JPH0345220A - Automatic rice boiler - Google Patents

Abstract

PURPOSE:To eliminate a water overflow at the time of power interruption, and prevent steam and pressure leakage due to the adhesion of rice by providing a pan for storing a heated and cooked material such as rice, a valve capable of freely opening and closing the bottom opening of a rice washing vessel and a rotary mechanism for turning the valve after the opening thereof. CONSTITUTION:Rice is measured with a measurement device 41, carried up to a level above a rice washing vessel 53 with a transfer device 46 and discharged into a rice washing vessel 53. Thereafter, water is jetted from a feed water nozzle 68 and a valve 54 is opened in the predetermined time. As the valve 54 turns thereafter, the washed rice is fed into a pan 50 due to a centrifugal force. Also, even if power supply is interrupted, the measurement device 41 and the transfer device 46 come to a stop condition, and the rice and water are not added to the rice washing vessel 53, thereby ensuring the freedom of the vessel from a water overflow.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an automatic rice cooker that automatically adds water.

Conventional technology A conventional automatic rice cooker is disclosed in Japanese Patent Application Laid-open No. 49-132273, for example.
It had the configuration shown in FIG. 4 shown in the publication.

In the figure, 1 is the container of the automatic rice cooker, 2 is the rice bowl 2.
7 Trough case, 3 is a rice measuring device, 4 is an electromagnet that operates the measuring device, and the measurement is fixed depending on the number of operations. Reference numeral 5 denotes a water reservoir provided at the lower part of the measuring device 3, which communicates with the adjacent water tank 6 through a number of holes 7 that do not allow water to pass through, but the holes 7 may be in the form of slits. Numeral 8 is a water pipe for sending water into the water tank 6, 9 is a valve, and 1o is a float, which keeps the water level in the water tank 6 constant. 11 is a water level surface, 12 is a rice washing tank and a screw for transferring washed rice, 13 is a motor, 14 is a transport pipe, 1
Reference numeral 6 denotes an outlet of the transportation pipe, which is arranged at the upper part of the housing portion of the pot 17 which can be attached to and detached from the container body 1, and is fixed to a lid body 18 that seals the pot 17 when the pot 17 is housed in the container body 1. and expose it to the inside of the lid body 18. 16 is the outlet 15 of the transport pipe
The transportation pipe 16 is exposed inside the pot 17 which is sealed with the cover body 18, and the one tray pot 17 is
Even when cooking rice in
This is to prevent backflow to the 4th side. 19 is pot 17
0 The holes are small enough to prevent rice grains from flowing out,
This hole 19 may have a slit shape and may have a diameter of 3. 20 is a backing attached to the periphery of the lid 18; 21 is a sealing body that seals the hole 19 made in the lid 17; the sealing body 21 seals the hole 19 when cooking rice in the pot 17; Additionally, rice can be cooked without water flowing out from the holes 19 even in the pot 17 where the holes 19 are present. 22 is a spring that presses the sealing body 21 against the hook 17; 23 is an electromagnet that separates the sealing body 21 from the hook 17; 2;
4 is a drainage channel, which is tubular. Patsukin 25 at the opening
When the backing 25 is attached to the outer wall around the hole 19 of the pot 17, excess water contained in the pot 17 flows out as an overflow. It is arranged integrally with the heat insulating board 34 so as to surround the entire circumference of the pot 17. Reference numeral 26 denotes a drainage and water level adjustment pipe, which is attached to the drainage channel 24 so that it can be raised and lowered without leaking water. 2γ is the drainage and water adjustment pipe 2
The water level for cooking rice can be adjusted by aligning the lower end 28 of the water passage hole 6 with the height of the rice cooking water in the pot 1γ. 29 is a rack installed in the drainage and water level adjustment pipe 26, 3o is a pinion that meshes with the rack 29,
The amount of water is determined at the same time as rice is measured in conjunction with the activation switch of the electromagnet 4 of the rice measuring device 3. 32 is a drain pipe, 3
3 is a malfunction prevention switch that prevents water flow from flowing into the pot installation area when the pot 17 is not present; 24 is a heat insulating board; the part of the heat insulating board 34 that contacts the bottom of the pot 17 is equipped with an electric heater, etc. A heater will be installed.

36 is the lid of the rice stock cane 2.

The operation of the automatic rice cooker having the above configuration will be explained. 1. First, a desired amount of rice is measured by activating the electromagnet 4, and the discharge and water level adjustment pipe 26 is raised and lowered to bring the lower end 28 of the water passage hole 27 to the height of the water level in the pot 17. Rice weighed by a weighing device 3 falls into a water reservoir 5 where a constant water level is stored. At the same time, if you take some time to drive the motor 13 and rotate the screw 12, the rotation of the screw 12 will wash the rice that has fallen into the water reservoir, and the rotation of the screw 12 will wash the rice. The water rises up the transport pipe 14 and flows into the pot 17 from the outlet 15. As this water moves, rice grains also move through the transport pipe 14 and are sent to the pot 17. In this case, according to the experimental results, if the flow rate in the water reservoir section 5 is 5 ctn per second, the rice will rise vertically in the transport pipe 14. The excess water that has flowed into the pot 17 along with the rice is drained through the hole 19 and the drainage channel 242 through the water passage hole 27. Drainage and water adjustment pipe 26. When the water is drained in the order of the drain pipe 32 and all the rice is sent to the pot 17, the motor 130 rotations are stopped by a timer or the like built in the vessel body 1.

Then, the supply of water to the transport pipe 14 is stopped.
Water in the pot 17 above the lower end 28 of the water passage hole 27 is discharged through the hole 19. At this point, the attractive force of the electromagnet 23 is released and the sealing body 21 completely seals the hole 19 of the pot 1γ by the force of the spring 22. Next, after about 10 minutes of immersion using a timer built into the container 1, the heating element is used to cook the rice in the same manner as in the past.

Problems to be Solved by the Invention However, conventional automatic rice cookers have had the following problems.

(1) When rice is put into the pot 17, water adheres to the rice and the surface of the rice spreads. When rice is cooked in the house 1, steam and pressure may flow back into the transport pipe 14 through the gaps, staining the inside of the container 1 with slime and hot steam.

(2) Since the rice is sent into the pot 17 along with the water flow, when the motor 13 stops due to a power outage, etc., the rice and water in the transport pipe 14 will flow backwards, causing the rice and water to overflow into the pot. There was a risk of short circuits due to flooding of electrical connections, etc.

In view of the above-mentioned problems, it is an object of the present invention to prevent water from overflowing even during a power outage, and to prevent leakage of steam and pressure caused by rice adhesion.

Means for Solving the Problems In order to achieve the above object, the present invention includes: a measuring device for weighing stored rice; a transfer device for transferring the rice from the measuring device to a rice cooking section; A pot for storing food to be heated such as rice, a lid body covering the top opening of the pot,
A cylindrical rice washing container disposed approximately in the center of the lid, a valve that allows the bottom opening of the rice washing container to be opened and closed, and 7 +, -, after opening the valve.

It is equipped with a rotation mechanism that rotates the valve.

Effect According to the first technical means described above, the rice is weighed, transported by the transfer device on the top surface 1 of the rice washing container, the rice is put into the rice washing container, and then water is jetted out from the water supply nozzle for a certain period of time. The valve is then opened, and as the valve rotates, the washed rice is placed into the pot by centrifugal force.

At this time, by appropriately setting the rotation speed of the valve, the rice can be dropped into the pot at an even height.

Furthermore, according to the second technical means, even if there is a power outage, the measuring device and the transfer device are stopped, and the rice and water are not added to the rice washing container while the rice and water are still in the rice washing container. Water will not overflow from the rice washing container.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the figure, 40 is a rice bin for storing rice, 41 is a measuring device for measuring rice, 42 is a solenoid that operates the measuring device 41, and 43 is a shaft that supports the measuring device.When the solenoid 42 is energized, the measuring device 41 is activated. The rice jug 40 side is opened, and the lower end is closed, so that the rice enters the measuring device 41 and is volumetrically measured. Reference numeral 44 denotes a rice polishing machine having a cylindrical shape and having spiral bristles planted on its surface, and is rotated by a motor 45. Reference numeral 46 denotes a transfer device, which in FIG. 2 is a belt made of soft resin that rotates counterclockwise, and has a large number of protrusions 47 on its surface. The transfer device 46 is stopped from rotating by a motor (not shown). 4
Reference numeral 8 denotes a main body in which a rice cooking section 49 is arranged so that it can be pulled out and stored on a slide rail or the like. 50 is a pot for storing food to be heated such as rice. 51 places the pot 60,
It is a heating means for heating. Reference numeral 52 denotes a lid that covers the upper opening of the pot 50, and a cylindrical rice washing container 53 is disposed in the center thereof. Reference numeral 54 designates a valve that can open and close the bottom opening of the rice washing container 53, and has a conical shape with a hole 66 in the center.

A net 56 is disposed at a constant distance A from the cone of the valve, and is detachably fixed to the valve 54 by a ring 67 which is fitably attached to the cylinder 58 of the valve 54. The ring 57 may be fixed to the cylinder 58 with screws or the like. 59 is valve 5
A ring-shaped gasket 9 having a tip of a lip 59a fixed to the outer periphery of the rice washing container 53 contacts the inner periphery of the rice washing container 53 with a constant pressure. The packing 59 is made of silicone rubber or the like.

Reference numeral 60 is a hole provided at the bottom of the cylinder 58 and is fixed to the threaded portion of the shaft 61 via a nut 83. The solid shaft 61 is rod-shaped, has a head shaped like the head of a nail, has a screw-like spiral shape 61a at the bottom, and has a spring 62 fixed to the head. The spring 62 is dimensioned to expand and contract the outer surface of the solid shaft 61 and the inner peripheral surface of the shaft support cylinder 63. The shaft support cylinder 63 is detachably attached to the upper surface of the rice washing container 63 via a screw or the like. Further, although the shaft 61 passes through the bottom surface 64 of the shaft support cylinder 63, there is a hole 63 through which the spring 62 cannot pass.
A is provided. This hole 63a has a nut shape for receiving the threaded portion of the solid shaft 61, and rotates the solid shaft 61 when the shaft is moved downward. Reference numeral 65 denotes a side hole provided on the side surface of the rice washing container 53, and a rice washing net 66 that allows water to pass through but does not allow rice to pass through is fixed in the hole. Rice washing net 6
6 may be a slit. 67 is a drainage pipe provided in the rice washing container 53. 68 is rice washing container 53 containing rice 1
0+, -, -7 A water supply nozzle that sprays water onto the rice after the rice has been heated is a hollow ring-shaped cylinder 69 into which water enters at one end, and is connected to a water supply tank 71 via a pump 70.

72 is a hole in the inner circumferential direction of the rice washing container 53, and 73 is a hole in the center direction of the rice washing container, and a plurality of holes are provided in the water supply nozzle 68. 74 is a water supply valve that supplies water to the tank 71 via the water supply pipe 75. A push rod 75 pushes the head of the shaft 61 downward, and is operated by a solenoid 7 through a solenoid link 76. 78 is a spiral that moves the rice carried by the belt 46 on the upper surface 1 of the rice washing container 53, and is rotated by a drive motor 79. 8Q is a drainage frame that guides the water after washing the rice to the drainage pipe 81 via the drainage pipe 67. 8
2 is a control unit which includes the above-mentioned motor 45, 79° pump 70.
Solenoid 42. 77, water supply valve 74° heating means 5
Control the first prize.

The operation of automatic rice cooking in the above configuration will be explained.

When the amount of rice to be cooked is set by operating the control unit 82, the solenoid 42 operates according to the amount, and after measuring a predetermined amount of rice, a part of the surface of the rice is polished by the rice grinder 44, and then sent to the transfer device 46. It will be done. The rice is carried to the upper part by the protrusion of the transfer device 46. Thereafter, the rice is carried into the upper surface of the washed rice container 53 by the spiral γ8.

The valve 64 and the solid shaft 61 are fixed at the bottom via a nut 83, and the spring 62 applies an upward force to the shaft 61, so that the valve 54 is held in place by the gasket 5 at the bottom of the rice washing container 53.
Close via 9. Therefore, when a certain amount of rice reaches a certain level in the rice washing container 53, water is jetted out from the water supply nozzle 68 and washing of the rice is started.

Depending on the amount of rice polished by the rice polishing machine 44 described above, this amount of water may be small. Furthermore, the taste of the rice may be adjusted by changing the amount of rice polished depending on differences in rice, such as old rice and new rice.

By directing the water jet from the water supply nozzle 68 toward the inner periphery and center of the rice washing container 68, water is sprayed uniformly over the top surface of the rice, allowing for efficient rice washing.
Dirty water is drained through the screen 56 and the valve 54.
It flows into gap A and is separated from the rice. This idea is similar to the opening of a colander, which is done to improve drainage during rice cooking and to prevent dirty water from being reabsorbed into the rice. Water after washing the rice is discharged to the outside of the main body 48 through a water control pipe 67.

After washing the rice, the valve 54 is moved downward through the solid shaft 61 by the action of the push rod 75 due to the load of the solenoid 77.
The bottom of the rice washing container 63 is opened.

The valve moves downward under the load of the push rod 76 and stops at the maximum compression position of the spring 62, but the solenoid 7
In order to properly set II during operation of 7, rice is 6
6 can be easily and smoothly dropped into the sliding pan 50.

By repeating the above steps depending on the amount of rice to be cooked, it is possible to wash rice according to the amount of rice to be cooked.

Thereafter, the water supply valve 74 and the pump 70 are controlled to supply a predetermined amount of water, and at the same time as water is spouted from the water supply nozzle 68, the valve 54 is opened, and rice cooking water is poured into the pot 60 as set and rice cooking starts.

Effect of the invention As described above, according to the present invention, the following effects are achieved.

(1) By installing a rice-washing container on the lid and supplying water from the top of the rice-washing container, water and rice, etc. are retained in the state at the time of a power outage even in the event of an abnormality such as a power outage, and backflow is prevented. This prevents electric shocks from contaminated electrical parts such as buttons and motors inside the main unit due to flooding.

(2) By opening the valve from the rice washing container and rotating it, the centrifugal force allows the rice to be smoothed into the pot, and also prevents rice from remaining between the bottom of the rice washing container and the valve gasket, thereby reducing the gap. It can be completely eliminated and prevents steam leaks and pressure leaks during rice cooking.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a main part of an automatic rice cooker, FIG. 2 is a longitudinal sectional view of the same, FIG. 3 is a longitudinal sectional view of the main part, and FIG. 4 is a longitudinal sectional view of a conventional automatic rice cooker. 40... Rice bin, 41... Measuring device,
46... Transfer device, 48... Body, 51
... Heating means, 52 ... Lid body, 53 ...
... Rice washing container, 54 ... Valve, 61 ...
・Solid shaft, 61a...Spiral shape, 63・
...Shaft support tube, 63a...hole.

Claims (1)

[Claims] It has a measuring device that weighs the stored rice, and a transfer device that transfers the rice from the measuring device to a rice cooking section, and the rice cooking section includes a pot for storing food to be heated such as rice, and a pot for storing food to be heated such as rice. A lid body that covers the top opening, a cylindrical rice washing container placed approximately in the center of the lid body, a valve that allows the bottom opening of the rice washing container to be opened and closed, and after opening the valve, the valve is closed. An automatic rice cooker equipped with a rotating mechanism.