Noise reduction acoustic bag of compressor

Abstract

The invention discloses a noise reduction acoustic package of a compressor, which comprises a first noise reduction shell, a second noise reduction shell is arranged on the first noise reduction shell, and a hinge matched with the first noise reduction shell is arranged on one side wall of the second noise reduction shell; the lock catch mechanism is arranged on the second noise reduction shell, and the second noise reduction shell and the first noise reduction shell are clamped through the lock catch mechanism; the split type sound absorption mechanism is arranged between the first noise reduction shell and the second noise reduction shell; according to the noise reduction acoustic bag for the compressor, through a special double-layer structure, a double-layer material, an ingenious buckling and connecting mode, staggered assembly and special surface roughness treatment, the cost of the acoustic bag is reduced, the requirement for assembly precision is reduced, the assembly efficiency is improved, and the effects of reducing noise for multiple times and improving sound insulation and sound absorption are achieved.

Description

Technical Field

[0001] The present invention particularly relates to a noise reduction acoustic package for a compressor. Background Art

[0002] The automobile compressor is a kind of driven fluid machinery that boosts low-pressure gas to high-pressure gas, and is the heart of the refrigeration system. During the operation of the automobile compressor, the rotating piston and inverter will generate high-frequency noise. Because the engine noise of traditional oil vehicles is relatively large, the compressor noise is relatively negligible, so there was not much demand for compressor acoustic packages in the past. However, with the development of technology, people's requirements for riding experience have increased, especially for new energy vehicles, the motor sound itself is small, and the noise can be reduced through design optimization. At this time, the noise transmitted by the compressor is particularly prominent to the driver and passengers, so the demand for compressor noise reduction acoustic packages in the new energy vehicle market is increasing.

[0003] At present, the design schemes of acoustic packages for major OEMs and compressor factories involved in new energy are complicated and numerous, such as using a PA66 shell, an inner layer of EPDM foam, divided into two halves, and using bolts to punch holes for positioning during the assembly process; or an aluminum shell, an inner layer of PU foam, divided into two halves, and using bolts to punch holes for positioning during the assembly process; and only using PU foam and Velcro for bonding. Looking at these design schemes, there are defects such as high cost, low assembly efficiency, or poor sound insulation. In this case, how to develop an acoustic package with low cost, low assembly requirements, high assembly efficiency, and good sound insulation is one of the important tasks of the current domestic new energy industry. For this reason, we propose a noise reduction acoustic package for compressors. Summary of the invention

[0004] The object of the present invention is to provide a noise reduction acoustic package for a compressor, so as to solve the problems of high cost, low assembly efficiency and poor sound insulation effect of the existing acoustic package for compressors mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a noise reduction acoustic package for a compressor, comprising:

[0006] A first noise reduction shell, wherein a second noise reduction shell is disposed on the first noise reduction shell, and a hinge matching with the first noise reduction shell is disposed on one side wall of the second noise reduction shell;

[0007] A locking mechanism is provided on the second noise reduction housing, and the second noise reduction housing is engaged with the first noise reduction housing through the locking mechanism;

[0008] A split sound absorbing mechanism is arranged between the first noise reduction shell and the second noise reduction shell;

[0009] Wherein, the split sound absorbing mechanism comprises a first sound absorbing part and a second sound absorbing part, the first sound absorbing part and the second sound absorbing part are arranged side by side, and the two are matched through a sealing component.

[0010] Preferably, the locking mechanism comprises a locking nose and a snap assembly, the locking nose is fixed on the second noise reduction shell, and the first noise reduction shell is provided with a snap assembly matching with the locking nose.

[0011] Preferably, the snap assembly includes a lock plate, a lock groove and a chamfer; the lock plate is integrally formed with the first noise reduction shell; a lock groove for a lock nose to pass through is provided on the inner side of the lock plate; and a chamfer is provided at one end of the lock plate.

[0012] Preferably, the locking nose and buckle assembly are arranged in pairs along the circumference of the second noise reduction shell, and a plurality of each are arranged.

[0013] Preferably, the sealing assembly comprises a stepped block and a sealing groove, the first sound absorbing part is integrally formed with the stepped block, and the second sound absorbing part is provided with a sealing groove matched with the stepped block.

[0014] Preferably, a plurality of the step blocks and the sealing grooves are provided.

[0015] Preferably, the density of the split sound absorbing mechanism is less than 0.2 g / cm 3 Density, thickness greater than 8mm, the density of the first noise reduction shell and the second noise reduction shell are both 1.1g / cm 3 Density, thickness greater than 1.5mm.

[0016] Preferably, the split sound absorbing mechanism is made of polyurethane foam, and the first noise reduction shell and the second noise reduction shell are both made of ethylene propylene rubber.

[0017] Preferably, the first noise reduction shell and the second noise reduction shell are both provided with anti-slip grooves inside, and the roughness of the anti-slip grooves is greater than Ra9.0.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the proposed noise reduction acoustic package for a compressor has a special double-layer structure, double-layer materials, clever snap-on and connection methods, staggered assembly, and special surface roughness treatment, so that the cost of the acoustic package is reduced, the assembly precision requirements are reduced, the assembly efficiency is improved, and the noise reduction is multiple times, and the sound insulation and sound absorption effects are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the locking mechanism structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the split sound absorbing mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the step block structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the lock nose structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the buckle assembly of the present invention.

[0026] In the figure: 1. first noise reduction shell; 2. second noise reduction shell; 3. hinge; 4. split sound absorbing mechanism; 41. first sound absorbing part; 411. step block; 42. second sound absorbing part; 421. sealing groove; 5. locking mechanism; 51. locking nose; 521. locking plate; 522. locking groove; 523. chamfer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 6 The present invention provides a technical solution: a noise reduction acoustic package for a compressor, comprising:

[0029] A first noise reduction shell 1, on which a second noise reduction shell 2 is arranged, so as to improve the multiple noise reduction effect, and a hinge 3 matching with the first noise reduction shell 1 is arranged on one side wall of the second noise reduction shell 2;

[0030] The locking mechanism 5 is arranged on the second noise reduction housing 2, and the second noise reduction housing 2 is engaged with the first noise reduction housing 1 through the locking mechanism 5, so as to facilitate the quick connection between the first noise reduction housing 1 and the second noise reduction housing 2, thereby improving the assembly efficiency;

[0031] The split sound absorbing mechanism 4 is arranged between the first noise reduction shell 1 and the second noise reduction shell 2, so that the first sound absorbing part 41 and the second sound absorbing part 42 can be replaced and maintained separately at a later stage, and can also be assembled and installed separately;

[0032] Among them, the split sound absorbing mechanism 4 includes a first sound absorbing part 41 and a second sound absorbing part 42, which is convenient for absorbing noise and improving the noise reduction effect. The first sound absorbing part 41 and the second sound absorbing part 42 are arranged side by side, and the two are matched through a sealing component to avoid acoustic packaging gaps and improve the sealing noise reduction effect.

[0033] In this embodiment, preferably, the locking mechanism 5 includes a locking nose 51 and a snap assembly, the locking nose 51 is fixed on the second noise reduction shell 2, and the first noise reduction shell 1 is provided with a snap assembly matching with the locking nose 51, so as to facilitate quick connection.

[0034] In this embodiment, preferably, the snap assembly includes a lock plate 521, a lock groove 522 and a chamfer 523. The lock plate 521 is integrally formed with the first noise reduction shell 1, so as to be integrally formed with the EPDM rubber on the outside. In the case of an interference fit of 0.7-1.3 mm, the ductility of the rubber is utilized to make it easy to assemble, and the production process of separately processing the buckle is saved, thereby increasing production efficiency. A lock groove 522 is provided on the inner side of the lock plate 521 for the lock nose 51 to pass through, and a chamfer 523 is provided at one end of the lock plate 521, so as to facilitate pulling one end of the lock plate 521, so that the lock plate 521 can quickly cooperate with the lock nose 51.

[0035] In this embodiment, preferably, the locking noses 51 and the buckle assemblies are arranged in pairs along the circumference of the second noise reduction shell 2, and a plurality of each are arranged.

[0036] In this embodiment, preferably, the sealing assembly includes a step block 411 and a sealing groove 421. The first sound absorbing part 41 is integrally formed with the step block 411, and the second sound absorbing part 42 is provided with a sealing groove 421 that matches the step block 411. The step block 411 has a stepped height of 6-10 mm and a width of 7-11 mm, which avoids gaps in the acoustic packaging, reduces the transmission of inner sound after assembly, and increases the sound insulation and sound absorption effects.

[0037] In this embodiment, preferably, a plurality of step blocks 411 and a plurality of sealing grooves 421 are provided.

[0038] In this embodiment, preferably, the density of the split sound absorbing mechanism 4 is less than 0.2 g / cm 3 Density, thickness greater than 8mm, the density of the first noise reduction shell 1 and the second noise reduction shell 2 are both 1.1g / cm 3 Density, thickness is greater than 1.5mm, the split sound absorption mechanism 4 is made of polyurethane foam, the first noise reduction shell 1 and the second noise reduction shell 2 are both made of EPDM, and adopt a double-layer structure. Polyurethane foam is used on the inside to achieve good sound absorption, and EPDM is used on the outside to achieve good sound insulation. The sound is emitted from the compressor, first absorbed by the polyurethane foam, then sound-insulated by the EPDM and radiated back to the polyurethane foam, achieving multiple noise reduction effects.

[0039] In the present embodiment, preferably, the first noise reduction shell 1 and the second noise reduction shell 2 are both provided with anti-slip grooves, and the roughness of the anti-slip grooves is greater than Ra9.0. During the polyurethane foaming production process of the rear split sound absorbing mechanism 4, no adhesive is required to firmly bond with the outer layer of EPDM, thereby reducing the production process and the use of environmental pollutants and increasing production efficiency.

[0040] The working principle and use process of the present invention are as follows: when in use, the first sound absorbing part 41 and the second sound absorbing part 42 are matched with each other through the step block 411 and the sealing groove 421. The multiple staggered step blocks 411 and the sealing groove 421 can improve the sealing after connection, reduce the packaging gap, absorb the noise through the first sound absorbing part 41 and the second sound absorbing part 42, and then the second noise reduction shell 2 and the first noise reduction shell 1 are covered on the outer surface of the first sound absorbing part 41 and the second sound absorbing part 42, and then the second noise reduction shell 2 and the first noise reduction shell 1 are matched with the locking nose 51 and the locking groove 522 to quickly fix the second noise reduction shell 2 and the first noise reduction shell 1, and then the second noise reduction shell 2 and the first noise reduction shell 1 are used for sound insulation, and the sound is radiated back to the split sound absorbing mechanism 4, which plays a role of multiple noise reduction. The roughness of the second noise reduction shell 2 and the inside of the first noise reduction shell 1 is greater than Ra9.0, which is convenient for improving the connection stability effect of the first noise reduction shell 1 and the second noise reduction shell 2 with the split sound absorbing mechanism 4, and reducing the movement between the second noise reduction shell 2 and the first noise reduction shell 1.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction acoustic package for a compressor, characterized in that: include: A first noise reduction shell (1), wherein a second noise reduction shell (2) is arranged on the first noise reduction shell (1), and a hinge (3) matching with the first noise reduction shell (1) is arranged on one side wall of the second noise reduction shell (2); A locking mechanism (5) is arranged on the second noise reduction shell (2), and the second noise reduction shell (2) and the first noise reduction shell (1) are engaged with each other through the locking mechanism (5); A split sound absorbing mechanism (4) is arranged between the first noise reduction shell (1) and the second noise reduction shell (2); The split sound absorbing mechanism (4) comprises a first sound absorbing part (41) and a second sound absorbing part (42); the first sound absorbing part (41) and the second sound absorbing part (42) are arranged side by side, and the two are matched with each other through a sealing component.

2. The noise reduction acoustic package for a compressor according to claim 1, characterized in that: The locking mechanism (5) comprises a locking nose (51) and a snap assembly, wherein the locking nose (51) is fixed to the second noise reduction shell (2), and the first noise reduction shell (1) is provided with a snap assembly matching with the locking nose (51).

3. The noise reduction acoustic package for a compressor according to claim 2, characterized in that: The buckle assembly comprises a locking plate (521), a locking groove (522) and a chamfer (523); the locking plate (521) is integrally formed with the first noise reduction shell (1); a locking groove (522) for a locking nose (51) to pass through is provided on the inner side of the locking plate (521); and a chamfer (523) is provided on one end of the locking plate (521).

4. The noise reduction acoustic package for a compressor according to claim 2, characterized in that: The locking noses (51) and buckle assemblies are arranged in pairs along the circumference of the second noise reduction shell (2), and a plurality of each are arranged.

5. The noise reduction acoustic package for a compressor according to claim 1, characterized in that: The sealing assembly comprises a stepped block (411) and a sealing groove (421); the first sound absorbing part (41) is integrally formed with the stepped block (411); and the second sound absorbing part (42) is provided with a sealing groove (421) matching with the stepped block (411).

6. The noise reduction acoustic package for a compressor according to claim 5, characterized in that: The step blocks (411) and the sealing grooves (421) are both provided in plurality.

7. The noise reduction acoustic package for a compressor according to claim 1, characterized in that: The split sound absorbing mechanism (4) has a density of less than 0.2 g / cm 3 density, thickness greater than 8 mm, the density of the first noise reduction shell (1) and the second noise reduction shell (2) are both 1.1 g / cm 3 Density, thickness greater than 1.5mm.

8. The noise reduction acoustic package for a compressor according to claim 1, characterized in that: The split sound absorption mechanism (4) is made of polyurethane foam, and the first noise reduction shell (1) and the second noise reduction shell (2) are both made of ethylene propylene rubber.

9. The noise reduction acoustic package for a compressor according to claim 1, characterized in that: The first noise reduction shell (1) and the second noise reduction shell (2) are both provided with anti-slip grooves inside, and the roughness of the anti-slip grooves is greater than Ra9.0.

Images