KR20100065527A - Separation type heat exchanger - Google Patents

Abstract

PURPOSE: A separation type heat exchanger is provided to easily manufacture a combustor and a pipe and to form a passage for supplying water uniformly. CONSTITUTION: A separation type heat exchanger(1) comprises a pipe combining body(10), an inner pipe(20), and an outer pipe(30). The pipe combining body comprise a plurality of parallely arranged pipes, an upper supporting plate combined with the upper ends of the pipes, and a lower supporting plate combined with the lower ends of the pipes. The inner pipe surrounds the pipe combining body to tightly contact with the edges of the upper supporting plate and the lower supporting plate and is formed at the lower part of the pipe combining body with a long length to form a combustor at the lower part of the pipe combining body. The inner pipe comprises a through-hole formed just above the lower supporting plate. The outer pipe surrounds the inner pipe at an distance from it, the upper end of the outer pipe is combined with the inner pipe at the upper part of the through-hole and the lower end of the outer pipe is combined with the lower end of the inner pipe. A first entrance is formed at the outer pipe and a second entrance is formed at the inner pipe.

Description

Separation type heat exchanger

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger that is easy to manufacture in forming an association of a multi-tube heat exchanger and a combustion chamber, and has a low amount of hot water.

A heat exchanger is a device in which two fluids having different temperatures are divided by heat transfer plates, and heat exchange is performed between heat transfer plates. Heat exchangers are widely used in various fields from heating and hot water supply to air conditioning, power generation and waste heat recovery.

When the heat exchanger is operated in a boiler or the like where a multi-tube heat exchanger is used, a burner is used to burn fuel to generate hot combustion gas, and a pipe is formed to supply the combustion gas, and water flows through the pipes. Allow for heat exchange between the flue gas and water.

The space where hot combustion gas is generated by the burner corresponds to the combustion chamber. Multiple associations are integrally coupled to this combustion chamber, through which combustion gas is supplied. Typically, the combustion chamber and the associated body is integrally formed, and the heat exchanger body is coupled to the outside to form a heat exchanger.

In heat exchangers, fast and effective heat exchange between the two fluids is of utmost importance. Therefore, when generating the combustion gas using the same fuel, there is a need for a larger amount of combustion gas to be heat exchanged with water. The associations are made in plural and are arranged closely to one another for rapid heat exchange.

Welding is generally used in order to ensure tightness and watertightness in associating the tube with the combustion chamber, but it is difficult to weld so that the long pipe-shaped tube is closely arranged.

In addition, there is a limit to the rapid hot water supply because the water flowing between the association is difficult to form a path.

The present invention has been made to solve the problems as described above, one embodiment of the present invention is easy to manufacture by forming an association individually, it is possible to reduce the amount of hot water to enable a more rapid hot water supply, water It is associated with that efficiency can be increased by allowing flow through this sequential path.

One preferred embodiment of the present invention is provided with a plurality of pipe-like associations arranged in parallel, the upper support plate to penetrately coupled to the upper end of the association, and the associative assembly consisting of a lower support plate penetrated to the lower end of the association ; An inner tube which surrounds the associated assembly in close contact with the upper support plate and the lower support plate and is formed longer than the associated assembly so that a combustion chamber is provided below the associated assembly, and a through hole is formed directly above the lower support plate; And an inner body spaced apart from the inner tube body to surround the inner tube body, the upper end of which is tightly coupled to the inner tube body and the lower end of the inner tube body to be tightly coupled to the lower end of the inner tube body. It is provided with a split heat exchanger, characterized in that the first inlet and outlet, the inner tube body is formed with a second inlet and outlet.

According to one embodiment of the present invention as described above, first, since the associated body is formed separately and the inner tube can be surrounded by the inner tube to form a combustion chamber, there is no difficulty in welding in forming the association with the combustion chamber This is easy.

Secondly, the water introduced through the inlet pipe may be supplied between the pipes through the through-holes to form a constant supply flow path.

Third, since the inner tube can be formed in close proximity to the associating body of the associating body, it is possible to reduce the amount of cold water, thereby enabling a rapid temperature rise.

1A and 1B are a perspective view and a cross-sectional view showing a split heat exchanger according to an embodiment of the present invention.

Split heat exchanger (1) according to a preferred embodiment of the present invention is provided with a plurality of pipe-shaped pipes 11 arranged in parallel, and the upper support plate 12 through and coupled to the upper end of the pipe (11) And an associative assembly (10) consisting of a lower support plate (13) passing through and coupled to the lower end of the tube (11); Surrounding the associative assembly 10 in close contact with the edges of the upper support plate 12 and the lower support plate 13, and formed longer than the associative assembly 10 so that the combustion chamber 100 is below the associative assembly 10. An inner tube body 20 having a through hole 21 formed directly above the lower support plate 13; And an inner tube body 20 spaced apart from the inner tube body 20 to surround the inner tube body 20, and an upper end portion of the inner tube body 20 is closely coupled to the inner tube body 20 at an upper side of the through-hole 21. It comprises an outer body 30 that is in close contact with the lower end of the tubular body 20, the outer body 30 is formed with a first inlet and outlet 31, the inner tube body 20, the second inlet ( 22) is formed.

The association 11 according to the invention is not formed integrally with the combustion chamber 100, but is formed separately and separately from the combustion chamber 100.

As described above, in a conventional heat exchanger, a portion corresponding to the combustion chamber is first formed by drawing, and an association is integrally coupled thereto. In the case of coupling the associating furnace to the combustion chamber by this process, it is difficult to secure enough space for welding, which causes considerable difficulty in the operation. In the present invention, in order to improve this point, the associative assembly 10 is first formed, and the inner tube body 20 is coupled to surround the periphery thereof so that the combustion chamber 100 is formed as a result.

The associative coupling body 10 includes the associator 11 through which a high temperature combustion gas is supplied, and the upper support plate 12 and the lower support plate 13 to fix the associator 11.

The tube 11 has an elongated pipe shape having both ends opened so that combustion gas can communicate through the inside thereof, and the tube 11 is provided in plural and dense with each other to form the associative body 10. The upper support plate 12 and the lower support plate 13 are respectively coupled to upper and lower ends of the tube 11. The tube 11 is formed to be dense but not in close contact with each other, so that water is communicated through a gap between the tube 11.

The inner tube 20 is formed to surround the associative body (10). The inner tube 20 is formed to be longer than the length of the associating body 10, in particular is formed long down the associating body (10). As the inner tube body 20 is coupled to the associative body 10, the combustion chamber 100 and the second water chamber 300 are provided.

The lower end of the inner tube body 20, that is, the lower side of the associated assembly 10 corresponds to the combustion chamber 100 and combustion gas is generated in the combustion chamber 100. Split heat exchanger 1 according to the present invention is formed in the form of the lower end, the burner is coupled through the combustion may occur inside the combustion chamber (100).

The space formed by coupling the associative body 10 and the inner tube body 20 corresponds to the second chamber 300. Water introduced into the second water chamber 300 is heat-exchanged with the combustion gas inside the plumbing (11), so that hot water or heating water is provided through the second inlet and outlet (22).

The through hole 21 is formed in the central portion of the inner tube body 20. Water introduced through the first inlet and outlet 31 is introduced into the second water chamber 300 through the through hole 21.

In the above description, water has been introduced through the first inlet and outlet 31 and is heated and then supplied through the second inlet and outlet 22. However, unlike the first inlet and outlet, the first inlet and outlet may be supplied through the second inlet and outlet 22. Of course, it can be discharged through the inlet and outlet 31.

The exterior body 30 is formed to surround a portion of the inner tube body 20. The exterior body 30 surrounds the lower side of the inner tube body 20 to form a predetermined space, which corresponds to the first chamber 200. The first water chamber 200 corresponds to an outer portion of the combustion chamber 100, and water introduced through the first inlet and outlet 31 stays in this space for the first time. A high temperature combustion gas is generated around the combustion chamber 100, and the first water chamber 200 is formed to allow heat exchange with the incoming water without wasting heat of the combustion gas.

The exterior body 30 is formed to cover the through hole 21 so that the first and second water chambers 200 and 300 may be connected through the through hole 21. Upper and lower ends of the exterior body 30 are tightly coupled to the inner tube body 20 to ensure watertightness. The exterior body 30 and the inner tube body 20 may be coupled by core welding.

2 (a) and 2 (b) are a perspective view and an exploded perspective view showing an associative assembly used in the split heat exchanger shown in Figs. 1 (a) and 1 (b).

In the split type heat exchanger 1 according to the preferred embodiment of the present invention, the first coupling formed at the edge of the upper support plate 12 and the lower support plate 13 is bent to be in close contact with the inner circumferential surface of the inner tube body 20. The portion 12a and the second coupling portion 13a are respectively formed.

The upper support plate 12 and the lower support plate 13 has an overall shape in the shape of a disc. Holes are formed in the upper support plate 12 and the lower support plate 13 so that upper and lower ends of the tube 11 can be fitted. In the state where the upper end of the tube 11 is fitted to the upper support plate 12, welding can be performed in the upper direction of the upper support plate 12, and sufficient space is secured so that the welding is not restricted. This is the same when the lower support plate 13 is coupled, and the lower support plate 13 can be easily coupled with the tube 11 through welding.

The upper support plate 12 is formed with a first coupling portion 12a bent in an upward direction. The first coupling portion 12a is in close contact with the inner circumferential surface of the inner tube body 20 and may be firmly coupled by welding. The first coupling portion 12a is a portion that is exposed from the outside and can be easily coupled without being restricted by welding.

The lower support plate 13 is formed with a second coupling portion 13a bent in a downward direction. The second coupling portion 13a is also in close contact with the inner circumferential surface of the inner tube body 20 and is coupled to the inner tube body 20 by welding. Since the welding space of the second coupling part 13a is sufficiently provided by the space in which the combustion chamber 100 is formed, welding can be easily performed.

In the split type heat exchanger 1 according to the preferred embodiment of the present invention, the first inlet and outlet 31 is formed adjacent to the lower end of the exterior body 30, and the second inlet and outlet 22 is formed in the inner portion. It is formed adjacent to the upper end of the tubular body 20.

The first inlet and outlet 31 is the first passage through which water is introduced into the heat exchanger of the present invention, and the second inlet and outlet 22 is a passage through which hot water heated through the heat exchanger of the present invention is discharged.

The first inlet and outlet 31 is formed at one side of the exterior body 30, and the water flowing into the first water chamber 200 through the first inlet and outlet 31 passes through the through hole 21. I'm going. The heat transferred from the combustion chamber 100 warms the water in the first water chamber 200. In this process, the water introduced through the first inlet and outlet 31 is already inside the first water chamber 200. If it is easily mixed with the heated water, it is difficult to supply hot water through the through hole 21. As a result, rapid hot water supply becomes difficult.

In the present invention, the first inlet and outlet 31 is formed in the lower side of the outer body 30 so that the water heated in the first water chamber 200 through the through-hole 21 to the second water chamber 300 To be supplied.

The second inlet and outlet 22 is formed on the upper side of the inner tube body 20, which is also to discharge the high-temperature water through a sufficient heat exchange with the combustion gas inside the tube (11).

In the split type heat exchanger 1 according to the preferred embodiment of the present invention, the through hole 21 is formed in a direction opposite to the first inlet and outlet 31.

As described above, water introduced through the first inlet and outlet 31 exits the first water chamber 200 through the through hole 21. As the path of water in the first water chamber 200 is longer, heat exchange through the combustion chamber 100 may also occur sufficiently. The water flowing in the first chamber 200 does not move only in a predetermined path, but the through-hole 21 is formed in the opposite direction to the first inlet and outlet 31. Since the shortest distance (the path of water in the first water chamber 200) is formed longer than the case, heat exchange may occur for a longer time, and higher temperature water may flow through the through hole 21.

3 is a cross-sectional view showing a split heat exchanger according to another embodiment of the present invention.

The split type heat exchanger 1 according to the preferred embodiment of the present invention further includes a hot water coil 50 formed to surround the inner tube body 20 inside the exterior body 30.

The hot water coil 50 is formed to surround the inner tube body 20 and is located in a space in which the first water chamber 200 is formed. Hot water may be supplied through the hot water coil 50, and hot water may be circulated through the hot water coil 50 to use hot water separately from the heating water.

As shown in FIG. 3, the split heat exchanger 1 according to the present invention may be formed such that the combustion chamber 100 is placed above. Exhaust gas discharged during combustion includes water vapor, and it is generally called a condensing boiler to recover the latent heat of water vapor to increase the efficiency of heat exchange. In this type of boiler, water vapor contained in the exhaust gas condenses below the dew point temperature and is discharged to the outside of the heat exchanger. The condensate has an acidity of pH2.8 to pH3.5, and the acid condensate forms the boiler. If it comes in contact with the part being made, it may cause corrosion. In consideration of this point, in the present invention, the associative assembly 10 is formed below to facilitate the discharge of condensate through the associative 11.

4 is a cross-sectional view showing a split heat exchanger according to still another embodiment of the present invention.

In the split heat exchanger (1) according to the preferred embodiment of the present invention, the associative assembly (10) is flat in a direction perpendicular to the longitudinal direction of the associative (11) and is zigzag in the associative assembly (10). A plurality of baffles 40 are provided for forming a path of water in the direction.

The baffle 40 is sandwiched between the upper support plate 12 and the lower support plate 13 by being fitted in the tube 11. However, the baffle 40 is not made to completely separate the second water chamber 300, but is formed to form a path of water in the second water chamber 300. The baffle 40 is made such that the edge is in close contact with only a part of the inner periphery of the inner tube body 20, not all.

As shown in FIG. 4, the baffle 40 is provided in plural and is formed such that a path of water is formed in a zigzag direction. When any one of the baffles 40 are coupled to be in close contact with one side of the inner tube 20, the other baffles 40 adjacent to the baffles 40 are coupled to be in close contact with opposite sides of the inner tube 20.

The baffle 40 allows the water to stay in the second reservoir 300 for a sufficient time and increases the time for contact with the plumbing 11. In addition, since the path of water is formed in the second water chamber 300 by the baffle 40, the heated water may be sequentially discharged, thereby enabling a more rapid supply of hot water.

In the split type heat exchanger 1 according to the preferred embodiment of the present invention, the through hole 21 and the second inlet and outlet 22 correspond to the position of the baffle 40 provided in the associative body 10. Formed in the direction.

A path of water is formed in the second water chamber 300 by the baffle 40. Therefore, the through-hole 21 and the second inlet and outlet 22 should be formed in an appropriate position to match this path. The second entrance and exit 22 should be formed at the end point such that the through hole 21 is formed at the start point of the water path formed by the baffle 40.

The through hole 21 is formed in consideration of the coupling position of the baffle 40 coupled to the lowermost side of the associative body 10. That is, the through hole 21 is formed in the same direction as the direction in which the baffle 40 positioned at the lowermost side joins the inner tube.

Similarly, the second inlet and outlet 22 is formed in consideration of the coupling position of the baffle 40 coupled to the uppermost side of the associating body 10. The second entrance and exit 22 is formed in the same direction as the direction in which the baffle 40 positioned at the uppermost side engages with the inner tube.

1A and 1B are a perspective view and a cross-sectional view showing a split heat exchanger according to an embodiment of the present invention;

2 (a) and 2 (b) are a perspective view and an exploded perspective view showing an associative assembly used in the split heat exchanger shown in Figs. 1 (a) and 1 (b),

3 is a cross-sectional view showing a split heat exchanger according to another embodiment of the present invention;

4 is a cross-sectional view showing a split heat exchanger according to still another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: Split type heat exchanger 10: Associative assembly

11: Association 12: Upper support plate

12a: first coupling portion 13: lower support plate

13a: second coupling portion 20: inner tube

21: through hole 22: the second entrance and exit

30: exterior body 31: first entrance and exit

40: baffle 50: hot water coil

100: combustion chamber 200: first water chamber

300: second chamber

Claims (6)

An associative assembly comprising a plurality of pipe-shaped associations arranged in parallel, an upper support plate penetratingly coupled to an upper end of the association, and a lower support plate penetratingly coupled to a lower end of the association; An inner tube which surrounds the associative assembly to be in close contact with the upper support plate and the lower support plate, and is formed longer than the associative assembly so that a combustion chamber is provided below the associative assembly, and a through hole is formed directly above the lower support plate; And Is formed to surround the inner tube spaced apart from the inner tube body, the upper end is in close contact with the inner tube body on the upper side of the through hole, the lower end comprises an outer body in close contact with the lower end of the inner tube body Lose, The external heat exchanger is formed with a first inlet and outlet, characterized in that the inner tube body is formed with a second inlet and outlet. The method of claim 1, Split edge heat exchanger, characterized in that the first coupling portion and the second coupling portion is formed to be bent in close contact with the inner circumferential surface of the inner tube body on the edge of the upper support plate and the lower support plate. The method of claim 1, The first inlet and outlet is formed adjacent to the lower end of the outer body, and the second inlet and outlet, characterized in that formed adjacent to the upper end of the inner tube body. The method of claim 1, Split heat exchanger further comprises a hot water coil formed to surround the inner tube inside the outer body. The method according to any one of claims 1 to 4, The associative assembly is divided heat exchanger is provided with a plurality of baffles are formed flat in the direction perpendicular to the longitudinal direction of the associating body to form a path of water in the zigzag direction inside the associative assembly. The method of claim 5, The through-hole and the second inlet and outlet are divided heat exchanger, characterized in that formed in a direction corresponding to the position of the baffles provided in the associating body.

Images