Reciprocating Compressor Discharge Guide Reduces Pressure Pulsation
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Solution Overview
Problem
Reciprocating compressors generate discharge pressure pulsations that cause noise in refrigerant pipes, degrading the reliability of home appliances due to increased vibration and noise levels.
Innovation Solution
The implementation of a discharge guide device within a discharge muffler, featuring a discharge fluid passage, multiple discharge rooms, and a fixing bracket to reinforce the muffler's stiffness, which reduces pressure pulsation by guiding the refrigerant through a bending pipe shape and ensuring firm fixation, thereby minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional discharge muffler structure is used, then the structure is simple, but discharge pressure pulsations cause refrigerant pipes to vibrate and increase noise
Solution Approach 1:
The discharge muffler is divided into multiple discharge rooms (first discharge room, second discharge room, third discharge room) separated by partition walls. This segmentation allows the refrigerant discharge process to be divided into multiple stages, reducing pressure pulsations and preventing pipe vibration while maintaining a manageable structural complexity
Solution Approach 2:
The discharge guide device is nested inside the discharge muffler body, with the guide pipe positioned within the discharge rooms. This nested configuration allows the guide device to effectively reduce pressure pulsations without significantly increasing the overall structural complexity of the muffler assembly
2Stability of the object's composition
If the discharge muffler stiffness is increased to reduce vibration, then vibration resistance improves, but the structure becomes more complex
Solution Approach 1:
The discharge guide pipe is designed with a bending shape rather than a straight configuration. This curved geometry provides structural reinforcement to the discharge muffler, increasing its stiffness and vibration resistance while integrating smoothly into the existing muffler structure without adding significant complexity
3Object-affected harmful factors
If a discharge guide device is added to reduce pressure pulsation, then noise reduction improves, but the device complexity increases
Solution Approach 1:
The discharge guide pipe acts as an intermediary device between the discharge space and the discharge outlet. It mediates the refrigerant flow by guiding it through a bending path, which reduces pressure pulsations and noise while maintaining a relatively simple cylindrical pipe structure that does not significantly increase overall device complexity
Solution Approach 2:
The guide pipe is designed with a bending shape rather than a straight configuration. This curved geometry provides structural reinforcement to the discharge muffler, increasing its stiffness and vibration resistance while integrating smoothly into the existing muffler structure without adding significant complexity
Data Source
AI summary
A reciprocating compressor includes a cylinder that defines a compressing space and a discharge muffler configured to receive refrigerant compressed in the cylinder and to discharge the refrigerant. The discharge muffler includes a discharge muffler body and a discharge guide supported by the discharge muffler body. The discharge muffler body defines a discharge space configured to receive the refrigerant from the cylinder and includes a wall protruding from an inner circumferential surface of the discharge muffler body. The discharge guide is coupled to the wall and includes a pipe that defines a pipe inflow hole configured to receive the refrigerant from the discharge space and a pipe outflow hole configured to discharge the refrigerant. The discharge guide further includes a fixing bracket that couples the pipe to the discharge muffler body.