F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
230/39
F04C 18/16 (2006.01) F01C 1/08 (2006.01)
Patent
CA 1269966
ABSTRACT OF THE DISCLOSURE Rotary machine such as rotary compressor or expander having meshed male and female rotor assembly. The tooth profile of the female rotor is formed such that a line (H2-A2) is formed by a generated curve of a point A1 of the male rotor; a line (A2-B2) is formed by a circular arc having a point O7 as the center of the arc and a radius R7; a curve (B2-C2 ) is formed by an envelope developed by a circular arc (B1-C1) of the male rotor; a portion between points D2 and E2 is formed by a circular arc having a point O1 as the center of the arc and a radius R1; a line (C2-D2) is formed by a line smoothly connecting the curves (B2-C2 ) and (D2 -E2); a curve (E2-F2) is formed by a circular arc having a point O2 as the center of the arc and a radius R2; and a curve (F2-G2) is formed by a circular arc having a point O8 as the center of the arc and a radius R8. The tooth profile of the male rotor is formed such that a curve (H1-A1) is formed by a generated curve of a point H2 of the female rotor; a curve (A1-B1) is formed by an envelope developed by the arc (A2 -32 ) of the female rotor; a curve (B1-C1) is formed by a circular arc having a point 04 as the center of the arc and a radius R4; a curve (D3-E'1) is a circular arc having a point O6 as the center of the arc and a radius R6; a curve (E?-E1) is an envelope developed by an arc (D2-E2) of the female rotor; curves (E1-F1) and (F1-G1) are generated by arcs (E2-F2) and (F2-G2) of the female rotor tooth profile, respectively, and a seal strip is formed between points C1 and D3.
512629
Kanai Junichi
Maehara Atsushi
Tanaka Masanori
Hokuetsu Industries Co. Ltd.
Smart & Biggar
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