JP4651305B2 - Low noise equipment for blowers - Google Patents

Description

  The present invention relates to a low-noise device for a car wash machine and a blower installed in a factory.

  Conventionally, in a car wash machine and a blower installed in a factory, the noise is a problem in a blower having a discharge casing that exhausts air sucked from a suction port in a direction approximately 90 degrees into a spiral casing. In many cases. For example, in a car wash machine, as disclosed in “Low Noise Blower in Car Wash Machine” of Japanese Utility Model Publication No. 62-52065 (reference (1)), there is a problem of noise for driving the car wash machine at night or the like. Has been taken up. For this purpose, various ideas have been proposed including this idea. However, all of these types of devices have some noise countermeasures (soundproofing or sound absorption), such as the attachment of a sound absorbing material to the spiral casing itself, or the sound absorbing material attached to the suction port. Since it is not a prevention device, the soundproofing effect is not necessarily sufficient. This type of noise is likely to be a problem, especially in the situation where a house is built near a gas station. In recent years when this type of car wash machine tends to increase in business hours for 24 hours, this noise countermeasure is urgent. And the structure which aims at the sound absorption of the whole casing which was a problem of this literature (1) is seen occasionally. For example, as disclosed in “casing” of Japanese Patent Laid-Open No. 2003-139095 (referred to as reference (2)), the casing is a scroll casing (housing) and a sound absorbing material (outer casing) made up of a soft member provided on the scroll casing. It is intended to achieve the strength of the casing by utilizing the strength of the housing while achieving the sound absorbing (soundproofing) effect through the sound absorbing material. The present invention is suitable for a structure in which a casing forms a part of a vehicle as a part of the vehicle. However, it is not a problem in situations where outside air and / or moisture contact and scatter, such as a car wash machine, or a lack of structural strength, etc., when placed alone in a factory. There are improvements such as becoming.

Japanese Utility Model Sho 62-52065

JP2003-139095

  The above references (1) and (2) can be expected to have a soundproofing effect. However, in the document (1), some noise in the casing is prevented, and some technical problems to be structurally improved remain in order to achieve sound insulation of the entire blower. Further, in the literature (2), since the casing is composed of a soft member, there is a problem in strength, and it is considered that the casing may be limited to use in a specific field.

  In view of the above, it is an object of the present invention to provide a low noise device for a blower that is realistic, while soundproofing the entire blower. In addition to preventing this noise, it is intended to cool the motor (drive source) of the blower to achieve a cooling effect of the motor, an improvement in durability, and avoidance of damage to the lubrication part.

  The invention of claim 1 is intended to provide a low-noise device for a blower that is realistic, while soundproofing the entire blower. In addition to preventing this noise, it is intended to cool the motor (drive source) of the blower to achieve a cooling effect of the motor, an improvement in durability, and avoidance of damage to the lubrication part. Furthermore, by ensuring the flow of air (wind) surrounding the casing to achieve a soundproofing effect (sound absorption effect), and by providing a sound absorbing means on the inner wall for improving the sound absorption of the sound absorbing wall, this soundproofing effect is achieved. It is intended to further improve.

Claim 1 is a low noise device for a blower having a configuration in which an impeller is provided in a casing having a suction port and a discharge port, a motor for the impeller is provided in the blower, and the blower is surrounded. In
An appropriate space is formed between the sound absorbing wall provided inside the low noise device and the blower,
This interval is connected to the suction opening and the discharge opening that open to the suction opening and the discharge opening, and the sound absorbing wall is composed of a hard inner and outer wall body and a sound absorbing material surrounded by the inner and outer wall bodies. The inner wall body is provided with sound absorbing means for improving the sound absorption of the sound absorbing wall,
Furthermore, the suction opening is a low noise device for a blower having a configuration in which a wrap portion is formed inside thereof,
The low noise device for a blower, wherein the suction opening surrounds the motor and forms a passage around the motor .

  The inventions according to claims 2 to 5 are intended to achieve the object of claim 1 and to provide an inner wall body optimal for achieving the object.

Claim 2 is the low noise device for a blower according to claim 1,
The sound absorbing means is a low noise device for a blower which is a hole provided in an inner wall body.

Claim 3 is the low noise device for a blower according to claim 1,
The sound absorbing means is a low noise device for a blower which is a hole with a burring provided in an inner wall.

Claim 4 is the low noise device for a blower according to claim 1,
The sound absorbing means is a low noise device for a blower that is a flocked body provided on an inner wall.

Claim 5 is the low noise device for a blower according to claim 1,
The sound absorbing means is a low noise device for a blower having a mesh inner wall structure.

  The invention of claim 6 is intended to achieve the object of claim 1 and to provide a suction opening of the sound absorbing wall that is optimal for achieving this object.

Claim 6 is the low noise device for a blower according to claim 1,
It is a low noise device for a blower configured such that a suction opening of the sound absorbing wall opens so as to surround a motor of the blower.

The invention of claim 1 is a low noise device for a blower having a configuration in which an impeller is provided in a casing having a suction port and a discharge port, a motor for the impeller is provided in the blower, and the blower is surrounded. In
An appropriate space is formed between the sound absorbing wall provided inside the low noise device and the blower,
The interval is continuous with the suction opening and the discharge opening that open to the suction opening and the discharge opening, and the sound absorbing wall is composed of a hard inner and outer wall body and a sound absorbing material surrounded by the inner and outer wall bodies, and the inner wall body. Provide sound absorbing means to improve the sound absorption of the sound absorbing wall,
Furthermore, the suction opening is a low noise device for a blower having a configuration in which a wrap portion is formed inside,
A low noise device for a blower characterized in that a suction opening surrounds the motor and forms a passage around the motor .

  Accordingly, the present invention can provide a low noise device for a blower that is realistic and can provide noise reduction for the entire blower. In addition, the motor (drive source) of the blower can be cooled and the motor can be cooled. The cooling effect, the improvement in durability, and the avoidance of damage to the lubrication part are achieved. In addition, the air flow surrounding the casing is secured to achieve a soundproofing effect (sound absorbing effect), and the sound absorption means for improving the sound absorption of the sound absorbing wall is provided on the inner wall body, thereby further improving this soundproofing effect. Has the benefit of being able to

The invention of claim 2 is a low noise device for a blower according to claim 1,
This is a low noise device for a blower in which the sound absorbing means is a hole provided in the inner wall.

The invention of claim 3 is the low noise device for a blower according to claim 1,
This is a low noise device for a blower in which the sound absorbing means is a hole with a burring provided in an inner wall.

The invention of claim 4 is the low noise device for a blower according to claim 1,
This is a low noise device for a blower in which the sound absorbing means is a flocked body provided on the inner wall.

The invention of claim 5 is a low noise device for a blower according to claim 1,
This is a low noise device for a blower in which the sound absorbing means has a mesh inner wall structure.

  Accordingly, claims 2 to 5 have the characteristics that the object of claim 1 can be achieved, and an inner wall body optimal for achieving the object can be provided.

Claim 6 is the low noise device for a blower according to claim 1,
It is a low noise device for a blower that opens a suction opening of a sound absorbing wall so as to surround a motor of the blower.

  Accordingly, the sixth aspect is characterized in that the object of the first aspect can be achieved and a sound-absorbing wall suction opening that is optimal for achieving the object can be provided.

  Hereinafter, embodiments (forms) of the present invention will be described.

  Reference numeral 1 denotes a casing of the blower A. The spiral casing 1 is provided with a suction port 2 and a discharge port 3, and air from the suction port 2 is exhausted to the outside through the discharge port 3. The casing 1 is provided with an impeller 4 and a motor 5 for driving the impeller 4 is provided in the casing 1, and the impeller 4 is rotated by driving the motor 5, Enable exhaust. This blower A is a normal form. For example, when the motor 5 is an external fan system, a system in which the impeller 4 is directly connected to the shaft of the motor 5 is adopted, thereby simplifying the overall structure and saving the number of parts. Or the external structure is made compact and the cooling effect of the motor 5 is intended. However, the outer fan method and / or the method in which the impeller 4 is directly connected to the shaft of the motor 5 is an example and is not limited. Note that the motor can be employed even when it is fully closed (not shown).

  Then, a sound absorbing wall B for the blower surrounding the blower A is provided. In this example, the sound absorbing wall B is provided in the casing 1 of the blower A at an appropriate interval. The sound absorbing wall B forms a suction opening 6 and a discharge opening 7 that open along the suction port 2 and the discharge port 3. In the illustrated example, the suction opening 6 is provided on the back surface 1a of the casing 1 and the structure facing the suction opening 2 is adopted. For example, the casing 1 is made of air sucked from the suction opening 2 and / or the suction opening 6. The structure is designed to reliably catch the noise generated around the sound and prevent the noise from leaking outside the sound absorbing wall B. Desirably, the suction opening 6 surrounds the motor 5 and a passage 50 is provided around the motor 5 as in the examples of FIGS. 1 to 4, while cooling the motor 5 as described above. To improve durability and avoid damage to lubricated parts. In the example of FIG. 5, the suction port 2 surrounds the motor 5 and the passage 50 is provided around the motor 5, but the same effect as in the above example can be expected. The sound absorbing wall B includes hard inner and outer wall bodies 8 and 9, and a sound absorbing material 10 and / or a sound insulating material 100 surrounded by the inner and outer wall bodies 8 and 9. A sound absorbing means C for improving sound absorption is provided on all or part of the inner wall body 8. The sound absorbing means C is provided with holes 11, holes 12 with burring (protrusions are located toward the sound absorbing material 10), meshes 13, although not shown in the drawings, or a combination of hairs. It is desirable that the suction opening 6 has a wraparound shape on the inside, and the wrapping portion 600 is designed to catch noise and / or prevent diffusion (guard). That is, the noise generated mainly by the back surface 1a of the casing 1 and the sound absorbing wall B is guarded by the wrapping portion 600, and the noise prevention is expanded.

  FIG. 8 shows another example, which is a configuration in which the sound absorbing material 10 and / or the sound insulating material 100 is provided in a part of the periphery of the casing 1 (for example, a part such as the back surface 1a where noise is severe) or the whole. Is intended to prevent noise almost completely in combination with the sound absorbing wall B. Further, in another example of FIG. 9, a part of the sound absorbing wall B bulges, and the bulging part B1 is filled with the sound absorbing material 10 and / or the sound insulating material 100, or an air layer or the like is used. It is intended to absorb the noise generated by repulsion and prevent the noise almost completely.

  In the figure, D is a car wash machine, and this car wash machine D has a gate-shaped moving frame 20, nozzles 21, and wheels 22. In the figure, reference numeral 23 denotes a rail provided on the floor.

  In addition, the arrow in a figure shows the flow of air.

The front view seen from the discharge outlet which showed an example of this invention Sectional view seen from the inlet of FIG. Side view of FIG. Sectional view of FIG. Sectional view in plan view showing another example of the present invention Expanded sectional view of the sound absorbing wall It is an enlarged view showing the sound absorbing means of the sound absorbing wall, (A) is the structure of the hole, (B) is the structure of the hole with burring, (C) is the structure of the mesh Sectional drawing seen from the suction inlet which showed another example of this invention Sectional drawing seen from the suction inlet which showed another example of this invention Schematic diagram of the car wash machine with the present invention

DESCRIPTION OF SYMBOLS 1 Casing 1a Back surface 2 Suction port 3 Discharge port 4 Impeller 5 Motor 50 Passage 6 Suction opening 600 Circulation part 7 Discharge opening 8 Inner wall body 10 Outer wall body 10 Sound absorbing material 100 Sound insulation material 11 Hole 12 Burring hole 13 Mesh 20 Moving frame 21 Nozzle 22 Wheel 23 Rail A Blower B Sound absorbing wall B1 Swelling part C Sound absorbing means D Car wash machine

Claims (6)

In a low noise device for a blower having a configuration in which an impeller is provided in a casing having a suction port and a discharge port, and a motor for the impeller is provided in the blower, and the blower is surrounded.
An appropriate space is formed between the sound absorbing wall provided inside the low noise device and the blower,
This interval is connected to the suction opening and the discharge opening that open to the suction opening and the discharge opening, and the sound absorbing wall is composed of a hard inner and outer wall body and a sound absorbing material surrounded by the inner and outer wall bodies. The inner wall body is provided with sound absorbing means for improving the sound absorption of the sound absorbing wall,
Furthermore, the suction opening is a low noise device for a blower having a configuration in which a wrap portion is formed inside thereof,
A low noise device for a blower, wherein the suction opening surrounds the motor and forms a passage around the motor . In the low noise apparatus for an air blower according to claim 1,
The sound absorbing means is a low noise device for a blower which is a hole provided in an inner wall. In the low noise apparatus for an air blower according to claim 1,
The sound absorbing means is a low noise device for a blower which is a hole with a burring provided in an inner wall. In the low noise apparatus for an air blower according to claim 1,
The sound absorbing means is a low noise device for a blower which is a flocked body provided on an inner wall. In the low noise apparatus for an air blower according to claim 1,
The sound absorbing means is a low noise device for a blower in which the structure of the inner wall body is a mesh. In the low noise apparatus for an air blower according to claim 1,
A low noise apparatus for a blower configured such that the suction opening of the sound absorbing wall opens so as to surround a motor of the blower.

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