JPH01317412A - Automatic rice cooking method - Google Patents

Abstract

PURPOSE:To supply the water of optimum quantity and to attain rice cooking even when the stock capacity of rice is smaller than cooking rice quantity by measuring the set cooking rice quantity being divided into plural shares, washing the rice and putting the water of quantity, which is set in advance with corresponding to the said times, into a rice cooker together with the rice to be washed at the time. CONSTITUTION:A rice sensor 23 composed of a piezoelectric converting element senses that the rice quantity in a measuring device 3 goes to 0.18l and supplies a detecting signal to a control device 10. A solenoid 31 executes opening and closing interlock to a rice leading-in shutter 32, which is provided in the upper part of the measuring device 3, and a rice falling shutter 33 which is provided in the bottom part of the measuring device 3. Then, the quantity of the falling rice is set to be 0.18l. After the rice of 0.18l to be measured in each time is washed, the water quantity to be set in correspondence to the said measuring time is put-in by a nozzle 51. As a result, a rice cooker 7 is filled with the rice, which is measured and washed in each time, and the water being summed up the water quantity which is set in each time.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is an automatic rice cooker that measures a fixed amount of rice in multiple batches and cooks the rice when the set amount of cooked rice is reached. To provide an automatic rice cooking method capable of cooking rice with an appropriate amount of water even when the amount of cooked rice is less than a set amount of rice to be cooked.

<Prior Art> The automatic rice cooking method is a method that automatically performs a series of steps in which stored rice is weighed, washed, transferred to a rice cooker, and cooked with a predetermined amount of water.

When cooking rice using the automatic rice cooking method described above, the number of rice cookers is set at the start of rice cooking, and when the automatic rice cooking device (meaning the device that implements the automatic rice cooking method) is started, the set number of rice is dropped into the rice washing container. After washing the rice, water is supplied in an amount that is automatically adjusted to match the number of rice cookers initially set, and the rice is cooked (Japanese Patent Laid-Open No. 81-272
(See Publication No. 014).

<Problem to be solved by the invention> However, in the above case, the rice storage container does not necessarily contain a sufficient amount of rice. Even if the rice is set in a rice container, there may only be 5 cups of rice in the rice storage container. In this case,
When the device starts, five cups of rice are placed in the rice washing container and washed, and once the rice has been washed, water is poured into the rice cooker according to the number of rice cookers. As a result, the cooked rice became crab-like and could not be eaten as regular rice.

This invention was made in view of the above problems, and is an automatic rice cooker that can supply the optimum amount of water according to the amount of rice to be cooked and cook rice even when the storage capacity of rice is less than the amount of rice to be cooked. The purpose is to provide a method.

Means for Solving the Problem> In order to achieve the above object, the automatic rice cooking method of the present invention measures the set amount of rice to be cooked in multiple batches, and each time the rice is poured into a rice washing container. The process of transferring and washing the rice and putting a preset amount of water corresponding to that time into the rice cooker together with the washed rice at that time is carried out, and when the set amount of rice is obtained or the rice is stored. The above-mentioned process is discontinued in any case when the amount of rice produced does not reach the set amount of rice, and the process proceeds to the rice cooking process.

In the above case, the amount of water preset for each time is set so that no matter how many times rice measurement is stopped, the amount of water is enough to properly cook the measured rice. There is.

Effect> According to the automatic rice cooking method described above, after washing the rice that has been weighed each time, water is added in an amount of water set corresponding to the weighed time. As a result, the rice cooker is filled with rice equal to the amount of rice that has been weighed and washed each time, and is also filled with water equal to the amount of water set for each time. . In this case, as mentioned above, the amount of water added each time is set so that no matter how many times rice measurement is stopped, the amount of water that is added each time is sufficient to properly cook the measured rice. Therefore, the total amount of water is always the amount that allows rice to be cooked normally according to the total amount of rice.

To be more specific, if the number of rice to be cooked is An, and the total amount of water including the constant is Bn (the subscript n indicates the inlet), then the water Q D n to be added each time is,
It is expressed by the following formula.

Dn -Bn -Bn-1 The amount of water Dn is not necessarily a constant amount, but tends to generally decrease as the number of times of addition increases. Therefore, the amount of water Dn for each input is set in advance based on the above formula, and the amount of water Dn for each input port is set in advance. D2. D3
．． If you add water one by one, even if you stop adding water an arbitrary number of times, the total amount of water Bn will always be the amount of water that allows you to cook rice normally according to the total amount of rice.

<Example> Next, an example of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the configuration of an automatic rice cooking device that implements the automatic rice cooking method of the present invention. The automatic rice cooker (1) is
A rice storage container (■) for storing rice, a measuring device (3) for measuring a fixed amount of rice (in this example, one go) from the rice storage container (2), and a rice washing container (4) for washing the weighed rice. , a water supply device (5) that supplies water to the rice washing container (4), a drainage container (6) that drains the washed rice, and a rice cooker that receives and cooks the washed rice with a predetermined amount of water. A conveying device B) that conveys the rice washing container (4) to a predetermined position, a conveying device e) that conveys the rice washing container (4) to a predetermined position, and a control device (not shown) that controls the operation of each of these components. configured.

To be more specific, the mouth of the rice storage container is a solenoid (21)
The input hole (22) of the rice storage container is opened by the operation of the solenoid (21), and the stored rice can be put into the measuring device a.

(23) is a rice sensor that detects the pressure of rice grains, and is made of, for example, a piezoelectric transducer. Rice sensor (23)
senses when the amount of rice in the weighing device (3) reaches a mass and supplies a detection signal to the control device (10). The solenoid (31) opens and closes the non-introduction shutter (32) provided at the top of the weighing device (3) and the rice falling shutter (33) provided at the bottom of the weighing device (3). ) When the solenoid (31) is not operating, the non-introduction shutter (32) is opened and the rice falling shutter (33) is closed. When the solenoid (31) is operating, the non-introduction shutter (32) is closed.
) and opens the rice falling shutter (33). The matches dropped at this time are set to be one match.

The rice washing container (4) is located below the measuring device (3), and a cylindrical wire mesh (41) is arranged at the upper opening edge, and the lower part is formed into an elongated tapered shape (hereinafter referred to as "tapered part (42) J"). A small hole (43) of a predetermined diameter is provided on the side surface of the tapered portion (42).
43) is opened and closed by a solenoid (44).

The water supply device (5) includes a nozzle (51) that spouts pressurized water toward the taper portion (42), and a solenoid valve (52) that opens and closes the water pipe. Nozzle (51)
The position can be adjusted up and down.

The rice cooker has a top lid (71);
A support rod (72) is attached vertically upward to the
.

The support rod (72) is capable of sliding in the direction shown by the arrow in FIG. It is set in the direction. Furthermore, the motor (T8) is fixed to the main body of the automatic rice cooker (1), and the motor (T8) is fixed to the main body of the automatic rice cooker (1).
The arm (7B) is attached to the rotation axis (75) of 3).
75) and is installed vertically. A sliding projection (77) is provided at the tip of the arm (76), and this sliding projection (77) is slidably engaged with the sliding groove (78). Therefore, when the motor (73) rotates, the sliding protrusion (77) slides back and forth in the sliding groove (78), the support rod (72) moves up and down, and the top cover (71) moves up and down accordingly. It becomes like this. Furthermore, in order to open and close the top cover (71), the motor (73) may be rotated in 1/4 increments.

The transport bag rIt[F]) is a mounting table (on which the rice cooker is placed).
81) and a bar member (82) standing up on the mounting table (81).
). The rod member (82) has a vertically long groove (83).
) is provided, and a rotation shaft (85) of the motor (84) is provided.
When the sliding protrusion (87) provided at the tip of the arm (8B) that is fixed to slides in this groove (83),
The rod member (82) and the mounting table (81) move horizontally, allowing the rice cooker to be moved. In other words, when the arm (86) is facing to the right as shown in Figure 1, the rice cooker will be located to the right of the automatic rice cooking device (1), but the motor (84) will rotate half a rotation. However, as shown in Fig. 3, when the arm (86) faces to the left, the mounting table (86)
1) is moved to the left side, separated from the top M (71) of the rice cooker, and placed below the rice washing container (4).

The conveyance device (9) moves the washed rice container (4) from a position above the drain container (6) to a position above the rice cooker (2) indicated by the broken line in FIG. 3 by the rotation of the motor (91).

Each step in the automatic rice cooking device described above will be explained.

■, Turn on the power switch, set the amount of rice cooked using the rice cooking amount setting switch (not shown), and operate the start switch (not shown). ■, The motor (73) rotates, and the top ) is the first
As the position of the solid line in the figure rises to the position of the broken line, the motor (84) rotates, and the rice cooker ■ moves as shown in Figure 3.
Move below the rice washing container (4). At this time, the conveying device (2) does not operate, and the rice washing container (4) remains positioned above the drain container (6).

(2) The solenoid (21) operates for a certain period of time, and the rice in the rice storage container (2) is thrown into the measuring device G). Weighing device (
3) If there is more than a cup of rice put in, the rice sensor works and supplies a detection signal to the control device (1o), and the process moves to the next step ①. − If the rice storage container does not meet the
It is determined that there is no rice inside, and the process moves on to the following rice cooking process.

■The solenoid (31) operates and the shutter (3) is not introduced.
2) is closed, the rice dropping shutter (33) is opened, and the remaining rice is thrown into the rice washing container (4).

(2) The solenoid valve (52) opens and water is spouted from the nozzle (51). At this time, the water and rice in the rice washing container (4) are moved to the tapered part (42) in the direction opposite to the part that is hit by the water.
As the rice moves along the rice washing container (4), a rotating water flow in the vertical direction is generated in the rice washing container (4), and the rice in the rice washing container (4) can be washed. If the position of the nozzle (51) is set above the water surface, air will be drawn in when jetting water and bubbles will be generated in the rotating water stream, thereby increasing the cleaning power. In addition, the overflow water is drained outside through the wire mesh (41) and drained into the drainage container (
6) Fall. A certain amount of rice (
- is filled with a certain amount of water.

(2) After the time required for washing rice has elapsed, the solenoid valve (52) is closed and the water stops flowing. Then, the solenoid (44) is activated, and the small hole (48) provided in the tapered portion (42) of the rice washing container (4) is opened for a predetermined period of time to drain water into the drain container (6). As a result, the washed rice and the drained water remain in the rice washing container (4). The amount of water that remains after draining, that is, the amount of water that is added to the rice cooking container, differs each time the rice is weighed and washed. Table 1 shows the number of rice cookers An, the total amount of water Bn required for cooking rice with the number of rice cookers An.
, -Water i; lcn -B'n /An Sn
Amount of water Dn that should be added to the rice cooker (7) for the second time
-Bn-Bn-1 is a table illustrating examples. (Margins below) Table 1 (Unit 11) As can be seen from Table 1, as the number of rice cookers An increases, the amount of water per rice cooker Cn decreases, so the amount of water input each time Dn generally decreases. There is a tendency to The amount of input water Dn is adjusted by adjusting the amount of water discharged. The amount of drainage is adjusted by the drainage time, that is, the solenoid (44)
This is done by setting the operating time. For example, small holes (4
Assuming that the flow rate of water discharged from 3) is 12 if/sec, if you want to pour 180 yf of water into the rice cooker (■), set the drain time to 10 seconds. Then, after washing the rice, the amount of water filled in the rice washing container (4) (hereinafter referred to as "full water amount". The full water amount is 800 yf. The full water amount is equal to the value obtained by subtracting the amount of rice from the capacity of the rice washing container.) decreases to tgoyr as derived from the following equation.

300-12 In a relationship.

Table 2 is a table showing the drainage amount Fn, drainage time Tn, etc. for obtaining the input water amount Dn. In this case, full water amount En-3
001f, and the drainage flow rate is V -12y1/sea. (Margins below) Table 2 (Unit: 111 seconds) Note 2 See explanation below. However, since the amount of water Di at the 1st station is very large, water is added in two parts.

That is, the first time, one cup of rice and 190,117 Jf of water are put in, and the second time, there is no rice and only 130 Jf of water is put in.

In this second case, the full water volume is 3901f, and the drainage flow rate is 1
5xl/sec. In this way, when adding rice for the first batch, add the rice and the minimum amount of water necessary to make it fall, and add the insufficient water from the second time onwards. , increase the capacity of the rice washing container (4) to 1
There is no need to make a large one to match the amount of water at the joint, and it also eliminates water splashing (water hitting the bottom of the pot running down the side of the pot and spilling out) when pouring it into the rice cooker.

(2) The motor (91) operates to position the rice washing container (4) above the rice cooker (7) (see the arrow in FIG. 3). Then, put the washed rice and the remaining drained water into the rice cooker (7).
put it into. Thereafter, the motor (91) is operated to move the rice washing container (4) directly below the weighing device (3) (see the solid line in FIG. 3).

(2) The steps (2) to (2) above are repeated until the measured number of rice cookers reaches the set number of rice cookers. If the measured number of rice cookers reaches the set number of rice cookers, move on to the next rice cooking process. In addition, as mentioned above, if the number of weighing units is less than 1, it is determined that there is no rice in the rice storage container (z),
In this case as well, proceed directly from ■ to the rice cooking process described below. Furthermore, even if you reduce the number of rice cookers while measuring and washing rice after setting the number of rice cookers at the beginning,
Abort the steps in ~■ and proceed directly to the rice cooking process in ■.

(2) The motor (84) operates, and the mounting table (81) and rice cooker (7) return to the positions shown in FIG. and motor (73
) operates, the top lid (71) is closed, and rice cooking begins. Once the rice is cooked, keep it warm.

[Phase] When taking out the rice, raise the top lid (71) using the lid up/down switch (not shown) and pull out the rice (101) (
(see Figure 1) and take out the rice cooker (7) to the outside of the automatic rice cooker (1). To keep the rice warm again, pull out the rice cooker (7) and place it on the automatic rice cooker (1 ot).
) and operate the lid up/down switch to open the top lid (71).
This is done by lowering the

<Effects of the Invention> As described above, according to the automatic rice cooking method of the present invention, the amount of water added to the rice cooker each time is the same as the amount of water that is added to the rice cooker, no matter how many times the rice measurement is stopped, the rice that has been weighed can be cooked. Since the amount of water is set to be such that the rice can be cooked normally, the total amount of water is always the amount that allows the rice to be cooked normally according to the total amount of rice.

For this reason, if the amount of rice in the rice storage container is insufficient,
Even if the number of rice cookers is changed midway through, rice can be cooked under appropriate water quantity conditions using the rice and water that has been weighed so far, so delicious rice can always be cooked.

[Brief explanation of the drawing]

Fig. 1 is a schematic structural diagram illustrating an automatic rice cooking device that implements the automatic rice cooking method of the present invention, Fig. 2 is a diagram illustrating the opening/closing operation of the top lid of the rice cooker, and Fig. 3 is a movement of the rice washing container and the rice cooker. It is a figure explaining operation.

Claims (1)

[Claims] 1. Measure the set amount of cooked rice in multiple batches, transfer the weighed rice each batch to a rice washing container, wash the rice, and wash the rice in a preset amount of water corresponding to the batch. In either case, when the set amount of rice is obtained by putting rice into the rice cooker together with the rice that has been washed that time, or when the amount of stored rice does not reach the set amount of rice. An automatic rice cooking method characterized by discontinuing the above steps and proceeding to a rice cooking step. 2. When adding rice and water for the first time, the rice and the minimum amount of water necessary to make it fall from the rice washing container are first added, and then only the insufficient amount of water is added. The automatic rice cooking method described in paragraph 1.