Yarn texturing apparatus with heat sensor in stuffer box to control heat flow
US5088168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G1/122
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A yarn texturing apparatus is disclosed which includes a nozzle having a yarn duct therethrough, and a perforated stuffer box at the outlet end of the duct. Heated air is introduced into the duct, and the air is heated by a heater which is positioned in the air supply line leading to the nozzle. The output of the heater is controlled by a temperature sensor which is positioned inside the stuffer box. Also, the nozzle comprises two confronting sections which can be separated to facilitate yarn thread-up, and a valve is provided in the supply line to divert the heated air to an exhaust line when the nozzle is opened. A second temperature sensor is positioned in the supply line and is operative when the nozzle is opened to regulate the output of the heater and avoid large fluctuations of its output. In a further embodiment, the heater is controlled by a circuit which stores the signal from the temperature sensor in the stuffer box, and this stored signal is utilized to control the heater when the nozzle is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.