Method for operating a suction device of a textile machine, and a suction device and a textile machine

Patent metadata

Field	Value
Publication number	US-11535481-B2
Application number	US-202016900916-A
Country	US
Kind code	B2
Filing date	Jun 13, 2020
Priority date	Jun 14, 2019
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A method is provided for operating a suction device of a textile machine having a plurality of workstations wherein an air flow and a vacuum are produced with aid of the suction device. The method includes filtering the air flow with a filter element, and determining a loss of pressure or volume flow at the filter element. Based on the loss of pressure or the volume flow, an actual value is calculated for present maximum vacuum-requiring operations of the workstations that can be simultaneously executed. Based on the number of operating workstations, a setpoint value is determined for the maximum vacuum-requiring operations of the workstations that can be simultaneously executed. The setpoint value is compared to the actual value for control of the suction device.

First claim

The invention claimed is:

1. A method for operating a suction device of a textile machine having a plurality of workstations wherein an air flow and a vacuum are produced with aid of the suction device, the method comprising:
filtering the air flow with a filter element;
determining a loss of pressure or volume flow at the filter element;
based on the loss of pressure or the volume flow, calculating an actual value for present maximum vacuum-requiring operations of the workstations that can be simultaneously executed;
based on the number of operating workstations, determining a setpoint value for the maximum vacuum-requiring operations of the workstations that can be simultaneously executed; and
comparing the setpoint value to the actual value for control of the suction device.

2. The method as in claim 1 , wherein when the actual value reaches or falls below the setpoint value, a signal is generated for need of a cleaning of the filter element or the filter element is cleaned in an automated manner.

3. The method as in claim 1 , wherein a number of the executable vacuum-requiring operations is limited if the actual value exceeds the setpoint value.

4. The method as in claim 1 , wherein the setpoint value is used for controlling the textile machine to optimize production or energy consumption of the suction device.

5. The method as in claim 4 , wherein an optimization identifier is manually set in the textile machine, the optimization identifier defining a compromise between production optimization and energy consumption optimization.

6. The method as in claim 1 , wherein the setpoint value is modified based on anticipation of additional workstations becoming operable.

7. The method as in claim 3 , wherein energy consumption of the suction device is predicted based on the setpoint value.

8. The method as in claim 1 , wherein at least one of the executable vacuum-requiring operations is switched off when a cleaning of the filter element is indicated by the comparison of the setpoint value to the actual value and is not carried out.

9. The method as in claim 1 , wherein the actual value is controlled or regulated with a control system or a regulating system.

10. The method as in claim 1 , wherein the loss of pressure is measured with a pressure sensor upstream or downstream of the filter element or is calculated based on power consumption of a ventilator that produces the volume flow in the suction device.

11. A suction device for removing and filtering dust and fiber-loaded air in a textile machine that has a plurality of workstations, comprising:
a ventilator disposed to produce an air flow and provide a vacuum;
a filter element disposed to filter the air flow; and
an evaluation unit configured to carry out the method according to claim 1 .

12. The suction device as in claim 11 , further comprising a signal unit that signals a need to clean the filter element or signals that an automated cleaning of the filter element has started.

13. The suction device as in claim 11 , further comprising a control unit or regulating unit configured with the ventilator to control the actual value.

14. The suction device as in claim 11 , further comprising a pressure sensor disposed to measure pressure upstream or downstream of the filter element or a measuring unit to detect power consumption of the ventilator for calculating the loss of pressure based on the power consumption.

15. A textile machine, comprising:
a plurality of vacuum-requiring workstations; and
the suction according to claim 11 .

Assignees

• Rieter Ag Maschf

Inventors

• Stephan Adalbert
• Stang Bernhard

Classifications

• D01H11/005 Primary

  with blowing and/or suction devices (in general A47L7/00; in cooperation with thread breakage detecting means D01H13/1691) · CPC title

• D01H4/50 Primary

  for rotor spinning · CPC title

• B65H54/707 Primary

  Suction generating system · CPC title

• B01D46/10

  Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces · CPC title