JP5929193B2 - Rice washing equipment - Google Patents

Description

  The present invention relates to a rice washing apparatus for washing rice and adjusting water.

Conventionally, after washing in a rice washing tank, water is added and dropped, and rice and an appropriate amount of water necessary for cooking are dropped into a rice cooker waiting downward (Patent Document 1).
In addition, it is set as the structure which can add and subtract water with a comparatively small capacity | capacitance rice washing tank by performing this water addition and subtraction several times even if the water adjustment which requires large quantities of water, such as a rice cake, is carried out (patent document 2).

JP2001-218676 Patent No. 3528320

  According to Patent Document 2, rice can be cooked without increasing the capacity of the washed rice tank even if the amount of cooked rice is large, but there is no disclosure about the front / rear hydration process and the rice discharge time, and the processing time is shortened and the remaining rice is processed. Consideration is required. In addition, there are two methods for adjusting the water level: one is to detect the water supply status with a flow sensor, and the other is to supply the rice washing tank to a full state, drain the water to a predetermined level, and adjust the amount of water remaining in the rice washing tank to an appropriate amount. Each has advantages and disadvantages. The present invention intends to reduce the capacity of the rice-washing tank and to adjust the water appropriately according to the amount of rice to be cooked.

In order to solve this technical problem, the present invention takes the following technical means.
That is, the invention according to claim 1
In the rice washing apparatus that performs the washing step for washing the introduced rice and the water addition / reduction step for rice cooking in the rice washing tank (7), the amount of water (Qn) required for rice cooking from the amount of rice (Rn) supplied into the rice washing tank (7) ) For calculating the required water amount (C3), and the water adding and subtracting step is performed by washing the supplied water amount (Q ′) smaller than the required water amount (Qn) calculated by the required water amount calculating unit (C3). The pre-stage water adjustment process (X1) to be supplied to the rice washing tank (7) where the subsequent rice is present, and the required water quantity (Qn) and the pre-stage water adjustment quantity after dropping and discharging the water and rice of this pre-stage water adjustment process (X1) (Q ') comprises a post-stage water adjustment process (X2) for supplying the amount of water that is different from the washing rice tank (7), and drops and discharges water from the post-stage water adjustment process (X2) .
Water supply pipes (9, 16) for supplying water to the rice washing tank (7), flow rate sensors (22, 22D) for detecting the amount of water supplied from the water supply pipes (9, 16), and washing water during the washing process Water drainage pipe (11) used when draining water, a full water detection sensor (13) provided in the full water area of the rice washing tank (7), and a water drainage pipe (12) are provided. To adjust the amount of water in the rice washing tank (7), the first water adjustment control means (C1) for supplying the set amount of water while detecting the flow rate by the flow rate sensor (22), and the full water detection sensor (13) detect the water. And a second water moderation control means (C2) for adjusting and controlling the amount of drainage until the set amount of water is reached. When the amount of rice in the rice washing tank (7) is greater than or equal to a predetermined amount (γ), the second water moderation control Pre-stage water adjustment process (X1) and post-stage water adjustment work by means (C2) And rice washing device configured with supplying necessary amount of water (Qn) by (X2).

The invention described in claim 2
When selection means (C4) for selecting whether the rice to be washed is non-washed rice or normal white rice, or identification means (C4) for identifying which of these is selected, and when washing-free rice is selected or identified Is provided with wash-free rice water amount correction means (C5) for correcting the calculated water amount (Qn) based on the required water amount calculation means (C3) to a preset wash-free rice water amount (Qm), and selecting or identifying the wash-free rice When it is, it is set as the rice washing apparatus of Claim 1 made into the structure which water-supplys required water quantity (Qm) by a front | former stage water adjustment process (X1) and a back | latter stage water adjustment process (X2) .

  In the first aspect of the invention, in the pre-stage water adjustment step (X1), for example, 90% of the required amount of water (Qn) (Q ') is supplied and the water and rice are discharged into a container such as a rice cooker. Then, by supplying the remaining amount of water in the post-stage water adjustment process A (X2), the necessary water amount (Qn) can be secured in the container and the necessary water amount (Qn) is secured in the washing rice tank (7) at a time. Therefore, it is sufficient to secure a smaller amount of water, and the washing tank (7) can be downsized.

Further , when the amount of rice in the rice washing tank (7) is equal to or greater than a predetermined amount (γ), the necessary water amount (Qn) is obtained by the first-stage water adjustment process (X1) and the second-stage water adjustment process (X2) by the second water adjustment control means (C2). ) Is supplied, it is possible to reduce waste water while increasing the water accuracy.

In the invention according to claim 2, in the case of the same amount of rice, it is commonly used that washing-free rice slightly increases the amount of water compared to standard white rice. The rice washing tank (7) can be downsized by adopting the front / rear stage water addition / reduction steps (X1, X2).

Front view of the rice-washing rice cooker Side view of the rice-washing rice cooker A figure explaining the cover as seen from the plane Schematic diagram showing water supply and drainage Control block diagram Flow chart Flow chart Flow chart Flow chart Flow chart Time chart diagram (I) (b) (c) Cutting end view of the rice washing tank (B) Perspective view of rice storage section, (b) (c) Cross-sectional view of a part thereof (A) Perspective view of the lower part of the fuselage frame, (B) Partial plan view thereof

  The basic structure of the rice-washing rice cooker which is embodiment of this invention is demonstrated based on a figure.

A rice storage box 2 is attached to the machine body frame 1, and a rice washer 3 is attached to the lower part of the rice storage box 2. Below the rice washer 3, rice cookers 4, 4 placed on the gas stove are provided at the left and right positions, and these rice cookers 4, 4 are placed on the left and right drawers 5, 5 together with the gas stove. It is configured to be pulled out to the front side independently.
As described above, the rice-washing rice cooker of this embodiment is provided with two rice cookers 4 and 4 arranged in parallel on the left and right sides, and the rice storage 2 and the rice washer 3 are integrated with the left and right along the body frame 1. It is set as the structure which can carry out sliding movement above the rice cooking pots 4 and 4.

  An operation panel 6 with a built-in control unit B is provided on the front side of the rice storage 2 so that desired rice washing rice cooking control can be executed.

  The rice washing machine 3 includes a conical hopper-shaped rice washing tank 7. The rice washing tank 7 is supported in a suspended manner on the machine body frame 1 so as to correspond to the lower surface of the feeding and discharging portion of the rice storage 2. An opening / closing window 8 for inspection in the rice washing tank 7 is formed on the side surface of the rice washing tank 7, a stirring rod 18 that rotates around the vertical axis 18 a is provided inside, and a circular shape in plan view covering the periphery is provided at the lower end portion. The jacket portion 19 is attached. At the boundary between the lower part of the hopper-like part of the rice washing tank 7 and the jacket part 19, a filter made of a net-like body having an opening to the extent that rice grains do not leak is provided. The jacket part 19 has a lower water supply pipe 9 for supplying cleaning water from the lower part of the rice washing tank 7, an air pipe 10 for supplying air for generating bubbles during washing in the rice washing tank 7, and draining the washing water. For this purpose, a washing water drain pipe 11 and a water drainage pipe 12 for draining water are connected.

  A full water detection sensor 13 is provided in a full water area above the rice washing tank 7. It can detect the presence or absence of water, and turns on when water is detected as the water level rises, and turns off when water is not detected when the water level falls. An overflow port 14 is provided above the full water detection sensor 13, and an overflow drain pipe 15 is connected to the overflow port 14. And the nozzle as the water supply port 16a of the upper water supply pipe | tube 16 which supplies the water for water adjustment is provided in the upper surface of the rice washing tank 7, and it is provided.

Further, a dropping valve 21 for opening and closing the hopper-like lower end opening 7E is provided at the lower part of the rice washing tank 7. The dropping valve 21 is attached to the lower end of the vertical operating arm 21a, and is configured to open and close the opening 7E in conjunction with the vertical movement of the operating arm 21a.
The upper water supply pipe 16 and the lower water supply pipe 9 are branched from the downstream side of the faucet 20 of the water source (water supply) 17 for supplying the cleaning water and the water supply / reduction water. 23, and the lower water supply pipe 9 is provided with a lower water supply pipe valve 24. The air pipe 10 is connected to the compressor 25.

  The cleaning water drain pipe 11 is provided with a cleaning water drain pipe valve 26, and the water adjustment water drain pipe 12 is provided with a water adjustment water drain pipe valve 27, and downstream of the cleaning water drain pipe valve 26 and the water adjustment water drain pipe valve 27. Joins the drainage box 29.

  Next, the outline of the rice washing rice cooking process will be described. The basic flowchart shows a diagram.

  When the operator sets the amount of rice to be cooked on the operation panel 6 and operates a start switch (not shown), the control unit C activates each part, and the rice in the storage box is set on the operation panel 6. The amount of rice Rn is supplied to the rice washing tank 7 as the feed rotary valve (not shown) rotates (step 103 in FIG. 6, rice metering / supplying step).

Next, the lower water supply pipe valve 24 is opened, and the water that has passed through the lower water supply pipe 9 is supplied into the rice washing tank 7 through the jacket portion 19, and the compressor 25 is driven to supply air from the air pipe 10. Bubbles are generated in the water.
By the stirring of the stirring rod 18 rotating around the vertical axis 18a and the action of bubbles, the bubbling water in the water stream acts on the rice grains and the rice in the rice washing tank 7 is washed (step 104, rice washing step). When the rice washing process is completed, the lower water supply pipe valve 24 is closed, and the compressor 25 and the stirring rod 18 are stopped. After the washing process, the washing water drain pipe valve 26 is opened and the washing water is drained from the washing water drain pipe 11 to the drain box 29.

  The water adjustment step (step 105) after the rice washing step will be described in detail below.

As described above, water is supplied from the upper portion of the rice washing tank 7 through the upper water supply pipe 16, and the flow sensor 22 is provided in the middle thereof. Water can be supplied from the lower side of the rice washing tank 7 by the lower water supply pipe 9 of the jacket portion 19. In the middle of the lower water supply pipe 9, a flow sensor 22D is provided.
There are the following methods for adding water. After the rice washing process, the upper water supply pipe valve 23 or the lower water supply pipe valve 24 is opened, and water is added or reduced from the upper water supply pipe 16 or the lower water supply pipe 9 into the rice washing tank 7. This water addition / subtraction water is the amount of water corresponding to the amount of rice Rn supplied to the rice washing tank 7. The control unit C includes a required water amount calculation unit C3, and the required water amount Qn is calculated in advance by the rice amount Rn or set based on a calculation table. A method based on the first water adjustment control means X1 that obtains a set water amount based on the flow rate detection by the flow rate sensor 22 or 22D, or the full water detection sensor 13 that supplies the water amount Qn simultaneously with the upper water supply pipe 16, the lower water supply pipe 9, or the upper and lower water supply pipes. After the full water is detected, the water supply is shut off, and then the water drainage pipe valve 27 for water adjustment is opened, and the drainage amount En from the moment when the full water detection sensor 13 is detected to the time when the water detection is detected to the set water amount is adjusted and controlled. There is a method based on the two-water mode control means X2. It should be noted that the detection of the waste water amount En based on the second water control / control unit X2 is a method of obtaining by the calculation formula En≈αTE (α is a constant) by managing the open time TE of the water control / drainage drain valve 27, There are a method based on the detection result of a drainage flow sensor (not shown) provided on the lower side of the pipe valve 27, a method for managing the weight of the rice washing tank 7, and the like.
Here, the improved water addition / reduction process of the present invention will be described.

  Supply water amount Q ′ = (Qn−β * Qn) (where β is set to be less than the required water amount Qn calculated by the required water amount calculating means C3 for calculating the required rice cooking water amount Qn from the rice amount Rn in the rice washing tank , A constant value of about 0.1) is supplied to the rice washing tank 7 through the upper water supply pipe 16 or the lower water supply pipe 9, and the water and rice of this front stage water adjustment process X1 are dropped into the rice cooker 4. After the discharge, a post-stage water control process X2 is provided for supplying the water amount (β * Qn) between the required water quantity and the pre-stage water control quantity from the upper water supply pipe 16 to the washing tank 7. 4 is configured to be discharged.

  In the above-described embodiment, the water quantity Q ′ that is 90% of the required water quantity Qn is supplied in the front stage water adjustment process X1, and the water and rice are discharged to the rice cooker 4 by the opening operation of the dropping valve 21. The required amount of water Qn can be secured in the rice cooker 4 by supplying 10% of the amount of water by the valve opening operation in the subsequent stage water addition / subtraction process X2. If comprised in this way, it is not necessary to ensure the required amount of water Qn in the rice washing tank 7 at once, and the amount of water smaller than this is sufficient, and the rice washing tank 7 can be reduced in size. In addition, since it is the structure which supplies with the upper water supply pipe | tube 16 in the back | latter stage water adjustment process X2, there exists an effect which can wash | clean the inner periphery of the rice washing tank 7 with the diffusion water from a nozzle front-end | tip.

In FIG. 7, the required water amount calculation means C3 calculates the required water amount Qn from the preset amount of cooked rice, that is, the input rice amount Rn from the rice storage 2 (step 201). The rice washing process (step 202) is followed by water addition / reduction processing. First, the water supply amount Q ′ is calculated and the pre-stage water adjustment process X1 starts (steps 203 and 204), and when the water supply quantity Q ′ is reached, the pre-stage water adjustment process X1 ends (step 205). Next, the rice and the pre-stage water adjustment water Q 'are dropped and discharged to the rice cooker 4 waiting for the drop valve 21 at the lower end of the rice washing tank 7 to open and the lid to open downward (step 206).
Replenishment of the amount of water (= Qn−Q ′) that is deficient in the water supply amount Q ′ in the preceding stage water adjustment / control step X1 is performed in the rear stage water adjustment / control step X2, and at the start (step 207), the water supply nozzle of the upper water supply pipe 16 Then, the water is washed from above the rice washing tank 7 toward the inner wall (step 208). At this time, the water supply amount is detected by the flow rate sensor 22 provided in the middle of the upper water supply pipe 16, and when the detected water amount becomes the above-mentioned insufficient water amount, the post-stage water adjustment process X2 ends (steps 209 to 211). Then, this post-stage water addition / subtraction water is added to the rice cooker 4 by opening the dropping valve 21 at the lower end of the rice washing tank 7 (step 212).

  As described above, water is added and subtracted in two steps (or three or more steps), so it can handle a large amount of cooked rice without preparing a large washing tank 7 with a large tank capacity. it can. In addition, as described above, the water supply in the front stage water adjustment process X1 is performed from the lower supply pipe 9, and the water supply in the rear stage water adjustment process X2 is performed from the upper supply pipe 16, so that the water adjustment amount can be set stably and accurately. And the remaining rice in the washing tank 7 can be reduced.

  In the embodiment shown in FIG. 7, the start of the subsequent water addition / reduction process in step 207 may be started in the middle of the previous stage water addition / reduction and rice dropping / discharge in step 206. If comprised in this way, the injection | throwing-in time of the back | latter stage water addition / reduction by a water supply nozzle can be shortened, and this start time acts on the rice in a fluid state for dropping discharge, and reduces adhesion to a wall surface.

  Further, in the latter-stage water adjustment process X2, there is an effect of further shortening the time by always opening the unillustrated drop valve at the lower end of the rice washing tank 7.

  In the example of FIG. 7, waste water waste is reduced by configuring the pre-stage water adjustment step as follows. That is, the required water amount Qn is calculated from the amount of cooked rice set, and the pre-stage water adjustment process is started (steps 301 to 303). Here, when the rice amount Rn in the rice washing tank 7 is equal to or greater than the predetermined amount γ, the second water control / control unit C2 performs the pre-stage water control process X1 (step 305), and then the post-stage water control process X2 is necessary. It is configured to supply water (FIG. 8). Since the water supply by the second water moderation control means C2 is configured to obtain a predetermined water level by managing the drainage amount En after it has been stored in the washing tank 7 until it reaches the full water level, the first water is poured in a water discharge state. There is an advantage that the accuracy to a predetermined amount of water can be increased as compared with the control unit C1. However, since the step of temporarily storing water up to the full water area by the second water addition / decrease control means C2 is necessary, more water than necessary must be supplied to the washing tank 7, and the less rice is cooked, the more waste of water occurs. Due to the above circumstances, the water addition / reduction control means C2 is executed only when the rice amount Rn is equal to or greater than the predetermined amount γ (for example, 80% or more of the maximum cooked rice amount) as described above. Waste water can be reduced while increasing In step 304, when the amount of cooked rice Rn is equal to or less than the predetermined amount γ, the amount of water supplied is detected by sprinkling water from the water supply nozzle of the upper water supply pipe 16 in a discharge manner toward the inner wall of the rice washing tank 7. Perform (step 306).

  Here, in FIG. 8, when the first water amount control means C <b> 1 is executed, in the above-described embodiment, the predetermined amount of water is obtained by detecting the amount of water supplied from the upper water supply pipe 16. It is good also as a structure which detects the amount of water supply with the flow sensor 22D, supplying water. Switching means for selecting such upper water supply or lower water supply is provided, and an appropriate one may be selected in view of actual water supply circumstances and environment. Moreover, a predetermined water amount can be obtained by both the lower water supply and the upper water supply. If comprised in this way, shortening of the pre-stage water adjustment process X1 can be aimed at, and work time can be shortened.

  Further, there is provided a no-wash rice selection switch 30 as a selection means for selecting whether the rice to be washed is non-washed rice or normal white rice. When this switch 30 selects no-wash rice, the pre-stage water control step X1 and the post-stage water The required amount of water Qm is obtained with the adjusting step X2. In the case of the same amount of rice, it is commonly used to wash water a little more with non-washed rice compared to standard white rice (for example, about 10-15% more than normal white rice) The rice washing tank 7 can be downsized by adopting the front / rear stage water addition / reduction steps X1 and X2 corresponding to the above. In the above-mentioned embodiment, the washing-free rice selection switch 30 selects the washing-free rice or the normal white rice. However, it is an identification that discriminates the washing-free rice from the normal white rice by directly optically detecting wrinkles on the rice grains. The means C4 may be configured, and the identifying means C4 may be configured to detect that the rice is not washed by detecting the state of floating rice cake in the rice washing tank 7.

  Next, with respect to FIG. 9, when the washing-free rice is selected according to the identification result of the selection means 30 or the identification means C4 for selecting whether the rice to be washed is non-washed rice or normal white rice, the control unit C corrects the washing-free water quantity. The calculated amount of water Qn is corrected by means C5 to a predetermined amount of unwashed rice water Qm (= δQn, where δ is 1.10 to 1.15) (steps 401 to 404). Incidentally, the allowable washing amount Rex for non-washed rice is set to be a predetermined small amount with respect to the maximum washing amount Rmax for normal white rice, and a warning is given with a buzzer when a washing amount exceeding this is set (steps 405 and 406). In addition, when it determines with Rn> Rex at step 405, the required amount of water Qm can be ensured predetermined by resetting the amount of cooked rice (step 401) (steps 402-405). In addition, when it determines with normal white rice in step 403, it sets to the required water quantity Qn (step 407).

  When the dropping valve 21 is opened from the bottom of the rice washing tank 7, the rice and the hydrated water are dropped and discharged to the rice cooker 4 waiting with the lid open. After this, the rice cooking process is started.

  As described above, the rice weighing / feeding step, the rice washing step, the water addition / reduction step, and the rice cooking step can be performed automatically and continuously (steps 101 to 107 in FIG. 6).

  In addition, a normal function that immediately performs the rice-washing rice cooking process when the operation mode of rice-washing rice is set on the operation panel 6 and a reservation function that specifies the date and time such as the rice cooking start time and rice cooking completion time in advance on the operation panel 6 Is possible. That is, this reservation function can be set in advance so that the rice cooked in the morning of the previous day, for example, the next morning is completed.

  FIG. 10 relates to a response when the flow rate sensors 22 and 22D become abnormal when the first water level control unit C1 is employed in the water level control step.

  Based on the flowchart, when the rice-washing rice cooking conditions are set and the start switch is turned on, the operation of each unit and the acquisition of various data are performed (steps 501 to 503). Immediately after the flow rate check of the flow rate sensor 22 (22D) is started (step 504), it is determined whether or not the flow rate is approximately zero (step 505). If it is determined that the state is substantially zero, a buzzer warning is issued. (Step 506), a screen asking whether to forget to open the water supply main tap 20 is displayed (Step 507). When the operator inputs “Yes” and “No” answers, and “Yes” is selected, the main plug 20 is open. Shifts to the second water addition / subtraction control means C2 (steps 508 to 510), water supply continues or is switched to water supply from both the upper and lower water supply pipes, and the wastewater treatment is performed on the basis of the detection result of the full water detection sensor 13. The amount of water is obtained (step 514). In this case, a display indicating “Emergency operation” is output on the screen (step 514).

  As described above, when an abnormality of the flow sensor 22 (22D) is detected during the water adjustment setting by the execution of the first water adjustment control means C1, the second water is left as it is regardless of the water storage state in the rice washing tank 7. By switching to the moderation control means C2, the water leveling process can be performed based on the detection status of the full water detection sensor 13, and there is no risk of work interruption.

  FIG. 11 shows a case in which dropping and discharging performance is improved by driving the stirring rod 18 together with the opening operation of the dropping valve 21 and the generation of bubbles from the air pipe 10 together with the opening operation of the dropping valve 21. This relates to an improved configuration.

  Conventionally, when water addition / reduction is executed by the second water addition / decrease control means, each output of bubble supply by the air pipe 10 for generating bubbles and driving of the stirring rod 18 is performed prior to the opening operation output of the dropping valve. Although the composition was promoted to improve the washing effect of the washed rice, there was a drawback that the rice and water flowed out from the overflow port 14. Therefore, when the amount of cooked rice is more than a predetermined value, by using simultaneous output instead of the preceding output (FIG. 11 (b)), it is possible to eliminate the conventional drawbacks and reduce the remaining rice, and in turn wash and add water. This contributes to shortening the time.

  By the way, the amount of cooked rice and the amount of water added are closely related (for example, about 1.3 times the standard time). However, a slight increase / decrease correction is required depending on the amount of cooked rice, the degree of old rice, the preference for the hardness of the cooked rice, and the like. Therefore, an increase / decrease correction dial 31 is provided as a set water amount correction means that can be adjusted to increase / decrease with respect to the standard setting step by step so that the correction can be arbitrarily set. At the time of the water addition / reduction process, a water addition / reduction process assuming a standard setting is performed in the front-stage water adjustment / reduction process, and a necessary incremental water supply is performed by an increase-side correction in the latter-stage water adjustment / reduction process. At this time, if the incremental water supply is covered by the water supply from the lower water supply pipe 9 with the drop valve 21 opened, the rice washing tank 7 can be used for a large amount of rice and soft rice without increasing the capacity.

  FIG. 12 shows an improved structure of the rice washing tank 7. The rice washing tank 7 is configured to be superposed on the fixing plate portion 1A having the rice feed-out portion opened from the rice storage of the machine body frame 1 and fixed with the bolt 32. The flange portion 7a of the rice washing tank 7 and the fixing plate 1A For example, a silicon packing 32 is interposed therebetween. The packing 32 is formed in a disk shape of either an integral shape or a split type along the flange portion 7a. In its cross section, it is provided between the outer edge portion 7b of the flange portion 7a formed in a disc shape of the rice washing tank 7 and the inner edge side bent portion 7c of the flange portion 7a, and the outer edge portion surrounds the outer edge portion 7b. A fitting groove 32a of the portion 7b is formed, and a cross-sectional triangular portion 32b as an inner peripheral side locking portion is formed on the inner peripheral side (FIG. 12 (A)). When the triangular portion 32b is attached to the flange portion 7a, the convex portion 32c facing obliquely inward and upward and the downward convex portion 32d along the inner edge side bent portion 7c appear.

  That is, in the free length of the packing 32 (FIG. 12 (a)), the inner peripheral side locking portion formed in a substantially right angle from the bottom of the fitting groove 32a of the packing 32 to the joining surface 32e of the packing 32. (Triangular portion) The distance Lp between the vertical surface 32f of 32b and the distance Lt from the outer edge portion 7b of the flange portion 7a of the rice washing tank 7 to the inner periphery of the tank 7 is formed small (Lp <Lt). When the packing 32 is attached to the portion 7a, it is formed so that the upwardly protruding ridges 32c and the downwardly protruding ridges 32d appear on the joint surface 32e and the engaging portion 32b that are originally formed flush with each other. (Same (b)).

  If comprised in this way, if the flange part 7a of the rice-washing tank 7 will be joined to the fixing plate part 31, and the bolt 33 will be fixed, as shown in FIG. The tip of the downward ridge 32d is in close contact with the inner periphery of the upper part of the rice washing tank 7 to improve water tightness.

  FIG. 13 relates to an improvement in the mounting structure of the fan unit 35 that is attached to the peripheral wall portion 2a of the rice storage box 2 and flows and discharges hot air around the mechanism portion. It is configured so as to be selectively attachable to the left and right side wall portions of the rice storage box 2, and mounting holes 2b, 2b are formed in the left and right side walls of the rice storage box 2, and a fan unit 35 is provided to the mounting hole 2b. Alternatively, the lid 36 is selectively attached. With this configuration, when a heat source such as a fryer exists in the vicinity of the main body frame 1, the fan unit 36 is mounted on the opposite side to prevent entry of hot air and oil into the mechanism. The fan unit 35 is detachably provided with a bolt, and the lid 36 is detachably provided with a punching metal or the like.

  FIG. 14 relates to a mounting configuration of the drainage hose 40 connected to the drainage box 29. When the drainage hose 40 connects the drainage port of the drainage box 29 and the drainage port 41 provided in the building, FIG. By forming the holding holes 42, 42 in the legs 1B, 1B surrounding the rice cooker 4 parts, and supporting the drain hose 40 midway in the holding hole 42, each separate supporting configuration is unnecessary and has a simple configuration. Clean the installation floor. At this time, the holding hole 42 is set to a height L at a substantially center between the height of the drainage elbow 43 provided directly in the drainage box 29 and the floor surface 44. The drainage elbow 43 is provided so as to be rotatable around the horizontal axis, and can be directed to either the left or right direction, and can be attached to the one that is convenient for installation.

7 Washing tank 9 Lower water supply pipe 11 Washing water drainage pipe 12 Water drainage pipe 13 Water filling detection sensor 16 Upper water supply pipe 22 Flow rate sensor 22D Flow rate sensor 26 Washing water drainage valve 30 No wash rice setting switch (no wash rice selection means)
31 Increase / decrease correction dial (set water amount correction means)
C control unit C1 first water adjustment control means C2 second water adjustment control means C3 required water amount calculation means C4 unwashed rice identification means C5 unwashed rice water amount correction means X1 first stage water adjustment process X2 latter stage water adjustment process

Claims (2)

In the rice washing apparatus that performs the washing step for washing the introduced rice and the water addition / reduction step for rice cooking in the rice washing tank (7), the amount of water (Qn) required for rice cooking from the amount of rice (Rn) supplied into the rice washing tank (7) ) For calculating the required water amount (C3), and the water adding and subtracting step is performed by washing the supplied water amount (Q ′) smaller than the required water amount (Qn) calculated by the required water amount calculating unit (C3). The pre-stage water adjustment process (X1) to be supplied to the rice washing tank (7) where the subsequent rice is present, and the required water quantity (Qn) and the pre-stage water adjustment quantity after dropping and discharging the water and rice of this pre-stage water adjustment process (X1) (Q ') comprises a post-stage water adjustment process (X2) for supplying the amount of water that is different from the washing rice tank (7), and drops and discharges water from the post-stage water adjustment process (X2) .
Water supply pipes (9, 16) for supplying water to the rice washing tank (7), flow rate sensors (22, 22D) for detecting the amount of water supplied from the water supply pipes (9, 16), and washing water during the washing process Water drainage pipe (11) used when draining water, a full water detection sensor (13) provided in the full water area of the rice washing tank (7), and a water drainage pipe (12) are provided. To adjust the amount of water in the rice washing tank (7), the first water adjustment control means (C1) for supplying the set amount of water while detecting the flow rate by the flow rate sensor (22), and the full water detection sensor (13) detect the water. And a second water moderation control means (C2) for adjusting and controlling the amount of drainage until the set amount of water is reached. When the amount of rice in the rice washing tank (7) is greater than or equal to a predetermined amount (γ), the second water moderation control Pre-stage water adjustment process (X1) and post-stage water adjustment work by means (C2) (X2) rice washing device configured with supplying necessary amount of water (Qn) by. When selection means (C4) for selecting whether the rice to be washed is non-washed rice or normal white rice, or identification means (C4) for identifying which of these is selected, and when washing-free rice is selected or identified Is provided with wash-free rice water amount correction means (C5) for correcting the calculated water amount (Qn) based on the required water amount calculation means (C3) to a preset wash-free rice water amount (Qm), and selecting or identifying the wash-free rice The rice washing apparatus according to claim 1 , wherein the required amount of water (Qm) is supplied by the front stage water adjustment process (X1) and the rear stage water adjustment process (X2) .

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