Pump

Abstract

A liquid pump has a rotor in a pump housing which has a pump chamber, a pump base, a pump-chamber wall and a cover. The rotor rotates just above the pump base, the pump-chamber wall being provided around the outside of and slightly spaced apart from the rotor and having a heating means thereon. An inlet to the rotor is provided centrally in the axial direction towards the rotor and an outlet from the pump housing is provided externally at the periphery of the pump-chamber wall. Blade-like guiding elements which are integrally injection-moulded thereon are arranged on the pump base, radially outside the impeller.

1 . A pump, in particular a liquid pump, including a rotor or an impeller in a pump housing which comprises a pump chamber, a pump bottom, a pump chamber wall as well as a cover, wherein said rotor rotates above said pump bottom at a small distance thereto, wherein around said rotor said pump chamber wall is provided with a heating means thereon, wherein an inlet to said rotor is provided centrally and in axial direction towards said rotor and an outlet from said pump housing is provided on an outer periphery of said pump chamber wall, wherein guide elements are provided at said pump bottom, which are arranged radially outside said rotor. 
     
     
         2 . The pump according to  claim 1 , wherein said pump bottom is configured integrally and in one piece with said guide elements thereon. 
     
     
         3 . The pump according to  claim 1 , wherein said bottom is of plastic. 
     
     
         4 . The pump according to  claim 1 , wherein said guide elements are configured such that a liquid current after exiting said rotor encounters said pump chamber wall at an acute angle. 
     
     
         5 . The pump according to  claim 1 , wherein said guide elements are configured such that said liquid current after encountering said pump chamber wall streams further along said pump chamber wall up to said outlet. 
     
     
         6 . The pump according to  claim 1 , wherein said guide elements extend in a curved manner in radial direction. 
     
     
         7 . The pump according to  claim 1 , wherein said guide elements are guide blades. 
     
     
         8 . The pump according to  claim 1 , wherein said guide elements are bent or bent-off into said rotation direction of said rotor. 
     
     
         9 . The pump according to  claim 1 , wherein said guide elements extend almost as far as up to said pump chamber wall. 
     
     
         10 . The pump according to  claim 1 , wherein said rotor is slightly more embedded into said pump bottom than lower parts of said guide elements. 
     
     
         11 . The pump according to  claim 10 , wherein said rotor has rotor blades, and said rotor blades in the course thereof have a steady continuation in said guide elements. 
     
     
         12 . The pump according to  claim 10 , wherein said continuation in said guide elements is also with a curvature or a curved form away from said pump bottom. 
     
     
         13 . The pump according to  claim 1 , wherein said pump chamber with said cover on top extends almost up to said rotor or to an upper side of said rotor facing said inlet. 
     
     
         14 . The pump according to  claim 13 , wherein said cover is configured as upper boundary of said pump chamber around said inlet radially outside said rotor extending away again from said rotor outwards, wherein said region is above said guide elements. 
     
     
         15 . The pump according to  claim 1 , wherein 3 to 20 of said guide elements are provided. 
     
     
         16 . The pump according to  claim 15 , wherein as much of said guide elements as said blades on said rotor or impeller, respectively, are provided. 
     
     
         17 . The pump according to  claim 1 , wherein said outlet from said pump chamber is arranged radially outside on said pump chamber and is configured as a course ascending more and more upwards away from said pump bottom of said pump chamber having a ring shape in said upper region. 
     
     
         18 . The pump according to  claim 17 , wherein said outlet leads out of said pump chamber in radial direction. 
     
     
         19 . The pump according to  claim 1 , wherein said pump chamber wall is configured integrally or in one piece with said heating element thereon and without a joint or the like into said circumferential direction.