JP2006291743A - Blower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that silencing capacity of suction noise at a suction port of a casing is effective but that silencing capacity of casing whole body and/or a boiler is not sufficient in a structure, conventionally described in documents, covering a suction nozzle and a damper for regulating air quantity by sound absorbing material. <P>SOLUTION: This invention is related to a blower provided with an impeller and a motor in a casing provided with the suction port and a delivery port and provided with sound absorbing material. Delivery passage having a roughly thin and long body in a whole view surrounded by sound absorbing material to divide the delivery port is formed. A delivery nozzle and a sound absorbing part are formed in the delivery passage. Sound of blown-out wind is absorbed by using the sound absorbing part and/or sound absorbing material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a blower for factory drying (for factory use), for boilers, for agricultural / livestock use, for car wash machines, and the like.

  Conventionally, it is a blower used for factories, boilers, agricultural / livestock, car wash machines, etc., and has a discharge casing that exhausts air sucked from a suction port in a direction approximately 90 degrees into a spiral casing. In the blower having the structure provided, the noise often becomes a problem. And as a sound absorption measure (soundproof, sound insulation, etc.) using a sound absorbing material, there is a “silencer structure boiler blower” disclosed in Japanese Patent Laid-Open No. 5-113198 (referred to as reference (1)). The present invention is configured to cover the suction nozzle and the air amount adjustment damper with a sound absorbing material (sound absorbing casing configuration), but is limited to a part of the blower muffler (sound absorption measure), There is room for improvement. As another sound absorption measure, there is an “air conditioner” disclosed in Japanese Patent Laid-Open No. 4-76329 (referred to as reference (2)). The present invention forms a suction passage provided with a filter, an electric motor, and a blower at the center of the inside of the fuselage, and a substantially W-shaped heat exchange coil, a valve mechanism, a drain pan, a filter, an automatic control device, a filter, etc. The air flow adjustment mechanism is arranged to form the air passages where the necessary mechanisms are arranged, and the air volume adjustment mechanism is arranged so as to be freely reciprocable in the left-right direction right below the blower opening of the blower. It is the structure which branches in a channel | path and blows and aims at a sound absorption countermeasure. As another example of a car wash machine, as disclosed in “Low noise blower in car wash machine” of Japanese Utility Model Publication No. 62-52065 (reference (3)), The issue of noise for driving car wash machines is addressed. For this purpose, various ideas including this idea have been proposed. However, this kind of device is not an attachment of the sound absorbing material to the casing itself of the spiral (centrifugal blower), or an attachment of the sound absorbing material to the discharge passage (sound absorbing portion), but an individual installation of the sound absorbing material, This is what is called a part of sound absorption measures. Therefore, it is not a sound deadening prevention device for the entire casing, and it cannot be said to have a desired sound absorption effect, or in the present situation where a house is built in the vicinity of a gas station, this sound absorption effect has a high probability that a noise problem will occur. Can be considered. In recent gas stations, there is a tendency to increase the number of operations for 24 hours and / or the operation of the car wash machine, so this noise absorption countermeasure (noise reduction countermeasure, noise prevention countermeasure, noise insulation countermeasure, etc.) is urgent. Moreover, in the blower for boilers provided with the conventional silencer, the damper for air quantity adjustment is installed in the front surface of the suction inlet of a blower. Therefore, the opening shape of the air inlet of the blower changes according to the opening of the damper for adjusting the air amount, and a vortex is generated in the air inlet and / or in the vicinity thereof to generate a large air intake noise. The reduction effect was not sufficient. That is, there is a problem that suction sound is generated by the air amount adjusting damper.

Japanese Patent Laid-Open No. 5-113198 JP-A-4-76329 Japanese Utility Model Sho 62-52065

  In the above document (1), the suction nozzle and the air amount adjusting damper are still covered with the sound absorbing material. Therefore, it is effective for noise reduction (soundproofing or the like) due to suction at the suction port of the casing, but it is not necessarily sufficient for noise reduction of the entire casing and / or the boiler.

  Next, Document (2) is a configuration in which the amount of air blown from the blower is changed and adjusted alternately to branch into the left and right air passages and blown to prevent noise absorption. Therefore, it is a configuration that can be adopted only for a specific structure, and lacks versatility. Further, the present invention is not a structure for absorbing sound by effectively utilizing the sound absorbing material, and it is considered that a sufficient silencing effect cannot be expected.

  Furthermore, although the sound absorbing effect can be expected with reference (3), the sound absorbing material is provided at the suction port of the casing. Therefore, it is effective for noise prevention (noise reduction, soundproofing or sound absorption) due to the suction sound at the suction port of the casing (car wash machine body), but for the noise prevention of the entire casing and / or the entire car wash machine. It's not always enough.

  The invention according to claim 1 provides an optimum structure for achieving sound absorption of the blower in the entire blower, or discharge of a substantially elongated body as a whole surrounded by a sound absorbing material provided at a discharge port of the blower. It is intended to provide a simple and low-cost sound absorbing device called a passage. Further, the invention of claim 1 is characterized in that the sound absorbing material in the discharge passage of the substantially elongated body absorbs the discharge sound of the wind blown from the discharge port, and the sound absorption effect (effect of silencing, soundproofing, sound insulation, etc.) and / or It is intended to improve the drying efficiency.

Claim 1 is a blower in which an impeller and a motor for driving the impeller are respectively provided in a casing provided with a sound absorbing material having a suction port and a discharge port,
A discharge passage of a substantially elongated body is formed as a whole surrounded by a sound absorbing material so as to be partitioned into the discharge ports, and a discharge nozzle and a sound absorbing portion are formed in the discharge passage, and the sound absorbing portion and / or the sound absorbing portion is formed. This is a blower configured to absorb sound (mute) of the wind blown from the discharge port using a material.

  The invention of claim 2 provides an optimum structure for achieving sound absorption of the blower in the entire blower, or a double sound absorption effect by the sound absorbing material of the casing body and the sound absorbing material of the discharge passage of the substantially elongated body. It is intended to eliminate approximately 100% of the noise generated by the blower by achieving (effects such as noise reduction, soundproofing, and sound insulation). The invention of claim 2 is intended to absorb the sound discharged from the air blown from the discharge port by the sound absorbing material in the discharge passage of the substantially elongated body to achieve a sound absorption effect and / or drying efficiency. Others are intended to achieve the same object as in claim 1.

Claim 2 is a blower in which an impeller and a motor for driving the impeller are provided in a casing having a suction port and a discharge port,
A discharge passage of a substantially elongated body is formed as a whole surrounded by a sound absorbing material so as to be partitioned into the discharge ports, and a discharge nozzle and a sound absorbing portion are formed in the discharge passage, and the sound absorbing portion and / or the sound absorbing portion is formed. This is a blower configured to absorb sound (mute) of the wind blown from the discharge port using a material.

  The invention of claim 3 is intended to achieve the object of claim 1 or claim 2 and to provide a discharge passage provided with a sound-absorbing material optimal for achieving the object.

  A third aspect of the present invention is a blower in which the discharge passage according to the first or second aspect has a substantially bellows shape when viewed from the side.

  The invention of claim 4 is intended to achieve the object of claim 1 or claim 2 and to provide a discharge passage provided with a sound absorbing material optimal for achieving the object.

  A fourth aspect of the present invention is a blower in which the discharge passage according to the first or second aspect has a bifurcated shape when viewed from the side.

  The invention of claim 5 is intended to achieve the object of claim 1 or claim 2 and to provide a discharge passage provided with a sound-absorbing material optimal for achieving the object.

  A fifth aspect of the present invention is a blower in which the discharge passage according to the first or second aspect of the present invention is formed into a multi-stage folded shape when viewed from the side.

  The invention of claim 6 is intended to achieve the object of claim 3 and to provide a discharge passage provided with a sound-absorbing material optimal for achieving this object to the maximum.

  A sixth aspect of the present invention is a blower having a configuration in which a sound absorbing material is attached to the substantially bellows-shaped abdomen according to the third aspect.

  The invention of claim 7 is intended to achieve the object of claim 4 and to provide a discharge passage provided with a sound-absorbing material optimal for achieving the object to the maximum.

  A seventh aspect of the present invention is a blower having a structure in which a sound absorbing material is attached to an appropriate position of the bifurcated shape according to the fourth aspect.

  The invention of claim 8 achieves the object of claim 5 and is intended to provide a discharge passage provided with a sound-absorbing material optimal for achieving the object to the maximum.

  An eighth aspect of the present invention is a blower having a structure in which a sound-absorbing material is attached at an appropriate position of the multi-stage bent shape according to the fifth aspect.

The invention of claim 1 is a blower in which a motor for driving an impeller and an impeller is provided in a casing provided with a sound absorbing material having a suction port and a discharge port,
A discharge passage of a substantially elongated body is formed as a whole surrounded by a sound absorbing material so as to be divided into discharge ports, a discharge nozzle and a sound absorbing portion are formed in the discharge passage, and a sound absorbing portion and / or a sound absorbing material is used. A blower configured to absorb sound of the wind blown from the discharge port.

  Accordingly, the first aspect of the present invention can provide an optimum structure for achieving the sound absorption of the blower with the entire blower, or the discharge passage of the substantially elongated body as a whole surrounded by the sound absorbing material provided at the discharge port of the blower. It is possible to provide a simple and low-cost sound absorbing device. Further, according to the first aspect of the present invention, the sound absorbing material in the discharge passage of the substantially elongated body absorbs the discharge sound of the wind blown from the discharge port, and there is an actual benefit that the sound absorption effect and / or the efficiency of drying can be achieved.

The invention of claim 2 is a blower in which a motor for driving an impeller and an impeller is provided in a casing having a suction port and a discharge port, respectively.
A discharge passage of a substantially elongated body is formed as a whole surrounded by a sound absorbing material so as to be divided into discharge ports, a discharge nozzle and a sound absorbing portion are formed in the discharge passage, and a sound absorbing portion and / or a sound absorbing material is used. A blower configured to absorb sound of the wind blown from the discharge port.

  Accordingly, the second aspect of the present invention can provide an optimum structure for achieving the sound absorption of the blower in the entire blower, or a double sound absorption effect by the sound absorbing material of the casing body and the sound absorbing material of the discharge passage of the substantially elongated body. As a result, it is possible to eliminate substantially 100% of noise generated by the blower. Further, according to the second aspect of the present invention, the sound absorption material of the air blown from the discharge port is absorbed by the sound absorbing material in the discharge passage of the substantially elongated body, so that the sound absorption effect and / or the efficiency of drying can be improved. The other features are the same as those of the first aspect.

  A third aspect of the present invention is a blower in which the discharge passage according to the first or second aspect has a substantially bellows shape when viewed from the side.

  Accordingly, the third aspect is characterized in that the object of the first or second aspect can be achieved and a discharge passage provided with a sound-absorbing material optimum for achieving the object can be provided.

  The invention of claim 4 is a blower in which the discharge passage according to claim 1 or 2 is bifurcated in a side view.

  Therefore, the fourth aspect is characterized in that the object of the first or second aspect can be achieved, and a discharge passage provided with a sound-absorbing material optimum for achieving the object can be provided.

  A fifth aspect of the present invention is a blower in which the discharge passage according to the first or second aspect of the present invention is formed into a multi-stage bent shape as viewed from the side.

  Accordingly, the fifth aspect of the present invention is characterized in that the object of the first or second aspect can be achieved and a discharge passage provided with a sound-absorbing material optimum for achieving the object can be provided.

  A sixth aspect of the present invention is a blower configured such that a sound absorbing material is attached to the substantially bellows-shaped belly portion according to the third aspect.

  Accordingly, the sixth aspect is characterized in that the object of the third aspect can be achieved and a discharge passage provided with a sound-absorbing material optimum for achieving the object can be provided.

  A seventh aspect of the present invention is a blower having a structure in which a sound absorbing material is attached to an appropriate position of the bifurcated shape according to the fourth aspect.

  Accordingly, the seventh aspect is characterized in that the object of the fourth aspect can be achieved and a discharge passage provided with a sound-absorbing material optimal for achieving the object can be provided.

  The invention of claim 8 is a blower having a structure in which a sound absorbing material is provided at an appropriate position of the multi-folded shape of claim 5.

  Accordingly, the eighth aspect is characterized in that the object of the fifth aspect can be achieved and a discharge passage provided with a sound-absorbing material optimal for achieving the object can be provided.

Hereinafter, embodiments (forms) of the present invention will be described.
Referring to the drawings, FIG. 1 is a front view showing an example of a blower having a discharge port facing downward (in the state on the drawing), FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is an example of the example shown in FIG. 4 is a cross-sectional view showing another discharge passage, FIG. 4 is a cross-sectional view showing still another discharge passage of the example shown in FIG. 1, and FIG. 5 is a side view showing another example of the example shown in FIG. 6 is a front view showing an example of a blower having a discharge port in a horizontal direction (in the state on the drawing), FIG. 7 is a schematic view showing an example of adopting the example of FIG. 6 in a car wash machine, and FIG. 8 is a sound absorbing material. It is the expanded sectional view which showed an example.

  Next, each example of the configuration will be described in order. In the figure, reference numeral 1 denotes a casing of a spiral blower A (a centrifugal blower, but including an axial blower or the like). The casing 1 has a substantially trumpet-shaped suction port 2, a discharge port 3, and the discharge port 3. The discharge passage 4 is provided in communication with the air, and the air sucked from the suction port 2 is exhausted from the discharge nozzle 400 of the discharge passage 4 to the outside through the discharge port 3 and the discharge passage 4. is there. The discharge passage 4 is a substantially elongated body, and as shown in the drawing, various shapes such as a substantially elongated cylinder, a substantially elongated cylindrical body, and a branched substantially elongated body may be employed. These various shapes are changed depending on the state of use, the relationship with other devices, the state of installation, and the like. In the figure, reference numeral 100 denotes a suction opening provided in the casing 1. The casing 1 includes an impeller 5 and a motor 6 that drives the impeller 5. The impeller 5 is rotated by driving the motor 6. The rotation of the impeller 5 sucks air from the suction port 2 and exhausts (blows out) the sucked air through the discharge port 3 and the discharge passage 4. In this example, the sound absorbing material 8 is attached to at least the inner wall surface 1a of the casing 1 (not shown, but there may be an outer wall surface). In addition, a sound absorbing material 9 is attached to at least the inner wall surface 4a of the discharge passage 4 (there may be an outer wall surface although not shown).

  A preferred example of the discharge passage 4 will be described. First, in the example of FIG. 2, a substantially bellows shape is formed when viewed from the side, and a sound absorbing portion having a curved uneven portion is formed on the sound absorbing material 9 of the inner wall surface 4 a to bypass and / or diffuse the discharge air. Therefore, efficient drying is achieved through a further sound absorption effect and / or reliable diffusion of the discharge air. Next, in the example of FIG. 3, a sound absorbing part having a bifurcated detour part when viewed from the side is provided, and a sound absorbing material 9 is provided on each inner wall surface 4 a to divide and / or diffuse discharge air, etc. The sound absorption effect and / or efficient drying of the product. Further, in the example of FIG. 4, when viewed from the side, a multi-stage bent shape is formed, and a sound absorbing part provided with a zigzag concave / convex detour part is formed on the sound absorbing material 9 of the inner wall surface 4 a, thereby bypassing the discharge air and the like. Plan. In the example of FIG. 2, one or several bar-shaped sound absorbing materials 900 are provided in a relatively wide space 4 b of the discharge passage 4 to achieve a sound absorption effect of discharged air and / or efficient drying of the product. The sound absorbing material 900 can be used in various ways such as a fixed type and a rotary type. The fixed type can simplify the structure and reduce the cost, and the rotary type can further diffuse and bypass the discharge air. Thus, it is considered that the sound absorption effect and / or the efficient drying effect of the product can be further expanded. Further, the shape is a round bar shape, a square bar shape, an uneven shape, an intermittent type, a taper type, or the like, and a structure that can be adapted to various uses, versatile use, time, place, use mode, and the like. The blower A is in a normal form. For example, when the motor 6 is an external fan system, a system in which the impeller 5 is directly connected to the shaft of the motor 6 is adopted to simplify the overall structure and reduce the number of parts. It is intended to save or reduce the size of the outer structure and the cooling effect of the motor 6. However, this outer fan method and / or the method in which the impeller 5 is directly connected to the shaft of the motor 6 is an example and is not limited. Note that the motor 6 can be employed even when it is fully closed (not shown). Further, in the example of the present invention, a normal casing (not shown. The normal casing is a main casing) provided with an impeller 5 as shown in the drawing so as to secure a blowing distance of the discharge passage 4 and to achieve a sound absorption effect. Sub-casing 1-2 for discharge passage 4 having substantially the same size and length in the longitudinal direction is formed. However, the dimensions of the sub casing 1-2 are changed as necessary.

  The example shown in FIG. 5 is a configuration in which the motor 6 is provided in the casing 1 and the impeller 5 is provided so as to face the suction opening 100, and is intended to absorb the suction sound on the suction side. Sound absorption effect can be achieved. In this example, it is more preferable to attach the sound absorbing material 901 to the frame of the impeller 5 (the same applies to the examples of FIGS. 1 to 4 and the like).

  In addition, the example shown in FIG. 6 is a configuration in which the sub casing 1-2 for the discharge passage 4 is changed in direction by approximately 90 °, and this configuration basically conforms to each of the above-described examples (examples of FIGS. 1 to 5). Utilizing this peculiarity in the discharge (blowing) direction, for example, it is employed as the blower A of the car wash machine B shown in FIG. The car wash machine B includes a portal-shaped moving frame B1, a plurality of air blowing nozzles B2, a wheel B3, and a rail B4 arranged on the moving frame B1. Then, water and / or water droplets, dust and the like adhering to the vehicle C are excluded using the air blown from the nozzle B2.

  Further, the above-described suction opening 100 is configured to surround the motor 6 through the passage 100a, and the air passing through the passage 100a is used to cool the motor 6 while improving durability and damage to the lubrication part. Try to avoid it. In the example of FIG. 5, the suction port 2 surrounds the motor 6 and the passage 100 a is provided around the motor 6. In addition to the sound absorption effect, the same effect as in the above example can be expected.

  The sound absorbing materials 8 and 9 (900, 901) shown in FIG. 8 are composed of rigid inner and outer wall bodies 11 and 12, and a sound absorbing material 13 and / or a sound insulating material 14 surrounded by the inner and outer wall bodies 11 and 12. Is done. A sound absorbing means for improving sound absorption is provided on all or part of the inner wall body 11. Although not shown, this sound absorbing means is provided with holes, burring holes (protrusions are located toward the sound absorbing material 13 and the sound insulating material 14), mesh, flocking, etc. individually or in combination.

FIG. 1 is a front view showing an example of a blower having a discharge port facing downward (in the state on the drawing). 2 is a cross-sectional view of FIG. FIG. 3 is a sectional view showing another discharge passage of the example shown in FIG. FIG. 4 is a sectional view showing still another discharge passage of the example shown in FIG. FIG. 5 is a side view showing another example of the example shown in FIG. FIG. 6 is a front view showing an example of a blower having a discharge port in a horizontal direction (in the state on the drawing). FIG. 7 is a schematic diagram showing an example of FIG. 6 adopted in a car wash machine. FIG. 8 is an enlarged sectional view showing an example of a sound absorbing material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 1a Inner wall surface 1-1 Main casing 1-2 Subcasing 100 Suction opening 100a Passage 2 Suction port 3 Discharge port 4 Discharge passage 4a Inner wall surface 4b Space 400 Discharge nozzle 5 Impeller 6 Motor 8 Sound absorbing material 9 Sound absorbing material 900 Sound absorbing material Material 901 Sound absorbing material 11 Inner wall body 12 Outer wall body 13 Sound absorbing material 14 Sound insulating material A Blower B Car wash machine B1 Moving frame B2 Nozzle B3 Wheel B4 Rail C Vehicle

Claims (8)

A blower provided with an impeller and a motor for driving the impeller in a casing provided with a sound absorbing material having a suction port and a discharge port,
A discharge passage of a substantially elongated body is formed as a whole surrounded by a sound absorbing material so as to be partitioned into the discharge ports, and a discharge nozzle and a sound absorbing portion are formed in the discharge passage, and the sound absorbing portion and / or the sound absorbing portion is formed. A blower configured to absorb sound of wind blown from the discharge port using a material. In a casing provided with a suction port and a discharge port, a blower provided with an impeller and a motor for driving the impeller,
A discharge passage of a substantially elongated body is formed as a whole surrounded by a sound absorbing material so as to be partitioned into the discharge ports, and a discharge nozzle and a sound absorbing portion are formed in the discharge passage, and the sound absorbing portion and / or the sound absorbing portion is formed. A blower configured to absorb sound of wind blown from the discharge port using a material. The blower which made the discharge passage of Claim 1 or Claim 2 the substantially bellows shape by side view. A blower in which the discharge passage according to claim 1 or 2 is bifurcated in a side view. The blower which made the discharge channel of Claim 1 or Claim 2 the multistage bending shape by side view. A blower configured to attach a sound absorbing material to the substantially bellows-shaped abdomen according to claim 3. A blower having a structure in which a sound-absorbing material is attached to an appropriate position of the forked shape according to claim 4. A blower having a structure in which a sound absorbing material is attached to an appropriate place of the multi-stage bent shape according to claim 5.

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