JPH03186221A - Water quantity display device - Google Patents

Abstract

PURPOSE:To automatically correct the container weight error caused by a variance of weighing means by correcting a container weight value in accordance with a zero set value of the weighing means, when a state that there is no container is detected by a container detecting means. CONSTITUTION:A deciding means 33 decides whether a weighed water quantity value to a correct water quantity value being suitable for rice cooking of a prescribed rice quantity is proper or not. A result of this decision is displayed by a water quantity display means 15. Also, the state that a container exists or not is detected by a container detecting means 10. Moreover, in an automatic container tare means 36, when container weight is stored in a storage means 35, and also the state that there is no container is detected by a container detecting means 10, zero setting of a weighing means 31 is executed, and in accordance with this zero set value, said container weight value is corrected. As a result, the error of stored container weight generated by a variance of the weighing means can be corrected automatically.

Description

[Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention is a water amount display 'I' that displays the appropriate amount of water for the amount of rice.
In conjunction with AE, especially when weighing, first set the zero point of the measuring means and memorize the weight of the empty container as iL m L, and then subtract the container weight from the measured value to calculate the amount of rice or yonago. This relates to a water volume display H position that is equipped with a container weight and tare processing function.

(Prior Art) Conventionally, the following steps are generally taken before starting rice cooking. First, measure the rice as desired using a measuring cup, and use this 1l.
il'! Rt-' Wash the rice, store it in a container, and store the appropriate amount of water for the amount of rice according to the water level line set on the inner surface of the container depending on the rice store, and then close the container. Start cooking rice after placing it in the container body.

However, in the above-mentioned measuring procedure, water is stored in line with the water level line provided on the inner surface of the container, but this water level line is unclear and difficult to see, and some errors occur in the dimensions, so it is difficult to accurately measure the amount of water. The measured value is vAn, and as a result, the amount of rice and the amount of water may not correspond properly, resulting in a problem that good rice is not cooked.

In order to solve such problems, Japanese Patent Application Laid-Open No. 60-962
A display device for displaying the amount of cooking water is proposed in the 16th publication. This includes a measuring means for measuring the weight of a container containing rice, a rice amount determining means for determining the amount of rice based on the output of this measuring means, and a rice amount determining means for determining the amount of rice to be determined based on the determination result of the rice amount determining means. The amount of water to be supplied is calculated based on the output of the appropriate amount of water determination means that determines the amount of water suitable for cooking rice, and the measuring means that supplies water into the container containing the rice and measures the change in the number of passengers in the container containing the rice and water. A comparison means for determining excess or deficiency;
The device is equipped with a display means for displaying whether or not the amount of water to be supplied is appropriate based on the determination result of the comparison means. First, rice before washing is placed in a container, the amount of rice is measured by a measuring means, and this measured value is switched. The amount of rice to be cooked is stored in the memory through the operation, and the appropriate amount of water for this amount of rice to be cooked is determined by the appropriate amount of water determining means.The weighed rice is transferred from the container to a container for washing rice, and after washing the rice is stored in the container again, and then water is supplied. This system determines whether the amount of water supplied is excessive or insufficient with respect to the appropriate amount of water, and displays the appropriateness of the amount of water supplied on the display means, making it possible to obtain the appropriate amount of water without using the water level line of the container. This type of water display device is usually equipped with a container weight tare processing function, which first sets the zero point of the measuring means by operating a switch during fit II, and then weighs the empty container. Then, the weight of the container containing rice or rice and water is calculated, and the stored weight of the container is subtracted from this measured value to detect the weight of rice or the weight of rice + water. It was designed to do so.

(Problems to be Solved by the Invention) In the above-mentioned prior art, the weight of the container is stored in the zero setting state, and the weight of the container is subtracted from the subsequent measured value to detect the weight of rice or the weight of Yonago water. The detection characteristics of the weight sensor are easily affected by changes in ambient temperature, and the zero point of the weight sensor changes due to changes in ambient temperature from when the container weight is memorized until the amount of rice or rice + water is measured, resulting in a change in the container weight value. Because errors occur due to variations in the weight sensor, accurate rice weight or Yonago water weight cannot be detected. In order to eliminate such errors, it is necessary to set the zero point by operating a switch and store the container II each time the weighing is performed, which poses a problem of complicated handling.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a water amount display device that automatically corrects errors in stored container weights caused by variations in weight sensors.

[Structure of the invention] (Means for solving the problem) The water amount display device of the present invention includes a measuring means 31 and a storage means 35.
, a determination means 33 for determining whether or not the measured water lea is suitable for the appropriate water amount for cooking a predetermined amount of rice, a water amount display means 15 for displaying the determination result, and a container detection device for determining the presence or absence of the container 9. When the weight of the container is stored in the means 10 and the storage means 35 and the container detection means 10 detects that there is no container, the weighing means 31 is set to zero, and the weight of the container is adjusted to the zero setting value. It is equipped with an automatic container tare means 36 for correcting the weight value.

(Function) According to the present invention, with the above configuration, after the container weight is stored in the storage means 35, each time the container 9 is removed from the weighing means 31, the automatic container tare means 36 performs zero setting and adjusts it to the zero set value. The container weight la is corrected by the determining means 3.
3, the suitability of the measured water fnfla') relative to the appropriate water quantity value is determined based on the value obtained by subtracting the corrected container weight value from the measured value, and the result of this determination is displayed on the water quantity display means 15.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

Figures 10 to 12 show an example in which a water quantity display device is installed in a cooking measuring instrument. 62-2110
A known weight sensor 2 such as that disclosed in Japanese Patent No. 18 is provided. Reference numeral 3 denotes a pedestal provided on the upper part of the container main body 1, and this pedestal 3 is integrally connected to the weight sensor 2 by a rod 5 inserted through a hole 4 formed in the upper surface of the container main body 1. , the Will is applied to the fortune teller sensor 2 via the rod 5, and the weight sensor 2 outputs a weight detection signal. 6 is inserted into a hole 7 formed in the upper surface of the pedestal 3 and the container main body 1, and is urged upward by a spring 8. It is an elevating body that is provided so as to be pushed down against the force, and a flange 6 protruding from the lower end of this elevating body 6
A presses the actuating piece 10A of the container switch 10, which is a container detection means in the container body 1, when the elevating body 6 is raised, and sends a container no signal, and suppresses the actuating piece 10A of the container switch 10 when the elevating body 6 is lowered. It is designed to release and send a container presence signal. Reference numeral 11 denotes an operation panel provided on the front surface of the container body 1.

FIG. 5 shows an operation panel 11, which includes an operation means 12 consisting of a plurality of switches and a display means 13.

The display means 13 is formed from an LCD or an LED, and has a cooked rice amount/weight display means 14 for displaying the amount of rice, a water amount display means 15 for displaying the water amount, and a mode display means 16 for displaying the display mode. .

Cooking rice 1/Weight display means 14 is a 5-digit 7-segment LC
When rice is measured, the amount is expressed in q units, or it is converted into 1 cup weight.
The rice cooking amount set at 2 o'clock is displayed in cups. The mode display means 16 consists of two LEDs, a display section 16A that lights up when the cooking fftJl/weight display means 14 is displayed in units of 9, and a display section 163 that lights up when the unit of cup is displayed. On the side of the display section 16B, the characters 17 "cooking amount cup" are written, and on the side of the display section 16A, the characters 1 "weight 1gJ" are written.
7A is written on it. The water amount display means 15 has 10 r
Display sections 18 in the shape of OJ are provided in a vertical column, and the display sections 18 are arranged vertically.
On the side of the display section 18 in the 4th row are the characters ``Soft Co'' 19, and on the side of the 4th row display 8!
The character 20 "normal" is written, and the character 21 "hard" is written on the side of the display section 18 in the sixth row. Further, at the bottom of the display section 18 at the bottom, characters 22 indicating "water amount" are written. In addition, the display section 18 from the second to sixth row and the character 1
9.20.21 is surrounded by frame 23, and this frame 2
3 has the characters 24 "appropriate range" written therein.

This water amount display means 15 indicates the L C of the display section 18 corresponding to the character "Zeng" 20 when the measured water amount value is the appropriate amount of water suitable for cooking rice of normal hardness.
D lights up, and if the amount of water is larger than this, the lighting will gradually shift toward the direction of the character 19, which means "soft", that is, toward the upper row.
If the number is low, the lighting will gradually shift in the direction of the character 21 for "hard", that is, toward the bottom row, and the frame 23
"Soft" character 19 to "hard" character 21 surrounded by
The range indicates that it is within the appropriate edible range.

The operating means 12 has an on (zero) switch 25, an off switch 26, a rice cooking amount setting/cancellation switch 27, and a display mode switch 28.

Then, when the ON (zero) switch 25 is pressed without placing the container 9 on the pedestal 3, the II sensor 2 is set to zero.
After that, place the container 9 in the chamber on the pedestal 3 and press the on (zero) switch 25 to turn on the power, store the weight of the container 9 in the memory, set the automatic container tare mode to be described later, and make subsequent judgments. This is done by subtracting the weight of the container 9 from the measured value. Further, when a desired amount of rice is placed in the container 9 and the setting/cancel switch 27 is pressed, the amount of cooked rice in cups displayed by the amount/weight display means 14 is stored in the memory and the display is fixed. After this, when water is supplied into the container 9, the water amount display means 15 displays whether or not the measured water amount value is appropriate for the appropriate water amount value. Further, when the setting/cancellation switch 27 is pressed again, the display on the water amount display means 15 goes out and the rice cooking amount/weight display means 14 is displayed. Display mode switch 28
By pressing , the display on the rice cooking amount/weight display means 14 and the lighting on the display sections 16A and 16B are switched to the rice cooking amount and mm. In this case, when the rice cooking amount is displayed on the rice cooking 11/weight display means 14 as shown in FIG.
The segment displays a decimal point, and for example, "5. OJ cup" is displayed. When the off switch 26 is pressed, the power is turned off, the display goes out, and the automatic container tare mode is canceled.

FIG. 4 shows a block diagram, and 29 is a υfil1 means consisting of a microcomputer, which, as is well known, includes a CPU (not shown), a clock means, a ROM serving as a storage means, and an R
AM, input circuit.

It has an output circuit, a backup circuit with a backup power source, etc., and the ROM stores a measurement program, measurement values, comparative constant values, etc. Also, the control means 2
9 is a calculation function for the weight detection signal from the II sensor 2, a tare processing function, and a display means 13. It has a control function for the notification means 30, etc. And this control means 2
9 and the weight sensor 2 constitute a measuring means 31. Further, the control means 29 has a configuration shown in the block diagram of FIG. This includes a rice cooking amount determining means 32 which determines the amount of cooked rice based on signals from a measuring means 31 and a setting/cancellation switch 27 which is a rice setting means, and this rice cooking amount determining means 3.
2 and the measuring means 31, the rice + water amount determining means 3 determines whether the measured value is appropriate for the appropriate value of the rice + water amount.
3, and a display control means 34, and a display control means 34.
The determination result of the rice + water amount determination means 33 is displayed on the water amount display means 15 via the rice + water amount determination means 15, and the rice amount or weight is determined. /Displayed on the weight display means 14. Further, the control means 29 has a configuration shown in the block diagram of FIG. This has a storage means 35 for storing the weight of the container 90 after zero setting, and an automatic container 8a bag means 36, and the automatic container tare means 36 stores the container weight in the storage means 35 and then switches the container 8a to
When a container no signal is sent from zero, the weighing means 31 is set to zero at this point, and the already stored container weight value is corrected according to this zero setting value, and tare processing is automatically performed. It is something that is done on a regular basis.

Next, the operation of the above configuration will be explained.

First, before placing the container 9 on the pedestal 3, turn on (zero) switch 2.
5 to zero-set the measuring means 31. After this, when the container 9 in the chamber is placed on the pedestal 3, the elevating body 6 is pushed down as shown in FIG. 12, and a container presence signal is sent from the container switch 10 to the control means 29. It will be done. In this state, turn on (zero) switch 2.
When 5 is pressed, the container weight is stored in the storage means 35 and the automatic container tare mode is set as shown in the flowchart of FIG. In addition, when the display means 13 presses the on (zero) switch 25, the q unit is displayed on the rice cooking l/weight display means 14, and the mode display means 16 is in an off state, but within 1 second, the rice cooking rice m/weight is displayed. The display means 14 displays rOJ, and only the display section 17 for the amount of rice cooked in the mode display means 16 lights up. In this state, when the display mode switch 28 is pressed, the rice cooking amount/weight display means 14 continues to display "0" and the weight display section 17A of the mode display means 16 lights up, and when the display mode switch 28 is pressed again, the display section 17A lights up. 17 lights up. Next, when the desired amount of rice is placed in the container 9 and the setting/cancellation switch 27 is pressed, the signal from the weight sensor 2 and the signal from the setting/cancellation switch 27 are sent to the rice cooking amount determining means 32, and this measured value is The amount is calculated and stored in the storage means 35 when it is within the harmful range for cooking rice. Further, the display means 13 displays the amount of cooked rice in units of cups on the cooked rice m/weight display means 14, and the mode display means 16 has a display section 17 for the amount of cooked rice that continues to light up. In this case, when it is determined that the amount of rice is out of the rice cooking capacity as shown in the flowchart of FIG. 9, an over display of rEEEEEJ is displayed on the rice cooking amount/weight display means 14 as shown in FIG. 7, and the notification means 30 will be notified. Thereafter, the container 9 is moved from the pedestal 3 to a rice washing container to wash the rice, and the washed rice is stored in the container 9 and placed on the pedestal 3 again.

In this case, when the container 9 is removed from the pedestal 3, the elevating body 6 is raised by the bias of the spring 8 as shown in FIG. 11, and a container no signal is sent from the container switch 10 to the control means 29. As a result, 70-chi1 in Figure 2! -1~ As shown in the container layer I! Tare processing is performed. In other words, the container 9 is placed on the stand by the automatic container tare means 36! i! ! 3, the zero setting is automatically performed when the container weight is removed from the memory, and the error in the container weight due to the difference between the zero setting value at the time when the container weight was previously stored and the current zero setting value is corrected, and the corrected container weight is stored in the storage means. 35. After this, when water is supplied into the container 9 placed on the pedestal 3, the rice + water amount determining means 33 determines the amount of rice + water that has been corrected to a certain degree for the appropriate amount of rice + water. The water amount is determined by tare processing based on weight and displayed on the water amount display means 15. Based on this determination result, the display ItllI control means 34 lights up the display section 18 of the water amount display means 15 in stages. When the setting/cancel switch 27 is pressed in this state, the water amount display means 15 turns off, the rice cooking amount in units of cups is displayed on the rice cooking II/weight display means 14, and the rice cooking amount display section 17 on the mode display means 16 lights up. From this state, press the display mode switch 28.
When is pressed, the rice cooking amount/weight display means 14 switches to a display of 9 units, and the display section 17A for Q units lights up, and when the display mode switch 28 is pressed again, the rice cooking amount is displayed.

The appropriate value of rice + water stirring for the amount of rice to be cooked is set in a range that is approximately 2.3 times the crew ratio of cooked rice, that is, the weight of rice. This is 5 (cups) x 14 when the amount of rice to cook is 5 cups.
8.5 (Q) Φ743 (g) is the weight of rice, so 743 (Cl) x 2.3 + 1709 (Q) is 2
．． This is three times the weight, and the value added to this by the amount of evaporation during cooking becomes the appropriate value, and approximately ±10 g is set as the standard range. When it is within this reference range, the display section 18 corresponding to the character "normal" 20 lights up as appropriate, and the lighting of the display section 18 shifts up or down depending on the degree of the water amount based on this.

In the above embodiment, as shown in FIG.
Since the container weight is sent from the container switch 10 to the IIJ 111 means 29, the container weight is stored in the storage means 35 at the same time as the power switch 25 is pressed, and the automatic container tare mode is activated. In the automatic container tare mode, each time the container switch 10 detects that the container 9 has been removed from the pedestal 3, the zero setting of the measuring means 31 is performed, and the Correct the container weight stored in
Since the amount of water is determined based on this corrected container weight, even if the characteristics of the weight sensor 2 vary due to changes in ambient temperature and the zero value of the measuring means 31 changes, this zero value will change. Automatic tare processing according to the amount of water is possible, increasing the accuracy of water amount display. Another container layer like this! 1. Since the tare processing is automatically performed in response to the no container signal from the container switch 10, there is no need to operate the switch every time, and operability is improved.

In addition, the display means 13 displays the amount of rice cooked/the amount of rice cooked before setting the amount of rice cooked.
The mode display means 1 is displayed when the weight display means 14 is in the rOJ display state.
6 lights up the rice cooking amount display 17 and sets the rice cooking amount to 1.
- The amount of rice cooked can be displayed on the rice amount/weight display means 14 at the time of water consumption, so that it is possible to confirm that the mode has shifted to the water amount determination mode, which is convenient for handling.

Figures 13 to 16 are automatic I! Another embodiment of the one-bag device will be described with the same reference numerals given to the same parts as in FIGS. 1 to 12 and detailed explanations of the same parts omitted. The rice cooker is equipped with various setting means 37 for setting various settings according to the rice cooking capacity, and this various setting means 37 is provided with a slide switch 37A in the main body 1, and an operation knob 37B of this slide switch 3γA is connected to the rice cooker. The slide switch 37A is provided outside the main body 1 and can be moved laterally along a sliding hole 38 provided in the main body 1. In addition, the rice cooking capacity corresponding to each type is indicated at the top of the activity hole 38.
J.

The numbers 39 "1.OJ, r O, 7J" and the characters "" 40 that can use an arbitrarily stored container weight are written. In addition, the RO of the control means 29
Container weights suitable for each type are stored in advance in M, such as 450g for 1.8Q and 400g for 1.5Q.
, 1. The data for OQ is stored as 350Q, and the data for 0.7Q is stored as 300q.

Then, the user adjusts the operation knob 37B to the predetermined various types, and as shown in the flowchart of FIG.
If various settings are made for 8Q, 450Q, 1.5
When various settings are made for Q, a container weight suitable for each type, such as 4009, is automatically set, and this container weight is subtracted from the weighed value for determination. For F, the user temporarily stores the weight of a container for a desired rice cooking capacity in the storage means 35, and the stored weight is set each time the operation lm 37B is aligned with the character 40 "". In this example, the container switch 10 and automatic container tare means 36 are omitted.

In this way, in the above-mentioned embodiment, the user does not have to memorize the weight of the container by operating a switch every time the container is weighed, making handling convenient.

FIG. 17 shows another embodiment of the operation panel. The same parts as in FIG.
3A is provided with the same water amount display means 15 as in Fig. 5, but for rice cooking! /Instead of the weight display means 14, a weight display means 14A consisting of a 5-digit 7-segment LCD and a 3-digit 7
A rice cooking amount display means 14B consisting of a segment LCD is provided so that weight and rice cooking amount can be displayed simultaneously, and the mode display means 16 is omitted. In addition, the display means 13A is a 4-digit 7-segment LCD.
A time display section 41 is provided.

Further, the operating means 12A of the operating panel 11A is provided with the same on (zero) switch 25, off switch 26, and setting/cancellation switch 27 as in FIG. 5, but the display mode switch 28 in FIG. 5 is omitted. and the time setting switch 42
．． 42A is provided. And this operation panel 1
1A also has the same effect as the operation panel 11 shown in Fig. 5, and it is convenient to handle because the contents of the weight display in 9 units and the rice cooking amount display in cup units can be checked at the same time on the VR1, and the current time can also be checked. be.

Figure 18 shows a rice cooker equipped with a water amount display i, and the 10th
43 is the inner case 44.
and an outer case 45, etc., and the outer case 4
A weight sensor 2 is provided at the inner bottom of the housing 5 . 3A is a dish-shaped pedestal provided at the inner bottom of the inner case 44;
A mounting seat 46 provided at the center bottom of the pedestal 3A is connected to the weight sensor 2 via the rod 5. Pedestal 3A
An opening 47 is provided in the center of the container 9, and a heat sensitive part 6, which is an elevating body having a temperature sensor 48 therein, is pressed against the outer bottom of the container 9 via a spring 8.

An operating rod 6B is vertically installed on this heat-sensitive portion 6, and this operating rod 6B
B presses or releases the operating piece 10A of the container switch 10 provided on the mounting seat 46. 49 is a rice cooking heater provided on the inner bottom of the inner case 44, 49A is a heat-retaining heater provided on the outer side of the inner case 44 and a lid to be described later, 50 is a lid that opens and closes the top opening of the main body 43, The lid 50 or the container body 43 is provided with an operation panel 11 or 11A. Further, the control means 29 shown in FIG. 2 is equipped with a well-known rice cooking function, and the heater 49.49A is
is designed to be controlled. In addition, Figures 13 to 1
It is also possible to provide an automatic tare processing device having four types of setting means shown in FIG. In this example as well, the effects of the respective embodiments described above can be achieved, and after filling the container 9 with an appropriate amount of water for the amount of rice to be cooked, rice can be cooked by closing the I50.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the structure of the water amount display means may be appropriately selected so that the suitability of the measured value relative to the appropriate value can be confirmed. In addition, the setting of the amount of rice was explained using the example of determining the amount of rice by the measuring means, but the first user is to set the amount of rice with the setting switch, store it in the memory, and then measure this set value with the measuring cup. It may also be stored in a container. Further, a rotary switch or the like may be used as the four-type setting means.

[Effects of the Invention] The present invention includes a measuring means, a storage means, a determining means for determining whether or not a measured water amount value is appropriate for a proper water amount value suitable for cooking a predetermined amount of rice, and a water amount display means for displaying the determination result. , a container detection means for detecting the presence or absence of a container; and a container weight is stored in the storage means, and when the container detection means detects the absence of a container, the measuring means is set to zero, and the zero setting value is set to zero. automatic container taring means for correcting the weight value of the container recorded in accordance with the weight sensor,
It is possible to provide a water quantity display device that can automatically correct errors in water quantity.

[Brief explanation of drawings]

1 to 11 show an embodiment of the present invention, FIG. 1 is a block diagram, and FIG. 2 is an automatic container tare station]! ! ! FIGS. 3 and 4 are block diagrams, FIG. 5 is a front view of the operation panel, FIGS. 6 and 7 are front views showing main parts of the operation panel, and FIGS. The figure shows a flowchart t-h showing the operation of the rice water amount determining means, FIG. 9 is a flowchart showing the operation of the rice cooking amount determining means, and FIGS. show,
Figure 10 is an overall perspective view, Figure 11 is an overall sectional view, and Figure 12 is an overall perspective view.
13 to 16 show other embodiments of the present invention, FIG. 13 is an overall perspective view, FIG. 14 is a sectional view, and FIG. 15 shows four types of setting means. 16 is a flowchart showing the container weight setting operation, FIG. 17 is a front view of an operation panel showing another embodiment of the present invention, and FIG.
The figure is a sectional view of a rice cooker equipped with a water amount display device showing another embodiment of the present invention. 9...Container 10...Container switch (container detection means) 15...Water amount display means 31...Measuring means 33...Rice + water amount judgment means (determination means) 35...Storage means 36.・・Automatic container tare means patent applicant Toshiba Thermal Appliances Co., Ltd. Agent

Claims (1)

[Scope of Claims] Measuring means, storage means, determining means for determining whether or not the measured water amount value is suitable for cooking a predetermined amount of rice, water amount display means for displaying the determination result, and a container. a container detection means for detecting the presence or absence of a container; and a container weight is stored in the storage means, and when the container detection means detects that there is no container, the measuring means is set to zero, and the measuring means is adjusted to the zero setting value. and automatic container tare means for correcting the container weight value.