JP2005321129A - Ventilating fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating fan usable in a chicken coop or a greenhouse and easy of maintenance. <P>SOLUTION: The ventilating fan comprises a framework body having a bearing support for fixing a bearing portion journaling a rotating shaft on which a fan pulley is mounted, a vane mounted on the rotating shaft so that a motor fixture can be mounted on the framework body for fixing a motor on which a motor pulley is mounted, and a belt bridged between the fan pulley and the motor pulley for rotationally driving the vane. A bellmouth forming an opening in the center of the framework body is constructed separately and the bellmouth is arranged on the framework body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a ventilation fan that cools the interior of a poultry house, a greenhouse, or the like by discharging contaminated air and introducing fresh air used in a poultry house, a greenhouse, or the like.

  Conventionally, this type of ventilation fan has a blade supported rotatably on a support frame fixed to a square outer frame provided with a bell mouth, and a motor provided on one of the four corners of the outer frame via a pulley and a belt. A device that is driven is known (see, for example, Patent Document 1 or 3, 5).

  Hereinafter, the ventilation fan will be described with reference to FIGS. 8 and 9.

  As shown in the figure, a square-shaped outer frame 101 having a bell mouth in the center, two pipes 102 arranged side by side so as to straddle the bell mouth, and a motor support base 103 at one of the four corners of the outer frame 101. The shaft support base 104 is installed on the two pipes 102, the rotary shaft 106 is pivotally supported by the bearing 105 provided on the shaft support base 104, and the blade 107 and the fan pulley 108 are provided at both ends thereof. Fixed. An electric motor 110 to which a motor pulley 109 is attached is fixed to the motor support base 103 so as to be flush with the fan pulley 108, and a belt 111 is hung on the motor pulley 109 and the fan pulley 108. When the electric motor 110 rotates, the rotational force is transmitted from the motor pulley 109 to the fan pulley 108 via the belt 111, and the blade 107 fixed to the other end of the rotating shaft 106 is rotationally driven to blow air. In this configuration, the rotating shaft is mounted by attaching a blade to one end of a rotating shaft that is pivotally supported through a bearing fixed to an outer frame that is a main body, a fan pulley on the other end, and a bearing in between. The load on is averaged. In addition, since the fan pulley and the motor pulley are exposed on the same side, repair and maintenance of the belt, which is a consumable item, is facilitated. And installation to a place of use is usually fixed by screws, bolts and nuts through a plurality of mounting holes provided near the outer side of the outer frame 101.

  Moreover, there exists what improved safety | security in this kind of ventilation fan (for example, refer patent document 2).

  In addition, there is a ventilating fan of this type in which a part of a bell mouth in the vicinity of the electric motor is cut out and the electric motor is cooled by using a ventilation flow (see, for example, Patent Document 4).

  Some types of this kind of ventilation fan are provided with a protective guard (see, for example, Patent Documents 6 to 10).

Moreover, many of this kind of ventilation fan was attached to wall surfaces, such as a poultry house and a greenhouse, and required ventilation amount was ensured (for example, refer patent documents 11-12).
Japanese Patent Laid-Open No. 62-129634 (Page 2, Figures 1 and 2) JP 54-147506 A JP 54-147646 A Japanese Utility Model Publication No. 55-64035 Japanese Utility Model Publication No. 55-157636 Japanese Utility Model Publication No. 57-160034 Japanese Utility Model Publication No. 57-160035 Japanese Utility Model Publication No. 58-78419 Japanese Utility Model Publication No. 58-83019 Japanese Utility Model Publication No. 58-83020 Japanese Patent Laid-Open No. 10-117624 Japanese Patent Laid-Open No. 11-146739

  In recent years, the number of ventilation fans and the like has increased due to the increase in size of poultry houses and greenhouses. As the number of ventilation fans increases, initial costs and running costs increase, and there is a desire to increase the size of the ventilation fans themselves to reduce the number of installed fans.

  However, when the size of such a conventional ventilation fan is increased, noise is generated due to wind noise or the like, and there is a problem that complaints of neighboring residents and stress of chickens in the poultry house occur.

  Further, there is a problem that the increase in size increases the weight, the workability is deteriorated, and the number of man-hours for installation on the site is increased.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a ventilation fan that is low in noise, lightweight, and easy to maintain and inspect.

  In order to achieve the above object, the ventilation fan of the present invention is characterized in that the frame frame main body having a bearing support base for fixing the bearing portion that supports the rotating shaft on which the fan pulley is mounted, and the motor pulley. A ventilating fan comprising: a motor fixing tool that fixes a motor mounted on the frame frame body; a blade mounted on the rotating shaft; and a belt that rotates on the fan pulley and the motor pulley to rotate the blade. A bell mouth that forms an opening in the center of the frame frame main body is formed separately, and the bell mouth is arranged in the frame frame main body.

  According to a second aspect of the present invention, a framework frame main body having a bearing support base that fixes a bearing portion that pivotally supports a rotating shaft, and an electric motor fixture that fixes an electric motor directly connected to the rotating shaft are attached to the frame frame main body. A ventilation fan that is attachable and has blades attached to the rotating shaft, wherein the frame frame main body and the bell mouth that forms an opening in the center of the outer frame are configured separately, and the bell frame frame main body has a bell A mouse is provided.

  According to a third aspect of the present invention, there is provided the ventilation fan according to the first or second aspect, wherein two frames are provided on the frame frame main body, and the support member is positioned between the frames and above the frame frame main body at a central position. A bearing support is provided.

  According to a fourth aspect of the present invention, in the ventilating fan according to the first or second aspect, the bell mouth is formed of a foam molded resin material.

  According to a fifth aspect of the present invention, in the ventilating fan according to the fourth aspect, the bell mouth is formed of four divided pieces.

  According to a sixth aspect of the present invention, in the ventilating fan according to the first or second aspect, an electric motor for rotationally driving the blades is provided in the ventilation passage.

  A seventh aspect of the present invention is the ventilating fan according to the sixth aspect, characterized in that the electric motor for rotating the blades is attached to the upper part of the sky of the frame body.

  The present invention according to claim 8 is the ventilating fan according to claim 1 or 2, wherein the motor fixing device is provided in a U-shape and is elongated in a direction in which the bearing support base and the motor are parallel to each other in the axial center interval direction. The elongated holes are provided in the frame body to fix the electric motor fixture.

  According to a ninth aspect of the present invention, in the ventilating fan according to the first or second aspect, an adjustment bolt and nut or a screw hole configuration for adjusting a distance between the frame body and the electric motor fixture is provided.

  According to a tenth aspect of the present invention, in the ventilating fan according to any one of the first to ninth aspects, the motor fixing member is housed in the region of the frame body by rotation and can be opened during construction.

  The present invention according to claim 11 is characterized in that in the ventilation fan according to any one of claims 1 to 10, an outer frame is disposed on the outer periphery of the framework frame main body and stored in a box structure.

  According to a twelfth aspect of the present invention, in the ventilation fan of the eleventh aspect, a rotating tool is provided on the frame frame main body, and a protective guard that can be opened and closed is provided.

  According to a thirteenth aspect of the present invention, in the ventilation fan according to the first or second aspect, the frame body can be separated into a frame and a frame body.

  As is clear from the above description, according to the present invention, a bearing support base for fixing a bearing portion, which is a heavy object, and a motor fixture for fixing a motor are attached to a frame body, and a blade attached to the rotating shaft is attached thereto. The bell fan made of foam molding resin material is arranged separately in the center of the framework frame main body, and even if the blade diameter is increased, the ventilation fan is made of foam molding resin material. By reducing noise with bellmouth, it is possible to provide a ventilation fan that is effective in improving the growth of livestock and poultry by taking measures against noise in the neighboring residents.

  In addition, by using a bell mouth structure formed of a foam molded resin material, it is possible to reduce the weight, solve problems in workability associated with an increase in size, and facilitate maintenance and inspection.

  In the first embodiment of the present invention, a bearing support base that fixes a bearing portion that pivotally supports a rotating shaft having a fan pulley attached to a skeleton frame body and an electric motor fixture that fixes an electric motor are attached to the rotating shaft. By adopting a configuration with blades, heavy objects are borne by the framework frame body, and the bell mouth can be attached separately, so the restrictions on the weight and strength of the bell mouth material and shape are greatly relaxed. It is possible to provide a bell mouth on demand.

  In the second embodiment of the present invention, a bearing support base that fixes a bearing portion that pivotally supports the rotating shaft and a motor fixing tool that directly fixes the motor are attached to the frame body, and the motor is directly attached to the rotating shaft. By fitting and having a configuration in which blades are attached to the rotating shaft, heavy objects are borne by the framework frame body, and the bell mouth can be constructed separately, so the weight and strength of the bell mouth material and shape are The restrictions are greatly relaxed, and Bellmouth can be provided according to market requirements.

  According to a third embodiment of the present invention, in the ventilation fan of the first or second embodiment, two frames are provided on the frame frame main body, and a support is provided between the frames and above the frame frame main body. Is provided with a bearing support at the center position.

  According to a fourth embodiment of the present invention, in the ventilation fan of the first or second embodiment, the bell mouth is made of a foam molded resin material, so that a lightweight and sound absorbing foamable material is used. Since it can be a bell mouth, it is possible to absorb airflow sound generated with the rotation of the blades and to reduce the weight.

  According to the fifth embodiment of the present invention, in the ventilation fan of the fourth embodiment, the bell mouth can be attached to each individual piece of bell mouth by forming the bell mouth into four pieces. The bell mouth can be easily manufactured and assembled.

  In the sixth embodiment of the present invention, in the ventilating fan of the first or second embodiment, an airflow is directly applied to the motor by providing the motor that rotates the blades in the ventilation channel. The cooling action comes to work.

  According to the seventh embodiment of the present invention, in the ventilation fan of the sixth embodiment, an electric motor that rotationally drives the blades is attached to the upper part of the sky of the skeleton frame main body, so that the electric motor can be The water drainage of the part is good, and it is possible to prevent a decrease in electrical insulation.

  According to an eighth embodiment of the present invention, in the ventilation fan of the first or second embodiment, an electric motor fixture is provided in a U-shape, and is long in a direction in which the bearing support base and the electric motor are parallel to each other in the axial center interval direction. By providing the elongated frame-like elongated hole in the frame frame main body to fix the electric motor fixing tool, the electric motor fixing tool can be easily attached and detached, and the assembling work and maintenance can be facilitated.

  In the ventilation fan of the first or second embodiment, the ninth embodiment of the present invention has an adjustment bolt and nut or screw hole configuration for adjusting the distance between the frame frame main body and the electric motor fixture. Adjustment of the distance between the motor pulley and fan pulley and replacement of the belt become simple, and construction and maintenance inspection can be facilitated.

  The tenth embodiment of the present invention is configured such that, in the ventilation fan of the first to ninth embodiments, the motor fixing device is accommodated in the region of the frame body by rotation and can be opened during construction. Thus, the electric motor and other ventilation fans can be shipped and arranged separately.

  In the eleventh embodiment of the present invention, in the ventilation fans of the first to tenth embodiments, the outer frame is arranged on the outer periphery of the skeleton frame body and stored in the box structure, so that the outer shape is A box-shaped cube improves the installation and handling of the main body.

  In the twelfth embodiment of the present invention, in the ventilation fan according to the eleventh embodiment, the frame frame main body is provided with a rotating tool and is provided with a protective guard that can be opened and closed easily. The maintenance work for the internal pulley and motor can be performed in a short time.

  The thirteenth embodiment of the present invention is configured such that in the ventilation fan of the first or second embodiment, the skeleton frame body can be separated into a frame and a skeleton body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Example 1)
A first embodiment of the present invention will be described with reference to FIGS. 1 is an external perspective view showing a ventilation fan according to a first embodiment of the present invention, FIG. 2 is a cutaway side view showing the ventilation fan, FIG. 3 is an external perspective view showing a skeleton frame body of the ventilation fan, and FIG. FIG. 5 is an external perspective view showing an adjustment structure of the electric motor fixture, and FIG. 6 is an external perspective view showing the relationship between the frame body and the bell mouth. As shown in FIGS. 1 to 6, the frame 1 is formed by welding the L-shaped steel 2, which is a frame lightweight equilateral angle steel, in a square shape. The frame 3 has two L-shaped steel bases 4 with bent end portions A and B arranged in parallel, and a required through hole 6 which is a bearing support base 5 (described later) and a mounting screw hole at the center thereof. 7 is welded and fixed to a rectangular steel plate, and is positioned between the bearing support 5 and the end A of the two parallel mounts 4 and is connected to the ends of the two parallel mounts 4. A support 10 having an L-shape that supports an electric motor fixture 8 (described later) on the inner side of the part A and facing the bearing support 5 and having a height adjusting hole 9 in the center is welded. It is fixed. Further, between the support 10 and the end A of the two parallel mounts 4, two elongated holes 11 for mounting two pairs of motor fixing tools 8 are provided on opposite sides of the two mounts 4. Then, the frame frame body 12 is constructed by welding and fixing the end portions A and B of the frame 3 to the L-shaped steel 2 that is the opposite side of the square frame 1.

  A bearing portion 21 is screwed and fixed to the mounting screw hole 7 in the through hole 6 provided in the bearing support base 5 of the frame frame main body 12, and is pivotally supported through the bearing portion 21. A blade 23 is attached and fixed to the end of the rotating shaft 22, and a fan pulley 24 is attached and fixed to the opposite shaft end.

  The electric motor fixture 8 has a U-shaped rail shape, has two pairs of female screw holes C (not shown) on both the U-shaped walls, and has a configuration in which the end D is cut out in a concave shape. It is a steel plate and has an electric motor 25 attached thereto. Then, an electric motor fixture 8 having an electric motor 25 attached thereto is disposed at a position opposite to the blades 23 between the two mounts 4 with a concave portion at an end sandwiched between the support fixture 10 and the female screw. For the height adjustment of the support 10 provided on the gantry 4 by temporarily fixing the gantry 4 and the electric motor fixture 8 from the elongated holes 11 of the gantry 4 provided corresponding to the holes C via the mounting bolts 26. After adjusting the mounting position of the electric motor fixture 8 through the hole 9, the adjustment bolt 28 is locked to the height adjustment screw hole 27 provided in the electric motor fixture 8, and the adjustment bolt 29 is moved forward and backward. The electric motor fixture 8 is permanently fixed to the gantry 4.

  An electric motor 25 having a motor pulley 30 attached thereto is fixed to the electric motor fixture 8 so as to be flush with the fan pulley 24, and a belt 31 is hung on the motor pulley 30 and the fan pulley 24.

  A total of 16 bell mouth mounting holes 33 are provided on the L-shaped steel 2 on each side of the frame body 12 on the mounting side of the blades 23 in total. Then, a bell mouth 35 (not shown) made of foam molding resin having a sound absorbing effect is divided into four parts, and a bell mouth holding through hole 34 is also provided in the four-part bell mouth 32 which is one piece. Then, a four-segment bell mouth 32 is aligned with the L-shaped steel 2, and a tapping screw with a flat washer is passed through the four-mouth bell mouth 32 from the bell mouth retaining through hole 34 and fixed to the bell mouth mounting hole 33. To do. Then, the quadruple bell mouth 32 is sequentially attached to the L-shaped steel 2 to form the bell mouth 35 of the ventilation fan.

  In the above configuration, when the electric motor 25 rotates, the rotational force is transmitted from the motor pulley 30 to the fan pulley 24 via the belt 31, and the blade 23 on the bell mouth 32 side of the rotation 22 is rotationally driven to blow air. In this configuration, since heavy objects such as the electric motor 25 and the blade 23 are attached and fixed to the frame body 12, the bell mouth 32 can use a foam molding resin having a sound absorbing effect. It is possible to absorb the airflow sound generated by the rotation of the fan, and to provide a ventilation fan with reduced noise without providing a separate sound absorbing device for the ventilation fan. At the same time, the weight can be reduced.

  Further, the mounting bolt 26 of the motor fixing tool 8 is loosened, the adjusting bolt 28 is moved forward and backward to move the mounting position of the motor fixing tool 8 to adjust the tension of the belt 31, and the bolt of the mounting bolt 26 that has been loosened first is tightened and fixed. To do.

  Moreover, the electric motor 25 for a drive is installed in the upper part of the frame frame main body 12, and the said electric motor 25 is attached to the upper position from the ground at the time of installation of a livestock barn and a poultry house. As a result, it is possible to provide a ventilating fan that has an effect of preventing the deterioration of the electrical insulation of the motor part and improving the maintenance safety even when the building is regularly or irregularly cleaned to ensure food hygiene safety.

  Further, the motor fixing tool 8 is rotated 90 degrees from the above-mentioned attachment state, so that the two L-shaped steel bases 4 are accommodated in the parallel arrangement part, and the U-shaped tip part does not protrude. Become. And the electric motor 25 can be attached by opening it at the time of construction after carrying. Therefore, the electric motor 25 and other ventilation fans can be shipped and arranged separately, and flexible arrangements are possible.

  A direct connection structure in which the mounting position of the electric motor 25 is lowered, the fan pulley 24, the motor pulley 30, and the belt 31 are removed, and the shaft of the electric motor 25 is connected to the bearing portion 21 may be employed.

  Note that the frame 1 and the frame 3 are integrated with the frame body 12, but this is separated into the frame 3 and the frame 1, and the frame 1 is fixed to the frame 3 with screws. It is also possible.

(Example 2)
The second embodiment is different from the first embodiment in that the ventilation fan of the first embodiment has a configuration in which a plate is provided around it and a configuration in which a protective guard is provided on the plate with an openable opening / closing tool. Is the same as that of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted. 6 is an external perspective view showing the relationship between the frame body and the bell mouth, and FIG. 7 is an external perspective view showing a ventilating fan according to Embodiment 2 of the present invention. A plurality of outer frame fixing nuts 41 are welded to the four sides of the L-shaped steel that contacts the outer frame 1 of the frame frame main body 12 at a required interval, and the outer frame 42 corresponding to the outer frame fixing nut 41 has a nut. Make a hole that is slightly larger than the screw hole and tighten it with bolts from outside the ventilation fan. Further, on the upstream side of the outer frame 42, four hinges 43 are provided in parallel with the gantry 4, and two pairs of protective guards 44 are provided on the hinges 43 so as to have a double door opening structure.

  In the above configuration, since the conventional ventilation fan is thin and flat, it cannot be placed in the vertical direction with respect to the ground, but by providing the outer frame 42, it can be stored, transported, and constructed. Can also be temporarily placed on the ground in the vertical direction, so that handling becomes easy and man-hours and the like are reduced.

  In addition, since the wire mesh-shaped protective guard 44 can be opened and closed in a double-split manner, the protective guard 44 is removed during maintenance work at a high place where the ventilation fan is attached to a high place, temporarily placed on the ground, and again at the end of the work. Although the work of attaching has occurred, since it is possible to replace the belt while the protective guard 44 is open, it is possible to reduce the number of maintenance work steps.

  The ventilation fan according to the present invention is not limited to animal husbandry, and can be used widely and generally safely in view of the configuration and the operational effects of the configuration.

1 is an external perspective view showing a ventilation fan according to Embodiment 1 of the present invention. Broken side view showing the ventilation fan External perspective view showing the frame body of the ventilation fan External perspective view showing the electric motor fixture External perspective view showing the adjustment structure of the electric motor fixture External perspective view showing the relationship between the frame body and the bell mouth External appearance perspective view which shows the ventilation fan by Example 2 of this invention Cutaway side view of the main part showing the configuration of a conventional ventilation fan Front view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 3 Frame 4 Base 5 Bearing support stand 8 Electric motor fixing tool 10 Support tool 11 Elongated hole 12 Frame frame main body 21 Bearing part 22 Rotating shaft 23 Blade 24 Fan pulley 25 Electric motor 30 Motor pulley 32 Four division bell mouth 42 Outer frame 44 Protection guard

Claims (13)

A frame frame body having a bearing support base for fixing a bearing portion that supports a rotating shaft on which a fan pulley is mounted, and a motor fixture for fixing an electric motor on which a motor pulley is mounted can be attached to the frame frame body, and the rotating shaft A ventilation fan having a blade mounted on the fan pulley and a belt that rotates on the fan pulley and the motor pulley to rotate the blade, the bell mouth forming an opening in the center of the skeleton frame body is formed separately. The ventilator is characterized in that the bell mouth is disposed on the frame body. A frame body having a bearing support for fixing a bearing portion that supports the rotating shaft, and an electric motor fixture for fixing an electric motor directly connected to the rotating shaft can be attached to the frame body, and attached to the rotating shaft. It is a ventilation fan provided with a blade, wherein a bell mouth that forms an opening in the center of the frame frame main body and the outer frame is configured separately, and the bell mouth is arranged in the frame frame main body. Ventilating fan. 3. The frame according to claim 1, wherein two frames are provided on the frame body, and a support is provided at a central position between the frames and above the frame frame body. 4. Ventilation fan. The ventilation fan according to claim 1 or 2, wherein the bell mouth is formed of a foamed resin material. 5. The ventilation fan according to claim 4, wherein the bell mouth is formed of four pieces. The ventilation fan according to claim 1 or 2, wherein an electric motor for rotationally driving the blades is provided in the ventilation channel. The ventilation fan according to claim 6, wherein an electric motor for rotationally driving the blades is attached to an upper sky of the frame body. An electric motor fixing tool is provided in a U-shape, and a long and narrow elongate mounting hole that is elongated in a direction parallel to the axial center of the bearing support base and the electric motor is provided in the frame body to fix the electric motor fixing tool. The ventilation fan according to claim 1 or 2. The ventilation fan according to claim 1 or 2, wherein an adjustment bolt and nut or screw hole configuration for adjusting a distance between the frame body and the electric motor fixture is used. The ventilating fan according to any one of claims 1 to 9, wherein the electric motor fixture is configured to be accommodated in a region of the frame body by rotation and to be opened at the time of construction. The ventilation fan according to any one of claims 1 to 10, wherein an outer frame is disposed on an outer periphery of the frame frame main body and stored in a box structure. The ventilation fan according to claim 11, wherein a rotating tool is provided on the frame body and a protective guard that can be freely opened and closed is provided. The ventilation fan according to claim 1 or 2, wherein the frame body is separable into a frame and a frame.

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