JP3230978U - Indoor blower and overhead crane with indoor blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of heating and cooling by circulating air in a building having a large-scale space to promote ventilation by using an overhead crane installed in a factory or a warehouse at a low cost. Space-saving and labor-saving that can automatically promote air circulation and ventilation in the building and maintain a comfortable working environment just by using an indoor blower that can be used and an overhead crane while operating in a factory or warehouse. To provide an overhead crane with an indoor blower with excellent properties.
SOLUTION: This is an indoor blower 13 attached to an overhead crane 11 installed on the ceiling of a building to promote ventilation inside the building, and is a hollow case main body 14 and the middle of the case main body 14 in the longitudinal direction. It has a plurality of intake units 15 provided in the case body 14, a plurality of exhaust ports 17 formed in the case body 14, and a plurality of blowers 18 built in the case body 14, and is sucked from the intake unit 15 by the blower 18. The air inside the building is exhausted from the exhaust port 17 to the inside of the building.
[Selection diagram] Fig. 1

Description

The present invention relates to an indoor blower for circulating air inside a building having a large space such as a factory or a warehouse to promote ventilation, and an overhead crane with an indoor blower.

Conventionally, an exhaust ventilation fan has been installed on the wall surface or ceiling of a building to ventilate the inside of various buildings. However, in a building with a large space such as a factory or warehouse, the distance from the center of the building to the wall surface is long and the ceiling is high, so it is said that sufficient ventilation cannot be performed only with the air volume of the exhaust fan. There's a problem. Further, if the indoor ventilation is insufficient and the air remains stagnant, the indoor temperature tends to rise in the summer, which causes deterioration of the working environment and the occurrence of heat stroke. Further, even when an air conditioner is installed indoors, there is a problem that air circulation becomes insufficient in a large-scale space, the efficiency of air conditioning tends to decrease, and energy saving is lacking.
Therefore, for example, in Patent Document 1, in a large-scale space air-conditioning system that promotes ventilation of a large-scale space such as a factory or a warehouse to air-condition the large-scale space, the outside air is below the large-scale space to be air-conditioned. The air conditioner for introducing the air conditioner is arranged, and the air conditioner for exhausting the inside air is arranged at a height of 50% or more of the height to the ceiling on the wall surface of the large-scale space.

Japanese Unexamined Patent Publication No. 2019-70480

Patent Document 1 intends to promote ventilation of a large-scale space by installing an intake air blower that introduces outside air in addition to an exhaust blower. However, since the intake blower is installed near the wall surface on one side and the exhaust blower is installed on the wall surface on the other side facing the wall surface on one side, in a large-scale space, from the intake blower to the exhaust blower. There is a problem that the distance becomes long and the effect of promoting ventilation cannot be sufficiently obtained. Further, Patent Document 1 also describes that the intake air blower is mounted on a trolley or the like and moved, but manpower is required to move the intake air blower by the trolley or the like, and labor saving is lacking. There was a problem. Furthermore, when outside air is sucked from the opening of a large-scale space by an intake blower, the temperature of the large-scale space fluctuates due to the influence of the temperature of the outside air, so that the efficiency of heating and cooling tends to deteriorate, resulting in energy saving. There was a problem of lacking. Especially in winter, when cold outside air is introduced and the temperature of a large-scale space is lowered, the comfort of the working environment is impaired, which leads to a decrease in work efficiency.
In addition, in 2020, a ministerial ordinance (Chapter 1, Article 1 of the Dust Hazard Prevention Regulations) to partially revise the Dust Hazard Prevention Regulations and Occupational Safety and Health Regulations was announced by the Labor Standards Bureau of the Ministry of Health, Labor and Welfare, and the target businesses As a duty, it was stipulated that efforts should be made to take necessary measures such as improving the working environment in order to prevent health problems of workers exposed to dust. Therefore, in factories that use welding machines that generate welding fume (metal vapor of condensed fine particles), it is necessary to discharge the welding fume that rises upward (ceiling side) inside the building and floats to the outside of the building. ing.
The present invention was made in view of such circumstances, and can be installed at low cost by using an overhead crane installed in a factory or warehouse, and circulates and ventilates the air in a building having a large space. A comfortable work environment that automatically promotes air circulation and ventilation in the building by simply using an indoor blower that can promote air circulation and ventilation in the building and an overhead crane while operating in a factory or warehouse. It is an object of the present invention to provide an overhead crane with an indoor blower, which is excellent in space saving and labor saving.

The indoor blower according to the first invention according to the above object is an indoor blower attached to an overhead crane installed on the ceiling of a building to promote ventilation inside the building.
A hollow case body, one or more intake portions provided in the middle of the case body in the longitudinal direction, one or more exhaust ports formed in the case body, and one or a plurality of exhaust ports built in the case body. It has a plurality of blowers, and exhausts the air inside the building sucked from the intake portion by the blower to the inside of the building from the exhaust port.

In the indoor blower according to the first invention, it is preferable that the case body is attached along the longitudinal direction of the garter (also referred to as girder) of the overhead crane.
Here, the case body is preferably attached to the bottom of the garter, but can also be attached to the side of the garter. When the overhead crane has two pairs of garters, the case body may be attached to one of the garters.

In the indoor blower device according to the first invention, a plurality of the exhaust ports are arranged on at least one side surface parallel to the longitudinal direction of the case body at intervals in the longitudinal direction of the case body, and each of the exhaust ports is arranged. It is preferable that the blowers are arranged so as to face each other, and the intake portion is arranged on one side and / or the other side in the longitudinal direction of the case body with respect to each blower.

In the indoor blower device according to the first invention, even if the exhaust port is arranged on one side and / or the other side end surface of the case body in the longitudinal direction and the blower is arranged facing each exhaust port. Good.

In the indoor blower according to the first invention, one or a plurality of auxiliary intake air blowers are built in the middle of the case body in the longitudinal direction, and one side of the case body in the longitudinal direction with respect to each auxiliary intake air blower. And / or preferably, the intake portion is arranged on the other side.

The indoor blower device according to the first invention may be divided into an intake unit having the intake portion and a blower unit having the blower built-in.

The indoor blower according to the first invention may be divided into an intake unit having the intake unit, a blower unit having the blower built-in, and an auxiliary blower unit having the auxiliary intake blower built-in.

In the indoor blower according to the first invention, the intake portion includes a main duct attached to the inside of the case body along the longitudinal direction of the case body, and a bottom opening formed on the bottom surface of the case body. And / or a side opening formed on at least one side surface parallel to the longitudinal direction of the case body, and a vertical duct and / or one with one side connected to the main duct and the other side connected to the bottom opening. The side may have a horizontal duct connected to the main duct and the other side connected to the side opening.
Here, it is preferable that the main ducts of the intake portions adjacent to each other in the longitudinal direction of the case body are connected to each other, but they may not be connected to each other.

The overhead crane with an indoor blower according to the second invention according to the above object relates to an overhead crane installed on the ceiling of a building and a first invention attached to the overhead crane to ventilate the inside of the building. It is equipped with an indoor blower.

According to the indoor blower according to the first device, by attaching to an overhead crane installed on the ceiling of a building, it can be attached at low cost without the need for a separate hanging means or supporting means. The space on the ceiling can be used effectively. In addition, the intake unit, the exhaust port, and the blower are integrated in the case body, which is excellent in handleability and workability. Then, just by using the overhead crane during operation, the indoor blower is moved together with the overhead crane to automatically promote air circulation and ventilation in the building, improve the efficiency of heating and cooling, and maintain a comfortable working environment. It is possible to save labor and energy. In addition, various types of dust such as welding fume generated inside the building should be discharged to the outside of the building reliably and efficiently to create a safe working environment and prevent health problems of workers (workers). Can be done.

In the indoor blower according to the first invention, when the case body is attached along the longitudinal direction of the garter of the overhead crane, the length of the garter is used to efficiently arrange the intake part, the blower and the exhaust port. can do.

In the indoor air blower according to the first invention, a plurality of exhaust ports are arranged on at least one side surface parallel to the longitudinal direction of the case body at intervals in the longitudinal direction of the case body, and face each exhaust port. When the blowers are arranged and the intake part is arranged on one side and / or the other side in the longitudinal direction of the case body for each blower, each blower surely sucks the air in the building from the intake part. The air inside the building is promoted by flowing the air inside the building toward the ventilation fan installed in the direction perpendicular to the longitudinal direction of the case body, which can be discharged from each exhaust port, and the circulation efficiency of the air inside the building is improved. Can be enhanced.

In the indoor blower device according to the first invention, when the exhaust ports are arranged on one side and / or the other end surface of the case body in the longitudinal direction and the blowers are arranged facing each exhaust port, the case body The air in the building can be flowed toward the ventilation fan attached to one side and / or the other side in the longitudinal direction to promote the exhaust.

In the indoor blower according to the first invention, one or more auxiliary intake air blowers are built in the middle of the case body in the longitudinal direction, and one side of the case body in the longitudinal direction and / or When the intake unit is arranged on the other side, even if the case body is long, the air in the building sucked by each auxiliary intake blower is taken from one side and / or the other side in the longitudinal direction of the case body. It can be sent toward the exhaust port on the end face, and the air in the entire building can be circulated evenly to improve the circulation efficiency.

When the indoor blower device according to the first invention is divided into an intake unit having an intake unit and a blower unit having a built-in blower, the number and arrangement of the intake unit and the blower unit are appropriately selected to blow indoors. The device can be manufactured, and it is excellent in workability and versatility.

When the indoor blower according to the first invention is divided into an intake unit having an intake unit, a blower unit having a built-in blower, and an auxiliary blower unit having a built-in auxiliary intake blower, the intake unit and the blower The indoor blower can be manufactured by appropriately selecting the number and arrangement of units and auxiliary blower units, and is excellent in workability and versatility.

In the indoor blower according to the first invention, the intake portion is attached to the inside of the case body along the longitudinal direction of the case body, and the bottom opening and / or the case formed on the bottom surface of the case body. Side openings formed on at least one side parallel to the longitudinal direction of the body, vertical ducts with one side connected to the main duct and the other side connected to the bottom opening and / or one side connected to the main duct and the other When the side has a horizontal duct connected to the side opening, the air in the building sucked from the bottom opening and / or the side opening is guided by the vertical duct and / or the horizontal duct to the main duct. It can be taken in and smoothly moved toward each exhaust port.

According to the overhead crane with an indoor blower according to the second device, only by using the overhead crane during operation, air circulation and ventilation in the building are automatically performed without any special operation or complicated control. It is possible to promote the efficiency of heating and cooling and maintain a comfortable working environment.

It is a top view of the overhead crane with an indoor blower which concerns on 1st Embodiment of this invention. It is a side view of the overhead crane with an indoor blower. It is a front sectional view of the main part which shows the exhaust port of the indoor blower attached to the overhead crane with the indoor blower. It is a main part regular sectional view which shows the intake part of the indoor blower attached to the overhead crane with the indoor blower. It is a top view of the overhead crane with an indoor blower which concerns on the 2nd Embodiment of this invention. It is a side view of the overhead crane with an indoor blower. It is a top view of the modification of the overhead crane with an indoor blower. It is a side view of the modification.

Subsequently, the embodiment in which the present invention is embodied will be described with reference to the attached drawings, and the present invention will be understood.
The overhead crane 10 with an indoor blower according to the first embodiment of the present invention shown in FIGS. 1 to 4 promotes ventilation inside the building 12 to the overhead crane 11 installed on the ceiling of the building 12. By installing the indoor blower 13, the air in the building 12 having a large space such as a factory or a warehouse is circulated to promote ventilation, improve the efficiency of heating and cooling, and maintain the working environment in the building 12 comfortably. It is a thing. The left-right directions of FIGS. 1 and 2 are the front-rear directions of the overhead crane 10 with an indoor blower and the overhead crane 11.
As shown in FIGS. 1, 2, and 4, the indoor blower 13 includes a hollow case main body 14 and a plurality of (five in this case) intake portions 15 provided in the middle of the case main body 14 in the longitudinal direction. Have. Further, as shown in FIGS. 1 to 3, the indoor blower 13 is parallel to the longitudinal direction of the case body 14 (here, the right side of the overhead crane 11 and the upper side of FIG. 1) on the side surface 16 of the case. A plurality of (four in this case) exhaust ports 17 formed at intervals in the longitudinal direction of the main body 14 and a plurality of (four in this case) exhaust ports 17 built in the case main body 14 and arranged to face each exhaust port 17. ) With a blower 18.

As shown in FIGS. 1, 2, and 4, each intake unit 15 has a main duct 19 attached to the inside of the case body 14 along the longitudinal direction of the case body 14. Further, a bottom surface opening 21 is formed on the bottom surface 20 of the case body 14, and a side surface opening 23 is formed on the other side surface 22 parallel to the longitudinal direction of the case body 14. Each of the intake portions 15 is a vertical duct 25 in which one side communicates with the main duct 19 and the other side communicates with the bottom opening 21 and a horizontal duct in which one side communicates with the main duct 19 and the other side communicates with the side opening 23. It has 26 and.
By arranging the intake unit 15 on one side and / or the other side in the longitudinal direction of the case body 14 for each blower 18, each blower 18 reliably sucks the air in the building 12 from the intake unit 15. Then, it can be discharged from each exhaust port 17. As shown in FIG. 3, the blower 18 is rotatably attached around an extension line of the axis of the main duct 19, and the air discharge direction (blower direction) is adjusted by the rotation angle. be able to. The exhaust port 17 can be formed in a vertically long hole shape corresponding to the rotation range of the blower 18, but the shape can be appropriately selected.

In the present embodiment, four exhaust ports 17 and four blowers 18 are arranged for each of the five intake units 15, but the number and arrangement of these are appropriately determined according to the size of the building 12, the capacity of the blower, and the like. You can choose. For example, three or more intake units may be continuously arranged between the two blowers, or one intake unit, one exhaust port, and one blower may be arranged.
It is preferable that the main ducts 19 of the intake portions 15 adjacent to each other in the longitudinal direction of the case main body 14 are connected (joined), but the end faces of the two main ducts 19 may be abutted against each other or are continuous (adjacent). It is also possible to attach one long main duct from the beginning to a plurality of intake portions arranged in the same manner. The main duct is formed by attaching partition plates 27 to both ends of the intake portion 15 in the longitudinal direction so as to be orthogonal to the longitudinal direction of the case body 14 and forming communication holes 28 equivalent to the outer diameter of the main duct 19. Both ends of the 19 in the longitudinal direction are held by the partition plates 27, and the outer periphery of the main duct 19 can be blocked to prevent the air flowing through the main duct 19 from leaking to the outside of the main duct 19. In the present embodiment, a part of the side surface 16 and the bottom surface 20 on one side of the case body 14 where the exhaust port 17 is formed is curved in an arc shape, and the tip side (blower port) of the blower 18 is the case body 14. Although it is designed to project to the outside, the present invention is not limited to this, and the cross-sectional shape of the case body may be formed in a quadrangular shape like other parts (intake parts).
A mesh-shaped cover can be appropriately attached to the bottom opening 21, the side opening 23, and the communication hole 28, and filters are attached to the main duct 19, the vertical duct 25, and the horizontal duct 26, if necessary. Etc. can be attached to collect dust contained in the air.

With the above configuration, each blower 18 can suck the air inside the building 12 from the intake portion 15 (bottom opening 21 and side opening 23) and discharge it from the exhaust port 17 into the building 12. At this time, by arranging the exhaust port 17 so as to face the ventilation fan attached to the building 12, the air in the building 12 sucked by the intake unit 15 can flow from the exhaust port 17 toward the ventilation fan. Ventilation inside the building 12 can be promoted, and dust and the like floating in the building can be forcibly discharged to the outside. Even if the height of the exhaust port 17 and the height of the ventilation fan do not match, the air discharge direction (blower direction) is adjusted to the height of the ventilation fan by rotating the blower 18 as described above. Can be adjusted.
The blower 18 is not particularly limited, and conventionally known blowers 18 can be appropriately selected and used. As a material other than the blower 18, a metal such as stainless steel is preferably used, but synthetic resins such as PP (polypropylene), PS (polystyrene), PC (polycarbonate), PVC (vinyl chloride resin), and ABS resin are used. It can also be used, and a plurality of materials may be combined.

In the present embodiment, the exhaust port 17 is formed only on one side surface 16 parallel to the longitudinal direction of the case body 14, and the side opening 23 is formed only on the other side surface 22, but only on one side surface. A side opening may be formed and an exhaust port may be formed only on the other side surface, or an exhaust port and a side opening may be formed on one side and the other side, respectively. In this case, for example, the exhaust ports and the side opening are arranged alternately, and the blower is selectively operated, so that the exhaust can be selectively exhausted from the exhaust ports formed on one or the other side surface. Further, on one side in the longitudinal direction of the case body, a side opening is formed on one side surface parallel to the longitudinal direction of the case body, and on the other side in the longitudinal direction of the case body, one side parallel to the longitudinal direction of the case body. Alternatively, if an exhaust port is formed on the other side surface, the air sucked from one side in the longitudinal direction of the case body can be exhausted from the other side in the longitudinal direction of the case body. By combining the arrangement of the side openings and the exhaust port and the operation of the blower in this way, various air flows can be selected.

Here, the overhead crane 11 to which the indoor blower 13 is attached has a pair of front and rear traveling rails 30 installed in the building 12. A saddle 32 having wheels 31 is placed on each traveling rail 30, and the two (front and rear) saddles 32 are connected by a pair of left and right garters 33. As a result, the pair of left and right garter 33 can travel on the traveling rail 30 in a state of being bridged by the pair of front and rear traveling rails 30. Further, the trolley 34 installed so as to straddle the pair of left and right garter 33 can move on the garter 33 along the longitudinal direction of the garter 33. Then, the case body 14 of the indoor blower 13 is located at the bottom of one of the two paired garter 33 (here, the right side of the overhead crane 11 and the upper side in FIG. 1) along the longitudinal direction of the garter 33. Is attached.
Therefore, during operation, only by using the overhead crane 10 (overhead crane 11) with an indoor blower while operating each blower 18, the indoor blower 13 is moved along the traveling rail 30 together with the overhead crane 11 (garter 33). Since it can be moved, even in a building 12 having a large-scale space, the entire air in the building 12 can be automatically circulated to promote ventilation, which is also effective as a dust countermeasure. In particular, with respect to the diffusion and retention of the welding fume in the building 12, there is an effect of attracting the welding fume to the outside (outdoor) by creating an air flow toward the ventilation fan, which is effective as a countermeasure against the welding fume. In addition, by circulating the air inside the building 12, the efficiency of heating and cooling can be improved, the temperature inside the building 12 can be made uniform, and a comfortable working environment can be maintained. Is also effective.
The structure of the overhead crane to which the indoor blower is attached is not particularly limited, and the indoor blower can be attached to the overhead cranes having various conventionally known structures, as an overhead crane with an indoor blower. Can be used. For example, in the present embodiment, a so-called double garter overhead crane having two (a pair of left and right) garter has been described, but a so-called single garter overhead crane having one garter can also be used. For a single garter, it is preferable to attach an indoor blower (case body) to the upper surface of the garter. However, if the effect of the indoor blower is not sufficient simply by forming the side opening in the case body, the case body should be formed wider than the garter and the bottom opening should not overlap with the garter on the bottom of the case body. Sufficient effect can be obtained by forming.

The indoor blower 13 forms an exhaust port 17, a bottom opening 21 and a side opening 23 in one long case body 14, and has a blower 18, a main duct 19, a vertical duct 25, and a horizontal duct 26. It can also be manufactured by attaching a partition plate 27 or the like having a communication hole 28 formed therein, but a bottom opening, a side opening and a communication hole are formed in a hollow rectangular case, and a main duct, a vertical duct and a horizontal duct are formed. It is also possible to attach a directional duct and independently manufacture an intake unit having an intake portion. Similarly, if an exhaust port and a communication hole are formed in a hollow rectangular parallelepiped case and a blower is attached, a blower unit having a built-in blower can be manufactured independently. Therefore, the indoor blower can be divided into an intake unit having an intake unit and a blower unit having a built-in blower, and the number and arrangement of the intake unit and the blower unit manufactured in advance can be determined by the size of the building 12 and the overhead crane. Depending on the size (length of the garter) and the like, it can be manufactured in combination as appropriate, and it is excellent in workability and versatility.

Next, the overhead crane 36 with an indoor blower according to the second embodiment of the present invention will be described. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
The difference between the overhead crane 36 with an indoor blower shown in FIGS. 5 and 6 from the overhead crane 10 with an indoor blower is that in the indoor blower 37, one side of the case body 14 in the longitudinal direction (here, FIGS. 5 and 6). On the end face of the case body (on the right side), a blower 39 facing the exhaust port 38 and the exhaust port 38 is arranged, and a plurality of (here, two) auxiliary intake blowers 40 are located in the middle of the case body 14 in the longitudinal direction. It is a point that the intake portion 15 is arranged on one side and / or the other side in the longitudinal direction of the case main body 14 with respect to each auxiliary intake blower 40 which is built-in.
Here, the exhaust port 38 and the blower 39 are arranged only on one end surface in the longitudinal direction of the case main body 14, but in the middle of the longitudinal direction of the case main body 14, the exhaust port 38 side (longitudinal length of the case main body 14). An auxiliary intake blower 40 that blows air toward (one side in the direction) is built in, and the intake portion 15 is arranged on one side and / or the other side in the longitudinal direction of the case body 14 with respect to the auxiliary intake blower 40. As a result, air can be reliably sucked from each of the intake portions 15 and sent toward the exhaust port 38, so that the air in the entire building 12 can be circulated evenly. A main duct 19a in which the other end side in the longitudinal direction is closed is used for the intake portion 15a arranged at the other end portion in the longitudinal direction of the case body 14. Further, the exhaust port and the blower may be arranged only on the other end surface of the case body in the longitudinal direction by exchanging one side and the other side in the longitudinal direction of the indoor blower (inverted left and right).

In the present embodiment, the exhaust port 38 and the blower 39 are arranged only on one end surface of the case main body 14 in the longitudinal direction. However, in the modified example of the overhead crane 42 with an indoor blower shown in FIGS. 7 and 8, the overhead crane 42 is indoors. In the blower 43, in addition to the exhaust port 38 and the blower 39, the same exhaust port 38a and the blower 39a are arranged on the other end surface of the case main body 14 in the longitudinal direction. In this case, the auxiliary intake blower 40 that blows air toward one side (exhaust port 38) of the case body 14 in the longitudinal direction with the central portion in the longitudinal direction of the case body 14 as a boundary, and the case body 14 in the longitudinal direction. By incorporating an auxiliary intake blower 40a that blows air toward the other side (exhaust port 38a), the air sucked from each intake unit 15 is distributed and sent toward the exhaust port 38 and the exhaust port 38a. Can be done.
The overhead crane 36 with an indoor blower and the overhead crane 42 with an indoor blower can be used properly with the overhead crane 10 with an indoor blower according to the position of the ventilation fan attached to the building 12, and the overhead crane with an indoor blower can be used properly. It has the same action and effect as 10.
The overhead crane 36 with an indoor blower and the overhead crane 42 with an indoor blower also have an intake unit having an intake unit, a blower unit with a built-in blower, and an auxiliary intake blower, similarly to the overhead crane 10 with an indoor blower. It can be easily manufactured by dividing it into auxiliary ventilation units.

Although the embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above embodiment, and is considered within the scope of the matters described in the claims for utility model registration. It also includes other embodiments and variations thereof.
For example, the first embodiment may be combined with a modification of the second embodiment or the second embodiment.
Further, in the above embodiment, the intake portion having the bottom opening, the side opening, the vertical duct and the horizontal duct has been described, but it depends on the scale (area) of the building, the mounting position of the overhead crane, and the like. Can be used having only a bottom opening and a vertical duct, or having only a side opening and a horizontal duct. When the intake portion has only the bottom opening and the vertical duct, the case body can be attached to the side portion in addition to being attached to the bottom portion of the garter of the overhead crane.

10: Overhead crane with indoor blower, 11: Overhead crane, 12: Building, 13: Indoor blower, 14: Case body, 15, 15a: Intake part, 16: Side, 17: Exhaust port, 18: Blower, 19 , 19a: Main duct, 20: Bottom, 21: Bottom opening, 22: Side, 23: Side opening, 25: Vertical duct, 26: Horizontal duct, 27: Partition plate, 28: Communication hole, 30: Travel rail, 31: Wheels, 32: Saddle, 33: Garter, 34: Trolley, 36: Overhead crane with indoor blower, 37: Indoor blower, 38, 38a: Exhaust port, 39, 39a: Blower, 40, 40a : Auxiliary intake blower, 42: Overhead crane with indoor blower, 43: Indoor blower

Claims (9)

An indoor blower that is attached to an overhead crane installed on the ceiling of a building and promotes ventilation inside the building.
A hollow case body, one or more intake portions provided in the middle of the case body in the longitudinal direction, one or more exhaust ports formed in the case body, and one or a plurality of exhaust ports built in the case body. An indoor blower having a plurality of blowers, wherein the air inside the building sucked from the intake portion by the blower is discharged from the exhaust port into the inside of the building. The indoor blower according to claim 1, wherein the case body is attached along the longitudinal direction of the garter of the overhead crane. In the indoor blower according to claim 1 or 2, a plurality of the exhaust ports are arranged on at least one side surface parallel to the longitudinal direction of the case body at intervals in the longitudinal direction of the case body, and each of the exhausts is provided. An indoor blower, wherein the blower is arranged so as to face the mouth, and the intake portion is arranged on one side and / or the other side in the longitudinal direction of the case body for each blower. In the indoor blower according to claim 1 or 2, the exhaust port is arranged on one side and / or the other end surface of the case body in the longitudinal direction, and the blower is arranged so as to face each of the exhaust ports. An indoor blower characterized by being present. In the indoor blower according to claim 4, one or a plurality of auxiliary intake air blowers are built in the middle of the case body in the longitudinal direction, and one side of the case body in the longitudinal direction and one side of the case body in the longitudinal direction and the case body / Or an indoor blower characterized in that the intake unit is arranged on the other side. The indoor blower according to any one of claims 1 to 4, wherein the indoor blower is divided into an intake unit having the intake unit and a blower unit incorporating the blower. The indoor blower according to claim 5, wherein the indoor blower is divided into an intake unit having the intake unit, a blower unit having the blower built-in, and an auxiliary blower unit having the auxiliary intake blower built-in. Blower. In the indoor blower according to any one of claims 1 to 7, the intake portion is formed inside the case body with a main duct attached along the longitudinal direction of the case body and on the bottom surface of the case body. The bottom opening and / or the side opening formed on at least one side surface parallel to the longitudinal direction of the case body, and the vertical direction in which one side is connected to the main duct and the other side is connected to the bottom opening. An indoor air blower comprising a duct and / or a horizontal duct having one side connected to the main duct and the other side connected to the side opening. The indoor blower according to any one of claims 1 to 8, which is attached to the overhead crane and is attached to the ceiling of the building to promote ventilation inside the building. Overhead crane with indoor blower.

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