JPH1026421A - Combustion apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhaust waste gas always correctly to an intake and exhaust duct. SOLUTION: A combustion apparatus is adapted such that an exhaust cylinder 6 fro exhausting waste gas from a burner is provided in the state where an exhaust hole 6e in the tip end of the exhaust cylinder 6 is protruded by a set amount laterally with respect to the inside of an intake and exhaust exhaust duct D provided in a building such that an air vent is directed upward. In the combustion apparatus, the exhaust hole 6e is opened upward. Further, the exhaust cylinder 6 is provided in a slanting attitude where the tip end is located upward. Furthermore, connection part 7 is provided on the side of an apparatus body M for engaging and connecting a base end side of the exhaust cylinder 6, and the connection part 6 is constructed such that the exhaust cylinder 6 is engaged and connected in a slanting attitude where the to end thereof is located upward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust pipe for discharging exhaust gas from a burner, in which an exhaust port at the tip of the exhaust pipe is connected to an inside of a supply / exhaust duct provided in a building so that a ventilation direction is directed upward. , A combustion device provided in a state of being protruded by a set amount in a lateral direction.

[0002]

2. Description of the Related Art In a multi-family house, a common supply / exhaust duct is provided along the walls of each of the houses arranged vertically so that the ventilation direction is upward, and the supply / exhaust duct is used to burn to a burner. A so-called common supply / exhaust system that supplies air and exhausts exhaust gas from a burner to its supply / exhaust duct may be employed. In a combustion device for a common supply / exhaust system, prevent exhaust gas from flowing back to the device body.
The exhaust port of the exhaust pipe is set by a set amount (specifically, 40 to 5
0 mm) It is necessary to position it so as to protrude laterally with respect to the inside of the supply / exhaust duct. Conventionally, the exhaust port at the tip of the exhaust cylinder is opened horizontally or downward.

[0003]

In a multi-family housing, the operating condition of the combustion device changes, for example, the number of combustion devices used simultaneously changes. In conventional equipment,
When the usage state of the combustion device changes, for example, so that the number of the combustion devices used simultaneously increases, and the pressure in the air supply / exhaust duct increases, exhaust gas from the house on the lower floor is exhausted. There is a possibility that exhaust gas may flow into the exhaust pipe and exhaust gas may not be properly discharged to the supply / exhaust duct. If the exhaust gas cannot be discharged properly, a problem that the combustion of the burner becomes unstable may occur, and in some cases, a problem that the burner may extinguish may occur, and improvement has been desired. Note that such a combustion device is provided with a safety device that detects the extinction and stops the fuel supply even if the burner is extinguished.

The present invention has been made in view of such circumstances, and an object of the present invention is to enable exhaust gas to be always properly discharged to a supply / exhaust duct.

[0005]

According to the first aspect of the present invention, since the exhaust port is open upward,
It is possible to prevent the exhaust gas from the house on the lower floor from flowing into the exhaust stack from the exhaust port. In addition, the exhaust gas flowing through the exhaust pipe is smoothly discharged from the exhaust port to the supply / exhaust duct while being pulled by the upward airflow in the supply / exhaust duct. Therefore, since the exhaust capability of discharging exhaust gas to the supply / exhaust duct can be improved as compared with the related art, regardless of a change in the usage state of the combustion device, such as a change in the number of combustion devices used at the same time, Exhaust gas can now always be properly discharged to the supply / exhaust duct. As a result, it is possible to reliably prevent the problem that the combustion of the burner becomes unstable due to the inability to properly discharge the exhaust gas to the air supply / exhaust duct.

According to the second aspect of the present invention, since the exhaust pipe is provided in an inclined position in which the tip is located upward, the draft effect of the exhaust gas in the exhaust pipe is improved. The gas flows smoothly in the exhaust pipe toward the exhaust port located above, and is discharged to the supply / exhaust duct. Therefore, it has become possible to further improve the exhaust capacity of the exhaust gas.

According to the third aspect of the present invention, the exhaust cylinder is positioned at the upper end simply by fitting and connecting the base end side of the exhaust cylinder to the connection portion provided on the apparatus main body side. It can be provided in an inclined posture. Therefore, the construction work in which the exhaust pipe is provided in the inclined posture in which the tip is located upward can be simplified.

According to a fourth aspect of the present invention, first, the air supply cylinder is disposed in the opening of the wall, and then the exhaust cylinder is positioned in the air supply cylinder disposed in the opening. By adjusting the protruding amount with respect to the apparatus main body, until the abutting portion provided on the exhaust cylinder is received by the receiving portion provided on the air supply cylinder and the movement to the air supply / exhaust duct side is restricted.
When inserted into the air supply cylinder, in this state, the exhaust port of the exhaust cylinder is positioned at a set position, that is, a position protruding laterally with respect to the inside of the air supply / exhaust duct by the set amount. Therefore, the work of providing the exhaust pipe with the exhaust port at the tip positioned at the set position can be simplified.

According to the fifth aspect of the present invention, in a state where the abutting portion is received by the receiving portion, the two can be connected by the connecting means, so that the exhaust cylinder can be reliably provided for a long period of time. The installation posture and the installation position of the exhaust port can be maintained. At the time of inspection, the exhaust pipe can be removed by switching the coupling means to the release state, so that inspection is easy.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, in a middle- and high-rise apartment house, a common supply / exhaust duct D is provided along the wall W of each house vertically arranged so that the ventilation direction is upward. Further, an opening H for arranging the supply cylinder 5 and the exhaust cylinder 6 of the combustion device is provided in the wall W in a state of communicating with the supply / exhaust duct D.

As shown in FIG. 1, a bath water heater as an example of a combustion apparatus is detachably connected to an apparatus main body M to supply combustion air from a supply / exhaust duct D to a burner 3. 5 is disposed in the opening H provided in the wall W,
The exhaust pipe 6 for discharging the exhaust gas from the burner 3 to the air supply / exhaust duct D is located inside the cylinder of the air supply cylinder 5, and the apparatus main body M
The main body M is detachably connected to the apparatus main body M in such a manner that the amount of protrusion relative to the main body M can be adjusted. By adjusting the amount of protrusion of the exhaust pipe 6 with respect to the apparatus main body M, the exhaust port 6 at the tip of the exhaust pipe 6 is adjusted.
The exhaust port 6e is configured to be positioned so that e projects by a set amount L (specifically, 40 to 50 mm) to the inside of the supply / exhaust duct W.

In the present invention, the exhaust port 6e at the front end of the exhaust pipe 6 is opened upward, and the exhaust pipe 6 is provided in an inclined posture in which the front end is located upward.

An elbow 7 is provided on the side of the apparatus main body M as a connecting portion for fittingly connecting the base end side of the exhaust pipe 6.
The elbow 7 is configured so that the exhaust pipe 6 is fitted and connected in an inclined posture in which the tip is located upward.

Referring to FIG. 1, the overall configuration of the bath water heater will be described. The bath water heater has a combustion chamber 2 having an open bottom surface disposed inside an outer casing 1, a burner 3 disposed at an opening at the bottom of the combustion chamber 2, and a burner disposed inside the combustion chamber 2. 3 and burner 3
A heat exchanger 4 for water heating is provided so as to be heated at. The cylindrical air supply cylinder 5 is configured to be detachably provided on the outer casing 1 with screws 17 in a state of communicating with the inside thereof. An elbow 7 is provided in an upper part of the combustion chamber 2 in communication with the inside thereof, and a cylindrical exhaust cylinder 6 having a smaller diameter than the supply cylinder 5 is located on the cylinder inner side of the supply cylinder 5. The base end is fitted and connected to the elbow 7. The exhaust cylinder 6 is configured to be detachable from the elbow 7 by screw-type fastening means 8.

1, combustion air is introduced from the air supply / exhaust duct D into the exterior casing 1 through the air supply cylinder 5 and is supplied from the opening at the bottom of the combustion chamber 2 as shown by the white arrow in FIG. The exhaust gas of the burner 3 is supplied from the combustion chamber 2 through the elbow 7 and the exhaust pipe 6 through the exhaust port 6 e at the end of the exhaust pipe 6, as shown by the black arrow in FIG. It is configured to discharge to D.

Hereinafter, each part will be described in detail. FIG.
As shown in FIG. 1, a hot water tap 11 connected to a faucet 9 and a shower fixture 10 and a bathtub (not shown) are provided on an exterior casing 1.
There are provided two circulation pipes 12 for circulating water in the inside, a water supply port 13 and the like. Burner 3 is hot water burner 3A
The heat exchanger 4 is composed of a hot water supply heat exchanger 4A heated by the hot water supply burner 3A and a bath water heated by the bath heating burner 3B. It consists of a heat exchanger 4B. The inlet of the hot water supply heat exchanger 4 </ b> A is connected to the water supply port 13, and the outlet is connected to the hot water tap 11. The inlet and outlet of the bath heat exchanger 4B are connected to the circulation pipes 12, respectively.

Next, the supply cylinder 5 and the exhaust cylinder 6 will be described with reference to FIGS. The description of the air supply cylinder 5 will be added. The air supply cylinder 5 is provided with a packing 15, an opening at an opening of a mounting frame 14 mounted on the indoor side of the wall W.
16 is provided so as to be internally fitted with the interposition thereof. Further, a support plate 18 for supporting the exhaust cylinder 6 in a mounted state is attached inside the cylinder of the air supply cylinder 5.

The exhaust cylinder 6 will be described. Exhaust stack 6
Is constituted by a base cylinder part 6A and a front cylinder part 6B which are slidably fitted to each other, and the tip of the front cylinder part 6B functions as an exhaust port 6e, and the base end of the base cylinder part 6A Is fitted and connected to the elbow 7. Then, by adjusting the overlapping length by sliding the source cylinder part 6A and the front cylinder part 6B, the amount of protrusion of the exhaust cylinder 6 with respect to the apparatus main body M is adjusted.

The elbow 7 has a pedestal 7A at its base 7A.
The base portion 7 has a relative positional relationship such that the axis of the portion where the exhaust pipe 6 is fitted and connected in the pipe portion 7B is inclined upward by about 5 ° with respect to the horizontal direction when the base portion 7 is mounted on the base portion 7.
A and the pipe portion 7B are welded. Therefore, when the exhaust pipe 6 is fitted and connected to the elbow 7, the exhaust pipe 6 has an inclined position in which the axis of the exhaust pipe 6 is inclined upward by about 5 ° with respect to the horizontal direction, so that backflow of exhaust gas can be prevented. As a result, the exhaust gas can be smoothly discharged.

Next, the contact portion 19 and the receiving portion 20
Will be described with reference to FIGS. 1 to 4. The abutting portion 19 is formed by bending a long plate-like body into a U-shape, and has both ends of the U-shape at the end of the front cylinder portion 6B in a state of crossing the exhaust port 6e. It is attached.
Further, the abutting portion 19 is formed with a hole 19h for inserting a butterfly screw 22 constituting a coupling means F described later.

The receiving portion 20 is formed by molding a channel member into an L-shape, and has one side of the L-shape for inserting a butterfly screw 21 for attachment along the longitudinal direction. A slot 20n for forming a butterfly screw is formed in the other side of the slot so that a butterfly screw 22 constituting the coupling means F, which will be described later, can be screwed at any position in the longitudinal direction. It is. And the receiving part 20
Is positioned on the inner surface of the air supply cylinder 5 so that the longitudinal direction of the side on which the butterfly screw screw-in slit 20n is formed is oriented vertically, and the butterfly screw 21 is inserted into the elongated hole 20s to form the air supply cylinder 5. By screwing into the inner surface, the receiving portion 20 is
To be mounted on the
With s, the receiving portion 20 is moved in the cylinder longitudinal direction of the air supply cylinder 5 so that the mounting position can be adjusted. That is, the receiving position at which the receiving portion 20 receives the abutment portion 19 is configured to be freely adjustable in the longitudinal direction of the air supply cylinder 5.

Next, a description will be given of the connecting means F for connecting the contact portion 19 and the receiving portion 20 in a state where the contact portion 19 is received by the receiving portion 20. The coupling means F includes a butterfly screw 22 and a butterfly screw screwing slit 20n formed in the receiving portion 20 so that the butterfly screw 22 can be screwed at any position in the longitudinal direction.

That is, the coupling means F is provided so as to be freely switchable between a coupling state and a releasing state for releasing the coupling. or,
Even if the amount of protrusion of the exhaust stack 6 with respect to the apparatus main body M changes and the relative positional relationship between the abutting portion 19 and the receiving portion 20 changes in the vertical direction, the connecting means F can be connected so that they can be connected.
Is configured such that the coupling position can be changed and adjusted in the vertical direction.

Hereinafter, a procedure for disposing the supply cylinder 5 and the exhaust cylinder 6 in the opening H of the wall W will be described with reference to FIG. First, the mounting frame 14 is mounted on the wall W. Next, in a state where the air supply cylinder 5 is separated from the apparatus main body M, the air supply cylinder 5 is provided inside the opening of the mounting frame 14 with the packings 15 and 16 interposed therebetween. At that time, when the apparatus main body M is installed at a predetermined position, the air supply cylinder 5 is positioned so that the air supply cylinder 5 can be attached to the outer casing 1.

Next, loosen the butterfly screw 21 and
0 is moved in the longitudinal direction of the cylinder, and the tip thereof moves laterally with respect to the inside of the supply / exhaust duct W by an amount corresponding to the set amount and the amount of projection of the abutting portion 19 from the tip of the exhaust cylinder 6. After being positioned at a position where it protrudes in the direction, the butterfly screw 21 is tightened to fix the receiving portion 20 to the air supply cylinder 5.

Next, while the exhaust pipe 6 is separated from the apparatus main body M, the exhaust pipe 6 is inserted into the air supply cylinder 5 and mounted on and supported by the support plate 18 until the abutting section 19 hits the receiving section 20. Next, the butterfly screw 22 is
, And screwed into the butterfly screw screwing slit 20 n of the receiving portion 20 to fix the exhaust cylinder 6 to the air supply cylinder 5.

Next, by adjusting the overlapping length by sliding the main cylinder portion 6A and the front cylinder portion 6B, the amount of protrusion of the exhaust cylinder 6 with respect to the apparatus main body M is adjusted. The base end is fitted and connected to the elbow 7 and fixed to the elbow 7 by the screw type fastening means 8.

Next, the air supply cylinder 5 is fixed to the outer casing 1 with screws 17.

[Another Embodiment] Next, another embodiment will be described. (A) The inclination angle when the exhaust pipe 6 is provided in an inclined position in which the exhaust port 6e at the tip thereof is located upward is not limited to about 5 ° exemplified in the above embodiment, but is a supply / exhaust duct. It can be changed appropriately according to the exhaust performance of D or the like.

(B) The exhaust pipe 6 is connected to the exhaust port 6 at the tip thereof.
Various configurations other than the configuration exemplified in the above-described embodiment are possible as a specific configuration for providing e in an inclined posture in which it is located above. For example, the exhaust cylinder 6 is configured to be connected to the apparatus main body M in a state in which the exhaust cylinder 6 can swing up and down around its base end, and the inclination angle when the exhaust cylinder 6 is provided in an inclined posture is adjusted. You may comprise as possible. In this case, the inclination angle of the exhaust pipe 6 can be adjusted to an angle at which the exhaust gas is discharged most smoothly according to the exhaust performance of the air supply / exhaust duct D. In addition, as a specific configuration for enabling the exhaust pipe 6 to swing up and down around its base end, for example, a bellows-shaped pipe can be used.

(C) The upward angle when the exhaust port 6e is opened upward can be set as appropriate. When increasing the upward angle without increasing the inclination angle of the exhaust pipe 6, for example, the distal end side of the exhaust pipe 6 may be bent upward. Or, the tip of the exhaust pipe 6
In a side view, the lower side may be formed in an inclined shape that is located forward.

(D) In the above embodiment, the exhaust stack 6
Is provided in an inclined position in which the exhaust port 6e at the tip thereof is located upward. Alternatively, the exhaust pipe 6 is provided in a horizontal position in which the axis of the exhaust pipe 6 extends in the horizontal direction. May be opened upward.

(E) The contact portion 19 and the receiving portion 2
Each of the shapes can be various shapes other than the shapes exemplified in the above embodiment. For example, if the surfaces of the abutting portion 19 and the receiving portion 20 that come into contact with each other are formed in a wide shape, and the relative positional relationship between the abutting portion 19 and the receiving portion 20 is slightly shifted in the circumferential direction, the abutting portion 19 is You may comprise so that the receiving part 20 may receive.

(F) The position where the contact portion 19 is installed on the exhaust cylinder 6 and the position where the receiving portion 20 is installed on the air supply cylinder 5 can be changed. For example, the attaching unit 19
It may be installed so that it can be received by the receiving part 20 at a position retreated from the exhaust port 6e to the indoor side by the set amount. In this case, the receiving part 20 is
May be installed so as to be received at a position overlapping the inner wall surface of the air supply / exhaust duct D in a top view, so that the adjustment of the receiving position is facilitated.

(G) The receiving part 20 is the contact part 1
In the above-described embodiment, the receiving portion 20 is configured to be movable in the cylinder longitudinal direction of the air supply cylinder 5 as a configuration for making the receiving position for receiving the cylinder 9 adjustable in the cylinder longitudinal direction of the air supply cylinder 5. Was exemplified. Alternatively, the contact portion 19 may be configured to be movable in the longitudinal direction of the exhaust cylinder 6.

(H) In the above embodiment, the receiving portion 20 can be moved in the cylinder longitudinal direction of the air supply cylinder 5 by using the butterfly screw 21 and the elongated hole 20 s formed in the receiving portion 20. The case of the configuration is illustrated. Instead, in the state of being elastically urged in the contacting direction, a contacting means for contacting the receiving portion 20 is provided, and the receiving portion 20 is moved in the cylinder longitudinal direction against the elastic urging force of the contacting means. You may comprise so that it may be movable and the position of the receiving part 20 may be hold | maintained by the said elastic biasing force. In this case, it is not necessary to fix the receiving portion 20 with the butterfly screw 21 or the like, so that the operation can be further simplified.

(4) The receiving portion 20 is attached to the contact portion 1
9 may be provided in a state where the receiving position is fixed to the air supply cylinder 5. In this case, when disposing the air supply cylinder 5 in the opening H, the air supply cylinder 5 may be moved in the cylinder longitudinal direction to adjust the receiving position.

(N) Receiving part 20 and contact part 1
Various configurations other than the configurations exemplified in the above embodiment are possible for the configuration for making each of the nine units detachable from the apparatus main body M. For example, a configuration that does not require a screw-type or other fastening means, such as a concavo-convex engagement means that automatically engages by rotation, may be employed.

(G) Abutting section 19 and receiving section 20
Various configurations other than the configuration exemplified in the above-described embodiment are possible for the specific configuration of the coupling unit F that switches between the coupling state and the release state for releasing the coupling. For example, a configuration that does not require a fastening means such as a thumb screw 22 such as an uneven engagement means that automatically engages with an elastic urging force may be employed.

(ヲ) Various configurations other than the configuration exemplified in the above embodiment are possible for the configuration for making the coupling position of the coupling means F changeable in the vertical direction. For example, the receiving portion 20 has a butterfly screw screwing slit 2.
Instead of forming 0n, a nut for screwing the butterfly screw 22 may be provided on the receiving portion 20 so as to be slidably movable in the vertical direction.

(C) As a specific configuration for adjusting the amount of protrusion of the exhaust cylinder 6 with respect to the apparatus main body M, the sliding of the source cylinder part 6A and the tip cylinder part 6B illustrated in the above-described embodiment causes their overlap. Various configurations other than the configuration for adjusting the length are possible. For example, a bellows portion that can adjust the length of the exhaust pipe 6 may be provided.

(F) In the above-described embodiment, an example has been described in which the present invention is applied to a bath water heater provided with both a hot water supply function and a bath heating function. Instead, the present invention can be applied to a hot water supply device having only a hot water supply function or a bath kettle having only a bath heating function.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state where a combustion device is installed.

FIG. 2 is a longitudinal sectional view showing the vicinity of a supply cylinder and an exhaust cylinder.

FIG. 3 is a perspective view showing a configuration of a supply cylinder and an exhaust cylinder.

FIG. 4 is an exploded perspective view showing the configuration of a supply cylinder and an exhaust cylinder.

FIG. 5 is an exploded perspective view showing an installation configuration of an exhaust pipe.

[Explanation of symbols]

 Reference Signs List 3 Burner 5 Air supply cylinder 6 Exhaust cylinder 6e Exhaust port 7 Connecting part 19 Applying part 20 Receiving part D Supply / exhaust duct F Coupling means H Opening M Device body W Wall

Claims (5)

[Claims] An exhaust pipe for discharging exhaust gas from a burner has an exhaust port at a tip thereof set to a predetermined amount in a lateral direction with respect to an inside of a supply / exhaust duct provided in a building so that a ventilation direction is upward. A combustion device provided so as to protrude only therethrough, wherein the exhaust port is open upward. 2. The combustion apparatus according to claim 1, wherein the exhaust pipe is provided in an inclined posture in which a tip is located upward. 3. A connecting portion for fitting and connecting a base end side of the exhaust pipe is provided on an apparatus main body side, and the connecting section fits the exhaust pipe in an inclined posture in which a distal end thereof is located upward. 3. The system according to claim 2, wherein the connection is established.
A combustion device as described. 4. An opening for arranging the exhaust pipe is provided in a wall portion of the building adjacent to the air supply / exhaust duct in a communication state with the air supply / exhaust duct. An air supply cylinder for supplying combustion air from the air supply / exhaust duct to the burner is disposed in the opening, and the exhaust cylinder is located on the cylinder inner side of the air supply cylinder, and a projecting amount with respect to the apparatus body is reduced. In an adjustable state, the exhaust port protrudes from the inside of the air supply / exhaust duct by the set amount in a state in which the exhaust port protrudes from the inside of the air supply / exhaust duct, and receives a contact portion provided in the exhaust pipe, The combustion device according to any one of claims 1 to 3, wherein a receiving portion for restricting movement of the exhaust cylinder to the inside of the supply / exhaust duct is provided in the supply cylinder. 5. In a state in which the abutting portion is received by the receiving portion, a connecting means for connecting the abutting portion and the receiving portion is provided so as to be switchable between a connected state and a released state for releasing the connection. The combustion device according to claim 4, wherein