CN1121579C - Microwave oven apparatus and method for modeling charcoal-barbecuing - Google Patents

Abstract

A microwave oven device for simulating charcoal grilling includes a heating chamber, a heater located at the upper end of the heating chamber, a metal grid for grilling heated by the heater, and a A cooling fan that is turned on/off by heat variation to change the temperature of the central portion of the grid. By realizing the frequency characteristics of thermally variable waves that simulate the natural thermal characteristics of charcoal, the device is only used to simulate charcoal grilling, thereby obtaining a natural smell and taste during grilling as when cooking with charcoal.

Description

Microwave oven device and method for simulating charcoal grilling

technical field

The invention relates to a microwave oven, in particular to a microwave oven device and method for simulating charcoal grilling. By realizing the frequency characteristics of a thermal variable wave simulating the natural thermal characteristics of charcoal, a kind of grilling with charcoal is obtained. natural smell and taste.

Background technique

When grilling, conventional microwave ovens are used only for heating, or simply cooking delicate foods so that the user can barely taste the charcoal grill.

Contents of the invention

Therefore, the object of the present invention is to provide a microwave oven device and method for simulating charcoal grilling, by realizing a frequency characteristic of thermal variable waves simulating the natural thermal characteristics of charcoal, so as to obtain a kind of instant heating during the grilling process. The natural smell and taste of cooking on a charcoal grill.

In order to achieve the above object, the present invention provides a microwave oven device for simulating charcoal grilling, which is characterized in that it comprises:

a heating chamber;

a heater located at the upper end of the heating chamber;

a metal grid for grilling heated by said heater;

a cooling fan for controlling heat variation in the central portion of the grid; and

a string value generator for controlling the on/off time of the cooling fan so as to control the heat variation in the central portion of the grid, thereby simulating based on the predetermined frequency characteristic of the thermal variable wave corresponding to the thermal characteristic of charcoal charcoal grill,

Wherein, the string value generator includes:

a controller for optimizing the best timing of on/off of the cooling fan in order to control the heat variation in the central part of the grid;

a simulator for simulating the relationship between the grid center temperature and the on/off time of the cooling fan under the control of the controller;

An energy spectrum generator, which generates the simulated energy spectrum signal by calculating the simulated energy spectrum of the thermal wave in the central part of the grid; and

a string generator for transmitting to the controller.

In order to achieve the above object, the present invention also provides a method for simulating charcoal grilling in a microwave oven, characterized in that it comprises steps:

Initialize a string group;

judging whether a character string selected from the initialized character string group is the best value according to an evaluation function;

When the selected character string is not the best value, generate a new intermediate character string;

keep the resulting string equal to the best value and delete the rest of the resulting string;

calculating the best string of said retained values and adding the result to the population of best strings;

judging whether the best character string added to the population is a desired value; and

When the character string of the optimum value is determined not to be a desired value in the judging step, a desired optimum value is obtained by repeating the above steps, or when the optimum character string is determined in the judging step When determined to be desired, outputting the string of the optimum value determines the on/off time of the cooling fan to vary the heating intensity to simulate charcoal heating.

Description of drawings

1 is a simplified cross-sectional view illustrating a microwave oven apparatus and method for simulating charcoal grilling in accordance with the present invention;

Fig. 2 is a block diagram representing a string value generator for simulating charcoal grilling microwave oven device and method according to the present invention;

Fig. 3 is a chart showing input string values for controlling the cooling fan of the microwave oven apparatus and method for simulating charcoal grilling according to the present invention;

Fig. 4 is a flow chart representing a method for string generation of a microwave oven device and method for simulating charcoal grilling according to the present invention;

Fig. 5 is a flow chart showing the heat variation experiment of the heater and the control method until the end of the experiment, the experiment is about the microwave oven device and method for simulating charcoal barbecue of the present invention;

Fig. 6 is a graph showing the heat variation of the grilling grid of the microwave oven device and method for simulating charcoal grilling according to the present invention;

Fig. 7 is a diagram showing the power spectrum curve according to the thermal variable temperature variation of the microwave oven device and method for simulating charcoal barbecue according to the present invention;

Figure 8A is a graph illustrating optimal input string values in accordance with an embodiment of the present invention;

FIG. 8B is a graph representing a simulator power spectrum in accordance with an embodiment of the present invention; and

Figure 8C is a graph showing a power spectrum in accordance with an embodiment of the present invention.

Detailed ways

As shown in Figure 1, the microwave oven according to the present invention comprises: a heating chamber 1; a heater 2 positioned at the upper end of the heating chamber 1; a metal grid 3 heated by the heater 2 for grilling; and a The cooling fan 4 is turned on/off according to the heat variation of the central portion of the grid 3 so as to change the temperature of the central portion of the grid 3 .

With reference to Fig. 2, have illustrated the character string value generation device of the present invention: one determines the optimal time value of this cooling fan 4 on/off to control the controller 5 of grid 3 central part heat variation; A simulator 6 of the relationship between the central temperature of the grid 3 and the on/off time of the cooling fan 4 controlled by the controller 5; an energy spectrum generator 7, which is calculated according to the central thermal variable wave of the simulation grid 3 and a string generator 8, used to transmit an optimal signal produced by comparing a barbecue power spectrum signal PSb with the power spectrum signal PSa output by the power spectrum generator 7 best string value to this controller5.

Here, a character string represents an optimum value set by a 2-digit character string, and furthermore, as shown in FIG. 240-bit string so that the 240-bit string is considered one string.

With reference to Fig. 4, the character string generation method that is used to determine the minimum time value of the conduction/disconnection of cooling fan 4 of the present invention comprises the following steps: initialization string group (41); Whether selected certain character string in string group is optimal value (42); When selected character string is not optimal value, produces a new intermediate character string (43); Reservation and optimal value are complete Equal the strings in the resulting strings and delete the remainder of the resulting strings (44); calculate the best string for that value and add the result to the population of best strings (45) ; Judging whether the best character string added to the overall is the expected value (46); then when judging the clear result that the best value character string is not the expected value, by repeating the above Steps to obtain an ideal optimal value; or when it is the desired optimal value, output the optimal value character string, so as to determine the on/off time of the cooling fan cooling fan 4.

As shown in Figure 5, a heat change experiment representing heater 2 and a control method until the end of the experiment, when simulating charcoal grilling according to the present invention, the experiment is used to measure the heat change when charcoal grilling, comprising steps : measure heat change for grilling (51); show relative distribution of grilling energy by applying measured heat change (52); simulate heat change of heater 2 after checking relative distribution of grilling energy (53); set cooling The on/off timing point (54) of the fan 4; by starting from the set on/off timing point of the cooling fan 4, the thermal variation (55) of the simulated heater 2 is simulated; Heat variation, display depends on the energy distribution (56) of the frequency of heater 2; Whether the error of detecting this energy distribution is within the scope of standard value (57); When the detected error is within the scope of standard value, can Best approximation of thermal characteristics of charcoal grilling (58); experiment and verify heat variation of heater 2; and return to step (54) when errors are retained instead of standard values.

The operating principle of the microwave oven according to the present invention will be described below.

First, when the power supply voltage is applied to the microwave oven, the heater 2 located at the upper end of the heating chamber 1 generates heat to heat the grill plate 3 in the heating chamber 1 .

According to the heater 2, when the temperature of the center portion of the grid 3 rises to a desired point, the cooling fan 4 is turned on or off so as to maintain a constant temperature of the center portion of the grid 3 .

Therefore, as shown in Figure 6, by turning on/off the cooling fan 4, the temperature of the central part of the grid is kept constant, thus making the temperature of the central part of the grid 3 to be kept exactly the same as that of the charcoal grill. As a result, when the on/off time of the cooling fan 4 is adjusted to the optimum value, as shown in Figure 7, according to the energy spectrum of the heat variable wave in the center part of the grid 3, the heat change wave during grilling is formed An approximate straight line a-b.

That is, when the controller 5 generates a control signal capable of controlling the on/off operation of the cooling fan 4 so that the temperature of the central portion of the grid 3 can be kept constant, the emulator 6 receives a slave control signal. The control signal output in the controller 5 and a previous optimal input string signal are used to simulate the relationship between the temperature of the central part of the grid 3 and the on/off timing point of the cooling fan 4.

Then, the energy spectrum generator 7 calculates the spectrum value of the thermal variable wave in the central part of the simulation grid 3 . In the character string generator 8, the energy spectrum value PSa calculated in the energy spectrum generator 7 of the barbecue energy spectrum signal PSb is compared, and an optimal character string is generated so that the obtained result is transmitted to the controller 5 accordingly , thus determine the optimal time value of the cooling fan 4 on/off.

Referring to the flow chart shown in FIG. 4, a method for generating an optimum character string for determining the optimum time to turn on/off the cooling fan 4 has been described above.

Referring to an embodiment for simulating charcoal grilling in a microwave oven according to the present invention, an optimum value representing the on/off time of the cooling fan 4 can be obtained during the operation of the microwave oven, as shown in FIG. 8A, and By replacing the signal output from the controller 5 with the obtained result and calculating the energy spectrum signal of the thermal variable wave according to the simulation grid 3 central part, as shown in Figure 8B, a grid 3 central part in the microwave oven The energy spectrum value of the thermal variable wave is shown in Fig. 8C, thus charcoal grilling can be simulated in the microwave oven of the present invention.

As described above, by realizing the frequency characteristics of thermally variable waves for simulating the natural thermal characteristics of charcoal, the microwave oven of the present invention is only used to simulate charcoal grilling, and thus can obtain a kind of heat that is similar to that obtained when grilling with charcoal during the grilling process. The natural smell and taste of cooking.

Claims (2)

1. a microwave oven apparatus that is used to simulate the charcoal barbecue is characterized in that, comprising:

One heating chamber;

One is positioned at the heater of described heating chamber upper end;

One metal grate that heats by described heater that is used to roast;

One is used for controlling the cooling fan of the thermal change of described grid core; With

One string value generator is used for controlling the conducting/opening time of cooling fan, so that control the thermal change of described grid core, thereby simulates the charcoal barbecue based on the preset frequency characteristic corresponding to the thermal change amount ripple of the thermal characteristic of charcoal,

Wherein, described string value generator comprises:

One is used to optimize the Best Times of conducting/disconnection of cooling fan so that the controller of the thermal change of control grid core;

One is used for simulating the simulator that concerns between the conducting/opening time of the described cooling fan under described grid central temperature and the control of described controller;

One power spectrum generator, the emulation power spectrum of the heat wave by the computation grid core produce emulation can spectrum signal; With

One character string generator is used for being sent to described controller comparing a best string value that produces by the barbecue energy spectrum signal with the grid core with the emulation energy spectrum signal of being exported by described power spectrum generator.

2. a method that is used at microwave oven apparatus simulation charcoal barbecue is characterized in that, comprises step:

Initialization one character string group;

Judge according to an evaluation function whether a certain character string selected from described initialized character string group is optimum value;

When described selected character string is not optimum value, produce new intermediate character string;

Keep character string that is produced that equates with optimum value and the remainder of deleting the character string that produces;

Calculate the best character string of described retention and the result of gained is increased in best character string overall;

Whether the described best character string after judgement and the described overall addition is desired value; With

When value that the described character string in optimum value described in the determining step is confirmed as not being desired, by repeating the optimum value that described above-mentioned steps obtains an expectation, perhaps be determined when being desired when best character string in determining step, export the described character string of described optimum value, output string is determined to simulate the charcoal heating to be used for changing heating intensity the conducting/opening time of described cooling fan.

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