Nozzle structure

Abstract

This invention relates to a nozzle structure, comprising a base, a cover, and a guide portion. The base has an air inlet, the cover has a flat surface, and a yarn channel is provided between the base and the cover. A downwardly protruding guide portion is provided on the inner side of the cover, creating a height variation zone in the yarn channel. Airflow is introduced through the air inlet and deflected along the guide surface of the guide portion. The height variation zone guides part of the airflow to the flat surface, creating an airflow distribution with velocity differences, thereby promoting yarn entanglement. Through this guide surface design, the airflow can be guided more effectively, improving the stability and uniformity of yarn entanglement, while also considering airflow utilization efficiency, structural simplification, and reduced manufacturing costs.

Claims

1. A nozzle structure comprising: A base with an air inlet; A cover is disposed on the base and has a flat portion on the side surface facing the air outlet. A yarn channel is provided between the cover and the base for a yarn to pass through. A guide portion is located on the flat portion and protrudes towards the base, so that the yarn channel forms a height variation zone at the guide portion. The guide portion has a guide surface whose height gradually decreases along the airflow direction. The axial direction of the air outlet is perpendicular to the direction of the yarn's travel and extends to the guide surface. The airflow is deflected and guided along the guide surface to guide the airflow through the height variation zone, causing some of the airflow to concentrate towards the flat portion, thereby forming an airflow with a speed difference, which in turn causes the yarn to become entangled.

2. The nozzle structure as described in claim 1, wherein the guide portion is integrally formed on the planar portion.

3. The nozzle structure as described in claim 1, wherein the cover has a connecting portion for providing the guide portion.

4. The nozzle structure as described in claim 1, wherein the height of the guide portion is greater than or equal to 0.05 mm.

5. The nozzle structure as described in claim 4, wherein the ratio of the cross-sectional area of ​​the yarn channel to the cross-sectional area of ​​the yarn channel in which the guide portion is located is 1:0.6 to 1:0.

9.

6. The nozzle structure as described in claim 1, wherein the guide surface is used to continuously deflect the airflow along its surface.

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