JPH09182663A - Rice cooker for industrial rice cooking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate need for space for opening/closing a cover device by forming an opening part from which cooking material is charged into an inner tank at a center part of an upper cover to cover an upper surface opening of the inner tank, and fitting the closing device for setting this opening part in a closed condition at the time of cooking to be movable only in parallel directions to a pair of guide rails. SOLUTION: Right under a rice washing tank 5, a pair of guide plates 28 fixed to a side surface of a drain jacket 17, and a member 31 of which lower end is fixed to a shutter rail 30 formed on an upper surface of an upper cover 29 to be vertically slidable are fitted, and the upper over 29 is installed on an opening arm 34 pivotally supported on a pin 33 formed on this member 31 to be opened/closed in a perpendicular direction. This upper cover 29 is opened/closed by the opening arm 34, so an inserted inner tank 35 is tightly closed, and it can be held by a hook 36 at an opening position. At a center part of the upper cover 29, a rice and water inflow port 37 is opened, and this inflow port 37 is opened/closed by a shutter which can be freely opened/ closed by a swing arm 40 driven by a motor 38.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker, and more particularly to a rice cooker for a commercial rice cooker.

[0002]

2. Description of the Related Art Conventionally, various proposals for an automatic rice cooking device have been made, but most of them are for small-sized household use, and their use frequency, processing amount, and operability are not intended for commercial use. There are great differences, and they are of different dimensions in terms of practicality and continuity.

Therefore, as an automatic rice cooker that can be used for business use, there is a technique disclosed in Japanese Patent Laid-Open No. 62-26031. This rice cooker for business uses a rice storage unit for storing rice, a measuring unit for measuring and discharging rice in the rice storage unit, a rice washing unit for washing rice discharged from the measuring unit, and a rice washing unit for discharging rice. The rice cooker has a rice cooker for cooking rice, and the rice cooker employs a rice cooker having an upper lid that opens and closes with a hinge as a fulcrum.

[0004]

According to the conventional example in which a rice cooker having an upper lid that opens and closes around a hinge as a fulcrum is used in a commercial rice cooker, there are the following problems. If the rice cooker is placed directly below the rice washing unit coaxially and you try to add rice to the rice cooker, the upper lid will open and close with the hinge as a fulcrum, so if you try to fully open the upper lid, the rice washing unit and the rice cooker The vertical spacing becomes large, the overall height becomes large, the weight balance of the device is easily lost, and it becomes difficult to install the kitchen room. When the total height of the apparatus becomes large, the rice storing section is usually provided on the rice washing section, so that the work of supplying rice to the rice storing section becomes very troublesome.

Therefore, an object of the present invention is to provide a rice cooker for a commercial rice cooker that can solve the above problems.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a commercial rice cooker comprising a rice washing section and a rice cooker having an inner pot for cooking rice discharged from the rice washing unit. An opening is provided in the center of the upper lid that covers the opening, and the rice cooking material such as rice is put into the inner pot with the upper lid being closed.
The rice cooker for business use is characterized in that the obturator that closes this opening when cooking rice is provided on a pair of guide rails fixed to the upper lid along both sides of the upper lid so as to be movable only in the horizontal direction. The rice cooker for a device solved the above-mentioned subject.

That is, when the rice and water from the rice washing section 5 are put into the rice cooker 44, a shutter (obturator) 41 provided on the upper lid 29 of the rice cooker 44 arranged immediately below the rice washing section 5 is provided. Is opened by horizontal movement in the horizontal direction, and is introduced from the inflow port (opening) 37. After pouring rice and water into the rice cooker 44, the horizontal movement of the shutter 41 closes the inflow port 37 to shift to the rice cooking process.

As a result, it is not necessary to rotate the upper lid 29 around the hinge, and the overall height of the device can be reduced. When the inlet 37 is closed by the shutter 41, the shutter rail 30 prevents the shutter 41 from accidentally coming off due to the pressure during rice cooking.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described with reference to the drawings showing the embodiments thereof. The rice storage tank (part) 1 arranged at the top in FIG. A metering device (measuring unit) 2 is connected to the bottom of the tank 1. The metering device 2 shown in the present embodiment is a drum type rotating in one direction by the electric motor 3, and a predetermined amount of the raw material is quantitatively divided according to the number of revolutions while keeping the inner volume constant, and the material is dropped downward. According to the pulse counting method, which is controlled by transmitting the set value pulse of the counter set by 21.

On the other hand, a funnel-shaped raw material chute 4 is arranged immediately below the metering device 2, and a raw material supply port 7 is opened through a top plate 6 of a rice washing tank 5 serving as a rice washing section. The rice washing tank 5 is composed of a cylindrical body whose lower part is formed in an inverted cone shape (funnel shape), and a hollow rotating shaft 9 provided with a plurality of stirring blades 8 each having a different rotation radius is installed at the axial center position of the tank. It is rotatably arranged by an electric motor 11 via a bearing 10 which penetrates through 6. On the other hand, a shaft bar 13 which is inserted coaxially with the hollow shaft 9 and is vertically movable by a rotary cam mechanism 12 provided above the top plate 6 and a lower end of the shaft bar 13 at the bottom of the rice washing tank 5. An outlet 15 for opening and closing the raw material and the cooked water is provided with a conical valve 14 fixed to.

Further, above the outflow port 15, there is provided a separation plate 16 having an inverted conical shape having a large number of water passage openings, and the separation plate.
A ring-shaped drainage jacket 1 provided to surround 16
7 and a top plate 16 are connected to each other at a lower portion thereof, and an overflow port 18 is provided. A side pipe 19 is opened in communication with the outer peripheral surface of the drainage jacket 17, a float 20 for detecting a rise in the water level in the pipe is enclosed, and the rice cooking water level in the rice washing tank 5 is moved up and down in conjunction with a quantitative dial mechanism 21. Sensor 2 that can move freely
It is constituted so that it can be detected and adjusted by 2. In addition, a plurality of water sprinkling holes 23 are provided in the upper part of the rice washing tank 5 through the top plate 6 to open.

As shown in FIG. 2, in addition to the side pipe 19 on the outer peripheral surface of the drainage jacket 17, a drainage pipe 25 for draining the wash water to the outside of the system through a drain valve 24 which can be opened and closed and an upper portion into the rice washing tank 5 are provided. A water supply port 2 which is open for communication via a solenoid valve 26 in order to generate a countercurrent and discharge the floating pollutants from the overflow port 18 to the outside of the system.
7 and 7 are provided respectively. As shown in FIG. 1, a pair of guide plates 28 fixed to the side surfaces of the drainage jacket 17 and a lower end held by the guide plates are fixed to a shutter rail 30 provided on the upper surface of the upper lid 29 immediately below the same axis of the rice washing tank 5. A lid 31 that is vertically slidable by a member 31 that is slidable up and down and a pin 33 that has a fulcrum 32 and that is provided on the member 31 is vertically extended and extends forward. 29 is mounted right under the rice washing tank 5.

The upper lid 29 is opened and closed with a stroke H by an opening / closing arm 34 so as to seal the inserted inner pot 35 and hold it by a hook 36 in its open position as shown by the dotted line in the drawing. 34
And the like constitute upper lid opening / closing means. Therefore, at the time of rice cooking, a space in the vertical direction of at least stroke H or more is formed between the upper lid 29 of the rice cooker 44 and the conical valve 14 of the rice washing tank 5 to vertically and vertically separate the space from each other. It is communicated in the direction.

As shown in FIG. 3, an inlet 37 for water and water is opened at the center of the upper lid 29, and the inlet 37 is a fulcrum 3
Swing arm 40 having 9 and driven by electric motor 38
A shutter 41 that can be opened and closed by means of is configured to be openable and closable. The shutter 41 horizontally moves the stroke H1 using the shutter rail 30 provided on the upper lid 29 as a guide to slide the inflow port 37, and the inflow port 37 is closed by the shutter 41 and sealed. A shutter 42 is provided to prevent the shutter 41 from coming off due to the pressure during rice cooking, and a sensor 42 for detecting opening / closing of the shutter is provided.

That is, a rice cooking material such as rice is placed in the central portion of the upper lid 29 that covers the upper opening of the inner pot 35.
An opening portion 37 is provided which is inserted into the inner pot in a state of being covered with a lid, and an obturator 41 for closing the opening portion 37 during rice cooking is provided.
The pair of guide rails 30 fixed to the upper lid along the both sides of the opening 37 on the upper surface of the upper lid are movably provided only in the horizontal direction.

In the commercial rice cooker using the rice cooker according to the present invention, the outflow curve of rice and water flowing out when the conical valve 14 provided at the bottom of the rice washing tank 5 is opened is a dotted line 43 in FIG. As shown, it has a parabolic shape with an extended conical surface. Therefore, the diameter of the opening 37 provided in the upper lid 29 is determined so as not to intersect with the parabola in the closed position of the upper lid.

The operation mode of the commercial rice cooker using the rice cooker according to the present invention configured as described above will be described with reference to the drawings showing an embodiment thereof. In FIG.
The rice cooker 44 mounted with 5 is pushed into the cooking cabinet by a stand 45 that can be pulled out in the front-rear direction and moved to a rice cooking position directly below the axis of the upper lid 29.
To close the inner pot 35 and close the upper lid 29.
The inflow port 37 formed in the above is opened by the shutter 41. Here, the inner pot 35 is detected by the sensor 46.

Then, by setting the fixed quantity dial 21 to the required amount of cooked rice, the pulse counter for controlling the rotation speed of the constant quantity machine 2 is selected and the sensor 22 for detecting the float 20 for detecting the water level in the side pipe 19 is moved. Then, the water level adjusting point 47 in the rice washing tank 5 necessary for cooking rice is determined. By pressing the start button, the metering device 2 is rotated and the raw material in the rice storage tank 1 is quantitatively sorted and dropped into the rice washing tank 5 through the chute 4 through the raw material supply port 7. At the same time, the electric motor 11 is started to rotate the stirring blade 8 at a slow speed, and the solenoid valve 48 communicating with the pressure water system is opened to open the plurality of water spray ports 2.
Water supply starts from 3 and the rice washing process begins. The waste water that has accumulated in the rice washing tank and passed through the agitated raw material layer to become the rice washing polluted water passes through the separation plate 16 provided at the bottom and is drained through the drain jacket 17, the drain pipe 25, and the drain valve 24. Mouth 4
It is drained to the outside of the system from 9.

Then, the water supply is temporarily stopped by the previously entered rice washing program, and the rice polishing process is started. After the predetermined rice polishing process, water sprinkling is restarted to drain the polluted water. After repeating the above steps, the drain valve 24 shown in FIG.
Is closed and the water supply is started from the water supply port 27 communicating with the drainage jacket 17 through the electromagnetic valve 26. The water supply becomes an upward flow upward in the rice washing tank 5 due to the closing of the drainage valve 24, overflows from the overflow port 18, drains through the drain pipe 50 and the drain box 51, and is drained to the outside of the system from the drain port 49. When a predetermined overflow time has elapsed, the electromagnetic valve 26 is closed and the drain valve 24 is opened, so that the wash water stored up to the overflow point in the tank is discharged out of the system all at once.

After the rice washing process is completed, the drain valve 24 is closed and the solenoid valve 48 is opened to start the water supply in the water addition process. In the process, the circuit of the water level detection sensor 22 is turned on, the float 20 in the side pipe 19 rises as the water level in the rice washing tank 5 rises, and the solenoid valve 4 at the water level detection point 47.
8 is closed and water supply is stopped. Then, the cam type opening / closing mechanism 12 provided above the shaft 13 is rotated by the output signal of the sensor, and the conical valve 14 for closing the outlet 15 at the bottom of the rice washing tank is dropped for a predetermined stroke to provide the raw material and the cooking water on the upper lid 29. It is charged into the inner pot 35 through the inlet 37, and when the supply is completed, the shutter 41 is moved laterally to close the inlet 37.

The inflow port 37 is the shutter 4 during rice cooking.
It is sealed by 1, and the shutter 41 is prevented from coming off due to rice cooking pressure by the engagement of the rail 30,
Upon receiving the output signal of the sensor 22, the electric motor 38 temporarily opens the opening and automatically seals after a predetermined time. Upon completion of the outflow of the raw material, the conical valve 14 returns to the original position by the rotation of the cam opening / closing mechanism 12 and seals the outflow port 15.

Then, the water absorption time of the raw material is restricted by the timer excited when the completion of rice discharging is detected, and after a predetermined time elapses, the burner (not shown) of the rice cooker 44 is ignited by the output signal of the timer to start the rice cooking process. . The heat in the rice cooker during rice cooking is not affected by the heat of the rice cooker in the heat insulation space. The combustion gas is supplied by a pipe line opened and closed by a gas solenoid valve (not shown), which is opened by the output signal of the timer and which detects the bottom surface temperature of the inner pot 35 (not shown). It is configured to be shut off by.

Completion of the rice cooking process is detected by the thermostat, the burner extinguishes, and a separate timer operates to restrain the steaming time. After the elapse of a predetermined steaming time, the completion of rice cooking is notified by the output signal of the timer, and the series of operation steps in the device of the present invention is completed. In addition, in the rice cooker arranged below the rice washing tank, during each process such as water absorption, rice cooking, steaming of raw materials and after rice removal, lift the upper lid, pull out the inner pot, and set an empty inner pot. Until then, the shutter 41 is electrically interlocked so that it is not opened, and the conical valve 14 is opened by the output signal of the sensor 42 that detects the opening of the shutter. Can be completely prevented.

Further, the apparatus of the embodiment makes it possible to fully automatically perform a series of operations from the weighing of raw materials to the completion of rice cooking by only inputting a start signal, and continuously and automatically processing a large amount of rice. It also has a function capable of performing. That is, the output signals of the water level detection sensor 22 for completion of water addition and reduction, the sensor (not shown) for detecting the opening of the conical valve 14 and the sensor (not shown) for detecting the sealing of the conical valve are used for the cascade. The above-mentioned start pulse is generated and the device is automatically restarted to allow the rice cooker arranged below to move the rice washing process in the upper rice washing section while the rice cooker is in operation. Since the standby time for absorbing water can be given to the raw material, the operations of washing rice and cooking rice can be continuously processed in a single device.

[0025]

The present invention is as described above. According to the present invention, a space for opening and closing the obturator is not required, and since the obturator is attached to the upper surface of the upper lid, the open / closed state can be easily visually checked. In addition, it can be achieved by simply processing the top lid of the rice cooker that is normally sold, and even if the obturator moves upward during rice cooking, this movement is reliably stopped by the rails The overall height can be reduced and the above-mentioned problems can be solved without adversely affecting it.

[Brief description of the drawings]

FIG. 1 is a side view showing an arrangement of internal mechanisms according to an embodiment of the present invention.

FIG. 2 is a front view showing the embodiment of the present invention.

FIG. 3 is a plan view illustrating an embodiment of the present invention by partially cutting away.

[Explanation of symbols]

 5 Rice Storage Section 29 Upper Lid 30 Guide Rail 37 Opening 41 Closure Tool 44 Rice Cooker

Claims (1)

[Claims] 1. A commercial rice cooker comprising a rice washing unit and a rice cooker having an inner pot for cooking rice discharged from the rice washing unit, wherein a central portion of an upper lid for covering an upper opening of the inner pot. An opening is provided to insert rice or other rice cooking ingredients into the inner pot with the upper lid covered with the inner lid. A rice cooker for a commercial rice cooker, which is provided on a pair of guide rails fixed to the upper lid so as to be movable only in the horizontal direction.