Adjustable vane pump

Abstract

An adjustable vane pump having a bowl-shaped hosing and having a rotor rotatably supported about a rotor axis and guiding at least one vane that is supported such that it can move in the radial direction. The housing includes a first thrust surface and a second thrust surface for the rotor, including the vane, which are transverse to the rotor axis. The second thrust surface is formed by a housing floor. The housing includes an adjustment housing, disposed between the thrust surfaces, which encloses the rotor, including the vane, and can be displaced transverse to the rotor axis, and includes a primary housing that encloses the adjustment housing. A suction intake and a pressure outlet are provided in the housing floor, and the axial extension of the primary housing is greater than the axial extension of the adjustment housing, the rotor, and/or the at least one vane.

What is claimed is: 
     
         1 . An adjustable vane pump comprising: a bowl-shaped hosing and a rotor rotatably supported about a rotor axis and guiding at least one vane supported such that the vane can move in the radial direction, wherein the housing includes a first thrust surface and a second thrust surface for the rotor, including the vane, which are transverse to the rotor axis, wherein the second thrust surface is formed by a housing floor, and wherein the housing includes an adjustment housing, disposed between the thrust surfaces, which encloses the rotor, including the vane, and can be displaced transverse to the rotor axis, and wherein the housing includes a primary housing that encloses the adjustment housing, and wherein the axial extension of the primary housing is greater than the axial extension of the adjustment housing, the rotor, and/or the at least one vane, and wherein a suction intake and a pressure outlet are provide in the housing floor, wherein the suction intake is encircled by a gasket provided on the housing floor such that an upper side of a provided channel, facing the housing floor, is connectable in a sealed manner to the suction intake, under tension. 
     
     
         2 . The vane pump as set forth in  claim 1 , wherein the axial extension of the adjustment housing, the rotor and the vane is of equal size. 
     
     
         3 . The vane pump as set forth in  claim 1 , wherein the axial extension of the primary housing is greater than the axial extension of the adjustment housing, the rotor, and/or the vane in the range of 0.001 mm-0.01 mm. 
     
     
         4 . The vane pump as set forth in  claim 1 , wherein the adjustment housing, the rotor, and the vane are made of the same material and/or exhibit the same thermal expansion behavior. 
     
     
         5 . The vane pump as set forth in  claim 1 , wherein the first thrust surface is formed by a housing cover. 
     
     
         6 . (canceled) 
     
     
         7 . The vane pump as set forth in  claim 1 , further including a rotor shaft that drives the rotor, passes through the housing floor, and is rotatably supported via a thrust ring on a bearing bushing provided on the housing floor; and wherein the gasket also encloses the region of the bearing bushing. 
     
     
         8 . The vane pump as set forth in  claim 1 , further including an external housing enclosing the primary housing, wherein the external housing extends beyond the primary housing in the axial direction, and the housing floor, at least in sections, is enclosed by the external housing. 
     
     
         9 . The vane pump as set forth in  claim 1 , wherein the housing floor has an encircling seal on its radial outer side, for creating a sealing connection to an accommodation that receives the vane pump. 
     
     
         10 . The vane pump as set forth in  claim 1 , wherein the axial extension of the primary housing is greater than the axial extension of the adjustment housing, the rotor, and/or the vane in the range of 0.005 mm-0.05 mm. 
     
     
         11 . The vane pump as set forth in  claim 1 , wherein the vane pump is disposed in an accommodation that receives the vane pump. 
     
     
         12 . A vane pump disposed in an accommodation and comprising: a bowl-shaped hosing and a rotor rotatably supported about a rotor axis and guiding at least one vane supported such that the vane can move in the radial direction, wherein the housing includes a first thrust surface and a second thrust surface for the rotor, including the vane, which are transverse to the rotor axis, wherein the second thrust surface is formed by a housing floor, and wherein the housing includes an adjustment housing, disposed between the thrust surfaces, which encloses the rotor, including the vane, and can be displaced transverse to the rotor axis, and wherein the housing includes a primary housing that encloses the adjustment housing, and wherein a suction intake and a pressure outlet are provided in the housing floor, wherein the suction intake is connected to a channel, wherein the pressure outlet opens into a pressure channel, which runs along the outer side of the wall of the channel, and wherein with an increase in the pump pressure, the pressure in the pressure channel increases, thereby pressing the housing floor more strongly against the primary housing and pressing the primary housing more strongly against the housing cover.