Fluid rotary machine with an encoder module

A fluid rotary machine comprising:

• a first movement chain comprising a motor with a motor shaft rotationally coupled to a valve element and a motor control unit configured to control rotational movement of the motor shaft, wherein, dependent on the rotational movement of the motor shaft, the valve element is configured to control a fluid flow to a gear wheel of a second movement chain,
• the second movement chain comprising the gear wheel, a cardan shaft and an output shaft, wherein the cardan shaft is rotationally coupled to the gear wheel and the output shaft, wherein the gear wheel, the cardan shaft and the output shaft are rotatable relative to the motor shaft, wherein the gear wheel is rotatable by said fluid flow and rotational movement of the gear wheel is transferred to the output shaft by the cardan shaft, and
• an encoder module comprising a sensor arrangement configured to detect rotational movement of a component of the second movement chain,
• wherein the gear wheel comprises a first side directed towards the output shaft and a second side opposite to said first side, wherein the second side is directed towards the motor, and wherein the encoder module is at least partially arranged on the second side of the gear wheel.

A fluid rotary machine comprising:

• a first movement chain comprising a motor with a motor shaft rotationally coupled to a valve element and a motor control unit configured to control rotational movement of the motor shaft, wherein, dependent on the rotational movement of the motor shaft, the valve element is configured to control a fluid flow to a gear wheel of a second movement chain,
• the second movement chain comprising the gear wheel, a cardan shaft and an output shaft, wherein the cardan shaft is rotationally coupled to the gear wheel and the output shaft, wherein the gear wheel, the cardan shaft and the output shaft are rotatable relative to the motor shaft, wherein the gear wheel is rotatable by said fluid flow and rotational movement of the gear wheel is transferred to the output shaft by the cardan shaft, and
• an encoder module comprising a sensor arrangement configured to detect rotational movement of a component of the second movement chain,
• wherein the motor shaft comprises a motor shaft channel, wherein the valve element comprises a valve element channel, wherein a transfer element is at least arranged inside said motor shaft channel, and wherein the transfer element passes through the valve element channel.