KR100457904B1 - Flue tube-water tube type hot water boiler - Google Patents

Abstract

The present invention relates to a furnace tubular hot water boiler, and more particularly, to a furnace tubular indirect heated hot water boiler, which can increase the heat transfer area to improve thermal efficiency, increase the amount of hot water produced, or increase its temperature. It is easy to clean the area, it can be operated until repair in case of leakage of heat transfer surface, and it is possible to extend the life.

According to the present invention, the furnace (2) is formed in the front lower portion of the boiler main body (1), and the first heating water tank (3) is formed around the furnace, and the upper portion of the furnace (2) and the first heating water tank (3) is formed. A first heat exchanger chamber (4) and a second heat exchange chamber (5) are formed so that the first heat exchanger (6) and the second heat exchanger (7) are built in, respectively, and the furnace (2) and the first heat exchanger chamber (4). The radiant heating water tank 8 and several second heating water tanks 9, 9 'are formed in the first heating water tank 3 so that exhaust passages 10, 10', 10 " And vertically in communication with each other to form a zigzag flame chamber 11 and a flue gas chamber 12, 12 ', 12 "and at the same time the flame chamber 11 and the flue gas chamber 12, 12'. A plurality of water pipes 13 are installed horizontally in communication with the first heating water tank 3 in the 12 ", and the top and the top of the flame chamber 11 and the flue gas chambers 12, 12 'and 12" are made. A plurality of cleaning holes 14, 14 ′, 14 ″ and deposit outlet 15, 15 ′, 15 ″ are formed in the lower part, and the bottom surface of the flame chamber 11 and the flue gas chamber 12 is formed.It is made by forming recesses 17 and 17 '.

Description

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

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

A typical hot water boiler used for heating or hot water in a group facility such as a bath or a hotel is to supply hot water heated in a heating bath directly to a place of use and then discard waste water or circulate heat exchangers such as radiators and heating coils. When waste water is thrown away, the heat transfer efficiency of the boiler is reduced and lifespan is reduced by the capstone and corrosion generated by impurities such as calcium salt and oxygen contained in the water supply. In order to solve the above drawbacks, indirect heating-type hot water boilers equipped with a separate heat exchanger on top of the hot water boiler have been developed because the heating surface is corroded by the mixing, which shortens the lifespan and cannot produce clean hot water due to rust. It is widely used.

The furnace-related indirect heating 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 at the rear, so the heat transfer area is small, so the hot water generation time is long, the thermal efficiency is low, and the volume is large. It is difficult to transport and install the finished product in the basement with small doors, so it is difficult to carry out the pressure test and complicated by the on-site assembly construction.

In order to correct the above problems, the applicant of the present invention forms a furnace tube in the front lower portion of the boiler body and a first heating bath around the boiler and at the same time forms a heat exchanger chamber in communication with the first heating tank at the top of the furnace tube. And a heat exchanger is built in, and an exhaust passage is formed on the rear of the furnace and the heat exchanger chamber at a right angle with the furnace, and a plate-shaped radiant heating tank communicating with the first heating tank is formed to form a flame chamber and a flue gas chamber in front and rear of the furnace. A combustion gas exhaust passage is formed at the bottom of the flue chamber and a second heating tank communicating with the first heating tank is formed, and the radiant heating tank and the second heating tank are located in the flame chamber and the flue chamber. Patent No. 320,658 proposed a furnace tubular indirect heated hot water boiler with multiple water pipes connected in parallel and connected to a first heating bath. In Patent No. 320,658, a cleaning port is formed at an upper position of a radiant heating tank of the boiler body for cleaning the heat transfer surface, and a deposit outlet is formed below the radiant heating tank to support the rear side as a support member. It is laying cleaning means closed with fireproof material.

However, the above patent has the advantage that the heat efficiency is improved to generate hot water quickly, but since only one heat exchanger is formed by forming a heat exchanger chamber at the top of the furnace, the amount of generated hot water is low or the production temperature is high. Secondly, the sediment outlet formed below the radiant heating tank was closed with a fireproof material supporting the support member.In order to open the sediment outlet when cleaning the heating surface, remove the cover of the cleaning tool, and then remove the support member and the fireproof material. When the heat medium leaks on the third heat transfer surface, the heat medium leaks in the furnace and the flame chamber is stagnated, causing immediate inconveniences for the bather or heating, and fourth, the lower part of the boiler body. And the first heating bath are formed parallel to each other at a predetermined interval. This over-pressure is generated hot water bath to a problem that the bottom surface is deformed by upward the air bubbles stagnant during operation by being added to form the bubble stagnation occurs the pitting life is shortened by such flame chamber occurs.

The present invention can increase the amount of generated hot water or increase its temperature while utilizing the advantages of the patent, it is easy to clean the heat transfer area, can operate until repair in case of leakage of the heat transfer surface, can extend the life It is an object of the present invention to provide a canned water pipe type hot water boiler.

In order to achieve the above object, the present invention provides a first heat exchanger chamber and a second heat exchange chamber in the upper part of the furnace and the first heating bath while forming a furnace in the front lower portion of the boiler body and a first heating bath around the furnace. Each of the first heat exchanger and the second heat exchanger is formed, and the radiant heating bath and several second heating baths are formed in the upper and lower parts of the furnace and the first heat exchanger chamber, respectively. It is installed vertically in communication with each other to form a zigzag flame chamber and flue gas chamber, and at the same time, a plurality of water pipes are installed horizontally in communication with the first heating water tank in the flame chamber and flue gas chamber, and the top and bottom of the flame chamber and flue gas chamber are installed. Several cleaning ports and deposit outlets are formed in the lower part, and recesses are formed in the bottom of the flame chamber and the flue gas chamber.

1 is a longitudinal sectional view of an 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 tube plate of the second heat exchanger of the embodiment of the present invention;

<Description of Signs of Major Parts of Drawings>

3: first heating water tank 4, 5: first and second heat exchange chambers

6, 7: 1st and 2nd heat exchanger 8: Radiant heating water tank

9, 9 ': 2nd heating water tank 11: flame chamber

12, 12 ', 12 ": flue gas chamber 13: water pipe

14, 14 ', 14 ": Cleaning spout 15, 15', 15": Sediment outlet

16: cover 17, 17 ': main part

In the present invention, as shown in Figs. 1 to 3, a furnace (2) having a circular or elliptical cross section is formed at the front lower portion of the boiler body (1), and a first heating water tank (3) is formed around the furnace ( 2) and the first heat exchange chamber 4 and the second heat exchange chamber 5 are formed in the upper portion of the first heating water tank 3 so that the U-shaped first heat exchanger 6 is provided in the first heat exchanger chamber 4. And a second heat exchanger 7 having both ends exposed to the outside of the boiler body 1 in the second heat exchange chamber 5, and having an upper portion behind the furnace 2 and the first heat exchanger chamber 4. The radiant heating water tank 8 and several second heating water tanks 9 and 9 'are formed in communication with the first heating water tank 3 so that the exhaust passages 10, 10' and 10 &quot; Installed vertically to form a zigzag flame chamber 11 and flue gas chambers 12, 12 'and 12 ", and to the flame chamber 11 and flue gas chambers 12, 12' and 12". A plurality of water pipes (13) are installed horizontally in communication with the first heating water tank (3), the In the upper and lower portions of the flame chamber 11 and the flue gas chamber 12, 12 'and 12 ", several cleaning tools 14, 14' and 14" and sediment outlet 15 and 15 '( 15 "and 15", 15 "and 15" are closed by the cover 16 which formed the small hole 16 ', and the flame chamber 11 and the flue gas chamber 12 of FIG. Recesses 17 and 17 'which are inclined forward and backward on the bottom face are formed, and the deposit outlets 15, 15' and 15 'are formed in the recesses 17 and 17'.

The first heat exchanger 6 is provided with an inlet 61 and an outlet 62 in the header 60, and at the same time forms a partition 63 between the inlet 61 and the outlet 62, and forms a tube plate ( 64 is connected to the U-type heat exchanger tube 65 and flanged to the front of the first heat exchanger chamber (4).

The second heat exchanger (7) is the front and rear headers (70, 70 ') which are flanged to be exposed to both sides of the second heat exchanger chamber (5) formed in the first heating water tank (3) of the boiler body (1). A plurality of linear heat exchange tubes 72 are connected between the tube plates 71 and 71 'of the pipe plates, and partition walls 73, 74 and 75 are installed in the front header 70 to diagonally inflow the chambers. 76, the discharge chamber 77 and the bypass chamber (78) (79) are formed at the same time, the inlet chamber (76) and the discharge chamber (77) are provided with an inlet (80) and an outlet (81), the rear header ( 70 ') also forms the rear bypass chambers 82, 83 and 84, and the hot water to be heated is introduced into the inlet chamber 76 through the inlet 80, and then circulated through the heat exchange tube 72 in a zigzag and discharged. It is to be discharged to the outlet 81 via the seal 77.

The first heat exchanger 6 and the second heat exchanger 7 respectively heat the hot water to be heated (cold water) to increase the amount of hot water generated, or the outlet 62 and the second heat exchanger of the first heat exchanger 6. By connecting the inlet 80 of the group 7 to the connecting pipe (not shown) it is possible to re-heat the hot water primarily heated in the first heat exchanger (6) in the second heat exchanger (7).

In addition, for example, the first heat exchanger 6 heats the hot water for hot water supply or heating, and when the hot water for hot water is heated in the first heat exchanger 6 as described above, the second heat exchanger 7 is the hot water for heating. And heat the hot water for heating in the first heat exchanger (6), the second heat exchanger (7) is capable of heating the hot water for public baths, the first and second heat exchangers (6) (7). The use of the hot water to be heated in) is not limited.

Unexplained 18 is year, 19 is sight hole, 20 is expansion tank connection, 21 is cover and 22 is burner.

In the present invention as described above, the fuel injected from the burner 22 is combusted in the furnace (2) so that the radiant flame heats around the furnace (2) and simultaneously strikes the front surface of the radiant heating water tank (8). While switching the radiant heating water tank 8 and the flame chamber 11, the water pipe 13, the first heating water tank 3, the rear of the first heat exchanger chamber 4 and the lower surface of the second heat exchanger chamber 5; After heating the exhaust gas through the exhaust passage 10 and the flue gas chamber 12, 12 ′, 12 ″ to the flue 18, the rear side of the radiant heating bath 8, the second heating bath 9 (9 ') and the lower surface of the water pipe 13, the second heat exchange chamber 5, etc. installed in the (9') and the flue gas chambers 12 (12 ', 12 ") are heated to heat the heat medium, and the heat transfer area is greatly enlarged, resulting in thermal efficiency. This is to be improved.

On the other hand, the heat medium heated as described above is collected in the first and second heat exchange chambers 4 and 5 by convection to the inlets 61 and 80 of the first and second heat exchangers 6 and 7. By supplying hot water (cold water) to be heated, respectively, the first heat exchanger 6 and the second heat exchanger 7 can generate hot water for different uses, thereby increasing the amount of generated hot water, and The heat exchange efficiency is improved by direct heat exchange between the high temperature heat medium gathered in the second heat exchanger chambers 4 and 5 and the hot water to be heated by circulating the first and second heat exchangers 6 and 7 to directly heat exchange. Is to supply directly to the required place of use or to store it in a reservoir and then to the required place of use.

The hot water (cold water) to be heated to the inlet 61 of the first heat exchanger 6 by connecting the outlet 62 of the first heat exchanger 6 and the inlet 80 of the second heat exchanger 7 with a connecting pipe. ) By first heating to the first heat exchanger (6) and then heating it again to the second heat exchanger (7) to further increase the production temperature of the hot water, and the heated water is It is either supplied directly or stored in a water tank and then supplied to the required place of use.

In the present invention, when sold out (soot, ash, etc.) is deposited on the heat transfer surface for a long time operation, the cover of the burner 22 and the cleaning tool 14 (14 ', 14 ") is removed and the deposit outlet ( 15) (15 ') 15 "), remove the cover 16, and connect the connection pipes that open the reservoir to the deposit outlets 15, 15' and 15" and the cleaning tool 14 ( 14 ') (14 ") by inserting a brush or the like to separate and clean the dust deposited on the heat-transfer surface, and when separating the dust is sprayed with high-pressure water at the same time the separated dust and water is the flame chamber 11 and Collecting and disposing of the recesses 17 and 17 'formed on the bottom of the flue gas chamber 12 and the bottom of the flue gas chamber 12 "and collecting and discarding them through storage outlets 15, 15' and 15". Cleaning of the heat transfer surface can be easily and quickly to maintain good efficiency.

In the present invention, if the heat medium leaks from the heat transfer surface during operation, the leaked heat medium gathers at the bottom of the flame chamber 11 and the flue gas chamber 12, 12 "while deposit outlets 15, 15 'and 15" are collected. ) Is discharged to the outside through the small hole 16 'formed in the closed cover 16, so that the leakage of the heat medium can be visually checked during operation, and further, the discharge of the leaked heat medium to the outside causes a great obstacle to the combustion of the fuel. Since it can be operated until repair of the leaked part, it can be heated without any inconvenience such as a bather.

In addition, since recesses 17 and 17 'are formed on the bottoms of the flame chamber 11 and the flue gas chamber 12, the bubble stagnant portion is formed even when the bottom surface of the flame chamber 11 is deformed due to overpressure during the internal pressure test. Since the air bubbles are easily discharged into the expansion tank, it is possible to prevent the point corrosion and extend the life of the boiler.

In addition, in the present invention, the deposit outlets 15 and 15 'are formed in the recesses 17 and 17' formed at the bottom of the flame chamber 11 and the flue gas chamber 12, thereby cleaning the heat transfer surface as described above. In addition, when the thermal medium leaks, the discharge of the deposit or the leaking heat medium becomes good.

As described above, the present invention significantly increases the heat transfer area, thereby improving thermal efficiency, thereby shortening hot water generation time, and heating hot water in two heat exchangers to generate hot water for different purposes and increase hot water generation. Alternatively, by connecting two heat exchangers and heating the hot water twice, it is possible to further increase the hot water producing temperature.

In addition, the cleaning operation of the heat transfer surface is simple and quick, and since the operation can be continued until repair even when the heat medium leaks from the heat transfer surface, there is no inconvenience of a bather and the heating can be continued.

In addition, since the bubble stagnant part is not formed even when the bottom surface of the flame chamber or the like is deformed during the pressure test, the life of the boiler can be extended by preventing the air bubbles from being well discharged.

Claims (4)

The first heat exchanger chamber and the second heat exchange chamber are formed at the top of the furnace body and the first heating water tank at the same time around the boiler body, and at the same time, the first heat exchanger chamber and the second heat exchange chamber are respectively formed. And a radiant heating tank and several second heating tanks are installed vertically in communication with the first heating tank so that exhaust passages are formed at upper and lower sides of the furnace and the first heat exchanger chamber. While forming a flue gas chamber, a plurality of water pipes are horizontally installed in the flame chamber and the flue gas chamber so as to communicate with the first heating water tank, and several cleaning ports and sediment outlets are formed in the flame chamber and the flue chamber. And a tubular water pipe type hot water boiler formed by forming a recess in the bottom of the flame chamber and the flue gas chamber. The furnace tube type hot water boiler according to claim 1, wherein the hot water to be heated which is supplied to the inlet of the first heat exchanger is heated twice by connecting the outlet of the first heat exchanger and the inlet of the second heat exchanger with a connecting pipe. The furnace tubular hot water boiler according to claim 1, wherein the deposit outlet is formed in the recess. The furnace tube type hot water boiler according to claim 1, wherein a small hole is formed in a cover that closes the deposit outlet.