JPH07122070B2 - Control device of oil press - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an oil squeezer capable of automatically squeezing an oil to be squeezed such as sesame, and is particularly useful as a control device for a domestic oil squeezer. It is what is done.

2. Description of the Related Art Household oil presses that squeeze sesame or the like generally install a transfer screw that tapers a rotating shaft that works with a motor shaft and forms a spiral portion on the outer peripheral edge of the transfer screw inside the oil pressing cylinder. A hopper with an input port for inputting oil to be extracted such as sesame is provided on the upper side, and an outlet for the squeezed oil and an outlet for the oil cake are installed under the transfer screw, respectively, and the oil is efficiently squeezed. A heater for heating the sesame to be squeezed is installed on the outer peripheral edge of the oil squeezing cylinder so as to be possible. When using, insert the oil can and the oil cake can into the oil outlet and the oil cake outlet, put the roasted sesame into the hopper-shaped sesame input port, and turn on the power to heat the heater. At the same time, the motor operates and the rotation of the motor causes the sesame seeds placed in the groove of the transfer screw to be transferred, squeezed and oiled.

However, in the conventional oil extractor as described above, when the power is turned on, the heating of the heater and the operation of the motor are performed at the same time, so the oil extraction starts while the oil extraction cylinder is not sufficiently preheated, and the oil extraction is performed due to the low temperature. The oil and oil cake that have collected together harden and stick to the transfer screw, which overloads the motor and causes it to stop. There was a problem of causing burnout of the motor.

Another problem is that it lacks the heater driving power supply control means for detecting the temperature of the oil pressing cylinder and adjusting it to an appropriate temperature, so that the oil pressing cylinder falls below or above the appropriate temperature during oil pressing and the oil pressing rate falls. Like If the degree is extremely low and is extremely lower than the proper temperature, the motor will be overloaded due to the reasons described above, causing the motor to burn out.If the temperature is excessively higher than the proper temperature, the sesame will burn. Not only will the quality of the oil decrease, but the temperature will be transmitted to the sesame input port to evaporate the water contained in the sesame in that part,
Sometimes sesame sticks to each other and hardens, blocking the inlet.

Still another problem is that since the function of continuously monitoring the oil extraction is not provided, the heater and motor will continue to operate and power will be wasted if the power is not shut off even after the oil has been compressed. That is, there is a risk that the oil press may break down.

Therefore, the object of the present invention is not only to improve the oil extraction rate and the quality of oil expressed by always maintaining the oil pressing cylinder at the optimum oil pressing temperature during the oil pressing start time or during oil pressing, and It is an object of the present invention to provide a control device for an oil squeezer that controls an oil squeezing process so as to prevent overloading of a motor and closing of an input port during oil squeezing.

Another object of the present invention is to provide a control device for an oil squeezer that automatically shuts off the power supply to the heater and the motor when the oil squeezing is completed.

Still another object of the present invention is to provide a control device for an oil expeller, which automatically detects if an overcurrent flows through the motor and automatically controls the power supply to the motor and the heater to be shut off automatically. .

Still another object of the present invention is to provide a control device for an oil squeezer that controls the supply power so that the oil squeezer can be used as both 100 V and 220 V power sources.

Means for Solving the Problems In order to achieve the above object, the present invention is provided with an input port for oil to be squeezed such as sesame in an oil press, and input detection means for detecting the presence or absence of the oil to be output at the input port, A temperature detecting means provided in the oil pressing cylinder following the charging port, for detecting the temperature of the oil pressing cylinder, a heating means provided in the oil pressing cylinder for heating the oil pressing cylinder, and a microprocessor connected to each of the above means. The microprocessor processes the outputs of the charging detecting means and the temperature detecting means, operates the heating means to heat the oil crushing cylinder when the oil to be squeezed exists in the charging port, and sets the temperature to the preset temperature. When the temperature detection means detects that the oil has been heated to, the motor power switching means of the oil compression cylinder is turned on, and the oil compression cylinder is turned on. The operation of turning off the motor power supply switching means and heating means after the time required for oil extraction and drainage of oil dregs has elapsed after the temperature of the hopper is maintained within a predetermined range and the input detection means no longer detects the presence of the oil to be squeezed The present invention provides a control device for an oil squeezer, which is characterized in that control is performed so that

In the above control device, the trigger synchronization circuit and 100V / 220
Connect the V power supply detection circuit and 100V / 220V motor tap switching circuit to the microprocessor, and use the 100V above before starting oil extraction.
The / 220V power supply detection circuit detects 100V or 220V and switches the tap of the motor tap switching circuit, and the above-mentioned overheating means is 100V power supply for the entire cycle of the power supply voltage, and 220V is 5V of the power supply voltage. By applying only one cycle for each cycle and by incorporating the program of the microprocessor so as to synchronize the trigger point of the heating means with the zero-close point by the power supply voltage trigger synchronization circuit and trigger the zero-close point The oil press can be used for both 100V / 220V.

In the present invention, a motor overcurrent detection circuit for detecting an overcurrent of the motor is provided and is connected to the microprocessor. If an overcurrent flows through the motor, the motor operation and the heating means of the motor are switched through the motor power switching means. It has a built-in microprocessor program that shuts down the operation so that it can automatically stop the operation of the oil press in the event of an abnormality, thus preventing a larger failure of the oil press.

Further, in the present invention, if the temperature detecting means and the motor switching means are configured to be connected to the preheating rising circuit, when the preheating of the oil squeezing cylinder is completed before the oil squeezing is started, the preheating temperature is appropriate for the oil squeezing cylinder during the oil squeezing. The temperature becomes close to or higher than the temperature, the load at the time of starting the motor is considerably reduced, and the starting is performed more smoothly.

Further, in the present invention, each operating state of the oil expeller can be identified by providing a circuit for displaying each operating state, that is, standby, preheating, operation, occurrence of an abnormality, 100V / 220V supply power, and the like. You can

According to such a control device for an oil expeller of the present invention, when power is supplied to the oil expeller, a program embedded in the microprocessor determines whether or not sesame has been put into the charging port before starting the oil expelling. It is confirmed by the input detection means, and if sesame is not already in the input port, it is confirmed and it continues to stand by. When it is detected that sesame has been fed into the charging port, the heating means is activated to preheat the oil pressing cylinder to an appropriate temperature for oil pressing, and the motor is operated through the motor power switching means to start oil pressing. During oil squeezing, the program incorporated in the microprocessor continuously checks whether the oil squeezing cylinder is maintained at the proper temperature through the temperature detecting means, and controls the operation of the heating means so that the proper temperature is maintained.

Therefore, sesame is always squeezed at the optimum temperature at the time of starting the squeezing and while the squeezing is in progress, so the squeezing rate is high and high quality oil can be squeezed to prevent unexpected stop of the motor and closing of the inlet. it can.

In addition, the microprocessor that constantly checks the state of sesame seeds in the input port, if there is no sesame in the input port, until the sesame in the oil-pressing cylinder is completely squeezed and the oil lees are completely discharged, that is, the oil extraction is completed. After waiting, the power of the motor and heater is automatically cut off, so that the waste of power is saved.

Example Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing an example of the present invention.

FIG. 1 is a schematic diagram in which a control device for an oil squeeze device of the present invention is connected to an oil squeeze device, and FIG. 2 is a circuit diagram of one embodiment of the control device for an oil squeeze device of the present invention. As shown in Figs. 1 and 2, the charging detection circuit (150) for detecting whether sesame has been charged or not has a resistor (R ₅ ) and an LED element (D ₁₁ ) connected in series, and a resistor (R _6, R _7, R ₈₎ and a photodiode (D ₁₂₎ of the bridging connection connecting the output to the input terminal of the comparator dexterity IC (IC _1), the microprocessor (15 the output of the IC (IC ₁₎
The LED element (D ₁₁ ) and the photodiode (D ₁₂ ) are configured to be connected to the 5th pin of 3), and when the sesame is put into the sesame input port (121) of the oil press, the LED element (D ₁₁₎ ) Is provided in the inlet so that the light emitted in () is blocked and the photodiode (D ₁₂ ) is turned off. In the preferred embodiment, the microprocessor is a CO
M420L was used.

A temperature detection circuit (151) that detects the temperature of the oil press cylinder (117) of the oil press bridges the resistance (R ₁ , R ₂ , R ₃ ) and the thermistor (Th ₁ ) with negative temperature characteristics and compares the output. For I
The input of C (IC ₂ ) is connected and the output of this IC (IC ₂ ) is connected to pin 6 of the microprocessor (153). The thermistor (Th ₁ ) is The oil squeezing cylinder (117) is installed in the oil squeezer so that a groove is formed and inserted into the groove. Therefore, when the temperature of the oil squeeze cylinder (117) of the oil squeezer rises to the set proper temperature, the output of the comparison IC (IC ₂ ) outputs a low level, that is, 0 (hereinafter, the low level is 0). , Below the set temperature, a high level, that is, 1 (hereinafter, the high level is 1) is output.

Heating circuit (15) for heating the oil pressing cylinder (117)
2) The triac is connected to the heater (Hi), the gate of this triac (TRIAC ₁ ) is connected to the direct current (VDD) through the transistor (Q ₁ ) and the resistor (R ₉ ), and the gate of the above transistor (Q ₁ ) is connected. base is configured to be connected to the 14 pin of the microprocessor (153) via a resistor (R _'9), the heater (Hi) is wound around the outer peripheral edge of the oil mill instrument crush cylinder (117) There is. Therefore one of the microprocessors (153)
Triac (TRIAC ₁ ) depending on the signal appearing on pin 4
The trigger of is controlled.

The motor power supply switching circuit (154) for switching the power supply of the motor (M) has a triac (TRIAC ₂ ) connected to the power supply line of the motor (M), and its gate is through a transistor (Q ₄ ) and a resistor (R ₂₀ ). The transistor (Q
The base of ₄ ) is configured to be connected to the pin 15 of the microprocessor (153) through a resistor (R ₁₉ ), and the signal output to the pin 15 of the microprocessor (153) causes the base of the triac (TRIAC _2). ) To control the trigger.

In addition, 100V / 220V power supply is used so that the oil pump can be used
Power supply voltage detection circuit for detecting 220V power supply voltage (15
8), a trigger synchronization circuit (159) for triggering the heating circuit (152) at the zero close point, and a motor (M)
Tap switching circuit for switching 100V / 220V taps (1
55) is provided.

The power supply voltage detection circuit (158) is a constant voltage generation circuit (CVC)
Connect the resistors (R ₁₁ , R ₁₈ ) to the input side power supply (VA) and ground them, and connect the resistors (R ₁₂ , R ₁₄ ) to the DC constant voltage (VDD) on the output side of the constant voltage generator (CVC). Connect and ground, connect the connection points of the resistors (R ₁₁ , R ₁₈ ) and resistors (R ₁₂ , R ₁₄ ) to the input side of the comparison IC (IC ₃ ), and then connect this IC (IC ₃ ) The output of is configured to connect to pin 23 of the microprocessor (153). The DC voltage (VDD) is constant when the power supply voltage is 100V and 220V. On the other hand, the DC voltage (VA) is about twice as high as that at 100V when the power supply voltage is 220V. Therefore, the resistors (R ₁₁ , R ₁₂ , R ₁₈ , R
Depending on the setting of ₁₄ ), the comparison IC (IC ₃ ) at 220V power supply
The output of becomes 1 but becomes 0 at 100V.

In the trigger synchronization circuit (159), a transistor (Q) is connected between pin 24 of the microprocessor (153) and ground.
₂ ) is connected and its base is configured to be connected to the power supply through a capacitor (C ₁ ) and a resistor (R ₂₁ ), which will apply a synchronization signal to the microprocessor every cycle of the power supply. The tap switching circuit (155) is one of the relays (Ry) for switching between the 100V power tap (connected to the B contact of the relay) and the 220V power tap (connected to the A contact of the relay) of the motor (M). the power terminal (BB) to the side, the microprocessor through the base resistance of the transistor (Q ₃₎ with respectively coupled to ground (R ₂₂₎ via transistors on the other side _{(CC) (Q 3) (} 153) It is configured to connect to the 17th pin of.

An overcurrent detection circuit (157) is connected to detect an overcurrent of the motor (M) when there is an abnormality in the oil expeller, which detects the induced current in the power supply line of the motor (M). Detection coil (L ₁ ) and diode (R ₁₀ )
And a capacitor (C ₃ ) are connected to form a closed circuit, and a resistor (R ₁₇ ) connected in parallel with the capacitor (C ₃ ) and another resistor (R ₁₅ , R ₁₆ , R ₁₇ ) are bridged and Connect the output to the input of the comparison IC (IC ₄ )
The output of C ₄ ) is configured to be connected to pin 22 of the microprocessor (153), and when an overcurrent occurs in the motor (M), the current corresponding to the overcurrent is detected by the induction coil (L ₁ ). , which IC (IC ₄₎ to be charged to the capacitor (C ₃₎ through the diode (R ₁₀₎ is adapted to generate an output of 1.

And a display circuit (160) for displaying various oil squeezing states of the oil squeezer is connected, and a 100V power supply indicator is an LED (D ₄ ) connected to pin 12 and a 220V power indicator is connected to pin 13 L
ED (D ₅ ) with preheat indication LED (D ₆ ) connected to pin 28
The operation indicator is the LED (D ₇ ) connected to pin 27, the standby indicator is the LED (D ₈ ) connected to pin 26, and the error confirmation indicator is 2
It is configured so that each LED (D ₉ ) connected to pin 5 is used.

Further, between the temperature detection circuit (151) and the motor power supply switching circuit (154), a resistor (R ₁₀ ) and a diode (D ₁₀ ) are provided for keeping the preheating temperature higher than the proper set temperature only during the start of oil extraction. _The preheating temperature rise circuit (161) formed in ₂₀ ) is connected.

Furthermore, a detection circuit (156) is connected to detect whether the oil can (113) and the oil cake can (114) are inserted. This is between the magnetic switch (MSW) pin 21 and ground. The magnetic switch is turned off when the oil can (113) and the oil cake can (114) are inserted and attached.

In addition to the above, (164) is a known constant voltage circuit, (162) is a circuit for supplying a predetermined pulse to the microprocessor (153) by a pulse generator, and (163) is the microprocessor (1
The reset circuit of (53), (111) is a worm, (112) is a worm gear, (119) is a transfer screw, (115) is an oil outlet, and (116) is an oil cake discharge port.

The operation of the control device for an oil squeeze machine according to the present invention having the above-described structure will be described in detail with reference to FIGS. 1, 2, and 3.

When the power switch is turned on, the microprocessor (15
3) is activated and pre-created by a microprocessor (15
3) The program built into the microprocessor (1
53) memorizes the mode 3 and outputs 0 to the 26th pin to activate the LED (D ₈ ) of the display circuit (160) to display the standby state. After that, check if the output of the power supply voltage detection circuit (158) is 1 through pin 23, and if it is 1 (in case of 220V), output 1 for pin 13 and pin 17 respectively and display it. 220V power is displayed by turning on the LED (D ₄ ) of the circuit (160) and the transistor (Q ₃ ) of the tap switching circuit (115), and at the same time, the tap of the motor (M) is switched to the tap for 220V power. To be However, when it is confirmed that 1 is not input to the 23rd pin (in case of 100V), the 1st and 0th outputs are generated to the 12th pin and the 17th pin, respectively, and the 100V power source is displayed and the tap switching circuit (155 The transistor (Q ₃ ) in) turns off and the tap for the motor (M) is connected to the 100V power tap.

After that, check if the input status of pin 21 is 1 (if the oil can and the oil cake can are inserted, the magnetic switch (MSW) will be turned off and the status will be 1).
If not, after mode 3 is memorized, output of 0 is generated on pin 17 and the tap is restored to the tap for 100V power supply.
Continue to operate the LED (D ₈ ) (standby status display element) and restart 2
Returning to the process of confirming the pin 3, the above process is repeated until the output of the pin 21 becomes 1 after the oil can (113) and the oil cake can (114) are attached.

After that, when the output of pin 21 becomes 1, mode 3 is stored in the program, so mode 3 is selected.
The microprocessor (153) operates in mode (Fig. 3B).

In the process of mode 3, first, it is confirmed whether the input of pin 5 is 1. At this time, if sesame is put into the inlet (121), the photodiode (D ₁₂ ) is turned off as described above, so the output of the comparison IC (IC ₁ ) is 0, and if sesame is not put, the photodiode is When turned on, the comparison IC (I
The output of C ₁ ) becomes 1. Therefore, the sesame seed
If not added to 1), the process up to this point is repeated until sesame is added, that is, until the input of pin 5 becomes zero. Sesame is added and the input on pin 5 is 0
Then, the mode 1 is stored in the program instead of the mode 3, and 0 is output to the 28th pin and at the same time, 1 is output to the 26th pin and the LED (D ₆ ) indicating the preheat state is activated instead. After that, the confirmation process of the 23rd and 21st pins is repeated again to select the mode 1 (since the mode 1 is stored immediately before).

In mode 1 (Fig. 3C), check again whether the input on pin 5 is 1, and if it is not 1 (if it is 1, repeat the above case) check whether the input on pin 6 is 1. [The oil cylinder (117) has not been preheated yet, so the resistance value of the thermistor (Th ₁ ) is large at this time.
The output of C (IC ₂ ) is 1 and the input of pin 6 is also 1]
If it is 1, jump to the heating process of the heater (Hi) through the route displayed on the TRC in mode 2 through the TRC (Fig. 3D). After that, check if the input of pin 23 is 1 [1 if the power supply voltage is 220V, as described above, 10
If it is 0V, the output of the IC (IC ₃ ) is 0]. If it is confirmed to be 1, the TRIAC (TRIAC ₁ ) of the heating circuit (152) will be only 1 cycle for every 5 cycles of the power frequency.
It is divided into 1/5 by pin 14 so that the TRIAC (TRIAC ₁ ) is triggered at the zero cross point by generating a pulse output synchronized by the trigger synchronization circuit (159). Oil press cylinder (11
Preheat 7) and if 0 is confirmed, the triac (TRIAC ₁ ) will be triggered in the entire cycle of the power supply frequency (at this time also at the zero-close point) a pulse signal that is not divided to pin 14 And such a process is repeated until the completion of preheating.

When preheating is completed, the resistance value of the thermistor (Th ₁ ) of the temperature detection circuit (151) drops below a predetermined value, so the IC (IC ₂ ) is inverted and an output of 0 is generated. Input to the microprocessor (15
3) stores the mode 2 and at the same time outputs the 1 and 0 signals to the 28th and 27th pins to display the operating state.
While the LED (D ₇ ) is operating, but the output of pin 15 is 0 when it is not operating (that is, not yet oiled), the diode (D ₂₀ ) of the preheat rising circuit (161)
Is connected, the resistance (R ₃ ) of the temperature detection circuit (151) and the resistance (R ₁₀ ) of the preheating temperature rise circuit (161) are connected in parallel, which lowers the reference level of the IC (IC ₂ ). Until the temperature becomes higher and the resistance of the thermistor (Th ₁ ) becomes lower, the IC (IC ₂ ) will not be reversed, and the pre-heating of the oil compression cylinder (117) to a temperature higher than the appropriate temperature during preheating. This results in lowering the viscosity of the partially oiled oil at the start of oil pressing, and better prevents overloading during starting of the motor (M). However, as soon as the motor (M) is activated, the diode (D ₂₀ ) is cut off (since pin 15 is in the 1 state at this time), the temperature of the oil pressing cylinder (117) returns to the set proper temperature during oil pressing. It will be.

Then, returning to KA in FIG. 3A again, mode 2 is selected (because mode 2 is stored in the immediately preceding process), and in the process of mode 2, first, the abnormal state is detected through the overcurrent detection circuit (157). However, in order to check if there is an overcurrent flowing to the motor (M), input of pin 22 is 1
If it is 1 and it is certainly an abnormal state, the LED element (D ₉ ) will be lit up and it will be displayed, and it is not an abnormal state and the input of pin 22 is If not 1, output 1 to pin 15 and operate the motor (M).

Then, after checking the presence of sesame in the inlet (121), the timer is set to zero, and then the temperature detection circuit (151) is used to check again whether the temperature of the oil pressing cylinder (117) is lower than the proper temperature. If it has fallen, the heating circuit (152) is activated again and the proper temperature is constantly maintained. If an abnormality occurs during oil extraction and an overcurrent flows through the motor (M), the output of the overcurrent detection circuit (157) is output. Confirm the input status of the connected 22nd pin and stop the motor (M)
Activate LDE (D ₉ ) and display to confirm the occurrence of an abnormal condition. When sesame is exhausted from the input port (121) while continuing this process, 1 is output to pin 5 by the input detection circuit (150) until the microprocessor confirms this and 20 seconds have passed. [This is the time required from when there is no sesame in the input port until when the sesame in the oil pressing cylinder (117) is completely oiled and the oil cake is discharged. This time can be adjusted appropriately.] If 20 seconds have passed after repeating the process, the motor (M) is stopped and the LED (D ₈ ) indicating the standby state is activated to indicate that the standby state is in progress, and the mode is stored and the next oil extraction is performed. In preparation for this, or manually shut off the power to stop the operation of the oil expeller.

EFFECTS OF THE INVENTION As described above, the control device of the oil expeller according to the present invention is turned on, puts the sesame to be oiled into the hopper, and puts the sesame into the input port (121) of the oil can (113) and the oil cake can (114). )
When installed, the microprocessor (153) has a built-in program to check these conditions, and the temperature detection circuit (151) checks the preliminary temperature of the oil-pressurizing cylinder (117) to generate an operation signal to the heating circuit (152). When the proper temperature is reached, the motor (M) power supply switching circuit (154) is activated to rotate the motor and the oil extraction starts. During the oil extraction, the temperature of the oil extraction cylinder (117) is set as appropriate for oil extraction through the temperature detection circuit (151). It is constantly maintained at an appropriate temperature while checking whether it is the specified temperature, and when the sesame input port is completed, it is detected and the sesame in the oil compression cylinder (117) is completely oiled and the oil cake is discharged. The motor (M) and heater (Hi) operations are automatically stopped after waiting until the temperature rises. Therefore, sesame is always squeezed at the optimum temperature condition whether the oil is being squeezed or is being squeezed, resulting in a high squeezing rate and not only high quality sesame oil but also insufficient preheating and heating. This prevents the motor (M) from being burned or the inlet will not close due to the stop of the motor (M), and the motor and the heater will automatically stop operating after the oil has been squeezed, thus preventing the waste of electric power. .

Moreover, the present invention is equipped with a power supply voltage detection circuit (158), a trigger synchronization signal (159), and a motor tap switching circuit (155), and detects this power supply voltage automatically when it is also used as a 100V / 200V power supply. Not only activates the heating circuit (152) by switching on the tap of the motor and making the power consumption of the heater (Hi) almost the same, at 220V, energizing only the 1/5 section [220V When the voltage is applied to the same load (resistor), the power consumption is (2.2) ² = 4.84, about 5 times compared to when the 100V power supply voltage is applied], and the heating circuit (by the synchronization signal of the trigger synchronization circuit (159) ( 152) can be used not only as a 100V / 220V power source without the need for a separate power supply device to trigger at the zero-close point, but the trigger can also be performed accurately and easily.

In addition, the present invention relates to an oil cylinder (11
There is no risk of overcurrent due to overload flowing to the motor because it preheats 7) sufficiently, but to make it even more complete, an overcurrent detection circuit (157) is provided to prevent overcurrent from flowing during something. However, since the power of the motor (M) is immediately cut off, it is possible to almost completely prevent a failure such as a burnout of the motor.

Further, since the oil squeezing state of the oil squeezing machine is displayed by the display circuit (160), the handling of the oil squeezing machine is extremely easy, and appropriate measures can be taken immediately in the event of an abnormality. Further, since the preheating rising circuit (161) is provided, the preheating temperature can be set higher than the temperature during oil extraction during preheating, which can prevent the motor (M) from starting smoothly and prevent an overload from being applied during starting. it can.

Further, in the control device of the oil expeller of the present invention, when the power is turned on, the control circuits of the oil expeller are automatically operated by the program of the microprocessor (153), so that it is necessary to install and operate any other switch besides the power switch. There are excellent effects such as no

Although the present invention has been described in detail with reference to one preferred embodiment of the present invention, some detailed changes and modifications may be made without departing from the scope of the technical idea appearing in the claims of the present invention. It is possible. For example, in the present invention, a thermistor having a negative characteristic is used in the temperature detecting means, but this may be replaced with a thermistor having a positive characteristic, and the microprocessor program may be modified so as to correspond to the thermistor, or the thermistor may be used for comparison.
The same function can be achieved by slightly modifying the connection of the reference level means of the IC, and if the logic state of the signal input to or output from each pin terminal of the microprocessor is different Of course, the same function can be performed by changing the program of the microprocessor.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a state in which a control device for an oil expeller according to one embodiment of the present invention is connected to the oil expeller, with a part thereof being cut away, and FIG. 2 is a circuit for one embodiment of the control device for the oil expeller according to the present invention. FIG. 3 and FIG. 3 are flowcharts showing the control process by the control device for the oil expeller according to the present invention. 1-28: Pin number of microprocessor, 117: Oiling cylinder, 121: Input port, 150: Input detection circuit, 151: Temperature detection circuit, 152: Heating circuit, 153: Microprocessor, 154: Motor power switching circuit, 155: Tap switching circuit, 156: Oil can and oil lees can insertion detection circuit, 157: Overcurrent detection circuit, 158: Power supply voltage detection circuit, 159: Trigger synchronization circuit, 160: Display circuit, 161: Preheating temperature rise circuit, Hi : heater, R ₁ to R _27: the resistance, C ₁ -C _7: condenser, IC ₁ ~IC _4: comparative IC, Q ₁ ~ _4: transistor, tRIAC _1, tRIAC _2: triac, D ₄ to D _9: D ₁₁ : LED, D ₁₂ : Photodiode, D ₁ , D ₂ , D ₁₀ , D ₂₀ : Diode, RY: Relay, Th ₁ : Thermistor, L ₁ : Coil.

Claims (7)

[Claims] 1. An input detecting means provided in an input port of an oil to be expressed such as sesame in an oil pressing device, and detecting means for detecting the presence or absence of the oil to be input in the input port; It comprises a temperature detecting means for detecting the temperature of the oil pressing cylinder, a heating means provided in the oil pressing cylinder for heating the oil pressing cylinder, and a microprocessor connected to each of the above means. The output of the means and the temperature detection means is processed, and when the oil to be squeezed exists in the inlet, the heating means is operated to heat the oil squeeze cylinder, and the temperature detection means detects that the oil has been heated to the set temperature. When this occurs, the motor power switching means of the oil pressing cylinder is turned on, the temperature of the oil pressing cylinder is maintained within a predetermined range, and the charging detection is performed. After the means stops detecting the presence of the oil to be squeezed, the motor power source switching means and the heating means are turned off after a lapse of the time required for squeezing the oil and discharging the lees. Control device for oil press. 2. The LE detection means installs an LED (D ₁₁ ) and a photodiode (D ₁₂ ) in an inlet (121),
A series circuit consisting of D (D ₁₁ ) and a resistor (R ₅ ) and a resistor (R ₆ ,
R ₇ and R ₈ ) and the photodiode (D ₁₂ ) are connected to a bridge circuit, and the output of the bridge circuit is connected to a microprocessor through an IC (IC ₁ ). Built-in thermistor (T
h ₁₎ and a resistor _{(R 1, R 2, R} 3) according to claim 1, characterized in that it is configured to connect to the microprocessor via the IC its output bridge connection (IC ₂₎ Oil extractor control device. 3. A power supply voltage detection circuit (15) for detecting a power supply voltage.
8), a trigger synchronization circuit (159) for triggering and operating the above heating means at a zero-close point, and a tap switching circuit (155) for operating a motor tap. The control device for the oil squeezer according to claim 1 or 2. 4. The power supply voltage detection circuit (158) includes a direct current constant voltage source (VDD) and a direct current voltage (VA) which fluctuates in response to fluctuations in the power supply voltage as a resistance (R ₁₂ , R ₁₄ ) and a resistance (R). ₁₁ and R ₁₃ ), and the output is connected to the microprocessor (153) through the IC (IC ₃ ), and the trigger synchronization circuit (159) uses a resistor (R ₂₁ ) and a capacitor as the power supply. (C ₁₎ through transistor the transistor (Q ₂₎ connected to the base of (Q ₂₎ is configured to connect between the ground and a microprocessor (153), said tap changer circuit (155) is a relay (Ry ) and control of oil extraction as claimed in claim 3, characterized by being configured to be connected to the microprocessor (153) via a transistor (Q ₃₎ by connecting a resistor to the base (R ₂₂₎ between the ground apparatus. 5. An overcurrent detection unit (L ₁ , D ₁₀ , C ₃ , R ₁₇ ) for detecting an overcurrent of a motor (M) and resistors (R ₁₅ , R ₁₆ ,
A motor overcurrent detection circuit (157) configured to connect R ₁₈ ) by a bridge circuit and connect its output to a microprocessor (153) through an IC (IC ₄ ). 4. The control device for the oil extractor according to item 4. 6. The bridge circuit (R ₁ ,
6. The oil expeller according to claim 5, further comprising a preheating temperature raising circuit (161) between the output side of R ₂ , R ₃ and Th ₁ ) and the input side of the motor power supply switching means. Control device. 7. A power supply voltage display circuit (D ₄ , D ₅ ) and a preheat display circuit (R ₂₃ , D ₆ ), an operation display circuit (R ₂₄ , D ₇ ), a standby display circuit (R ₂₅ , D ₈ ), and The display circuit (160) comprising an abnormality confirmation display circuit (R ₂₈ , D ₉ ) is configured to be additionally connected to the microprocessor (153).
The control device for the oil extractor according to.