Two-stage separator apparatus for yard debris
First Claim
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1. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
- a. a curvilinear primary-separation duct having an outer wall, an interior wall, an entrance for accepting a stream of air bearing entrained yard debris and an exit;
said curvilinear primary-separation duct being adapted for conducting said stream of air bearing entrained yard debris from said entrance to said exit;
b. a vessel having a roof, a bottom, and a generally frusto-conical outer peripheral wall section flaring downwardly and outwardly and an opening thereinto, a portion of said outer wall of said curvilinear primary-separation duct adjacent to said exit being generally tangential to a portion of said generally frusto-conical outer peripheral wall section of said vessel in a first location adjacent to said opening, a portion of said interior wall of said curvilinear primary-separation duct adjacent to said duct exit defining an acute angle with another portion of said generally frusto-conical outer peripheral wall section at a second location generally opposed to said first location adjacent to said opening;
c. a secondary-separation zone in said vessel being defined proximate said opening into said vessel and being adapted to receive said stream of air bearing entrained yard debris from said exit of said curvilinear primary-separation duct;
d. said secondary-separation zone in said vessel being at least partially wrapped by said curvilinear primary-separation duct, the curvature and arc length of said curvilinear primary-separation duct being sufficient to separate said stream of air bearing entrained yard debris into an inwardly located debris-depleted stream and an outwardly located debris-enriched stream;
e. said generally frusto-conical outer peripheral wall section of said vessel being adapted to further enrich the debris content of said outwardly located debris-enriched stream while further depleting the debris content of said inwardly located debris-depleted stream by action of body forces upon the debris as said streams of air bearing entrained yard debris pass tangentially thereto;
f. an accumulator located below said secondary-separation zone for receiving debris from said outwardly located debris-enriched stream; and
g. said roof of said vessel having defined therein a generally centrally located passage adapted to exhaust air from said inwardly located debris-depleted stream to the atmosphere.
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Accused Products
Abstract
An apparatus for collection and reduction of yard debris combining a frontally facing vacuum pick up with a chipper-shredder-blower unit to induce airflow for entraining debris collected at the vacuum pick up; reduce the entrained debris to a more manageable volume; impel the reduced debris to a two-stage free-flow-separator device for removing the debris from the air in which it is entrained; and deposit the debris in a detachable accumulator for subsequent dumping.
100 Citations
73 Claims
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1. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
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a. a curvilinear primary-separation duct having an outer wall, an interior wall, an entrance for accepting a stream of air bearing entrained yard debris and an exit;
said curvilinear primary-separation duct being adapted for conducting said stream of air bearing entrained yard debris from said entrance to said exit;b. a vessel having a roof, a bottom, and a generally frusto-conical outer peripheral wall section flaring downwardly and outwardly and an opening thereinto, a portion of said outer wall of said curvilinear primary-separation duct adjacent to said exit being generally tangential to a portion of said generally frusto-conical outer peripheral wall section of said vessel in a first location adjacent to said opening, a portion of said interior wall of said curvilinear primary-separation duct adjacent to said duct exit defining an acute angle with another portion of said generally frusto-conical outer peripheral wall section at a second location generally opposed to said first location adjacent to said opening; c. a secondary-separation zone in said vessel being defined proximate said opening into said vessel and being adapted to receive said stream of air bearing entrained yard debris from said exit of said curvilinear primary-separation duct; d. said secondary-separation zone in said vessel being at least partially wrapped by said curvilinear primary-separation duct, the curvature and arc length of said curvilinear primary-separation duct being sufficient to separate said stream of air bearing entrained yard debris into an inwardly located debris-depleted stream and an outwardly located debris-enriched stream; e. said generally frusto-conical outer peripheral wall section of said vessel being adapted to further enrich the debris content of said outwardly located debris-enriched stream while further depleting the debris content of said inwardly located debris-depleted stream by action of body forces upon the debris as said streams of air bearing entrained yard debris pass tangentially thereto; f. an accumulator located below said secondary-separation zone for receiving debris from said outwardly located debris-enriched stream; and g. said roof of said vessel having defined therein a generally centrally located passage adapted to exhaust air from said inwardly located debris-depleted stream to the atmosphere. - View Dependent Claims (2, 3, 4, 5)
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6. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
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a. means for delivering a stream of air bearing entrained yard debris; b. a vessel having i. an outer vessel wall having at least one inwardly curving portion flaring downwardly and outwardly, ii. means defining an opening through said outer vessel wall, and iii. a roof, iv. a separation zone being defined in an upper portion of said vessel; c. a curvilinear duct having an outer duct wall, an interior duct wall, a duct entrance and a duct exit;
said curvilinear duct being disposed about an upper portion of said vessel;d. a portion of said outer duct wall adjacent said duct exit being generally tangential to said inwardly curving portion of said outer vessel wall in a first location adjacent to said opening, another portion of said interior duct wall adjacent to said duct exit defining an acute angle with another portion of said outer vessel wall at a second location generally opposed to said first location adjacent said opening; e. said duct entrance being adapted to receive said stream of air bearing entrained yard debris, said duct being adapted for conducting said stream of air bearing entrained yard debris from said duct entrance to said duct exit, and to direct said stream of air bearing entrained yard debris into said vessel primarily tangentially along said inwardly curving portion of said outer vessel wall, the curvature and arc length of said curvilinear duct being sufficient to separate said stream of air bearing entrained yard debris into a debris-enriched outer stream and a debris-depleted inner stream; f. said separation zone being adapted to further enrich the debris content of said debris-enriched outer stream into a further enriched outerly located debris-enriched stream while further depleting the debris content of said debris-depleted inner stream into a further depleted innerly located debris-depleted stream as said stream of air passes along said inwardly curving portion of said outer vessel wall; g. said roof having defined therein a generally centrally located passage with a passage entrance and a passage exit; h. said generally centrally located passage being adapted for receiving said further depleted innerly located debris-depleted stream from said separation zone through said passage entrance, and discharging air from said further depleted innerly located debris-depleted stream into the atmosphere; and i. an accumulator below said separation zone being adapted to receive debris from said further enriched outerly located debris-enriched stream of air bearing entrained yard debris. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon, comprising:
- a curvilinear separation duct for accepting a flow of air bearing entrained yard debris;
said apparatus having a perimetral wall with a generally inwardly curvilinear surface defining a separation zone;
said curvilinear separation duct opening into said separation zone adjacent to said generally inwardly curvilinear surface of said perimetral wall, said duct and said perimetral wall being disposed to direct said flow of air bearing entrained yard debris swirling downward along said generally inwardly curvilinear surface of said perimetral wall, said curvilinear separation duct being configured to separate debris from said flow of air bearing entrained yard debris thereby forming a debris-enriched outer layer and a debris-depleted inner layer wherein each layer flows into said separation zone, said generally inwardly curvilinear surface being disposed to further enrich the debris content of said debris-enriched outer layer while further depleting the debris content of said debris-depleted inner layer;
an accumulator below said separation zone adapted to receive debris from said debris-enriched outer layer;
a generally centrally located exhaust opening out of said separation zone adapted to discharge air from said debris-depleted inner layer into the atmosphere. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
- a curvilinear separation duct for accepting a flow of air bearing entrained yard debris;
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47. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
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a. means for delivering a stream of air bearing entrained yard debris; b. a vessel having i. an outer vessel wall having at least one inwardly curving portion, ii. means defining an opening through said outer vessel wall, and iii. a roof, iv. a separation zone being defined in an upper portion of said vessel; c. a curvilinear separation duct having an outer duct wall, an interior duct wall, a duct entrance and a duct exit;
said curvilinear duct being disposed about an upper portion of said vessel;d. a portion of said outer duct wall adjacent said duct exit being generally tangential to said inwardly curving portion of said outer vessel wall at a first location adjacent to said opening, another portion of said interior duct wall adjacent to said duct exit being generally tangential to another portion of said outer vessel wall at a second location generally opposed to said first location adjacent said opening; e. said duct entrance being adapted to receive said stream of air bearing entrained yard debris, said duct being adapted for conducting said stream of air bearing entrained yard debris from said duct entrance to said duct exit, and to direct said stream of air bearing entrained yard debris into said vessel primarily tangentially along said inwardly curving portion of said outer vessel wall; f. said separation zone being adapted to direct air flow swirling downward while inertial forces urge the debris content outwardly forming an outerly located debris-enriched stream and an innerly located debris-depleted stream as said stream of air passes along said inwardly curving portion of said outer vessel wall; g. said roof having defined therein a generally centrally located exhaust; h. said generally centrally located exhaust being adapted for receiving said innerly located debris-depleted stream from said separation zone through said passage entrance, and discharging air from said innerly located debris-depleted stream into the atmosphere; and i. an accumulator below said separation zone being adapted to receive debris from said outerly located debris-enriched stream of air bearing entrained yard debris. - View Dependent Claims (48, 49)
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50. An apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
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a. a curvilinear primary-separation duct for accepting a stream of air bearing entrained yard debris, said duct having an outer wall, an interior wall, a duct entrance and a duct exit, said curvilinear primary-separation duct being adapted for conducting said stream of air bearing entrained yard debris from said entrance to said exit; b. a roof and an inwardly curving outer peripheral wall defining a secondary-separation zone having an opening thereinto, a portion of said outer wall of said curvilinear primary-separation duct adjacent to said duct exit being generally tangential to a portion of said inwardly curving outer peripheral wall of said secondary-separation zone in one location adjacent said opening, another portion of said interior wall of said curvilinear primary-separation duct adjacent to said duct exit defining an acute angle with another portion of said inwardly curving outer peripheral wall at a location generally opposed to said one location adjacent to said opening; c. said secondary-separation zone and said curvilinear primary-separation duct being adapted to direct said stream of air bearing entrained yard debris from said duct exit of said curvilinear primary-separation duct to flow downwardly around said inwardly curving outer peripheral wall; d. said secondary-separation zone being at least partially encompassed by said curvilinear primary-separation duct, the curvature and arc length of said curvilinear primary-separation duct being sufficient to enrich the debris content of an outerly located layer of the flow through said curvilinear primary-separation duct while depleting the debris content of an innerly located layer of said flow through said curvilinear primary-separation duct; e. said secondary-separation zone being configured to further enrich the debris content of said outerly located layer of said stream of air entering said secondary-separation zone while further depleting the debris content of said innerly located layer of said stream of air entering said secondary-separation zone, as said stream of air bearing entrained yard debris passes tangentially downward along said inwardly curving outer peripheral wall; and f. an accumulator located below said separation zone for receiving debris from said outerly located debris-enriched layer; g. said roof of said secondary-separation zone having defined therein a generally centrally located passage adapted to exhaust air from said innerly located debris-depleted layer to the atmosphere. - View Dependent Claims (51, 52, 53, 54, 55, 56)
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57. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
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a. means for delivering a stream of air bearing entrained yard debris; b. means defining a primary-separation duct having an entrance and an exit, said entrance being adapted to receive said stream of air bearing entrained yard debris, said primary-separation duct being adapted for conducting said stream of air bearing entrained yard debris from said entrance to said exit;
said primary-separation duct having a generally curvilinear outer surface spanning an arc of at least about
arc cosine RI/RO
circumferentially along its length, adapted to direct said stream of air bearing entrained yard debris to flow along its length and initiate separation of said stream of air bearing entrained yard debris into an outerly located debris-enriched stream and an innerly located debris-depleted stream, whereinRI=radius of curvature for the generally curvilinear inner surface of said primary-separation duct, and RO=radius of curvature for said generally curvilinear outer surface; c. means defining a secondary-separation zone connected to said exit from said primary-separation duct and having a peripheral wall with a generally annular outer wall portion, said secondary-separation zone further comprising means for; i. receiving and directing said streams of air bearing entrained yard debris from said primary-separation duct in a downwardly swirling direction generally tangential to said generally annular outer wall portion of said secondary-separation zone, ii. directing said outerly located debris-enriched stream from said primary-separation duct adjacent to said generally annular outer wall portion of said secondary-separation zone, iii. directing said innerly located debris-depleted stream from said primary-separation duct radially inward of said debris-enriched stream, and iv. further enriching the debris content of said outerly located debris-enriched stream while further depleting the debris content of said innerly located debris-depleted stream; d. means defining a generally centrally located exhaust, said generally centrally located exhaust being adapted for exhausting air from said debris-depleted stream from said secondary-separation zone into the atmosphere; and e. means defining an accumulation zone below said secondary-separation zone being adapted to receive debris from said debris-enriched stream. - View Dependent Claims (58, 59, 60, 61)
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62. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
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a. means for delivering a stream of air bearing entrained yard debris; b. means defining a primary-separation duct having an entrance and an exit, said entrance being adapted to receive said stream of air bearing entrained yard debris, said primary-separation duct being adapted for conducting said stream of air bearing entrained yard debris from said entrance to said exit;
said primary-separation duct having a generally curvilinear outer surface spanning an arc of at least about
arc cosine RI/RO
circumferentially along its length, adapted to direct said stream of air bearing entrained yard debris to flow along its length and initiate separation of said stream of air bearing entrained yard debris into an outerly located debris-enriched stream and an innerly located debris-depleted stream, whereinRI=radius of curvature for the generally curvilinear inner surface of said primary-separation duct, and RO=radius of curvature for said generally curvilinear outer surface; c. a vessel defining a secondary-separation zone connected to said exit from said primary-separation duct and having an inwardly curving outer wall, said vessel defining said secondary-separation zone further comprising means for; i. receiving and directing said streams of air bearing entrained yard debris from said primary-separation duct in a downwardly swirling direction generally tangential to said inwardly curving outer wall of said secondary-separation zone, ii. directing said outerly located debris-enriched stream from said primary-separation duct adjacent to said inwardly curving outer wall of said secondary-separation zone, iii. directing said innerly located debris-depleted stream from said primary-separation duct radially inward of said debris-enriched stream, and iv. further enriching the debris content of said outerly located debris-enriched stream while further depleting the debris content of said innerly located debris depleted stream; d. means defining a generally centrally located exhaust, said generally centrally located exhaust being adapted for receiving air from said debris-depleted stream from said secondary-separation zone and discharging it into the atmosphere; and e. means defining an accumulation zone below said secondary-separation zone being adapted to receive debris from said debris-enriched stream. - View Dependent Claims (63, 64, 65, 66)
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67. A free-flow apparatus for separating entrained yard debris from a transporting air stream by action of body forces thereupon comprising:
- means for delivering a stream of air bearing entrained yard debris;
means defining a primary-separation zone adapted to receive said stream of air bearing entrained yard debris, said primary-separation zone having a generally curvilinear outer surface adapted to direct said stream of air bearing entrained yard debris generally circumferentially along said generally curvilinear outer surface and initiate separation of said stream of air bearing entrained yard debris into an outerly located debris-enriched stream and an innerly located debris-depleted stream;
a vessel defining a secondary-separation zone connected to said primary-separation zone, said secondary-separation zone being defined by a generally inwardly curvilinear outer wall thereof, said apparatus further comprising means for;
receiving and directing said streams of air bearing entrained yard debris from said primary-separation zone swirling downwardly around the generally inwardly curvilinear outer wall of said secondary-separation zone, while directing said outerly located debris-enriched stream from said primary-separation zone adjacent to said generally inwardly curvilinear outer wall of said secondary-separation zone, and directing said innerly located debris-depleted stream from said primary-separation zone radially inward of said debris-enriched stream, and further enriching the debris content of said outerly located debris-enriched stream while further depleting the debris content of said innerly located debris depleted stream;
means defining a generally centrally located exhaust, said generally centrally located exhaust being adapted for receiving air from said debris-depleted stream from said secondary-separation zone and discharging it into the atmosphere; and
means defining an accumulation zone below said secondary-separation zone being adapted to receive debris from said debris-enriched stream. - View Dependent Claims (68, 69, 70, 71, 72, 73)
- means for delivering a stream of air bearing entrained yard debris;
Specification