WO2011148645A1

WO2011148645A1 - Ventilation device

Info

Publication number: WO2011148645A1
Application number: PCT/JP2011/002961
Authority: WO
Inventors: 大輔坪佐; 仁吉川
Original assignee: パナソニック株式会社
Priority date: 2010-05-28
Filing date: 2011-05-27
Publication date: 2011-12-01
Also published as: JP5556378B2; JP2011247527A

Abstract

Disclosed is a ventilation device provided with a wind tunnel pipe, a cylindrical portion, a louver, a flange, a frame, and an electric component box, wherein the electric component box is comprised of an electric component box case and an electric component box cover. A first fitting portion at which the electric component box case is fitted with the electric component box cover, and a second fitting portion at which a motor case containing a motor and being integrally formed with the cylindrical portion is fitted with a motor cover protecting the motor, are overlapped in a stepwise manner.

Description

Ventilation equipment

The present invention relates to a ventilator provided with a power connection terminal electrically connected to a motor.

FIG. 14 is a diagram showing a state in which the conventional ventilation device is attached to the ceiling, and FIG. 15 is a rear view of the ventilation device. The ventilator provided with the power connection terminal 112 electrically connected to the motor 105 can connect the power line to the power connection terminal 112 by removing the coating. In this type of conventional ventilator, a power connector 112 is installed in a main body frame (see, for example, Patent Document 1).

The conventional ventilator is composed of at least two power connection terminals 112 having different polarities, each of which has the electrical component 110 formed as a separate part. Since the power connection terminals 112 are configured to be shifted from each other with respect to the insertion direction of the power supply wires, it is difficult to reduce the size of the electrical component 110. In addition, measures for preventing water droplets and dust from entering the motor 105 have not been taken.

JP 2008-232488 A

The present invention is provided in a wind tunnel pipe provided in a wall portion so as to communicate an indoor side opening and an outdoor side opening, a cylindrical portion mounted on the wind tunnel pipe and provided with a fan and a motor, and provided in the indoor side opening. A louver, a flange portion formed continuously in a cylindrical shape in a direction orthogonal to the motor shaft of the motor on the outer periphery of the indoor opening of the cylindrical portion, and an upward rising from the flange portion toward the wall portion, respectively An electrical box case having a power supply connection terminal and a power cord fixing portion, and a frame formed of a flange portion and an upper rise portion, and an electrical box housed in the frame. In the ventilation device composed of the electrical box cover that covers the electrical box case, the electrical box case and the electrical box cover are The first fitting part to be joined and the second fitting part that is integrally formed with the cylindrical part and accommodates the motor case that houses the motor and the motor cover that protects the motor are overlapped stepwise. Yes.

As a result, the water adhering to the electrical box flows down from the electrical box cover along the electrical box surface. Even if water adheres to the first fitting portion between the electrical box case and the electrical box cover, the water does not enter the interior by overlapping the first fitting portion in a stepped manner. Therefore, water does not adhere to the charging part inside the electrical box, and the insulation performance is improved. Therefore, it is not necessary to ensure insulation performance at the power connection terminal portion, and the electrical box can be downsized.

Also, since the motor case and the motor cover are provided with a second fitting portion for fitting, water droplets and dust do not enter the motor.

FIG. 1 is a cross-sectional view showing an attached state of the ventilation device according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view showing the configuration of the electrical box of the ventilation device. FIG. 3 is a cross-sectional view of the electrical box of the ventilation device. FIG. 4 is a partial cross-sectional view of the ventilation device. FIG. 5 is a cross-sectional view of a different electrical box of the ventilation device. FIG. 6 is a cross-sectional view of still another electrical equipment box of the ventilation device. FIG. 7 is a rear view of the ventilation device. FIG. 8 is a rear view showing a drain hole of the ventilation device. FIG. 9 is a perspective view showing a drain hole of the ventilator. FIG. 10 is a vertical cross-sectional view parallel to the air blowing direction of the terminal block portion of the electrical equipment box of the ventilation device according to the second embodiment of the present invention. FIG. 11 is an exploded perspective view showing an electrical box of the ventilation device. FIG. 12 is a horizontal cross-sectional view of the terminal block portion of the electrical box of the ventilation device. FIG. 13 is a perspective view showing an electrical box of the ventilation device. FIG. 14 is a diagram illustrating a state in which a conventional ventilation device is attached to a ceiling. FIG. 15 is a rear view of the ventilation device.

Hereinafter, a ventilator according to an embodiment of the present invention will be described with reference to the accompanying drawings.

(Embodiment 1)
FIG. 1 is a cross-sectional view showing an attached state of the ventilation device according to Embodiment 1 of the present invention. As shown in FIG. 1, the ventilation device 50 according to the first embodiment includes a wind tunnel pipe 2, a cylindrical portion 5, and a louver 51. Here, the wind tunnel pipe 2 is provided in the wall portion 1 so as to communicate the indoor side opening 6a and the outdoor side opening 6b. The cylindrical portion 5 is provided with a fan 3 and a motor 4 therein. Louver 51 is provided in indoor opening 6a so as to cover fan 3. Usually, such a ventilator 50 is provided with a louver 51 on the indoor side and exhausts indoor air to the outside.

The cylindrical part 5 is attached to the wind tunnel pipe 2. A flange portion 7 a is formed on the outer periphery of the indoor opening 6 a of the cylindrical portion 5 so as to be continuous with the cylindrical portion 5 in a substantially rectangular shape in a direction orthogonal to the motor shaft 28 of the motor 4. Further, an upper rising portion 7b and a lower rising portion 7c are formed from the flange portion 7a toward the wall portion 1, respectively. A frame 9 for housing the electrical box 8 is constituted by the flange portion 7a and the upper rising portion 7b.

FIG. 2 is an exploded perspective view showing the configuration of the electrical box of the ventilator according to Embodiment 1 of the present invention, and FIG. 3 is a cross-sectional view of the electrical box of the ventilator. As shown in FIGS. 1 to 3, in such a ventilator 50, the electrical box 8 includes an electrical box case 8a having a power connection terminal 12 and a power cord fixing portion 13, and an electrical box case 8a serving as a lid. And an electric box cover 8b covering the box. The first fitting portion 52 into which the electrical box case 8a and the electrical box cover 8b are fitted has a shape that is overlapped in a staircase shape. Furthermore, the end 8c of the electrical box cover 8b is provided up to the bottom surface 8d of the electrical box case 8a.

FIG. 4 is a partial cross-sectional view of the ventilation device according to the first embodiment of the present invention. A second fitting portion 53 that is integrally formed with the tubular portion 5 and accommodates the motor case 10 that houses the motor 4 and the motor cover 11 that protects the motor 4 has a shape that is overlapped in a staircase shape. .

Further, a protective flange 26 in which the motor case 10 is formed in a cylindrical shape is provided at an outlet portion 28 a from the motor 4 of the motor shaft 28 extending from the motor 4. The boss portion 27 of the fan 3 is inserted so as to overlap the protective flange 26.

Since the second fitting portion 53 has a stepped shape, it is difficult for water to enter and dust to enter, so that water does not adhere to the motor charging portion, and dust contained in the exhaust gas is difficult to enter. Further, when air containing moisture is exhausted, the air is less likely to come into contact with the motor shaft 28, so that the motor shaft 28 is less likely to rust. Also, dust and the like are less likely to adhere to the motor shaft 28.

The water adhering to the electrical box 8 flows down from the outer wall of the electrical box cover 8b along the outside of the bottom surface 8d of the electrical box case 8a. Some small amount of water adheres to the first fitting portion 52. However, since the first fitting portion 52 is secured to about 20 mm and is further overlapped in a staircase shape, it is difficult for water to enter the electrical box 8. Therefore, water does not adhere to the charging part inside the electrical box 8 and the insulation performance is improved. In this way, since the intrusion of water is prevented in the outer portion of the electrical box 8, the power connection terminals 12 are separate parts and do not need to be shifted from each other. As a result, since a large space is not required, the ventilator 50 having excellent insulation performance while being a small electrical box 8 is realized.

FIG. 5 is a cross-sectional view of a different electrical box of the ventilation device according to the first embodiment of the present invention. As shown in FIG. 5, the end portion 8c of the electrical box cover 8b may be located on the flange portion 7a side beyond the bottom surface 8d of the electrical box case 8a. If it does in this way, since the water adhering to the electrical equipment box 8 will be dripped without contacting the 1st fitting part 52, water will not adhere to the charging part inside the electrical equipment box 8. FIG.

FIG. 6 is a cross-sectional view of still another electrical equipment box of the ventilation device according to Embodiment 1 of the present invention. As shown in FIG. 6, the electrical box cover 8b may be formed so as to cover a part of the bottom surface 8d along the bottom surface 8d of the electrical box case 8a. If it does in this way, since the distance of the overlapping part of the electrical box case 8a and the electrical box cover 8b becomes long and the overlapping part is in the vertical direction, water does not enter. Further, even when a gap occurs in the overlapping portion due to deformation at the time of component molding, since the electrical box cover 8b covers the electrical box case 8a, the influence of the gap is reduced, and a water intrusion prevention structure that is not affected by manufacturing conditions is obtained. .

FIG. 7 is a rear view of the ventilator according to the first embodiment of the present invention. As shown in FIG. 7, a guide rib 14 formed below the power cord outlet 15 is provided in the flange portion 7 a in the vicinity of the power cord outlet 15 of the electrical box 8. The height of the guide rib 14 from the flange portion 7a is the same as the length of the upper rising portion 7b of the frame 9 in FIG. 3, and the power cord outlet 15 is provided obliquely downward in the vertical direction. It is conceivable that water adheres to the power cord 17 and enters the electrical box 8 through the power cord 17. However, if this is done, the power cord 17 is routed obliquely downward from the power cord outlet 15, passes through the lower end of the guide rib 14, and is then drawn out from the power cord outlet 16 above the frame 9. Accordingly, the water that has entered the frame 9 through the power cord 17 drops at the portion of the power cord 17 that is curved downward and below the guide rib 14, and therefore does not enter the electrical box 8.

The height of the guide rib 14 from the flange portion 7a is the same as the length of the upper rising portion 7b of the frame 9. Therefore, when the power cord 17 is installed on the wall 1 in a state where it rides on the guide rib 14, a gap is generated between the frame 9 and the wall 1. That is, when the power cord 17 is not correctly wired, the installer can easily notice the wiring error, so that the power cord 17 can be drained without fail.

Also, water droplets adhering to the vicinity of the power cord outlet 15 flow down from the power cord outlet 15 provided obliquely downward. Therefore, even when high-humidity air adheres to the vicinity of the power cord outlet 15 and becomes water droplets, it can be discharged outside without water droplets adhering to the charging portion inside the electrical box 8.

8 is a rear view showing a drain hole of the ventilator according to Embodiment 1 of the present invention, and FIG. 9 is a perspective view showing a drain hole of the ventilator. As shown in FIGS. 8 and 9, a drain hole 18 is provided in the lower rising portion 7c of the frame 9, in the vicinity of the power cord outlet 15, and in the vicinity of the motor lead wire inlet 19 provided in the electrical box case 8a. If it does in this way, the water which permeated from between the wall part 1 and the flame | frame 9 will flow out of the flame | frame 9 from the drain hole 18 provided in the lower side rising part 7c.

Further, even if the ventilation device 50 is installed on the ceiling by mistake, as shown in FIG. 8, since the drain hole 18 is provided in the flange portion 9a of the frame 9, the vicinity of the power cord outlet 15 and the lead of the motor lead wire are drawn. Water flows from a drain hole 18 provided near the mouth 19. Therefore, even when water enters the frame 9, water accumulates in the frame 9, and water entry into the electrical box 8 is prevented.

Further, the drain hole 18 is formed by a square hole of 4 mm or more or a round hole of 4 mm or more in diameter. In this way, water is discharged without being affected by the surface tension of water, so that water is reliably discharged from the frame 9. When the edge of the drain hole 18 is cut into the R plane or the C plane, water is discharged more effectively.

Thus, according to the ventilator of Embodiment 1 of the present invention, the small electrical box 8 prevents water from entering and ensures insulation performance. Further, even if deformation or the like occurs at the time of molding a component, water can be reliably prevented from entering.

Moreover, the infiltration of water through the power cord 17 is prevented. When the installer makes a mistake in the wiring of the power cord 17, the construction is easily noticed so that water does not enter the electrical box 8 due to a construction error.

Also, when high-humidity air adheres to the vicinity of the power cord outlet 15, it can be discharged outside without water adhering to the charging part inside the electrical box 8. Further, the water that has entered from between the wall 1 and the frame 9 flows out of the frame 9 through the drain hole 18.

(Embodiment 2)
In the second embodiment of the present invention, the same components as those in the first embodiment are denoted by the same reference numerals, detailed description thereof will be omitted, and only different points will be described. FIG. 10 is a vertical cross-sectional view parallel to the air blowing direction of the terminal block portion of the electrical equipment box of the ventilation device according to the second embodiment of the present invention. As shown in FIG. 10, the first rib 20 is provided on the bottom surface 8 d of the electrical box case 8 a, and the power connection terminal 12 is installed on the first rib 20. Furthermore, the 2nd rib 21 which partitions off between the different polarity terminals of the power supply connection terminal 12 is provided.

FIG. 11 is an exploded perspective view showing an electrical box of the ventilation device according to the second embodiment of the present invention. As shown in FIG. 11, the power connection terminal 12 has the power connection terminal 12 fixed and the power cord connection side is inclined upward, that is, the terminal installation base 22 with the power cord connection side close to the electrical box cover 8b side. It is connected to the. The terminal installation base 22 provided in the electrical box case 8 a is provided with a third rib 23 that partitions the different polarity terminals of the power connection terminal 12.

FIG. 12 is a horizontal sectional view of the terminal block portion of the electrical equipment box of the ventilator according to the second embodiment of the present invention, and FIG. 13 is a perspective view showing the electrical equipment box of the ventilator. As shown in FIGS. 12 and 13, a thin portion 24 is provided in a portion of the electrical box cover 8 b that covers the power connection terminal 12. The thin portion 24 is provided so that the power cord connecting portion 25 of the power connecting terminal 12 is exposed and the electric box cover 8b can be opened and closed. That is, the electrical box cover 8b can be opened and closed with the thin portion 24 as a fulcrum.

The connection diagram 54 is stamped and displayed on the front or back surface of the open / close portion 8e of the electrical box cover 8b.

Also, the electrical box 8 and the terminal installation base 22 are formed of a resin material of UL flame retardancy standard UL94 V-0 or higher.

With the above configuration, the water adhering to the bottom surface 8d of the electrical box case 8a flows down without contacting the power connection terminal 12. Further, since water does not adhere so as to conduct between the different polarity terminals, water does not adhere to the power connection terminal 12 that is the charging part even when water enters the electrical box 8. Accordingly, the different polarity terminals are not short-circuited by water.

Further, by lifting the terminal installation base 22 upward, the power supply worker can insert and connect the power cord 17 to the power connection terminal 12 while confirming the power cord connecting portion 25, and the workability is improved.

Also, since water does not adhere so as to conduct between the different polarity terminals, safety is improved. When the power cord 17 is connected, only the power cord connecting portion 25 of the electrical box cover 8b is opened and connected. Therefore, since it has a structure in which only the part necessary for power supply connection is not touched, other electric parts are not accidentally damaged during power supply construction. Since the front surface of the electrical box cover 8b is connected by the thin portion 24, water does not enter. Moreover, since it is an integral part, there is no loss of parts.

Also, since the connection diagram 54 is displayed in the vicinity of the power cord connecting portion 25, the connection is confirmed while the power cord 17 is being connected. The connection diagram 54 is not a seal but is stamped, so that the display does not peel off or disappear even when used in a high humidity space in the bathroom. Furthermore, since it is engraved, it can be displayed inexpensively.

Also, since the parts that hold or cover the charging part are made of a resin material of UL flame retardant standard UL94 V-0 or higher, even if smoke or ignition occurs in the charging part, it does not spread outside the electrical box 8.

Thus, according to the ventilator of the second embodiment of the present invention, safety can be ensured even when water enters the electrical box 8. The power cord connecting portion 25 is confirmed during electrical work, and the connection diagram 54 displayed in the vicinity is confirmed, so that workability is good. And other electrical parts are not accidentally damaged, and even if smoke or ignition occurs in the charging part, it does not spread.

In the embodiment of the present invention, the case where the ventilation device 50 is provided on the wall 1 has been described, but the ventilation device 50 may be provided on the ceiling.

As described above, the ventilator according to the present invention can be used for electrical equipment attached to the inner wall surface facing the outside air.

DESCRIPTION OF SYMBOLS 1 Wall part 2,103 Wind tunnel pipe 3,104 Fan 4,105 Motor 5,106

Cylindrical part

6a, 107 Indoor side opening 6b

Outdoor side opening

7a, 108 Flange part 7b Upper side rising part 7c Lower side rising part 8 Electrical box 8a Electrical box case 8b Electrical box cover 8c End 8d Bottom 8e Opening / closing part 9 Frame 10 Motor case 11

Motor cover

12, 112 Power connection terminal 13 Power cord fixing part 14 Guide rib 15 Power cord outlet 16 Power cord outlet 17 Power cord 18 Water 18 Hole 19 Motor lead wire inlet 20 First rib 21 Second rib 22 Terminal installation base 23 Third rib 24 Thin wall portion 25 Power cord connection portion 26 Protective flange 27 Boss portion 28 Motor shaft 28a Outlet portion 50 Ventilation device 51 Louver 52 First fitting portion 53 Second fitting portion 54 Connection diagram 101 Indoor 102 Ceiling 109 Standing portion 110 Electrical component 111 Body frame

Claims

A wind tunnel pipe provided in the wall so as to communicate the indoor side opening and the outdoor side opening;
A cylindrical part mounted on the wind tunnel pipe and provided with a fan and a motor inside,
A louver provided in the indoor opening;
A flange portion formed continuously to the cylindrical portion in a rectangular shape in a direction orthogonal to the motor shaft of the motor on the outer periphery of the indoor side opening of the cylindrical portion;
From the flange portion toward the wall portion, an upper rising portion and a lower rising portion are formed, respectively, and the frame configured by the flange portion and the upper rising portion,
An electrical box housed in the frame,
In the ventilating device, wherein the electrical box is composed of an electrical box case having a power connection terminal and a power cord fixing part, and an electrical box cover that covers the electrical box case,
A first fitting portion that fits the electrical box case and the electrical box cover, and a motor case that is formed integrally with the cylindrical portion and houses the motor, and a motor cover that protects the motor are fitted. A ventilator characterized in that the second fitting portion has a stepped shape.
The ventilator according to claim 1, wherein an end portion of the electrical box cover is located on the flange portion side beyond a bottom surface of the electrical box case.
The ventilation apparatus according to claim 2, wherein the electrical box cover is formed so as to cover a part of the bottom surface along the bottom surface.
The ventilation apparatus according to claim 2, wherein a guide rib formed below the power cord outlet is provided in the flange portion in the vicinity of the power cord outlet of the electrical box.
The ventilation apparatus according to claim 4, wherein a height of the guide rib from the flange portion is the same as a length of the upper rising portion.
The ventilation apparatus according to claim 4, wherein the power cord outlet is provided obliquely downward in the vertical direction.
The ventilator according to claim 4, wherein a drain hole is provided in the lower rising portion, in the vicinity of the power cord outlet, and in the vicinity of the motor lead wire inlet provided in the electrical box case.
The first rib is provided on the bottom surface, the power connection terminal is installed on the first rib, and a second rib for partitioning between the different polarity terminals of the power connection terminal is provided. Ventilation device.
The ventilation apparatus according to claim 1, wherein a terminal installation base for fixing the power connection terminal and tilting the power connection terminal is provided in the electrical box case.
The ventilation apparatus according to claim 9, wherein a third rib for partitioning between the different polarity terminals of the power connection terminal is provided on the terminal installation base.
The ventilator according to claim 1, wherein a thin portion is provided in a portion of the electric box cover that covers the power connection terminal, and the electric box cover can be opened and closed with the thin portion as a fulcrum.
The ventilation apparatus according to claim 11, wherein a connection diagram is stamped and displayed on an opening / closing part of the electrical box cover.
The ventilator according to claim 1, wherein the electrical box is made of a resin material of UL flame retardancy standard UL94 V-0 or higher.
The ventilator according to claim 10, wherein the terminal installation base is made of a resin material of UL flame retardant standard UL94 V-0 or higher.
The motor shaft extending from the motor is provided with a protective flange having a cylindrical motor case at an outlet portion from the motor, and the boss portion of the fan is inserted so as to overlap the protective flange. The ventilator according to 1.