JP2002089924A - Ventilation equipment for duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide ceiling type ventilation equipment for duct for which maintenance work can be performed safely and easily. SOLUTION: A pair of bearing pieces 31a and 31b is installed to both side plates 30a and 30b which are positioned to face each other adjacently to a front plate 5 having an exhaust opening 8 in a state where the pieces 31a and 31b are protruded inward in a frame body 3 so that a fan unit 4 may be placed on and supported by the pieces 31a and 31b. In addition, a pair of placing pieces 33a and 33b which are placed on the bearing pieces 31a and 31b is installed to the fan unit 4 in a state where the fan unit 4 is positioned to a fixed position where the air blow opening 24 of the fan unit 4 is connected to the exhaust opening 8. Moreover, the space which is formed in the rear of the fan unit 4 when the unit 4 is positioned to the fixed position is formed as a set-back space 35 having a longitudinal length longer than the distances between the rear edges of the bearing pieces 31a and 31b and the front edges of the placing pieces 33a and 33b in the longitudinal direction so that the fan unit 4 may be attached to and detached from the bottom face of the frame body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation system for a duct which is installed in a ceiling space and ventilates a room through a duct pipe communicating with the outside.

[0002]

2. Description of the Related Art Conventionally, this type of ventilator has a configuration as shown in FIG. That is, in FIG.
Reference numeral 1 denotes a ventilation device main body, which is installed in a ceiling space by anchor bolts 102 and the like, and is connected to an intake-side duct pipe 1 which communicates with a room.
03 and an exhaust-side duct pipe 104 communicating with the outdoor are connected. The ventilation device 101 has a blower fan 105, a fan motor 106, a fan casing 10 therein.
The fan unit 108 is provided to exhaust the room air sucked from the intake-side duct pipe 103 to the outside through the exhaust-side duct pipe 104 for ventilation.

Here, the ceiling 1 directly below the ventilation device 101
09 is provided with an inspection port 110 and the ventilation device 1
01 is provided with a bottom cover 112 at the bottom opening 111, and during maintenance work of the ventilation device 101, the inspection opening 110 is opened, and the bottom cover 112 of the ventilation device 101 is removed to perform maintenance work of the fan unit 108. Was.

However, in this conventional ventilator 101, the fan unit 108 is directly attached to the top surface of the ventilator main body 101 by screwing. In addition, a worker who has risen to a higher position must remove the screws at a plurality of places while supporting the fan unit 108 with one hand, and when attaching the fan unit 108, Since the screws must be tightened, there is a high risk of dropping the fan unit 108, and if the fan unit 108 is dropped, an operator may be injured and the fan unit 108 itself may be injured. May be damaged, forcing workers to perform unstable and dangerous work. .

In order to solve such a problem, another conventional ventilating apparatus has a configuration shown in FIG. 11 (for example, Japanese Patent No. 2589842). That is, in FIG. 11, reference numeral 201 denotes a ventilator body, 202 denotes an intake duct, 2
03 is an exhaust duct, 204 is a fan unit,
The ventilator body 201 has a top surface and side surfaces opened, and the fan unit 20 fixed to the top plate 205 from the side surfaces.
4 allows the fan unit 204 to be easily attached and detached from the side by sliding the rail 4 on the rail 206, and fixing and releasing operations such as screwing of the fan unit 204, and attaching and detaching operations for positioning the fan unit 204 at a predetermined position. And were separated.

[0006]

However, in this conventional ventilating apparatus 201, since the intake duct 202 and the exhaust duct 203 are provided on the front and rear sides, the fan unit 20 is provided.
In order to slide the fan unit 4, rails 206 are provided inside the front and rear surfaces where the intake duct 202 and the exhaust duct 203 are provided, and the fan unit 204 is slid from the side to be detached. However, in this configuration, the air outlet 207 of the fan unit 204 and the exhaust duct 2
03 is easily formed between the main body side opening 208 and the main body side opening 208,
There is a drawback that the blowing air leaks from the gap to lower the blowing efficiency, and that the driving sound of the blowing fan leaks or a wind noise is generated, resulting in noise.

Further, in order to remove the fan unit 204 in the conventional ventilator 201, an operator pushes his / her upper body into the ceiling space from an inspection port provided on the ceiling beside the ventilator 201, and removes the side plate 209. After the fan unit 204 slides in the rear direction in the rail 206
The fan unit 204 must be moved over the full width of the fan unit 204 so as to be out of the range. When working on a narrow scaffold such as a stepladder, the fan unit 204 has a large moving distance, so it is easy to lose balance and it is very improper. It forced stable work.

Therefore, the present invention separates the fixing / unfixing work and the attaching / detaching operation of the fan unit, thereby facilitating the attaching / detaching operation of the fan unit, and facilitating the connection between the ventilation port of the fan unit and the exhaust port of the ventilation device body. It is an object of the present invention to provide a ventilation device for a duct, which makes it difficult to form a gap and can perform a stable operation without breaking a balance even on a narrow scaffold.

[0009]

The present invention pays attention to this point, and in order to solve the above-mentioned problems, in the present invention, in particular, a box-shaped frame having an opening on the bottom surface and a front plate of the frame are provided. A ventilator including an exhaust port provided and connected to a duct pipe, and a fan unit including a blower fan, a fan motor, and a fan casing, wherein the frame body is provided on both side plates facing each other adjacent to the front plate. A pair of support pieces are provided to protrude inward to support and support the fan unit, and the fan unit is mounted on the pair of support pieces in a state where an air blow port is located at a fixed position connected to the exhaust port. Providing a pair of mounting pieces to be placed, furthermore, the rear space at the fixed position of the fan unit is longer than the length connecting the rear edge of the support piece and the front edge of the mounting piece in the front-rear direction. Has a large front and rear length It was was set back space.

Thus, when removing the fan unit from the ventilation device body, it is not necessary to release the fixed state by screwing or the like while supporting the fan unit with one hand.
Even if the fixed state of the fan unit and the frame is released, the fan unit is supported by the support pieces so that it does not fall, and after releasing the fixed state, the fan unit is placed in the opposite direction to the exhaust port. Moving the fan unit to the vertical position by moving the fan unit to the vertical position by moving the rear edge of the support piece and the front edge of the mounting piece horizontally in the front-back direction so that the rear side of the fan unit enters the setback space in the rear direction, Since there is no overlapping portion between the support piece inside the frame and the vertical projection plane of the fan unit, the fan unit can be smoothly removed downward in the frame, so that stable work can be performed even on a narrow scaffold.

On the contrary, when the fan unit is mounted on the ventilator main body, the rear side of the fan unit is inserted into the setback space so that the mounting piece of the fan unit and the support piece inside the frame do not overlap. Lift the fan unit into the ventilator body, and then move the fan unit horizontally to a fixed position where the fan unit vent and the ventilator body exhaust port come into contact. Since the overlapping fan unit is placed on the support piece, the operator does not need to perform the unstable work of fixing the fan unit with the other hand while supporting the fan unit with one hand, and without worrying about the fan unit falling. The fan unit can be fixed to the frame using both hands, and the horizontal movement direction of the fan unit is the front direction toward the exhaust port. It is easy to connect the air outlet of the knit and the exhaust port of the main body of the ventilator without any gaps.There is no noise due to no air leakage, and the horizontal movement distance is short, so it is stable even on a narrow scaffold. Work,
Workability can be greatly improved, and the size of the entire ventilation device can be made compact.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, in the ventilator according to the first aspect, the support piece is provided with a slit having an opening on the rear plate side, and the fan unit is moved in a horizontal direction. When slid, the screw temporarily fixed to the mounting piece was made freely engageable with the slit.

When the fan unit is mounted, the screw temporarily fixed to the mounting piece of the fan unit is slid from the opening on the rear plate side of the slit so as to be inserted into the mounting piece. When removing the fan unit, the fan unit can be removed without having to remove it only by loosening the screws that have been tightened. This eliminates the need for complicated work such as removing the screws that were removed during the work and removing the screws to be installed from pockets, etc., further improving workability, and opening the slits on the rear plate side. Simply insert the screw from the section and slide it to connect the fan unit's air outlet to the frame's exhaust port. By eliminating the leakage of the blast air to prevent the generation of noise.

According to a third aspect of the present invention, in order to solve the above-mentioned problem, in the ventilating apparatus according to the second aspect, a substantially hemispherical projection or hole is provided on the support piece, and the projection piece is provided on the mounting piece. A hole corresponding to the hole or a substantially hemispherical protrusion corresponding to the hole was provided.

Thus, when the mounting piece and the support piece are fixed by tightening the screw, the hole is displaced on the surface of the projection so that the hole fits into the substantially hemispherical projection. Since the parts are fitted and the fan unit is fixed at a predetermined appropriate position, the air outlet of the fan unit and the exhaust port of the ventilator body are securely connected without gaps, just tighten the screw It can be in a reliable connection state,
Noise is not generated by eliminating the leakage of the blast air, and workability is further improved.

[0016]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. Reference numeral 1 denotes a duct ventilation device main body, which is a rectangular box-shaped frame 3 having an opening 2 on the bottom surface.
And a fan unit 4 removably provided inside the frame 3 and a bottom lid 5 for closing the opening 2, and exhaust air opened to the front plate 6 of the frame 3 and communicated outdoors. An exhaust port 8 connected to a side duct pipe 7, and an intake port 11 connected to an intake side duct pipe 10 opened to a rear plate 9 facing the front plate 6 and communicating with the room. Inhaling and discharging to the outside to ventilate the building.

The ventilator 1 is installed in the ceiling space by anchor bolts 13 via suspension fittings 12 provided at the four outer corners of the frame 3, and a ceiling 14 directly below the ventilator 1 has an inspection port 15. Is provided so that maintenance work of the ventilation device 1 can be performed.

The fan unit 4 includes a blower fan 16.
, A fan motor 17, and a fan casing 22 including a top plate 18, a scroll 19, and a bottom plate 21 provided with a bell mouth 20. The fan motor 22 is mounted on the bottom plate 21 via an arch-shaped motor support bracket 23. A gasket 17 is attached, and a gasket 25 is provided around the entire periphery of the blower port 24 of the fan unit 4 so as not to form a gap when the fan unit 4 comes into contact with the exhaust port 8. The handle 2 also serves as a handle of the unit 4.
6 is provided to facilitate handling of the heavy fan unit 4.

Reference numeral 27 denotes a filter provided between the fan unit 4 and the intake port 11, which is provided on the filter guide 28 inside the frame 3 so as to be detachable from the bottom side through the bottom cover 5. Reference numeral 29 denotes an electrical unit for controlling the driving of the fan motor 17 and is provided outside one of the side plates 30a and 30b of the frame 3 adjacent to the front plate 6 and the rear plate 9.

Reference numerals 31a, 31b, 32a and 32b denote bearing pieces provided inside the side plates 30a and 30b adjacent to the front plate 6 and the rear plate 9, respectively.
The fan unit 4 is provided on the front plate 6 side and the rear plate 9 side as a pair, and the fan unit 4 is placed on and supported by the support pieces 31a, 31b, 32a, 32b.

The bearing pieces 31a and 32a and 31b and 3
2b is formed in one L-shaped fitting, and each L-shaped fitting is attached to the side plates 30a, 30b by spot welding, and the respective support pieces 31a, 31b, 32
This is more advantageous in terms of manufacturing cost than spot welding a and 32b one by one.

Reference numerals 33a, 33b, 34a, and 34b denote mounting pieces provided at four corners of the bottom plate 21 of the fan unit 4 so as to protrude toward the side plates 30a, 30b. Are mounted on the bearing pieces 31a, 31b, 32a, 32b at the fixed positions.

Reference numeral 35 denotes a set-back space in which there is nothing obstructing movement of the fan unit 4, and when the fan unit 4 is in a fixed state, the support pieces 31a, 31
b, 32a, 32b and trailing edges 33a, 33
b, 34a, and 34b are spaces having front-rear lengths L2 longer than the maximum length L1 connecting the front edges of the fan units 4 with the front edges of the fan units 4 from the fixed position. The bearing piece 31 so as to fit in 35
a, 31b, 32a, 32b and the trailing edge of the mounting piece 33
a, 33b, 34a, and 34b are horizontally moved by a maximum length of a length L1, which is tied in the front-rear direction with the front edge,
The support pieces 31a, 31b, 32a, 32b inside the frame 3 and the mounting pieces 33a, 33b, 34a of the fan unit 4 are provided.
Since there is no overlapping portion of the vertical projection plane 34b, the fan unit 4 is mounted in the limited space within the frame 3 in the bearing piece 31.
a, 31b, 32a, 32b.

The pair of support pieces 31a and 31b are provided on the rear plate 9 side with respect to the center of gravity (fan motor 17) of the fan unit 4, and the other support pieces 32a and 32b are provided on the front plate 6 with respect to the center of gravity of the fan unit 4. Side, so that the fan unit 4 can be stably mounted even if the longitudinal length of each support piece is shortened, and therefore, the horizontal movement distance required for attaching and detaching the fan unit 4 (The trailing edge of the bearing pieces 31a, 31b, 32a, 32b and the mounting piece 3 described above.
3a, 33b, 34a, and 34b, respectively, can be shortened (the maximum length of the length L1 tied in the front-rear direction). Therefore, the size of the ventilator main body 1 can be made compact, and a stable operation that does not easily lose balance even on a narrow scaffold can be performed.

The bearing pieces 31a, 31b, 32a, 32
Each of b has a slit portion 36 having an opening on the rear plate 9 side. From the opening end of the slit portion 36, the mounting pieces 33a, 33b, 34a, 3
The screw 37 temporarily fixed to the fan unit 4b is inserted therein, so that it serves as a guide when the fan unit 4 is horizontally moved, and it is not necessary to pay attention to the handling of the screw 37 when attaching or detaching the fan unit 4.

Reference numeral 38 denotes a substantially hemispherical projection provided only on the bearing pieces 31a and 31b, which is generally called a dowel. Reference numeral 39 denotes a mounting piece 33a and 33b of the bottom plate 21 of the fan unit 4. A hole provided at a position corresponding to the substantially hemispherical projection 38 is generally called a dowel hole. The protruding portion 38 and the hole 39 are provided in the fan unit 4.
The air outlet 24 is provided corresponding to a regular fixed position where the air outlet 24 is in contact with the exhaust port 8 of the frame 3 without a gap.

The holes 39 may be provided on the support pieces 31a and 31b, and the substantially hemispherical projections 38 may be provided on the mounting pieces 33a and 33b at positions corresponding to the holes 39. What is necessary is that the part 38 and the hole 39 are set as a set.

Next, when removing the fan unit 4, the worker first checks the inspection port 15 of the ceiling 14.
Is released, and the bottom cover 5 of the ventilation device main body 1 is removed. The mounting pieces 33a, 33b, 34a, 3 of the fan unit 4
4b and bearing pieces 31a, 31b, 32a, 32b of the frame 3
Is loosened to the temporarily fixed state.

At this time, even if the screw 37 is loosened, the fan unit 4 is mounted on the supporting pieces 31a, 31b, 32a, 32b, so that it does not fall down and the operator supports the fan unit 4. It is not necessary to loosen the screw 37 while the screw 37 is temporarily fixed to the fan unit 4 and can be attached and detached. Therefore, complicated work such as removing the screw 37 one by one can be omitted, and workability can be improved. Is good.

Next, the handle portion 26 provided on the motor support bracket 23 of the fan unit 4 is gripped with both hands, and the fan unit 4 is lightly lifted. A predetermined distance toward the plate 9 (maximum length of the length connecting the rear edges of the support pieces 31a, 31b, 32a, 32b and the front edges of the mounting pieces 33a, 33b, 34a, 34b in the front-rear direction). And move the screw 37 in the temporarily fixed state to the slit 36
Remove from

When the fan unit 4 is moved horizontally by a predetermined distance to the elevating position, the mounting pieces 33a, 33b, 34a, 34b of the fan unit 4 and the supporting pieces 31a, 31b, 32a inside the frame 3 are moved. , 32b do not overlap, so that the fan unit 4 can be lowered.

The distance for moving the fan unit 4 is the length L1 connecting the rear edges of the support pieces 31a, 31b, 32a, 32b and the front edges of the mounting pieces 33a, 33b, 34a, 34b in the front-rear direction. The maximum length of
It is only necessary to move the support pieces 31a, 31b, 32a, 32b by the front and rear lengths, and a stable work can be performed without breaking the balance even on a narrow scaffold.

Next, when the fan unit 4 is mounted, the operator first operates the fan unit 4.
Of the fan unit 4 in which the mounting pieces 33a, 33b, 34a, 34b and the support pieces 31a, 31b, 32a, 32b in the frame 3 do not overlap with each other. Is lifted until the mounting pieces 33a, 33b, 34a, 34b of the fan unit 4 are on the support pieces 31a, 31b, 32a, 32b, and then the mounting pieces 33a, 33b,
The screws 37 temporarily fixed to 34a, 34b are attached to the support pieces 31a,
31b, 32a, 32b, the fan unit 4 is inserted through the opening end of the slit portion 36, horizontally moved by a predetermined distance toward the front plate 6 and brought to a fixed position, and the bearing pieces 31a, 31
b, 32a, 32b.

At this time, the fan unit 4 is supported
a, 31b, 32a, 32b, so that the fan unit 4 can be safely operated without falling down even if the operator does not support it.
Is a direction in which the air outlet 24 of the fan unit 4 and the air outlet 8 of the frame 3 approach each other, so that the air outlet 24 and the air outlet 8 can be easily brought into contact with each other and a gap is hardly generated. In addition, the moving distance of the fan unit 4 may be substantially the same as the front and rear lengths of the support pieces 31a, 31b, 32a, and 32b, and there is a setback space 35 for the moving distance on the rear plate 9 side of the fan unit 4. Therefore, the size of the ventilator body 1 can be made compact and stable work can be performed on a narrow scaffold without losing balance.

After the fan unit 4 is placed at the fixed position, the fan unit 4 can be fixed by tightening the screw 37 with both hands free, and the screw 37 is temporarily fixed to the fan unit 4. Therefore, complicated work such as taking out a screw to be attached from a pocket or the like can be omitted, and workability is good.

At this time, the substantially hemispherical projections 3 provided on the bearing pieces 31a and 31b are tightened by tightening the screws 37.
8, the holes 39 provided on the mounting pieces 33a and 33b of the fan unit 4 are displaced so as to be pushed into the exhaust port 8 side on the surface of the projection 38 so that the projections 38 and the hole are finally inserted. 39 is fitted to ensure that the fan unit 4 is fixed at a predetermined appropriate position.

Thus, the air outlet 2 of the fan unit 4
4 and the exhaust port 8 of the frame 3 are properly connected to each other, so that no gap is generated between the blow port 24 and the exhaust port 8 no matter who performs the mounting work, and leakage of the blow air can be easily eliminated. Noise can be prevented.

In this embodiment, another bearing piece 32 is used.
a and 32b are provided as a pair. However, the present invention is not limited to this. For example, as in another embodiment shown in FIG.
It is also possible to provide 0a, 40b on one side plate 6, and in this case, the front and rear lengths of the support pieces 40a, 40b may be designed within the moving distance of the fan unit 4. Further, the other support pieces 40a and 40b can be designed as one instead of a pair.

FIG. 9 is a view showing still another embodiment. Explaining only the parts different from the previous embodiment, the ventilator body 1 is not directly suspended but fixed directly to the ceiling 14, and the air intake is carried out through the opening 2 on the bottom surface of the frame 3 from the room side with the ceiling 14 interposed therebetween. Makeup panel 41 that constitutes the mouth
Is provided. Then, the room air is sucked through an intake slit 42 opened in the decorative panel 41, and the fan unit 4 exhausts the air outside through the exhaust-side duct pipe 7 to perform ventilation.

In the still another embodiment, the fan unit 4 can be safely and easily attached and detached by removing the decorative panel 41 during maintenance work of the fan unit 4 as in the previous embodiment. No noise is generated due to the leakage of the blown air without a gap between the blowout port 24 of the frame 4 and the exhaust port 8 of the frame 3, and the size of the entire ventilator can be made compact.

[0041]

As described above, according to the present invention, even when the fixed state between the fan unit and the frame is released when the fan unit is removed, the fan unit is still mounted on the support piece. In addition, when mounting the fan unit, the fixing operation can be performed after the fan unit is placed on the support piece, so it is not necessary to fix or release the fixing while the operator supports the fan unit, and the fan unit suddenly falls. This prevents damage to the fan unit and allows the operator to work directly under the frame, eliminating the need for the operator to dig into the ceiling space and work on the upper body, lowering the work position and increasing safety. Since the horizontal movement distance required to attach and detach the unit is short, stable work can be performed even on a narrow scaffold,
Workability has been greatly improved, and since the direction of movement is such that the exhaust port of the frame and the air port of the fan unit approach each other during installation, airtightness between the exhaust port and the air port can be easily ensured, and leakage of blast air can be prevented. Therefore, the generation of noise can be prevented, and the size of the entire ventilation device can be made compact.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a duct ventilation device according to an embodiment of the present invention.

FIG. 2 is a bottom view of the same embodiment at a fan unit fixing position.

FIG. 3 is a bottom view of the same embodiment at a fan unit elevating position.

FIG. 4 is a longitudinal sectional view of the A-A ′ plane of the same embodiment.

FIG. 5 is a vertical cross-sectional view of the B-B ′ plane of the same embodiment.

FIG. 6 is an explanatory diagram of attachment of the same embodiment.

FIG. 7 is an explanatory view of a protrusion and a hole according to the same embodiment.

FIG. 8 is a bottom view at a fan unit elevating position according to another embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of still another embodiment of the present invention.

FIG. 10 is a longitudinal sectional view of a conventional ventilation device.

FIG. 11 is an exploded perspective view of another conventional ventilation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ventilation device main body for duct 2 Opening 3 Frame 4 Fan unit 6 Front plate 7 Exhaust side duct piping 8 Exhaust port 9 Rear plate 10 Intake side duct piping 11 Intake port 16 Blow fan 17 Fan motor 22 Fan casing 24 Blow port 30a Side plate 30b Side plate 31a Bearing piece 31b Bearing piece 32a Bearing piece 32b Bearing piece 33a Mounting piece 33b Mounting piece 34a Mounting piece 34b Mounting piece 35 Setback space 36 Slit portion 37 Screw 38 Projecting portion 39 Hole

Claims (3)

[Claims] 1. A fan unit comprising a box-shaped frame having an opening on a bottom surface, an exhaust port provided on a front plate of the frame and connected to a duct pipe, a blower fan, a fan motor, and a fan casing. And a pair of support pieces for projecting into the frame body and mounting and supporting the fan unit on opposite side plates adjacent to the front plate, and the fan unit includes: A pair of mounting pieces mounted on the pair of support pieces are provided in a state where the blower port is located at a fixed position connected to the exhaust port, and a rear space at the fixed position of the fan unit is further provided. And a setback space having a front-rear length greater than a length connecting the rear edge of the bearing piece and the front edge of the mounting piece in the front-rear direction. 2. The support piece is provided with a slit having an opening on the rear plate side, and when the fan unit is slid in a horizontal direction, a screw temporarily fixed to the mounting piece engages with the slit. 2. The ventilation device for a duct according to claim 1, wherein the ventilation device is free. 3. The support piece is provided with a substantially hemispherical protrusion or hole, and the mounting piece is provided with a hole corresponding to the protrusion or a substantially hemispherical protrusion corresponding to the hole. The ventilation device for a duct according to claim 2, characterized in that: