JP2012130614A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker capable of constantly keeping time for soaking rice in water appropriate.SOLUTION: Water in a jar 5 is discharged through a slide tube 90, a projection tube 87, a longitudinal hole 57, a latitudinal hole 59, a discharge hole 105, and a discharge hose 109 by siphon action even after a check valve 73 is closed. When the water is discharged, air is flown from an air inflow hole 75 to the jar 5, thus, the discharged water does not remain. When a water surface reaches an air hole 95 of the slide tube 90, the air enters the slide tube 90 from the air hole 95. Thus, discharge of the water by the siphon action is stopped. Since a base end part of the slide tube 90 is adjusted to a scale indicating "3" corresponding to 3 Gou (about 540 cc) of rice, and the water level (volume of water) in the jar 5 corresponds to the 3 Gou of rice. Then, the rice R is soaked for a predetermined amount of time, for example, one hour.

Description

  The present invention relates to a rice cooker, and relates to a rice cooker capable of appropriately managing the time for immersing rice in water.

  In general, in order to obtain delicious rice, it is known that rice should be immersed in water, cooked after water is added, and an appropriate immersion time is about 1 hour at a water temperature of 20 ° C. It is said that there is.

JP2010-125028

  However, for example, when cooking rice for breakfast, sharpen the rice the night before, put it in a rice cooker with a predetermined amount of water, and set a timer so that rice cooking is completed at the desired time the next morning is doing. In this case, the rice usually remains soaked in water for 6 hours or more, which not only makes it unfavorable, such as excessive gelatinization, but may also cause the rice to rot depending on the temperature.

As for the current rice cooker, as shown in patent document 1, what is aiming at shortening immersion time and shortening rice cooking time is mainstream, and it is the reality that there is nothing which can adjust immersion time too long. It is. In addition, there are those that try to adjust the state of cooking by microcomputer control, but there is a limit to the adjustment, and it is impossible to cope with the corruption of rice.
The present invention has been made paying attention to the above-mentioned conventional problems, and an object of the present invention is to provide a rice cooker that can always make the time for immersing rice in water appropriate.

  The present invention has been made to solve the above-mentioned problems, and the invention of claim 1 includes a rice cooker body, a pot accommodated in the rice cooker body, a heater for heating the pot, A water supply pipe provided in the rice cooker body and capable of opening and closing in a state where the upper surface opening of the pot is closed and opened; a water supply pipe penetrating the cover and entering the pot; and connected to the water supply pipe An on-off valve, an on-off valve control means for closing the on-off valve after opening for a predetermined time, a timer for setting a time for starting the on-off valve control means, and water is supplied into the kettle from the water supply pipe for washing the rice. A drainage pipe for discharging the water in the kettle, a drainage amount regulating pipe for draining the water in the kettle by siphon action until the water quantity reaches a preset level after the supply of water from the water supply pipe is stopped, and the heater Heater control to operate for a predetermined time A rice cooker, characterized in that it comprises the stages.

  The invention of claim 2 is the rice cooker according to claim 1, wherein the drainage amount regulating pipe projects into the kettle toward the bottom of the kettle and is connected to a communicating pipe communicating with the outside of the kettle, and the projection A rice cooker comprising a slide tube that is slidably attached to a tube in a vertical direction and that can be fixed at a desired position.

  The invention of claim 3 is the rice cooker according to claim 2, wherein the protruding tube is provided with a scale indicating a water level corresponding to the amount of rice to be cooked, and the water level is obtained by matching the base end of the slide tube to the scale. It is a rice cooker characterized by being able to set.

  According to a fourth aspect of the present invention, in the rice cooker according to the second or third aspect, a check valve is provided in the middle of the protruding pipe or the drain pipe to prevent the drainage from flowing back into the pot. It is a rice cooker.

  According to the rice cooker of this invention, the time which immerses rice in water can always be made appropriate. Accordingly, it is possible to prevent the rice from becoming unpleasant, and there is no possibility that the rice will rot during soaking.

It is a perspective view of the rice cooker which concerns on embodiment of this invention. It is a figure for demonstrating operation | movement of the rice cooker of FIG. 1, and is a figure which shows the state by which water was supplied in the pot. It is an enlarged front view of the protruding tube and slide tube with which the rice cooker of FIG. 1 is equipped. It is a figure for demonstrating operation | movement of the rice cooker of FIG. 1, and is a figure which shows the state by which rice washing is performed in a pot. It is a figure for demonstrating operation | movement of the rice cooker of FIG. 1, and is a figure which shows the state from which the water in a pot is discharged | emitted by a siphon effect | action. It is a figure for demonstrating operation | movement of the rice cooker of FIG. 1, and is a figure which shows the state which the water in the pot stopped at the predetermined | prescribed water level.

The rice cooker 1 which concerns on embodiment of this invention is demonstrated according to drawing.
Reference numeral 3 denotes a rice cooker body provided with a heater or the like, and a pot 5 is accommodated in the rice cooker body 3. Moreover, the rice cooker main body 3 is provided with a lid 7, and this lid 7 has a closing plate 8 which will be described later, and can be opened and closed in a closed state and an open state.

A boss 9 is formed on the lid 7, and a male screw 11 is formed on the boss 9. Further, a through hole 19 is formed in the lid 7, and the through hole 19 is continuous with the boss 9.
Reference numeral 15 denotes an electromagnetic valve as an on-off valve. The electromagnetic valve 15 has a female screw 17. The female screw 17 is screwed into the male screw 11 of the boss 9, and the electromagnetic valve 15 and the through hole 19 are connected. One end of a water supply hose 21 is connected to the solenoid valve 15, and the other end of the water supply hose 21 is connected to a faucet (not shown).
The electromagnetic valve 15 is connected to the control means 23, and the control means 23 performs control so that the electromagnetic valve 15 is closed after being opened for a predetermined time.
Further, a timer 25 is connected to the control means 23, and this timer 25 sets a time for starting the control means 23.
The control means 23 is also connected to a heater that heats the pot 5 when cooking rice or keeping warm. Therefore, the control means 23 serves as both an on-off valve control means for controlling the electromagnetic valve 15 and a heater control means for controlling the heater.

Reference numeral 27 denotes a nozzle tube, and a flange 29 is fixed to the upper end of the nozzle tube 27. The nozzle tube 27 is accommodated in the through hole 19 so as to be vertically movable with the flange 29 facing upward.
Reference numeral 31 denotes an attachment pipe. The attachment pipe 31 has a flange 33, and the upper portion is inserted into and fixed to the lower opening of the through hole 19 with the flange 33 as a boundary. A male screw 35 is formed at the lower portion with the flange 33 as a boundary.
The nozzle tube 27 accommodated in the through hole 19 is inserted into the through hole 19 so as to be movable up and down. A coil spring 37 is provided between the upper surface of the attachment tube 31 and the lower surface of the flange 29.

The closing plate 8 is formed in a shape that closes the opening of the shuttle 5, and a packing 41 is attached to the outer peripheral portion thereof. A central hole 43 is formed at the center of the closing plate 8, and a lower portion of the attachment tube 31 is fitted into the central hole 43. Then, a fixing nut 45 is screwed into the male screw 35 in the lower portion, and the closing plate 8 is attached to the attachment tube 31.
Further, the closing plate 8 is formed with a large-diameter hole 47, and further, a small-diameter hole 49 is formed at a position closer to the outer peripheral portion than the large-diameter hole 47.

A vertical hole 51 is formed in the lid 7, and the vertical hole 51 is provided at a position facing the large-diameter hole 47 of the closing plate 8. The vertical hole 51 is open on the lower side and closed on the upper side. Further, the lid 7 is formed with a horizontal hole 53, and this horizontal hole 53 opens in the middle of the vertical hole 51 and communicates with a fitting recess 55 formed on the side surface of the lid 7.
Further, a small-diameter vertical hole 57 is formed in the lid 7 at a position closer to the outer peripheral side than the vertical hole 51, and the vertical hole 57 is provided at a position facing the small-diameter hole 49 of the closing plate 8. The vertical hole 57 is open on the lower side and closed on the upper side. Further, the lid 7 is formed with a small-diameter horizontal hole 59, and this horizontal hole 59 opens in the middle of the vertical hole 57 and communicates with a small-diameter fitting recess 61 formed on the side surface of the lid 7.

  Reference numeral 63 denotes an attachment pipe. The attachment pipe 63 has a flange 65, and the upper portion is inserted into and fixed to the lower opening of the vertical hole 51 with the flange 65 as a boundary. A male screw 67 is formed at the lower portion with the flange 65 as a boundary, and the lower portion is fitted into the large-diameter hole 47 of the closing plate 8. Then, a fixing nut 69 is screwed onto the male screw 67 in the lower portion, and the closing plate 8 is attached to the attachment tube 63. A net 71 is attached to the lower portion of the attachment pipe 63, and the lower opening of the attachment pipe 63 is covered by the net 71.

  Reference numeral 73 denotes a spherical check valve, and the check valve 73 is provided in a state in which the upper opening of the attachment pipe 63 is closed. The attachment pipe 63 is formed with an air inflow hole 75 that connects the hook 5 and the lateral hole 53 through the attachment pipe 63 even when the upper opening is closed by the check valve 73.

Reference numeral 77 denotes an attachment pipe. The attachment pipe 77 has a flange 79, and the upper portion is inserted into and fixed to the lower opening of the vertical hole 57 with the flange 79 as a boundary. A male screw 81 is formed at the lower portion with the flange 79 as a boundary. The lower portion is fitted into the small-diameter hole 49 of the closing plate 8, and a fixing nut 83 is screwed onto the male screw 81. 8 is attached to the attachment tube 77.
Reference numeral 85 denotes a spherical check valve, and the check valve 85 is provided in a state in which the upper opening of the attachment pipe 77 is closed.

Reference numeral 87 denotes a protruding tube, and the upper end side of the protruding tube 87 is fixed in a state of being inserted into the mounting tube 77 and protrudes toward the bottom side of the hook 5.
As shown in an enlarged view in FIG. 3, a scale 89 is formed on the protruding tube 87, and the scale 89 indicates the amount of rice R as will be described later.
O-rings 91 and 93 are attached to the outer peripheral surface of the projecting tube 87, and a slide tube 90 is attached to the lower end portion side of the projecting tube 87 so as to be slidable in the vertical direction. The O-rings 91 and 93 are interposed between the outer peripheral surface of the protruding tube 87 and the inner peripheral surface of the slide tube 90, and the slide tube 90 can be fixed at a desired position. A plurality of air holes 95 are formed at the lower end of the slide tube 90.

The length of the slide tube 90 is set so that the air hole 95 comes to the height of the water level corresponding to the amount of rice in the combined scale 89 when the base end portion thereof is aligned with the scale 89.
The protruding pipe 87 and the slide pipe 90 constitute a drainage amount regulating pipe.

Reference numeral 97 denotes a drain hole base, and fitting convex portions 99 and 101 are formed on the drain hole base 97. Drain holes 103 and 105 are formed in the drain hole base 97. The drainage hole 103 opens to the front end surface of the fitting recess 55 and the back surface of the drainage hole base 97, and the drainage hole 105 opens to the front end surface of the fitting recess 61 and the backside of the drainage hole base 97. Drainage hoses 107 and 109 communicating with the drainage holes 103 and 105 are attached to the drainage hole base 97.
When the fitting convex portions 99 and 101 of the drain hole base 97 are fitted into the fitting concave portions 55 and 61 of the lid 7, the lateral hole 53 and the drain hole 103, and the lateral hole 59 and the drain hole 105 communicate with each other.
Since the drain hole base 97 is detachable from the lid 7, it can be removed and cleaned.

Next, the usage method of this rice cooker 1 is demonstrated.
First, for example, the rice R3 joint is put into the pot 5 without washing, the slide tube 90 is slid, and the base end portion of the slide tube 90 is aligned with the scale indicating “3” corresponding to the rice 3 joint of the scale 89. Since O-rings 91 and 93 are interposed between the outer peripheral surface of the protruding tube 87 and the inner peripheral surface of the slide tube 90, the slide tube 90 is fixed in a state where it does not move carelessly (see FIG. 3). ).
Then, the lid 7 is closed and the closing plate 8 closes the opening of the hook 5. The packing 41 attached to the closing plate 8 is brought into close contact with the edge of the hook 5 so that the inside of the hook 5 is sealed.
The timer 25 is operated to set the date and time for cooking rice, for example, the next morning at 6:00. In this state, the electromagnetic valve 15 is in a closed state.

  As shown in FIG. 2, the next morning, at 4:27 am, the electromagnetic valve 15 is operated to open in response to a command from the control means 23, and water enters the through hole 19 via the water supply hose 21 and the electromagnetic valve 15. Supplied. The pressure of the water supplied to the through hole 19 is applied to the flange 29, compressing the coil spring 37, and the nozzle tube 27 descends together with the flange 29. Then, water is ejected from the nozzle tube 27 as indicated by an arrow.

As shown in FIG. 4, the inside of the pot 5 is filled with water sprayed from the nozzle tube 27, and the rice R is stirred together with the water by the water flow to perform the rice washing. Since the nozzle tube 27 descends as described above, the water flow reaches the bottom of the pot 5 sufficiently, and the rice can be washed efficiently and completely.
Since the inside of the hook 5 is sealed as described above, it is possible to completely prevent water from leaking from the opening of the hook 5.

Further, the water in the hook 5 is discharged through the attachment pipe 63, the vertical hole 51, the horizontal hole 53, the drain hole 103, and the drain hose 107, and the water in the pot 5 is continuously replaced. During drainage, the check valve 73 is pushed up by water pressure and is in pressure contact with the inner wall at the upper end of the vertical hole 51. Therefore, the upper opening of the attachment pipe 63 is open.
Since the lower opening of the attachment pipe 63 is covered by the net 71, the rice R in the hook 5 can be prevented from being discharged together with water.
The water in the hook 5 is also discharged through the slide tube 90, the protruding tube 87, the vertical hole 57, the horizontal hole 59, the drain hole 105, and the drain hose 109. At this time, the check valve 85 is also opened similarly to the check valve 73.

When a predetermined time, e.g., 3 minutes elapses and 4:30 am after the solenoid valve 15 is opened, the solenoid valve 15 is closed by a command from the control means 23 and the supply of water into the hook 5 is stopped. Thus, the compression of the coil spring 37 is released, and the nozzle tube 27 rises.
When the supply of water into the hook 5 is stopped, the water pressure in the hook 5 is lost, so the check valve 73 is closed and the upper opening of the attachment pipe 63 is closed as shown in FIG.
Even after the check valve 73 is closed, the water in the hook 5 is discharged through the slide tube 90, the protruding tube 87, the vertical hole 57, the horizontal hole 59, the drain hole 105, and the drain hose 109 by the siphon action. Is done. In addition, when drainage is performed, since air flows into the hook 5 from the air inflow hole 75, the drainage does not stagnate.

As described above, drainage is performed to lower the water level, and when the water surface enters the air hole 95 of the slide tube 90 as shown in FIG. 6, air enters the slide tube 90 from the air hole 95. This stops drainage due to siphon action. When the drainage is stopped, the check valve 85 is closed to prevent the water remaining in the lateral hole 59 and the like from flowing back to the hook 5.
As described above, since the base end portion of the slide tube 90 is aligned with the scale indicating “3” corresponding to 3 rice, the water level (water amount) in the pot 5 is in a state corresponding to 3 rice. As described above, the backflow of water is blocked by the check valve 85, so that the water level can be prevented from changing.

Then, for example, when the electromagnetic valve 15 is closed for 40 minutes, that is, 5:10 am, the heater (not shown) is operated by the control means 23 for a predetermined time, and rice cooking is performed for 50 minutes, for example. The next morning, which is the date and time set by 25, can be cooked at 6 am. Since the check valve 73 is closed until the heater is actuated and the pressure in the pot 5 rises to some extent, pressure is applied to the rice R so that rice can be cooked deliciously.
Thus, according to the rice cooker 1, the time for immersing the rice R in water can always be appropriate, the rice can be prevented from becoming unpleasant, and there is no possibility that the rice R will rot during the immersion.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
In the above embodiment, the case where the rice is set to be cooked at 6:00 the next morning is shown. However, the weekly timer is provided, and the setting is made so that the rice is cooked not only on the next day but also at a predetermined time after several days, for example, the return date and time. Even in such a case, the time for immersing the rice in water can be made appropriate.

  The present invention can be used in the rice cooker manufacturing industry.

DESCRIPTION OF SYMBOLS 1 ... Rice cooker 3 ... Rice cooker main body 5 ... Pot 7 ... Lid 8 ... Closure plate 9 ... Boss 11 ... Male screw 15 ... Electromagnetic valve 17 ... Female screw 19 ... Through hole 21 ... Water supply hose 23 ... Control means 25 ... Timer 27 ... Nozzle pipe 29 ... Flange 31 ... Mounting pipe 33 ... Flange 35 ... Male screw 37 ... Coil spring 41 ... Packing 43 ... Center hole 45 ... Fixing nut 47 ... Large diameter hole 49 ... Small diameter hole 51 ... Vertical hole 53 ... Horizontal hole 55 ... Fit Joint recess 57 ... Vertical hole 59 ... Horizontal hole 61 ... Fitting recess 63 ... Mounting pipe 65 ... Flange 67 ... Male screw 69 ... Fixing nut 71 ... Net 73 ... Check valve 75 ... Air inflow hole 77 ... Mounting pipe 79 ... Flange 81 ... Male thread 83 ... Fixing nut 85 ... Check valve 90 ... Slide pipe 87 ... Projection pipe 89 ... Scale 91, 93 ... O-ring 95 ... Air hole 97 ... Drainage hole base 99, 101 ... Fitting projection 103, 105 ... Drain hole R ... Rice

Claims (4)

  A rice cooker body, a pot accommodated in the rice cooker body, a heater for heating the pot, and an opening / closing operation that is provided in the rice cooker body and closes and opens the upper surface opening of the pot A water supply pipe that penetrates the lid and enters the hook, an on-off valve connected to the water supply pipe, an on-off valve control means that closes the on-off valve after opening for a predetermined time, and the on-off switch A timer for setting a time for starting the valve control means, a drain pipe for discharging water in the kettle when water is fed into the kettle from the water feed pipe, and water supply from the water feed pipe is stopped. A rice cooker comprising: a drainage amount regulating pipe for discharging water in the kettle by a siphon action until a predetermined amount of water is reached, and heater control means for operating the heater for a predetermined time.   2. The rice cooker according to claim 1, wherein the drainage amount regulating pipe projects into the kettle toward the bottom of the kettle and is connected to a communicating pipe communicating with the outside of the kettle, and slides up and down with respect to the projecting pipe. A rice cooker comprising a slide tube that can be freely attached and fixed at a desired position.   The rice cooker according to claim 2, wherein the protruding tube is provided with a scale indicating a water level corresponding to the amount of rice to be cooked, and the water level can be set by matching the base end of the slide tube to the scale. rice cooker.   The rice cooker according to claim 2 or 3, wherein a check valve is provided in the middle of the protruding pipe or the drain pipe to prevent the drainage from flowing back into the pot.

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