JPH0419683U

JPH0419683U -

Info

Publication number: JPH0419683U
Application number: JP6070290U
Authority: JP
Priority date: 1990-06-11
Filing date: 1990-06-11
Publication date: 1992-02-19

Description

[Brief explanation of the drawing]

第１，２，３，５図は本案に係わる非接触回転
機械の図、第４図は第３図の側面図、第６図は漏
洩の経路を示す図、第７図は羽根側板の円周面に
ラビリンス溝を形成した図、第１２，１６，１７
，１８図は本案を理解する為に描いた補助図、第
８，９，１０，１１，１３，１４，１５図は本案
による非接触回転機械の漏洩防止構造の図であり
、いずれも羽根側板の囲りを描いた部分図である
。１，１′は羽根、２，２′は羽根外周面、３，
３′は羽根内周面、４，４′は羽根側板、５，５
′は固定中空体、６，６′は連絡口、７，７′は
回転中空体、８，８′は開閉口、９，９′は作動
室、１０は通路、１１，１１′は欠円部、１２は
陥没部、１３は逃し通路、１４，１５，１５′，
１６，１７，１８，１９，２０，２１はラビリン
ス溝、Ｐは羽根側板の円周面と下段側のローター
の外周面との交わり部、Ｃ_１，Ｃ_２，Ｃ_３，Ｃ_４，Ｃ′_１，Ｃ′_２，Ｃ′_３，Ｃ′_４，ｌ_１，ｌ_２，ｌ_３，ｌ_４，ｌ_５は線である。 Figures 1, 2, 3, and 5 are diagrams of the non-contact rotating machine according to the present invention, Figure 4 is a side view of Figure 3, Figure 6 is a diagram showing the leakage route, and Figure 7 is the circle of the blade side plate. Diagram showing labyrinth grooves formed on the circumferential surface, 12th, 16th, 17th
, Figure 18 is an auxiliary diagram drawn to help understand the main idea, and Figures 8, 9, 10, 11, 13, 14, and 15 are diagrams of the leakage prevention structure of the non-contact rotating machine according to the idea, and all of them are of the blade side plate. It is a partial diagram depicting the enclosure. 1, 1' are blades, 2, 2' are blade outer peripheral surfaces, 3,
3' is the inner peripheral surface of the blade, 4, 4' are the blade side plates, 5, 5
' is a fixed hollow body, 6, 6' are communication ports, 7, 7' are rotating hollow bodies, 8, 8' are opening/closing ports, 9, 9' are working chambers, 10 is a passage, 11, 11' are missing circles part, 12 is a depressed part, 13 is a relief passage, 14, 15, 15',
16, 17, 18, 19, 20, 21 are labyrinth grooves, P is the intersection of the circumferential surface of the blade side plate and the outer circumferential surface of the lower rotor, C ₁ , C ₂ , C ₃ , C ₄ , C' ₁ , C' ₂ , C' ₃ , C' ₄ , l ₁ , l ₂ , l ₃ , l ₄ , l ₅ are lines.

Claims

[Claims for Utility Model Registration] (1) A fixed hollow body in which at least one of a pair of rotors that synchronously rotates in opposite directions without contacting each other is fixed to the outside of the rotating hollow body. has a blade that rotates integrally with the rotating hollow body while being in close contact with the outer peripheral surface of the casing, and is configured such that the blade outer peripheral surface of the blade is in close contact with the inner peripheral surface of the casing, and the working chamber is in its minimum volume state. In a non-contact rotating machine configured to communicate with the rotating hollow body through a communication port formed in the fixed hollow body and an opening/closing port formed in the rotating hollow body during the period of communicating with the intermediate volume state. , on the circumferential surface of the blade side plate integrated with the blade, in the axial direction at a predetermined portion between the part corresponding to the extension of the high-pressure side blade side of the blade and the part corresponding to the extension of the low-pressure side blade side. A non-contact rotary machine, characterized in that a labyrinth groove group consisting of a plurality of labyrinth grooves directed toward the blade side plate is formed, and at least an annular portion close to the circumferential surface of the rear end surface of the blade side plate is configured to be in close contact with a wall surface. Leak-proof structure. (2) At least one of the pair of rotors, which rotate in opposite directions synchronously without contacting each other, is in close contact with the outer peripheral surface of a fixed hollow body fixed to the outside of the rotating hollow body. A period in which the working chamber has a blade that rotates integrally with the rotating hollow body, and is configured such that the outer peripheral surface of the blade is in close contact with the inner peripheral surface of the casing, and the working chamber communicates its minimum volume state with an intermediate volume state. , in a non-contact rotating machine configured to communicate into the rotating hollow body through a communication port formed in the fixed hollow body and an opening/closing port formed in the rotating hollow body, On the circumferential surface of the blade side plate, each labyrinth groove forms a labyrinth groove group consisting of a plurality of labyrinth grooves extending in the axial direction for a certain section from the part corresponding to the extension of the low-pressure side blade side surface of the blade toward the low-pressure side. A non-contact rotating machine characterized in that the blade side plate is formed so that there is no opening on the blade side end face, and the annular portion of the rear side end face of the blade side plate is configured such that at least an annular portion close to the circumferential surface is in close contact with the wall surface. Leak-proof structure. (3) Scope of Utility Model Registration Claims 1 or 2, in which a plurality of labyrinth grooves extending in the axial direction are formed at predetermined positions on the high-pressure side of the group of labyrinth grooves on the circumferential surface of the blade side plate. Leakage prevention structure for non-contact rotating machinery as described in .