TW201311193A - Induction cooker with time-sharing control function and method of operating the same - Google Patents

Abstract

An induction cooker with a time-sharing control function and a method of operating the same are disclosed. The induction cooker includes a plurality of switch elements, a control unit, and a plurality of cooker units. The control unit is electrically connected to the switch elements to turn on or turn off the switch elements. Each cooker unit is electrically connected to two corresponding switch elements. The control unit provides switching control to two switch elements corresponding to a cooker unit under switching control, and turns on other switch elements. Therefore, the induction cooker can be alternately operated in time-sharing control manner.

Description

Induction cooker structure with time sharing control function and operation method thereof

The invention relates to an electromagnetic stove structure and an operation method thereof, in particular to an electromagnetic stove structure with a time-sharing control function and an operation method thereof.

An induction cooker composed of a power electronic circuit is an electromagnetic induction heating principle, which generates an alternating magnetic field through an AC power source of different frequencies, and then generates an induced current due to magnetic line cutting on the pot, and the induced current generated is caused by the pot. It has internal resistance loss and is converted into heat energy, thus achieving the purpose of heating. Because of its high thermal efficiency, easy to use, smokeless smoke, no gas pollution, safety and health, etc., it is very suitable for modern home use.

However, for the application of multi-induction cookers, due to the increase in the number of stoves used, the switching elements required for the conversion circuit of each induction cooker are also increased. In this way, when the multi-electromagnetic cooker is in the working state, not only the control circuit is more complicated, but also the energy consumption of more switching elements will be caused.

Therefore, how to design an electromagnetic cooker structure with time-sharing control function and its operation method, and use the control of the duty cycle ratio of the switch unit to realize the induction cooker with time-sharing control function The architecture, which simplifies the control circuitry and reduces the amount of switching components, is a major issue that the creators of the case have overcome and solved.

It is an object of the present invention to provide an electromagnetic oven architecture having a time sharing control function that overcomes the problems of the prior art.

Therefore, the electromagnetic cooker structure with time-sharing control function of the present invention comprises a plurality of switch units, a controller unit and a plurality of stove units. The controller unit is electrically connected to the switch units to provide on and off control for each of the switch units. Each of the furnace units corresponds to two of the switch units and is electrically connected to the two switch units. Wherein, the controller unit provides switching control for the switch unit adjacent to the stove unit in the working state; and provides conduction control for the switch unit not adjacent to the stove unit in the working state, to The working order of the stove units provides time-sharing control.

Another object of the present invention is to provide an operating method of an electromagnetic oven architecture having a time sharing control function to overcome the problems of the prior art.

Therefore, the operating method of the electromagnetic cooker structure with time-sharing control function of the present invention comprises the following steps: (a) providing a plurality of switch units; (b) providing a plurality of stove units; (c) providing a controller unit; And (d) the controller unit provides switching control for the switching unit adjacent to the furnace unit in the working state; and provides conduction control for the switching unit not adjacent to the furnace unit in the working state, Time-sharing control is provided for the working order of the stove units.

In order to further understand the technology, the means and the effect of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The detailed description is to be understood as illustrative and not restrictive.

The technical content and detailed description of the present invention are as follows:

The invention discloses an electromagnetic cooker structure with a time-sharing control function, which is powered by an alternating current power source. The induction cooker architecture includes a plurality of switch units, a controller unit, and a plurality of switch units. The controller unit is electrically connected to the switch units to provide on and off control for each of the switch units. Each of the furnace units corresponds to two of the switch units and is electrically connected to the two switch units. Wherein, the controller unit provides switching control for the switch unit adjacent to the stove unit in the working state; and provides conduction control for the switch unit not adjacent to the stove unit in the working state, to The working order of the stove units provides time-sharing control.

The operation of the induction cooker structure with the time division control function will be described by taking different embodiments as an example.

Please refer to FIG. A, which is a circuit diagram of a first embodiment of an electromagnetic oven architecture with time sharing control function according to the present invention. As shown in the figure, the induction cooker structure mainly comprises two stove units L11, L12 (that is, a first stove unit L11 and a second stove unit L12), and four switch units S11~S14 (also That is, a first switch unit S11, a second switch unit S12, a third switch unit S13 and a fourth switch unit S14) and a controller unit Uc1. Each of the switching units is a power transistor switch, which may be a metal oxide semiconductor field effect transistor (MOSFET), a double carrier junction transistor (BJT) or an insulated gate bipolar transistor ( IGBT), but not limited to this. The first switch unit S11 is electrically connected to the second switch unit S12, and is electrically connected to the first stove unit L11. In addition, the third switch unit S13 is electrically connected to the fourth switch unit S14, and is further electrically connected to the second stove unit L12.

The controller unit Uc1 provides signal level complementary switching control through the two corresponding switching units adjacent to the stove unit in the working state, and the switching unit adjacent to the stove unit not in the working state A conduction control is provided to provide a time sharing control for the first stove unit L11 and the second stove unit L12. As for the detailed operation of the time-sharing control, referring to the first figure B, it is a timing chart of the time-sharing control of the first embodiment of the electromagnetic cooker structure of the present invention. The controller unit Uc1 generates a first control signal S11', a second control signal S12', a third control signal S13', and a fourth control signal S14' to respectively control the first switch unit S11, the The second switching unit S12, the third switching unit S13, and the fourth switching unit S14 are turned on and off.

Taking the timing diagram of the time-sharing control as an example, it is assumed that the output power of the first stove unit L11 and the second stove unit L12 are controlled to be 800 watts and 400 watts respectively, and at this time, the time division in one cycle Under the control mechanism, the output power of the first stove unit L11 is controlled first, and then the output power of the second stove unit L12 is controlled, but not limited thereto. In this way, the controller unit Uc1 can control the first switch unit S11 and the second switch unit S12 by complementary switching at a first time t11 to control the output power of the first stove unit L11, that is, when When the first control signal S11' is at a high level, the second control signal S12' is at a low level; and vice versa, at this time, the second furnace unit L12 is in an output-free state, therefore, the first The third control signal S13' and the fourth control signal S14' are both at a low level and are respectively turned off by the third switching unit S13 and the fourth switching unit S14. Until a second time t12, the wheel outputs power for the second stove unit L12, and the first stove unit L11 is in an output-free state. Therefore, the controller unit Uc1 starts to control the third switching unit S13 and the fourth switching unit S14 by complementary switching, that is, when the third control signal S13' is at a high level, the fourth control signal S14 'There is a low level; vice versa, to control the output power of the second stove unit L12, and the first control signal S11' and the second control signal S12' are both low level and respectively cut off the first The switch unit S11 and the second switch unit S12. Until a third time t13, the induction cooktop structure with the time sharing control function completes one cycle of time division control, and controls the duty cycle of the first furnace unit L11 and the second stove unit L12 ( The duty cycle ratio is 2:1, so that the output power of the first stove unit L11 and the second stove unit L12 are 800 watts and 400 watts, respectively.

Please refer to FIG. 2A, which is a circuit diagram of a second embodiment of an electromagnetic oven structure with time sharing control function according to the present invention. As shown in the figure, the induction cooker structure mainly comprises four stove units L21~L24 (that is, a first stove unit L21, a second stove unit L22, a third stove unit L23 and a first Four furnace unit L24), six switch units S21~S26 (that is, a first switch unit S21, a second switch unit S22, a third switch unit S23, a fourth switch unit S24, a fifth switch The unit S25 and a sixth switching unit S26) and a controller unit Uc2. The first switch unit S21 is electrically connected to the second switch unit S22, and is electrically connected to the first stove unit L21. The second switch unit S22 is electrically connected to the third switch unit S23, and And electrically connected to the second stove unit L22. In addition, the fourth switch unit S24 is electrically connected to the fifth switch unit S25, and is electrically connected to the third stove unit L23. The fifth switch unit S25 is electrically connected to the sixth switch unit S26. And electrically connected to the fourth stove unit L24.

The controller unit Uc2 provides signal level complementary switching control through the two corresponding switching units adjacent to the stove unit in the working state, and the switching unit adjacent to the stove unit not in the working state Providing conduction control to provide a time-sharing control for the first stove unit L21 and the second stove unit L22 and providing a time-sharing control for the third stove unit L23 and the fourth stove unit L24 . As for the detailed operation of the time-sharing control, referring to FIG. 2B, it is a timing chart of the time-sharing control of the second embodiment of the electromagnetic cooker structure of the present invention. The controller unit Uc2 generates a first control signal S21', a second control signal S22', a third control signal S23', a fourth control signal S24', a fifth control signal S25', and a sixth Control signal S26' to control the first switch unit S21, the second switch unit S22, the third switch unit S23, the fourth switch unit S24, the fifth switch unit S25, and the sixth switch unit S26, respectively Turn-on and cut-off.

Taking the timing chart of the time-sharing control as an example, it is assumed that the output power of the first stove unit L21 and the second stove unit L22 are controlled to be 400 watts and 800 watts, respectively, and the third stove unit is simultaneously controlled. The output power of L23 and the fourth stove unit L24 are respectively 800 watts and 400 watts. At this time, under the time-sharing control mechanism in one cycle, the output power of the first stove unit L21 is first controlled, and then the first control unit The output power of the second furnace unit L22 is not limited thereto. It is worth mentioning that the output power of the third stove unit L23 can be controlled first, and then the output power of the fourth stove unit L24 is controlled, but not limited thereto. That is, the controller unit Uc2 can simultaneously control the first stove unit L21 and the second stove unit L22 and selectively control the third stove unit L23 and the fourth stove unit L24. In this way, the controller unit Uc2 can start to control the first switch unit S21 and the second switch unit S22 by complementary switching at a first time t21, and turn on the third switch unit S23 to control the first stove. The output power of the unit L21, that is, when the first control signal S21' is at a high level, the second control signal S22' is at a low level, and the third control signal S23' is maintained at a high level; However, at this time, the second stove unit L22 is in a state of no output power. In this time condition, the first stove unit L21 is a stove unit in an operating state, and the second stove unit L22 is a stove unit in a non-operating state, and, in the following embodiments All are the same definition, so I won't go into details. At the same time, the controller unit Uc2 can start to control the fourth switch unit S24 and the fifth switch unit S25 by complementary switching at the first time t21, and turn on the sixth switch unit S26 to control the third stove. The unit L23 outputs power, that is, when the fourth control signal S24' is at a high level, the fifth control signal S25' is at a low level, and the sixth control signal S26' is maintained at a high level; However, at this time, the fourth stove unit L24 is in a state of no output power. Until a second time t22, the wheel outputs power for the second stove unit L22, while the first stove unit L21 is in an output-free state, and the third stove unit L23 maintains output power. Therefore, the controller unit Uc2 starts to control the second switching unit S22 and the third switching unit S23 by complementary switching, and turns on the first switching unit S21, that is, when the second control signal S22' is high-precision In the bit position, the third control signal S23' is at a low level, and the first control signal S21' maintains a high level; vice versa, to control the output power of the second stove unit L22, and the fourth The switching unit S24 and the fifth switching unit S25 still maintain the complementary switching control, and the sixth switching unit S26 still maintains conduction to control the third furnace unit L23 to continuously output power. Until a third time t23, the wheel outputs power for the fourth stove unit L24, and the third stove unit L23 is in an output-free state, and the second stove unit L22 maintains output power. Therefore, the controller unit Uc2 starts to control the fifth switching unit S25 and the sixth switching unit S26 by complementary switching, and turns on the fourth switching unit S24, that is, when the fifth control signal S25' is high-precision In the bit position, the sixth control signal S26' is at a low level, and the fourth control signal S24' maintains a high level; vice versa, to control the output power of the fourth furnace unit L24, and the second The switching unit S22 and the third switching unit S23 still maintain the complementary switching control, and the first switching unit S21 still maintains conduction to control the second furnace unit L22 to continuously output power. Up to a fourth time t24, the induction cooktop structure with the time sharing control function completes one cycle of time division control, and controls the duty cycle of the first stove unit L21 and the second stove unit L22 ( Duty cycle) The ratio is 1:2, so that the output power of the first stove unit L21 and the second stove unit L22 are 400 watts and 800 watts, respectively. In addition, the ratio of the duty cycle of the third stove unit L23 to the fourth stove unit L24 is 2:1, so that the third stove unit L23 and the fourth stove unit L24 output power. They are 800 watts and 400 watts respectively.

Please refer to FIG. 3A, which is a circuit diagram of a third embodiment of an electromagnetic oven structure with time sharing control function according to the present invention. The embodiment is substantially the same as the electromagnetic oven architecture of the second embodiment described above, and the biggest difference is that the third embodiment further includes a plurality of diode units D31 D D34 (ie, a first The diode unit D31, a second diode unit D32, a third diode unit D33, and a fourth diode unit D34). The first diode unit D31 is electrically connected between a first switch unit S31 and a second switch unit S32 and a third switch unit S33; the second diode unit The D32 is electrically connected between the third switch unit S33 and the electrical connection between the first switch unit S31 and the second switch unit S32; the third diode unit D33 is electrically connected to a fourth The electrical connection between the switch unit S34 and a fifth switch unit S35 and a sixth switch unit S36; the fourth diode unit D34 is electrically connected to the sixth switch unit S36 and the fourth switch unit Between S34 and the fifth switch unit S35 is electrically connected. Moreover, the timing control timing of the embodiment is the same as that of the second embodiment. Please refer to FIG. 3B, which is a timing diagram of the time division control of the third embodiment of the electromagnetic oven architecture of the present invention.

As shown in FIG. 3A, since each of the switching units S31 to S36 is connected in parallel with an inverting diode (not shown) and a parasitic capacitor (not shown), parasitic due to the characteristics of the components themselves. The effect causes the switching units S31 to S36 of the induction cooker structure to cause a poor switching action to accumulate parasitic losses and aggravate the electromagnetic interference effect during the zero voltage switching operation. Therefore, in this embodiment, the flywheel diode functions played by the diode units D31 to D34 are provided to provide current freewheeling of the switching units S31 to S36 during zero voltage switching operation. Path to improve the effect of the second embodiment due to parasitic effects.

Please refer to FIG. 4A, which is a circuit diagram of a fourth embodiment of an electromagnetic oven structure with time sharing control function according to the present invention. As shown in the figure, the induction cooker structure mainly comprises three stove units L41~L43 (that is, a first stove unit L41, a second stove unit L42 and a third stove unit L43), Switching units S41 to S45 (that is, a first switching unit S41, a second switching unit S42, a third switching unit S43, a fourth switching unit S44, and a fifth switching unit S45) and a controller unit Uc4. The first switch unit S41 is electrically connected to the second switch unit S42, and is further electrically connected to the first stove unit L41; the second switch unit S42 is electrically connected to the third switch unit S43, and And electrically connected to the second stove unit L42. In addition, the fourth switch unit S44 is electrically connected to the fifth switch unit S45, and is further electrically connected to the third stove unit L43.

The controller unit Uc4 provides signal level complementary switching control through the two corresponding switching units adjacent to the stove unit in the working state, and the switching unit adjacent to the stove unit not in the working state The conduction control is provided to provide a time-sharing control for the first stove unit L41 and the second stove unit L42 and a time-sharing control for the third stove unit L43. As for the detailed operation of the time-sharing control, referring to FIG. 4B, it is a timing chart of the time-sharing control of the fourth embodiment of the electromagnetic cooker structure of the present invention. The controller unit Uc4 generates a first control signal S41', a second control signal S42', a third control signal S43', a fourth control signal S44' and a fifth control signal S45' for respectively controlling The first switching unit S41, the second switching unit S42, the third switching unit S43, the fourth switching unit S44, and the fifth switching unit S45 are turned on and off.

Taking the timing diagram of the time-sharing control as an example, it is assumed that the output power of the first stove unit L41 and the second stove unit L42 are controlled to be 800 watts and 400 watts, respectively, and the third stove unit is simultaneously controlled. The output power of L43 is 600 watts. At this time, under the time-sharing control mechanism in one cycle, the output power of the first stove unit L41 is first controlled, and then the output power of the second stove unit L42 is controlled, but not Limited. That is, the controller unit Uc4 can simultaneously control the first stove unit L41 and the second stove unit L42 and control the third stove unit L43. In this way, the controller unit Uc4 can control the first switch unit S41 and the second switch unit S42 by complementary switching at a first time t41, and turn on the third switch unit S43 to control the first stove. The unit L41 outputs power, that is, when the first control signal S41' is at a high level, the second control signal S42' is at a low level, and the third control signal S43' is maintained at a high level; However, at this time, the second stove unit L42 is in a state of no output power. At the same time, the controller unit Uc4 can control the fourth switch unit S44 and the fifth switch unit S45 by complementary switching at the first time t41 to control the output power of the third stove unit L43, that is, when When the fourth control signal S44' is at a high level, the fifth control signal S45' is at a low level; and vice versa, until a second time t42, the third furnace unit L43 is in an output-free state. And, the first stove unit L41 still maintains output power. Therefore, the fourth control signal S44' and the fifth control signal S45' are both at a low level and respectively turn off the fourth switching unit S44 and the fifth switching unit S45 to control the third furnace unit L43 to have no output. The power, and the first switching unit S41 and the second switching unit S42 still maintain the complementary switching control, and the third switching unit S43 remains conductive to control the first furnace unit L41 to continuously output power. Until a third time t43, the wheel outputs power for the second stove unit L42, and the first stove unit L41 is in an output-free state, and the third stove unit L43 still maintains no output power. Therefore, the controller unit Uc4 starts to control the second switching unit S42 and the third switching unit S43 by complementary switching, and turns on the first switching unit S41, that is, when the second control signal S42' is high-precision In the bit position, the third control signal S43' is at a low level, and the first control signal S41' maintains a high level; vice versa, to control the output power of the second stove unit L42, and the fourth The switching unit S44 and the fifth switching unit S45 still maintain the off control to maintain the third furnace unit L43 still without output power. Up to a fourth time t44, the induction cooktop structure with the time sharing control function completes one cycle of time division control, and controls the duty cycle of the first stove unit L41 and the second stove unit L42 ( The duty cycle ratio is 2:1, so that the output power of the first stove unit L41 and the second stove unit L42 are 800 watts and 400 watts, respectively. Further, by controlling the duty cycle of the third furnace unit L43 to be 50%, the output power of the third furnace unit L43 is 600 watts.

Please refer to FIG. 5A, which is a circuit diagram of a fifth embodiment of an electromagnetic oven architecture with time sharing control function according to the present invention. As shown in the figure, the induction cooker structure mainly comprises three stove units L51~L53 (that is, a first stove unit L51, a second stove unit L52 and a third stove unit L53), four The switch units S51~S54 (that is, a first switch unit S51, a second switch unit S52, a third switch unit S53 and a fourth switch unit S54) and a controller unit Uc5. The first switch unit S51 is electrically connected to the second switch unit S52, and is electrically connected to the first stove unit L51; the second switch unit S52 is electrically connected to the third switch unit S53, and And electrically connected to the second stove unit L52; the third switch unit S53 is electrically connected to the fourth switch unit S54, and is electrically connected to the third stove unit L53.

The controller unit Uc5 provides signal level complementary switching control through the two corresponding switching units adjacent to the stove unit in the working state, and the switching unit adjacent to the stove unit not in the working state A conduction control is provided to provide a time sharing control for the first stove unit L51, the second stove unit L52, and the third stove unit L53. As for the detailed operation of the time-sharing control, referring to FIG. 5B, it is a timing chart of the time-sharing control of the fifth embodiment of the electromagnetic cooker structure of the present invention. The controller unit Uc5 generates a first control signal S51', a second control signal S52', a third control signal S53', and a fourth control signal S54' to respectively control the first switch unit S51. The second switching unit S52, the third switching unit S53, and the fourth switching unit S54 are turned on and off.

Taking the timing diagram of the time-sharing control as an example, it is assumed that the output power of the first stove unit L51, the second stove unit L52, and the third stove unit L53 are controlled to be 600 watts, 400 watts, and 200 watts, respectively. At this time, under the time-sharing control mechanism in one cycle, the output power of the first stove unit L51 is first controlled, then the output power of the second stove unit L52 is controlled, and then the output of the third stove unit L53 is controlled. Power, but not limited to this. That is, the controller unit Uc5 can simultaneously control the first stove unit L51, the second stove unit L52 or the third stove unit L53. In this way, the controller unit Uc5 can start to control the first switch unit S51 and the second switch unit S52 by complementary switching at a first time t51, and turn on the third switch unit S53 and the fourth switch unit S54. To control the output power of the first stove unit L51, that is, when the first control signal S51' is at a high level, the second control signal S52' is at a low level, and the third control signal S53' Maintaining a high level with the fourth control signal S54'; and vice versa, at this time, the second stove unit L52 and the third stove unit L53 are both in an output-free state. Until a second time t52, the wheel outputs power for the second stove unit L52, and the first stove unit L51 and the third stove unit L53 are in a state of no output power. At this time, the controller unit Uc5 starts to control the second switching unit S52 and the third switching unit S53 by complementary switching, and turns on the first switching unit S51 and the fourth switching unit S54 to control the second furnace. The output power of the unit L52, that is, when the second control signal S52' is at a high level, the third control signal S53' is at a low level, and the first control signal S51' and the fourth control signal S54' maintains a high level; and vice versa, at this time, the first stove unit L51 and the third stove unit L53 are in a state of no output power. Until a third time t53, the wheel outputs power for the third stove unit L53, and the first stove unit L51 and the second stove unit L52 are in an output-free state. At this time, the controller unit Uc5 starts to control the third switch unit S53 and the fourth switch unit S54 by complementary switching, and turns on the first switch unit S51 and the second switch unit S52 to control the third furnace. The output power of the unit L53, that is, when the third control signal S53' is at a high level, the fourth control signal S54' is at a low level, and the first control signal S51' and the second control signal S52' maintains a high level; and vice versa, at this time, the first stove unit L51 and the second stove unit L52 are in a state of no output power. Up to a fourth time t54, the induction cooktop structure with the time sharing control function completes one cycle of time division control, and controls the first stove unit L51, the second stove unit L52 and the third The ratio of the duty cycle of the stove unit L53 is 3:2:1, so that the output power of the first stove unit L51, the second stove unit L52 and the third stove unit L53 are respectively 600 watts. 400 watts and 200 watts.

Please refer to FIG. 6A, which is a circuit diagram of a sixth embodiment of an electromagnetic oven architecture with time sharing control function according to the present invention. As shown in the figure, the induction cooker structure mainly comprises four stove units L61~L64 (that is, a first stove unit L61, a second stove unit L62, a third stove unit L63 and a first The four-furnace unit L64), the two switch units S61, S62 (that is, a first switch unit S61 and a second switch unit S62), and four auxiliary switch units G61-G64 (that is, a first auxiliary switch) The unit G61, a second auxiliary switch unit G62, a third auxiliary switch unit G63 and a fourth auxiliary switch unit G64) and a controller unit Uc6. Each of the auxiliary switching units is a bidirectional triode fluid (TRIAC) or a controlled rectifier (SCR), but is not limited thereto. The first auxiliary switch unit G61 is electrically connected in series to the first stove unit L61; the second auxiliary switch unit G62 is electrically connected in series to the second stove unit L62; the third auxiliary switch unit G63 is electrically connected in series The third stove unit L63 is connected; the fourth auxiliary switch unit G64 is electrically connected in series to the fourth stove unit L64. The first switch unit S61 is electrically connected to the second switch unit S62, and is further electrically connected to the series-connected auxiliary switch units G61-G64 and the stove units L61-L64. The controller unit Uc6 provides signal level complementary switching control through the two corresponding switching units adjacent to the stove unit in the working state, and the switching unit adjacent to the stove unit not in the working state A conduction control is provided to provide a time sharing control for the first stove unit L61, the second stove unit L62, the third stove unit L63, and the fourth stove unit L64. As for the detailed operation of the time-sharing control, referring to FIG. 6B, it is a timing chart of the time-sharing control of the sixth embodiment of the electromagnetic cooker structure of the present invention. The controller unit Uc6 generates a first control signal S61' and a second control signal S62' to respectively control the on and off of the first switching unit S61 and the second switching unit S62. Moreover, the controller unit Uc6 generates a first auxiliary control signal G61', a second auxiliary control signal G62', a third auxiliary control signal G63', and a fourth auxiliary control signal G64' to respectively control the first The auxiliary switching unit G61, the second auxiliary switching unit G62, the third auxiliary switching unit G63, and the fourth auxiliary switching unit G64 are turned on and off.

Taking the timing chart of the time-sharing control as an example, it is assumed that the output power of the first stove unit L61, the second stove unit L62, the third stove unit L63, and the fourth stove unit L64 are respectively controlled. 400 watts, 400 watts, 200 watts and 200 watts. At this time, under the time-sharing control mechanism in one cycle, the output power of the first stove unit L61 is first controlled, and then the output power of the second stove unit L62 is controlled. Then, the output power of the third stove unit L63 is controlled, and finally the output power of the fourth stove unit L64 is controlled, but not limited thereto. That is, the controller unit Uc6 can simultaneously control the first stove unit L61, the second stove unit L62, the third stove unit L63 or the fourth stove unit L64. In this way, the controller unit Uc6 can start to control the first switch unit S61 and the second switch unit S62 by complementary switching at a first time t61, and turn on the first auxiliary switch unit G61 to control the first furnace. The output power of the unit L61, that is, when the first control signal S61' is at a high level, the second control signal S62' is at a low level, and the first auxiliary control signal G61' maintains a conduction level. Moreover, the remaining auxiliary control signals G62'-G64' maintain the cut-off level; and vice versa, at this time, the second stove unit L62, the third stove unit L63, and the fourth stove unit L64 are both at No output power status. Until a second time t62, the wheel outputs power for the second stove unit L62, and the first stove unit L61, the third stove unit L63 and the fourth stove unit L64 are in an output-free state. . At this time, the controller unit Uc6 continues to control the first switch unit S61 and the second switch unit S62 by complementary switching, and turns on the second auxiliary switch unit G62 to control the output power of the second stove unit L62. That is, when the first control signal S61' is at a high level, the second control signal S62' is at a low level, and the second auxiliary control signal G62' maintains a conduction level, and the rest of the auxiliary signals The control signals G61'-G64' maintain the cut-off level; and vice versa, at this time, the first stove unit L61, the third stove unit L63, and the fourth stove unit L64 are all in an output-free state. Until a third time t63, the wheel outputs power for the third stove unit L63, and the first stove unit L61, the second stove unit L62 and the fourth stove unit L64 are in an output-free state. . At this time, the controller unit Uc6 continues to control the first switching unit S61 and the second switching unit S62 by complementary switching, and turns on the third auxiliary switching unit G63 to control the output power of the third furnace unit L63. That is, when the first control signal S61' is at a high level, the second control signal S62' is at a low level, and the third auxiliary control signal G63' maintains a conduction level, and the rest of the auxiliary signals The control signals G61'-G64' maintain the cut-off level; and vice versa, at this time, the first stove unit L61, the second stove unit L62, and the fourth stove unit L64 are all in an output-free state. Until a fourth time t64, the wheel outputs power for the fourth stove unit L64, and the first stove unit L61, the second stove unit L62 and the third stove unit L63 are in an output-free state. . At this time, the controller unit Uc6 continues to control the first switching unit S61 and the second switching unit S62 by complementary switching, and turns on the fourth auxiliary switching unit G64 to control the output power of the fourth furnace unit L64. That is, when the first control signal S61' is at a high level, the second control signal S62' is at a low level, and the fourth auxiliary control signal G64' maintains a conduction level, and the rest of the auxiliary signals The control signals G61'-G63' maintain the cut-off level; and vice versa, at this time, the first stove unit L61, the second stove unit L62, and the third stove unit L63 are all in an output-free state. Up to a fifth time t65, the induction cooktop structure with the time sharing control function completes one cycle of time division control, and controls the first stove unit L61, the second stove unit L62, the third The ratio of the duty cycle of the stove unit L63 and the fourth stove unit L64 is 2:2:1:1, so that the first stove unit L61, the second stove unit L62, and the third furnace The output power of the unit L63 and the fourth furnace unit L64 are 400 watts, 400 watts, 200 watts, and 200 watts, respectively.

Please refer to FIG. 7A, which is a circuit diagram of a seventh embodiment of an electromagnetic oven structure with time sharing control function according to the present invention. Wherein, the embodiment is substantially the same as the electromagnetic cooker structure of the sixth embodiment described above, and the biggest difference is only that the series-connected auxiliary switch units G71-G74 and the stove units L71-L74 are connected in parallel with each other. Re-grounding, such a circuit structure is mainly based on the noise isolation effect provided by the grounding, so that the auxiliary switching units G71~G74 can avoid the interference of noise, and the auxiliary control generated by a controller unit Uc7 The signals G71'~G74' reach the correct control. Moreover, the timing control timing of the present embodiment is the same as that of the sixth embodiment. Please refer to FIG. 7B, which is a timing diagram of the time division control of the seventh embodiment of the electromagnetic oven architecture of the present invention.

Please refer to the eighth figure, which is a flow chart of the operation method of the electromagnetic cooker structure with time sharing control function of the present invention. The operating method of the induction cooktop structure with time-sharing control function comprises the following steps: providing a plurality of switching units (S100). Each of the switching units is a power transistor switch, which may be a metal oxide semiconductor field effect transistor (MOSFET), a double carrier junction transistor (BJT) or an insulated gate bipolar transistor ( IGBT), but not limited to this. A plurality of stove units (S200) are provided. Wherein each of the stove units is an induction cooker. A controller unit (S300) is provided. The controller unit provides signal level complementary switching control through the two corresponding switching units adjacent to the stove unit in the working state, and the switching unit adjacent to the stove unit not in the working state, A conduction control is provided to provide time-sharing control for the working order of the stove units (S400). Wherein, the controller unit provides a signal level signal level complementary switching control for the two corresponding switch units, and uses the control of the length of the work cycle, and then alternately controls the control sequence of the stove units to The induction cooker architecture provides time-sharing control. In addition, the operating method of the electromagnetic cooker structure with time-sharing control function further comprises the steps of: providing a plurality of flywheel diode units to provide a current freewheeling path of the switching units at zero voltage switching. A plurality of auxiliary switching units are provided to provide time-sharing control of the induction cooktop structure through control of the duty cycle. Each of the auxiliary switching units is a bidirectional triode fluid (TRIAC) or a controlled rectifier (SCR).

In summary, the present invention has the following advantages:

1. By providing control of the duty cycle ratio of the switch unit, an induction cooker structure with time-sharing control is implemented to simplify the control circuit and reduce the energy consumption caused by the number of switching elements;

2. By adding a diode unit to improve the parasitic loss and electromagnetic interference caused by the parasitic effects of the components of the induction unit of the induction cooker during zero voltage switching operation;

3. The grounding connection is adopted through the electromagnetic oven structure to improve the interference effect of the noise on the auxiliary switching units.

However, the above description is only for the detailed description and the drawings of the preferred embodiments of the present invention, and the present invention is not limited thereto, and is not intended to limit the present invention. The scope of the patent application is intended to be included in the scope of the present invention, and any one skilled in the art can readily appreciate it in the field of the present invention. Variations or modifications may be covered by the patents in this case below.

Vin. . . Input voltage

S11~S71. . . First switch unit

S12~S72. . . Second switching unit

S13~S53. . . Third switch unit

S14~S54. . . Fourth switch unit

S25~S45. . . Fifth switch unit

S26~S26. . . Sixth switch unit

G61~G71. . . First auxiliary switch unit

G62~G72. . . Second auxiliary switch unit

G63~G73. . . Third auxiliary switch unit

G64~G74. . . Fourth auxiliary switch unit

L11~L71. . . First stove unit

L12~L72. . . Second stove unit

L13~L73. . . Third stove unit

L14~L74. . . Fourth stove unit

Uc1~Uc7. . . Controller unit

D31. . . First diode unit

D32. . . Second diode unit

D33. . . Third diode unit

D34. . . Third diode unit

S11’~S71’. . . First control signal

S12’~S72’. . . Second control signal

S13’~S53’. . . Third control signal

S14’~S54’. . . Fourth control signal

S25’~S45’. . . Fifth control signal

S26’~S26’. . . Sixth control signal

G61’~G71’. . . First auxiliary control signal

G62’~G72’. . . Second auxiliary control signal

G63’~G73’. . . Third auxiliary control signal

G64’~G74’. . . Fourth auxiliary control signal

T11~t71. . . first timing

T12~t72. . . Second time

T13~t73. . . Third time

T24~t74. . . Fourth time

T65~t75. . . Fifth time

S100~S500. . . step

FIG. 1 is a schematic circuit diagram of a first embodiment of an electromagnetic oven structure with time sharing control function according to the present invention;

The first figure B is a timing chart of the time division control of the first embodiment of the electromagnetic cooker structure of the present invention;

2 is a circuit diagram of a second embodiment of an electromagnetic cooker structure with a time sharing control function according to the present invention;

FIG. 2B is a timing chart of time division control of the second embodiment of the electromagnetic cooker structure of the present invention; FIG.

FIG. 3 is a schematic circuit diagram of a third embodiment of an electromagnetic oven structure with time sharing control function according to the present invention; FIG.

FIG. 3B is a timing chart of time-sharing control of the third embodiment of the electromagnetic cooker structure of the present invention; FIG.

FIG. 4 is a schematic circuit diagram of a fourth embodiment of an electromagnetic oven structure with time sharing control function according to the present invention; FIG.

Figure 4B is a timing chart of the time division control of the fourth embodiment of the electromagnetic cooker structure of the present invention;

FIG. 5 is a schematic circuit diagram of a fifth embodiment of an electromagnetic oven structure with time-sharing control function according to the present invention; FIG.

Figure 5 is a timing chart of the time division control of the fifth embodiment of the electromagnetic cooker structure of the present invention;

6 is a circuit diagram of a sixth embodiment of an electromagnetic oven structure having a time sharing control function according to the present invention;

Figure 6 is a timing chart of the time division control of the sixth embodiment of the electromagnetic cooker structure of the present invention;

7 is a circuit diagram of a seventh embodiment of an electromagnetic oven structure having a time sharing control function according to the present invention;

7 is a timing chart of the time-sharing control of the seventh embodiment of the electromagnetic cooker structure of the present invention; and

The eighth figure is a flow chart of the operation method of the electromagnetic cooker structure with the time division control function of the present invention.

Vin. . . Input voltage

S21. . . First switch unit

S22. . . Second switching unit

S23. . . Third switch unit

S24. . . Fourth switch unit

S25. . . Fifth switch unit

S26. . . Sixth switch unit

L21. . . First stove unit

L22. . . Second stove unit

L23. . . Third stove unit

L24. . . Fourth stove unit

Uc2. . . Controller unit

S21’. . . First control signal

S22’. . . Second control signal

S23’. . . Third control signal

S24’. . . Fourth control signal

S25’. . . Fifth control signal

S26’. . . Sixth control signal

Claims (19)

An electromagnetic stove structure with time-sharing control function includes:
a plurality of switching units;
a controller unit electrically connecting the switch units to provide on/off control for each of the switch units; and a plurality of stove units, each of the stove units corresponding to two of the switch units and The two switch units are electrically connected;
Wherein, the controller unit provides switching control for the switch unit adjacent to the stove unit in the working state; and provides conduction control for the switch unit not adjacent to the stove unit in the working state, to The working order of the stove units provides time-sharing control. For example, in the electromagnetic oven structure with the time-sharing control function of the first application of the patent scope, wherein the stove unit is a first stove unit and a second stove unit, the first stove unit corresponds to electricity Connecting a first switch unit and a second switch unit, and the second stove unit is electrically connected to the second switch unit and a third switch unit; the controller unit is coupled to the first switch unit The second switching unit provides switching control of signal level complementation, and provides conduction control to the third switching unit to control the first furnace unit to be in an operating state; the controller unit is configured to the second switching unit The third switching unit provides switching control of the signal level complementary, and provides conduction control to the first switching unit to control the second furnace unit to be in an operating state. The electromagnetic oven structure having the time-sharing control function according to the second aspect of the patent application, wherein the first furnace unit is electrically connected to a common connection between the first switch unit and the second switch unit; The unit is electrically connected to the common point of the second switch unit and the third switch unit. The electromagnetic oven structure with time-sharing control function according to item 2 of the patent application scope, wherein the controller unit provides alternate duty cycle control for the first stove unit and the second stove unit to switch the first furnace The working sequence of the unit and the second stove unit. The electromagnetic oven structure with time-sharing control function according to item 4 of the patent application scope, wherein when the first stove unit is in an operating state, the second stove unit is in a non-operating state; when the second stove unit is In the working state, the first stove unit is in a non-working state. The electromagnetic oven structure having the time-sharing control function according to the second aspect of the patent application, wherein the first switch unit and the second switch unit are electrically connected to a first diode unit, and the second switch unit Electrically connecting a second diode unit to the third switching unit; when the first switching unit and the second switching unit are in a zero voltage switching operation state, the first diode unit supplies current The path of the freewheeling, and when the second switching unit and the third switching unit are in a zero voltage operating state, the second diode unit provides a path for current freewheeling. For example, the electromagnetic cooker structure with the time-sharing control function of claim 1 of the patent scope, wherein each of the stove units is an induction cooker. For example, in the electromagnetic oven structure with the time-sharing control function, the first switching unit and the second switching unit are respectively a metal oxide semiconductor field effect transistor (MOSFET) and a double carrier. Junctional transistor (BJT) or an insulated gate bipolar transistor (IGBT). For example, in the electromagnetic oven structure with the time-sharing control function of claim 1, wherein when the stove units are a first stove unit and a second stove unit, the first stove unit is electrically Connecting a first auxiliary switching unit in series to form a first series path, the second furnace unit is electrically connected in series to a second auxiliary switching unit to form a second series path, and the first series path is connected to the second series The path is electrically connected in parallel to form a first main path; the first main path is electrically connected to a first switch unit and a second switch unit respectively; the controller unit is configured to the first switch unit The second switching unit provides switching control of the signal level complementary, and provides conduction control to the first auxiliary switching unit to control the first furnace unit to be in an operating state; the controller unit is configured to the first switching unit The second switching unit provides switching control of the signal level complementary, and the second auxiliary switching unit provides conduction control to control the second furnace unit to be in an operating state. For example, in the electromagnetic cooker structure with the time-sharing control function, the first main path is electrically connected to the common contact point of the first switch unit and the second switch unit. For example, in the electromagnetic cooker structure with the time-sharing control function of claim 9, wherein the controller unit alternates the duty cycle control of the first stove unit and the second stove unit to switch the first stove The working sequence of the unit and the second stove unit. For example, in the electromagnetic cooker structure with the time-sharing control function, the first auxiliary switch unit and the second auxiliary switch unit are respectively a bidirectional triode fluid (TRIAC) or a controlled rectifier. (SCR). An operation method of an electromagnetic cooker structure with time-sharing control function comprises the following steps:
(a) providing a plurality of switching units;
(b) providing a plurality of stove units;
(c) providing a controller unit; and
(d) the controller unit provides switching control for the switching unit adjacent to the furnace unit in the working state; and provides conduction control for the switching unit not adjacent to the furnace unit in the working state, The working order of the stove units provides time-sharing control. For example, in the application of the patent scope, the method for operating the induction cooker structure with time-sharing control function further includes:
(e) providing a plurality of flywheel diode units, the flywheel diode units providing a path for current freewheeling when the switching units are switched at zero voltage. The operating method of the induction cooker induction cooker structure according to claim 13 , wherein in the step (d), the controller unit provides alternate work for the first stove unit and the second stove unit Cycle control to switch the working sequence of the first stove unit and the second stove unit. For example, in the fifteenth item of the patent application, the method for operating the induction cooker structure with time-sharing control function, wherein when the first stove unit is in an operating state, the second stove unit is in a non-operating state; When the unit is in the working state, the first stove unit is in a non-working state. For example, in the method of claim 13, the method for operating the induction cooker structure with time-sharing control function, wherein in step (d), the controller unit provides switching to a switch unit adjacent to the stove unit in the working state. Control; and provide conduction control for a switching unit that is not adjacent to the stove unit in the operating state. For example, in the scope of claim 13 of the invention, the method for operating the induction cooker structure with time-sharing control function, wherein each of the furnace units is an induction cooker. For example, in the method of claim 13, the method for operating the induction cooker structure with time-sharing control function, wherein each of the switch units is a metal oxide semiconductor field effect transistor (MOSFET) and a double carrier junction transistor (BJT) or an insulated gate bipolar transistor (IGBT).