JPS5814087Y2 - Automotive air blower - Google Patents

Description

[Detailed explanation of the idea] TECHNICAL FIELD The present invention relates to an improvement of an automobile air blower.

The main cause of noise in air conditioners is the blower, and current heaters use a combination of inside and outside air, so an opening inside the car is required upstream of the blower in order to suck inside air.

However, due to space and air resistance considerations, it was difficult to locate the openings on the indoor side far from the blower, and the biggest problem was the air noise radiated from the inside air intake during inside air circulation. .

A conventional blower device is shown in FIG.

01 is a blower, 02 is a casing surrounding the blower 01, 0
3 is an inside/outside air switching box provided upstream of the casing 02, which has an inside air suction port 04 on the side and an outside air suction port 05 on the top surface;
It is now possible to switch using damper 06.

01 is the vehicle body dance panel 08 is the f7 shuttle panel 0
7 is a soundproof material pasted, 09 is a porous sound absorbing material such as a car vent pasted on the surface of the soundproof material 08, 010 is a deck panel of the car body, and 011 is an outside air introduction opening made in the deck panel 010. , 012 is a glove box, 013 is an instrument panel, and 014 is a parcel tray.
11, and the inside air suction port 04 is installed so as to face the glove box 012. (1) The inside air suction port 04 faces toward the passenger, so the inside air suction port It is necessary to provide a gap for introducing inside air into the glove box 04, and the volume of the glove box 012 is reduced.

(2) The inside air intake port 04 is raised toward the passenger (
- Floor noise is radiated directly into the passenger compartment towards the ears of the passengers.

(3) At the same time, there is a large flow of air in the internal air circulation state, which causes discomfort to the occupants.

There are drawbacks such as.

To prevent this, (1) As shown in Figure 2, cover the entire lower part of the instrument panel 013 with sound insulating material.
15, but the space at the bottom of the instrument panel 013 cannot be used effectively as a storage space.

(2) Furthermore, as shown in Fig. 3, a duct 016 is provided at the opening of the inside air inlet 04 that directs the occupants toward the passenger compartment. The noise reduction effect of the reflection and refraction in the panel 07 is about 0.7 to 1.3 dB, and air resistance increases.

Even if improvements were made, they did not have much effect.

The present invention eliminates the above-mentioned conventional drawbacks, and an embodiment thereof is shown in FIGS. 4 and 5.

1 is a blower, 2 is a casing that surrounds the blower 1, and 3 is an inside/outside air switching box provided on the top of the casing 2, which is equipped with an inside air suction port 4 and an outside air suction port 5, and is switched by a damper 6. Ru.

7 is a tongue panel of the car body, 8 is a soundproofing material attached to the damper panel, 9 is a porous sound absorbing material such as a car vent attached to the surface of the soundproofing material 8, 10 is a tenkirou panel of the car body, and 11 is a tenkirou Outside air introduction opening raised on panel 10, 12 glove box, 13 instrument panel, 1
4 is a parcel tray, and 15 is a space.

That is, in the present invention, the outside air inlet 5 is connected to the tenkirou panel 10.
The casing 2 is connected to the outside air introduction opening 11 of the dash panel 7, with the inside air inlet 4 facing the dash panel γ side.
At the corner of the vehicle body formed by the dash panel T and the ten-kilow panel 11, so that a space 15 as a required internal and external air passage exists between the internal air intake port 4 and the dash panel 7. It is equipped with an air blower.

As described above, the present invention provides a blower device consisting of a blower, a casing surrounding the blower, and an inside/outside air switching box having an inside air intake port and an outside air intake port on the upper part of the casing. This is an automotive air blower installed with the casing facing toward the side and close to the dash panel, with a space between the inside air intake and the dash panel. Since there is no need to provide a space (the conventional L part), the space inside the instrument panel can be used as effectively as possible, and the volume of the glove box can be reduced.

(2) The sound emitted by the blower is transmitted to the passenger side via the side of the inside/outside air switching box, so it becomes very low.

In addition, the noise radiated toward the Danshu panel is absorbed and refracted by the sound absorbing material on the surface of the Danshu panel, and is further refracted there. Although sound is absorbed and refracted by the material, by placing the casing close to the dance panel, noise propagation to the bottom of the casing is minimized (
・Ru.

Incidentally, when compared with the conventional device, differences between FIG. 7 and FIG. 8 can be seen.

The same patterns in these figures indicate the same sound pressure level, and a noise reduction of 5 dB can be achieved at the front seat passenger's ear position.

(3) Since the inside air circulation state is also dispersed from both the left and right sides of the inside/outside air switching box and the inside air is sucked in, it eliminates the feeling of discomfort caused by too much air flowing in the conventional riding comfort.
Ta.

It has excellent effects such as

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional air blower for an automobile, and FIGS. 2 and 3 show the state of noise radiation when a soundproofing device is installed. Fig. 4 is a sectional view of an embodiment of the present invention, Fig. 5 is a perspective view of the blower, Fig. 6 is the noise radiation state of the invention, and Figs. 7 and 8 are the conventional device and the invention. This is a comparison of the noise. 1...Blower, 2...Casing, 3
...Internal and external air switching box, 4...Inside air intake port, 5...Internal and external air intake port, 6...Damper,
7...Dash panel, 8...Soundproofing material, 9...Sound absorbing material, 10...Tenkirou panel, 11...Outside air introduction Opening, 12...
... Glove box, 13 ... Instrument panel, 1
4... Parcel tray, 15... Space section.

Claims (1)

[Scope of utility model registration request] A blower device for an automobile includes a blower, a casing surrounding the blower, and an inside/outside air switching box having an inside air intake port and an outside air intake port on the upper part of the casing. A blower device for an automobile, characterized in that the ventilator is mounted close to the dash panel so that a space exists between the inside air suction port and the dash panel.