Fluid control device

A fluid control device connected with a sample reaction unit having multiple chambers to regulate fluid operations in a multi-fluid-system, the fluid control device comprising:

• a fluid manifold comprising a main body, plural microchannels and plural fluid input channels, wherein each of the plural microchannels penetrates through the main body and is connected with a corresponding chamber of the sample reaction unit, and the plural fluid input channels are connected with plural fluid sources;
• a rotary valve comprising a valve stator and a valve rotor, wherein the valve stator is disposed at a bottom of the fluid manifold and comprising plural through holes, the valve rotor is disposed at a bottom of the valve stator and comprising at least one groove, and when the valve rotor is rotated to different positions, the fluid input channel is connected with at least one of the plural microchannels via the through holes of the valve stator and the groove of the valve rotor to provide at least one fluid path and enable fluid provided by the fluid source to be directed to the corresponding chamber of the sample reaction unit through the fluid path and thus regulate the fluid operation of the corresponding chamber;
• a first driving unit connected with and driving a rotation of the valve rotor;
• and
• a second driving unit connected with and driving a motion of at least one of the valve rotor and the valve stator to adjust a distance between the valve rotor and the valve stator, so that when the valve rotor is rotating, the valve rotor and the valve stator are separated by a gap, and after the valve rotor is rotated to a predetermined position, the valve rotor is tightly contacted the valve stator.