KR20100010664U - Apparatus of high frequency inductionheating to be formed a inductor of out sticking - Google Patents

Abstract

The present invention is formed by heating the heating pipe 110 is filled with the heat medium oil is laminated in a rotary screw type (110a) along the inner surface of the cylindrical pipe 100, the externally attached induction coil along the outer surface of the cylindrical pipe ( 200) is surface bonded to be wound at regular intervals, the high frequency induction heating device is connected to the induction coil is coupled to the high frequency induction heating unit is configured to convert the heating medium filled in the heating pipe into high temperature induction heating to hot water, After induction coil is surface bonded to heating pipe, direct high frequency induction heating can be used to accelerate the heat medium oil in a large amount in a short time, and high frequency induction heating can be performed by keeping the interval of induction coil constant to prevent interference phenomenon. To provide a high frequency induction heating device formed with an external induction coil to reduce heat loss. There is a purpose.

Surface Adhesion, Induction Coil, High Frequency Induction Heating Module

Description

High frequency induction heating device with an externally inductive coil formed {APPARATUS OF HIGH FREQUENCY INDUCTIONHEATING TO BE FORMED A INDUCTOR OF OUT STICKING}

The present invention relates to a high frequency induction heating apparatus formed with an externally attached induction coil used to provide heating and hot water.

In general, high-frequency induction heating is a direct current is induced by the flow of high-frequency current to the heated water surrounded by the coil (coil), and is directly heated by the heat generated according to, it is an automotive part and a mechanical part, a steel pipe or steel wire, a steel sheet or steel ingot, It is a heating means that is commonly used for forging, melting, heat treatment, heat processing, etc. by heating metals such as shipbuilding and electric parts.

The use of high-frequency induction heating is clean energy, and there is no pollution first using electricity, and high-speed semiconductors are used, so energy efficiency is high, precise temperature control, miniaturization and automation can be pursued simultaneously, and at a minimum cost. This has the advantage of heating / operating the necessary part.

In the prior art, in the Patent Publication No. 10-0539453, a diaphragm for distinguishing the first heating chamber and the second heating chamber is installed inside the rectangular main body filled with heating water, the upper portion of the diaphragm is formed to open a portion, A heating inlet pipe is formed on a bottom surface of the first heating chamber, a heating inlet pipe is formed on a side surface of the second heating chamber, and a cylindrical insulated tube having an induction coil formed therein in the first and second heating chambers; Induction heating device consisting of a cylindrical heating tube installed at a predetermined interval on the outside of the insulated tube, and is installed so as to surround the outside of the induction heating device, the cylindrical heating to generate heat in proportion to the voltage applied to the conductive material Each member is composed of a pair, and the hot water pipe flowing into the first heating chamber of the main body has a spring shape in the space between the heating tube and the heating member of the induction heating apparatus. High frequency is installed so as to surround, and installed to wrap in a spring shape in the space between the heating tube and the heating member of the induction heating device of the second heating chamber through the opening formed in the upper partition wall, and configured to flow through one side of the second heating chamber. Although a boiler device using induction heating has been proposed,

This is because the induction coil is formed inside the first and second heating chamber, the heat loss during heating through the induction coil, there is a problem that takes a long time to convert from the heat medium oil to hot water.

In order to solve the above problems, in the present invention, the high-frequency induction coil is surface bonded to the cylindrical pipe, and then directly induction high-frequency induction heating to accelerate the heat medium oil to a large capacity in a short time, and to maintain a constant interval between the induction coils It is an object of the present invention to provide a high frequency induction heating apparatus in which an externally inductive type induction coil is formed that can induction heating, thereby preventing interference and reducing heat loss.

In order to achieve the above object, the high frequency induction heating apparatus is formed with an external induction coil according to the present invention.

The heat pipe 110 filled with the heat medium oil is formed by being stacked in a rotary screw shape along the inner surface of the cylindrical pipe 100, and the externally attached induction coil 200 is surface bonded along the outer surface of the cylindrical pipe. It is formed to be wound at regular intervals, is achieved by the high frequency induction heating module 300 is connected to the externally attached induction coil is configured to convert the heating medium oil filled in the cylindrical pipe to high-frequency induction heating to hot water.

As described above, in the present invention, the high-frequency induction coil is surface bonded to the cylindrical pipe, and then directly induction high-frequency induction heating to accelerate the heat medium oil to a large capacity in a short time. It can be heated, it can reduce the heat loss by preventing interference, and it can be applied to the existing heating device and hot water device because of its good compatibility.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a high frequency induction heating apparatus formed with an externally induction coil according to the present invention, which is a heating pipe 110, an externally mounted induction coil 200, a high frequency induction heating module 300 It consists of.

First, the heating pipe 110 will be described.

The heating pipe 110 is filled with the heat medium oil flows therein, and is formed by being stacked in a rotary screw type 110a along the inner surface of the cylindrical pipe 100, and formed with an external attachment type formed around the outer surface of the cylindrical pipe. Where the induction heating by the coil to convert the heat medium oil into hot water, which is composed of an inlet 111 through which the heat medium oil is introduced in the front end, the outlet 112 for discharging the hot water is formed in the rear end.

And, the heating device such as a heating pipe and the pipe for connection to the boiler is further connected.

In the present invention, the externally attached induction coil is spaced 0.5 to 5cm apart along the outer surface of the cylindrical pipe, the space between the externally attached induction coil to form a space so that the current flows well filled inside the heating pipe The thermal oil can be instantaneously heated at high frequency.

The heating pipe according to the invention is made of aluminum.

In addition, the heating pipe 110 according to the present invention is formed in a crust structure and is laminated at a constant height, the induction coil is wound around the outer periphery of the heating pipes are laminated at a constant height formed by a regular interval 110b It consists of.

The high frequency induction heating module 300 is connected to the high-temperature induction heating the heating medium oil filled in the heating pipe is converted to hot water.

The reason why the duck heating part according to the present invention forms a duck structure and is stacked at a constant height is that induction heating is performed through an induction coil formed around the outer surface of the heating pipe while rotating and vortexing the heat medium oil flowing along the heating pipe along the duck structure. To do that.

That is, if the temperature of the heat medium oil flowing into the inlet of the heating pipe was 5 ° C., the medium oil heated induction at the same time as the rotational vortex at the middle of the heating part, and the temperature rose to 30 ° C., and the heat medium oil was rotated at the bottom of the heating part. At the same time, induction heating causes the temperature to rise to 60 ° C.

In the present invention, the calf heating part forms a calf structure and is stacked at a constant height, so that the heat medium oil has a larger capacity than the existing devices and can accelerate the temperature in a short time.

Next, the externally attached induction coil 200 according to the present invention will be described.

The externally attached induction coil 200 is surface bonded along the outer surface circumference of the cylindrical pipe is formed to be wound at regular intervals, the high frequency induction heating module is connected to one end of the heating medium oil filled in the heating pipe inside the cylindrical pipe Where is the high frequency induction heating, which consists of a high frequency induction coil.

The externally attached induction coil 200 is formed of a polyurethane coating on the induction coil to form a base layer (a).

Looking at the polyurethane coating as follows.

Polyurethane (PU) is a resin that is excellent in weather resistance and oxidation resistance because it does not contain double bonds compared to rubber-based elastomers, and has excellent mechanical strength, abrasion resistance, impact resistance, and cold resistance by urethane bonds. It has excellent properties of properties, toughness, abrasion resistance, flexibility, chemical resistance and adhesion.

The polyurethane (PU) is used as a coating material on the outer surface of the induction coil 200, and contains nanosilica to improve mechanical and thermal properties.

Nanosilica-containing coatings have a small size compared to the wavelength in the visible region (400 to 800 nm), and do not significantly affect the transparency of the composite material, and also improve weather resistance due to the shielding effect against ultraviolet rays.

The nano silica is added in the range of 3 to 10wt% with respect to the total content of the coating material, when the use is less than 3wt% urethane coating film by the use of nanosilica expected the synergistic effect of mechanical and thermal properties In case of exceeding 10 wt%, since the viscosity of the mixture is increased and fluidity is poor, coating is not easy. Therefore, the nano silica is preferably added in a range of 3 to 10 wt% based on the total content of the coating material.

Looking at the specific manufacturing of the nano-silica-containing polyurethane (PU) coating material, 4,4-methylenebis (2-chloroaniline) (4,4'-methylenebis (2-chloroaniline)) of the curing agent in 85 g of poly (propylene glycol) 6g is added and completely dissolved at 100 ° C., 2 g of dioctylphthalate is added as a viscosity modifier, and stirred at 350 rpm, and 7 g of nano silica is added thereto, followed by stirring for 2 hours.

The externally attached induction coil 200 according to the present invention is formed of a polyurethane coating to form a base layer a, thereby preventing corrosion or tearing of the induction coil due to external pressure, and surrounding the outer surface of the cylindrical pipe 100. The surface may be bonded to be wound along a predetermined interval along the.

Adhesive is applied to the outer surface of the cylindrical pipe according to the present invention.

The adhesive is a mixture of 1 ~ 99wt% epoxy resin and 1 ~ 99wt% phenol resin was mixed by dissolving 50 ~ 90wt% and 10 ~ 50wt% polyvinyl acetate mixture dissolved in methanol.

When the epoxy resin is less than 1wt%, the chemical resistance is inferior, and when it exceeds 99wt%, there is a problem of poor fluidity, so the epoxy resin is used at 1 to 99wt%.

When the phenolic resin is less than 1wt%, the chemical resistance is inferior, and when the phenolic resin is more than 99wt%, there is a problem of poor fluidity, so the phenolic resin is used at 1 to 99wt%.

In addition, a specific example of the preparation of the adhesive may be prepared by adding 50 g of epoxy resin and 50 g of phenol resin to 400 ml of methanol, followed by mixing, and adding 20 g of polyvinylacetate to 80 g of the mixture thus prepared for reaction for 6 hours at 32 ° C. do.

The externally mounted induction coil according to the present invention is surface bonded along the outer surface circumference of the heating pipe and wound around 0.5 to 5 cm with other neighboring externally attached induction coils.

Here, when the externally induction coil is less than 0.5cm, there is a problem that the high frequency induction generated in the neighboring externally attached induction coil overlap each other, causing interference, and a lot of heat loss occurs, the externally inductive coil In the case of 5 cm or more, since there is a problem in that a high frequency induction heating time is long due to the heating pipe, a lot of electrical energy is lost.

Externally attached induction coil 200 according to the present invention uses a litz wire (litz wire), the urethane coating on the appearance of the litz wire. The litz wire may be twisted with each other so as to suppress the occurrence of eddy currents in itself.

Next, the high frequency induction heating module 300 will be described.

The high frequency induction heating module 300 is connected to the externally attached induction coil to convert the heat medium oil filled in the heating pipe to high frequency induction heating through the externally attached induction coil, which is converted into hot water, which is a power supply unit 310, The rectifier 320, the temperature sensor 330, the high frequency oscillator 340, the output unit 350, and the microcomputer 360 is composed of.

The power supply unit 310 serves to supply power to each device.

It consists of a rectifier and a switching mode power supply (SMPS), and receives commercial AC power from the AC power input terminal, converts it into a corresponding DC voltage, and supplies power to each device.

The rectifier 320 rectifies a commercial AC input voltage, which is a line filter for filtering a commercial alternating current (AC) input voltage, and a DC input voltage filtered through the line filter. (DC: Direct Current) It consists of AC / DC rectifier converting into high frequency voltage and high frequency filter part to filter DC high frequency voltage rectified through AC / DC rectifier and supply it to output part.

The temperature sensor 330 serves to measure the temperature of the heat medium oil filled in the cylindrical pipe.

It is connected to one side of the input terminal of the microcomputer, and transmits the measured temperature to the microcomputer.

The high frequency oscillator 340 receives two reference frequencies OSC1 and OSC2 having a delay time DT from a microcomputer and then oscillates two oscillation frequencies A and B through an oscillation frequency driver. .

It is composed of a signal driver SIG201 341, a first OP amplifier U4A 342, and a second OP amplifier U4B 343.

The signal driver (SIG201) 341 receives the oscillation drive signal (OSC) from the output terminal of the microcomputer to the OSC terminal, the first IGBT driving pulse to the (+) terminal of the first OP amplifier (U4A) through the OHI terminal It transmits the reference drive signal of the oscillation driver and transmits the reference drive signal of the second IGBT drive pulse oscillation driver to the positive terminal of the second OP amplifier U4B through the OLO terminal.

The first OP amplifier U4A 342 drives the first IGBT driving pulse oscillation driver according to the driving signal of the signal driver.

The second OP amplifier U4B 343 drives the second IGBT driving pulse oscillation driver according to the driving signal of the signal driver.

The output unit 350 serves to generate heat to the induction coil by eddy current by applying two oscillation frequencies A and B oscillated from the high frequency oscillation unit to the externally mounted induction coil.

This alternates the two IGBT drive drivers alternately at predetermined intervals (t) in response to receiving two IGBT oscillation frequency (A, B) drive signals, thereby altering the high frequency voltage of the rectifier to the external induction coil. To generate heat to the induction coil.

The output unit according to the present invention includes a first IGBT driver 351, a second IGBT driver 352, and first and second resonant capacitors C1 and C2.

The first IGBT driver 351 turns on / off the first IGBT Q1 according to the first oscillation frequency A output from the first OP amplifier U4A.

The second IGBT driver 352 turns on / off the second IGBT Q2 according to the second oscillation frequency B output from the second OP amplifier U4B, but the second IGBT driver 352 is predetermined with the first IGBT Q1. It alternately turns on and off at intervals t.

The first and second resonant capacitors C1 and C2 are connected to the first and second IGBTs Q1 and Q2 in parallel with the externally mounted induction coils between them.

The microcomputer 360 outputs the delay time DT to the same two reference frequencies OSC1 and OSC2 to the high frequency oscillator, and the heat medium temperature filled in the heating pipe detected by the temperature sensor is measured. If it is larger than the reference value, the two reference frequencies OSC1 and OSC2 are adjusted up and output accordingly, and the phase control circuit detects the voltage and current phase difference of the high frequency oscillator and compares and corrects them so as to be the set phase difference. It controls the phase difference of to be kept constant.

It is connected to the output part of the high frequency oscillation part on one side of the input terminal, and detects the voltage and current phase difference of the high frequency oscillation part, and is connected to the input part of the high frequency oscillation part on one side of the output terminal so that the delay time (DT) is applied to the two reference frequencies OSC1 and OSC2, respectively. ) And outputs to the high frequency oscillator, and a temperature sensor is connected to one side of the input terminal, and receives the hot water temperature filled in the heating pipe detected through the temperature sensor, and outputs two reference frequencies (OSC1, OSC2). Configured to control.

The two reference frequencies OSC1 and OSC2 mean a frequency of “23 kHz”, but can be changed, and the delay time between the two reference frequencies OSC1 and OSC2 is “2 to 5 kHz”. Here, the method of setting the current consumption reference value by the microcomputer 60 is a time point when oscillation of the reference frequencies OSC1 and OSC2 ends after the start button 11 is turned on, that is, when the reference frequency becomes “23 kHz”. Check the current consumption value at and set it as the reference value.

Hereinafter, a detailed operation process of the high frequency induction heating apparatus with an externally mounted induction coil according to the present invention will be described.

First, the heat medium oil is introduced into the inlet of the heating pipe and filled to the outlet of the end.

Subsequently, the high frequency induction heating module is operated to operate the externally mounted induction coil wound around the outer surface of the heating pipe.

Subsequently, the commercial AC input voltage is converted into a DC high frequency voltage through the rectifier.

Subsequently, the high frequency oscillator receives two reference frequencies OSC1 and OSC2 having a delay time DT from the microcomputer, and generates two oscillation frequencies A and B through a predetermined logic operation to induce external attachment. It is applied to the coil to generate heat in the induction coil by the eddy current.

At this time, if the heating pipe is composed of the leg heating portion, if the temperature of the heat medium oil flowing into the inlet side was 5 ℃, in the middle of the heating medium heating medium oil induction heating at the same time as the rotary vortex and the temperature rises to 30 ° C. In the heating medium, induction heating at the same time as the rotary vortex, the temperature rises to 60 ℃.

The present invention is compatible with existing heating and hot water equipment.

1 is an overall perspective view showing a high frequency induction heating apparatus with an externally mounted induction coil according to the present invention;

Figure 2 is a block diagram showing the components of the high frequency induction heating module 300 of the high frequency induction heating apparatus with an externally mounted induction coil according to the present invention,

3 is a circuit diagram showing the components of the high frequency induction heating module 300 according to the present invention,

Figure 4 is a perspective view showing a high frequency induction heating apparatus is formed with an externally induction coil formed on the stingray forming portion according to the present invention.

※ Brief description of reference numerals ※

100: cylindrical pipe 110: heating pipe

200: externally mounted induction coil 300: high frequency induction heating module

310: power supply unit 320: rectifier

330: temperature sensor 340: high frequency oscillator

Claims (5)

The heating pipe 110 filled with the heat medium oil is formed by being stacked in a rotary screw type 110a along the inner surface of the cylindrical pipe 100, and the externally induction coil 200 is attached along the outer surface of the cylindrical pipe. It is formed to be wound on the surface at regular intervals, and the external attachment type induction coil is connected to the high frequency induction heating module 300. The external attachment type is characterized in that the heating medium filled in the heating pipe is converted into hot water by induction heating. High frequency induction heating device formed with an induction coil. The method of claim 1, wherein the high frequency induction heating module 300 A power supply unit 310 for supplying power to each device; Rectifier 320 for rectifying the input commercial AC input voltage, A temperature sensor 330 for measuring the temperature of the heat medium oil filled in the cylindrical pipe, A high frequency oscillator 340 which receives two reference frequencies OSC1 and OSC2 having a delay time DT from a microcomputer and then oscillates two oscillation frequencies A and B through an oscillation frequency driver; An output unit 350 for generating heat to the induction coil by eddy current by applying two oscillation frequencies A and B oscillated from the high frequency oscillation unit to the induction coil, Delay time (DT) at each of the same two reference frequencies (OSC1, OSC2) is output to the high frequency oscillator, but if the thermal oil temperature filled inside the cylindrical pipe detected by the temperature sensor is larger than the reference value The two reference frequencies OSC1 and OSC2 are raised and outputted, and the phase control circuit detects the voltage and current phase difference of the high frequency oscillator and compares and corrects them to set the phase difference, thereby maintaining the phase difference between voltage and current constant. High-frequency induction heating apparatus formed with an externally attached induction coil, characterized in that it comprises a micom unit 360 to control so that. The method of claim 2, wherein the output unit 350 is A first IGBT driver 351 for turning on / off the first IGBT Q1 according to the first oscillation frequency A output from the first OP amplifier U4A; The second IGBT Q2 is turned on / off according to the second oscillation frequency B output from the second OP amplifier U4B, and alternately alternates with the first IGBT Q1 at a predetermined interval t. A high frequency induction heating apparatus having an external induction coil formed thereon, wherein the second IGBT driving unit 352 turns on / off. The method of claim 1, wherein the heating pipe 110 In addition, the externally induction-type induction coil is formed in a structure that is stacked at a constant height, the coil heating portion (110b) is formed in which the induction coil is wound at regular intervals along the outer periphery of the cylindrical pipes stacked at a certain height. High frequency induction heating device formed. 2. The high frequency induction heating apparatus according to claim 1, wherein the externally inductively mounted induction coil (200) is formed with a base layer (a) made of a nano-silica-containing polyurethane (PU) coating material.

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