JPH0429228Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application and overview of the invention] The present invention relates to combustion appliances such as water heaters, and in particular, to a combustion equipment such as a water heater, in which an air supply pipe and an exhaust pipe are arranged concentrically and penetrate through a wall surface. This relates to a type of appliance in which a combustion appliance is directly attached to the body, and by improving the attachment of the appliance body and the air supply/exhaust pipe section to the wall plate, the structure can be improved by connecting the air supply/exhaust pipe and the air supply/exhaust section of the appliance. This prevents poor combustion due to poor installation.

[Prior art and its problems] In a forced air supply/exhaust type water heater, an exhaust pipe is housed in the air supply pipe concentrically with the air supply pipe, and combustion air is drawn from the air supply gap between the air supply pipe and the exhaust pipe. A method is adopted in which air is supplied and combustion exhaust is discharged from the other exhaust pipe.

As such a forced air supply/exhaust type water heater, the one shown in FIG. 8 is already known. In this conventional type, a heat exchanger 11 is disposed above the combustion chamber 1, and A gas burner B is disposed below the heat exchanger 11, and a discharge port of a blowing fan 12 is located below the gas burner B.

An exhaust box 18 is formed further above the heat exchanger 11.
An opening 13 for connecting an exhaust pipe is formed in the rear wall of 8,
A working opening 15 closed by a cover plate 14 is formed in the front wall.

Further, the combustion chamber 1 is housed in a casing consisting of a flat box-shaped rear case 16 that can be separated into two parts, front and rear, and a flat box-shaped front case 17 overlapped with the open part of the casing. The combustion chamber 1 is fixed to the rear case 16, and a passage formed by a gap between the side wall of the rear case 16 and the side wall of the combustion chamber 1 serves as an air supply passage 31 in the appliance. Therefore, when the rear case 16 is fixed to the wall W, the entire instrument is attached to the wall W. and,
An air supply opening 32 that is concentric with the opening 13 is opened in the upper part of the air supply passage 31 opposite the opening 13 .

Next, the structure of the supply/exhaust pipe is such that a supply/exhaust pipe unit consisting of an exhaust pipe 2 and an air supply pipe 3 loosely inserted into the exhaust pipe 2 concentrically is connected to the supply/exhaust opening of the appliance. In this conventional system, a sleeve S is inserted into a through hole formed in a wall surface W, and the supply/exhaust pipe unit is housed and fixed concentrically within this sleeve S, and a bracket 5 attached to a rear case 16 is attached.
As a result, the instrument is installed in a state in which the relative positions of the sleeve S, the opening 13, and the air supply opening 32 are set appropriately. After that, the exhaust pipe 2 is attached to the periphery of the opening 13.
When the flange portion at the upstream end of the air supply pipe 3 is fixed and the flange portion at the downstream end of the air supply pipe 3 is fixed to the opening periphery of the air supply opening 32, the gap between the exhaust pipe 2 and the air supply pipe 3 becomes the air supply passage 31. The inside of the combustion chamber 1 and the inside of the exhaust pipe 2 are connected to each other, and an air supply and exhaust circuit via the combustion chamber 1 is connected to each other.

However, with this conventional device, when the appliance is installed, the supply and exhaust pipes that penetrate through the wall W and the supply and exhaust openings 13 and 32 of the appliance may be misaligned, and the relationship between the two may not be accurate. However, there are problems in that it is difficult to correspond to the air supply and exhaust circuits, and it is difficult to ensure concentricity at the connections of the air supply and exhaust circuits. Additionally, there is a problem in that poor combustion is likely to occur due to this.

In other words, the opening for air supply and exhaust on the equipment side and the wall surface W
In order to ensure concentricity with the air supply and exhaust pipes, the installation position of the equipment must be set accurately in relation to the position of the air supply and exhaust pipes installed on the wall in advance, making the work of installing the equipment extremely difficult. The problem is that it is troublesome.

This is because, in the above-mentioned conventional system, the air supply and exhaust pipe unit consisting of the exhaust pipe 2 and the air supply pipe 3 and the sleeve S
There is no relationship between the installation position of the equipment and the installation position of the equipment, and the installation position of the equipment is set by the worker in advance by measurement to match the air supply and exhaust pipe unit and sleeve installed through the wall surface W. Because you have to.

[Technical Problem] The present invention provides a through-hole H in the wall surface W,
Insert sleeve S and connect exhaust pipe 2 to this sleeve.
The air supply pipe 3, in which the air supply pipe 3 is loosely fitted concentrically, is inserted in a specific positional relationship, and the supply/exhaust pipe unit consisting of the exhaust pipe and the air supply pipe is connected to the supply/exhaust section in the device, and the air supply pipe 3 and the exhaust pipe are connected to each other. A combustion appliance of a type in which air is supplied into a combustion chamber 1 in a casing through a gap passage with a pipe 2, and exhaust gas from the combustion chamber 1 is discharged from the exhaust pipe 2, with the casing attached to a wall surface W. ,
When the casing and the appliance installation wall are installed in close proximity to each other in the ``structure for mounting on the wall of a combustion appliance in which the air supply and exhaust pipe unit and the air supply and exhaust part of the combustion chamber 1 in the casing are connected,'' In order to simplify the installation work so that the relationship between the supply and exhaust pipe part on the wall side and the supply and exhaust part on the equipment side corresponds accurately, and to prevent air tightness of the supply and exhaust route from occurring, we have created a troublesome work. When connecting the exhaust pipe 2 and the air supply pipe 3, the technical problem is to ensure that both the wall side supply and exhaust pipe part and the appliance side supply and exhaust part are at a fixed position relative to the reference point. do.

[Technical Means] The technical means of the present invention taken to solve the above-mentioned technical problem is that the sleeve S is provided with a flange 51 that contacts the wall surface on the end surface on the instrument side, and this flange 51 and its extension. A gauge plate 50 is provided on the instrument, and a bracket 5 corresponding to the gauge plate 50 is connected to the rear case 16 of the instrument.
and the brackets 5 are directly or indirectly engaged with each other or superimposed one on top of the other, and the said brackets 5 in this engaged or superimposed state are
The distance from the gage plate 50 to the center of the air supply/exhaust pipe unit on the instrument side is matched with the distance from the gauge plate 50 to the center of the air supply/exhaust pipe unit, and with the bracket 5 and the gauge plate 50 in the engaged or overlapping state, place the bracket 5 against the wall surface. It was designed to be attached to W.

[Operation] The above technical means of the present invention operates as follows.

In the case of the combustion appliance having the above configuration, a through hole H for air supply and exhaust is formed in the wall surface W, and a sleeve S is inserted into this through hole.
When the flange 51 is inserted, the flange 51 comes into contact with the surface of the wall on the side where the appliance is attached, and the abutment position becomes a predetermined position. When the air supply and exhaust pipe unit consisting of the exhaust pipe 2 and the air supply pipe 3 is inserted into this sleeve S,
The distance between the center of this unit and the gauge plate 50 is a preset distance.

Next, when the gauge plate 50 and the bracket 5 of the instrument are brought into a state of being engaged with each other or overlapping one another front and back, the air supply/exhaust section on the instrument side is located at a predetermined distance from the bracket 5. Become. Since this distance is set in relation to the supply/exhaust pipe unit, in this state, the center of the supply/exhaust pipe unit and the center of the supply/exhaust section on the instrument side exactly coincide.

Thereafter, when the supply and exhaust parts are connected to each other, the appliance is attached to the wall surface with the supply and exhaust circuits accurately connected.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

Simply by attaching the bracket to the wall surface W with the bracket 5 and the gauge plate 50 engaged or stacked one on top of the other, the supply/exhaust section on the appliance side and the supply/exhaust pipe unit are accurately connected. Easy to install. In other words, when the appliance is attached, connection failures and the like are less likely to occur at the connection portions of the air supply and exhaust circuits.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 7.

The apparatus of the embodiment shown in FIG. 1 is a water heater in which the present invention is applied, and has a closed combustion chamber 1. A heat exchanger 11 is provided in the upper part of the combustion chamber, and a gas burner B is provided in the lower part. At the same time, a blowing fan 12 is disposed below the gas burner B, and in these respects, the structure is similar to the conventional one described above.

A mounting flange protrudes from the upper end of the heat exchanger 11, and an exhaust elbow 21 is attached to the mounting flange. The exhaust elbow 21 is provided with a cylindrical portion 23 that opens rearward at its upper portion, and the open end of this cylindrical portion serves as the downstream open end 22 . Further, following the upper end of the combustion chamber 1 and above it,
A rectangular air supply box 33 formed to surround the exhaust elbow 21 with a margin is provided in series, and a removable lid plate 1 is attached to the front plate of this air supply box 33.
The working opening 15, which was closed by 4, opens,
Further, a flat box body 34 constituting an air supply passage 31 is provided in series at the rear end of the bottom portion, and this box body 34 is extended downward. A communication port 35 facing the intake hole 18 of the ventilation fan 12 is opened at the lower end of the box body 34, and the box body 34 is disposed parallel to the combustion chamber 1 as a whole.

Next, the exhaust pipe 2 and the air supply pipe 3 are configured to be expandable and retractable, and the exhaust pipe 2 is a first exhaust pipe 2a on the indoor side.
and a second exhaust pipe 2b on the outdoor side, which are telescopically fitted together. The air supply pipe 3 has a similar configuration, and is composed of a first air supply pipe 3a on the indoor side and a second air supply pipe 3b on the outdoor side, which are telescopically fitted into each other. In addition, in this embodiment, the exhaust pipe 2
In order to ensure concentricity between the first exhaust pipe 2a and the first air supply pipe 3a, and the second exhaust pipe 2b and the second
The air supply pipe 3b includes a plurality of spacers 20, 20 in advance.
Since they are connected and integrated, they can be expanded and contracted in this connected state. A flange portion F is connected to the first air supply pipe 3a, and when this flange portion F is screwed to the periphery of the air supply opening 32 of the air supply box 33 with thumb screws N, One air supply pipe 3a is attached to the rear wall so as to communicate with the inside of the air supply box 33.

The cylindrical portion 23 of the other exhaust elbow 21 and the air supply opening 32 are arranged concentrically in advance, but the downstream open end 22 of this exhaust elbow 21 and the first exhaust pipe 2a As shown in FIG. 1, the connection structure at the upstream end of the annular airtight means 41, 41 such as O-rings and the auxiliary cylinder 4 that holds them are connected to the end of the exhaust elbow 21 and the first exhaust pipe 2a. This auxiliary cylinder 4 has a second
As shown in the figure, a pair of handles 42, 42 are provided. As shown in FIG. 4, this auxiliary tube 4 is previously fitted and held deeply into the first exhaust pipe 2a before the device is attached.

The air supply and exhaust pipe unit consisting of the exhaust pipe 2 and the air supply pipe 3 is housed in a sleeve S that is inserted into a through hole H in a wall W. This sleeve S includes a gauge for attaching the instrument to the wall W. A plate 50 is connected and extends upward from a flange 51 on the indoor side of the sleeve S. Note that, like the exhaust pipe 2 and the air supply pipe 3, this sleeve S is also composed of a first sleeve S ₁ on the indoor side and a second sleeve S ₂ on the outdoor side, and these sleeves fit together elastically. are doing. A flange 51 is connected to the first sleeve _S1 .

The gauge plate 50 positions the mounting position of the bracket 5 connected to the upper part of the rear case 16 on the wall surface W. In this embodiment, the gauge plate 50
The through holes 52 for screwing and the through holes 53 for screwing in the gauge plate 50 are aligned, and the distance from the through hole in the gauge plate 50 to the center of the first exhaust pipe 2a and the The distance from the through hole to the center of the downstream open end 22 is made the same.

For this reason, the rear case 16, the combustion chamber 1 and the box body 3
4, the opening position of the air supply opening 32, and the mounting position of the bracket 5, etc., are of course properly set.

The actual process of supplying and exhausting the appliance having the above-mentioned air supply and exhaust structure through the through hole H formed in the wall surface W and attaching this water heater to the appropriate position on the wall surface W will be described in detail below.

The sleeve S is inserted into the through hole H formed through the wall surface W so that the gauge plate 50 is located at the top. At this time, the sleeve S is the first sleeve S ₁
and a second sleeve _S2 , the total length of the sleeve S can be adjusted depending on the thickness of the wall surface W.

Next, an air supply/exhaust pipe unit consisting of an exhaust pipe 2 and an air supply pipe 3 is inserted into the sleeve in the attached state. The height is adjustable. In addition, in order to ensure concentricity between the sleeve S and the air supply pipe 3, the sleeve S is provided with spacers S ₀ and S ₀
are provided, and both are concentric in the inserted state.

Prior to installing the instrument, the front case 17 is removed, and the bracket 5 connected to the rear case 16 is aligned with the gauge plate 50, and a set screw is used to pass through the through hole for screw fixing formed in both brackets. and screw the bracket 5 to the wall surface W. Thereby, the rear case 16 is fixed to the wall surface W. At this time, the distance L ₁ between the center of the downstream open end 22 and the air supply opening 32 and the bracket 5, and the distance between the center of the exhaust pipe 2 and the air supply pipe 3 and the gauge plate 50.
As shown in FIG. 4, L ₂ are both set to the same dimensions, so in the above-mentioned installed state, the flange portion F accurately faces the air supply opening 32 as shown in the same figure and FIG. 1. Moreover, the auxiliary cylinder 4 fitted onto the open end of the first exhaust pipe 2a is in a position where it can be fitted onto the exhaust elbow 21.

Therefore, the cover plate 14 is removed, and the auxiliary cylinder 4, which has been deeply fitted in advance, is pulled back using the handles 42, 42, and the auxiliary cylinder 4 is externally fitted into the exhaust elbow 21. When pulled back to the position where it fits onto the shaped portion 23, the exhaust elbow 21 and the first
The exhaust pipe 2a will be airtightly connected.

Next, when the peripheral edge of the air supply opening 32 and the flange portion F are screwed together via a gasket using thumbscrews N, N, the first air supply pipe 3a and the air supply box 33 are hermetically connected. After the connection is completed, the cover plate 14
When the front case 17 is attached to the rear case 16, the installation of the instrument is completed.

In this embodiment, the end of the second air supply pipe 3b on the outdoor side is in contact with the outer surface of the wall surface W via a gasket and is fixed by means such as screws, so that the exhaust gas is The pipe 2 and the air supply pipe 3 are on the wall W
Fixed from inside and outside.

Furthermore, regarding the relationship between the gauge plate 50 and the bracket 5, in addition to aligning the through holes 52 and 53 for screw fixing as in the above embodiment, as shown in FIG. Needless to say, it is also possible to adopt a method that regulates the

Alternatively, a combination of a gourd-shaped locking hole 55 and a bolt attached to a gauge plate 50 as shown in FIG. 7 may be used.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a perspective view of the auxiliary pipe 4, and Fig. 3 shows the relationship between the supply and exhaust section on the instrument side, the supply and exhaust pipe unit, the gauge plate 50, and the bracket 5. An explanatory diagram, FIG. 4 is an actual explanatory diagram of the supply/exhaust circuit connection work, FIG. 5 is a front view of the main part showing the relationship between the working opening 15 and the main part of the supply/exhaust circuit connection, and FIGS. 6 and 7. 8 is an explanatory diagram of main parts of another embodiment, and FIG. 8 is an explanatory diagram of a conventional example. In the figure, W...Wall surface, H...Through hole, S...Sleeve,
1... Combustion chamber, 2... Exhaust pipe, 3... Air supply pipe, 5
1...flange, 50...gauge plate, 16...rear case.

Claims (1)

[Scope of utility model registration request] A sleeve S is inserted into a through hole H in a wall surface W, and an air supply pipe 3 into which an exhaust pipe 2 is loosely fitted in a concentric manner is inserted into this sleeve in a specific positional relationship, and the air supply pipe consists of the exhaust pipe and the air supply pipe. Connecting the supply/exhaust pipe unit to the supply/exhaust section in the appliance, supplying air into the combustion chamber 1 in the casing from the gap passage between the supply pipe 3 and the exhaust pipe 2,
This type of combustion appliance discharges the exhaust gas from the combustion chamber 1 through the exhaust pipe 2, and when the casing is attached to the wall surface W, the air supply and exhaust pipe unit and the supply and exhaust part of the combustion chamber 1 inside the casing are connected to each other. In the wall mounting structure of a combustion appliance connected to
A flange 51 that is in contact with the wall surface is provided on the end surface of the sleeve S on the instrument side, and a gauge plate 50 is provided on this flange 51 or an extension thereof.
Place the bracket 5 corresponding to 0 on the rear case 16 of the instrument.
The gauge plate 50 and the bracket 5 are directly or indirectly engaged with each other or overlapped front and back, and the distance from the bracket 5 to the center of the air supply/exhaust part on the instrument side in this engaged or overlapping state. and the distance from the gauge plate 50 to the center of the supply/exhaust pipe unit is made the same, and the bracket 5 is attached to the wall W with the bracket 5 and the gauge plate 50 in the engaged or overlapping state. installation structure.