EP 0517250 A1 19921209 - Single-screw compressor rotor construction.
Title (en)
Single-screw compressor rotor construction.
Title (de)
Rotor für einen Verdichter mit Toroidalschraube.
Title (fr)
Construction du rotor pour compresseurs à vis globique.
Publication
Application
Priority
JP 13441491 A 19910605
Abstract (en)
A single-screw compressor has a rotor (2) with screw vanes (3) which is rotatably incorporated in a casing (1). The screw vane (3) has a confronting surface (31) which has a width in a rotating direction of the rotor (2) and which faces an inner peripheral wall (11) of the casing (1). A rib (6) narrower than the width of the confronting surface (31) is formed at one end in a widthwise direction of the confronting surface (31), extending along the spiral of the screw vane (3). Accordingly, a gap between the screw vane (3) and the inner peripheral wall of the casing (1) is made small, improving sealing properties. A rib-side lateral surface (32, 33) of the screw vane (3) is effectively utilized as a heat radiation surface, so that heat generated through contact between the rib (6) and the inner peripheral wall (11) of the casing (1) is radiated easily, thereby restricting the temperature rise of the screw vane (3) as well as the thermal expansion in the radial direction thereof. <IMAGE>
IPC 1-7
IPC 8 full level
F04C 18/16 (2006.01); F04C 18/48 (2006.01); F04C 18/52 (2006.01)
CPC (source: EP)
F04C 18/52 (2013.01)
Citation (search report)
- [X] GB 923042 A 19630410 - FERNAND ZIMMERN
- [X] US 1735477 A 19291112 - STUART KENNETH E
- [A] GB 2131877 A 19840627 - ZIMMERN BERNARD
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92109553 A 19920605; JP 13441491 A 19910605