JPH0490724A - Cooker - Google Patents

Abstract

PURPOSE:To enable a correct analysis of cooking motion and to make it easy for a user to analyze the cooking motion by a method wherein time elapse and temperature state of each process of cooking are stored at any time, and the stored contents are displayed after cooking. CONSTITUTION:Start time and temperature at the start time of a first process of rice cooking motion, and elapse times and temperatures of a second and its succeeding processes are stored in a storing circuit 1b. After finishing of the rice cooking, if a menu switch 21 is being ON-operated over 10 seconds and an advancing switch 22 is also On-operated, the start time and the temperature at the start time of an water-dipped cooking process, and the elapse time and temperature of each of boiling processes, cooking-up process and steaming process in the rice cooking motion which had just finished are displayed successively by an installed liquid crystal display 26. Accordingly, a user can analyze easily the rice cooking motion, and there is no possibility of generating connection errors as in the use of meters.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] [Industrial Field of Application] The present invention relates to a cooking device such as an electric rice cooker or the like.

[Prior Art] A cooking device, such as an electric rice cooker, controls heating by a heater to cook rice and keep it warm. It consists of many steps. Each process is managed based on time changes and temperature conditions at that time, but such management details could not be confirmed from the outside.

For this reason, when checking this, conventionally, a separate measuring device was used to measure and record time changes and temperature conditions, and analysis was performed to determine whether or not management was being performed normally.

[Problems to be Solved by the Invention] However, when using a separate measuring device to measure and analyze time changes and temperature conditions, there is a problem that the analysis results may have errors due to the accuracy of the measuring device and the measurement method. was there.

In addition, even if a problem occurs in the way the food is brought to the table during use, there is no way to analyze the problem, and even if the same cooking is performed again, the room temperature, atmospheric pressure, and amount of food at that time will be affected. Since the cooking contents vary slightly depending on the cooking temperature, etc., it has not been possible to accurately analyze the occurrence of malfunctions.

Therefore, this invention memorizes the time transition and temperature status of each cooking process at any time, and displays the stored contents after cooking, thereby making it possible to accurately analyze cooking operations and to facilitate cooking on the user's side. The aim is to provide a cooking device whose operation can be analyzed.

[Structure of the Invention] [Means for Solving the Problems] The present invention includes a plurality of operation switches for performing various cooking operations, time settings, etc., and a display device for displaying the time set by the operation switches, A cooking device that heats and cooks food includes a temperature detection circuit that detects the temperature during cooking, a clock circuit that measures the elapsed time during cooking, and a temperature detection circuit that detects the temperature during cooking. A storage means for storing the detected temperature of the temperature detection circuit and the measured time of the clock circuit, and the detected temperature and the measured time of each cooking process stored in the storage means in response to a specific operation of each operation switch after the completion of cooking. A display control means is provided for displaying the information on the display device.

[Function] According to the invention having such a configuration, when cooking is started, the temperature in each cooking process is detected by the temperature detection circuit,
Further, the passage of time is measured by a clock circuit and stored in the storage means.

After the cooking is completed, the display control means retrieves the detected temperature and measured time for each cooking process from the storage means and displays them on the display device by operating a plurality of operation switches in a specific manner.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, the present invention will be described as applied to an electric rice cooker and heat-retaining pot.

FIG. 1 is a block diagram showing the circuit configuration, and 1 is a microcomputer. This microcomputer 1 is C
It is composed of a PU (central processing unit), a ROM (read only memory), a RAM (random access memory), etc., and has a built-in clock circuit 1a and a storage circuit 1b as a storage means.

Reference numeral 2 denotes a commercial power source, and the AC power supplied from the commercial power source 2 is rectified and smoothed by a rectifying and smoothing circuit 3, and further stabilized to a desired voltage by a constant voltage circuit 4 before being input to the microcomputer 1. It has become.

Reference numeral 5 denotes a reset circuit, and this reset circuit 5 is adapted to reset the microcomputer 1 in response to the rise of the voltage from the rectifying and smoothing circuit 3. As a result, the microcomputer 1 performs initial settings of the memory and the like when the power is turned on.

Reference numeral 6 denotes a power outage detection circuit, and this power outage detection circuit 6 detects when the power from the commercial power source 2 is interrupted during a cooking operation or the like, and immediately supplies a power outage detection signal to the microcomputer 1. There is. When this microcomputer 1 receives the power failure detection signal,
It is designed to handle power outages.

7 is a rice-cooking heater, and 8 is a heat-retaining heater, both of which are directly supplied with power from the commercial power source 2.

The microcomputer 1 controls the rice cooking heater drive circuit 9 to control the power supply to the rice cooking heater 7, and also controls the warming heater drive circuit 10 to control the electricity supply to the rice cooking heater 8.
It is designed to perform energization control for.

11 is a backup power supply circuit, and this backup power supply circuit 11 backs up the power to the microcomputer 1 when the commercial power supply 2 is out of power.

Reference numeral 12 denotes an oscillation circuit, and this oscillation circuit 12 generates a time-limited operation timing clock for the microcomputer 1.

Reference numeral 13 denotes a temperature detection circuit, which is equipped with a temperature sensor and detects the temperature state during cooking, that is, during rice cooking and warming operations, and supplies a temperature detection signal to the microcomputer. There is.

Reference numeral 14 denotes a switch input circuit provided with a plurality of operation switches, and supplies switch signals from this switch input circuit 14 to the microcomputer 1.

15 is a display device, and display data and display signals for this display device 15 are supplied from the microcomputer 1.

The switch input circuit 14 and display device 15 are combined into a display/operation panel 20 as shown in FIG. 2, and the switch input circuit 14 includes a menu switch 21, a forward switch 22, a return switch 23, a cancel switch 24,
A start switch 25 is provided as an operation switch, and the display device 15 includes a liquid crystal display 26, a quick-cooking lamp 27, a rice cooking lamp 28, a warming lamp 29, and a polished rice lamp 3.
0, a brown rice lamp 31, and a porridge lamp 32 are provided.

The time/temperature data display mode is selected by performing a specific operation of holding down the menu switch 21 for 10 seconds or more.

For example, when the rice-cooking and heat-retaining pot of this embodiment performs a timer operation, the rice-cooking rice cooker goes through a timer operation process, a soaking process, a boiling process, a cooking process, a steaming process, and a warming process in order, as shown in Fig. 3. is set to . In addition, in the boiling process, the rice cooking heater 7 is energized intermittently at relatively long time intervals and for a relatively long energization time, and in the boiling process, the rice cooking heater 7 is continuously energized at maximum power, and in the boiling process. In the process, the power to the rice cooking heater 7 is weakened and energized continuously, and in the uneven process, the rice cooking heater 7 is energized intermittently at relatively long time intervals and the energization time is shortened, and furthermore, in the warming process, the rice cooking heater 7 is energized intermittently. energization is stopped, and the heat insulating heater 8 is continuously energized.

The microcomputer 1 is set to perform the storage process shown in FIG. 4 when the boiling process or later starts. That is, when the soaking process is started, the entire area of the memory circuit 1b is first cleared.

Next, the current time data is read from the clock circuit 1a and stored as first data in a predetermined area of the storage circuit 1b. Further, temperature data based on the temperature detection signal from the temperature detection circuit 13 at that time is stored as second data in a predetermined area of the storage circuit 1b.

In this state, the system waits until the post-boiling process starts, and then when the boiling process starts, the current time is read from the clock circuit 1a and the boiling process starts from that time and the time at the start of the soaking process. The elapsed time is calculated and stored as third data in a predetermined area of the memory circuit 1b. In addition, the temperature detection circuit 13 at that time
Temperature data based on the temperature detection signal from is stored as fourth data in a predetermined area of the storage circuit 1b.

In this state, the system waits until the boiling process is finished, and then, when the boiling process is finished, it is determined that the cooking process has started, and the current time is read from the clock circuit 1a, and the current time is calculated from that time and the time at the start of the soaking process. The elapsed time until the cooking process is started is calculated, and the elapsed time is stored as fifth data in a predetermined area of the storage circuit 1b. Further, temperature data based on the temperature detection signal from the temperature detection circuit 13 at that time is stored as sixth data in a predetermined area of the storage circuit 1b.

In this state, it waits until the cooking process is completed, and then, when the cooking process ends, it is determined that the steaming process has started, and the current time is read from the clock circuit 1a, and that time and the time at the start of the soaking process. The elapsed time from the start to the start of the unevenness process is calculated, and the elapsed time is stored as seventh data in a predetermined area of the memory circuit 1b. Further, temperature data based on the temperature detection signal from the temperature detection circuit 13 at that time is stored as eighth data in a predetermined area of the storage circuit 1b.

Further, the microcomputer 1 is configured to keep the menu switch 21 ON for 10 seconds or more after the rice cooking operation is completed.
When the display mode for time/temperature data continues, the 5th
The call display process shown in the figure is performed. (Display control means) First, variable LN indicating the data number
Set to "1". Then, the first data is read from the memory circuit 1b using this variable LN, and the first data is displayed on the liquid crystal display 26.
to be displayed.

In this state, when the advance switch 22 is turned on, the variable LN is incremented by 1. Then, using this new variable LN, second data is read from the memory circuit 1b and displayed on the liquid crystal display 26.

Thereafter, each time the advance switch 22 is turned on, the variable LN is changed by +1, and until the variable LN exceeds "8", data of a predetermined number is called from the memory circuit 1b by the new variable LN, and the data of the predetermined number is displayed on the liquid crystal display. 26.

When the variable LN exceeds "8", the variable is returned to "1", and the first data is read from the memory circuit 1b and displayed on the liquid crystal display 26.

In this way, each time the advance switch 22 is turned on, the first to eighth data are repeatedly read out and displayed on the liquid crystal display 26.

Furthermore, when the menu switch 21 is turned on in this time/temperature data display mode, the mode is exited and data display in the memory circuit 1b is stopped.

In this embodiment with such a configuration, when the rice cooking operation is started, the current time at the start of the first soaking process is read out from the clock circuit 1a and stored as first data in the storage circuit 1b. At the same time, the temperature at that time is determined from the detection signal from the temperature detection circuit 13 and stored in the storage circuit 1b as second data.

At the start of the next boiling process, the elapsed time from the start of the boiling process is stored in the memory circuit 1b as third data, and the temperature at that time is also stored in the memory circuit ib as fourth data.

Furthermore, at the start of the next cooking process, the elapsed time from the start of the boiling process is stored in the memory circuit 1b as fifth data, and the temperature at that time is stored in the memory circuit 1b as sixth data. Ru.

Furthermore, at the start of the next steaming process, the elapsed time from the start of the steaming process is stored in the memory circuit 1b as seventh data, and the temperature at that time is stored in the memory circuit 1b as eighth data. .

In this way, the start time and temperature of the first stroke in the rice cooking operation, and the elapsed time and temperature of the second and subsequent strokes are stored in the storage circuit 1b.

Then, when the rice cooking operation is completed and the rice is kept warm, if the menu switch 21 is turned on for 10 seconds or more, the time/temperature data display mode is entered. When this display mode is entered, first data is read out from the memory circuit 1b and displayed on the liquid crystal display 26 as shown in FIG. 6(a). This allows you to confirm the start time of the cooking process.

When the switch 22 is turned on in this state, the second data is read out from the memory circuit 1b and displayed on the liquid crystal display 2.
6 is displayed as shown in FIG. 6(b). This allows you to check the temperature at the start of the cooking process.

When the next switch 22 is turned on, third data is read out from the memory circuit 1b and displayed on the liquid crystal display 26 as shown in FIG. 6(c). This allows you to check the elapsed time from the start of the soaking process to the start of the boiling process.

When the switch 22 is turned ON in this state, the fourth data is read out from the memory circuit 1b and displayed on the liquid crystal display 2.
6 as shown in FIG. 6(d). This allows the temperature at the start of the boiling process to be confirmed.

When the next switch 22 is turned on, the fifth data is read out from the memory circuit 1b and displayed on the liquid crystal display 26 as shown in FIG. 6(e). This allows you to check the elapsed time from the start of the soaking process to the end of the boiling process, that is, the start of the cooking process.

When the switch 22 is turned on in this state, the sixth data is read out from the memory circuit 1b and displayed on the liquid crystal display 2.
6 is displayed as shown in (r) of FIG. This allows you to check the temperature at the start of the cooking process.

Further, when the switch 22 is turned on, the seventh data is read out from the memory circuit 1b and displayed on the liquid crystal display 26 as shown in FIG. 6(g). This allows you to check the elapsed time from the start of the cooking process to the start of the steaming process.

When the switch 22 is turned ON in this state, the data is read out from the memory circuit 1b and displayed on the liquid crystal display 2.
6 is displayed as shown in FIG. 6(h). This allows the temperature at the start of the unevenness process to be confirmed.

In this way, by turning on the menu switch 21 for 10 seconds or more after rice cooking and then turning on the proceed switch 22, you can check the start time and temperature of the soaking process in the rice cooking operation that was performed immediately before, as well as the boiling process,
Since the elapsed time and temperature up to each step of the cooking step and the steaming step are sequentially displayed on the existing liquid crystal display 26, the rice cooking operation can be analyzed without using a separate measuring device. Therefore, the rice cooking operation can be easily analyzed on the user side, and there is no possibility of connection errors occurring when using a measuring device.

The content displayed is the rice cooking operation that was performed just before.
Therefore, for example, if a malfunction occurs in a rice cooking operation, the data of the rice cooking operation that caused the malfunction can be displayed and confirmed, allowing for accurate analysis.

Although this embodiment describes the application of the present invention to an electric rice cooker, the present invention is not necessarily limited to this; for example, the present invention can also be applied to a cooking device that heats food, such as an electric oven. .

[Effects of the Invention] As detailed above, according to the present invention, the time transition and temperature status of each process during cooking can be stored at any time, and the stored contents can be displayed after cooking, thereby making it possible to analyze cooking operations. Cooking device 5 that allows accurate cooking and easy analysis of cooking operations on the user side...display device.

The figures show one embodiment of the present invention. Fig. 1 is a block diagram showing the circuit configuration, Fig. 2 is an external view of the display/operation panel, and Fig. 3 shows the cooking process and temperature changes of the rice cooker. Figure 4 is a flowchart showing the time and temperature storage process of each process by the microcomputer, Figure 5 is a flowchart showing the process of displaying the time and temperature of each process by the microcomputer, and Figure 6 is a flowchart showing the process of displaying the time and temperature of each process by the microcomputer. FIG. 3 is a diagram for explaining changes in display data.

1...Microcomputer, 1a...clock circuit, 1b...memory circuit, 9...Rice cooking heater, 13...Temperature detection circuit, 14... switch input circuit, Applicant's agent: Patent attorney Takehiko Suzue No. figure No. figure No. figure (C) (d) (e) (h) No. figure

Claims (1)

[Claims] A temperature detection device that detects the temperature during cooking in a cooking device that is equipped with an operation switch that performs various types of cooking, time settings, etc., and a display device that displays the time set by the operation switch, etc. a clock circuit for measuring the passage of time during cooking; and a storage means for storing the temperature detected by the temperature detection circuit and the time measured by the clock circuit in each cooking process from the start of cooking to the end of cooking. ,
The cooking method is characterized by being provided with a display control means for calling out the detected temperature and measurement time for each cooking process stored in the storage means and displaying them on the display device in response to a specific operation of the operation switch after the completion of cooking. cooking equipment.