CN101146380A - Compensation method for microwave oven dealing time - Google Patents
Compensation method for microwave oven dealing time Download PDFInfo
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- CN101146380A CN101146380A CNA2006100156443A CN200610015644A CN101146380A CN 101146380 A CN101146380 A CN 101146380A CN A2006100156443 A CNA2006100156443 A CN A2006100156443A CN 200610015644 A CN200610015644 A CN 200610015644A CN 101146380 A CN101146380 A CN 101146380A
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Abstract
The invention discloses a compensatory method for microwave cooking time, which includes the following steps in sequence: connecting with a power supply, and judging whether the output frequency exceeds a standard value range; if the output frequency is in the standard value range, performing normal cooking, otherwise setting correspondent flag bit based on the excessive frequency from the upper or lower limit and loading standard cooking data in; and calculating cooking time to be compensated based on the present frequency and the standard frequency, converting the cooking time to be compensated to a display time under unstable frequency condition, displaying the compensated cooking time, and providing the time to be compensated for the user by LED lamps. The invention provides a compensatory method which is easy to be realized and enables the product to be applied under unstable voltage.
Description
Technical field
The present invention relates to microwave oven, the compensation method of especially a kind of microwave oven dealing time.
Background technology
Microwave oven is that a kind of electric current that utilizes produces microwave, and microwave irradiation in food, to the device that food heats, heat food is surperficial and inner simultaneously, can the multiple food of fast cooking.
In order to allow microwave oven food be cooked, need to regulate power output by user's requirement with multiple cooking methods.As the power output adjusting device, adopt knob usually.
As shown in Figure 1, the microwave oven 1 of conventional art has rectangular shape, and the outward appearance of its end face and the left and right sides is formed by shell 10.
The inside bottom surface in barbecue chamber 20 is provided with the pallet 22 that can place food.Pallet 22 has disc-shape, allows food obtain uniform heating by rotation.The below in barbecue chamber 20 is provided with pallet motor (figure slightly), is used for Rotary tray 22.
The positive right side of face of microwave oven 1 is formed with control panel 30, together forms the outward appearance of microwave oven 1 with door 12.Control panel 30 is provided with knob 40, various button and display 32, is used to regulate the work of microwave oven 1.
Though diagram at the rear of control panel 30, is not formed with the distribution chamber.The distribution chamber is used to install the various electronic units of microwave oven 1, is formed between shell 10 inboards and barbecue chamber 20 lateral surfaces.
Generally, being constructed as follows of the mechanical type micro-oven that uses on family or shop and other places: front one side of microwave oven is formed with cooking room, and an other side is formed with the operating portion of operation microwave oven.Be provided with in the cooking room: the rotating disk of drive motors, rotation gratin, the magnetron of generation microwave.Operation panel and the timer of adjusting cooking time that drive motors, turntable, magnetron are arranged in the operating portion.Operation panel and timer are arranged on the control panel.
In above-mentioned microwave oven, after the user puts into cooking room inside with gratin, closing under the state to the doorstep, function timer is set the cooking time.The user sets the cooking time, then opens at the timer motor of timer inside, applies AC power supplies to magnetron simultaneously.Magnetron produces the microwave of heat food after receiving AC power supplies, utilize microwave heating food, begins common cooking action.Reach the setting-up time of timer, the timer motor will be switched off, and the power supply that puts on magnetron simultaneously also will be cut off, and interrupt cooking action.
The clock reference of present most of microwave oven is that mains frequency with electricity network is as benchmark.Be that AC signal transformation with electrical network (as 50Hz) is shaped as the external interrupt INT0 port that is input to chip behind the impulse wave on the circuit, external interrupt of trailing edge response of each pulse, program is counted input pulse, and the time of per like this 50 pulses experience just can be counted 1Sec.
But because regional disparity, some regional frequency is not the 50Hz of standard, causes above-mentioned clocking method true in these regional timing uncertainties like this, and the cooking effect is undesirable.
For example:.
If local mains frequency is 50Hz, then can be considered 1sec 1 second of microwave oven experience
If local mains frequency is 40Hz, then be extended for 1.25Sec 1 second of microwave oven experience
If local mains frequency is 60Hz, then shorten to 0.83Sec 1 second of microwave oven experience
Here be example with the puffed rice, suppose that the desirable cooking time is 1:00, if under the mains frequency condition of 40Hz, though microwave oven shows 1:00, the actual cooking time is 1:15 (60*1.25), and the situation that puffed rice overdoes can appear in the time cooking with such.
The microwave oven of current exploitation all is to utilize the frequency pulse to the electrical network input to carry out timing, though less expensive, when having greater difference, mains frequency and benchmark often cause the user to arranging being unsatisfied with of effect.The mains frequency clocking method of microwave oven utilization input exists its limitation.Owing to the power supply instability of supply network, cause client very dissatisfied in backward areas to the cooking effect of microwave oven.In order to ensure the cooking effect, existing microwave oven mostly can only be sold in large-and-medium size cities.
Summary of the invention
Technical problem to be solved by this invention is, the compensation method of a kind of microwave oven dealing time is provided, and the cooking time is compensated, and can be issued in the prerequisite that does not increase product cost and improve product reliability and adaptive faculty.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the compensation method of a kind of microwave oven dealing time may further comprise the steps successively:
1) energized judges whether incoming frequency exceeds the fiducial value scope;
2) if in the fiducial value scope, be written into benchmark cooking data, enter the normal cooking;
3) if exceed the fiducial value scope, the upper limit or the lower limit that exceed benchmark by frequency are put corresponding flag bit, and it is standby to be written into benchmark cooking data;
4) according to current frequency and reference frequency, calculate the cooking time that needs compensation, be demonstration time under the frequency labile state with the cooking time conversion of need compensation, show the cooking time after the compensation, the LED lamp prompting current employing make-up time of user.
The invention has the beneficial effects as follows: a kind of method of compensation is provided, has implemented simply product to be pushed to the market of more wide spread of voltage.
Description of drawings
Fig. 1 is that the microwave oven of prior art is always schemed.
Fig. 2 is the flow chart of the compensation method of microwave oven dealing time of the present invention.
Fig. 3 is a circuit diagram of realizing the compensation method of microwave oven dealing time of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Microwave oven of the present invention is identical with prior art, can be with reference to prior art, so no longer narration, the difference of the present invention and prior art is the compensation method that has increased the microwave oven dealing time, is described in detail below:
As shown in Figure 2, the compensation method of microwave oven dealing time of the present invention may further comprise the steps successively:
1) energized judges whether incoming frequency exceeds the fiducial value scope;
2) if in the fiducial value scope, be written into benchmark cooking data, enter the normal cooking;
3) if exceed the fiducial value scope, the upper limit or the lower limit that exceed benchmark by frequency are put corresponding flag bit, and flag bit is the mark of judging as program, writes down different marks respectively by the upper limit that exceeds benchmark or lower limit, and it is standby to be written into benchmark cooking data;
4) according to current frequency and reference frequency, calculate the cooking time that needs compensation, be demonstration time under the frequency labile state with the cooking time conversion of need compensation, show the cooking time after the compensation, the LED lamp prompting current employing make-up time of user.
Describe below by concrete data:
For example:
If local mains frequency is 50Hz, then can be considered 1sec 1 second of microwave oven experience
If local mains frequency is 40Hz, then be extended for 1.25Sec 1 second of microwave oven experience
If local mains frequency is 60Hz, then shorten to 0.83Sec 1 second of microwave oven experience
Here be example with the puffed rice, suppose that the desirable cooking time is 1:00, if under the mains frequency condition of 40Hz, though microwave oven shows 1:00, the actual cooking time is 1:15 (60*1.25), and the situation that puffed rice overdoes can appear in the time cooking with such.
Exceed in this frequency under the situation of reference frequency, compensation program is just being carried out (bearing) compensation to the cooking time, thereby reaches best cooking effect.The compensation back time is 0:48 (60*60/75), and microwave oven shows 0:48, actual act 1:00 like this.Consider the influence suitably correction of frequency change, thereby reach best cooking effect power
During 40Hz:
Do not add compensation program: show 1:00,
Actual act 1:25 puffed rice overdoes
Append compensation program: show 0:48,
Actual act 1:00 cooking is qualified
Consider that frequency can suitably revise power influences again,, can point out the current frequency of user to be in the very big state of deviation for averting misconceptions because demonstration time and standard time clock that the user sees have deviation.
Realize said method concrete control assembly structure chart as shown in Figure 3: after the AC signal of the secondary output of low-tension transformer is input to the base stage of triode Q20, chip receives the impulse wave by transistor collector output, chip interrupts for 1 time in each trailing edge response of impulse wave, reaches the purpose of counting and metering frequency.
Promote difficult problem at the microwave oven that the cooking poor effect causes to the low area of electrical network level, utilize the compensation method that proposes in this programme that the cooking time is compensated and can be issued to the effect that improves product reliability and adaptive faculty in the prerequisite that does not increase product cost.
In sum, among the embodiment that content of the present invention is not confined to, the knowledgeable people in the same area can propose other embodiment easily within technological guidance's thought of the present invention, but this embodiment comprises within the scope of the present invention.
Claims (1)
1. the compensation method of a microwave oven dealing time may further comprise the steps successively:
1) energized judges whether incoming frequency exceeds the fiducial value scope;
2) if in the fiducial value scope, be written into benchmark cooking data, enter the normal cooking;
3) if exceed the fiducial value scope, the upper limit or the lower limit that exceed benchmark by frequency are put corresponding flag bit, and it is standby to be written into benchmark cooking data;
4) according to current frequency and reference frequency, calculate the cooking time that needs compensation, be demonstration time under the frequency labile state with the cooking time conversion of need compensation, show the cooking time after the compensation, the LED lamp prompting current employing make-up time of user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100156443A CN101146380A (en) | 2006-09-14 | 2006-09-14 | Compensation method for microwave oven dealing time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100156443A CN101146380A (en) | 2006-09-14 | 2006-09-14 | Compensation method for microwave oven dealing time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101146380A true CN101146380A (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100156443A Pending CN101146380A (en) | 2006-09-14 | 2006-09-14 | Compensation method for microwave oven dealing time |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107454702A (en) * | 2017-08-29 | 2017-12-08 | 广东美的厨房电器制造有限公司 | Microwave heating control method and microwave heating equipment |
-
2006
- 2006-09-14 CN CNA2006100156443A patent/CN101146380A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107454702A (en) * | 2017-08-29 | 2017-12-08 | 广东美的厨房电器制造有限公司 | Microwave heating control method and microwave heating equipment |
| CN107454702B (en) * | 2017-08-29 | 2020-07-14 | 广东美的厨房电器制造有限公司 | Microwave heating control method and microwave heating device |
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Application publication date: 20080319 |