WO2015098467A1 - Scroll fluid machine - Google Patents

Scroll fluid machine Download PDF

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Publication number
WO2015098467A1
WO2015098467A1 PCT/JP2014/082241 JP2014082241W WO2015098467A1 WO 2015098467 A1 WO2015098467 A1 WO 2015098467A1 JP 2014082241 W JP2014082241 W JP 2014082241W WO 2015098467 A1 WO2015098467 A1 WO 2015098467A1
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WO
WIPO (PCT)
Prior art keywords
scroll
housing
wrap
orbiting
orbiting scroll
Prior art date
Application number
PCT/JP2014/082241
Other languages
French (fr)
Japanese (ja)
Inventor
智浩 笹尾
岡本　裕介
Original Assignee
三浦工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三浦工業株式会社 filed Critical 三浦工業株式会社
Priority to CN201480054054.4A priority Critical patent/CN105612351B/en
Priority to KR1020167005749A priority patent/KR102260104B1/en
Publication of WO2015098467A1 publication Critical patent/WO2015098467A1/en

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Classifications

    • 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
    • F04C18/0223—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 with symmetrical double wraps
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/70—Disassembly methods

Definitions

  • the present invention relates to a scroll fluid machine used as a compressor, an expander or a blower.
  • the scroll compressor includes a pair of fixed scrolls (1, 2), a turning scroll (3), a drive shaft (5), and an auxiliary drive shaft (6).
  • the fixed scrolls (1, 2) are provided with spiral fixed wraps (1b, 2b) on one side of the end plates (1a, 2a).
  • the orbiting scroll (3) is provided with spiral orbiting wraps (3b, 3c) on both sides of the end plate (3a). In a state where the fixed wrap (1b, 2b) and the orbiting wrap (3b, 3c) are engaged, the orbiting scroll (3) is sandwiched between the pair of fixed scrolls (1, 2).
  • the drive shaft (5) and the auxiliary drive shaft (6) are each provided with an eccentric shaft portion in the middle in the axial direction, and the orbiting scroll (3) is interposed on the eccentric shaft portion via bearings (11a, 11b). Retained.
  • the rotation of the drive shaft (5) is transmitted to the auxiliary drive shaft (6) through a rotation synchronization mechanism provided with a timing belt (17), and the orbiting scroll (3) rotates with respect to the fixed scrolls (1, 2). .
  • gas is sucked from the suction port (22), compressed, and discharged to the discharge port (10).
  • the problem to be solved by the present invention is to provide a scroll fluid machine in which the fixed scroll can be easily detached from the orbiting scroll without requiring large-scale disassembly, and thereby the internal maintenance is easy.
  • the present invention has been made in order to solve the above-mentioned problems, and the invention according to claim 1 is characterized in that the orbiting scroll provided with spiral orbiting wraps on both surfaces of the substrate portion and the orbiting wrap can be orbited.
  • a housing having a housing hole to be accommodated, wherein the substrate portion is disposed perpendicular to the axis of the housing hole, and the orbiting scroll is rotatably held by a crankshaft at three or more circumferential directions on the outer peripheral portion of the substrate portion;
  • a spiral fixed wrap is provided on one side of the end plate, and the fixed wrap is engaged with the orbiting wrap, and a pair of fixed scrolls are provided detachably on the housing so as to sandwich the orbiting scroll. It is the scroll fluid machine characterized.
  • the orbiting scroll has the orbiting wrap disposed in the housing hole of the housing and is held in the housing so as to be orbitable.
  • the fixed scroll is detachably provided on the housing so as to close the housing hole of the housing. Therefore, the fixed scroll can be easily detached from the housing without disassembling the bearing portion of the orbiting scroll with respect to the housing, and the internal maintenance can be easily performed. Further, since the orbiting scroll is held in the housing by the crankshaft at three or more locations in the circumferential direction, no dead point is generated when the orbiting scroll is rotated.
  • a tip seal that fills a gap with the end plate of the fixed scroll along the spiral of the swirl wrap is attached to and detached from the swivel wrap along the spiral of the swirl wrap.
  • the fixed wrap is detachably provided with a tip seal extending from the end plate along the spiral of the fixed wrap so as to fill a gap with the substrate portion of the orbiting scroll.
  • the fixed scroll can be easily removed from the housing without disassembling the bearing portion of the orbiting scroll with respect to the housing, and each tip seal of the fixed wrap and the orbiting wrap can be easily replaced. Yes.
  • a cylindrical outer peripheral wrap is provided on an end plate of the fixed scroll so as to surround the fixed wrap, and the outer peripheral wrap is provided with a leading end extending from the end plate.
  • the fixed scroll can be easily removed from the housing without disassembling the bearing portion of the orbiting scroll with respect to the housing, and the outer seal of the outer peripheral wrap can be easily replaced.
  • a pair of flanges are formed in the middle of the housing hole in the axial direction so as to be separated from each other in the axial direction of the housing hole and extend to the inside of the housing hole.
  • the outer peripheral portion of the orbiting scroll is held by the crankshaft so as to be orbitable with respect to the fixed scroll outside the housing hole of the housing through an opening between the pair of flanges, and the flange of the housing.
  • the end plates of the fixed scroll are overlapped and fixed detachably, and a rotational driving force is given to only one of the crankshafts installed at three or more locations in the circumferential direction of the housing.
  • Item 4 The scroll fluid machine according to any one of Items 1 to 3.
  • the fixed scroll can be attached to and detached from the flange provided in the housing hole of the housing. Since the flange is provided in the middle of the receiving hole in the axial direction, the end plate of the fixed scroll can be disposed and attached in the receiving hole, and can be assembled compactly. Further, only one of the crankshafts installed at three or more locations in the circumferential direction of the housing is given a rotational driving force, and a rotation synchronization mechanism is unnecessary. That is, even when used as a compressor or a blower, it is not necessary to apply a rotational driving force to all the crankshafts using the rotation synchronization mechanism, and a rotational driving force is applied to only one crankshaft (that is, input). Just do it.
  • the orbiting scroll can be rotated by a fluid, and a rotational driving force can be applied (that is, output) to only one crankshaft.
  • a rotational driving force that is, output
  • the orbiting scroll includes an orbiting scroll base that is held by the housing via the crankshaft, and an orbiting scroll body that is provided on both sides of the center portion of the orbiting scroll base.
  • the scroll fluid machine according to any one of claims 1 to 4, wherein the orbiting scroll main body includes the orbiting wrap and is detachably attached to the orbiting scroll base.
  • the orbiting scroll main body having the orbiting wrap is detachable from the orbiting scroll base supported by the housing, the orbiting scroll main body is removed from the orbiting scroll base. Maintenance of the scroll body is facilitated. That is, since a pair of orbiting scroll bodies can be handled individually one by one, maintenance is facilitated.
  • FIG. 3 is a sectional view taken along line III-III in FIG.
  • FIG. 4 is a partially enlarged view of FIG. 3, showing a state in which the fixed scroll is removed from the housing.
  • FIG. 1 to 4 are schematic views showing an embodiment of a scroll fluid machine 1 according to the present invention.
  • FIG. 1 is a plan view
  • FIG. 2 is a bottom view
  • FIG. 3 is a sectional view taken along line III-III in FIG. 4 is a partially enlarged view of FIG.
  • directions may be described as up and down and left and right in FIG. 3 (strictly, the left half or right half is a cross-sectional view of III-III). It is not intended to limit the attitude.
  • the scroll fluid machine 1 of the present embodiment includes a housing 2, a turning scroll 3 that is rotatably held in the housing 2, and a pair of fixed scrolls that are detachably fixed to the housing 2. 4.
  • the housing 2 is formed into a thick short cylindrical shape, and the central through-hole is an accommodation hole 6 that accommodates the orbiting wrap 5 of the orbiting scroll 3 so as to be orbitable.
  • the accommodation hole 6 also accommodates the fixed wrap 7 of the fixed scroll 4.
  • a hollow portion 8 is formed along the circumferential direction so as to open to the inner peripheral surface of the axially intermediate portion, and the axial direction sandwiching the opening 9 of the hollow portion 8 on the inner peripheral surface Flange 10 is formed on both sides so as to extend radially inward. More specifically, a hollow portion 8 is continuously formed in the circumferential side wall of the housing 2 along the circumferential direction, and the hollow portion 8 is formed at the center in the vertical direction of the inner circumferential surface of the circumferential side wall. It opens continuously along the circumferential direction, and an annular plate-like flange 10 is integrally formed so as to extend radially inward above and below the opening 9.
  • the housing 2 is composed of two upper and lower members. Specifically, in FIG. 3, the housing 2 is composed of an upper housing material 2 ⁇ / b> A disposed above and a lower housing material 2 ⁇ / b> B disposed below. Of the pair of upper and lower flanges 10 described above, the upper flange 10 is provided on the upper housing member 2A, and the lower flange 10 is provided on the lower housing member 2B. Both housing materials 2A and 2B are detachably integrated with screws 11 (FIG. 1) at the outer periphery.
  • the orbiting scroll 3 is configured by providing spiral orbiting wraps 5 on both surfaces of a disk-shaped substrate portion 12.
  • the orbiting scroll 3 includes an orbiting scroll base 13 that is rotatably held in the housing 2 and a pair of orbiting scroll bodies 14 that are fixed above and below the central portion of the orbiting scroll base 13. .
  • the orbiting scroll base 13 may be integrally formed with one or both of the pair of orbiting scroll bodies 14.
  • the orbiting scroll base 13 includes an annular plate-like portion 15, and the center round hole 16 is enlarged in both upper and lower surfaces. Then, the end plate 17 of the orbiting scroll body 14 is fitted and fixed in the enlarged diameter hole 16a.
  • attachment cylinders 19 to the crankshaft 18 are integrally formed at three circumferentially equal intervals.
  • the mounting cylinder 19 is arranged with its axis line along the vertical direction.
  • the vertical dimension of the mounting cylinder 19 is formed larger than the vertical dimension (thickness) of the plate-like portion 15.
  • Each orbiting scroll main body 14 is provided with one or a plurality of plate-like orbiting wraps 5 on one side of a disk-like end plate 17 perpendicular to the plate surface.
  • the upper orbiting scroll body 14 is provided with the orbiting wrap 5 upward on the upper surface of the end plate 17, and the lower orbiting scroll body 14 includes the end plate 17.
  • a swirl wrap 5 is provided on the lower surface facing downward. At this time, each swirl wrap 5 is formed to be curved in a spiral shape of an involute curve from the central portion of the end plate 17 toward the outer peripheral portion.
  • each orbiting wrap 5 the gap between the fixed scroll 4 and the end plate 20 is filled in the leading end portion extending from the end plate 17 (the upper end portion of the upper orbiting wrap 5 and the lower end portion of the lower orbiting wrap 5).
  • a tip seal 21 is provided along the spiral so as to be detachable.
  • each orbiting scroll main body 14 is fitted in the diameter-enlarged hole 16a of the orbiting scroll base 13, and is fixed to the orbiting scroll base 13 by screws (not shown).
  • the plate-like portion 15 of the orbiting scroll base 13 and the end plate 17 of the orbiting scroll main body 14 are integrated to constitute the substrate portion 12 of the orbiting scroll 3.
  • the turning scroll 3 becomes a shape by which the turning wrap 5 was provided in both surfaces of the board
  • a cylindrical spacer 22 is provided between the end plates 17 of the upper and lower orbiting scroll bodies 14 at the center in the radial direction, and the bending of each orbiting scroll body 14 is prevented.
  • the substrate portion 12 is arranged perpendicular to the axis of the accommodation hole 6 in a state where the orbiting wrap 5 is arranged in the accommodation hole 6 of the housing 2. At this time, the outer peripheral portion of the substrate portion 12 extends outward from the accommodation hole 6 through the opening 9 between the flanges 10 of the housing 2. And the orbiting scroll 3 is hold
  • crankshaft 18X Of the three crankshafts 18, one is a drive crankshaft 18X to which a rotational driving force is applied, and the remaining two are driven crankshafts 18Y to which such a rotational driving force is not applied.
  • FIG. 3 one shown on the left side is the drive crankshaft 18X, and the remaining two are the driven crankshaft 18Y.
  • the drive crankshaft 18X extends in the axial direction (downward in FIG. 3) from the driven crankshaft 18Y. That is, the drive crankshaft 18X and the driven crankshaft 18Y have basically the same configuration, but the drive crankshaft 18X has an extending portion 18a extending downward from the driven crankshaft 18Y.
  • Each crankshaft 18 is provided with an eccentric shaft portion 18d eccentrically between main shaft portions 18b and 18c arranged on the same axis.
  • Each crankshaft 18 is rotatably held above and below the housing 2 at both main shaft portions 18b and 18c across the eccentric shaft portion 18d.
  • the upper main shaft portion 18 b is rotatably held on the upper wall of the housing 2 via the upper bearing 23, and the lower main shaft portion 18 c rotates on the lower wall of the housing 2 via the lower bearing 24. It is held freely.
  • the outer ring of the upper bearing 23 is fitted into the upper large-diameter hole of the stepped hole provided in the upper wall of the housing 2 from above and is held by a locking ring 25 provided in the opening of the large-diameter hole. Further, the inner ring of the upper bearing 23 is fitted and fixed to the main shaft portion 18 b above the crankshaft 18.
  • the outer ring of the lower bearing 24 is fitted into the lower large-diameter hole in the stepped hole provided in the lower wall of the housing 2 from below and is held by a retaining ring 26 provided in the opening of the large-diameter hole. Further, the inner ring of the lower bearing 24 is fitted into the main shaft portion 18c below the crankshaft 18, and is held by a stepped portion of the main shaft portion 18c and a retaining nut 27 screwed into the main shaft portion 18c.
  • the mounting cylinder 19 of the orbiting scroll 3 is held on the eccentric shaft portion 18d of the crankshaft 18 via the orbiting holding bearing 28.
  • the two swivel holding bearings 28 are used while being stacked one above the other.
  • the outer ring of the orbiting holding bearing 28 is fitted into the upper large-diameter hole of the stepped hole provided in the mounting cylinder 19 of the orbiting scroll 3 from above and is held by a retaining ring 29 provided at the opening of the large-diameter hole.
  • the inner ring of the swivel holding bearing 28 is fitted into the eccentric shaft portion 18d of the crankshaft 18, and is held by a stepped portion at the lower end portion of the eccentric shaft portion 18d and a retaining nut 30 screwed into the eccentric shaft portion 18d.
  • Each crankshaft 18 is provided with a weight balancer 31 for smooth rotation of the orbiting scroll 3.
  • weight balancers 31 are respectively provided at the lower end portion of the upper main shaft portion 18b and the upper end portion of the lower main shaft portion 18b.
  • Each fixed scroll 4 is provided with one or a plurality of plate-like fixed wraps 7 on one side of a disk-like end plate 20 perpendicular to the plate surface.
  • the upper fixed scroll 4 is provided with a fixed wrap 7 on the lower surface of the end plate 20, and the lower fixed scroll 4 is provided on the upper surface of the end plate 20.
  • a fixed wrap 7 is provided upward.
  • the fixed wrap 7 is provided in a number corresponding to the swirl wrap 5, and is formed to be curved in a spiral shape of an involute curve from the central portion of the end plate 20 toward the outer peripheral portion.
  • Each fixed wrap 7 is filled with a gap between the end plate 20 extending from the end plate 20 (the lower end portion of the upper fixed wrap 7 and the upper end portion of the lower fixed wrap 7) with the end plate 17 of the orbiting scroll 3.
  • a chip seal 32 is provided along the spiral so as to be detachable.
  • Each cylindrical scroll 4 is provided with a cylindrical outer peripheral wrap 33 so as to surround the fixed wrap 7.
  • the upper fixed scroll 4 is provided with an outer peripheral wrap 33 downward on the lower surface of the end plate 20, and the lower fixed scroll 4 is disposed on the upper surface of the end plate 20.
  • An outer peripheral wrap 33 is provided upward.
  • the height of the outer peripheral wrap 33 (extension dimension from the end plate 20) substantially corresponds to the height of the fixed wrap 7 (extension dimension from the end plate 20).
  • One or a plurality of annular external seals 34 are attached to and detached from the outer peripheral wraps 33 at the leading end portions extending from the end plate 20 (the lower end portion of the upper outer peripheral wrap 33 and the upper end portion of the lower outer peripheral wrap 33). It is possible to be provided along the circumferential direction.
  • Each fixed scroll 4 is detachably provided on the top and bottom of the housing 2 in a state where the fixed wrap 7 is engaged with the turning wrap 5.
  • the upper fixed scroll 4 is fixed to the upper surface of the upper flange 10 of the housing 2 in such a manner that the outer peripheral portion of the end plate 20 is overlapped, and is detachably fixed by a screw 35 (FIG. 1).
  • the lower fixed scroll 4 is fixed to the lower surface of the lower flange 10 of the housing 2 so that the outer peripheral portion of the end plate 20 is overlapped, and is detachably fixed by a screw 35 (FIG. 2).
  • each of the pair of fixed scrolls 4 is provided with a first opening 36 on the outer peripheral side and a second opening 37 in the center.
  • the second openings 37 shown above and below may be communicated with each other by making a through hole in the center of the substrate portion 12 of the orbiting scroll 3.
  • the drive crankshaft 18X is given a rotational driving force from its extension 18a (that is, power is input).
  • an output shaft of a motor (not shown) is directly connected to the extending portion 18a of the drive crankshaft 18X, that is, connected via a coupling.
  • the motor is provided at a position that does not obstruct the attachment / detachment of the fixed scroll 4 to / from the housing 2.
  • the drive crankshaft 18X When the scroll fluid machine 1 is used as a compressor or a blower, the drive crankshaft 18X may be rotated. Thereby, the turning scroll 3 can be turned with respect to the fixed scroll 4. At this time, it is sufficient to apply the rotational driving force to only one of the three crankshafts 18 (that is, the driving crankshaft 18X), and it is necessary to apply the rotational driving force to the remaining two (that is, the driven crankshaft 18Y). Absent.
  • the orbiting scroll 3 When the orbiting scroll 3 is revolved with respect to the fixed scroll 4, the fluid is sucked from the first opening 36, and the fluid is compressed between the orbiting wrap 5 and the fixed wrap 7, while the inner end from the outer end side of the spiral. It can be moved to the side and discharged from the second opening 37.
  • the orbiting scroll 3 is rotated by the fluid, and a rotational driving force is applied to the drive crankshaft 18X (that is, power is output).
  • the input shaft of the driven machine (machine driven by the expander) is directly connected to the extending portion 18a of the drive crankshaft 18X, that is, connected via a coupling.
  • the driven machine is provided at a position that does not hinder attachment / detachment of the fixed scroll 4 to / from the housing 2.
  • the fluid When using the scroll fluid machine 1 as an expander, the fluid may be allowed to flow from the second opening 37. Thereby, the orbiting scroll 3 can be swung by the force of the fluid and discharged from the first opening 36 while expanding. Further, the rotational driving force of the orbiting scroll 3 can be taken out from the drive crankshaft 18X.
  • the scroll fluid machine 1 of the present embodiment may be used by rotating the drive crankshaft 18X in the reverse direction by a motor, sucking fluid from the second opening 37, and discharging it to the first opening 36. .
  • the scroll fluid machine 1 of the present embodiment can be used as a compressor, an expander, a blower, a vacuum pump, or the like.
  • the fluid to be compressed or expanded is not particularly limited, and can correspond to various fluids such as air, steam, and refrigerant.
  • the orbiting scroll 3 has the orbiting wrap 5 disposed in the housing hole 6 of the housing 2 and is rotatably held in the housing 2 outside the housing hole 6.
  • the fixed scroll 4 is detachably provided on the flange 10 of the receiving hole 6 so that the fixed wrap 7 is disposed in the receiving hole 6 of the housing 2 and the receiving hole 6 of the housing 2 is closed.
  • the end plate 20 of the fixed scroll 4 is also accommodated in the accommodation hole 6, so that a compact configuration can be achieved.
  • a rotational driving force is applied to only one of the crankshafts 18 installed at three locations in the circumferential direction of the housing 2.
  • No synchronization mechanism is required. Since there is no rotation synchronization mechanism, there is no member that obstructs the attachment / detachment of the fixed scroll 4 to / from the accommodation hole 6 of the housing 2, and the attachment / detachment of the fixed scroll 4 to / from the housing 2 is easy.
  • the fixed scroll 4 can be easily detached from the housing 2 as shown in FIG. 4 without disassembling the bearing portion of the orbiting scroll 3 with respect to the housing 2.
  • the tip seal 21 of the swirl wrap 5, the tip seal 32 of the fixed wrap 7, and the external seal 34 of the outer peripheral wrap 33 can be easily replaced.
  • the fixed scroll 4 can be attached to and detached from the housing 2, but the orbiting scroll main body 14 can be attached to and detached from the orbiting scroll base 13.
  • the upper and lower bearing portions of the housing 2 require some disassembly in the illustrated example, the upper and lower orbiting scroll bodies 14 can be removed from the orbiting scroll base 13. Therefore, the upper and lower orbiting scroll main bodies 14 can be handled individually, and when the orbiting wrap 5 is defective, it is possible to replace the upper and lower orbiting scroll main bodies 14 in units of one sheet (that is, only one side of the upper and lower orbiting scroll main bodies 14).
  • the orbiting scroll base 13 and the orbiting scroll main body 14 are configured separately, the orbiting scroll base 13 and the orbiting scroll main body 14 are integrally formed. Compared to the case, the size during the surface treatment can be reduced, and the cost can be reduced.
  • the orbiting scroll main body 14 can be attached to and detached from the orbiting scroll base 13 through the housing hole 6 of the housing 2.
  • the outer diameter of the end plate 17 of the orbiting scroll body 14 is formed smaller than the inner diameter of the housing hole 6 of the housing 2 and further the inner diameter of the flange 10 of the housing hole 6. Therefore, after removing the fixed scroll 4 from the housing 2, the orbiting scroll body 14 can be further removed from the orbiting scroll base 13.
  • the work can be performed through the housing hole 6 of the housing 2, and the workability is further improved because the bearing portion is not attached or detached.
  • the scroll fluid machine 1 of the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate.
  • the orbiting wrap 5 is accommodated in the accommodation hole 6 of the housing 2 so that the orbiting wrap 5 can be pivoted, and the orbiting scroll 3 is held in the housing 2 so as to be pivotable.
  • other configurations can be changed as appropriate as long as they are detachably provided.
  • any one or more of the tip seal 21 of the turning wrap 5, the tip seal 32 of the fixed wrap 7, and the outer seal 34 of the outer peripheral wrap 33 may be omitted.
  • the fixed scroll 4 can be easily attached to and detached from the housing 2, the internal maintenance can be easily performed. Therefore, it is possible to easily carry out surface treatment of parts, correspondence to materials, elimination of foreign matter biting, internal cleaning, and the like.
  • the housing 2 is circular in plan view, but is not limited thereto, and may be triangular or other polygonal shapes.
  • the flange 10 was provided in the accommodation hole 6 of the housing 2, and the outer peripheral part of the end plate 20 of the fixed scroll 4 was piled up and attached to the flange 10, installation of the flange 10 is abbreviate
  • the outer peripheral portion of the end plate 20 of the fixed scroll 4 may be attached to the upper and lower surfaces of the housing 2 (the upper surface of the upper wall and the lower surface of the lower wall).
  • the fixed scroll 4 may be configured to be detachable with respect to the housing 2 using screws or the like.
  • the number of crankshafts 18 is three, but may be four or more. In that case, it is preferable that only one of them is the drive crankshaft 18X and the rest is the driven crankshaft 18Y.
  • the drive crankshaft 18X and the driven crankshaft 18Y may have the same configuration, and parts may be shared.
  • a configuration similar to that of the drive crankshaft 18X may be adopted as the driven crankshaft 18Y. Even in this case, a rotational driving force is applied only to the drive crankshaft 18X. In short, it is sufficient that at least three crankshafts 18 are provided, and only one of them is given a rotational driving force.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

An orbiting scroll (3) comprises spiral-shaped orbiting wraps (5) provided on both sides of a base plate section (12). A housing (2) is provided with a receiving hole (6) in which the orbiting wraps (5) are received so that the orbiting wraps (5) can orbit. On the outside of the receiving hole (6), the orbiting scroll (3) is held at three or more circumferential points of the outer periphery thereof by the housing (2) so that the orbiting scroll (3) can be orbited by a crankshaft (18). Stationary scrolls (4) each have a spiral stationary wrap (7) provided on one side of an end plate (20). The stationary scrolls (4) are removably mounted to the housing (2) so as to sandwich the orbiting scroll (3) while the stationary wraps (7) are engaged with the orbiting wraps (5).

Description

スクロール流体機械Scroll fluid machinery
　本発明は、圧縮機、膨張機またはブロワなどとして用いられるスクロール流体機械に関するものである。 The present invention relates to a scroll fluid machine used as a compressor, an expander or a blower.
　従来、下記特許文献１に開示されるスクロール圧縮機が知られている。このスクロール圧縮機は、一対の固定スクロール（１，２）、旋回スクロール（３）、駆動軸（５）および補助駆動軸（６）を備える。固定スクロール（１，２）は、鏡板（１ａ，２ａ）の片面に、渦巻き状の固定ラップ（１ｂ，２ｂ）が設けられている。旋回スクロール（３）は、鏡板（３ａ）の両面に、渦巻き状の旋回ラップ（３ｂ，３ｃ）が設けられている。固定ラップ（１ｂ，２ｂ）と旋回ラップ（３ｂ，３ｃ）とを噛み合わせた状態で、一対の固定スクロール（１，２）で旋回スクロール（３）が挟まれる。駆動軸（５）と補助駆動軸（６）とには、軸方向中途部に偏心軸部が設けられており、その偏心軸部に旋回スクロール（３）が軸受（１１ａ，１１ｂ）を介して保持される。駆動軸（５）の回転は、タイミングベルト（１７）を備えた回転同期機構を介して補助駆動軸（６）に伝達され、固定スクロール（１，２）に対し旋回スクロール（３）が旋回する。これに伴い、吸入口（２２）から気体を吸入し圧縮して、吐出口（１０）へ吐出する。 Conventionally, a scroll compressor disclosed in Patent Document 1 below is known. The scroll compressor includes a pair of fixed scrolls (1, 2), a turning scroll (3), a drive shaft (5), and an auxiliary drive shaft (6). The fixed scrolls (1, 2) are provided with spiral fixed wraps (1b, 2b) on one side of the end plates (1a, 2a). The orbiting scroll (3) is provided with spiral orbiting wraps (3b, 3c) on both sides of the end plate (3a). In a state where the fixed wrap (1b, 2b) and the orbiting wrap (3b, 3c) are engaged, the orbiting scroll (3) is sandwiched between the pair of fixed scrolls (1, 2). The drive shaft (5) and the auxiliary drive shaft (6) are each provided with an eccentric shaft portion in the middle in the axial direction, and the orbiting scroll (3) is interposed on the eccentric shaft portion via bearings (11a, 11b). Retained. The rotation of the drive shaft (5) is transmitted to the auxiliary drive shaft (6) through a rotation synchronization mechanism provided with a timing belt (17), and the orbiting scroll (3) rotates with respect to the fixed scrolls (1, 2). . Along with this, gas is sucked from the suction port (22), compressed, and discharged to the discharge port (10).
　なお、固定スクロール（１，２）の鏡板（１ａ，２ａ）から延出する固定ラップ（１ｂ，２ｂ）の先端部に、旋回スクロール（３）の鏡板（３ａ）との隙間を埋めるチップシール（１ｃ，２ｃ）が設けられる一方、旋回スクロール（３）の鏡板（３ａ）から延出する旋回ラップ（３ｂ，３ｃ）の先端部に、固定スクロール（１，２）の鏡板（１ａ，２ａ）との隙間を埋めるチップシール（３ｄ，３ｅ）が設けられる。 Note that a tip seal that fills a gap between the end of the fixed wrap (1b, 2b) extending from the end plate (1a, 2a) of the fixed scroll (1, 2) and the end plate (3a) of the orbiting scroll (3) ( 1c, 2c), while the end plate of the orbiting wrap (3b, 3c) extending from the end plate (3a) of the orbiting scroll (3) and the end plate (1a, 2a) of the fixed scroll (1, 2) Chip seals (3d, 3e) are provided to fill the gaps.
特許第３７５４２３７号公報Japanese Patent No. 3754237
　従来のスクロール流体機械の場合、内部のメンテナンスを行おうとすれば、固定スクロールに対する旋回スクロールの軸受部の着脱を伴う大掛かりな分解作業が必要であり、ユーザにおいて容易に作業することができない。従って、表面処理や素材に起因した部品の交換や再処理、異物の噛み込みの解消、内部の清掃などを容易に行うことができない。たとえば、固定ラップや旋回ラップに設けられるチップシールは、摺動により摩耗する消耗部品であり定期的な交換が必要であるが、このチップシールを容易に交換することができない。 In the case of a conventional scroll fluid machine, if an internal maintenance is to be performed, a large-scale disassembling operation involving attachment / detachment of the bearing portion of the orbiting scroll with respect to the fixed scroll is necessary, and the user cannot easily perform the operation. Therefore, parts cannot be easily replaced or reprocessed due to the surface treatment or the material, the biting of foreign matter can be eliminated, and the interior can be easily cleaned. For example, tip seals provided on fixed wraps and swirl wraps are consumable parts that wear due to sliding and require periodic replacement, but cannot be easily replaced.
　また、特許文献１に記載の発明のように、旋回スクロールの直径方向に対向した箇所に、駆動軸と補助駆動軸との二本の駆動軸を配置する構成では、駆動軸間を結んだ方向（特許文献１の図１の左右方向）の一方または他方へ旋回スクロールが最も移動した際、死点を生ずることになるため、前述した回転同期機構が必須となり、駆動軸だけでなく補助駆動軸にも回転駆動力を付与する必要がある。そして、これに伴い、旋回スクロールから固定スクロールを取り外すには、回転同期機構の分解も必要となり、内部のメンテナンスを一層困難としている。 Further, in the configuration in which two drive shafts of the drive shaft and the auxiliary drive shaft are arranged at locations facing the diameter direction of the orbiting scroll as in the invention described in Patent Document 1, the direction connecting the drive shafts When the orbiting scroll is moved most to one or the other (the left and right direction in FIG. 1 of Patent Document 1), a dead center is generated. Therefore, the rotation synchronization mechanism described above is essential, and not only the drive shaft but also the auxiliary drive shaft. Also, it is necessary to apply a rotational driving force. As a result, in order to remove the fixed scroll from the orbiting scroll, it is necessary to disassemble the rotation synchronization mechanism, making internal maintenance more difficult.
　本発明が解決しようとする課題は、大掛かりな分解を要することなく、容易に旋回スクロールから固定スクロールを取り外すことができ、それにより内部のメンテナンスが容易なスクロール流体機械を提供することにある。 The problem to be solved by the present invention is to provide a scroll fluid machine in which the fixed scroll can be easily detached from the orbiting scroll without requiring large-scale disassembly, and thereby the internal maintenance is easy.
　本発明は、前記課題を解決するためになされたもので、請求項１に記載の発明は、基板部の両面に渦巻き状の旋回ラップが設けられた旋回スクロールと、前記旋回ラップが旋回可能に収容される収容穴を備え、前記収容穴の軸線と垂直に前記基板部が配置され、前記基板部の外周部において前記旋回スクロールを周方向三箇所以上でクランク軸により旋回可能に保持するハウジングと、端板の片面に渦巻き状の固定ラップが設けられ、前記固定ラップを前記旋回ラップと噛み合わせて、前記旋回スクロールを挟むよう前記ハウジングに着脱可能に設けられる一対の固定スクロールとを備えることを特徴とするスクロール流体機械である。 The present invention has been made in order to solve the above-mentioned problems, and the invention according to claim 1 is characterized in that the orbiting scroll provided with spiral orbiting wraps on both surfaces of the substrate portion and the orbiting wrap can be orbited. A housing having a housing hole to be accommodated, wherein the substrate portion is disposed perpendicular to the axis of the housing hole, and the orbiting scroll is rotatably held by a crankshaft at three or more circumferential directions on the outer peripheral portion of the substrate portion; A spiral fixed wrap is provided on one side of the end plate, and the fixed wrap is engaged with the orbiting wrap, and a pair of fixed scrolls are provided detachably on the housing so as to sandwich the orbiting scroll. It is the scroll fluid machine characterized.
　請求項１に記載の発明によれば、旋回スクロールは、旋回ラップをハウジングの収容穴内に配置して、ハウジングに旋回可能に保持される。一方、固定スクロールは、ハウジングの収容穴を閉じるように、ハウジングに着脱可能に設けられる。従って、ハウジングに対する旋回スクロールの軸受部を分解することなく、ハウジングから固定スクロールを容易に取り外すことができ、内部のメンテナンスも容易に行える。また、旋回スクロールを周方向三箇所以上でクランク軸によりハウジングに保持するので、旋回スクロールの回転時に死点を生ずることがない。 According to the first aspect of the present invention, the orbiting scroll has the orbiting wrap disposed in the housing hole of the housing and is held in the housing so as to be orbitable. On the other hand, the fixed scroll is detachably provided on the housing so as to close the housing hole of the housing. Therefore, the fixed scroll can be easily detached from the housing without disassembling the bearing portion of the orbiting scroll with respect to the housing, and the internal maintenance can be easily performed. Further, since the orbiting scroll is held in the housing by the crankshaft at three or more locations in the circumferential direction, no dead point is generated when the orbiting scroll is rotated.
　請求項２に記載の発明は、前記旋回ラップには、前記基板部からの延出先端部に、前記旋回ラップの渦巻きに沿って、前記固定スクロールの端板との隙間を埋めるチップシールが着脱可能に設けられ、前記固定ラップには、前記端板からの延出先端部に、前記固定ラップの渦巻きに沿って、前記旋回スクロールの基板部との隙間を埋めるチップシールが着脱可能に設けられることを特徴とする請求項１に記載のスクロール流体機械である。 According to a second aspect of the present invention, a tip seal that fills a gap with the end plate of the fixed scroll along the spiral of the swirl wrap is attached to and detached from the swivel wrap along the spiral of the swirl wrap. The fixed wrap is detachably provided with a tip seal extending from the end plate along the spiral of the fixed wrap so as to fill a gap with the substrate portion of the orbiting scroll. The scroll fluid machine according to claim 1.
　請求項２に記載の発明によれば、ハウジングに対する旋回スクロールの軸受部を分解することなく、ハウジングから固定スクロールを容易に取り外すことができ、固定ラップや旋回ラップの各チップシールの交換が容易に行える。 According to the second aspect of the present invention, the fixed scroll can be easily removed from the housing without disassembling the bearing portion of the orbiting scroll with respect to the housing, and each tip seal of the fixed wrap and the orbiting wrap can be easily replaced. Yes.
　請求項３に記載の発明は、前記固定スクロールの端板に、前記固定ラップを取り囲むよう円筒状の外周ラップが設けられ、前記外周ラップには、前記端板からの延出先端部に、前記外周ラップの周方向に沿って、前記旋回スクロールの基板部との隙間を埋める外部シールが着脱可能に設けられることを特徴とする請求項２に記載のスクロール流体機械である。 According to a third aspect of the present invention, a cylindrical outer peripheral wrap is provided on an end plate of the fixed scroll so as to surround the fixed wrap, and the outer peripheral wrap is provided with a leading end extending from the end plate. 3. The scroll fluid machine according to claim 2, wherein an external seal that fills a gap with the substrate portion of the orbiting scroll is detachably provided along a circumferential direction of the outer peripheral wrap.
　請求項３に記載の発明によれば、ハウジングに対する旋回スクロールの軸受部を分解することなく、ハウジングから固定スクロールを容易に取り外すことができ、外周ラップの外部シールの交換が容易に行える。 According to the invention described in claim 3, the fixed scroll can be easily removed from the housing without disassembling the bearing portion of the orbiting scroll with respect to the housing, and the outer seal of the outer peripheral wrap can be easily replaced.
　請求項４に記載の発明は、前記ハウジングには、前記収容穴の軸方向中途部に、一対のフランジが、前記収容穴の軸方向に離隔すると共に前記収容穴の内側へ延出して形成され、前記旋回スクロールの外周部は、前記一対のフランジ間の開口を介して、前記ハウジングの前記収容穴よりも外側において、前記クランク軸により前記固定スクロールに対し旋回可能に保持され、前記ハウジングのフランジに前記固定スクロールの端板が重ね合わされて着脱可能に固定され、前記ハウジングの周方向三箇所以上に設置されるクランク軸の内、一本にのみ回転駆動力が与えられることを特徴とする請求項１～３のいずれか１項に記載のスクロール流体機械である。 According to a fourth aspect of the present invention, in the housing, a pair of flanges are formed in the middle of the housing hole in the axial direction so as to be separated from each other in the axial direction of the housing hole and extend to the inside of the housing hole. The outer peripheral portion of the orbiting scroll is held by the crankshaft so as to be orbitable with respect to the fixed scroll outside the housing hole of the housing through an opening between the pair of flanges, and the flange of the housing The end plates of the fixed scroll are overlapped and fixed detachably, and a rotational driving force is given to only one of the crankshafts installed at three or more locations in the circumferential direction of the housing. Item 4. The scroll fluid machine according to any one of Items 1 to 3.
　請求項４に記載の発明によれば、ハウジングの収容穴に設けたフランジに対し、固定スクロールを着脱することができる。フランジは、収容穴の軸方向中途部に設けられるので、収容穴内に固定スクロールの端板を配置して取り付けることができ、コンパクトに組み立てることができる。また、ハウジングの周方向三箇所以上に設置されるクランク軸の内、一本にのみ回転駆動力が与えられ、回転同期機構が不要である。つまり、圧縮機やブロワとして用いる場合でも、回転同期機構を用いて全てのクランク軸に回転駆動力を与える必要はなく、一本のクランク軸にのみ回転駆動力が与えられる（つまり入力される）だけでよい。一方、膨張機として用いる場合でも、流体により旋回スクロールを回転させて、一本のクランク軸にのみ回転駆動力が与えられる（つまり出力される）構成とできる。いずれにしても、回転同期機構を設置する必要がなく、回転同期機構のない分だけ構成が簡易となるだけでなく、ハウジングに対する固定スクロールの着脱も容易となる。 According to the invention of claim 4, the fixed scroll can be attached to and detached from the flange provided in the housing hole of the housing. Since the flange is provided in the middle of the receiving hole in the axial direction, the end plate of the fixed scroll can be disposed and attached in the receiving hole, and can be assembled compactly. Further, only one of the crankshafts installed at three or more locations in the circumferential direction of the housing is given a rotational driving force, and a rotation synchronization mechanism is unnecessary. That is, even when used as a compressor or a blower, it is not necessary to apply a rotational driving force to all the crankshafts using the rotation synchronization mechanism, and a rotational driving force is applied to only one crankshaft (that is, input). Just do it. On the other hand, even when used as an expander, the orbiting scroll can be rotated by a fluid, and a rotational driving force can be applied (that is, output) to only one crankshaft. In any case, it is not necessary to install a rotation synchronization mechanism, and not only the configuration is simplified by the absence of the rotation synchronization mechanism, but also the fixed scroll can be easily attached to and detached from the housing.
　さらに、請求項５に記載の発明は、前記旋回スクロールは、前記クランク軸を介して前記ハウジングに保持される旋回スクロールベースと、前記旋回スクロールベースの中央部両面に設けられる旋回スクロール本体とからなり、前記旋回スクロール本体は、前記旋回ラップを備えると共に、前記旋回スクロールベースに対し着脱可能に設けられることを特徴とする請求項１～４のいずれか１項に記載のスクロール流体機械である。 Further, in the invention described in claim 5, the orbiting scroll includes an orbiting scroll base that is held by the housing via the crankshaft, and an orbiting scroll body that is provided on both sides of the center portion of the orbiting scroll base. The scroll fluid machine according to any one of claims 1 to 4, wherein the orbiting scroll main body includes the orbiting wrap and is detachably attached to the orbiting scroll base.
　請求項５に記載の発明によれば、ハウジングに軸受保持された旋回スクロールベースに対し、旋回ラップを備える旋回スクロール本体が着脱可能であるから、旋回スクロールベースから旋回スクロール本体を取り外すことで、旋回スクロール本体のメンテナンスが容易となる。つまり、一対の旋回スクロール本体を、一つずつ個別に取り扱うことができるので、メンテナンスが容易となる。 According to the fifth aspect of the present invention, since the orbiting scroll main body having the orbiting wrap is detachable from the orbiting scroll base supported by the housing, the orbiting scroll main body is removed from the orbiting scroll base. Maintenance of the scroll body is facilitated. That is, since a pair of orbiting scroll bodies can be handled individually one by one, maintenance is facilitated.
　本発明によれば、大掛かりな分解を要することなく、容易に旋回スクロールから固定スクロールを取り外すことができ、それにより内部のメンテナンスが容易なスクロール流体機械を実現することができる。 According to the present invention, it is possible to easily remove the fixed scroll from the orbiting scroll without requiring extensive disassembly, thereby realizing a scroll fluid machine with easy internal maintenance.
本発明のスクロール流体機械の一実施例を示す概略平面図である。It is a schematic plan view which shows one Example of the scroll fluid machine of this invention. 図１のスクロール流体機械の底面図である。It is a bottom view of the scroll fluid machine of FIG. 図１におけるIII－III断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 図３の部分拡大図であり、ハウジングから固定スクロールを取り外した状態を示している。FIG. 4 is a partially enlarged view of FIG. 3, showing a state in which the fixed scroll is removed from the housing.
　以下、本発明の具体的実施例を図面に基づいて詳細に説明する。 Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
　図１から図４は、本発明のスクロール流体機械１の一実施例を示す概略図であり、図１は平面図、図２は底面図、図３は図１におけるIII－III断面図、図４は図３の部分拡大図であり一部を分解して示している。なお、以下において、説明の便宜上、図３（厳密にはIII－III断面図であるからその左半分または右半分）における上下および左右として方向を述べることがあるが、この方向はスクロール流体機械１の姿勢を限定する趣旨ではない。 1 to 4 are schematic views showing an embodiment of a scroll fluid machine 1 according to the present invention. FIG. 1 is a plan view, FIG. 2 is a bottom view, and FIG. 3 is a sectional view taken along line III-III in FIG. 4 is a partially enlarged view of FIG. In the following, for convenience of explanation, directions may be described as up and down and left and right in FIG. 3 (strictly, the left half or right half is a cross-sectional view of III-III). It is not intended to limit the attitude.
　図３に示すように、本実施例のスクロール流体機械１は、ハウジング２と、このハウジング２に旋回可能に保持される旋回スクロール３と、前記ハウジング２に着脱可能に固定される一対の固定スクロール４とを備える。 As shown in FIG. 3, the scroll fluid machine 1 of the present embodiment includes a housing 2, a turning scroll 3 that is rotatably held in the housing 2, and a pair of fixed scrolls that are detachably fixed to the housing 2. 4.
　ハウジング２は、本実施例では、厚肉の短円筒状に形成され、その中央の貫通穴は、旋回スクロール３の旋回ラップ５を旋回可能に収容する収容穴６とされる。この収容穴６には、旋回スクロール３の旋回ラップ５の他、固定スクロール４の固定ラップ７も収容される。 In this embodiment, the housing 2 is formed into a thick short cylindrical shape, and the central through-hole is an accommodation hole 6 that accommodates the orbiting wrap 5 of the orbiting scroll 3 so as to be orbitable. In addition to the orbiting wrap 5 of the orbiting scroll 3, the accommodation hole 6 also accommodates the fixed wrap 7 of the fixed scroll 4.
　ハウジング２の周側壁には、軸方向中途部の内周面に開口して中空部８が周方向に沿って形成されると共に、内周面には中空部８の開口９を挟んだ軸方向両側にフランジ１０が径方向内側へ延出して形成されている。より具体的には、ハウジング２の周側壁には、周方向に沿って連続的に中空部８が形成されており、その中空部８は、周側壁の内周面の上下方向中央部に、周方向に沿って連続的に開口しており、その開口９を挟んだ上下に、円環状の板状のフランジ１０が径方向内側へ延出して一体形成されている。 On the peripheral side wall of the housing 2, a hollow portion 8 is formed along the circumferential direction so as to open to the inner peripheral surface of the axially intermediate portion, and the axial direction sandwiching the opening 9 of the hollow portion 8 on the inner peripheral surface Flange 10 is formed on both sides so as to extend radially inward. More specifically, a hollow portion 8 is continuously formed in the circumferential side wall of the housing 2 along the circumferential direction, and the hollow portion 8 is formed at the center in the vertical direction of the inner circumferential surface of the circumferential side wall. It opens continuously along the circumferential direction, and an annular plate-like flange 10 is integrally formed so as to extend radially inward above and below the opening 9.
　なお、本実施例では、ハウジング２は、上下二つの部材から構成されている。具体的には、ハウジング２は、図３において、上方に配置される上ハウジング材２Ａと、下方に配置される下ハウジング材２Ｂとから構成されている。前述した上下一対のフランジ１０の内、上方のフランジ１０は上ハウジング材２Ａに設けられ、下方のフランジ１０は下ハウジング材２Ｂに設けられている。両ハウジング材２Ａ，２Ｂは、外周部においてネジ１１（図１）により着脱可能に一体化される。 In this embodiment, the housing 2 is composed of two upper and lower members. Specifically, in FIG. 3, the housing 2 is composed of an upper housing material 2 </ b> A disposed above and a lower housing material 2 </ b> B disposed below. Of the pair of upper and lower flanges 10 described above, the upper flange 10 is provided on the upper housing member 2A, and the lower flange 10 is provided on the lower housing member 2B. Both housing materials 2A and 2B are detachably integrated with screws 11 (FIG. 1) at the outer periphery.
　旋回スクロール３は、円板状の基板部１２の両面に、渦巻き状の旋回ラップ５が設けられて構成される。本実施例では、旋回スクロール３は、ハウジング２に旋回可能に保持される旋回スクロールベース１３と、その旋回スクロールベース１３の中央部の上下に固定される一対の旋回スクロール本体１４とから構成される。但し、場合により、旋回スクロールベース１３は、一対の旋回スクロール本体１４の内の一方または双方と一体形成されてもよい。 The orbiting scroll 3 is configured by providing spiral orbiting wraps 5 on both surfaces of a disk-shaped substrate portion 12. In the present embodiment, the orbiting scroll 3 includes an orbiting scroll base 13 that is rotatably held in the housing 2 and a pair of orbiting scroll bodies 14 that are fixed above and below the central portion of the orbiting scroll base 13. . However, in some cases, the orbiting scroll base 13 may be integrally formed with one or both of the pair of orbiting scroll bodies 14.
　旋回スクロールベース１３は、円環状の板状部１５を備え、その中央部の丸穴１６は、上下両面において拡径されている。そして、その拡径穴１６ａには、旋回スクロール本体１４の端板１７がはめ込まれて固定される。 The orbiting scroll base 13 includes an annular plate-like portion 15, and the center round hole 16 is enlarged in both upper and lower surfaces. Then, the end plate 17 of the orbiting scroll body 14 is fitted and fixed in the enlarged diameter hole 16a.
　円環状の板状部１５の外周部には、周方向等間隔の三箇所に、クランク軸１８への取付筒１９が一体形成されている。取付筒１９は、軸線を上下方向に沿って配置されている。取付筒１９の上下方向寸法は、板状部１５の上下方向寸法（厚さ）よりも大きく形成されている。 On the outer peripheral portion of the annular plate-shaped portion 15, attachment cylinders 19 to the crankshaft 18 are integrally formed at three circumferentially equal intervals. The mounting cylinder 19 is arranged with its axis line along the vertical direction. The vertical dimension of the mounting cylinder 19 is formed larger than the vertical dimension (thickness) of the plate-like portion 15.
　各旋回スクロール本体１４は、円板状の端板１７の片面に、その板面と垂直に、一または複数の板状の旋回ラップ５が設けられている。具体的には、図３において、上側の旋回スクロール本体１４は、端板１７の上面に、上方へ向けて旋回ラップ５が設けられており、下側の旋回スクロール本体１４は、端板１７の下面に、下方へ向けて旋回ラップ５が設けられている。この際、各旋回ラップ５は、端板１７の中央部から外周部へ向けて、インボリュート曲線の渦巻き状に湾曲して形成されている。各旋回ラップ５には、端板１７からの延出先端部（上側の旋回ラップ５の上端部、下側の旋回ラップ５の下端部）に、固定スクロール４の端板２０との隙間を埋めるためのチップシール２１が、着脱可能に、渦巻きに沿って設けられている。 Each orbiting scroll main body 14 is provided with one or a plurality of plate-like orbiting wraps 5 on one side of a disk-like end plate 17 perpendicular to the plate surface. Specifically, in FIG. 3, the upper orbiting scroll body 14 is provided with the orbiting wrap 5 upward on the upper surface of the end plate 17, and the lower orbiting scroll body 14 includes the end plate 17. A swirl wrap 5 is provided on the lower surface facing downward. At this time, each swirl wrap 5 is formed to be curved in a spiral shape of an involute curve from the central portion of the end plate 17 toward the outer peripheral portion. In each orbiting wrap 5, the gap between the fixed scroll 4 and the end plate 20 is filled in the leading end portion extending from the end plate 17 (the upper end portion of the upper orbiting wrap 5 and the lower end portion of the lower orbiting wrap 5). A tip seal 21 is provided along the spiral so as to be detachable.
　各旋回スクロール本体１４は、その端板１７が、旋回スクロールベース１３の拡径穴１６ａにはめ込まれて、ネジ（図示省略）により旋回スクロールベース１３に着脱可能に固定される。これにより、旋回スクロールベース１３の板状部１５と旋回スクロール本体１４の端板１７とが一体化され、旋回スクロール３の基板部１２を構成する。そして、旋回スクロール３は、その基板部１２の両面に、旋回ラップ５が設けられた形状となる。なお、上下の旋回スクロール本体１４の端板１７間には、径方向中央部に円筒状のスペーサ２２が設けられ、各旋回スクロール本体１４の撓みが防止される。 The end plate 17 of each orbiting scroll main body 14 is fitted in the diameter-enlarged hole 16a of the orbiting scroll base 13, and is fixed to the orbiting scroll base 13 by screws (not shown). As a result, the plate-like portion 15 of the orbiting scroll base 13 and the end plate 17 of the orbiting scroll main body 14 are integrated to constitute the substrate portion 12 of the orbiting scroll 3. And the turning scroll 3 becomes a shape by which the turning wrap 5 was provided in both surfaces of the board | substrate part 12. As shown in FIG. A cylindrical spacer 22 is provided between the end plates 17 of the upper and lower orbiting scroll bodies 14 at the center in the radial direction, and the bending of each orbiting scroll body 14 is prevented.
　旋回スクロール３は、ハウジング２の収容穴６に旋回ラップ５を配置した状態で、収容穴６の軸線と垂直に基板部１２が配置される。この際、基板部１２の外周部は、ハウジング２のフランジ１０間の開口９を介して、収容穴６より外方へ延出する。そして、旋回スクロール３は、周方向等間隔の三箇所に設けた取付筒１９において、クランク軸１８を介してハウジング２に旋回可能に保持される。図１および図２に示すように、クランク軸１８は、ハウジング２の周方向等間隔の三箇所に設けられる。図３に示すように、各クランク軸１８は、その軸線を上下方向に沿って配置される。この際、各クランク軸１８は、ハウジング２の中空部８を上下に貫通するよう設けられる。 In the orbiting scroll 3, the substrate portion 12 is arranged perpendicular to the axis of the accommodation hole 6 in a state where the orbiting wrap 5 is arranged in the accommodation hole 6 of the housing 2. At this time, the outer peripheral portion of the substrate portion 12 extends outward from the accommodation hole 6 through the opening 9 between the flanges 10 of the housing 2. And the orbiting scroll 3 is hold | maintained by the housing 2 via the crankshaft 18 so that turning is possible in the attachment cylinder 19 provided in three places of the circumferential direction equal intervals. As shown in FIG. 1 and FIG. 2, the crankshaft 18 is provided at three locations at equal intervals in the circumferential direction of the housing 2. As shown in FIG. 3, each crankshaft 18 is arranged along its vertical direction along its axis. At this time, each crankshaft 18 is provided so as to vertically penetrate the hollow portion 8 of the housing 2.
　三本のクランク軸１８の内、一本は、回転駆動力を与えられる駆動クランク軸１８Ｘとされ、残り二本は、そのような回転駆動力を与えられない従動クランク軸１８Ｙとされる。図３において、左側に示される一本が駆動クランク軸１８Ｘとされ、残り二本が従動クランク軸１８Ｙとされる。 Of the three crankshafts 18, one is a drive crankshaft 18X to which a rotational driving force is applied, and the remaining two are driven crankshafts 18Y to which such a rotational driving force is not applied. In FIG. 3, one shown on the left side is the drive crankshaft 18X, and the remaining two are the driven crankshaft 18Y.
　駆動クランク軸１８Ｘは、従動クランク軸１８Ｙよりも軸方向一方（図３における下方）へ延出している。つまり、駆動クランク軸１８Ｘと従動クランク軸１８Ｙとは、基本的には同一の構成であるが、駆動クランク軸１８Ｘは従動クランク軸１８Ｙよりも下方への延出部１８ａを有する。 The drive crankshaft 18X extends in the axial direction (downward in FIG. 3) from the driven crankshaft 18Y. That is, the drive crankshaft 18X and the driven crankshaft 18Y have basically the same configuration, but the drive crankshaft 18X has an extending portion 18a extending downward from the driven crankshaft 18Y.
　各クランク軸１８は、同一軸線上に配置された主軸部１８ｂ，１８ｃ間に、偏心軸部１８ｄが偏心して設けられている。各クランク軸１８は、偏心軸部１８ｄを挟んだ両側の主軸部１８ｂ，１８ｃにおいて、ハウジング２の上下に回転自在に保持される。本実施例では、上方の主軸部１８ｂは、上軸受２３を介してハウジング２の上壁に回転自在に保持され、下方の主軸部１８ｃは、下軸受２４を介してハウジング２の下壁に回転自在に保持される。 Each crankshaft 18 is provided with an eccentric shaft portion 18d eccentrically between main shaft portions 18b and 18c arranged on the same axis. Each crankshaft 18 is rotatably held above and below the housing 2 at both main shaft portions 18b and 18c across the eccentric shaft portion 18d. In the present embodiment, the upper main shaft portion 18 b is rotatably held on the upper wall of the housing 2 via the upper bearing 23, and the lower main shaft portion 18 c rotates on the lower wall of the housing 2 via the lower bearing 24. It is held freely.
　上軸受２３の外輪は、ハウジング２の上壁に設けた段付き穴の内、上方の大径穴に上方からはめ込まれ、大径穴の開口部に設けられる係止リング２５により保持される。また、上軸受２３の内輪は、クランク軸１８の上方の主軸部１８ｂにはめ込まれて固定される。 The outer ring of the upper bearing 23 is fitted into the upper large-diameter hole of the stepped hole provided in the upper wall of the housing 2 from above and is held by a locking ring 25 provided in the opening of the large-diameter hole. Further, the inner ring of the upper bearing 23 is fitted and fixed to the main shaft portion 18 b above the crankshaft 18.
　下軸受２４の外輪は、ハウジング２の下壁に設けた段付き穴の内、下方の大径穴に下方からはめ込まれ、大径穴の開口部に設けられる留めリング２６により保持される。また、下軸受２４の内輪は、クランク軸１８の下方の主軸部１８ｃにはめ込まれて、主軸部１８ｃの段部と主軸部１８ｃにねじ込まれる留めナット２７とにより保持される。 The outer ring of the lower bearing 24 is fitted into the lower large-diameter hole in the stepped hole provided in the lower wall of the housing 2 from below and is held by a retaining ring 26 provided in the opening of the large-diameter hole. Further, the inner ring of the lower bearing 24 is fitted into the main shaft portion 18c below the crankshaft 18, and is held by a stepped portion of the main shaft portion 18c and a retaining nut 27 screwed into the main shaft portion 18c.
　クランク軸１８の偏心軸部１８ｄには、旋回保持軸受２８を介して旋回スクロール３の取付筒１９が保持される。本実施例では、二つの旋回保持軸受２８が上下に重ねられて用いられる。旋回保持軸受２８の外輪は、旋回スクロール３の取付筒１９に設けた段付き穴の内、上方の大径穴に上方からはめ込まれ、大径穴の開口部に設けられる留めリング２９により保持される。また、旋回保持軸受２８の内輪は、クランク軸１８の偏心軸部１８ｄにはめ込まれて、偏心軸部１８ｄの下端部の段部と偏心軸部１８ｄにねじ込まれる留めナット３０とにより保持される。 The mounting cylinder 19 of the orbiting scroll 3 is held on the eccentric shaft portion 18d of the crankshaft 18 via the orbiting holding bearing 28. In the present embodiment, the two swivel holding bearings 28 are used while being stacked one above the other. The outer ring of the orbiting holding bearing 28 is fitted into the upper large-diameter hole of the stepped hole provided in the mounting cylinder 19 of the orbiting scroll 3 from above and is held by a retaining ring 29 provided at the opening of the large-diameter hole. The Further, the inner ring of the swivel holding bearing 28 is fitted into the eccentric shaft portion 18d of the crankshaft 18, and is held by a stepped portion at the lower end portion of the eccentric shaft portion 18d and a retaining nut 30 screwed into the eccentric shaft portion 18d.
　各クランク軸１８には、旋回スクロール３の円滑な回転のために、ウェイトバランサ３１が設けられる。本実施例では、上側の主軸部１８ｂの下端部と、下側の主軸部１８ｂの上端部とに、それぞれウェイトバランサ３１が設けられる。 Each crankshaft 18 is provided with a weight balancer 31 for smooth rotation of the orbiting scroll 3. In the present embodiment, weight balancers 31 are respectively provided at the lower end portion of the upper main shaft portion 18b and the upper end portion of the lower main shaft portion 18b.
　各固定スクロール４は、円板状の端板２０の片面に、その板面と垂直に、一または複数の板状の固定ラップ７が設けられている。具体的には、図３において、上側の固定スクロール４は、端板２０の下面に、下方へ向けて固定ラップ７が設けられており、下側の固定スクロール４は、端板２０の上面に、上方へ向けて固定ラップ７が設けられている。この際、固定ラップ７は、旋回ラップ５と対応した個数だけ設けられ、端板２０の中央部から外周部へ向けて、インボリュート曲線の渦巻き状に湾曲して形成されている。各固定ラップ７には、端板２０からの延出先端部（上側の固定ラップ７の下端部、下側の固定ラップ７の上端部）に、旋回スクロール３の端板１７との隙間を埋めるためのチップシール３２が、着脱可能に、渦巻きに沿って設けられている。 Each fixed scroll 4 is provided with one or a plurality of plate-like fixed wraps 7 on one side of a disk-like end plate 20 perpendicular to the plate surface. Specifically, in FIG. 3, the upper fixed scroll 4 is provided with a fixed wrap 7 on the lower surface of the end plate 20, and the lower fixed scroll 4 is provided on the upper surface of the end plate 20. A fixed wrap 7 is provided upward. At this time, the fixed wrap 7 is provided in a number corresponding to the swirl wrap 5, and is formed to be curved in a spiral shape of an involute curve from the central portion of the end plate 20 toward the outer peripheral portion. Each fixed wrap 7 is filled with a gap between the end plate 20 extending from the end plate 20 (the lower end portion of the upper fixed wrap 7 and the upper end portion of the lower fixed wrap 7) with the end plate 17 of the orbiting scroll 3. A chip seal 32 is provided along the spiral so as to be detachable.
　各固定スクロール４には、固定ラップ７を取り囲むように、円筒状の外周ラップ３３が設けられている。具体的には、図３において、上側の固定スクロール４は、端板２０の下面に、下方へ向けて外周ラップ３３が設けられており、下側の固定スクロール４は、端板２０の上面に、上方へ向けて外周ラップ３３が設けられている。外周ラップ３３の高さ（端板２０からの延出寸法）は、固定ラップ７の高さ（端板２０からの延出寸法）とほぼ対応している。各外周ラップ３３には、端板２０からの延出先端部（上側の外周ラップ３３の下端部、下側の外周ラップ３３の上端部）に、一または複数の環状の外部シール３４が、着脱可能に、周方向に沿って設けられている。 Each cylindrical scroll 4 is provided with a cylindrical outer peripheral wrap 33 so as to surround the fixed wrap 7. Specifically, in FIG. 3, the upper fixed scroll 4 is provided with an outer peripheral wrap 33 downward on the lower surface of the end plate 20, and the lower fixed scroll 4 is disposed on the upper surface of the end plate 20. An outer peripheral wrap 33 is provided upward. The height of the outer peripheral wrap 33 (extension dimension from the end plate 20) substantially corresponds to the height of the fixed wrap 7 (extension dimension from the end plate 20). One or a plurality of annular external seals 34 are attached to and detached from the outer peripheral wraps 33 at the leading end portions extending from the end plate 20 (the lower end portion of the upper outer peripheral wrap 33 and the upper end portion of the lower outer peripheral wrap 33). It is possible to be provided along the circumferential direction.
　各固定スクロール４は、固定ラップ７を旋回ラップ５と噛み合わせた状態で、ハウジング２の上下に着脱可能に設けられる。具体的には、上側の固定スクロール４は、ハウジング２の上側のフランジ１０の上面に、端板２０の外周部が重ね合わされて、ネジ３５（図１）により着脱可能に固定される。また、下側の固定スクロール４は、ハウジング２の下側のフランジ１０の下面に、端板２０の外周部が重ね合わされて、ネジ３５（図２）により着脱可能に固定される。 Each fixed scroll 4 is detachably provided on the top and bottom of the housing 2 in a state where the fixed wrap 7 is engaged with the turning wrap 5. Specifically, the upper fixed scroll 4 is fixed to the upper surface of the upper flange 10 of the housing 2 in such a manner that the outer peripheral portion of the end plate 20 is overlapped, and is detachably fixed by a screw 35 (FIG. 1). Further, the lower fixed scroll 4 is fixed to the lower surface of the lower flange 10 of the housing 2 so that the outer peripheral portion of the end plate 20 is overlapped, and is detachably fixed by a screw 35 (FIG. 2).
　一対の固定スクロール４には、図１および図２に示すように、それぞれ外周側に第一開口３６が設けられる一方、中央部に第二開口３７が設けられている。なお、図３において、上下に示される第二開口３７は、場合により、旋回スクロール３の基板部１２の中央に貫通穴をあけて互いに連通させてもよい。 As shown in FIGS. 1 and 2, each of the pair of fixed scrolls 4 is provided with a first opening 36 on the outer peripheral side and a second opening 37 in the center. In FIG. 3, the second openings 37 shown above and below may be communicated with each other by making a through hole in the center of the substrate portion 12 of the orbiting scroll 3.
　本実施例のスクロール流体機械１を圧縮機またはブロワとして用いる場合、駆動クランク軸１８Ｘは、その延出部１８ａから回転駆動力を与えられる（つまり動力が入力される）。たとえば、駆動クランク軸１８Ｘの延出部１８ａには、モータ（図示省略）の出力軸が直結、つまりカップリングを介して接続される。なお、モータは、ハウジング２に対する固定スクロール４の着脱を阻害しない位置に設けられる。 When the scroll fluid machine 1 of the present embodiment is used as a compressor or a blower, the drive crankshaft 18X is given a rotational driving force from its extension 18a (that is, power is input). For example, an output shaft of a motor (not shown) is directly connected to the extending portion 18a of the drive crankshaft 18X, that is, connected via a coupling. The motor is provided at a position that does not obstruct the attachment / detachment of the fixed scroll 4 to / from the housing 2.
　スクロール流体機械１を圧縮機またはブロワとして用いる場合、駆動クランク軸１８Ｘを回転させればよい。これにより、固定スクロール４に対し旋回スクロール３を旋回させることができる。この際、三本のクランク軸１８の内、一本（つまり駆動クランク軸１８Ｘ）にのみ回転駆動力を付与すれば足り、残り二本（つまり従動クランク軸１８Ｙ）に回転駆動力を与える必要はない。固定スクロール４に対し旋回スクロール３を旋回させると、第一開口３６から流体を吸入し、その流体を旋回ラップ５と固定ラップ７との間で圧縮しながら、その渦巻きの外端側から内端側へ移動させ、第二開口３７から吐出させることができる。 When the scroll fluid machine 1 is used as a compressor or a blower, the drive crankshaft 18X may be rotated. Thereby, the turning scroll 3 can be turned with respect to the fixed scroll 4. At this time, it is sufficient to apply the rotational driving force to only one of the three crankshafts 18 (that is, the driving crankshaft 18X), and it is necessary to apply the rotational driving force to the remaining two (that is, the driven crankshaft 18Y). Absent. When the orbiting scroll 3 is revolved with respect to the fixed scroll 4, the fluid is sucked from the first opening 36, and the fluid is compressed between the orbiting wrap 5 and the fixed wrap 7, while the inner end from the outer end side of the spiral. It can be moved to the side and discharged from the second opening 37.
　一方、スクロール流体機械１を膨張機として用いる場合、流体により旋回スクロール３を回転させて、駆動クランク軸１８Ｘに回転駆動力が与えられる（つまり動力が出力される）。たとえば、駆動クランク軸１８Ｘの延出部１８ａには、被動機（膨張機により駆動される機械）の入力軸が直結、つまりカップリングを介して接続される。なお、被動機は、ハウジング２に対する固定スクロール４の着脱を阻害しない位置に設けられる。 On the other hand, when the scroll fluid machine 1 is used as an expander, the orbiting scroll 3 is rotated by the fluid, and a rotational driving force is applied to the drive crankshaft 18X (that is, power is output). For example, the input shaft of the driven machine (machine driven by the expander) is directly connected to the extending portion 18a of the drive crankshaft 18X, that is, connected via a coupling. The driven machine is provided at a position that does not hinder attachment / detachment of the fixed scroll 4 to / from the housing 2.
　スクロール流体機械１を膨張機として用いる場合、流体を第二開口３７から流入させればよい。これにより、流体の力で旋回スクロール３が旋回し、膨張しながら第一開口３６から吐出させることができる。また、旋回スクロール３の回転駆動力を駆動クランク軸１８Ｘから取り出すことができる。 When using the scroll fluid machine 1 as an expander, the fluid may be allowed to flow from the second opening 37. Thereby, the orbiting scroll 3 can be swung by the force of the fluid and discharged from the first opening 36 while expanding. Further, the rotational driving force of the orbiting scroll 3 can be taken out from the drive crankshaft 18X.
　その他、本実施例のスクロール流体機械１は、駆動クランク軸１８Ｘをモータにより逆方向へ回転させて、流体を第二開口３７から吸入して、第一開口３６へ吐出させて使用してもよい。 In addition, the scroll fluid machine 1 of the present embodiment may be used by rotating the drive crankshaft 18X in the reverse direction by a motor, sucking fluid from the second opening 37, and discharging it to the first opening 36. .
　このようにして、本実施例のスクロール流体機械１は、圧縮機、膨張機、ブロワ、真空ポンプなどとして用いることができる。なお、圧縮または膨張等させる流体は特に問わず、空気、蒸気、冷媒など、各種の流体に対応することができる。 Thus, the scroll fluid machine 1 of the present embodiment can be used as a compressor, an expander, a blower, a vacuum pump, or the like. The fluid to be compressed or expanded is not particularly limited, and can correspond to various fluids such as air, steam, and refrigerant.
　本実施例のスクロール流体機械１では、旋回スクロール３は、旋回ラップ５をハウジング２の収容穴６内に配置して、収容穴６よりも外側においてハウジング２に旋回可能に保持される。一方、固定スクロール４は、固定ラップ７をハウジング２の収容穴６内に配置して、ハウジング２の収容穴６を閉じるように、収容穴６のフランジ１０に着脱可能に設けられる。その際、固定スクロール４の端板２０も収容穴６内に収容することで、コンパクトな構成とできる。 In the scroll fluid machine 1 of the present embodiment, the orbiting scroll 3 has the orbiting wrap 5 disposed in the housing hole 6 of the housing 2 and is rotatably held in the housing 2 outside the housing hole 6. On the other hand, the fixed scroll 4 is detachably provided on the flange 10 of the receiving hole 6 so that the fixed wrap 7 is disposed in the receiving hole 6 of the housing 2 and the receiving hole 6 of the housing 2 is closed. At this time, the end plate 20 of the fixed scroll 4 is also accommodated in the accommodation hole 6, so that a compact configuration can be achieved.
　また、本実施例のスクロール流体機械１では、ハウジング２の周方向三箇所に設置されるクランク軸１８の内、一本にのみ回転駆動力が与えられるので、各クランク軸１８間を接続する回転同期機構が不要である。回転同期機構がないので、ハウジング２の収容穴６に対する固定スクロール４の着脱を阻害する部材はなく、ハウジング２に対する固定スクロール４の着脱が容易である。 Further, in the scroll fluid machine 1 of the present embodiment, a rotational driving force is applied to only one of the crankshafts 18 installed at three locations in the circumferential direction of the housing 2. No synchronization mechanism is required. Since there is no rotation synchronization mechanism, there is no member that obstructs the attachment / detachment of the fixed scroll 4 to / from the accommodation hole 6 of the housing 2, and the attachment / detachment of the fixed scroll 4 to / from the housing 2 is easy.
　このような構成であるから、ハウジング２に対する旋回スクロール３の軸受部を分解することなく、図４に示すように、ハウジング２から固定スクロール４を容易に取り外すことができる。これにより、表面処理や素材に起因した部品の交換や再処理、異物の噛み込みの解消、内部の清掃などを容易に行うことができる。たとえば、旋回ラップ５のチップシール２１、固定ラップ７のチップシール３２、および外周ラップ３３の外部シール３４の交換を容易に行うことができる。 Because of such a configuration, the fixed scroll 4 can be easily detached from the housing 2 as shown in FIG. 4 without disassembling the bearing portion of the orbiting scroll 3 with respect to the housing 2. As a result, it is possible to easily perform replacement or reprocessing of parts due to surface treatment or material, elimination of foreign matter biting, internal cleaning, and the like. For example, the tip seal 21 of the swirl wrap 5, the tip seal 32 of the fixed wrap 7, and the external seal 34 of the outer peripheral wrap 33 can be easily replaced.
　ところで、前記実施例では、ハウジング２に対し固定スクロール４を着脱できるが、さらに旋回スクロールベース１３に対し旋回スクロール本体１４を着脱することもできる。この場合、図示例ではハウジング２の上下の軸受部について多少の分解が必要になるものの、上下の旋回スクロール本体１４を旋回スクロールベース１３から取り外すことができる。従って、上下の旋回スクロール本体１４を個別に取り扱うことができ、旋回ラップ５の不良時に、一枚単位（つまり上下の旋回スクロール本体１４の片側のみ）での交換も可能となる。また、旋回ラップ５に特別な表面処理を施したい場合でも、旋回スクロールベース１３と旋回スクロール本体１４とを別体に構成しておけば、旋回スクロールベース１３と旋回スクロール本体１４とを一体に形成した場合と比較して、表面処理時のサイズを小さくでき、コスト低減を図ることもできる。 In the embodiment, the fixed scroll 4 can be attached to and detached from the housing 2, but the orbiting scroll main body 14 can be attached to and detached from the orbiting scroll base 13. In this case, although the upper and lower bearing portions of the housing 2 require some disassembly in the illustrated example, the upper and lower orbiting scroll bodies 14 can be removed from the orbiting scroll base 13. Therefore, the upper and lower orbiting scroll main bodies 14 can be handled individually, and when the orbiting wrap 5 is defective, it is possible to replace the upper and lower orbiting scroll main bodies 14 in units of one sheet (that is, only one side of the upper and lower orbiting scroll main bodies 14). Further, even when it is desired to perform a special surface treatment on the orbiting wrap 5, if the orbiting scroll base 13 and the orbiting scroll main body 14 are configured separately, the orbiting scroll base 13 and the orbiting scroll main body 14 are integrally formed. Compared to the case, the size during the surface treatment can be reduced, and the cost can be reduced.
　なお、旋回スクロールベース１３に対し旋回スクロール本体１４を着脱可能とする際、ハウジング２の収容穴６を介して、旋回スクロールベース１３に対し旋回スクロール本体１４を着脱可能とすれば一層好ましい。その場合、旋回スクロール本体１４の端板１７の外径は、ハウジング２の収容穴６の内径、さらには収容穴６のフランジ１０の内径よりも小さく形成される。従って、ハウジング２から固定スクロール４を取り外した後、旋回スクロールベース１３から旋回スクロール本体１４をさらに取り外すことができる。しかも、その作業をハウジング２の収容穴６を介して行うことができ、軸受部の着脱を伴わないため、作業性が一層向上する。 It should be noted that when the orbiting scroll main body 14 can be attached to and detached from the orbiting scroll base 13, it is more preferable that the orbiting scroll main body 14 can be attached to and detached from the orbiting scroll base 13 through the housing hole 6 of the housing 2. In that case, the outer diameter of the end plate 17 of the orbiting scroll body 14 is formed smaller than the inner diameter of the housing hole 6 of the housing 2 and further the inner diameter of the flange 10 of the housing hole 6. Therefore, after removing the fixed scroll 4 from the housing 2, the orbiting scroll body 14 can be further removed from the orbiting scroll base 13. In addition, the work can be performed through the housing hole 6 of the housing 2, and the workability is further improved because the bearing portion is not attached or detached.
　本発明のスクロール流体機械１は、前記実施例の構成に限らず適宜変更可能である。特に、ハウジング２の収容穴６に旋回ラップ５を旋回可能に収容して、ハウジング２に旋回スクロール３を旋回可能に保持すると共に、旋回ラップ５と噛み合う固定ラップ７を有する固定スクロール４をハウジング２に対し着脱可能に設けるのであれば、その他の構成は適宜に変更可能である。 The scroll fluid machine 1 of the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate. In particular, the orbiting wrap 5 is accommodated in the accommodation hole 6 of the housing 2 so that the orbiting wrap 5 can be pivoted, and the orbiting scroll 3 is held in the housing 2 so as to be pivotable. However, other configurations can be changed as appropriate as long as they are detachably provided.
　たとえば、前記実施例において、旋回ラップ５のチップシール２１、固定ラップ７のチップシール３２、および外周ラップ３３の外部シール３４の内、いずれか一以上のシールは、その設置を省略してもよい。その場合でも、ハウジング２に対する固定スクロール４の着脱が容易であるから、内部のメンテナンスを容易に行うことができる。従って、部品の表面処理や素材への対応、異物の噛み込みの解消、内部の清掃などを容易に行うことができる。 For example, in the above embodiment, any one or more of the tip seal 21 of the turning wrap 5, the tip seal 32 of the fixed wrap 7, and the outer seal 34 of the outer peripheral wrap 33 may be omitted. . Even in that case, since the fixed scroll 4 can be easily attached to and detached from the housing 2, the internal maintenance can be easily performed. Therefore, it is possible to easily carry out surface treatment of parts, correspondence to materials, elimination of foreign matter biting, internal cleaning, and the like.
　また、前記実施例では、ハウジング２は、平面視において、円形とされたが、これに限らず、三角形状、その他の多角形状とされてもよい。 In the above embodiment, the housing 2 is circular in plan view, but is not limited thereto, and may be triangular or other polygonal shapes.
　また、前記実施例では、ハウジング２の収容穴６にフランジ１０を設けて、そのフランジ１０に固定スクロール４の端板２０の外周部を重ね合わせて取り付けたが、フランジ１０の設置を省略して、ハウジング２の上下面（上壁の上面、下壁の下面）に固定スクロール４の端板２０の外周部を重ね合わせて取り付けるようにしてもよい。その場合も、ネジなどを用いて、ハウジング２に対し固定スクロール４を着脱可能に構成しておけばよい。 Moreover, in the said Example, although the flange 10 was provided in the accommodation hole 6 of the housing 2, and the outer peripheral part of the end plate 20 of the fixed scroll 4 was piled up and attached to the flange 10, installation of the flange 10 is abbreviate | omitted. The outer peripheral portion of the end plate 20 of the fixed scroll 4 may be attached to the upper and lower surfaces of the housing 2 (the upper surface of the upper wall and the lower surface of the lower wall). In this case, the fixed scroll 4 may be configured to be detachable with respect to the housing 2 using screws or the like.
　また、前記実施例では、クランク軸１８の本数を三本としたが、四本以上とすることもできる。その場合も、その内の一本のみを駆動クランク軸１８Ｘとし、残りを従動クランク軸１８Ｙとするのがよい。 In the above embodiment, the number of crankshafts 18 is three, but may be four or more. In that case, it is preferable that only one of them is the drive crankshaft 18X and the rest is the driven crankshaft 18Y.
　さらに、前記実施例において、駆動クランク軸１８Ｘと従動クランク軸１８Ｙとを同一の構成として、部品の共通化を図ってもよい。たとえば、従動クランク軸１８Ｙとして、駆動クランク軸１８Ｘと同様の構成を採用してもよい。その場合でも、駆動クランク軸１８Ｘにのみ回転駆動力が与えられる。要は、クランク軸１８を少なくとも三本備え、その内の一本にのみ回転駆動力が与えられればよい。 Furthermore, in the above-described embodiment, the drive crankshaft 18X and the driven crankshaft 18Y may have the same configuration, and parts may be shared. For example, a configuration similar to that of the drive crankshaft 18X may be adopted as the driven crankshaft 18Y. Even in this case, a rotational driving force is applied only to the drive crankshaft 18X. In short, it is sufficient that at least three crankshafts 18 are provided, and only one of them is given a rotational driving force.
　本発明は、その精神又は主要な特徴から逸脱することなく、他のいろいろな形で実施することができる。そのため、上記の実施形態若しくは実施例は、あらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。本発明の範囲は、請求の範囲によって示すものであって、明細書本文には何ら拘束されない。更に、請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。 The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiments or examples are merely examples in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
　　１　スクロール流体機械
　　２　ハウジング
　　３　旋回スクロール
　　４　固定スクロール
　　５　旋回ラップ
　　６　収容穴
　　７　固定ラップ
　　８　中空部
　　９　開口
　１０　フランジ
　１２　基板部
　１３　旋回スクロールベース
　１４　旋回スクロール本体
　１７　（旋回スクロール本体の）端板
　１８　クランク軸
　１８Ｘ　駆動クランク軸
　１８Ｙ　従動クランク軸
　１８ｂ，１８ｃ　主軸部
　１８ｄ　偏心軸部
　２０　（固定スクロールの）端板
　２１　（旋回ラップの）チップシール
　３２　（固定ラップの）チップシール
　３６　第一開口
　３７　第二開口 DESCRIPTION OF SYMBOLS 1 Scroll fluid machine 2 Housing 3 Orbiting scroll 4 Fixed scroll 5 Orbiting wrap 6 Accommodating hole 7 Fixed wrap 8 Hollow part 9 Opening 10 Flange 12 Substrate part 13 Orbiting scroll base 14 Orbiting scroll main body 17 End plate (of orbiting scroll main body) 18 Crank Shaft 18X Drive crankshaft 18Y Driven crankshaft 18b, 18c Main shaft portion 18d Eccentric shaft portion 20 End plate (of fixed scroll) 21 Tip seal (of swirl wrap) 32 Tip seal 36 (of fixed wrap) 36 First opening 37 Second opening

Claims (5)

  1. 　基板部の両面に渦巻き状の旋回ラップが設けられた旋回スクロールと、
    　前記旋回ラップが旋回可能に収容される収容穴を備え、前記収容穴の軸線と垂直に前記基板部が配置され、前記基板部の外周部において前記旋回スクロールを周方向三箇所以上でクランク軸により旋回可能に保持するハウジングと、
    　端板の片面に渦巻き状の固定ラップが設けられ、前記固定ラップを前記旋回ラップと噛み合わせて、前記旋回スクロールを挟むよう前記ハウジングに着脱可能に設けられる一対の固定スクロールと
    　を備えることを特徴とするスクロール流体機械。     A orbiting scroll provided with spiral orbiting wraps on both sides of the substrate part;
    The swivel wrap is provided with a receiving hole that is turnably received, the substrate portion is disposed perpendicular to the axis of the receiving hole, and the orbiting scroll is moved by a crankshaft at three or more circumferential directions on the outer peripheral portion of the substrate portion. A housing that is pivotably held;
    A spiral fixed wrap is provided on one surface of the end plate, and the fixed wrap is engaged with the orbiting wrap, and a pair of fixed scrolls are detachably provided on the housing so as to sandwich the orbiting scroll. Scroll fluid machine.
  2. 　前記旋回ラップには、前記基板部からの延出先端部に、前記旋回ラップの渦巻きに沿って、前記固定スクロールの端板との隙間を埋めるチップシールが着脱可能に設けられ、
    　前記固定ラップには、前記端板からの延出先端部に、前記固定ラップの渦巻きに沿って、前記旋回スクロールの基板部との隙間を埋めるチップシールが着脱可能に設けられる
    　ことを特徴とする請求項１に記載のスクロール流体機械。     The swirl wrap is detachably provided with a tip seal that fills the gap with the end plate of the fixed scroll along the swirl of the swirl wrap at the leading end extending from the substrate portion,
    The fixed wrap is detachably provided with a tip seal that fills a gap with the substrate portion of the orbiting scroll along the spiral of the fixed wrap at the leading end extending from the end plate. The scroll fluid machine according to claim 1.
  3. 　前記固定スクロールの端板に、前記固定ラップを取り囲むよう円筒状の外周ラップが設けられ、
    　前記外周ラップには、前記端板からの延出先端部に、前記外周ラップの周方向に沿って、前記旋回スクロールの基板部との隙間を埋める外部シールが着脱可能に設けられる
    　ことを特徴とする請求項２に記載のスクロール流体機械。     A cylindrical outer peripheral wrap is provided on an end plate of the fixed scroll so as to surround the fixed wrap,
    The outer peripheral wrap is detachably provided with an external seal that fills a gap with the substrate portion of the orbiting scroll along the circumferential direction of the outer peripheral wrap at the leading end extending from the end plate. The scroll fluid machine according to claim 2.
  4. 　前記ハウジングには、前記収容穴の軸方向中途部に、一対のフランジが、前記収容穴の軸方向に離隔すると共に前記収容穴の内側へ延出して形成され、
    　前記旋回スクロールの外周部は、前記一対のフランジ間の開口を介して、前記ハウジングの前記収容穴よりも外側において、前記クランク軸により前記固定スクロールに対し旋回可能に保持され、
    　前記ハウジングのフランジに前記固定スクロールの端板が重ね合わされて着脱可能に固定され、
    　前記ハウジングの周方向三箇所以上に設置されるクランク軸の内、一本にのみ回転駆動力が与えられる
    　ことを特徴とする請求項１～３のいずれか１項に記載のスクロール流体機械。     In the housing, a pair of flanges are formed in the middle of the housing hole in the axial direction so as to be spaced apart in the axial direction of the housing hole and extend to the inside of the housing hole,
    An outer peripheral portion of the orbiting scroll is held so as to be orbitable with respect to the fixed scroll by the crankshaft, outside the housing hole of the housing, through an opening between the pair of flanges.
    The end plate of the fixed scroll is overlaid on the flange of the housing and fixed detachably,
    The scroll fluid machine according to any one of claims 1 to 3, wherein a rotational driving force is applied to only one of the crankshafts installed at three or more locations in the circumferential direction of the housing.
  5. 　前記旋回スクロールは、前記クランク軸を介して前記ハウジングに保持される旋回スクロールベースと、前記旋回スクロールベースの中央部両面に設けられる旋回スクロール本体とからなり、
    　前記旋回スクロール本体は、前記旋回ラップを備えると共に、前記旋回スクロールベースに対し着脱可能に設けられる
    　ことを特徴とする請求項１～４のいずれか１項に記載のスクロール流体機械。     The orbiting scroll is composed of an orbiting scroll base held by the housing via the crankshaft, and an orbiting scroll body provided on both sides of the center portion of the orbiting scroll base,
    The scroll fluid machine according to any one of claims 1 to 4, wherein the orbiting scroll body includes the orbiting wrap and is detachably attached to the orbiting scroll base.
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JP2002021754A (en) * 2000-07-10 2002-01-23 Mineo Takahashi Scroll compressor
JP2002039079A (en) * 2000-07-24 2002-02-06 Anest Iwata Corp Scroll machine, its assembling method and its synchronizing method
JP2006183561A (en) * 2004-12-27 2006-07-13 Anest Iwata Corp Double-wrap scroll fluid machine
JP2011503419A (en) * 2007-11-08 2011-01-27 ケ，エンジウ Scroll type fluid machinery
JP2012188990A (en) * 2011-03-10 2012-10-04 Yanmar Co Ltd Scroll type fluid machine

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JP5958769B2 (en) 2016-08-02
CN105612351A (en) 2016-05-25
KR20160102151A (en) 2016-08-29
CN105612351B (en) 2018-04-13
KR102260104B1 (en) 2021-06-03
JP2015124653A (en) 2015-07-06

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