Vacuum-Assisted Pipe Joining for Skewed Liquid-Tight Branch Seals
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Solution Overview
Problem
There is a need for a method and apparatus to facilitate joining pipes at variable angles and in confined spaces, particularly for plastic piping systems that require branch connections with a liquid-tight seal.
Innovation Solution
A method and apparatus using a heater with a plate to melt the mating surfaces of pipes and a vacuum to create negative pressure, allowing the pipes to be joined at skewed angles with a consistent pressure distribution, forming a strong and liquid-tight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual pressure is applied to push pipes together during joining, then the pipes can be connected, but the pressure distribution becomes inconsistent especially when pipes are at skewed angles
Solution Approach 1:
The patent replaces manual mechanical pressure application with a vacuum system. A vacuum chamber creates uniform negative pressure that automatically distributes force evenly across the entire pipe surface, eliminating the inconsistency caused by manual pressure application at skewed angles.
Solution Approach 2:
The invention uses vacuum (negative pressure) as a pneumatic mechanism to hold and press the pipes together during the heating and joining process. The vacuum chamber creates a controlled atmosphere that applies uniform distributed force across the pipe surfaces, ensuring consistent pressure distribution regardless of pipe angle.
2Adaptability or versatility
If pipes are joined at variable angles in confined spaces, then installation flexibility is improved, but achieving consistent connection strength becomes difficult
Solution Approach 1:
The vacuum system replaces manual positioning and pressure application, allowing pipes to be joined at variable angles while maintaining consistent connection strength. The uniform negative pressure ensures even force distribution across the mating surfaces regardless of the angle between pipes.
Solution Approach 2:
The invention changes the pressure parameter from positive manual pressure to negative vacuum pressure. This parameter change allows the system to accommodate variable pipe angles while maintaining consistent connection strength through uniform distributed force across the entire contact surface.
3Manufacturing precision
If a vacuum system is used to create negative pressure and push pipes together, then consistent pressure distribution is achieved, but the device complexity increases
Solution Approach 1:
The vacuum chamber serves multiple functions: it creates the negative pressure environment, holds the pipes in position, and provides uniform pressure distribution. This multi-functionality reduces the need for separate mechanisms for each function, thereby limiting the increase in overall device complexity.
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 method and apparatus enable efficient and consistent joining of pipes at skewed angles without manual pressure, ensuring a strong and airtight connection by equalizing pressure around the periphery of the joint.
Implementation Method 1
a plate for melting mating surfaces of first and second pipes, or in other words, raising its temperature above its softening temperature
Implementation Method 2
a cap with a vacuum for generating a negative pressure within the first and/or second pipes to push the first and second pipes together and also to hold the first and second pipes against the plate
Data Source
AI summary
An apparatus and method for joining pipes includes a plate for melting mating surfaces of the pipes to be joined. Additionally, the apparatus utilizes a vacuum in order to push the first and second pipes together in lieu of hand or mechanical pressure which may be inconsistent. Additionally, the vacuum allows the pipes to be joined to settle on each other in order to create a pressure about a periphery of the end of the pipe being joined to the other pipe. The consistent pressure creates a very strong joint between the first and second pipes.