KR200463799Y1 - High frequency induction heating type boiler for steam generation - Google Patents

Abstract

The present invention, a water chamber provided in the lower portion; A plurality of heating tubes arranged in a vertical direction while the lower end is in communication with the water chamber is provided in parallel with each other, the heating tubes are integrated by welding with the neighboring heating tubes, the plurality of heating tubes are generally ring-shaped in plan view A heating tube unit having a space closed therein by the heating tubes; A vapor chamber provided on an upper portion of the heating tube unit such that upper ends of the plurality of heating tubes of the heating tube unit communicate with each other; Fireproof material provided while wrapping the outside of the heating tube unit; A high frequency induction heating coil wound spirally along a vertical direction of the refractory material in order to heat the high frequency induction heating of the heating tube unit; A steam discharge pipe connected to the steam chamber; A gas-liquid separator provided in the steam discharge pipe; A water supplement pipe connected to the water chamber; A water recovery tube provided to recover water separated from the gas-liquid separator to the water supplement pipe; Water supply means connected to the water supplement pipe; And a control unit.

Description

High Frequency Induction Heating Boiler for Steam Production {HIGH FREQUENCY INDUCTION HEATING TYPE BOILER FOR STEAM GENERATION}

The present invention relates to a high frequency induction heating boiler for producing steam by converting water into steam using a high frequency induction heating method.

Heat is an essential resource used by humans, and all energy conversion includes the essential concept of heat, and if necessary, the heat may be utilized as a positive aspect to generate higher heat. Therefore, many efforts are being made to suppress the heat generation or to more effectively remove the heat generated by the heat acting as a negative side.

In the case of using fossil fuel for the production of heat, using solar heat, and generating electricity through various methods such as hydro power, tidal power, wind power, and geothermal power generation, electricity is converted into heat again. In some cases, this feature can be said to be an increase in ease of use by more effectively managing the energy source.

Since fossil fuel, environmentally friendly heat or various kinds of energy sources are used for various purposes such as heating, food cooking, and production of various products, it is important to effectively deal with the heat and energy sources to develop into national competitiveness. In recent years, countries that do not have fossil fuels due to the depletion of fossil fuels, which occupy most of the energy sources currently in use, are facing significant difficulties in the long term. It will act as.

In such a situation, effective energy management is an important factor in terms of competitiveness of the company, and in the production of steam, which is the subject of the present invention, a technology for producing steam more efficiently is required.

Here, the heating method to produce the superheated steam, there is a method of using electricity and a method of heating directly using a burner, the method of using electricity is a high frequency induction heating method and a direct heating method using a heating element. have.

The high frequency induction heating method refers to a phenomenon in which a derivative located in the middle of a coil in which a high frequency current flows is rapidly heated by an overcurrent generated by electron induction and some heat loss of hysteresis. Magnetic flux and overcurrent are concentrated on the surface layer of the object by skin action (phenomena that current flows only on the skin of the object) and proximity effect (a phenomenon in which the primary current flowing in the coil is induced in the object to be heated and flows to the surface layer close to the coil). The heat loss generated at this time uses the principle of heating the surface layer of the heating material.

The characteristic of high frequency induction heating is that it is pollution-free and is a method of electric heating based on energy saving. Damage to the product and surrounding pollution in modern society where energy saving, environmental protection, quality equalization and automation are required by 3D avoidance phenomenon. Without this, the product can be heated locally for a short time. High-frequency induction heating is applicable to most metals.

The advantage of high frequency induction heating is that the object to be heated is directly heated, so the thermal efficiency is very good compared to other heating methods such as heat reflection and heat conduction, and the heating power and time are kept constant, so that the heating is always uniform and the bending is extremely In addition, the control of the heating temperature can be easily adjusted by adjusting the heating power supply, and it is characterized by being capable of quick and uniform control of the heating material.

As a boiler for producing steam by high frequency induction heating, Korean Patent Publication No. 10-2009-0105155 "Superheated Steam Boiler" has been proposed.

The prior art is configured to heat the pipe by means of an induction heating coil and thereby convert the water passing through the pipe into steam, but in this configuration, in order to produce steam stably, the amount of water basically supplied is kept very stable. Should be. In addition, such a prior art inevitably produces very poor steam in the early stages of operation because the water is not vaporized properly, or even if it is vaporized is not sufficiently dry steam.

Korean Patent Publication No. 10-2009-0105155 "Superheated Steam Boiler" (published Oct. 7, 2009) Utility Model Registration No. 20-0405016 "Boiler heating device using high frequency induction heating" (December 27, 2005 registration) Patent Registration No. 10-0749043 "High Frequency Induction Heating Boiler" (August 7, 2007 registration)

The present invention is to provide a high frequency induction heating boiler for steam production having a structure that can produce steam more efficiently and stably.

The present invention, in order to solve the above problems, is provided in the lower compartment; A plurality of heating tubes arranged in a vertical direction while the lower end is in communication with the water chamber is provided in parallel with each other, the heating tubes are integrated by welding with the neighboring heating tubes, the plurality of heating tubes are generally ring-shaped in plan view A heating tube unit having a space closed therein by the heating tubes; A vapor chamber provided on an upper portion of the heating tube unit such that upper ends of the plurality of heating tubes of the heating tube unit communicate with each other; Fireproof material provided while wrapping the outside of the heating tube unit; A high frequency induction heating coil wound spirally along a vertical direction of the refractory material in order to heat the high frequency induction heating of the heating tube unit; A steam discharge pipe connected to the steam chamber; A gas-liquid separator provided in the steam discharge pipe; A water supplement pipe connected to the water chamber; A water recovery tube provided to recover water separated from the gas-liquid separator to the water supplement pipe; Water supply means connected to the water supplement pipe; And a control unit.

In the above: In order to form the steam chamber, a through-hole is formed in the center to form a ring, the lower plate is coupled to the heating tubes, the outer wall provided along the outer edge of the lower plate and the lower plate of An inner wall provided upward along an inner edge, and a top plate coupled to the inner wall and the outer wall to cover both the space inside the inner wall and the space between the inner wall and the outer wall; A space between the inner wall and the outer wall is used as the vapor chamber; A space inside the inner wall communicates with an inside space of the heating tube unit through the through hole; A safety valve may be provided at a central portion of the upper plate to prevent excessive increase in pressure of the space inside the inner wall.

In the above, a part of the water replenishment pipe is a water level detecting supplementary pipe that can maintain the same level as the water level of the heating tube, and at least two or more water level detecting sensors are provided at different heights in the water level detecting supplementary pipe. In addition, the water separated in the gas-liquid separator may be recovered to the supplemental pipe for detecting the water level.

As described above, the present invention provides a high frequency induction heating boiler for steam production having a structure that can produce steam more efficiently and stably.

1 is a longitudinal sectional conceptual view of a high frequency induction heating boiler according to one embodiment of the present invention;
FIG. 2 is a sectional view taken along line AA of FIG. 1;
3 is a BB reference cross-sectional view of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. In the drawings, the same reference numerals are used throughout the specification to refer to the same or like parts.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

1 is a longitudinal cross-sectional conceptual view of a high frequency induction heating boiler according to an embodiment of the present invention, FIG. 2 is an A-A reference cross-sectional view of FIG. 1, and FIG. 3 is a B-B reference cross-sectional view of FIG. 1.

Boiler according to an embodiment of the present invention largely consists of a water chamber 110, a heating tube unit 120, a steam chamber 130, a high frequency induction heating coil 140 and the like.

The water chamber 110 is located at the bottom and is formed in a cylindrical shape.

The drain valve 111 is connected to the lower end of the water chamber 110 to completely empty the water of the water chamber 110 for maintenance.

The heating tube unit 120 is provided above the water chamber 110.

The heating tube unit 120 is composed of a plurality of heating tubes 121.

Each heating tube 121 is disposed in the vertical direction while the lower end is in communication with the water chamber (110).

In addition, the plurality of heating tubes 121 are provided in parallel with each other.

In addition, each heating tube 121 is integrated with the neighboring heating tube 121 by welding.

In addition, the plurality of heating tubes 121 may form a ring shape as a whole in plan view, and a closed space 122 may be formed in the plan view by heating tubes 121 therein.

That is, the heating tube unit 120 is formed in the form of a tube extending in the upper direction as a whole.

The steam chamber 130 is provided on the heating tube unit 120.

The steam chamber 130 is provided so that upper ends of the plurality of heating tubes 121 communicate with each other.

The lower plate 131, the outer wall 132, the inner wall 133, and the upper plate 134 are provided to form the steam chamber 130 as described above.

The lower plate 131 is provided in the horizontal direction, but a through hole 131a is formed in the center thereof to form a ring shape as a whole, but is coupled to the heating tubes 121.

The outer wall 132 is provided upward along the outer edge of the lower plate 131, and the inner wall 133 is provided upward along the inner edge of the lower plate 131.

In addition, an upper plate 134 is provided at an upper portion thereof to cover the outer wall 132 and the inner wall 133.

Therefore, the space covered by the upper plate 134 may be divided into a space between the outer wall 132 and the inner wall 133 and a space inside the inner wall 133, and between the double outer wall 132 and the inner wall 133. The space of is used as the steam chamber 130.

In addition, the space inside the inner wall 133 communicates with the closed space 122 of the heating tube unit 120 through the through hole 131a.

In addition, a safety valve 134a is provided at a central portion of the upper plate 134 to prevent an excessive increase in pressure that may occur in a space inside the inner wall 133.

In addition, a pressure sensor 135 is provided to detect the pressure of the steam chamber 130.

Meanwhile, the fireproof material 150 is provided while surrounding the outside of the heating tube unit 120. In the present embodiment, since the heating tubes 121 of the heating tube unit 120 are integrated with each other, the fireproof material 150 may be formed while using the heating tube unit 120 as an inner frame.

As a function of the refractory material 150, and serves to insulate the high-frequency induction heating coil 140 and the heating tube 121 to be described later, and to block heat transfer to the outside of the heating tube unit 120, It also serves to protect the high frequency induction heating coil 140.

A high frequency induction heating coil 140 is provided along the up and down direction of the fireproof material 150. The high frequency induction heating coil 140 is provided to heat the high frequency induction heating unit 140.

In this embodiment, the high frequency induction heating coil 140 is embedded in the refractory material 150. To this end, the fireproof material 150 is first constructed on the outside of the heating tube unit 120, and then the high frequency induction heating coil 140 is constructed, and then the fireproof material 150 is constructed on the outside thereof.

The steam chamber 130 is connected to the steam discharge pipe 160 for discharging the produced steam.

On the other hand, the vapor discharge pipe 160 is provided with a gas-liquid separator 161 to separate the moisture in the steam and to discharge only the dry steam to the outside. As the gas-liquid separator 161, various kinds of cyclone, scrubber, dry screen, baffle, etc. may be used.

In addition, an open / close valve 162 is provided at the end of the steam discharge pipe 160.

In addition, the water chamber 110 is connected to the water supplement pipe 170 to replenish the water, the water supplement pipe 170 is connected to the water advanced means 180, such as the pump 181 and the water tank 182.

In addition, a part of the water replenishment pipe 170, in particular, a part of the water replenishment pipe 170 adjacent to the water chamber 110 is provided in a form capable of maintaining the same water level as the water level of the heating tube 121. It is called a tube 171.

Since the water level detection supplement pipe 171 extends upward from the water chamber 110, the water level of the water level detection supplement pipe 171 always corresponds to the water level of the heating tube 121.

In this embodiment, at least two water level detection sensors are provided at different heights in the water level detection supplement pipe 171.

When the first water level sensor 172 provided at the highest height detects water, the supply of water is stopped, and when the second water level sensor 173 provided at the middle height detects the absence of water, When the third water level sensor 174 provided at the lowest height detects the absence of water, it is recognized as an emergency and stops the operation of the boiler.

In addition, a water recovery tube 190 is provided to recover the water separated from the gas-liquid separator 161 to the water replenishment tube 170, and the lower end of the water recovery tube 190 is connected to the replenishment tube 171 for detecting the water level. do.

On the other hand, the entire device is covered by the heat insulating material 200 to protect the worker and minimize the heat loss.

The operation of this embodiment as described above will be described.

Water is filled in the water chamber 110, and water is supplied even after filling the water chamber 110 to fill up to the middle portion of the heating tube 121 in the vertical direction.

In addition, the driving of the water supply means 180 is controlled so that the water level of the heating tube 121 is located between the first water level sensor 172 and the second water level sensor 173.

The heating tubes 121 are heated by the high frequency induction heating coil 140.

In this case, since the heating tubes 121 are integrated with each other and a closed space 122 is formed therein, the magnetic flux changes generated by the high frequency induction heating coil 140 are all concentrated on the heating tube 121, and thus the efficiency thereof is very high. high.

In addition, the lower portion of the heating tube 121 heated by the high-frequency induction heating coils 140 serves to boil water, and the upper portion of the heating tube 121 further heats the generated steam to dry steam. .

The present invention can always dry steam at least as much as the height of at least the first water level sensor 172 from the top of the heating tube 121, so the quality of the generated steam is very Excellent and stable In particular, the present invention is able to produce a good quality steam even during the initial operation of the device due to such a structure.

In addition, the present invention is the heat generated from the inner surface of the heating tube 121 is used for heating of water or steam, the heat loss from the outer surface of the heating tube unit 120 to the outside is blocked by the refractory material (150). The heat generated inward from the outer surface of the heating tube unit 120 heats the gas in the space between the closed space 122 and the inner wall 133 to minimize the heat loss of the steam chamber 130.

It will be understood by those of ordinary skill in the art that the foregoing description of the present invention has been presented for purposes of illustration and that those skilled in the art will readily understand that various changes in form and details may be made without departing from the spirit and scope of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the utility model registration claims to be described later rather than the detailed description, and all changes or modifications derived from the meaning and scope of the utility model registration claims and their equivalent concepts are included in the scope of the invention. Should be interpreted as

110: water chamber 111: drain valve
120: heating tube unit 121: heating tube
122: closed space
130: steam chamber 131: lower plate
131a: through hole 132: outer wall
133: inner wall 134: top plate
134a: safety valve 135: pressure sensor
140: high frequency induction heating coil
150: fireproof material
160: steam discharge pipe 161: gas-liquid separator
162: on-off valve
170: water supplement pipe 171: water level detection supplement pipe
172: first water level detection sensor 173: second water level detection sensor
174: third level sensor
180: water supply means 181: pump
182: bucket
190: water recovery tube
200: insulation

Claims (3)

A water chamber provided at a lower portion thereof;
A plurality of heating tubes arranged in a vertical direction while the lower end is in communication with the water chamber is provided in parallel with each other, the heating tubes are integrated by welding with the neighboring heating tubes, the plurality of heating tubes are generally ring-shaped in plan view A heating tube unit having a space closed therein by the heating tubes;
A vapor chamber provided on an upper portion of the heating tube unit such that upper ends of the plurality of heating tubes of the heating tube unit communicate with each other;
Fireproof material provided while wrapping the outside of the heating tube unit;
A high frequency induction heating coil wound spirally along a vertical direction of the refractory material in order to heat the high frequency induction heating of the heating tube unit;
A steam discharge pipe connected to the steam chamber;
A gas-liquid separator provided in the steam discharge pipe;
A water supplement pipe connected to the water chamber;
A water recovery tube provided to recover water separated from the gas-liquid separator to the water supplement pipe;
Water supply means connected to the water supplement pipe;
, ≪ / RTI >
In order to form the steam chamber, a through-hole is formed in the center to form a ring, the lower plate coupled to the heating tubes, the outer wall provided along the upper edge along the outer edge of the lower plate, along the inner edge of the lower plate An upper wall coupled to the inner wall and the outer wall to cover both an inner wall provided to an upper portion, and a space between the inner wall and the space between the inner wall and the outer wall;
A space between the inner wall and the outer wall is used as the vapor chamber;
A space inside the inner wall communicates with an inside space of the heating tube unit through the through hole;
A safety valve is provided at a central portion of the upper plate to prevent an excessive increase in pressure of the space inside the inner wall;
High frequency induction heating boiler for steam production.
delete The method of claim 1,
Part of the water replenishment pipe is a water level detection supplement pipe that can maintain the same level as the water level of the heating tube,
At least two water level detection sensors are provided at different heights in the water level detection supplement pipe,
The water separated in the gas-liquid separator is recovered to the water level detection supplement tube
High frequency induction heating boiler for steam production.

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