JPH08303755A - Discharging pipe fixing structure of intake or discharging combustion device - Google Patents

Abstract

PURPOSE: To keep a displacement amount of a discharging port in a minimum value, enable it to be sufficiently endured against a force obtained when a discharging pipe is fixed, make a less-expensive material cost and further reduce the number of manufacturing steps by a method wherein a discharging cylinder fixing plate is attached to a frame and a removal stopper plate is fixed between an outside part of a discharging pipe rib of the discharging pipe and a discharging pipe fixing plate. CONSTITUTION: A fixing plate 14 having an engaging part 14a projected into between two discharging port ribs 13 is fixed to an end part of a communication pipe 8. The engaging portions 14a are formed at opposing locations in such a manner that they are arranged at right and left sides or at upper and lower sides so as to enable the fixing plate 14 to be slid in such a direction as one having no engaging portions. There is provided a discharging cylinder fixing plate 16 having an opening 16a through which a discharging pipe rib 15 of a discharging pipe 11 and further there is provided a stopper plate 17 installed between an intake or discharging top side of the discharging pipe rib 15 and the discharging cylinder fixing plate 16. Then, the discharging cylinder fixing plate 16 is fixed to the frame and the discharging pipe 11 is fitted to a discharging port 3 through an opening 16a, thereafter the stopper plate 17 is installed in it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust pipe fixing structure for an intake / exhaust type combustor.

[0002]

2. Description of the Related Art An intake / exhaust type combustor takes in outdoor air and supplies it to a burner. The high temperature combustion gas generated in the burner is heat-exchanged with indoor air by a heat exchanger, and the low temperature exhaust gas is outdoors. Is to be released to. For this purpose, an intake port and an exhaust port are provided on the back, and the intake and exhaust tops
The exhaust port is connected by an intake / exhaust pipe.

This intake / exhaust port is fixed directly to the back surface of the frame body, and even when the exhaust pipe is attached to the exhaust port through a sealing member such as an owling for sealing, the intake / exhaust port does not wobble. It can be installed very easily.

[0004]

By the way, in order to fix the intake / exhaust ports to the frame, it is necessary to configure the intake / exhaust ports with dedicated parts and to attach them to the frame by using a dedicated bracket or the like. In addition, a sealing structure is also required at the connection between the communication pipe that communicates with the heat exchanger and the parts that make up this exhaust port, and the structure of this part is rather complicated and increases the cost. Was inherent.

Further, the dimensions of the heat exchanger and the connecting pipe installed inside the frame expand and contract with the progress of combustion, and if the connecting pipe is fixed to the exhaust port fixed to the back plate of the frame, the heat exchanger and There is no escape area for distortion when the connecting pipe expands or contracts,
Abnormal noises such as rattling, creaking, and creaking are generated, which is not only unpleasant, but also loosening of fixed parts may cause abnormal conditions in which exhaust gas leaks into the room. Not the desired structure.

[0006]

The present invention relates to a structure for fixing an exhaust pipe for solving the above-mentioned problems, and includes an intake port 2 for sucking combustion air into a frame 1 and combustion in the frame 1. An exhaust port 3 for discharging gas is provided, and a combustion fan 5 for supplying the air sucked from the intake port 2 to the burner 4, the combustion gas generated by the burner 4, and the convection fan 6 blown into the frame 1. A heat exchanger 7 for exchanging heat with the indoor air, and a communication pipe 8 for communicating the exhaust port 3 provided in the frame 1 with the heat exchanger 7.
The intake port 2 and the exhaust port 3 are connected to the intake / exhaust top 9 connected to the outside by intake / exhaust pipes 10 and 11, and the burner 4 burns using the outdoor air to burn the combustion gas outdoors. In the intake / exhaust type combustor that discharges into the air, the exhaust port 3 is formed by the tip of the connecting pipe 8 protruding from the opening 12 provided in the frame 1, and the two adjacent exhausts are formed at the end of the connecting pipe 8. Mouth rib 1
3 is formed, and a fixing plate 14 having a locking portion 14a protruding between the two exhaust port ribs 13 is attached to the frame body 1 on the periphery of the opening 12, and at the end of the exhaust pipe 11. The exhaust pipe rib 15 of the exhaust pipe 11 attached to the exhaust port 3 forms the exhaust pipe rib 15, and the frame 1 is attached with the exhaust pipe fixing plate 16 having the opening 16a through which the exhaust pipe rib 15 penetrates.
The retaining plate 1 between the outer side of 5 and the exhaust pipe fixing plate 16
7 is attached.

Further, in the above structure, in order to simplify the assembly process, the L-shaped connecting pipe 8 extending downward from the heat exchanger 7.
The fixing plate 1 provided with a protrusion protruding between the two exhaust port ribs 13.
4 locking portions 14a are provided at two symmetrical positions, and
The exhaust pipe fixing plate 16 is formed integrally with the fixing plate 14, the opening 16a of the exhaust pipe fixing plate 16 is opened downward, and the fixing plate 14 and the exhaust pipe fixing plate 16 which are integrated are slid downward from above. The locking portion 14a is located between the two exhaust port ribs 13.

Further, in the above structure, by specifying the shapes of the parts, it is possible to install the combustor with a narrow gap between the frame and the rear wall, and the opening 1 provided in the frame 1
2 has a quadrangular shape, and the locking portion 14a of the fixing plate 14 can be inserted into the frame 1 from the upper portion of the opening 12, and the fixing plate 14 and the exhaust pipe fixing plate 16 which are integrated with each other are the frame body. The engagement portion 14a is slid from the upper side in a state where the engagement portion 14a is inserted into the frame 1, and the engagement portion 14a is positioned between the two exhaust port rings 13 in the frame body 1.

[0009]

The structure and handling of the intake / exhaust type combustor are basically the same as the conventional product. The combustion fan 5 sucks air from the outside and sends it to the burner 4, and the combustion gas generated in the burner 4 exchanges heat. After passing through the container 7, it is discharged to the outside from the intake / exhaust top 9 through the exhaust pipe 11.

Connecting pipe 8 extending from the heat exchanger 7 to the exhaust pipe 11
Has one end fixed to the heat exchanger 7 and the locking portion 14a of the fixing plate 14 extended between the two exhaust port ribs 13, the end of the connecting pipe 8 is fixed to the frame body 1. It is not engaged and is in an engaged state. However, when the exhaust pipe 11 is attached to the end of the connecting pipe 8, the locking portion 14a and the one exhaust port rib 13 come into contact with each other to stop the movement, so that the exhaust pipe 11 can be reliably attached and detached.

Further, even if the connecting pipe 8 expands or contracts due to temperature change, some displacement is allowed in the connecting portion with the exhaust pipe 11, so abnormal noise is generated or cracks are caused by distortion of the mounting portion. No loosening or loosening will occur.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in the drawings. 1 is a frame of a combustor, 2 is an intake port provided near the back plate 1a of the frame 1, and 3 is exhaust gas provided near the intake port 2. Ports 10 are intake pipes connected to the intake port, 11 are intake pipes connected to the exhaust port 10, and the other ends of the intake / exhaust pipes 10 and 11 are connected to an intake / exhaust top 9 open to the outside. .

Reference numeral 4 is a burner installed in the frame 1, 18 is an air passage for supplying combustion air to the burner 4, and 5 is a combustion fan for blowing combustion air into the air passage 18. The outdoor air taken in by the combustion fan 5 via 10 is sent from the air passage 18 to the burner 4 for combustion.

In the intake path through which the low temperature air flows, there is no problem of thermal distortion or expansion and contraction of the pipeline, and even if the connection part of the intake path is about to come off, the indoor air is replaced instead of outdoors. Since it is used for combustion, a serious accident does not occur directly, and the attachment structure of the intake pipe 10 has been conventionally implemented by various simple methods.

In the embodiment of the present invention, the intake port 2 is not directly fixed to the frame body 1, but is formed by extending the intake port of the fan casing of the combustion fan 5 standing upright from the air passage 18 to the outside of the frame body 1. Therefore, by fixing the intake pipe 10 to the suction port, the intake pipe 10 can be easily attached without forming the dedicated intake port 2 on the back plate 1a of the frame 1.

Reference numeral 19 is a combustion chamber following the burner 4, 7 is a heat exchanger attached to the upper portion of the combustion chamber 19, and 8 is a connecting pipe that connects the heat exchanger 7 and the exhaust port 3 provided in the frame 1. . In the embodiment of the present invention, the connecting pipe 8 is formed in an L shape, and one end thereof is fixed to the heat exchanger 7, and the other end is outside the frame body 1 through an opening 12 provided in the back plate 1a of the frame body 1. The other end of the connecting pipe 8 is projected to form the exhaust port 3.

Reference numeral 13 designates 2 provided adjacent to the end of the connecting pipe 8.
The exhaust port rib 14 is a fixed plate having a locking portion 14a projecting between the two exhaust port ribs 13, and the locking portion 1
4a are formed at opposite positions such as left and right or up and down, and the fixing plate 14 can be slid in the direction without the locking portion by forming a portion without the locking portion in at least one direction. Attach the fixing plate 14 to the
It is fixed by 4b.

For this reason, the exhaust port 3 formed at the end of the connecting pipe 8 can prevent the vertical, horizontal, and left flakes because the connecting pipe 8 is fixed by the heat exchanger 7. The mouth rib 13 and the locking portion 14a are locked and stopped,
Even if a strong force is required for mounting through a sealing structure such as an owling, the exhaust pipe 11 can be reliably mounted in the exhaust port 3.

Reference numeral 15 denotes an exhaust pipe rib formed at the end of the exhaust pipe 11, and the exhaust pipe rib 15 of the embodiment is formed by extruding the entire circumference of the exhaust pipe 11 in a convex shape. A sealing structure is formed between the exhaust pipe 11 and the exhaust port 3 by inserting the Owling inside.

Reference numeral 16 denotes an exhaust pipe fixing plate having an opening 16a through which the exhaust pipe rib 15 of the exhaust pipe 11 penetrates, and 17 is mounted between the intake / exhaust top 9 side of the exhaust pipe rib 15 and the exhaust pipe fixing plate 16. The exhaust pipe fixing plate 16 is a retaining plate and is fixed to the frame body 1, and the exhaust pipe 1 is provided through the opening 16a.
If the slip-out prevention plate 16 is attached after the exhaust pipe 1 has been fitted into the exhaust port 3, there is no risk of the exhaust pipe 11 falling off even if the exhaust pipe 11 is pulled with a strong force.

In the embodiment of the present invention, the fixing plate 14 attached to the frame 1 and the exhaust pipe fixing plate 16 are integrally formed,
For this reason, the locking portion 14a is provided at two symmetrical positions, and the opening 16a is opened downward so that the fixed plate 1 is integrated.
4 and the exhaust pipe fixing plate 16 are slid from the upper side to the lower side, the locking portion 14a is positioned between the two exhaust port ribs 13, and the exhaust pipe 11 is opened at the position fixed by the screw 14b. It can be attached to the exhaust port 3 via 16a. Therefore, the structure for fixing the exhaust pipe 11,
The structure for fixing the exhaust port 3 to the back plate 1a of the frame 1 can be implemented by a simple operation of sliding one member and screwing it.

On the other hand, the exhaust pipe 11 connecting the intake / exhaust top 9 and the exhaust port 3 is formed by a pipe bent in an L shape, and therefore the minimum size of the back plate 1a of the frame 1 and the wall surface is L
It depends on the shape of the exhaust pipe 11 bent into a shape. Since the minimum bending radius of the L-shaped bent portion is determined from the diameter of the exhaust pipe 11, the frame 1 is attached to the wall surface in the conventional configuration in which the exhaust port 3 is attached to the back plate 1a of the frame 1. It was difficult to install close together.

In the present invention, the opening 12 provided in the back plate 1a of the frame 1 is formed into a quadrangle as shown in FIG. 4, and the locking portion 14a of the fixed plate 14 is provided from the opening 12 to the frame as shown in FIG. Since the tip portion is inserted into the body 1 and the tip portion is located between the two exhaust port ribs 13 of the communication pipe 8, the exhaust pipe 11 has a straight portion that fits with the end portion of the communication pipe 8 in the frame body 1. Can now be located.

The exhaust pipe 11 is bent from the bent portion to the frame body 1.
Since it is located outside the back plate 1a, the minimum dimension between the frame body 1 and the wall surface can be reduced by the dimension of the straight portion for connecting the exhaust pipe 11, and for example, the straight portion of the exhaust pipe 11 can be formed. When the distance is 3 cm, the conventional frame 1 and the wall surface had a minimum dimension of 12 cm, but could be narrowed to a distance of 9 cm.
The same effect as when the depth dimension of the frame body 1 was narrowed was obtained.

[0025]

As described above, according to the present invention, the conventional frame 1 is used.
The exhaust port attached to the heat exchanger 7 is constituted by the end portion of the connecting pipe 8 attached to the heat exchanger 7, and the fixing plate 14 for stopping a large movement of the end portion in the front-rear direction is attached to the frame body 1. Therefore, the displacement of the exhaust port 3 can be kept to a minimum, and the force at the time of mounting the exhaust pipe 11 can be sufficiently endured.

Further, the number of parts is greatly reduced, the material cost is reduced, and the number of assembling steps can be greatly reduced as compared with the case where many parts such as a conventional bracket are used.

Further, in the conventional exhaust passage structure, each component is fixed as is apparent from the structure in which the exhaust port 3 is fixed to the frame body 1. Therefore, when the component receives heat and expands or contracts, it produces an abnormal sound. There is a risk of causing cracks or cracks due to thermal strain due to local stress. However, in the exhaust passage of the present invention, the heat exchanger 7 and the connecting pipe 8 are fixed, and the other portions do not have a strong fixed portion such as the connecting portion with the exhaust pipe 11, so that cracks due to thermal strain or The cracks and abnormal noises that are offensive to the ear do not occur during use, and the operator can now use the product with peace of mind.

In particular, since the fixing plate 14 and the exhaust pipe fixing plate 16 are integrally formed and moved by sliding to a predetermined position to be mounted, the retaining mechanism for the exhaust pipe 11 can be constructed at the same time. The work process has been greatly improved.

Further, it is extremely difficult to reduce, for example, the depth dimension of the frame body 1 of the combustor in a combustor which has recently been made compact, but in the present invention, the fixing plate 14 and the exhaust pipe fixing plate 16 are used. By specifying the shape of, the linear portion for mounting the exhaust pipe 11 can be positioned in the frame body 1, and the shape of the frame body 1 can be changed by narrowing the required space between the frame body 1 and the wall surface. The same effect as that obtained by substantially reducing the depth dimension can be obtained without any change, and the recent demand for compacting the combustor can be satisfied.

[Brief description of drawings]

FIG. 1 is a lateral cross-sectional view of a main part showing an exhaust port and an exhaust pipe fixing portion of an embodiment of the present invention as seen from a bottom surface.

FIG. 2 is a longitudinal sectional view of an essential part of the embodiment of FIG. 1, which shows an exhaust port portion from the rear.

FIG. 3 is a lateral cross-sectional view of an essential part showing an exhaust port and an exhaust pipe portion of another embodiment of the present invention as seen from the bottom surface.

FIG. 4 is a vertical cross-sectional view of a main part of the embodiment of FIG.

5 is a perspective view of parts used in the embodiment of FIG. 1. FIG.

6 is a perspective view of parts used in the embodiment of FIGS. 1 and 3. FIG.

FIG. 7 is a vertical sectional view of an intake / exhaust type combustor for carrying out the invention product.

[Explanation of symbols]

 1 Frame 2 Inlet 3 Exhaust 4 Burner 5 Combustion Fan 6 Convection Fan 7 Heat Exchanger 8 Connecting Pipe 9 Intake / Exhaust Top 10 Intake Pipe 11 Exhaust Pipe 12 Opening 13 Exhaust Rib 14 Fixing Plate 14a Locking Part 15 Exhaust Pipe Rib 16 Exhaust pipe fixing plate 16a Opening 17 Fall prevention plate 18 Air passage 19 Combustion chamber

Claims (3)

[Claims] 1. A suction port 2 for sucking combustion air into a frame 1.
And an exhaust port 3 for discharging the combustion gas in the frame 1,
For exchanging heat between the combustion fan 5 for supplying the air sucked from the intake port 2 to the burner 4, the combustion gas generated in the burner 4, and the room air blown into the frame 1 by the convection fan 6. A heat exchanger 7 and a communication pipe 8 that connects the exhaust port 3 provided in the frame 1 to the heat exchanger 7 are provided, and the intake port 2 and the exhaust port 3 are connected to an intake / exhaust top 9 that communicates outdoors. In an intake / exhaust type combustor that is connected by intake / exhaust pipes 10 and 11, the burner 4 burns using outdoor air, and releases the combustion gas to the outside, the exhaust port 3 is from an opening 12 provided in the frame body 1. It is formed by the tip of the protruding connecting pipe 8 and is adjacent to the end of the connecting pipe 8.
A fixed plate 14 having a plurality of exhaust port ribs 13 and having a locking portion 14a projecting between the two exhaust port ribs 13 is attached to the frame 1 at the periphery of the opening 12, and the exhaust pipe An exhaust pipe rib 15 is formed at an end portion of the exhaust pipe 11, and an exhaust pipe fixing plate 16 having an opening 16a through which the exhaust pipe rib 15 penetrates is attached to the frame body 1, and the exhaust pipe 1 is attached to the exhaust port 3.
An exhaust pipe fixing structure for an intake-exhaust type combustor, wherein a retaining prevention plate 17 is attached between the outside of the exhaust pipe rib 15 and the exhaust pipe fixing plate 16. 2. An L-shaped connecting pipe 8 extending downward from the heat exchanger 7 is provided, and locking portions 14a of the fixing plate 14 projecting between the two exhaust port ribs 13 are provided at two symmetrical positions. Further, the exhaust pipe fixing plate 16 is formed integrally with the fixing plate 14, the opening 16a of the exhaust pipe fixing plate 16 is opened downward, and the fixed plate 14 and the exhaust pipe fixing plate 16 which are integrated are arranged from the upper side to the lower side. While sliding the locking part 14a, the two exhaust port ribs 13
The exhaust pipe fixing structure for an intake / exhaust type combustor according to claim 1, wherein the exhaust pipe fixing structure is located between the two. 3. The opening 12 provided in the frame 1 has a quadrangular shape, and the locking portion 14a of the fixing plate 14 can be inserted into the frame 1 from the upper portion of the opening 12 and is integrally fixed. The plate 14 and the exhaust pipe fixing plate 16 are locked into the frame 1 by a locking portion 14a.
Slide the frame body from above to the bottom with the frame inserted.
The exhaust pipe fixing structure for an intake / exhaust type combustor according to claim 2, wherein a locking portion 14a is positioned between the two exhaust port rings 13 inside.