Inserted Discharge Pipe Layout for Quiet Hermetic Vessels
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Solution Overview
Problem
Conventional hermetic vessels with inserted-type discharge pipes in air conditioning systems generate noise due to the vortex created near the discharge pipe inlet, which affects the standing wave and results in audible noise during refrigerant discharge.
Innovation Solution
The hermetic vessel incorporates a first discharge pipe with a higher frequency wave and a second discharge pipe connected in a T-shaped configuration, where the first discharge pipe has opened ends and a diameter-to-length ratio of 1:2 to 1:4, stabilizing fluid flow and minimizing noise by directing fluid flow in different directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional discharge pipe is used to discharge refrigerant from the oil separator, then the refrigerant can be discharged efficiently, but noise is generated due to vortex formation near the discharge pipe inlet
Solution Approach 1:
The discharge pipe is divided into a first discharge pipe and a second discharge pipe. The first discharge pipe directs refrigerant flow in a first direction, while the second discharge pipe directs flow in a second direction different from the first direction. This segmentation of the discharge path prevents vortex formation and reduces noise while maintaining discharge efficiency.
Solution Approach 2:
The discharge system transitions from a single-direction discharge to multi-directional discharge by introducing the second discharge pipe connected to the first discharge pipe. This dimensional change in flow direction allows the refrigerant to be discharged in multiple directions, eliminating the vortex that causes noise.
2Object-generated harmful factors
If the discharge pipe is designed to reduce noise, then noise levels decrease, but the discharge efficiency may be compromised
Solution Approach 1:
The discharge pipe is segmented into two sections with different flow directions. The first discharge pipe handles the primary discharge flow, while the second discharge pipe provides an additional discharge path in a different direction. This segmentation maintains discharge efficiency by providing multiple pathways while reducing noise through vortex elimination.
Solution Approach 2:
The system changes the flow direction parameter by introducing a second discharge pipe with a different flow direction angle. This parameter change optimizes both noise reduction and discharge efficiency by allowing the refrigerant to exit in multiple directions rather than being constrained to a single path.
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 reduces audible noise by creating a higher frequency wave in the first discharge pipe and stabilizing fluid flow, minimizing noise generation in both the first and second discharge pipes, enhancing the noise reduction in air conditioning systems.
Implementation Method 1
a first discharge pipe which guides flow of the fluid in a first direction and causes a wave of a higher frequency than an audible frequency
Implementation Method 2
oil contained in the refrigerant collides with the inner peripheral surface of the vessel body 1 by a centrifugal force, and is separated from the refrigerant
Implementation Method 3
a powerful vortex is generated near an inlet of the discharge pipe 3 when the refrigerant swirling in the vessel body 1 is discharged through the discharge pipe 3
Data Source
AI summary
A hermetic vessel capable of preventing noise caused by fluid flow, and an oil separator, a gas-liquid separator, and an air conditioning system using the same. The hermetic vessel having a vessel body includes an inlet through which a fluid flows into the vessel body, and a discharge pipe which is inserted into the vessel body to discharge the fluid. The discharge pipe includes a first discharge pipe which guides a flow of the fluid in a first direction and causes a wave of a higher frequency than an audible frequency, and a second discharge pipe which is connected to the first discharge pipe to guide a flow of the fluid from the first discharge pipe in a second direction which is different from the first direction.