Particulate collection device

A particulate collection device comprising:

• a housing having an air intake port, an exhaust port, and a flow channel connecting the air intake port to the exhaust port in the housing;
• a fan that generates, in the flow channel, airflow for drawing, from the air intake port into the flow channel, a gas containing a first particulate and a second particulate smaller than the first particulate, the fan being rotatable about a first axis;
• a sprayer that sprays a first liquid into a first portion included in the flow channel to coat the first particulate with liquid contained in the first liquid and coat the second particulate with liquid contained in the first liquid;
• a first filter located between the first portion and the exhaust port and supported rotatably about the first axis;
• a power source that rotates the first filter;
• a first collection port used to collect the first particulate coated with the liquid contained in the first liquid from the flow channel through a second portion included in the first filter;
• a second collection port used to collect the second particulate coated with the liquid contained in the first liquid from the flow channel through a third portion included in the first filter;
• and
• a second filter removably attached to the air intake port and preventing the first particulate and the second particulate from entering the flow channel,
• wherein the second portion is located between the first portion and the third portion, and
• wherein the sprayer sprays a second liquid to clean the first filter and the flow channel when the second filter is attached.

A particulate collection device comprising:

• a housing having an air intake port, an exhaust port, and a flow channel connecting the air intake port to the exhaust port in the housing;
• a fan that generates, in the flow channel, airflow for drawing, from the air intake port into the flow channel, a gas containing a first particulate and a second particulate smaller than the first particulate, the fan being rotatable about a first axis;
• a sprayer that sprays a first liquid into a first portion included in the flow channel to coat the first particulate with liquid contained in the first liquid and coat the second particulate with liquid contained in the first liquid;
• a first filter located between the first portion and the exhaust port and supported rotatably about the first axis;
• a power source that rotates the first filter;
• a first collection port used to collect the first particulate coated with the liquid contained in the first liquid from the flow channel through a second portion included in the first filter;
• a second collection port used to collect the second particulate coated with the liquid contained in the first liquid from the flow channel through a third portion included in the first filter;
• a controller configured to control a rotational speed of the first filter;
• and
• an inputter that receives information on respective sizes of the first particulate and the second particulate input by a user,
• wherein the controller is configured to control the rotational speed of the first filter based on the input information.