Dispensing system with for delivering an operating fluid

Abstract

The invention relates to an assembly comprising a flexible hose (16) and a control unit (17), a heating wire (27, 28) being guided along an axial direction of the hose and embedded. The control unit is designed to deliver electrical power to the heating wire, in order to heat a medium conveyed by the dispensing hose or an outer surface of the hose. The invention also relates to a dispensing system (13, 13′) for delivering an aqueous urea solution and/or for delivering a compressed or liquefied gas. The dispensing system comprises a conveying device for the operating fluid, a dispensing valve (15) for discharging the operating fluid, and a flexible dispensing hose (16) which connects the conveying device to the dispensing valve to allow positioning of the dispensing valve on a filler neck of a vehicle tank. The dispensing hose has a hose wall in which a heating wire (27, 28) guided along an axial direction of the dispensing hose is embedded. The dispensing hose and the dispensing valve are designed to be operated in a zone 1 according to the ATEX Workplace Directive 1999/92/EC, the dispensing system having an installation space designed for shielding with respect to a zone according to the ATEX Workplace Directive 1999/92/EC and a control unit which is positioned in this installation space and is designed to deliver electrical power to the heating wire in order to heat an operating fluid conveyed by the dispensing hose. Freezing of the operating fluid can be avoided by these measures in an economical and failsafe manner.

Dependencies are inferred from the claim text.