CN1787700A - Microwave oven turntable control device and control method thereof - Google Patents
Microwave oven turntable control device and control method thereof Download PDFInfo
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- CN1787700A CN1787700A CN 200510101884 CN200510101884A CN1787700A CN 1787700 A CN1787700 A CN 1787700A CN 200510101884 CN200510101884 CN 200510101884 CN 200510101884 A CN200510101884 A CN 200510101884A CN 1787700 A CN1787700 A CN 1787700A
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Abstract
The invention relates to a control device and a control method for a microwave oven turntable. The control device comprises a power supply circuit (1), a controller (2) and a switch circuit (3), wherein the output end of the power supply circuit (1) is respectively connected with the controller (2) and the switch circuit (3), the output end of the controller (2) is connected with the input end of the switch circuit (3), the output end of the switch circuit (3) is connected with a motor (4) for driving a turntable to rotate, and when the output end of the controller generates a current signal, the power supply circuit is conducted with the motor under the action of the switch circuit, and the motor runs; on the contrary, when the output end of the controller has no current signal, the power circuit and the motor are not conducted, and the motor stops running. The design is reasonable, and the structure is simple. The control method of the invention determines the rotation time of the motor by data processing and calculation according to the microwave heating time W input by the user, so that the position of the turntable when the motor stops rotating is the same as or different from the initial position.
Description
1, technical field:
The present invention is a kind of microwave oven turntable control device and control method thereof, belongs to the renovation technique of microwave oven turntable control device and control method thereof.
2, background technology:
All be provided with the rotating disk that supports the food container container in the furnace chamber of microwave oven, rotating disk is driven by drive motors, can rotate so that food is heated, and it is heated evenly.Yet, its weak point is, because not contact between the cycle of dial rotation time and dial rotation (dial rotation is between one all required time), that is: the dial rotation time integral multiple in dial rotation cycle not necessarily, make that when rotating disk stops operating the direction of direction of the container of putting when putting into is inconsistent on it.And the food container container, the general handle that conveniently picks and places container that all is provided with, so that such situation may occur: handle was towards fire door when container was put rotating disk into, and handle forwards other direction to when rotating disk stops operating, thereby inconvenient user takes out container, makes troubles for user's use.And the container of heat also may scald the consumer, is difficult to guarantee that the user's is safe in utilization.
3, summary of the invention:
The objective of the invention is to consider the problems referred to above and provide a kind of reasonable in design, microwave oven turntable control device simple in structure.
Another object of the present invention is to consider the problems referred to above and a kind of stop position that can control rotating disk arbitrarily is provided, thus user-friendly control method.
The theory diagram of microwave oven turntable control device of the present invention as shown in Figure 1, include power circuit (1), controller (2), switching circuit (3), wherein the output of power circuit (1) is connected with controller (2) and switching circuit (3) respectively, and the output of controller (2) is connected with the input of switching circuit (3), and the output of switching circuit (3) is connected with the motor (4) that drives the rotating disk rotation.
Said motor (4) is an AC synchronous motor.
Above-mentioned power circuit (1) includes transformer (T1), by (D3) (D4) rectification circuit of (D5) forming of diode (D2), filter circuit and the pressurizer (U2) (C2) formed by electric capacity (C1).
Above-mentioned controller (2) is single-chip microcomputer (U1).
Said switching circuit (3) comprises amplifying circuit (31) and relay (32), the input of amplifying circuit (31) is connected with the output of controller (2), the input of amplifying circuit (31) is connected with the coil of relay (32), and the contact switch of relay (32) is connected on the current supply circuit of motor (4).
Above-mentioned amplifying circuit (31) is triode (Q1), triode (Q1) base stage is connected with the output of single-chip microcomputer (U1) by resistance (R1), the grounded emitter of triode (Q1), triode (Q1) collector electrode is connected with power supply by diode (D1), the coil J1 of relay (32) is connected in parallel on the two ends of diode (D1), and the contact switch J1-1 of relay (32) is connected on the current supply circuit of motor (4).
Above-mentioned controller (2) is according to the microwave heating time W of user's input, carry out data processing and computing and decide the rotation time of motor (4), so that motor (4) when stopping operating the position of rotating disk identical with original position or inequality, the rotation time of motor (4) is controlled by controller (2), when the output of controller (2) produces current signal, because the amplification of amplifying circuit (31), produce bigger electric current, the contact switch J1-1 closure of relay (32), power circuit and motor (4) are conducted, motor (4) running; Otherwise when controller (2) when output does not have current signal, not conducting of amplifying circuit (31), the contact switch J1-1 of relay (32) is in off-state, not conducting of power circuit and motor (4), and motor (4) shuts down.
Data processing and operation method when above-mentioned controller (2) makes motor (4) position of rotating disk is identical with original position when stopping operating are: setting motor (4), to rotate all used time be T, microwave heating time W is divided by turntable motor T service cycle, remaining remainder is R, then following mode can be arranged:
(1) if R is zero, then the time t of motor (4) rotation just equals microwave heating time W;
(2) if R is non-vanishing, then with respect to microwave heating time W, motor shifts to an earlier date out-of-work time t1 and just equals R, perhaps can allow microwave heating stop after, motor (4) is rotated further, then the time t2 that is rotated further of motor (4) just is T-R.
Rotating disk control device of the present invention is owing to adopt the structure that includes power circuit, controller and switching circuit, the rotation time that drives the motor of dial rotation is controlled by controller, when the output of controller produces current signal, because the effect of switching circuit, power circuit and motor are conducted, motor running; Otherwise, when controller output end does not have current signal, power circuit and not conducting of motor, motor shuts down.It is reasonable in design, and is simple in structure.Control method of the present invention is by the microwave heating time W of controller according to user's input, carry out data processing and computing and decide the rotation time of motor, so that motor when stopping operating the position of rotating disk identical with original position or inequality, control method of the present invention can be controlled the stop position of rotating disk arbitrarily, thereby user-friendly.
4, description of drawings:
Fig. 1 is a schematic block circuit diagram of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
5, embodiment:
Embodiment:
The theory diagram of microwave oven turntable control device of the present invention as shown in Figure 1, include power circuit 1, controller 2, switching circuit 3, wherein the output of power circuit 1 is connected with controller 2 and switching circuit 3 respectively, and the output of controller 2 is connected with the input of switching circuit 3, and the output of switching circuit 3 is connected with the motor 4 that drives the rotating disk rotation.In the present embodiment, said motor 4 is an AC synchronous motor.
Circuit theory diagrams of the present invention as shown in Figure 2, the rectification circuit that above-mentioned power circuit 1 includes transformer T1, is made up of diode D2, D3, D4, D5, the filter circuit and the pressurizer U2 that form by capacitor C 1, C2.In the present embodiment, above-mentioned controller 2 is single-chip microcomputer U1.Said switching circuit 3 comprises amplifying circuit 31 and relay 32, the input of amplifying circuit 31 is connected with the output of controller 2, the input of amplifying circuit 31 is connected with the coil of relay 32, and the contact switch of relay 32 is connected on the current supply circuit of motor 4.
Above-mentioned amplifying circuit 31 is triode Q1, triode Q1 base stage is connected with the output of single-chip microcomputer U1 by resistance R 1, the grounded emitter of triode Q1, triode Q1 collector electrode is connected with power supply by diode D1, the coil J1 of relay 32 is connected in parallel on the two ends of diode D1, and the contact switch J1-1 of relay 32 is connected on the current supply circuit of motor 4.
Control method of the present invention, controller 2 is according to the microwave heating time W of user's input, carry out data processing and computing and decide the rotation time of motor 4, so that motor 4 when stopping operating the position of rotating disk identical with original position or inequality, the rotation time of motor 4 is by controller 2 controls, when the output of controller 2 produces current signal, because the amplification of amplifying circuit 31, produce bigger electric current, the contact switch J1-1 closure of relay 32, power circuit and motor 4 are conducted, motor 4 runnings; Otherwise, when controller 2 outputs do not have current signal, amplifying circuit 31 not conductings, the contact switch J1-1 of relay 32 is in off-state, power circuit and motor 4 not conductings, motor 4 shuts down.
Data processing and operation method when the position of rotating disk was identical with original position when above-mentioned controller 2 stopped operating motor 4 are: setting 4 one all used times of rotation of motor is T, microwave heating time W is divided by turntable motor T service cycle, remaining remainder is R, then following mode can be arranged:
(1) if R is zero, then the time t of motor (4) rotation just equals microwave heating time W;
(2) if R is non-vanishing, then with respect to microwave heating time W, motor shifts to an earlier date out-of-work time t1 and just equals R, perhaps can allow microwave heating stop after, motor 4 is rotated further, then the time t2 that is rotated further of motor 4 just is T-R.
When the present invention is used for microwave oven, after connecting external power source, after transformation by power circuit 1, the rectified action, can obtain two kinds of voltages, present embodiment is 12V and 5V, wherein the voltage of 12V can be switched on the relay 32 of switching circuit 3, and the voltage of 5V is communicated on the controller, powers to controller.When the output of controller 2 produces current signal, because the amplification of amplifying circuit 31 produces bigger electric current, the contact switch J1-1 closure of relay 32, power circuit and motor 4 are conducted, motor 4 runnings; Otherwise, when controller 2 outputs do not have current signal, amplifying circuit 31 not conductings, the contact switch J1-1 of relay 32 is in off-state, power circuit and motor 4 not conductings, motor 4 shuts down.
Claims (8)
1, a kind of microwave oven turntable control device, it is characterized in that including power circuit (1), controller (2), switching circuit (3), wherein the output of power circuit (1) is connected with controller (2) and switching circuit (3) respectively, and the output of controller (2) is connected with the input of switching circuit (3), and the output of switching circuit (3) is connected with the motor (4) that drives the rotating disk rotation.
2, microwave oven turntable control device according to claim 1 is characterized in that said motor (4) is an AC synchronous motor.
3, microwave oven turntable control device according to claim 1, it is characterized in that above-mentioned power circuit (1) include transformer (T1), by (D3) (D4) rectification circuit of (D5) forming of diode (D2), filter circuit and the pressurizer (U2) (C2) formed by electric capacity (C1).
4, microwave oven turntable control device according to claim 1 is characterized in that above-mentioned controller (2) is a single-chip microcomputer (U1).
5, microwave oven turntable control device according to claim 1, it is characterized in that said switching circuit (3) comprises amplifying circuit (31) and relay (32), the input of amplifying circuit (31) is connected with the output of controller (2), the input of amplifying circuit (31) is connected with the coil of relay (32), and the contact switch of relay (32) is connected on the current supply circuit of motor (4).
6, microwave oven turntable control device according to claim 5, it is characterized in that above-mentioned amplifying circuit (31) is a triode (Q1), triode (Q1) base stage is connected with the output of single-chip microcomputer (U1) by resistance (R1), the grounded emitter of triode (Q1), triode (Q1) collector electrode is connected with power supply by diode (D1), the coil J1 of relay (32) is connected in parallel on the two ends of diode (D1), and the contact switch J1-1 of relay (32) is connected on the current supply circuit of motor (4).
7, control method according to the described microwave oven turntable control device of claim 1, it is characterized in that the microwave heating time W of above-mentioned controller (2) according to user's input, carry out data processing and computing and decide the rotation time of motor (4), so that motor (4) when stopping operating the position of rotating disk identical with original position or inequality, the rotation time of motor (4) is controlled by controller (2), when the output of controller (2) produces current signal, because the amplification of amplifying circuit (31), produce bigger electric current, the contact switch J1-1 closure of relay (32), power circuit and motor (4) are conducted, motor (4) running; Otherwise when controller (2) when output does not have current signal, not conducting of amplifying circuit (31), the contact switch J1-1 of relay (32) is in off-state, not conducting of power circuit and motor (4), and motor (4) shuts down.
8, the control method of microwave oven turntable control device according to claim 7, data processing and operation method when it is characterized in that making motor (4) by above-mentioned controller (2) position of rotating disk is identical with original position when stopping operating are: setting motor (4), to rotate all used time be T, microwave heating time W is divided by turntable motor T service cycle, remaining remainder is R, then following mode can be arranged:
(1) if R is zero, then the time t of motor (4) rotation just equals microwave heating time W;
(2) if R is non-vanishing, then with respect to microwave heating time W, motor shifts to an earlier date out-of-work time t1 and just equals R, perhaps can allow microwave heating stop after, motor (4) is rotated further, then the time t2 that is rotated further of motor (4) just is T-R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101018840A CN100512574C (en) | 2005-11-30 | 2005-11-30 | Control method of microwave oven turntable control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101018840A CN100512574C (en) | 2005-11-30 | 2005-11-30 | Control method of microwave oven turntable control device |
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| Publication Number | Publication Date |
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| CN1787700A true CN1787700A (en) | 2006-06-14 |
| CN100512574C CN100512574C (en) | 2009-07-08 |
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| CNB2005101018840A Active CN100512574C (en) | 2005-11-30 | 2005-11-30 | Control method of microwave oven turntable control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327878A (en) * | 2017-07-21 | 2017-11-07 | 广东美的厨房电器制造有限公司 | Micro-wave oven zero load detection means, method and micro-wave oven |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950019487A (en) * | 1993-12-30 | 1995-07-24 | 이헌조 | Microwave turntable revolving device and method |
| KR0162389B1 (en) * | 1995-08-14 | 1999-01-15 | 구자홍 | Power relay control method of microwave oven |
| KR100200901B1 (en) * | 1997-07-25 | 1999-06-15 | 윤종용 | Control circuit of turn table for microwave oven |
| CN2312413Y (en) * | 1997-07-30 | 1999-03-31 | 沈阳信息技术研究所 | Continuous power adjustable microwave stove |
| CN2338650Y (en) * | 1998-07-21 | 1999-09-15 | 沈阳信息技术研究所 | High frequency time base continuous microwave heating apparatus |
| KR100453242B1 (en) * | 2002-10-10 | 2004-10-15 | 삼성전자주식회사 | Microwave oven and control method thereof |
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2005
- 2005-11-30 CN CNB2005101018840A patent/CN100512574C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327878A (en) * | 2017-07-21 | 2017-11-07 | 广东美的厨房电器制造有限公司 | Micro-wave oven zero load detection means, method and micro-wave oven |
| CN107327878B (en) * | 2017-07-21 | 2020-03-31 | 广东美的厨房电器制造有限公司 | Microwave oven no-load detection device and method and microwave oven |
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| CN100512574C (en) | 2009-07-08 |
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Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
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Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Penglai Road, Beijiao Town, Foshan District, Guangdong, China, Patentee before: Midea Group |