Refrigeration Muffler Drainage While Preserving Sound Attenuation
Solution Overview
Problem
In refrigerating systems, particularly screw units for industrial refrigeration, the high circulation volume of lubricating liquid can lead to accumulation in the muffler, reducing its muffling effect due to insufficient discharge.
Innovation Solution
A muffler design with partition plates, muffling pipes, and liquid discharging pipes that allow for timely drainage of lubricating liquid while maintaining sound attenuation, featuring aligned outlets and channels to manage liquid flow without compromising muffling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the muffler is used in refrigerating systems with high lubricating liquid circulation volume, then the lubricating liquid can be discharged through the liquid discharging pipe, but the muffling effect may be reduced due to liquid accumulation in the muffler cavity
Solution Approach 1:
The patent extracts the lubricating liquid from the muffler cavity through dedicated liquid discharging pipes that penetrate through partition plates. The liquid discharging channels are specifically designed to remove the harmful liquid accumulation that would otherwise degrade the muffling performance, separating the liquid removal function from the sound attenuation function.
Solution Approach 2:
The muffler cavity is segmented into multiple compartments by partition plates, each with its own liquid discharging pipe. This segmentation allows for distributed liquid removal throughout the muffler volume, preventing localized accumulation while maintaining the overall muffling structure. The partition plates create multiple zones that can be independently managed for liquid discharge.
2Productivity
If liquid discharging pipes are added to the muffler, then lubricating liquid can be drained in real-time, but the device complexity increases
Solution Approach 1:
The partition plates serve multiple functions: they segment the muffler cavity for sound attenuation purposes and simultaneously act as mounting structures for liquid discharging pipes. The partition plates themselves become part of the liquid discharge system, reducing the need for separate structural components and integrating two functions into one element.
Solution Approach 2:
The liquid discharging pipes are integrated with the partition plates, combining the sound attenuation structure with the liquid removal function. The pipes penetrate through the partition plates, merging the structural division elements with the fluid discharge elements into a unified design that reduces overall component count.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The muffler effectively drains lubricating liquid in real-time, preserving the muffling effect and preventing refrigerant leakage, suitable for both horizontal and oblique orientations.
Implementation Method 1
a muffler, comprising a housing (101) defining an anechoic chamber (102), an anechoic chamber inlet (103) and an anechoic chamber outlet (104) that are located at two opposite axial ends of the housing (101)
Implementation Method 2
Each liquid discharging pipe is arranged in close contact with the housing or is partially formed by the housing. The position of the anechoic chamber outlet relative to the at least one liquid discharging pipe is configured so that a liquid flowing out from the at least one liquid discharging pipe can be discharged through the anechoic chamber outlet
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 2C
AI summary
The present application provides a muffler, comprising a cylindrical housing defining an anechoic chamber, an anechoic chamber inlet and an anechoic chamber outlet that are located at two opposite axial ends of the housing, and at least one partition plate, at least one muffling pipe, and at least one liquid discharging pipe that are located in the anechoic chamber. The at least one liquid discharging pipe is provided on the at least one partition plate and extends a certain distance along the axis of the housing on at least one side of the corresponding partition plate. Each liquid discharging pipe defines a liquid discharging channel penetrating through the corresponding partition plate. Each liquid discharging pipe is arranged in close contact with the housing or is partially formed by the housing. The position of the anechoic chamber outlet relative to the at least one liquid discharging pipe is configured so that a liquid flowing out from the at least one liquid discharging pipe can be discharged through the anechoic chamber outlet. The muffler of the present application is part of an exhaust channel of a compressor, and the liquid discharging channel provided in the anechoic chamber can meet the requirement of timely discharging a lubricating liquid from the muffler, and likewise cannot reduce the muffling effect of the anechoic chamber.