Pressure Regulator Assembly for Stable Spring Load and Leak Prevention
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Solution Overview
Problem
The existing pressure regulator technology faces issues with individual differences due to size tolerance variations among components, leading to load variations and potential function loss or leakage, particularly due to the insertion method of the pressure regulating spring and the cylindrical leading end of the pressure regulating valve body.
Innovation Solution
The pressure regulating spring is set in a designated load position during assembly, with the valve seated seat and pressure regulating valve body having matching diameters and a tapered shape for secure contact, and the use of a high-polymer buffer for elastic sliding, ensuring uniform contact and reduced leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pressure regulating spring is inserted from the outlet port before attachment of the outlet cover and the piston pressure regulating valve is subsequently inserted, then the assembly process is simplified, but there is a large individual difference between products due to size tolerance variations
Solution Approach 1:
The patent applies preliminary action by pre-setting the pressure regulating spring to a designated load position during assembly before final attachment. This ensures that the spring is positioned accurately with the correct load characteristics before the piston pressure regulating valve is inserted, thereby reducing individual differences caused by size tolerance variations while maintaining simplified assembly procedures.
2Manufacturing precision
If the valve seated seat and pressure regulating valve body have matching diameters with a tapered shape for secure contact, then contact uniformity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs spheroidality by implementing a tapered shape on both the valve seated seat and the pressure regulating valve body. This curved/tapered geometry ensures uniform contact between the components when assembled, improving contact uniformity and reducing leakage while the matching diameters maintain manufacturing feasibility through standard turning operations.
3Reliability
If a high-polymer buffer is used for elastic sliding between the valve seated seat and pressure regulating valve body, then leakage is reduced, but the device complexity increases
Solution Approach 1:
The patent uses a high-polymer buffer as an intermediary element placed between the valve seated seat and the pressure regulating valve body. This buffer provides elastic sliding capability that ensures uniform contact and prevents leakage, while being a simple single-component solution that does not significantly increase overall device complexity.
4Stability of the object's composition
If the pressure regulating spring is set in a designated load position during assembly, then load stability is improved, but assembly time increases
Solution Approach 1:
The patent applies preliminary action by pre-setting the pressure regulating spring to a designated load position during the assembly process. This ensures load stability and consistent performance characteristics, while the integration of this step into the overall assembly sequence minimizes the additional time required compared to post-assembly adjustments.
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 approach stabilizes the pressure load, reduces individual differences among products, and prevents function loss or leakage, ensuring consistent performance and quality by maintaining uniform contact between the valve seated seat and pressure regulating valve body.
Implementation Method 1
a pressure regulating spring 8 that has a predetermined load and that is arranged in an atmosphere chamber 61 provided concentrically in parallel with the pressure regulation chamber 4
Implementation Method 2
the valve seated seat 31 is provided slidably, in an axial direction of the path 2, in a recessed part formed in the valve seated seat holding member 33 through a buffer 93 formed from a high-polymer material having elasticity
Data Source
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AI summary
To reduce an individual difference between products due to a size tolerance of each of a valve seated seat holding member, a valve seated seat, a piston pressure regulating valve, and a main body part affected by a load of a pressure regulating spring, or a load variation at a set point of the pressure regulating spring and to provide a regulator without a function loss due to a damage, leakage failure, or the like of the valve seated seat. A pressure regulating valve body 5 closely in contact with a valve seated seat 31, and a piston unit 6 that is formed around an outer periphery thereof and that affects a pressure regulating spring 8 are formed separately, the two forming a piston pressure regulating valve 7. The pressure regulating valve body 5 inserted from an inlet port 21 into a path 2 and the piston unit 6 inserted from an outlet port 22 into the path 2 are fit to each other in an intended axial direction position and subsequently fixed by at least one of press-fitting and welding.