KR20030044455A - A inserting structure for pipe of the heater - Google Patents

Abstract

PURPOSE: Pipe insertion structure of a heat exchanger for a heater is provided to prevent vibration and noise, and to operate stably by restricting deformation and crack with sliding and inserting the pipe to the chamber. CONSTITUTION: A pipe insertion system of a heat exchanger comprises a first chamber(62) receiving combustion gas from a combustion chamber; a second chamber(64) opposed to the first chamber for heat exchange and connected to a discharge pipe for discharging combustion gas; and plural pipes(66) mounted between first and second chambers for heat exchange and slightly moved into the first and second chambers to offset deformation of the heat exchanger in thermal expansion and contraction. A curved part(62d) is formed in the pipe insertion portion, and contacted to the outside of the pipe. Noise and vibration are reduced, and the heat exchanger is operated stably by restricting crack and deformation.

Description

{A inserting structure for pipe of the heater}

The present invention relates to a heat exchanger for a hot air fan, and more particularly to a heat exchanger for a hot air fan, in which a plurality of pipes having a heat exchange effect in the first and second chambers are slidably inserted, thereby preventing cracks and torsion generated by heat deformation. The pipe insertion structure.

In general, the hot air heater is a type of heater that increases the temperature of the room by supplying heat to maintain a comfortable indoor temperature in winter, the heater is classified into electric heaters, steam heaters, hot water heaters, hot air heaters, etc. according to the heat source used.

1 is an exploded perspective view illustrating a conventional warm air fan, and FIG. 2 is a configuration diagram illustrating a warm air fan according to the prior art.

As shown in FIGS. 1 and 2, the warm air fan is a device that blows and heats high-temperature air into a room. When the power switch is turned on, combustion air and fuel are supplied to the burner 6, and the burner is controlled by a signal given from the controller. In (6), fuel and air are mixed and injected into the combustion chamber (8), ignited by the ignition apparatus and burned in the combustion chamber (8), and the combusted combustion gas is exchanged by a combustion fan (3). It is made to be discharged to the outside through the exhaust port 2 through 10).

At this time, the indoor air introduced by the operation of the blower fan 1 is heated in contact with the outer wall of the combustion chamber 8 and the heat exchanger 10, and the heated air is discharged into the room through the discharge port 4 to be heated. Work.

3 is a cross-sectional view showing a heat exchanger for a hot air heater according to the prior art, and FIG. 4 is a cross-sectional view of the A-A line shown in FIG.

The heat exchanger 10 for a hot air heater according to the related art is connected to the combustion chamber 8 to provide a first chamber 12 to which combustion gas combusted in the combustion chamber 8 is supplied, and a predetermined distance from the first chamber 12. The second chamber 14 is connected to the exhaust port 2, and a plurality of pipes 16 are connected between the first chamber 12 and the second chamber 14.

Here, the first and second chambers 12 and 14 are formed in a circular water tank shape, and a cover 12a in which a plurality of holes 12b are formed is joined, and the first and second chambers 12 and 14 are connected therein. ), A guide panel 12c is formed to improve the heat exchange efficiency by allowing the combustion gas supplied from the combustion chamber 8 to flow while reciprocating the first and second chambers 12 and 14 a plurality of times.

FIG. 5 is a detailed view of B shown in FIG. 3.

The pipe 16 is fitted into a hole 12b formed in the cover 12a of the first and second chambers 12 and 14, and a pair of holes may be inserted into and fastened to the circumference of the hole 12b. The projection 16a is formed.

The protrusions 16a are bent at both ends of the pipe 16 to the outside, and a hole formed on the cover 12a between the pair of protrusions 16a with another protrusion 16a formed at regular intervals on the outside thereof. The edge of 12b is inserted, and then a caulking operation is performed such that the pipe 16 is pressed against the cover 12a to suppress the flow in the left and right directions of the pipe 16.

Looking at the operation of the prior art configured as described above are as follows.

First, when the air blower is operated, a mixture of air and fuel is combusted in the combustion chamber 8, and the combusted combustion gas is supplied to the first chamber 12, and the pipe 16 is guided by the guide panel 12c. Accordingly, the first and second chambers 12 and 14 alternately flow in, performing heat exchange, and are discharged to the outside through the exhaust port 2.

At this time, the indoor air introduced by the blowing fan 1 is in contact with the outer surface of the combustion chamber 8 and the heat exchanger 10 to exchange heat to supply warm air to the room.

However, the pipe insertion structure of the conventional heat exchanger for a heat exchanger has a pair of protrusions 16a into which the edges of the holes 12b of the cover 12a are inserted at the ends of the pipes 16, and fastened by a caulking operation. Due to the compression, the first and second chambers 12 and 14 may be deformed due to repeated thermal expansion and contraction of the heat exchanger, and cracks may be generated to generate vibration and noise.

The present invention has been made to solve the above problems of the prior art, the pipe is slidably inserted into and out of the holes of the first and second chambers, so that even if the heat exchanger is repeatedly repeated thermal expansion and contraction, It is an object of the present invention to provide a pipe insertion structure of a heat exchanger for a hot air fan that prevents deformation and cracks generated in a pipe to achieve stable operation with low vibration and noise.

1 is an exploded perspective view showing a warm air heater according to the prior art,

2 is a configuration diagram showing a warm air heater according to the prior art,

3 is a cross-sectional view showing a heat exchanger for a hot air heater according to the prior art,

4 is a cross-sectional view taken along the line A-A shown in FIG.

5 is a detailed view of B shown in FIG.

6 is a cross-sectional view showing a heat exchanger for a warm air fan according to the present invention;

7 is a cross-sectional view of C-C shown in FIG.

FIG. 8 is a detailed view of D shown in FIG. 6.

<Explanation of symbols on main parts of the drawings>

58: combustion chamber 60: heat exchanger

62: first chamber 62a: cover

62b: hole 62c: guide panel

62d: curved portion 64: second chamber

66: pipe

The pipe insertion structure of the heat exchanger for a hot air heater according to the present invention for solving the above problems is installed to face the first chamber and the first chamber into which the combustion gas, which is combusted in the combustion chamber, flows at a predetermined interval to exchange heat. And a second chamber connected to the discharge pipe for discharging the heat exchanged combustion gas to the outside, and a heat exchanger installed between the first chamber and the second chamber to achieve heat exchange and simultaneously by thermal expansion and contraction. In order to offset the deformation of the first, the second chamber is characterized in that it comprises a plurality of pipes are installed in a forced push method so that a very small flow to the inside and outside.

In addition, a portion in which the pipes of the first and second chambers are inserted may be formed to be in close contact with the outer wall of the pipe.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

6 is a cross-sectional view showing a heat exchanger for a warm air fan according to the present invention, Figure 7 is a cross-sectional view of C-C shown in FIG.

The heat exchanger for a hot air blower according to the present invention is installed to face the first chamber 62 to which the combustion gas combusted in the combustion chamber is supplied, and the first chamber 62 at a predetermined interval, and is connected to the exhaust port. 64 and a plurality of pipes 66 connected between the first chamber 62 and the second chamber 64.

Here, the first and second chambers 62 and 64 are formed in a circular water tank shape, and a cover 62a having a plurality of holes 62b is bonded thereto, and the first and second chambers 62 and 64 are joined therein. ), A guide panel 62c is formed to improve the heat exchange efficiency by allowing the combustion gas supplied from the combustion chamber to flow while reciprocating the first and second chambers 62 and 64 a plurality of times.

FIG. 8 is a detailed view of D shown in FIG. 6.

The edge of the hole 62b is inserted to allow the pipe 66 to flow in and out of the hole 62b, but a curved portion 62d is formed to prevent the combustion gas from flowing out and mixing with the indoor air. .

Here, the curved portion 62d is formed by bending a certain amount of curves to the outside of the cover 62a along the outer wall of the pipe 66.

In addition, the pipe 66 is fitted into the hole 62b formed in the cover 62a of the first and second chambers 62 and 64, and thus the pipe 66 is not compressed with the hole 62b so that a certain amount of flow is possible and sliding. To be inserted.

As a result, even when the heat exchanger 60 is thermally expanded, the pipe 66 of the heat exchanger is slidably inserted into the cover 62a so that the pipe 66 absorbs the heat deformation even when overheated, thereby causing the pipe 66 to contract or expand. The noise is improved by preventing the pipe from absorbing the heat deformation of the heat exchanger 60, and thus, cracks that may occur due to repeated fatigue due to shrinkage and expansion of the cover 62a can be prevented.

Looking at the operation of the present invention configured as described above are as follows.

First, when power is supplied to the heater, the fuel and air mixed in the combustion chamber are injected, and the fuel is ignited by the ignition device to start combustion in the combustion chamber, and the combusted combustion gas is first and second chambers 62 of the heat exchanger 60. 64 and the pipe 66 is discharged to the exhaust port.

In addition, the indoor air introduced by the blowing fan forcibly flowing the indoor air is heat-exchanged while passing through the combustion chamber and the heat exchanger 60, and flows back into the room through the discharge port, thereby achieving a heating function.

In the pipe insertion structure of the heat exchanger for a warm air heater according to the present invention configured as described above, the curved surface portion of which the hole edges of the cover pressed into the first and second chambers forms a curved surface along the outer wall of the pipe, and flows a certain amount into and out of the hole By inserting the pipe as much as possible, there is an advantage that can absorb the heat deformation of the heat exchanger to achieve a stable operation to prevent noise and cracks.

Claims (2)

A first chamber into which combustion gas combusted in the combustion chamber is introduced; A second chamber installed opposite to the first chamber at a predetermined interval to achieve heat exchange, and connected to a discharge pipe for discharging the heat exchanged combustion gas to the outside; It is installed between the first chamber and the second chamber and forced to flow in a very small amount into and out of the first and second chambers in order to compensate for the heat exchanger generated by thermal expansion and contraction at the same time for heat exchange. Pipe inserting structure of a heat exchanger for a hot air fan comprising a plurality of pipes installed in a manner. The method of claim 1, The pipe insertion structure of the heat exchanger for the warm air heater, characterized in that the curved portion is in close contact with the outer wall of the pipe portion is inserted into the first and second chamber pipe.