JPH11294841A - Air supply/exhaust grill for bathroom heating, ventilating, and drying unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the rise of pressure loss caused by deflection of the direction of air supply, by making the shape of the cross section of the bottom of the downstream side of the intake air duct which forms a smooth air duct face in contact with the upstream face of the intake air duct a part of the circular arc. SOLUTION: For the bottom 1 of the downstream side of an air supply duct 104 connected with the upstream side of an air supply duct 104, the sectional form forms a circular arc face 2 and an adhesive face 3 being a part of the circular arc. The center of the circular arc of the cross section of the circular arc 2 lies on a straight line which connects the upstream ends of upper and lower louvers 105, and the radius of the circular arc of the circular arc face is equal to the pitch between the upper and lower louvers 105. As a result, the air being deflected downward by the upper and lower louvers 105 passes the circular arc face 2 of the bottom face 1. The supply air current 5 produces a negative pressure region 4 between itself and the adhesive face 3 lying at the downstream side of the air supply duct 104. The supply air current 5 deflects downward, being drawn by the negative pressure region 4, so it can suppress the flexion of the air current by the upper and lower louvers 105, and can suppress the rise of pressure loss.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply / exhaust grill for a bathroom heating / ventilation / drying unit used for heating, ventilating and drying a bathroom and drying laundry.

[0002]

2. Description of the Related Art Heretofore, this kind of supply / exhaust grill for a bathroom heating / ventilation / drying unit generally has a construction shown in FIGS.

The air supply / exhaust grill for the bathroom heating / ventilation / drying unit will be described below with reference to the drawings.

[0004] As shown in the figure, an air supply / exhaust grill 101 of a supply / exhaust grill for a bathroom heating / ventilation / drying unit is installed on a wall of a bathroom 102 having a through-hole. At the lower part of the road 103, the air supply passage 10
4 is provided, and an upper and lower louver 105 for deflecting air supply vertically in the downstream of the air supply passage 104 and a left and right louver 106 for deflecting air supply left and right are provided upstream of the upper and lower louvers 105 in the air supply passage 104. ing. Air supplied from a bathroom heating ventilation drying unit (not shown) installed outdoors,
The air passes through the air supply passage 104, is deflected by the left and right louvers 106 and the upper and lower louvers 105, and blows out to the bathroom 102.

[0005]

In such a conventional air supply / exhaust grill for a bathroom heating / ventilation / drying unit, the louver is lowered downward so as to reach the optimum air supply direction for each operation mode, particularly to reach the floor surface during heating. When set, there is a problem that the direction of the airflow is sharply bent and the pressure loss increases.
It is required to suppress an increase in pressure loss caused by deflecting the air supply direction.

[0006] Further, if the supply air flow exceeds the maximum drift angle, it flows digitally along the attachment surface, so that there is a problem that the angle from the maximum drift angle to the attachment state cannot be adjusted. It is required to adjust the maximum drift angle of the airflow.

The operation mode of the bathroom heating / ventilation / drying unit is changed depending on the purpose of use. However, in the ventilation mode, there is a problem that an air supply direction that does not give a bather a sense of airflow cannot be obtained automatically. It is sometimes required to automatically obtain a supply direction that does not give a bather a sense of airflow by detecting the supply air temperature.

In addition, since the air supply direction is not automatically changed even when the operation mode is changed, the air supply direction is directed upward during the heating operation, so that only the upper part of the bathroom is warmed up, and the place where a person is present is not easily warmed up. It is required to automatically obtain an air supply direction suitable for each mode.

Another problem is that the installation position of the left and right deflecting means is not automatically set, and it is required that the installation position of the left and right deflecting means be automatically set according to the distance to the left and right walls.

Further, there is a problem that the drying time is long in the clothes drying mode, and an object of the present invention is to provide a supply / exhaust grill for a bathroom heating / ventilation / drying unit capable of shortening the drying time.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, a supply / exhaust grill for a bathroom heating / ventilation / drying unit according to the present invention has a suction air passage, a supply air passage, and a vertically extending air supply passage inside the supply air passage. An up-down deflecting unit for deflecting the air supply, wherein a bottom cross-sectional shape of the lowermost stream of the air supply path that forms a smooth air path surface in contact with the upstream surface of the air supply path is a part of an arc; Is located on an extended straight line connecting the upstream ends of the vertical deflecting means, and the downstream end face of the vertical deflecting means is a quarter of the arc at a position parallel to the upstream air path surface of the supply air path. The radius r of the circular arc is equal to the pitch P of the vertical deflecting means, disposed on the tangent to the downstream side surface of one circle or downstream of the tangent.

According to the present invention, there is provided a supply / exhaust grill for a bathroom heating / ventilation / drying unit capable of suppressing an increase in pressure loss caused by deflecting the air supply direction.

Another means is to provide a flat convex portion on the downstream side of the curved surface at the outlet end.

According to the present invention, a supply / exhaust grill for a bathroom heating / ventilation / drying unit capable of adjusting the maximum deviation angle of the supply air flow is obtained.

The other means is provided with a driving means for detecting the temperature and driving the vertical deflecting means.

According to the present invention, there is provided a supply / exhaust grill for a bathroom heating / ventilation / drying unit capable of automatically obtaining an air supply direction which does not give a feeling of airflow to a bather in a ventilation mode by detecting an air supply temperature. Can be

Another means is provided with a driving means for driving the vertical deflecting means and a control means for controlling the installation angle of the vertical deflecting means to an angle suitable for each mode.

According to the present invention, a supply / exhaust grill for a bathroom heating / ventilation / drying unit which can automatically obtain an air supply direction suitable for each mode is obtained.

The other means includes a left / right deflecting means for deflecting the air supply to the left and right upstream of the up / down deflecting means in the air supply passage, a distance detecting means for detecting a distance to the left and right walls, and a left / right deflecting means. And a control means for calculating the left / right distance from the left / right drive means and the detection signal and controlling the left / right drive means.

According to the present invention, there is provided a supply / exhaust grill for a bathroom heating / ventilation / drying unit in which the installation position of the left / right deflecting means can be automatically set according to the distance to the left and right walls.

Another means is provided with a swing driving means for swing-driving the deflecting means.

According to the present invention, a supply / exhaust grill for a bathroom heating / ventilation / drying unit which can shorten the drying time can be obtained.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides an intake air path, an air supply air path, and up-down deflecting means for vertically deflecting air supply downstream of the air supply path, and an upstream surface of the air supply path. A bottom cross-sectional shape of the lowermost stream of the air supply air path that forms a smooth air path surface in contact with a part of a circular arc, and the center of the circular arc is an extended straight line connecting the respective upstream ends of the vertical deflecting means. And a downstream end face of the vertical deflecting means is disposed on a tangent line on a downstream side surface of a quarter circle of the arc or downstream of the tangent line at a position parallel to an upstream air path surface of the air supply air path. The radius r of the circular arc is equal to the pitch P of the vertical deflecting means, and the deflection device is used as a trigger to form a negative pressure region at the most downstream portion of the air supply passage to deflect by the Coanda effect. As a result, sudden bending of the airflow by the deflecting device is suppressed and pressure loss It has the effect of suppressing rise in.

Further, a flat convex portion is provided on the downstream side of the curved surface at the outlet end portion over the entire width of the air passage, and the step of the air supply outlet causes separation of the supply air flow, and the maximum of the supply air flow is generated. The drift angle can be adjusted.

Further, a driving means for detecting the temperature and driving the vertical deflecting means is provided. When the supply air temperature is detected and the supply air temperature is normal temperature, the supply air is supplied along the wall. By driving and deflecting the vertical deflecting means so as to be in the air direction, it is possible to automatically obtain an air supply direction that does not give a bather a sense of air flow.

Further, a driving means for driving the vertical deflecting means and a control means for controlling the installation angle of the vertical deflecting means to an angle suitable for each mode are provided. In the ventilation and bathroom drying modes, the vertical deflecting means is controlled by the control means so that the air blows obliquely downward, in the ventilation and bathroom drying mode, it flows through the wall of the bathroom, and in the clothes drying mode, it blows horizontally. It can be driven by means.

Further, right and left deflecting means for deflecting the air supply right and left upstream of the vertical deflecting means in the air supply passage, distance detecting means for detecting the distance to the left and right walls, and left and right driving means for driving the left and right deflecting means are provided. Control means for calculating the left and right distances from the detection signal and controlling the left and right driving means is provided. The distance to the left and right walls is detected by the distance detection means, and the detected distance is obliquely blown in a long direction. The installation position of the left and right deflecting means is controlled and driven by a driving device so as to project.

Further, a swing driving means for swing-driving the deflecting means is provided, and has an effect that the air supply direction is swung so that the air supply is uniformly applied to the laundry and the drying time can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and detailed description is omitted.

[0030]

(Embodiment 1) As shown in FIGS. 1 and 2,
The bottom surface 1 at the most downstream side of the air supply passage 104, which is smoothly connected to the upstream side of the air supply passage 104, has an arc surface 2 whose sectional shape is a part of an arc, and an attachment surface 3 whose opening is smoothly enlarged. Is formed. The arc center of the cross section of the arc surface 2 is on a straight line connecting the upstream ends of the upper and lower louvers 105,
The arc radius r of the arc surface 2 is equal to the pitch P of the upper and lower louvers.

In the above configuration, the air deflected downward by the upper and lower louvers 105 passes through the arc surface 2 of the bottom surface 1. The supply air flow 5 creates a negative pressure region 4 between the supply air flow 5 and the attachment surface 3 located at the most downstream portion of the supply air passage 104. Since the supply air flow 5 is further deflected downward by being attracted to the adhesion surface 3 by the negative pressure region 4 (Coanda effect), the upper and lower louvers 1
05 can be reduced, that is, sharp bending of the airflow by the upper and lower louvers 105 can be suppressed, and an increase in pressure loss can be suppressed.

In the embodiment, the left and right louvers are arranged upstream of the upper and lower louvers. However, the left and right louvers may be installed downstream of the upper and lower louvers, so that there is no difference in the operation and effect.

Also, although the upper and lower louvers and the left and right louvers are provided, even if only the upper and lower louvers are provided, there is no difference in the operation and effect.

Although a flat plate louver is used as the deflecting means, a louver having a cross-sectional shape such as a blade, an arc, or a part of an ellipse may be used instead of a flat plate as long as it can deflect. Does not occur.

Although a part of an arc is used for the cross-sectional shape of the curved surface, any shape may be used as long as a negative pressure region is formed between the supply airflow deflected by the upper and lower louvers and the most downstream portion of the supply air passage. For example, a part of an elliptical arc or a part of a parabola may be used.

(Embodiment 2) As shown in FIG. 3, a planar projection 6 is provided on the downstream side of the attachment surface 3 formed at the outlet end.

In the above configuration, the supply airflow 5 collides with the step 7 which is the end face of the projection 6 and separates from the bottom face 1.
The supply air flow 5 creates a negative pressure region 4 between the supply surface and the attachment surface 3 located at the most downstream portion of the supply air passage 104, and the supply air flow 5 is attracted to the attachment surface 3 by the negative pressure region 4. Since the supply airflow 5 has separated, it is less likely to be attracted to the negative pressure region 4 than when no separation occurs. Therefore, the degree of separation can be adjusted by adjusting the height of the convex portion 6 to adjust the maximum drift angle of the supply airflow 5.

(Embodiment 3) As shown in FIG. 4, an expansion and contraction device 9 formed of a material which is deformed in accordance with temperature, for example, a shape memory alloy, expands at normal temperature, and has a high temperature like air supply during heating. Shrink when. The expansion / contraction device 9 is connected to the upper and lower louvers 105 and installed in the air supply passage 104.

In the above configuration, in the ventilation mode, the supply air temperature that has passed through the supply air passage 104 is at a normal temperature, and the expansion and contraction device 9 is extended, and the upper and lower louvers 105 are pushed downward, so that the upper and lower louvers 105 are directed downward. , And the supply air is blown downward. The blown air adheres to the lower part of the surface of the air supply / exhaust grill 101 for the bathroom heating / ventilation / drying unit.
01 is attached to the wall to which it is attached and flows.

In this embodiment, the shape memory alloy is used for the expansion and contraction device. However, other materials may be deformed in accordance with the temperature, and there is no difference in operation and effect.

(Embodiment 4) As shown in FIGS.
The vertical louver 105 is connected to the vertical louver motor 10 and the vertical controller 11.

In the above configuration, it is well known that in order to heat efficiently in the heating mode, it is better to set the angle so as to blow obliquely downward. Therefore, the upper and lower louvers 105 are blown out in advance so as to blow obliquely downward. It is driven by the vertical louver motor 10 controlled by the vertical controller 11 at the set angle. FIG. 7 shows an example of the relationship of the supply airflow 5 with respect to the installation angle of the upper and lower louvers 105. Similarly, the vertical louver 105 is controlled and driven by the vertical controller 11 and the vertical louver motor 10 at an angle such that it flows through the bathroom wall in the ventilation and bathroom drying mode, and at an angle such that it blows out horizontally in the clothes drying mode. be able to.

(Embodiment 5) As shown in FIGS.
A distance sensor 13a for detecting the distance to the left wall and a distance sensor 13b for detecting the distance to the right wall are provided on the outer frame of the supply / exhaust grill 101 for the bathroom heating / ventilation / drying unit. Louver motor 14
And a left / right controller 15 for calculating the left / right distance from the detection signals of the distance sensors 13a and 13b and controlling the left / right louver motor 14.

In the above configuration, the detection signal of the distance sensor 13a and the detection signal of the distance sensor 13b are calculated and compared by the left and right controllers 15 and when the distance A is large, the distance sensor 13b is installed. The left and right louver motors 14 are driven so as to blow diagonally forward on one side, and the installation positions of the left and right louvers 106 are adjusted. Conversely, distance B
Is large, the left and right louver motors 14 are driven so as to blow diagonally forward on the side where the distance sensor 13b is installed, and the installation positions of the left and right louvers 106 are adjusted.

(Embodiment 6) As shown in FIGS. 10 and 11, a swing drive device 16 for swinging the upper and lower louvers 105 is provided.

With the above configuration, the upper and lower louvers 105 are supplied by the swing driving device 16 in the direction of air supply. As shown in FIG. 12, the water content of the laundry decreases as the wind speed near the laundry increases. Therefore, since the drying time of the laundry can be shortened when the airflow hits the laundry sufficiently, it is better to use the swing blowout than when only blowing in one direction, and the airflow hits the laundry evenly and shorten the drying time. Can be.

Although the upper and lower louvers are swung by the swing driving device in the embodiment, the left and right louvers may be swung by the swing driving device.
There is no difference in the effects.

[0048]

As is apparent from the above embodiment, according to the present invention, the supply for the bathroom heating / ventilation / drying unit has the effect of suppressing an increase in pressure loss due to the deflection of the air supply direction. An exhaust grill can be provided.

Further, it is possible to provide a supply / exhaust grill for a bathroom heating / ventilation / drying unit which has an effect of adjusting the maximum deviation angle of the supply air flow.

Further, it is possible to provide a supply / exhaust grill for a bathroom heating / ventilation / drying unit which is capable of automatically obtaining an air supply direction that does not give a sense of airflow to a bather by detecting an air supply temperature in a ventilation mode.

Further, it is possible to provide a supply / exhaust grill for a bathroom heating / ventilation / drying unit which is capable of automatically obtaining an air supply direction suitable for each mode.

Further, it is possible to provide a supply / exhaust grill for a bathroom heating / ventilation / drying unit having an effect that the installation position of the left / right deflecting means can be automatically set in accordance with the distance to the left and right walls.

Further, it is possible to provide a supply / exhaust grill for a bathroom heating / ventilation / drying unit which has an effect of shortening a drying time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a supply / exhaust grill for a bathroom heating / ventilation / drying unit according to a first embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of an air supply / exhaust grill for the bathroom heating / ventilation / drying unit.

FIG. 3 is a schematic vertical cross-sectional view of a supply / exhaust grill for a bathroom heating / ventilation / drying unit according to the second embodiment.

FIG. 4 is a schematic vertical sectional view of a supply / exhaust grill for a bathroom heating / ventilation / drying unit according to the third embodiment.

FIG. 5 is a schematic horizontal sectional view of a supply / exhaust grill for a bathroom heating / ventilation / drying unit according to the fourth embodiment.

FIG. 6 is a schematic vertical sectional view showing the installation of a supply / exhaust grill for the bathroom heating / ventilation / drying unit.

FIG. 7 is a diagram showing the relationship between the louver installation angle and the blowout angle.

FIG. 8 is a view showing an installation / exhaust grill for a bathroom heating / ventilation / drying unit according to the fifth embodiment.

FIG. 9 is a schematic horizontal cross-sectional view of the air supply / exhaust grill for the bathroom heating / ventilation / drying unit.

FIG. 10 is a schematic horizontal sectional view of a supply / exhaust grill attached to a bathroom heating / ventilation / drying unit according to the sixth embodiment.

FIG. 11 is a schematic vertical cross-sectional view of a supply / exhaust grill for the bathroom heating / ventilation / drying unit.

FIG. 12 is a diagram showing a relationship between a wind speed near the laundry and a change in the moisture content of the laundry.

FIG. 13 is an installation / exhaust grill for a conventional bathroom heating / ventilation / drying unit.

FIG. 14 is a schematic vertical sectional view showing the installation of a supply / exhaust grill for the bathroom heating / ventilation / drying unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bottom 3 Adhesion surface 6 Convex part 9 Expansion device 10 Vertical louver motor 11 Vertical controller 13a, 13b Distance sensor 14 Left and right louver motor 15 Left and right controller 16 Swing drive device 101 Supply / exhaust grill for bathroom heating / ventilation / drying unit 103 Suction air passage 104 Air supply path 105 Upper and lower louvers 106 Left and right louvers

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI F24F 13/06 F24F 13/06 A 13/15 13/15 D

Claims (7)

[Claims] 1. An air supply path, an air supply path, and up-down deflecting means for deflecting air supply up and down inside and downstream of the air supply path, and the air supply path is provided smoothly over the entire width of the bottom surface of the air supply path. A supply / exhaust grill for a bathroom heating / ventilation / drying unit formed into a curved surface so as to form a negative pressure region between an airflow deflected by the up / down deflecting means and an airflow deflected by the vertical deflecting means by expanding an airflow path; . 2. An air supply path, which forms a smooth air path surface in contact with an upstream surface of the air supply path, has a bottom cross-sectional shape at the lowermost stream part of a circular arc, and the center of the circular arc is upstream of the vertical deflecting means. The downstream end face of the vertical deflecting means is tangent to the downstream side surface of a quarter circle of the arc at a position parallel to the upstream air path surface of the supply air path. Alternatively, it is arranged downstream of the tangent line and has a radius r of the arc.
2. The supply / exhaust grill for a bathroom heating / ventilation / drying unit according to claim 1, wherein the pitch is equal to the pitch P of the vertical deflecting means. 3. The supply / exhaust grill for a bathroom heating / ventilation / drying unit according to claim 1, wherein a flat convex portion is provided on the downstream side of the curved surface at the outlet end portion over the entire width of the air path. 4. A supply / exhaust grill for a bathroom heating / ventilation / drying unit according to claim 1, further comprising a driving means for detecting a temperature and driving the vertical deflection means. 5. A bathroom heating / ventilation / drying unit according to claim 1, further comprising a driving means for driving the vertical deflection means and a control means for controlling an installation angle of the vertical deflection means to an angle suitable for each mode. Supply and exhaust grille. 6. A left / right deflecting means for deflecting air supply to the left and right upstream of the up / down deflecting means in the air supply passage, a distance detecting means for detecting a distance to the left and right walls, and a left / right driving means for driving the left / right deflecting means. 5. A control means for calculating left and right distances from a detection signal and controlling said left and right driving means.
Or the supply / exhaust grill for the bathroom heating ventilation drying unit according to 5. 7. A swing driving means for swing-driving the deflecting means.
Supply / exhaust grill for bathroom heating ventilation drying unit as described.