JPH03186220A - Water quantity display device - Google Patents

Abstract

PURPOSE:To finish the targeted cooking of rice by deciding whether the feed water quantity is suitable or not by a different decision level corresponding to the kind of a cooker. CONSTITUTION:A deciding means 35 decides whether a weighed water quantity value is suitable for rice cooking of a prescribed rice quantity or not. A result of this decision is displayed by a water quantity display means 15. Also, a cooker kind setting means 8 sets the kind of a cooker in accordance with the rice cooking capacity. Moreover, a decision level setting means 34 sets the decision level of the deciding means 35 to a different level in accordance with the kind of a set cooker. That is, by deciding whether the feed water quantity is suitable or not by a different decision level corresponding to the kind of a cooker, the target cooking finish of rice can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a water amount display device that displays an appropriate amount of water for the amount of rice.

(Prior Art) Conventionally, the following steps are generally taken before starting rice cooking. First, measure the rice as desired using a measuring cup, wash the measured rice, store the rice in a container, and measure the amount of rice according to the amount of rice according to the water level line provided on the inner surface of the container. After filling the container with an appropriate amount of water, the container is placed in the main body and cooking begins.

However, in the above-mentioned measuring procedure, water is stored according to the water level line provided on the inner surface of the container, but this water level line is unclear and difficult to understand, and there is a slight difference in W4 in the dimensions, so the water volume is As a result, the amount of rice and the amount of water may not correspond properly, resulting in a problem that the rice is not cooked properly.

In order to solve such problems, Japanese Patent Application Laid-Open No. 60-962
A display device for the amount of cooking water is proposed in Japanese Patent No. 16. This consists of a measuring means that measures the weight of the container containing rice, and an FCJli that determines the amount of rice based on the output of this measuring means.
i amount determining means; appropriate water amount determining means for determining the amount of water suitable for cooking the determined amount of rice based on the determination result of the rice cooking amount determining means; Container I! Comparing means for determining whether the water supply amount is excessive or insufficient with respect to the determined appropriate water amount based on the output of the measuring means for measuring the change, and a display means for displaying whether or not the water supply amount is appropriate based on the determination result of the comparison means. First, unwashed rice is placed in a container, the amount of rice is measured by a measuring means, this measured value is stored in a memory as the amount of cooked rice by operating a switch, and the appropriate amount of water for this cooking tSIjL is determined by an appropriate amount of water determining means. At the same time, the weighed rice is transferred from the container to a container for rice washing, and after washing the rice is placed in the container again. After this, water is supplied, and the amount of water supplied is determined by comparison means to determine whether the amount of water supplied is too much or insufficient relative to the appropriate amount of water. It is displayed on the display means, and the appropriate amount of water can be obtained without using the water level line of the container. However, this does not have a function to determine whether or not the amount of water to be supplied is appropriate for the appropriate amount of water by adapting it to the area of the rice cooker, etc., so it is not a water amount display that can achieve the desired cooked rice.

(WI problem to be solved by the invention) In the above-mentioned conventional technology, when used as a cooking measuring device equipped with a water amount display device, for example, the water amount judgment level that does not depend on a specific band area determines whether or not the water supply amount is appropriate for the appropriate water amount. However, in rice cookers with different rice cooking capacities, the amount of heat generated by the heater differs depending on the rice cooking capacity, and the amount of evaporation of water during boiling changes accordingly. .

As a result, the appropriate amount of water for cooking the same amount of rice varies slightly depending on the rice cooking capacity, or the area of the rice. However, the conventional technology does not take into account changes in the amount of evaporation due to differences in zonal area, so there is a problem in that it is difficult to obtain the desired cooked rice state.

Therefore, an object of the present invention is to provide a water amount display device that can obtain the desired cooked rice by determining whether or not the amount of water supplied is appropriate for the appropriate amount of water at different determination levels depending on the volume of rice.

[Structure of the Invention] (Means for Solving the Problems) The water amount display device of the present invention includes a measuring means 32, a determining means 35 for determining whether or not the measured water art is appropriate for the appropriate water amount value suitable for cooking a predetermined amount of rice. , a water amount display means 15 for displaying this judgment result, a device type setting means 8 for setting a band area according to the rice cooking capacity, and the above-mentioned judgment means 35 for setting a band area according to the set rice cooking capacity.
and a judgment level setting means 34 for setting the judgment levels of the two to different levels.

(Function) The present invention has the above-mentioned configuration. When the rice cooker is set by the setting means 8, the judgment level setting means 34 sets a judgment level that is suitable for the rice cooking capacity of the set rice cooker. The suitability of this water amount value for the water amount value is determined by adapting it to the swath area, and the result of this determination is displayed on the water amount display means 15.

<Embodiment> Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

Figures 5 and 6 show an example in which a g1 continuous measuring instrument is equipped with a water quantity display device. 211018
A known weight sensor 2 such as the one disclosed in Publication M is provided. Reference numeral 3 denotes a pedestal provided on the upper part of the container body 1, and this pedestal 3 has a hole 4 formed in the upper surface of the container body 1.
The weight of the container 6 placed on the pedestal 3 is applied to the weight sensor 2 via the rod 5, and the weight is detected by the weight sensor 2. A signal is output. Reference numeral 7 indicates an operation panel provided on the front surface of the Iyl instrument body 1, and 8 indicates various setting means provided on the side of the instrument body 1.
Operation of slide switch 8A provided inside l118B
protrudes outside the main body 1, and the operation 118B can be moved laterally through the sliding hole 9 provided in the main body 1. 8. J
, j' 1.5j, j 1. OJ “0
Operate on the number 10 “7” and the letter 11 rFJ! 18
[Various settings are set by combining '3. In other words, if you match operation 1@8B to the number 10, which is 1.8.1, it will be 1.
Various types with rice cooking capacity of 8Q are set, and similarly 1.
5Q, 1. Various types with a rice cooking capacity of OQ and 0.7Q are set. Also, when the character 11 rFJ is matched with operation fi8B, various types having an average rice cooking capacity are set.

FIG. 8 shows the operation panel 7, 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 ED, and has a water amount display means 15 for displaying the t! ing.

The rice cooking m/overlay display means 14 is a 5-digit 7-hygment type LC.
D, when measuring rice, the amount is displayed in 9 units of 3111, or when converted to the weight per cup, the amount of cooked rice is displayed in cups. . The mode display means 1G has two LEDs.
It consists of cooking rice! ! /It has a display section 16A that lights up when the weight display means 14 is displayed in q units, and a display section 16B that lights up when it is displayed in cup units. The characters 17 "cup" are written on the side of the display section 16A, and the characters 17A "7 types 1cllI" are written on the side of the display section 16A. The water amount display means 15 is 10
Display sections 18 in the shape of "mouth" are provided in vertical rows, and the character "soft" 19 is written on the side of the display section 18 in the second row from the top, and the display section 18 in the fourth row On the side of the display section 18, the characters ``Normal'' 20 are written, and on the side of the display section 18 in the sixth row, the characters 21 "Hard Ko" are written. ” characters 22 are written. Furthermore, the display section 18 and the characters 19, 20, and 21 in the second to sixth rows are surrounded by a frame 23, and within this frame 23 are written characters 24 "appropriate range". In addition, as shown in FIG. 4, the display section 18 with the shape of 10 "mouths" indicates that the display section 18 with ■■■■■ indicates that the area is outside the proper edible range surrounded by the frame 23, and the display section 18 is red, indicating that it is outside the proper edible range. The display part 18 of ■■■■ which indicates that the hardness is within the edible range and is harder or softer than "normal" is orange, and the display part 18 of ■ which indicates the hardness is "normal".
has a green color. This water tank display means 15 shows the meter water loss [
When the amount of water set to 1 is the appropriate amount of water to cook rice of normal hardness, the display section 18 corresponding to the character 20 "normal" lights up in green, indicating that the amount of water is normal. If there is more than when cooking hard rice, use the character 1 for “soft”
The lighting will gradually shift in the direction of 9, that is, toward the upper row, and conversely, if there is less, the lighting will shift step by step in the direction of the character 21, which is "f!", that is, toward the lower row, and it will be displayed in orange. , indicates that the range from the character "soft" 19 to the character "hard" 21 surrounded by the frame 23 is within the appropriate edible range. Furthermore, as shown in FIG. 14, when the display section 18 (■) lights up in red, the frequency selection means and the sound notification means, which will be described later, emit a 3.4KHz sound at 0.1 seconds every 2 seconds.
Alerts for 25 seconds, and when the display part 18 of ■ lights up in red, a 3.5 KHz sound is alerted every 2 seconds for 0.125 seconds,
3.6K Hz when the display section 18 of ■ lights up in red.
The sound of is announced for 0.125 seconds every 2 seconds, and the display section 18 of
When lights up in red, 3.7 G) 2 sounds for 0.125 seconds every 2 seconds, and when display part 18 of ■ lights up in orange, 4.0KHz, 3.9. , 3.
8K) → Z sound is announced for 0.125 seconds every 0.5 seconds, and when the display section 1B of ■ lights up in orange, 4. O
K dayz, 3.9KHz, 3.9KHz sound is notified in order for 0.5 seconds every 0.5 seconds, and when the display section 18 of ■ lights up in green, the 4.0KHz sound is announced by 0.5 seconds.
The alarm is repeated for 0.125 seconds every second, and when the display section 18 (■) lights up in orange, the frequency is 4.0KHz, 4.
1KHz, 4. 4. When the IKK2O sound is sequentially announced for 0.125 seconds every 0.5 seconds and the display section 18 of ■ lights up in orange. OK mouth, 4.1KHz,
4.2KHz sound is emitted in sequence for 0.125 seconds every 0.5 seconds, and when the display section 18 of ■ lights up in red, 4.3
The sound of KH2 is broadcast for 0.125 seconds every 0.5 seconds.

The operating means 12 includes a start switch 25 and an off switch 2.
6, a rice cooking amount setting/cancellation switch 27, and a display mode switch 28.

Then, when the empty container 6 is placed on the pedestal 3 and the start switch 25 is pressed, the power is turned on and the weight of the container 6 is stored in the memory. In addition, when the desired amount of rice is placed in the container 6 and the set/cancel switch 27 is pressed, the rice is cooked.
/The amount of rice cooked per cup displayed by the weight display means 14 is stored in the memory and the display is fixed. After this, when water is supplied into the container 6, the water amount display means 15 displays the degree of the measured water amount value relative to the appropriate water amount value. Further, when the setting/cancellation switch 27 is pressed again, the display on the water amount display means 15 is turned off and the rice cooking amount/weight display means 14 is displayed. By pressing the display mode switch 28, the display of the cooked rice/weight display means 14 and the lighting of the display sections 16A and 16B are switched to the amount of cooked rice and the weight. In this case, as shown in FIG. 10, when the amount of rice to be cooked is displayed on the cooking rice l/vertical amount display means 4, the 7 segments of the last second digit display a decimal point, for example, "
5. It is displayed that it is an OJ cup. Further, when the off switch 26 is pressed, the @ symbol is turned off and the display is turned off.

FIG. 2 shows a block diagram, and 29 is a control means consisting of a microcomputer, which is a well-known CPU (not shown), a clock means, and a ROM and R memory means.
It has an AM, an input circuit, 2 output circuits, a backup circuit with a backup power source, etc., and the ROM stores a total of 11 weighing programs (*, comparative constant values, multiple types of judgment level data according to multiple types, etc.). Further, the IIil1 means 29 has a calculation function for the weight detection signal from the weight sensor 2, a control function for the display means 139, the frequency selection means 30, the notification means 31, and the like.

Then, by this control means 29 and the superposition sensor 2, h
It constitutes a measuring means 32. Further, the control means 29 has a configuration shown in the block diagram of FIG. This includes a rice cooking amount determining means 33 which determines the amount of cooked rice based on signals from a measuring means 32 and a setting/'cancellation switch 27 which is a rice amount setting means, and a rice cooker +! A determination level setting means 34 sets a water amount determination level adapted to each type based on a signal from the setting means 8, and a determination level setting means 34 sets a water amount determination level adapted to each type based on signals from the rice cooking amount determination means 33 and the measuring means 32. It has a rice + water amount determining means 35 that determines the degree of measurement value relative to the appropriate value of rice + water using the determined water amount determination level, and a display 11J control means 36. +Displaying the determination result of the water amount determining means 35 on the water amount displaying means 15;
Cook rice by amount or weight! //It is displayed on the amount display means 14.

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

First of all, users should purchase various rice cookers and other items @1! The settings are made by the setting means 8. In other words, slide the operation 1fi8B of the various setting means 8 and adjust the operation fi18B to match the display of the rice cooking capacity of the rice cooker, etc.
Align it to the number 10 position. Next, start switch 25
is pressed to set the measuring means 32 to zero, and then the empty container 6 is placed on the pedestal 3 and the start switch 25 is pressed to memorize the stacking of the containers 6.

Next, when the desired amount of rice is placed in the container 6 and the setting/cancellation switch 27 is pressed, a signal from the weight sensor 2 is given to the rice cooking amount determining means 33, and this measured value is processed as shown in the flowchart of FIG. It is converted into the amount of cooked rice, and when it is within the range of rice cooking capacity, it is stored, and the amount of cooked rice/weight is displayed by means 1.
4, and when this determination result deviates from the rice cooking capacity of the rice cooker, for example when ffl amount value W≧1015Q, r is displayed on the rice cooking amount/weight display means 14 as shown in FIG.
The notification means 31 displays an over-display of EEEEIl.
Notify by. After this, the rice was transferred to a rice washing container and washed, and the washed rice was stored in the container 6 and water was supplied, and the Yonago water amount determining means 35 measured the rice using the water amount level set by the determination level setting means 34. The degree of measurement value for the appropriate amount of rice + water based on the amount of cooked rice is determined as shown in flowchart 1 in Figure 12, and Yonago ink is! %
If it is within the semi-range, the character ``normal'' is considered appropriate.20
The display section 18 corresponding to 4 lights up in k1 color and OK+-
12 sounds are notified every 0.5 seconds for 0.125 seconds, and based on this sound, the lighting of the display section 18 moves up and down in stages according to the degree of water amount, so that the water amount display means 15
to be displayed. Based on this determination result, the display control means 36 lights up the display section 1B of the water amount display means 15 in stages.

The rice cooking amount determining means 33 converts the rice cooking amount in cups to 9 units of rice weight by converting 148.5g/l cup, which was determined by experiment, to 150q/l, as shown in Figure 9.
It is calculated as an approximation of 1 cup, and 1 cup is multiplied by X-17150, which is a set value of rice weight. In this case, the amount of cooked rice is displayed to the first digit below the decimal point, as shown in Figure 10, for example, X = 150.
At 0g, 1500X 1/150 = 10.0
"10. Display as OJ cup, X = 1000
When g, 1000x 1 /150-6.667 is expressed as r 6.64 cup, and when X -16g, 16X 1 /150-0.10Ei7 is expressed as (ilo, o
to 10.0 in the range of minimum value 0.1. 9.9. 9.
8-0.5. 0.4°G, 3. 0.2. It is displayed as 0.1.

The judgment level setting means 34 performs the judgment level setting means 34 as shown in the flowchart of FIG. According to each type set by the setting means 8, a judgment level adapted to the rice cooking capacity is set. For example, when various types for 1.8Q are set, a judgment level for 1.8Q is set, and a judgment level for 1.5Q is set. When various settings are made for 1.5Q, the judgment level for 1.5Q is set, and when F is set, a judgment level for the average appropriate value is set.

The determination made by the rice + water amount determination means 35 is performed in such a way that the width of the display condition water amount per each display section 18 in the water amount display means 15 increases as the set amount of rice increases. In other words, the Yonago water amount determining means 35 has a determination level line A-1 determined by the following equation, as shown in FIG.

Y=a -X+b However, Y is Yonago water amount determination condition 1LX is rice amount setting means 2
7, a is a constant that determines the slope of the judgment level line A'-1 so that as the rice amount increases, the display condition water amount width per 1a1 on the display section 18 increases, and b is, for example, This is a constant set for each band product of 0.7Q to 1.8q. Then, the constant a and the constant s are as shown in the following table, each judgment level line A~! It is set differently each time. , 81! For example, various constants a and b for 1 and 8Q are shown in the following table.

Il again! Constant a for A line and B line of 1fiJ.

b is as shown in the following table, and after C line, B line + (0, 1x-5) is changed to C line, C line +
Let (0, tx-5) be the D line...

The conditions for the display section 18 of ■ indicating that the settings of constant a and constant A are "normal" to light up are the relationship between rice IIX and the weight Q of rice when it absorbs water and becomes rice after cooking.
It is set to be around X-2 or 3. In other words, set the weight ratio to be 2.3, which is the appropriate cooked weight ratio, and set the condition for the indicator 8I118 (■, which indicates "hard grain") to light up, to set the weight ratio to be around 2.15. The condition for the display section 18 of "■" indicating "soft texture" to light up is that the weight ratio is 2.45.
The display area 18 of ■ indicating "slightly hard texture" and the display area 18 of ■ indicating "slightly soft texture" are located in the middle of each, and the display area 18 of ■ to ■ indicates "slightly soft texture". The display portions 18 of portions 18 and 0 are set to the widths of the display portions 18 of ■ and ■ or the widths of the display portions 18 of ■ and ■.

Then, the Yonago water amount determining means 35 uses the set rice ff1X.
Yonago water volume total 1 [IY is judgment level setting means 3
It is determined in which range of each determination level line A-1 set in step 4, and when Y
When <8, the display section 18 is ■, when B≦Y<C, the display section 18 is ■, when C≦Y<D, the display section 18 is ■, D≦Y
When E≦Y<F, the ■ display section 18 indicates "hard"; when F≦Y<G, the ■ display section 18 indicates "normal".
Display section 18 of , when G≦Y, H display section 18 of ■, mouth≦
Display part 18 of ■ indicating "soft cut" with Y<I, ■≦Y
In this case, each of the display sections 18 (■) lights up, and the buzzer sound explained in FIG. 14 is notified.

In this way, in the above embodiment, when various settings are set by the various setting means 8 according to the rice cooking capacity of the rice cooker used, the judgment level setting means 34 sets a judgment level adapted to each set for each load. Set to different levels and rice →−
The water amount determining means 35 adaptively determines whether the measured water Il value is appropriate for the appropriate water m value suitable for cooking a predetermined amount of rice according to the set determination level, and this determination result is displayed on the water amount display means 15. The amount of heat generated by the heater differs depending on the type, and the amount of evaporation of water during boiling also changes. You can get perfectly cooked rice.

In addition, in the above embodiment, the frequency of the notification sound is changed according to the water amount display level, and the higher the notification sound becomes as the water amount display level increases, and the frequency of the notification sound becomes higher as the water amount display level increases. When the display level is low, the height of the notification sound is sequentially lower than the sound height of the display section 18 in ■, and conversely, when the display level is high, the height of the notification sound is gradually increased. It becomes easier to distinguish the display level by ear, and it is even easier to distinguish because the intervals between the notification sounds are different between those within the proper edible range and those outside the range.

FIG. 15 shows another embodiment of the operation panel, in which the same parts as in FIG.
A is provided with the same water amount display means 15 as in FIG. 8, but instead of the rice cooking amount/weight display means 14, a weight display means 14A consisting of a 5-digit 7-segment LCD and a 3-digit 7-segment LCD is provided. The rice cooking amount display means 14B is provided so that the weight and the rice cooking amount can be displayed at the same time, and the mode display means 16 is omitted. The display means 13A is also provided with a time display section 37 consisting of a 4-digit, 7-segment LCD.

Further, the operating means 12A of the operation panel 7A is provided with the same start switch 25, off switch 26, and setting/cancellation switch 27 as in FIG. 8, but the display mode switch 28 in FIG. Combination switch 38.3
8A is provided. Also, on this operation panel 7A, the amount of water that can be used to prepare the desired amount of cooked rice can be displayed in the same way as the operation panel 7 in FIG. 8.

FIG. 16 shows another embodiment of the sound notification, and in this example, the control means 29 of FIG. There is no audible alarm when the indicator lights up, but an audible alarm is made when a display indicating that the water level is within the appropriate edible range is made, and the water level is harder or softer than normal. When the display section 18 of ■■■■ indicating that the water level is lit, it will be notified once for 0.125 seconds, and when the display section 18 of ” and “hard” or “soft”.

FIG. 17 shows a rice cooker equipped with a starch syrup display device. The same parts as in FIG.
The weight sensor 2 is provided on the inner bottom of the outer case 41, and various setting means 8 similar to that shown in FIG. 6 are provided on the side.

These various settings 4. is done on the production line. 3A is a dish-shaped pedestal provided at the inner bottom of the inner case 40, and a mounting seat 42 provided at the center bottom of this pedestal 3A is attached to the rod 5.
It is connected to the weight hinge 2 via. An opening 43 is provided in the center of the pedestal 3A, and a heat sensitive section 45 having a temperature sensor 44 therein as a concentration detecting means is pressed against the outer bottom of the container 6 via a spring 46. 4
7 is a rice cooking heater provided at the inner bottom of the inner case 40;
7A is a heat retention peak provided on the outer side of the inner case 40 and the lid to be described later; 48 is a lid that opens and closes the top openings of the three main bodies; the lid 48 or the main body 39 is provided with an operation panel 7 or 7A; It is being Further, the control means 29 shown in FIG. 2 is equipped with a well-known rice cooking function, and the heater 47.47A is
is designed to be controlled. In this example as well, the amount of water can be displayed so that the desired level of cooked rice can be determined based on the water store determination level set by the various setting means 8. At the same time, the appropriate amount of water for cooking rsm is added to the container 6.
After filling the rice bowl with water, the lid 48 can be closed and rice can be cooked. Further, the control means 29 of the rice cooker stores water mother determination levels corresponding to a plurality of types.
Since it is possible to select a judgment level suitable for each type, it is possible to equip multiple @fIs with the same control means, thereby reducing costs.

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 as to confirm whether or not the jt amount value is appropriate for the appropriate value. Further, as various setting means, a rotary switch or the like may be appropriately selected. 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 for example, the user sets the amount of rice with the setting switch and stores it in the memory, and this setting value is transferred to the separate cup Alternatively, the sample may be weighed and stored in a container. Moreover, it can be applied not only to rice cookers using electric heaters but also to various types of rice cookers such as gas cookers.

[Effects of the Invention] The present invention includes a measuring means, a determining means for determining whether or not the measured water amount value is appropriate for the appropriate water amount value suitable for vC rice of a predetermined amount of rice;
A water amount display means for displaying this judgment result, various setting means for setting various types according to the rice cooking capacity, and a judgment level setting means for setting the judgment level of the judgment means to different levels according to the set types. It is possible to provide a water amount display device that can obtain the desired cooked rice by determining whether or not the amount of water supplied is appropriate for the appropriate amount of water using different judgments according to each type.

[Brief explanation of drawings]

1 to 14 show an embodiment of the present invention, FIGS. 1 and 2 are block diagrams, FIG. 3 is a flowchart showing the operation of the judgment level setting means, and FIG. 4 is a judgment line. Figures 5 and 6 are explanatory diagrams showing the relationship between the parts, and Figures 5 and 6 show a cooking measuring device equipped with a water quantity display device.
Figure 4 is a perspective view, Figure 6 is an overall sectional view, and Figure 7 is a vessel! ! A front view of the setting means, FIG. 8 is a front view of the operation panel, FIG. 9 is a graph showing the relationship between rice weight and amount of rice cooked, and FIGS. 10 and 11.
The figure is a front view showing the main parts of the operation panel, Figure 12 is a flowchart showing the operation of the rice + water amount determining means, Figure 13 is a flowchart showing the operation of the rice cooking amount determining means, and Figure 14 is the display section and notification sound. Graph showing the relationship between the frequency and the 15th
FIG. 16 is a front view of an operation panel showing another embodiment of the present invention, FIG. 16 is a flowchart showing another embodiment of the sound notification operation, and FIG. 17 is a water level display device showing another embodiment of the present invention. It is a sectional view of the equipped rice cooker. 8...: Various setting means 15...Water amount display means 32...Measuring means 34...Judgment level setting means 35...Rice + Mizumura judgment means (judgment means) l No. o @ 4 \ No. Figure 12 Figure 13 Water level Figure 14

Claims (1)

[Scope of Claims] Measuring means, determining means for determining whether or not the measured water amount value is suitable for cooking a predetermined amount of rice, a water amount display means for displaying the determination result, and a water amount displaying means for displaying the determination result. A water amount display device comprising: a device type setting device for setting a device type; and a judgment level setting device for setting a judgment level of the judgment device to a different level depending on the set device type.