JP5743956B2 - Decorative panel and duct ventilation fan - Google Patents

Description

  The present invention relates to a decorative panel and a ventilation fan for a duct.

Conventionally, a multi-chamber duct ventilation fan that can exhaust a large number of room airs at the same time is exhausted simultaneously from a decorative panel for exhausting air from a room mounted on the main body and from a room other than the room where the main body is installed (other rooms) And an auxiliary suction decorative panel.
Such a multi-chamber duct ventilation fan has a larger opening area for ventilation of the main body decorative panel than the auxiliary suction decorative panel, and the exhaust fan installed in the main body is closer to the main body decorative panel. The suction power is strong. For this reason, the amount of air sucked from the main body decorative panel is larger than the amount of air sucked from the auxiliary suction decorative panel, and the amount of air sucked from the auxiliary suction decorative panel is extremely small or hardly sucked. is there.

  Therefore, in order to suppress the amount of suction from the main body decorative panel, an air volume adjusting plate is installed on the main body decorative panel of the duct ventilation fan for multiple rooms. The air volume adjusting plate is held so as to be pressed into a holding pin formed on the decorative panel, adjusts the area of the ventilation opening of the main body decorative panel, and secures the amount of air sucked from the auxiliary suction decorative panel. An invention is disclosed (for example, see Patent Document 1).

JP-A-8-114344 (page 4-5, FIG. 1)

In the invention disclosed in Patent Document 1, a bendable portion is provided on a part of the air flow adjusting plate, and the bendable portion is bent to adjust the area of the ventilation opening.
However, since the air volume adjusting plate is mounted on the ventilation opening of the main body decorative panel, which is originally a ventilation path, it cannot be sufficiently held by the holding pin, and the air volume adjustment is performed from a position far from the holding pin of the main body decorative panel. In some cases, the “floating” of the board may occur.
For this reason, there is a problem that noise is generated due to “flapping” of the air volume adjusting plate, and a problem that an appropriate exhaust air volume cannot be secured from another room (the room where the auxiliary suction decorative panel is installed). Moreover, since the fan is rotating in the vicinity of the air volume adjusting plate, there is a problem that the air flow adjusting plate may be damaged or the duct ventilation fan may be broken.

And, as a means for suppressing the “floating” of the air volume adjusting plate, measures such as fixing with tape have been taken.
However, fixing with tape increases the cost, and for air volume adjustment, repeated tape removal may reduce the adhesiveness of the tape and make it impossible to fix the air volume adjustment plate. It was missing.

  The present invention has been made in view of the above, and provides a decorative panel having an air volume adjusting plate fixing mechanism capable of suppressing “floating” of an air volume adjusting plate without using a tape, and such a panel. It aims at providing the ventilation fan for ducts which has a decorative panel.

  The decorative panel according to the present invention is detachably attached to the body so as to cover the opening of the body forming the duct ventilation fan, and covers a pair of substantially rectangular ventilation openings formed in the central portion. A decorative panel comprising an air volume adjusting plate, wherein a spring holding piece is provided at an edge of the ventilation opening, and the spring holding piece is attached to a predetermined grating among a plurality of gratings installed in the ventilation opening. Parallel ribs are provided, adjustment plate engagement protrusions are formed near the corners of the ventilation openings on the surface on which the spring holding pieces are provided, and the air volume adjustment plate is a substantially concave plate material, An adjustment plate overlapping portion formed so as to sandwich the adjustment plate ventilation portion, an adjustment plate main body connected to the adjustment plate overlapping portion, and a plurality of adjustment plate engaging holes formed in a row at corners of the adjustment plate main body And the pair of air volume adjusting plates are installed in the ventilation opening. Part of the adjusting plate overlapping portions of the pair of air volume adjusting plates overlap each other, and a part of the overlapping range is between the spring holding piece and the rib. Floating is suppressed by a spring holding piece flange formed on the piece and a rib flange formed on the rib, and the adjustment plate engagement protrusion enters into one of the plurality of adjustment plate engagement holes. And

  According to the present invention, the air holding plate can be prevented from floating by the spring holding piece flange and the rib flange, so that the cost of the tape can be reduced by eliminating the need for the tape parts used for fixing. It becomes. In addition, since the airflow adjustment plate can be kept floating without being affected by multiple removals, the airflow adjustment plate can be prevented from being damaged even after repeated removal of the airflow adjustment plate. ”Can be suppressed. Furthermore, if it is installed in a ventilation fan for a multi-room duct, the air volume adjusting plate is securely held, so that the intake air volume from other rooms can be kept properly.

The perspective view which shows the external appearance seen from the main body attachment surface side in the state which does not have the air volume adjusting plate explaining the decorative panel concerning Embodiment 1 of this invention. The perspective view which shows the external appearance of the air volume adjustment board of the decorative panel shown in FIG. The perspective view which shows the external appearance which looked at the state (state with the narrowest opening area for ventilation | gas_flowing) which attached the air volume adjustment board to the decorative panel shown in FIG. 1 from the main body attachment surface side. The perspective view which shows the external appearance which looked at the state (state with the widest opening area for ventilation | gas_flowing) which attached the air volume adjustment board to the decorative panel shown in FIG. 1 from the main body attachment surface side. The perspective view which expands and shows the relationship between the rib holding | maintenance flange formed in the rib flange formed on the grating | lattice of the decorative panel shown in FIG. Sectional drawing which shows schematic structure of the ventilation fan for duct concerning Embodiment 2 of this invention.

  Hereinafter, first, a decorative panel will be described in detail as a first embodiment based on the drawings, and then a duct ventilation fan will be described in detail as a second embodiment based on the drawings. Note that, in each drawing, the same reference numerals are given to the same or corresponding parts, and a part of the description is omitted. In addition, the description of the subscripts “a, b, c, d” attached to the reference numerals may be omitted for a plurality of parts having the same shape. Furthermore, the present invention is not limited to the embodiments described in the first and second embodiments.

[Embodiment 1: Cosmetic panel]
1 to 5 illustrate a decorative panel according to Embodiment 1 of the present invention, and FIG. 1 is a perspective view showing an external appearance of the decorative panel as viewed from the main body mounting surface side without an air volume adjusting plate. FIG. 2 is a perspective view showing the external appearance of the air volume adjusting plate, and FIG. 3 is a perspective view showing the external appearance of the state where the opening area for ventilation is the narrowest from the side of the main body mounting surface with two air volume adjusting plates attached. 4 is a perspective view showing the appearance of the state in which the ventilation opening area is the widest by sliding the two air volume adjusting plates as viewed from the body mounting surface side, and FIG. 5 is formed on the ribs on the lattice of the decorative panel. It is a perspective view which expands and shows the relationship between the spring holding piece flange formed in the rib flange and the spring holding piece, and the air volume adjusting plate.

(Decorative panel)
1 to 5, the decorative panel 31 is a substantially rectangular plate, and is attached to the fan casing 22 by a torsion spring 42 so as to cover the flange 18 of the duct ventilation fan 100 and close the opening of the body 21. The suspension is supported so as to be possible (see FIG. 6, which will be described in detail separately).

(Torsion spring)
The torsion springs 42a and 42b (hereinafter, the description of the subscripts “a and b” are omitted) are two latching arm portions 44 that are opened in a V shape from both ends of the coil portion 43 and the coil portion 43, respectively. A pair of locking arm portions 44 facing each other with the coil portion 43 interposed therebetween function as the torsion spring 42.
The torsion spring 42 is locked to a locking portion 26 formed on the fan casing 22 of the duct ventilation fan 100, whereby a tensile force for biasing the decorative panel 31 in the direction of the fan casing 22 can be applied. . Therefore, the decorative panel 31 can be attached to ceiling materials having various thicknesses by the pulling force of the torsion spring 42. Further, since the suspension support is structured so that the locking arm portion 44 is locked to the locking portion 26, the decorative panel 31 can be easily attached and detached (see FIG. 6, which will be described in detail separately).

(Spring holding piece)
Spring holding pieces 50a, 50b, 50c, and 50d project from the main body attachment surface of the decorative panel 31 (upper surface when installed on the ceiling) in parallel with the outer edge. Since the spring holding pieces 50a, 50b, 50c, and 50d all have the same shape, in the following description of the common content, the description of the suffix “a, b, c, d” is omitted.
The spring holding piece 50 functions as a mounting portion for attaching the torsion spring 42, and is an outer holding piece 51 and an inner holding piece 53 that are arranged in parallel to each other, and each of which penetrates the fixing pin 45. Holes 52 and 54 are formed, and a spring holding piece flange 55 is formed inside the inner holding piece 53.
Therefore, the torsion spring 42 is attached to the decorative panel 31 by disposing the coil portion 43 of the torsion spring 42 in the gap between the outer holding piece 51 and the inner holding piece 53 and inserting the fixing pin 45 into the coil portion 43. Yes.

  1, 3 and 4, torsion springs 42a and 42b are attached to spring holding pieces 50a and 50b by fixing pins 45a and 45b, but instead of spring holding pieces 50a and 50b, spring holding pieces 50c, By changing the attachment position to 50d, the attachment direction of the decorative panel 31 can be rotated by 90 degrees.

(Adjustment plate engagement protrusion)
In addition, a ventilation opening 32 that allows air to pass therethrough is formed in the center of the decorative panel 31, and the ventilation opening 32 has a rectangular shape, and a plurality of lattices 46 are formed in parallel to each other. It is secured. Adjustment plate engaging protrusions 33a, 33b, 34a, 34b are provided upright at four corners around the ventilation opening 32 of the decorative panel 31.

(rib)
Furthermore, the main body mounting surface (the upper surface when installed on the ceiling) of the predetermined grid 46 of the decorative panel 31 is parallel to the spring holding pieces 50c and 50d (more precisely, the inner holding pieces 53c and 53c). Ribs 56c and 56d are provided. At this time, the distance between the spring holding piece 50c and the rib 56c is equal to the distance between the spring holding piece 50d and the rib 56d, and is slightly larger than the width of the adjusting plate overlapping portion 62 of the air volume adjusting plate 60 described later. .
Further, a rib flange 57c is formed on the rib 56c so as to face the spring holding piece flange 55c formed on the spring holding piece 50c, and a rib 56d is faced on the spring holding piece flange 55d formed on the spring holding piece 50d. A rib flange 57d is formed on the surface.

(Air volume adjustment plate)
In FIG. 2, on the main body mounting surface (upper surface when installed on the ceiling) of the decorative panel 31, two sheets of, for example, resin air volume control plates having the same shape for adjusting the area of the ventilation opening 32 are provided. 60a and 60b are arranged. Since the air volume adjusting plates 60a and 60b have the same shape, the illustration of the air volume adjusting plate 60b is omitted, and in the description of the common contents, description of the subscripts “a, b” is omitted.
The air volume adjusting plate 60 is a substantially concave plate material, a pair of adjusting plate overlapping portions 62 positioned on both sides of the adjusting plate ventilation portion 61, an adjusting plate main body portion 63 continuous to the adjusting plate overlapping portion 62, An adjustment plate engaging hole 64 formed at a corner of the adjustment plate main body 63 opposite to the adjustment plate overlapping portion 62 and an adjustment plate formed at an edge of the adjustment plate main body 63 facing the adjustment plate ventilation portion 61. And an escape portion 66. A plurality of (for example, four) adjustment plate engagement holes 64 and 65 are formed in a row at predetermined intervals.

(Arrangement of air volume adjustment plate)
In FIG. 3, the air volume adjusting plate 60a is inserted into the adjusting plate engaging holes 64a, 65a located farthest from the adjusting plate ventilation portion 61a, and the adjusting plate engaging protrusions 33a, 34a of the decorative panel 31 are inserted, and the air volume adjusting plate 60b is the adjusting plate. The adjustment plate engagement protrusions 33b and 34b of the decorative panel 31 are inserted into the adjustment plate engagement holes 64b and 65b farthest from the ventilation portion 61b, and the air flow adjustment and the relatively wide range of the adjustment plate overlapping portion 62a of the air flow adjustment plate 60a. The adjustment plate overlap portion 62b of the plate 60b overlaps a relatively wide range. At this time, the overlapping range penetrates between the inner holding piece 53c and the rib 56c, and between the inner holding piece 53d and the rib 56d, and the rib flange 57c and the spring holding piece flange 55c and The flange 57d and the spring holding piece flange 55d are restrained from being lifted up.

In FIG. 4, the adjustment plate engagement protrusions 33a and 34a of the decorative panel 31 are inserted into the adjustment plate engagement holes 64a and 65a that are closest to the adjustment plate ventilation portion 61a, and the air flow adjustment plate 60b is the adjustment plate. The adjustment plate engagement protrusions 33b and 34b of the decorative panel 31 are inserted into the adjustment plate engagement holes 64b and 65b closest to the ventilation portion 61b, and the adjustment plate overlapping portion 62a of the air volume adjustment plate 60a is compared with FIG. And a relatively wide range of the adjustment plate overlapping portion 62b of the air volume adjustment plate 60b overlap. At this time, the overlapping range penetrates between the inner holding piece 53c and the rib 56c, and between the inner holding piece 53d and the rib 56d, and the rib flange 57c and the spring holding piece flange 55c and The flange 57d and the spring holding piece flange 55d are restrained from being lifted up.
Since the air volume adjusting plates 60a and 60b are formed with adjusting plate escape portions 66a and 66b, the air volume adjusting plates 60a and 60b do not interfere with the spring holding pieces 50a and 50b.

  Therefore, the adjustment plate engagement protrusions 33 and 34 of the decorative panel 31 are inserted and the positions of the adjustment plate engagement holes 64 and 65 are selected to adjust the overlap amount of the adjustment plate overlap portion 62a and the adjustment plate overlap portion 62b. Therefore, the substantial area of the ventilation opening 32 formed by the adjustment plate ventilation portion 61a and the adjustment plate ventilation portion 61b can be changed. Therefore, the suction air volume from the decorative panel 31 can be easily changed by a simple operation.

As described above, the air volume adjusting plates 60a and 60b can be removed from the adjusting plate engaging projections 33 and 34 provided at the four corners of the ventilation opening 32 without using a tool or the like. It can be easily detached. Moreover, since the attachment is also made of the two air flow rate adjusting plates 60a and 60b having the same shape, an incorrect attachment is avoided.
Furthermore, since the air volume adjusting plates 60a and 60b are, for example, black, even when the air volume adjusting plates 60a and 60b are attached, the air volume adjusting plates 60a and 60b are not conspicuous when viewed from the room, and the design is not impaired.

  The air volume adjusting plates 60a and 60b (adjusting plate ventilation portions 61a and 61b) are shaped so as to avoid the spring holding pieces 50a and 50b formed on the decorative panel 31 and the opening located immediately below the fan having the most airflow. The two air volume adjusting plates 60a and 60b partially overlap each other between the spring holding pieces 50c and the ribs 56c provided at a pair of two opposing positions, and between the spring holding pieces 50d and the ribs 56d. ing.

As described above, the air volume adjusting plates 60a and 60b are overlapped with the adjusting plate overlapping portions 62a and 62b, so that the rigidity is increased and the air volume adjusting plates 60a and 60b are not easily lifted.
Further, the overlapping range of the adjusting plate overlapping portion 62a and the adjusting plate overlapping portion 62b sinks below the rib flange 57c and the spring holding piece flange 55c and below the rib flange 57d and the spring holding piece flange 55d, respectively. Therefore, even when the air volume adjusting plates 60a and 60b are lifted, the lift is suppressed by contacting the rib flange 57 and the spring holding piece flange 55. Therefore, fixing with the tape used conventionally becomes unnecessary, and cost can be suppressed by reducing the number of parts.

  Further, as compared with fixing with tape, the air volume adjusting plates 60a and 60b can be held without being influenced by the removal of the air volume adjusting plates 60a and 60b a plurality of times. The generation of noise is suppressed, and the air volume adjusting plates 60a and 60b are securely held, so that the intake air volume can be kept appropriate and the quality can be improved.

[Embodiment 2: Ventilation fan for duct]
FIG. 6: is sectional drawing which shows schematic structure of the ventilation fan for ducts concerning Embodiment 2 of this invention.
In FIG. 6, a duct ventilation fan 100 includes a multi-blade blower 15 that is a ventilation drive body that distributes air to be ventilated, and a fan casing 22 that houses the multi-blade blower 15 and is intended to form an air passage. Have. The multi-blade blower 15 includes a motor 16 and a fan 17 that is plugged into a drive shaft of the motor 16.

The duct ventilation fan 100 includes a body (main body) 21 and duct connection frames 23a and 23b. In particular, the multi-chamber duct ventilation fan 100 has two duct connection frames, that is, a duct connection frame 23a for suctioning other rooms and a duct connection frame 23b for exhaust.
The other-chamber suction duct 13a is a pipe and communicates with another chamber (not shown), and the duct 13a serves as a ventilation path for air sucked from the sub-suction decorative panel 70.
The duct connection frames 23a and 23b are provided on the side portions of the body 21 and extend from the side surface of the body 21 in a right angle direction, and extend to a position where the discharge port 12 communicates with the duct 13a and the suction port 14 communicates with the duct 13b. It has a stepped configuration.

  The outer shapes of the duct connection frames 23a and 23b are formed in steps having different diameters. This is because the ducts 13a and 13b to be piped can be connected to the duct connection frames 23a and 23b even when the diameters are different, and the taping workability into the gap between the ducts 13a and 13b and the duct connection frames 23a and 23b is taken into consideration. It is.

  In the duct connection frames 23a and 23b, shutters 24a and 24b that are opened and closed by electric power or wind pressure are provided, respectively. The shutters 24a and 24b are opened by wind pressure when the duct ventilation fan 100 is in operation, and the duct connection frames 23a and 23b are opened, and when stopped, the duct connection frames 23a and 23b are closed by the dead weight of the shutters 24a and 24b.

  As described above, by providing the shutters 24a and 24b, it is possible to prevent the outside air from the outside and the inflow of air from other rooms when the duct ventilation fan 100 is stopped. Note that the exhaust duct 13b extends to the outside, communicates with a hood (not shown) provided on the outdoor outer wall of the building, and forms a ventilation air passage for ventilating the air in the house.

  The body 21 is formed in a box shape having an opening on one surface (the lower surface in the installed state). On the opening side of the body 21, a flange (edge) 18 having a screw hole for fixing the body 21 to the ceiling with a screw is provided.

(Decorative panel)
The main body decorative panel 30 is the decorative panel 31 described in the first embodiment. That is, it is a substantially rectangular flat plate that is covered with the flange 18 of the duct ventilation fan 100 and is suspended and supported on the fan casing 22 by a torsion spring 42 so as to close the opening of the body 21. In addition, since the main body decorative panel 30 is the same as the decorative panel 31 described in Embodiment 1, the description thereof is omitted.
The auxiliary suction decorative panel 70 is installed in another room, and is formed in the center of the auxiliary suction decorative panel 70. The auxiliary suction ventilation opening 72 through which air passes is communicated with the duct 13a.

As described above, the duct ventilation fan 100 has the main body decorative panel 30, and the main body decorative panel 30 is the decorative panel 31 described in the first embodiment. Therefore, noise is generated due to “flapping” of the air volume adjusting plates 60 a and 60 b. In addition, since the air volume adjusting plates 60a and 60b are securely held, the suction air volume can be maintained properly and the quality can be improved. Therefore, the duct ventilation fan 100 suppresses noise generation. Thus, the suction air volume can be kept properly. In addition, this makes it possible to adjust the amount of air sucked from the auxiliary suction decorative panel 70, so that the ventilation performance can be improved.
Although the above shows a case where the other room is one room, the present invention is not limited to this, and there may be two or more rooms, or there may be no other room (0 room). May be.

  As described above, the decorative panel 31 according to the present invention is useful for a decorative panel that is suspended and supported by a main body such as a ventilation fan for various ducts.

  12 Discharge port, 13a Duct, 13b Duct, 14 Suction port, 15 Multi-blade fan, 16 Motor, 17 Fan, 18 Flange, 21 Body, 22 Fan casing, 23a Duct connection frame, 23b Duct connection frame, 24a Shutter, 24b Shutter, 26 Locking portion, 30 Main body decorative panel (Embodiment 2), 31 Cosmetic panel (Embodiment 1), 32 Ventilation opening, 33a Adjustment plate engagement protrusion, 33b Adjustment plate engagement protrusion, 34a Adjustment plate engagement protrusion 34b Adjusting plate engaging projection, 42 Torsion spring, 43 Coil part, 44 Locking arm part, 45 Fixing pin, 46 Lattice, 50a Spring holding piece, 50b Spring holding piece, 50c Spring holding piece, 50d Spring holding piece, 51a Outside Holding piece 51b outer holding piece 51c outer holding piece 51d outer holding piece 52 a through hole, 52b through hole, 52c through hole, 52d through hole, 53a inner holding piece, 53b inner holding piece, 53c inner holding piece, 53d inner holding piece, 54a through hole, 54b through hole, 54c through hole, 54d through hole Hole, 55c spring holding piece flange, 55d spring holding piece flange, 56c rib, 56d rib, 57c rib flange, 57d rib flange, 60a air volume adjusting plate, 60b air volume adjusting plate, 61a adjusting plate ventilation portion, 61b adjusting plate ventilation portion, 62a adjustment plate overlapping portion, 62b adjustment plate overlapping portion, 63a adjustment plate main body portion, 63b adjustment plate main body portion, 64a adjustment plate engagement hole, 64b adjustment plate engagement hole, 65a adjustment plate engagement hole, 65b adjustment plate engagement hole, 66a adjustment Plate relief portion, 66b Adjustment plate relief portion, 70 Sub-suction decorative panel (Embodiment 2), 72 Sub-suction vent opening, 100 duct ventilation fan (Embodiment 2).

Claims (5)

A decorative panel comprising a pair of air volume adjusting plates that are detachably attached to the body so as to cover the opening of the body forming the ventilation fan for the duct and cover a part of the substantially rectangular ventilation opening formed in the center portion. Because
A spring holding piece is provided at an edge of the ventilation opening, a rib parallel to the spring holding piece is provided in a predetermined lattice among the plurality of lattices installed in the ventilation opening, and the spring holding piece is An adjustment plate engagement protrusion is formed near the corner of the ventilation opening on the provided surface,
The air volume adjusting plate is a plate material, the adjusting plate main body that cannot be ventilated, the pair of adjusting plate overlapping portions connected to the adjusting plate main body, and the adjusting plate ventilating portion that is sandwiched between the pair of adjusting plate overlapping portions and is freely ventilated And a plurality of adjustment plate engagement holes formed in a row at the corner of the adjustment plate body,
When the pair of air volume adjusting plates are installed in the ventilation openings, the adjustment plate overlapping portions of the pair of air volume adjusting plates partially overlap each other, and the overlapping range includes a part of the spring Floating between the holding piece and the rib is suppressed by a spring holding piece flange formed on the spring holding piece and a rib flange formed on the rib, and any one of the plurality of adjustment plate engagement holes. A decorative panel in which the adjustment plate engagement protrusion enters.   2. The decorative panel according to claim 1, wherein the air volume adjusting plate is made of a black resin.   A body in which an air blower is housed and having an opening, an exhaust duct connecting frame installed on a side surface of the body, an exhaust duct communicating with the exhaust duct connecting frame, and covering the opening A ventilation fan for a duct comprising the decorative panel according to claim 1 or 2 attached in such a manner.   An auxiliary duct having an intake duct connecting frame installed on a side surface of the body, an intake duct communicating with the intake duct connecting frame, and an auxiliary suction ventilation opening communicating with the intake duct; The ventilation fan for a duct according to claim 3, further comprising a suction decorative panel.   The ventilation fan according to claim 4, wherein the decorative panel and the auxiliary suction decorative panel are made of resin.

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