WO2023033613A1

WO2023033613A1 - Combined heat exchanger and joule heat generator using induction heating

Info

Publication number: WO2023033613A1
Application number: PCT/KR2022/013244
Authority: WO
Inventors: 이한석
Original assignee: 이한석
Priority date: 2021-09-06
Filing date: 2022-09-05
Publication date: 2023-03-09
Also published as: KR102374814B1

Abstract

The present invention relates to a combined heat exchanger and Joule heat generator using high and low frequencies and magnetic fields, wherein two or more Joule heat generators are installed in parallel so as to be spaced laterally from each other on both sides of an induction coil to increase heat efficiency, and a liquid can be stably and continuously heated and discharged to the outside by controlling the heating temperature and the amount of heat generated according to the amount of heat required.

Description

Joule heat generator with heat exchanger by induction heating

In the present invention, high and low frequencies (referred to collectively as high and low frequencies. Hereinafter, the same) generated by an induction coil in an induction heater and eddy currents induced in a metal surface (reactor) by magnetomotive force generate Joule heat, and the generated Joule heat is liquid It relates to a heat exchanger combined joule heat generator that exchanges heat with, and more specifically, by installing two or more joule heat generators in parallel by spaced apart on both sides of the induction coil to increase thermal efficiency, and to adjust the heating temperature and heating amount according to the required heat amount. It relates to a Joule heat generator that combines heat exchangers by high-low frequency and magnetic fields that can continuously heat liquid and take it out to the outside.

In general, when AC power is applied to an induction heating device, a high frequency, a magnetic field, and a magnetic flux are generated by an alternating magnetic flux in an induction coil. When magnetic flux comes into contact with a metal surface, eddy current and Joule heat are induced by local selection, skin action, and electrical properties by proximity effect. increases in proportion to the electrical resistance of the metal.

In addition, the amount of Joule heat generated increases as the frequency increases, and the high frequency exhibits greater thermal performance than the low frequency. In addition, the amount of magnetic field generated increases according to the number of turns of the induction coil, and the thicker the metal plate and the closer the separation distance, the higher the heating temperature.

On the other hand, the magnetic field diverges in all directions in the form of a ring toward the S pole. The higher the voltage, the greater the amount of alternating flux and magnetic field generated. The higher the frequency, the greater the magnetic flux. The greater the number of turns of the induction coil, the greater the magnetic flux. There is an electromagnetic property in which the magnetic flux and magnetic field weaken as the distance from the coil increases.

Therefore, according to the magnetic flux of the induction coil, when the eddy current meets a conductive sensitive material (metal or magnetic material) within the range of the magnetic field, Joule heating is generated, and the Joule heating appears as high temperature or red heat.

Joule heat proceeds magnetization in the sensor, usually appears as red heat around 700 ℃, and the temperature rises to the state of magnetic saturation. When the sensor reaches magnetic saturation, magnetization does not proceed any more and maintains a constant temperature even if the current is further increased. That is, by increasing or decreasing the eddy current loss, it is possible to raise the temperature at a low temperature and adjust the thermal performance.

In addition, since the red heat is generated by the heating ability of the Joule heat of the induction coil and the potential difference between the sensor and the induction coil, the heating ability of the magnetism of the induction coil is reduced. By lowering the heat generation temperature of the sensor, the amount of Joule heat generated is reduced, and by exchanging heat with the liquid at the same time, when the rising temperature of the sensor's Joule heat is lowered, the potential difference is reduced and the generation of red heat can be prevented. Therefore, the thermal performance of the induction coil can be raised to the required temperature of the sensitive element, and the thermal performance of the induction coil can be adjusted to meet the required temperature of the liquid to be heated.

The Joule heat generation amount and heating temperature of the induction coil can be controlled by the number and area of the induction coil and the distance between the sensor and the sensor.

Accordingly, if an induction coil with a certain area and number of turns is installed and the separation distance from the metal plate is adjusted, the amount of magnetic field and magnetic flux generated can be adjusted according to the required amount of heat, and the calorific value and heating temperature can be adjusted by adjusting the separation distance from the material of the sensor. can be adjusted. In addition, the heating temperature and heating amount of the sensor can be controlled by adjusting the current, voltage, and frequency flowing through the induction coil.

On the other hand, the volume of a liquid increases as the temperature rises. For example, thermal oil increases in volume by 20% when reaching 200°C, and ethanol or benzene thermally expands by 11%. In addition, as the water is heated, the air in the water is ejected to the outside.

As related prior art, Korean Patent Publication 10-2018-0036168 'fluid boiler using magnetic induction heat' and registered patent 10-0757018 'hot water heating device for heating system using high frequency induction heating' exist, but when heating by induction coil There is a problem of poor sustainability and thermal efficiency, and there are many differences as follows compared to the present invention. In other words, Joule heat generation by metal plate type and integration of heat exchanger, method for controlling Joule heat generation capacity of induction coil, method for adjusting and optimizing thermal performance and heating capacity of magnetic field and magnetic flux, required heating temperature and amount of heat exchange according to liquid to be heated Joule heat control method and optimization technology, technology to double power consumption by doubling the utilization rate of magnetic field and magnetic flux, measures to prevent red heat, low-temperature rise of Joule heat, thermal expansion and evaporation of the liquid to be heated Countermeasures, storage method of liquid to be heated, maximization of thermal efficiency, complex structure, simplification of technology realization, function and method to heat various liquids including chemical liquids, application method of heat according to the requirements of liquid to be heated There were problems such as usability, applicability and continuity as industrial technology, and there were no countermeasures or low efficiency.

An object of the present invention for solving the above problems is a heat exchanger combined with a heat exchanger by high-low frequency, magnetic field, and magnetic force, which can efficiently use electrical energy by minimizing power consumption and also a heat exchanger, and has a simple, safe and economical structure. is to provide

In addition, the present invention is eco-friendly by replacing fossil fuels by focusing on a method that can reduce power consumption by a factor of 1/2, with power utilization efficiency as high as 95% or more for high-low frequency, magnetic field, magnetic flux, and thermal performance of the induction coil. It is intended to provide an appropriate heat acquisition means.

The heat exchanger combined joule heat generator by induction heating according to the present invention has an inner space filled with a heating medium, has a heating surface 12 on one inner surface, and is made of metal in which a film-type insulator 14 is installed on the outside of the heating surface. Two joule heat generator bodies 10 in the shape of a hexahedron; An induction coil in which the two joule heat generator bodies are installed in parallel, and are installed upright and standing between them to generate high and low frequencies and magnetic fields, and Joule heat of 40 to 350 ° C is generated by high and low frequencies from 50 Hz to 30 MHz. (20); Stainless rods 30 installed across the body to maintain a gap inside the main body; An air cock 40 installed on the upper part of the main body and for discharging air and adjusting pressure therein; a fluid outflow pipe 52 for outflowing the heating medium to the upper part of the main body; a fluid inlet pipe 54 for introducing a heat medium into the lower portion of the main body; A bypass pipe 56 connecting the fluid outlet pipe and the fluid inlet pipe as a pipe for liquefying and cooling again as the evaporation of the heat medium inside the main body passes through; an induction heating device 60 for generating high and low frequencies, a magnetic field, and magnetic flux by an induction coil installed inside the main body; A temperature sensor 70 installed on the rear surface of the main body 13; and a control unit 80 for controlling heat generation due to high and low frequencies and magnetism of the induction coil, and the main body 10 is a ferrite stainless steel plate having a thickness of 0.5 mm, spaced apart from both sides of the induction coil by 3 mm to 30 mm in parallel. It is mounted, and it is formed to continuously carry the heated liquid to the outside at the same time as generating heat, and to generate induced heat.

The filling of the heating medium of the body is preferably filled within 80% of the volume of the body.

The heat exchanger combined joule heat generator according to the present invention can heat various liquids to the required temperature, enables rapid heating, reduces electricity usage fees, has very high thermal efficiency, and realizes a boiler with a simple structure without fuel and combustion. .

According to the present invention, by installing two joule heat generators in parallel on both sides of the induction coil, spaced apart from side to side, the efficiency of using magnetic flux is doubled compared to the method of using only one side, so the effect of doubling the electric energy there is. Therefore, since there is an effect of reducing power consumption by half, a low-power boiler can be realized.

Although the inside of the Joule heat generator of the present invention is sealed, safety can be ensured by absorbing the volume expansion of the heating medium and reducing the pressure generated during heating.

The present invention can continuously heat and exchange heat with liquid at the same time as heat generation and take it out, and since it also serves as a heat exchanger, the structure of the boiler is simple and economic efficiency can be realized.

The present invention exhibits heat generation performance with a simple structure, has no consumable parts, and has the effect of enabling upright miniaturization and thinning of the product without the need to mount a separate heat exchanger and mechanical device. In addition, it can be used semi-permanently without deterioration of thermal performance during use, and since it is fixed and has a large area, there is an effect of shortening the heating 'heat exchange time' of heating water.

In addition, the heating effect can be adjusted according to the required amount of heating water and the required temperature according to the area and number of turns of the induction coil, and according to the rotation speed of the circulation pump, the temperature of the heating water and the heating time can be adjusted according to the purpose.

It does not generate carbon dioxide gas, fine dust, etc., and there is no risk of dust, explosion, or fire, and it is eco-friendly. As a storage box for heated heat medium, hot water can be supplied immediately upon operation, and it can be used as a heat source that can replace fossil heat and electrical resistance heat as it obtains heat by fusing high and low frequencies with sensitive materials (magnetic material, metal). It can be used as a heat source for alternative energy such as heat oil boilers and water heaters.

The heat exchanger combined joule heat generator of the present invention generates heat and simultaneously obtains heat without a separate medium or mechanical device by power and metal plate structure, prevents red heat, consumes less power, and has a simple structure that can be taken out to the outside for heat exchange. It is a low-power Joule heat generator that combines the electromagnetic properties and the physical properties of the liquid to be heated to adjust the amount of heat generated by the type and thickness of the metal plate material and the separation distance. It absorbs the increase in volume due to thermal expansion, and has the function of storing liquid and exchanging heat, preventing red heat by lowering the potential difference, and controlling the heating temperature and heating amount according to the required heat quantity to provide stable and continuous liquid can be heated and taken outside.

In addition, the present invention can manufacture and install a joule heat generator by selecting various outputs and a wide range of frequencies. The joule heat generator lowers the temperature to 40 ~ 350 ℃ and fills the heat medium inside, so the heat medium exerts a cooling effect, reducing the potential difference and preventing the generation of red heat.

The present invention provides the present invention for the use of generating Joule heat by fusing the electromagnetic properties of the high frequency, magnetic field and magnetic flux where induction heating occurs and the physical properties of a liquid to be heated, heating the liquid, exchanging heat, and taking it outside.

In the present invention, the high-low frequency, magnetic field, magnetic flux, and thermal performance of the induction coil are high in power utilization efficiency of 95% or more, and eco-friendly heat can be obtained by focusing on a method that can reduce power consumption by 1/2 times.

In particular, in the carbon-neutral era, fossil fuels are replaced with electric energy, power consumption is reduced, and a structure capable of heating various liquids using induction heating is disclosed to produce fuel- and combustion-free boilers, water heaters, and chemical liquid heaters. We want to provide technology that can be used as such.

In addition, by reducing the use of fossil fuels, which were mainly used for heating or hot water generation, a great effect can be expected in realizing carbon neutralization.

1 is a diagram schematically showing the configuration of the present invention.

2 is a plan view of a Joule heat generator according to an embodiment of the present invention.

3 is a cross-sectional view of a Joule heat generator according to an embodiment of the present invention.

In the present invention, a Joule heat generator that combines heat exchanger by high frequency and magnetomotive force will be described as an example.

It will be understood that the present invention is not limited to the following examples, and various modifications are possible by those skilled in the art. Hereinafter, a preferred embodiment according to the present invention will be described in detail.

In the present invention, the sensor refers to a metal plate or a magnetic material that generates eddy current and Joule heat by high and low frequencies, magnetic fields, and magnetic flux, and a boiler refers to heat that heats all liquids such as water, thermal oil, and chemical liquids.

The high-frequency induction heating device uses a device composed of parts such as a high-frequency generator, a frequency adjusting device, a control system, and an induction coil. The power used is based on a rated voltage of 220V and a frequency of 60Hz, and the rated current is adjusted as necessary, but in the present invention, the rated current is to use power of less than 16A according to household power.

The induction heating device used AC power of 200W ~ 2000W to heat the induction coil. however. The present invention is not limited to the above embodiment, and various outputs and a wide range of frequencies can be selected and are not limited thereto.

1 is a diagram schematically showing the configuration of the present invention, Figure 2 is a plan view of a joule heat generator according to an embodiment of the present invention, Figure 3 is a cross-sectional view of a joule heat generator according to an embodiment of the present invention, see this The invention will be described in detail for each component.

First, the main body 10 has an

inner space

16 and 17 filled with liquid, and has a heating surface 12 on an inner surface of one side thereof, and a film-type insulator 14 outside the heating surface 12 on the inner surface of the main body. has a hexahedral shape in which is installed.

The induction coil 20 is provided in the inner space of the body to generate high and low frequencies and a magnetic field, and Joule heat of 40 to 350 ° C is generated in the metal plate by high and low frequencies of 50 Hz to 30 MHz. The installation of the induction coil of the present invention is based on a vertical type. The vertical type occupies a small area, and two Joule heat generators can be installed on both sides of the induction coil. It can also be installed horizontally, but it is necessary to change the location of the fluid outlet pipe and bypass pipe of the Joule heat generator. In the present invention, the generation of red heat is prevented by reducing the potential difference by raising the temperature of the induction coil and the sensitive element at a low temperature to generate heat to 40 to 350 °C.

The stainless rod 30 is installed to maintain a gap across the inside of the main body in order to prevent deformation of the shape due to rising temperature of the main body.

The air cock 40 is installed on the upper part of the body and is for internal air discharge and pressure control.

The fluid outlet pipe 52 is for flowing the heat medium to the upper part of the body, and the fluid inlet pipe 54 is for the heat medium to flow into the lower part of the body. It is a pipe for liquefying and cooling again while passing the evaporation of the heat medium inside the main body, and a bypass pipe 56 connecting the fluid outlet pipe and the fluid inlet pipe is installed.

The induction heating device 60 is installed around the main body and is a device for generating high frequency, magnetic field, and magnetic flux by an induction coil.

A temperature sensor 70 is installed on the rear surface 13 of the main body to measure the temperature of the heating medium.

The control unit 80 is for controlling various functions such as the induction coil, high frequency generation and adjustment, and output of the induction heating device.

In addition, the amount of magnetic field generated and the heating temperature of the liquid to be heated can be expanded or reduced by simply and quickly adjusting the control system. The high-low frequency induction heating device and the induction coil can be manufactured to meet the requirements according to the order of a specialized company, and are not described because the scope is different from the present invention.

That is, the present invention generates Joule heat in a metal plate by high frequency and magnetism by an induction heating device, generates Joule heat while exchanging heat with a liquid, and is a Joule heat generator that also serves as a heat exchanger for continuously carrying the heated liquid to the outside. it's about

The present invention was invented to operate as a boiler or other heating device such as a circulation pump using water or oil as a heat medium by using the properties of an induction heating device by an induction coil used in an induction range or the like. When used as a boiler for heating, the joule heat generator of the present invention can be used by connecting it to a conventional heating pipe and distributor.

The manufacturing process of the joule heat generator will be described as an embodiment of the heat exchanger combined joule heat generator of the present invention.

An annular induction coil with a diameter of 22 cm is used as an induction coil for high frequency and magnetic field generation. The induction coil is not limited in surface area and number of turns depending on the amount of heat required.

All conductive materials (metals) generate Joule heat when in contact with a magnetic field, and the heating temperature varies depending on the material. Non-ferrous metals such as aluminum can also be used as they are because they generate Joule heat. When using steel plates, anti-rust treatment is required.

For the main body, it is preferable to use a ferrite stainless steel plate with a thickness of 0.5 mm. According to the area of the induction coil, the size of the main body of the joule heat generator is 25 cm wide x 30 cm high x 2.0 cm thick, and the size is 12 mm larger than the radius of the induction coil, and the shape is a hexahedron. Accordingly, a space for filling water therein, that is, a filling part 16 and a spare part 17 is provided, and the volume becomes 1.5 liters. However, in use, the filling water capacity becomes 1.2 liters at 80% of the volume. The margin of 20% of the volume absorbs the increase due to the thermal expansion of the liquid such as thermal oil.

The reason why the horizontal and vertical lengths of the Joule heater of the present invention are greater than the diameter of the induction coil is to increase the efficiency of the magnetic field and magnetic flux by reducing the leakage magnetic field. That is, the magnetic flux generated in the induction coil becomes a leakage magnetic field only from the magnetic flux traveling straight from the end, and most of the magnetic flux irradiates and contacts the heating surface 13 nearby, thereby increasing the amount of heat generated. As the utilization rate of magnetic flux increases, the amount of Joule heat generated increases, so power consumption can be reduced.

The height of the hexahedron of the main body (side surface, vertical) is made larger than the horizontal length so that the liquid (heating medium) is filled to 80% or less (filling part 16) and the volume is secured so that it has a margin 17 of 20% or more. do. The remaining 20% of the upper volume (reservation part) is used as a space to absorb the volume and internal pressure that expands when the heat medium is heated, and is used as a space to absorb residual heat.

In addition, the reason for mounting two joule heat generators, one on each side of both sides of the induction coil, is that the magnetic field is radiated in all directions toward the S pole, and one side of the elevation of the joule heat generator (heating surface. 12) faces the induction coil. By installing Joule heat generators on the left and right sides, both sides of the magnetic field can be used at the same time, which has the effect of doubling the efficiency of using the magnetic field and magnetic flux.

Therefore, power consumption can also be reduced by half, so that the joule heat generator can be operated with less power. If necessary, only one Joule heat generator can be used by using only one side of the induction coil.

The shape and capacity of the joule heat generator and the surface area of the heating surface of the elevation can be adjusted according to the surface area of the induction coil according to the required heat amount and heating temperature. The shape and volume are not limited to the above-described sizes, but can be adjusted as needed.

The temperature of the heating medium can be controlled by the rotation speed of the circulation pump and the control system, etc.

The main body of the heat exchanger combined Joule heat generator of the present invention is preferably manufactured in a hexahedral shape. For the example, two joule heat generators are manufactured. The two joule heat generators are of the same type, but the installation locations of the parts are opposite depending on the left and right sides. In the above-mentioned hexahedron, the surface having the largest area is called the elevation part, and the other surfaces are called upper, lower, and side surfaces, respectively. The elevation part is divided into a heating surface 12 and a rear surface 13.

In the hexahedral shape of the body, the fluid inlet pipe is installed on the lower surface, and the fluid outlet pipe, bypass pipe, and air cock are installed on the upper surface. The parts of one joule heat generator are one hexahedron, one fluid outflow pipe on the top side, one bypass pipe, one air cock, one fluid inlet pipe on the bottom side, one electrical insulator on the heating side, one piece of electrical insulator on the rear side It consists of one temperature sensor and one stainless steel rod with a length of 20mm inside.

As connecting parts, one T-type connector is installed on the fluid inlet pipe, two elbow connectors are required on the fluid outlet pipe, and three elbow connectors are required on the bypass pipe. The elbow connector is used as a connector at the part that is bent in the shape of 'a' when connecting pipes of each pipe, and the T-type connector is used as a connector when connecting to the bypass pipe and fluid inlet pipe. All materials and parts use ferrite stainless steel plate and stainless steel pipe.

The main body (hexahedron) is preferably two connected in parallel, preferably two of 25 cm x 30 cm x 0.5 mm thick, 2 cm x 25 cm x 2 mm thick, 2 cm x 30 cm x 2 mm thick. , and the fluid outflow pipe, the fluid inflow pipe and the bypass pipe use a stainless pipe with an outer diameter of 15mm, the length is cut according to the position and the connection pipe, and a connector is attached to the location where the pipe connection is needed to make the pipe will connect The connection of each pipe can be replaced by welding.

The reason why the main body is made in the form of a hexahedron is to have a certain volume, and one elevational part of the hexahedron is used as a heating part 12 that generates Joule heat by interviewing an induction coil with each other, and the rear surface 13 is a temperature sensor ( 70) is attached. The volume is used as a space for storing heat medium and exchanging heat. The shape of the Joule heat generator of the present invention can be changed depending on the purpose and shape of the induction coil regardless of the design of the induction coil.

In the present invention, the induction coil is vertical, and the Joule heat generator is exemplified in the form of a hexahedron. Within the range of the magnetic field of the induction coil, both sides of the induction coil 20 and the heating surface 12 of the hexahedron are installed facing each other to generate heat, and the liquid stored in the hexahedron is heated and heat exchanged to continuously take it outside. Although the shape of a hexahedron is exemplified in the present invention. A form having a volume is included in the scope of the Joule heat generator of the present application regardless of the material, volume and shape.

Inside the hexahedron, a stainless rod 30 for spacing is welded to a thickness of 20 mm on one side so as to cross the thickness portion in the center of the stainless steel plate of the rear surface 13, not the heating part at the center position. The stainless rod prevents deformation of the shape of the hexahedron as the temperature rises.

A hexahedron is made by butt-welding each cut surface of the stainless steel plate to secure watertightness and form a hexahedron. Although the shape of the body is hexahedral, it can be freely deformed according to the shape of the induction coil, and a container generating Joule heat corresponding to the induction coil belongs to the scope of the present invention regardless of its shape.

In the Joule heat generator of the present invention, a hole for inserting a fluid outflow pipe 52 for taking out fluid is drilled on the upper surface of the Joule heat generator to allow the outflow of the heat medium, and a hole having a diameter of 15.1 mm is drilled through the hole to be immersed in the heat medium inside. Install a circular stainless steel tube with an outer diameter of 15 mm * a length of 15 cm so that 10 cm inside and 5 cm outside are exposed upright and penetrated, and weld around the hole to ensure watertightness.

In this way, 5 cm is submerged in the filling limit line 15 of the heating medium of the Joule heat generator, and the fluid outlet pipe exposed to the outside is used as a pipe connecting the pipe for fluid outlet. In addition, each part installed on the upper surface may be installed on the upper part of the side part of the hexahedron.

80% of the volume of the main body (hexahedron) (filling part 16) is used for filling the liquid, and the volume of the spare part 17 of the hexahedron is used as a space to relieve internal pressure and volume increase caused by the temperature rise of the liquid. will do

For the fluid inlet, in the same way as the fluid outlet described above, drill a 15.1mm hole on the lower surface of the hexahedron at a diagonal position with the fluid outlet, insert the fluid inlet pipe, and weld around the hole to secure watertightness. The reason for the installation is to improve the convective circulation of the liquid inside the Joule heat generator. A T-shaped connector is connected to the lower part of the fluid inlet pipe so that the bypass pipe 56 can be connected.

A bypass tube is drilled through a hole with an outer diameter of 15.1 mm in the upper surface of the cube. Insert the bypass pipe and weld around the hole to ensure watertightness. The opposite end of the bypass pipe is connected to the T-type connector of the fluid inlet pipe, but the length can be adjusted as needed. The bypass pipe can also be installed in the fluid outlet pipe.

While passing through the bypass pipe, water vapor or oil vapor is cooled by the temperature difference between the bypass pipe and the oil vapor, and is reduced to liquid again to return to liquid (heating medium). The longer the length of the bypass pipe, the better the cooling effect.

The air cock is fixed by punching a hole in the upper surface of the hexahedron and tightly fitting the air cock into the hole. The air cock functions to lower the pressure inside the hexahedron by discharging air generated while the liquid is heated to the outside. Various air cocks have been developed in the past.

A film-type electrical insulator (eg, polyimide film, mica, etc.) is attached to the heating surface 12 of the elevation of the joule heater of the main body.

The insulator has the effect of passing magnetic force and insulating heat. The reason for attaching the insulator is to prevent direct contact with the induction coil by generating Joule heat and to prevent the generated Joule heat from being transferred to the induction coil. The heating value of the Joule heat generator can be controlled by the thickness of the insulator.

A temperature sensor 70 is attached to the rear surface of the elevation of the hexahedron at an appropriate position below the height 15 where water is filled. The output of the high-frequency induction heating device is adjusted in the control system with the temperature measured by the temperature sensor. A temperature sensor may be attached to the fluid outlet pipe. Thus, the production of the joule heat generator is completed.

Referring to the mounting of the joule heat generator of the present invention, the induction coil is fixed vertically (standing). In standing uprights, fixtures to be fixed must be non-metallic, and plastic injection molding fixtures are appropriate. The joule heat generator determines the separation distance according to the required heating temperature and calorific value on both sides of the induction coil, and is placed parallel to both sides of the induction coil at a distance of 3 mm to 30 mm, facing each other and parallel to the heating surface 12 of the elevation. The separation distance controls the heating temperature and heating value of the sensor. The closer the Joule heat generator is to the induction coil, the stronger the magnetic field and the higher the heat generation temperature. At this time, the magnetic field and magnetic flux go almost straight from the induction coil toward the sensor. As heat is generated by proximity effect, it can be adjusted according to the separation distance.

In addition, the installation height of the Joule heat generator is installed so that the center of the heating medium filling part 16 of the hexahedron and the center of the induction coil coincide with each other. When installed in this way, the induction coil is positioned 12 mm inside from the end of the cube. The required heating temperature and heat generation can be adjusted by the separation distance and installation height, and the efficiency of using the magnetic field and magnetic flux can be maximized, and it can be controlled by the control system.

According to one embodiment of the present invention, a circulation pump is mounted at an appropriate position of the fluid inlet pipe in order to make the present invention function as a boiler. When the fluid inlet pipe and the fluid outlet pipe are connected to the heating water distributor and operated, the inside of the joule heat generator is filled with heating water. When power is applied to the induction coil and the circulation pump 120 operates, the joule heat generator also starts to operate, and the joule heat generator and heat exchanger functions simultaneously.

When the circulation pump is operated, the volume of the heat medium stored in the hexahedron always maintains the same level (water level) because the suction force of the fluid inlet pipe and the suction force of the fluid outlet are the same. A boiler by induction heating is completed by the above method and process.

When you want to use it as a boiler, remove the boiler from the existing boiler equipped with the heating pipe 130 including the distributor and the room temperature controller, and connect the fluid inlet and outlet of the distributor to match, and apply power to function as a boiler for heating. will do

The embodiments presented above are illustrative, and those skilled in the art may make various modifications and variations to the embodiments presented without departing from the technical spirit of the present invention. The scope of the present invention is not limited by these variations and modifications.

Claims

In the Joule heat generator generating heat by induction heating,

Two joule heat generator main bodies 10 having an inner space filled with a heating medium, having a heating surface 12 on one inner surface thereof, and having a film-type insulator 14 installed outside the heating surface;

An induction coil in which the two joule heat generator bodies are installed in parallel, and are installed upright and standing between them to generate high and low frequencies and magnetic fields, and Joule heat of 40 to 350 ° C is generated by high and low frequencies from 50 Hz to 30 MHz. (20);

Stainless rods 30 installed across the body to maintain a gap inside the main body;

An air cock 40 installed on the upper part of the main body and for discharging air and adjusting pressure therein;

a fluid outflow pipe 52 for outflowing the heating medium to the upper part of the main body;

a fluid inlet pipe 54 for introducing a heat medium into the lower portion of the main body;

A bypass pipe 56 connecting the fluid outlet pipe and the fluid inlet pipe as a pipe for liquefying and cooling again as the evaporation of the heat medium inside the main body passes through;

an induction heating device 60 for generating high and low frequencies, a magnetic field, and magnetic flux by an induction coil installed inside the main body;

A temperature sensor 70 installed on the rear surface of the main body 13; and

A control unit 80 for controlling heat generation due to high and low frequencies and magnetism of the induction coil; and the main body 10 is a ferrite stainless steel plate having a thickness of 0.5 mm, spaced apart from 3 mm to 30 mm on both sides of the induction coil in parallel A heat exchanger combined joule heat generator by induction heating, characterized in that it is mounted and continuously carries out the heated liquid to the outside at the same time as generating heat and generates induction heat.
According to claim 1,

The filling of the heat medium of the body is characterized in that the filling of the body within 80% of the volume of the body, the heat exchanger combined joule heat generator by induction heating.
A boiler comprising a heat exchanger combined joule heat generator by induction heating characterized in that it comprises the heat exchanger combined joule heat generator by induction heating of claim 1 or claim 2.
A heat generating device comprising a heat exchanger combined joule heat generator by induction heating including the joule heat generator combined with a heat exchanger by induction heating according to claim 1 or claim 2.