Efficient noise reduction structure and electric compressor

Abstract

The utility model discloses an efficient noise reduction structure and an electric compressor, belongs to the technical field of compressors, and aims at solving the problems that an existing noise reduction scheme is complex in structure and high in cost. According to the technical scheme, a compression cavity is formed between a static disc and a movable disc, an exhaust cavity is formed between a rear cover and the static disc, the compression cavity is communicated with the exhaust cavity, an exhaust pipe is arranged in the exhaust cavity, an exhaust channel is formed in the exhaust pipe, and an exhaust hole is formed in the outer wall of the side, close to the static disc, of the exhaust pipe; an exhaust port of the exhaust pipe is fixedly connected with a drainage pipe, the end, away from the exhaust pipe, of the drainage pipe is fixedly connected with a noise reduction device, the middle of the exhaust pipe is fixedly connected with a noise reduction structure, and the overall structure forms an efficient noise reduction system by optimizing the layout of an airflow channel in the silencer; the silencing structures in the exhaust cavity and the exhaust pipe absorb and scatter sound, the drainage pipe and the noise reduction device further optimize airflow, and noise generated by turbulent flow is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and more specifically to a high-efficiency noise reduction structure and an electric compressor. Background Art

[0002] Electric compressors are widely used in air conditioning, refrigeration and other fields due to their structural characteristics and working principles. During operation, the relative revolution of the dynamic electric disc and the electrostatic disc forms a continuous change in the closed volume, achieving the purpose of compressing the gas, and then the compressed gas (refrigerant) is transported to the air conditioning and other heat exchange systems. However, noise is generated during the compressed gas ejection process, and a muffler is usually connected to the gas outlet to solve the noise problem.

[0003] A silencer is recorded in the Chinese utility model patent with application number 202222495113.6. In order to improve the silencer effect, the silencer is connected to the gas outlet, and a sophisticated structure is designed for the silencer, which leads to complex processing and high cost. Therefore, it is necessary to propose a new solution to solve the problem of complex structure and high cost of the existing silencer solution. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an efficient noise reduction structure and an electric compressor, so as to simplify the noise reduction structure and reduce the cost through the structural setting.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a high-efficiency noise reduction structure, including a static plate and a dynamic plate, a compression chamber is formed between the static plate and the dynamic plate, the end of the static plate away from the dynamic plate is detachably connected to a rear cover, an exhaust chamber is formed between the rear cover and the static plate, the compression chamber is communicated with the exhaust chamber, an exhaust pipe is arranged in the exhaust chamber, an exhaust channel is opened inside the exhaust pipe, an exhaust hole is opened on the outer wall of the exhaust pipe on one side close to the static plate, a drainage pipe is fixedly connected to the exhaust port of the exhaust pipe, a noise reduction device is fixedly connected to the end of the drainage pipe away from the exhaust pipe, and a silencer structure is fixedly connected to the middle of the exhaust pipe.

[0006] The utility model is further configured as follows: the silencing structure comprises a silencing pipe, and a silencing channel is provided in the silencing pipe.

[0007] The utility model is further configured as follows: the silencing channel is arranged around the exhaust channel and extends along the extension direction of the exhaust channel, and the silencing channel is an annular cavity structure connected to the exhaust channel.

[0008] The utility model is further configured as follows: the noise reduction device includes a main body, a hollow cavity is provided inside the main body, an air inlet is provided at one end of the main body close to the drainage tube, an air outlet is provided on the side wall of the main body, the air inlet and the air outlet are both connected to the hollow cavity, and an air outlet pipe is fixedly connected to the air outlet of the main body.

[0009] The utility model is further configured as follows: the noise reduction device further comprises a transition portion, the transition portion is located between the air inlet and the hollow cavity, and the inner radial direction of the transition portion gradually increases in a direction close to the hollow cavity.

[0010] The utility model is further configured as follows: a mounting plate for fixing the drainage tube is fixedly connected to one side of the rear cover, and the mounting plate is provided with a drainage connection hole and a bolt connection hole.

[0011] The utility model is further configured as follows: the drainage pipe passes through the drainage connection hole and is fixedly connected to the mounting plate, and the exhaust port of the exhaust pipe is communicated with the drainage pipe; the rear cover is detachably connected with bolts, and the bolts are inserted into the bolt connection holes.

[0012] The utility model is further configured as follows: one end of the air outlet pipe away from the noise reduction device is fixedly connected with a quick connector for connecting to a heat exchange system.

[0013] The utility model also discloses an electric compressor, comprising any one of the above-mentioned high-efficiency noise reduction structures.

[0014] In summary, the utility model has the following beneficial effects:

[0015] By optimizing the layout of the air flow channel inside the muffler, the overall structure forms an efficient noise reduction system. The silencer structure in the exhaust chamber and the exhaust pipe absorbs and scatters the sound, while the drainage pipe and the noise reduction device further optimize the airflow, reduce the noise generated by turbulence, and achieve effective noise suppression. Compared with traditional mufflers, this efficient noise reduction electric compressor uses less material and simpler manufacturing processes, significantly reducing production costs. The structural design of the mounting plate and the rear cover is easier to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure diagram of removing the moving disk of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model without the moving plate and the rear cover;

[0018] Figure 3 This is a cross-sectional view of the utility model without the drainage tube and the noise reduction device;

[0019] Figure 4The structure diagram of removing the moving disk of the utility model Figure 2 ;

[0020] Figure 5 It is a side view of the utility model;

[0021] Figure 6 A cross-sectional view of a noise reduction device.

[0022] In the figure: 1. static plate; 2. rear cover; 3. exhaust pipe; 31. exhaust channel; 32. exhaust hole; 4. drainage pipe; 5. silencer pipe; 51. silencer channel; 6. noise reduction device; 61. main body; 62. transition part; 7. exhaust pipe; 8. mounting plate; 81. drainage connection hole; 82. bolt connection hole; 9. quick connector. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] Example

[0025] like Figure 1-Figure 3As shown, an electric compressor has a high-efficiency noise reduction structure, which includes a stator plate 1 and a moving plate, a compression chamber is formed between the stator plate 1 and the moving plate, an end of the stator plate 1 away from the moving plate is detachably connected to a rear cover 2, an exhaust chamber is formed between the rear cover 2 and the stator plate 1, the compression chamber is connected to the exhaust chamber, an aluminum exhaust pipe 3 is arranged in the exhaust chamber, the density of aluminum is low, and the aluminum pipe is relatively light, which helps to reduce the weight of the entire high-efficiency noise reduction structure and is easier to carry and install, an exhaust channel 31 is opened inside the exhaust pipe 3, a circular exhaust hole 32 is opened on the outer wall of one side of the exhaust pipe 3 close to the stator plate 1, the exhaust hole 32 runs through the exhaust pipe 3, an aluminum drainage pipe 4 is welded at the exhaust port of the exhaust pipe 3, and an end of the drainage pipe 4 away from the exhaust pipe 3 is threadedly connected to an aluminum noise reduction device 6, the drainage pipe 4 guides the airflow into the noise reduction device 6 to reduce the noise generated by turbulence. The middle part of the exhaust pipe 3 is connected in series or integrally formed with a silencer structure. The sealing must be ensured when connected in series. The silencer structure includes an aluminum silencer pipe 5. Aluminum is easy to process and form, which is convenient for manufacturing the exhaust pipe 3 and the silencer pipe 5 that are integrally formed. A silencer channel 51 arranged around the exhaust channel 31 is opened in the silencer pipe 5. The silencer channel 51 extends along the extension direction of the exhaust channel 31. The silencer channel 51 is an annular cavity structure connected to the exhaust channel 31. It has a simple structure and low processing difficulty. Multiple reflections and scattering of sound waves in the silencer channel 51 help to capture and dissipate more sound energy. The shape and layout of the silencer channel 51 can absorb and scatter sound waves, thereby effectively reducing exhaust noise.

[0026] like Figure 4-Figure 6 As shown, the noise reduction device 6 includes a main body 61 and a transition portion 62. A hollow cavity is provided inside the main body 61. An air inlet is provided at one end of the main body 61 close to the drainage tube 4. An air outlet is provided on the side wall of the main body 61. Both the air inlet and the air outlet are connected to the hollow cavity, which can reduce the direct impact of high-pressure gas on the air outlet, thereby further reducing the noise during the gas discharge process. An air outlet pipe 7 is threadedly connected to the air outlet of the main body 61. The air outlet pipe 7 is used to discharge the treated gas. A quick connector 9 is provided at one end of the air outlet pipe 7 away from the noise reduction device 6. The quick connector 9 is used to connect the air outlet pipe 7 with a heat exchange system. The heat exchange system is a vehicle-mounted heat exchange system. The transition portion 62 is located between the air inlet and the hollow cavity. The inner diameter of the transition portion 62 gradually increases in the direction close to the hollow cavity, which helps to smooth the airflow and thus reduce turbulence and noise.

[0027] like Figure 1 , Figure 2 and Figure 4As shown, a mounting plate 8 for fixing the drainage pipe 4 is welded to one side of the rear cover 2, and a circular drainage connection hole 81 and a bolt connection hole 82 are opened on the mounting plate 8, the drainage pipe 4 passes through the drainage connection hole 81, and the portion through which the drainage pipe 4 passes is sleeved with a sealing ring to ensure the sealing effect, the exhaust port of the exhaust pipe 3 is connected with the drainage pipe 4, and the bolts are inserted into the bolt connection holes 82 to be fixed to the rear cover 2, and the mounting plate 8 has sufficient strength to support the entire structure and is fixed by the bolt connection holes 82, which can not only guide the installation path of the drainage pipe 4, provide reliable connection strength, ensure the stability and sealing of the structure, but also improve the stability of the connection of the drainage pipe 4, thereby avoiding additional noise caused by unstable fixation of the drainage pipe 4.

[0028] like Figure 1-Figure 6 As shown, when the electric compressor is working, the static disk 1 and the dynamic disk cooperate to form a compression chamber to compress the gas, and the exhaust pressure is controlled by the exhaust valve. When the gas reaches the preset discharge pressure, it is discharged from the compression chamber to the exhaust chamber, and the compressed gas enters the exhaust pipe 3 through the exhaust chamber. The annular cavity with a built-in silencer structure in the exhaust pipe 3 absorbs and scatters sound waves to effectively reduce noise. The drainage pipe 4 guides the treated gas to the noise reduction device 6 to further optimize the airflow and reduce turbulence to reduce additional noise. Finally, the gas is discharged through the outlet pipe 7 and enters the heat exchange system.

[0029] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An efficient noise reduction structure, comprising a static plate (1) and a dynamic plate, wherein a compression chamber is formed between the static plate (1) and the dynamic plate, wherein an end of the static plate (1) away from the dynamic plate is detachably connected to a rear cover (2), wherein an exhaust chamber is formed between the rear cover (2) and the static plate (1), wherein the compression chamber is in communication with the exhaust chamber, and wherein: An exhaust pipe (3) is arranged in the exhaust cavity, an exhaust passage (31) is provided inside the exhaust pipe (3), an exhaust hole (32) is provided on the outer wall of the exhaust pipe (3) on one side close to the stator (1), a drainage pipe (4) is fixedly connected to the exhaust port of the exhaust pipe (3), a noise reduction device (6) is fixedly connected to one end of the drainage pipe (4) away from the exhaust pipe (3), and a silencer structure is fixedly connected to the middle of the exhaust pipe (3).

2. The high-efficiency noise reduction structure according to claim 1, characterized in that: The silencer structure comprises a silencer pipe (5), and a silencer channel (51) is provided in the silencer pipe (5).

3. The high-efficiency noise reduction structure according to claim 2, characterized in that: The silencing channel (51) is arranged around the exhaust channel (31) and extends along the extension direction of the exhaust channel (31); the silencing channel (51) is an annular cavity structure that is connected to the exhaust channel (31).

4. The high-efficiency noise reduction structure according to claim 2, characterized in that: The noise reduction device (6) comprises a main body (61), a hollow cavity is provided inside the main body (61), an air inlet is provided at one end of the main body (61) close to the drainage pipe (4), an air outlet is provided on the side wall of the main body (61), the air inlet and the air outlet are both connected to the hollow cavity, and an air outlet pipe (7) is fixedly connected to the air outlet of the main body (61).

5. The high-efficiency noise reduction structure according to claim 2, characterized in that: The noise reduction device (6) further comprises a transition portion (62), wherein the transition portion (62) is located between the air inlet and the hollow cavity, and the inner radial direction of the transition portion (62) gradually increases in a direction approaching the hollow cavity.

6. The high-efficiency noise reduction structure according to claim 2, characterized in that: A mounting plate (8) for fixing the drainage tube (4) is fixedly connected to one side of the rear cover (2), and the mounting plate (8) is provided with a drainage connection hole (81) and a bolt connection hole (82).

7. The high-efficiency noise reduction structure according to claim 1, characterized in that: The drainage pipe (4) passes through the drainage connection hole (81) and is fixedly connected to the mounting plate (8), and the exhaust port of the exhaust pipe (3) is connected to the drainage pipe (4); the rear cover (2) is detachably connected with bolts, and the bolts are inserted into the bolt connection holes (82).

8. The high-efficiency noise reduction structure according to claim 4, characterized in that: One end of the air outlet pipe (7) away from the noise reduction device (6) is fixedly connected to a quick connector (9) for connecting to a heat exchange system.

9. An electric compressor, characterized in that: The invention comprises the high-efficiency noise reduction structure as described in any one of claims 1 to 8.

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