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1. (WO1992009807) FLUID JETTING TYPE SCREW COMPRESSOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009807 International Application No.: PCT/JP1991/001637
Publication Date: 11.06.1992 International Filing Date: 28.11.1991
IPC:
F04C 18/08 (2006.01) ,F04C 18/16 (2006.01) ,F04C 29/00 (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
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
29
Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups F04C18/-F04C28/193
Applicants:
KABUSHIKI KAISHA MAEKAWA SEISAKUSHO [JP/JP]; 13-1, Botan 2-chome Koutou-ku Tokyo 135, JP (JP)
KISI, Takayuki [JP/JP]; JP (UsOnly)
KASAHARA, Keisuke [JP/JP]; JP (UsOnly)
Inventors:
KISI, Takayuki; JP
KASAHARA, Keisuke; JP
Agent:
KABASAWA, Joo ; The Ando Building 3-22, Shinjuku 4-chome Shinjuku-ku Tokyo 160, JP
Priority Data:
2/130135 U30.11.1990JP
Title (EN) FLUID JETTING TYPE SCREW COMPRESSOR
(FR) COMPRESSEUR A VIS DU TYPE A JET DE FLUIDE
Abstract:
(EN) A fluid jetting type compressor provided with a casing (1) whose one end in the longitudinal direction is a suction side and the other end a discharge side, and with a pair of male rotor (2) and female one (3) meshing with each other and incorporated into said casing (1). The male rotor (2) having an outer radius of R is provided with Z-many projecting helical teeth each beveled at the corner of the face thereof opposite to the discharge side of the casing. The extent of the beveled part (6) ranges from a point P where an angle øS from the tip of projecting tooth in the positive rotating direction around a rotation center of the male tooth (1) satisfies the relation, -10° « øS « 35° to the other point Q where an angle øE satisfies the relation, øS < øE « 160°/Z, and amount Dr to be beveled in the radial direction and amount Ds in the axial direction are specified as follows: 0.007 R « Dr « (1.2/Z) R, 0.007 R « Ds « (1.2/Z) R. A sharp pressure rise of fluid owing to fluid pressurization phenomenon in a semi-contained and full-contained states during a pressurizing gas discharge process can be prevented without sacrifice in pressure efficiency.
(FR) Compresseur à vis du type à jet de fluide doté d'une structure (1) dont une extrémité dans le sens longitudinal constitue le côté d'aspiration et l'autre extrémité un côté de refoulement, et comportant un rotor mâle (2) ainsi qu'un rotor femelle (3) en prise l'un avec l'autre, et incorporés dans ladite structure (1). Le rotor mâle (2) a un rayon extérieur R, il est doté de nombreuses dents hélicoïdales saillantes au nombre de Z, chacune biseautée au niveau du coin de sa face opposée au côté de refoulement de ladite structure. Ladite partie biseautée (6) s'étend à partir d'un point P où un angle øS partant de la pointe de la dent saillante dans le sens de rotation positif autour d'un centre de rotation de la dent mâle (1) satisfait la relation -10° « øS « 35° jusqu'à l'autre point Q où un angle øE satisfait la relation øS < øE « 160°/Z, la valeur Dr à biseauter dans le sens radial ainsi que la valeur Ds dans le sens axial sont spécifiées comme suit: 0,007 R « Dr « (1,2/Z)R, 0,007 R « Ds « (1,2/Z) R. On peut empêcher une forte montée de pression du fluide due au phénomène de pressurisation du fluide dans des états semi-contenus et entièrement contenus pendant un processus de décharge de gaz de pressurisation, sans perdre de rendement de pression.
Designated States: JP, US
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)