CN101737820A - Energy and electricity saving microwave oven - Google Patents
Energy and electricity saving microwave oven Download PDFInfo
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- CN101737820A CN101737820A CN200810153164A CN200810153164A CN101737820A CN 101737820 A CN101737820 A CN 101737820A CN 200810153164 A CN200810153164 A CN 200810153164A CN 200810153164 A CN200810153164 A CN 200810153164A CN 101737820 A CN101737820 A CN 101737820A
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Abstract
The invention discloses an energy and electricity saving microwave oven, which is provided with a display screen for displaying time, wherein the display screen comprises a power supply circuit and a display circuit. Compared with the conventional microwave oven, the energy and electricity saving microwave oven can realize the adjustment on the brightness of the display screen of the microwave oven in a standby state and a working state by adjusting the power supply voltage of the display circuit of the display screen to ensure that the brightness of the display screen is reduced when the microwave oven is in the standby state, the power of the microwave oven in the standby state is reduced and the aim of saving energy is realized, so the energy and electricity saving microwave oven is significant for productive practices.
Description
Technical field
The present invention relates to field of energy-saving technology, particularly relate to a kind of micro-wave oven of energy saving.
Background technology
Micro-wave oven is to produce microwave by electric current, and microwave irradiation surface of heating object in the cavity is come device that article are heated.As everyone knows, micro-wave oven is a kind of modernization cooking kitchen range with microwave heating of food.The microwave that it adopted is a kind of electromagnetic wave.This electromagnetic energy is not only much bigger than common radio wave, but also characteristics are arranged very much, and microwave at a touch metal just reflects, and metal has no idea to absorb or conduct it at all; Microwave can pass insulating materials such as glass, pottery, plastics, but can consumed energy; And contain the food of moisture, and microwave not only can not see through, and its energy can be absorbed on the contrary.Based on these characteristics, micro-wave oven is heat food well, has obtained utilization widely in daily life.
At present, as shown in Figure 1, micro-wave oven generally includes: comprise the body 10 of front casing 11, shell 12 and outside framework 13, form the cavity 20 of culinary art chamber, and the inner electric control chamber 30 that various electric components are installed.
Described electric component comprises: be used to generate the magnetron 31 of microwave, be used for providing to magnetron 31 high-tension transformer 32 of high pressure, and be used for blowing fan 33 that body 10 inner various electric components are cooled off.
To come cooking food can only be that the temperature of food is risen in view of depending merely on microwave, therefore usually as shown in Figure 2, the heater of being made by heating tube, the auxiliary heating source of conduct uses 40 is installed on microwave oven cavity 20 tops, by heater 40, food was toasted as the quilt fire, thereby increase appetite of people, in addition, when utilizing heating using microwave, drive the heater 40 that uses as auxiliary heating source, can shorten the cooking time of food.
In order to realize that the time of heating using microwave is controlled, existing micro-wave oven has been provided with timing function.In order to allow the micro-wave oven user recognize the current time simultaneously, developed a kind of micro-wave oven that has clock (clock) function and timing function simultaneously at present.
This micro-wave oven with clock (clock) function and timing function is when holding state, can show the time, since micro-wave oven when standby when working the brightness of display screen the same, this makes the power consumption of micro-wave oven when holding state also very big, and the user need not to pay close attention to the time of micro-wave oven under holding state always, brightness requirement to time display screen is not high, has therefore caused the invisible waste of electric energy.
Summary of the invention
In view of this, the micro-wave oven that the purpose of this invention is to provide a kind of energy saving, compare with existing micro-wave oven, by regulating the supply voltage of display screen display circuit, realization is adjusted the brightness of the microwave oven display-screen under holding state and duty, makes the brightness of micro-wave oven display screen when holding state reduce, thereby reduces the holding state power of micro-wave oven, realize the purpose of energy savings, be of great practical significance.
For this reason, the invention provides a kind of micro-wave oven of energy saving, this micro-wave oven is provided with the display screen that carries out time showing, and this display screen includes power supply circuits and display circuit, and described power supply circuits comprise:
Bridge rectifier, described bridge rectifier one end is connected with the secondary output end of transformer, its other end is connected by the positive pole of resistance R 06 with electrochemical capacitor C06, the positive pole of described electrochemical capacitor C06 also links to each other with the colelctor electrode of triode Q07, the positive pole of described electrochemical capacitor C06 also links to each other with the colelctor electrode of triode Q07, the base stage of triode Q07 links to each other with Zener diode ZD1, Zener diode ZD1 connects with ZD2, the emitter stage of triode Q07 links to each other with the positive pole of another electrochemical capacitor C07, Zener diode ZD1 links to each other with the colelctor electrode of triode Q08 with node between the ZD2, the grounded emitter of triode Q08, its base stage is connected with Zener diode ZD3 with control chip simultaneously;
The display circuit of display screen also is connected in described electrochemical capacitor C07 two ends.
Preferably, described bridge rectifier is connected to form by bridge-type by four diode D06, D07, D09, D08, and the secondary output end of described transformer is connected with node between diode D06, the D08.
Preferably, also include resistance R 06, an end of this resistance R 06 is connected on the node between described diode D07 and the D09, and the other end links to each other with the positive pole of electrochemical capacitor C06 and the colelctor electrode of triode Q07 simultaneously.
Preferably, also include resistance R 07, these resistance R 07 1 ends are connected in the colelctor electrode of triode Q07, and the other end and the base stage of triode Q07 link to each other with node between the Zener diode ZD1.
Preferably, described control chip is used for when client operating micro-wave oven or micro-wave oven action, and low level of control chip output when the micro-wave oven standby reaches the scheduled time, is exported a high level.
Preferably, the described scheduled time is 5 minutes.
Preferably, described control chip is the micom chip.
Preferably, described four diode D06, D07, D08, D09 are 4002 type diodes, the resistance value of resistance R 06 is 10Q, capacitor C 06 is the electrochemical capacitor of 470 μ F/25V, and capacitor C 07 is the electrochemical capacitor of 100 μ F/10V, and the resistance of resistance R 07 is 1K ohm, above-mentioned triode Q07 is the triode of C3202 model, the voltage of voltage regulation of Zener diode ZD1, ZD2 is 2.7V, and the voltage of voltage regulation of Zener diode ZD3 is 2V, and triode Q08 is the triode of C105 model.
By above technical scheme provided by the invention as seen, the present invention proposes a kind of micro-wave oven of energy saving, compare with existing micro-wave oven, by regulating the supply voltage of display screen display circuit, realization makes the brightness of micro-wave oven display screen when holding state reduce so that the brightness of the microwave oven display-screen under holding state and duty is adjusted, thereby reduces the holding state power of micro-wave oven, realize the purpose of energy savings, be of great practical significance.
Description of drawings
Fig. 1 is the exploded perspective view of common microwave stove structure;
Fig. 2 is the schematic diagram of display screen power supply circuits in the micro-wave oven of a kind of energy saving provided by the invention.
The specific embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 2 is the schematic diagram of display screen power supply circuits in the micro-wave oven of a kind of energy saving provided by the invention.
Referring to Fig. 2, the invention provides a kind of micro-wave oven of energy saving, this micro-wave oven is provided with the display screen that carries out time showing, this display screen includes power supply circuits and display circuit, these display screen power supply circuits include: bridge rectifier, described bridge rectifier one end is connected with the secondary output end of transformer, its other end is connected by the positive pole of resistance R 06 with electrochemical capacitor C06, the positive pole of described electrochemical capacitor C06 also links to each other with the colelctor electrode of triode Q07, the base stage of described triode Q07 links to each other with Zener diode ZD1, Zener diode ZD1 connects with ZD2, the emitter stage of triode Q07 links to each other with positive pole with another electrochemical capacitor C07, the display circuit of display screen (V Disp) is connected in parallel on described electrochemical capacitor C07 two ends, Zener diode ZD1 links to each other with the colelctor electrode of triode Q08 with node between the ZD2, the grounded emitter of triode Q08, its base stage is connected with Zener diode ZD3 with control chip simultaneously.
In the present invention, control whether conducting of Zener diode ZD2 by this triode Q08.
When control chip (micom chip as shown) output high level, the voltage that makes triode Q08 base stage is 2.0V, and triode Q08 conducting makes that ZD2 can not conducting, and is inoperative.
For triode Q07 is carried out voltage stabilizing, between the base stage of described triode Q07 and colelctor electrode, be connected with resistance R 07.
In the present invention, this bridge rectifier is connected to form by bridge-type by four diode D06, D07, D09, D08, the secondary output end of described transformer is connected with node between diode D06, the D08, among Fig. 26,7 promptly refer to the secondary output end of transformer, and the secondary output end of this transformer is used to export the 8.5V alternating voltage.
Exist in the present invention, also be provided with a resistance R 06, one end of this resistance R 06 is connected on the node between described diode D07 and the D09, the other end links to each other with the positive pole of electrochemical capacitor C06 and the colelctor electrode of triode Q07 simultaneously, be used for the voltage that output comes to bridge rectifier and carry out step-down, the voltage that makes bridge rectifier come out reduces a part.By electrochemical capacitor C06 the voltage through resistance R 06 output is carried out filtering.
Form a reduction voltage circuit by triode Q07, resistance R 07 and Zener diode ZD1, ZD2, this reduction voltage circuit is used for and will becomes 5V or 2.7V through the later voltage of electrochemical capacitor C06 filtering, these resistance R 07 1 ends are connected in the colelctor electrode of triode Q07, and the other end and the base stage of triode Q07 link to each other with node between the Zener diode ZD1.
Based on the purpose that the voltage of 5V or 2.7V is carried out further filtering, the emitter stage of triode Q07 links to each other with the positive pole of another electrochemical capacitor C07.
In the present invention, need to prove that as shown in Figure 2, four diode D06, D07, D08, D09 are 4002 type diodes, the resistance value of resistance R 06 is 10Q, C06 is the electrochemical capacitor of 470 μ F/25V, and C07 is the electrochemical capacitor of 100 μ F/10V, and the resistance of resistance R 07 is 1K ohm, above-mentioned triode Q07 is the triode of C3202 model, the voltage of voltage regulation of Zener diode ZD1, ZD2 is 2.7V, and the voltage of voltage regulation of Zener diode ZD3 is 2V, and Q08 is the triode of C105 model.
In the present invention, the secondary output end of transformer connects a bridge rectifier, connect an electrochemical capacitor C06 again, the colelctor electrode of triode Q07 links to each other with the positive pole of electrochemical capacitor C06, the base stage of triode Q07 links to each other with Zener diode ZD1, the emitter stage of triode Q07 links to each other with electrochemical capacitor C07, ZD1 connects with ZD2, the negative pole of Zener diode ZD2 links to each other with the colelctor electrode of triode Q08, the grounded emitter of triode Q08, base stage meets control chip (micom chip) and Zener diode ZD3 simultaneously, with the voltage of C07 both end voltage as display circuit.
The micro-wave oven that provides for the invention described above, when client operating micro-wave oven or micro-wave oven action, low level of control chip output, at this moment triode Q08 and ZD3 can't conductings, all conductings of ZD1 and ZD2, the series connection of the Zener diode of two 2.7V, C07 both end voltage 5V at this moment, the voltage of promptly supplying with display circuit remains 5V.
When micro-wave oven is placed 5 minutes or other Preset Times, in this time period, micro-wave oven is failure to actuate without any operation or micro-wave oven, when being micro-wave oven standby certain hour, owing to just need read clock, at this time can make high level of control chip output by programme-control, it is 2V that Zener diode ZD3 makes the voltage of Q08 base stage, because the colelctor electrode of Q08 links to each other with ZD1, therefore the colelctor electrode of Q08 voltage this moment is 2.7V, satisfy triode Q08 turn-on condition, the Q08 conducting, because the conducting of Q08, make that ZD2 can not conducting, ZD2 is inoperative, thus this moment electrochemical capacitor C07 both end voltage change into 2.7V, the 5V of the voltage of promptly supplying with display circuit during by working station of microwave oven becomes the 2.7V under the holding state, simultaneously, the display mode the when program in the control chip jumps to 2.7V makes display screen normally to show.
In sum, the present invention improves the hardware peripheral circuit of micro-wave oven, control by control chip, make that the demonstration of micro-wave oven when work is normal mode, the voltage of display screen display circuit is 5V, and the voltage of the display screen display circuit when holding state can be become 2.7V by the 5V under the normal mode, still can keep the display screen LED luminous, just brightness reduces, and does not influence client's use, thereby realizes the purpose of effective energy savings.
In view of micro-wave oven provided by the invention is compared with existing micro-wave oven, by regulating the supply voltage of display screen display circuit, realization is to adjust the brightness of the microwave oven display-screen under holding state and duty, make the brightness of micro-wave oven display screen when holding state reduce, thereby reduce the holding state power of micro-wave oven, realize the purpose of energy savings, be of great practical significance.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the micro-wave oven of an energy saving, this micro-wave oven is provided with the display screen that carries out time showing, and this display screen includes power supply circuits and display circuit, it is characterized in that, and described power supply circuits comprise:
Bridge rectifier, described bridge rectifier one end is connected with the secondary output end of transformer, its other end is connected by the positive pole of resistance R 06 with electrochemical capacitor C06, the positive pole of described electrochemical capacitor C06 also links to each other with the colelctor electrode of triode Q07, the positive pole of described electrochemical capacitor C06 also links to each other with the colelctor electrode of triode Q07, the base stage of triode Q07 links to each other with Zener diode ZD1, Zener diode ZD1 connects with ZD2, the emitter stage of triode Q07 links to each other with the positive pole of another electrochemical capacitor C07, Zener diode ZD1 links to each other with the colelctor electrode of triode Q08 with node between the ZD2, the grounded emitter of triode Q08, its base stage is connected with Zener diode ZD3 with control chip simultaneously;
The display circuit of display screen also is connected in described electrochemical capacitor C07 two ends.
2. micro-wave oven as claimed in claim 1 is characterized in that, described bridge rectifier is connected to form by bridge-type by four diode D06, D07, D09, D08, and the secondary output end of described transformer is connected with node between diode D06, the D08.
3. micro-wave oven as claimed in claim 2 is characterized in that, also includes resistance R 06, and an end of this resistance R 06 is connected on the node between described diode D07 and the D09, and the other end links to each other with the positive pole of electrochemical capacitor C06 and the colelctor electrode of triode Q07 simultaneously.
4. micro-wave oven as claimed in claim 3 is characterized in that, also includes resistance R 07, and these resistance R 07 1 ends are connected in the colelctor electrode of triode Q07, and the other end and the base stage of triode Q07 link to each other with node between the Zener diode ZD1.
5. as each described micro-wave oven in the claim 1 to 4, it is characterized in that described control chip is used for when client operating micro-wave oven or micro-wave oven action, low level of control chip output, when the micro-wave oven standby reaches the scheduled time, export a high level.
6. micro-wave oven as claimed in claim 5 is characterized in that, the described scheduled time is 5 minutes.
7. micro-wave oven as claimed in claim 5 is characterized in that, described control chip is the micom chip.
8. micro-wave oven as claimed in claim 4, it is characterized in that, described four diode D06, D07, D08, D09 are 4002 type diodes, the resistance value of resistance R 06 is 10Q, capacitor C 06 is the electrochemical capacitor of 470 μ F/25V, capacitor C 07 is the electrochemical capacitor of 100 μ F/10V, the resistance of resistance R 07 is 1K ohm, above-mentioned triode Q07 is the triode of C3202 model, the voltage of voltage regulation of Zener diode ZD1, ZD2 is 2.7V, the voltage of voltage regulation of Zener diode ZD3 is 2V, and triode Q08 is the triode of C105 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810153164 CN101737820B (en) | 2008-11-20 | 2008-11-20 | Energy and electricity saving microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810153164 CN101737820B (en) | 2008-11-20 | 2008-11-20 | Energy and electricity saving microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101737820A true CN101737820A (en) | 2010-06-16 |
| CN101737820B CN101737820B (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810153164 Expired - Fee Related CN101737820B (en) | 2008-11-20 | 2008-11-20 | Energy and electricity saving microwave oven |
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| CN (1) | CN101737820B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508508A (en) * | 2011-11-22 | 2012-06-20 | 昆明高驰科技有限公司 | Programmable power circuit of meter bus slave |
| CN109882890A (en) * | 2019-03-20 | 2019-06-14 | 广东美的厨房电器制造有限公司 | Microwave cooking equipment and kitchen control system |
| CN111550929A (en) * | 2019-02-12 | 2020-08-18 | 芜湖美的厨卫电器制造有限公司 | Water heater and display control device and method thereof |
| CN114343436A (en) * | 2021-12-31 | 2022-04-15 | 广东美的厨房电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59176778A (en) * | 1983-03-26 | 1984-10-06 | シャープ株式会社 | Fluorescent display tube power source unit for electronic range |
| JP2002278534A (en) * | 2001-03-19 | 2002-09-27 | Matsushita Electric Ind Co Ltd | Electrical apparatus |
| CN1980502A (en) * | 2005-12-06 | 2007-06-13 | 乐金电子(天津)电器有限公司 | Microwave oven display-screen optimized displaying method |
-
2008
- 2008-11-20 CN CN 200810153164 patent/CN101737820B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59176778A (en) * | 1983-03-26 | 1984-10-06 | シャープ株式会社 | Fluorescent display tube power source unit for electronic range |
| JP2002278534A (en) * | 2001-03-19 | 2002-09-27 | Matsushita Electric Ind Co Ltd | Electrical apparatus |
| CN1980502A (en) * | 2005-12-06 | 2007-06-13 | 乐金电子(天津)电器有限公司 | Microwave oven display-screen optimized displaying method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508508A (en) * | 2011-11-22 | 2012-06-20 | 昆明高驰科技有限公司 | Programmable power circuit of meter bus slave |
| CN111550929A (en) * | 2019-02-12 | 2020-08-18 | 芜湖美的厨卫电器制造有限公司 | Water heater and display control device and method thereof |
| CN111550929B (en) * | 2019-02-12 | 2022-10-04 | 芜湖美的厨卫电器制造有限公司 | Water heater and display control device and method thereof |
| CN109882890A (en) * | 2019-03-20 | 2019-06-14 | 广东美的厨房电器制造有限公司 | Microwave cooking equipment and kitchen control system |
| CN114343436A (en) * | 2021-12-31 | 2022-04-15 | 广东美的厨房电器制造有限公司 | Control method and device of cooking equipment, cooking equipment and readable storage medium |
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| Publication number | Publication date |
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| CN101737820B (en) | 2013-03-13 |
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