JP3327816B2 - Commercial rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker for business use, and is used for serving a large amount of rice cooked in a sushi chain store, a restaurant or the like.

[0002]

2. Description of the Prior Art Commercial rice cookers are provided with a water supply means connected to a pressure water system such as a water supply through a valve or the like at the upper part of a rice washing tank provided with a stirring means so that the rice put into the rice washing tank is washed and put into a rice cooker. The apparatus is known in Japanese Patent Application Laid-Open Nos. 7-236831 and 2-279113, and is different in the category from home use. And put it into a gas / electricity rice cooker placed underneath to cook a large amount of rice.

[0003]

When cooking rice with a conventional commercial rice cooker, rice steam (hot air) is inevitably generated, which rises and is easily affected by heat. , Etc.), causing failure and malfunction. In addition, the box-shaped frame that houses the rice storage may cause the motor to malfunction or malfunction prematurely due to the heat energy generated by the weighing motor, the rice washing motor, and the like. This causes excessive drying of the rice and has become one of the factors of quality deterioration of rice.

[0004] Accordingly, the present invention provides an air (warm air) having a box-shaped frame.
By exhausting the heat outside the body, the durability of the motor etc. is improved and the rice in the rice storage is prevented from drying out, and at the same time, the hot air (steam) rising during the rice cooking due to the exhaust air is diffused. An object of the present invention is to provide a commercial rice cooker capable of suppressing thermal effects.

[0005]

According to the present invention, a rice washing tub 3 is provided below a box-shaped frame 13 in which a rice storage 6 and a control section 9 are provided.
The provided, e Bei cooker 5 beneath the detergent rice tank 3, the exhaust fan 46 to exhaust air provided air before Symbol box Katachimukurotai 13 to the outside, the box the wind exhaust duct 47 for exhaust air It is provided at the lower part of the frame 13 and crosses below the control unit 9 to diffuse the steam for cooking rice toward the control unit 9 to the exhaust duct 47 .
It is characterized by forming an exhaust hole 48 for exhausting air as described above, and by adopting such a configuration,
The motor and the like housed in the box-shaped frame 13 are hardly affected by heat, and can be reduced in failure and malfunction.
It prevents rice from deteriorating without excessively drying rice.

Further, an exhaust hole 4 formed in the exhaust duct 47 is provided.
The hot air (cooked rice steam) rising by the exhaust air from 8 is diffused and does not enter (reach) the control unit 9, and suppresses the thermal influence of the control unit 9. In the commercial rice cooker according to claim 2, the exhaust fan 46 is provided in the box-shaped frame 13.
The air exhaust duct 47 is provided so as to surround the upper portion of the rice washing tank 3. The rice exhaust tank 47 can protect (protect) the rice washing tank 3. By making the wind duct 47 a substantially heat-insulating layer, it is possible to reliably prevent moisture and hot air from entering the box-shaped frame 13.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a commercial rice cooker according to the present invention will be described with reference to the drawings. FIG. 1 is an overall side view of a commercial rice cooker 1 according to the present invention, and FIG. 2 is a front view of the same. In FIGS. 1 and 2, the commercial rice cooker 1 according to the present invention is tapered downward. A rice-discharging valve 4 that can be opened and closed is provided at the lower part of a rice-washing tank 3 having a funnel portion 2 and a rice cooker 5 that receives and throws rice and rice cooked through the rice discharging valve 4 and cooks rice. ing.

At the upper part of the rice washing tank 3, a rice storage 6 is installed, and a measuring drum 7 provided at the lower part of the rice storage 6 is rotationally driven to shoot rice according to a programmed rice cooking amount. The rice washing tank 3 can be fed (supplied) from the upper part of the rice rinsing tank 3 through an opening 8, and the front (front) of the rice storage 6 is provided with an openable and closable door 10 having a built-in control unit 9. An operation panel 11 is mounted, and a lid 12 is mounted on an upper part of the rice storage 6, and by opening the lid 12, rice can be supplied.

Referring to FIG. 7, there is illustrated a hinge means 10A which is an opening / closing fulcrum of the door 10. The hinge means 10A is located at a front corner of the door 10 when the door 10 is in a closed posture. Thus, when the door 10 is opened, it does not protrude from the side surface of the box-shaped frame 13, so that the rice washing apparatus 1 can be arranged as close to the wall of the kitchen room as possible.

A plurality of hinge means 10A are provided coaxially in the vertical direction of the door 10, and
The closing position of 0 can be maintained by a locking means, and a magnet or the like can be employed as the locking means.
OB is an elastic sealing material, which is used when the door 10 is closed.
Is to seal the entire circumference. The rice storage 6 is a cubic (box-shaped) container having a funnel section at the lower part, and is built in a box-shaped frame 13. The box-shaped frame 13 is supported by a support erected from a base 15 having wheels 14. The commercial rice washing apparatus 1 according to the present invention is portable and, of course, may be fixed in a kitchen room.

The rice washing tank 3 is cylindrical and has a box-shaped frame 1
An upper tank 3A attached and fixed to a partition plate (support base) 17 forming the bottom of the upper tank 3 and extending downward (exposed), and a plurality of stoppers having an upper edge joined to a lower edge of the upper tank 3A. And a lower tank 3B having a funnel portion 2 which is detachably attached via the lower tank 3B. Referring to FIGS. 5 and 6 together, the upper tank 3A has a top plate 3 having a flange 3A-1 removably attached to the partition plate 17 at its upper end.
A-2, and a cylindrical portion 3A-3 downward from the top plate 3A-2.
Is stretched and integrally formed of a hard resin, and the cylindrical portion 3A-3 has a stepped portion 3A- at a joint portion with the lower tank 3B.
The upper edge 3B-1 of the lower tank 3B is formed as an upper opening wall so as to surround the step 3A-4, and a sealing material (elastic annular tape) is desirably attached to the joint thereof. Is done.

The top plate 3A-2 of the upper tank 3A integrally has a bearing 3A-5 at the center thereof, and the bearing 3A-5 has a stirring rod 20 as stirring means via a ball bearing or the like. A cylindrical shaft 19 is supported. The stopper 18 includes an engaged piece 18A screwed to the lower outer surface of the upper tank 3A,
An operation lever 18D pivotally supported by a pin 18C on a substrate 18B screwed to the upper outer surface of the lower tank 3B, and an engagement arm 18F pivotally supported by a pin 18E halfway in the longitudinal direction of the operation lever 18D. The lever 18D is moved in the direction indicated by the arrow C in FIG.
The engagement arm 18F is disengaged from the engaged piece 18A by operating the pin 18C in the direction indicated by a fulcrum in the direction indicated by the arrow D. On the other hand, the engagement arm 18F is engaged with the engaged piece 18A. By pressing down the operation lever 18D in the direction opposite to the arrow C in the combined state, the upper and lower tanks 3A and 3B are joined by a so-called leverage action.

A cylindrical shaft 19 that rotates around a vertical axis by a motor or the like provided in the box-shaped frame 13 is supported on the center (axis) of the rice washing tank 3. Is a stirring rod 2
0 is fixed and constitutes a stirring means, so that the rice put into the rice washing tank 3 can be washed and polished.
The stirring rod 20 is composed of a plurality of rods extending in the horizontal direction and extending downward along the inner surface of the tank, and a water supply means 21 connected to a water supply or the like as a pressure water source in the rice washing tank 3. Is provided on the upper part thereof, so that water for washing rice, cooking water and the like can be supplied.

As shown in FIG. 5, the water supply means 21 has a shower portion 21A for spraying water downward substantially along the axis of the rice-washing tub 3, and a radially intersecting line with the axis of the rice-washing tub 3. A fountain portion 21B that fountains T substantially horizontally. The fountain portion 21B cleans scales and the like that adhere to the inner surface of the upper tank 3A. Specifically, a cylindrical water supply box 21E which is inserted and supported by the top plate 3A-2 and is connected to a water supply pipe 21D via a connection elbow 21C, and an opening edge 21E-1 of the water supply box 21E. Collision plate 21 having a small clearance X and closing the water supply box 21E
F is detachably attached with a stopper 21G.
A large number of small holes 21F-1 formed in F constitute the shower part 21A, and the gap X constitutes the fountain part 21B. The water supply means 21 constructed in this way is placed above the rice washing tank 3 at the center of the tank. On the other hand, they are distributed at the radiation positions.

The water supply pipe 21D is connected to a water tap or the like, and a flow valve of an electromagnetic valve type, an on / off valve, and the like are provided in the middle of the water supply pipe 21D. Upper and lower tank 3
A and 3B are joined and separated via a plurality of stoppers 18 because the lower tank 3B is removed together with the rice discharging valve 4 and the tank 3B is removed.
This is for cleaning the entire inner surface of the container and for cleaning the inner surfaces of the stirring rod 20, the water supply means 21 and the upper tank 3A as the stirring means. By removing the lower tank 3B as a whole, the stirring rod 20 can be made so-called sticky. This facilitates the entire cleaning including the bearing portions 3A-5 and the like.

When cleaning the stirring rod 20 and the like,
In order to prevent the 0 from being accidentally rotated, an interlock means 49 for a drive system (motor or the like) of the stirring means is provided. In FIG. 6, the interlock means 4
Reference numeral 9 denotes a normally-closed micro switch (sensor) 50 provided inside the box-shaped frame 13, a detection operation rod 52 for turning on and off the switch 50 and pushed downward by a coil spring 51 or the like. Bracket 53 provided in tank 3B
The push rod 54 is screwed to the upper tank 3B, and the guide 55 is provided in the upper tank 3B for both positioning and use.

That is, the stopper 18 is loosened to release the lower tank 3B.
Is taken out from the upper tank 3A, the detection operating rod 52 is lowered by the coil spring 51, and the sensor 50 is opened to stop the power supply to the drive motor and the like, thereby interlocking the unexpected rotation of the stirring rod 20. When the predetermined cleaning is completed and re-assembly is performed, the push rod 54 is inserted through the guide portion 55 to thereby lower the upper tank 3A with respect to the lower tank 3B.
Is pressed and pushed upward, the detection operation rod 52 is pushed up against the coil spring 51, and the sensor 50 is turned on. Here, the power supply of the drive motor is turned on / off. Thus, the stirring rod 20 can be driven.

As shown in FIG. 5, the stirring rod 20 is
It is a bar composed of a horizontal component 20A and a downward component 20B, and is located inside and outside at the radial position of the rice washing rod 3,
Since resistance acts on the outermost stirring rod 20 during stirring, the cross section of the rod is gradually reduced from the outer diameter to the inner diameter (from the inner diameter to the outer diameter is gradually increased). The rice discharging valve 4 has a conical shape and is detachably attached to the lower end of the valve rod 22 with a one-touch fitting or the like. The valve rod 22 is inserted into the cylindrical shaft 19 and provided in the box-shaped frame 13. It can move up and down via a cam, a crank, and the like, and can be opened and closed freely by this up and down operation.

At the lower end of the rice washing tank 3, a drain box 23 is detachably mounted via a plurality of one-touch fittings (patch locks) 24 shown in FIG. 3, and the drain box 23 is formed in a cylindrical shape. And a large number of holes 24A as shown in FIG.
And a drain box 2 having a
An annular seal packing 25 is detachably attached to a rice discharging port 23A formed at the bottom of the base 3 via a packing retainer 26 screwed, and the rice discharging valve 4 substantially removes the seal packing 25. It is supposed to open and close.

A branch pipe 26 is extended and connected to the drain box 23 in the horizontal direction (left direction in FIG. 2), and a lower end of a vertical pipe 27 connected to an overflow port 27A formed in the upper part of the rice washing tank 3 is connected. Is connected to a drain box 28 having a drain valve openable and closable at the connection with the drain box 28. The drain box 28 has drain means 29 such as a drain hose and a drain trough.
Is connected.

On the upper part of the drain box 23, a dew tray 30 is mounted. As shown in FIG.
Has an upper opening for receiving the dew A flowing down the outer surface of the upper surface. The dew tray 30 is integrally formed with an annular inner wall 30A that is elastically deformed and adheres to the outer surface of the funnel portion 2 and an annular weir 30B that is coupled to a radially outer position of the annular inner wall 30A. The annular groove 30C is formed.

The dew tray 30 is formed of an elastic material such as urethane rubber, is mounted from below the funnel 2 in a state of being expanded in a radially outward direction, and has an annular inner wall 3 in a virtual state in FIG.
0A is elastically deformed so as not to leak water by being in close contact with the outer surface of the funnel portion 2, and the annular inner wall 30A has a wedge-shaped cross section to flow down the outer surface of the funnel portion 2 (see arrow B). The dew A is smoothly stored in the annular groove 30C.

As shown in FIG. 4, a discharge port 30D is formed in the dew tray 30, and a discharge means 31 such as a hose or a tub is connected to the discharge port 30D, and water is stored in an annular groove 30C. Water can be drained out of the apparatus as shown in FIG. 1 and 2, the rice cooker 5 is provided detachably on a base 32 which can be moved in and out in a horizontal direction on a base 15 via slide rails, rollers and the like as shown in FIGS. It is an operation handle for getting in and out.

In FIG. 1 and FIG. 2, the rice cooker 5 is a stove section 33 for gas, electricity, etc., which is mounted on a gantry 32.
And an outer hook 34 mounted on the stove 33,
An inner pot 35 which is removably fitted into the outer pot 34.
And a lid 36 detachably mounted on the inner pot 35.
The lid 36 is surrounded by an annular protector 37 connected to the upper part of the inner pot 35.

In the illustrated embodiment, a rice receiving port is opened at the center of the lid 36 as, for example, a circular hole, and the rice receiving port can be opened and closed by a shutter 38. The lid 36 can be entirely lifted vertically by the lifting lever 39 via the rollers 40 and the rails 41 (until the lid 36 comes to a position above the protector 37). Engaging part 4
3 can be held by engaging it, and the engagement can be released by a lock release lever 44.

The lid 36 can be held on the elevation lever 39 side via a lock member 45, and the lock member 45 can be freely disengaged from the lid 36 by a lock release lever 44. Accordingly, the illustrated rice cooker 5 moves the rice and the rice cooked water into the inner pot 35 by opening and closing the rice discharge valve 4 by opening and closing the rice receiving port by vertically opening and closing the shutter 38 immediately below the rice discharge port 23A. Rice can be cooked in a state where the shutter 38 can be received and the shutter 38 is closed.

Further, the lifting operation of the lifting lever 39 causes the lid 3 to move.
The inner pot 35 and the outer pot 34 can be pulled out in the horizontal direction together with the stove unit 33 by the in / out operation of the gantry 32 in a state where the lid 6 is lifted and the lid 36 is left. The rice cooker 5 can be freely moved in and out by moving the gantry 32 in and out with the lid 36 placed on 35.

The dew tray 30 can be fixed to the outer surface of the funnel 3 as an overhang, and in this case, it can be made of resin or metal. In addition, in FIGS. 1 and 2, an exhaust fan 46 is built in the inner part of the box-shaped frame 13, and the warm air in the box-shaped frame 13 is discharged to the outside of the frame 13 so as to be used for the measuring drum 7. By discharging heat energy (warm air) generated from the motor and the motor for driving the stirring rod 20 to the outside of the frame 13, the durability of the motor and the like is improved, and the rice stored in the rice storage 6 is stored. To prevent excessive drying.

The exhaust duct 47 of the exhaust fan 46 is fixed to the lower surface of the support base 17 and is located in the upper tank 3 in the rice washing tank 3.
A is circumscribed around A, and the air is exhausted forward from the exhaust hole 48 on the front side (the horizontal direction is good, but a slightly downward direction is desirable), whereby the control is easily affected by heat. The hot air from the rice cooker 5 is diffused into the section 9, where the exhaust duct 47 substantially constitutes a heat insulating layer.

Next, an outline of the operation of the rice cooker 1 described above will be described. By operating a switch on the control operation panel 11 and rotating the measuring drum 7, a predetermined amount of programmed rice is put into the rice washing tank 3. And start the rice washing process. This rice washing step is performed by supplying a required amount of water from the water supply means 21 with the rice discharge valve 4 and the drain valve of the drain box 28 closed, and rotating the stirring rod 20 around the vertical axis. By turning on / off the 28 drain valves, a plurality of rice washing operations are performed.

In supplying the rice washing or the rice cooked water after the rice washing, the water supply means 21 includes a shower section 21A and a fountain section 21B.
Therefore, the pressure of the shower section 21A is not so high, so that the outflow of rice from the overflow port 27A is reduced, and the scale of the inner surface of the upper tank 3A is generated by the fountain pressure from the fountain section 21B. In addition, the remaining rice will surely flow downward.

By this washing of rice, the bran is discharged out of the machine through the drainage box 28 and the like from the hole 24A of the funnel cylinder 24 together with the water. Is prevented. When the rice washing process is completed, the rice polishing process and the colander raising process are started under the programmed conditions. In the rice polishing step, after washing the rice, the rice which has been drained and moistened is rotated by rotating the stirring rod 20, and then the process is shifted to a colander raising step.

The raising of the colander can be carried out in the rice cooker 5. When the predetermined process is completed, the rice discharging valve 4 is lowered, and after passing through the rice discharging process of putting rice and rice cooking water into the inner pot 35 with the shutter 38 open, the shutter 38 is closed and the rice cooking process is closed. Transition as programmed in. The rice cooking steam rises by this rice cooking process, and the rice washing tank 3
When the dew A flows down the outer surface of the funnel 2 as shown by the arrow B in FIG. 4, the dew A collects and collects in the dew tray 30 at the upper part of the drain box 23, and cools. 5 is prevented, and when a drainage means 31 is provided, it is discharged out of the apparatus and does not leak from the dew tray 30.

In addition, even if the steam (hot air) rises and attempts to enter the control unit 9, the exhaust air from the exhaust fan 46 is blown out through the duct 47 and the exhaust hole 48, so that it is diffused and thermally weak. The control unit 9 is protected and eliminates the causes of failure and error. When the rice cooking process ends according to the program,
Generally, after the steaming process, the rice cooker 5 is moved forward by the pulling-out operation of the gantry 32, the rice is transported to the cooking section together with the inner pot 35, and a new empty inner pot is inserted into the outer pot 34. Again, the rice is set directly below the rice discharge valve 5 through the pushing operation of the gantry 32 for preparing rice cooking.

The exhaust fan 46 may be provided at the back of the exhaust duct 47 so as to suck and discharge the warm air in the box-shaped frame 13. The control unit 9 may be provided inside the box-shaped frame 13 on the front side (front side).

[0036]

As described above in detail, according to the present invention, the air (warm air) in the box-shaped body can be discharged to the outside to improve the durability of the motor and the like, and prevent rice from drying to prevent rice from drying. In addition to improving the quality of the rice cooked rice, the cooked rice cooked air can be diffused by the exhaust air to suppress the thermal influence of the control unit.

[Brief description of the drawings]

FIG. 1 is a side view of a commercial rice cooker according to the present invention.

FIG. 2 is a front view of the commercial rice cooker according to the present invention.

FIG. 3 is a side view showing a main part of the present invention.

FIG. 4 is a sectional view showing a main part of the present invention.

FIG. 5 is a sectional view of a water supply means.

FIG. 6 is a side view showing an interlock means.

FIG. 7 is a plan view showing an opening / closing section of a door.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Commercial rice washing apparatus 3 Rice washing tank 5 Rice cooker 6 Rice storage 13 Box-shaped frame 46 Exhaust fan 47 Exhaust duct 48 Exhaust hole

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Sadao Fukushima 2-2-27 Mizuhashi, Higashiosaka-shi, Osaka Daiwa Seiko Co., Ltd. (72) Kiyoto Kasamatsu 2 Mizuhashi, Higashiosaka-shi, Osaka No. 2-27, Daiwa Seiko Co., Ltd. (56) References JP-A-5-192243 (JP, A) JP-A-8-187172 (JP, A) (58) Fields investigated (Int. Cl. ⁷⁾ A47J 27/14-27/18 A47J 27/00

Claims (3)

(57) [Claims] 1. A rice washing tank (3) is provided at a lower portion of a box-shaped body (13) containing a rice storage (6) and a control unit (9),
Detergent US tank (3) of the cooker down (5) Bei give a exhaust fan to exhaust air the air before Symbol box Katachimukurotai (13) to the outside (4
6), and an exhaust duct (47) for the exhaust air is provided at a lower portion of the box-shaped frame (13).
The to spread the cooking vapors toward the control unit (9)
Exhaust holes (4 ) that exhaust air across the lower part of the control unit (9)
8) A commercial rice cooker characterized by forming item 8). 2. An exhaust fan (46) comprising a box-shaped frame (13).
The exhaust duct (47) is provided so as to surround the upper part of the rice washing tank (3).
The commercial rice cooker as described. 3. The commercial rice cooker according to claim 1, wherein the exhaust duct (47) is a heat insulating layer.