JPH0617743B2 - Exhaust gas blowing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for blowing combustion exhaust gas such as a hot water supply / room heater or a hot water supply bath unit.

2. Description of the Related Art In recent years, exhaust gas blowing devices have been used in various fuel appliances, but in hot water heaters and hot water bath units,
In order to be placed in a human living environment as a housing facility, it is required to quickly diffuse exhaust gas into the atmosphere and reduce noise.

An example of a conventional exhaust gas blowing device will be described below with reference to the drawings.

2 and 3 show the construction of a conventional exhaust gas blowing device. In FIG. 2, A is an exhaust chamber, which is composed of a rear plate 1 and a front plate 2. 3 is an exhaust fan, 4 is an exhaust fan motor, and the exhaust fan 3
Will be the power of. Reference numeral 5 denotes an exhaust inlet, which is an opening that connects the exhaust fan 3 and the exhaust chamber A to each other, and is located at a position closer to one side than the center in the longitudinal direction of the exhaust chamber A. 6 is an air volume adjusting plate. Reference numeral 7 denotes an exhaust outlet, from which exhaust gas is discharged into the atmosphere. 8 is a sound absorbing material.

Next, FIG. 3 shows a configuration of a conventional hot water supply / room heating machine. Due to the influence of the water storage part, the exhaust gas guide part and the exhaust fan part are offset, and the exhaust connection port 5 is offset in the longitudinal direction from the center of the exhaust gas blowing device.

The operation of the exhaust gas blowing device configured as described above will be described below.

First, as shown in FIG. 3, the exhaust gas generated in the combustion section passes through the heat exchanging section and is sucked into the exhaust fan section by the exhaust gas guiding section.
Be thrown into the center of. Here, the flow of the exhaust gas is as shown by the arrow in FIG. That is, the exhaust gas that has passed through the exhaust inlet 5 from the exhaust fan 3 and entered the exhaust chamber A is suppressed from being directly discharged from the exhaust outlet 7 on the near side by the air volume adjusting plate 6, and is separately discharged to the left and right exhaust outlets 7. It Further, the exhaust gas emitted from the exhaust outlet 7 farther from the exhaust inlet 5 is subjected to the sound absorbing effect by the sound absorbing material.

However, in the above-mentioned configuration, the exhaust fan 3 is very close to the exhaust chamber A, and the distance from the exhaust inlet 5 to the exhaust outlet 7 cannot be made sufficiently long. Since the volume of the exhaust chamber A cannot be increased sufficiently, the combustion noise in the exhaust gas and the noise of the exhaust fan are discharged into the atmosphere without being sufficiently reduced, which causes a problem of noise. In addition, because the exhaust inlet 5 is offset to one side from the center of the exhaust chamber A in the longitudinal direction due to the configuration of the device body, a distance can be offset from the exhaust outlets 7 on both sides, so that the amount of exhaust gas on both sides is Unevenness is likely to occur, and the air volume adjusting plate 6 alone could not be used to adjust the air volume. Further, since the exhaust gas is blown out only in the short axis direction of the exhaust chamber A, there is a problem that the exhaust gas does not spread and it takes time to diffuse into the atmosphere.

In view of the above problems, the present invention provides an exhaust gas blowing device capable of guiding exhaust gas from an exhaust inlet to an exhaust outlet with less resistance, uniformly discharging the exhaust gas in the left-right direction, and improving a silencing effect. To do.

Means for Solving the Problems In order to solve the above problems, an exhaust gas blowing device of the present invention is an exhaust gas guide plate provided at an exhaust inlet part of an exhaust fan of an exhaust chamber, and an exhaust outlet side from an exhaust inlet side. An exhaust chamber side plate having a divergence angle toward, a sound absorbing material provided between both sides of the exhaust inlet of the exhaust chamber and the exhaust outlet facing the exhaust chamber, and a sound absorbing material provided toward the exhaust inlet in the exhaust chamber. It is provided with a component called an air volume adjusting plate.

Operation The exhaust gas blowing device of the present invention has a large sound absorbing function and a function of balancing the amount of exhaust gas from the exhaust outlets on both sides of the exhaust chamber by the air amount adjusting plate having a sound absorbing material. Results in a very high resistance to the flow of exhaust gas. Therefore, an exhaust guide plate having a trumpet-shaped curved surface is provided at the exhaust inlet to reduce the resistance loss when the exhaust gas flow enters the exhaust chamber to reduce the overall resistance. Further, a sound absorbing material is provided on both sides along the exhaust guide plate in the exhaust chamber and on the exhaust outlet side to improve the sound absorbing action. Then, the both side plates in the longitudinal direction of the exhaust chamber are directed toward the exhaust outlet side, and by gradually increasing the divergence angle, the exhaust gas is smoothly guided to the exhaust outlet, and the exhaust gas spreads in the longitudinal direction of the exhaust chamber during exhaust. It aims to accelerate the diffusion of sound and exhaust gas into the atmosphere by making it easier to release. Therefore, a very large sound absorbing effect and diffusion effect can be performed.

Embodiment An exhaust gas blowing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of an exhaust gas blowing device according to an embodiment of the present invention. In FIG. 1, 9 is an exhaust fan and 10 is its fan motor. Reference numeral 11 denotes an exhaust inlet, which is open on one side of the exhaust surface of the exhaust chamber 12 from the center. Reference numeral 13 denotes an exhaust guide plate, which is continuous with the exhaust inlet 11 and formed in a trumpet shape in the exhaust chamber 12. Reference numerals 14a and 14b denote exhaust outlets provided on the left and right sides of the front surface of the exhaust chamber 12, 15 an air volume adjusting plate, 16 an exhaust chamber side plate in the longitudinal direction of the exhaust chamber 12, 17
Reference numerals a, 17b, and 17c are sound absorbing materials provided on the back surface and the front surface of the air volume adjusting plate 15 and the exhaust chamber 12, respectively.
The arrow indicates the flow of exhaust gas.

The operation of the exhaust gas blowing device configured as described above will be described.

First, the exhaust guide plates 13 on both sides of the exhaust inlet 11 reduce the resistance of the exhaust gas when entering the chamber 12. And
By adjusting the length of the air volume adjusting plate 15 in the longitudinal direction of the exhaust chamber 12 and the distance between the exhaust inlet 11, the exhaust air amounts of the exhaust outlets 14a and 14b on both sides can be balanced. In addition, the sound absorbing effect is generated by the sound absorbing materials 17a, 17b, 17c. Further, the exhaust chamber side plate 16 allows the exhaust gas to be emitted at a wide angle from the exhaust outlets 14a, 14a.
It is released from b.

As described above, according to the present embodiment, the exhaust guide plate 13 and the air volume adjusting plate 15 can evenly balance the exhaust amounts from the exhaust outlets 14a and 14b. Further, the sound absorbing material 17a of the air volume adjusting plate 15 and the sound absorbing materials 17b and 17c on the longitudinal surface of the exhaust chamber 12 can generate a sufficient sound absorbing action. Furthermore, the exhaust chamber side plate 1
By discharging the exhaust gas in a wide angle and in a wide range by the angle of 6 and the exhaust outlets 14a and 14b, it is possible to prompt quick diffusion into the atmosphere.

As described above, according to the present invention, by providing the exhaust chamber, the exhaust inlet, the exhaust guide plate, the air volume adjusting plate, the exhaust chamber side plate, the exhaust outlet and the sound absorbing material, the uniform exhaust amount, quick diffusion and sufficient sound absorption are provided. The effect can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an exhaust gas blowing apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional exhaust gas blowing apparatus,
FIG. 3 is an overall configuration diagram of a conventional hot water supply / room heater. 11 ... Exhaust inlet, 12 ... Exhaust chamber, 13 ...
Exhaust guide plate, 14a, 14b ... Exhaust outlet, 15 ... Air volume adjusting plate, 16 ... Exhaust chamber side plate, 17a, 17
b, 17c ... Sound absorbing material.

Claims (1)

[Claims] 1. An exhaust fan for exhausting combustion exhaust gas, an exhaust chamber provided at a position offset from the center in the longitudinal direction and connected to the exhaust fan, and an exhaust chamber having exhaust outlets on both sides in the longitudinal direction, Exhaust guide plates having trumpet-shaped curved surfaces provided in the exhaust chamber on both sides of the exhaust inlet, both side plates of the exhaust chamber having a divergence angle from the exhaust inlet side toward the exhaust outlet side, and exhaust gas in the exhaust chamber Between both sides of the guide plate and between the exhaust outlets at both ends of the exhaust chamber and on the surface facing the exhaust inlet, and between the both side plates of the exhaust chamber, the exhaust inlet and the exhaust outlet. An exhaust gas blowing device having a space and an air volume adjusting plate provided with a sound absorbing material.