Barbed Refrigerant Hose Fitting for Leak Sealing Without Crimping
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Solution Overview
Problem
Conventional refrigerant hose fittings face challenges in forming a seal that prevents leakage of refrigerant in a vapor state without compromising the hose's barrier layer, and are not easily portable for quick connections, especially in applications with numerous connections like computer servers.
Innovation Solution
A fitting with a barbed portion featuring a distal barb with a curved edge for easy insertion and a proximal barb with a sharp edge for enhanced grip, allowing quick and secure attachment to the refrigerant hose without crimping, which maintains the integrity of the barrier layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fitting is crimped tightly to form a seal with the refrigerant hose, then the sealing performance is improved, but the barrier layer of the hose may be compromised
Solution Approach 1:
The patent replaces the traditional crimping mechanical system with a barbed insertion system. The barbs engage with the hose internally to provide sealing and retention forces without requiring external crimping compression, thereby eliminating the risk of crimping-induced damage to the barrier layer while maintaining reliable sealing performance.
Solution Approach 2:
The barbed portion acts as an intermediary mechanism between the fitting and the hose. Instead of directly compressing the hose with crimping force, the barbs provide a distributed engagement mechanism that achieves sealing through controlled insertion and mechanical interlocking, reducing concentrated stress on the barrier layer.
2Reliability
If conventional crimping machines are used to form hose-fitting connections, then reliable sealing is achieved, but portability and ease of operation are reduced
Solution Approach 1:
The patent eliminates the need for complex crimping machines by using a simple barbed insertion mechanism that can be performed manually or with minimal tools. This substitution transforms a process requiring dedicated equipment into a portable field operation while maintaining connection reliability through the mechanical interlocking action of the barbs.
Solution Approach 2:
The barbed fitting design enables self-service installation where the fitting itself provides the sealing and retention mechanisms through its barbed structure. The installer simply needs to insert the fitting into the hose, and the barbs automatically engage to create the seal, eliminating the need for external crimping equipment or complex installation procedures.
3Reliability
If crimping is performed on thousands of hose-fitting connections in server applications, then all connections are sealed, but the time and productivity are significantly reduced
Solution Approach 1:
By replacing the time-consuming crimping process with a quick barbed insertion method, the patent enables rapid assembly of multiple connections. Each connection can be made in seconds without requiring setup or operation of crimping equipment, dramatically increasing productivity in applications requiring numerous hose-fitting connections while maintaining connection integrity through the barbed engagement mechanism.
Data Source
AI summary
An example fitting includes: a head portion; and a barbed portion extending axially from the head portion, wherein the barbed portion includes: at least one distal barb having a curved edge, and at least one proximal barb having a sharp edge.