JP3769079B2 - Blower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blower that is installed behind a ceiling and sucks indoor contaminated air and the like out of the room.
[0002]
[Prior art]
Conventionally, what was shown in FIG. 6 and FIG. 7 as this kind of air blower was known. Hereinafter, the blower will be described with reference to FIGS. 6 and 7.
[0003]
As shown in the figure, a sirocco-type fan motor 103 having both suction-type fan casings 102 is provided in a box shape with a silencer 101 provided on the inner surface to form a blower body 104, and a suction-side connection port is provided on the suction side. 105, a discharge side connection port 107 communicating with the discharge port 106 of both suction type fan casings 102 is provided on the discharge side, the blower body 104 is suspended in the ceiling 108, and the suction side connection port 105 is connected to the room 109. A suction-side duct 110 that communicates is connected, and a discharge-side duct 112 that communicates with the outdoor 111 is connected to the discharge-side connection port 107.
[0004]
Then, by operating the sirocco fan motor 103, the air in the room 109 is sucked into the blower main body 104 via the suction duct 110, and the discharge duct connected to the discharge connection port 107 by the sirocco fan motor 103. It was discharged to the outdoor 111 through 112.
[0005]
On the other hand, the noise generated by the sirocco fan motor 103 is reduced by the silencer 101 provided on the inner surface of the blower main body 104, and the noise transmitted to the room 109 via the suction side duct 110 is reduced.
[0006]
[Problems to be solved by the invention]
In such a conventional blower, in order to enhance the silencing effect, it is necessary to lengthen the length of the blower main body 104 provided with the silencer 101, and the problem is that the weight is heavy, the workability is poor, and the cost is high. Therefore, it is required that the blower main body 104 be short and light, have good workability, and be a low-cost blower.
[0007]
In addition, there is a problem in that the air flow path is suddenly expanded from the suction side connection port 105 to the blower main body 104, resulting in a decrease in air volume, noise generation, and efficiency deterioration, and ventilation from the suction side connection port 105 toward the blower main body 104. There is a demand for a blower that eliminates the rapid expansion of the road and prevents the reduction of the air volume, the generation of noise, and the deterioration of efficiency.
[0008]
The present invention solves such a conventional problem, and the length of the blower body is short, light and easy to work, can reduce the cost, and also reduces the air volume, noise generation, and efficiency deterioration. It aims at providing the air blower which can prevent generation | occurrence | production.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the blower of the present invention is provided with a silencer on the inner surface of the blower body and the suction-side silencer connection port.
[0010]
ADVANTAGE OF THE INVENTION According to this invention, the length of a fan main body can be shortened, the air blower which can be lightweight, can improve workability, and can reduce cost can be obtained.
[0011]
Another means is that the suction side connection port is formed with an inclined surface that gradually increases in diameter toward the inner surface of the blower body, and is provided with a sound deadening material.
[0012]
And according to this invention, the air blower which can prevent generation | occurrence | production of an air volume fall, noise generation, and efficiency deterioration is obtained.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The present invention includes a blower body provided with a sirocco fan motor having a box-like shape with both suction fan casings therein, a suction-side silencing connection port provided on the suction side of the blower body, and a discharge side of the blower body A suction side connection port provided in communication with the discharge ports of the both suction type fan casings, and a blower in which a silencer is provided on the inner surface of the blower body and the suction side silencing connection port, wherein the suction side silencing connection port Are formed with an inclined surface that gradually increases in diameter toward the inner surface of the blower body, and the air sucked into the suction-side muffler connection port flows along the inclined surface while spreading into the blower body, and the both-suction fans are those where the structure is drawn from both sides of the casing, the noise generated by the sirocco fan motor in addition to the sound-deadening material which is provided on the inner surface of the blower body, the inner surface of the suction side silencer connecting port Since the be sound reduction by digits silencing material, it is possible to shorten the total length of the blower body, it is possible to improve the workability, lightweight, also the air inclined surface is sucked from the suction side silencer connecting port along smoothly sucked into the blower body, the air volume reduction, prevention of noise generation is achieved, an effect that Ru can improve the efficiency.
[0015]
Embodiments of the present invention will be described below with reference to the drawings.
[0016]
【Example】
Example 1
As shown in FIG. 1 and FIG. 2, a fan body 4 is formed by providing a sirocco fan motor 3 having a double-suction fan casing 2 in a box shape with a silencer 1 made of glass wool or the like on the inner surface. A suction-side silencing connection port 6 provided with a silencer 5 on the inner surface is provided on the suction side of the blower body 4, and a discharge-side connection port 8 is provided on the discharge side so as to communicate with the discharge ports 7 of both suction-type fan casings 2. Provided, the blower body 4 is hung in the ceiling 9, the suction side silence connection port 6 is connected to the suction side duct 11 communicating with the room 10, and the discharge side connection port 8 is connected to the outdoor side 12. The duct 13 is connected and configured.
[0017]
In the above configuration, when the sirocco fan motor 3 is operated, the air in the room 10 is sucked into the blower main body 4 through the suction duct 11 and is sucked into the sirocco fan motor 3 from both sides of the both suction fan casings 2. The air passes through the discharge side connection port 8, passes through the discharge side duct 13, and is discharged outside the room 12.
[0018]
In the process of transmitting the noise generated by the sirocco fan motor 3 to the room 10, the noise is first reduced by the silencer 1 provided on the inner surface of the blower body 4 and further provided on the inner surface of the suction-side silencer connection port 6. The sound is reduced by 5 and transmitted to the room 10 through the suction side duct 11, and the sound reduction effect is increased by the amount reduced by the silencer 5 provided at the suction side silencer connection port 6. It becomes possible to reduce the noise-reducing material 1 to be provided, the overall length of the blower body 4 can be shortened, and by shortening, the weight is reduced, the workability is improved, and the cost is also reduced. .
[0019]
(Example 2)
As shown in FIG. 3, the suction-side silencing connection port 6A is formed with an inclined surface 14 that gradually increases in diameter toward the inner surface of the blower body 4A, and a silencer 5A is provided on the inner surface.
[0020]
In the above configuration, when the sirocco fan motor 3 is operated, the air sucked into the suction-side silencing connection port 6A flows into the blower main body 4A while gradually expanding along the inclined surface 14 forming the suction-side silencing connection port 6A. The air is drawn into the sirocco fan motor 3 from both sides of the suction type fan casing 2 and discharged from the discharge side connection port 8, and the flow of air flowing into the blower body 4A from the suction side silencing connection port 6A becomes smooth. Air flow and noise are prevented and efficiency is improved.
[0021]
In the process of transmitting the noise generated by the sirocco fan motor 3 to the room, the sound is first reduced by the silencer 1 provided on the inner surface of the blower body 4A, and the suction-side silencer connection port 6A is connected to the blower body 4A. By forming the inclined surface 14 that gradually increases in diameter toward the inner surface, the effective area of the silencer 5A increases as compared with the case of forming the same diameter, and the silencing effect is further enhanced.
[0022]
Example 3
As shown in FIG. 4, the silencer 17 is substantially the same in shape as the blower main body 4A, has a silencer 15 on the inner surface, has a suction side connection port 16 on one side, and is connected to the suction side of the blower main body 4A on the other side. Is provided and configured.
[0023]
In the above configuration, when the sirocco fan motor 3 is operated, indoor air is sucked from the suction side connection port 16 provided in the silencer 17 and passes through the silencer 17 and is sucked into the blower main body 4A from the suction side silencing connection port 6A. Thus, the air sucked into the sirocco fan motor 3 from both sides of the both suction fan casings 2 is discharged to the outdoor side from the discharge side connection port 8.
[0024]
On the other hand, in the process in which the noise generated by the sirocco fan motor 3 is transmitted to the indoor side, the noise is first reduced by the silencer 1 provided on the inner surface of the blower body 4A, and then passes through the suction-side silencer connection port 6A. Sometimes the sound is reduced by the silencer 5A and further reduced by the silencer 15 of the silencer 17. The overall length is almost the same as the conventional example, but the noise is reduced compared to the conventional example. be able to.
[0025]
In addition, in Example 3, although demonstrated using the air blower of Example 2, even if it uses the air blower of Example 1, it cannot be overemphasized that the same effect is brought about.
[0026]
(Example 4)
As shown in FIG. 5, a silencer 18 is provided on the outer surface of the two-suction fan casing 2A.
[0027]
In the above configuration, the indoor air is discharged by the same action as in the first embodiment.
[0028]
On the other hand, the noise generated by the sirocco fan motor 3 is reduced by the silencer 1 provided on the inner surface of the blower body 4 and then reduced by the silencer 18 provided on the two suction fan casings 2A. The sound is reduced by the silencer 5 provided on the inner surface of the silencer connection port 6 and transmitted to the indoor side, so that the silencing effect is further enhanced as compared with the first embodiment, and the overall length of the blower body 4 can be further shortened. It will be possible.
[0029]
In addition, although Example 4 demonstrated using the air blower of Example 1, you may use the air blower of Example 2 or Example 3, and does not produce a difference in the effect.
[0030]
【The invention's effect】
As is clear from the above embodiments, according to the present invention, it is possible to provide a blower in which the length of the blower main body is short, lightweight, easy to work, and low in cost.
[0031]
Moreover, the air blower which can prevent generation | occurrence | production of an air volume fall, noise generation | occurrence | production, and efficiency deterioration can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a blower according to a first embodiment of the present invention. FIG. 2 is a schematic view showing an installation state of the blower. 4 is a cross-sectional view showing a configuration of a blower according to a third embodiment of the present invention. FIG. 5 is a cross-sectional view showing a configuration of a blower according to the fourth embodiment of the present invention. 7] Schematic showing the installed state of the blower 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Silencer 2 Double suction type fan casing 2A Double suction type fan casing 3 Sirocco type fan motor 4 Blower body 4A Blower body 5 Silencer 5A Silencer 6 Suction side silencer connection port 6A Suction side silencer connection port 7 Discharge port 8 Discharge side Connection port 14 Inclined surface 15 Silencer 16 Suction side connection port 17 Silencer 18 Silencer

Claims (3)

A blower body provided with a sirocco fan motor having both suction fan casings inside the box, a suction-side silencing connection port provided on the suction side of the blower body, and the both suction ports on the discharge side of the blower body A blower connecting port provided in communication with the discharge port of the mold fan casing, wherein the blower body and the suction side silencing connection port are provided with a silencer on the inner surface of the blower body , the suction side silencing connection port of the blower body It is formed with an inclined surface that gradually increases in diameter toward the inner surface ,
A blower characterized in that the air sucked into the suction-side silencing connection port flows along the inclined surface while spreading into the blower main body, and is sucked from both sides of the two suction-type fan casings. Cross the silencing material is provided on the inner surface at substantially the same shape as the blower body includes a suction side connecting port to one, the blower of claim 1 Symbol placement provided silencer other is connected to the suction side of the blower body. Double inlet fan blower according to claim 1 or 2, wherein the outer surface of the casing provided with a sound-deadening material.

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