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Pipeline silencing device and application

A technology of muffler device and pipeline, which is applied in application, components of pumping device for elastic fluid, sound-producing equipment, etc., can solve the problem of large size of muffler and cannot be installed in the machine, etc., and achieve good low-frequency muffling characteristics. Effect

Pending Publication Date: 2022-07-12
INST OF INTELLIGENT MFG GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pipeline muffler and its application to solve the problem that the muffler is too large to be installed in the machine when the low frequency muffler is used

Method used

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  • Pipeline silencing device and application
  • Pipeline silencing device and application
  • Pipeline silencing device and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] see figure 1 , this embodiment provides a pipeline muffler device, which includes an expansion muffler 1 and a Helmholtz resonance muffler 2. The Helmholtz resonance muffler 2 has a closed cavity 21 and a connecting pipe 22. The cavity 21 It communicates with the expansion muffler 1 through the connecting pipe 22 . The expansion muffler 1 has an expansion tube 11 and an inner tube 12 , the inner tube 12 is partially located in the expansion tube 11 , and the wall of the inner tube 12 is fixed with the end of the corresponding expansion tube 11 . The expansion tube 11 includes a contraction section 111 and an expansion section 112 . Part of the connecting pipe 22 is located in the cavity 21 of the Helmholtz resonance muffler 2 . The connecting pipe 22 communicates with the constricted section 111 of the expansion pipe 11 . The connecting pipe 22 in this embodiment is a straight connecting pipe 22 .

[0064] The inner diameter of the straight connecting pipe 22 is 5mm...

Embodiment 2

[0068] see figure 2 , this embodiment provides a pipeline muffler device, which includes an expansion muffler 1 and a Helmholtz resonance muffler 2. The Helmholtz resonance muffler 2 has a closed cavity 21 and a connecting pipe 22. The cavity 21 It communicates with the expansion muffler 1 through the connecting pipe 22 . The expansion muffler 1 has an expansion tube 11 and an inner tube 12 , the inner tube 12 is partially located in the expansion tube 11 , and the wall of the inner tube 12 is fixed with the end of the corresponding expansion tube 11 . The expansion tube 11 includes a contraction section 111 and an expansion section 112 . The connecting pipe 22 communicates with the enlarged section 112 of the expansion pipe 11 . The connecting pipe 22 in this embodiment is a straight connecting pipe 22 .

[0069] The inner diameter of the straight connecting pipe 22 is 3.5 mm and the length is 50 mm. The cavity 21 has a diameter of 25mm and a height of 26.8mm, and the tr...

Embodiment 3

[0076] Compared with the second embodiment, the only difference between the present embodiment and the second embodiment is that the connecting pipe 22 is partially located in the cavity 21 of the Helmholtz resonance muffler 2 . Insert the connecting pipe 22 into the cavity 21 by 5mm, 15mm, 25mm, 35mm or 45mm, respectively, and prepare the corresponding muffler. Refer to the structure of the muffler after the connecting pipe 22 is inserted into the cavity 21 for 35mm Figure 14 shown.

[0077] The inner diameter of the straight connecting pipe 22 is 5mm, the length is 50mm, the diameter of the cavity 21 is 25mm and the height is 54.7mm, the length of the expansion pipe 11 is 100mm, the diameter of the expansion section 112 is 25mm, and the diameter of the contraction section is 10mm. Transmission loss measurements at different frequencies were made for this muffler.

[0078] result reference Figure 15 shown, by Figure 15 It can be seen that the insertion depth of the con...

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PUM

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Abstract

The invention provides a pipeline silencing device and application, and relates to the technical field of air conditioners. The silencer comprises an expansion type silencer and a Helmholtz resonance silencer, the Helmholtz resonance silencer is provided with a closed cavity and a connecting pipe, and the cavity is communicated with the expansion type silencer through the connecting pipe. The expansion type silencer and the Helmholtz resonance silencer are combined, and the good low-frequency silencing characteristic can be obtained within the length size limiting range of a traditional expansion type silencer and the size range of an existing machine or device. According to the composite silencing structure, the mode that the expansion cavity silencer and the helmholtz resonance silencer are combined is adopted, the advantages of the two silencers are integrated, low-frequency precise silencing can be achieved, and the broadband silencing characteristic is achieved.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and in particular, to a pipeline noise reduction device and its application. Background technique [0002] At present, the muffler commonly used in home air conditioning systems is a traditional expansion muffler. To eliminate the transmitted sound of lower frequencies, a correspondingly longer muffler needs to be designed. Under actual working conditions, the operating frequency of the compressor is usually 30-100Hz, and the double frequency and triple frequency of the compressor are usually below 300Hz. If a traditional expansion muffler is used, it is necessary to design a muffler far exceeding the size of the machine, causing the problem that the muffler cannot be installed in the existing machine. [0003] In view of this, the present invention is proposed. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a pipeline muffler device and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16G10K11/172F04B39/00F04B53/00F04D29/66F24F1/12F24F13/24
CPCG10K11/161G10K11/172F04B39/0061F04B39/0066F04B53/001F04D29/665F04D29/663F24F1/12F24F13/24F24F2013/247
Inventor 张良刘辉唐健豪龙旦风司卫征
Owner INST OF INTELLIGENT MFG GUANGDONG ACAD OF SCI