| 摘要 |
<p>PURPOSE:To reduce the length of an oil passage and facilitate the handling of piping by screwing a plug into an oil feeding port and forming a spiral orifice. CONSTITUTION:An oil feeding port 15 provided on a fixed scroll 2 consists of a large diameter bore portion 16, a small diameter lap-portion oil feeding port 17 the end of which is opened into a compression chamber 10, and an end-plate oil feeding port 18 the end of which is opposite to the end plate 8A of a revolving scroll 8 and opened in a casing 1. In the end-plate oil feeding port 18, and orifice 21 composed of a spiral flow passage is formed between the outer peripheral face of the shaft portion 20A of a plug 20 screwed in the internal thread portion 18A and the inner peripheral face of the internal thread portion 18A, and the length of the flow passage of the orifice 21 can be extendingly/contractingly adjusted by rotating and advancing/retracting the plug 20 in the axial direction.</p> |
