KR102595553B1 - Hot water boiler equipped with steam reducer - Google Patents

Abstract

The present invention relates to a hot water boiler equipped with a steam reducer.
According to an embodiment of the present invention, it is a hot water boiler that heats the heating pipe with a burner, raises the temperature of the circulating water, and discharges it into the boiler pipe. A steam reducer is installed in the circulating water tank to reduce steam in the circulating water. Accordingly, a hot water boiler equipped with a steam reducer configured to improve the circulation of circulating water discharged into the boiler tube is disclosed.

Description

Hot water boiler equipped with steam reducer}

The present invention relates to a hot water boiler equipped with a steam reducer. It is a hot water boiler in which heat is applied to a heating tube with a burner and the temperature of the circulating water is raised to be discharged into the boiler tube. A steam reducer is installed in the circulating water tank to reduce the temperature of the circulating water to the boiler tube. It relates to a hot water boiler equipped with a steam reducer configured to improve the circulation power of the circulating water by reducing the steam in the circulating water discharged.

In general, a boiler device is configured to heat heating water with a heat source obtained by using a heater fueled by gas or oil, and to provide heating by circulating this heated water along a circulation pipe. This boiler device is configured to provide heating. It is mainly installed in houses and various buildings to provide heating.

Recently, as camping culture has spread, the spread of portable boiler devices that can easily heat outdoors is also spreading.

As an example of prior art taking this into account, the Republic of Korea Patent No. 10-1195436 (registered on October 23, 2012), previously filed by the present applicant, is a spiral coil-type main body unit without a separate electrical circulation power source such as a circulation pump. It is a hot water boiler that increases the temperature of the circulating water by applying heat to the built-in heating pipe and discharges it through the boiler tube. The circulation power of the circulating water is improved by separating the gas and liquid in the circulating water and discharging them, and the upper opening increases the circulation power of the circulating water. We proposed a hot water boiler that can increase thermal efficiency by having a heat shield that covers part or all of the heat shield, and a heat exhaust path is formed by separating the upper and lower heating pipes by a predetermined gap.

In the prior art, a gas-liquid separation tank that separates the gas (steam) and liquid in the circulating water is installed between the upper heating pipe and the backflow prevention valve of the circulating water discharge part, and the gas is prevented from being mixed into the circulating water, thereby preventing the circulating water from being mixed into the circulating water. Contains a structure that increases circulation.

The gas-liquid separation tank of the prior art consists of a hollow tank with a predetermined space and is installed inside the circulating water tank, and temporarily slows down the flow rate of the circulating water flowing in from the upper heating pipe to remove the gas contained in the circulating water. It is configured to float to the top of the gas-liquid separation tank and collect there.

However, in order to increase the gas-liquid separation effect, it is advantageous to increase the size and/or height of the gas-liquid separation tank, but the gas-liquid separation tank of the prior art had limitations in increasing the size and height due to limitations in the internal volume and height of the circulating water tank. , this made it difficult to increase the gas-liquid separation effect.

In addition, if the gas-liquid separation effect was not sufficient, the possibility of steam mixing into the circulating water increased, so there was a limitation that it was difficult to increase the heating temperature of the circulating water.

Republic of Korea registered patent 10-1195436 (registered on October 23, 2012) Republic of Korea registered patent 10-1832665 (registered on February 20, 2018) Republic of Korea registered patent 10-2064702 (registered on January 3, 2020)

The present invention was developed in consideration of the above-described conventional problems. It is a hot water boiler that applies heat to a heating tube with a burner, raises the temperature of the circulating water, and discharges it into the boiler tube. A steam reducer is installed in the circulating water tank. The purpose is to provide a hot water boiler equipped with a steam reducer configured to improve the circulation power of the circulating water by reducing the steam in the circulating water discharged to the boiler tube.

According to one aspect of the present invention for achieving the above object, a heating tube through which circulating water flows in and is heated and discharged to a burner; A circulating water supply unit including a supply pipe for supplying the circulating water stored in the circulating water tank to the heating pipe, and a backflow prevention valve provided in the supply pipe to prevent the circulating water supplied to the heating pipe from flowing back into the circulating water tank. ; It is connected to one end of the boiler tube, the other end of which is connected to the circulating water tank, a discharge pipe for discharging the circulating water heated and discharged from the heating tube to the boiler tube, and a discharge pipe for discharging the circulating water supplied to the boiler tube to flow back into the heating tube. a circulating water discharge unit including a backflow prevention valve provided in the discharge pipe to prevent the discharge; And it is installed inside the circulating water tank, and is provided with a hollow main body between the heating pipe and the circulating water discharge part, installed laterally across the inside of the main body, and has both ends communicating with the inside of the circulating water tank. It includes a steam reducer installed with an open heat exchange pipe, and is configured to exchange heat between the circulating water passing through the main body of the steam reducer and the circulating water stored inside the circulating water tank through the heat exchange pipe. A hot water boiler equipped with a steam reducer is disclosed.

Preferably, the main body portion of the steam reducer is arranged in parallel in the transverse direction with an upper plate portion and a lower plate portion having a gap, and a circularly curved side plate portion has a cylindrical shape joined between the upper plate portion and the lower plate portion, and the upper plate portion An discharge hole for circulating water passing through the main body of the steam reducer is formed, and an inlet hole is formed in the lower plate to allow circulating water to flow from the heating pipe into the main body of the steam reducer. The heat exchange pipe is installed horizontally through the side plate and across the main body, and has both ends exposed to the outside of the side plate so as to communicate with the inside of the circulating water tank.

Preferably, the main body part of the steam reducer has a middle plate portion disposed horizontally and parallel to the gap between the upper plate portion and the lower plate portion to separate the inner space of the main body upper and lower, and the middle plate portion contains circulating water flowing into the lower space. A circulating water passage hole is formed that allows the water to flow into the upper space.

Preferably, the heat exchange pipe is installed in both the upper space and the lower space of the middle plate part.

Preferably, two or more middle plate parts are provided, and the two or more middle plate parts are arranged in parallel in the horizontal direction so as to have a gap between the upper plate part and the lower plate part to further separate the inner space of the main body upper and lower.

Preferably, in the main body of the steam reducer, the discharge hole of the upper plate and the circulating water passage hole of the middle plate located on the lower side are formed at opposite positions with respect to the center side of the main body, and the circulating water of the middle plate passes through. The hole and the inflow hole of the lower plate located below are formed at opposite positions relative to the center of the main body.

Preferably, the present invention includes the burner generating a flame; And the heating pipes through which circulating water flows in and is heated and discharged are stacked in a spiral manner to form a side wall, and a heat shield plate is provided to cover at least a portion of the upper opening of the side wall, and is installed to transmit the heat of the flame to the inner space of the side wall. It is composed of a spiral coil type main body.

Preferably, the present invention includes a box-shaped boiler casing made of a metal plate, wherein the burner is installed on one side of the inside of the boiler casing, the spiral coil-type body part is installed on an upper side of the burner, and the boiler casing The circulating water tank is installed on the other transverse side of the inside, and the circulating water supply part, circulating water discharge part, and steam reducer are installed inside the circulating water tank.

Preferably, the upper surface of the boiler casing located on the upper side of the circulating water tank is composed of a cover that can be opened and closed, and a metal container storing fuel for the burner is placed on the upper side of the circulating water tank in the open state of the cover, so that the fuel for the burner is stored in the winter season. It is configured to enable warming up of the metal container.

Preferably, the burner receives fuel stored in a metal container through a fuel supply pipe and is provided with a main valve for adjusting the flame size during use of the burner, and between the main valve and the metal container, the flame size of the burner is adjusted. An auxiliary valve is provided to limit and set the upper limit.

This invention has the advantage of improving the circulation power of the circulating water discharged into the boiler tube by installing a steam reducer in the circulating water tank of the hot water boiler to reduce steam in the circulating water.

1 is an overall configuration diagram of a hot water boiler according to an embodiment of the present invention;
Figure 2 is a perspective view of a steam reducer of a hot water boiler according to an embodiment of the present invention;
Figure 3 is a perspective view of a steam reducer of a hot water boiler according to another embodiment of the present invention;
Figure 4 is a configuration diagram of the main elements of the hot water boiler according to an embodiment of the present invention with the boiler casing removed;
Figure 5 is a perspective view of a hot water boiler according to an embodiment of the present invention;
Figure 6 is a schematic diagram showing an example of a heat shield plate of a hot water boiler according to an embodiment of the present invention.

The present invention can be implemented in various other forms without departing from its technical spirit or main features. Accordingly, the embodiments of the present invention are merely examples in all respects and should not be construed as limited.

Terms such as first, second, etc. are used only for the purpose of distinguishing one component from another component. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected to or connected to the other component, but other components may also exist in between.

As used in this application, singular expressions include plural expressions, unless the context clearly dictates otherwise. In this application, terms such as “comprise”, “provide”, “have”, etc. are intended to express the presence of the components described in the specification or a combination thereof, but do not indicate the possibility that other components or features may be present or added. It is not excluded in advance.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

Figure 1 is an overall configuration diagram of a hot water boiler according to an embodiment of the present invention, Figure 2 is a perspective view of a steam reducer of a hot water boiler according to an embodiment of the present invention, and Figure 3 is a schematic diagram of a steam reducer according to another embodiment of the present invention. A perspective view of the steam reducer of a hot water boiler. Figure 4 is a schematic diagram of the main elements of a hot water boiler according to an embodiment of the present invention with the boiler casing removed. Figure 5 is a perspective view of a hot water boiler according to an embodiment of the present invention. , Figure 6 is a schematic diagram showing an example of a heat shield plate of a hot water boiler according to an embodiment of the present invention.

The hot water boiler of this embodiment includes a burner (B) that generates a flame, and includes a spiral coil-type main body portion (100), a circulating water supply portion (200), a circulating water discharge portion (300), and a steam reducer (400). It is composed by:

For example, the burner B is configured to include a typical burner structure that uses liquefied gas stored in a metal container F as fuel and controls combustion using a rotary fuel control lever BN. The unexplained symbol FL is a fuel supply pipe that supplies fuel from the metal container (F) to the burner (B), and the symbol FF is an arrow indicating the flow of fuel.

Preferably, the burner (B) receives fuel stored in a metal container (F) through a fuel supply pipe (FL) and is provided with a main valve (V1) to adjust the flame size during use of the burner (B). . Additionally, an auxiliary valve (V2) is provided between the main valve (V1) and the metal container (F) to limit the upper limit of the flame size of the burner (B).

For example, if the opening degree of the auxiliary valve (V2) is set to a specific degree using the control knob (BN2), the upper limit of the fuel flow rate supplied to the burner (B) through the fuel supply pipe (FL) and the main valve (V1) is set to a specific level. It may be limited to that extent. In this state, even if the rotary fuel control lever (BN), which controls the opening degree of the main valve (V1), is operated to the maximum opening degree, the fuel flow exceeding the opening degree set in the auxiliary valve (V2) is not supplied to the burner (B), resulting in the size of the burner flame. is limited to a state with a specific upper limit. If the burner is burned at maximum flame for a long time without limiting the size of the flame, there is a risk of damage to the hot water boiler due to excessive evaporation of circulating water (W) due to overheating. This risk can be prevented through the above configuration. This configuration is particularly useful when using the hot water boiler of this embodiment for a camping car.

The spiral coil-type main body 100 is a part for increasing the temperature of the circulating water (W) by heating it with the heat of the flame of the burner (B).

For example, the spiral coil-type main body portion 100 has heating tubes 110 through which circulating water (W) flows in and is heated and discharged to a burner (B), forming a side wall, and an upper opening of the side wall. A heat shield plate 120 is provided that covers at least a portion of (O) and is installed to transmit the heat of the flame to the internal space of the side wall.

For example, the heating tube 110 includes a lower heating tube 112 forming a lower side of the side wall and an upper heating tube 114 forming an upper side of the side wall, and the upper heating tube 114 and the The lower heating pipes 112 are spaced apart by a predetermined gap to form a heat exhaust passage 110a.

When the upper heating tube 114 and the lower heating tube 112 are spaced apart by a predetermined gap to form a heat exhaust passage 110a, the upper heating tube 114 may be heated more intensively than the lower heating tube 112. Therefore, the temperature difference for circulation of circulating water can be more easily secured without an electrical power source such as a circulation pump. As a modified example, it is of course possible to configure the heating pipe 110 in a form without a heat exhaust path as shown in FIG. 6.

As an example, at least some sections of the heating tube 110 may be stacked in multiple layers to form multiple side walls (Figure 1), and as another example, the heating tube 110 may be stacked in a single layer to form a single side wall. can also be configured (Figure 6).

When at least some sections of the heating tube 110 are stacked in multiple layers to form a plurality of side walls, the amount of circulating water intensively heated within the heating tube 110 is stacked in one layer to form a single side wall. It is approximately twice as many cases.

In addition, as at least some sections of the heating pipe 110 are configured to be stacked in multiple layers, the amount of circulating water discharged once to the discharge pipe 310 increases compared to a single layered structure, and as a result, the discharge pipe 310 The number of valve operations of the backflow prevention valve 320 provided in 310 and the resulting frequency of valve operation noise can be reduced.

For example, the heat shield 120 may be formed in a closed form to cover the entire upper opening O formed by the upper heating pipe 114. As another example, referring to FIG. 6, a heat outlet 120h that discharges heat from the flame may be formed through the heat shield plate 120.

By the heat shield 120 that covers part or all of the upper opening (O) formed by the upper heating tube 114, the heat of the flame forms the upper opening (O) formed by the upper heating tube 114. It is possible to stay in the space for a predetermined period of time, and thus the circulating water (W) in the upper heating pipe 114 can be heated intensively.

The circulating water (W) heated by the flame is discharged through the discharge pipe 310 at regular intervals as the pressure increases, and the amount of circulating water (W) filled in the upper heating pipe 114 is approximately at intervals of several seconds. It is released repeatedly.

The unexplained symbol 110-3 is a discharge side portion of the heating pipe 110 that sends the heated circulating water (W) from the heating pipe 110 to the circulating water discharge unit 300 installed inside the circulating water tank 600, The unexplained symbol 110-2 refers to the inflow side part of the heating pipe 110 that sends the circulating water (W) that needs to be heated from the circulating water supply unit 200 installed inside the circulating water tank 600 to the coil part of the heating pipe 110. am.

The circulating water supply part 200 is a part for supplying circulating water (W) to the spiral coil type main body part 100.

The circulating water supply unit 200 includes a supply pipe 210 for supplying the circulating water (W) stored in the circulating water tank 600 to the heating pipe 110, and the circulating water supplied to the heating pipe 110 ( It includes a backflow prevention valve 220 provided in the supply pipe 210 to prevent W) from flowing back into the circulating water tank 600.

For example, as shown in FIG. 1, the end of the circulating water inlet side of the supply pipe 210 on which the backflow prevention valve 220 is installed is submerged in the circulating water (W) stored in the circulating water tank 600 and flows downward. It is formed to face, and the middle part of the supply pipe 210 extends from the end of the circulating water inflow side and points upward, then curves in a "∩" shape and goes downward again. The connection portion of the supply pipe 210 connected to the heating pipe 110 penetrates the lower surface of the circulating water tank 600 and is connected to the inflow side portion 110-2 of the heating pipe 110. For example, the backflow prevention valve 220 provided in the supply pipe 210 may be configured as a lift check valve.

According to this configuration, when negative pressure is generated in the heating pipe 110 of the spiral coil-type main body 100, the backflow prevention valve 220 is opened and the circulating water (W) contained in the circulating water tank 600 flows back. It flows into the supply pipe 210 through the open passage of the prevention valve 220 and can be supplied to the heating pipe 110 of the spiral coil-type main body 100. For example, negative pressure within the heating tube 110 may be generated when circulating water (W) within the heating tube 110 is discharged through the circulating water discharge unit 300.

The circulating water tank 600 is a part where circulating water (W) is stored, and the circulating water supply unit 200, the circulating water discharge unit 300, and the steam reducer 400 are installed inside the circulating water tank 600. ) is provided.

The circulating water tank 600 is formed in a cylindrical structure with an open top, and a removable upper cover 610 is provided at the open top. At least one water vapor outlet (not shown) is formed in the upper cover 610, and water vapor generated in the circulating water tank 600 can be discharged through the water vapor outlet.

In addition, a plurality of through holes (not shown) are formed in the upper cover 610, and both ends of the boiler tube 700 can be positioned inside the circulating water tank 600 through the through holes.

The circulating water discharge unit 300 is a part that discharges the heated circulating water (W) from the spiral coil-type main body 100 to the boiler tube 700, and is provided in the discharge pipe 310 and the discharge pipe 310. It is configured to include a backflow prevention valve 320.

In more detail, the circulating water discharge unit 300 is connected to one end (700a) of the boiler tube 700, the other end (700b) of which is connected to the circulating water tank 600, and is heated in the heating tube 110. A discharge pipe 310 for discharging the discharged circulating water (W) into the boiler pipe 700 and preventing the circulating water (W) supplied to the boiler pipe 700 from flowing back into the heating pipe 110. It includes a backflow prevention valve 320 provided in the discharge pipe 310.

The end of the discharge pipe 310 on the circulating water discharge side is formed to face upward. The symbol 204 in FIG. 1 is an installation pipe for fixing the other end 700b of the boiler tube 700 to the upper end of the supply pipe 210, and the symbol 204a is an installation pipe for returning through the other end 700b of the boiler tube 700 after heating. It is a discharge hole for discharging circulating water (W) into the circulating water tank (600). The symbol P is a welding portion, and the other end (700b) of the boiler tube (700) is connected to the upper end of the supply pipe (210) by the welding portion (P). Only the installation location is fixed, and the circulating water flow path is not connected.

The backflow prevention valve 320 may be configured as a lift check valve, for example.

With this configuration, as the pressure of the spiral coil-type main body 100 increases due to heating of the burner B, the check valve 320 is opened, and the heating in the spiral coil-type main body 100 occurs. The circulating water (W) flows into the boiler tube 700 through the open passage of the backflow prevention valve 320, and the circulating water (W) flowing into the boiler tube 700 is used to heat the heating object (HS, e.g., It provides a heating effect by circulating along the boiler tube 700 installed in the hot water mat.

In more detail, one end (700a) of the boiler tube 700 is connected to the discharge end of the discharge pipe 310, and the other end (700b) is connected to the circulating water tank 600, and the boiler tube 700 is connected to the discharge side end of the discharge pipe 310. As the circulating water circulates along (700) and exchanges heat, heating is performed, and the heated circulating water returns to the circulating water tank (600).

The steam reducer 400 does not exchange heat between the relatively high temperature circulating water (W) flowing inside the discharge pipe 310 and the relatively low temperature circulating water (W) stored inside the circulating water tank 600. In this way, it liquefies the steam that may be contained in the circulating water (W) inside the discharge pipe 310 and provides a function to suppress steam from being included in the circulating water (W) supplied to the boiler pipe 700.

Steam generated by overheating during the heating process of the heating pipe 110 may be mixed into the circulating water W inside the discharge pipe 310. The steam reducer 400 prevents such steam from being mixed into the boiler tube 700. Through this, steam is not included in the circulating water (W), and the circulation power of the circulating water can be further increased.

For this purpose, the steam reducer 400 is installed inside the circulating water tank 600, and has a hollow main body portion 402 between the heating pipe 110 and the circulating water discharge portion 300. is provided, and a heat exchange pipe 404 is installed horizontally across the interior of the main body 402 and has both ends 404a and 404b open to communicate with the inside of the circulating water tank 600. The number of heat exchange pipes 404 is not particularly limited, but can be installed in the range of 1 to 4.

The hot water boiler of this embodiment exchanges heat between the circulating water (W) passing through the inside of the main body 402 of the steam reducer 400 and the circulating water (W) stored inside the circulating water tank 600. It is configured to exchange heat through the pipe 404.

That is, steam may be generated when the circulating water (W) is heated to a high temperature in the heating pipe 110, and the steam reducer 400 is submerged in the circulating water (W) stored in the circulating water tank 600. As heat is sufficiently exchanged with the circulating water (W) of the circulating water tank 600, which has a lower temperature, through the heat exchange pipe 404, the circulating water in the discharge pipe 310 is prevented from rising above a certain temperature, thereby preventing the generation of steam. It can be suppressed. Heat exchange between circulating water is centered around the heat exchange tube 404, but some heat exchange can also be achieved through the main body 402 of the steam reducer 400 made of metal.

According to the present inventor's experiment, based on the circulating water tank 600 of the same size, when using a simple cylindrical gas-liquid separation tank of the prior art, the circulating water (W) stored in the circulating water tank 600 is 60 When heated to about ℃, steam is generated in the discharge pipe 310, so there is a limit to heating the circulating water (W) to a temperature higher than that. However, when using the steam reducer 400 in the form of FIG. 2, the circulating water tank ( It was confirmed that steam was not generated in the discharge pipe 310 even when the temperature of the circulating water (W) stored in 600) was heated to about 85°C.

In addition, the main body 402 of the steam reducer 400 is a hollow tank with a predetermined space and temporarily slows the flow rate of the circulating water (W) flowing in from the circulating water heat exchange pipe 400, As a result, the gas contained in the circulating water (W) floats to the top of the main body portion 402 and collects. As the gas collects at the top within the main body 402, the liquid from which the gas is separated collects below it.

Through the above configuration, the circulating water (W) is supplied to the backflow prevention valve 320 of the circulating water discharge unit 300 in a state in which gas and liquid are separated in the gas-liquid separation tank 310c.

Therefore, when the circulating water (W) is discharged from the main body 402 in a state in which gas is collected at the top within the main body 402, the gas is discharged first and the liquid is discharged followed by the gas and liquid. It can be supplied to the boiler tube 700 in a separated state through the non-return valve 320.

The gas separated and discharged from the main body 402 flows into the circulating water tank 600 through the boiler tube 700 and then through a water vapor outlet (not shown) formed on the upper cover (not shown) of the circulating water tank. It is discharged through.

As described above, the hot water boiler of this embodiment uses the steam reducer 400 to suppress the generation of steam (gas) in the discharge pipe 310 as much as possible, and at the same time, some unintentionally generated gas is suppressed in the main body ( 402), gas and liquid are prevented from being mixed in the circulating water (W), so that the circulation power of the circulating water (W) can be further increased.

The hot water boiler of this embodiment includes a box-shaped boiler casing 10 made of metal plate.

The burner (B) is installed on one side of the inside of the boiler casing (10), and the spiral coil-type main body portion (100) is installed on the upper side of the burner (B).

The circulating water tank 600 is installed on the other transverse side of the boiler casing 10, and the circulating water supply unit 200, the circulating water discharge unit 300, and the steamer are installed inside the circulating water tank 600. Winding 400 is installed.

The unexplained symbol H is a through hole formed in the boiler casing 10, the symbol 15 is a separation plate for separating the burner side and the circulating water tank 600 side, and the symbol 10a is provided on the upper side of the circulating water tank 600. It is an openable cover of the boiler casing 10, and the symbol HG is a hinge that secures the openable cover 10a to the boiler casing 10 in an openable manner. Exhaust gas and hot air can be discharged through the upper through hole (H), and combustion air can be introduced through the lower through hole (H).

Since the boiler casing 10 of this embodiment is made of metal plate and has a box shape, heat from the burner is transmitted to the upper surface, thereby increasing the temperature of the upper surface. If you place food or tea that needs to be heated or kept warm on the upper surface, the exhaust heat from the burner can be efficiently recycled without being discarded into the atmosphere.

Preferably, the upper surface of the boiler casing 10 located on the upper side of the circulating water tank 600 is composed of a cover 10a that can be opened and closed, and when the cover 10a is opened, the circulating water tank 600 The metal container (F) storing the fuel of the burner (B) is placed on the upper side to enable warming up of the metal container (F) in winter. For example, with the cover 10a open, the metal container F may be placed on the upper cover 610 of the circulating water tank 600. Since circulating water (W) heated to about 60 to 80 ℃ is stored inside the circulating water tank (600), it is possible to provide a sufficient warming-up effect of the metal container (F) in the winter, and for this reason, a separate warmer is installed in the metal container. It has the advantage of not having to be attached to (F).

A rotary fuel control lever (BN) is exposed on the front side of the boiler casing 10, and a control knob (BN2) is exposed on the rear side, and one end (700a) and the other end (700b) of the boiler tube (700), fuel The supply pipe (FL) is installed so that it penetrates.

The steam reducer of this embodiment will be described in detail.

The main body portion 402 of the steam reducer 400 is arranged in parallel in the horizontal direction with an upper plate portion 402a and a lower plate portion 402b having a gap, and a circularly curved side plate portion 402c is It is configured to have a cylindrical shape joined between the upper plate portion 402a and the lower plate portion 402b.

A discharge hole 402d for circulating water (W) passing through the inside of the main body 402 of the steam reducer 400 is formed in the upper plate 402a, and the heating pipe 110 is formed in the lower plate 402b. An inlet hole 402e is formed through which circulating water (W) flows into the main body 402 of the steam reducer 400. The discharge hole 402d of the circulating water (W) is connected to the discharge pipe 310, and the inlet hole 402e of the circulating water (W) is connected to the discharge side portion 110-3 of the heating pipe 110.

The heat exchange pipe 404 of the steam reducer 400 is installed transversely through the side plate portion 402c and across the main body portion 402, and both ends (404a, 404b) are connected to the circulating water tank. (600) It is configured to be exposed to the outside of the side plate portion 402c so as to communicate with the inside.

According to the above configuration, processing and assembly of the upper plate portion 402a, lower plate portion 402b, side plate portion 402c, and heat exchange pipe 404 are easy, and ease of manufacturing of the steam reducer 400 can be ensured.

In addition, since the steam reducer 400 of this embodiment is manufactured in a compact cylindrical shape, it has the advantage of being easy to connect and assemble with other elements in a narrow space inside the circulating water tank 600.

Preferably, the main body part 402 of the steam reducer 400 is arranged horizontally and parallel to the gap between the upper plate part 402a and the lower plate part 402b to separate the inner space of the main body part 402 into upper and lower sides. It is configured to have a middle plate portion 402f.

A circulating water passage hole 402g is formed in the middle plate portion 402f through which the circulating water W flowing into the lower space flows into the upper space.

Preferably, the heat exchange pipe 404 is installed in both the upper space and the lower space of the middle plate portion 402f.

In addition, in the main body part 402 of the steam reducer 400, the discharge hole 402d of the upper plate part 402a and the circulating water passage hole 402g of the middle plate part 402f located on the lower side are connected to the main body part ( 402) are formed at positions opposite to each other based on the center side (CL).

In addition, the circulating water passage hole 402g of the middle plate portion 402f and the inflow hole 402e of the lower plate portion 402b located on the lower side are located on opposite sides with respect to the center side CL of the main body portion 402. is formed in

If this configuration is adopted, the flow length of the circulating water (W) flowing through the main body portion 402 of the steam reducer 400 is secured as long as possible, thereby maximizing the heat exchange effect.

That is, the circulating water (W) inside the main body 402, which has undergone primary heat exchange with the circulating water (W) of the circulating water tank 600, moves to the upper space through the heat exchange pipe 404 in the lower space, and moves to the upper space. Since the circulating water (W) inside the main body 402 is discharged to the top after further secondary heat exchange with the circulating water (W) of the circulating water tank 600 through the heat exchange pipe 404 in the space, this embodiment The example steam reducer 400 can achieve a high heat exchange effect despite the limited size of the main body 402.

In particular, in this process, the circulating water (W) inside the steam reducer 400 flows along a zigzag flow path, making the flow length longer compared to the external size of the main body 402 and further improving the heat exchange effect. You can.

Through such sufficient heat exchange, the circulating water in the discharge pipe 310 is prevented from rising above a certain temperature, and the generation of steam can be effectively suppressed.

As a modified example, two or more intermediate plate portions 402f may be provided.

In this case, two or more middle plate portions 402f and 402f' are arranged in parallel in the horizontal direction so as to have a gap between the upper plate portion 402a and the lower plate portion 402b, thereby further expanding the inner space of the main body portion 402 upward and downward. Separate.

Through this multi-layer spatial configuration, the steam reducer 400 of this embodiment can further lengthen the flow length and further increase the heat exchange effect.

Although the present invention has been described with a focus on preferred embodiments with reference to the accompanying drawings, it is clear to those skilled in the art that many various and obvious modifications can be made from this description without departing from the scope of the present invention. Accordingly, the scope of the present invention should be interpreted by the stated claims to include these many modifications.

10: Boiler casing
100: Spiral coil type main body
110: Heating tube
110a: Heat exhaust furnace
112: Lower heating pipe
114: Upper heating pipe
120: Heat barrier plate
200: Circulating water supply unit
210: supply pipe
220: Backflow prevention valve
300: Circulating water discharge unit
310: discharge pipe
320: Backflow prevention valve
400: Steam reducer
402: main body
404: heat exchange tube
600: Circulating water tank
700: Boiler tube
B: burner
B1: Flame nozzle
B2: Fuel supply flow path
O: opening
W: circulating water

Claims (10)

A heating pipe through which circulating water flows in and is heated and discharged to the burner;
A circulating water supply unit including a supply pipe for supplying the circulating water stored in the circulating water tank to the heating pipe, and a backflow prevention valve provided in the supply pipe to prevent the circulating water supplied to the heating pipe from flowing back into the circulating water tank. ;
It is connected to one end of the boiler tube, the other end of which is connected to the circulating water tank, a discharge pipe for discharging the circulating water heated and discharged from the heating tube to the boiler tube, and a discharge pipe for discharging the circulating water supplied to the boiler tube to flow back into the heating tube. a circulating water discharge unit including a backflow prevention valve provided in the discharge pipe to prevent the discharge; and
It is installed inside the circulating water tank, and is provided with a hollow main body between the heating pipe and the circulating water discharge part. It is installed horizontally across the inside of the main body, and has both ends so as to communicate with the inside of the circulating water tank. It includes a steam reducer installed with an open heat exchange pipe,
It is configured to exchange heat between the circulating water passing through the main body of the steam reducer and the circulating water stored inside the circulating water tank through the heat exchange pipe,
The main body of the steam reducer is arranged in parallel in the horizontal direction with an upper and lower plate having a gap, and a side plate has a cylindrical shape joined between the upper and lower plates, and the upper plate has a main body of the steam reducer. An outlet hole for circulating water passing through the interior is formed, and an inlet hole is formed in the lower plate portion to allow circulating water to flow from the heating pipe into the main body of the steam reducer,
The heat exchange pipe of the steam reducer is installed horizontally through the side plate and across the main body, and has both ends exposed to the outside of the side plate so as to communicate with the inside of the circulating water tank. Hot water boiler equipped with a reducer.
According to paragraph 1,
A hot water boiler with a steam reducer, wherein the main body of the steam reducer is configured to have a cylindrical shape with a circularly curved side plate joined between the upper plate and the lower plate.
According to claim 1 or 2,
The main body portion of the steam reducer has a middle plate portion disposed horizontally and parallel to the gap between the upper plate portion and the lower plate portion to separate the inner space of the main body portion upwards and downwards, and the middle plate portion distributes circulating water flowing into the lower space into the upper space. A hot water boiler equipped with a steam reducer, characterized in that a passage hole for circulating water to flow is formed.
According to paragraph 3,
A hot water boiler with a steam reducer, wherein the heat exchange pipe is installed in both the upper space and the lower space of the middle plate part.
According to paragraph 3,
The middle plate portion is provided with two or more,
A hot water boiler equipped with a steam reducer, characterized in that two or more middle plates are arranged in parallel in the horizontal direction with a gap between the upper plate and the lower plate to further separate the internal space of the main body upper and lower.
According to paragraph 3,
In the main body of the steam reducer,
The discharge hole of the upper plate and the circulating water passage hole of the middle plate located on the lower side are formed at opposite positions relative to the center of the main body,
A hot water boiler with a steam reducer, wherein the circulating water passage hole of the middle plate and the inlet hole of the lower plate located on the lower side are formed at opposite positions with respect to the center of the main body.
A burner that generates a flame;
Heating tubes through which circulating water flows in and is heated and discharged to the burner are stacked in a spiral manner to form a side wall, and a heat shield plate is provided to cover at least a portion of the upper opening of the side wall, and the heat of the flame is transmitted to the internal space of the side wall. Spiral coil type main body installed as much as possible;
A circulating water supply unit including a supply pipe for supplying the circulating water stored in the circulating water tank to the heating pipe, and a backflow prevention valve provided in the supply pipe to prevent the circulating water supplied to the heating pipe from flowing back into the circulating water tank. ;
It is connected to one end of the boiler tube, the other end of which is connected to the circulating water tank, a discharge pipe for discharging the circulating water heated and discharged from the heating tube to the boiler tube, and a discharge pipe for discharging the circulating water supplied to the boiler tube to flow back into the heating tube. a circulating water discharge unit including a backflow prevention valve provided in the discharge pipe to prevent the discharge;
It is installed inside the circulating water tank, and is provided with a hollow main body between the heating pipe and the circulating water discharge part. It is installed horizontally across the inside of the main body, and has both ends so as to communicate with the inside of the circulating water tank. Steam reducer equipped with open heat exchange pipes; and
It includes a box-shaped boiler casing made of metal plate,
It is configured to exchange heat between the circulating water passing through the main body of the steam reducer and the circulating water stored inside the circulating water tank through the heat exchange pipe,
The burner is installed on one side of the inside of the boiler casing, and the spiral coil-type main body is installed on the upper side of the burner,
The circulating water tank is installed on the other side of the inner lateral direction of the boiler casing, and the circulating water supply unit, circulating water discharge unit, and steam reducer are installed inside the circulating water tank,
The upper surface of the boiler casing located on the upper side of the circulating water tank is composed of a cover that can be opened and closed, and in the open state of the cover, a metal container storing fuel for the burner is placed on the upper side of the circulating water tank to store the metal container in the winter. A hot water boiler equipped with a steam reducer configured to enable warming up.
delete delete According to claim 1 or 7,
The burner receives fuel stored in a metal container through a fuel supply pipe and is equipped with a main valve to adjust the flame size during use of the burner,
A hot water boiler with a steam reducer, characterized in that an auxiliary valve is provided between the main valve and the metal container to limit the upper limit of the flame size of the burner.

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