Suction Muffler Dual Equalization Chambers Refrigerant Compressor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing suction silencers for refrigerant compressors face challenges in maintaining continuous pressure equalization between the damping chamber and the environment, especially during startup, due to potential blockage of the equalization chamber opening, leading to performance losses and risk of damage from pressure fluctuations.
Innovation Solution
The design incorporates two separate equalization chambers with independent openings, where the second opening is positioned above the first, ensuring pressure equalization is maintained even if the first opening is blocked, and a flexible connecting element is used to direct refrigerant flow directly into the suction silencer without mixing with heated refrigerant inside the compressor housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single equalization chamber with one opening is used, then the structure is simple, but the pressure equalization may be blocked during startup
Solution Approach 1:
The equalization chamber is divided into multiple segments (first equalization chamber and second equalization chamber), each with its own opening. This segmentation ensures that if one opening becomes blocked during startup, the other opening can still maintain pressure equalization, thereby improving reliability without significantly increasing overall structural complexity.
2Temperature
If the refrigerant supply line connects directly to the compressor housing, then the refrigerant can flow freely, but the cold refrigerant mixes with heated refrigerant in the housing
Solution Approach 1:
The refrigerant supply line is extracted from direct connection to the compressor housing and instead connected to the suction silencer inlet. This extraction prevents cold refrigerant from mixing with heated refrigerant in the compressor housing, maintaining lower refrigerant temperature throughout the system.
Solution Approach 2:
The suction silencer acts as an intermediary component between the refrigerant supply line and the piston-cylinder unit. By routing refrigerant through the suction silencer first, the system prevents direct mixing of cold and heated refrigerant in the compressor housing, thereby maintaining temperature efficiency.
3Ease of manufacture
If the first opening of the equalization chamber is positioned low, then it is close to the oil sump for drainage, but it may be blocked by oil during startup
Solution Approach 1:
The equalization chamber is segmented into a first equalization chamber with a lower opening for oil drainage and a second equalization chamber with a higher opening for pressure equalization. This segmentation allows the lower opening to be positioned close to the oil sump for effective drainage while the higher opening remains above the oil level to prevent blocking, ensuring continuous pressure equalization.
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
This configuration ensures continuous pressure equalization and prevents damage to the flexible connecting element, maintaining the efficiency and noise reduction of the refrigerant compressor while preventing overheating and pressure-related issues.
Implementation Method 1
an equalization chamber (11, 14) connected to the damping chamber (7) and communicating with the environment for equalizing the pressure of the damping chamber (7) with the environment
Implementation Method 2
a damping chamber (7) connecting the inlet (5) and outlet (6) for damping sound waves, which can be divided into several interconnected damping volumes
Data Source
AI summary
The invention concerns a suction silencer (1) for an encapsulated refrigerant compressor, withan inlet (5),an outlet (6),a damping chamber (7) connecting the inlet (5) and the outlet (6) for sound attenuation, andan equalization chamber connected to the damping chamber (7) for equalizing the pressure of the damping chamber (7),wherein the suction silencer (1) is provided in the operating position for integration in a compressor housing (20) of the refrigerant compressor having a bottom area (21) for reception of an oil sump (26).To ensure a continuous pressure equalization between the damping chamber (7) and the environment even during start-up of the refrigerant compressor, it is intended in accordance with the invention that the equalization chamber is designed as a first equalization chamber (11) with a first opening (9) for pressure equalization and the suction silencer (1) has a further, second equalization chamber (14) with a second opening (10) for pressure equalization.