Reversing Valve Sleeve Assembly for Stable Capillary Connection
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Solution Overview
Problem
The assembly of capillary tubes with main valves in existing reversing valve technologies is inconvenient, leading to inefficiencies in the assembly process.
Innovation Solution
A reversing valve design that includes a main valve, a pilot valve, and a sleeve, where the sleeve facilitates the connection between the capillary tube and the adapter tube, allowing for easier assembly by passing through mounting holes and being welded using a tunnel furnace, with materials like copper and steel ensuring a stable and efficient connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the capillary tube is directly connected with the main valve after passing through the main valve, then the assembly process is simple, but the assembly convenience is poor and assembly efficiency is low
Solution Approach 1:
The patent introduces a sleeve as an intermediary component between the capillary tube and the main valve. The sleeve passes through the mounting hole and provides a dedicated interface for connecting the capillary tube, making the assembly process more convenient and efficient. The sleeve acts as a mediator that facilitates the connection without requiring direct attachment between the capillary tube and main valve body.
Solution Approach 2:
The patent divides the connection structure into separate components: the main valve body, the sleeve, and the capillary tube. By segmenting the assembly into these distinct parts with the sleeve as an intermediate element, the overall assembly process becomes more manageable and efficient, allowing for easier installation and maintenance.
2Reliability
If the capillary tube is directly connected to the adapter tube, then the structure is simple, but the connection stability is insufficient and abnormal sounds may occur
Solution Approach 1:
The sleeve serves as an intermediary component that provides a stable connection interface between the capillary tube and adapter tube. This intermediate structure ensures reliable connection and prevents abnormal sounds during operation, while the modular design keeps the overall structure manageable.
3Productivity
If the capillary tube insertion depth is not controlled, then the assembly process is simple, but refrigerant throttling may occur causing abnormal sounds
Solution Approach 1:
The sleeve is pre-installed in the mounting hole before the capillary tube is attached. This preliminary action establishes a controlled interface that naturally limits the insertion depth of the capillary tube, preventing refrigerant throttling while maintaining assembly efficiency. The sleeve acts as a guide and stop mechanism in advance.
Solution Approach 2:
The sleeve mediates the connection between the capillary tube and main valve body, providing a controlled interface that prevents excessive insertion. This intermediary structure ensures proper positioning without requiring complex depth control mechanisms, avoiding refrigerant throttling while keeping the assembly process efficient.
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 design enhances assembly efficiency by simplifying the connection process, preventing refrigerant throttling, and ensuring a stable connection that avoids abnormal sounds, while maintaining the normal operation of moving parts.
Implementation Method 1
the sleeve is welded to the adapter tube by a tunnel furnace; and/or, the sleeve is made of copper, and the adapter tube is made of steel. After completing the connection between the sleeve and the adapter tube, the capillary tube is inserted into the sleeve, and the capillary tube is welded to the sleeve
Data Source
AI summary
A reversing valve, and an assembly method of the reversing valve. The reversing valve includes: a main valve including a first valve body and an adapter tube, the first valve body having a first valve cavity, and one end of the adapter tube being in communication with the first valve cavity; a pilot valve including a second valve body and a capillary tube, the second valve body having a second valve cavity, a first end of the capillary tube being in communication with the adapter tube or the first valve cavity, and a second end of the capillary tube being in communication with the second valve cavity; and a sleeve, wherein a side wall of the adapter tube is provided with a first mounting hole in communication with an inner hole of the adapter tube; the first valve body is provided with a second mounting hole in communication with the first valve cavity; the sleeve passes through the first mounting hole or the second mounting hole; and the first end of the capillary tube passes through the sleeve.