Dispensing system and a method for its operation, cleaning unit and dispensing unit

A dispensing system for dispensing a fluid, the fluid being water or a water-based mixture, the system comprising a dispensing unit and a cleaning unit, the dispensing unit comprising:

• a connection unit for connecting the dispensing unit to a supply of the fluid,
• a dispensing head for dispensing the fluid;
• a conduit for guiding the fluid from the connection unit to the dispensing head;
• wherein the cleaning unit comprises:
• a cleaning mixture preparation unit for providing a cleaning mixture to the connection unit;
• a cleaning fluid delivery unit configured to deliver cleaning fluid to the dispensing unit via a cleaning attachment unit;
• a receptacle unit configured to accommodate the dispensing head and to receive fluids exiting the dispensing head;
• means, comprising a steam generation unit, for providing the cleaning fluid to the conduit, the cleaning fluid comprising steam or water or air or a mixture of two or more of steam and air and water and a cleaning agent;
• the dispensing system comprising a mixing unit or mixing valves for selecting from a flow of water from a water supply or from a flow of cleaning mixture, and/or for mixing the flow of water with the flow of cleaning mixture,
• and wherein the mixing unit or mixing valves are part of the connection unit, or wherein the mixing unit or mixing valves are part of the cleaning attachment unit and water from a water mixer is guided from the connection unit into the cleaning attachment unit,
• and wherein the cleaning unit comprises, for providing the cleaning mixture, a second mixer, said second mixer being a venturi injector, for admixing a cleaning pre-mix to a flow of steam, thereby creating the cleaning mixture,
• and wherein the cleaning unit comprises, for providing the cleaning pre-mix, a third mixer, said third mixer being a mixing chamber, for admixing air to a flow of cleaning water, thereby creating the cleaning pre-mix,
• and wherein the cleaning unit comprises, for providing the flow of cleaning water, a fourth mixer, said fourth mixer being an additive mixer, for admixing a cleaning agent to a flow of water, thereby creating the cleaning water.