JPH0252781B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a noise prevention device for an outdoor gas water heater.

Configuration of a conventional example and its problems The operation noise prevention device in a compact outdoor gas water heater 1, such as a conventional combustion equipment installed in a pipe space, will be explained based on drawings. For example, as shown in FIG. In many cases, a structure is provided in which a silencing chamber 4 is provided between the exhaust top 2 and the exhaust top 3, or the fan rotation speed itself has been reduced.

In the case of compact outdoor gas water heaters, the first priority is to reduce the size of the appliance itself.
The space of the silencing chamber 4 as shown in the figure is a drawback, and since high-density combustion is the main elemental technology, it is also difficult to reduce the rotational speed, which is a technical drawback.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks of the conventional apparatus, and aims to provide a noise prevention device that reduces operational noise generated from the main body of the apparatus in an exhaust top of the same size as the conventional apparatus.

Structure of the Invention In order to achieve the above-mentioned object, the noise prevention device of the present invention has a sound absorbing wall vertically disposed on the front side of the front exhaust top of the equipment, and semi-cylindrical sound insulating exhaust guides attached to both horizontal end faces. After flowing into the top horizontally, the flow is split horizontally by sound-absorbing walls installed perpendicular to the flow, and each branch flow reaches the exhaust port along a sound-insulating exhaust guide.

The noise prevention device configured as described above not only has the sound absorption effect obtained by directing exhaust air to a normal sound absorption wall, but also has the performance of reducing operational noise by absorbing noise energy by using a sound insulating exhaust guide. Therefore, the noise prevention device of the present invention has a great noise prevention effect just by being incorporated into an exhaust top of the same size as the conventional one, and has an excellent effect of continuing good combustion.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The structure of this embodiment will be explained with reference to FIGS. 2 and 3. An exhaust top 2 is attached horizontally to the front of the combustion equipment main body in connection with an exhaust holder 1, and the inside of the exhaust top includes a sound-insulating exhaust guide 3, a sound-absorbing material retainer 4, This is a noise prevention device made of sound absorbing material 5. To explain this device with reference to Figs. 3 and 4, the exhaust gas flows horizontally from the exhaust fan outlet, enters the exhaust chamber 7, hits the sound absorbing material 5 fixed to the back surface of the exhaust top 2 by the sound absorbing material presser 4, and is divided horizontally. After that, the sound absorbing material 5 flows along the surface of the cylindrical sound insulating exhaust guide 3 provided on both horizontal end surfaces and exits through the exhaust port 6.

The operation of the above configuration will be explained below.
In the noise prevention device configured as described above, not only the operating noise generated through the combustion chamber and the exhaust fan is applied to the sound absorbing material 5 installed perpendicularly to the exhaust flow for the most effective sound reduction, but also the noise is reduced. The exhaust gas flows along the exhaust guide 3, which has a sound insulation effect and is designed not to inhibit combustion, and further absorbs noise energy, resulting in a large noise reduction effect.

As described above, according to this embodiment, since the noise prevention device is attached to the top of the combustor exhaust, it has excellent effects such as achieving a significant reduction in operating noise with a compact shape while maintaining good combustion.

Effects of the Invention As described above, according to the present invention, it is possible to reduce noise without impairing combustion performance in compact outdoor combustion equipment, such as pipe shaft space installed types, where air supply and exhaust are inevitably carried out from the front of the equipment. Obtainable.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing the structure of a conventional outdoor gas water heater without a noise prevention device, and Fig. 2 is a cross section of an outdoor gas water heater equipped with a noise prevention device according to an embodiment of the present invention. Figure 3 is an exploded perspective view of the exhaust top equipped with the same noise prevention device, Figure 4 a and b
These are a plan sectional view and a front view of an exhaust top equipped with the same noise prevention device. 1... Gas water heater, 2... Exhaust fan, 3...
Exhaust top, 4...muffling chamber, 5...exhaust receiving plate,
6...Front plate, 7...Sound insulating exhaust guide, 8...Sound absorbing material presser, 9...Sound absorbing material, 10...Exhaust port, 11
...Exhaust chamber.

Claims (1)

[Claims] 1. The upward exhaust from the water heater is discharged horizontally in the front of the appliance, and an exhaust chamber is provided upstream of the appliance in the front, and a sound-absorbing wall is provided in the exhaust chamber to horizontally divert the exhaust, and the diverted exhaust is A noise prevention device for a water heater configured to emit each flow along a wall surface attached to both horizontal end surfaces of a sound absorbing wall.