled to be powered off t_s0Time later, all the induction coils 8 are controlled to be electrified and operated at the same time_s0Time, circulating until the uniform heating mode operates for a fourth preset time; wherein, by t of power-off_s0The time can avoid the induction coil from being in a power-on state all the time, and a certain cooling time T is given_s0And t_s0The setting can be changed according to the needs and performed by the user.

When the forward rotation stirring mode is operated, the following modes can be adopted: and in the forward direction, sequentially electrifying the plurality of induction coils 8 for a second preset time.

When the forward rotation stirring mode is operated, the following steps can be also performed: in the clockwise direction, sequentially electrifying the plurality of induction coils 8 for a second preset time period, wherein after the previous induction coil 8 is electrified for the first preset time period, the next induction coil 8 starts to be electrified for work, and the first preset time is shorter than the second preset time period; that is, it is ensured that not only the same energization time duration of the two adjacent induction coils 8 is the second preset time duration, but also the same common energization time duration of the two adjacent induction coils 8 is ensured, and the time of subtracting the first preset time duration from the second preset time duration is also ensured.

When the forward rotation stirring mode is operated, the following steps can be also performed: the two adjacent induction coils 8 are different in duration of power-on operation, that is, the first induction coil starts to be powered on first, and the duration of the first induction coil is T_s1+t_s2The working time of the second induction coil is T_s2+t_s3The working time of the third induction coil is T_s3+t_s4The working time of the fourth induction coil is T_s4+t_s5The working time of the fifth induction coil is T_s5+t_s6The working time of the sixth induction coil is T_s6+t_s1And the second induction coil reaches T in the working time of the first induction coil_s1The third induction coil starts to work when the working time of the second induction coil reaches T_s2The fourth induction coil starts to work when the working time of the third induction coil reaches T_s3The time begins to work, and the working time of the fifth induction coil reaches T in the working time of the fourth induction coil_s4The sixth induction coil starts to work when the working time of the fifth induction coil reaches T_s5Then the working time of the sixth induction coil reaches T_s6When the first induction coil starts to work again, the cycle is carried out;_Ts1、T_s2、T_s3、T_s4、T_s5、T_s6、t_s1、t_s2、t_s3、t_s4、t_s5、t_s6the setting can be made by the user.

When the backward rotation stirring mode is operated, the same as the forward rotation stirring mode, the direction is opposite, and the description is omitted.

When the opposite-side oscillation stirring mode is operated, the operation can be as follows: and after the first induction coil, the second induction coil and the third induction coil are electrified and work for a third preset time, the power is cut off, and then the fourth induction coil, the fifth induction coil and the sixth induction coil are electrified and work for a third preset time, so that the circulation is performed.

When the opposite side vibration stirring mode is operated, the following steps can be performed: first induction coil, second induction coil and third induction coil are electrified to work T_s123+t_s123The time length reaches T when the first induction coil, the second induction coil and the third induction coil are electrified_s123Then the fourth induction coil, the fifth induction coil and the sixth induction coil are electrified to work, and the electrifying working time of the fourth induction coil, the fifth induction coil and the sixth induction coil reaches T_s456Stopping after a certain time and then waiting for t_s456After a certain time, the first induction coil, the second induction coil and the third induction coil are electrified again to work in a cycle, wherein T_s123The duration may be the third preset duration or may be set by the user, T_s456The duration may be the third preset duration or may be set by the user, t_s123The duration may be zero or may be set by the user.

The terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or an implicit indication of the number of technical features indicated. Thus, features defined as "first," "second," "third," and "fourth" may explicitly or implicitly include at least one of the features.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. The utility model provides an electromagnetic heating device, its characterized in that, includes electromagnetism stove body, controller (1), vortex generator (6) and induction coil (8), and is a plurality of vortex generator (6) the input respectively with controller (1) electricity is connected, and is a plurality of vortex generator (6) the output respectively with a plurality of induction coil (8) electricity is connected, and is a plurality of induction coil (8) set up in this is internal, and is a plurality of induction coil (8) are annular evenly distributed, induction coil (8) are suitable for and generate heat under the circular telegram, controller (1) are suitable for control different positions induction coil (8) or/and different quantity induction coil (8) circular telegram generate heat.

2. Electromagnetic heating device according to claim 1, characterized in that between each vortex generator (6) and the controller (1) a relay (7) is provided, which relay (7) is controlled by the controller (1) to de-energize or energize the vortex generator (6).

3. Electromagnetic heating device according to claim 2, characterized in that the controller (1) is connected to the relay (7) by means of a control cable (2), the relay (7) being connected to the vortex generator (6) by means of a power cable (3).

4. Electromagnetic heating device according to claim 2, characterized in that the number of induction coils (8) is an even number and greater than or equal to four.

5. A control method of electromagnetic heating based on the electromagnetic heating device according to any one of claims 1 to 4, characterized by comprising:

when the pot body (5) is arranged on the electromagnetic oven body of the electromagnetic heating device, the induction coils (8) at different positions or/and the induction coils (8) with different numbers are controlled to be electrified and heated so as to heat the pot body (5).

6. The control method of electromagnetic heating according to claim 5, wherein the controlling of the induction coils (8) at different positions or/and the different number of induction coils (8) to generate heat by energization comprises:

forward heating mode: and controlling the plurality of induction coils (8) to be sequentially electrified for a second preset time in the clockwise direction.

7. The control method of electromagnetic heating according to claim 6, characterized in that said controlling of sequential energization of said plurality of induction coils (8) in a clockwise direction for a second preset duration comprises:

and in the clockwise direction, controlling the plurality of induction coils (8) to be sequentially electrified and operated for a second preset time length, wherein after the previous induction coil (8) is electrified for the first preset time length, the next induction coil (8) starts to be electrified and operated, and the first preset time is shorter than the second preset time length.

8. The control method of electromagnetic heating according to claim 6, wherein the controlling the induction coils (8) at different positions or/and the induction coils (8) at different numbers to generate heat by electrifying further comprises:

and controlling the induction coils (8) to be electrified and operated simultaneously before the forward heating mode is operated.

9. The control method of electromagnetic heating according to claim 6, wherein the controlling the induction coils (8) at different positions or/and the induction coils (8) at different numbers to generate heat by electrifying further comprises:

reverse heating mode: controlling the plurality of induction coils (8) to be sequentially electrified in the anticlockwise direction for a second preset time;

and controlling the forward heating mode and the reverse heating mode to operate alternately.

10. The control method of electromagnetic heating according to claim 9, wherein the controlling the induction coils (8) at different positions or/and the induction coils (8) at different numbers to generate heat by energizing further comprises:

opposite side oscillating heating mode: one half of the induction coils (8) and the other half of the induction coils (8) are sequentially and alternately electrified to work for a third preset time, wherein one half of the induction coils (8) and the other half of the induction coils (8) are symmetrically arranged in the induction cooker body;

and controlling the forward heating mode, the reverse heating mode and the opposite side oscillating heating mode to sequentially and circularly operate.

Images