JPS6395013A - Rice-cake maker - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rice cake making machine that automatically makes rice cakes after steaming paddy rice in the same hopper.

Conventional technology In general, this type of mochi pounding machine steams unhulled rice in a hopper using steam drawn from a steam tank, and then manually switches the power to the motor to rotate the blades installed at the bottom of the hopper. By driving the machine, it was possible to pound rice cakes.

Various ideas have been made in the past regarding automatic switching from the "musu" process to the "tsuke" process.

For example, the one shown in Japanese Utility Model Publication No. 50-23026 was constructed with an electric control circuit as shown in FIG.

In the figure, reference numeral 1 denotes a thermoswitch installed in the steam tank.This thermoswitch 1 has a set side S connected to a heater 2 installed in the steam tank, and a reset side H connected to a motor switch 3 and the bottom of the hopper. A series circuit is connected to a motor 4 for rotationally driving the blades installed in the , and a series circuit of a buzzer switch 5 and a buzzer 6 is further connected in parallel to this series circuit. In other words, when the thermoswitch 1 is set to the set side H, the thermoswitch 1 detects the temperature rise in the steam tank when the "musu" stroke is completed, and switches the energization from the heater 2 side to the motor 4 and buzzer 6 side, It was an automatic transition to the ``Tsuku'' process.

Problems to be Solved by the Invention Generally, a steam tank is equipped with an automatic temperature controller. However, in this type of automatic switching type of "Connection 1", the temperature of the steam tank decreases during the "Connection" process, and as a result, the automatic temperature controller returns to normal and energizes the heater 2 side again. It turns out. One possible way to prevent this is to lower the return temperature of the automatic temperature controller, but in this case, it is almost impossible to set the return temperature when considering the return time in a low-temperature atmosphere and during continuous use. .

Therefore, in the conventional example described above, a thermoswitch 1 is provided instead of the automatic temperature controller to prevent the temperature from returning to the heater 2 side. However, the thermoswitch 1 has a more complicated structure than an automatic temperature controller, and furthermore, the position of the operating knob for operating the thermoswitch 1 is limited, and an operating piece from the operating knob to the thermoswitch 1 is required.
The structure was complex and not very productive.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a mochi pounding machine that has a simple configuration and is capable of automatically switching from the "musu" to the "tsuke" processes.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a simple device that detects the temperature rise during dry firing of the steam tank and switches the energization from the heater to the motor that rotates the blades. a steaming circuit in which a temperature regulator equipped with a pole double-throw terminal is connected in series with a steaming switch that turns on and off electricity to the heater and the heater via the normal temperature closed terminal of the temperature regulator;
A series body in which an automatic changeover switch that opens and closes in conjunction with the steaming switch via a normal temperature open terminal of the temperature regulator and a motor are connected in series, an auxiliary heater thermally provided in the temperature regulator, and the steaming switch. The automatic switching circuit includes a steaming circuit in which a series body connected in series is connected in parallel to the motor, and a mochi-pounding circuit in which a mochi-pounding switch and a mochi-pounding switch are connected in series.

Action From the above structure K, from the “Musu” process to “Tsuku”
In addition to being able to automatically switch to the "turn on" stroke during automatic switching, the temperature controller is kept warm by the heat generated by the auxiliary heater during the "turn on" stroke, so the temperature controller can be reset during the "turn on" stroke. This eliminates the need to interrupt the "attaching" process.

Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 4.

In the figure, 11 is the main body, 12 is a synthetic resin top frame that covers the upper opening of the main body 11, and a hopper 1 that serves both as a steamer and a rice cake making bowl, and whose inner surface is treated with fluororesin.
It is formed by covering 3.

Reference numeral 14 denotes a lid of the hopper 13, and reference numeral 16 denotes a synthetic resin blade housed in the center of the bottom of the hopper 13. This blade 16 is detachably connected to a rotating shaft of a motor 160 housed in the lower part of the main body 11. Reference numeral 17 denotes a steam tank which constitutes a steam generation chamber in the lower part of the ceiling frame 12 and whose inner surface is treated with fluororesin.A sheathed heater 18 is attached to the outer bottom of the steam tank 17, and a sheathed heater 18 is installed in the center part. is provided so as to pass through the rotation shaft of the motor 160.

Reference numeral 19 denotes a heat-sensitive plate made of a good thermal conductor such as an aluminum plate and formed into an abbreviated shape. etc., and this heat-sensitive plate 1
9 has a temperature regulator 20 on its front surface, and a nonflammable box-shaped wire-wound fixed resistor 21 (hereinafter referred to as a fixed resistor) which is an auxiliary heater on its back surface and is close to the temperature regulator 20 and is thermally sensitive. It is arranged. 22 is a fitting for mounting the fixed resistor 21; 23 is a temperature fuse for cutting off power to the sheathed heater 18 and motor 16 in the event of a short-circuit failure of the temperature regulator 2o; and 24 is a holding fitting for the temperature fuse 24.

Here, the heat conduction due to the contact between the mounting boss 17L of the steam tank 17 and the one end 192L of the heat sensitive plate 19 is lower than the heat conduction between the temperature regulator 20 and the one end 19b of the heat sensitive plate 19. The contact area is set.

Reference numeral 25 denotes a hopper mounting plate provided on the outer bottom of the hopper 13, and this hopper mounting plate 26 is removably engaged in an airtight manner via a backing 26 provided at the upper end of the steam tank 17. 27 is a lid opening device that opens the lid 14 by rotation of the motor 16.

Next, the electric circuit shown in FIG. 1 will be explained. 30 is a switch body, which includes a steaming switch 31, a mochi pounding switch 32, and an automatic changeover switch 3 for automatically changing between "musu" and "tsuke".
Consists of 3. Note that when the automatic changeover switch 33 is operated, the steaming switch 31 is also closed at the same time. 20 is a single-pole, double-throw type temperature controller, and this temperature controller 2o has a common terminal 201L, a normal temperature closed terminal 20b, and a normal temperature open terminal 200.
It is equipped with That is, when a predetermined temperature is reached, the electrical circuit is switched from the normal temperature closed terminal 20b side to the normal temperature open terminal 200 side. Also, when the temperature drops to a predetermined temperature, the terminal 2 automatically closes at normal temperature.
Return to 0b side. The steaming circuit 36, which is closed by the steaming switch 31 of the switch body 30, is a series circuit that connects the sheathed heater 18 and the steaming switch 31 via the temperature fuse 24, the common terminal 201L of the temperature regulator 20, and the normal temperature closed terminal 20b. It consists of The mochi pounding circuit 36' is composed of a series circuit that connects the motor 16 via the temperature fuse 24 and the mochi pounding switch 32. And again, automatic switching circuit 3 for “Musu” and “Tsuku”
7 is a series circuit that connects the automatic changeover switch 33 and the motor 16 via the steaming circuit 36 and the normal temperature open terminal 200 of the temperature regulator 2°, and a fixed resistor 21 and the steaming switch 31 between the motor 16. It consists of series bodies connected in parallel.

The operation of the mochi pounding machine constructed as described above will now be explained.

First, a predetermined amount of water is put into the steam tank 17, and unhulled rice is put into the hopper 13 to complete the preparation.

When "Musu" and "Tsuke" are performed continuously, the automatic switch 33 is operated to close the circuit together with the steaming switch 31, and the sheath heater 18 is energized, and the unhulled rice is steamed in the hopper 13 by steam. “Musu” process begins. When the evaporation of the water in the steam tank 17 is completed after a predetermined period of time has elapsed, the temperature of the steam tank 17 rises rapidly, and heat is transferred to the temperature controller 20 via the heat sensitive plate 19.

At this time, the temperature regulator 20 detects this conductive heat and switches the energization path from the normal temperature closed terminal 20b to the normal temperature open terminal 200 side,
While stopping the power supply to the sheathed heater 18,
The motor 16 and fixed resistor 21 are energized. As a result, a continuous and automatic "attachment" process begins. Incidentally, at the start of this "sticking" process, the lid 14 of the hopper 13 is opened by the lid opening device 27.

According to the experiments conducted by the present inventors, the sheathed heater 18
When the fixed resistor 21 is set to 20W at 0W, when the ``attachment'' process begins, the temperature stabilizes at around 100℃ in the ``connection'' process, and then rises to the operating temperature, as shown in Figure 4. The temperature of the vessel 2o does not follow the temperature drop of the steam tank 17, and is maintained almost stably at around 120° C. due to conduction heat from the fixed resistor 21.

Here, if we look at the temperature changes of the temperature regulator 20, the attachment boss 171N of the steam tank 17, and the one end 191L that is the attachment part of the heat-sensitive plate 19 to the steam tank 17, we can see that the temperature regulator 2o and heat sensitive plate 19
The temperature difference between the one end 19& of the steam tank 17 and the one end 19& of the heat-sensitive plate 19 is smaller than the temperature difference between the mounting boss 17& of the steam tank 17 and the one end 19& of the heat-sensitive plate 19. This indicates that the temperature controller 2o is working effectively to keep the temperature lower.

When the "pounding" process has elapsed for a predetermined period of time, the rice cake rises in the hopper 13, and the pounding of the rice cake is completed.

Next, when performing only the “musu” process, steam switch 31
The steaming process is carried out in a closed circuit, and steaming is completed after a predetermined period of time has elapsed in the same manner as above. Furthermore, upon completion of the “Musu” process,
The temperature regulator 20 operates in the same manner as described above, but since the automatic switch 33 is not closed, the sheath heater 18 only stops energizing it and does not shift to the "turn on" process.

Further, when only the "making" step is performed, the mochi pounding switch 32 is closed and the motor 16 is energized directly without going through the temperature regulator 2o. In this case, the fixed resistor 21 is not energized because the steam switch 31 is not closed. In addition, when performing only the "turn on" process as described above, the temperature regulator 2o does not operate, so it does not return in the middle of the "turn on" process, thus keeping the temperature regulator 20 warm. do not have to.

As described above, according to this embodiment, the temperature controller 2 is provided on the surface.
A heat-sensitive plate 19 having a fixed resistor 21 on the back side and a fixed resistor 21 on the back side is attached to the mounting boss 17 & of the steam tank 17.
However, in this case, compared to the heat conduction between the temperature regulator 2o and the one end 19& of the heat sensitive plate 19, the heat conduction between the mounting boss 17& of the steam tank 17 and the one end 19 of the heat sensitive plate 19 is
Since the temperature controller 20 is configured to reduce heat conduction between the steam tank 1 and the steam tank 1 when the steaming is completed,
It operates by reliably sensing the rapid temperature rise of 7, and in the "turn on" process, the fixed resistor 21 provided on the back side
Since the heat generated by the steam tank 17 does not escape to the steam tank 17 side and the temperature regulator 2o is effectively kept warm, the temperature regulator 20 will not return to normal state during the "turn on" process even at low temperatures in the middle of winter. As a result, you can make mochi pounding without failure.

Effects of the Invention As is clear from the above explanation, according to the present invention, a single-pole double-wire system that detects a temperature rise during dry firing of a steam tank and switches energization from the heater to the motor that rotates the blades. A steaming circuit in which a temperature regulator equipped with a throw-type terminal, a steaming switch that turns on and off electricity to the heater and the heater via a normal temperature closed terminal of the temperature regulator are connected in series; A series body in which an automatic changeover switch that opens and closes in conjunction with the steaming switch via a normal temperature open terminal and a motor are connected in series, and an auxiliary heater thermally provided in the temperature regulator and the steaming switch are connected in series. It consists of an automatic switching circuit that includes the steaming circuit connected in parallel to the motor, and a mochi pounding circuit that connects the mochi pounding switch and the motor in series. In addition to being able to automatically switch to the "Attachment" stroke, the temperature controller will no longer return during the "Attachment" stroke during automatic switching, and will not operate only during the "Musu" or only the "Tsu" stroke. In addition, it has various excellent effects, such as stopping power supply to the auxiliary heater only during the "turn on" process.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of a mochi making machine showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same mochi making machine, Fig. 3 is a longitudinal sectional view of the main parts of the mochi making machine, Figure 4 is a graph showing temperature changes in the main parts of the rice cake making machine, and Figure 6 is an electrical circuit diagram of a conventional rice cake making machine. 13...Hopper, 15...Blade, 1
6...Motor, 17...Steam tank, 18...Sheath heater, 19...
・・Thermal plate, 2o・・・Temperature controller, 21...
... Fixed resistor, 20 & ... Common terminal, 20
b...Normal temperature closed terminal, 200...Normal temperature open terminal, 31...Steaming switch, 32...
- Mochi pounding switch, 33...Automatic changeover switch, 35...Steaming circuit, 36...Mochi making circuit, 37...Automatic changeover circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person f6
-Motor re--Sheath eater- 20-Uzuyu T11 regulator 20t-Ichii use extension J,? -11 - Automatic suction switch f, 13-1 automatic gong sui, soup 35 - fish supination f3-1 in i3, So Tsuma - Fig. 4 Fig. 5

Claims (1)

[Claims] There is a hopper with mochi pounding blades built into the bottom, a steam tank equipped with a heater that generates steam that guides the steam into the hopper, and a temperature rise in the steam tank during dry baking is detected and the heater is energized. A temperature controller equipped with a single-pole, double-throw terminal that switches the energization to the motor that rotates the blades, and a steam switch that opens and closes the energization to the heater and the heater via the normal temperature closed terminal of the temperature controller. a steaming circuit which is connected in series with a steaming circuit, an automatic changeover switch which is opened and closed in conjunction with the steaming switch via the room temperature open terminal of the temperature regulator, and a motor which are connected in series; an automatic switching circuit including the steaming circuit by connecting an auxiliary heater and the steaming switch in series to the motor in parallel, and a mochi pounding circuit including the steaming circuit in series with the mochi pounding switch A rice cake making machine consisting of a circuit.