Rotary air passage noise reduction structure of end cover

Abstract

The utility model relates to the technical field of automobile air conditioner compressors, in particular to a rotary air passage noise reduction structure of an end cover, which comprises an end cover body, an inner cavity and an outer cavity are respectively arranged in the end cover body, and the inner cavity is communicated with the outer cavity through a rectangular groove; a drainage baffle is arranged in the inner cavity and located at the communicating position of the inner cavity and the outer cavity. According to the scheme, the inner cavity and the outer cavity are designed in the end cover, and the rectangular groove is designed between the inner cavity and the outer cavity for communication, so that the speed of entering airflow can be effectively reduced, noise generated by violent friction between the airflow and the wall surface of the cavity due to too high airflow speed is greatly reduced, and the working environment in an automobile is effectively improved; and a quiet and comfortable space is created for drivers and passengers.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning compressor technology, specifically to a noise reduction structure for a rotating air passage of an end cap. Background Technology

[0002] The automotive air conditioning compressor is the heart of the automotive air conditioning system, playing the role of compressing and transporting refrigerant vapor. Traditionally, automotive air conditioning compressors are driven by the car engine. With the development of solar power generation technology, automotive air conditioning compressors can also be driven by electric motors. When the automotive air conditioning compressor is driven by the engine's thermal power source, the driving speed is about 2000 rad / min, while the electric drive speed of the scroll compressor can reach 3000 to 6000 rad / min, which can effectively increase the displacement of the automotive air conditioning system.

[0003] Existing compressors generate high-pressure, high-temperature compressed gas during operation. This compressed gas produces significant noise as it passes through the cavity, which not only severely affects the working environment but may also damage the hearing of operators if they are exposed to it for a long time.

[0004] In summary, the applicant proposed a noise reduction structure for the rotating airway of the end cap. Utility Model Content

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0006] A rotary airway noise reduction structure for an end cap includes an end cap body, wherein an inner cavity and an outer cavity are respectively opened in the end cap body, and the inner cavity and the outer cavity are connected by a rectangular groove.

[0007] Furthermore, a drainage baffle is provided inside the inner cavity, and the drainage baffle is located at the connection between the inner cavity and the outer cavity.

[0008] Furthermore, the drainage baffle is configured as an arc-shaped curved surface structure, and the radius R of the curved surface is set to 10-15mm.

[0009] Furthermore, the inner wall of the outer cavity is provided with wavy silencing protrusions, and the height of the wavy silencing protrusions is set to 2-5mm.

[0010] After improvement, this utility model further produces the following beneficial effects:

[0011] 1. By designing an inner and outer cavity in the end cap and connecting them with a rectangular groove, the incoming airflow speed can be effectively reduced, greatly reducing the noise caused by the intense friction between the airflow speed and the cavity wall. This effectively improves the working environment inside the car and creates a quieter and more comfortable space for drivers and passengers.

[0012] 2. By setting up the flow guide baffle, when the airflow comes into contact with the curved surface of the flow guide baffle, it smoothly changes its flow direction along the contour of the surface, avoiding violent airflow disturbance and vortex generation, so that the airflow can flow more smoothly, that is, the turbulence of the airflow is significantly reduced, and correspondingly, the noise is further controlled.

[0013] 3. By setting up the wave-shaped noise-absorbing protrusions, the friction area and friction time between the airflow and the protruding surface are increased. According to the law of conservation of energy, this friction will consume part of the energy of the airflow, thereby reducing the speed of the airflow. As the speed of the airflow decreases, the energy it carries decreases, and its ability to generate noise also weakens. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of this utility model.

[0015] Figure 2 A three-dimensional structural schematic diagram that provides another perspective on this utility model.

[0016] Figure 3 A schematic front view of the structure provided for this utility model.

[0017] The components include: 1. End cap body; 2. Inner cavity; 3. Outer cavity; 4. Rectangular groove; 5. Drainage baffle; 6. Wavy silencing protrusion. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, a rotary airway noise reduction structure for an end cap includes an end cap body 1, wherein an inner cavity 2 and an outer cavity 3 are respectively opened in the end cap body 1, and the inner cavity 2 and the outer cavity 3 are connected by a rectangular groove 4.

[0020] It should be noted that the width of the rectangular groove is set to 8-12mm, the length is set to 15-20mm, and the depth is consistent with the thickness of the end cap body 1, forming an airflow buffer channel. This design can play a preliminary buffering role on the airflow, reduce the airflow speed, and provide better conditions for subsequent noise reduction steps.

[0021] The inner cavity 2 is provided with a drainage baffle 5, and the drainage baffle 5 is located at the connection between the inner cavity 2 and the outer cavity 3.

[0022] The drainage baffle 5 is configured with an arc-shaped curved surface structure, and the radius R of the curved surface is set to 10-15mm.

[0023] It should be noted that the drainage baffle 5 is made of aluminum alloy or engineering plastic, and the arc shape can also take other forms. The drainage baffle can guide the airflow direction, so that the airflow flows more smoothly from the inner cavity to the outer cavity, and avoids the airflow from becoming turbulent at the connection point, which would aggravate the noise.

[0024] In addition, the curved surface structure of the baffle can further optimize the airflow path, allowing the airflow to flow smoothly along the curved surface and reducing the noise generated by airflow impact. At the same time, the baffle is made of aluminum alloy or engineering plastic, both of which have certain strength and corrosion resistance, and can adapt to the working environment inside the compressor while ensuring the noise reduction function.

[0025] The inner wall of the outer cavity 3 is provided with a wave-shaped noise-absorbing protrusion 6, and the height of the wave-shaped noise-absorbing protrusion 6 is set to 2-5mm.

[0026] It should be noted that the wave-shaped noise-absorbing protrusion 6 can increase the friction area between the airflow and the inner wall of the outer cavity, causing the airflow to consume more energy during the flow process, thereby reducing the airflow speed and further reducing noise.

[0027] The specific working method is described below using specific embodiments:

[0028] Example 1:

[0029] When the car air conditioning compressor is running, compressed gas enters the inner cavity of the end cover body at a certain speed. First, the gas passes through the rectangular groove. Due to the buffering effect of the rectangular groove, the gas speed is reduced. Then, the gas encounters the flow guide baffle. The flow guide baffle guides the gas to flow smoothly into the outer cavity along its arc-shaped surface. In the outer cavity, the gas contacts the wave-shaped sound-absorbing protrusions on the inner wall. By increasing friction and consuming energy, the speed is further reduced, thereby effectively reducing noise.

[0030] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A rotary airway noise reduction structure for an end cap, characterized in that: It includes an end cap body (1), and an inner cavity (2) and an outer cavity (3) are respectively opened in the end cap body (1). The inner cavity (2) and the outer cavity (3) are connected by a rectangular groove (4).

2. The noise reduction structure for the rotating air passage of an end cap according to claim 1, characterized in that: The inner cavity (2) is provided with a drainage baffle (5), and the drainage baffle (5) is located at the connection between the inner cavity (2) and the outer cavity (3).

3. The noise reduction structure for the rotating air passage of an end cap according to claim 2, characterized in that: The drainage baffle (5) is configured as an arc-shaped curved surface structure, and the radius R of the curved surface is set to 10-15mm.

4. The noise reduction structure for the rotating air passage of an end cap according to claim 1, characterized in that: The inner wall of the outer cavity (3) is provided with a wave-shaped noise-absorbing protrusion (6), and the height of the wave-shaped noise-absorbing protrusion (6) is set to 2-5mm.

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