Sprayer Nozzle-Adapter Nesting for Pressure-Induced Leakage Control
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Solution Overview
Problem
Existing sprayers for nostrils experience liquid leakage due to increased internal pressure in flow channels during spraying, which occurs when components are separately formed and combined.
Innovation Solution
A sprayer design featuring a nozzle with sub-nozzles and an adapter that includes cores and receivers, where the nozzle and adapter surfaces form a liquid-tight contact in a circular or substantially circular cross-section, reducing leakage by ensuring a secure fluid passage through core paths and chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the nozzle and adapter are formed separately and combined together, then ease of manufacture is improved, but liquid leakage occurs due to increased internal pressure in flow channels during spraying
Solution Approach 1:
The adapter is inserted into the nozzle body, creating a nested structure where the adapter's outer peripheral surface contacts the nozzle's inner peripheral surface. This nesting arrangement allows separate manufacturing of components while ensuring liquid-tight sealing through the interface contact, resolving the contradiction between ease of manufacture and prevention of liquid leakage.
2Reliability
If the contact between nozzle and adapter surfaces is made circular, then liquid tight sealing is improved, but manufacturing precision requirements increase
Solution Approach 1:
The invention applies local quality by creating a circular contact interface at the critical sealing location between the adapter and nozzle. The outer peripheral surface of the adapter and the corresponding inner peripheral surface of the nozzle are designed with circular geometry at the contact portion, ensuring liquid-tight sealing exactly where needed while allowing other portions to have simpler geometries.
Data Source
AI summary
A sprayer includes a nozzle and an adapter. The nozzle includes at least one sub-nozzle having a distal end having a nozzle bore. The adapter includes a coupling pipe, two cores, and receivers. The coupling pipe is connectable to the container to allow fluid passage. Each of the receivers is at a basal end of a corresponding core of the two cores. Each of the receivers has a hole connecting with the coupling pipe to allow fluid passage. The nozzle is attached to the adapter with a core of the two cores received in an internal space of the at least one sub-nozzle and the basal end of the at least one sub-nozzle received in a corresponding receiver of the receivers. The at least one sub-nozzle and the core define a core path in between. The core path connects with the coupling pipe to allow fluid passage. In an attachment state of the nozzle attached to the adapter, an outer surface of the at least one sub-nozzle and a facing surface of the corresponding receiver facing the outer surface are in contact with each other. A contact between the outer surface of the at least one sub-nozzle and the facing surface of the corresponding receiver is in a shape of a perfect circle or substantially a perfect circle in a cross section intersecting with the axial direction.