JP5564992B2 - Recessed ceiling ventilation fan - Google Patents

Description

  The present invention relates to a ceiling-embedded ventilation fan that is attached mainly to a ceiling surface or a side surface of a bathroom, communicates the outside and a main body with a duct, and ventilates air in the bathroom.

  Conventionally, what was described in patent document 1 is known as an example of this kind of ceiling-embedded ventilation fan.

  The ceiling-embedded ventilation fan will be described below with reference to FIG.

  As shown in FIG. 11, an electric motor 103 is fixed to the upper side of the main body case 102 of the ventilation fan main body 101. A blower blade 105 is fixed to the rotating shaft 104 of the electric motor 103 to form an electric blower. The blower blade 105 is disposed in the intake chamber formed at the outer edge side standing portion of the casing 106, and sucks room air from an orifice-shaped intake port 107 positioned below the intake chamber. Exhaust from the exhaust port 108 located on the side to the outside. The lower side of the blower blade 105 is covered with a bottom portion 106a of the casing 106 in which the intake port 107 is formed. And the casing 106 and the ventilation fan main body 101 are comprised by another component.

Japanese Patent No. 2826247

  In such a conventional ceiling-mounted ventilation fan, condensed water generated inside the casing 106 of the ceiling-mounted ventilation fan attached to the bathroom is discharged from the duct 109, but the casing 106 and the ventilation fan body 101 are separate parts. Therefore, there is a problem that the condensed water may leak from the joint 110, and the leaked condensed water drops into the bathroom and falls on the user who is taking a bath.

  The present invention solves such a conventional problem, prevents the occurrence of leakage of condensed water from the joint of a ceiling-mounted ventilation fan attached to a bathroom, and further condensate water generated inside the ventilation fan body. An object of the present invention is to provide a ceiling-embedded ventilation fan that can suppress the amount of itself and prevent condensed water from falling on a user taking a bath.

  In order to achieve this object, the present invention includes a box-shaped frame that is inserted and attached to the back of the ceiling and has an opening facing the indoor side on the lower surface, and a suction port on the lower surface in the frame. A scroll-shaped casing having a discharge port on a side surface, a centrifugal air blowing blade disposed in the casing, a decorative panel that covers the opening from the indoor side and is detachably mounted, and the centrifugal air blowing blade A rotating electric motor is provided on the top surface of the frame, the casing includes an orifice that forms the suction port, the orifice, the casing, and the frame are formed of the same component, and the top surface is formed of a steel plate. It is formed, and this achieves the intended purpose.

  According to the present invention, a box-shaped frame that is inserted and attached to the back of the ceiling and has an opening facing the indoor side on the lower surface, and a scroll that has a suction port on the lower surface and a discharge port on the side surface in the frame. A casing, a centrifugal fan blade disposed in the casing, a decorative panel that covers the opening from the indoor side and is detachably mounted, and an electric motor that rotationally drives the centrifugal fan blade. In the top surface, the casing includes an orifice that forms the suction port, the orifice, the casing, and the frame are formed of the same part, and the top surface is formed of a steel plate. , Which prevents condensation from occurring in the casing of a ceiling-mounted ventilation fan installed in the bathroom from leaking from the joints of the parts, It is possible to obtain an effect of preventing.

Sectional drawing which shows the attachment state of the ceiling embedded type ventilation fan of Embodiment 1 of this invention Exploded perspective view showing the component structure of the ceiling-mounted ventilation fan The figure which shows the junction part of the adapter part of the same ceiling embedded type ventilation fan ((a) bottom view, (b) side view) The figure which shows the shape of the decorative panel of the ceiling embedded ventilation fan ((a) Front view, (b) Side view) Sectional drawing which shows the state attached to the ceiling of the ceiling embedded ventilation fan The perspective view which shows the ceiling embedded type ventilation fan of Embodiment 2 of this invention The figure which shows the position of the air layer of the ceiling embedded type ventilation fan ((a) top view, (b) side view) Sectional view showing the positional relationship between the cover and orifice of the ceiling-mounted ventilation fan The figure which shows the decorative panel of the ceiling embedded type ventilation fan of Embodiment 3 of this invention ((a) front view, (b) side view) Sectional drawing which shows the attachment position of the ceiling embedding type ventilation fan moisture absorption material of Embodiment 4 of this invention Sectional drawing which shows the ceiling embedded type ventilation fan attached to the conventional bathroom

Ceiling embedded type ventilation fan of the present invention is mounted is inserted into the ceiling, ejection and box-like frame having an opening facing the lower surface to the indoor side, in the frame, the side surfaces having a suction port on the bottom surface A scroll-shaped casing having an outlet, a centrifugal blower blade disposed in the casing, a decorative panel that covers the opening from the indoor side and is detachably mounted, and rotationally drives the centrifugal blower blade An electric motor is provided on the top surface of the frame, the casing includes an orifice that forms the suction port, the orifice, the casing, and the frame are formed of the same component, and the top surface is formed of a steel plate. It has a configuration. As a result, there is no joint between the casing, the orifice, and the frame parts, and the condensed water is prevented from flowing out from the gap between the joints, so that it is possible to prevent the condensed water from falling on the user during bathing. .

  Also, a detachable adapter part having a discharge port is provided, and has a concave and convex shape corresponding to the joint part between the adapter part and the frame, and the joining means between the adapter part and the frame is provided on the adapter part side. The adapter part and the frame may be detachable by sliding up and down with a claw-shaped part to be provided. As a result, the junction between the adapter part and the frame becomes a maze structure, so that cold air from the outside of the frame is prevented from entering the frame, and as a result, the generation of condensed water is prevented. There is an effect that it can be reduced.

  Also, a resin plate is provided at the bottom of the top surface, a hole that is slightly larger than the size of the outer shell of the motor is provided in the resin plate, and the motor is fixed to the top surface through the hole. May be. This prevents cold air from being conducted into the frame by the resin plate, and prevents moisture in the frame from directly touching a sheet metal having a low temperature, thereby reducing condensed water generated from the top surface of the frame. As a result, the amount of condensed water generated from the top of the frame can be reduced.

  Further, the outer frame may be covered with a resin-made wall through an air layer having an opening, and the air layer may be a sealed space as a separate part in the opening. Accordingly, the heat insulation structure by the air layer reduces the temperature difference between the wall portion on the inner surface of the frame and the air, so that the amount of condensed water generated around the frame can be reduced.

  Further, the opening may be covered with a cover that does not overlap the orifice. Thereby, the flow of air containing moisture is limited and the generation area is reduced, so that the amount of condensed water generated can be reduced from the opening to the suction port of the orifice.

  Further, the cover may be formed by a surface that is connected to the bell mouth opening of the orifice and connected at the shortest distance. As a result, the flow of moisture containing air is limited, the generation area of condensed water is reduced, and the pressure loss of the air volume is suppressed as much as possible. Therefore, the generated amount of condensed water is reduced from the opening to the inlet of the orifice. In addition, there is an effect that the pressure loss can be suppressed and an increase in noise can be prevented.

  In addition, a second orifice having an opening shape having substantially the same opening area as the orifice is provided from the opening to the bell mouth opening of the orifice, the opening other than the opening shape of the second orifice is closed, and the orifice You may make it the structure that the clearance gap between the bell mouth and the 2nd orifice was opened a little. As a result, the flow of moisture containing air is limited, the generation area of condensed water is reduced, and sound is silenced in the gap between the orifice and the second orifice, so the amount of condensed water generated from the opening to the inlet of the orifice is reduced. There is an effect that the noise can be reduced and the noise can be reduced by the silencing effect.

  Moreover, you may make it the structure that the electrical equipment part which controls the driving | operation of an electric motor was provided in the upper part of the top | upper surface. As a result, the power supply connection part is not provided inside the main body, but is provided in the ceiling space, so that the power supply connection drawn in from the ceiling of the bathroom is provided in the main body, and the back of the ceiling without being drawn into the humid interior. It can be concise and can prevent the intrusion of cold air and improve the safety. Therefore, the prevention of the intrusion of cold air can reduce the generation of condensed water and increase the safety. .

  Moreover, you may make it the structure that the shape of the decorative panel was made into the shape of the flat horizontal lattice parallel to a ceiling surface. As a result, it is no longer concentrated at the lowest point due to the gravitational drop that adheres to the decorative panel, and the drop does not grow and is held by the louver. There is an effect that can be prevented.

  Further, the main plate of the centrifugal blower blade may be configured to completely cover the electric motor when viewed from the lower surface. By covering the electric motor with the centrifugal blower blade, this reduces the risk of moisture contact with the motor surface and prevents the generation of rust and dew condensation water. There is an effect that can be prevented from falling.

  Further, the side surface of the frame facing the discharge port on the side surface may be inclined toward the discharge port side of the side surface as it goes upward. Thereby, since it will attach to a ceiling, without removing an adapter part, there exists an effect that workability | operativity can be improved.

  Moreover, you may make it the structure that the main board of the centrifugal ventilation blade | wing was provided in the ceiling surface side. Thereby, even if the top surface side of the casing is cut, it is difficult to affect the performance of the centrifugal blower blade, so that the workability is improved and the performance is lowered and the noise is not increased. .

  Moreover, you may make it the structure that the coating which prevents a dirt was provided in the surface of the centrifugal blowing blade. This prevents dust from adhering to the centrifugal blower blade without care of the centrifugal blower blade, and prevents dust from adhering to reducing the air volume and increasing the rotational speed. There is an effect that it is possible to eliminate labor and prevent an increase in noise due to pressure loss.

  Moreover, you may make it the structure that the hygroscopic material was affixed on the inner surface of the flame | frame. Accordingly, the condensed water is absorbed by the hygroscopic material and the dripping water is prevented from dripping. Therefore, there is an effect that the condensed water can be prevented from falling on the user who is taking a bath without using a separate member.

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

(Embodiment 1)
As shown in FIGS. 1 to 5, a box-like frame 4 that is inserted into the ceiling and attached to the ceiling surface 1 and has an opening 3 facing the indoor side 2 on the lower surface, and the lower surface of the frame 4 is sucked into the lower surface. A scroll-shaped casing 7 having a port 5 and a discharge port 6A on a side surface, a centrifugal blower blade 8 disposed in the casing 7, and the opening 3 covering from the indoor side 2 are detachably mounted. A decorative panel 9 that is curved and discharged, and an electric motor 10 that rotationally drives the centrifugal blower blade 8 is provided on the top surface 11 of the frame 4. The casing 7 has an orifice that forms the suction port 5. 12, the orifice 12, the casing 7, and the frame 4 are formed of the same component, and the top surface 11 is formed of a steel plate. A resin plate 13 is provided below the top surface 11, The plate 13 is electrically operated A hole 14 that is slightly larger than the size of the outer shell 10 is provided, the electric motor 10 is fixed to the top surface 11 with screws through the hole 14, and the electric motor 10 is viewed from the casing 7 side. The screw and the top surface 11 are completely hidden by the resin plate 13.

  Further, a detachable adapter part 15 having a discharge port 6B is provided, and has a concavo-convex shape 17 corresponding to each joint portion 16 between the adapter part 15 and the frame 4, and a concavo-convex shape 17a on the frame 4 side and the adapter part 15 The adapter part 15 is slid up and down by a claw-shaped part 18 provided on the adapter part 15 side, and the adapter part 15 and the frame 4 are joined together. The frame 4 can be removed.

  In addition, an electrical component 19 that controls the operation of the electric motor 10 is provided above the top surface 11, and is completely separated from the space inside the frame 4, and the ceiling space 22 above the top surface 11. With this, all electrical work is completed.

  Further, the main plate 20 of the centrifugal blower blade 8 completely covers the electric motor 10 when viewed from the lower surface, and the electric motor 10 is completely invisible when viewed from the lower side. It has a configuration that is close to the 1 side. In addition, the centrifugal blower blade 8 is formed by mixing a coating that hardly adheres dirt such as dust or a material that reduces the risk of dust adhesion due to static electricity, such as an antistatic material.

  Further, the side surface 21 of the frame 4 that faces the discharge port 6 on the side surface is inclined toward the discharge port 6 side of the side surface 21 toward the upper side, and the resin plate 13 on the upper side thereof also follows the inclination. The plate 13 forms part of the casing 7.

  With the above configuration, there is no seam between the parts of the casing 7, the orifice 12, and the frame 4, the condensed water is prevented from flowing out through the gap between the seams, and the joining between the adapter unit 15 and the frame 4 has a maze structure. 4 prevents the cold air from the outside from entering the frame 4 and, as a result, prevents the generation of condensed water due to the cold air. Further, on the upper side in the frame 4, the resin plate 13 prevents cold air from being conducted into the frame 4, and further prevents moisture in the frame 4 from directly touching the top surface 11 made of sheet metal having a low temperature. Condensed water generated from the top surface 11 is reduced. Moreover, since the top surface 11 is made of sheet metal, heat generated from the electric motor 10 is radiated, and the temperature of the electric motor 10 itself can be lowered. In addition, by providing the electrical component 19 in the ceiling space 22 without providing it inside the frame 4, a power supply connection port that is drawn from the ceiling of the bathroom is provided in the frame 4 and drawn into the indoor side 2 where the humidity is high. It can be completed in the ceiling space 22 and the intrusion of cold air is prevented and the safety is improved. Moreover, by covering the electric motor 10 with the main plate 20 of the centrifugal blower blade 8, the risk of moisture contact with the surface of the electric motor 10 is reduced, and the generation of rust and condensed water is prevented. And even if the top surface 11 side of the casing 7 is cut, the main plate 20 of the centrifugal blower blade 8 is close to the top surface 11 side and is on the cut side. Since it is cut, it is difficult to affect the performance, and the cut shape enables the attachment to the ceiling surface 1 without removing the adapter portion 15 as shown in FIG. Moreover, dust is hard to adhere to the centrifugal blower blade 8, and the work efficiency of the blade due to the dust being attached is prevented and the rotation speed is prevented from increasing.

  As described above, according to the ceiling-embedded ventilation fan of the first embodiment of the present invention, the leakage of condensed water generated in the casing 7 of the ceiling-mounted ventilation fan attached to the bathroom is suppressed, and is generated inside the frame 4. The amount of condensed water can be reduced, and it is possible to prevent the condensed water from falling on a user who is taking a bath without using a separate member. Moreover, the safety | security of a product can be improved by relieving the temperature rise of the electric motor 10, without bringing the humidity in a bathroom near the electrical equipment part 19. FIG. In addition, since it can be directly attached to the ceiling surface 1 without removing the parts, it is possible to improve the workability, reduce the performance and not increase the noise, and eliminate the need for care for the user. It becomes.

(Embodiment 2)
As shown in FIGS. 6 to 8, in the second embodiment, the outer wall of the frame 4 is covered with a wall formed of resin through an air layer 24 having an opening 23 as compared with the first embodiment. In the opening 23, the air layer 24 is sealed with a separate part 25, and the opening 3 is covered with a cover 26 that does not overlap the orifice 12, and the cover 26 covers the bell mouth opening 27 of the orifice 12 to the shortest distance. A second orifice 29 having an opening shape 28 having substantially the same opening area as that of the orifice 12 is provided from the opening 3 to the bell mouth opening 27 of the orifice 12, and the second orifice Other than the opening shape 28 of 29, the opening 3 is blocked, and the gap between the bell mouth opening 27 and the second orifice 29 of the orifice 12 is slightly different.

  With the above configuration, the air flow including moisture is limited by the cover 26, the generated area is reduced, and the air resistance is small, so that the pressure loss is not increased and the bell mouth opening 27 of the orifice 12 and the second air flow are reduced. The gap with the orifice 29 serves as a silencer to mute the blowing noise.

  As described above, according to the ceiling-embedded ventilation fan according to the second embodiment of the present invention, the amount of condensed water generated around the frame can be reduced, and pressure loss can be suppressed to prevent an increase in noise. Further, a silencing effect can be obtained.

(Embodiment 3)
As shown in FIG. 9, the first and second embodiments are different in that the decorative panel 9 </ b> A has a flat horizontal lattice shape parallel to the ceiling surface.

  With the above-described configuration, the droplets that are attached to the decorative panel 9A are not concentrated at the lowest point due to the gravity, and the droplets are held by the louvers without growing. Moreover, although dew condensation water also accumulates inside the decorative panel 9A, since it has a flat shape, the dew condensation water can be further retained inside the decorative panel 9A.

  Thus, according to the ceiling-embedded ventilation fan of Embodiment 3 of the present invention, it is possible to prevent the condensed water from falling on the user who is taking a bath without using a separate member.

(Embodiment 4)
As shown in FIG. 10, the second embodiment is different from the first embodiment only in that a hygroscopic material 30 is attached to the inner surface of the frame 4.

  With the above-described configuration, the moisture absorbent 30 absorbs the condensed water and prevents the condensed water from dripping.

  As described above, according to the ceiling-embedded ventilation fan of the fourth embodiment of the present invention, it is possible to prevent the condensed water from falling on the user who is taking a bath without using a separate member.

  The ceiling-embedded ventilation fan according to the present invention can reduce dripping of condensed water, so that it is useful as a ventilation fan having a scroll shape embedded in the ceiling and a centrifugal fan blade used in a bathroom. It is.

DESCRIPTION OF SYMBOLS 1 Ceiling surface 2 Indoor side 3 Opening 4 Frame 5 Suction port 6 Discharge port 6A Discharge port 6B Discharge port 7 Casing 8 Centrifugal blower blade 9 Cosmetic panel 9A Cosmetic panel 10 Electric motor 11 Top surface 12 Orifice 13 Plate 14 Hole 15 Adapter unit 16 Joining Part 17 Uneven shape 18 Claw-shaped part 19 Electrical part 20 Main plate 21 Side surface 22 Ceiling space 23 Opening 24 Air layer 25 Separate parts 26 Cover 27 Bell mouth opening 28 Opening shape 29 Second orifice 30 Hygroscopic material

Claims (12)

A box-shaped frame that is inserted and attached to the back of the ceiling and has an opening facing the indoor side on the lower surface; a scroll-shaped casing having a suction port on the lower surface and a discharge port on the side surface in the frame; A centrifugal blower blade disposed in a casing, a decorative panel that covers the opening from the indoor side and is detachably mounted, and an electric motor that rotationally drives the centrifugal blower blade are provided on the top surface of the frame, the casing, said comprising an orifice to form a suction port, and said orifice and said casing and said frame be those formed of a steel plate the top is formed by the same components, the lower portion of the top surface the resin plate to reduce the dew condensation water said generated from the top surface of the frame is provided, on the plate of the resin a hole slightly larger than the size of the outer shell of the electric motor, the electrostatic by penetrating the hole Ceiling embedded type ventilation fans the machine you characterized in that fixed to the top surface. The outer frame, via an air layer having an opening covered with the formed walls resin, the said opening according to claim 1, characterized in that a closed space the air layer as separate parts Ceiling-mounted ventilation fan. The ceiling-embedded ventilation fan according to claim 1 or 2 , wherein a cover that does not overlap the orifice is provided to cover the opening. 4. The ceiling-embedded ventilation fan according to claim 3 , wherein the cover is formed by a surface that is connected to the bell mouth opening of the orifice at a shortest distance. A second orifice having an opening shape having substantially the same opening area as the orifice is provided from the opening to the bell mouth opening of the orifice, the opening other than the opening shape of the second orifice is closed, and the bell mouth of the orifice is provided. The ceiling-embedded ventilation fan according to claim 3 , wherein a gap between the first orifice and the second orifice is slightly opened. The ceiling-embedded ventilation fan according to any one of claims 1 to 5 , wherein an electrical component that controls operation of the electric motor is provided on an upper portion of the top surface. The ceiling-embedded ventilation fan according to any one of claims 1 to 6 , wherein the decorative panel has a flat horizontal lattice shape parallel to the ceiling surface. The ceiling-embedded ventilation fan according to any one of claims 1 to 7 , wherein the main plate of the centrifugal blower blade completely covers the electric motor when viewed from the lower surface. The ceiling-embedded ventilation fan according to any one of claims 1 to 8 , wherein a side surface of the frame facing the side discharge port is inclined toward the discharge port side of the side surface as it goes upward. The ceiling-embedded ventilation fan according to any one of claims 1 to 9 , wherein the main plate of the centrifugal blower blade is provided on the ceiling surface side. The ceiling-embedded ventilation fan according to any one of claims 1 to 10 , wherein a coating for preventing dirt is provided on a surface of the centrifugal blower blade. The ceiling-embedded ventilation fan according to any one of claims 1 to 11 , wherein a hygroscopic material is attached to an inner surface of the frame.

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