A self-adaptive intake muffler
A technology of intake muffler and muffler, which is used in intake muffler, machine/engine, combustion air/combustion-air treatment, etc., can solve the problems of single effective frequency range and inability to adapt to different medium noise frequencies.
Inactive Publication Date: 2020-02-28
CHONGQING IND POLYTECHNIC COLLEGE
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The disadvantage of the traditional resonant cavity muffler is that it can only have a good noise reduction effect on the noise whose frequency is near the natural frequency, and once the size parameters of the resonant cavity are determined, the natural frequency of the resonant cavity muffler is also determined and cannot be changed again, so Its effective frequency range is relatively single, and it cannot adapt to the actual situation that the medium has different noise frequencies at different flow velocities
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The following combination image 3 , the preferred embodiments of the present invention are described in detail; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.
[0020] The basic structure of the preferred embodiment of the present invention and figure 2 The structure in the center is consistent, mainly composed of the muffler shell, two resonant chambers, the bottom plate of the resonant chamber, the partition plate of the resonant chamber, the side branch pipeline, the main pipeline, the track and the roller, the hinge shaft, the return spring and other components. The muffler shell It can move up and down relative to the bottom plate of the resonance cavity through the track, and the partition can rotate around the hinge axis through the track.
[0021] With the acceleration of the medium flow rate, the negative pressure at the intersection o...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a self-adaption intake muffler with a self-adaption function, and relates to the muffler used for inhibiting noises of an air intake pipeline. The muffler is composed of left and right adjacent resonant cavities, the interior space of a shell body of the muffler is partitioned into the two resonant cavities through a partition plate between the resonant cavities, and the two resonant cavities are separately connected with a main pipeline through respective pipelines; a rail groove is formed in the inner side of the shell body of the muffler, the shell body of the muffler and the partition plate between the resonant cavities can move relative to the main pipeline, and the motion ranges of the shell body of the muffler and the partition plate can be controlled by springs. According to different pressures generated from different flowing speeds of a medium on an air intake main pipeline, the shell body of the muffler and the partition plate between the resonant cavities move along the formed rail groove, structure parameters of the two resonant cavities can be adjusted in a self-adaption mode to eliminate air intake noises of a corresponding frequency at different flowing speeds, and an excellent noise inhibiting effect of the muffler can be achieved under the more comprehensive working condition.
Description
technical field [0001] The invention relates to the field of pipeline noise, in particular to a muffler for suppressing the noise of an intake pipeline. Background technique [0002] The resonance cavity is a traditional pipe noise suppression device, and its basic structure is as follows: figure 1 shown. The main pipeline 6 is connected with the resonant cavity 2 through the bypass pipeline 5 . The air column in the side branch pipe 5 has a certain sound quality similar to a piston, and the air in the resonance chamber 2 has a certain stiffness like a spring, and the two form a resonance system. When the sound wave is transmitted along the main pipeline 6 to the intersection with the side branch pipeline 5, the air column vibrates under the action of the sound wave, and resonance occurs when the frequency of the sound wave is close to the natural frequency of the system, and the frictional damping during resonance converts a large amount of sound energy Dissipated for he...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F02M35/12
CPCF02M35/1266
Inventor 张杨
Owner CHONGQING IND POLYTECHNIC COLLEGE