Ultrafine bubble-containing liquid producing apparatus and ultrafine bubble-containing liquid producing method

An ultrafine bubble-containing liquid producing apparatus comprising:

• a dissolving unit that dissolves a predetermined gas into a liquid;
• an ultrafine bubble generating unit that generates ultrafine bubbles in the liquid in which the predetermined gas is dissolved;
• a circulation controlling unit that controls circulation of a liquid through liquid circulation routes including the dissolving unit and the ultrafine bubble generating unit;
• a first storing chamber and a second storing chamber for storing a liquid;
• and
• a unit that supplies a liquid from the first storing chamber to the second storing chamber,
• wherein the circulation controlling unit circulates a liquid under a first condition that defines a state of the liquid to be circulated, through a circulation route passing through the dissolving unit in a case of causing the dissolving unit to operate in the circulation route,
• wherein the circulation controlling unit circulates a liquid under a second condition different from the first condition through a circulation route passing through the ultrafine bubble generating unit in a case of causing the ultrafine bubble generating unit to operate in the circulation route,
• wherein the circulation controlling unit circulates a liquid under the first condition through a first circulation route starting from the first storing chamber, passing through the dissolving unit, and returning to the first storing chamber without passing through the ultrafine bubble generating unit, in a case of causing the dissolving unit to operate in the first circulation route, and
• wherein the circulation controlling unit circulates a liquid under the second condition through a second circulation route starting from the second storing chamber, passing through the ultrafine bubble generating unit, and returning to the second storing chamber without passing through the dissolving unit, in a case of causing the ultrafine bubble generating unit to operate in the second circulation route.

An ultrafine bubble-containing liquid producing apparatus comprising:

• a dissolving unit that dissolves a predetermined gas into a liquid;
• an ultrafine bubble generating unit that generates ultrafine bubbles in the liquid in which the predetermined gas is dissolved;
• a circulation controlling unit that controls circulation of a liquid through liquid circulation routes including the dissolving unit and the ultrafine bubble generating unit;
• and
• at least one of:
• a first supplying unit that supplies a liquid to the ultrafine bubble generating unit from a first storing chamber for storing a liquid through a second storing chamber for storing a liquid;
• and
• a second supplying unit that supplies a liquid to the first storing chamber from the ultrafine bubble generating unit through a third storing chamber for storing a liquid,
• wherein the circulation controlling unit circulates a liquid under a first condition that defines a state of the liquid to be circulated, through a circulation route passing through the dissolving unit in a case of causing the dissolving unit to operate in the circulation route, and
• wherein the circulation controlling unit circulates a liquid under a second condition different from the first condition through a circulation route passing through the ultrafine bubble generating unit in a case of causing the ultrafine bubble generating unit to operate in the circulation route,
• wherein the circulation controlling unit circulates a liquid under the first condition through a first circulation route starting from the first storing chamber, passing through the dissolving unit, and returning to the first storing chamber without passing through the ultrafine bubble generating unit, in a case of causing the dissolving unit to operate in the first circulation route, and
• wherein the circulation controlling unit circulates a liquid under the second condition through a second circulation route starting from the first storing chamber, passing through the ultrafine bubble generating unit, and returning to the first storing chamber without passing through the dissolving unit, in a case of causing the ultrafine bubble generating unit to operate in the second circulation route.