Fluid dispensing system with nozzle heater

Patent metadata

Field	Value
Publication number	US-9480996-B2
Application number	US-201313946766-A
Country	US
Kind code	B2
Filing date	Jul 19, 2013
Priority date	Sep 18, 2012
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A fluid dispensing system includes a first fluid supply device for supplying a first fluid, a second fluid supply device for supplying a second fluid, a first heater for heating the first fluid to a first predetermined temperature and a second heater for heating the second fluid to a second predetermined temperature. The dispensing system further includes a nozzle for dispensing the first fluid and the second fluid, the nozzle dispensing the first fluid and the second fluid in intimate contact with one another, the first and second fluids being dispensed at a dispensing temperature, and a nozzle heater, the nozzle heater maintaining the nozzle at a third predetermined temperature independent of the first and/or second predetermined temperatures.

First claim

The invention claimed is:

1. A fluid dispensing system comprising:
a first fluid supply device for supplying a first fluid;
a second fluid supply device for supplying a second fluid;
a first heater for heating the first fluid to a first predetermined temperature;
a second heater for heating the second fluid to a second predetermined temperature;
a nozzle having outlets for dispensing the first fluid and the second fluid from the system, the nozzle dispensing the first fluid and the second fluid in intimate contact with one another, the first and second fluids being dispensed at a dispensing temperature, the nozzle comprising a plurality of laminated plates; and
a nozzle heater externally positioned on the nozzle in direct contact with an outwardly facing surface of a front plate of the nozzle to apply heat directly to the nozzle, the nozzle heater maintaining the nozzle at a third predetermined temperature independent of the first and/or second predetermined temperatures,
wherein the first fluid supply device is positioned in abutting relationship with the second fluid supply device and in non-abutting relationship with the nozzle, and the second fluid supply device is positioned in abutting relationship with the nozzle.

2. The fluid dispensing system of claim 1 wherein the second heater is an air heater and wherein the second fluid is air.

3. The fluid dispensing system of claim 1 including at least one temperature sensor for sensing the temperature of the nozzle heater.

4. The fluid dispensing system of claim 3 including a controller, wherein the temperature sensor transmits a signal to the controller to control the third predetermined temperature.

5. The fluid dispensing system of claim 1 wherein the nozzle heater is positioned in a heater block and wherein the heater block is in direct contact with, or close proximity to, the nozzle.

6. The fluid dispensing system of claim 1 further comprising a controller, wherein the controller maintains the third predetermined temperature at about the dispensing temperature.

7. The fluid dispensing system of claim 1 including a plurality of nozzles and wherein the nozzle heater maintains the plurality of nozzles at the third predetermined temperature.

8. The fluid dispensing system 1 wherein the nozzle heater is an electrical heater.

9. The fluid dispensing system of claim 1 wherein the first and second predetermined temperatures are independent of one another.

10. The fluid dispensing system of claim 1 , wherein the nozzle heater includes a fastener hole configured to receive a fastener to secure the nozzle heater to the nozzle.

Assignees

• Illinois Tool Works
• Ilinois Tool Works Inc

Inventors

• Reiland Douglas H
• Flatt Larry W
• Jenkins Paul M

Classifications

• B05C11/1042

  provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus · CPC title

• B05C5/0283

  Flat jet coaters, i.e. apparatus in which the liquid or other fluent material is projected from the outlet as a cohesive flat jet in direction of the work · CPC title

• B05C9/06

  for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work · CPC title

• B05B15/50

  Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter · CPC title

• B05B7/1606 Primary

  the spraying of the material involving the use of an atomising fluid, e.g. air (B05B7/168, B05B7/1686, B05B7/20, B05B7/22 take precedence) · CPC title