JPH07294119A - Bath room ventilating/drying apparatus - Google Patents

Abstract

PURPOSE:To provide a bath room ventilating/drying apparatus having a simplified structure wherein no noise is existent and optimum distribution of the amounts of circulation air and exhaust air is simply ensured. CONSTITUTION:Wet air is circulated in a room from one discharge passage 3 and the wet air is directly exhausted to the outside from the other discharge passage 3. Since the discharge passages 3, 4 are provided on the same circumference of a casing 1 at a proper interval, distribution to the two passages is ensured without reducing the area of the passages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom ventilation dryer for drying clothes and the like.

[0002]

2. Description of the Related Art Traditionally, ventilation and drying equipment for bathrooms has 2 fans and 2
Motors were the mainstream. As shown in FIG. 3, this two-fan / two-motor has a mounting port 100 that opens on the ceiling wall b of the bathroom B.
The main body case 1 is attached to the main body case 1, and the main body case 1 is detachably covered with a cover 21 having a large number of long holes 21a, and the main body case 1 is divided into three chambers. Multi-blade blower 200 for circulation, equipped with 200-blade blower, multi-blade blower 300 dedicated to exhaust, and heater 42 in central chamber z.
And the multi-blade blower 300 dedicated to exhaust air are driven together to suck the air in the room containing moisture from the multi-blade blower 200, and the heater 42 heats it to raise the temperature to lower the relative humidity and circulate it in the room. Some of them are designed to exhaust to the outside from a multi-blade blower 300 dedicated to exhaust. 2 fans and 2 like this
The motor-type bathroom ventilation dryer requires two types of large and small multi-blade blowers 200, 300 that match the circulating air volume and exhaust air volume, and not only does the bath ventilation dryer become heavier.
It becomes large in size, and it is obliged to mount and fix it with a strong mounting means, or there are restrictions on the mounting location. Of course, there is also a problem that equipment costs rise because it is necessary to manufacture and prepare casings having different sizes, motors having different performances (capacity), and large and small fans.

[0003]

In order to solve such problems, a one-fan / one-motor bathroom ventilation drying device has already been proposed. In this bathroom ventilation drying apparatus, as shown in FIG. 4, two chambers 600 in which a casing 401 of a multi-blade blower 400 is arranged side by side in a direction orthogonal to a motor shaft 500,
Dividing into 700, a branch piece 900 that branches into circulation and ventilation in the middle boundary wall 800 is formed by bending from a slit to form an inlet port 801 to one discharge passage 6, and the other discharge passage 7 A heater 42 is installed in the air-conditioning chamber 42 to distribute the air containing the indoor moisture sucked from the intake port 401 of the multi-blade blower 400 into two flow paths, and exhaust one air flow from the discharge path 6 as it is,
The other air flow is heated by the heater 42 to lower the relative humidity and circulates from the discharge passage 7 into the room. However, in this one fan / one motor bathroom ventilation drying device,
As a result of the area being once narrowed in the branch flow passage 16 portion between the 801 and the branch piece 900, noise is generated in the branch flow passage 16 portion.

The present invention has been made in view of the conventional circumstances, and an object thereof is to provide a bathroom ventilation / drying device which does not have a noise problem and which can easily perform optimum distribution of the circulating air volume and the exhaust air volume. It is in.

[0005]

[Means for Solving the Problems] The technical means taken to achieve the above-mentioned object is that two discharge passages are connected at appropriate intervals on the same circumference of a casing having a volute shape in a multiblade blower. The one discharge passage is communicated with the outside of the room, the other discharge passage is communicated with the inside of the room, a heater is provided in the passage, and the suction port of the casing is communicated with the room. Here, it is preferable to connect the two discharge passages so as to smoothly extend the volute of the casing in order to reduce the flow passage resistance.

[0006]

According to the above technical means, from one discharge passage,
Moisture-containing air is circulated inside the room through the heater, and the moisture-containing air is directly discharged to the outside from the other discharge passage. At that time, since the respective discharge passages are continuously arranged on the same circumference of the casing at appropriate intervals, the distribution to the two flow passages can be smoothly performed without passing through a portion such as a throttle flow passage that narrows the area. You can do it.

[0007]

As described above, according to the present invention, since the respective discharge passages are connected to each other on the same circumference of the casing having the volute shape at appropriate intervals, the moisture in the room sucked from the intake port is absorbed. The air containing air is distributed to each discharge passage of the casing without passing through the throttle passage. Therefore,
Comfortable with no noise. In addition, each discharge path is
When the other discharge path is point-symmetric with respect to one discharge path, the air volume becomes 1: 1. Therefore, it is easy to obtain the amount of circulating air is optimum air volume by applying the positional relationship 200 meters ³ / h, exhaust air volume 100 m ³ / h. Further, it suffices to simply connect the two discharge passages to the casing at appropriate intervals, and as in the prior art, the branch piece is cut from the slit and cut from the slit in the intermediate boundary wall portion that divides the two chambers in which the casing is juxtaposed. The structure is simple and the manufacturing cost is low, without forming a complicated structure such as bending.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1 and 2 schematically show an embodiment of a bathroom ventilation / drying apparatus of the present invention. Reference numeral A is a bathroom ventilation / drying apparatus, 1 is a main body case of the bathroom ventilation / drying apparatus A, and 2 is a multi-blade blower.

The main body case 1 has a box shape in which a mounting flange portion 11 is bent around the periphery, and the mounting flange portion 11 has the ceiling wall b of the bathroom B.
It is mounted on the surface of the edge of the mounting opening 100 and is of a wall-embedded type, and the front opening is covered with a removable cover 21 having a large number of elongated holes 21a.

The multi-blade blower 2 comprises a casing 12, two discharge passages 3 and 4 formed in the casing 12, a fan 22, a motor 32, and a heater 42. The multi-blade blower 2 is installed in the main body case 1 described above. There is.

The casing 12 has a volute shape as in the conventional case, and is installed in the main body case 1 with a suction port 12a having a removable bell mouth 12a 'facing the cover 21 in parallel. There is.

The fan 22 is connected to a shaft 32a of a motor 32 mounted on the main body case 1 and is rotationally driven.

The casing 12 has a discharge passage 3 for circulation.
And a discharge passage 4 for exhaust.

As shown in FIG. 1, the discharge passages 3 and 4 are continuously arranged on the same circumference of the casing 12 so as to smoothly extend the volute. In detail, tongues 12b and 12b are provided on the same circumference of the casing 12 at appropriate intervals, and the volutes are continuously connected from the tongues 12b and 12b, respectively. Discharge path 3 on the left side of
(Hereinafter referred to as the first discharge passage)) faces its outlet 3a to the cover 21, while the other (the right discharge passage 4 in FIG. 1 (hereinafter referred to as the second discharge passage)) has its outlet 4a. It is exposed to the outside of the main body case 1 described above.

A heater 42 is built in the first discharge passage 3 in the middle thereof, specifically in the vicinity of the outlet 3a, and the heater 42 heats it to raise the temperature and lower the relative humidity. The air is allowed to circulate from the outlet 3a to the indoor bathroom.

The outlet 4a communicates with the outside through an exhaust duct 5.

Next, the operation of the bathroom ventilation / drying apparatus in this embodiment will be briefly described. When the multiblade blower 2 is driven, the air containing moisture in the bathroom B is sucked from the bell mouth 12a 'and the casing 1 It is vortex-flowed inside and is distributed to each of the discharge passages 3 and 4 continuous to the volute. Then, the air reaching the first discharge path 3 is heated by the heater 42 to lower the relative humidity and circulated in the bathroom B, and the air in the second discharge path 4 is not dehumidified but is exhausted to the outside as it is. When performing the drying operation, the second discharge passage 4 is positioned about 90 degrees downstream of the first discharge passage 3 as shown in FIG. 1, so that the optimum circulation air flow rate is 200 m ³ / h and exhaust air flow rate. 100 m ³
/ H can be distributed easily.

Further, performance tests were conducted on the bathroom ventilation / drying apparatus of this embodiment and the conventional bathroom ventilation / drying apparatus comprising one fan and one motor. This result shows that the circulating air volume is 200 m ³
/ H and ventilation air volume of 100 m ³ / h were commonly used to measure noise. In contrast to the conventional noise of 49 db (A), in the present embodiment, low noise up to 44 db (A) is used. Was created

[Brief description of drawings]

FIG. 1 is a schematic front view showing a state in which a cover is removed.

FIG. 2 is a schematic side sectional view showing a use state.

FIG. 3 is a schematic side sectional view showing a state of use of a conventional example.

FIG. 4 is a side sectional view schematically showing a usage state of another conventional example.

[Explanation of symbols]

 A: Bathroom ventilation / drying device 3, 4: Discharge path 1: Casing 42: Heater 12a: Suction port

Claims (1)

[Claims] 1. A multi-blade blower, which has a volute-shaped casing, has two discharge passages connected to each other on the same circumference at appropriate intervals, one of the discharge passages communicating with the outside of the room, and the other discharge passage. A bathroom ventilation / drying device characterized in that a heater is provided in the passage while communicating with the room, and a suction port of the casing is communicated with the room.