Internal gear fluid machine with connection channel in each of two housing walls

An internal gear fluid machine comprising:

• a first gearwheel having an external toothing and mounted rotatably about a first axis of rotation, and a second gearwheel having an internal toothing meshing in regions with the external toothing in an engagement region and mounted rotatably about a second axis of rotation different from the first axis of rotation;
• a filler piece arranged between the first gearwheel and the second gearwheel away from the engagement region, the filler piece bearing on a first side against the external toothing and bearing on a second side against the internal toothing in order to divide a fluid space present between the first gearwheel and the second gearwheel into a first fluid chamber and a second fluid chamber;
• a connection channel formed in each of two housing walls of a machine housing of the internal gear fluid machine, the housing walls arranged in an axial direction with respect to the first axis of rotation on both sides of the first gearwheel and the second gearwheel;
• and
• at least one sealing disc arranged in the axial direction with respect to the first axis of rotation next to the first gearwheel and the second gearwheel, which, during operation of the internal gear fluid machine, bears in a sealing manner against the first gearwheel and the second gearwheel, an axial opening being formed in the sealing disc, via which one of the fluid chamber is in flow communication with one of the fluid connections of the internal gear fluid machine,
• wherein at least one of the first and second fluid chambers are in flow connection with the internal gear fluid machine via both of the connection channels,
• wherein the filler piece is tapered in the axial direction in overlapping with the axial opening.