CN102980216B - Induction cooker architecture with time-sharing control function and its operation method - Google Patents

Abstract

An electromagnetic stove architecture with a time-sharing control function and an operation method thereof include 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 stove units corresponds to two of the switch units and is electrically connected to the two switch units. The controller unit provides switching control for the switch units adjacent to the stove units in a working state, and provides on control for the switch units not adjacent to the stove units in a working state, so as to provide time-sharing control for the working sequence of the stove units.

Description

Induction cooker architecture with time-sharing control function and its operation method

technical field

The present invention relates to a structure of an electromagnetic cooker and an operating method thereof, especially to a structure of an electromagnetic cooker with a time-sharing control function and an operating method thereof.

Background technique

The induction cooker, which is composed of power electronic circuits, uses the principle of electromagnetic induction heating to generate alternating magnetic fields through AC power sources of different frequencies, and then induces currents on the cooker due to the cutting of magnetic lines of force. The resistance loss inside the pot is converted into heat energy, thus achieving the purpose of heating. Due to the advantages of high thermal efficiency, convenient use, no smoke, no gas pollution, safety and sanitation, etc., it is very suitable for modern families.

For the application of multiple electromagnetic cookers, due to the increase in the number of used cookers, correspondingly, the switch components required for the conversion circuit of each electromagnetic cooker also increase accordingly. In this way, when the multi-electromagnetic cooker is in the working state, not only the control circuit is more complicated, but also more energy consumption of the switch components will be caused.

Therefore, how to design an induction cooker architecture with a time-sharing control function and its operation method, and use the control of the duty cycle ratio of the switch unit to realize an induction cooker with a time-sharing control function The structure, so as to simplify the control circuit and reduce the energy consumption caused by the number of switching components, is a major issue that the author of this project wants to overcome and solve.

Contents of the invention

In order to solve the above problems, an object of the present invention is to provide an induction cooker architecture with a time-sharing control function, so as to overcome the problems of the known technology.

Therefore, the framework of the electromagnetic oven with time-sharing control function of the present invention includes a plurality of switch units, a controller unit and a plurality of oven 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 stove units corresponds to two 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, so as to The working sequence of the stove units provides time-sharing control.

Another object of the present invention is to provide an operating method of an induction cooker framework with a time-sharing control function, so as to overcome the problems of the known technology.

Therefore, the operating method of the electromagnetic oven framework with time-sharing control function of the present invention includes the following steps: (a) providing a plurality of switch units; (b) providing a plurality of oven units; (c) providing a controller unit; and (d) 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, Time-sharing control is provided in order of operation of the furnace units.

In order to further understand the technology, means and effects that the present invention adopts to achieve the predetermined purpose, please refer to the following detailed description and accompanying drawings of the present invention. It is believed that the purpose, characteristics and characteristics of the present invention can be obtained from this For specific understanding, however, the accompanying drawings are only for reference and illustration, and are not intended to limit the present invention.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

1A is a schematic circuit diagram of the first embodiment of the structure of the electromagnetic oven with time-sharing control function of the present invention;

FIG. 1B is a timing diagram of the time-sharing control of the first embodiment of the framework of the electromagnetic oven according to the present invention;

2A is a schematic circuit diagram of the second embodiment of the framework of the electromagnetic oven with time-sharing control function of the present invention;

2B is a timing diagram of the time-sharing control of the second embodiment of the framework of the electromagnetic oven according to the present invention;

3A is a schematic circuit diagram of a third embodiment of the structure of the electromagnetic oven with time-sharing control function of the present invention;

FIG. 3B is a timing diagram of the time-sharing control of the third embodiment of the framework of the electromagnetic oven according to the present invention;

FIG. 4A is a schematic circuit diagram of a fourth embodiment of the framework of an electromagnetic oven with a time-sharing control function in the present invention;

4B is a timing diagram of the time-sharing control of the fourth embodiment of the framework of the electromagnetic oven according to the present invention;

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

FIG. 5B is a timing diagram of the time-sharing control of the fifth embodiment of the framework of the electromagnetic oven according to the present invention;

FIG. 6A is a schematic circuit diagram of a sixth embodiment of the framework of an electromagnetic oven with a time-sharing control function in the present invention;

6B is a timing diagram of the time-sharing control of the sixth embodiment of the framework of the electromagnetic oven according to the present invention;

FIG. 7A is a schematic circuit diagram of a seventh embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention;

7B is a timing diagram of the time-sharing control of the seventh embodiment of the framework of the electromagnetic oven according to the present invention; and

FIG. 8 is a flow chart of the operating method of the induction cooker architecture with time-sharing control function according to the present invention.

Reference sign

Vin input voltage

S11～S71 first switch unit

S12～S72 second switch 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'the third control signal

S14'～S54'the fourth control signal

S25'～S45'the fifth control signal

S26'～S26'the sixth control signal

G61’～G71’ first auxiliary control signal

G62’～G72’ second auxiliary control signal

G63’～G73’the third auxiliary control signal

G64’～G74’the fourth auxiliary control signal

t11～t71 first time

t12～t72 second time

t13～t73 third time

t24～t74 fourth time

t65～t75 fifth time

Steps from S100 to S500

Detailed ways

Hereby, the technical content and detailed description of the present invention are described as follows in conjunction with the accompanying drawings:

The invention discloses an electromagnetic cooker structure with a time-sharing control function, which is powered by an AC power supply. The structure of the electromagnetic oven 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 stove units corresponds to two 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, so as to The working sequence of the stove units provides time-sharing control.

As for the operation of the framework of the induction cooker with time-sharing control function, different embodiments will be used as examples for illustration.

Please refer to FIG. 1A , which is a schematic circuit diagram of the first embodiment of the structure of the electromagnetic oven with time-sharing control function according to the present invention. As shown in the figure, the structure of the electromagnetic oven mainly includes two oven units L11, L12 (that is, a first oven unit L11 and a second oven unit L12), four switch units S11-S14 (also That is, a first switch unit S11, a second switch unit S12, a third switch unit S13, a fourth switch unit S14) and a controller unit Uc1. Wherein, each of the switch units is a power transistor switch, which can be a metal oxide semiconductor field effect transistor (MOSFET), a bipolar junction transistor (BJT) or an insulated gate bipolar transistor (IGBT), but not with This is the limit. The first switch unit S11 is electrically connected to the second switch unit S12, and is further 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 is to provide signal level complementary switching control for the two corresponding switch units adjacent to the stove unit in the working state, and for the switches not adjacent to the stove unit in the working state The unit provides conduction control, so as to provide a time-sharing control for the first oven unit L11 and the second oven unit L12. As for the detailed operation of the time-sharing control, refer to FIG. 1B , which is a timing diagram of the time-sharing control of the first embodiment of the framework of the electromagnetic oven according to 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 switch unit S12 , the third switch unit S13 and the fourth switch unit S14 are turned on and off.

Take the time sequence diagram of time-sharing control as an example, assuming that the output powers of the first stove unit L11 and the second stove unit L12 are to be controlled to be 800 watts and 400 watts respectively, at this time, the time-sharing 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 switch and control the first switch unit S11 and the second switch unit S12 in a complementary manner 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; Both the third control signal S13 ′ and the fourth control signal S14 ′ are at a low level to turn off the third switch unit S13 and the fourth switch unit S14 respectively. Until a second time t12, the wheel outputs power for the second stove unit L12, while the first stove unit L11 is in a state of no output power. Therefore, the controller unit Uc1 starts to switch and control the third switch unit S13 and the fourth switch unit S14 in a complementary manner, that is, when the third control signal S13' is at a high level, the fourth control signal S14 ' is at a low level; The switch unit S11 and the second switch unit S12. Until a third time t13, the electromagnetic oven structure with time-sharing control function completes a cycle of time-sharing control, and, by controlling the working cycle of the first oven unit L11 and the second oven unit L12 The (dutycycle) ratio is 2:1, so that the output powers 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 schematic circuit diagram of a second embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention. As shown in the figure, the structure of the electromagnetic oven mainly includes four oven units L21-L24 (that is, a first oven unit L21, a second oven unit L22, a third oven unit L23 and a first oven unit L23). Four stove units 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 unit S25 and a sixth switch unit S26) and a controller unit Uc2. The first switch unit S21 is electrically connected to the second switch unit S22, and is further electrically connected to the first stove unit L21; the second switch unit S22 is electrically connected to the third switch unit S23, and , and then 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 further electrically connected to the third stove unit L23; the fifth switch unit S25 is electrically connected to the sixth switch unit S26 , and then electrically connected to the fourth stove unit L24.

The controller unit Uc2 is to provide signal level complementary switching control for the two corresponding switch units adjacent to the stove unit in the working state, and for the switches not adjacent to the stove unit in the working state unit, providing conduction control, so as to provide a time-sharing control for the first furnace unit L21 and the second furnace unit L22 and provide a time-sharing control for the third furnace unit L23 and the fourth furnace unit L24 time control. As for the detailed operation of the time-sharing control, please refer to FIG. 2B , which is a timing diagram of the time-sharing control of the second embodiment of the framework of the electromagnetic oven according to the present invention. The controller unit Uc2 is to generate 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 respectively 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 On and off.

Taking the time sequence diagram of time-sharing control as an example, assume that the output powers of the first stove unit L21 and the second stove unit L22 are to be controlled to be 400 watts and 800 watts respectively, and the third stove unit is controlled at the same time The output powers of L23 and the fourth stove unit L24 are 800 watts and 400 watts respectively. At this time, under the time-sharing control mechanism within one cycle, the output power of the first stove unit L21 is controlled first, and then the second stove unit L21 is controlled. The output power of the second stove unit L22, but not limited thereto. It is worth mentioning that at the same time, the output power of the third stove unit L23 can also be controlled first, and then the output power of the fourth stove unit L24 can be controlled, but not limited thereto. That is, the controller unit Uc2 can control the first oven unit L21 and the second oven unit L22 and control the third oven unit L23 and the fourth oven unit L24 simultaneously. In this way, the controller unit Uc2 can start to switch and control the first switch unit S21 and the second switch unit S22 in a complementary manner at a first time t21, and turn on the third switch unit S23 to control the first furnace 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' maintains a high level; otherwise Likewise, at this time, the second stove unit L22 is in a state of no output power. Under this time condition, the first stove unit L21 is the stove unit in the working state, and the second stove unit L22 is the stove unit in the non-working state, and in the following embodiments are all The same definition, so no more details. At the same time, the controller unit Uc2 can start to switch and control the fourth switch unit S24 and the fifth switch unit S25 in a complementary manner at the first time t21, and turn on the sixth switch unit S26 to control the third furnace The output power of the unit L23, 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' maintains a high level; otherwise Likewise, 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 furnace unit L22, while the first furnace unit L21 is in a state of no output power, and the third furnace unit L23 still maintains output power. Therefore, the controller unit Uc2 starts to switch and control the second switch unit S22 and the third switch unit S23 in a complementary manner, and turns on the first switch unit S21, that is, when the second control signal S22' is high level, the third control signal S23' is at a low level, while the first control signal S21' maintains a high level; and vice versa, to control the output power of the second stove unit L22, and the first The four switch units S24 and the fifth switch unit S25 still maintain complementary switching control, while the sixth switch unit S26 remains turned on, so as to control the third stove unit L23 to continuously output power. Until a third time t23, the wheel outputs power for the fourth furnace unit L24, while the third furnace unit L23 is in a state of no output power, and the second furnace unit L22 still maintains output power. Therefore, the controller unit Uc2 starts to switch and control the fifth switch unit S25 and the sixth switch unit S26 in a complementary manner, and turns on the fourth switch unit S24, that is, when the fifth control signal S25' is high level, the sixth control signal S26' is at a low level, and the fourth control signal S24' maintains a high level; and vice versa, to control the output power of the fourth stove unit L24, and the first The second switch unit S22 and the third switch unit S23 still maintain complementary switching control, while the first switch unit S21 remains turned on, so as to control the second stove unit L22 to continuously output power. Until a fourth time t24, the electromagnetic oven structure with time-sharing control function completes a cycle of time-sharing control, and, by controlling the working cycle of the first oven unit L21 and the second oven unit L22 The (dutycycle) 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, by controlling the duty cycle ratio of the third oven unit L23 and the fourth oven unit L24 to be 2:1, the output power of the third oven unit L23 and the fourth oven unit L24 is 800 watts and 400 watts respectively.

Please refer to FIG. 3A , which is a schematic circuit diagram of a third embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention. Wherein, this embodiment is substantially the same as the structure of the electromagnetic cooker of the above-mentioned second embodiment, the biggest difference is that the third embodiment further includes a plurality of diode units D31-D34 (that is, a first two-pole tube unit D31, a second diode unit D32, a third diode unit D33, and a fourth diode unit D34). Wherein, the first diode unit D31 is electrically connected between a first switch unit S31 and an electrical connection between a second switch unit S32 and a third switch unit S33; the second diode unit 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 Between the switch unit S34 and the electrical connection between 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 electrical connection of the fifth switch unit S35. Moreover, the time-sharing control sequence of this embodiment is the same as that of the second embodiment. Please refer to FIG. 3B , which is a time-sequence diagram of the time-sharing 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-S36 is connected in parallel with an inverting diode (not shown) and a parasitic capacitance (not shown), the parasitic effect caused by the characteristics of these components itself causes the induction cooker The switching units S31 - S36 with different structures will cause bad switching action and accumulate parasitic loss and aggravate the electromagnetic interference effect during the zero voltage switching operation. Therefore, in this embodiment, through the role of the flywheel diodes played by the diode units D31-D34, the current freewheeling path of the switch units S31-S36 in the zero-voltage switching operation is provided to improve the The second embodiment is the influence caused by parasitic effects.

Please refer to FIG. 4A , which is a schematic circuit diagram of a fourth embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention. As shown in the figure, the structure of the electromagnetic oven mainly includes three oven units L41-L43 (that is, a first oven unit L41, a second oven unit L42, and a third oven unit L43), five A switch unit S41～S45 (that is, a first switch unit S41, a second switch unit S42, a third switch unit S43, a fourth switch unit S44 and a fifth switch unit S45) and a controller unit Uc4. The first switch unit S41 is electrically connected to the second switch unit S42, and then electrically connected to the first stove unit L41; the second switch unit S42 is electrically connected to the third switch unit S43, and , and then 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 is to provide signal level complementary switching control for the two corresponding switch units adjacent to the stove unit in the working state, and for the switches not adjacent to the stove unit in the working state The unit provides conduction control, so as to provide a time-sharing control of the first oven unit L41 and the second oven unit L42 and provide a time-sharing control of the third oven unit L43. As for the detailed operation of the time-sharing control, please refer to FIG. 4B , which is a timing diagram of the time-sharing control of the fourth embodiment of the framework of the electromagnetic oven according to the present invention. The controller unit Uc4 is to generate 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' to respectively control The first switch unit S41 , the second switch unit S42 , the third switch unit S43 , the fourth switch unit S44 and the fifth switch unit S45 are turned on and off.

Taking the time sequence diagram of time-sharing control as an example, assume that the output powers of the first stove unit L41 and the second stove unit L42 are to be controlled to be 800 watts and 400 watts respectively, and the third stove unit is controlled at the same time The output power of L43 is 600 watts. At this time, under the time-sharing control mechanism in one cycle, first control the output power of the first stove unit L41, and then control the output power of the second stove unit L42, but not in this way limit. That is, the controller unit Uc4 can control the first oven unit L41 and the second oven unit L42 and control the third oven unit L43 at the same time. In this way, the controller unit Uc4 can start to switch and control the first switch unit S41 and the second switch unit S42 in a complementary manner at a first time t41, and turn on the third switch unit S43 to control the first furnace The output power of the unit L41, 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' maintains a high level; otherwise Likewise, 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 switch and control the fourth switch unit S44 and the fifth switch unit S45 in a complementary manner 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 stove unit L43 is in a state of no output power , and the first stove unit L41 still maintains the output power. Therefore, both the fourth control signal S44' and the fifth control signal S45' are at a low level to turn off the fourth switch unit S44 and the fifth switch unit S45 respectively, so as to control the third stove unit L43 to have no output. In addition, the first switch unit S41 and the second switch unit S42 still maintain complementary switching control, while the third switch unit S43 remains turned on, so as to control the first stove unit L41 to continuously output power. Until a third time t43, the wheel outputs power to the second furnace unit L42, while the first furnace unit L41 is in a state of no output power, and the third furnace unit L43 still maintains no output power. Therefore, the controller unit Uc4 starts to switch and control the second switch unit S42 and the third switch unit S43 in a complementary manner, and turns on the first switch unit S41, that is, when the second control signal S42' is high level, the third control signal S43' is at a low level, while the first control signal S41' maintains a high level; and vice versa, to control the output power of the second stove unit L42, and the first The fourth switch unit S44 and the fifth switch unit S45 still maintain cut-off control, so as to maintain the third stove unit L43 with no output power. Until a fourth time t44, the electromagnetic oven structure with time-sharing control function completes a cycle of time-sharing control, and, by controlling the working cycle of the first oven unit L41 and the second oven unit L42 The (dutycycle) ratio is 2:1, so that the output powers of the first stove unit L41 and the second stove unit L42 are 800 watts and 400 watts respectively. In addition, by controlling the duty cycle of the third oven unit L43 to be 50%, the output power of the third oven unit L43 is 600 watts.

Please refer to FIG. 5A , which is a schematic circuit diagram of a fifth embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention. As shown in the figure, the structure of the electromagnetic oven mainly includes three oven units L51-L53 (that is, a first oven unit L51, a second oven unit L52, and a third oven unit L53), four A switch unit S51˜S54 (namely 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 then electrically connected to the first stove unit L51; the second switch unit S52 is electrically connected to the third switch unit S53, and , and then electrically connected to the second stove unit L52; the third switch unit S53 is electrically connected to the fourth switch unit S54, and is then electrically connected to the third stove unit L53.

The controller unit Uc5 is to provide signal level complementary switching control for the two corresponding switch units adjacent to the stove unit in the working state, and for the switches not adjacent to the stove unit in the working state unit, providing conduction control, so as to provide a time-sharing control for the first oven unit L51, the second oven unit L52, and the third oven unit L53. As for the detailed operation of the time-sharing control, please refer to FIG. 5B , which is a timing diagram of the time-sharing control of the fifth embodiment of the framework of the electromagnetic oven according to 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 The second switch unit S52, the third switch unit S53 and the fourth switch unit S54 are turned on and off.

Taking the timing diagram of time-sharing control as an example, assume that the output powers of the first stove unit L51, the second stove unit L52 and the third stove unit L53 are to be controlled to be 600 watts, 400 watts and 200 watts respectively , at this time, under the time-sharing control mechanism within one cycle, first control the output power of the first stove unit L51, then control the output power of the second stove unit L52, and then control the output power of the third stove unit L53 power, but not limited thereto. That is, the controller unit Uc5 can control the first oven unit L51 , the second oven unit L52 or the third oven unit L53 at the same time. In this way, the controller unit Uc5 can start to switch and control the first switch unit S51 and the second switch unit S52 in a complementary manner 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 furnace 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 ' and the fourth control signal S54' maintain a high level; vice versa, at this time, both the second stove unit L52 and the third stove unit L53 are in a state of no output power. Until a second time t52, the wheel outputs power to the second stove unit L52, and both the first stove unit L51 and the third stove unit L53 are in a state of no output power. At this moment, the controller unit Uc5 starts to switch and control the second switch unit S52 and the third switch unit S53 in a complementary manner, and turns on the first switch unit S51 and the fourth switch unit S54 to control the second switch unit S52 and the third switch unit S53. The output power of the stove 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 S51' are at a high level. The signal S54' maintains a high level; vice versa, at this time, both the first oven unit L51 and the third oven unit L53 are in a state of no output power. Until a third time t53, the wheel outputs power to the third stove unit L53, and both the first stove unit L51 and the second stove unit L52 are in a state of no output power. At this time, the controller unit Uc5 starts to switch and control the third switch unit S53 and the fourth switch unit S54 in a complementary manner, and turns on the first switch unit S51 and the second switch unit S52 to control the third switch unit S53 and the fourth switch unit S54. The output power of the stove 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 S51' are at a high level. The signal S52' maintains a high level; vice versa, at this time, both the first oven unit L51 and the second oven unit L52 are in a state of no output power. Until a fourth time t54, the electromagnetic oven structure with time-sharing control function completes a period of time-sharing control, and, by controlling the first oven unit L51, the second oven unit L52 and the second oven unit The duty cycle ratio of the three stove units L53 is 3:2:1, so that the output powers 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 schematic circuit diagram of a sixth embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention. As shown in the figure, the structure of the electromagnetic oven mainly includes four oven units L61-L64 (that is, a first oven unit L61, a second oven unit L62, a third oven unit L63 and a first oven unit L63). Four stove units L64), two switch units S61, S62 (that is, a first switch unit S61 and a second switch unit S62), four auxiliary switch units G61-G64 (that is, a first auxiliary switch 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. Wherein, each auxiliary switch unit is a bidirectional triode thyristor (TRIAC) or a silicon controlled rectifier (SCR), but not limited thereto. The first auxiliary switch unit G61 is electrically connected in series with the first stove unit L61; the second auxiliary switch unit G62 is electrically connected in series with 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 with 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 is to provide signal level complementary switching control for the two corresponding switch units adjacent to the stove unit in the working state, and for the switches not adjacent to the stove unit in the working state unit, providing conduction control, so as to provide a time-sharing control for the first oven unit L61, the second oven unit L62, the third oven unit L63, and the fourth oven unit L64. As for the detailed operation of the time-sharing control, please refer to FIG. 6B , which is a timing diagram of the time-sharing control of the sixth embodiment of the framework of the electromagnetic oven according to 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 switch unit S61 and the second switch 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 control the first auxiliary control signal G64' respectively. Turning on and off of an auxiliary switch unit G61, the second auxiliary switch unit G62, the third auxiliary switch unit G63 and the fourth auxiliary switch unit G64

Taking the timing diagram of time-sharing control as an example, assume that the output powers of the first oven unit L61, the second oven unit L62, the third oven unit L63, and the fourth oven unit L64 are to be controlled as follows: 400 watts, 400 watts, 200 watts and 200 watts. At this time, under the time-sharing control mechanism within 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 control the output power of the third stove unit L63, and finally control the output power of the fourth stove unit L64, but not limited thereto. That is, the controller unit Uc6 can control the first oven unit L61 , the second oven unit L62 , the third oven unit L63 or the fourth oven unit L64 at the same time. In this way, the controller unit Uc6 can start to switch and control the first switch unit S61 and the second switch unit S62 in a complementary manner at a first time t61, and turn on the first auxiliary switch unit G61 to control the first switch unit S61. The output power of the stove 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. bit, and the remaining auxiliary control signals G62'~G64' maintain cut-off levels; are in the state of no output power. 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 all in a state of no output power . At this time, the controller unit Uc6 continues to switch and control the first switch unit S61 and the second switch unit S62 in a complementary manner, 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 These auxiliary control signals G61'~G64' maintain cut-off levels; vice versa, at this time, the first furnace unit L61, the third furnace unit L63 and the fourth furnace unit L64 are all in the state of no output power . 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 all in a state of no output power . At this time, the controller unit Uc6 continues to switch and control the first switch unit S61 and the second switch unit S62 in a complementary manner, and turns on the third auxiliary switch unit G63 to control the output power of the third stove 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 These auxiliary control signals G61'~G64' maintain cut-off levels; vice versa, at this time, the first furnace unit L61, the second furnace unit L62 and the fourth furnace unit L64 are all in the state of no output power . 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 all in a state of no output power . At this time, the controller unit Uc6 continues to switch and control the first switch unit S61 and the second switch unit S62 in a complementary manner, and turns on the fourth auxiliary switch unit G64 to control the output power of the fourth stove 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 These auxiliary control signals G61'～G63' maintain cut-off levels; vice versa, at this time, the first furnace unit L61, the second furnace unit L62 and the third furnace unit L63 are all in the state of no output power . Until a fifth time t65, the electromagnetic oven structure with time-sharing control function completes a period of time-sharing control, and, by controlling the first oven unit L61, the second oven unit L62, the second oven unit The duty cycle ratio of the third furnace unit L63 and the fourth furnace unit L64 is 2:2:1:1, so that the first furnace unit L61, the second furnace unit L62, the third furnace The output powers of the stove unit L63 and the fourth stove unit L64 are 400 watts, 400 watts, 200 watts and 200 watts respectively.

Please refer to FIG. 7A , which is a schematic circuit diagram of a seventh embodiment of the framework of an electromagnetic oven with a time-sharing control function according to the present invention. Wherein, the structure of this embodiment is substantially the same as that of the above-mentioned sixth embodiment, the biggest difference is only that the auxiliary switch units G71-G74 connected in series and the stove units L71-L74 are connected in parallel with each other. Then grounding, such a circuit structure mainly lies in the noise isolation effect provided by grounding, so that these auxiliary switch units G71-G74 can avoid interference from noise, and the auxiliary control unit generated by a controller unit Uc7 Signals G71'~G74' achieve correct control. Moreover, the time-sharing control sequence of this embodiment is the same as that of the sixth embodiment. Please refer to FIG. 7B , which is a time-sharing control sequence diagram of the seventh embodiment of the electromagnetic oven architecture of the present invention.

Please refer to FIG. 8 , which is a flow chart of the operating method of the electromagnetic oven architecture with time-sharing control function of the present invention. The operating method of the electromagnetic oven framework with time-sharing control function includes the following steps: providing a plurality of switch units (S100). Wherein, each of the switch units is a power transistor switch, which can be a metal oxide semiconductor field effect transistor (MOSFET), a bipolar junction transistor (BJT) or an insulated gate bipolar transistor (IGBT), but not with This is the limit. A plurality of stove units (S200) are provided. Wherein, each of the stove units is an induction cooker. A controller unit is provided (S300). The controller unit is to provide signal level complementary switching control for the two corresponding switch units adjacent to the stove unit in the working state, and for the switch unit not adjacent to the stove unit in the working state , providing conduction control, so as to provide time-sharing control for the working sequence of these stove units (S400). Wherein, the controller unit provides signal level signal level complementary switching control for the two corresponding switch units, and uses the control of the length of the working cycle, and cooperates with the control sequence of these furnace units to be alternately controlled to control the two corresponding switch units. The induction hob architecture provides time-sharing control. In addition, the operating method of the electromagnetic cooker with time-sharing control function further includes the following steps: providing a plurality of flywheel diode units to provide a current freewheeling path for the switching units during zero-voltage switching. Multiple auxiliary switch units are provided to provide time-sharing control of the induction cooker structure through the control of the working cycle. Wherein, each auxiliary switch unit is a bidirectional triode thyristor (TRIAC) or a silicon controlled rectifier (SCR).

In summary, the present invention has the following advantages:

1. By controlling the duty cycle ratio of the switch unit, the induction cooker architecture with time-sharing control function is realized to simplify the control circuit and reduce the energy consumption caused by the number of switch components;

2. By adding diode units to improve the parasitic loss and electromagnetic interference caused by the parasitic effects of the components when the switching units of the induction cooker structure operate in zero voltage switching; and

3. A ground connection is adopted through the structure of the induction cooker to improve the interference effect of noise on these auxiliary switch units.

The technical content and technical characteristics of the present invention have been disclosed above. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and All deformations should belong to the protection scope of the appended claims of the present invention.

Claims (19)

1. there is an electromagnetic oven framework for time-sharing function, comprise:

Multiple switch element;

One controller unit, for being electrically connected those switch elements, to provide the control of conducting and cut-off to each this switch element; And

Multiple stove and accessory unit, each this stove and accessory unit is corresponding two these switch elements and is electrically connected with these two switch elements;

It is characterized in that, this controller unit to the stove and accessory unit of a part the switch element that adjoins provide to switch and control, wherein the stove and accessory unit of this part is power output mode of operation; This controller unit to the stove and accessory unit of another part the switch element that adjoins provide conducting to control, wherein the stove and accessory unit of this another part is no-output power operational state; And within a work period, sequentially distribute switching control time and the conducting control time of those switch elements corresponding, sequentially provide Time-sharing control to those stove and accessory unit operations of power output mode of operation in power output state, make those stove and accessory unit power output to scale.

2. as claim 1, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, when those stove and accessory unit be one first stove and accessory unit and one second stove and accessory unit time, this the first stove and accessory unit is corresponding electric connection one first switch element and a second switch unit, and this second stove and accessory unit is corresponding this second switch unit of electric connection and one the 3rd switch element; This controller unit for providing the switching of signal level complementation to control to this first switch element and this second switch unit, and provides conducting to control to the 3rd switch element, to control this first stove and accessory unit for power output mode of operation; This controller unit for providing the switching of signal level complementation to control to this second switch unit and the 3rd switch element, and provides conducting to control to this first switch element, to control this second stove and accessory unit for power output mode of operation.

3. as claim 2, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, this first stove and accessory unit is be electrically connected on the common contact of this first switch element and this second switch unit; This second stove and accessory unit is be electrically connected on the common contact of this second switch unit and the 3rd switch element.

4. as claim 2, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, this controller unit is for providing alternation periodic Control, to switch the job order of this first stove and accessory unit and this second stove and accessory unit to this first stove and accessory unit and this second stove and accessory unit.

5. as claim 4, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, when this first stove and accessory unit is power output mode of operation, this second stove and accessory unit is no-output power operational state; When this second stove and accessory unit is power output mode of operation, this first stove and accessory unit is no-output power operational state.

6. as claim 2, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, be electric connection one first diode between this first switch element and this second switch unit, and be electric connection one second diode between this second switch unit and the 3rd switch element; When this first switch element and this second switch unit are zero voltage switching mode of operation, this first diode is for providing the path of electric current afterflow, and when this second switch unit and the 3rd switch element are no-voltage mode of operation, this second diode is for providing the path of electric current afterflow.

7. as claim 1, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, each this stove and accessory unit is an electromagnetic oven.

8. as claim 2, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, this first switch element and this second switch unit are for being respectively a metal oxide semiconductcor field effect transistor, a bipolar junction transistors or an igbt (IGBT).

9. as claim 1, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, when those stove and accessory unit be one first stove and accessory unit and one second stove and accessory unit time, this the first stove and accessory unit forms one first tandem paths for being electrically connected in series one first auxiliary switching element, this the second stove and accessory unit forms one second tandem paths for being electrically connected in series one second auxiliary switching element, and this first tandem paths and this second tandem paths are for be electrically connected in parallel formation one first main path again; This first main path is be electrically connected one first switch element and a second switch unit respectively again; This controller unit for providing the switching of signal level complementation to control to this first switch element and this second switch unit, and provides conducting to control to this first auxiliary switching element, to control this first stove and accessory unit for power output mode of operation; This controller unit is for providing the switching of signal level complementation to control to this first switch element and this second switch unit, and this provides conducting to control to this second auxiliary switching element, to control this second stove and accessory unit for power output mode of operation.

10. as claim 9, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, this first main path is be electrically connected on the common contact of this first switch element and this second switch unit.

11. as claim 9, this has the electromagnetic oven framework of time-sharing function, it is characterized in that, this controller unit is control this first stove and accessory unit and this second stove and accessory units alternately work period, to switch the job order of this first stove and accessory unit and this second stove and accessory unit.

12. as claim 9, this has the electromagnetic oven framework of time-sharing function, and it is characterized in that, this first auxiliary switching element and this second auxiliary switching element are for being respectively amphicheirality three pole thyristor or a thyristor.

13. 1 kinds of methods of operating with the electromagnetic oven framework of time-sharing function, comprise the following step:

A () provides multiple switch element;

B () provides multiple stove and accessory unit;

C () provides a controller unit; And

(d) this controller unit to the stove and accessory unit of a part the switch element that adjoins provide to switch and control, wherein the stove and accessory unit of this part is power output mode of operation; This controller unit to the stove and accessory unit of another part the switch element that adjoins provide conducting to control, wherein the stove and accessory unit of this another part is no-output power operational state; And within a work period, sequentially distribute switching control time and the conducting control time of those switch elements corresponding, sequentially provide Time-sharing control to those stove and accessory unit operations of power output mode of operation in power output state, make those stove and accessory unit power output to scale.

14. as claim 13, this has the method for operating of time-sharing function electromagnetic oven framework, more comprises:

E () provides multiple free-wheel diode unit, when those switch elements are in zero voltage switching, those free-wheel diode unit are for providing the path of electric current afterflow.

15. as claim 13, this has the method for operating of time-sharing function electromagnetic oven framework, it is characterized in that, when those stove and accessory unit be one first stove and accessory unit and one second stove and accessory unit time, in step (d), this controller unit is for providing alternation periodic Control, to switch the job order of this first stove and accessory unit and this second stove and accessory unit to this first stove and accessory unit and this second stove and accessory unit.

16. as claim 15, this has the method for operating of time-sharing function electromagnetic oven framework, and it is characterized in that, when this first stove and accessory unit is power output mode of operation, this second stove and accessory unit is no-output power operational state; When this second stove and accessory unit is power output mode of operation, this first stove and accessory unit is no-output power operational state.

17. as claim 13, this has the method for operating of time-sharing function electromagnetic oven framework, it is characterized in that, in step (d), this controller unit for the stove and accessory unit in power output mode of operation the switch element that adjoins, provide to switch and control; And to not with the stove and accessory unit in power output mode of operation the switch element that adjoins, provide conducting to control.

18. as claim 13, this has the method for operating of time-sharing function electromagnetic oven framework, and it is characterized in that, each this stove and accessory unit is an electromagnetic oven.

19. as claim 13, this has the method for operating of time-sharing function electromagnetic oven framework, and it is characterized in that, each this switch element is for being respectively a metal oxide semiconductcor field effect transistor, a bipolar junction transistors or an igbt.