Branch Pipe with Curved Outflow Alignment for Easier Installation

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Solution Overview

Problem

Conventional branch pipes for multi-type air conditioners cause axis offset issues during installation, leading to uneven fluid flow and noise, making them difficult to use in multi-floor or side-by-side installations due to their geometry.

Innovation Solution

The branch pipe design features a first outflow portion with a curved middle portion aligning the outlet axis with the inflow axis, and includes linear connection pipes that can be aligned before installation, allowing for easier positioning and reducing pressure loss by continuous material connections, with optional 45-degree angled connection pipes for flexible branching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional branch pipe geometry is used, then the branch pipe can separate fluid streams, but the axis offset occurs making piping installation difficult

Engineering Contradiction:
Improvepiping installation easeVSAvoidbranch pipe geometry
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The branch pipe incorporates curved portions at the inlet and outlet sections instead of straight geometric connections. These curved portions allow the pipe to bend and align with the axial directions of connected pipes, eliminating axis offset issues and facilitating easier piping installation while maintaining the branching function.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Ease of operation

If the branch pipe geometry causes axis offset, then installation is difficult, but changing the geometry may affect fluid flow uniformity

Engineering Contradiction:
Improveinstallation convenienceVSAvoidfluid flow uniformity
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The curved portions are designed with specific radii and angles that simultaneously achieve two goals: they allow the pipe to align axially with connected pipes for easy installation, and they guide fluid flow smoothly through the branch pipe to maintain flow uniformity and prevent turbulence or noise.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The branch pipe geometry parameters (curvature radius, bend angle, transition length) are optimized to balance installation convenience and fluid flow characteristics. By adjusting these parameters, the pipe achieves proper axial alignment while maintaining smooth fluid transition and uniform flow distribution.

Inventive Principle:
Principle #35Parameter changes

3Object-generated harmful factors

If conventional branch pipe design is used, then basic branching function is achieved, but noise is caused by uneven fluid flow

Engineering Contradiction:
Improvenoise reductionVSAvoidpipe structure complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The curved portions create smooth transitions for fluid flow, eliminating sharp corners and abrupt direction changes that cause turbulence and noise. The curved geometry naturally guides the fluid through the branch pipe in a controlled manner, reducing harmful flow patterns without requiring additional noise control devices.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentEP3406956B1Branch pipe
Publication Date: 2022.11.16 KAKINUMA KINZOKU SEIKI
  • EP3406956B1 patent drawingFigure 1
  • EP3406956B1 patent drawingFigure 2
  • EP3406956B1 patent drawingFigure 3~4

AI summary

A branch pipe branches fluid from an inflow portion (10) into a first outflow portion (1) and a second outflow portion (2). The middle portion (1B) of the first outflow portion (1) is curved so that the axis of the pipe at the outlet of the first outflow portion (1) is aligned with the axis of the pipe of the inflow portion (10).