CN216347029U

CN216347029U - Sound insulation piece and electrical equipment

Info

Publication number: CN216347029U
Application number: CN202122979372.1U
Authority: CN
Inventors: 刘亚蓝; 叶益敏
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-19
Anticipated expiration: 2031-11-30

Abstract

The embodiment of the utility model provides a sound insulation piece and electrical equipment. The sound insulating member includes: the main part gives sound insulation, and the main part that gives sound insulation is closely knit material, is equipped with the resonance sound insulation district in the main part that gives sound insulation, and the resonance sound insulation district is equipped with the closed hole. The sound insulation member provided by the embodiment of the utility model has the advantages that the sound insulation main body and the closed holes are arranged together, so that a good noise reduction effect can be achieved on high-frequency sound waves and middle-low frequency sound waves, the sound absorption rate of sound waves in any frequency range is improved, the noise problem of electrical equipment such as an air conditioner is favorably improved, and the use experience of a user is further improved.

Description

Sound insulation piece and electrical equipment

Technical Field

The utility model relates to but is not limited to the technical field of noise reduction of electric appliances, in particular to a sound insulation piece and electric appliance equipment.

Background

At present, most of sound insulation materials for noise reduction of electrical equipment such as air conditioners are materials such as glass wool, polyurethane foam, and nonwoven fabric, and have a sound insulation effect mainly by the viscous resistance and ventilation resistance of air. In order to further improve the sound insulation effect of the material, the sound insulation material is increased in thickness or multiple materials are physically combined and overlapped or glued, but the improvement effect is not obvious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sound insulation piece, which can effectively improve the sound insulation effect.

The technical scheme for solving the technical problems in the embodiment of the utility model is as follows: an acoustic insulator, comprising: the main part gives sound insulation, the main part that gives sound insulation is closely knit material, be equipped with the resonance sound insulation district in the main part that gives sound insulation, the resonance sound insulation district is equipped with the closed hole.

According to the sound insulation member provided by the embodiment of the utility model, the sound insulation main body is made of the compact material, and the compact material can effectively refract, reflect and absorb high-frequency sound waves, so that a good noise reduction effect is achieved on the high-frequency sound waves. And the sound wave of the middle and low frequency penetrates through the surface of the sound insulation main body and then enters the closed holes of the resonance sound insulation area, the closed holes can resonate, the energy of the sound wave of the low frequency is consumed, the sound wave of the middle and low frequency is limited in the resonance sound insulation area, and therefore a good noise reduction effect is achieved on the sound wave of the middle and low frequency. Like this, give sound insulation the main part with seal the hole dual-pipe together, can play better noise reduction effect to high frequency sound wave, also can play better noise reduction effect to the middle and low frequency sound wave to improve the rate of sound absorption of arbitrary frequency range sound wave, be favorable to improving the noise problem of electrical equipment such as air conditioner, and then improve user's use and experience.

In addition, the sound insulating part of this application embodiment adopts the structural style of outside closely knit material with the inside hole that seals, can not adsorb the comdenstion water, therefore can avoid the comdenstion water absorption that parts such as compressor produced in the use influence syllable-dividing effect.

On the basis of the technical scheme, the utility model can be further improved as follows.

In an exemplary embodiment, the closed cavity is an atmospheric cavity or a positive pressure cavity.

In an exemplary embodiment, the closed hole is a negative pressure hole.

In an exemplary embodiment, the pressure of the negative pressure hole is less than or equal to 0.9 standard atmosphere.

In an exemplary embodiment, the closed pores are spherical, ellipsoidal, or cylindrical.

In an exemplary embodiment, the number of the closed holes is multiple, and the closed holes are distributed in a row and/or a column in the resonance isolation region.

In an exemplary embodiment, the soundproof body has a rectangular plate-like structure, and the closed hole has a circular cross section in a cross section of the soundproof body; noting that the dimension of the resonance sound insulation region in the width direction of the sound insulation main body is h, the minimum distance between the edge of the sound insulation main body in the width direction and the closed hole is h1, the diameter of the closed hole in the width direction of the sound insulation main body is d, the distance between two adjacent closed holes in the width direction of the sound insulation main body is b, and the h, the h1, the d and the b satisfy the following relations: d/2 is more than or equal to b is less than or equal to 2 d; d/2 is more than or equal to h1 and is more than or equal to 2 d; d is more than or equal to h/100 and less than or equal to h/3; based on the closed holes are normal-pressure holes or positive-pressure holes, the distance between every two adjacent closed holes in the length direction of the sound insulation main body is written as Lc, and the Lc and the d satisfy the following relations: and d/2 is more than or equal to Lc and less than or equal to d.

In an exemplary embodiment, the sound insulation body is a one-piece flexible plate-shaped structure, and the two ends of the sound insulation body are provided with engaging convex portions and engaging concave portions which are matched with each other, and the engaging convex portions and the engaging concave portions are arranged to enclose the sound insulation member into a cylindrical structure through concave-convex matching.

In an exemplary embodiment, the soundproofing body has a rectangular plate-like structure, and the engaging convex portions and the engaging concave portions are provided at both ends of the soundproofing body in a longitudinal direction thereof; wherein: the minimum distance between the edge of the sound insulation main body in the length direction and the closed hole is La, and the protruding height of the connecting convex part is L1; the L1 and the La satisfy the following relation: l1 is more than or equal to La/5 and less than or equal to La/2; and/or, the number of the connecting convex parts is a plurality, and the connecting convex parts are distributed at intervals along the width direction of the sound insulation main body; note that a width of the sound insulating body is H0, a minimum distance between an edge of the sound insulating body in the width direction and the engaging protrusion is H1, a minimum distance between adjacent two of the engaging protrusions is H2, a dimension of the engaging protrusion in the width direction of the sound insulating body is Hn, and the H0, the H1, the H2, and the Hn satisfy the following relationship: h1 is more than or equal to H0/10 and less than H0/2; h2 is more than 0 and less than 2 Hn; hn is more than or equal to H0/10 and less than H0.

In an exemplary embodiment, the soundproof body has a rectangular plate-like structure, the soundproof body has a length L, a minimum distance between one edge of the soundproof body in a length direction and the closed hole is La, and a minimum distance between the other edge of the soundproof body in the length direction and the closed hole is Lb, and L, La, and Lb satisfy the following relationship: la is more than or equal to L/10 and less than or equal to L/5; l/10 is more than or equal to Lb and less than or equal to L/5.

In an exemplary embodiment, the sound insulating body is an aluminum foil piece, a nylon piece, a polyester piece, or a vinylidene chloride piece.

In an exemplary embodiment, the thickness of the acoustic barrier is in a range of 1mm to 50 mm.

An embodiment of the utility model further provides electrical equipment which comprises the sound insulation piece in any one of the embodiments.

The electrical equipment provided by the embodiment of the utility model comprises the sound insulation piece in any one of the embodiments, so that all the beneficial effects of any one of the embodiments are achieved, and the description is omitted.

Drawings

FIG. 1 is a schematic longitudinal cross-sectional view of a baffle according to one embodiment of the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of a baffle according to one embodiment of the present invention;

FIG. 3 is a schematic longitudinal cross-sectional view of a baffle according to one embodiment of the present invention;

FIG. 4 is a cross-sectional structural view of a baffle according to one embodiment of the present invention;

FIG. 5 is a schematic longitudinal cross-sectional view of a baffle according to one embodiment of the present invention;

FIG. 6 is a schematic longitudinal cross-sectional view of a baffle according to one embodiment of the present invention;

FIG. 7 is a schematic longitudinal cross-sectional view of a baffle according to one embodiment of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1 sound insulation main body, 11 resonance sound insulation area, 12 closed hole, 13 joining convex part and 14 joining concave part.

Detailed Description

At present, most of sound insulation materials for noise reduction of electrical equipment such as air conditioners are materials such as glass wool, polyurethane foam, nonwoven fabric, and rubber. Researches show that the noise reduction effect of the scheme is not ideal due to the following reasons:

1. the sound insulation property is imparted mainly by the viscous resistance and ventilation resistance of air, but the sound insulation property is high only for high-frequency sound waves and is not preferable for low-frequency sound waves. Currently, low-frequency noise can only be reduced by perfecting the sound source.

2. Ideal sound insulation effect cannot be obtained simply by adjusting the thickness of the sound insulation material or by physically stacking the sound insulation materials which are tightly connected among the layers; and is limited by the design space of the whole air conditioner, so that the increase of the thickness of the material has limitation.

3. The mode of combining different materials is realized by means of adhesive coating, due to the inherent properties of the materials and the adhesive, the differences of elongation at break and shrinkage rate exist, the materials are hard and soft, and a coating cavity is easy to appear in the using process.

4. Soundproof cotton is artifical parcel, and the operating process atress is uneven, and unable quantization, the easy parcel that appears ties up the tension and leads to soundproof material to turn out the circumstances such as hard, makes soundproof material then lose syllable-dividing effect because of sclerosis transmission vibration, and probably increases the noise.

5. Air condition compressor easily lasts the production comdenstion water in the use, and porous sound-proof material easily adsorbs water, stores up water, influences soundproof cotton durability and syllable-dividing effect then.

To this end, the embodiment of the application provides a novel sound insulation material.

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 7, an embodiment of the present invention provides a soundproof member including: a sound insulating main body 1.

Wherein, the sound insulation main body 1 is a dense material. A resonance sound insulation area 11 is arranged in the sound insulation main body 1, and the resonance sound insulation area 11 is provided with a closed hole 12.

According to the sound insulation member provided by the embodiment of the utility model, the sound insulation main body 1 is made of the compact material, and the compact material can effectively refract, reflect and absorb high-frequency sound waves, so that a good noise reduction effect is achieved on the high-frequency sound waves. And the sound wave of the middle and low frequency penetrates the surface of the sound insulation main body 1 and then enters the closed holes 12 of the resonance sound insulation area 11, the closed holes 12 resonate, the energy of the sound wave of the low frequency is consumed, the sound wave of the middle and low frequency is limited in the resonance sound insulation area 11, and therefore a good noise reduction effect is achieved on the sound wave of the middle and low frequency. Like this, give sound insulation main part 1 and seal hole 12 double-barrelled down, can play better noise reduction effect to high frequency sound wave, also can play better noise reduction effect to the well low frequency sound wave to improve the rate of sound absorption of arbitrary frequency range sound wave, be favorable to improving the noise problem of electrical equipment such as air conditioner, and then improve user's use and experience.

In addition, the sound insulating part of this application embodiment adopts the structural style of outside closely knit material with inside closed hole 12, can not adsorb the comdenstion water, therefore can avoid the comdenstion water absorption that parts such as compressors produced in the use influence syllable-dividing effect.

In the embodiment of the application, the compact material meets the following requirements: 1) according to the GB/T1038-2000 test requirement, the gas transmission capacity of the material is less than 0.0001m³/(m²Pa.24 h); 2) the water absorption of the material is less than 0.01% in 24 hours.

In an exemplary embodiment, the enclosed cavity 12 is an atmospheric cavity or a positive pressure cavity, as shown in fig. 1-4.

The closed hole 12 is a normal pressure hole or a positive pressure hole, and gas needs to be filled into the closed hole 12 in the production process. After the gas is filled, when sound waves enter the closed holes 12, the noise reduction effect of the sound insulation piece can be further improved by means of the viscous resistance of the gas.

On the other hand, the scheme of filling gas is also favorable for the noise insulation piece to resist external atmospheric pressure, reduces the strength requirement on the noise insulation main body 1, and then reduces the cost of the noise insulation piece.

In the production process, a plurality of intermediate pieces with grooves can be processed firstly, and then a plurality of (for example, two) intermediate pieces are spliced together in a hot pressing mode and the like, so that the grooves of the intermediate pieces are spliced to form the closed holes 12.

In an exemplary embodiment, the gas filled in the closed cavity 12 comprises any one or more of the following gases: air, nitrogen, argon.

That is, the gas filled in the closed hole 12 may be, but is not limited to: air, commonly used inert gases (such as nitrogen, argon, etc.).

In an exemplary embodiment, the enclosed cavity 12 is a negative pressure cavity, as shown in fig. 5-7.

The closed hole 12 is a negative pressure hole with a certain vacuum degree, and the closed hole 12 needs to be vacuumized in the production process. After vacuumizing, the medium for transmitting sound waves in the closed holes 12 is reduced, so that the transmission rate of the sound waves can be reduced, the vacuum noise reduction effect is achieved, and the noise reduction effect of the sound insulation piece is further improved.

On the other hand, along with the extension of time, when the sound insulating part appearance ageing phenomenon, in the air can the infiltration negative pressure hole, then original vacuum falls to fall and can change into the viscidity resistance that utilizes the air and realize inhaling the noise reduction effect of sound, therefore can effectively prolong the sound insulation validity of sound insulating part and the life of sound insulating part.

In the production process, the normal pressure holes can be processed according to a processing method of the normal pressure holes, and then the normal pressure holes are vacuumized. After the pressure is properly pumped, the vacuumizing equipment is removed, and the through hole between the vacuumizing equipment and the negative pressure hole is sealed in a gluing mode and the like.

In an exemplary embodiment, the closed holes 12 are elongated holes, as shown in fig. 5-7. The length direction of the elongated holes is consistent with the length direction of the sound insulation main body 1.

For the scheme that the closed holes 12 are negative pressure holes, the closed holes 12 are designed to be strip-shaped holes, the size is relatively large, vacuumizing in the production process is facilitated, and the effect of vacuum noise reduction is also facilitated. The length direction in rectangular shape hole is unanimous with the length direction who gives sound insulation main part 1, is favorable to increasing the length that seals hole 12 to on guaranteeing that sealed hole 12 has the basis of great length, sound insulation main part 1 also has higher intensity, realizes giving consideration to the size demand of sealed hole 12 and the intensity demand of sound insulation main part 1.

In an exemplary embodiment, the pressure of the negative pressure hole is less than or equal to 0.9 standard atmospheres.

The pressure of the negative pressure hole is limited in the range of less than or equal to 0.9 standard atmospheric pressure, so that the sound insulation effect is improved by utilizing the vacuum noise reduction principle.

Of course, the pressure of the negative pressure hole is not limited to the above range, and can be reasonably adjusted according to needs.

In an exemplary embodiment, the enclosed cavity 12 is spherical, ellipsoidal, or cylindrical.

The shapes of the sphere, the ellipsoid, the cylinder and the like are regular, and the processing and the forming are convenient.

In the embodiment of forming the normal pressure hole or the positive pressure hole by filling the closed hole 12 with gas, the closed hole 12 may be spherical or ellipsoidal.

For the solution of forming the closed hole 12 into a negative pressure hole by vacuum pumping, the closed hole 12 may be cylindrical.

Of course, the shape of the closed hole 12 is not limited to the above shape, and may be adjusted as necessary.

In an exemplary embodiment, the number of closed cavities 12 is multiple, as shown in fig. 1-7. A plurality of closed holes 12 are distributed in a row and/or a column within the resonance isolation zone 11.

Like this, make the structure of sound insulating part comparatively regular on the one hand, the machine-shaping of being convenient for. On the other hand, the plurality of closed holes 12 are easy to resonate, so that the consumption of sound wave energy is improved, and the noise reduction effect is further improved.

For example, as shown in fig. 1 to 4, in the case where the closed cells 12 are normal pressure cells or positive pressure cells, the closed cells 12 may be arranged in a row along the length direction of the soundproof body 1, in a row along the width direction of the soundproof body 1, and in a row along the thickness direction of the soundproof body 1.

As shown in fig. 5 to 7, in the case where the closed cells 12 are negative pressure cells, the closed cells 12 may be arranged in a row in the width direction of the soundproof body 1 and in a row in the thickness direction of the soundproof body 1.

In an exemplary embodiment, the soundproof body 1 has a rectangular plate-like structure, as shown in fig. 1 to 3, and 5 to 7. The closed cavities 12 are circular in cross-section in the cross-section of the soundproofing body 1, as shown in fig. 4.

As shown in fig. 4, note: the dimension of the resonance sound-insulating region 11 in the width direction of the sound-insulating body 1 is h, the minimum distance between the edge of the sound-insulating body 1 in the width direction (i.e., one end of the sound-insulating body 1 in the width direction) and the closed hole 12 is h1, the diameter of the closed hole 12 in the width direction of the sound-insulating body 1 is d, and the interval between two adjacent closed holes 12 in the width direction of the sound-insulating body 1 is b.

Wherein h, h1, d and b satisfy the following relations: d/2 is more than or equal to b is less than or equal to 2 d; d/2 is more than or equal to h1 and is more than or equal to 2 d; h/100 is not less than d and not more than h/3.

Further, the closed pores 12 are normal pressure pores or positive pressure pores. Note that the distance between two adjacent closed holes 12 in the longitudinal direction of the sound-insulating main body 1 is Lc, as shown in fig. 1 and 2.

Wherein Lc and d satisfy the following relationship: and d/2 is more than or equal to Lc and less than or equal to d.

The main body 1 that will give sound insulation designs for rectangular plate structure for it is comparatively regular to give sound insulation a structure, and the machine-shaping of both being convenient for, also convenient to use. Through testing, carry out above-mentioned size optimal design to the sound insulating part, can compromise the intensity requirement and the noise reduction effect of sound insulating part.

In an exemplary embodiment, the sound insulating body 1 is a one-piece, flexible, plate-like structure. Both ends of the soundproof body 1 are provided with engaging convex portions 13 and engaging concave portions 14 which are fitted, as shown in fig. 1, 2, 3, 5, 6 and 7. The engaging convex portion 13 and the engaging concave portion 14 are provided to surround the sound insulating member in a cylindrical structure by concave-convex engagement.

The sound insulation main body 1 is made of an integrated flexible plate-shaped material and is provided with the engaging convex portion 13 and the engaging concave portion 14 which are matched with each other, so that the sound insulation piece can be enclosed into a cylindrical structure in a self concave-convex matching mode, self-fixing is achieved, sound insulation is performed on a part (such as a compressor) enclosed by the sound insulation piece, and the sound insulation piece is not required to be fixed in a bundling mode.

Therefore, the sound insulation piece is made of the same material, binding and fixing are not needed, a binding process is omitted, and the generation efficiency is improved; and avoids the product differentiation caused by different bundling force; and; the problem of hardening vibration caused by over-tight binding can be avoided; the problem that the sound insulation is greatly reduced and even fails due to the fact that the cavities are formed due to different materials in the bundling use process of the conventional sound insulation piece can be solved.

In the using process, the part to be subjected to sound insulation (such as an air conditioner compressor) can be wrapped by one sound insulation piece, and the part to be subjected to sound insulation can also be wrapped by splicing a plurality of sound insulation pieces.

Illustratively, the engaging projections 13 are in the shape of a quadrangular prism (as shown in fig. 1, 3, and 5) or nearly spherical (as shown in fig. 2, 3, 6, and 7).

In one example, the soundproofing body 1 has a first end and a second end disposed opposite. As shown in fig. 1, 2, 5 and 6, the sound insulation main body 1 is provided with a connecting convex portion 13 at a first end and a connecting concave portion 14 at the other end, and the connecting convex portion 13 is matched with the connecting concave portion 14.

In another example, referring to fig. 1, 2, 5 and 6, the soundproof body 1 is provided at a first end with an engaging recess 14 and at the other end with an engaging protrusion 13, and the engaging protrusion 13 is fitted into the engaging recess 14.

In still another example, as shown in fig. 3 and 7, the first end of the soundproof body 1 is provided with an engaging convex 13 and an engaging concave 14, the second end of the soundproof body 1 is also provided with an engaging convex 13 and an engaging concave 14, and the engaging convex 13 of the first end is fitted with the engaging concave 14 of the second end, and the engaging concave 14 of the first end is fitted with the engaging convex 13 of the second end.

In an exemplary embodiment, the soundproof body 1 has a rectangular plate-like structure, and the engaging convex portion 13 and the engaging concave portion 14 are provided at both ends of the soundproof body 1 in the length direction.

As shown in fig. 1, 2, 5 and 6, the minimum distance between the edge of the soundproof body 1 in the longitudinal direction (i.e., one end of the soundproof body in the longitudinal direction) and the closed hole 12 is La, and the protruding height of the engaging protrusion 13 is L1. L1 and La satisfy the following relation: l1 is more than or equal to La/5 and less than or equal to La/2.

In an exemplary embodiment, the number of the engaging projections 13 is plural, and the plural engaging projections 13 are spaced apart in the width direction of the soundproof body 1, as shown in fig. 1, fig. 2, fig. 3, fig. 5, fig. 6, and fig. 7.

As shown in fig. 1 and 2, note: the width of the sound-insulating body 1 is H0, the minimum distance between the edge of the sound-insulating body 1 in the width direction (i.e., one end of the sound-insulating body in the width direction) and the engaging projection 13 is H1, the minimum distance between two adjacent engaging projections 13 is H2, and the dimension of the engaging projection 13 in the width direction of the sound-insulating body 1 is Hn.

Wherein, H0, H1, H2 and Hn satisfy the following relations:

H0/10≤H1＜H0/2；0＜H2＜2Hn；H0/10≤Hn＜H0。

the main body 1 that gives sound insulation adopts the rectangle platelike structure, and the shape is comparatively regular, the machine-shaping of being convenient for. Through testing, carry out above-mentioned size optimal design to the sound insulating part, can compromise the intensity requirement and the noise reduction effect of sound insulating part.

Further, for the solution that the closed hole 12 is a negative pressure hole, Hn and H0 satisfy: hn is more than or equal to H0/10 and less than H0/2.

In an exemplary embodiment, the soundproof body 1 has a rectangular plate-like structure. As shown in fig. 1, 2, 5 and 6, the sound-insulating body 1 has a length L, the smallest distance between one edge of the sound-insulating body 1 in the longitudinal direction (i.e., one end of the sound-insulating body in the longitudinal direction) and the closed cavity 12 is La, and the smallest distance between the other edge of the sound-insulating body 1 in the longitudinal direction (i.e., the other end of the sound-insulating body in the longitudinal direction) and the closed cavity 12 is Lb.

Wherein L, La and Lb satisfy the following relationship:

L/10≤La≤L/5；L/10≤Lb≤L/5。

through testing, carry out above-mentioned size optimal design to the sound insulating part, can compromise the intensity requirement and the noise reduction effect of sound insulating part.

In an exemplary embodiment, the sound-damping body 1 is an aluminum foil piece, a nylon piece, a polyester piece, or a vinylidene chloride piece.

Nylon, polyester, polyvinylidene chloride all can satisfy the user demand of the sound insulating part of this application embodiment, compromise the requirement in each aspect such as production, intensity, noise reduction, cost.

In an exemplary embodiment, the thickness of the acoustic barrier is in the range of 1mm to 50 mm.

The thickness of the sound-proof member is limited within the range of 1mm to 50mm, and the sound-proof effect, the cost and the installation space requirement of the sound-proof member can be considered.

Of course, the thickness of the soundproof member is not limited to the above range, and may be adjusted as needed during the production process.

An embodiment of the present invention further provides an electrical apparatus (not shown in the drawings) including the sound insulating member according to any one of the above embodiments.

In an exemplary embodiment, the electrical device may be, but is not limited to: air conditioners, washing machines, refrigerators, and the like.

In an exemplary embodiment, the electrical device is an air conditioner including a compressor, and the insulator surrounds the compressor.

Further, the sound insulation members are connected end to end through the matching of the engaging convex portions 13 and the engaging concave portions 14, and are fixedly sleeved on the compressor.

Two specific embodiments are described below.

Detailed description of the preferred embodiment

As shown in fig. 1 to 4, this embodiment provides a soundproofing member including a soundproofing body 1. The sound insulation main body 1 is a flexible integrated structure and is in a rectangular plate shape. A resonance sound insulation area 11 is arranged in the sound insulation main body 1, and a plurality of spherical closed holes 12 are uniformly distributed in the resonance sound insulation area 11 in an array mode. The closed hole 12 is filled with gas, which can be air or common inert gas. The two ends of the sound insulation main body 1 are provided with the connecting convex parts 13 and the connecting concave parts 14, and the sound insulation piece can be fixed into a cylindrical structure in a buckling and pressing mode without binding. In the use, with this sound insulating part direct parcel in the compressor outside of air conditioner can.

Here, as shown in fig. 1 and 2, L is the length of the single-piece insulator, i.e., the length of the insulator body 1, and is determined according to the circumferential size of the wrapped compressor. La and Lb are distances from the closed hole 12 to both ends of the sound insulation body 1 in the longitudinal direction. Lc is the distance between two adjacent closed holes 12 in the longitudinal direction of the sound barrier. H0 is the width of a single sheet of insulation. L1 is the projection length of the engaging projection 13. H1 is the distance between the engaging projection 13 and the edge of the soundproofing body 1 in the width direction. H2 is the distance between two adjacent engaging projections 13 in the width direction of the sound insulating member. Hn is the width of any of the engaging projections 13 in the width direction of the soundproof body 1. h1 is the distance of the closed hole 12 from the edge in the width direction of the soundproof body 1. d is the diameter of the closed hole 12, and b is the distance between two adjacent closed holes 12 in the width direction of the sound-insulating main body 1.

Wherein, 1) d/2 is more than or equal to b and less than or equal to 2 d; d/2 is more than or equal to h1 and is more than or equal to 2 d; d is more than or equal to h/100 and less than or equal to h/3; d/2 is more than or equal to Lc and less than or equal to d; 2) h1 is more than or equal to H0/10 and less than H0/2; hn is more than or equal to H0/10 and less than H0; h2 is more than 0 and less than 2 Hn; 3) la is more than or equal to L/10 and less than or equal to L/5; l/10 is more than or equal to Lb and less than or equal to L/5; l1 is more than or equal to La/5 and less than or equal to La/2.

Specifically, the corresponding sound-insulating material is prepared by using one of nylon, polyester, polyvinylidene chloride and the like, and using a suitable plastic processing method (a conventional molding method and/or a processing and joining method), wherein the engaging concave portion 14 and the engaging convex portion 13 are rectangular shapes which can be embedded. The corresponding material dimensions are as follows: H1H/5H 1H 2 n 3(n is the number of linking protrusions 13), 5H1 < H0 < 6H 1; la/10 Lb, L1 La/3, and the thickness of the sound-insulating material is 10 mm.

In the in-service use process, adopt suitable mode preparation sound insulation material, directly wrap up the material in the air condition compressor outside, press the lock with the linking groove and the linking tenon at material both ends can.

According to the JISA1405 standard, the vertical incidence sound absorption rate of the compressor wrapped with the sound-insulating material is measured, and the product is found to have wide sound absorption peak value and good sound-insulating effect at low and medium frequency sound of about 300Hz-1 kHz. When the diameter d of the closed cells 12 and the interval b of the closed cells 12 are changed, that is, the open porosity is changed, or the thickness of the sound-insulating material is changed, the sound absorption value is changed in a low frequency range.

Conventionally defined, sounds below 500Hz are low frequencies; 500 Hz-2 KHz is the intermediate frequency, and the high frequency is above 2 KHz. Therefore, the sound insulation member provided by the embodiment of the application has a good sound insulation effect on middle and low frequency noise.

In addition, the sound insulation member provided by the embodiment further has the following beneficial effects:

1) through structural design (outside material layer + inside gas filled's closed hole 12), on the basis that the entity material is fallen the noise to sound refraction, reflection, absorption, with the help of the gaseous viscidity resistance of filling in space, further realize the effect of falling the noise, the double-pipe is together, improves the sound absorption rate effect in the low frequency range, further improves the random frequency range simultaneously.

2) Through structural design (material layer + inside gas filling gas layout), on the viscous resistance that utilizes the air realizes syllable-dividing basis, increased sympathetic response (membrane vibration) syllable-dividing effect (resonance is syllable-dividing promptly), effectively improve the syllable-dividing effect of material.

3) And the design of filling gas is adopted, so that under the condition of the same thickness of the sound insulation material, the sound insulation material is saved, the weight of the sound insulation material is reduced, and the load of the whole machine is reduced.

4) Adopt same material, avoid tying up the use in-process, lead to the sound insulation to reduce the problem that even became invalid by a wide margin because of the material is different.

5) By adopting the design of the engaging concave part 14 and the engaging convex part 13, the bundling procedure is avoided, and the production efficiency is improved; the binding force is prevented from varying from person to person, and the product effect is prevented from being differentiated; the problem of hardening vibration caused by over-tight binding is avoided, and the sound insulation effect is influenced.

6) The design of closely knit external material layer has avoided in the use, and the compressor comdenstion water adsorbs the problem that influences syllable-dividing effect.

Detailed description of the utility model

As shown in fig. 5 to 7, this embodiment provides a soundproofing member including a soundproofing body 1. The sound insulation main body 1 is a flexible integrated structure and is in a rectangular plate shape. A resonance sound insulation area 11 is arranged in the sound insulation main body 1, and a plurality of cylindrical closed holes 12 are uniformly distributed in the resonance sound insulation area 11 in an array mode. The closed hole 12 is vacuumized and has a certain vacuum degree (the pressure is not higher than 0.9 standard atmospheric pressure). The two ends of the sound insulation main body 1 are provided with the connecting convex parts 13 and the connecting concave parts 14, and the sound insulation piece can be fixed into a cylindrical structure in a buckling and pressing mode without binding. In the use, with this sound insulating part direct parcel in the compressor outside of air conditioner can.

Here, as shown in fig. 5 and 6, L is the length of the single-piece insulator, i.e., the length of the insulator body 1, and is determined according to the circumferential dimension of the wrapped compressor. La and Lb are distances from the edges of the closed hole 12 in the longitudinal direction of the soundproof body 1. H0 is the width of a single sheet of insulation. L1 is the projection length of the engaging projection 13. H1 is the distance between the engaging projection 13 and the edge of the soundproofing body 1 in the width direction. H2 is the distance between two adjacent engaging projections 13 in the width direction of the sound insulating member. Hn is the width of any of the engaging projections 13 in the width direction of the soundproof body 1. h1 is the distance of the closed hole 12 from the edge in the width direction of the soundproof body 1. d is the diameter of the closed hole 12, and b is the distance between two adjacent closed holes 12 in the width direction of the sound-insulating main body 1.

Wherein, 1) d/2 is more than or equal to b and less than or equal to 2 d; d/2 is more than or equal to h1 and is more than or equal to 2 d; d is more than or equal to h/100 and less than or equal to h/3; 2) h1 is more than or equal to H0/10 and less than H0/2; hn is more than or equal to H0/10 and less than H0/2; h2 is more than 0 and less than 2 Hn; 3) la is more than or equal to L/10 and less than or equal to L/5; l/10 is more than or equal to Lb and less than or equal to L/5; l1 is more than or equal to La/5 and less than or equal to La/2.

Specifically, one of aluminum foil, nylon, polyester, polyvinylidene chloride and the like is used, and a vacuum mold is used to prepare the corresponding sound insulation material, wherein the engaging concave portion 14 and the engaging convex portion 13 are rectangular shapes which can be embedded. The corresponding material dimensions are as follows: H1H/5, H1H 2, n 3(n is the number of linking projections 13), 5H1 < H0 < 6H 1; la/10 Lb, L1 La/3, and the thickness of the sound-insulating material is 10 mm.

In the in-service use process, according to above-mentioned size and specification preparation vacuum mold, preparation sound insulation material directly wraps up the material in the air condition compressor outside, with the material both ends join the groove and join the tenon and press the lock can.

According to the JISA1405 standard, the vertical incidence sound absorption rate of the compressor wrapped with the sound insulating material is measured, and the product has wide sound absorption peak value at low and medium frequency sound of about 400Hz-1kHz and good sound insulating effect. When the diameter d of the closed cells 12 and the interval b of the closed cells 12 are changed, that is, the open porosity is changed, or the thickness of the sound-insulating material is changed, the sound absorption value is changed in a low frequency range.

Therefore, the sound insulation member provided by the embodiment of the application has a good sound insulation effect on middle and low frequency noise.

1) through the structural design (the compact external material layer and the closed holes 12 with a certain vacuum degree), when noise is transmitted to the sound insulation material, the noise reduction function is realized through refraction, reflection and absorption of the compact material layer; and then, the effect of noise reduction is realized by means of the reduction of low vacuum degree (air rarefied) and sound transmission media in the holes, the sound absorption rate effect in the middle and low frequency ranges is improved by means of the double pipes, and meanwhile, the effect of improving the sound absorption rate in any frequency range is further realized by corresponding to the structural size design.

2) With the prolonging of time, the aging phenomenon of the material inevitably occurs, air permeates into the material, the vacuum degree of the internal gap is increased, the original 'vacuum noise reduction' is changed into 'viscous resistance of the air to realize the sound absorption' + 'resonance (membrane vibration) sound insulation effect', and the sound insulation effectiveness of the product and the service life of the material are effectively prolonged.

3) The design of the engaging concave part 14 and the engaging convex part 13 is adopted, so that the bundling process is avoided, and the production efficiency is improved; the binding force is prevented from varying from person to person, and the product effect is prevented from being differentiated; the problem of hardening vibration caused by over-tight binding is avoided, and the sound insulation effect is influenced.

In summary, the sound insulation member provided by the embodiment of the utility model has the sound insulation main body made of the dense material, and the dense material can effectively refract, reflect and absorb the high-frequency sound wave, so that a good noise reduction effect is achieved on the high-frequency sound wave. And the sound wave of the middle and low frequency penetrates through the surface of the sound insulation main body and then enters the closed holes of the resonance sound insulation area, the closed holes can resonate, the energy of the sound wave of the low frequency is consumed, the sound wave of the middle and low frequency is limited in the resonance sound insulation area, and therefore a good noise reduction effect is achieved on the sound wave of the middle and low frequency. Like this, give sound insulation the main part with seal the hole dual-pipe together, can play better noise reduction effect to high frequency sound wave, also can play better noise reduction effect to the middle and low frequency sound wave to improve the rate of sound absorption of arbitrary frequency range sound wave, be favorable to improving the noise problem of electrical equipment such as air conditioner, and then improve user's use and experience.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An acoustic insulator, comprising:

the main part gives sound insulation, the main part that gives sound insulation is closely knit material, be equipped with the resonance sound insulation district in the main part that gives sound insulation, the resonance sound insulation district is equipped with the closed hole.

2. The baffle member as claimed in claim 1,

the closed holes are normal pressure holes or positive pressure holes.

3. The baffle member as claimed in claim 1,

the closed hole is a negative pressure hole.

4. The sound insulator as claimed in any one of claims 1 to 3,

the closed hole is spherical, ellipsoidal or cylindrical.

5. The sound insulator as claimed in any one of claims 1 to 3,

the number of the closed holes is multiple, and the closed holes are distributed in rows and/or columns in the resonance sound insulation area.

6. The baffle member as recited in claim 5,

the sound insulation main body is of a rectangular plate-shaped structure, and the section of the closed hole on the cross section of the sound insulation main body is circular;

noting that the dimension of the resonance sound insulation region in the width direction of the sound insulation main body is h, the minimum distance between the edge of the sound insulation main body in the width direction and the closed hole is h1, the diameter of the closed hole in the width direction of the sound insulation main body is d, the distance between two adjacent closed holes in the width direction of the sound insulation main body is b, and the h, the h1, the d and the b satisfy the following relations: d/2 is more than or equal to b is less than or equal to 2 d; d/2 is more than or equal to h1 and is more than or equal to 2 d; d is more than or equal to h/100 and less than or equal to h/3;

based on the closed holes are normal-pressure holes or positive-pressure holes, the distance between every two adjacent closed holes in the length direction of the sound insulation main body is written as Lc, and the Lc and the d satisfy the following relations: and d/2 is more than or equal to Lc and less than or equal to d.

7. The sound insulator as claimed in any one of claims 1 to 3,

the flexible platelike structure of the main part formula that gives sound insulation as an organic whole, the both ends of the main part that gives sound insulation are equipped with the linking convex part and the linking concave part of looks adaptation, link up the convex part with it sets up to make through unsmooth cooperation to link up the concave part the sound insulation encloses and establishes into the tubular structure.

8. The baffle member as recited in claim 7,

the sound insulation main body is of a rectangular plate-shaped structure, and the engaging convex part and the engaging concave part are arranged at two ends of the sound insulation main body in the length direction; wherein:

the minimum distance between the edge of the sound insulation main body in the length direction and the closed hole is La, and the protruding height of the connecting convex part is L1; the L1 and the La satisfy the following relation: l1 is more than or equal to La/5 and less than or equal to La/2; and/or

The number of the connecting convex parts is multiple, and the connecting convex parts are distributed at intervals along the width direction of the sound insulation main body; note that a width of the sound insulating body is H0, a minimum distance between an edge of the sound insulating body in the width direction and the engaging protrusion is H1, a minimum distance between adjacent two of the engaging protrusions is H2, a dimension of the engaging protrusion in the width direction of the sound insulating body is Hn, and the H0, the H1, the H2, and the Hn satisfy the following relationship: h1 is more than or equal to H0/10 and less than H0/2; h2 is more than 0 and less than 2 Hn; hn is more than or equal to H0/10 and less than H0.

9. The sound insulator as claimed in any one of claims 1 to 3,

the sound insulation main body is of a rectangular plate-shaped structure, the length of the sound insulation main body is L, the minimum distance between one edge of the sound insulation main body in the length direction and the closed hole is La, the minimum distance between the other edge of the sound insulation main body in the length direction and the closed hole is Lb, and L, La and Lb satisfy the following relations:

L/10≤La≤L/5；L/10≤Lb≤L/5。

10. the sound insulator as claimed in any one of claims 1 to 3,

the sound insulation main body is an aluminum foil piece, a nylon piece, a polyester piece or a vinylidene chloride piece.

11. The sound insulator as claimed in any one of claims 1 to 3,

the thickness of the sound insulator is in the range of 1mm to 50 mm.

12. An electrical apparatus, comprising the sound insulator of any one of claims 1 to 11.