Piston Compressor Valve Arrangement with Frustopyramidal Suction Section

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Solution Overview

Problem

Existing piston compressors face challenges in optimizing the arrangement of suction and discharge valve sections to improve performance without significantly increasing dead volume, leading to lower volumetric and isentropic efficiencies.

Innovation Solution

The valve arrangement features a frustopyramidal or frustoconical form for the suction valve section with self-actuated check valves, including reed valves and finger blades, and a perpendicular discharge valve section, which enhances fluid flow area without substantially increasing dead volume.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the suction valve section is designed with a frustopyramidal or frustoconical form, then the fluid flow area is increased, but the device complexity increases

Engineering Contradiction:

Improvefluid flow areaVSAvoidvalve arrangement complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The suction valve section is designed with a frustopyramidal or frustoconical form, utilizing curved and angled surfaces instead of flat planes. This geometric curvature increases the fluid flow area and improves flow dynamics while maintaining a manageable structural complexity through standardized geometric forms.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Productivity

If the suction valve section uses self-actuated check valves with reed valves and finger blades, then the volumetric efficiency is enhanced, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvevolumetric efficiencyVSAvoidvalve component precision

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

Self-actuated check valves with reed valves and finger blades are employed, which automatically open and close based on pressure differential without external actuation. This self-service mechanism enhances volumetric efficiency by precisely controlling fluid flow timing while reducing the need for complex external control systems, thereby balancing manufacturing precision requirements.

Inventive Principle:

Principle #25Self-service

3Loss of energy

If the discharge valve section is arranged perpendicular to the cylinder longitudinal axis, then the isentropic efficiency is improved, but the space utilization decreases

Engineering Contradiction:

Improveisentropic efficiencyVSAvoidhead section volume utilization

Core Design Contradiction:

Loss of energyVSVolume of stationary object

Solution Approach 1:

The discharge valve section is arranged perpendicular to the cylinder longitudinal axis, creating an asymmetric configuration relative to the suction valve section. This asymmetric arrangement improves isentropic efficiency by optimizing discharge flow paths and reducing energy losses, while the overall head section design compensates for space utilization through the frustopyramidal suction valve geometry.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentEP4536966B1Piston compressor valve arrangement and method of use

Publication Date: 2025.08.06 HEATEN AS

Figure 1
Figure 2a~2b
Figure 2c~2d

AI summary

A valve arrangement for a piston compressor, the valve arrangement comprising: a suction valve section (200); and a discharge valve section (300); wherein the suction valve section (200) and discharge valve section (300) together form a working chamber head section (1200), and the suction valve section (200) has a frustopyramidal form.