Inclined Nozzle Refrigerant Compressor Suction Path
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional refrigerant compressors face performance limitations due to the deflection in the suction duct, leading to back pressure, unstable flow, and poor noise damping, particularly in compact designs where mufflers are smaller and less effective.
Innovation Solution
A hermetically encapsulated refrigerant compressor design with a nozzle inclined at a maximum angle of -45° to +45° relative to the reciprocating piston axis, eliminating right-angled deflections and allowing a shorter suction path, which reduces turbulence and flow losses, and enables a larger muffler cavity for improved noise damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the silencer is positioned below the cylinder head with a duct section perpendicular to the piston axis, then the silencer can be connected to the valve plate inlet opening, but the channel deflection causes refrigerant to be forced to the outer edge by centrifugal force, resulting in reduced flow through the inlet and potential backflow
Solution Approach 1:
The patent inverts the conventional approach by positioning the silencer at the same level as the cylinder head cover rather than below it, and by inclining the nozzle at a maximum angle of 45 degrees relative to the piston axis rather than using right-angled deflections. This inversion eliminates the centrifugal force problem and restores proper refrigerant flow to the suction valve inlet.
Solution Approach 2:
The patent changes the geometric parameters of the refrigerant path by limiting the nozzle inclination angle to a maximum of 45 degrees relative to the piston axis and eliminating right-angled deflections. This parameter change reduces flow losses and prevents refrigerant backflow while maintaining compact dimensions.
2Adaptability or versatility
If the channel is made long and deflected to connect the silencer to the valve plate inlet opening, then the silencer can be positioned at a distance and angle relative to the inlet opening, but the deflection disrupts laminar flow and creates turbulence, leading to flow losses
Solution Approach 1:
The patent changes the geometric parameters by limiting the nozzle inclination angle to a maximum of 45 degrees and eliminating right-angled deflections. This reduces flow losses and maintains laminar flow conditions while still allowing the silencer to be positioned flexibly.
Solution Approach 2:
The patent uses a curved or inclined nozzle design instead of sharp right-angled bends. The smooth curvature of the nozzle reduces flow separation and turbulence, maintaining laminar flow conditions while achieving the necessary connection between silencer and valve plate.
3Volume of moving object
If the compressor housing is made smaller, then the compressor dimensions are minimized, but the silencer internal volume is reduced, impairing intake noise damping
Solution Approach 1:
The patent repositions the silencer to the same level as the cylinder head cover, utilizing the horizontal space rather than vertical space below the cylinder head. This dimensional change allows the silencer to maintain adequate internal volume for noise damping while keeping the overall compressor footprint compact.
Solution Approach 2:
The patent changes the spatial arrangement parameters by positioning the silencer horizontally at the same level as the cylinder head cover and using an inclined nozzle with a maximum angle of 45 degrees. This optimization allows for adequate silencer volume within compact compressor dimensions.
4Productivity
If the nozzle is inclined at a maximum angle of -45° to +45° relative to the piston axis, then turbulence and flow losses are reduced, but the nozzle must be longer to reach the suction valve opening
Solution Approach 1:
The patent optimizes the nozzle inclination angle parameter to a maximum of 45 degrees relative to the piston axis, which reduces turbulence and flow losses. The nozzle length is adjusted accordingly to reach the suction valve opening while maintaining this optimal angle, achieving a balance between flow efficiency and spatial constraints.
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 design enhances refrigerant suction efficiency, reduces production costs, and achieves quieter operation by minimizing turbulence and flow losses while allowing for better sound insulation and thermal isolation.
Implementation Method 1
The deflection can disrupt the laminar flow of the refrigerant, which is preferred for low-error operation of the refrigerant compressor, leading to turbulence
Implementation Method 2
The silencer is located outside the cylinder head and has a housing that defines a cavity. The housing includes an intake opening for refrigerant to be drawn into the cavity
Implementation Method 3
Thermal insulation means are provided for the thermal insulation of the intake gas in the cylinder head chamber
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a hermetically encapsulated refrigerant compressor (1) comprising a cylinder (3), a piston (4) arranged in the cylinder (3), said piston having a piston axis (4a), a valve plate (5) having a suction valve opening (6) and a discharge valve (7), a cylinder head (8) on the side of the valve plate (5) facing away from the cylinder (3), a cylinder head cover (10) which has an outlet for compressed refrigerant, and a muffler (12). A connecting piece (11) is arranged on the side of the valve plate (5) facing away from the cylinder (3) as an inlet for refrigerant to be suctioned in, wherein the connecting piece (11) has a first end (11a) that is arranged on the suction valve opening (6) and a second end (11b). The connecting piece (11) is inclined relative to the piston axis (4a) at a maximum inclination angle (α) of between -45° and +45°. The muffler (12) has a housing (12a) having an intake opening (12b) into which the second end (11b) of the connecting piece (11) opens.