Pump and domestic appliance having such a pump

A pump for domestic appliances such as dishwashers or washing machines, said pump having:

• a pump chamber with an inflow, an outflow, and a pump chamber bottom,
• an impeller for conveying water in said pump chamber, said impeller running above said pump chamber bottom, and
• at least one flow guide vane radially outside said impeller, said at least one flow guide vane being arranged stationarily and run helically with a pitch running in
• a direction of rotation of said impeller toward said pump chamber bottom, said pump being configured with said impeller to function as a centrifugal pump with a central axial intake of said water to be conveyed through said inflow, and with a radial discharge of said water to be conveyed through said outflow,
• wherein:
• a) a pitch height of said at least one flow guide vane amounts to 70% to 130% of a diameter of an external wall of said pump chamber, and/or
• b) at least one guide blade is provided, one said guide blade being arranged in a radially outer region of said at least one flow guide vane, said at least one guide blade being curved and protruding in an axial direction from said flow guide vane, and/or
• c) said pump chamber is arranged in an axial direction below said impeller such that said impeller is arranged between said pump chamber bottom and said inflow, a free end of said at least one flow guide vane reaching down to a distance of at most 2 cm or 20% of a diameter of said pump chamber away from said pump chamber bottom.