JP2015003305A - Rice washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice washing machine which can suppress adhered rice residue due to bamboo basket lifting immersion in a rice washing tank.SOLUTION: A rice washing machine has a rice washing tank capable of performing a series of operation, which are a rice washing step S2, a bamboo basket lifting immersion step S3, a water adding and reducing step S5 and a putting step S6, and performs preparation along regulation, and is configured so that it can be put into a rice cooker from the rice washing tank for cooking the rice to which water was added. The rice washing tank has selection means for selecting propriety of the preparation by the series of operation excluding the bamboo basket lifting immersion step, thereby suppressing adhered rice residue due to the bamboo basket lifting immersion.

Description

  The present invention relates to a rice washing machine equipped with a rice washing tank for washing rice.

  As described in Patent Document 1, in order to adjust the water absorption amount of rice grains to be cooked and to cope with the cooking of a wide variety of rice, it is referred to as underwater soaking and the soaked rice soaking. There is known a rice-washing rice cooker that can select a method of intermittently spraying water in a drained state. Moreover, as described in Patent Document 2, it is mainly possible to select a method for defining the amount of water injected with a flow rate sensor and a method for defining a drainage time from the tank full water amount from the viewpoint of accuracy of adding and subtracting the amount of cooked rice water. A rice-washing rice cooker is known.

Japanese Patent No. 3760937 JP 2012-139255 A

  However, the problem of the soaking is that when the amount of water absorbed by the rice cereal is large, rice grains adhere to and remain on the inner wall of the rice washing tank when dropping the water in the rice washing tank into the rice cooker.

  The objective of this invention is providing the rice washing machine which can suppress the adhesion rice residue by the raising soaking about a rice washing tank.

  The invention according to claim 1 includes a rice washing step (P2) for washing rice, a water soaking step (P3) for watering the washed rice, a water addition / reduction step (P5) for supplying water depending on the amount of rice, In the rice washing machine (S) that can be operated in the order of water addition / reduction and the dropping step (P6) for discharging rice, the water addition / reduction step (P5) without going through the raising dipping step (P3) after the rice washing step (P2). It is characterized by comprising selection means for selecting to shift to (1).

  The invention according to claim 2 is configured such that the treatment time of the non-raising dipping step (P3) can be set in claim 1, and when the treatment time is within a specified time, the water addition / reduction step (P5) Water supply / reduction water is supplied by the first water addition / reduction system that controls water supply based on the flow rate sensor (25), and when the treatment time is longer than the specified time, water of a specified amount or more is supplied into the rice washing tank (3). Then, water is added / subtracted by a second water addition / subtraction system that controls drainage for a specified time.

  The invention according to claim 3 is the invention according to claim 1, wherein, in the case where the raising dipping process (P3) is excluded by the selection means, a specified time from the water adding / decreasing process (P5) to the dropping process (P6). It is characterized by maintaining.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the rice washing tank (3) is provided with a stirring rod (17) for agitating and operating the contents, and the soaking step (P3) ) Is provided with a stirring step for operating the stirring rod (17).

  According to the invention according to claim 1, the rice washer can perform a series of steps starting from rice washing in order, and the time when the outside air temperature is high and the water absorption of rice is good and hardly requires the soaking is high. Since the selection means excludes the removal soaking process (P3), the rice washing process (P2) shifts to the dropping process (P6) through the water addition process (P5). ) Can reduce the amount of residual rice.

  According to the second aspect of the present invention, in addition to the effect of the first aspect, the control mode of the water control amount in the water control step (P5) is switched according to the processing time by the setting of the special dipping step (P3). That is, when the immersion treatment time is relatively short, the first water adding / decreasing method using the flow sensor (25) is applied to enable water saving, and when the immersion treatment time is relatively long, the second water by draining is used. An addition / subtraction method can be applied to prevent sticking rice residue.

  According to the invention of claim 3, in addition to the effect of claim 1, in the case where the soaking up dipping process (P3) is excluded, after the rice washing process (P2), the process proceeds to the water adding / decreasing process (P5). By maintaining the submerged state for a specified time in the submerged state, it is possible to prevent the adhered rice residue.

  According to the invention of claim 4, in addition to the effect of any one of claims 1 to 3, the stirrer operates during the lifting dipping process (P3) that is not performed by the stirring process. it can.

Front view (a) and side view (b) of rice washing machine Longitudinal side view of rice washing machine Perspective view around the stir bar Water supply perspective view Block diagram of the control system of this embodiment Flow chart of rice washing rice cooking process The flow rate adjustment process of the present embodiment is its flowchart. Guidance screen for water immersion (a), operation screen for selection (b) and process chart (c) Guidance screen (a), operation screen (b) and process chart (c) accompanying selection Rinsing timing chart Guide screen for rinsing immersion (a) and operation screen for selection (b) Configuration diagram around the weighing unit

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
FIG. 1: is the whole rice cooker front view (a) and whole side view (b) which have a rice washing machine. This rice washing rice cooker 1 is configured by supporting a rice washing machine S including a rice storage tank 2 and a rice washing tank 3 at an upper portion, and a rice cooking device 5 disposed below the rice washing machine S. The rice washing machine is configured by providing a rice storage tank 2 above a support machine frame, and integrally connecting a rice washing tank 3 with a water supply / drainage portion at the bottom of the rice storage tank 2. The rice cooking device 5 is arranged below the rice washing tank 3 with an interval, and includes a rice cooking pot 6, a pot heating burner 7, a drawer-type gantry 10, and the like. The rice-washing rice cooker 1 performs a series of processes from the weighing process using the rice storage tank 2 to the rice-washing process using the rice-washing tank 3, through the washing, dipping, watering, and dropping processes in accordance with the rice-cooking settings.

  The configuration of the rice storage tank 2 will be described in detail with reference to FIG. The rice storage tank 2 has a rice inlet 18 opened on its upper surface, the rice inlet 18 is opened and closed by a charging lid 19, and an operation panel 11 is provided on the front of the exterior. The lower half of the rice storage tank 2 is formed in a hopper shape, and a measuring instrument 12 is attached to the lower end of the hopper. The meter 12 is composed of a metering feed valve driven by a motor 12a, and rotates the meter 12 filled with rice that has flowed from the storage tank 2 by a certain amount by the number of revolutions required for the planned amount of rice cooking. An amount of rice is supplied from the rice storage tank 2 to the rice washing tank 3.

  As shown in the vertical side view of the rice washing tank section of FIG. 2, the rice washing tank 3 includes a funnel-shaped receiving section 13 for receiving rice supplied from the measuring instrument 12 on the ceiling section, and a cylindrical body in the middle section. It is the structure which has the part 3b and the hopper-like part 3c in the lower part. A jacket portion 31 is connected to the lower part of the hopper-like portion 3c of the rice washing tank 3, and a filter 15 having an opening that does not leak rice grains is provided at the boundary between the hopper-like portion 3c and the jacket portion 31.

  A rotary shaft 16 having a vertical hollow shaft is provided at the center of the rice washing tank 3, and a rice draining shaft 16a is disposed through the hollow portion. A plurality of stirring rods 17, which are stirring bodies, are attached to the rotating shaft 16, and at least one of them employs a shape along the inner wall of the rice washing tank 3. The rotary shaft 16 is rotated by a rice washing motor 20 attached to the support machine frame via a transmission system such as a bevel gear 21 so that the forward and reverse directions and the rotation speed can be controlled.

  As shown in the perspective view of FIG. 3, the stirring rod 17 is bent and formed so as to lift the rice being washed in a counterclockwise operation, thereby enabling reduction of the washing time and the amount of water used. By controlling the operation to rotate clockwise so as to press down the wet rice, the remaining rice adhering to the side wall of the rice washing tank 3 can be dropped as much as possible.

  The rice draining shaft 16a is loosely fitted in the outer rotary shaft 16 so as to be freely slidable up and down. A removable rice draining valve 22 is provided at the lower end of the shaft, and the upper end of the shaft is a motor 23 for driving the rice draining valve. The opening / closing control of the rice draining valve 22 is performed by the cam 24 driven by When the rice removal valve 22 is opened, the rice in the rice washing tank 3 falls into the lower rice cooker 5.

(Water supply system)
The water supply system of the rice washing tank 3 will be described. Water and air are supplied to the rice washing tank 3 by bringing the lower water supply pipe 27 and the air supply pipe 27a close to the lower jacket portion 31, and as shown in the perspective view of the water supply in FIG. A water distribution pipe 26 is disposed on the upper side of the water supply pipe, and a lower water supply pipe 27 is provided by descending from the water distribution pipe 26, and an upper water supply pipe 29 is branched from the water distribution pipe 26 to supply water from a plurality of shower nozzles 29a and 29b. The water distribution pipe 26 is provided with a flow rate sensor 25 for measuring the flow rate, and an electromagnetic valve 28 that operates in accordance with the measurement value of the flow rate sensor 25 is provided in the lower water supply pipe 27, and a similar electromagnetic valve 35 is provided in the upper water supply pipe 29. .

  The lower water supply pipe 27 configured as described above supplies water to the jacket portion 31 at the lower part of the rice washing tank 3 during the rice washing, and the lower water supply pipe 27 descends from the water distribution pipe 26 at the upper height position of the rice washing tank 3 to the lower part of the rice washing tank 3. Since it communicates, the total amount of water in the lower water supply pipe 27 is drained without remaining. Accordingly, when supplying water to the rice that has been subjected to the rice washing treatment, the entire amount of water supplied by the electromagnetic valve 28 that is metered and controlled based on the flow rate sensor 25 descends the lower water supply pipe 27 and the lower part of the rice washing tank 3. Therefore, the required cooking conditions can be ensured by adjusting the amount of water that can be controlled with high accuracy.

  The air supply pipe 27a having the above-described structure has an air inlet provided in the lower jacket portion 31, and supplies air constantly or intermittently during the later-described rice washing process, and during the rice / water dropping process after the later-described water adding and reducing process. By supplying air temporarily for a short time, discharge of rice and water in the rice washing tank 3 is promoted.

  The upper water supply pipe 29 having the above-described configuration is provided with an electromagnetic valve 35 that branches from the water distribution pipe 26 at the upper height position of the rice washing tank 3 and operates according to the measurement value of the flow sensor 25. It becomes possible to manage the amount of water at the time of the immersion treatment in which water is intermittently sprayed.

  The drainage part of the rice washing tank 3 will be described. A drainage box 39 is provided on the lower side of the rice washing tank 3, and the drainage box 39 having a drainage port 40 is connected to an overflow pipe 41 opened at the upper side surface of the rice washing tank 3 by a connecting pipe 36. The portion is connected to a jacket drain pipe 42 communicating with the jacket portion 31. Drainage from the jacket drain pipe 42 is performed by opening and closing a drain valve 44 (shown integrally with the water level valve 54 in FIG. 2 for convenience), and the water level in the rice washing tank 3 is adjusted by the water level valve 54.

  Although the drainage box 39 is always closed by the drainage valve 44 and the water level valve 54, when draining the water in the rice washing tank 3, the jacket water distribution pipe 42, the drainage valve 44, and the Drained through the water level valve 54, the drain box 39 and the drain port 40.

  The drain valve 44 and the water level valve 54 are opened and closed by control wires 45 and 55 provided in connection with respective solenoids (not shown) fixed to the ceiling of the rice washing tank 3. Moreover, the float sensor 32 with an electrical contact which detects the amount of water in the rice washing tank 3 is provided in the upper part in the rice washing tank 3.

  FIG. 5 shows a block diagram of the control system. The control system of the rice-washing rice cooker according to the present embodiment inputs the flow sensor 25 and the float sensor 32 signal to the control unit C in addition to the various operation switches of the operation panel 11, and measures the amount of cooked rice on the output side. The motor 12 a of the meter 12, the drive motor 23 of the rice discharge valve 22 that drops rice and water, the rice washing motor 20 that drives the stirring rod 17, the electromagnetic valve 35 and the electromagnetic valve 28 that communicate with the rice washing tank 3, and the rice washing tank 3 The solenoid of the drain valve 44 and the water level valve 54, the burner 7 of the rice cooker 5, the display screen of the operation panel 11 for displaying the setting contents and the operation status, etc. are connected, and the control unit C controls these devices according to the input signal. Configure as possible.

  The basic process of washing rice rice in this example is shown in the flowchart of FIG. In the first step of the weighing process (hereinafter abbreviated as “S1”), a set amount of rice is supplied from the rice storage tank 2 to the rice washing tank 3, and in the rice washing tank 3 receiving this, the rice washing process (S2 ), Rice is prepared by each processing step of dipping process (S3), draining process (S4), water adding / decreasing process (S5), rice is supplied to rice cooker 5 by rice / water dropping process (S6), and then cooked In the apparatus 5, the rice cooking process (S7) by the burner 7 is performed.

  In the rice washing step (S2), while supplying the washing water from the lower water supply pipe 27, air is supplied from the air feed pipe 27a to the washing water, and the stirring rod 17 is always rotated to wash the rice. By generating bubbles in the rice washing tank, the impact at the time of collision between the rice and the stirring rod 17 can be reduced, and the rice can be prevented from cracking.

In the dipping step (S3), the stirring rod 17 is stopped and the washing water is drained, and then the dipping process is performed. That is, water is supplied from the upper water supply pipe 29 every set time in a drained state and sprayed like a shower. By controlling the flow rate sensor 25 to apply a predetermined amount (for example, 160 cc) of water, the amount of water spray can be stabilized compared to the case of water supply control for a predetermined time.
During the dipping step (P3), the stirring rod 17 may be operated every set time (for example, every 10 minutes) for a set time (for example, 10 seconds). Thereby, it is possible to prevent rice from adhering to the inner wall of the rice washing tank 3.

  The immersion time in the immersion step (S3) varies depending on the store using the rice-washing rice cooker. For example, in a store that offers set meals, take about 2 hours of soaking time to provide white rice as it is, and cook it plumply, whereas in stores that provide rice balls, sushi, and rice bowls, the soaking time is shortened and the grains are reduced. Make the cooking method firm and resilient.

  In the draining step (S4), the water is drained and the stirring rod 17 is rotated for a short time.

  In the water addition / reduction step (S5), the stirring rod 17 is stopped, and the required amount of water for water addition / reduction is supplied from the lower water supply pipe 27 and stored. The amount of stored water is controlled by detecting the amount of water supplied to the lower water supply pipe 27 with the flow rate sensor 25 and controlling the flow rate sensor 25 to open and close the electromagnetic valve 28, and after the rice washing tank 3 is filled with water. There is a hydrostatic control system that drains water for a predetermined time. Whether the rice washing tank 3 is full of water is determined by a signal from the float sensor 32.

  In the rice / water dropping step (S6), the drain valve 22 is opened, and the water subjected to water addition / reduction is dropped from the rice washing tank 3 to the rice cooker 5. At this time, while rotating the stirring rod 17 for a short time, air is ejected from the air supply pipe 27a for a short time and discharged so that the rice in the rice washing tank 3 does not remain.

(Water adjustment method)
As for the water adding / decreasing step, as the soaking time is longer, the rice sucks more water and easily adheres to the rice washing tank 3. In order to avoid this, a flow rate sensor type in which a predetermined amount is poured by the flow rate sensor 25. It is possible to switch between water leveling and hydrostatic water leveling that drains the specified amount from the full water level of the rice washing tank 3, and only when the soaking time is long, the water level can be increased and decreased at the time of dropping. Adhesive rice residue can be prevented.

  Specifically, as shown in the flowchart of FIG. 7, the water addition / decreasing method is switched according to the set time of the sizzling soaking (S 13). Specifically, when the set time for immersion is short (for example, 60 minutes or less), water is controlled (S14a, S15a) with a predetermined amount of water by the flow rate sensor control method, and the set time for immersion is long. (For example, 61 minutes or more), after performing a water washing operation (S14b, S15b) by a water washing operation for several seconds at a full water level and draining a specified amount of water after stabilization of the water surface by a still water control system (S14b, S15b) The process proceeds to S16).

  As described above, the control of the water amount in the water adding / decreasing step P5 is switched according to the processing time by the setting of the soaking up immersion process P3, and when the immersion processing time is relatively short, the first water adjustment by the flow sensor 25 is performed. This method is applied to reduce the residue of adhering rice and save water, and when the treatment time for immersion is relatively long, the second water addition / decreasing method by draining can be applied to prevent the adhering rice residue. .

(Water immersion)
Also, instead of immersing from washed rice to hydrating, removing the immersive water from the washed rice and adding hydrated soaking that maintains the soaked state as it is to prevent sticking rice residue at the time of dropping Can do. In detail, as shown in FIG. 8, as an item of an expansion mode for setting an extended function of the rice washing rice control, an item of “water immersion” is provided in the guidance screen (a), and an operation associated with the selection of the item is performed. The screen (b) guides selection of “valid” or “invalid” for water immersion.

  When “valid” is selected by operating the + and − buttons, as shown in the process chart (c), the process enters the water adding / decreasing process P5 following the end of the rice washing in the rinsing process P2a, and a predetermined time is left in the rice washing tank 3 as it is. By dropping into the rice cooking pot 6 in the dropping step P6 through the maintained water immersion P3A, it is possible to prevent the adhered rice residue from dropping. When “invalid” is selected, normal operation is performed from washing the rice to immersing through immersion.

  Thus, when the dipping process following the rice washing is excluded by the selection means, after the rice washing process P2, the process proceeds to the water adding / subtracting process P5, and the submerged state for the specified time is maintained in the state submerged in the water added / subtracted water. By doing so, it becomes possible to prevent the adhesion of the remaining rice while compensating for the lack of water absorption of the rice due to the exclusion of the soaking.

(Salted soaking)
Further, by removing the soaking soak and dropping after washing the rice after washing, adhering rice residue in the washing rice tank 3 can be prevented. Specifically, as shown in FIG. 9, as an item of the expanded mode of rice washing rice control, an item of “salting soaking” is provided in the guidance screen (a), and the operation screen (b) according to the selection of the item is used. Guidance on selection of “Yes” or “No” for sizzling soaking.

  When “None” is selected by operating the + and − buttons, as shown in the process chart (c), the process goes from the normal process leading to the soaking process P3 and the water adding / decreasing process P5 following the end of the washing rice in the rinsing process P2a. By removing the soaking step P3 and dropping the rice cooker 6 into the rice cooker 6 by the dropping step P6 under the condition of the preparation of the rice cooker 6, it is possible to prevent the adhered rice residue from being dropped during the dropping. it can. When “Yes” is selected, normal operation is performed from the washed rice through the soaking to the water level.

  The rice washing tank 3 usually cooks rice through a series of pre-treatments starting from washing the rice, and it is necessary to immerse the rice in the summer when the outside air temperature is very good for water absorption of rice. When there is not, the adhesion | attachment rice residue in the rice-washing tank 3 accompanying the non-raising dipping process P3 can be suppressed by selecting exclusion of the non-raising dipping process P3 by a selection means. Furthermore, by making it possible to set the soaking time longer, water can be sufficiently absorbed even in winter when the water absorption of rice is poor.

(Just rinsed)
Further, as shown in the timing chart of FIG. 10, the water of the overflow process P2b at the end of the washing process P2a at the end of the washing process P2b is transferred to the dipping process P3 while being stored in the washing tank 3, and about 2 minutes before the water adding / decreasing process P5. From the rinse soaking that starts the stirring process P4a of the rice washing tank 3 and drops after performing the water draining process P4b, the adhered rice residue in the rice washing tank 3 can be prevented. As shown in FIG. 11, the above-mentioned handling is provided with an item of “rinse soak” on the extended setting guide screen (a), and “valid” is activated by operating the + − button on the operation screen (b) accompanying the selection of the item. "Rinse rinse" and "Invalid" standard setting can be selected.

  Next, the configuration of the measuring instrument 12 will be described. As shown in FIG. 12, an internal configuration diagram of the measuring instrument 12 is a measuring drum that forms a blowing port 61 on the side surface of the drum-type measuring instrument 12, sends air from a blower 62 provided on the outer side thereof, and faces the rice washing tank 3. Apply wind to the bottom of the. The blower 62 blows air only during the operation of the rice-washing rice cooker, or periodically blows air for 1 minute at a constant time interval when the power of the rice-washing rice cooker is “on”. By operating the blower 62 as described above, it is possible to prevent the rice grains wet with water from entering the measuring drum and to suppress the generation of mold by drying in the rice washing tank 3.

  For the water addition / reduction process, the common flow rate sensor 25 provided on the lower side of the lower water supply path and the upper water supply path is dropped into the rice cooker 6 with a predetermined amount less than the amount corresponding to the amount of cooked rice in the lower water supply path, Immediately after that, the shortage is supplied from the upper water supply path until the valve is closed. In this way, the amount of water can be divided into lower water supply and upper water supply, and all the remaining rice in the washing rice tank 3 can be dropped into the rice cooker 6 by the upper water supply after the water supply / reduction with stable lower water supply.

  The rice washing agitation motor 20 is constituted by a speed control motor, and at the time of rice washing, the rotation of the stirring rod 17 is rotated at a low speed 1 and the rotation of the stirring rod 17 is performed at a high speed 2 only before dropping into the rice cooker 6. By switching to, and dropping into the rice cooker 6 after rotation, it becomes possible to prevent the adhered rice from remaining in the rice washing tank 3 and shorten the operation time.

  By providing a flow rate valve (not shown) capable of adjusting the flow rate by operating the handle between the upper water supply electromagnetic valve 35 and the shower nozzles 29a and 29b, the water spray angle and water spray amount of the shower nozzles 29a and 29b at the upper part of the rice washing tank 3 Therefore, it is possible to prevent adhesion of rice grains on the upper surface of the rice washing tank 3.

DESCRIPTION OF SYMBOLS 1 Rice-washing rice cooker 2 Rice storage tank 3 Rice-washing tank 6 Rice-cooking pot 17 Stirring rod 22 Drain valve 25 Flow rate sensor 27 Lower water supply pipe 28 Solenoid valve 29 Upper water supply pipe 29a Shower nozzle 29b Shower nozzle 31 Jacket part 35 Electromagnetic valve 41 Overflow pipe C Control part P2 Rice washing process P3 Zulu dipping process P5 Water adjustment process P6 Dropping process S Rice washer

Claims (4)

The rice washing process (P2) for washing the rice, the water soaking process (P3) for sprinkling the washed rice, the water addition / reduction process (P5) for supplying water depending on the amount of rice, the water addition / reduction and the rice are discharged. In the rice washing machine that can operate in the order of the dropping process (P6),
A rice washer characterized by comprising selection means for selecting to move to the water addition / reduction step (P5) without going through the raising dipping step (P3) after the rice washing step (P2).   The treatment time of the non-raising and dipping process (P3) is configured to be settable, and when the treatment time is within a specified time, the first water supply control is performed based on the flow rate sensor (25) during the water addition / reduction process (P5). When water is added / subtracted by a water addition / subtraction method, and the treatment time is longer than a prescribed time, a second amount of water is supplied to the rice washing tank (3) after a prescribed amount of water is supplied to control drainage for the prescribed time. The rice washing machine according to claim 1, wherein water is added / subtracted by a water addition / subtraction method.   2. The method according to claim 1, wherein, when the extra dipping step (P3) is excluded by the selection means, a specified time is provided from the water addition / subtraction step (P5) to the dropping step (P6). Rice washer.   The rice washing tank (3) is provided with a stirring rod (17) for agitating the contents, and a stirring step for actuating the stirring rod (17) during the lifting dipping step (P3) is provided. The rice washer according to any one of claims 1 to 3.

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