Air blast sweeper with dust control system
First Claim
1. In a sweeper including an air blast pickup head supplied with pressurized air from the exhaust of a blower and a debris collecting chamber coupled between the pickup head and the blower such that debris is picked up by the air stream through the pickup head and deposited in the debris collecting chamber, a dust control system comprising:
- a source of pressurized fluid;
a first nozzle coupled to said source and positioned to provide a fine mist spray of fluid in the air flow path from said blower exhaust to said pick up head; and
a second nozzle coupled to said source and positioned to provide a fine mist spray of fluid in the air flow path from said pickup head to the inlet of said blower. 9
8 Assignments
0 Petitions
Accused Products
Abstract
A mobile sweeper includes an air blast pickup head having air intake and exhaust ports communicating with the exhaust of a blower and the input of a debris plenum, respectively, for suctioning debris from a surface being cleaned and depositing the debris in the debris plenum. In order to control the dust caused by the air movement, a source of pressurized water is injected in the form of minute droplets into the air stream in advance of the pickup head air intake and in advance of the debris plenum input.
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Citations
16 Claims
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1. In a sweeper including an air blast pickup head supplied with pressurized air from the exhaust of a blower and a debris collecting chamber coupled between the pickup head and the blower such that debris is picked up by the air stream through the pickup head and deposited in the debris collecting chamber, a dust control system comprising:
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a source of pressurized fluid; a first nozzle coupled to said source and positioned to provide a fine mist spray of fluid in the air flow path from said blower exhaust to said pick up head; and a second nozzle coupled to said source and positioned to provide a fine mist spray of fluid in the air flow path from said pickup head to the inlet of said blower. 9 - View Dependent Claims (2, 3, 4, 15, 16)
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5. In a sweeper including an air blast pickup head supplied with pressurized air from the exhaust of a blower and a debris collecting chamber coupled between the pickup head and the blower such that debris is picked up by the air stream through the pickup head and deposited in the debris collecting chamber, a dust control system comprising:
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a source of water; first means coupled to said source of water and positioned between said blower exhaust and said pickup head to provide a fine mist spray of water into the air flow path leading into said pickup head; second means coupled to said source of water and positioned between said pickup head and said debris collecting chamber to provide a fine mist spray of water into the air flow path leading from said pickup head; and means coupled between said source of water and said first and second means for pressurizing water supplied to said first and second means. - View Dependent Claims (6, 7, 8, 9)
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10. An air blast-type sweeper comprising:
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an air blast pickup head including intake and outlet ports; blower means including an exhaust outlet coupled to said intake port of said pickup head and an inlet; a debris collection chamber having an input coupled to said outlet port of said pickup head and an outlet coupled to said inlet of said blower; and means for supplying a fine mist spray of wetting agent to the air flow path between said blower and said pickup head and to the air flow path between said pickup head and said debris plenum. - View Dependent Claims (11, 12, 13, 14)
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Specification