JP2014161774A - Rice washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice washer which can supply water from an upper side part and a lower side part of a rice washing tank, and can prevent a backflow of washing water in the rice washing tank from a lower side water supply passage to an upper side water supply passage to enhance rice washing efficiency and prevent contamination of a check valve.SOLUTION: Water can be supplied from a lower side of a lower side water supply pipe (16) connected to a water supply source to a lower side part of a rice washing tank (11) of a rice washing part (3). Water can be supplied from a lower side of an upper side water supply pipe (22) branched from a middle part of the lower side water supply pipe (16) to an upper side part of the rice washing tank (11). The lower side water supply pipe (16) is arranged so as to be vertically along a side surface of the rice washing tank (11). An overflow port (29) is arranged on a part of the lower side water supply pipe (16) opposite to an upper side part of the rice washing tank (11). A check valve 19 for preventing a backflow to the upper side water supply pipe (22) is arranged on an upper part from a lower end part of the overflow port (29).

Description

  The present invention relates to a rice washing machine.

  In the rice-washing rice cooker, the rice storage unit, washing unit, and rice cooking unit are arranged sequentially from the upper side to the lower side, and the upper water supply outlet that can communicate with the water supply source is connected to the upper part of the washing tank of the washing unit. The discharge port of the lower water supply channel is connected to the jacket at the bottom of the cleaning tank, and water can be supplied from the upper and lower sides of the cleaning tank, and a check valve is provided in the middle of the upper water supply channel. Known (Patent Document 1).

JP 2001-218676 A

  The invention of the prior art communicates the lower side of the upper water supply channel and the lower water supply channel to the upper and lower portions of the cleaning tank, and the upper water supply channel and the lower water supply channel are provided with an upper solenoid valve and a lower solenoid valve, respectively. It is the structure which provided the check valve in the upper side of the upper side solenoid valve of an upper side water supply path. And it is the structure which supplies water from both upper and lower sides of a washing tank, wash | cleans rice, and opens and closes an upper solenoid valve in the state which closed the lower solenoid valve in the water adjustment after rice washing.

  In the above configuration, an upper solenoid valve and a lower solenoid valve are respectively provided in the upper water supply channel and the lower water supply channel, and the opening and closing operation of the upper solenoid valve and the lower solenoid valve is required in the rice washing process. The problem of high costs arises.

  Therefore, the present invention is a rice washing machine in which a rice storage unit, a washing unit, and a rice cooking unit are sequentially arranged from the upper side to the lower side, and water can be supplied from the upper side water supply channel and the lower side water supply channel to the upper side and the lower side of the washing tank. However, while having a simple configuration in which a single solenoid valve is provided in the upper water supply channel and the lower water supply channel, the washing water in the cleaning tank is prevented from flowing backward from the lower water supply channel to the upper water supply channel, It tries to solve the problem.

  The invention of claim 1 is configured such that water can be supplied from the lower side of the lower water supply pipe (16) connected to the water supply source to the lower part of the rice washing tank (11), and the lower water supply pipe (16) Is provided with a solenoid valve (20), branched from the lower side of the solenoid valve (20) of the lower water supply pipe (16) to the upper water supply pipe (22) and connected to the upper part of the rice washing tank (11), The lower water supply pipe (16) is disposed along the vertical direction on the side surface of the rice washing tank (11), and the lower water supply pipe (16) is disposed at a portion facing the upper portion of the rice washing tank (11). A check valve (19) for preventing backflow to the upper water supply pipe (22) is provided.

  According to a second aspect of the present invention, in the first aspect of the present invention, an overflow port (29) is provided in an upper portion of the rice washing tank (11), and the check valve is located above a lower end portion of the overflow port (29). (19) The rice-washing machine characterized by providing.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the check valve (19) and the lower water supply pipe (16) disposed on the upper side of the lower water supply pipe (16). The socket tube (35) disposed on the lower side of the bracket is detachably connected.

  According to the first aspect of the present invention, after the rice washing tank (11) is washed, it has a simple configuration in which a single electromagnetic valve (20) is disposed in the lower water supply pipe (16) and the upper water supply pipe (22). Water is prevented from flowing back from the lower water supply pipe (16) to the upper water supply pipe (22), and can be washed with clean water. In addition, by providing a check valve (19) at a position above the connecting portion of the lower water supply pipe (16) to the rice washing tank (11), a check valve ( 19) is less likely to be pickled, and contamination due to the check valve (19) can be reduced.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the check valve (19) is less likely to be submerged in the backflow water of the lower water supply pipe (16), and the check valve (19) Dirt due to wrinkles can be reduced.

  According to the invention of claim 3, in addition to the effects of claim 1 or claim 2, the check valve (19) and the lower side disposed on the upper side of the lower water supply pipe (16) Since the socket pipe (35) disposed on the lower side of the water supply pipe (16) is detachably connected, when the socket pipe (35) is removed from the check valve (19), the lower water supply pipe (16 ) Can be easily maintained with the check valve (19) still attached.

The perspective view of a rice washing rice cooker. The side view of a rice washing rice cooker. The side view which abbreviate | omitted a part of the rice-washing tank part. The side view which abbreviate | omitted a part of the rice-washing tank part. The perspective view of a rice storage part.

Embodiments of the present invention shown in the drawings will be described below.
The whole structure of the rice washing rice cooker provided with the present Example is demonstrated.
The rice-washing rice cooker 1 includes an upper rice storage unit 2 having a metering unit therein, a rice washing unit 3 that receives a predetermined amount of rice from the rice storage unit 2 and adjusts the washing and hydration, and the rice washing The rice cooker 4 is configured by a lower rice cooker 4 that receives the washed rice that has been watered and subtracted by the part 3 and a frame 5 that supports these. The rice cooker 4 is supported by a drawer 5 a of the frame 5 so as to be freely drawn out.

  An operation panel 7 is provided in front of the rice storage unit 2, and a display screen connected to the controller and an operation switch are provided on the operation panel 7, and an amount corresponding to an instruction from the rice storage unit 2 by the switch operation is provided. An automatic process is performed in which rice is supplied to the rice-washing unit 3, and then the rice washed in the rice-washing unit 3 is drained and dropped into the rice cooker 4.

  The rice storage unit 2 is provided with a hopper 55 for storing white rice. The hopper 55 is provided with a supply cylinder 56 that rotates about the horizontal axis. The supply cylinder 56 is driven to rotate by a motor so that the white rice is moved downward. To supply.

  The rice washing section 3 is provided with a rice washing tank 11. The upper portion of the rice washing tank 11 is formed in a cylindrical shape and the lower portion is formed in a conical hopper, and a diffusion blade 12 that rotates around a vertical axis 12 a is provided in the rice washing tank 11. It is rotated by a motor to wash the rice. A rice drainage passage (not shown) formed of a net is provided at the lower end of the rice washing tank 11, and a lowering valve 40 for opening and closing the rice drainage passage (not shown) is provided at the lower end of the rice washing tank 11, A lower end portion of the rice washing tank 11 and a rice drainage passage (not shown) are covered with a removable jacket 15.

  Further, the upper side of the water supply pipe Y is connected to the water supply source K, a solenoid valve (not shown) is provided in the middle, the lower side is branched to the upper and lower water supply pipes, and connected to the rice washing tank 11 to supply water from the upper and lower parts It is configured as follows.

  On the side of the rice washing tank 11, an air supply pipe 28 is arranged along the top and bottom, and its lower part is detachably attached to the jacket 15 at the bottom of the rice washing tank 11, and the upper end is overflow from the upper part of the rice washing tank 11. It is provided at a position higher than the mouth 29.

  In addition, a drop shaft 40a of the drop valve 40 is inserted and supported in a hollow portion of the vertical shaft 12a of the diffusion blade 12 so as to be movable up and down, and the drop shaft 40a is moved up and down by a drop motor (not shown). The rice and water can be dropped onto the rice cooker 4.

A drain port 41 is provided on the side wall of the jacket 15, the drain port 41 is configured to be opened and closed by an on-off valve 42, and drained from the drain pipe 14.
The rice cooker 4 includes a gas stove heating means 4a, a rice cooker 4b, a rice cooker lid 4c, and the like, and includes a shutter 43 that opens and closes a circular rice insertion hole opened at the center of the rice cooker lid 4c. The shutter 43 is configured to move in association with a shutter opening / closing arm 44 that reciprocally moves in the horizontal direction by a shutter forward / reverse motor to open and close the rice insertion hole.

  An operation panel 7 is provided on the front side surface of the box-shaped case of the rice storage unit 2. The operation panel 7 includes a manual operation unit, a rice cooking condition setting unit, and a reservation setting unit. The reservation setting unit is provided with day setting means with an LED display function for displaying from Saturday to Sunday, and the selected day of the week is lit and displayed by the LED. There is also provided a time hook number display means with an LED display function for displaying the current time, the total number of hooks and the planned number of hooks. Moreover, the process display part with an LED display function which displays whether it is rice cooking completion from rice replenishment or ignition is provided. The manual setting section is provided with switches such as a clock switch, a test switch, a metering switch, and a rice washing switch.

Next, the outline | summary of an effect | action of the rice-washing rice cooker 1 is demonstrated.
When the rice cooking setting work by the worker is completed and the start switch is turned on, the rice cooking work is started by a command of a controller (not shown) based on the rice cooking setting contents. First, the supply cylinder 56 of the rice storage unit 2 is rotated at a set rotational speed by the supply motor and the rice is fed out. When the set rotational speed is reached, the supply cylinder 56 is stopped and the rice supply operation is completed. Next, a solenoid valve (not shown) of the rice washing unit 3 is opened to supply water from the water supply source K to the water supply pipe Y and supplied from above and below the rice washing tank 11, and the stirring blades 12 are rotated so that the rice and water are stirred and washed. The

  Next, when the rice washing operation for a predetermined time is completed, water addition / reduction is executed, the dropping valve 40 is moved downward by the rotation of the dropping motor (not shown), the bottom of the rice washing tank 11 is opened, and the rice and water are cooked. Dropped to 4. Next, the heating means of the rice cooker 4 starts heating to start cooking rice, and when the cooking time for a predetermined time is finished, the heating is stopped and the cooking operation is finished.

Next, the water supply structure to the rice washing tank 11 is demonstrated based on FIG.
The upper side of the lower water supply pipe 16 is connected to the water supply pipe Y, the middle part of the lower water supply pipe 16 extends downward along the side surface of the rice washing tank 11, and the lower end communicates with the jacket 15. doing. In the lower water supply pipe 16, a flow sensor 21 and an electromagnetic valve 20 are sequentially arranged from the upper side to the lower side. The upper water supply pipe 22 is branched from the lower side of the electromagnetic valve 20 in the lower water supply pipe 16 through the branch connection pipe 17, the upper water supply pipe 22 is guided to the upper side of the rice washing tank 11, and then bent and extended downward to wash the rice. Water is supplied from the upper part of the tank 11.

  Then, a float type check valve 19 disposed on the lower side of the branch connection pipe 17 is disposed, and the check valve 19 is disposed above the upper end of the rice washing tank 11 to provide a lower water supply. Even if water flows backward in the pipe 16, it is blocked by the check valve 19 so that it does not flow back to the upper water supply pipe 22 side.

  According to the above configuration, even if the water in the rice washing tank 11 flows back through the lower water supply pipe 16, it is blocked by the float type check valve 19 and is prevented from returning to the rice washing tank 11 through the upper water supply pipe 22. Can do. Further, since the check valve 19 is disposed above the upper end of the rice washing tank 11, the check valve 19 is difficult to be immersed in the water flowing back through the lower water supply pipe 16, and is contained in the rice washing water. It is possible to prevent contamination due to the like.

Next, another embodiment of the water supply structure to the rice washing tank 11 will be described with reference to FIG.
The upper side of the lower water supply pipe 16 is connected to the water supply pipe Y, the middle part extends downward along the side surface of the rice washing tank 11 in the vertical direction, and the lower side end part communicates with the jacket 15. A check valve 19 is provided on the upper side of the lower water supply pipe 16, a socket pipe 35 is provided on the lower side of the lower water supply pipe 16, and the socket pipe 35 is detachably attached to and connected to the check valve 19. ing. And the check valve 19 is arrange | positioned in the upper site | part A rather than the lower end site | part of the overflow port 29 of the upper part of the rice washing tank 11. FIG.

  According to the said structure, even if the water of the rice washing tank 11 flows back through the lower side water supply pipe 16, it becomes difficult to immerse the check valve 19, and the stain | pollution | contamination prevention effect by the check valve | bulb etc. can be heightened. Further, by removing the socket pipe 35, maintenance can be facilitated such as removing the jacket 15 while the check valve 19 is attached to the lower water supply pipe 16.

  Further, the check valve 19 is provided with a float 19a that moves up and down inside, but if the float 19a bites in a foreign object, it may cause a malfunction. In this case, it is possible to easily take out the foreign matter by adopting a configuration in which the check valve 19 is attached and detached in the vicinity of the check valve 19.

  In addition, the check valve 19 is attached directly below the flange portion 57 (or the lower wall of the rice storage portion 2) formed at the upper end of the rice washing tank 11, so that the posture of the float 19a of the check valve 19 is improved. The operation of the check valve 19 can be improved. In addition, the lower water supply pipe 16 immediately above the flange portion 57 can be easily arranged.

Note that the check valve 19 can be stabilized in the up-and-down posture also in the embodiment of FIG. Needless to say, the branch connecting pipe 17 is detachable.
An area sensor 51 is provided below the operation panel 37. In the area sensor 51, when the heating means of the lower rice cooker 4 starts heating and the hot air rises and detects the set temperature, the detected rice cooking information is input to the controller. Has issued a warning “Be careful about burns, etc.” to improve safety.

  In addition, the rice cooking condition setting unit of the operation panel 37 is switched to the expansion mode by a predetermined switch operation, and the setting time of the alarm start can be set and changed by a predetermined switch operation.

Next, another embodiment of the rice storage unit 2 will be described with reference to FIG.
A foreign matter mixing prevention net 52 is stretched at the upper opening of the rice storage unit 2, the upper surface of the opening is closed with a lid, a transparent window 53 is provided on the front side of the foreign matter mixing prevention net 41, and the rice storage unit An opening / closing door 54 is provided on the front side portion of 2. According to the above-described configuration, it is convenient to check the accumulation of foreign substances such as stones from the window 53 by opening the open / close door 54.

DESCRIPTION OF SYMBOLS 1 Rice washing rice cooker 2 Rice storage part 3 Rice washing part 4 Rice cooking part 11 Rice washing tank 16 Lower water supply pipe 19 Check valve 20 Solenoid valve 22 Upper water supply pipe 29 Overflow port 35 Socket pipe

Claims (3)

  The lower water supply pipe (16) connected to the water supply source is configured so that water can be supplied from the lower side of the rice washing tank (11) to the lower water supply pipe (16), and the lower water supply pipe (16) is provided with a solenoid valve (20). An upper water supply pipe (22) is branched from the lower side of the solenoid valve (20) of the lower water supply pipe (16) and connected to the upper part of the rice washing tank (11), and the side surface of the rice washing tank (11) The lower water supply pipe (16) is disposed along the vertical direction, and the upper water supply pipe (22) is disposed at a portion of the lower water supply pipe (16) facing the upper portion of the rice washing tank (11). A rice washing machine, characterized in that a check valve (19) is provided to prevent backflow into the machine.   In the invention of claim 1, an overflow port (29) is provided in the upper part of the rice washing tank (11), and the check valve (19) is provided in a portion above the lower end portion of the overflow port (29). A rice washing machine characterized by   In the invention of claim 1 or 2, the check valve (19) disposed on the upper side of the lower water supply pipe (16) and the lower side of the lower water supply pipe (16). A rice washing machine characterized in that the socket pipe (35) is detachably connected.

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