Oblique Valve Unit Contact Section for Piston Compressor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Piston compressor valve units experience significant wear due to thermal stress, making them difficult to remove and replace due to corrosion and carbon deposits, leading to operational challenges.
Innovation Solution
A valve unit design with an obliquely aligned peripheral wall contact section that enhances heat dissipation and facilitates easy installation and removal, reducing thermal load and improving power transmission by creating a larger contact area and preventing self-locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve unit is fixed between the cylinder and cylinder head with a parallel contact surface, then the valve unit is securely held in place, but the valve unit experiences significant thermal stress and becomes difficult to remove due to corrosion and carbon deposits
Solution Approach 1:
The oblique contact section is designed to prevent the harmful effects of thermal stress and corrosion from causing self-locking. By orienting the contact surface at an angle, the design preemptively counteracts the tendency for carbon deposits and corrosion to create a tight fit that would prevent removal, allowing the valve unit to be easily extracted after use
Solution Approach 2:
The contact section is oriented obliquely at an angle between 5° and 15° relative to the longitudinal axis, changing the geometric parameter of the contact surface from parallel to angled. This parameter change reduces thermal stress concentration and prevents self-locking due to corrosion and carbon deposits, enabling easy removal while maintaining secure fixation during operation
2Device complexity
If the valve unit has a parallel contact surface with the cylinder, then the structure is simple, but heat dissipation is insufficient leading to thermal stress
Solution Approach 1:
The contact section is oriented obliquely at an angle between 5° and 15° relative to the longitudinal axis, changing the geometric parameter of the contact surface from parallel to angled. This parameter change increases the contact area between the valve unit and cylinder, improving heat dissipation while maintaining structural simplicity
3Ease of manufacture
If the valve unit contact surface is parallel to the longitudinal axis, then manufacturing is simple, but power transmission is insufficient
Solution Approach 1:
The contact section is oriented obliquely at an angle between 5° and 15° relative to the longitudinal axis, changing the geometric parameter from parallel to angled. This orientation increases the contact area and improves power transmission from the piston to the valve unit during the compression stroke, while the oblique angle prevents self-locking and facilitates removal
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 design improves the service life of valve units by reducing thermal stress, simplifying installation and removal, and preventing corrosion and carbon deposits, thus enhancing the operational efficiency of piston compressors.
Implementation Method 1
a peripheral wall of the housing of the valve unit surrounding the longitudinal axis of the valve unit has at least one contact section, which is intended for contact with a contact surface on the cylinder or cylinder head of a piston compressor and extends obliquely the longitudinal axis of the valve unit... creates a larger contact area between the valve unit and the adjacent parts of the piston compressor... enables increased heat dissipation from the valve unit
Implementation Method 2
the valve units are exposed to considerable thermal stress due to the heat generated during the compression of gases
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A valve assembly for a piston compressor comprises a housing in which at least one inlet valve and at least one outlet valve are arranged, and which has a first cylinder-head-side surface and a second cylinder-side surface facing away from it, both extending transversely to a longitudinal axis of the valve assembly. A circumferential wall of the valve assembly housing surrounding the longitudinal axis of the valve assembly has at least one contact section which is designed to abut a contact surface on the cylinder or cylinder head and extends obliquely to the longitudinal axis of the valve assembly.