CN1956610A - Display power supply structure of color changed display of microwave oven - Google Patents
Display power supply structure of color changed display of microwave oven Download PDFInfo
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- CN1956610A CN1956610A CN 200510015636 CN200510015636A CN1956610A CN 1956610 A CN1956610 A CN 1956610A CN 200510015636 CN200510015636 CN 200510015636 CN 200510015636 A CN200510015636 A CN 200510015636A CN 1956610 A CN1956610 A CN 1956610A
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- power supply
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- microwave oven
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Abstract
This invention relates to a supply display structure with variable color display for micro-wave ovens including a display supply circuit and a digital analog conversion chip increased at the output end, which is connected with the digital-analog converter of an electronic display via four connectors, the conversion chip converts DC voltage at the output end of the display supply circuit to the voltage value corresponding to one of the four colors according to the set and inputs it to the electronic display. The voltage of the output end of the supply display circuit is 6V and the set voltages corresponding to the four colors converted by the chip include: blue 4V, green 4.5V, orange 5V and red 5.5V.
Description
Technical field
The present invention relates to microwave oven, particularly relate to the power supply architecture of microwave oven display unit.
Background technology
Microwave oven is the household electrical appliance cooker that utilizes high-frequency microwave that food is heated, and the frictional heat that produces by food molecule high vibration under the radiation effects of high-frequency microwave heats and cooking food.During the cooking in microwave oven operation, microwave penetration food, can inside and outside heating simultaneously, it is fast and use plurality of advantages easily to have an efficient height, speed.Therefore, microwave oven progressively becomes widely used domestic electric appliance.
The outward appearance of microwave oven is rectangular shape, forms furnace chamber in the housing.Top and the side of furnace chamber is provided with the internal structure of microwave oven, mainly contains magnetron, waveguide, control circuit device and blender etc.
Magnetron is the heart of microwave oven, is a kind of vacuum device, is used to produce the continuous microwave of heat food.The microwave that magnetron produces is carried and is radiated on the food in the furnace chamber by the waveguide of high-conductive metal material.Blender is made with the metal such as the magnadure plate that conduct electricity very well, intensity is high, just as screw, drive by small machine, in rotatablely moving, constantly change reflection angle to microwave radiation, thereby improve the distribution of microwave field in the furnace chamber, the food in the furnace chamber is heated evenly.The microwave oven that has is not provided with blender, and the rotating disk of support food is set in furnace chamber bottom, and the food that rotatablely moves with rotating disk also can be subjected to the even heating of microwave radiation.
The rectangular front of micro-wave oven casing is provided with fire door, display screen, operation keys.Fire door is the passage of placing food and take out food in the furnace chamber in furnace chamber, has enough mechanical strengths, and that long-term switch door uses is still indeformable, non-cracking and microwave leakage do not occur.The observation window of fiberglass is equipped with in fire door central authorities, accompanies intensive pore metallic shield net in the fiberglass, can see cooking status in the stove during use, can make the unlikely leakage of microwave again.
Control circuit device is arranged in the housing; comprise control circuit and respective electric parts thereof; mainly contain power controller, high-tension transformer, high-voltage capacitor, overheat protector, timer, interlocking switch and interlocking pilot switch, rotary tray motor (or agitator motor), fan electromotor etc., control circuit device guarantee and control the normal operation of whole microwave oven.
Computer control type microwave oven has diversified controlled function, can finish multiple work according to previously selected program.The controlled function of computer control type microwave oven mainly contains: cooks regularly and selects, and cooking power selection, microwave oven regularly starts, temperature control, two kinds of cooking operation program compatibilities, state demonstration and audible alarm etc.
Fig. 1 is general microwave oven structure schematic diagram.During the applied microwave stove, open the fire door 6 in micro-wave oven casing 1 front, food is put in the furnace chamber 8, behind the upper furnace door 6 of pass, the time that the microwave that magnetron 2 produces is set according to timer awards the food homogeneous radiations heating in the furnace chamber 8.After finishing cooking heating according to the predefined time, open fire door 6 again and take out foods.Display screen 11 numerals of the time of setting by the electronic console that housing front fire door 6 one sides are provided with show, make the user in time understand the cooking cooking process of food in the stove.
Fig. 2 is the microwave oven display part structure composition diagram of prior art.As shown in the figure, the display part is made up of display power supply and electronic console.The D06 of display power supply circuit 12～D09 bridge rectifier is changed into the 6V direct current with the 6V alternating current of transformer output, offer electronic console 15 through the magnitude of voltage as display power supply after the voltage stabilizing of C06, ZD2, through on display screen 11, showing the cooking cooking process of food in the stove behind the D-A converter 14 of electronic console 15.
But, only show a kind of respective digital of constant color on the microwave oven display-screen of above-mentioned prior art, can not carry out color according to user's hobby and select, influence the embodiment of the multiple function of microwave oven.
Summary of the invention
The microwave oven electronic console that the present invention is directed to prior art can not carry out Show Color according to user's hobby and select, display power supply structure to the display part improves, its objective is and between display power supply circuit output end and electronic console, set up the digital-to-analogue conversion chip, the difference that chip is set according to the user shows that now color adjusts input value, thereby shows that by showing of changing magnitude of voltage realizes changing electronic console and now show color.
The display power supply structure that microwave oven variable color involved in the present invention shows comprises display power supply circuit and the digital-to-analogue conversion chip of setting up at output thereof.The digital-to-analogue conversion chip is connected with the D-A converter of electronic console by four joints, and the digital-to-analogue conversion chip converts the direct voltage of display power supply circuit output end to the magnitude of voltage input electronic console of the corresponding color of one of four kinds of colors according to setting.The voltage of display power supply circuit output end is 6V, and the setting voltage of four kinds of color correspondences of digital-to-analogue conversion chip conversion is: blue 4V, green 4.5V, orange 5V, red 5.5V.
The display power supply structure that microwave oven variable color involved in the present invention shows, can carry out Show Color according to user's hobby selects, electronic console is shown with certain color in blue, green, orange or the redness, increase the effect of the multiple function of microwave oven.
Description of drawings
Fig. 1 is general microwave oven structure schematic diagram.
Fig. 2 is the microwave oven display part structure composition diagram of prior art.
Fig. 3 is the microwave oven display part structure composition diagram that the present invention relates to.
Main mark explanation among the figure:
1, housing 2, magnetron
3, waveguide 4, blender
5, reflecting plate 6, fire door
7, observation window 8, furnace chamber
9, operation keys 10, transformer
11, display screen 12, display power supply circuit
13, digital-to-analogue conversion chip 14, D-A converter
15, electronic console
Embodiment
Now the specific embodiment of the present invention is described further in conjunction with Fig. 3.As shown in the figure, the display power supply structure that microwave oven variable color involved in the present invention shows comprises display power supply circuit 12 and the digital-to-analogue conversion chip of setting up at output 13 thereof.Digital-to-analogue conversion chip 12 is connected with the D-A converter 14 of electronic console 15 by four joint P60, P61, P62, P63.
The D06 of display power supply circuit 12～D09 bridge rectifier is changed into the 6V direct current with the 6V alternating current of transformer output, as the reference voltage of digital-to-analogue conversion chip 12, digital-to-analogue conversion chip 12 converts the direct voltage of display power supply circuit output end to the magnitude of voltage input electronic console of the corresponding color of one of four kinds of colors according to setting after the process voltage stabilizing of C06, ZD2.The concrete setting voltage of four kinds of color correspondences is: blue 4V, green 4.5V, orange 5V, red 5.5V.
Claims (4)
1, a kind of display power supply structure of microwave oven variable color demonstration, comprise display power supply circuit and electronic console, it is characterized in that, set up the digital-to-analogue conversion chip at the display power supply circuit output end, the digital-to-analogue conversion chip is connected with the D-A converter of electronic console.
2, the display power supply structure of microwave oven variable color demonstration according to claim 1 is characterized in that, the digital-to-analogue conversion chip is connected with the D-A converter of electronic console by four joints.
3, the voltage conversion method of the display power supply circuit output end of the digital-to-analogue conversion chip of the display power supply structure of microwave oven variable color demonstration according to claim 1, it is characterized in that, voltage with the output of display power supply circuit is reference voltage, and making the voltage of the D-A converter of input electronic console is the magnitude of voltage of the corresponding color of one of four kinds of colors.
4, the voltage conversion method of the display power supply circuit output end of digital-to-analogue conversion chip according to claim 3, it is characterized in that the setting voltage of four kinds of color correspondences of digital-to-analogue conversion chip conversion is: blue 4V, green 4.5V, orange 5V, red 5.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015636 CN1956610A (en) | 2005-10-25 | 2005-10-25 | Display power supply structure of color changed display of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510015636 CN1956610A (en) | 2005-10-25 | 2005-10-25 | Display power supply structure of color changed display of microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1956610A true CN1956610A (en) | 2007-05-02 |
Family
ID=38063634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510015636 Pending CN1956610A (en) | 2005-10-25 | 2005-10-25 | Display power supply structure of color changed display of microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1956610A (en) |
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2005
- 2005-10-25 CN CN 200510015636 patent/CN1956610A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |