JPH08261529A - Ventilating apparatus and ventilating fan for bathroom - Google Patents

Abstract

PURPOSE: To provide a ventilating apparatus and a ventilating fan for a bathroom capable of shortening the time required for drying the whole bathroom without increasing consumed power. CONSTITUTION: Air is taken from a ventilating opening having a louver provided at a lower part of a door provided at an inlet from a dressing room to a bathroom, and air is exhausted from a fan 7 provided on a ceiling of the bathroom corresponding to a substantially oblique angle with the ventilating opening. Part of exhaust taken into the fan 7 is blown off through a branch passage 25 provided on the downward side of the fan 7 from a gap consisted of an outer case 11 for supporting and accomodating a fan case 34 in which the fan 7 is provided and of a grill plate 14 located at the lower part of the outer case 11, and is directed to flow along a ceiling surface 18 from an outlet 16 to the bathroom side with the aid of the grill plate 14 as a guide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device and a ventilation fan used to ventilate a bathroom and a dressing room adjacent to the bathroom.

[0002]

2. Description of the Prior Art FIG. 5 illustrates a typical prior art ventilation system (60).
It is a simplified cross-sectional view for explaining. Dressing room (41)
From the bottom of the door (43) provided at the entrance to the bathroom (42) from the
The opening (4
5) is installed and a fan (46) is installed, and air is supplied from the ventilation opening (44) under the door (43) as shown by an arrow (51), and is supplied by the fan (46) with an arrow (52). Exhaust is performed as shown. Also, in the direction connecting the fan (46) and the dressing room (41),
In addition, a bathtub (58) is provided on the wall side where the fan (46) is provided. This fan (46) is generally of a timer type, and normally turns off in 90 minutes.

FIG. 6 is a plan view of the bathroom (42) of FIG. 5 as seen from above. For each value, the shower fan is sprinkled in the bathroom, and the ventilation fan is activated at the time of 30 minutes after the start of the sprinkling of water. As a result of measuring the humidity and the like after that, the time required for drying at the measured measurement point (•) and the time required to reduce the humidity to 95% are shown. The numbers at the top of each of the measurement points are
It is the time (minutes) required for drying, and the number shown at the bottom is the time (minutes) for reducing the humidity to 95%. As shown in the figure, among the measurement points in the bathroom (42), it takes a long time for the ceiling side to dry, especially for the diagonal line connecting the ventilation port (44) of the door (43) and the fan (46). Measurement point (53) on the ceiling and at the corner of the fan (46) side in the diagonal direction that intersects
However, the most time is required for drying, and in this case, the time required for drying is 172 minutes, and the 90-minute timer causes dew to remain without drying. In addition, the time required for drying at the measuring points of (55) and (56) exceeds 90 minutes, and the 90-minute timer cannot dry completely. As described above, in the portion where the dew condensation cannot be completely dried and remains, the dew condensation water becomes dust, and mold is generated as a nutrient.

FIG. 7 is a simplified cross-sectional view illustrating another typical prior art ventilation device (70).
This prior art is similar to the above-mentioned prior art except that the ventilation opening in the lower part of the door (43) is closed,
There are two fans (47) (4) for exhaust and air supply in the opening (45).
8) is provided, and the air supply fan (48) introduced from the outside
This is the point that the air supply from the room is made to flow along the ceiling surface (49) as shown by the arrow (54) .In this way, by introducing the outside air effective for drying, It eliminates the shortage of ventilation air and the delay of drying speed due to lack of air.

[0005]

As described above, in the 90-minute timer, there are some areas that cannot be completely dried, and the countermeasure is to increase the flow rate or increase the timer time to about 170 minutes. However, this increases power consumption and
There is a problem that the electricity bill becomes high.

The two fans (47) and (48) are attached to the opening (45) because the ventilation opening (44) on the side of the door (43) is closed so that ventilation can be performed on the side of the dressing room (41). Instead, two fans (47) (48) are provided, resulting in increased cost, large power consumption, and low outside air in winter, so the bathroom (42)
Since it is heavier than the inside air, it is difficult to get down from the ceiling surface (4
There is a problem that it becomes difficult to flow along 9).

Therefore, an object of the present invention is to provide a ventilation device and a ventilation fan for a bathroom which can shorten the drying time of the entire bathroom without increasing the power consumption.

[0008]

DISCLOSURE OF THE INVENTION The present invention provides a ventilation system in which a ventilation fan for exhaust is provided in a ventilation opening of a bathroom.
A ventilating device for a bathroom, characterized in that an exhaust gas recirculation mechanism is provided, which recirculates a part of the exhaust air taken in by the ventilation fan into the bathroom and flows along the ceiling surface.

Further, according to the present invention, an air supply port is provided at a door at an entrance of the bathroom and a room adjacent to the bathroom, and the ventilation opening is located at a position substantially diagonal to the air supply port. It is characterized by being arranged in.

Further, according to the present invention, in the recirculation mechanism, the recirculated exhaust gas is supplied to a bathroom and a room provided with an air supply port adjacent thereto in response to a ventilation flow flowing from the air supply port toward the ventilation fan. It is characterized in that it flows toward the corner of the bathroom on the side of the partition wall in the direction intersecting with the ventilation flow.

Further, the present invention is characterized in that the room provided with the air supply port adjacent to the bathroom is a dressing room.

Further, the present invention is a ventilation fan for a bathroom, characterized in that a branch port for circulating a part of the exhaust air to the indoor side is provided on the downstream side of the fan for sucking and discharging the air in the bathroom. .

Further, the present invention is characterized in that the outlet in the bathroom of the exhaust gas circulating from the branch opening is directed in a direction along the ceiling surface of the bathroom.

[0014]

According to the present invention, an exhaust ventilation fan is provided in the ventilation opening of the bathroom, and a part of the exhaust gas sucked by the ventilation fan is circulated into the bathroom by the exhaust gas recirculation mechanism.
Make sure to flush along the ceiling. In this way, the exhaust fan exhausts the exhaust air so that it can be supplied to the inside of the bathroom, and it flows along the ceiling surface as a forced circulation, so it is possible to dry the ceiling surface side, which took time to dry, quickly. it can.

Further, according to the present invention, the air is taken in from the air supply port provided in the door at the entrance of the bathroom and the room adjacent to the bathroom, and the position is substantially diagonal to the air supply port. Exhaust is performed from the ventilation ventilation port arranged in the room to ventilate the adjacent room and the bathroom.

Further, according to the present invention, the exhaust gas that has been recirculated with respect to the ventilation flow flowing from the air supply port toward the ventilation fan is provided by the recirculation mechanism in the room provided with the bathroom and the air supply port adjacent thereto. It is made to flow toward the corner of the bathroom on the side of the partition wall which intersects with the ventilation flow. In this way, since it is made to flow in one direction, which is the most difficult to dry, it is possible to more effectively dry the part that required time to dry.

Further according to the invention, the room adjacent to the bathroom and provided with the air supply port is a dressing room.

Further, according to the invention, a branch port is provided on the downstream side of the fan for sucking and discharging the air in the bathroom, and a part of the exhaust gas discharged from the fan is circulated from the branch port to the indoor side. Let

Further, according to the invention, since the outlet of the exhaust gas circulating from the branch port into the bathroom is directed in the direction along the ceiling surface of the bathroom, a part of the exhaust gas passes through the branch port. , Shed along the ceiling in the bathroom.

[0020]

1 is a simplified cross-sectional view for explaining a ventilator (20) according to an embodiment of the present invention. At the lower part of the door (3) provided at the entrance from the dressing room (1) to the bathroom (2), there is a ventilation opening (4) with a louver.
A ventilation fan (5) is attached to the ceiling of the bathroom (2), which is substantially diagonal to (4). Further, a bathtub (35) is provided in the direction connecting the ventilation fan (5) and the undressing room (1) and on the wall side where the ventilation fan (5) is provided.

FIG. 2 is a simplified enlarged sectional view for explaining the ventilation fan (5). The ventilation fan (5) uses a fan (7) called, for example, a sirocco fan, and this fan (7) has a fan case having an exhaust pipe (10).
It is housed and supported by (34), and takes in exhaust gas from the axial direction and flows it in the outer peripheral direction. The fan case (34) is provided with a branch port (8) on the downstream side of the fan (7), and a part of the exhaust gas is made to flow inside the bathroom (2) by a guide (9). The fan case (34) is supported and housed in a box-shaped outer case (11) having an opening in the lower part in a state where the exhaust pipe (10) is projected to the outside, and the fan case (34) is provided on the upstream side of the fan (7). One end of an intake pipe (13) is fixed to the outer peripheral end portion forming the air vent (12), and the grill plate (14) is attached to the other end of the intake pipe (13). It is fixed in a state where the hollow portion of the intake pipe (13) is matched with the mesh portion (15) provided in the portion (14). At this time, a gap is formed between the grill plate (14) and the outer case (11). In this way, a space (17) formed between the outer case (11) and the periphery of the fan case (34) is used as a chamber to create a blown airflow from the gap. Also, the grill plate (14)
Also serves as a guide for causing the blown airflow to flow along the ceiling surface (18) in the bathroom (2). By this grill plate (14), the outlet (16) of the exhaust gas circulating from the branch opening (8) into the bathroom (2) is directed along the ceiling surface (18) of the bathroom (2).

With such a structure, as shown by the arrow (19) from the ventilation port (4) of the door (3), the supply air is taken in, and the exhaust air in the bathroom (2) is indicated by the arrow (21). As shown in, formed by the intake pipe (13) from the net part (15) which is the intake port
It is taken into the fan (7) after passing through the air supply passage (22), and as shown by the arrow (23), the exhaust pipe (1) of the fan case (34).
(0) and part of the exhaust gas is
As shown in 4), the grill plate (14) passes through the branch passage (25) formed by the branch opening (8) and the guide (9).
Using the guide as a guide, it is made to flow from the exit (16) along the ceiling surface (18) as indicated by the arrow (26).

FIG. 4 is a plan view of the bathroom (2) of FIG. 1 as seen from above, and shows an experimental result of performing ventilation using the above-mentioned ventilation device (20). Each value sprinkles a shower in the bathroom,
As a result of operating the ventilation fan 30 minutes after the start of the hot water sprinkling and measuring the humidity after that, the time required for drying at the measured measurement point (•) and the time for reducing the humidity to 95% are shown. At each of the measurement points, the number shown on the upper side is the time (minutes) required for drying, and the number shown on the lower side is the time (minutes) for reducing the humidity to 95%.

FIG. 3 shows that the air flow passing through the branch passage (25) is
3 indicated by arrows (27) (28) (29) toward the corner on the ceiling side
It is the result of measurement so that it blows out in the direction. Comparing this result with FIG. 6, a part of the exhaust gas flows along the ceiling surface (18) inside the bathroom (2), which is difficult to dry, so that the time required for drying on the ceiling surface (18) side is extremely high. It turns out that it is shortened to. Further, in this case, the time required for drying the intermediate portion in the bathroom (2) becomes slightly longer, and the time required for drying the measuring point (31) slightly exceeds 90 minutes. The entire bathroom (2) can be almost dried with a 90-minute timer.

Further, FIG. 4 shows that the airflow passing through the branch passage (25) is the most dry arrow (30) along the ceiling surface (18).
It is the result measured by blowing out in one direction. The most dry direction is the door (3)
Is a corner portion on the side of the ventilation fan (5) in a diagonal direction crossing a diagonal line connecting the ventilation port (4) and the ventilation fan (5), and is a direction toward the ceiling portion (32). As can be seen from this result, the time required for drying at each measurement point is made uniform throughout, and if a 90-minute timer is used, it is possible to sufficiently dry the whole, and a more preferable result than the result of FIG. 3 described above is obtained. Was obtained.

[0026]

As described above, according to the present invention, a part of the exhaust gas taken in by the ventilation fan is recirculated into the bathroom by the exhaust gas recirculation mechanism, and flows along the ceiling surface. As a result, the ceiling surface side, which is difficult to dry, becomes easier to dry, and it is possible to uniformly dry the inside of the bathroom by eliminating the extremely difficult places to dry in the bathroom. The time can be shortened.

Therefore, the drying time of the entire bathroom can be shortened without increasing the power consumption by lengthening the timer time of the ventilation fan or increasing the flow rate, thus saving the electricity bill. Can be achieved.

Further, it is preferable that air is taken in from an air supply port provided at a door at the entrance of the bathroom and a room adjacent to the bathroom, and the air is arranged in a position substantially diagonal to the air supply port. Exhaust is carried out from the ventilation opening provided for ventilation, and a part of this exhaust is provided by the circulation mechanism to the ventilation flow flowing from the air supply opening toward the ventilation fan in the bathroom and the adjacent air supply opening. It is made to flow toward the corner of the bathroom on the side of the partition wall from the separated room, which intersects with the ventilation flow. In this way, since it is flown in one direction that is the most difficult to dry, the bathroom can be dried more uniformly and efficiency is improved, and the time required for drying the entire bathroom can be further shortened. . Further, since the air supply port is provided in the room adjacent to the bathroom, for example, the dressing room, the adjacent room can be dried.

Further, in the present invention, since only one fan is required, the manufacturing cost can be reduced and the electricity bill can be saved. Furthermore, since a part of the exhaust flows toward the indoor side,
It is not heavier than the air on the indoor side, and part of the exhaust gas can smoothly flow along the ceiling surface.

Further, according to the present invention, a simple ventilation fan structure is provided in which a branch port for circulating a part of exhaust gas to the inside of the bathroom is provided on the downstream side of the fan. Can be realized and the manufacturing cost can be reduced.

Further, according to the present invention, the structure of the ventilation fan is such that the outlet of the exhaust gas circulating from the branch port in the bathroom is directed along the bathroom ceiling surface, and the exhaust gas circulating from the branch port is directed to the ceiling surface. It is possible to realize the flow along the direction, and the manufacturing cost is reduced.

[Brief description of drawings]

FIG. 1 is a simplified cross-sectional view illustrating a ventilation device (20) according to an exemplary embodiment of the present invention.

FIG. 2 is a simplified enlarged sectional view for explaining a ventilation fan (5).

FIG. 3 is a plan view of the bathroom (2) of FIG. 1 seen from above.

FIG. 4 is a plan view of the bathroom (2) of FIG. 1 viewed from above.

FIG. 5 is a simplified cross-sectional view illustrating a typical prior art ventilation system (60).

FIG. 6 is a plan view of the bathroom (42) of FIG. 5 viewed from above.

FIG. 7 is a simplified cross-sectional view illustrating another exemplary prior art ventilation system (70).

[Explanation of symbols]

 (1) Dressing room (2) Bathroom (4) Ventilation port (5) Ventilation fan (7) Fan (10) Exhaust pipe (16) Exit (20) Ventilation device (25) Branch passage

Claims (6)

[Claims] 1. A ventilator having a ventilation fan for exhaust in an opening for ventilation of a bathroom, wherein a part of the exhaust gas sucked by the ventilation fan is circulated into the bathroom and is circulated along a ceiling surface. A bathroom ventilation device characterized by being provided with a mechanism. 2. An air supply port is provided at a door at an entrance of a bathroom and a room adjacent to the bathroom, and the ventilation opening is arranged at a position substantially diagonal to the air supply port. The ventilation device for a bathroom according to claim 1, wherein the ventilation device is provided. 3. The recirculation mechanism, in response to a ventilation flow flowing from the air supply port toward the ventilation fan, sends the recirculated exhaust gas to a partition wall side of a bathroom and a room adjacent to the bathroom in which the air supply port is provided. The bathroom ventilator according to claim 1 or 2, wherein the bathroom vent is directed toward a corner in a direction intersecting with the ventilation flow. 4. The ventilation device for a bathroom according to claim 2, wherein the room adjacent to the bathroom and provided with an air supply port is a dressing room. 5. A ventilation fan for a bathroom, characterized in that a branch port is provided on the downstream side of a fan that sucks and discharges the air in the bathroom, and a branch port that circulates a part of the exhaust air to the indoor side. 6. The ventilation fan according to claim 5, wherein an outlet in the bathroom of the exhaust gas recirculating from the branch opening is directed in a direction along the bathroom ceiling surface.