WO2014098282A1

WO2014098282A1 - Condensing hot water boiler

Info

Publication number: WO2014098282A1
Application number: PCT/KR2012/011163
Authority: WO
Inventors: 최성환; 최진민; 이동호
Original assignee: Choi Sung-Hwan
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2014-06-26

Abstract

The present invention relates to a condensing hot water boiler comprising: a combustion chamber casing having a combustion chamber for combusting fuel; a burner arranged on the combustion chamber casing so as to ignite fuel; a blower for supplying air to the combustion chamber; a heat exchange casing arranged beneath the combustion chamber so as to perform heat exchange between the flames and combustion gas introduced from the combustion chamber and hot water; and a hot water coil arranged to cover the inner wall of the combustion chamber casing such that the hot water supplied from the heat exchange casing is introduced to the inside of the hot water coil so as to enable a heat exchange with the flames and combustion gas in the combustion chamber.

Description

Condensing Hot Water Boiler

The present invention relates to a hot water boiler, and more particularly, to a condensing hot water boiler to increase the heat exchange efficiency by disposing a hot water coil inside the firebox.

In general, heating and hot water boilers used in homes are divided into oil boilers and gas boilers according to the fuel used. Among these, gas boilers with low air pollution and easy use are mainly used, and liquefied natural gas (LNG) is used as the fuel. Gas boilers can be divided into various types according to the control method or sealed state, and can be classified into condensing and non-condensing types according to the heat source for heating hot water.

Such hot water boilers have been disclosed in Korean Patent No. 430882.

1 is a perspective view illustrating a configuration of a conventional condensing hot water boiler 10. As shown, the conventional condensing hot water boiler 10 is provided with a fire chamber 13 in which fuel combustion occurs in an upper portion of the outer casing 10a, and an association 15 in which heat exchange with hot water occurs in a lower portion of the fire chamber 13. Is provided.

In the conventional condensing hot water boiler 10, when the temperature inside the fire chamber 13 rises and the pressure increases, the pressure is not uniformly applied to the whole fire chamber 13, so that a relatively weak part is crushed when the internal pressure rises. There was a problem.

In addition, the conventional condensing hot water boiler 10 is exhausted after the heat exchange occurs in the flame 15 and the combustion gas of the combustion chamber 13, there is a problem that there is not enough heat exchange does not have a lot of heat loss.

An object of the present invention is to provide a condensing hot water boiler that can withstand the high pressure inside the firebox.

Another object of the present invention is to provide a condensing hot water boiler which can improve heat exchange efficiency by increasing the heat transfer area of the firebox having the highest flame temperature.

Still another object of the present invention is to provide a condensing hot water boiler that can continuously maintain heat exchange efficiency by maximizing the flow of the fluid in the firebox part having a high water temperature to prevent foreign matter from adsorbing.

The object of the invention can be achieved by a condensing hot water boiler. The condensing hot water boiler of the present invention comprises: a firebox casing in which a firebox in which combustion of fuel occurs is formed; A burner provided at an upper portion of the fire chamber casing to ignite fuel; A blower for supplying air to the firebox; A heat exchange casing disposed under the flame casing and performing heat exchange between the flame and combustion gas introduced from the flame chamber and hot water; It is formed to surround the inner wall surface of the firebox casing, characterized in that it comprises a hot water coil in which the hot water supplied from the heat exchange casing flows into the inside and the heat exchange with the flame and combustion gas inside the firebox.

According to one embodiment, the plurality of associations vertically and vertically disposed inside the heat exchange casing and the flame and combustion gas flowing from the fire chamber flows; And an upper hard plate and a lower hard plate for supporting the association to stand in the heat exchange casing.

According to an embodiment, the firebox casing and the heat exchange casing are detachably coupled to each other, and further include a connection pipe for supplying hot water of the heat exchange casing to the hot water coil inside the firebox casing.

In the condensed hot water boiler according to the present invention, the heat exchange capacity is increased because the hot water is directly heat exchanged with the flame of the highest temperature after the association and heat exchange. Therefore, the size of the entire heat exchanger can be reduced.

In addition, the hot water coil is formed in the form of a circular pipe to withstand the internal pressure.

In addition, in the case of the low-temperature hot water heat exchanger, the heat exchange capacity may be reduced by adsorbing foreign substances such as lime components on the portion where the water temperature is high and the flow of hot water is stagnant. Since the flow rate of hot water is maximized inside the firebox casing, foreign matter is not adsorbed and heat exchange efficiency can be maintained continuously.

In addition, the condensing hot water boiler according to the present invention, since the firebox casing and the heat exchange casing are detachably coupled, the partial replacement is easy and the repair and maintenance are advantageous.

1 is a perspective view showing the configuration of a conventional condensing hot water boiler,

2 is a perspective view showing an external configuration of the condensing hot water boiler according to the present invention;

3 is a cross-sectional view showing a cross-sectional configuration of the condensing hot water boiler according to the present invention,

4 is a perspective view showing a coupling structure of the condensing hot water boiler according to the present invention;

5 is an exploded perspective view illustrating the internal configuration of the condensing hot water boiler according to the present invention.

2 is a perspective view showing an external configuration of the condensing hot water boiler 100 according to the present invention, Figure 3 is a cross-sectional view showing the internal configuration of the condensing hot water boiler 100 according to the present invention, Figure 4 and Figure 5 is an exploded perspective view showing the decomposition of the condensing hot water boiler 100 according to the present invention.

The condensing hot water boiler 100 according to the present invention is formed by two

casings

110 and 130 detachably coupled to each other. The heat exchange casing unit 120 is disposed inside the heat exchange casing 110 disposed at the lower portion, and the hot water coil 140 at the flame chamber casing 130 disposed at the upper portion is provided with a flame and heat exchange in the fire chamber 137. do.

The upper part of the chamber casing 130 is provided with a burner 160 for ignition of the fuel and a blower 170 for supplying oxygen for combustion to the burner 160.

The heat exchange casing 110 is disposed below the fire chamber casing 130. The heat exchange casing 110 is formed in a cylindrical tube shape of which the upper and lower portions are open. The surface of the heat exchange casing 110 is provided with a direct inlet 111 for introducing hot water into the inside, and a direct outlet 113 for allowing hot water to flow out to the firebox casing 130.

The hot water introduced into the direct inlet 111 is moved into the firebox casing 130, circulated along the hot water coil 140, and discharged to the outside.

The heat exchange casing 110 is detachably coupled to the fire chamber casing 130. To this end, a plurality of lower coupling rings 115 are provided at the top of the heat exchange casing 110. The lower coupling ring 115 is formed at a position corresponding to the upper coupling ring 135 formed on the fire chamber casing 130 to fasten a fastening member (not shown).

The heat exchange connection unit 120 is provided inside the heat exchange casing 110 to allow heat exchange between the flame, combustion gas, and hot water moved from the fire chamber 137. The heat exchange connection unit 120 is a sensible heat latent heat integrated heat exchanger using sensible heat and latent heat of combustion gas. The heat exchange connection unit 120 includes a plurality of associations 125 and a lower hard plate 121 and an upper hard plate 123 that support the association 125 to stand vertically inside the heat exchange casing 110.

The tube 125 is provided with a hollow tube having an open top and bottom, and is disposed in communication with the fire chamber 137. The flame and combustion gas of the fire chamber 137 flow through the open upper surface of the pipe 125. The hot flame and combustion gas moving along the inside of the pipe 125 are in heat exchange with the hot water surrounding the pipe 125.

In the upper hard plate 123, a flame inlet hole 123a through which the flame of the flame casing 130 and the combustion gas flows into the tube 125 is formed at a position corresponding to the tube 125. Flame outlet holes (not shown) are formed through the lower hard plate 121 at the same position.

The fire chamber casing 130 is disposed above the heat exchange casing 110. The fire chamber casing 130 is detachably coupled with the heat exchange casing 110. The upper coupling ring 135 is provided at the bottom of the fire chamber casing 130. The detachable structure of the firebox casing 130 and the heat exchange casing 110 may facilitate repair and replacement of parts when a failure occurs.

The outer circumferential surface of the fire chamber casing 130 is provided with a hot water inlet 131 through which hot water flows into the inside, and a hot water outlet 133 through which hot water flows out.

The burner 160 is provided at an upper portion of the fire chamber casing 130. An internal combustion chamber 137 is formed in which combustion of the fuel ignited by the burner 160 occurs.

The hot water coil 140 is provided on the inner wall surface of the firebox casing 130. The hot water coil 140 is formed in a form of winding a metal pipe several times. The hot water coil 140 has a hot water inlet pipe 141 formed at one end thereof is connected to the hot water inlet 131 of the firebox casing 130, and a hot water outlet pipe 143 formed at the other end of the hot water inlet 130 of the firebox casing 130 ( 133).

The hot water coil 140 is provided on the inner wall of the fire chamber casing 130 to improve the heat transfer area of the hot water. According to the length of the hot water coil 140 is wound on the firebox casing 130, the heat transfer area of the hot water may be increased up to 60%. The hot water flowing inside the hot water coil 140 may directly absorb heat from the flame and combustion gas having the highest temperature, thereby increasing heat exchange efficiency.

In addition, since the temperature inside the firebox 137 is distributed evenly regardless of the region, the hot water flowing through the hot water coil 140 absorbs heat evenly without temperature variation. Therefore, since the temperature deviation of hot water is small, the water pressure of hot water is also kept constant.

Therefore, the water pressure applied to the hot water coil 140 circularly wound on the inner wall surface of the firebox casing 130 is also kept constant, thereby preventing partial damage of the firebox casing 130.

The hot water coil 140 may be formed to be wound in one layer or wound in multiple layers on the inner wall surface of the firebox casing 130 as shown.

On the other hand, the heat exchange casing 110 and the fire chamber casing 130 is moved directly by the connection pipe 150. The connection pipe 150 has one end connected to the direct outlet 113 of the heat exchange casing 110, and the other end connected to the hot water inlet pipe 131 of the fire chamber casing 130. In this case, each of the firebox casing 130, the heat exchange casing 110, and the connection pipe 150 is connected to each other by assembling a bracket (not shown) to prevent leakage by applying a sealing agent.

The operation of the condensing hot water boiler 100 according to the present invention having such a configuration will be described with reference to FIGS. 2 to 5.

The hot water flows through the heat exchange casing 110 through the direct inlet 111 of the heat exchange casing 110. The hot water inside the heat exchange casing 110 is introduced into the hot water coil 140 of the firebox casing 130 through the direct outlet 113 and the connection pipe 150.

When burner 160 is ignited and blower 170 starts to operate, combustion of fuel is started in firebox 137. Flame and combustion gas are generated in the fire chamber 137 by the combustion of fuel.

The flame and the combustion gas are moved to an associated pipe 125 connected to the bottom of the fire chamber 137, and heat exchange with hot water surrounding the pipe 125 occurs. The hot water, which has undergone heat exchange with the combustion gas inside the plumbing 125, is moved to the hot water coil 140 of the firebox casing 130 and is quickly heated by the high temperature flame and the combustion gas and discharged to the outside.

As described above, in the condensed hot water boiler according to the present invention, the heat exchange capacity is increased because the hot water is directly heat exchanged with the flame at the highest temperature after the association and heat exchange. Therefore, the size of the entire heat exchanger can be reduced.

In addition, the hot water coil is formed in the form of a pipe surrounding the inner wall of the firebox casing and is designed to withstand a pressure of 30 kg / cm ² .

The embodiment of the condensing hot water boiler of the present invention described above is merely illustrative, and it is well understood that various modifications and equivalent other embodiments are possible to those skilled in the art to which the present invention pertains. You will know. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims.

Claims

In the condensing hot water boiler,

A firebox casing in which a firebox in which fuel combustion occurs is formed;

A burner provided at an upper portion of the fire chamber casing to ignite fuel;

A blower for supplying air to the firebox;

A heat exchange casing disposed under the flame casing and performing heat exchange between the flame and combustion gas introduced from the flame chamber and hot water;

Condensing hot water boiler characterized in that it comprises a hot water coil is formed to surround the inner wall surface of the fire chamber casing and the hot water supplied from the heat exchange casing flows into the inside and the heat exchange with the flame and combustion gas inside the fire chamber.
The method of claim 1,

A plurality of plumbings disposed vertically vertically in the heat exchange casing and in which flame and combustion gas flowing from the fire chamber flow;

Condensing hot water boiler characterized in that it comprises an upper plate and a lower plate to support the association to stand in the heat exchange casing.
The method of claim 2,

The firebox casing and the heat exchange casing are detachably coupled to each other,

Condensing hot water boiler characterized in that it further comprises a connection pipe for supplying hot water of the heat exchange casing to the hot water coil inside the firebox casing.