KR200288975Y1 - Heating appliance for dipping wax - Google Patents

Abstract

The present invention relates to a physical heating device for wax dipping, which is a kind of dental instrument, comprising: a temperature sensor unit for sensing a current temperature of the heating port and transmitting a predetermined output signal value obtained therefrom to a temperature control unit; An input unit formed on the display unit to switch between a current temperature and a set temperature, input a set temperature, switch between a celsius and fahrenheit temperature, and raise and lower a set temperature; A temperature control unit for controlling a corresponding module to determine whether the heating port is heated by controlling a heater unit after comparing a current temperature value of the heating port input from the temperature sensor unit with a set temperature value input from the input unit; A heater unit providing heat to a heating port corresponding to an optimum melting temperature of wax; An output unit formed on the display unit to display a set temperature and a present temperature display, a heater operation display, a celsius and fahrenheit temperature display, a set temperature and a present temperature value; Provides a constant voltage of DC 5V to cut off the AC voltage to supply a power supply for activating each module; configured to be made, so that the width of the temperature deviation according to the user's input voltage change as narrow as possible and the temperature By expanding the variable range of the range, stable power supply and accurate temperature setting have the effect of high demand in other medical industries.

Description

Physical heating device for wax dipping {Heating appliance for dipping wax}

The present invention relates to a physical heating device for wax dipping, which is a kind of dental instrument. More specifically, the dental wax is melted at a temperature set by a user without changing the original properties of the wax, and then thinly coated on the outside of the denture plaster plate. The present invention relates to a physical heating device for wax dipping that removes a gypsum bone and inserts a denture material therein, thereby creating a film of wax on the surface of the material to help produce precise pores.

At the present time, the interest in national health is increasing and the average life expectancy of human beings is increasing. Various businesses in the medical industry are actively progressing, and many medical high-tech devices are being developed and produced.

However, some medical devices rely solely on foreign imports, and one out of five imported medical devices that are currently distributed and used in bulk are from the Korea Medical Device Association, the Korea Medical Equipment Cooperative Association, and the Korean Dental Equipment Association. It is an unauthorized illegal device that has not undergone safety tests.

Most of the unlicensed medical devices may have a fatal effect on the human body if they are used incorrectly or are defective, so that the reliability of the device is poor and the function does not satisfy the satisfaction of the consumer.

Basically, the dental wax used to make dentures is a composite material containing several kinds of molecules and is composed of natural waxes and synthetic waxes, rubber, fats, fatty acids, oils, natural resins, and pigments.

The dental waxes include inlay pattern wax, casting wax, resin modeling materials, base plate wax, boxing wax, and multipurpose waxes. utility wax, sticky wax, corrective impression wax, bite registration wax, and the like.

Since dental wax is a composite material containing several kinds of molecules as described above, the thermal expansion coefficient, fluidity, residual stress, etc., including melting temperature ranges are all different according to their kind. Even though the thermal expansion coefficient may be different according to each temperature range, there is a big difference in mechanical properties depending on the temperature at the time of measurement.

The conventional physical heating device can simply designate the set temperature and cannot know the current temperature in the heating port, and it is required to maintain the proper melting temperature for each wax. Due to the wide width of the temperature deviation, it is very sensitive to changes in the melting temperature and often loses the wax-specific properties due to the minute temperature difference.

Therefore, the speed of dissolving the wax is slowed down and the physical properties of the wax are changed, which makes it impossible to produce precise pores. Also, since only one of the Celsius / Fahrenheit temperature is used, the consumer's customer According to the situation, problems such as conversion to Celsius / Fahrenheit are required.

The present invention was devised to solve the above-mentioned conventional problems, and puts a certain amount of wax into the heating port, and the present temperature and the set temperature are output so that the user can melt without changing the physical properties at the optimum melting temperature of the set wax. By making it possible to work while comparing the set temperature and the present temperature, it is possible to narrow the width of the temperature deviation according to the user's input voltage change as much as possible, and to increase the variable width of the temperature range to produce precise pores Its purpose is to make it possible.

A heating port for receiving wax and heating to an optimum melting temperature to achieve the above object; A cover for preventing the inflow of foreign matter into the heating port; In the configuration of the physical heating device for wax dipping comprising a display unit for displaying the current temperature and the operating state in the heating port, the current temperature of the heating port is detected and the predetermined output signal value obtained therefrom is transmitted to the temperature control unit A temperature sensor unit; An input unit which is connected to a temperature control unit in a form of a key or a button so as to change the current temperature and the set temperature, input the set temperature, switch the Celsius and Fahrenheit temperature, and raise and lower the set temperature; After comparing the present temperature value of the heating port input from the temperature sensor unit with the set temperature value input from the input unit, the heater unit is controlled to determine whether the heating port is heated, and the wax contained in the heating port is optimally melted. A temperature control unit controlling the module to be melted into the furnace; A heater unit configured to receive a control signal of the temperature controller to provide heat corresponding to an optimum melting temperature of wax to a heating port; An output unit formed in the display unit so as to display a set temperature and a present temperature display, a heater operation display, a celsius temperature and a fahrenheit temperature display, and a circuit connected to a temperature controller; Wax dipping material heating device comprising a power supply unit for supplying power to activate each module by providing a voltage of DC 5V through a voltage regulator through a voltage regulator to cut the AC voltage voltage through a bridge diode and a capacitor It was intended to be implemented.

1 is a perspective view of a physical heating device constructed by one embodiment of the present invention

2 is a block diagram of a physical heating device constructed by one embodiment of the present invention

3 is a circuit diagram of a physical heating device constructed by one embodiment of the present invention

4 is a flowchart illustrating a process of operating a physical property heating device according to the present invention.

* Description of Signs of Main Parts of Drawings *

1. Property heating equipment 10. Temperature sensor

20. Input section 30. Temperature control section

40. Heater unit 50. Output unit

60. Power Supply

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings, the accompanying drawings are only examples to specifically describe an embodiment of the present invention, the scope of the present invention is limited by the description with reference to the drawings or drawings It is not limited.

1 is a perspective view of a physical property heating device constructed by one embodiment of the present invention, Figure 2 is a block diagram of a physical property heating device configured by one embodiment of the present invention, Figure 3 by one embodiment of the present invention 4 is a circuit diagram of a physical property heating device, and FIG. 4 is a flowchart illustrating a process in which the present invention is operated. In FIG. 1, reference numeral 2 is a heating port, 3 is a cover, and 21 is a set temperature / current temperature change. Key, 22 is Celsius / Fahrenheit conversion key, 23 is set temperature up key, 24 is set temperature down key, 51 is set temperature display part, 52 is current temperature display part, 53 is heater operation display part, 54 is temperature value display part .

1 is a perspective view of a physical heating device configured by one embodiment of the present invention, as shown in the present invention is heated by using the cover 3 so that foreign matter does not enter the heating port (2) during storage The upper part of the port (2) can be covered, and on the front side, the FND can be used to output the present temperature and the set temperature according to Celsius and Fahrenheit in a form that can be recognized by the user. The current temperature display unit 52 and the set temperature display unit 51 are displayed on the display panel, the corresponding temperature is displayed on the FND by the Celsius / Fahrenheit conversion key 22, and the user can easily specify the set temperature. The set temperature rising key 23 and the falling key 24 are formed so that the heater operation indicator 53 can be displayed according to the operation of the heater.

2 and 3 show a block diagram and a circuit diagram of the physical heating device (1) configured by one embodiment of the present invention, as shown, the physical heating device for wax dipping (1) detects the current temperature from the temperature sensor It consists of a temperature sensor unit 10, a set temperature / current temperature switch key 21 and the Celsius / Fahrenheit switch key 22, a set temperature rising key (23) and the down key (24) can be waxed directly by the user Compared to the input unit 20, the current temperature detected by the temperature sensor unit 10 and the set temperature input from the input unit 20 that can input the set temperature according to the melting temperature of the set temperature is greater than the current temperature When the heater is large and the current temperature is greater than or equal to the set temperature, the temperature control unit 30 for controlling the heater to turn off, the heater unit 40 to determine whether the heater operation from the temperature control unit 30 to drive the heater (40) ), The set temperature display section 51 and the current The output unit 50 is composed of a temperature display unit 52, a heater operation display unit 53 and a temperature value display unit 54 to display a state according to the input of the input unit 20 so that the user can easily recognize the device, the device It consists of a power supply unit 60 for supplying power to the field.

The temperature sensor unit 10 obtains an output signal by detecting internal and external current temperatures from a temperature sensor, amplifies the signal through an operational amplifier (OP AMP), and outputs the amplified final output to the temperature controller. It is a place to play a role.

The LM35A temperature sensor can be used to perform the above role, and it can detect a wide range of temperature from as low as 0 ℃ to as high as 150 ℃. From this, when the temperature increases / decreases by 1 ℃, the output increases by 10mV / In order to reduce the output signal, the output signal is set to 10mV / ℃ so that the output of 0V to 1.5V can be obtained for the temperature of 0 ℃ to 150 ℃.

However, since the output signal of about 0V to 1.5V through the temperature sensor is weak and not suitable for use, it can be amplified using OP-AMP, and the negative gain caused by the inverting amplifier generally used (phase In order to avoid the reversal of, the final output after amplifying the output by 10mV / ℃ to 3.4 times (1 + 2.4) using a non-inverting amplifier that can be supplied to the non-inverting terminal of the OP-AMP To get.

From the final output V = (0 ℃ × 10mV) × 3.4, the lowest 0V to the highest 5V can be obtained. If the temperature is below 0 ℃, 0V can be finally output through the non-inverting OP-AMP. When the final output is input to the temperature control unit 30, the temperature control unit 30 receives the final output value of 0V to 5V. When OV is ON, it is connected to OFF when 5V.

The input unit 20 is a device composed of a set temperature / current temperature switch key 21 and a Celsius / Fahrenheit switch key 22, a set temperature rise key 23, and a set temperature fall key 24. It is configured to directly input the set temperature according to the optimum melting temperature of the wax.

The temperature controller 30 activates the set temperature display unit 51 and the present temperature display unit 52 by the set temperature / present temperature switching key 21 of the input unit 20 using a microprocessor, and inputs the input unit 20. Compared to the set temperature value input by the user and the current temperature sensor value detected from the temperature sensor unit 10, if the set temperature is greater than the present temperature, the heater operation display unit 53 is turned on, and the present temperature is the set temperature If greater than or equal to the control unit to turn off the heater operation display unit 53, the heater unit 40 is turned on / off according to the result to finally determine whether the heater operation to melt the wax.

The microprocessor is mainly an 8-bit CMOS one-chip microprocessor PIC16C711, each pin configuration is as follows.

Of the pin terminals of the one-chip microprocessor PIC16C711, RA0 to RA4 are bidirectional I / O (0 bits) of port A to bidirectional I / O (4 bits) of port A, and a transistor-transistor logic circuit (TTL) level and RB0 to RB7 are bidirectional I / O ports (0 bits) to Port B bidirectional I / O ports (7 bits), and OCS1 / CLKIN and OCS2 / CLKOUT are oscillator (oscillator) terminals, respectively. It is in charge of clock output, VDD is power terminal, VSS terminal is ground, MCLR is used for reset.

RA0 is used as an A / D converter (analog / digital converter) for converting an analog output value of 0V to 5V received from the temperature sensor unit 10 into a digital value.

RA2 and RA3 are designed to memorize the previous state even when the power is turned off when connected to the memory. 24C04 EEPROM is mainly used as the memory. By changing the electric charge of the elements constituting the chip, the data can be written and erased.

The heater unit 40 is a device for receiving a ON / OFF signal from the temperature control unit 30 to control the triac (Triac) to turn the heater ON / OFF, the triac element is a two thyristor having a PNPN structure Because the gate electrodes are common, bidirectional driving devices connected in parallel and in parallel can be driven in two directions. Thus, the blocking voltage characteristic has two operation modes, a surface blocking voltage mode and a back blocking voltage mode, and are mainly used as an AC switch.

The triac driver is turned on / off with an ON signal of 0 V and an OFF signal of +5 V received from the temperature control part 30, and the triac is turned on / off by the on / off of the triac driver. When it is turned on, the heater will run, and when it is off, it will not run.

When operating the heater, AC 110V / 220V power is applied to both ends of the heater as it is, and the triac driver's driving current IFT uses 270Ω for maximum 15mA. 39Ω and 0.01Ω are also devices that can be used to prevent sudden ON / OFF.

The output unit 50 includes a set temperature display unit 51, a current temperature display unit 52, a heater operation display unit 53, a Celsius / Fahrenheit display unit, and a temperature value display unit 54, according to the input of the input unit 20. It is a device for controlling the state through the temperature control unit 30 to display the user can easily recognize.

When the input unit 20 operates each key to transmit an input signal to the temperature controller 30, the received data is output from the microprocessors RB0 to RB6 pins on the temperature controller 30 to serve as an address decoder. In this case, 74LS139 and HEF4511 are preferably used as the address decoder.

The 2-bit signals output from the microprocessor of the temperature controller 30 are converted into 4-bit signals through the address decoder element 74LS139, so that the set temperature display unit 51 of the output unit 50 and the present temperature display unit ( 52), after determining whether to receive the heater operation display unit 53, the Celsius / Fahrenheit display unit, and the temperature value display unit 54, select respective keys, and the data signals converted to the 4-bits are converted into the address decoder HEF4511. Decimalized through, the temperature value is displayed on the display unit 54 in the state that can be finally recognized by the user.

The temperature value display section 54 is frequently used for numbers or simple symbolic representations, and a FND called 7 segments is commonly used. It is mainly classified into common anode and common cathode according to where Commom point is located. As described above, it is most convenient and common to control using 74LS139. The control of the output unit 50 may be controlled by directly connecting 8 bits when the CPU port is free, but various problems may occur such as noise or afterimage left in the direct I / O port control.

Therefore, the control using 74LS139 is more stable and the circuit is also simpler to enable preferred control. And when controlling multiple output units 74LS139 is connected to each output unit 50, and by controlling the common terminal of the output by sequentially turning on at a speed of 2ms once each time as if all the output unit 50 in the eyes of the user Designed to be used to create a illusion that it's on. In addition, the output unit 50 configures a buzzer connected to the RB6 pin of the temperature controller 30 so that a predetermined sound can be generated when the user selects and inputs a key.

The power supply unit 60 cuts off the AC power to supply power to the devices so that the operation can be performed, and then the voltage regulator rectifies the full-wave rectified voltage through a bridge diode and a capacitor. It is a device that makes DC 5V constant voltage through regulator.The voltage of AC 110V / 220V is reduced to AC 8V through step-down transformer and then the voltage is smoothed by bridge diode and electrolytic capacitor. V (= 8 V × ) The DC 11.2V voltage smoothed by the bridge diode and the condenser is once again smoothed by the electrolytic capacitor via the voltage regulator 7805 to DC 5V (= 8V / To produce a constant voltage.

The voltage regulator, also called a voltage regulator, is designed to maintain a constant output voltage at all times even when the input voltage and the output load change, and it is common to use an integrated circuit to improve reliability and simplify the voltage control circuit. The above-described constant voltage of DC 5V can be used as the main power source of this circuit.

Looking at the use and operating state of the physical heating device for wax dipping according to an embodiment of the present invention configured as described above with reference to FIG. Figure 4 shows a flow diagram of the operating state of the physical heating device for wax dipping according to the present invention.

When the DC 5V DC power is supplied through the AC 110V / 220V power supply rotor through the bridge diode, the capacitor and the voltage regulator to the wax heating material heating device, the device is ready to melt the wax at the optimum temperature. In addition, the microprocessor of the temperature controller 30 is initialized to operate normally.

The user opens the lid, adds a quantity of wax to be dissolved in the heating pot, and sets an optimum melting temperature according to the type of the wax in relation to the current temperature.

The present temperature is passed from the signal by the set temperature / present temperature switching key 21 to the address decoder 74LS139 to activate the present temperature display unit 52 (132), and the internal temperature from the temperature sensor of the temperature sensor unit 10. And after sensing the current temperature of the external to obtain an output signal of 10mV / ℃ and amplifies the final signal through the OP AMP and outputs to the temperature control unit 30. The output final signal is decoded by the address decoder HEF4511 and output 132 in a state that can be recognized by the user on the temperature value display unit 54 (130).

The set temperature is activated by the present temperature display unit 52 being selected by the address decoder 74139 by inputting a signal input by the user directly using the set temperature / current temperature switch key 21 and the Celsius / Fahrenheit switch key 22 ( 141) and then decoded by the address decode HEF4511 to output the value 142 to the temperature value display section 54 so that the user can recognize it.

At this time, the user uses the Celsius / Fahrenheit conversion key 22 to determine whether the current temperature and the set temperature in Celsius / Fahrenheit, Celsius / Fahrenheit conversion temperature is automatically calculated by the temperature sensor unit 10 By the operation of each address decoder, the temperature value display section 54 is shown to be recognized by the user, and the respective keys are connected to the buzzer by the microprocessor of the control unit so that the state of the keys can be sensed. Further, the change from the first to fourth digits of the temperature value display unit 54 and the celsius / degree Fahrenheit display unit by activation of the present temperature display unit 52, the set temperature display unit 51, and the Celsius / Fahrenheit display unit is 2.5 for each digit. It quickly switches to the full 10ms speed in ms and repeats continuously for recognizable display.

The current temperature detected by the temperature sensor unit 10 and the set temperature directly input by the user from the input unit 20 may be controlled by the microprocessor in the temperature control unit 30. That is, the set temperature value input by the user from the input unit 20 and the present temperature sensor value detected by the temperature sensor unit 10 are compared with each other (150). If the set temperature is greater than the present temperature, the heater operation display unit 53 On (160), if the current temperature is greater than or equal to the set temperature is controlled by the controller to turn off the heater operation display unit 53 (151).

As the heater operation display unit 53 is turned on / off according to the result, the heater unit 40 turns on / off the triac driver according to the 0 V ON signal and the +5 V OFF signal received from the temperature control unit 30. The triac is turned on and off by turning the triac driver on and off. Finally, when the TRIAC is turned on, the heater is operated, and when it is turned off, the heater is not operated.

When the heater operation indicator is turned on by the process as described above (160) and the heater is turned on (170), the wax can be completely melted without any change in physical properties at the optimum temperature.

If the current temperature is greater than or equal to the set temperature by comparing the set temperature with the set temperature, the heater operation display unit 53 is maintained in the OFF state as it is and the heater is not operated (151). Once again, the set temperature is compared with the present temperature 150 to repeat the cooling process until the set temperature is greater than the present temperature so as to turn on the heater.

The physical heating device of the present invention allows the temperature deviation of the user's input voltage to be narrowed as much as possible, and the set temperature range is expanded from 30 ° C to 120 ° C to increase the temperature range of the consumer. Localization of devices that have depended solely on imports and imports for buyers has the effect of import substitution, and the demand in the medical industry for stable power supply and accurate temperature setting.

Claims (3)

A heating port for receiving wax and heating to an optimum melting temperature; A cover for preventing the inflow of foreign matter into the heating port; In the configuration of the physical heating device for wax dipping consisting of; a display unit for displaying the current temperature and the operating state in the heating port, A temperature sensor unit configured to sense a current temperature of the heating port and generate a predetermined output signal and an operational amplifier configured to amplify the output signal; An input unit formed on the display unit as a Celsius / Fahrenheit switching key, a current temperature / setting temperature switching key, a setting temperature rising key, and a falling key, respectively, and connected in circuit with the temperature control unit; After comparing the present temperature output value of the heating port input from the temperature sensor unit with the set temperature output value input from the input unit, and outputs a control signal to the heater to melt the wax contained in the heating port to the optimum melting temperature A temperature control unit circuitly connected to the module; A heater unit comprising a triac driver turned on / off according to a control signal of the temperature controller and a heater generating heat in a heating port by the triac; An address decoder which receives the output signal value output from the temperature controller and outputs it to a display unit, and a heater operation display unit, a current temperature display unit, a set temperature display unit, a Celsius / Fahrenheit display unit, and a temperature which are connected to the address decoder and circuitally connected to the address decoder. An output unit configured of a value display unit; Wax dipping material heater characterized in that consisting of; a power supply unit consisting of a step-down transformer for stepping down AC voltage, a bridge diode and a capacitor and a voltage regulator for smoothing action. delete delete