JP2022069947A - Blowing device - Google Patents

Abstract

To provide a blowing device that can be installed with an existing suspension bolt fixed to a ceiling wall regardless of the size of the blowing device.SOLUTION: A blowing device 50 has: a joint part fixed to a plurality of suspension bolts 101; and a blowing machine 51, which includes a cabinet that has a mount having the joint part to be fixed thereto, an air inlet and an air outlet and is disposed below the joint part, and a blower to be housed in the cabinet. The joint part can be fixed to the suspension bolt 101 at a position corresponding to the suspension bolt 101 in the inner region and the outer region of the top face of the cabinet in a direction along the top face of the cabinet.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a blower installed behind the ceiling.

Conventionally, as a ventilation device installed behind the ceiling, a ventilation device that ventilates indoor air by connecting a suction duct that communicates with the room and a discharge duct that communicates with the outside has been used. This type of ventilation system is generally installed by hanging it on a hanging bolt embedded in the concrete of the ceiling wall. Then, when replacing the existing ventilation device with a new ventilation device, the suspension pitch, which is the distance between the suspension bolts used for installing the existing ventilation device, and the suspension bolt used for installing the new ventilation device. If the suspension pitch is the same, the new ventilation system is installed using the existing suspension bolts, that is, the existing suspension bolts already installed on the top wall.

In recent years, due to social changes such as the epidemic of the new coronavirus, the required ventilation volume in the room has been reviewed, and there are many cases where the ventilation device is replaced to change the ventilation air volume. However, in the replacement of the ventilation device, the size of the ventilation device may change from the size of the existing ventilation device as the air volume band of the ventilation air volume of the ventilation device changes. If the size of the new ventilator is different from the size of the existing ventilator, the suspension pitch of the suspension bolts required to install the new ventilator may also change. Therefore, when replacing the ventilation device, it may be necessary to add a new suspension bolt. If it is necessary to add a hanging bolt, the construction period for replacing the ventilation device becomes long, and the construction cost increases.

As a blower installed behind the ceiling, Patent Document 1 changes the position of the hanging bolt, which is an already constructed part, by providing an auxiliary metal fitting between the hanging metal fitting fixed to the upper surface of the ceiling and the blower main body. A ventilation fan that allows the installation of a blower body without the need for a blower is disclosed.

Japanese Patent No. 3575943

However, the ventilation fan disclosed in Patent Document 1 has a problem that the ventilation fan cannot be installed when the suspension pitch of the already installed suspension bolt is smaller than the size of the blower main body.

The present disclosure has been made in view of the above, and an object of the present invention is to obtain a blower device that can be installed by using an existing hanging bolt fixed to a top wall regardless of the size of the blower device.

In order to solve the above-mentioned problems and achieve the object, the blower device according to the present disclosure is a blower device suspended from a plurality of hanging bolts fixed to the upper surface of the ceiling and suspended. The blower has a connecting part to which a plurality of hanging bolts are fixed, and a housing having a mounting part fixed to the connecting part, an air inlet and an air exhaust port, and arranged below the connecting part. , A blower provided with a blower housed inside the housing. The connecting component can be fixed to the suspension bolt at a position corresponding to the suspension bolt in the inner region of the upper surface of the housing and the outer region of the upper surface of the housing in the direction along the upper surface of the housing.

According to the blower device according to the present disclosure, there is an effect that it can be installed by using an existing hanging bolt fixed to the top wall regardless of the size of the blower device.

A perspective view showing the appearance of the blower device according to the first embodiment. A side view showing the appearance of the blower device according to the first embodiment. Top view showing the appearance of the blower device according to the first embodiment. Sectional drawing which shows the cross section along the IV-IV line in FIG. A side view showing the appearance of the blower device according to the second embodiment. Top view showing the appearance of the blower device according to the second embodiment. A side view showing the appearance of the blower device according to the third embodiment. A side view showing the appearance of the blower device according to the fourth embodiment.

Hereinafter, the blower device according to the embodiment will be described in detail with reference to the drawings.

Embodiment 1.
FIG. 1 is a perspective view showing the appearance of the blower device according to the first embodiment. FIG. 2 is a side view showing the appearance of the blower according to the first embodiment. FIG. 3 is a top view showing the appearance of the blower according to the first embodiment. FIG. 4 is a cross-sectional view showing a cross section taken along the line IV-IV in FIG.

The blower device 50 includes a blower 51 and a connection plate 52. The ventilation device 50 is installed in the space of the ceiling 103 of the building, and the duct 12 and the duct 13 provided in the ceiling 103 are attached. In FIG. 2, the space between the top wall 100 and the ceiling panel 102 is the attic 103. Further, in FIG. 2, the space below the ceiling panel 102 is the room 104. The connection plate 52 is a connection component for connecting a plurality of suspension bolts 101, which will be described later, to the blower 51. In the present embodiment, the vertical direction corresponds to the height direction of the blower 51 in the blower installed in the ceiling 103.

The blower 51 sucks in the air in the room 104 and exhausts it to the outside for ventilation. The blower 51 includes an outer casing 3 which is a housing. The outer casing 3 connects the upper surface 3c, the first side surface 3d which is a side surface facing the front side, the second side surface 3e which is the side surface facing the front side, and the first side surface 3d and the second side surface 3e. It is a box body having a rectangular parallelepiped shape composed of two side surfaces, a third side surface 3f and a fourth side surface 3g, and a lower surface 3h. In the outer casing 3, the outer casing suction port 3a, which is an air suction port, is formed on the third side surface 3f, and the outer casing exhaust port 3b, which is an air exhaust port, is formed on the fourth side surface 3g.

A duct 12 provided in the attic 103 is attached to the outer casing 3 via the duct connecting component 9, and a duct 13 provided in the attic 103 is attached via the duct connecting component 10. That is, a duct connecting component 9 for communicating the inside of the outer casing 3 and the duct 12 via the outer casing suction port 3a is attached to the third side surface 3f. Further, a duct connecting component 10 for communicating the inside of the outer casing 3 and the duct 13 via the outer casing exhaust port 3b is attached to the fourth side surface 3g.

Further, a plurality of first connection bolts 41, which are attachment portions for attaching the connection plate 52 to the blower 51, are provided on the upper surface 3c of the outer casing 3. The plurality of first connection bolts 41 are provided so as to project from the upper surface 3c of the outer casing 3 toward the outside of the outer casing 3. That is, the plurality of first connection bolts 41 are provided so as to project upward when the blower device 50 is installed in the space of the ceiling 103 of the building. In the first embodiment, four first connection bolts 41 are provided on the upper surface 3c of the outer casing 3 as a plurality of first connection bolts 41.

That is, the outer casing 3 which is the housing of the blower 51 includes a plurality of first connection bolts 41 which are attachment portions to which the connection plate 52 which is a connection component is fixed, and the outer casing suction port 3a which is an air suction port. It has an outer casing exhaust port 3b, which is an air exhaust port, and is arranged below a connection plate 52, which is a connection component.

The internal configuration of the blower 51 will be described with reference to FIG. In the blower 51, a centrifugal blower 22 which is a blower portion is housed inside the outer casing 3. In the scroll casing 2 of the centrifugal blower 22, an impeller 4 which is a fan of the centrifugal blower 22 and a part of the motor 1 are installed. When the impeller 4 is driven by the motor 1, the outer casing 3 is connected to the outer casing 3 through the suction port 5 of the duct connection component 9 and the outer casing suction port 3a as shown by the working fluid flow 20 indicated by the arrow in FIG. Air flows in.

The air flowing into the outer casing 3 is branched in two directions in front of the scroll casing 2, and is sucked into the scroll casing 2 from the fan-side intake port 7 and the motor-side intake port 8 which are the intake ports of the centrifugal blower 22, respectively, and centrifuges. It is blown out from the discharge port 6 of the duct connection component 10 to the duct 13 through the outer casing exhaust port 3b that also serves as the exhaust port of the blower 22. As described above, the outer casing 3 includes a fan-side intake port 7 which is an intake port of the centrifugal blower 22 and an intake air passage 21 straddling between the motor-side intake port 8 and the suction port 5.

The blower 50 according to the first embodiment is installed in the space of the ceiling 103 of the building by being embedded in the top wall 100 and suspended from a plurality of hanging bolts 101 protruding toward the room 104. The connection between the plurality of suspension bolts 101 and the blower 51 is performed via the connection plate 52. The plurality of suspension bolts 101 are fixed and suspended in a state of protruding downward from the top wall 100 constituting the upper surface of the ceiling back 103, that is, in a state of projecting toward the room 104 side.

The connection plate 52 is provided with a plurality of through holes 52a in a predetermined arrangement pattern. The plurality of through holes 52a are provided in the region on the third side surface 3f side and the region on the fourth side surface 3g side in the surface of the connection plate 52. In the first embodiment, the through holes 52a of the connection plate 52 are arranged in a grid pattern in the plane of the connection plate 52.

The connecting plates 52 are arranged at intervals parallel to the upper surface 3c of the blower 51. That is, the connection plate 52 is arranged in a state of being separated from the upper surface 3c of the blower 51 and parallel to the upper surface 3c above the upper surface 3c. The connection plate 52 is connected to and fixed to the blower 51 by fixing a plurality of first connection bolts 41 using nuts 42 and washers (not shown). The connection plate 52 is fixed to the first connection bolt 41 by using the through hole 52a corresponding to the position of the first connection bolt 41 in a state of being arranged above the blower 51. Specifically, in the connection plate 52, the first connection bolt 41 is passed through the through hole 52a corresponding to the position of the first connection bolt 41, and is fixed to the first connection bolt 41 by using a nut 42 and a washer. ..

In FIG. 3, the tip region of the first connection bolt 41 is passed through four through holes 52a among the plurality of through holes 52a provided in the connection plate 52, and the first connection bolt is used by using the nut 42 and the washer. The 41 and the connection plate 52 are fixed.

The connection plate 52 can be used for blowers 51 having different sizes by widening the forming range of the through holes 52a and providing a plurality of through holes 52a. That is, the connection plate 52 can be attached to a plurality of types of blowers 51 having different arrangement positions of the plurality of first connection bolts 41 on the upper surface 3c of the outer casing 3 of the blower 51 by providing the plurality of through holes 52a.

Further, when the connection plate 52 is used exclusively for a specific blower 51, for example, among a plurality of through holes 52a, the connection plate 52 is a dedicated through hole for fixing the connection plate 52 to the first connection bolt 41. 52b may be provided. In FIG. 3, for ease of understanding, a dedicated through hole 52b is shown separately from the through hole 52a used for fixing to the first connection bolt 41.

Further, the connection plate 52 is fixed to the plurality of suspension bolts 101 by fixing the plurality of suspension bolts 101 suspended from the top wall 100 by using the nut 42 and a washer (not shown). The connection plate 52 is fixed to the plurality of suspension bolts 101 by using the through holes 52a corresponding to the positions of the plurality of suspension bolts 101 in a state where the blower 50 is arranged at the installation position below the top wall 100. ing. Specifically, in the connection plate 52, the suspension bolt 101 is passed through a through hole 52a corresponding to the position of the suspension bolt 101, and is fixed to the suspension bolt 101 by using a nut 42 and a washer. That is, the blower device 50 is fixed to a plurality of suspension bolts 101 via the first connection bolt 41 provided on the upper surface 3c of the outer casing 3 and the connection plate 52.

When the blower 50 is viewed from the top wall 100 side, the outer shape of the connection plate 52 in the in-plane direction of the connection plate 52 in the depth direction of the blower 51 is larger than the outer shape of the blower 51 in the in-plane direction of the connection plate 52. .. The connection plate 52 is also provided with a through hole 52a in a region larger than the outer shape of the blower 51 in the depth direction of the blower 51. It can be said that the region larger than the outer shape of the blower 51 in the depth direction of the blower 51 is the region outside the upper surface 3c of the outer casing 3 in the direction along the upper surface 3c of the outer casing 3. Therefore, even when the plurality of suspension bolts 101 are embedded in the top wall 100 in the depth direction of the blower 51 at a suspension pitch larger than the outer shape of the blower 51 in the in-plane direction of the connection plate 52, the plurality of suspension bolts 101 It becomes possible to connect the 101 and the connection plate 52. The depth direction of the blower 51 is the X direction in FIG.

Further, in the connection plate 52, a through hole 52a is provided in a region smaller than the outer shape of the blower 51 in the depth direction of the blower 51. A region smaller than the outer shape of the blower 51 in the depth direction of the blower 51 can be said to be an internal region of the upper surface 3c of the outer casing 3 in the direction along the upper surface 3c of the outer casing 3. Therefore, even when the plurality of suspension bolts 101 are embedded in the top wall 100 in the depth direction of the blower 51 at a suspension pitch smaller than the outer shape of the blower 51 in the in-plane direction of the connection plate 52, the plurality of suspension bolts 101 It becomes possible to connect the 101 and the connection plate 52.

Here, the case where the outer shape of the connection plate 52 in the in-plane direction of the connection plate 52 in the depth direction of the blower 51 is larger than the outer shape of the blower 51 in the in-plane direction of the connection plate 52 has been described as an example. In the width direction of the blower 51, the outer shape of the connection plate 52 in the in-plane direction of the connection plate 52 may be larger than the outer shape of the blower 51 in the in-plane direction of the connection plate 52. The width direction of the blower 51 is the Y direction in FIG.

Further, in the connection plate 52, a through hole 52a is provided in a region larger than the outer shape of the blower 51 in the width direction of the blower 51. As a result, even when the plurality of suspension bolts 101 are embedded in the top wall 100 in the width direction of the blower 51 at a suspension pitch larger than the outer shape of the blower 51 in the in-plane direction of the connection plate 52, the plurality of suspension bolts 101 are embedded in the top wall 100. It becomes possible to connect the 101 and the connection plate 52.

Further, in the connection plate 52, a through hole 52a is provided in a region smaller than the outer shape of the blower 51 in the width direction of the blower 51. As a result, even when the plurality of suspension bolts 101 are embedded in the top wall 100 in the width direction of the blower 51 at a suspension pitch smaller than the outer shape of the blower 51 in the in-plane direction of the connection plate 52, the plurality of suspension bolts 101. It becomes possible to connect the 101 and the connection plate 52.

That is, in the top view of the blower device 50, the outer shape of the connecting plate 52 is larger than the outer shape of the blower 51, the region outside the position corresponding to the outer shape of the blower 51 on the connection plate 52, and the outer shape of the blower 51 on the connection plate 52. It is preferable that a plurality of through holes 52a are provided in the region inside the position corresponding to the above. This makes it possible to connect the connection plate 52 to a plurality of suspension bolts 101 having different suspension pitch conditions.

As described above, the connection plate 52, which is a connection component in the first embodiment, has an outer shape larger than the upper surface 3c of the outer casing 3 which is a housing, is arranged in parallel with the upper surface 3c of the outer casing 3, and has a thickness. A flat plate having a plurality of through holes 52a penetrating in the parallel direction in the inner region of the upper surface 3c of the outer casing 3 and the outer region of the upper surface of the upper surface 3c of the outer casing 3 in the direction along the upper surface 3c of the outer casing 3. It is configured. The connection plate 52 is configured so that the plurality of suspension bolts 101 can be fixed to the connection plate 52 at the positions of the through holes 52a corresponding to the plurality of suspension bolts 101 in the direction along the upper surface 3c of the outer casing 3.

As described above, in the first embodiment, the blower device 50 is arranged below the plurality of suspension bolts 101, and the plurality of suspension bolts 101 are used by using the arbitrary through holes 52a corresponding to the positions of the plurality of suspension bolts 101. The connection plate 52 can be fixed to. Thereby, the blower device 50 can be installed by using a plurality of existing hanging bolts 101 fixed to the top wall 100 regardless of the size of the blower device 50 and more specifically regardless of the size of the blower 51. Is. That is, the blower device 50 can be suspended from the existing plurality of suspension bolts 101 without depending on the relationship between the suspension pitch of the plurality of suspension bolts 101 and the size of the blower 51.

As described above, the blower device 50 according to the first embodiment is fixed to a plurality of places on the upper surface 3c of the outer casing 3 of the blower 51 as an attachment portion for attaching the connection plate 52 to the blower 51, and is upward from the upper surface 3c. A first connecting bolt 41 extending to is provided. Further, the connection plate 52 provided with the plurality of through holes 52a is first connected by using an arbitrary through hole 52a that matches the position of the first connection bolt 41 in a state of being arranged above the blower 51. It is fixed to the bolt 41. Further, the connection plate 52 can be attached to the plurality of suspension bolts 101 by using the through holes 52a corresponding to the positions of the plurality of suspension bolts 101 in a state where the blower 50 is arranged at the installation position below the top wall 100. It is fixed.

As a result, the blower device 50 according to the first embodiment corresponds to the positions of a plurality of existing hanging bolts 101 fixed to the top wall 100 in a state where the blower device 50 is arranged at the installation position below the top wall 100. By providing the connection plate 52 with a plurality of through holes 52a, the blower 50 can be fixed to the existing suspension bolts 101 regardless of the positions of the existing suspension bolts 101 fixed to the top wall 100. Can be done. Further, the blower device 50 can be fixed to the existing plurality of suspension bolts 101 regardless of the size of the blower device 50 and regardless of the positions of the plurality of existing suspension bolts 101 fixed to the top wall 100. ..

Therefore, according to the first embodiment, it is possible to obtain a blower device 50 that can be installed by using a plurality of existing hanging bolts 101 fixed to the top wall 100 regardless of the size of the blower device 50. Then, according to the first embodiment, when the existing blower device is replaced with the blower device 50, the existing plurality of suspension bolts 101 can be diverted, so that the construction period for newly constructing the suspension bolt 101 and the new suspension bolt 101 are used. The cost of 101 can be reduced, and the effect of reducing waste such as existing hanging bolts 101 that cannot be used and is removed can be obtained.

Embodiment 2.
FIG. 5 is a side view showing the appearance of the blower according to the second embodiment. FIG. 6 is a top view showing the appearance of the blower according to the second embodiment. The parts of the blower device 50a according to the second embodiment and the blower device 50 according to the first embodiment are designated by the same reference numerals as those of the blower device 50, and detailed description thereof will be omitted.

The blower device 50a according to the second embodiment includes a blower 51 and a hanging metal fitting 60. The hanging metal fitting 60 is a connecting component for connecting a plurality of hanging bolts 101 and a blower 51. In the second embodiment, the blower device 50a includes four hanging metal fittings 60.

The hanging metal fitting 60 is attached to the first connection bolt 41 provided on the upper surface 3c of the outer casing 3 of the blower 51 in parallel with the upper surface 3c of the outer casing 3. The hanging metal fitting 60 is a flat bar having an elongated hole 60a penetrating in the thickness direction and extending along the longitudinal direction. In the second embodiment, the hanging metal fitting 60 has a flat bar shape.

The hanging metal fitting 60 is fixed to the blower 51 by being fixed to the first connection bolt 41 using a nut 42 and a washer (not shown). Specifically, in the hanging metal fitting 60, the first connection bolt 41 is passed through a through hole (not shown) for attachment to be attached to the first connection bolt 41, and the nut 42 and the washer are used to connect the first connection bolt 41 to the first connection bolt 41. It is fixed. That is, the hanging metal fitting 60 is screwed and fixed to the upper surface 3c of the outer casing 3 of the blower 51 at one point. The hanging metal fitting 60 can be fixed at an arbitrary rotation position about the first connecting bolt 41 by rotating the first connecting bolt 41 as an axis in the in-plane direction of the upper surface 3c of the outer casing 3 of the blower 51. be.

That is, the hanging metal fitting 60 is arranged parallel to the upper surface 3c of the outer casing 3, and is the inner region of the upper surface 3c of the outer casing 3 and the outer side of the upper surface 3c of the outer casing 3 in the direction along the upper surface 3c of the outer casing 3. The position of the elongated hole 60a can be changed in the area of.

The hanging metal fitting 60 is fixed to a plurality of hanging bolts 101 suspended from the top wall 100 by using a nut 42 and a washer (not shown). The hanging metal fitting 60 has a first connection bolt 41 as an axis so that a part of the elongated hole 60a corresponds to the position of the hanging bolt 101 when the blower device 50a is arranged at the installation position below the top wall 100. It is fixed in the rotation position. Then, in the hanging metal fitting 60, the hanging bolt 101 is passed through the elongated hole 60a in a state where the blower device 50a is arranged at the installation position below the top wall 100, and is fixed to the hanging bolt 101 by using the nut 42 and the washer. Has been done. That is, the blower 51 is fixed to the hanging bolt 101 via the first connection bolt 41 provided on the upper surface 3c of the outer casing 3 of the blower 51 and the hanging metal fitting 60.

As described above, the hanging metal fitting 60, which is a connecting component in the second embodiment, is arranged in parallel with the upper surface 3c of the outer casing 3 which is a housing, and is composed of a flat bar having an elongated hole 60a penetrating in the thickness direction. Has been done. Further, the hanging metal fitting 60 can change the position of the elongated hole 60a in the inner region of the upper surface 3c of the outer casing 3 and the outer region of the upper surface 3c of the outer casing 3 in the direction along the upper surface 3c of the outer casing 3. ing. Then, the hanging metal fitting 60 is fixed at the position of the elongated hole 60a corresponding to the hanging bolt 101 in the direction along the upper surface 3c of the outer casing 3.

As described above, the blower device 50a according to the second embodiment has a plurality of blowers 50a according to the positions of the plurality of suspension bolts 101 embedded in the top wall 100 in the in-plane direction of the upper surface 3c of the outer casing 3 of the blower 51. The hanging metal fitting 60 is fixed to the upper surface 3c of the outer casing 3 of the blower 51. Then, the hanging metal fitting 60 is fixed to the hanging metal fitting 101 by passing the hanging bolt 101 through the elongated hole 60a provided in the hanging metal fitting 60 and using a nut. As a result, the blower device 50a aligns the positions of the plurality of hanging metal fittings 60 with the positions of the existing plurality of hanging bolts 101 suspended from the ceiling wall 100, so that the plurality of existing suspension devices suspended from the ceiling wall 100 are suspended from the ceiling wall 100. It can be fixed to the hanging bolt 101 and installed in the space of the attic 103 of the building.

The hanging metal fitting 60 can be fixed at an arbitrary rotation position about the first connecting bolt 41, and the elongated hole 60a is fixed to the hanging bolt 101. Thereby, the blower device 50a can be installed by using a plurality of existing hanging bolts 101 fixed to the top wall 100 regardless of the size of the blower device 50a and more specifically regardless of the size of the blower 51. Is. That is, the blower device 50a can be suspended from the existing plurality of suspension bolts 101 without depending on the relationship between the suspension pitch of the plurality of suspension bolts 101 and the size of the blower 51.

Further, the blower device 50a according to the second embodiment can fix the hanging metal fitting 60 in accordance with the position of the hanging bolt 101. Therefore, the blower device 50a can make the connection parts for connecting the suspension bolt 101 and the blower 51 smaller than the blower device 50 according to the first embodiment, and the material cost of the connection parts can be reduced. It can be reduced and the weight of the entire blower device 50a can be reduced.

Embodiment 3.
FIG. 7 is a side view showing the appearance of the blower according to the third embodiment. The parts of the blower device 50b according to the third embodiment that are common to the blower device 50 according to the first embodiment are designated by the same reference numerals as those of the blower device 50, and detailed description thereof will be omitted.

The blower device 50b according to the third embodiment includes a blower 51a and a connection plate 52.

The blower 51a is fixed to the ceiling mount 70 provided on the side surface of the outer casing 3 and the ceiling mount 70 instead of the plurality of first connection bolts 41 provided on the upper surface 3c of the outer casing 3 of the blower 51. It is different from the blower 51 according to the first embodiment that the second connecting bolt 71 is provided. The ceiling mount bracket 70 and the second connection bolt 71 are attachment portions for attaching the connection plate 52 to the blower 51a.

The ceiling mount metal fitting 70 is provided on the first side surface 3d and the second side surface 3e, which are a pair of facing side surfaces, among the four side surfaces of the outer casing 3. In the third embodiment, on the first side surface 3d, the ceiling suspension fitting 70 is provided at two locations, a region on the third side surface 3f side and a region on the fourth side surface 3g side. Further, in the third embodiment, the ceiling suspension metal fittings 70 are provided at two locations on the second side surface 3e, the region on the third side surface 3f side and the region on the fourth side surface 3g side.

The second connection bolt 71 is fixed to the ceiling mount 70 with a nut 72 and a washer (not shown) so that the upper end thereof protrudes upward from the upper surface 3c of the outer casing 3 of the blower 51a. There is. The upper end of the second connection bolt 71 is fixed to the connection plate 52 in the same manner as the first connection bolt 41 of the blower device 50 according to the first embodiment. That is, the blower 51a is fixed to the connection plate 52 via the ceiling suspension metal fittings 70 provided on the four side surfaces of the outer casing 3 and the second connection bolt 71.

Further, in the blower device 50b, the connection plate 52 is fixed to a plurality of suspension bolts 101 embedded in the top wall 100 in the same manner as in the case of the blower device 50 according to the first embodiment.

Similar to the blower device 50 according to the first embodiment, the blower device 50b according to the third embodiment described above has a size of the blower device 50b by suspending the blower 51a to a plurality of suspension bolts 101 via a connection plate 52. Regardless of this, more specifically, regardless of the size of the blower 51a, it can be installed by using a plurality of existing hanging bolts 101 fixed to the top wall 100. That is, the blower device 50b can be suspended from the existing plurality of suspension bolts 101 without depending on the relationship between the suspension pitch of the plurality of suspension bolts 101 and the size of the blower 51a.

Further, in the blower device 50b, when the blower 51a is arranged at the installation position below the top wall 100, the positions of the plurality of hanging bolts 101 suspended from the top wall 100 and the positions of the plurality of ceiling hanging metal fittings 70 are arranged. If they match in the in-plane direction of the connection plate 52, it is possible to remove the connection plate 52 and connect the suspension bolt 101 to the ceiling suspension fitting 70 without going through the connection plate 52. That is, when the blower device 50b can connect the existing suspension bolt 101 to the ceiling suspension bracket 70 without using the connection plate 52, the blower device 50b suspends the existing suspension bolt 101 to the existing suspension bolt 101 with the connection plate 52 removed. It can be lowered.

Further, the blower device 50b can be configured by adding a connection plate 52 when the blower to be newly replaced is a blower 51a having a structure in which the ceiling suspension fitting 70 is provided on the side surface of the outer casing 3. Therefore, the blower device 50b can be applied to the blower 51a having a structure in which the ceiling suspension fitting 70 is provided on the side surface of the outer casing 3 without changing the structure of the blower 51a, and the ready-made type blower can be diverted. Is easy.

Embodiment 4.
FIG. 8 is a side view showing the appearance of the blower according to the fourth embodiment. The parts of the blower device 50c according to the fourth embodiment that are common to the blower device 50 according to the first embodiment are designated by the same reference numerals as those of the blower device 50, and detailed description thereof will be omitted.

The blower device 50c according to the fourth embodiment includes a blower 51a and a hanging metal fitting 60.

In the blower device 50c, the upper end of the second connection bolt 71 protrudes above the upper surface 3c of the outer casing 3 of the blower 51a by using a nut 72 and a washer (not shown) with respect to the ceiling suspension fitting 70. It is fixed in the state. The upper end of the second connection bolt 71 is fixed to the hanging metal fitting 60 by using a nut 42 and a washer (not shown). That is, the blower 51a is fixed to the hanging metal fitting 60 via the ceiling hanging metal fittings 70 provided on the four side surfaces of the outer casing 3 and the second connecting bolt 71.

Further, in the blower device 50c, the hanging metal fitting 60 is fixed to a plurality of hanging bolts 101 embedded in the top wall 100 in the same manner as in the case of the blower device 50a according to the second embodiment.

The hanging metal fitting 60 can be fixed at an arbitrary rotation position about the second connecting bolt 71 by rotating the hanging metal fitting 60 about the second connecting bolt 71 in the in-plane direction of the upper surface 3c of the outer casing 3 of the blower 51a. Yes, it is possible to match the position of the hanging bolt 101. Then, the elongated hole 60a is fixed to the suspension bolt 101.

In the blower device 50c according to the fourth embodiment described above, the hanging metal fittings 60 are heavenly aligned with the positions of the plurality of hanging bolts 101 embedded in the top wall 100 in the in-plane direction of the upper surface 3c of the outer casing 3 of the blower 51a. It is fixed to the hanging metal fitting 70. Then, the hanging metal fitting 60 is fixed to the hanging bolt 101 by passing the hanging bolt 101 through the elongated hole 60a provided in the hanging metal fitting 60 and using the nut 42. As a result, the blower 50c aligns the position of the hanging metal fitting 60 with the position of the existing hanging bolt 101 suspended from the ceiling wall 100, so that the blower device 50c becomes a plurality of existing hanging bolts 101 suspended from the ceiling wall 100. It can be fixed and installed in the space 103 behind the ceiling of the building.

The hanging metal fitting 60 can be fixed at an arbitrary rotation position about the second connecting bolt 71, and the elongated hole 60a is fixed to the hanging bolt 101. Thereby, the blower device 50c can be installed by using a plurality of existing hanging bolts 101 fixed to the top wall 100 regardless of the size of the blower device 50c and more specifically regardless of the size of the blower 51a. Is. That is, the blower device 50c can be suspended from the existing plurality of suspension bolts 101 without depending on the relationship between the suspension pitch of the plurality of suspension bolts 101 and the size of the blower 51a.

Further, the blower device 50c according to the fourth embodiment can fix the hanging metal fitting 60 in accordance with the position of the hanging bolt 101. Therefore, the blower device 50c can reduce the connection parts for connecting the suspension bolt 101 and the blower 51a as compared with the blower device 50b according to the third embodiment, and the material cost of the connection parts can be reduced. It can be reduced and the weight of the entire blower device 50c can be reduced.

Although the blower 51 having a built-in centrifugal blower 22 and the blower device provided with the blower 51a have been described in the above-described first to fourth embodiments, the ceiling surface of the first to fourth embodiments is described. It can be applied to all blowers installed via the suspension bolt 101 embedded in the ceiling.

The configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.

1 motor, 2 scroll casing, 3 outer casing, 3a outer casing suction port, 3b outer casing exhaust port, 3c upper surface, 3d first side surface, 3e second side surface, 3f third side surface, 3g fourth side surface, 3h lower surface, 4 Impeller, 5 suction port, 6 discharge port, 7 fan side intake port, 8 motor side intake port, 9,10 duct connection parts, 12,13 duct, 20 working fluid flow, 21 intake air passage, 22 centrifugal blower, 41 1st connection bolt, 42,72 nut, 50, 50a, 50b, 50c blower, 51, 51a blower, 52 connection plate, 52a through hole, 52b dedicated through hole, 60 hanging bracket, 60a long hole, 70 ceiling suspension Metal fittings, 71 2nd connection bolt, 100 top wall, 101 hanging bolt, 102 ceiling panel, 103 back ceiling, 104 room.

Claims (6)

It is a blower that is fixed to the upper surface of the ceiling and hung from multiple hanging bolts.
Connection parts fixed to the plurality of suspension bolts and
A housing having a mounting portion to which the connection component is fixed, an air suction port, and an air exhaust port and arranged below the connection component, and a ventilation unit housed inside the housing. With a blower equipped with
Equipped with
The connecting component can be fixed to the hanging bolt at a position corresponding to the hanging bolt in the inner region of the upper surface of the housing and the outer region of the upper surface of the housing in the direction along the upper surface of the housing. To be
A blower that features. The connecting component has an outer shape larger than the upper surface of the housing and is arranged in parallel with the upper surface of the housing, and a plurality of through holes penetrating in the thickness direction are formed in a direction along the upper surface of the housing. A flat plate having an inner region on the upper surface of the housing and an outer region on the upper surface of the housing.
The suspension bolt is fixed to the connection component at the position of the through hole corresponding to the suspension bolt in the direction along the upper surface of the housing.
The blower according to claim 1. The connecting component is a flat bar arranged parallel to the upper surface of the housing and having an elongated hole penetrating in the thickness direction, and is an internal region of the upper surface of the housing in a direction along the upper surface of the housing. And the position of the elongated hole can be changed to the outer region of the upper surface of the housing.
The suspension bolt is fixed to the connection component at the position of the elongated hole corresponding to the suspension bolt in the direction along the upper surface of the housing.
The blower according to claim 1. The mounting portion is a first connection bolt provided on the upper surface of the housing.
The blower according to any one of claims 1 to 3. The mounting portion is a ceiling mount provided on the side surface of the housing and a second connection bolt fixed to the ceiling mount.
The blower according to any one of claims 1 to 3. The blower is a centrifugal blower.
The blower according to any one of claims 1 to 3.

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