Threaded Stop Valve Plug Structure for Compact Sealing
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Solution Overview
Problem
Conventional stop valves for air conditioners have a large size due to the cap design, which increases processing complexity and size, and requires additional processing steps.
Innovation Solution
A stop valve design featuring a valve seat with a fluid channel and mounting hole at a preset angle, a valve core with a connecting hole and internal thread, and a plugging member with external threads for connection, along with a sealing member for improved sealing and dust prevention, made from plastic materials to reduce size and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cap with internal thread and external thread structure is used to seal the valve opening, then sealing function is achieved, but the overall size of the stop valve increases
Solution Approach 1:
The patent merges the sealing function and dust prevention function into a single integrated plugging member that combines a rod body for threaded connection with the valve core and a covering part that seals the mounting hole opening. This eliminates the need for a separate cap structure, achieving sealing while reducing overall size.
Solution Approach 2:
The plugging member is designed with the covering part nested over the mounting hole opening, creating a compact structure where the rod body extends into the valve core and the covering part protrudes outward to seal the opening. This nested arrangement minimizes the occupied space while maintaining sealing effectiveness.
2Reliability
If a cap with internal thread and external thread structure is used to seal the valve opening, then sealing function is achieved, but processing steps and processing difficulty increase
Solution Approach 1:
The patent combines multiple functions (sealing, dust prevention, and structural support) into a single plugging member component, eliminating the need for separate cap parts with internal and external threads. This integration significantly reduces the number of processing steps required during manufacturing.
Solution Approach 2:
The plugging member is segmented into a rod body part for threaded connection and a covering part for sealing, allowing each part to be optimized independently while simplifying the overall manufacturing process compared to traditional cap structures.
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 reduces the overall size and manufacturing complexity of the stop valve while maintaining effective sealing and dust prevention, without increasing the occupied space.
Implementation Method 1
a first external thread matched with the first internal thread is disposed on the rod body part, the rod body part is connected with the connecting hole through threads
Implementation Method 2
the covering part protrudes out of an end portion of the mounting hole and is able to enable the covering part to abut against the end portion of the mounting hole
Implementation Method 3
a sealing member, which is disposed between the end portion of the mounting hole and the covering part
Data Source
AI summary
Provided is a stop valve, including: a valve seat provided with a fluid channel and a mounting hole, the fluid channel communicates with the mounting hole, and an extending direction of the mounting hole and an extending direction of the fluid channel are disposed at a preset angle; a valve core, which is mounted in the mounting hole, a connecting hole is formed in the valve core, and a first internal thread is disposed in the connecting hole; a plugging member, which includes a rod body part and a covering part, a first external thread matched with the first internal thread is disposed on the rod body part, the rod body part is connected with the connecting hole through threads, the covering part is disposed at an end portion of the rod body part, and the covering portion protrudes out of an end portion of the mounting hole.