Diversion type low-frequency shunting tee joint

Abstract

The utility model relates to the technical field of air conditioner ventilation systems, in particular to a flow guide type low-frequency flow dividing tee joint which comprises a box body and a silencing body arranged in the box body, one end of the silencing body extends inwards to be provided with an air inlet channel, and the two sides of the silencing body extend inwards to be provided with air outlet channels respectively. The air outlet channels are communicated with the air inlet channel in the silencing body, an air inlet is formed in the box body and right opposite to the air inlet channel, an air outlet is formed in the box body and right opposite to the air outlet channels, and a resistant silencing cavity is formed between the air inlet channel and the two air outlet channels; in practical application, airflow enters the air inlet channel from the air inlet, is exhausted from the two air outlets after being silenced by the resistant silencing cavity, and absorbs noise generated by the airflow through the silencing body and the resistant silencing cavity, so that the noise reduction effect is good; pressure loss and wind noise can be effectively reduced, and the wind noise is prevented from entering a downstream area along with the air pipe.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning and ventilation system technology, specifically a flow-guiding low-frequency diversion tee. Background Technology

[0002] Air conditioning ventilation ducts are common components in air conditioning ventilation systems. Most existing duct tees are made of metal and do not have a sound-absorbing effect. When airflow passes through the tee, pressure loss and wind noise will be generated. The wind noise will enter the downstream area with the duct, which will inevitably have a certain impact on people's work or life. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a low-frequency diversion tee that can effectively reduce pressure loss and wind noise, and prevent wind noise from entering the downstream area through the duct.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A flow-guiding low-frequency splitter includes a housing and a silencer disposed within the housing. One end of the silencer extends inward and has an air inlet channel. Both sides of the silencer extend inward and have air outlet channels. The air outlet channels are connected to the air inlet channel inside the silencer. An air inlet is disposed on the housing facing the air inlet channel, and an air outlet is disposed on the housing facing the air outlet channel. An anti-noise silencing cavity is formed between the air inlet channel and the two air outlet channels.

[0006] The sound-absorbing body is made of sound-absorbing cotton;

[0007] The inner wall of the air outlet channel is provided with an arc-shaped concave surface and a refractive straight surface, the arc-shaped concave surface is positioned opposite the refractive straight surface, and one end of the refractive straight surface is connected to the air inlet channel;

[0008] The concave part of the arc-shaped concave surface is provided with multiple grooves, and the multiple grooves divide the arc-shaped concave surface into multiple partition pieces;

[0009] One end of the arc-shaped concave surface is positioned directly opposite the air inlet channel.

[0010] Furthermore, a straight guide surface is provided at the other end of the arc-shaped concave surface, and the refractive straight surface extends to the opposite side of the straight guide surface.

[0011] Furthermore, a support frame is provided inside the sound-absorbing cotton, and the support frame is fixed inside the box. Multiple sets of support frames are provided on one side of the partition plate, and one end of the support frame is fixed to the support frame.

[0012] The beneficial effects of this utility model are:

[0013] In practical applications, airflow enters the air intake channel from the air inlet, is silenced by the resistive silencing cavity, and is discharged from the two air outlets. The noise generated by the airflow is absorbed by the silencing body and the resistive silencing cavity, resulting in good noise reduction. This utility model can effectively reduce pressure loss and wind noise, and prevent wind noise from entering the downstream area with the air duct. Attached Figure Description

[0014] Figure 1 This is the left view of this utility model;

[0015] Figure 2 yes Figure 1 Cross-sectional view at point AA;

[0016] Reference numerals: 1. Box body; 11. Air inlet; 12. Air outlet; 2. Silencing body; 21. Groove; 22. Separator; 3. Air inlet channel; 4. Air outlet channel; 41. Arc-shaped cavity; 42. Reflective surface; 43. Guide surface; 5. Support frame; 51. Support rod. Detailed Implementation

[0017] like Figure 1 and Figure 2 As shown, a flow-guiding low-frequency splitter includes a housing 1 and a silencer 2 disposed inside the housing 1. One end of the silencer 2 extends inward and is provided with an air inlet channel 3. Air outlet channels 4 extend inward on both sides of the silencer 2 respectively. The air outlet channels 4 are connected to the air inlet channel 3 inside the silencer 2. An air inlet 11 is provided on the housing 1 facing the air inlet channel 3, and an air outlet 12 is provided on the housing 1 facing the air outlet channels 4. An anti-noise silencing cavity is formed between the air inlet channel 3 and the two air outlet channels 4.

[0018] In use, the airflow enters the air inlet channel 3 from the air inlet 11, and after being silenced by the resistive silencing cavity, it is discharged from the two air outlets 12. The noise generated by the airflow is absorbed by the silencer 2 and the resistive silencing cavity, resulting in good noise reduction. This utility model can effectively reduce pressure loss and wind noise, and prevent wind noise from entering the downstream area with the air duct.

[0019] like Figure 1 and Figure 2 As shown, the sound-absorbing body 2 is made of sound-absorbing cotton; in this embodiment, the sound-absorbing body 2 made of sound-absorbing cotton can effectively absorb the airflow noise refracted in the resistant sound-absorbing cavity.

[0020] like Figure 1 and Figure 2As shown, the inner wall of the air outlet channel 4 is provided with an arc-shaped cavity 41 and a refractive surface 42. The arc-shaped cavity 41 is positioned directly opposite the refractive surface 42, and one end of the refractive surface 42 is connected to the air inlet channel 3. In this embodiment, as the airflow passes through the air outlet channel 4, the arc-shaped cavity 41 increases the cross-sectional area of ​​the air outlet channel 4. The sound wave is reflected from the arc-shaped cavity 41 to the refractive surface 42 of the air inlet channel 3, forming a phase difference with the original sound wave, thereby canceling each other out and further improving the sound absorption effect of the silencer 2.

[0021] like Figure 1 and Figure 2 As shown, the inner recess of the arc-shaped cavity 41 is provided with multiple grooves 21, which divide the arc-shaped cavity 41 into multiple partition plates 22. In this embodiment, during the process of sound waves being reflected from the arc-shaped cavity 41 to the refractive surface 42, the multiple partition plates 22 allow some low-frequency sound waves to enter the grooves 21, further improving the sound absorption effect of the resistive silencing cavity on low-frequency noise.

[0022] like Figure 1 and Figure 2 As shown, one end of the arc-shaped cavity 41 is positioned directly opposite the air inlet channel 3. In this embodiment, when one end of the arc-shaped cavity 41 is positioned directly opposite the air inlet channel 3, the sound waves entering the arc-shaped cavity 41 are more easily reflected from the arc-shaped cavity 41 onto the refractive surface 42 of the air inlet channel 3, resulting in a better noise reduction effect.

[0023] like Figure 1 and Figure 2 As shown, the other end of the arc-shaped cavity 41 is provided with a guide surface 43, and the refractive surface 42 extends to the opposite side of the guide surface 43; in this embodiment, when the refractive surface 42 extends to the opposite side of the guide surface 43, the guide surface 43 can guide the airflow.

[0024] like Figure 1 and Figure 2 As shown, a support frame 5 is provided inside the sound-absorbing cotton, and the support frame 5 is fixed inside the housing 1. Multiple sets of support frames 51 are provided on one side of the partition plate 22, and one end of the support frame 51 is fixed to the support frame 5. In this embodiment, during long-term use, the sound-absorbing cotton is easily collapsed under the impact of airflow. The support frame provides support for the sound-absorbing cotton to prevent it from collapsing during long-term use. The support frame 51 supports the partition plate 22.

[0025] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. A flow-directed low frequency flow-splitting tee, characterized by: The utility model provides an anti-resistance sound-absorbing cavity is formed between the air inlet channel and two air outlet channels, and the sound-absorbing cavity is formed by the sound-absorbing cotton. The sound-absorbing body is made of sound-absorbing cotton. The inner side wall of the air outlet channel is provided with a circular arc concave surface and a refractive straight surface, the circular arc concave surface is opposite to the refractive straight surface, and one end of the refractive straight surface is communicated with the air inlet channel. A plurality of grooves are arranged in the inner recess of the circular arc concave surface, and the circular arc concave surface is divided into a plurality of separation pieces by the grooves. One end of the circular arc concave surface is opposite to the air inlet channel.

2. The flow-guided low-frequency flow-split tee according to claim 1, characterized in that The other end of the circular arc concave surface is provided with a straight guide surface, and the refractive straight surface extends to the opposite side of the straight guide surface.

3. The flow-directed low-frequency flow-splitting tee of claim 1, wherein, A support frame is arranged in the sound-absorbing cotton, the support frame is fixed in the box, one side of the separation piece is provided with a plurality of support frames, and one end of the support frame is fixed on the support frame.

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