KR20200108681A - Intermediate Induction Heating Type Boiler - Google Patents

Abstract

The present invention relates to a medium-frequency induction heating boiler. According to the present invention, the medium-frequency induction heating boiler comprises: a boiler body (100); a steam discharge pipe (120) having a steam valve (121) installed on one side of the upper part of the boiler body (100); an air discharge pipe (130) having an air valve (131) installed on the other side of the upper part of the boiler body (100); and a heating unit (140). According to the present invention, thermal efficiency can be improved.

Description

Intermediate Induction Heating Type Boiler

The present invention relates to a medium-frequency induction heating boiler, and more particularly, a heat medium in a short time by rapidly heating only the lower part of the boiler body by the medium-frequency current of a spiral square induction coil installed at a certain angle on the lower outer peripheral surface of the medium frequency induction heating boiler body. The present invention relates to a medium-frequency induction heating boiler that enables rapid heating of oil and is easy to manufacture and install by a simple configuration of the medium-frequency induction heating boiler and further improves thermal efficiency.

Generally known medium frequency induction heating is largely divided into induction heating and dielectric heating according to the physical properties of the material to be heated, and the induction heating method is used to heat a conductive metal, and the frequency used for the medium frequency induction heating is It is to heat a conductive metal by applying power up to 10000 Hz by exceeding the commercial frequency of 100 Hz, which is usually a low frequency.

The medium-frequency induction heating method as described above is used to dissolve the metal placed in the crucible by high temperature resistance heating by an induction current generated by flowing medium-frequency electricity through a coil surrounding the crucible in the furnace.

In addition, as in Korean Patent Registration No. 10-0189182 or Utility Model Publication No. 1987-0003301, it is mainly used for brazing welding jointing of a medium frequency induction heating method or quenching of metal workpieces.

On the other hand, when the medium-frequency electricity by the medium-frequency induction heating flows through the coil as described above, the heating temperature generated in the coil is formed too high, so that the heating medium oil for generating hot water or steam of the induction heating type boiler There was an unsuitable drawback to heating.

Therefore, conventional boilers that can obtain hot water or high-temperature steam by heating heat medium oil have a separate combustion unit installed inside the boiler body to heat heat medium oil such as water by heat generated during combustion of oil, or registered in Korea. As in the electric boiler of Patent Publication No. 10-1255822, heat is generated by connecting power to a heat pipe formed in a coil shape provided on one side wall of a heating tank, and at this time, the water is heated by using a water distribution device. It is used for domestic hot water or heating by evenly distributing it to the tank and making it in contact with the heat pipe.

However, in the case of the conventional combustion boiler and the electric boiler as described above, it is difficult to quickly heat the heating medium oil, so that a lot of time is required to generate hot water or heating steam, as well as separate heating for contact heating of the heating medium oil inside the boiler. Due to the installation of a combustion chamber, a combustion tube or a heat pipe, the structure of the boiler is complicated, and in particular, there is a large problem in that the thermal efficiency cannot be improved beyond expectations.

1. Korean Patent Registration No. 10-0189182 (Registration Date: January 14, 1999) 2. Republic of Korea Utility Model Publication No. 1987-0003301 (Announcement date: October 06, 1987) 3. Korean Patent Registration No. 10-1255822 (Registration Date: April 11, 2013)

The present invention was conceived in consideration of the above points, and its object is to rapidly heat only the lower part of the boiler body by the mid-frequency current of a spiral square induction coil installed at a certain angle on the lower outer peripheral surface of the medium frequency induction heating boiler body, The heating medium oil can be quickly heated within a short time, and the simple configuration of the medium-frequency induction heating boiler makes it easy to manufacture and install, while further improving the thermal efficiency, as well as eliminating separate fuel consumption by heating the boiler. While there is no pollution at all, it is possible to easily measure the heat medium oil level and steam pressure inside the boiler body to maintain the most appropriate heat medium oil level and steam pressure inside the boiler body, and the inside of the spiral square induction coil By ensuring that coolant of a constant temperature always flows through the phosphorus coolant through-hole, it prevents overheating of the square induction coil and allows a stable medium-frequency current to flow, thereby preventing damage to the square induction coil and the device in advance. It is to provide a medium frequency induction heating boiler.

As a technical configuration for achieving the above object, the medium frequency induction heating boiler according to the present invention is connected to the water supply valve 111 and the water supply pump 112 to the lower side of the inside, so that the water supply pipe 110 through which the heat medium oil of the water supply unit flows is connected A boiler body 100;

A steam discharge pipe 120 communicated so that steam is discharged through a steam valve 121 to an upper side of the boiler body 100; An air discharge pipe communicated so that the air inside the boiler body 100 is discharged when steam is generated by inflow and heating of the heat medium oil inside the boiler body 100 through the air valve 131 to the other side of the boiler body 100 (130); Includes; a heating unit 140 installed at the lower periphery of the boiler body 100 to heat the heat medium oil supplied therein,

At one side of the air discharge pipe 130 that is opened and closed as the air valve 131, a steam connection pipe 151 is communicated to discharge a part of the steam inside the boiler body 100, and at the end of the steam connection pipe 151, a boiler A water level meter 150 is installed to check the heat medium oil level inside the body 100, and the steam flowing into the water level meter 150 through the steam connection pipe 151 is re-boiler on the lower side of the water level meter 150. The steam inlet pipe 152 flowing into the lower side of the main body 100 is communicated, and the heat medium oil heating unit 140 installed at the lower periphery of the boiler main body 100 is cooled by flowing cooling water for preventing overheating. A square induction coil 160 in which the cooling water through hole 161 is formed is installed in a spiral shape on the lower outer surface of the boiler body 100 at a predetermined interval (t) to be supported and fixed to the coil support 170, while the heating medium oil heating unit ( At one side of 140), a power supply unit 180 and a control unit 190 are installed, and a high-voltage capacitor coil 191 for generating a medium-frequency current is installed inside the control unit 190, and the heat medium oil heating unit 140 It is addressed to supply a medium-frequency current to the square induction coil 160 of the square, and at the lower and upper ends of the square induction coil 160, the cooling water inlet and outlet pipes 201 ( 202 is characterized in that it is configured to communicate with each other in communication with the cooling water tank 200 through the circulation valve 203.

In addition, in the present invention, the square induction coil 160 of the heat medium oil heating unit 140, which is spirally installed on the lower periphery of the boiler body 100, is made of copper (Cu) material having excellent thermal conductivity. The boiler body 100, in which the lower side of the outer surface is heated to a high temperature by the medium frequency current of the square induction coil 160, is made of carbon steel to prevent damage due to high heat.

In addition, the square induction coil 160 is spaced apart from the outer surface of the boiler body 100 at intervals of 20 to 150 mm and is installed in a spiral shape.

In addition, a capacitor 210 is connected to one side of a high-voltage capacitor coil 191 that generates a medium-frequency current in the power supply unit 180 and the control unit 190.

According to the intermediate frequency induction heating boiler of the present invention, only the lower part of the boiler body is rapidly heated by the mid-frequency current of the spiral square induction coil installed at a certain distance on the lower outer circumference of the medium frequency induction heating boiler body, thereby rapidly heating the heat medium oil within a short time. It is easy to manufacture and install by the simple configuration of the medium-frequency induction heating boiler, and the thermal efficiency can be further improved, and there is no separate fuel consumption due to heating the boiler, so that there is no pollution at all, the boiler body The internal heat medium oil level and steam pressure can be easily measured to maintain the most appropriate heat medium oil level and steam pressure inside the boiler body, and the cooling water through-hole inside the spiral square induction coil always has a constant temperature. By allowing coolant to flow, a stable medium-frequency current can flow while preventing overheating of the square induction coil, and accordingly, there is an excellent effect of preventing damage to the square induction coil and the device.

1 is a block diagram of a medium frequency induction heating boiler according to the present invention.
Figure 2 is a cross-sectional structure diagram of a rectangular induction coil installed at the outer periphery of the lower middle frequency induction heating boiler of the present invention.
3 is a schematic configuration diagram of a power supply unit and a control unit for a medium frequency induction heating boiler according to the present invention.
Figure 4 is a schematic configuration diagram of a state in which the cooling water for preventing overheating flows into the spiral square induction coil, which is the heating unit of the heating medium of the present invention, and is connected to the cooling water tank to cool.

Hereinafter, a detailed description of a medium frequency induction heating boiler according to an embodiment of the present invention is as follows.

1 is a configuration diagram of a medium frequency induction heating boiler according to the present invention, FIG. 2 is a cross-sectional structure diagram of a square induction coil installed as a lower outer periphery of the intermediate frequency induction heating boiler according to the present invention, and FIG. 3 is a schematic diagram of the intermediate frequency induction heating boiler according to the present invention. A schematic configuration diagram of the power supply unit and the control unit, Fig. 4 is a schematic configuration diagram of a state in which the cooling water for preventing overheating is introduced into the spiral square induction coil, which is the heating medium heating unit of the present invention, and connected to the cooling water tank for cooling. The boiler is connected to the water supply valve 111 and the water supply pump 112 to the inner lower side of the cylindrical boiler body 100 so that the water supply pipe 110 through which the heating medium oil of the water supply unit (unjoined) flows in communication, and the boiler body On one side of the upper portion of the 100, a steam discharge pipe 120 is communicated through a steam valve 121 so that steam generated by heating the heat medium oil inside the boiler body 100 is transmitted through the steam discharge pipe 120. Make sure it is discharged smoothly.

In addition, the air discharge pipe 130 is communicated with the other side of the boiler body 100 opposite to the upper steam discharge pipe 120 through an air valve 131, so that the heat medium oil inside the boiler body 100 flows in and It is installed so that the air inside the boiler body 100 is discharged smoothly when steam is generated by heating, and the heat medium oil supplied to the inside of the boiler body 100 is heated at the lower periphery of the boiler body 100 for hot water or heating. A heating unit 140 for generating steam is installed to constitute a boiler.

At this time, a steam connection pipe 151 through which a part of the steam inside the boiler body 100 is discharged is communicated to one side of the air discharge pipe 130 opened and closed as the air valve 131, and the steam connection pipe 151 At the end, a water level meter 150 for checking the level of the heat medium oil inside the boiler body 100 is installed, and at the lower side of the water level meter 150, the steam introduced into the water level meter 150 through the steam connector 151 The steam inlet pipe 152 flowing into the lower side of the boiler main body 100 is communicated.

In addition, the heating medium oil heating unit 140 installed at the lower periphery of the boiler body 100 has a square induction coil 160 having a cooling water through hole 161 formed therein so that the cooling water for preventing overheating flows into the inside in a spiral shape. The boiler body 100 is installed at a certain interval (t) on the lower outer surface of the boiler body 100 and supported and fixed to the coil support 170, wherein the square induction coil 160 is spaced apart from the outer surface of the boiler body 100 at a distance of 20 ~ 150 mm. And installed in a spiral.

Subsequently, at one side of the heat medium oil heating unit 140, a power supply unit 180 and a control unit 190 are installed, and a high-voltage capacitor coil 191 for generating a medium frequency current is installed inside the control unit 190 Is addressed to supply a medium-frequency current to the square induction coil 160 of the heating medium oil heating unit 140, and coolant flows into and out of the cooling water through hole 161 at the lower and upper ends of the spiral square induction coil 160 The cooling water inlet and outlet pipes 201 and 202 are respectively communicated and communicated with the cooling water tank 200 through the circulation valve 203.

In addition, in the present invention, the square induction coil 160 of the heat medium oil heating unit 140, which is spirally installed on the lower periphery of the boiler body 100, is made of copper (Cu) material having excellent thermal conductivity. The boiler body 100, in which the lower side of the outer surface is heated to a high temperature by the medium frequency current of the square induction coil 160, is made of carbon steel to prevent damage due to high heat.

In addition, a capacitor 210 is connected to one side of a high-voltage capacitor coil 191 that generates a medium-frequency current in the power supply unit 180 and the control unit 190.

Each configuration constituting the medium frequency induction heating boiler of the present invention configured as described above will be described in detail as follows.

As shown in Figs. 1 to 3, the heat medium flowing from the water supply unit (not shown) by the operation of the water supply pump 112 through the water supply pipe 110 communicated with the inner lower side of the cylindrical boiler body 100 In the case of heating oil to obtain high-temperature steam, the boiler body 100 is heated by an operation of heating the lower outer surface of the boiler body 100 by a heating unit 140 installed at the lower periphery of the boiler body 100. ) The heat medium oil supplied to the inside is heated to generate heating steam.

At this time, the heat medium oil heating unit 140 installed at the lower periphery of the boiler body 100 has a cooling water through-hole 161 formed therein so that the cooling water for preventing overheating flows into the interior as shown in FIGS. 1 and 2. The square induction coil 160 is installed in a spiral shape on the lower outer surface of the boiler body 100 at a certain interval (t) to be supported and fixed on the coil support 170, and flows into the square induction coil 160. The lower outer periphery of the boiler main body 100 is instantaneously heated to a temperature of 700 to 800° C. by a medium-frequency current of ㎐, and accordingly, the heat medium oil such as water flowing into the lower inner side of the boiler main body 100 is also It is heated instantaneously so that it can generate heating steam in a short time.

At this time, the square induction coil 160, which is the heat medium oil heating unit 140, which is spirally installed on the lower periphery of the boiler body 100, is made of a copper (Cu) material and has excellent thermal conductivity. The boiler body 100, which is heated to a high temperature by the medium frequency current of the induction coil 160, is made of carbon steel, so as to prevent damage due to the high heat generated by the medium frequency of the square induction coil 160.

In addition, the square induction coil 160 is spaced apart from the outer surface of the boiler body 100 at intervals of 20 to 150 mm and is installed in a spiral shape, so that the square induction coil 160 is installed close to the outer surface of the boiler body 100 within 20 mm. In this case, when the mid-frequency current is applied to the square induction coil 160, high heat is generated inside the square induction coil 160 along with a phenomenon such as an electric short-circuit, so that the square induction coil 160 is It can be easily broken.

In addition, when the square induction coil 160 is installed to be spaced apart from the outer surface of the boiler body 100 by a distance of 150 mm or more, the medium frequency induced current of the square induction coil 160 is applied to the outer surface of the boiler body 100 Since it is not transmitted properly, it cannot be properly heated to the lower side of the outer surface of the boiler body 100, and accordingly, instantaneous heating of the heat medium oil becomes impossible.

Therefore, as in the present invention, it is most preferable that the square induction coil 160 is spaced apart from the lower outer surface of the boiler body 100 at a distance of 20 to 150 mm and installed in a spiral shape.

Subsequently, a steam discharge pipe 120 is communicated through a steam valve 121 to one side of the upper portion of the boiler body 100, so that the steam generated by heating the heat medium oil inside the boiler body 100 is It is smoothly discharged through the steam discharge pipe 120 by the operation of the valve 121 so that it can be used as heating steam or the like.

In addition, as shown in FIG. 1, on the other side of the boiler body 100 opposite to the upper steam discharge pipe 120, an air discharge pipe 130 is communicated through a separate air valve 131, and the boiler When the heating medium oil is introduced into the body 100 and steam is generated by heating, the air inside the boiler body 100 can be smoothly discharged through the air discharge pipe 130, and at this time, the air valve 131 is opened and closed. A water level meter 150 is installed on one side of the air discharge pipe 130 through a steam connection pipe 151 to turn off the air valve 131 to allow steam to flow into the water level meter 150, The heat medium oil level and steam pressure inside the boiler body 100 are measured to maintain the most appropriate heat medium oil level and steam pressure inside the boiler body 100.

On the other hand, a steam inlet pipe 152 below the water level meter 150 is in communication with the lower portion of the boiler body 100, so that the steam introduced into the water level meter 150 through the steam connection pipe 151 is the steam. It is allowed to flow into the lower side of the boiler body 100 through the inlet pipe 152.

On the other hand, as shown in FIG. 3, in a state in which a power supply unit 180 and a control unit 190 for speech are installed at one side of the heat medium oil heating unit 140, a medium-frequency current is generated inside the control unit 190. A high-voltage capacitor coil 191 is installed to supply a medium-frequency current to the square induction coil 160 of the heat medium oil heating unit 140, and a capacitor 210 is provided on one side of the high-voltage capacitor coil 191 that generates the medium-frequency current. ) Is connected and installed, so that the current generated in the high-voltage capacitor coil 191 can be easily charged.

In addition, as shown in Figure 4, the spiral square induction coil 160, which is a heating unit 140 installed at the lower periphery of the boiler body 100 to heat the heat medium oil, has a cooling water through hole ( 161) The cooling water inlet and outlet pipes 201 and 202 through which the cooling water flows in and out of the inside are respectively communicated and communicated with the cooling water tank 200 through the circulation valve 203, so that the spiral square induction coil 160 ), the cooling water of a constant temperature always flows through the cooling water through-hole 160, which prevents overheating of the square induction coil 160, while allowing a stable medium-frequency current to flow, and accordingly, the square induction coil and It is possible to prevent damage to the device in advance.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the specific embodiments described above. That is, a person of ordinary skill in the technical field to which the present invention pertains can make a number of changes and modifications to the present invention without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications It should be considered that equivalents are also within the scope of the present invention.

100...boiler body 110...water pipe
111... water valve 112... water pump
120...steam outlet pipe 121...steam valve
130...air outlet line 131...air valve
140...heating part 150...water level gauge
151...steam connector 152...steam inlet pipe
160...induction coil 161...coolant through hole
170...coil stand 180...power supply
190...control section 191...high voltage capacitor coil
200...coolant tank 201...coolant inlet pipe
202...coolant outlet pipe 210...capacitor

Claims (4)

A boiler body 100 through which a water supply pipe 110 through which the heat medium oil of the water supply unit flows is connected to the water supply valve 111 and the water supply pump 112 to the lower side of the interior;
A steam discharge pipe 120 communicated so that steam is discharged through a steam valve 121 to an upper side of the boiler body 100;
An air discharge pipe communicated so that the air inside the boiler body 100 is discharged when steam is generated by inflow and heating of the heat medium oil inside the boiler body 100 through the air valve 131 to the other side of the boiler body 100 (130);
Includes; a heating unit 140 installed at the lower periphery of the boiler body 100 to heat the heat medium oil supplied therein,
At one side of the air discharge pipe 130 that is opened and closed as the air valve 131, a steam connection pipe 151 is communicated to discharge a part of the steam inside the boiler body 100, and at the end of the steam connection pipe 151, a boiler A water level meter 150 is installed to check the heat medium oil level inside the body 100, and the steam flowing into the water level meter 150 through the steam connection pipe 151 is re-boiler on the lower side of the water level meter 150. The steam inlet pipe 152 flowing into the lower side of the main body 100 is communicated, and the heat medium oil heating unit 140 installed at the lower periphery of the boiler main body 100 is cooled by flowing cooling water for preventing overheating. A square induction coil 160 in which the cooling water through hole 161 is formed is installed in a spiral shape on the lower outer surface of the boiler body 100 at a predetermined interval (t) to be supported and fixed to the coil support 170, while the heating medium oil heating unit ( At one side of 140), a power supply unit 180 and a control unit 190 are installed, and a high-voltage capacitor coil 191 for generating a medium-frequency current is installed inside the control unit 190, and the heat medium oil heating unit 140 It is addressed to supply a medium-frequency current to the square induction coil 160 of the square, and at the lower and upper ends of the square induction coil 160, the cooling water inlet and outlet pipes 201 ( Medium frequency induction heating boiler, characterized in that consisting of a configuration in which 202 is communicated with each other and communicated with the cooling water tank 200 through the circulation valve 203.
The method of claim 1,
The square induction coil 160 of the heating medium oil heating unit 140, which is spirally installed on the lower periphery of the boiler body 100, is made of copper (Cu) having excellent thermal conductivity, and the square induction coil 160 The middle frequency induction heating boiler, characterized in that the boiler body 100 is made of carbon steel so as to prevent damage due to high heat, in which the lower side of the outer surface is heated to a high temperature by the medium frequency current of.
The method of claim 1,
The square induction coil 160 is a medium-frequency induction heating boiler, characterized in that the outer surface of the boiler body 100 is spaced apart from the outer surface of the boiler body 100 at intervals of 20 to 150 mm and installed in a spiral shape.

The method of claim 1,
A medium-frequency induction heating boiler, characterized in that a capacitor 210 is connected to one side of a high-voltage capacitor coil 191 that generates a medium-frequency current in the power supply unit 180 and the control unit 190.

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