Dust collection device
AssigneeU.S. URASAKI Co., Ltd.
InventorMorihiro URASAKI
Life of this patent
Estimating the term…
Abstract
A dust collection device (1) for removing fine particles from an atmosphere is provided with a filter (3), a blower (11), a dust removal device (7), and a pressure introduction device (9). The filter (3) removes fine particles from an atmosphere drawn into a filter chamber (5A). The blower (11) draws the atmosphere into the filter chamber (5A) and generates an air flow through the filter (3). The dust removal device (7) removes fine particles adhering to the filter (3). The pressure introduction device operates during operation of the dust removal device (7) and introduces an atmospheric pressure higher than the atmospheric pressure inside an air passage to the air passage downstream from the filter (3).
Claims6
1-7. (canceled)
A fouling removal device that removes fouling adhering to a surface of an object to be cleaned, the fouling removal device comprising:
- an accumulator unit to be filled with a pressurized gas;
- and
- an accelerator having an injection port for blowing the gas toward the object to be cleaned, the accelerator comprising a narrowed portion that narrows an air flow released from the accumulator unit, an expansion portion that expands the air flow ejected from a throat portion of the narrowed portion, the throat portion having a most reduced flow passage cross sectional area, and a valve portion that opens and closes the throat portion.
A dust collection device for removing dust in an atmosphere, the duct collection device comprising:
- a filter that removes dust from the atmosphere drawn;
- and
- a fouling removal device that removes fouling containing a dust adhering to a surface of the filter, the fouling removal device comprising:
- an accumulator unit to be filled with a pressurized gas;
- and
- an accelerator having an injection port for blowing the gas toward the filter, the accelerator comprising a narrowed portion that narrows an air flow released from the accumulator unit, an expansion portion that expands the air flow ejected from a throat portion of the narrowed portion in which a flow passage cross sectional area is most reduced, and a valve portion that opens and closes the throat portion.
A fouling removal process for removing fouling adhering to a surface of an object to be cleaned, comprising:
- accelerating an air flow to a sonic speed or more, or to a subsonic speed, and injecting the accelerated air flow toward the object to be cleaned.
Dependencies are inferred from the claim text.