WO2002042693A1

WO2002042693A1 - Boiler

Info

Publication number: WO2002042693A1
Application number: PCT/KR2001/002008
Authority: WO
Inventors: Chung-Ki Lee
Original assignee: Lee Chung Ki
Priority date: 2000-11-23
Filing date: 2001-11-22
Publication date: 2002-05-30
Also published as: AU2002221153A1; KR20020034811A

Abstract

There is provided a boiler (1), constructed in such a manner that a primary combustion chamber (2) is formed at the center of the boiler (1) according to a primary water chamber (3) having an approximate cylindrical shape; a secondary water chamber (5) is formed, surrounding the primary water chamber (3), to form secondary combustion chamber (6); a guide plate (8) is set at the position where a heat source is injected from a burner (7) in the primary combustion chamber (2) to guide the heat source to a screw (9) having a plurality of veins (96) for guiding the heat source; and a plurality of guide plates (11) are formed having a predetermined interval on the outside wall of the primary water chamber constructing the secondary combustion chamber (6), the guide plates (11) being inclined downward. Therefore, heat transfer effect is maximized and fuel expense is reduced.

Description

BOILER

Technical Field

The present invention relates to a boiler, and more particularly to a boiler which has divided primary and secondary combustion chambers and primary and secondary water chambers to allow flames passing through the primary and secondary combustion chambers to be discharged to a duct while revolving, thereby improving combustion efficiency, maximizing heat transfer effect and extending the life span of the boiler.

Background Art

A conventional boiler is constructed in a manner that a heat source (that is, flames) fired by a burner vertically rises to transfer thermal energy of the combustion heat to water contained in a water chamber set above a combustion chamber through the water chamber or a spiral water pipe, thereby heating a room and supplying hot water.

In the above-described conventional boiler, the combustion heat stays in the combustion chamber for a short period of time so that its heat energy cannot be sufficiently transmitted to the water. In addition, a large amount of heat energy is emitted to the air through a duct to waste thermal energy, resulting in increase in fuel expense.

Furthermore, the heat source fired by the burner in the combustion chamber is injected from a heat-source discharge hole in only one direction all the time so that the heat is not uniformly diffused throughout the combustion chamber. Thus, low temperature corrosion generates in a low temperature region where the heat does not reach, shortening the life span of the boiler.

Disclosure of the Invention

Accordingly, the present invention is directed to a check valve that substantially obviates one or more problems due to limitations and disadvantages of the related art. Therefore, an object of the present invention to provide a boiler constructed in such a manner that flames (heat source) fired by a burner when the boiler is being operated to be uniformly diffused inside a combustion chamber to be discharged through a duct while staying inside the boiler for a long period of time, to thereby maximize heat transfer effect and reduce fuel expense.

The objectives and other advantages of the invention may be realized and attained by 'the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Brief Description of the Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

Fig. 1 is a vertical cross-sectional view showing a preferred embodiment of the present invention;

Fig. 2 is a horizontal cross-sectional view showing a preferred embodiment of the present invention;

Fig. 3 is a perspective view of a screw applied to the present invention; and

Fig. 4 is a perspective view of a horizontal boiler to which the present invention is applied.

Best Mode for Carrying Out the Invention

The present invention will now be described in connection with preferred embodiments with reference to the accompanying drawings. Fig. 1 is a vertical cross-sectional view showing a preferred embodiment of the present invention, and Fig. 2 is a horizontal cross-sectional view showing a preferred embodiment of the present invention.

Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Similar reference numerals identify corresponding parts.

Referring to Figs. 1 and 2, a boiler 1 in accordance with the present invention is constructed in such a manner that a primary water chamber 3 is formed in an approximate cylindrical shape so as to construct a primary combustion chamber 2 at the center of the boiler, and a secondary water chamber 5 in a tank shape is formed above the primary water chamber 3 using a plurality of pipes 4, surrounding the primary combustion chamber 2 and the primary water chamber 3. A cylindrical secondary combustion chamber 6 is constructed between the secondary water chamber 5 and the primary water chamber 3. A burner 7 is placed under the primary combustion chamber 2 to ignite and inject heat source into the primary combustion chamber 2. A guide plate 8 is formed, being opposite to the heat source being injected from the burner, so that the heat source can freely rotate at one side of the guide plate 8 to be guided to a screw 9 set inside the primary combustion chamber by using a shaft. The screw 9 can have a plurality of veins 9b with various shapes at the shaft 9b thereof. The veins 9b can be designed in various forms with regard to the capacity of the primary combustion chamber 2, including the shape shown in Fig. 3.

In addition, the upper part of the primary combustion chamber 2 and the secondary combustion chamber 6 placed outside the first primary water chamber 3 are connected with each other through openings 10 formed between the pipes 4 connecting the primary and secondary water chambers 3 and 5 to each other.

Furthermore, a plurality of guide plates 1 1 for extending the length of stay of the heat source are formed at the side of the secondary combustion chamber 6 so that the heat source can be guided downward to be discharged through a duct 12. The guide plates 1 1 have a predetermined inclination downward in order to guide the heat source downward.

Moreover, the screw 9 applied to the boiler 1 of the invention can be formed in a horizontal boiler 1 a shown in Fig. 4 as well as the vertical boiler of Figs. 1 and 2. In this case, the screw performs the same performance as does in the vertical boiler. The guide plates 8 and 1 1 and screw 9 can be selectively set in boilers having other functions. In Figs. 1 and 2, reference numeral 14 represents a water inflow pipe, ad 15 denotes a water discharge pipe. The boiler 1 of the invention constructed as above ignites the burner 7 and provides water to the primary and secondary water chambers 3 and 5 to heat a room and supply hot water as conventional boilers do. The characteristic operation of the boiler 1 of the invention is explained below in detail. When the boiler 1 of the invention is operated to ignite the burner 7 to fire a heat source with a high temperature, the heat source is guided by the guide plate 8 placed inside the primary combustion chamber 2 toward the screw. Then, the heat source reach the veins 9b formed at the lower part of the screw 9 so that the screw 9 rotates according to the pressure of the heat source. In doing so, the heat source rises while continuously revolving according to the plurality of veins 9b formed at the screw 9 in the primary combustion chamber 2.

In the procedure of revolving rise of the heat source, the heat source uniformly comes into contact with the inner wall of the primary combustion chamber 2 which corresponds to the outside of the primary water chamber 3 to transfer heat, and it rises with the maximized period of time of stay to enter the secondary cylindrical combustion chamber 6 placed between the primary and secondary water chambers 3 and 5 through the openings 10 formed between the plurality of pipes 4 connecting the primary and secondary water chambers 3 and 5 to each other. Then, the heat source is guided by the plurality of guide plates 1 1 formed at the outside wall of the primary water chamber 3 to descend while revolving to come into contact with the walls of the primary and secondary water chambers 3 and 5, sufficiently transferring heat energy thereof to the walls. Finally, the heat source is discharged through the duct 12.

Industrial Applicability According to the present invention, as described above, the vertical or horizontal boiler 1 or 1 a is constructed in a manner that the combustion chamber and the water chamber are respectively divided into primary and secondary parts, the heat source fired by the burner 7 rises while revolving with the help of the guide plate 8 and screw 9 in the primary combustion chamber 2, and then it is guided to the secondary combustion chamber 6 to descend while revolving by the plurality of guide plates 11 to be discharged to the duct 12. This configuration maximizes the period of time of stay of the heat source to increase heat transfer effect. Furthermore, the heating source can be uniformly transferred to the primary and secondary water chambers to extend the durability of the boiler and fuel expense is reduced.

The forgoing embodiments are merely exemplary and are not to be construed as limiting the present invention. The present teachings can be readily applied to other types of apparatuses. The description of the present invention is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art.

Claims

What is claimed is :

1 . A boiler, constructed in such a manner that a primary combustion chamber is formed at the center of the boiler according to a primary water chamber having an approximate cylindrical shape; a secondary water chamber is formed, surrounding the primary water chamber, to form secondary combustion chamber, the secondary water chamber being connected with the primary water chamber through a plurality of pipes 4 having opening therebetween, placed above the primary water chamber, the secondary combustion chamber being connected with a duct; a guide plate is set at the position where a heat source is injected from a burner in the primary combustion chamber to guide the heat source to a screw having a plurality of veins for guiding the heat source, the screw being axially set in the primary combustion chamber; and a plurality of guide plates are formed having a predetermined interval on the outside wall of the primary water chamber constructing the secondary combustion chamber, the guide plates being inclined downward.

2. The boiler as claimed in claim 1 , wherein the screw revolves and guides the heat source of the burner set in the combustion chamber of a horizontal boiler.