Gear pump with deflector in fluid intake for diverting fluid towards voids in housing

Abstract

In accordance with one embodiment, the gear pump comprises a first gear meshed with a second gear as well as a housing, in which the gears are supported. The housing includes a first void, which at least partly adjoins a first side surface of the first gear, and a second void, which at least partly adjoins a second side surface of the first gear. The gear pump further comprises a fluid intake channel configured to direct fluid towards the gears, wherein at least one deflector is arranged within the fluid intake such that an incident fluid flow is diverted towards the first void as well as to the second void.

1 . An external gear pump comprising:
 a first external gear meshed with a second external gear;   a housing, in which the gears are supported, wherein the housing includes a first void, which at least partly adjoins a first side surface of the first external gear, and a second void, which at least partly adjoins a second side surface of the first external gear;   a fluid intake channel configured to direct fluid towards the gears; and   at least one deflector arranged within the fluid intake channel such that an incident fluid flow is diverted towards the first void as well as to the second void.   
     
     
         2 . The external gear pump according to  claim 1 ,
 wherein the deflector is shaped and positioned such that the incident fluid flow is split into a first portion and at least a second portion, wherein the first portion of the fluid flow is diverted towards the first void and the second portion of the fluid flow is diverted towards the second void.   
     
     
         3 . The external gear pump according to  claim 2 , further comprising a further deflector arranged such so as to guide the first portion of the fluid flow towards the first void. 
     
     
         4 . The external gear pump according to  claim 1 ,
 wherein the first void is formed by a recess formed in an inner surface of a cover of the housing.   
     
     
         5 . The external gear pump according to  claim 1 , wherein the second void is formed by a recess formed in an inner surface of the housing. 
     
     
         6 . The external gear pump according to  claim 1 , wherein the second void is formed by an indentation formed within the fluid intake channel adjacent to the second side surface of the first external gear. 
     
     
         7 . The external gear pump according to  claim 1 , wherein the first and the second voids are axially neighboring the gears on opposing sides of the gears. 
     
     
         8 . The external gear pump according to  claim 1 ,
 wherein the deflector is shaped such that the incident fluid flow is prevented from directly flowing towards circumferential surfaces of the gears in a radial direction.   
     
     
         9 . The external gear pump according to  claim 1 , further comprising a fluid outlet, wherein a duct forming the fluid intake channel is slanted with respect to a duct forming the fluid outlet. 
     
     
         10 . The external gear pump according to  claim 1 , wherein the deflector is an integral component of the housing. 
     
     
         11 . The external gear pump according to  claim 1 , wherein the deflector is a separate component mounted to an inner surface of the fluid intake channel or the housing. 
     
     
         12 . The external gear pump according to  claim 1 , wherein the fluid intake channel is arranged at least partly in an interior of the housing and/or wherein the fluid intake channel is at least partly formed by a duct externally attached to the housing.