Diaphragm Compressor Valve Sticking Suppression via Intermediary Section

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Solution Overview

Problem

In existing valve structures, sticking between the valve and its opposing region can lead to channel opening and closing failures, which are not effectively addressed.

Innovation Solution

A structure with a sticking suppressing section in the region where the valve and substrate are not joined, along with a force developing section to prevent fluid leaks, is implemented, using materials and configurations that prevent sticking and enhance performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the valve is brought into contact with the opposed region to close the channel, then the channel closing function is improved, but the valve may stick to the opposed region causing opening and closing failure

Engineering Contradiction:

Improvechannel closing functionVSAvoidvalve sticking

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A sticking suppressing section is introduced as an intermediary element between the valve and the opposed region. This section prevents direct contact and sticking while allowing the valve to perform its closing function, thus resolving the contradiction between reliable channel closing and preventing valve sticking.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the valve is separated from the opposed region to open the channel, then the channel opening function is improved, but the valve may not close properly causing fluid leaks

Engineering Contradiction:

Improvechannel opening functionVSAvoidfluid leaks

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The sticking suppressing section acts as a mediator that enables proper valve closure by preventing sticking, thereby allowing the valve to separate cleanly from the opposed region for reliable channel opening while maintaining proper sealing to prevent fluid leaks.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Strength

If the valve and substrate are joined throughout the contact region, then the structural strength is improved, but the valve sticking problem occurs

Engineering Contradiction:

Improvestructural strengthVSAvoidvalve sticking

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The contact region between the valve and substrate is segmented into joined and non-joined areas. The sticking suppressing section creates a deliberate non-joined region that prevents sticking while the joined regions provide structural strength, resolving the contradiction between strength and sticking prevention.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the valve-substrate contact area are given different properties: some regions are joined for structural strength while the sticking suppressing section creates a non-joined region for sticking prevention, achieving local differentiation that resolves the contradiction.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11098704B2Structure, diaphragm-type compressor, cooler, projector, and method for manufacturing structure

Publication Date: 2021.08.24 SEIKO EPSON CORP

AI summary

A structure according to an embodiment includes a first substrate including a first valve and a second substrate joined to the first substrate. The structure includes a region where the first valve and the second substrate are not joined. A sticking suppressing section is provided in at least one of the first valve and the second substrate in the region. By configuring the structure in this way, it is possible to suppress sticking of the first valve to the second substrate in the structure including the first substrate including the first valve and the second substrate joined to the first substrate.