JPH0525224U - Soundproof structure of air conditioner - Google Patents

Abstract

(57) [Summary] [Purpose] To sufficiently reduce vibration and noise in a wide frequency band in a soundproof structure for an air conditioner. [Structure] Between the inner layer 13 and the outer layer 14 of the soundproof material 16,
An intermediate layer 15 that absorbs vibration and noise in a specific frequency band generated from the compressor 11 and the accumulator 12 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a soundproof structure of an air conditioner.

[0002]

[Prior Art]

 Conventionally, as shown in FIG. 6, an air conditioner is provided with a compressor 1 and an accumulator 2. Since the compressor 1 and the accumulator 2 generate vibration and noise during operation, the outer periphery of the compressor 1 and the accumulator 2 are wrapped with two layers of a soundproof material 5, an inner layer 3 made of felt and an outer layer 4 made of rubber.

[0003]

[Problems to be solved by the device]

 However, there is a problem that vibration and noise in a wide frequency band generated from the compressor 1 and the accumulator 2 cannot be sufficiently reduced only by the two layers of the inner layer 3 made of felt and the outer layer 4 made of rubber.

Therefore, an object of the present invention is to provide a soundproof structure for an air conditioner capable of sufficiently reducing vibration and noise in a wide frequency band.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the soundproof structure of the air conditioner of the present invention has, as shown in FIG. 1, an outer layer of a compressor 11 and an accumulator 12, an inner layer 13 made of felt and an outer layer 14 made of rubber. And a sound-insulating material wrapped in two layers, between the inner layer 13 and the outer layer 14, at least one layer capable of absorbing vibration and noise in a specific frequency band generated from the compressor 11 and the accumulator 12. The intermediate layer 15 is provided. Further, it is preferable that at least a part of the intermediate layer 15 capable of absorbing the vibration / noise in the specific frequency band generated in the compressor 11 is the asphalt 15a.

[0006]

[Action]

 According to the soundproof structure of the present invention, the intermediate layer 15 between the inner layer 13 and the outer layer 14 can absorb vibration and noise in a specific frequency band generated from the compressor 11 and the accumulator 12. As a result, vibration and noise in a wide frequency band can be sufficiently reduced, and the vibration and noise of the air conditioner can be reduced.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. As shown in FIG. 1 and FIG. 2, the compressor 11 and the accumulator 12 of the air conditioner basically have at least an inner layer 13 of felt, an intermediate layer 15, and an outer layer 14 of rubber. It is wrapped in three layers of soundproof material 16. The felt inner layer 13 and the rubber outer layer 14 are made of the same material as the conventional one (see FIG. 6), and both have a vibration-proof and sound-proof function. In particular, as shown in FIG. 5, the inner layer 13 made of felt has a high frequency band (about 800 Hz or more) in a range surrounded by a broken line, such as vibration and noise, such as pressure pulsation due to the refrigerant gas and high frequency generated in the cylinder chamber. It is possible to absorb pressure fluctuations, sliding and impact between compression mechanism parts, etc.

The material of the intermediate layer 15 is divided between the compressor 11 side and the accumulator 12 side. That is, the compressor 11 side is provided with an asphalt layer 15a on the inner layer 13 side, and a soundproof layer 15b on the outer layer 14 side capable of absorbing vibration and noise in a specific frequency band generated from the compressor 11. Further, the accumulator 12 side is provided with a soundproof layer 15c capable of absorbing vibration and noise in a specific frequency band generated from the accumulator 12. That is, the soundproof material 16 on the compressor 11 side has a four-layer structure including the inner layer 13, the intermediate layer (the asphalt layer 15a, the soundproof layer 15b) 15, and the outer layer 14, and the soundproof material 16 on the accumulator 12 side is the inner layer 13, the middle layer. It has a three-layer structure of a layer (soundproof layer 15c) 15 and an outer layer 14.

As shown in FIG. 5, the intermediate layer 15 on the side of the compressor 11 is provided with the asphalt layer 15a. As shown in FIG. This is because vibrations and noises in a low frequency band (about 800Hz or less) such as balancing force and unbalanced inertial force are generated, and the function of absorbing these vibrations and noises is particularly excellent. The material of the soundproof layers 15b and 15c is appropriately selected according to the frequency band of vibration / noise to be absorbed.

The soundproof material 16 is wrapped around the outer circumferences of the compressor 11 and the accumulator 12 and wrapped, and the string 17 is wrapped around the hook 18 and locked. The gap between the compressor 11 and the accumulator 12 may be filled with glass wool 19 having a soundproof / vibration-proof function.

The soundproof material 16 is for the body winding of the compressor 11 and the accumulator 12, but as shown in FIG. 3, the soundproof material 20 for the upper lid has the same structure as the soundproof material 16. The soundproof material 20 is provided with a wire hole 20a, a discharge pipe hole 20b, a suction pipe hole 20c, and the like.

With the above configuration, the intermediate layer 15 between the inner layer 13 and the outer layer 14 of the soundproofing material 16 can absorb vibrations and noises in a specific frequency band generated from the compressor 11 and the accumulator 12. As a result, vibration and noise in a wide frequency band can be sufficiently reduced, so that the vibration and noise of the air conditioner can be reduced. In particular, when the asphalt layer 15a is provided on the intermediate layer 15, it is possible to sufficiently reduce vibration and noise in a low frequency band (about 800 Hz or less) such as torque fluctuation due to compression work.

FIG. 4 shows a second embodiment. The material of the intermediate layer 15 of this embodiment is not divided between the compressor 11 side and the accumulator 12 side. That is, the asphalt layer 15a is provided on the inner layer 13 side, and the soundproof layer 15b or 15c is provided on the outer layer 14 side. Also in this embodiment, the same operation and effect as those of the first embodiment can be obtained.

[0014]

[Effect of the device]

 As is clear from the above explanation, the soundproof structure of the present invention has an intermediate layer between the inner layer and the outer layer of the soundproof material, which absorbs vibration and noise in a specific frequency band generated from the compressor and the accumulator. It is provided. Therefore, the inner layer, the outer layer, and the intermediate layer can sufficiently reduce the vibration and noise in a wide frequency band, so that the vibration and noise of the air conditioner can be reduced. Further, by providing an asphalt layer in the intermediate layer, it becomes possible to sufficiently reduce vibration and noise particularly in a low frequency band.

[Brief description of drawings]

FIG. 1 is a sectional view of a soundproof material according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a soundproof material.

FIG. 3 is a perspective view of an upper lid.

FIG. 4 is a sectional view of a soundproof material according to a second embodiment of the present invention.

FIG. 5 is a graph showing frequency bands of vibration and noise.

FIG. 6 is a cross-sectional view of a conventional soundproof material.

[Explanation of symbols]

11 ... Compressor, 12 ... Accumulator, 13 ... Inner layer, 1
4 ... outer layer, 15 ... middle layer, 15a ... asphalt layer, 1
5b, 15c ... soundproof layer, 16, 20 ... soundproof material, 19 ... glass wool.

Claims (2)

[Scope of utility model registration request] 1. A felt inner layer (13) and a rubber outer layer (1) around the outer periphery of the compressor (11) and the accumulator (12).
In the soundproof structure of the air conditioner, which is wrapped in two layers of soundproof material with 4), the specification generated from the compressor (11) and the accumulator (12) between the inner layer (13) and the outer layer (14). At least one intermediate layer capable of absorbing vibration and noise in the frequency band of
(15) A soundproof structure for an air conditioner characterized by being provided. 2. The asphalt (15a) is characterized in that at least a part of the intermediate layer (15) capable of absorbing vibrations and noises in a specific frequency band generated in the compressor (11). Soundproof structure of the air conditioner described in.