JPH055372Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to soundproofing measures for outdoor air conditioner units, and more specifically, the present invention relates to soundproofing measures for outdoor air conditioner units. Regarding soundproofing materials for speakers.

Conventionally, soundproofing measures for outdoor air conditioner units have been achieved by individually pasting sound absorbing and sound insulating materials without three-dimensional molding onto desired areas such as the internal side walls of the outdoor air conditioner unit, or by filling voids. There are methods such as integrating sound absorbing material without three-dimensional molding with sound insulating material, rolling it up, sewing the ends together, and making it into a cylindrical shape. It depended on the method.

However, in the case of such soundproofing measures, the total number of parts of the soundproofing material is 5 or 6, and the installation work is extremely complicated.In particular, the sealing performance is poor, noise leaks, and the soundproofing effect is poor, and furthermore, the cost is high. It had the disadvantage of being expensive.

Therefore, the inventors of the present invention worked hard to obtain a soundproofing effect equal to or better than the conventional 5 or 6 soundproofing materials by replacing it with one or two three-dimensional molded soundproofing materials, and to also reduce the installation work. As a result of research, we have changed from the conventional soundproofing material without three-dimensional molding, which is simply rolled up and sewn together, to a soundproofing material with a three-layer structure of sound-absorbing material, sound-insulating material, and sound-absorbing material, which is integrally molded and three-dimensionally processed. By covering one or both of the compressor and accumulator in the outdoor unit of an air conditioner with a cylindrical shape with one opening, a soundproofing effect superior to conventional soundproofing materials with five or six parts can be achieved. They discovered that this could be achieved and came up with the present invention.

The sound absorbing material of the present invention includes a bulky nonwoven fabric made of one or more of vegetable, animal, mineral, and synthetic resin fibers, a synthetic resin binder, a flame retardant, etc.
Felt, urethane, synthetic resin foam materials such as vinyl chloride, etc. can be used. The sound absorbing material 1 and the sound absorbing material 1' used in the present invention do not necessarily have to be the same, and different materials may be used.

The sound insulation materials proposed in this invention include asphalt,
A sheet-like product is used, which is obtained by kneading one or more binder components such as rubber or synthetic resin with a filler component and rolling the mixture.

It is essential to use a three-layer structure in which such sound insulating material is sandwiched between sound absorbing materials, and only with this structure can the desired effect be obtained.

The present invention will be described below with reference to the drawings.

FIG. 1 is a plan view in which both the compressor and the accumulator are simultaneously fitted with the three-dimensionally molded soundproofing material of the present invention, and the three-dimensionally molded soundproofing material is shown in cross section. FIG. 2 is an enlarged view of part A in FIG. 1, which is one of the features of the present invention. The inner sound-absorbing material 1' is designed to be short and the sound-insulating members 2 are designed to come into contact with each other, thereby improving sealing performance.
FIG. 3 is a front view in which both the compressor and the accumulator are simultaneously fitted with the three-dimensional molded soundproofing material of the present invention, and the three-dimensional molded soundproofing material is shown in cross section.
FIG. 4 is a schematic diagram of the inside of the outdoor air conditioner unit without soundproofing material installed.

The present invention will be explained in more detail with reference to Examples below. Needless to say, the present invention is not limited to the following examples.

Example 10 parts by weight of butyl rubber, straight asphalt
20 parts by weight, 25 parts by weight of blown asphalt, 25 parts by weight of calcium carbonate, and 20 parts by weight of talc,
It was extruded to a thickness of 1.5mm and was made into a sound insulating material. As a sound absorbing material, a fleece was formed from 60 parts by weight of recycled wool, 10 parts by weight of fallen cotton, 5 parts by weight of synthetic fibers, 25 parts by weight of phenol resin powder, and 2 parts by weight of polyphosphate (flame retardant). Introduced into heating furnace, thickness 15mm,
A sublime nonwoven fabric with an areal density of 600 g/m ² was obtained.

After the sound insulating material was heated and softened, it was sandwiched between the sound absorbing materials, placed on a lower mold, and heated to perform three-dimensional compression molding.

The three-dimensionally molded soundproofing material was made into a cylindrical shape with one opening, and the overlapping parts were adhered to form a cylindrical three-dimensional molded body with one opening, which was attached to cover the compressor and the accumulator.

Comparative example Felt material was pasted at four locations on the internal side wall of the outdoor air conditioner unit, and the compressor was further covered with sound absorbing material made of felt rolled into a cylindrical shape without three-dimensional molding, and a top plate was placed on top. We implemented soundproofing measures consisting of six points.

Test method Set the control of the indoor air conditioner unit installed in a room with a room temperature of 30°C or higher to a cooling temperature of 16°C, and enter the input. After inputting the data, it was left for 5 minutes and the noise of the outdoor air conditioner unit was evaluated.

Test results [Hz] 250 500 1k 2k 4k Example [dB] 35 39 38 36 27 Comparative example [dB] 40 44 45 36 31

[Brief explanation of the drawing]

Figure 1 is a plan cross-sectional view of the three-dimensionally molded soundproofing material that covers both the compressor and the accumulator at the same time.
The figure is an enlarged view of part A, FIG. 3 is a front cross-sectional view of the three-dimensionally molded soundproofing material covering both the compressor and the accumulator at the same time, and FIG. 4 is a schematic diagram of the interior of the outdoor unit of the air conditioner. 1, 1'...Sound absorbing material, 2...Sound insulating material, 3...Compressor, 4...Accumulator, 5...Fan.

Claims (1)

[Scope of utility model registration request] In the soundproofing material for outdoor air conditioner units, which has a three-layer structure of sound absorbing material 1/sound insulating material 2/sound absorbing material 1', after integrating three-dimensional molding, the sound insulating materials are brought into contact with each other and formed into a cylindrical shape with one opening. A soundproofing material for air conditioners that is characterized by the ability to