JP4613577B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device using a microcomputer.

  A conventional heating cooker, a so-called general microwave oven, has a configuration as shown in FIG. In the figure, a cooking chamber 2 is provided in the main body 1 of the heating cooker. The opening of the cooking chamber 2 is provided with a door 3 that can be opened and closed to put in and out the food in the cooking chamber 2, and on the front surface of the main body 1, an operation for selecting a menu, setting cooking time, and the like is performed. A display unit 5 and a display unit 5 for displaying menu contents are provided.

Moreover, in the conventional cooking device, it is considered that cooking is performed with an output of, for example, 800 W to shorten the cooking time. In the case of this configuration, an amount of electric power corresponding to the cooking output is lost by the high-pressure transformer and magnetron, and the high-pressure transformer and magnetron generate heat according to the cooking output. A cooling mechanism that uses a transformer, a magnetron, or the like, or forcibly blows cooling air to a high-pressure transformer, a magnetron, or the like has been strengthened (see, for example, Patent Documents 1 and 2).
Japanese Patent Laid-Open No. 2000-12111 JP 2002-190380 A

  However, as for the actual cooking content, most cooking time is 3 minutes or less. For this reason, the use of a temperature-rated high-pressure transformer, magnetron, etc. considering continuous cooking of 800 W, and the strengthening of the cooling mechanism have the problem of increasing waste in actual use and leading to cost increase. .

  This invention solves the said conventional subject, for example, provides the heating cooker which can cook at 800W, diverting the temperature-rated electric component and cooling mechanism corresponding to 700W continuous cooking. Objective.

In order to solve the above-described conventional problems, a heating cooker according to the present invention includes a cooking chamber in which a food item is stored, a magnetron that irradiates microwaves in the cooking chamber, and a power that lowers the radio wave output wattage by the magnetron. The power down means has an up / down timer, and the up / down timer is incremented by 1 every second when the radio wave output is ON, and maintains the value when the radio wave output during cooking is OFF. During cooking, the value is maintained for a certain period of time from the time when it is in a non-cooked state, and then subtracted by 1 every 1 second, and when the value becomes 0, it remains 0. The power down means, The magnetron is powered down when the value of the up / down timer exceeds a certain value .

  Thereby, for example, cooking can be performed at 800 W by diverting temperature-rated electrical components and cooling mechanisms corresponding to 700 W continuous cooking.

  The cooking device of the present invention can cook at 800 W by using temperature-rated electric parts and cooling mechanisms that are compatible with continuous cooking at 700 W, so that the cost of the parts can be reduced.

1st invention is equipped with the cooking chamber in which a cooking item is accommodated, the magnetron which irradiates a microwave in the said cooking chamber, and the power-down means which reduces the radio wave output wattage by the said magnetron, The said power-down means is up-down The up / down timer is incremented by 1 every second when the radio wave output is ON, retains the value when the radio wave output during cooking is OFF, and is fixed for a certain period of time from when the cooking state is not cooked. Holds the value, and is decremented by 1 every 1 second thereafter, and remains 0 when the value becomes 0. The power down means, when the value of the up / down timer exceeds a certain value, which was characterized by powering down the magnetron, for example by diverting the electrical components and the cooling mechanism of the temperature rating corresponding to the continuous cooking of 700 W 800 W Cooking can be performed.

The second invention is characterized in that the power-down means powers down the radio wave output wattage by turning on / off the radio wave, and can reduce the wattage of the radio wave while continuously turning on the radio wave. Not only inverter control but also a configuration in which radio waves are turned on / off by turning on / off a relay can be powered down.

A third invention is an input device operated by a user, comprising a recalculation means cooking time, determines the cooking time by cooking start when a user operates the input unit, when powered down by the power-down means, the cooked time recalculates the cooking time by recalculating means, which was characterized to be the same before and lowering the radio wave output wattage the amount of energy applied to the food during cooking, even cooked as has powered down By extending the time, the amount of energy given to the food can be made the same before and after the power-down, and the cooking result can be made the same.

The fourth invention comprises an input means operated by the user, a cooking time recalculating means, and a display means, and the cooking time is determined by the user operating the input means at the start of cooking. the time to calculate, if the calculated time is less than the cooking time, it is determined that the power-down, the display and the cooking time on the display means, the cooking course in the cooking time while the results calculate the cooking time based on Even if it is time auto cooking that displays cooking time from the start of cooking, the display of cooking time will not change during cooking when power down has started, so the user Power down can be performed without distrust.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a diagram of a heating cooker according to the first embodiment of the present invention.

  In FIG. 1, a microcomputer 6 (hereinafter referred to as a microcomputer) controls a magnetron 8 using a power-down means 7 and recalculates using a cooking time recalculating means 9 using a start key (not shown). It is the structure which judges.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the user selects auto cooking with a predetermined time by an input means (not shown), and starts cooking by pressing a start key. At that time, the microcomputer 6 determines whether the power down is necessary from the radio wave output integrated time T1, the radio wave suspension integrated time T2, and the cooking time. If it is determined that the power down is necessary, the cooking time recalculating means 9 causes the cooking time to be calculated. By recalculating and extending the cooking time, the same amount of energy as before the power down is given to the food.

  As a power down method, for example, the power down is realized by shortening the ON time of the radio wave, increasing the OFF time of the radio wave, or both.

(Embodiment 2)
FIG. 2 is a flowchart of the heating cooker according to the second embodiment of the present invention.

  First, in step S1, the microcomputer calculates a cooking time for the cooking selected by the user.

  Next, in step S2, a time until the radio wave output is equal to or greater than a certain value for powering down is calculated from the current up / down timer (UDT), and the time until powering down is obtained. The UDT is incremented by 1 every second when the radio wave is ON, and holds the value when the radio wave during cooking is OFF. In addition, during non-cooking, the value is maintained for a certain period of time after the non-cooking state is reached, and thereafter, 1 is subtracted every 1 second. When it becomes 0, it remains 0. Specifically, for example, when the current UDT = 150 and a constant value to power down = 600, the time calculation formula Tpd until the power down when the radio wave is cooked for 17 seconds ON 13 seconds OFF is: It is calculated by the following formula.

Tpd = INT ((600−150) / 17)) × (17 + 13) + (600−150) MOD 17) = 788 seconds (where INT represents the quotient of division and MOD represents the remainder of division)
In step S3, it is determined whether or not the power is reduced by the time calculated in S1 and S2. If the time calculated in S2 is smaller than the cooking time calculated in S1, it is determined that the power is reduced. The process proceeds to step S4. Otherwise, the process proceeds to step S5.

  In step S4, the microcomputer recalculates the cooking time. If the calculation time in S1 is 900 seconds, S2 is 788 seconds, and the radio wave is powered down from 17 seconds ON 13 seconds OFF to 13 seconds ON 17 seconds OFF, the recalculated cooking time Trc is obtained by the following equation.

Trc = (900−788) × (17/13) + 788 = 934 seconds In step S5, it is determined whether or not the radio wave is in an ON state. Otherwise, the process proceeds to step S7. Every time 1 second elapses in step S6, the UDT value is incremented by 1, and the process proceeds to step S7. If the UDT value is greater than or equal to a certain value (eg, 600 or more) in step S7, the process proceeds to step S8, and otherwise, the process proceeds to step S9. In step S8, power down is executed, for example, radio waves are turned on / off in a cycle of 13 seconds ON / 17 seconds OFF, and the process returns to step S5 to repeat the process. In step S9, radio wave ON in normal cooking is executed. For example, the radio wave is turned ON / OFF in a cycle of 17 seconds ON / 13 seconds OFF, and the process returns to step S5 to repeat the process.

  As described above, the heating cooker according to the present invention can be easily reduced in cost, so that it can be developed not only in the heating cooker but also in other home appliances.

The block diagram of the heating cooker in Embodiment 1 of this invention The flowchart of the heating cooker in Embodiment 2 of this invention Overview of the cooking device in the past and in the practice of the present invention

Explanation of symbols

7 Power-down means 8 Magnetron 9 Cooking time recalculation means 10 Display means

Claims (4)

A cooking chamber in which a food item is stored; a magnetron that irradiates microwaves into the cooking chamber; and a power-down unit that reduces a radio wave output wattage by the magnetron, the power-down unit includes an up-down timer, The up / down timer is incremented by 1 every second when the radio wave output is ON, holds that value when the radio wave output during cooking is OFF, and keeps that value for a certain period of time from when the cooking is not cooking. Thereafter, 1 is subtracted every 1 second, and when the value becomes 0, it remains 0. The power down means powers down the magnetron when the value of the up / down timer exceeds a certain value. A cooking device characterized by. The cooking device according to claim 1, wherein the power down means lowers the radio wave output wattage by turning on / off the radio wave . An input means operated by a user, and a cooking time recalculating means, the cooking time recalculating means when the cooking time is determined by the user operating the input means at the start of cooking, and the power down means powers down. The cooking time according to claim 2 , wherein the cooking time is recalculated to make the amount of energy given to the food during cooking the same before and after the radio wave output wattage is lowered . The input means operated by the user, the cooking time recalculating means, and the display means, the cooking time is determined by the user operating the input means at the start of cooking, calculating the time to power down in advance at the start of cooking, If the calculated time is smaller than the cooking time, it is determined that the power is reduced, the cooking time is calculated based on the result, the cooking time is displayed on the display means, and the cooking time is not changed during cooking. The cooking device according to claim 2 .

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