JP2005168803A - Cooking apparatus with dipping function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooking apparatus with a dipping function capable of heating a material container evenly as much as possible and eliminating the bias of the water absorbing ratio inside the container. <P>SOLUTION: The cooking apparatus has a body casing 1 with the material container 3 for storing rice and water, a boiler 4 for generating steam, a container temperature sensor 7 for detecting the temperature of the material container 3, and a boiler temperature sensor 11 for detecting the temperature of the boiler 4. The cooking device can execute the dipping cooking for dipping rice in water. The cooking apparatus also has a control board 13 for switching the electricity quantity fed from the boiler 4 to a heater 4b while the dipping is executed to an electricity quantity W1 or to an electricity quantity W2 smaller than the whole electricity quantity in prescribed timing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a device with a diamond function capable of executing a rice cooking in which rice is immersed in water and heated by steam to absorb the rice.

  As a cooking device having such a function, there is known a rice cake machine for producing rice cake by giving a steaming-cooking operation after immersing rice in water and swelling it. A germination brown rice production apparatus was proposed as an apparatus applying the function (Japanese Patent Application No. 2003-320583). This device is intended to germinate brown rice in a short time, so that the brown rice is immersed in warm water for a predetermined time (about 1 hour), then taken out of the water and steamed to germinate, Compared with the device (eg, Patent No. 3165380) of germination by immersing brown rice in warm water for about 24 hours, which has been the mainstream until now, germination brown rice production equipment, The remarkable effect that the oxygen intake of brown rice increased and the germination rate improved was acquired.

  FIG. 6 shows a process of sprouting in this germinated brown rice production apparatus. In the figure, 101 is a main body case, 102 is a material container attached to and detached from the main body case, 103 is a boiler provided at the bottom of the main body case, and 104 is a main body case. The lid body 105 is a temperature sensor for detecting the side surface temperature of the material container. In the material container 102, a predetermined amount (3 to 1 kg) of brown rice and water to the extent that the brown rice is immersed are accommodated and heated by steam generated from the boiler 103. The boiler 103 is controlled based on the temperature detected by the temperature sensor 105 and keeps the material container 102 at a set temperature (about 45 ° C.). In such a state, if the temperature is kept for about 1 hour, water can be absorbed to the extent that it can germinate on the brown rice.

  However, in this apparatus, the steam generated in the boiler 103 has a structure in which the steam is supplied from the lower part of the material container 102 to the upper part through the periphery, so that the vicinity of the upper part of the material container tends to be heated more. In this state, if the boiler 103 is operated with a constant energization amount, a large temperature difference occurs between the upper and lower parts of the material container, and overheating is performed near the upper part of the container, and conversely, heating is performed near the lower part of the container. There was a case where it became insufficient.

Fig. 7 shows the temperature change in the material container over time. The upper part of the container (solid line) is easily affected by the steam heat from the boiler, so the temperature gradually increases with the boiler energization. Since the lower part (dotted line) passes through water, followability is poor and the temperature rise is moderate. In this state, when the temperature sensor 105 reaches the set temperature, the boiler 103 is temporarily stopped, but at that time, a temperature difference has already occurred between the upper part and the lower part of the container. After that, the boiler is turned on and off according to the set temperature, the upper part of the container with good follow-up of the temperature repeats the temperature change each time, and the lower part of the container with poor follow-up rises without being affected by the boiler on-off. Therefore, although the temperature of both decreases to some extent, a large temperature difference will occur at the end of the process. This created excessive water absorption and insufficient water absorption depending on the position in the container, and had a significant effect on the subsequent germination rate.
Japanese Patent No. 3165380 Japanese Patent Application No. 2003-320583

  The problem to be solved by the present invention is to provide a cooking device with a function that can heat the inside of the material container as uniformly as possible and eliminate the uneven absorption of water in the container.

  The present invention includes a main body case including a material container in which cereal and water are stored, a boiler that generates steam, and a boiler temperature sensor that detects the temperature of the boiler, and the cereal and water are discharged by steam from the boiler. A cooking device capable of performing a meal preparation that heats and absorbs water to cereals, the means for switching the energization amount of the boiler between full energization and energization amount less than full energization, and the energization at a predetermined timing during execution It is a cooking apparatus with a diamond function provided with the control means which controls a switching means.

  This control means operates the boiler with full energization in a period from the start of the start until the predetermined time elapses after the boiler temperature sensor detects the predetermined temperature, and energizes the boiler less than full energization in the period until the end of the process. Operate in quantity. Further, during a period in which the boiler is operated with an energization amount smaller than the total energization, when the elapsed time from the start of the process reaches a predetermined time, the boiler is energized for a certain period of time. Furthermore, a container temperature sensor for detecting the temperature of the material container is provided, and during the period in which the boiler is operated with full energization, the boiler is operated with full energization regardless of the temperature detected by the container temperature sensor. During a period of operation with a small energization amount, the energization / non-energization of the boiler is controlled based on the temperature detected by the container temperature sensor.

  According to such a cooking apparatus, for example, when producing germinated brown rice, the energization amount to the boiler can be switched between full energization and an energization amount smaller than the full energization at a predetermined timing, and thus occurs at the time of all energization. When a large amount of steam acts on the upper part of the material container and the boiler energization is reduced thereafter, the generation of steam is suppressed and overheating at the upper part of the container is prevented, and the steam heat staying at the upper part of the container is The material in the container can be gradually heated and uniformly heated. At this time, the boiler is not completely stopped, and is kept in a state where steam generation is suppressed with a low energization amount, so that the container can be kept at an appropriate temperature regardless of the ambient temperature, and responsiveness is good even when steam is required. .

  In addition, by switching between full energization and low energization based on the boiler temperature, the amount of overshoot relative to the set temperature (diamond temperature) can be reduced compared to control based on the container temperature, resulting in excessive steam generation. In particular, a rapid temperature rise at the top of the container is avoided, and stable heating can be achieved. Furthermore, since the boiler is fully energized at a certain timing with the container temperature as a reference at the time of low energization, it is possible to sufficiently secure the amount of heat necessary for me regardless of the capacity of the brown rice accommodated.

  A material container having a drain function at the bottom with the top opened, a main body case attached and detached with the material container having a gap, and a steam boiler provided below the mounting position of the material container in the main body case A germination brown rice production apparatus in which the material container is heated by steam generated in the boiler, and a part of the steam is introduced into the container from the upper opening, and a cooking apparatus provided with this form.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an internal cross-sectional view showing an apparatus for producing germinated brown rice according to an embodiment of the present invention.
Reference numeral 1 denotes a main body case, in which a body portion and a top portion are integrally formed, and a bottom plate with legs is attached to a bottom surface to form a box shape, and a container housing portion 2 is recessed in the top portion. A material container 3 is attached to and detached from the container housing portion 2 and is attached in a state where a gap s <b> 1 is provided with the inner peripheral surface of the container housing portion 2. A boiler 4 is a steam generating means, which is provided on the bottom plate of the main body 1 and has an upper surface opened to the container housing portion 2. Reference numeral 5 denotes a lid that opens and closes the upper surface of the container housing portion 2, and reference numeral 6 denotes an outside air temperature sensor that is attached to the outside from the vicinity of the bottom of the main body 1 that is not easily affected by the temperature in the boiler or the container. Reference numeral 7 denotes a container temperature sensor, which is attached to the bottom surface of the container housing portion 2 with a spring property, and is in close contact with the outer bottom surface of the material container 3 attached to the container housing portion 2. In addition, it is desirable that the lid 5 is configured to be detachable in consideration of cleaning, drainage, and the like in the container housing portion 2 and the boiler 4.

  The material container 3 has a cylindrical shape with an open upper surface, a drain portion 8 is formed on the outer bottom portion, a ventilation plate 9 is detachably attached to the inner bottom portion, and a handle 10 that is hung in an inverted U shape on the upper portion. Is provided. The drain portion 8 includes a drainage port 8b having a plurality of water passage holes 8a that do not allow brown rice to pass through, and a cap 8c that is screwed to the drainage port 8b, and functions as a drainage unit for the container. The ventilation plate 9 has a plurality of ventilation holes 9a large enough not to pass brown rice on the surface, a handle 9b for removal on the upper surface, and a leg portion 9c installed on the inner bottom surface of the material container on the back surface. In the attached state of the ventilation plate 9, a space A in which brown rice does not enter is formed on the bottom surface of the material container.

  The boiler 4 includes an aluminum water tank 4a that can store a predetermined amount of water, and a sheathed heater 4b that is attached to the lower surface of the water tank 4a and heats the water in the water tank. Is attached with a boiler temperature sensor 11 for detecting the temperature. The boiler 4 is fixed to the container housing part 2 via a heat insulating packing, and directly supplies steam into the container housing part 2. A part of the steam supplied from the boiler 4 is introduced into the material container 3, and the other is exhausted to the outside through an exhaust port 5 a opened on the upper surface of the lid 5. In addition, 5b is a handle for opening and closing the lid provided on the upper surface of the lid 5, and 12 is a handle for carrying the main body case 1 attached to the side surface of the main body case 1.

  An operation panel 14 having a control board 13 on the back surface is provided on the front surface of the main body case 1. As shown in FIG. 2, the control board 13 includes a buzzer 15, a timer circuit 16, and a heater control circuit 17, and includes a boiler 4, an outside air temperature sensor 6, a container temperature sensor 7, a boiler temperature sensor 11, and an operation panel 14. It is connected. As a result, the control board 13 accepts an input operation from the operation panel 14, performs heater energization control of the boiler 4 based on the signals of the temperature sensors 6, 7, 11 and performs timer control of the heating time. is there. The operation panel 14 includes a diamond key 18 for selecting a “Hitoshi” course, a germination key 19 for selecting a “germination” course, a time setting key 20 for setting an operation time of the germination course, and start / stop of the selected course. A start / stop key 21 for performing the above and a 7-segment display unit 22 for displaying the elapsed time in a countdown manner.

  In the present apparatus configured as described above, a method for producing germinated brown rice will be described. In the case of producing germinated brown rice with this apparatus, it is carried out by executing the “sprouting” course after executing the “Hitashi” course. As a preparatory step, a predetermined amount of water is put into the water storage tank 4a of the boiler 4, and a vent plate 9 is attached to the bottom of the material container 3 with the cap 8c. And is set in the container housing portion 2. When the start key 18 is input on the operation panel 14 and then the start / stop key 21 is input, the operation is started.

  The “Hitashi” course is a process in which the material container 3 is warmed by the steam generated in the boiler 4 and water is absorbed so that the stored brown rice can be germinated. The control board 13 proceeds along the flowchart shown in FIG. . When starting, the heater 4b of the boiler 4 is energized (1). At this time, the time TM required for display is displayed on the display unit 22 of the operation panel 14 and the timer circuit 16 starts measuring time.

  In the initial stage of the start, the heater 4b is operated with an energization amount W1 of 100% in order to quickly heat the inside of the boiler. Thereafter, when the boiler temperature detected by the boiler temperature sensor 11 reaches the temperature Bt1 (2), the time Tm1 elapses from that point (3), and the energization amount W2 of the heater 4b is lower than the energization amount W1. (4). Thereby, the inside of the boiler is raised to the steam generation temperature at once, and the generated steam warms the material container 3 from the surroundings while being supplied to the upper part of the container through the gap s1 between the container housing portion 2 and the material container 3. When the boiler is warmed to the steam generation temperature and the amount of electricity supplied to the boiler heater is reduced, the steam generation from the boiler is suppressed, and the steam staying above the container penetrates into the container when the current is low and the material is evenly distributed. Acts to heat.

  Thereafter, the container temperature sensor 7 is monitored to keep the temperature of the material container 3 at the temperature Ct1 while the heater 4b is operated at the low energization amount W2 (5). If it exceeds, the boiler heater 4b is stopped (6), and if it falls below the temperature Ct1, the operation of operating the boiler heater 4b with the low energization amount W2 (4) is repeated. While the heater is operating at such a low energization amount W2, when the elapsed time from the start of the process reaches a predetermined time (7), it is confirmed whether the heater 4b is energized (8), and the heater is not energized. For example, the process returns to the process (5) as it is, and if it is in operation, the heater 4b operated at the low energization amount W2 is switched to the energization amount W1 (9) and is operated for a time Tm2 (10). The processes (8) to (10) are executed every time the elapsed time from the start of the process reaches a predetermined time Tma, Tmb, Tmc, Tmd. As a result, the amount of steam generated changes intermittently, and the steam penetrates into the container each time it is in a low energization state. It is kept warm. When the container temperature is higher than the set temperature, this process is not performed. Therefore, when the capacity of the material accommodated in the container is small and it is easy to heat, there is no heating at the energization amount W1, and conversely the material If the capacity is large and difficult to be heated, the amount of heat is supplemented by heating with the energization amount W1, and good heating is performed regardless of the capacity.

  In this way, when the operation time TM of the “Hitashi” course has elapsed (11), the display on the display unit 21 becomes “0”, and the buzzer 16 is sounded to end. FIG. 4 shows the temperature change in the material container in the course of the present embodiment. The solid line shows the temperature change in the upper part of the container and the dotted line shows the temperature change in the lower part of the container. The upper part of the container is rapidly heated by 100% energization of the boiler heater at the beginning of the operation, but the energization amount of the heater is reduced after the boiler temperature reaches a predetermined temperature (Bt1). The temperature rise is suppressed as compared with the temperature change of the conventional apparatus, and thereafter, the boiler heater is operated around the low energization amount, so that a relatively stable temperature rise can be obtained at the upper part of the container. The temperature of the lower part of the container rises relatively slowly regardless of the energization state and the energization amount of the boiler heater. As a result, the temperature difference between the upper part of the container and the lower part of the container can always be kept small throughout the process, and the temperature difference in the container at the end of the process can be made small and can be brought close to the target set temperature.

  At the end of the “Hitashi” course, the brown rice is sufficiently absorbed and ready to germinate. Here, the material container 3 is once removed from the main body 1, the cap 8c of the drain part 8 is removed, and the water in the container is discharged. To do. At this time, if the brown rice after rinsing is washed with running water or the like, the generation of odor can be further reduced. Thereafter, water is added to the water storage tank 4 a of the boiler 4, and a small amount of water that does not touch the brown rice is put into the material container 3, and then the material container 3 is set in the main body case 1 again. At this time, since the space A in which the brown rice does not enter the bottom surface of the container is formed by the ventilation plate 9, the water can be set without touching the brown rice by putting a small amount of water into this space. After the germination key 18 is input on the operation panel 14, the desired germination time is set with the time setting key 19, and when the start / stop key 20 is input, the set germination time is displayed on the display unit 21 of the operation panel 14. Then, the “germination” course is started.

  The “germination” course is a step of germinating brown rice that has been absorbed by the sea urchin course while giving temperature, oxygen, and moisture by steam, and proceeds on the control board 13 according to the flowchart shown in FIG. When the operation starts, the heater 4b is operated with the energization amount W1 of 100% in order to quickly heat the inside of the boiler (12). Thereafter, when the boiler temperature detected by the boiler temperature sensor 11 reaches the temperature Bt2 (13), after waiting for the time Tm3 to elapse from that point (14), the energization amount W2 lower than the energization amount W1. (15). The steam generated by full energization of the heater 4b warms the container 3 from the surroundings, partially flows into the container, and the brown rice in the container is rapidly heated.

  Thereafter, control is performed to keep the container 3 at the germination temperature Ct2 based on the temperature detected by the container temperature sensor 7 while the heater 4b is operated at the low energization amount W2. Here, the germination temperature Ct2 is set as needed according to the outside air temperature detected by the outside air temperature sensor 6 (16), and is given by table data stored in a storage means (not shown) of the control board 13. This table data is set so that the germination set temperature Ct2 becomes lower as the outside air temperature is lower, and is determined based on experimental values.

  The heater 4b is monitored at the container temperature sensor 7 in a state where the heater 4b is operated at the low energization amount W2 so as to maintain the germination temperature Ct2 set in this way (17). Is stopped (18), and if it is lower than the germination temperature Ct2, the heater 4b is continuously operated with the low energization amount W2. After stopping the heater, the germination temperature Ct2 is reset again according to the outside air temperature detected by the outside air temperature sensor 6 (19). If the germination temperature Ct2 is exceeded, the heater 4b is kept stopped, and the germination temperature If it becomes lower than Ct2, it will return to a process (15) and will energize a heater with the low energization amount W2 (20). By such an operation, the water put in the bottom surface of the container is gradually warmed and becomes steam, giving moisture and temperature to the brown rice in the vicinity of the bottom surface of the brown rice accommodated in the material container 3. Humidity, temperature, and oxygen that are optimal for germination and growth will be supplied to the whole brown rice housed in the house.

  In the process (17), when the heater 4b is continuously operated, the heater energization time is monitored so as not to exceed the upper limit time Tm4 (21). This is to prevent brown rice from being cooked due to overheating. When the upper limit time Tm4 is exceeded, the heater is temporarily stopped even if the germination temperature Ct2 has not been reached ( 22). This heater stop state is terminated when the container temperature sensor 7 detects that the container temperature that has continued to rise and overshoots even after the heater has stopped (23), returns to the process (15), and returns to the heater 4b. Is operated at a low energization amount of the energization amount W2.

  Thus, when the germination course set time TM2 elapses (24), the display on the display unit 21 becomes “0” and the buzzer 16 is sounded to notify the end. When the “germination” course ends, germinated brown rice is obtained. The end notification by the buzzer 16 operates for 5 minutes every other minute until the start / stop key 20 is input.

  The germinated brown rice thus obtained showed almost no malodor due to various germs and rice bran as compared with the germinated brown rice obtained by a conventional production method in which water is kept warm in water for a long time. In addition, the germination rate was greatly improved and the time required for germination could be shortened. Furthermore, the germination rate between the upper part and the lower part in the container was not greatly different, and germinated brown rice could be obtained uniformly.

  In addition, although the germinating brown rice manufacturing apparatus was demonstrated as an Example of this invention, it cannot be overemphasized that it can apply also to a rice cake machine.

  It is possible to provide a cooking device with a diamond function that can easily produce germinated brown rice and rice bran at home. In particular, partial variations in temperature in the material container can be suppressed as much as possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. It is a block diagram in the same apparatus. It is a flowchart figure which shows the operation | movement by the apparatus. It is explanatory drawing which shows the temperature change in the container in operation. It is a flowchart figure which shows the germination operation | movement with the apparatus. It is an internal sectional view showing a conventional cooking device with a diamond function. It is explanatory drawing which shows the temperature change in the container in operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 2 Container accommodating part 3 Material container 4 Boiler 4b Boiler heater 5 Cover body 6 Outside temperature sensor 7 Container temperature sensor 11 Boiler temperature sensor 13 Control board (control means)
14 Operation panel 17 Heater control circuit (switching means)

Claims (4)

A main body case is provided with a material container in which cereal and water are stored, a boiler that generates steam, and a boiler temperature sensor that detects the temperature of the boiler, and the cereal and water are heated by steam from the boiler to produce cereal. A cooking device that can perform water-absorbing diamond cooking, and that controls the energization amount of the boiler between full energization and an energization amount less than full energization, and controls the energization switching means at a predetermined timing during execution A cooking device with a diamond function. The control means operates the boiler with full energization during a period from when the boiler temperature sensor detects a predetermined temperature until the predetermined time elapses until the boiler temperature sensor detects that the predetermined temperature has elapsed. 2. The cooking apparatus with a diamond function according to claim 1, wherein the cooking apparatus is operated with an energization amount. The above-mentioned control means, wherein the boiler is fully energized for a certain period of time when the elapsed time from the start of the process reaches a predetermined time in a period in which the boiler is operated with a smaller energization amount than the total energization. The cooking apparatus with a diamond function according to 2. A container temperature sensor for detecting the temperature of the material container, and the control means operates the boiler with full power supply regardless of the temperature detected by the container temperature sensor during a period when the boiler is operated with full power supply; 4. The energization / non-energization of the boiler is controlled based on a temperature detected by the container temperature sensor during a period in which the energization is operated with a smaller energization amount than the total energization. A cooking device with a function.

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