KR890004373Y1 - Heater control device used for slidac - Google Patents

Abstract

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Description

Sliding Dock Magnetic Stirring Heating System

1 is an implementation circuit diagram according to the present invention.

2 is a state of use of the magnetic stirring stone heating device of the present invention.

* Explanation of symbols for main parts of the drawings

1: power switch 2: fuse

3: motor 4: variable resistor for motor speed adjustment

5: motor switch 6: condenser

7: coil 8: condenser

9: pilot lamp 10: heater switch

11: heater 12: triac

13: resistance 14: resistance

15 condenser 16 bidirectional switch element

17: outlet for connecting external heater 18: variable resistor for supply power adjustment

19: diode 20: diode

30: case 31: heating tube

32: magnet rotating body 33: power control plate

34: speed control knob 35: cooling fan

36 plug 37 voltmeter

38: external heater 39: heated object

40: iron pin

The present invention relates to a magnetic stirring heating device for a slim-dak combination, and in particular, in addition to the magnetic stirring heating function, by connecting a separate external heater to function to control the power supply of the skin heater, the equipment purchase cost of the laboratory The present invention relates to a magnetic stirring heating device for a combined slide which can reduce the energy consumption and improve the experimental efficiency.

In general, in a chemical experiment, various heating apparatuses are used for chemical reaction experiments, and in order to control the electric power supplied to this heating apparatus, expensive slide apparatus is provided. This slide unit is not only expensive but also very heavy, so it is usually inconvenient to place a separate wiring to connect a heating device and to control the power supply. It was very cumbersome to use.

Conventional magnet stirring and heating devices include a motor, a heater, a heater control circuit using a thermostat, a triac, and the like.

Therefore, when stirring the heated object using a magnetic stirring heating device and using a separate external heater as an auxiliary heater, connect the external heater with a long electric cable to the sliding device normally located in the laboratory corner, and then It is very cumbersome to use an external heater because it is necessary to subheat the object to be heated with the external heater after adjusting the Doc unit to the desired power supply and then heating the object to be heated with the external heater on the bench. In addition to the need to go through to change the power supply to adjust the slide device because the operation is inconvenient to reduce the experimental efficiency was a big cause.

Therefore, an object of the present invention is to enable the connection of a separate external heater in addition to the stirring heating function of the magnetic stirring heating device to solve the problems of the prior art as described above, and serves as a function to adjust the power supply of the external heater. The present invention is to provide a magnetic stirring heating device for the combined use of a slide that can reduce the equipment purchase cost of the laboratory.

Another object of the present invention is to provide an inexpensive, lightweight, and portable semiconductor slide device to improve the convenience of the operation to improve the experimental efficiency.

In order to achieve the above object, the present invention connects a heater and a triac in series to a commercial AC power supply, and connects a first resistor, a second resistor, and a capacitor connected in series with each other in parallel to the triac, and further includes the resistor and A conventional heater control circuit is provided in which a triac gate is connected to a common contact of a capacitor through a bidirectional switch element, wherein the heater switch connected in series to the heater, the heater and the heater switch connected in series to each other. An external heater connection outlet connected in parallel and a variable resistor for power regulation connected in series with respect to the resistor may be configured to control the power supply of the external heater to be connected.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a circuit diagram of one embodiment according to the present invention.

This is because the power switch 1, the fuse 2, the heater 11, the heater switch 10 and the triac 12 are serially connected to the AC power supply, and the heater 11 and the ter switch 10 connected in series are connected. Connect the outlet 17 for connecting the external heater to both ends of the connection, and also the pilot lamp 9 to the both ends of the above, and the variable resistor 18, resistor 13, resistor (14) for supply power regulation connected in series with each other. And the capacitor 15 are connected to both ends of the triac 12, the resistor 14 and the capacitor 15 are connected to both ends of the triac 12, and the resistor 14 and the capacitor. A gate of the triac 12 is connected to a common contact of the via 15 via a bidirectional switch element 16, a diode 19 is connected to both ends of the triac 12, and a bidirectional switch element The diode 20 is connected so that a current flows from the control terminal 16 to the cathode of the diode 19. The capacitors 6 and 8 and the coil 7 constitute an AC noise canceling circuit. In addition, the motor variable speed resistor (4) and the motor (3), the motor switch (5) is connected in series to a commercial AC power supply.

Figure 2 shows a state diagram of use of the magnetic stirring heating device applied in the present invention. The heating plate 31 is installed on the upper side of the case 30 in which the circuit of FIG. 1 is incorporated and connected, and the heater 11 is disposed on the bottom surface of the heating plate 31, and is installed in the case 30 below the center part. The magnet swivel 32 which is rotated by the motor 3 is located. The power control knob 33 and the mouth of the power switch (1), heater switch (10), motor switch (5), pilot lamp (9), variable resistor (18) for power supply adjustment are provided on the front part of case (30). A speed control knob 34 of the variable resistor 4 for controlling the speed of the rotor is installed, and an outlet 11 for connecting an external heater is installed at one side.

Reference numeral 35 is a cooling fan, 36 is a plug, 37 is a voltmeter, 38 is an external heater, 39 is a heating material, 40 is an iron pin.

The effect of the present invention configured as described above is as follows.

When the power switch 1 is turned "on", the pilot lamp 9 is turned on to indicate the power supply state. Turn the power control knob 33 of the variable resistor 18 for supply power adjustment to set the conduction angle of the triac 12 to adjust the amount of power supplied, and then turn on the heater switch 10 to turn on the heater 11. The supplied heat is generated and heat is transferred to the heated object 39 through the heating plate 31. In order to heat the heated object 39 while stirring, the motor 3 is turned on when the motor switch 5 is turned on so that the magnet rotor 32 rotates, and thus the iron pin in the heated object 39 is rotated. 40 is to be rotated by the magnetic force is because the object to be heated is stirred.

In order to use the external heater 38, when the plug 36 is connected to the external heater connection outlet 17 through the voltmeter 37 and the heater switch 10 is turned off, only the external heater 38 is supplied with power. This can be known through the guidance of the voltmeter 37. The electric power supplied varies the resistance value of the variable resistor 18 for adjusting the power supply, and if the resistance value is reduced, the charging time of the capacitor 15 is increased, and the triac 12 conducts quickly from the zero point of the commercial exchange. Therefore, the conduction angle of the triac 12 is increased to increase the power supply, and if the resistance value is increased, the charging time of the capacitor 15 is slowed down and the triac 12 is conducted since the triac 12 is conducting. The conduction angle of the vice 12 is reduced, thereby reducing the power supply. Therefore, it is possible to adjust the power supplied to the external heater 38 while turning the power adjustment knob 33 of the variable resistor 18 for supply power adjustment.

As described above, in the present invention, the magnetic stirring heating device can control the power supply of the separate external heater, so that the external heater can be connected with the slide function, so that it is possible to replace the additional expensive slide equipment. This will reduce the cost of purchasing laboratory equipment.

In addition, when the external heater is used as the auxiliary heater, the stirring heating does not require a separate wiring as in the prior art, and it is very convenient to adjust the amount of power supplied to the external heater at that time by simple operation, which greatly improves the experiment efficiency. It is a practical design that can be.

Claims (1)

The heater 11 and the triac 12 are connected in series to a commercial AC power supply, and the resistor 13, the resistor 14, and the condenser 15 connected in series with each other are connected in parallel with the triac 12. In addition, the heater 11 in which the gate of the triac 12 is connected to the common contact of the resistor 14 and the condenser 15 through the bidirectional switch element 16 is provided. Heater switch 10 connected in series with respect to the heater), the condenser 17 for external heater connection connected in parallel with the heater 11 connected with the heater switch 10, and the resistor 13 Sliding board combined magnetic stirring heating device characterized in that it is possible to control the power supply of the external heater connected by having a variable resistor (18) for supply power regulation is connected directly.