WO2010125961A1 - スクロール圧縮機 - Google Patents
スクロール圧縮機 Download PDFInfo
- Publication number
- WO2010125961A1 WO2010125961A1 PCT/JP2010/057123 JP2010057123W WO2010125961A1 WO 2010125961 A1 WO2010125961 A1 WO 2010125961A1 JP 2010057123 W JP2010057123 W JP 2010057123W WO 2010125961 A1 WO2010125961 A1 WO 2010125961A1
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- WIPO (PCT)
- Prior art keywords
- scroll
- orbiting
- spiral wrap
- compression chamber
- fixed
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/063—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with only rolling movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
- F04C18/0276—Different wall heights
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/13—Noise
Definitions
- the present invention relates to a so-called stepped scroll compressor in which a step portion is provided in the spiral direction of a pair of fixed scroll and orbiting scroll forming a compression chamber.
- stepped portions are provided at arbitrary positions along the spiral direction of the tip and bottom surfaces of the spiral wraps of the fixed scroll and the orbiting scroll, and the outer periphery of the spiral wrap is separated from the stepped portions.
- the wrap height on the side is made higher than the wrap height on the inner peripheral side (see, for example, Patent Document 1).
- the axial height of the compression chamber is higher than the height of the inner peripheral side on the outer peripheral side of the spiral wrap, and the three-dimensional can compress gas in both the circumferential direction and the height direction of the spiral wrap.
- the scroll compressor is provided with a rotation prevention mechanism such as a pin ring type or an Oldham ring type in order to prevent the rotation when the orbiting scroll is revolving.
- the rotation prevention mechanism, fixed scroll, and orbiting scroll always have dimensional tolerances and assembly tolerances as parts. Therefore, it is difficult to completely prevent the rotation of the orbiting scroll by the rotation prevention mechanism. For this reason, when the orbiting scroll receives a torsional moment in the orbiting direction due to a compression reaction force or a centrifugal force during operation, the orbiting scroll rotates to vibrate (vibrates) by the above-described tolerance. As a result, the spiral wrap of the orbiting scroll periodically contacts and separates from the spiral wrap of the fixed scroll, causing performance degradation due to gas leakage and generation of abnormal noise due to collision.
- Japanese Patent Application Laid-Open No. 2004-228688 proposes a technique that alleviates the fluctuation (vibration) caused by the gas and suppresses performance degradation due to gas leakage and generation of abnormal noise due to collision.
- JP 2002-5053 A Japanese Patent No. 3540380 JP 2002-180976 A
- Patent Documents 2 and 3 are all the variations due to the dimensional tolerance and assembly tolerance of the parts, compared to the ideal state where the gap between the spiral wraps of both scrolls is 0 (zero).
- 0 zero
- the behavior of the orbiting scroll is stabilized, and the orbiting scroll rotates (oscillates). It is intended to suppress the performance degradation and the generation of abnormal noise due to the above.
- a gap larger than 0 (zero) is set with respect to the ideal state of the gap 0, and a decrease in the absolute value of performance and a variation in driving sound due to vibration are inevitable.
- the present invention has been made in view of such circumstances, taking advantage of the structural features of a so-called stepped scroll compressor to suppress performance degradation and abnormal noise caused by the torsional moment applied to the orbiting scroll.
- An object of the present invention is to provide a scroll compressor that can perform the above-described operation.
- the scroll compressor of the present invention employs the following means. That is, the scroll compressor according to the present invention has a fixed scroll in which a fixed spiral wrap is erected on one surface of a fixed end plate, and a swirl spiral wrap is erected on one surface of a revolving end plate.
- a orbiting scroll that forms a plurality of compression chambers that are point-symmetric by being meshed with each other, and a rotation prevention mechanism that inhibits the rotation of the orbiting scroll and revolves the orbiting scroll around the fixed scroll,
- the fixed scroll and the orbiting scroll are each provided with a step at an arbitrary position along the spiral direction of the spiral wrap, and the wrap height on the outer peripheral side of the spiral wrap is higher than the wrap height on the inner peripheral side.
- a pair of point-symmetric compression chambers in the compression chamber is
- the volume V1 of the compression chamber formed on the ventral surface side of the fixed spiral wrap of the fixed scroll and the volume V2 of the compression chamber formed on the ventral surface side of the orbiting spiral wrap of the orbiting scroll are different sizes. ing.
- the volume V1 of the compression chamber formed on the abdominal surface side of the fixed spiral wrap of the fixed scroll and the orbiting spiral wrap of the orbiting scroll are reduced. Since the volume V2 of the compression chamber formed on the abdominal surface side is different from each other, the torsional moment in the turning direction or the counter-turning direction due to various forces received by the turning scroll depending on the operating state is increased. It is possible to suppress rotation of the orbiting scroll so as to oscillate (vibrate) by balancing with the torsional moment in the reverse direction generated by the pressure on the compression chamber side and stabilizing the behavior of the orbiting scroll. it can.
- the scroll compressor of the present invention is the above scroll compressor, wherein the volume V1 of the compression chamber formed on the abdominal surface side of the fixed spiral wrap of the fixed scroll, and the orbiting spiral wrap of the orbiting scroll.
- the relationship with the volume V2 of the compression chamber formed on the abdominal surface side may be V1> V2.
- the scroll compressor of the present invention is the above scroll compressor, wherein the volume V1 of the compression chamber formed on the abdominal surface side of the fixed spiral wrap of the fixed scroll, and the orbiting spiral wrap of the orbiting scroll.
- the relationship with the volume V2 of the compression chamber formed on the abdominal surface side may be V1 ⁇ V2.
- the scroll compressor according to the present invention is the scroll compressor according to any one of the above-described scroll compressors, wherein the volume V1 of the compression chamber formed on the belly surface side of the fixed spiral wrap of the fixed scroll and the swirl spiral of the orbiting scroll.
- the volume V2 of the compression chamber formed on the abdominal surface side of the wrapping wrap may be different from each other by shifting the installation position of the stepped portion existing in each compression chamber in the spiral direction. .
- the volume V1 of the compression chamber formed on the abdominal surface side of the fixed spiral wrap of the fixed scroll and the volume V2 of the compression chamber formed on the abdominal surface side of the orbiting spiral wrap of the orbiting scroll are Since the sizes of the stepped portions existing in the compression chamber are different from each other by shifting in the spiral direction, when the volume V1 of the compression chamber formed on the abdominal surface side of the fixed spiral wrap is increased, By shifting the step portion existing in the compression chamber toward the inner peripheral end side of the fixed spiral wrap, V1> V2 can be established. On the contrary, when the volume V2 of the compression chamber formed on the ventral surface side of the swirl spiral wrap is increased, the step portion existing in the compression chamber is shifted to the inner peripheral end side of the swirl spiral wrap. > V1. Therefore, the volumes V1 and V2 of the pair of compression chambers can be easily unbalanced by utilizing the structural features of a so-called stepped scroll compressor.
- the scroll compressor according to the present invention is the scroll compressor according to any one of the above-described scroll compressors, wherein the volume V1 of the compression chamber formed on the belly surface side of the fixed spiral wrap of the fixed scroll and the swirl spiral of the orbiting scroll.
- the volume V2 of the compression chamber formed on the abdominal surface side of the wrapping wrap is made different by changing the axial height on the outer peripheral side of the spiral wrap forming each compression chamber. Also good.
- the volume V1 of the compression chamber formed on the abdominal surface side of the fixed spiral wrap of the fixed scroll and the volume V2 of the compression chamber formed on the abdominal surface side of the orbiting spiral wrap of the orbiting scroll are
- the axial height ( the height of the step portion) on the outer peripheral side of the swirling spiral wrap forming the compression chamber.
- V2> V1 can be obtained by increasing the height (S). Therefore, the volumes V1 and V2 of the pair of compression chambers can be easily unbalanced by utilizing the structural features of a so-called stepped scroll compressor.
- the torsional moment in the orbiting direction or the anti-orbiting direction due to various forces received by the orbiting scroll depending on the operating state is balanced by the torsional moment in the reverse direction generated by the pressure on the compression chamber side whose volume is increased.
- the orbiting scroll can be prevented from rotating so as to oscillate (vibrate). For this reason, there is no need to set a gap larger than 0 (zero) for pre-twisting between the scroll wraps of both scrolls, preventing a decrease in the absolute value of performance and generation of abnormal noise due to a collision. Can be improved and stabilized, and driving noise can be reduced.
- FIG. 1st embodiment of the present invention It is a longitudinal section of the scroll compressor concerning a 1st embodiment of the present invention. It is a top view which shows the meshing state of the fixed scroll and turning scroll of the scroll compressor shown in FIG. It is a longitudinal cross-sectional view which shows the meshing state of the fixed scroll and turning scroll of the scroll compressor which concerns on 2nd Embodiment of this invention. It is the schematic diagram which expand
- FIG. 1 is a longitudinal sectional view of a scroll compressor according to the first embodiment of the present invention.
- the scroll compressor 1 has a housing 2 constituting an outer shell.
- the housing 2 is configured by integrally fastening and fixing a front housing 3 and a rear housing 4 with bolts 5.
- the front housing 3 and the rear housing 4 are integrally formed with flanges 3A and 4A for fastening at a plurality of positions on the circumference, for example, four places at equal intervals, and by tightening the flanges 3A and 4A with bolts 5
- the front housing 3 and the rear housing 4 are integrally coupled.
- a crankshaft (drive shaft) 6 is supported inside the front housing 3 via a main bearing 7 and a sub-bearing 8 so as to be rotatable about its axis L.
- One end side (left side in FIG. 1) of the crankshaft 6 is a small-diameter shaft portion 6A, and the small-diameter shaft portion 6A penetrates the front housing 3 and protrudes to the left in FIG.
- the protruding portion of the small-diameter shaft portion 6A is provided with an electromagnetic clutch, a pulley (not shown) that receives power as is well known, and power is transmitted from a drive source such as an engine via a V belt or the like.
- a mechanical seal (lip seal) 9 is installed between the main bearing 7 and the sub-bearing 8 and hermetically seals the inside of the housing 2 and the atmosphere.
- a large-diameter shaft portion 6B is provided on the other end side (right side in FIG. 1) of the crankshaft 6.
- the large-diameter shaft portion 6B has a crank pin that is eccentric from the axis L of the crankshaft 6 by a predetermined dimension.
- 6C is provided integrally.
- the crankshaft 6 is rotatably supported by the large-diameter shaft portion 6B and the small-diameter shaft portion 6A supported by the front housing 3 via the main bearing 7 and the sub-bearing 8.
- the crankpin 6C is connected to a turning scroll 15 described later via a drive bush 10, a cylindrical ring (floating bush) 11 and a drive bearing 12, and the turning scroll 15 is driven to turn by rotating the crankshaft 6. It is like that.
- the drive bush 10 is integrally formed with a balance weight 10 ⁇ / b> A for removing an unbalanced load generated when the orbiting scroll 15 is orbitally driven and is orbited together with the orbiting scroll 15. .
- the drive bush 10 is provided with a crank pin hole 10B into which the crank pin 6C is fitted at a position eccentric with respect to the center thereof. As a result, the drive bush 10 and the orbiting scroll 15 fitted to the crank pin 6C are rotated around the crank pin 6C under the gas compression reaction force, and a known follower that makes the orbiting radius of the orbiting scroll 15 variable.
- a crank mechanism is configured.
- a scroll compression mechanism 13 including a pair of fixed scroll 14 and orbiting scroll 15 is incorporated in the housing 2.
- the fixed scroll 14 includes a fixed end plate 14A and a fixed spiral wrap 14B standing on the fixed end plate 14A, and the orbiting scroll 15 stands on the orbiting end plate 15A and the end plate 15A. And the swirl spiral wrap 15B.
- the fixed scroll 14 and the orbiting scroll 15 are provided with step portions 14D, 14E and 15D, 15E (see FIG. 2) at predetermined positions along the spiral direction of the tip and bottom surfaces of the spiral wraps 14B, 15B, respectively. It has been. With this stepped portion 14D, 14E and 15D, 15E as the boundary, the tip end surface on the outer peripheral side is high in the turning axis direction, and the tip end surface on the inner peripheral side is made low in the turning axis direction. In the bottom surface, the bottom surface on the outer peripheral side is low in the direction of the turning axis, and the bottom surface on the inner peripheral side is high. As a result, each of the spiral wraps 14B and 15B has a wrap height on the outer peripheral side higher than a wrap height on the inner peripheral side.
- the fixed scroll 14 and the orbiting scroll 15 are separated from each other by the orbiting radius, and the phases of the spiral wraps 14B and 15B are shifted by 180 degrees to engage with each other, and the front and bottom surfaces of the spiral wraps 14B and 15B are engaged with each other. And a clearance in the wrap height direction (tens to hundreds of microns) at room temperature.
- a plurality of pairs of compression chambers 16 limited by the end plates 14A and 15A and the spiral wraps 14B and 15B are located between the scrolls 14 and 15 with respect to the scroll center.
- the orbiting scroll 15 is configured to be able to smoothly orbit around the fixed scroll 14.
- the compression chamber 16 has a height in the swirl axis direction that is higher on the outer peripheral side of each spiral wrap 14B, 15B than on the inner peripheral side, so that the circumferential direction and height direction of each spiral wrap 14B, 15B are increased.
- a scroll compression mechanism 13 capable of three-dimensional compression that can compress gas is formed on both sides.
- Tip seals 17 for sealing a tip seal surface formed between the bottom surfaces of the other scrolls are provided on the tip surfaces of the spiral wraps 14B and 15B of the fixed scroll 14 and the orbiting scroll 15, respectively. Is provided by being fitted in a groove provided in the.
- the fixed scroll 14 is fixedly installed on the inner surface of the rear housing 4 via bolts 18.
- the crank pin 6C provided on one end side of the crankshaft 6 is connected to the drive bush 10 and the cylindrical ring (floating) as described above with respect to the boss portion 15C provided on the back surface of the orbiting end plate 15A. It is connected via a bush) 11 and a drive bearing 12 and is configured to be driven to rotate.
- the orbiting scroll 15 has a back surface of the orbiting end plate 15A supported on the thrust receiving surface 3B of the front housing 3, and a rotation prevention mechanism 19 provided between the thrust receiving surface 3B and the back surface of the orbiting end plate 15A.
- the rotation is driven around the fixed scroll 14 while being prevented from rotating.
- the rotation prevention mechanism 19 of the present embodiment is a pin provided on the front housing 3 with respect to the inner peripheral surface of the rotation prevention ring 19A incorporated in a ring hole provided on the turning end plate 15A of the turning scroll 15.
- a rotation prevention mechanism 19 is a pin ring type rotation prevention mechanism 19 in which a rotation prevention pin 19B incorporated in the hole is slidably fitted.
- the fixed scroll 14 has a discharge port 14C that discharges the compressed refrigerant gas at the central portion of the fixed end plate 14A.
- the discharge port 14C is attached to the fixed end plate 14A via a retainer 20.
- a discharge reed valve 21 is installed.
- a sealing member 22 such as an O-ring is interposed on the back side of the fixed end plate 14 ⁇ / b> A so as to be in close contact with the inner surface of the rear housing 4, and from the inner space of the housing 2 to the inner surface of the rear housing 4.
- a partitioned discharge chamber 23 is formed.
- the internal space of the housing 2 excluding the discharge chamber 23 is configured to function as the suction chamber 24.
- Refrigerant gas returning from the refrigeration cycle is sucked into the suction chamber 24 through the suction port 25 provided in the front housing 3, and the refrigerant gas is sucked into the compression chamber 16 through the suction chamber 24.
- a sealing material 26 such as an O-ring is interposed on the joint surface between the front housing 3 and the rear housing 4 to seal the suction chamber 24 formed in the housing 2 in an airtight manner against the atmosphere.
- FIG. 2 shows the volumes V1 and V2 at the position where the orbiting scroll 15 is turned to the right by about 155 ° from the suction closing position.
- FIG. 2 shows a state in which the orbiting scroll 15 has been turned to the right by about 155 ° from the time of the intake deadline.
- ⁇ represents the advance angle from the outer peripheral ends 14F and 15F of the fixed spiral wrap 14B and the swirl spiral wrap 15B to the position where the step portions 14E and 15E are provided, and is usually the step portion 14E. , 15E are provided at the same traveling angle ⁇ .
- the volume V1 of the compression chamber 16 formed on the abdominal surface side of the fixed spiral wrap 14B and the volume V2 of the compression chamber 16 formed on the abdominal surface side of the swirl spiral wrap 15B have different sizes. Therefore, the volume V1, the volume V1, and the like are obtained so that a torsional moment in the turning direction (spinning moment) due to the compression reaction force or centrifugal force that the orbiting scroll 15 receives during operation can be obtained.
- V2 is V1> V2
- the step 14E on the fixed scroll 14 side existing in the compression chamber 16 formed on the abdominal surface side of the fixed spiral wrap 14B is replaced with the inner portion of the fixed spiral wrap 14B.
- the capacity of the compression chamber 16 formed on the abdominal surface side of the fixed spiral wrap 14B is shifted to the peripheral end side by a predetermined angle and installed at the position of the advance angle ⁇ 1. It is larger than the volume V2 of the compression chamber 16 formed to V1 on the ventral surface of the orbiting spiral wrap 15B.
- V2 the relationship of V2 is V1 ⁇ V2
- the volume V2 of the compression chamber 16 formed on the abdominal surface side of the swirling spiral wrap 15B is formed on the abdominal surface side of the fixed spiral wrap 14B by shifting it by a predetermined angle toward the peripheral end side and installing it at the position of the advance angle ⁇ 2.
- the volume V1 of the compression chamber 16 to be made is larger.
- the volumes V1 and V2 of the pair of compression chambers 16 are unbalanced by shifting the stepped portions 14E and 15E on the compression chamber 16 side that are paired with the chamber 16 to the outer peripheral end sides of the spiral wraps 14B and 15B. can do.
- the revolving turning drive of the orbiting scroll 15 causes the refrigerant gas in the suction chamber 24 to be taken into the pair of compression chambers 16 formed on the outermost periphery in the radial direction.
- the compression chamber 16 is moved toward the center while the volume thereof is reduced in the circumferential direction and the lap height direction.
- the refrigerant gas is compressed, and when the compression chamber 16 reaches a position communicating with the discharge port 14C, the discharge reed valve 21 is pushed open.
- the compressed high-temperature and high-pressure gas is discharged into the discharge chamber 23 and is sent to the outside of the scroll compressor 1 through the discharge chamber 23.
- the orbiting scroll 15 receives a torsional moment (spinning moment) in the orbiting direction (clockwise in this case) due to gas compression reaction force, centrifugal force, or the like.
- the torsional moment is received by the rotation prevention mechanism 19 and the rotation of the orbiting scroll 15 is prevented.
- the rotation prevention mechanism 19, the fixed scroll 14 and the orbiting scroll 15 have dimensional tolerances of their respective parts. And there is an assembly tolerance, the rotation cannot be completely prevented, and a play within the tolerance is allowed.
- the orbiting scroll 15 When the orbiting scroll 15 receives a force in each direction due to this play, the behavior becomes unstable, and the orbiting scroll rotates to vibrate (oscillate) in the orbiting direction or the opposite direction.
- the spiral wraps 14B and 15B of the orbiting scroll 15 and the ring 19A and the pin 19B of the rotation prevention mechanism 19 are brought into contact with and separated from each other, and performance degradation and collision noise occur due to gas leakage.
- the volumes V1 and V2 of the pair of compression chambers 16 formed at the time of suction closing are unbalanced, and the pressure on the compression chamber 16 side with the larger volume is increased.
- a torsional moment in the orbiting direction or in the opposite direction is applied to the orbiting scroll 15 to stabilize the behavior of the orbiting scroll 15.
- the orbiting scroll 15 has a compression reaction force or a centrifugal force.
- the torsional moment in the swirling direction received by the balance is balanced by the torsional moment in the counter-rotating direction generated by the pressure on the compression chamber 16 side formed on the abdominal surface side of the fixed spiral wrap 14B having a large volume V1.
- the orbiting scroll 15 can be prevented from rotating so as to oscillate (vibrate) in the orbiting direction, and in particular, without providing a gap with respect to the ideal gap 0 (zero). Further, it is possible to prevent performance degradation and abnormal noise caused by the torsional moment applied to the orbiting scroll 15, and to improve and stabilize performance and reduce driving noise.
- the position of the step portion 15E of the orbiting scroll 15 is shifted toward the inner peripheral end side of the wrap so as to be the position of the advance angle ⁇ 1 and V1 ⁇ V2
- the relationship with the volume V2 of 16 is applied to the orbiting scroll 15 depending on the driving state.
- the torsional moment is reversed at the 180 ° true reverse position during one revolution, and the behavior of the orbiting scroll 15 is It may become unstable and the contact of the rotation prevention mechanism 19 may be switched to generate abnormal noise.
- the side of the compression chamber 16 formed on the belly surface side of the orbiting spiral wrap 15B in which the volume V2 is increased is the torsional moment in the same direction as the orbiting moment that the orbiting scroll 15 receives due to the compression reaction force or centrifugal force.
- a pair of compression chambers 16 is used to unbalance the volume V1 of the compression chamber 16 formed on the ventral surface side of the fixed spiral wrap 14B and the volume V2 of the compression chamber 16 formed on the ventral surface side of the swirling spiral wrap 15B.
- V2> V1 can be established by shifting the step portion 15E toward the inner peripheral end of the wrap.
- V1 and V2 of the pair of compression chambers 16 can be easily unbalanced by utilizing the structural features of the stepped scroll compressor 1.
- FIGS. 3 a second embodiment of the present invention will be described with reference to FIGS.
- This embodiment is different from the first embodiment described above in that the volumes V1 and V2 of the pair of compression chambers 16 have different sizes by changing the axial height on the outer peripheral side of the spiral wrap. Since other points are the same as those in the first embodiment, description thereof will be omitted.
- the axial heights of the spiral wraps 14B and 15B on the outer peripheral end side with respect to the stepped portions 14E and 15E formed on the fixed scroll 14 and the orbiting scroll 15 are different from each other.
- the volume V1 of the compression chamber 16 formed on the abdominal surface side of the fixed spiral wrap 14B and the volume V2 of the compression chamber 16 formed on the abdominal surface side of the swirling spiral wrap 15B are made to have different sizes. ing.
- L the height of the step portion 14E (15E) of one scroll 14 (15)
- l the height of the step portion 15E (14E) of the other scroll 15 (14)
- L + l and L + l- ⁇ The heights in the axial direction of the spiral wraps 14B and 15B on the outer peripheral end side with respect to the step portions 14E and 15E are set to different heights (L + l and L + l- ⁇ ).
- the volume V1 of the compression chamber 16 formed on the ventral surface side of the fixed spiral wrap 14B and the volume V2 of the compression chamber 16 formed on the ventral surface side of the swirling spiral wrap 15B are unbalanced (see FIG. 4). .
- V1 of the compression chamber 16 formed on the abdominal surface side of the fixed spiral wrap 14B of the fixed scroll 14 and the volume of the compression chamber 16 formed on the abdominal surface side of the orbiting spiral wrap 15B of the orbiting scroll 15 are shown.
- V1 can be obtained by reversing the relation between the heights 1 and 1 ⁇ of the step portions 14E and 15E from the form shown in the figure. > V2.
- the present invention is not limited to the invention according to the above-described embodiment, and can be modified as appropriate without departing from the scope of the invention.
- the invention in the above-described embodiment, an example has been described in which the invention is applied to the open scroll compressor 1 driven by receiving power from the outside, but the present invention can also be applied to a hermetic scroll compressor having a built-in electric motor as a power source.
- the pin ring type rotation prevention mechanism has been described as the rotation prevention mechanism 19 of the orbiting scroll 15
- another rotation prevention mechanism such as an Oldham ring type may be used.
- the driven crank mechanism is not limited to that of the above-described embodiment in which the swing method is used, and another type of driven crank mechanism may be used.
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Abstract
Description
すなわち、本発明にかかるスクロール圧縮機は、固定端板の一面に固定渦巻き状ラップが立設されている固定スクロールと、旋回端板の一面に旋回渦巻き状ラップが立設され、前記固定スクロールに噛合わされることにより点対称をなす複数の圧縮室を形成する旋回スクロールと、前記旋回スクロールの自転を阻止し、該旋回スクロールを前記固定スクロールの周りに公転旋回させる自転阻止機構と、を備え、前記固定スクロールおよび前記旋回スクロールには、それぞれ前記渦巻き状ラップの渦巻き方向に沿う任意の位置に段部が設けられ、前記渦巻き状ラップの外周側におけるラップ高さが内周側のラップ高さよりも高くされているスクロール圧縮機において、前記圧縮室の中の点対称をなす一対の圧縮室は、吸入締め切りされる際、前記固定スクロールの前記固定渦巻き状ラップの腹面側に形成される圧縮室の容積V1と、前記旋回スクロールの前記旋回渦巻き状ラップの腹面側に形成される圧縮室の容積V2とが互いに異なる大きさとされている。
[第1実施形態]
以下、本発明の第1実施形態について、図1、図2および図4を用いて説明する。
図1には、本発明の第1実施形態に係るスクロール圧縮機の縦断面図が示されている。スクロール圧縮機1は、外殻を構成するハウジング2を有している。ハウジング2は、フロントハウジング3とリアハウジング4とをボルト5で一体的に締め付け固定することにより構成されている。フロントハウジング3およびリアハウジング4には、円周上の複数箇所、例えば4箇所に等間隔で締め付け用のフランジ3A,4Aが一体に形成され、このフランジ3A,4A同士をボルト5で締め付けることによって、フロントハウジング3とリアハウジング4とが一体に結合されている。
外部駆動源から図示省略のプーリーおよび電磁クラッチを介して回転駆動力をクランク軸6に伝達し、クランク軸6を回転すると、そのクランクピン6Cにドライブブッシュ10、円筒環(フローティングブッシュ)11およびドライブ軸受12を介して旋回半径が可変に連結されている旋回スクロール14が、ピンリング式自転阻止機構19により自転を阻止されながら、固定スクロール15の周りに所定の旋回半径で公転旋回駆動される。
次に、本発明の第2実施形態について、図3および図4を用いて説明する。
本実施形態は、上記した第1実施形態に対して、渦巻き状ラップの外周側の軸線方向高さを変えることによって一対の圧縮室16の容積V1,V2を異なる大きさとしている点が異なる。その他の点については、第1実施形態と同様であるので説明を省略する。
本実施形態では、図3に示されるように、固定スクロール14および旋回スクロール15に形成される段部14E,15Eよりも外周端側の渦巻き状ラップ14B,15Bの軸線方向高さを異なる高さとすることにより、固定渦巻き状ラップ14Bの腹面側に形成される圧縮室16の容積V1と旋回渦巻き状ラップ15Bの腹面側に形成される圧縮室16の容積V2とが異なる大きさとされるようにしている。
14 固定スクロール
14A 固定端板
14B 固定渦巻き状ラップ
14E 段部
15 旋回スクロール
15A 旋回端板
15B 旋回渦巻き状ラップ
15E 段部
16 圧縮室
19 自転阻止機構
V1 固定渦巻き状ラップの腹面側に形成される圧縮室の容積
V2 旋回渦巻き状ラップの腹面側に形成される圧縮室の容積
θ1 渦巻き方向にずらされた固定スクロールの段部の進行角
θ2 渦巻き方向にずらされた旋回スクロールの段部の進行角
L+l-α 旋回渦巻き状ラップの軸線方向高さ
L+l 高くされた旋回渦巻き状ラップの軸線方向高さ
Claims (5)
- 固定端板の一面に固定渦巻き状ラップが立設されている固定スクロールと、
旋回端板の一面に旋回渦巻き状ラップが立設され、前記固定スクロールに噛合わされることにより点対称をなす複数の圧縮室を形成する旋回スクロールと、
前記旋回スクロールの自転を阻止し、該旋回スクロールを前記固定スクロールの周りに公転旋回させる自転阻止機構と、を備え、
前記固定スクロールおよび前記旋回スクロールには、それぞれ前記渦巻き状ラップの渦巻き方向に沿う任意の位置に段部が設けられ、前記渦巻き状ラップの外周側におけるラップ高さが内周側のラップ高さよりも高くされているスクロール圧縮機において、
前記圧縮室の中の点対称をなす一対の圧縮室は、吸入締め切りされる際、前記固定スクロールの前記固定渦巻き状ラップの腹面側に形成される圧縮室の容積V1と、前記旋回スクロールの前記旋回渦巻き状ラップの腹面側に形成される圧縮室の容積V2とが互いに異なる大きさとされているスクロール圧縮機。 - 前記固定スクロールの前記固定渦巻き状ラップの腹面側に形成される前記圧縮室の容積V1と、前記旋回スクロールの前記旋回渦巻き状ラップの腹面側に形成される前記圧縮室の容積V2との関係が、V1>V2とされている請求項1に記載のスクロール圧縮機。
- 前記固定スクロールの前記固定渦巻き状ラップの腹面側に形成される前記圧縮室の容積V1と、前記旋回スクロールの前記旋回渦巻き状ラップの腹面側に形成される前記圧縮室の容積V2との関係が、V1<V2とされている請求項1に記載のスクロール圧縮機。
- 前記固定スクロールの前記固定渦巻き状ラップの腹面側に形成される前記圧縮室の容積V1および前記旋回スクロールの前記旋回渦巻き状ラップの腹面側に形成される前記圧縮室の容積V2が、それぞれの圧縮室に存在している前記段部の設置位置を渦巻き方向にずらすことによって互いに異なる大きさとされている請求項1ないし3のいずれかに記載のスクロール圧縮機。
- 前記固定スクロールの前記固定渦巻き状ラップの腹面側に形成される前記圧縮室の容積V1および前記旋回スクロールの前記旋回渦巻き状ラップの腹面側に形成される前記圧縮室の容積V2が、それぞれの圧縮室を形成している前記渦巻き状ラップの外周側の軸線方向高さを変えることによって異なる大きさとされている請求項1ないし3のいずれかに記載のスクロール圧縮機。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10769660.1A EP2426359B1 (en) | 2009-04-27 | 2010-04-22 | Scroll compressor |
BRPI1004936-3A BRPI1004936B1 (pt) | 2009-04-27 | 2010-04-22 | compressor de voluta |
CN201080003042.0A CN102197223B (zh) | 2009-04-27 | 2010-04-22 | 涡旋压缩机 |
US13/123,836 US9145770B2 (en) | 2009-04-27 | 2010-04-22 | Scroll compressor with stepped spiral wraps |
KR1020117008693A KR101223314B1 (ko) | 2009-04-27 | 2010-04-22 | 스크롤 압축기 |
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JP2009-107698 | 2009-04-27 | ||
JP2009107698A JP5386219B2 (ja) | 2009-04-27 | 2009-04-27 | スクロール圧縮機 |
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WO2010125961A1 true WO2010125961A1 (ja) | 2010-11-04 |
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PCT/JP2010/057123 WO2010125961A1 (ja) | 2009-04-27 | 2010-04-22 | スクロール圧縮機 |
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US (1) | US9145770B2 (ja) |
EP (1) | EP2426359B1 (ja) |
JP (1) | JP5386219B2 (ja) |
KR (1) | KR101223314B1 (ja) |
CN (1) | CN102197223B (ja) |
BR (1) | BRPI1004936B1 (ja) |
WO (1) | WO2010125961A1 (ja) |
Families Citing this family (9)
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CN102182687A (zh) * | 2011-05-26 | 2011-09-14 | 浙江临安昌化机芯配件厂 | 滑动压环式气体压缩机 |
CN102493847B (zh) * | 2011-11-16 | 2013-05-22 | 陈冬长 | 一种涡旋膨胀发电机及朗肯循环热电转换系统 |
JP6339340B2 (ja) * | 2013-10-08 | 2018-06-06 | サンデンホールディングス株式会社 | スクロール型流体機械 |
JP6279926B2 (ja) | 2014-02-17 | 2018-02-14 | 三菱重工業株式会社 | スクロール圧縮機 |
US10425724B2 (en) * | 2014-03-13 | 2019-09-24 | Starkey Laboratories, Inc. | Interposer stack inside a substrate for a hearing assistance device |
DE102014113435A1 (de) * | 2014-09-17 | 2016-03-17 | Bitzer Kühlmaschinenbau Gmbh | Kompressor |
US10619635B2 (en) * | 2016-07-21 | 2020-04-14 | Trane International Inc. | Scallop step for a scroll compressor |
JP6336534B2 (ja) * | 2016-08-26 | 2018-06-06 | 三菱重工サーマルシステムズ株式会社 | スクロール流体機械およびスクロール部材の加工方法 |
US12049893B2 (en) | 2022-09-13 | 2024-07-30 | Mahle International Gmbh | Electric compressor having a compression device with a fixed scroll having a modified scroll floor and a fixed scroll having a modified scroll floor |
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- 2010-04-22 KR KR1020117008693A patent/KR101223314B1/ko active IP Right Grant
- 2010-04-22 US US13/123,836 patent/US9145770B2/en active Active
- 2010-04-22 CN CN201080003042.0A patent/CN102197223B/zh active Active
- 2010-04-22 EP EP10769660.1A patent/EP2426359B1/en active Active
- 2010-04-22 WO PCT/JP2010/057123 patent/WO2010125961A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
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CN102197223A (zh) | 2011-09-21 |
JP2010255558A (ja) | 2010-11-11 |
US20110200475A1 (en) | 2011-08-18 |
US9145770B2 (en) | 2015-09-29 |
JP5386219B2 (ja) | 2014-01-15 |
EP2426359A1 (en) | 2012-03-07 |
KR20110053485A (ko) | 2011-05-23 |
EP2426359B1 (en) | 2019-06-12 |
BRPI1004936B1 (pt) | 2020-07-07 |
BRPI1004936A2 (pt) | 2016-03-22 |
EP2426359A4 (en) | 2017-06-14 |
KR101223314B1 (ko) | 2013-01-16 |
CN102197223B (zh) | 2014-05-14 |
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