KR20010089038A - Flue tube­water tube type hot water boiler - Google Patents

Abstract

PURPOSE: A flue tube and water tube boiler is provided to reduce the volume of a boiler and increase heat efficiency, while allowing water to be rapidly heated. CONSTITUTION: A plate type heating reservoir(3) is arranged around the lower portion of a boiler body(1) with a flue tube(2). First and second heat exchange chambers(4,5) are arranged to communicate with each other above the flue tube and the heating reservoir. The first heat exchange chamber includes a first U-shaped heat exchange tube(7), and a second U-shaped heat exchange tube(8) longer than the first U-shaped heat exchange tube is arranged to communicate with the first U-shaped heat exchange tube. The first and second U-shaped heat exchange tubes are arranged at the uppermost portion of the first heat exchange chamber and a second high temperature heat exchange chamber. An exhaust passage(9) is arranged in the rear of the flue tube and the first heat exchange chamber, in such a manner that the exhaust passage is perpendicular to the flue tube. A plate type radiant heating reservoir(10) is arranged in a vertical direction to communicate with the heating reservoir, and a flame chamber(11) and a smoke exhaust chamber(12) are formed in the front and rear of the radiant heating reservoir. Water tubes(13) are installed in the flame chamber and the smoke exhaust chamber, in such a manner that the water tubes are arranged to be parallel with the radiant heating reservoir and to communicated with the heating reservoir.

Description

Furnace Water Pipe Type Hot Water Boiler {FLUE TUBE­WATER TUBE TYPE HOT WATER BOILER}

The present invention relates to a furnace tube water-type hot water boiler, and more particularly, to an furnace tube water-type indirect heated hot water boiler.

Typical hot water boilers used in large groups such as bathrooms or hotels are discarded after using hot water heated in heated water tanks in the equipment. Therefore, a large amount of water must be supplied. Indirect heating furnace tube-related hot water boilers are widely used to reduce the above-mentioned obstacles, because they generate obstacles such as deterioration of the heat transfer efficiency of the boiler and shorten the life due to the generated capstone, corrosion, and the like.

An example of the indirect heating furnace-associated hot water boiler is disclosed in 1982 Utility Model Application Publication No. 928, the indirect heating furnace-related hot water boiler forms a pain in the lower portion of the heating water tank, An association is formed between the rear upper part of the furnace and the return chamber by forming a return chamber at the front upper part of the furnace, and a link between the return chamber and the collecting chamber formed outside of the heating water tank is provided. It is formed so that the header is formed on one side over the entire length of the upper part of the heating water tank, and a heat exchanger having a u-type heat exchanger tube installed in the tube plate.

The indirect heating furnace-related hot water boiler burns fuel in the furnace and heats the heat medium such as water filled around the furnace with its radiant flame, reheats the heat medium by the combustion gas discharged from the furnace, and then passes through the collecting chamber. While discharging as a stack, cold water is supplied to a heat exchanger and heated by heat exchange with the heated heating medium to be supplied to a bathroom or a user equipment.

However, since the indirect heating furnace-associated hot water boiler has a large amount of heat medium and the radiant heat transfer surface is only the furnace and the heating water tank behind it, it takes a long time from the start of combustion to the generation of hot water in the heat exchanger, and the thermal efficiency is low. And, in general, the indirect heating furnace-related hot water boiler is installed in the basement of the building bar, because the hot water boiler is bulky, because it is impossible or difficult to transport the finished door to the basement with a small door, the site in the state of parts There is a problem that the leak test is complicated and costly because it is transported and assembled on site.

The present invention corrects the above problems, and forms a plate-shaped heating water tank around the lower part of the boiler body in which the furnace is formed in the front lower portion, and at the same time, forms a heat exchanger chamber in communication with the heating water tank in the upper portion of the furnace. And an exhaust passage is formed at an upper portion at a right angle with the furnace at the rear of the furnace and the heat exchanger chamber, and vertically installs a plate-shaped radiant heating tank communicating with the heating tank to form a flame chamber and a flue gas chamber at the front and rear thereof. In 1999, Patent No. 43140 filed an indirect water pipe type indirect heating hot water boiler in which a plurality of water pipes in parallel with the radiant heating bath and connected to the heating bath are installed in the flame chamber and the flue gas chamber.

However, the above-mentioned source has the advantage of generating hot water quickly and at the same time improving the thermal efficiency and reducing the volume, so that the construction can be carried on site in the finished product state. When the pressure in the combustion chamber is operated above atmospheric pressure, the maximum temperature of the flame is located at the rear part of the furnace, and in particular, the heating of the front part of the furnace is inadequate, resulting in a problem that the temperature of producing hot water in the heat exchanger is not high. It happens.

The present invention is to correct the above problems, while producing hot water quickly and at the same time to improve the thermal efficiency and to reduce the volume to be transported on-site transported to the finished product on-site construction and at the same time can increase the production temperature of hot water tubular hot water The purpose is to provide a boiler.

In order to achieve the above object, the present invention forms a heating bath around the lower part of the boiler body having a furnace in the front lower portion, and at the same time the heat exchanger chamber and the high temperature heat exchanger chamber on the upper portion of the furnace and the rear upper portion of the heating tank. A second u-type heat exchanger formed in communication with the u-type heat exchanger tube in the heat exchanger chamber and communicating with the u-type heat exchanger tube on the upper portion of the u-type heat exchanger tube and longer than the u-type heat exchanger tube. A pipe is installed to be disposed at the top of the heat exchanger chamber and the high temperature heat exchanger chamber. An exhaust passage is formed at the top of the furnace barrel and the heat exchanger chamber at a right angle to the furnace barrel, and a radiator heat tank vertically connected to the heating tank is installed. A flame chamber and a flue gas chamber are formed in front and rear sides, and a plurality of water pipes parallel to the radiant heating water tank and connected to the heating water tank are formed in the flame chamber and the flue gas chamber. It was installed.

1 is a cross-sectional view of a first embodiment of the present invention;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a side view of the heat exchanger tube plate of the first embodiment of the present invention;

4 is a sectional view of a second embodiment of the present invention.

<Description of the code used in the main part of the drawing>

2: furnace 3: heating water tank 4: heat exchanger chamber 5: high temperature heat exchanger chamber

6: heat exchanger 7: u type heat exchanger tube 8: 2 u type heat exchanger tube

10: radiant heating tank 11: flame chamber 12: flue gas chamber 13: water pipe

1 is a cross-sectional view of the first embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line AA of Figure 1, the lower part of the boiler body (1) having a furnace (2) of a circular or quadrangular to octagonal cross section at the front lower portion While forming a plate-shaped heating water tank (3) around the heat exchanger chamber (4) and the high temperature heat exchanger chamber (5) formed in the upper portion of the furnace (2) and the rear upper portion of the heating water tank (3), The u-type heat exchanger 7 of the heat exchanger 6 is embedded in the heat exchanger chamber 4 and communicated with the u-type heat exchanger tube 7 above the u-type heat exchanger tube 7. (7) A second u-type heat exchanger tube (8) having a longer length is provided and disposed at the top of the heat exchanger chamber (4) and the high temperature heat exchanger chamber (5), and behind the furnace (2) and the heat exchanger chamber (4). An exhaust passage 9 is formed at an upper portion at right angles to the eno cylinder 2, and a plate-shaped radiant heating tank 10 communicating with the heating tank 3 is vertically installed. A flame chamber 11 and a flue gas chamber 12 are formed on the rear side, and the flame chamber 11 and the flue gas chamber 12 are parallel to the radiant heating water tank 10 and communicate with the heating water tank 3. It is by installing the water pipe (13).

In addition, a cleaning tool 14 is formed at an upper position of the radiant heating water tank 10 of the heating water tank 3, and a deposit outlet 15 is formed below the radiant heating water tank 10, and the rear side thereof is formed. At the same time as the refractory material 16 is blocked, a support member 17 composed of a support plate 18 and a support rod 19 is installed at the rear of the refractory material 16 so that the support rod 19 is installed at the rear of the boiler body 1. It is supported by the cover 21 of the cleaning tool 20.

The heat exchanger 6 combines the u-type heat exchanger tube 7 having a length corresponding to the length of the heat exchanger chamber 4 to the tube plate 61 of the header 60 as shown in FIGS. 1 and 3. And the second u-type heat exchange tube 8 is coupled to the upper portion of the coupling position of the u-type heat exchange tube 7 of the tube plate 61, and partition walls 62 and 63 (to the tube plate 61). 64 and 65 are installed to form the inflow chamber 66, the bypass chambers 67, 67 'and 67 ", and the discharge chamber 68, and the inflow chamber 66 and the discharge chamber of the header 69. Cold water flowing into the inlet 69 by installing the inlet 69 and the outlet 70 in the chamber 68 is circulated through the inlet chamber 66, the bypass chambers 67, 67 'and 67 ". When heat is exchanged with the heat medium of the heat exchanger chamber 4 in the heat exchanger tube 7 and heated, the heat medium of the high temperature heat exchanger chamber 6 is circulated when the second u-type heat exchange tube 8 is circulated in the bypass chamber 67 ". After being heated, a zigzag circular circulation path is discharged to the outlet 70.

Reference numerals 22,22 'are sight holes, 23 are expansion tank connections, 24 are drains, 25 are stacks and 26 are burners.

4 is a cross-sectional view of the second embodiment of the present invention, which is different from the first embodiment in that the combustion gas exhaust passage 31 is formed at the lower portion in the center of the flue gas chamber 12 of the first embodiment, and the heating tank 3 ), The plate-shaped second heating water tank (30) communicating with each other) is installed so that the flue gas passages (32) and (33) are formed, and the stack (25 ') is provided above the flue gas passage (33). In FIG. 4, only one second heating water tank 30 is illustrated, but two may be installed to improve waste heat recovery when the pressure in the combustion chamber is high.

In the present invention as described above, the fuel injected from the burner 26 is burned in the furnace (2) so that the radiant flame heats around the furnace (2) and at the same time hits the radiant heating water tank (10) to the flame chamber (11) When changing the direction upward, the radiant heating water tank 6, the water pipe 13 installed in the flame chamber 11, the flame chamber 11 and the ceiling of the flue gas chamber 12 are heated to become combustion gas. By heating the water pipe 13 while passing through the combustion chamber 12 and discharging it into the stack 25, the heat transfer area is greatly enlarged, thereby improving thermal efficiency (in the second embodiment, the second heating water tank is provided in the flue gas chamber 11). Since the 30 is installed, the heat transfer area is enlarged and the combustion gas is heated downward while heating the front and rear surfaces of the second heating water tank 30 while changing the direction below).

On the other hand, the heat medium such as water heated in the periphery of the furnace 2 and the bottom of the high temperature heat exchange chamber 5, which is the ceiling of the radiant heating tank 6, the water pipe 13, the flame chamber 11 and the flue gas chamber 12, Cold water, which is collected in the heat exchanger chamber 4 and the high temperature heat exchange chamber 5 by convection and is supplied through the inlet 69 of the heat exchanger 6, enters the inlet chamber 66 to form a u-type heat exchange tube 19 and When the bypass chambers 67, 67 ', 67 "are circulated in the direction of the arrow and heat-exchanged with the heat medium of the heat exchanger chamber 4, and when the second u-type heat exchange tube 8 is circulated again, the flame chamber ( 11) and heat exchanged with the heat medium in the high temperature heat exchanger chamber 5 heated to a high temperature by the radiant flame heating the ceiling of the flue gas chamber 12, after being heated to high temperature, gathered in the discharge chamber 68 and used through the outlet 70. Places For example, hot water is supplied to group facilities such as baths and hotels.

When soot is deposited on the heat transfer surface during use, the cover of the burner 26 and the cleaning tool 14 and 20 is disassembled to clean the support member 19 supported by the cover 21 of the cleaning device 20. At the same time withdraw the outside through the (20) and the fire retardant (16) that was blocking the sediment outlet 14 is also taken out, inserting a brush or the like into the burner mounting hole, the cleaning opening (14) (20) to the heat transfer surface The deposited sediment is cleaned and collected at the bottom of the furnace (2), flame chamber (11), and flue gas chamber (12), and then drawn out to the outside through a cleaning hole (20). It can be kept good.

The present invention forms a heat exchanger chamber (4) and a high temperature heat exchanger chamber (5) in the upper part of the furnace (2) and the rear upper part of the heating water tank (3) to incorporate the heat exchanger (6), the furnace (2) and the heat exchanger chamber. A radiant heating tank 10 is installed at the rear of the chamber to form a flame chamber 11 and a flue gas chamber 12, and a plurality of water pipes 13 are provided in the flame chamber 11 and the flue gas chamber 12. By installing it, the heat transfer area is dramatically increased, and the heat exchanger 6 is made smaller, and its volume is reduced compared to the conventional one. It can be made at the production site, which can reduce the production and installation costs, shorten the hot water generation time and increase the production temperature.

In addition, since the ceiling of the radiant heating water tank 10, the water pipe 13 installed in the flame chamber 11, the flame chamber 11, and the flue gas chamber 12 is formed as a radiant heat transfer surface, thermal efficiency is greatly improved.

In addition, the present invention forms partition walls (62) (63) (64) (65) on the tube plate (61) of the heat exchanger (6) and installs the u-type heat exchange tubes (7) (8) in a zigzag. It is possible to rapidly generate hot water with high heating temperature while reducing the volume of 6).

In the above-described embodiment, the cross section of the boiler body 1 and the heating water tank 3 is illustrated as being rectangular, but may be formed in a circular or quadrangular to octagonal cross section.

As described above, the present invention can form a smaller volume of the heat exchanger and at the same time increase the heat transfer area, so that the volume of the boiler can be made smaller than that of the conventional one, so that the leak test can be performed at the production site and the finished product can be made in the basement of the building. Since it can be installed in a state, it is possible to reduce the manufacturing and installation costs, and also to significantly increase the radiant heat transfer surface, and to form a high temperature heat exchanger chamber in the ceiling of the flame chamber and the flue gas chamber heated by the radiant flame to form the second u type heat exchanger tube. Since the heat efficiency is increased, the hot water generation time can be shortened and the hot water production temperature can be increased.

In addition, the present invention is simple and convenient cleaning of the heat transfer surface can always be the optimum thermal efficiency management can save fuel.

Claims (1)

A plate-shaped heating bath is formed around the lower part of the boiler body in which the furnace is formed in the front lower part, and a heat exchanger chamber and a high temperature heat exchanger chamber are formed in the upper part of the furnace and the rear upper part of the heating bath so as to communicate with each other. A second u-type heat exchanger tube communicating with the u-type heat exchanger tube and longer in length than the u-type heat exchanger tube is installed at the same time as the u-type heat exchanger of the heat exchanger is built-in. The exhaust passage is formed at the top of the furnace and the heat exchanger chamber at right angles to the furnace and the plate-shaped radiant heating tank communicating with the heating tank is installed vertically to form a flame chamber and a flue gas chamber in front and back. The number of furnaces made by installing a plurality of water pipes parallel to the radiant heating bath and communicating with the heating bath in the flame chamber and the flue gas chamber. Type hot water boiler