JP2016156539A - Ventilating fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rainwater having intruded from the gap of a shutter from intruding into a room.SOLUTION: A drain hole 9 is provided at a bottom part 21 of a cylindrical part 1 on an indoor 14 side inside a shutter 7. A water stop rib 10 projecting upward is provided at the bottom part 21 of the cylindrical part 1 on the indoor 14 side inside the drain hole 9. Part of rainwater intrudes from the gap between of the shutter 7 and adheres between the shutters 7. Rainwater adhering between the shutters 7 drops along the indoor 14 side of the shutter 7, accumulates on the bottom part 21 of the cylindrical part 1. Rainwater accumulated on an outdoor 15 side outside the water stop rib 10 contacts with the water stop rib 10 to dam up, flows to the drain hole 9, and is discharged to the outdoor 15 side. Consequently, provided is a ventilating fan 13 that can prevent rainwater intruding from the gap of the shutter 7 from intruding to the indoor 14 side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation fan attached to a window or the like and having a shutter.

  Conventionally, this type of ventilation fan is known as a window ventilation fan installed on a window glass.

  Hereinafter, the window ventilation fan described in Patent Document 1 will be described with reference to FIG.

  As shown in FIG. 3, a circular opening 102 provided in the window glass 101 covers the inner peripheral edge, the side surface of the room 103 around the inner peripheral edge and the side surface of the outdoor 104, and is made of resin. Thus, an annular elastic frame 105 is formed by fitting a substantially U-shaped packing member in cross section.

  A cylindrical main body 106 is inserted into the elastic frame 105 from the indoor 103 side.

  A blower 111 is provided in which blades 110 are fixed to a rotation shaft 109 of an electric motor 108 fixed to a fixed leg 107 protruding from an inner peripheral wall inside the main body 106.

  An orifice 113 that guides air to the blades 110 of the blower 111 and a decorative grille 114 that covers the front of the orifice 113 are detachably fitted to the flange portion 112 of the main body 106.

  In addition, a shutter plate 115 is provided at an opening portion on the outdoor 104 side of the main body 106 via a plurality of shutter plates 115 that open and close the opening portion on the outdoor 104 side and a connecting plate 116 that connects these shutter plates 115. A shutter unit 118 including a shutter opening / closing device 117 to be driven is provided.

  The shutter opening / closing device 117 of the shutter unit 118 is connected to the electric motor 108 of the blower 111 and is configured to open the shutter plate 115 when the blower 111 is operating and close the shutter plate 115 when the blower 111 is stopped. ing.

Japanese Patent No. 3255824

  Such a conventional ventilation fan has a problem that rainwater enters through a gap between the shutters, enters the room through the cylindrical part, and becomes dirty.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a ventilation fan that can prevent rainwater that has entered from a gap of a shutter from entering a room.

  In order to achieve this object, the present invention provides a frame having a cylindrical portion that guides indoor air to the outside and a flange portion, an orifice that covers the flange portion, and a motor inside the cylindrical portion. And a fan, and a shutter is provided on the outside of the cylindrical portion, and a drain hole is provided at a bottom portion of the cylindrical portion on the indoor side from the shutter, and the indoor side of the cylindrical portion is located above the drain hole. A convex waterstop rib is provided at the bottom of the cylindrical portion, thereby achieving the intended purpose.

  According to the present invention, a frame having a cylindrical portion that guides indoor air to the outside and a flange portion, an orifice that covers the flange portion, a motor and a fan inside the cylindrical portion, and the cylindrical portion A shutter is provided on the outside of the door, and a drain hole is provided at the bottom of the cylindrical portion on the indoor side of the shutter, and the bottom of the cylindrical portion on the indoor side is located above the drain hole. By providing a convex water retaining rib, some rainwater enters through the gaps between the shutters and adheres between the shutters. Then, it drops, accumulates at the bottom of the cylindrical part, and rainwater collected on the outside of the water stop rib contacts the water stop rib and is blocked by the drainage hole and discharged to the outside of the chamber. Penetration through the gap Rainwater can be prevented from entering into the room, there can be provided an advantage.

Side surface sectional drawing which shows the installation state of the ventilation fan of Embodiment 1 of this invention Perspective view seen from outside showing the state of the ventilation fan without shutter Side sectional view showing the installation state of a conventional ventilation fan

  The ventilation fan according to claim 1 of the present invention includes a frame having a cylindrical portion that guides indoor air to the outside and a flange portion, an orifice that covers the flange portion, and a motor and a fan inside the cylindrical portion. The tubular portion has a shutter on the outdoor side, and a drain hole is provided in a bottom portion of the tubular portion on the indoor side from the shutter, and the tubular portion on the indoor side from the drain hole. The bottom has a structure in which a convex water retaining rib is provided upward. As a result, some rainwater enters through the gaps between the shutters and adheres between the shutters, and the rainwater that adheres between the shutters drip through the interior of the shutters and collects at the bottom of the cylindrical part, Rainwater that accumulates on the outside of the water stop ribs is blocked against the water stop ribs, flows into the drain holes, and is discharged outside the room, so that rainwater that enters through the shutter gaps enters the room. There is an effect that can be prevented.

  The height of the water retaining rib may be lower than the height of the inner wall of the orifice. As a result, the wind flows from the fan to the inside of the inner wall, so that the air volume can be secured.

  Moreover, you may make it the structure that a water stop rib is comprised by components different from a flame | frame. As a result, the water retaining rib is fixed to the frame with an adhesive or the like, so that it is possible to prevent rainwater that has entered from the gap of the shutter from entering any room in any frame.

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

(Embodiment 1)
As shown in FIGS. 1 and 2, the ventilation fan 13 according to the first embodiment has a cylindrical portion 1 that guides air 16 in the room 14 to the outdoor 15.

And the flange part 2 which protrudes outward is provided in the edge part by the side of the room | chamber 14 of the cylindrical part 1,
A motor fixing leg portion 12 for fixing a motor 5 described later is provided inside, that is, inside, the cylindrical portion 1.

  And the frame 3 is comprised by the cylindrical part 1, the flange part 2, and the motor fixing leg part 12 which were mentioned above.

  The orifice 4 is provided so as to cover the flange portion 2.

  The motor fixing leg portion 12 has a shape that is connected to the inside of the cylindrical portion 1 from the motor fixing portion 17 that holds the motor 5 in the center via the three radial motor support portions 18.

  The motor 5 (which may be either AC or DC) is fixed to the motor fixing portion 17 with screws or the like.

  Then, the fan 6 (for example, a propeller fan) is inserted into the shaft 19 of the motor 5 and stopped by the spinner 20 from above.

  A shutter 7 (either a wind pressure shutter or a mechanical shutter may be used, but a wind pressure shutter is used in the first embodiment) is provided on the outdoor side of the cylindrical portion 1.

  Then, the ventilation fan 13 is attached to the window 8.

  The bottom 21 of the cylindrical portion 1 has a water drain hole 9 (the water drain hole 9 may be square or round) and a water drain hole 9 on the indoor 14 side of the shutter 7 and on the outdoor 15 side of the window 8. In addition, a convex water retaining rib 10 is provided on the interior 14 side.

  Thereby, when the shutter 7 is closed, most of the rainwater collides with the shutter 7 and flows to the outdoor 15, but some rainwater enters from the gap between the adjacent shutters 7 and adheres to the shutter 7. Moreover, it adheres to the inside of the cylindrical part 1.

  Then, rainwater adhering to the gap between the shutters 7, that is, in the gap between the adjacent shutters 7, drops etc. along the indoor 14 side of the shutter 7.

  And it collects between the drain hole 9 and the water stop rib 10 of the bottom part 21 of the inner surface of the cylindrical part 1, or is discharged | emitted from the drain hole 9 to the outdoor 15 as it is.

  The rainwater adhering to the inner surface of the tubular portion 1 flows along the inner surface of the tubular portion 1 and accumulates between the drain hole 9 and the water retaining rib 10 in the bottom portion 21 of the tubular portion 1 or remains as it is. It is discharged from the hole 9 to the outdoor 15.

  The rainwater collected at the bottom 21 of the tubular portion 1 enters the room 14 if the drain hole 9 and the water retaining rib 10 are not provided. However, when rainwater is dammed by the water retaining rib 10 and becomes a puddle, and when the rainwater accumulates and the puddle becomes large enough to touch the drain hole 9, the rainwater is discharged from the drain hole 9 to the outdoor 15. Therefore, it is possible to prevent rainwater that has entered from the gap between the shutters 7 from entering the room 14.

  Further, the water retaining rib 10 is made higher than the height of the puddle, and the height varies depending on the material of the cylindrical portion 1, but is preferably 3 mm or more (for example, when the material is polypropylene). Lower than the height of the inner wall.

  As a result, the water retaining rib 10 does not obstruct the air passage through which the air 16 flows from the indoor 14 to the outdoor 15 and does not reduce the air volume.

  Further, the water retaining rib 10 is provided in the vicinity of the end portion of the cylindrical portion 1 on the indoor 14 side.

  As a result, most of the rainwater that accumulates at the bottom 21 of the cylindrical portion 1 gathers in the outdoor 15 rather than the water retaining rib 10, and most of the rainwater that accumulates at the bottom 21 of the cylindrical portion 1 is discharged to the outdoor 15.

  The water retaining rib 10 may be configured as a separate part instead of being integrated with the frame 3, and the water retaining rib may be fixed to the frame 3 with an adhesive or the like.

  As a result, the shutter stopper 11 is provided at the end of the cylindrical portion 1 on the outdoor 15 side, and the water retaining rib can be easily provided even when it is difficult to provide the water retaining rib 10 with a mold.

  The ventilating fan according to the present invention is useful for a ventilating fan installed in a living room, a toilet, a bathroom, or the like as being capable of preventing rainwater from entering the room when the shutter is closed.

DESCRIPTION OF SYMBOLS 1 Cylindrical part 2 Flange part 3 Frame 4 Orifice 5 Motor 6 Fan 7 Shutter 8 Window 9 Drain hole 10 Water retaining rib 11 Shutter pad 12 Motor fixed leg part 13 Ventilation fan 14 Indoor 15 Outdoor 16 Air 17 Motor fixed part 18 Motor support Part 19 Shaft 20 Spinner 21 Bottom

Claims (3)

A frame having a cylindrical portion for guiding indoor air to the outside and a flange portion; an orifice for covering the flange portion; a motor and a fan inside the cylindrical portion; and the outdoor portion of the cylindrical portion on the outdoor side There is a shutter, and a drain hole is provided at the bottom of the tubular portion on the indoor side from the shutter, and a water-stopping rib that is convex upward at the bottom of the tubular portion on the indoor side than the drain hole. A ventilation fan characterized by providing. The ventilation fan according to claim 1, wherein the height of the water retaining rib is lower than the height of the inner wall of the orifice. The ventilation fan according to claim 1 or 2, wherein the water retaining rib is constituted by a part separate from the frame.

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