| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Aerodynamic drag reduction arrangement for use with high speed rotating elements | US324583 | 1994-10-18 | US5637942A | 1997-06-10 | Ronald J. Forni |
| An aerodynamic drag reduction arrangement for use in a mechanical device that incorporates a high speed rotating element includes a boundary layer control member that defines a control surface. The control member is positioned adjacent the rotating element so as to optimize the clearance therebetween in order to effectively block axial flow and prevent radial pumping in order to minimize power consumption. The aerodynamic drag reduction arrangement is particularly adapted for use in electric rotors and scroll fluid devices. | ||||||
| 42 | Rotary screw machine having thrust balancing means | US890600 | 1992-07-07 | US5281115A | 1994-01-25 | Karlis Timuska |
| The invention relates to a rotary screw machine in which the shaft journals (20, 22) of the rotors (10) are journalled in a main thrust bearing (24) and a thrust balancing bearing (26). The thrust balancing bearing (26) is preloaded by springs (36) and by fluid pressure means (40, 44). According to the invention the fluid pressure means (40, 44) can excert a force on the thrust balancing bearing (26) in either axial direction. This increases the possibility for an optimal distribution of the forces on the thrust bearings (24, 26) at various running conditions. | ||||||
| 43 | Rotary engine | US814615 | 1991-12-30 | US5181489A | 1993-01-26 | Yoshihiro Bando |
| A rotary engine that comprises a rotor having two side faces, a side housing disposed facing to one of the two side faces of the rotor and a center housing disposed facing to the other of the two side faces of the rotor. The side housing has an intake port formed therein. Also, the center housing has an intake port formed therein. The intake port of the center housing has an opening end which is dislocated from an opening end of the intake port formed in the side housing facing thereto to a retard side. A space is formed between the side face of the rotor and the center housing. And a relief hole is provided in the center housing in a dislocated portion of the opening end of the intake port of the center housing so as to escape a blow-bye gas pressure from the space. | ||||||
| 44 | Scroll type fluid machinery having a tilt regulating member | US713057 | 1991-06-10 | US5145346A | 1992-09-08 | Takayuki Iio; Ryuhei Tanigaki |
| A scroll type fluid machinery provided with a slide type radius of revolution variable mechanism prevents unilateral working of a rotating bearing 23 due to tilted rotation of a drive bushing 21 and a balance weight 27 fixed thereto. A bolt 41 for regulating tilted rotation is projected at an inner end of a rotary shaft 7, a shaft portion 41a therefor penetrates through a hole 42 bored in the balance weight 27, and a bearing surface 41c of a head 41b thereof is brought into slidable contact with the inner end surface of the balance weight 27. When the radius of revolution is varied at the time of revolution in a solar motion of a revolving scroll 14, an eccentric driving pin 25 slides in a slide groove 24 and the shaft portion 41a of the bolt 41 slides in hole 42 at the same time. In the interim, the bearing surface 41c of the head into slidable contact with the inner end surface of the balance weight 27, thereby to suppress tilted rotation of the balance weight 27. | ||||||
| 45 | Fluid scroll machine with peripherally attached counter weights and reduced thickness scroll | US397819 | 1989-08-24 | US5059102A | 1991-10-22 | Kiyonori Tokumitsu; Mitsuhiro Nishida; Yasunobu Ozaki |
| A fluid scroll machine whose movable scroll is balanced with a simple construction to decrease the weight and cost of the machine. Counterweights are attached to the peripheral portion of the movable scroll, and the thickness of the engaged portion of the scroll is reduced at the part of the portion, which does not participate in the compression of gas in the machine, so that the scroll is balanced with regard to the rotation thereof. The counterweights are attached to the movable scroll to increase the total mass thereof to balance the scroll. The thickness of the part of the engaged portion of the scroll is reduced to decrease the total mass thereof to balance the scroll. Therefore, the counterweights can be made relatively small. | ||||||
| 46 | Scroll machine with lubricated thrust surfaces | US416981 | 1989-10-04 | US4993929A | 1991-02-19 | Roger C. Weatherston |
| A scroll-type machine which incorporates a self-pressurizing hydrodynamic thrust bearing to maintain a constant interface of oil between the axial thrust surfaces. | ||||||
| 47 | Scroll type fluid displacement apparatus with balanced drive means | US244961 | 1981-03-18 | US4824346A | 1989-04-25 | Masaharu Hiraga; Kiyoshi Terauchi; Kiyosh Miyazawa; Seiichi Sakamoto |
| A scroll-type fluid displacement apparatus, in particular, a compressor unit is disclosed. The unit includes a housing with a fluid inlet port and a fluid outlet port. A fixed scroll with first end plate and first spiral element is fixedly disposed in the housing. An orbiting scroll with a second end plate and a second spiral element is disposed for orbiting motion in the housing. The first and second spiral elements interfit with one another at an angular offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets. A drive pin extends from an inner end of a drive shaft. The orbiting scroll has a boss which rotatably supports a bushing. An eccentric hole is formed in the bushing and the drive pin is received within this hole. The center of the drive pin is located on an opposite side to the center of the drive shaft with regard to a straight line, which passes through the center of the bushing and is perpendicular to a connecting line passing through the center of the drive shaft and the center of the bushing. The center of the drive pin also is beyond the connecting line in the direction of rotation of the drive shaft. The bushing has a balance weight for cancelling a centrifugal force which arises because of the orbiting motion of the scroll member and bushing. Dynamic balance is accomplished by the use of a pair of balance weights affixed to the drive shaft for generating a moment of the same amount, but opposite in direction, to the moment generated by a force due to the interaction of the centrifugal force of the orbiting parts and the first balance weight. | ||||||
| 48 | Scroll-type fluid transferring machine with deformable thrust bearing | US89336 | 1987-08-25 | US4795324A | 1989-01-03 | Tetsuzo Matsugi; Tsutomu Inaba; Norihide Kobayashi |
| A scroll-type fluid transferring machine of an improved construction, in which the bottom surface of the base plate of the orbiting scroll member and the bearing surface of the thrust bearing are well adapted even under a thrusting force during compression of the operating fluid, such scroll-type fluid transferring machine having its feature such that the surface of the thrust bearing to support the base plate of the orbiting scroll member, or the surface of the base plate of the scroll member supported by the thrust bearing is slanted in the radial direction so as to form the surface thereof in a center-concaved shape, wherein the inner peripheral side is concaved with respect to the outer peripheral side at a very small distance in the axial direction, or that an axial projection which is concentric with the thrust bearing and has a narrow width in the radial direction is provided between the opposed surfaces of the thrust bearing and the bearing frame in the vicinity of the center part in the radial direction between the inner peripheral side and the outer peripheral side of the thrust bearing, and further space gaps are provided between the mutually opposed surfaces at the inner peripheral side and the outer peripheral side of the projection. | ||||||
| 49 | Biased drive mechanism for an orbiting fluid displacement member | US713100 | 1985-03-18 | US4580956A | 1986-04-08 | Kazunari Takahashi; Masaharu Hiraga |
| A fluid displacement apparatus is disclosed. The fluid displacement apparatus includes a housing, a fixed fluid displacement member and an orbiting fluid displacement member having an end plate from which an orbiting wall extends. The orbiting member interfits with the fixed member to make a plurality of line contacts to define at least one sealed-off fluid pocket. A drive shaft is rotatably supported by the housing, and has a drive pin which is radially offset from the axis of the drive shaft. The end plate of orbiting piston member has a boss, and bushing is rotatably supported within the boss. The bushing has an eccentric hole disposed eccentrically with respect to the center of the bushing, and the drive pin is inserted in the eccentric hole. A restriction device restricts the swing angle of the bushing and is coupled between the drive shaft and the bushing. The restriction device includes a spring to push the orbiting fluid displacement member in the direction to reduce the orbital radius of the orbiting member. The line contacts between fixed member and orbiting member are thereby separated until the orbiting member reaches a predetermined desired rotational frequency. The compressor thus starts up in an unloaded condition. | ||||||
| 50 | Balancing weight device for scroll-type fluid machine | US544225 | 1983-10-21 | US4522574A | 1985-06-11 | Nobukatsu Arai; Naoki Maeda |
| A balancing weight device for scroll-type fluid machine including a balancing weight rotatably secured to the orbital scroll member of the machine through a bearing, with the balancing weight producing a centrifugal force balancing the centrifugal force produced in the orbital scroll member during operation of the fluid machine. | ||||||
| 51 | Scroll type fluid displacement apparatus with balance weight | US433898 | 1982-10-12 | US4475875A | 1984-10-09 | Kazuo Sugimoto; Kiyoshi Terauchi |
| A scroll type fluid displacement apparatus is disclosed, which includes a housing having a front end plate and a cup shaped casing. A fixed wrap extends into an operative interior area of the casing from an inner end surface of an end plate portion of cup shaped casing. An orbiting scroll has an end plate from which an orbiting wrap extends, and a tubular member axially projects from the end surface of end plate into the operative interior area of the casing. The tubular member has a hollow interior at its center. A drive shaft is rotatably supported by the front end plate and a crank pin extends from its inner end surface. The crank pin is rotatably carried within the hollow interior of the tubular member through a bearing to thereby rotatably support the orbiting scroll. A balance-weight is fixed on the axial end portion of the crank pin to cancel the dynamic unbalance caused by the centrifugal force of the orbital moving parts. | ||||||
| 52 | Scroll-type fluid displacement apparatus with rotation prevention/thrust bearing means for orbiting scroll member | US249656 | 1981-03-31 | US4406600A | 1983-09-27 | Kiyoshi Terauchi; Seiichi Sakamoto |
| A scroll-type of fluid displacement apparatus is disclosed. The apparatus includes a housing having a fluid inlet and a fluid outlet port. A fixed scroll member is fixedly disposed with respect to the housing and has an end surface from which a first wrap extends. An orbiting scroll member is movably disposed within the housing and has an end plate from which a second wrap extends. The first and second wraps interfit at an angular offset to make a plurality of line contacts which define at least one pair of sealed off fluid pockets. A drive mechanism is connected to the orbiting scroll member to transmit orbital motion thereto. A rotation preventing means prevents rotation of orbiting scroll member during orbital motion of the orbiting scroll member and is comprised of fixed ring and a sliding ring. The sliding ring is slidably connected to the fixed ring and also to the second end plate by keys and keyways. A plurality of pockets is formed through the sliding ring and bearing elements are retained within the pockets for transmitting axial thrust load from the orbiting scroll member to the fixed ring. | ||||||
| 53 | Rotary expansible chamber apparatus with stress relief | US120431 | 1979-12-14 | US4318675A | 1982-03-09 | John M. Clarke; Alan W. Wells |
| Rotary expansible chamber devices include slant-axis rotary apparatus such as engines, compressors, pumps, and the like. Eccentric rotating members of such apparatus generate thrust and bending loads of high magnitude during operation thereof. The rotor shaft of the apparatus is subjected to severe bending and thrust loads which tend to fatigue various connections in the apparatus. The present invention provides a connection for counteracting the bending loads, including a bolt (21) extending through a rotor shaft (15), a nut (28) threadably mounted (27) on an end of the rotor shaft, and portions (30,31) of the rotor shaft (15) and bolt (21) which are disposed closely adjacent to the nut (28) and are further disposed in press-fit relationship relative to each other. Thus, bending loads imposed on the rotor shaft are transmitted directly to the bolt but not to the screw threads during operation of the apparatus. | ||||||
| 54 | Screw rotor machine with spring and fluid biased balancing pistons | US484983 | 1974-07-01 | US3932073A | 1976-01-13 | Hjalmar Schibbye; Arnold Englund |
| A screw rotor machine for an elastic working fluid in which the rotors are biassed towards the high pressure end wall by means of balancing pistons and interposed bearings. | ||||||
| 55 | Positive fluid displacement apparatus | US40891273 | 1973-10-23 | US3924977A | 1975-12-09 | MCCULLOUGH JOHN E |
| A positive fluid displacement apparatus employing scroll members having interfitting spiroidal wraps angularly and radially offset such that as the spiral centers experience an orbiting motion, they define one or more moving fluid pockets of variable volume. The zones of lowest and highest pressure are connected to fluid ports. Radial sealing is accomplished with minimum wear by linking the orbiting scroll member to the driving mechanism through a radially compliant mechanical linking means which also incorporates means to counteract at least a fraction of the centrifugal force exerted by the orbiting of the orbiting scroll member. If essentially all of the centrifugal force is counteracted, then the compliant mechanical linking means is designed to supply the necessary radial sealing force. Coupling means, which are separate from the driving means, and hence from the radial constraining force, are provided to maintain the desired angular relationship between scroll members and to provide one opposing force for axial sealing. The other opposing axial sealing force is a combination of biasing means and fluid pressure. The apparatus may serve as a compressor, expander or pump.
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| 56 | Eccentrically disposed male and female spline teeth | US3692440D | 1971-02-08 | US3692440A | 1972-09-19 | WOODLING GEORGE V |
| Eccentrically disposed male and female spline teeth having unlike contact engagement therebetween from one succeeding set of teeth to the next and like contact engagement therebetween only once per revolution.
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| 57 | Balanced fluid pressure valve means | US3658450D | 1970-02-16 | US3658450A | 1972-04-25 | WOODLING GEORGE V |
| Stationary valve means and rotary body means are provided with bushing means including pressure balancing pattern means. The rotary body means has first and second opposed body sides. The first opposed body side constitutes rotary valve means confrontingly engaging the stationary valve means. The second opposed body side constitutes rotary pattern means having a rotary pattern face axially spaced from and facing a stationary reaction wall. The bushing means is non-rotatively mounted between the stationary reaction wall and the rotary pattern face and has first and second end portions. Said first end portion includes a self-prevailing resilient flange confrontingly engaging the stationary reaction wall. The second end portion constitutes non-rotative pattern wall means having a non-rotative pattern face confrontingly engaging said rotary pattern face of said rotary body means. The resilient flange is under axial restraint and transmits an axial thrust to constrain said rotary valve face against said stationary valve face. The bushing means also has pressure responsive means for transmitting an axial fluid force to the rotary body means. Said non-rotative pattern wall means and said rotary pattern means constitute said pressure balancing pattern means to substantially balance said rotary body means between said stationary valve face and said non-rotative pattern face.
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| 58 | Fluid pressure balanced valve | US3425448D | 1966-07-01 | US3425448A | 1969-02-04 | PETERSON JACK W |
| 59 | Fluid handling device including endwalls on a trochoid curved body | US64014367 | 1967-05-22 | US3416460A | 1968-12-17 | KARL EICKMANN |
| 60 | Counterweight or the like for gerotor gear set | US51244565 | 1965-12-08 | US3377873A | 1968-04-16 | PATTERSON JR EARL |
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