Air suction silencer with built-in airflow guide plate

Abstract

The utility model discloses an inspiration silencer with a built-in airflow guide plate, which comprises an inspiration silencer body, an air inlet pipe is fixedly connected to the surface of one end of the inspiration silencer body close to the lower end, an air outlet pipe is fixedly connected to the upper surface of the inspiration silencer body, a silencing structure is arranged in the inspiration silencer body, and the airflow guide plate is arranged in the silencing structure. The noise reduction structure comprises a noise reduction pipe, a spiral airflow guide plate, a connecting pipe, a noise reduction tank, a first conical airflow guide pipe, first sound absorption cotton, a first barrier plate, a first round hole, a second conical airflow guide pipe, second sound absorption cotton, a second barrier plate and a second round hole. According to the air suction silencer with the built-in air flow guide plate, air flow of a compressor can enter the silencing pipe to consume part of energy, then the air flow enters the silencing tank through the connecting pipe, the air flow of the compressor is consumed step by step, and therefore silencing of the air flow is achieved, and finally the air flow enters the air outlet pipe through the upper end of the silencing tank to be exhausted.

Description

Technical Field

[0001] This utility model relates to the field of air intake silencers, and in particular to an air intake silencer with a built-in airflow guide plate. Background Technology

[0002] While household refrigerators bring us convenience, they also bring us troubles. The impact of refrigerator unit noise on the environment and the room where it is used has become a concern. As the heart of the refrigerator, the compressor is the main source of noise. Its noise originates from the friction and impact between moving parts, or from the eddies generated during gas flow. For example, "a refrigerator compressor muffler with publication number CN110145453A is characterized by comprising: a muffler pipe and a rectifier pipe, one end of the muffler pipe being an air inlet, the air outlet of the muffler pipe being connected to the air inlet of the rectifier pipe, and the inner cavity of the muffler pipe having at least one bend." The structure is as follows: Multiple flow dividers extending from the axis of the rectifier tube to its inner wall are provided inside the rectifier tube, and the flow dividers are fixedly connected to the rectifier tube. When the refrigerator compressor muffler is in use, the compressed airflow from the compressor enters the muffler tube from the inlet end, passes through the bending structure inside the muffler tube for noise reduction, and then enters the rectifier tube to solve the problem of excessive amplitude caused by turbulent airflow, further improving the noise reduction effect. Finally, the compressed airflow is discharged from the outlet end of the rectifier tube. However, this muffler has a simple structure, with airflow flowing from bottom to top, resulting in a simple noise reduction mode that cannot effectively utilize the structure of the gas flow channel for noise reduction. Utility Model Content

[0003] The purpose of this invention is to provide an intake silencer with a built-in airflow guide plate, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An intake silencer with a built-in airflow guide plate includes an intake silencer body. An air inlet pipe is fixedly connected to one end surface of the intake silencer body near its lower end. An air outlet pipe is fixedly connected to the upper surface of the intake silencer body. An internal silencing structure is provided within the intake silencer body. The silencing structure includes a silencing pipe, a spiral airflow guide plate, a connecting pipe, a silencing canister, a first conical airflow guide pipe, a first sound-absorbing cotton, a first barrier plate, a first circular hole, a second conical airflow guide pipe, a second sound-absorbing cotton, and a second barrier plate. The second circular hole is located inside the muffler body. The muffler tube is fixedly connected to the other end of the air intake pipe. A spiral airflow guide plate is fixedly installed inside the muffler tube. A connecting pipe is fixedly connected to the other end of the muffler tube. A muffler can is fixedly installed at the upper end of the connecting pipe. A first baffle plate is fixedly installed inside the muffler can near the lower end. A first circular hole is opened in the ring near the outer periphery of the first baffle plate. A second baffle plate is fixedly installed inside the muffler can near the upper end. A second circular hole is opened in the ring near the middle of the second baffle plate.

[0006] Preferably, a first conical airflow guide pipe is fixedly installed on the bottom surface inside the silencer tank, and a second conical airflow guide pipe is fixedly installed on the middle of the upper surface of the first barrier plate.

[0007] Preferably, a first sound-absorbing cotton is fixedly installed on the lower surface of the first barrier plate, and a second sound-absorbing cotton is fixedly installed on the lower surface of the second barrier plate.

[0008] Preferably, the upper end of the silencer is fixedly connected to the air outlet pipe.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] In this invention, the silencing structure allows the compressor airflow to enter the silencing pipe and lose some energy. Then, it enters the silencing tank through the connecting pipe, gradually consuming the compressor airflow and thus silencing the airflow. Finally, the airflow is discharged through the outlet pipe at the top of the silencing tank. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an intake silencer with a built-in airflow guide plate according to this utility model.

[0012] Figure 2 This is a cross-sectional view of an intake muffler with a built-in airflow guide plate according to the present invention;

[0013] Figure 3 This utility model relates to an intake muffler with a built-in airflow guide plate. Figure 2 Enlarged view of point A in the middle.

[0014] In the diagram: 1. Intake silencer body; 2. Inlet pipe; 3. Outlet pipe; 4. Silencing structure; 401. Silencing pipe; 402. Spiral airflow guide plate; 403. Connecting pipe; 404. Silencing tank; 405. No. 1 conical airflow guide pipe; 406. No. 1 sound-absorbing cotton; 407. No. 1 barrier plate; 408. No. 1 round hole; 409. No. 2 conical airflow guide pipe; 410. No. 2 sound-absorbing cotton; 411. No. 2 barrier plate; 412. No. 2 round hole. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figure 1-3 As shown, an intake muffler with a built-in airflow guide plate includes an intake muffler body 1. An air inlet pipe 2 is fixedly connected to one end surface of the intake muffler body 1 near the lower end, and an air outlet pipe 3 is fixedly connected to the upper surface of the intake muffler body 1. An intake muffler body 1 has an internal silencing structure 4, which includes a silencing pipe 401, a spiral airflow guide plate 402, a connecting pipe 403, a silencing canister 404, a first conical airflow guide pipe 405, a first sound-absorbing cotton 406, a first barrier plate 407, a first circular hole 408, a second conical airflow guide pipe 409, a second sound-absorbing cotton 410, and a second barrier plate 411. The second round hole 412 and the silencer pipe 401 are fixedly connected to the other end of the air intake pipe 2 inside the intake silencer body 1. The silencer pipe 401 is fixedly installed with a spiral airflow guide plate 402. The other end of the silencer pipe 401 is fixedly connected with a connecting pipe 403. The upper end of the connecting pipe 403 is fixedly installed with a silencer canister 404. The first baffle plate 407 is fixedly installed near the lower end inside the silencer canister 404. The first baffle plate 407 has a first round hole 408 in a ring near the outer periphery. The second baffle plate 411 is fixedly installed near the upper end inside the silencer canister 404. The second baffle plate 411 has a second round hole 412 in a ring near the middle.

[0017] A first conical airflow guide pipe 405 is fixedly installed on the bottom surface of the silencer 404. A second conical airflow guide pipe 409 is fixedly installed in the middle of the upper surface of the first baffle plate 407. A first sound-absorbing cotton 406 is fixedly installed on the lower surface of the first baffle plate 407, and a second sound-absorbing cotton 410 is fixedly installed on the lower surface of the second baffle plate 411. The upper end of the silencer 404 is fixedly connected to the exhaust pipe 3, which allows the compressor airflow to enter the silencer pipe 401 and lose some energy. Then, it enters the silencer 404 through the connecting pipe 403, gradually consuming the compressor airflow, thereby achieving noise reduction of the airflow. Finally, it is discharged through the exhaust pipe 3 at the upper end of the silencer 404.

[0018] It should be noted that this utility model is an intake silencer with a built-in airflow guide plate. In use, the compressed airflow from the compressor enters the silencer pipe 401 inside the intake silencer body 1 through the intake pipe 2. After passing through the spiral airflow guide plate 402, the compressor airflow loses some energy. Then, it enters the silencer tank 404 through the connecting pipe 403 and is ejected from the first conical airflow guide pipe 405. The first sound-absorbing cotton 406 at the lower end of the first baffle plate 407 further dissipates the energy of the airflow. Subsequently, the airflow passes through the first round hole 408 and the second conical airflow guide... The airflow is guided to the outside of the pipe 409. The second sound-absorbing cotton 410, which is fixedly installed on the lower surface of the second baffle plate 411, further dissipates the energy of the airflow. Then, it is discharged from the silencer 404 through the second round hole 412. The airflow bends between the first conical airflow guide pipe 405 and the first round hole 408, and also bends at the outside of the second conical airflow guide pipe 409 and the second round hole 412. The energy loss at the bend is significant, which gradually consumes the compressor airflow, thereby achieving the silencing of the airflow. Finally, it is discharged through the upper end of the silencer 404 into the outlet pipe 3.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An air intake muffler with built-in airflow deflectors, characterized by: The utility model relates to an air intake silencer, including air intake silencer body (1), one end surface of air intake silencer body (1) is close to lower end fixed connection has air inlet pipe (2), air intake silencer body (1) upper surface fixed connection has air outlet pipe (3), the inside of air intake silencer body (1) is provided with silencing structure (4), and silencing structure (4) includes silencing pipe (401), spiral airflow guide plate (402), connecting pipe (403), silencer (404), no.

2. The air intake silencer with built-in airflow guide panel according to claim 1, characterized in that: The utility model relates to an air intake silencer, including air intake silencer body (1), one end surface of air intake silencer body (1) is close to lower end fixed connection has air inlet pipe (2), air intake silencer body (1) upper surface fixed connection has air outlet pipe (3), the inside of air intake silencer body (1) is provided with silencing structure (4), and silencing structure (4) includes silencing pipe (401), spiral airflow guide plate (402), connecting pipe (403), silencer (404), no.

3. The air intake silencer with built-in airflow guide panel according to claim 2, characterized in that: The utility model relates to an air intake silencer, including air intake silencer body (1), one end surface of air intake silencer body (1) is close to lower end fixed connection has air inlet pipe (2), air intake silencer body (1) upper surface fixed connection has air outlet pipe (3), the inside of air intake silencer body (1) is provided with silencing structure (4), and silencing structure (4) includes silencing pipe (401), spiral airflow guide plate (402), connecting pipe (403), silencer (404), no.

4. The air intake silencer with built-in airflow guide panel according to claim 3, characterized in that: The utility model relates to an air intake silencer, including air intake silencer body (1), one end surface of air intake silencer body (1) is close to lower end fixed connection has air inlet pipe (2), air intake silencer body (1) upper surface fixed connection has air outlet pipe (3), the inside of air intake silencer body (1) is provided with silencing structure (4), and silencing structure (4) includes silencing pipe (401), spiral airflow guide plate (402), connecting pipe (403), silencer (404), no. The utility model relates to an air intake silencer, including air intake silencer body (1), one end surface of air intake silencer body (1) is close to lower end fixed connection has air inlet pipe (2), air intake silencer body (1) upper surface fixed connection has air outlet pipe (3), the inside of air intake silencer body (1) is provided with silencing structure (4), and silencing structure (4) includes silencing pipe (401), spiral airflow guide plate (402), connecting pipe (403), silencer (404), no.

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