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1. (WO2019027844) IMPROVED INLET PORT CONFIGURATION FOR ROOTS-TYPE SUPERCHARGER
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Pub. No.: WO/2019/027844 International Application No.: PCT/US2018/044231
Publication Date: 07.02.2019 International Filing Date: 27.07.2018
IPC:
F04C 18/18 (2006.01) ,F01C 1/16 (2006.01) ,F02B 33/38 (2006.01) ,F04C 18/02 (2006.01) ,F04C 18/16 (2006.01) ,F04C 27/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18
Rotary-piston pumps specially adapted for elastic fluids
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12
of other than internal-axis type
14
with toothed rotary pistons
18
with similar tooth forms
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
1
Rotary-piston machines or engines
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12
of other than internal-axis type
14
with toothed rotary pistons
16
with helical teeth, e.g. chevron-shaped, screw type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
33
Engines characterised by provision of pumps for charging or scavenging
32
Engines with pumps other than of reciprocating-piston type
34
with rotary pumps
36
of positive-displacement type
38
of Roots type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18
Rotary-piston pumps specially adapted for elastic fluids
02
of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
18
Rotary-piston pumps specially adapted for elastic fluids
08
of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12
of other than internal-axis type
14
with toothed rotary pistons
16
with helical teeth, e.g. chevron-shaped, screw type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
C
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
27
Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Applicants:
MAGNUSON PRODUCTS, LLC [US/US]; 1990A Knoll Drive Ventura, California 93003, US
Inventors:
PETERSON, Owen; US
THOMAS, Jonathan; US
Agent:
LAZAROFF, Joseph; US
Priority Data:
62/539,00431.07.2017US
Title (EN) IMPROVED INLET PORT CONFIGURATION FOR ROOTS-TYPE SUPERCHARGER
(FR) CONFIGURATION DE PORT D'ENTRÉE AMÉLIORÉE POUR COMPRESSEUR ROOTS
Abstract:
(EN) A supercharger having twisted meshing rotors sealingly contained within a housing having an inlet port to admit air into the meshing rotors and an outlet port to expel air from the meshing rotors, the rotors having mesh points where the rotors contact one another and spaces between their mesh points to accept air from the inlet port and propel it to the outlet port as the rotors are rotated and the mesh points travel axially, the housing, inlet and rotors defining an angle known as the seal transfer angle which is greater than or equal to zero degrees when the inlet port is closed and the volume of air between rotors is sealed and has no leakage path. In the described supercharger the housing, rotors and inlet port are configured to have a negative seal transfer angle of, e.g., -10 to -40 degrees or more, up to the maximum available, and to provide a leakage path for an angular portion of the rotors' rotation, improving high end performance without degrading low end performance
(FR) On décrit un compresseur volumétrique qui comprend des rotors engrenés torsadés logés de manière hermétique dans un boîtier comportant un orifice d'entrée pour l'admission de l'air dans les rotors engrenés, et un orifice de sortie pour l'évacuation de l'air des rotors engrenés. Les rotors présentent: des points de maillage où les rotors viennent au contact les uns des autres, et des espaces entre les points de maillage pour recevoir l'air par l'orifice d'entrée et le propulser vers l'orifice de sortie pendant la rotation des rotors et le déplacement axial des points de maillage. Le boîtier, l'orifice d'entrée et les rotors définissent un angle connu comme angle de transfert d'étanchéité et qui est supérieur ou égal à zéro degré lorsque l'orifice d'entrée est fermé et que le volume d'air entre les rotors est confiné et n'a aucun trajet de fuite. Dans le compresseur volumétrique de l'invention, le boîtier, les rotors et l'orifice d'entrée sont configurés de manière à présenter un angle de transfert d'étanchéité négatif, par exemple d'au moins -10 à -40 degrés, jusqu'au maximum disponible, et à créer un trajet de fuite pour une partie angulaire de la rotation des rotors, ce qui améliore les hautes performances sans dégrader les basses performances.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)