Valve, fluidic apparatus, and fluid-supplying apparatus

A valve comprising:

• a valve body defined by a stack including a bottom plate, a plate member including a first valve chamber, a diaphragm, a plate member including a second valve chamber, and a top plate;
• a first opening provided in the valve body at a location below the diaphragm from which fluid flows in;
• a second opening provided in the valve body at a location below the diaphragm from which the fluid flows out;
• and
• a third opening provided in the valve body at a location above the diaphragm;
• wherein
• at least one of the first opening and the second opening is closed by the diaphragm;
• and
• when a force applied by the fluid through the first opening to a front surface of the diaphragm differs from a force applied by the fluid through the third opening to a back surface of the diaphragm, the diaphragm is displaced and allows the first opening and the second opening to communicate with each other.

A valve comprising:

• a valve body defined by a stack including a bottom plate, a plate member including a first valve chamber, a diaphragm, a plate member including a second valve chamber, and a top plate;
• a first opening provided in the valve body at a location below the diaphragm from which fluid flows in;
• a second opening provided in the valve body at a location below the diaphragm from which the fluid flows out;
• and
• a third opening provided in the valve body at a location below the diaphragm;
• wherein
• at least one of the first opening and the second opening is closed by the diaphragm;
• and
• when a force applied by the fluid through the first opening to a front surface of the diaphragm differs from a force applied by the fluid through the third opening to a back surface of the diaphragm, the diaphragm is displaced and allows the first opening and the second opening to communicate with each other.

A valve comprising:

• a valve body defined by a stack including a lower body including a first valve chamber, a diaphragm, and an upper body including a second valve chamber;
• a first opening provided in the valve body at a location below the diaphragm from which fluid flows in;
• a second opening provided in the valve body at a location below the diaphragm from which the fluid flows out;
• and
• a third opening provided in the valve body at a location below the diaphragm;
• wherein
• at least one of the first opening and the second opening is closed by the diaphragm;
• and
• when a force applied by the fluid through the first opening to a front surface of the diaphragm differs from a force applied by the fluid through the third opening to a back surface of the diaphragm, the diaphragm is displaced and allows the first opening and the second opening to communicate with each other.