JPH0431479Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to an air conditioning fan duct installed on a ceiling or wall, for example, to send hot or cold air from an air conditioner to a suitable location in a room. .

[Conventional technology]

Conventionally, the inner surface of the above-mentioned air conditioning ventilation duct has been formed to be smooth, and no special layer has been formed on the inner surface.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional air conditioning blower duct, when it is connected to something that generates sound (hereinafter referred to as a sound source) such as an air conditioner, the sound of the sound source propagates inside the blower duct. The sound itself from the sound source, or the louder volume of the sound amplified in the ventilation duct, is emitted from the opening of the ventilation duct, causing noise in the room or outdoors where the opening is installed. There was a problem that caused this to occur.

The present invention has been developed in view of the above-mentioned circumstances, and an object of the present invention is to provide an air conditioning ventilation duct that does not generate noise indoors or outdoors that its opening faces, even when connected to a sound source.

[Means for Solving the Problems] The characteristic structure of the air conditioning blower duct of the present invention is that it has a densely flocked raised layer with heat insulating properties over almost the entire inner surface. is as follows.

[Effect]

In other words, the sound propagating inside the air duct is blocked by the densely flocked raised layer that covers almost the entire inner surface, and does not reach the duct body. Therefore, the duct body vibrates and the sound is amplified. Not only does this eliminate the risk of air pollution, but it is also absorbed into the raised layer formed on the inner surface of the air duct.

In addition, even when humid warm air is circulated through the ventilation duct, condensation is suppressed by the insulating raised layer.
Even if the water vapor in the hot air condenses into water droplets, the densely flocked raised layer has water-retaining properties that absorb the water, preventing the collected water droplets from flowing out and staining the floors and walls.

[Effect of idea]

Therefore, even if the blower duct is connected to the sound source, the sound generated from the sound source or amplified sound can be prevented from becoming noise and being emitted from the opening of the blower duct. .

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 3, a blower duct 1 has an outlet 5 formed at its tip and at a midway point in the length direction in order to supply hot or cold air emitted from an air conditioner 4 for both cooling and heating to appropriate locations in the room. are connected to the air conditioner 4 and arranged along the ceiling surface 6 to form an air conditioner.

As shown in FIGS. 1 and 2, the blower duct 1 consists of a rectangular cylindrical main body 2 made of iron plate, and the inner surface of the cylindrical main body 2 is covered with heat-insulating material densely flocked over almost the entire surface. A raised layer 3 with a certain texture is formed.

The means for forming the raised layer 3 on the surface of the cylindrical main body 2 includes applying an adhesive to the surface of the cylindrical main body 2, charging the cylindrical main body 2, and spraying short fiber-like hair in this state. This is a means for applying flocking to the surface of the cylindrical main body 2.

According to the configuration of the embodiment described above, since an air layer that acts as a heat insulating layer is formed on the surface of the blower duct 1 by the raised layer 3, moist warm air is transferred to the blower duct 1.
Even if the water flows inside the duct 1, condensation on the inner surface of the duct 1 can be suppressed.

[Another example]

The blower duct 1 may be formed from another metal plate, resin plate, or the like instead of being formed from an iron plate.

To form the raised layer 3, the raised layer 3 may be formed by not directly planting the hairs on the surface of the cylindrical main body 2, but by bonding the raised hairs to a base material such as cloth or a membrane.

[Brief explanation of the drawing]

The drawings show an embodiment of the air conditioning duct according to the present invention, and FIG. 1 is a longitudinal cross-sectional perspective view of the duct, and FIG.
The figure is an enlarged view of the main parts, and FIG. 3 is an overall side view showing the air conditioning equipment. 3...Napped layer.

Claims (1)

[Scope of utility model registration request] This is an air-conditioning ventilation duct in which an insulating raised layer 3 is densely flocked over almost the entire inner surface.