Silencer of air conditioner compressor

Abstract

The utility model relates to the technical field of compressors, and discloses an air conditioner compressor silencer which comprises a bottom cover, an upper cover, an outer frame and a sound absorption mechanism, the outer frame and the sound absorption mechanism are installed between the bottom cover and the upper cover, a sound absorption layer is installed between the outer frame and the sound absorption mechanism, and the bottom cover is connected to the bottom of the outer frame in a threaded mode. The inner wall of the sound absorption net frame of the inner ring of the sound absorber is provided with the first sound absorption holes in the shape of a circular truncated cone, sound waves are guided to be reflected and scattered for multiple times in the holes, and therefore the contact area between the sound waves and the hole walls is increased, the contact time between the sound waves and the hole walls is prolonged, and the sound absorption performance is improved. The sound wave is guided again to generate multiple times of reflection and scattering in the sound absorption plate, the sound absorption performance is further improved, the sound absorption effect of the sound absorber is further effectively improved, the sound absorber which is small in size and short in sound wave circulation path can still have the high sound absorption effect, and the problem that a current sound absorber occupies space when installed in a compressor is solved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a muffler for an air conditioning compressor, specifically an air conditioning compressor muffler. Background Technology

[0002] The air conditioner compressor plays a crucial role in the refrigerant circuit, compressing and driving the refrigerant. It is typically located in the outdoor unit. The compressor draws refrigerant from the low-pressure zone, compresses it, and sends it to the high-pressure zone for cooling and condensation. Heat is then released into the air through the heat exchange fins, causing the refrigerant to change from a gaseous to a liquid state, increasing its pressure.

[0003] The silencer of the air conditioner compressor is mainly used to reduce the noise generated by the air conditioner compressor during operation and improve the user experience.

[0004] A search revealed that patent application number CN201420143573.5 discloses a silencer for silencing the compressor of an air conditioner. It includes two constricted sections and a middle section located between the two constricted sections, wherein the middle section is a U-shaped tubular structure. In the silencer provided by this utility model, the middle section located between the two constricted sections and used for noise reduction is a U-shaped tubular structure. Compared with traditional silencers with a straight middle section, this type of silencer, with the same overall length, has a longer middle section due to its curved tube structure. This further meets the requirements for noise reduction in terms of middle section length, not only reducing the limitation of installation space on the silencer length but also avoiding the need to increase the number of silencers and thus production costs. More importantly, it further improves the noise reduction effect on the air conditioning refrigeration system.

[0005] To improve noise reduction, existing air conditioner compressor mufflers increase the flow and time of sound waves within the muffler, thus increasing its length. This means the internal structure of current mufflers needs improvement. They are bulky and take up considerable space when installed in the compressor. Therefore, we need to propose an air conditioner compressor muffler. Utility Model Content

[0006] The purpose of this utility model is to provide an air conditioner compressor muffler. Through the design of the sound absorption mechanism, the inner wall of the sound-absorbing mesh frame of the inner ring of the muffler is opened with a frustum-shaped first sound-absorbing hole, which guides the sound waves to generate multiple reflections and scatterings in the hole, thereby increasing the contact area and time between the sound waves and the hole wall, and thus improving the sound absorption performance. Furthermore, a funnel-shaped sound-absorbing plate with a second sound-absorbing hole is installed in the inner frame, which again guides the sound waves to generate multiple reflections and scatterings in the sound-absorbing plate, further improving the sound absorption performance. This effectively enhances the sound absorption effect of the muffler, allowing the small-volume muffler with a short sound wave flow path to still have a strong sound absorption effect. This solves the problem that current mufflers occupy a lot of space when installed in the compressor, thus addressing the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an air conditioner compressor muffler, comprising a bottom cover, a top cover, an outer frame installed between the bottom cover and the top cover, and a sound-absorbing mechanism, wherein a sound-absorbing layer is installed between the outer frame and the sound-absorbing mechanism, the bottom cover is threadedly connected to the bottom of the outer frame, and the top cover is detachably installed on the top of the outer frame;

[0008] The sound-absorbing mechanism includes an annular inner frame, with frustum-shaped first sound-absorbing holes evenly distributed on the side wall of the inner frame, and multiple sound-absorbing panels installed vertically at equal intervals on the inner wall of the inner frame. The sound-absorbing panels are funnel-shaped, and multiple second sound-absorbing holes are opened on the inner frame.

[0009] Preferably, the outer frame includes an annular mesh frame, with a first ring welded to the bottom of the mesh frame and a second ring welded to the top of the mesh frame.

[0010] Preferably, the outer wall of the first ring is provided with external threads, the inner wall of the bottom cover is provided with internal threads, and the first ring is threadedly installed inside the bottom cover.

[0011] Preferably, the top of the second ring is connected to a threaded post, the upper cover has a through hole, and the top of the threaded post is threadedly connected to a nut through the through hole.

[0012] Preferably, the inner walls of the first ring and the second ring are both connected to a first limiting strip, the sound-absorbing layer is configured as a ring-shaped sound-absorbing layer, the outer wall of the sound-absorbing layer is provided with a first limiting groove, and the first limiting strip is engaged inside the first limiting groove.

[0013] Preferably, the outer wall of the inner frame is connected to a second limiting strip, and the inner wall of the sound-absorbing layer is provided with a second limiting groove, and the second limiting strip is engaged inside the second limiting groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through the design of a sound-absorbing mechanism, features a frustum-shaped first sound-absorbing hole on the inner wall of the sound-absorbing mesh frame within the sound absorber. This guides sound waves to undergo multiple reflections and scatterings within the hole, thereby increasing the contact area and time between the sound waves and the hole wall, thus improving sound absorption performance. Furthermore, a funnel-shaped sound-absorbing plate with a second sound-absorbing hole is installed within the inner frame, further guiding sound waves to undergo multiple reflections and scatterings within the sound-absorbing plate, further enhancing sound absorption performance. This effectively improves the sound absorption effect of the sound absorber, allowing a small-volume sound absorber with a short sound wave flow path to still have a strong sound absorption effect. It also solves the problem of current sound absorbers taking up a lot of space when installed in a compressor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the sound-absorbing plate and the second sound-absorbing hole of this utility model.

[0019] In the diagram: 1. Bottom cover; 2. Outer frame; 21. Mesh frame; 22. First ring; 23. Second ring; 24. First limiting strip; 25. Threaded post; 3. Top cover; 31. Through hole; 32. Nut; 4. Sound absorption mechanism; 41. Inner frame; 42. Second limiting strip; 43. First sound absorption hole; 44. Sound absorption plate; 45. Second sound absorption hole; 5. Sound absorption layer; 51. First limiting groove; 52. Second limiting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution: an air conditioner compressor muffler, including a bottom cover 1, a top cover 3, an outer frame 2 installed between the bottom cover 1 and the top cover 3, and a sound-absorbing mechanism 4. The sound-absorbing mechanism 4 is used to effectively reduce the noise generated by the compressor operation. A sound-absorbing layer 5 is installed between the outer frame 2 and the sound-absorbing mechanism 4. The bottom cover 1 is threaded to the bottom of the outer frame 2, and the top cover 3 is detachably installed on the top of the outer frame 2. The sound-absorbing layer 5 is selected from any one of wood fiber sound-absorbing layer, mineral wool sound-absorbing layer, fabric sound-absorbing layer, polyester fiber sound-absorbing layer, wood sound-absorbing layer, metal sound-absorbing layer, and sound insulation felt. The structure and sound absorption principle of the above-mentioned sound-absorbing layers are all existing technologies and will not be described in detail here.

[0022] The sound-absorbing mechanism 4 includes an annular inner frame 41. The inner frame 41 has frustum-shaped first sound-absorbing holes 43 evenly distributed on its side wall. The inner wall of the inner frame 41 has multiple sound-absorbing plates 44 installed vertically at equal intervals. The sound-absorbing plates 44 are funnel-shaped. The inner frame 41 has multiple second sound-absorbing holes 45.

[0023] When noise enters the first sound-absorbing hole 43, it guides the sound waves to undergo multiple reflections and scatterings within the first sound-absorbing hole 43, thereby increasing the contact area and time between the sound waves and the hole wall of the first sound-absorbing hole 43, and thus improving the sound absorption performance.

[0024] Noise will pass through the horn-shaped sound-absorbing plate 44, guiding the sound waves to undergo multiple reflections and scatterings in the second sound-absorbing hole 45, thereby increasing the contact area and time between the sound waves and the hole wall of the second sound-absorbing hole 45, and further improving the sound absorption performance.

[0025] The outer frame 2 includes an annular mesh frame 21, with a first ring 22 welded to the bottom of the mesh frame 21 and a second ring 23 welded to the top of the mesh frame 21. The first ring 22 and the second ring 23 are the same size.

[0026] The outer wall of the first ring 22 is provided with an external thread, and the inner wall of the bottom cover 1 is provided with an internal thread. The first ring 22 is threadedly installed inside the bottom cover 1, and the connection between the bottom cover 1 and the first ring 22 is achieved through the cooperation of the external thread and the internal thread.

[0027] The top of the second ring 23 is connected to a threaded post 25. Three threaded posts 25 are arranged in a ring at equal intervals. The upper cover 3 has three through holes 31 corresponding to the threaded posts 25. The top of the threaded post 25 passes through the through hole 31 and is threaded to a nut 32, so as to fix the upper cover 3 on the second ring 23.

[0028] The inner walls of the first ring 22 and the second ring 23 are both connected to the first limiting strip 24. The sound-absorbing layer 5 is a ring-shaped sound-absorbing layer. The outer wall of the sound-absorbing layer 5 is provided with a first limiting groove 51. The first limiting strip 24 is engaged inside the first limiting groove 51, which facilitates the installation of the sound-absorbing layer 5 into the inner wall of the outer frame 2 and increases the stability of the installation of the sound-absorbing layer 5 and the outer frame 2.

[0029] The outer wall of the inner frame 41 is connected to a second limiting strip 42, and the inner wall of the sound-absorbing layer 5 is provided with a second limiting groove 52. The second limiting strip 42 is engaged inside the second limiting groove 52, which facilitates the installation of the sound-absorbing mechanism 4 into the sound-absorbing layer 5 and increases the stability of the installation of the sound-absorbing mechanism 4 and the sound-absorbing layer 5.

[0030] When assembling the muffler of this air conditioner compressor, the sound-absorbing mechanism 4 is securely installed inside the sound-absorbing layer 5 through the second limiting strip 42 and the second limiting groove 52. Then, the sound-absorbing layer 5 is securely installed inside the outer frame 2 through the first limiting strip 24 and the first limiting groove 51, thus connecting the outer frame 2, the sound-absorbing mechanism 4, and the sound-absorbing layer 5. Then, the bottom cover 1 is threaded onto the first ring 22 at the bottom of the outer frame 2, and the top cover 3 is placed on the second ring 23. The threaded post 25 passes through the through hole 31, and finally, the nut 32 is threaded onto the threaded post 25 to fasten the top cover 3.

[0031] During use, the noise generated by the compressor enters from the direction of the upper cover 3 of the muffler. The noise enters the first sound-absorbing hole 43, guiding the sound waves to undergo multiple reflections and scatterings within the first sound-absorbing hole 43. This increases the contact area and time between the sound waves and the hole wall of the first sound-absorbing hole 43, thereby improving the sound absorption performance. At the same time, the noise will pass through the horn-shaped sound-absorbing plate 44 (such as...). Figure 3 As shown, the inner wall of the sound-absorbing plate 44 is inclined. Similarly, the sound waves are guided to undergo multiple reflections and scatterings in the second sound-absorbing hole 45, thereby increasing the contact area and time between the sound waves and the hole wall of the second sound-absorbing hole 45, and further improving the sound absorption performance. Through the optimization and improvement of the sound absorption mechanism 4, even if the sound waves travel a short time and distance in the silencer, they can still play a good sound absorption role. The volume of the silencer can be reduced to a certain extent, making it easier to install it in the compressor.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air conditioner compressor muffler, characterized in that: It includes a bottom cover (1), a top cover (3), an outer frame (2) installed between the bottom cover (1) and the top cover (3), and a sound-absorbing mechanism (4). A sound-absorbing layer (5) is installed between the outer frame (2) and the sound-absorbing mechanism (4). The bottom cover (1) is threaded to the bottom of the outer frame (2), and the top cover (3) is detachably installed on the top of the outer frame (2). The sound-absorbing mechanism (4) includes an annular inner frame (41), and frustum-shaped first sound-absorbing holes (43) are evenly distributed on the side wall of the inner frame (41). Multiple sound-absorbing plates (44) are vertically and equally spaced on the inner wall of the inner frame (41). The sound-absorbing plates (44) are funnel-shaped. Multiple second sound-absorbing holes (45) are opened on the inner frame (41).

2. The air conditioner compressor muffler according to claim 1, characterized in that: The outer frame (2) includes an annular mesh frame (21), with a first ring (22) welded to the bottom of the mesh frame (21) and a second ring (23) welded to the top of the mesh frame (21).

3. The air conditioner compressor muffler according to claim 2, characterized in that: The outer wall of the first ring (22) is provided with an external thread, and the inner wall of the bottom cover (1) is provided with an internal thread. The first ring (22) is threadedly installed inside the bottom cover (1).

4. The air conditioner compressor muffler according to claim 3, characterized in that: The top of the second ring (23) is connected to a threaded post (25), and the upper cover (3) has a through hole (31). The top of the threaded post (25) passes through the through hole (31) and is threaded to a nut (32).

5. The air conditioner compressor muffler according to claim 4, characterized in that: The inner walls of the first ring (22) and the second ring (23) are both connected to a first limiting strip (24). The sound-absorbing layer (5) is a ring-shaped sound-absorbing layer. The outer wall of the sound-absorbing layer (5) is provided with a first limiting groove (51). The first limiting strip (24) is engaged inside the first limiting groove (51).

6. The air conditioner compressor muffler according to claim 1, characterized in that: The outer wall of the inner frame (41) is connected to a second limiting strip (42), and the inner wall of the sound-absorbing layer (5) is provided with a second limiting groove (52), and the second limiting strip (42) is engaged inside the second limiting groove (52).

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