CN201897249U - Microwave oven capable of controlling frequency - Google Patents
Microwave oven capable of controlling frequency Download PDFInfo
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- CN201897249U CN201897249U CN2010206615399U CN201020661539U CN201897249U CN 201897249 U CN201897249 U CN 201897249U CN 2010206615399 U CN2010206615399 U CN 2010206615399U CN 201020661539 U CN201020661539 U CN 201020661539U CN 201897249 U CN201897249 U CN 201897249U
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- light wave
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Abstract
The utility model provides a microwave oven capable of controlling frequency, comprising a microwave oven mainbody which is formed by assembling an oven chamber, a shell, a food tray, a driving motor, a magnetic control pipe, a microwave antenna, a high-voltage transformer, a furnace door and a control device; and a power supply circuit of the control device is internally connected in series or in parallel with a switch device so as to control the power of a light wave component. The light wave component is arranged in a furnace chamber and comprises a light source, a light source reflector and a light wave controller. In the utility model, by additionally arranging the switch device in the power supply circuit, the light wave power can be continuously, flexibly and stably controlled at the power required by cooking; the heating firepower is moderate; furthermore, by the combination with the microwave and the common action of the two heating energies, the cooking speed can be increased, the cooking effect can be improved, and the following cooking effects can be achieved: the action time of the commercial electricity on a light wave pipe can be precisely controlled, the light wave power can be adjusted precisely, and simultaneously the light wave power with multi-level on power can be alternatively shifted by combining the intermittent delaying time, thus forming dynamic firepower. The microwave oven has the advantages of simple and reasonable structure, precision in control, wide application scope and long service life.
Description
Technical field
The utility model relates to a kind of micro-wave oven, particularly a kind of micro-wave oven with FREQUENCY CONTROL.
Background technology
The multifunction microwave oven of present band light wave heating, mostly the control of light wave is to adopt mechanical switch, behind switch connection, lightwave source is full power operation, and the duration and degree of heating control of light wave heating is difficult, overdoes easily, if adopt the batch (-type) heating, be easy to generate switching loss, the light wave efficiency of heating surface has very big loss, and this has all produced certain obstruction to the lifting of cooking efficiency.
Chinese patent literature CN101044797A discloses a kind of high-frequency heating power source on September 26th, 2007, it is characterized in that: drive magnetron by allowing thyristor to use commercial power execution HF switch to operate, when being provided for driving the DRIVE signal of first thyristor and second thyristor, the difference on the frequency (gradient) of phase place 0 to 90 being spent by the triangle wave generation circuit in the oscillating circuit offers the phase inverter operating frequency that is used for each commercial power phase place.After rectification, cut apart waveform, produce that circuit is provided with that the upper limit is clamped down on, lower limit is clamped down on and be formed for the modulation waveform of frequency modulation(PFM) control with the minimum of low-limit frequency equivalence by frequency modulation(PFM) according to commercial power.It is said that it passes through to optimize these combinations, suppresses generation of higher harmonic current, form the frequency modulation(PFM) waveform that can absorb the various scramblings such as the power supply (Vcc) of phase inverter main circuit component constant parameter and driving control IC unit simultaneously.But this structure is comparatively complicated, and the restriction of self structure, can not be applicable to have light wave heating micro-wave oven.Therefore, be necessary to be further improved and perfect.
The utility model content
The purpose of this utility model aims to provide a kind of micro-wave oven of band FREQUENCY CONTROL simple and reasonable, easy to use and with low cost, to overcome weak point of the prior art.
A kind of micro-wave oven by this purpose design with FREQUENCY CONTROL, comprise the micro-wave oven main body that furnace chamber, shell, meal tray, drive motors, magnetron, microwave antenna, high-tension transformer, fire door and control device are assembled, its architectural feature is to be connected in series in the power supply circuits of described control device or to be connected in parallel to switching device, with the power of control light wave assembly.
Described light wave assembly is arranged in the furnace chamber, and the light wave assembly comprises light source, light source reflector and light wave controller; Light source be arranged at the top of furnace chamber or furnace chamber left and right sides or the rear portion of furnace chamber; Light source is an optical wave tube.
Described light source reflector is the emission minute surface that has indent, and it sets firmly on the inwall of furnace chamber; Form a heating chamber between light source reflector and the furnace chamber, optical wave tube is placed in the heating chamber, optical wave tube respectively with switching device, power supply circuits for being connected in series; Switching device is relay or controllable silicon, and switching device is electrically connected with the light wave controller.
Described light wave controller comprises the chip that is used to detect the circuit of mains waveform and exports the switching device control signal, with the conducting of gauge tap device; One end and the power supply circuits of light wave controller are connected in series, and the other end of light wave controller is connected with switching device.
The utility model is by setting up switching device in power supply circuits, the control of light wave power can be continued, flexibly and be stabilized in the required power of the cooking, and the heating firepower is moderate, and by and the combination of microwave, cooking speed is accelerated in the acting in conjunction of two kinds of heat energy, promotes cooking effect; Reach the action time of accurate control civil power on optical wave tube, regulate light wave power accurately, can also the light wave power of multiple power shelves be switched in turn in conjunction with step change delay time simultaneously, form dynamic firepower cooking effect.It has simple and reasonable, as to control accurate, applied widely and long service life characteristics.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of an embodiment of the present utility model.
Fig. 2 is that the positive arc waveform of mains frequency and the square wave after the testing circuit conversion compare schematic diagram.
Among the figure: 1 is switching device, and 2 is optical wave tube, and 3 is the light wave controller, and z is a zero crossing.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1-Fig. 2, the micro-wave oven of this band FREQUENCY CONTROL comprises the micro-wave oven main body that furnace chamber and shell, meal tray, drive motors, magnetron, microwave antenna, high-tension transformer, fire door and control device are assembled.Meal tray is positioned in the furnace chamber, and is connected with drive motors.Form an assembling cavity between furnace chamber and the shell, microwave antenna, high-tension transformer and control device are fixedly arranged in the assembling cavity.
Be connected in series with switching device 1 in the power supply circuits of control device, see Fig. 1, power with control light wave assembly, its purpose is: a kind of accurate switch control is provided, the control of light wave power can be continued, flexibly and be stabilized in and cook required power, it is moderate to heat firepower, and by and the combination of microwave, cooking speed is accelerated in the acting in conjunction of two kinds of heat energy, promotes cooking effect.
The light wave assembly is arranged in the furnace chamber, and the light wave assembly comprises light source, light source reflector and light wave controller 3, and light source is arranged at the top of furnace chamber, and light source is an optical wave tube 2.Light source reflector is the emission minute surface that has indent, and it is fixedly arranged on the inwall of furnace chamber.Form a heating chamber between light source reflector and the furnace chamber, optical wave tube 2 is placed in the heating chamber, optical wave tube 2 respectively with switching device 1, power supply circuits for being connected in series.
Switching device 1 is a controllable silicon, and switching device 1 is electrically connected with light wave controller 3.One end and the power supply circuits of light wave controller 3 are connected in series, and the other end of light wave controller 3 is connected with switching device 1.Light wave controller 3 comprises the chip that is used to detect the circuit of mains waveform and exports switching device 1 control signal, with the conducting of gauge tap device 1.Its operation principle is: the circuit of detection mains waveform is converted to square wave with the sinusoidal waveform of mains frequency, the rising edge of square wave and trailing edge are respectively the starting point of the last lower half of mains waveform, see Fig. 2, chip circuit changes low by the square wave level at height, or low instantaneous trigger of changeing when high, the datum mark of a time control is provided to chip, this datum mark is the zero crossing z of corresponding civil power just also, after controlling this datum mark, postpone just actuating switch device 1 of certain hour, reach the action time of accurate control civil power on optical wave tube 2, regulate light wave power accurately, simultaneously can also be in conjunction with step delay time, the light wave power of multiple power shelves is switched in turn, form dynamic firepower cooking effect.
Claims (5)
1. micro-wave oven with FREQUENCY CONTROL, comprise the micro-wave oven main body that furnace chamber, shell, meal tray, drive motors, magnetron, microwave antenna, high-tension transformer, fire door and control device are assembled, it is characterized in that being connected in series in the power supply circuits of described control device or being connected in parallel to switching device (1), with the power of control light wave assembly.
2. according to the micro-wave oven of the described band FREQUENCY CONTROL of claim 1, it is characterized in that described light wave assembly is arranged in the furnace chamber, the light wave assembly comprises light source, light source reflector and light wave controller (3); Light source be arranged at the top of furnace chamber or furnace chamber left and right sides or the rear portion of furnace chamber; Light source is optical wave tube (2).
3. according to the micro-wave oven of the described band FREQUENCY CONTROL of claim 2, it is characterized in that described light source reflector is the emission minute surface that has indent, it sets firmly on the inwall of furnace chamber; Form a heating chamber between light source reflector and the furnace chamber, optical wave tube (2) is placed in the heating chamber, optical wave tube respectively with switching device (1), power supply circuits for being connected in series.
4. according to the micro-wave oven of claim 1 or 2 or 3 described band FREQUENCY CONTROL, it is characterized in that described switching device (1) is relay or controllable silicon, switching device is electrically connected with light wave controller (3).
5. according to the micro-wave oven of the described band FREQUENCY CONTROL of claim 4, it is characterized in that described light wave controller (3) comprises the chip that is used to detect the circuit of mains waveform and exports the switching device control signal, with the conducting of gauge tap device; One end and the power supply circuits of light wave controller are connected in series, and the other end of light wave controller is connected with switching device (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206615399U CN201897249U (en) | 2010-12-15 | 2010-12-15 | Microwave oven capable of controlling frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206615399U CN201897249U (en) | 2010-12-15 | 2010-12-15 | Microwave oven capable of controlling frequency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897249U true CN201897249U (en) | 2011-07-13 |
Family
ID=44255156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206615399U Expired - Lifetime CN201897249U (en) | 2010-12-15 | 2010-12-15 | Microwave oven capable of controlling frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10555384B2 (en) | 2016-04-15 | 2020-02-04 | Industrial Technology Research Institute | Modular microwave power supply |
-
2010
- 2010-12-15 CN CN2010206615399U patent/CN201897249U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10555384B2 (en) | 2016-04-15 | 2020-02-04 | Industrial Technology Research Institute | Modular microwave power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |