JPS6242273Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an exhaust stack mounting device for a forced exhaust combustor, and more specifically, to a base end of an exhaust stack that extends outdoors over an exhaust collection chamber provided within the device body. This relates to a device for attaching.

For forced exhaust water heaters as shown in Figure 1, when the appliance body M is installed on an indoor wall in a kitchen, washroom, etc., the appliance body M is usually installed for convenience of use.
Install it so that the operation part is at the required height h = 1.2 m to 1.5 m, and then connect the base end of the exhaust pipe b to the upper part of the exhaust collection chamber a provided in the main body M of the device. However, a method generally adopted is to extend the exhaust pipe b so that the open end faces the outdoors. The base end of the exhaust pipe b is attached as shown in FIG. Align it with the exhaust hole and tighten the multiple mounting screws c.

In this way, in the conventional installation of the exhaust stack b, the worker hangs a tool such as a screwdriver toward the top of the exhaust collection chamber from a high position on a stand, etc., and turns the screws. Moreover, the installation condition tends to vary depending on the operator, and there is a risk that the connection and fixation will be incomplete.
In addition, since the mounting screw c protrudes into the exhaust gas collection chamber a, the high temperature (approximately 180 degrees Celsius) combustion exhaust gas flowing inside the exhaust gas collection chamber a comes into direct contact with the mounting screw c, causing the mounting screw c to seize. In some cases, it became impossible to remove the exhaust pipe b when replacing equipment, inspecting, cleaning, etc.

The present invention improves the above-mentioned problems and allows the base end of the exhaust pipe to be attached and detached from the exhaust collection chamber with a simple operation.Moreover, the work can be done in a comfortable posture, significantly shortening the work time. Along with letting
It is an object of the present invention to provide an exhaust pipe mounting device that is free from the risk of seizing of mounting screws as in the prior art.

In order to achieve the above-mentioned purpose, this invention
A locking metal fitting having a symmetrical notch is fixed to the rear of the exhaust hole formed in the upper part of the exhaust gas collection chamber, and a machine screw is fixed in a protruding manner to the front surface of the upper part of the exhaust gas collection chamber, and the upper part around the exhaust hole is fixed. A packing is placed on the packing, an exhaust connection tube with a flange is erected on the packing, and further, a vertical piece is provided on the flange with a long hole in a portion corresponding to the machine screw, and a vertical piece is connected to the vertical piece. It becomes a horizontal piece, and there is a U on that horizontal piece.
Stack the pushing metal fittings having the inclined locking parts at the tips of the letter-shaped cutout and the left and right upright edges thereof, and insert the inclined locking part ends into the notches of the locking metal fittings with the tip of the machine screw facing the elongated hole. At the same time, a pointed nut is screwed onto the machine screw, and the screwing of the pointed nut pushes the push-in fitting toward the locking metal fitting, thereby causing the inclined locking portion to be engaged and held in the notch portion of the locking metal fitting. In addition, it is characterized in that it is constructed so that one vertical side can be fixedly held.

The following is a third embodiment of the exhaust stack mounting device of the present invention.
This will be explained based on the diagram and FIG.

3 and 4 A, B, and C show an application of the present invention to the forced exhaust type water heater of FIG. 1, and members having the same functions in the figures are designated by the same reference numerals as in FIG. 1.

In these figures, reference numeral 1 denotes a push-in fitting formed into a bent shape by a vertical piece 1a, a bent piece 1b, and a horizontal piece 1c. In addition, the horizontal piece 1c is formed with a U-shaped notch 1d into which the outer periphery of the exhaust pipe b fits, and U-shaped upright edges 1e on the left and right sides of the U-shaped notch 1d, and inclined locking portions 3 are provided at the tips of the upright edges 1e, respectively. , 3'. Reference numeral 4 denotes an exhaust hole opened in the upper part of the exhaust collection chamber a, and a small protruding edge is provided on the outer periphery of the exhaust hole. Reference numeral 5 designates a locking metal fitting fixed on the exhaust gas collection chamber a at the rear of the exhaust hole 4, and has notches 6, 6' on the left and right sides of which are engaged with the inclined locking parts 3 and 3' of the push-in metal fitting 1. It is set symmetrically. The machine screw 7 is fixed in a protruding manner at a predetermined portion in front of the upper part of the exhaust gas collection chamber a (in the embodiment, the central portion of the exhaust gas collection chamber a). Reference numeral 8 denotes a pointed nut which is screwed onto the machine screw 7, and its rear part is a circular diameter part, and the additional dimension l of this inclined part and the circular diameter part is the width of the bent piece 1b.
It is slightly longer than the l′ dimension. 9 is a packing placed on the outer periphery of the exhaust hole 4. 10
is an exhaust connection tube having a flange 10a having approximately the same diameter as the outer diameter of the packing 9 at its base end, and the outer diameter thereof has a size that allows it to be fitted into the exhaust tube b. Reference numeral 11 denotes a hole provided in the upper part of the instrument main body M, and is located at a position that coincides with the center of the exhaust hole 4. Reference numeral 12 denotes a sealing plate that is fitted into the exhaust pipe b to close the open hole 11.

Next, the installation and removal of the exhaust stack mounting device of the present invention having the above-mentioned configuration will be explained.

When installing exhaust pipe b to a forced exhaust combustor,
First, as shown in Fig. 3, open the front lid of the instrument body M.
M' is removed, a packing 9 is placed on the exhaust collection chamber a so as to surround the exhaust hole 4, and an exhaust connection tube 10 with a flange 10a is erected thereon.
Then, as shown in FIG. 4A, the push-in fitting 1 is pushed in from the front of the instrument body M so as to overlap onto the flange 10a, and the outer periphery of the exhaust connection tube 10 is fitted into the U-shaped notch 1d. The machine screw 7 is made to protrude, and the tips of the inclined locking parts 3, 3' are positioned so as to face the notches 6, 6' of the locking metal fitting 5. Next, as shown in FIG. 4B, when the pointed nut 8 is screwed onto the machine screw 7 and the pointed nut 8 is screwed, the push-in fitting 1 moves as shown by the solid line arrow in the figure and engages the inclined part. The stop portions 3, 3' are fitted into the notches 6, 6' and engaged, and the inclined portion of the pointed nut 8 presses the bent piece 1b downward, and the flange 1
A downward pressing force acts on the 0a surface as shown by the black arrow. As a result, the flange 10a compresses the packing 9 and is temporarily fixed. When the pointed nut 8 is further screwed forward, since the tip of the push-in fitting 1 is already in the locked state, it hardly moves, so the inclined part of the pointed nut 8 bends into the bent piece 1b as shown in FIG. The circular diameter portion rides on the bent piece 1b, and a pressing force is applied as shown by the dotted line arrow in the figure. At this time, since the elongated hole 2 into which the machine screw 7 can be inserted is a vertically elongated hole, it can be pressed downward by the vertical margin of the screw diameter. Therefore, the rear part of the horizontal piece 1c is sufficiently pulled down in the direction of the white band arrow in the figure. This compresses the packing 9 via the flange 10a. Therefore, the exhaust connection pipe 10 is firmly and stably attached onto the exhaust collection chamber a. In this manner, the front cover M' is attached to the instrument body M, and the opening hole 11 in the upper part of the instrument body M is closed by fitting the sealing plate 12 into the above-mentioned exhaust connection pipe 10. The installation of the exhaust pipe b is then completed by fitting and extending the exhaust pipe b into the exhaust connection pipe 10, and fitting the front end of the pipe into a predetermined indoor wall so as to face the outdoors.

Next, if the exhaust pipe b is to be removed from the instrument body M in the above-described state, the procedure described above may be reversed. That is, the front cover M' of the instrument body M is removed, and the sealing plate 12, which is fitted into the exhaust connection tube 10 and closes the open hole 11, is pushed up towards the exhaust tube b side, and then screwed into the machine screw 7. Pointed nut 8
When it is screwed back and removed, and the push-in fitting 1 is pulled out of the device, the engagement between the inclined locking parts 3, 3' and the notches 6, 6' is released, and at the same time, the pressure on the flange 10a surface is also released. The exhaust connection tube 10 can be taken out from the opening hole 11 in the upper part of the instrument body M.

As described above, the exhaust stack mounting device of the present invention provides the following effects.

The present invention consists of a locking metal fitting provided on the exhaust gas collection chamber, a push fitting that engages and holds the locking metal fitting, and a pointed nut that firmly presses the push fitting by screwing. When attaching and removing the equipment to the equipment body, even if the equipment body is installed on a wall, the operator can easily move the base of the exhaust pipe from the front of the equipment in a comfortable working position without having to climb to a high place. The parts can be reliably and easily attached and detached by simple operations, and the working time can be significantly shortened. Furthermore, after it is fixedly installed, there is no place that comes into contact with combustion exhaust gas unlike in conventional screws, so there is no risk of seizure or oxidation corrosion. Therefore, it has the advantage that it can be removed at any time without any trouble, for example, when replacing equipment, inspecting the exhaust pipe, cleaning, etc.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the installation of a forced exhaust water heater to which the present invention is applied, and Figure 2 is a diagram of a conventional exhaust pipe.
FIG. 3 is a partially cutaway perspective view of the inside of the unit. Fig. 3 is an exploded perspective view of part A in Fig. 1 of the exhaust stack mounting device according to the present invention, and Fig. 4 A, B, and C are partially cutaway side cross-sections illustrating the mounting state of the exhaust pipe mounting device of Fig. 3. It is a diagram. M... Appliance body, a... Exhaust collection chamber, b... Exhaust pipe, 1... Push-in fitting, 1a... Vertical piece, 1b
...Bent piece, 1d...U-shaped notch, 2...Long hole, 3, 3'...Slanted locking part, 4...Exhaust hole, 5
... Locking metal fitting, 6, 6' ... Notch, 7 ... Machine screw, 8 ... Pointed nut, 9 ... Packing, 1
0... Exhaust connection pipe, 10a... Flange, 11...
... Opening port, 12... Sealing plate.

Claims (1)

[Scope of utility model registration request] In the exhaust stack of a wall-mounted forced exhaust type combustor, which extends from the top of the exhaust collection chamber in the device body and has its front end opening facing outdoors, there are two holes on the left and right behind the exhaust hole opened at the top of the exhaust collection chamber. A locking fitting having a symmetrical notch is fixed, a machine screw is fixed in a protruding manner to the upper front surface of the exhaust collection chamber, a packing is placed on the upper part around the exhaust hole, and a flange is provided on the packing. An exhaust connection tube is provided upright, and on this flange, there is a vertical piece with a long hole in a position corresponding to the machine screw, and a horizontal piece that is continuous with the vertical piece, and a U-shaped notch is formed in the horizontal piece. Stack a push-in fitting having an inclined locking part at the tip of the part and the right and left upstanding edges thereof, and insert the end of the inclined locking part into the notch of the locking fitting with the tip of the machine screw facing the elongated hole. At the same time, a pointed nut is screwed onto the machine screw, and the screwing of the pointed nut pushes the push-in fitting toward the locking metal fitting, thereby engaging the inclined locking portion with the notch portion of the locking metal fitting. 1. An exhaust stack mounting device for a forced exhaust type combustor, characterized in that the vertical side is fixedly held.