WO2017150594A1 - Compresseur à spirale - Google Patents

Compresseur à spirale Download PDF

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Publication number
WO2017150594A1
WO2017150594A1 PCT/JP2017/008036 JP2017008036W WO2017150594A1 WO 2017150594 A1 WO2017150594 A1 WO 2017150594A1 JP 2017008036 W JP2017008036 W JP 2017008036W WO 2017150594 A1 WO2017150594 A1 WO 2017150594A1
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WO
WIPO (PCT)
Prior art keywords
scroll
fixed scroll
housing
bearing holding
bearing
Prior art date
Application number
PCT/JP2017/008036
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English (en)
Japanese (ja)
Inventor
泰造 佐藤
公 塚本
信謙 小此木
Original Assignee
サンデン・オートモーティブコンポーネント株式会社
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 サンデン・オートモーティブコンポーネント株式会社 filed Critical サンデン・オートモーティブコンポーネント株式会社
Publication of WO2017150594A1 publication Critical patent/WO2017150594A1/fr

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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

Definitions

  • the present invention relates to a scroll compressor that has a fixed scroll and a movable scroll meshed with each other, and compresses a fluid such as a refrigerant flowing into a space between both scrolls.
  • a scroll compressor described in Patent Document 1 is generally known.
  • the scroll compressor described in Patent Document 1 is incorporated in a refrigerant circuit of an air conditioner mounted on a vehicle and compresses the refrigerant in the refrigerant circuit.
  • This scroll compressor has a housing in which a scroll unit including a fixed scroll and a movable scroll, an electric motor having a drive shaft connected to the movable scroll via a crank mechanism, and one end of the drive shaft are rotated.
  • a bearing holding portion that holds the bearing portion that supports the bearing portion.
  • the scroll compressor compresses the refrigerant flowing into the space (compression chamber) between the two scrolls by driving the electric motor and causing the movable scroll to revolve with respect to the fixed scroll.
  • the refrigerant is discharged.
  • a material for the fixed scroll and the movable scroll an aluminum-based material is generally used.
  • a CO 2 refrigerant may be employed as the refrigerant of the air conditioner.
  • the operating pressure in the scroll compressor is significantly higher than that of a conventional refrigerant such as R134a. Therefore, in this type of scroll compressor, when compressing CO 2 refrigerant, it is necessary to improve the airtightness of the space (compression chamber) formed between the fixed scroll and the movable scroll. It has been demanded.
  • the present invention has been made paying attention to such a situation, and by suppressing the amount of change in the gap between the fixed scroll and the movable scroll, it is possible to improve the airtightness of the space between the scrolls. It is an object of the present invention to provide a scroll type compressor that can be used.
  • a scroll compressor includes a fixed scroll and a movable scroll that are meshed with each other, an electric motor having a drive shaft connected to the movable scroll via a crank mechanism, and the movable scroll side of the drive shaft.
  • a bearing holding portion that holds a bearing portion that rotatably supports the end portion is provided in the housing, and the electric motor is driven to cause the movable scroll to revolve around the axis of the fixed scroll.
  • a scroll compressor that compresses fluid flowing into a space between both scrolls, wherein the housing includes a housing main body that is open at least at one end side, and a lid that closes an opening at one end side of the housing main body.
  • the fixed scroll is disposed between the lid portion and the bearing holding portion, and the lid portion and the Receiving holding portion and integrally fastened, said lid portion, the stationary scroll and the bearing holder is made of the same material of iron.
  • the fixed scroll is provided between the lid portion on one end side of the housing and the bearing holding portion that holds the bearing portion that rotatably supports the movable scroll side end portion of the drive shaft.
  • the lid portion and the bearing holding portion are integrally fastened.
  • a cover part, a fixed scroll, and a bearing holding part consist of the same material of an iron system. That is, according to the scroll compressor according to the one aspect, the fixed scroll can be sandwiched between the lid portion and the bearing holding portion and can be fastened integrally with the lid portion and the bearing holding portion. The rigidity of can be improved.
  • the lid portion and the bearing holding portion that are fastened to the fixed scroll are made of the same material as the fixed scroll, the linear expansion coefficient of the main members (lid portion and bearing holding portion) that come into contact with the fixed scroll And the linear expansion coefficient of the fixed scroll can be matched. Therefore, deformation of the fixed scroll due to the difference between the linear expansion coefficient of the fixed scroll and the linear expansion coefficient of the members around the fixed scroll can be prevented. Furthermore, since an iron-based material having a higher linear expansion coefficient than aluminum is used as the material for the fixed scroll, the deformation amount of the fixed scroll itself due to a temperature change can also be reduced.
  • the scroll compressor according to the one aspect, by devising the fastening structure around the fixed scroll and adopting the same iron-based material as the fixed scroll as the main member material around the fixed scroll, It is possible to improve the rigidity of the fixed scroll and reduce the deformation amount due to the temperature change of the fixed scroll. As a result, the amount of change in the gap (seal gap) allowed between the fixed scroll and the movable scroll during the compression operation can be reduced. Therefore, when compressing the CO 2 refrigerant, in order to increase the airtightness of the space between the two scrolls, the gap is set sufficiently smaller than the gap allowed when compressing the conventional refrigerant such as R134, and The set gap can be easily maintained in an appropriate range during the compression operation.
  • the scroll type compressor which can improve the airtightness of the space between both scrolls by reducing the variation
  • FIG. 1 is a schematic cross-sectional view of a scroll compressor according to this embodiment.
  • the scroll compressor 100 according to the present embodiment is incorporated in a refrigerant circuit of a vehicle air conditioner, for example, and compresses and discharges refrigerant (fluid) sucked from the low pressure side of the refrigerant circuit.
  • the scroll compressor 100 includes a scroll unit 1, a housing 10, an electric motor 20 as a drive unit that drives the scroll unit 1, and one end portion (upper end portion in FIG. 1) of a drive shaft 21 of the electric motor 20.
  • a bearing holding portion 30 for supporting and an inverter 40 for driving control of the electric motor 20 are provided.
  • the scroll compressor 100 will be described by taking a so-called inverter type as an example.
  • the scroll unit 1 includes a fixed scroll 2 and a movable scroll 3 that are meshed with each other.
  • the fixed scroll 2 is formed by integrally forming a spiral wrap 2b on a disk-shaped bottom plate 2a.
  • the movable scroll 3 is formed by integrally forming a spiral wrap 3b on a disk-shaped bottom plate 3a.
  • the bottom plate 2 a of the fixed scroll 2 has a larger diameter than the bottom plate 3 a of the movable scroll 3. Both scrolls 2 and 3 are arranged so that both the spiral wraps 2b and 3b mesh.
  • both the scrolls 2 and 3 have a predetermined gap between the end of the protruding side of the spiral wrap 2 b of the fixed scroll 2 and the bottom plate 3 a of the movable scroll 3 so that the spiral wrap 3 b of the movable scroll 3 protrudes.
  • the side edge is disposed so as to have a predetermined gap with the bottom plate 2 a of the fixed scroll 2. If this gap that can fluctuate during the compression operation is maintained in an appropriate range during the compression operation, the airtightness of the space (compression chamber) S described later is appropriately maintained. Refrigerant compression performance is maintained.
  • the scrolls 2 and 3 are arranged so that the side walls of the spiral wraps 2b and 3b are partially in contact with each other with the circumferential angles of the spiral wraps 2b and 3b shifted from each other. Thereby, a crescent-shaped space (compression chamber) S is formed between the spiral wraps 2b and 3b.
  • the fixed scroll 2 is fixed to a rear housing 12 (to be described later) of the housing 10, and has a groove 2a1 that opens toward the rear housing 12 at the radial center. Specifically, the groove 2a1 is formed on the back surface of the bottom plate 2a (that is, the end surface opposite to the movable scroll 3). The fastening structure and material of the fixed scroll 2 will be described in detail later.
  • the movable scroll 3 is configured to be capable of revolving around the axis of the fixed scroll 2 via a crank mechanism described later in a state in which the rotation is prevented.
  • the scroll unit 1 moves the space S formed between the scrolls 2 and 3, specifically the space between the spiral wraps 2 b and 3 b, to the center, and gradually reduces the volume.
  • the scroll unit 1 compresses the refrigerant flowing into the space S from the outer end side of the spiral wraps 2b and 3b in the space S.
  • the material of the movable scroll 3 will be described in detail later. As shown in FIG.
  • the housing 10 mainly includes a scroll housing 1, an electric motor 20, a bearing holding portion 30, and an inverter 40 inside a front housing 11, a rear housing 12, and an inverter. And a cover 13. These (11, 12, 13) are integrally fastened by fastening means such as bolts 14 to constitute the housing 10 of the scroll compressor 100.
  • the front housing 11 corresponds to a “housing main body” according to the present invention
  • the rear housing 12 corresponds to a “lid” according to the present invention.
  • the material of the housing 10 will be described in detail later.
  • the front housing 11 has a substantially annular peripheral wall portion 11a and a partition wall portion 11b.
  • the interior space of the front housing 11 is divided into an accommodation space for accommodating the scroll unit 1, the electric motor 20, and the bearing holding portion 30 and an accommodation space for accommodating the inverter 40 by the partition wall portion 11 b. Partitioned.
  • the opening on one end side (upper side in FIG. 1) of the peripheral wall portion 11 a is closed by the rear housing 12. Further, the opening on the other end side (the lower side in FIG. 1) of the peripheral wall portion 11 a is closed by the inverter cover 13.
  • a cylindrical support portion 11b1 that holds a bearing 15 that supports the other end portion (the lower end portion in FIG. 1) of the drive shaft 21 is provided at one end side of the peripheral wall portion 11a. Protrusively facing.
  • a refrigerant suction port P1 is formed in the peripheral wall portion 11a. Refrigerant from the low pressure side of the refrigerant circuit is sucked into the front housing 11 through the suction port P1. Therefore, the space in the front housing 11 functions as the suction chamber H1.
  • the electric motor 20 is cooled by circulating the refrigerant around the electric motor 20 in the suction chamber H1.
  • the upper space of the electric motor 20 communicates with the lower space of the electric motor 20 and constitutes one suction chamber H ⁇ b> 1 together with the lower space of the electric motor 20.
  • An appropriate amount of lubricating oil is stored in the suction chamber H1 for lubrication of sliding parts such as the drive shaft 21 that is rotationally driven.
  • the rear housing 12 is formed in a disk shape having an outer diameter that matches the outer diameter of the peripheral wall portion 11 a of the front housing 11.
  • the peripheral edge of the rear housing 12 is fastened to one end of the peripheral wall 11a (upper end in FIG. 1) by fastening means such as a suitable number of bolts 14 and the like. Close.
  • a peripheral edge portion (in other words, a portion surrounding the groove portion 2a1) of the rear surface of the bottom plate 2a of the fixed scroll 2 is in contact with one end surface of the rear housing 12.
  • the one end face of the rear housing 12 and the groove 2a1 of the bottom plate 2a define a refrigerant discharge chamber H2.
  • a compressed refrigerant discharge hole 2a2 is formed at the center of the bottom plate 2a.
  • a one-way valve (a check valve for restricting the flow from the discharge chamber H2 to the scroll unit 1) 16 is provided so as to cover the opening of the discharge hole 2a2.
  • the refrigerant compressed in the space S formed between the spiral wraps 2 b and 3 b is discharged through the discharge hole 2 a ⁇ b> 2 and the one-way valve 16.
  • the compressed refrigerant in the discharge chamber H2 is discharged to the high pressure side of the refrigerant circuit via the discharge passage 12a formed in the rear housing 12 and the discharge port P2.
  • the discharge passage 12a formed in the rear housing 12 is provided with an appropriate separating means for separating the lubricating oil from the compressed refrigerant in the discharge chamber H2.
  • the refrigerant from which the lubricating oil is separated by this separating means (including the refrigerant in which a small amount of lubricating oil remains) is discharged to the high pressure side of the refrigerant circuit via the discharge port P2.
  • the lubricating oil separated by the separating means is guided to a back pressure chamber H3 described later via a pressure supply passage (not shown).
  • the electric motor 20 includes a drive shaft 21, a rotor 22, and a stator core unit 23 disposed on the radially outer side of the rotor 22.
  • a three-phase AC motor is applied.
  • a direct current from a vehicle battery (not shown) is converted into an alternating current by the inverter 40 and supplied to the electric motor 20.
  • the drive shaft 21 is connected to the movable scroll 3 via a crank mechanism, and transmits the rotational force of the electric motor 20 to the movable scroll 3.
  • One end portion of the drive shaft 21 (that is, the end portion on the movable scroll 3 side) is inserted through a through hole formed in the bearing holding portion 30 and is rotatably supported by the bearing 17, and the other end portion of the drive shaft 21.
  • the inverter 40 side end portion is rotatably supported by a bearing 15 fitted to the support portion 11b1.
  • the bearing 17 corresponds to a “bearing portion” according to the present invention.
  • the rotor 22 is rotatably supported on the radially inner side of the stator core unit 23 via a drive shaft 21 that is fitted (for example, press-fitted) into a shaft hole formed at the radial center thereof.
  • a magnetic field is generated in the stator core unit 23 by power feeding from the inverter 40, a rotational force is applied to the rotor 22 and the drive shaft 21 is rotationally driven.
  • the bearing holding portion 30 holds the bearing 17 as a bearing portion that rotatably supports the movable scroll 3 side end portion of the drive shaft 21.
  • the bearing holding portion 30 is formed in a bottomed cylindrical shape having an outer diameter combined with the outer diameter of the bottom plate 2a of the fixed scroll 2, for example, and includes a cylindrical portion 30a and a bottom wall portion 30b positioned on one end side of the cylindrical portion 30a. And have.
  • the cylindrical portion 30a has a shoulder portion 30a3 that is expanded so that the inner diameter on the opening side is larger than the inner diameter on the bottom wall portion 30b side, and connects between the large-diameter portion 30a1 and the small-diameter portion 30a2.
  • the movable scroll 3 is accommodated in a space defined by the large-diameter portion 30a1 and the shoulder portion 30a3.
  • the opening-side end portion of the cylindrical portion 30a is in contact with the peripheral edge portion of the end surface on the movable scroll 3 side of the bottom plate 2a. Therefore, the opening of the bearing holding portion 30 is closed by the fixed scroll 2.
  • the bearing 17 is fitted into the small diameter portion 30a2 of the cylindrical portion 30a. And the through-hole for making the movable scroll 3 side edge part of the drive shaft 21 penetrate is opened in the radial direction center part of the bottom wall part 30b.
  • An annular thrust plate 18 is disposed between the shoulder 30 a 3 of the bearing holder 30 and the bottom plate 3 a of the movable scroll 3.
  • the shoulder 30a3 receives a thrust force from the movable scroll 3 via the thrust plate 18.
  • Seal members 19 are respectively disposed at portions of the shoulder 30a3 and the bottom plate 3a that are in contact with the thrust plate 18. By these seal members 19, a back pressure chamber H3 is defined between the bottom plate 3a and the small diameter portion 30a2.
  • the bearing holder 30 is supplied with a refrigerant (specifically, a mixed fluid of refrigerant and lubricating oil) from the suction chamber H1 to the space H4 near the outer ends of the spiral wraps 2b and 3b of the scroll unit 1.
  • a refrigerant introduction passage for introduction is formed. Since the refrigerant introduction passage communicates between the space H4 and the suction chamber H1, the pressure in the space H4 is equal to the pressure in the suction chamber H1 (suction chamber pressure).
  • the crank mechanism has a cylindrical boss portion that protrudes from the back surface (the end surface on the back pressure chamber H3 side) of the bottom plate 3a as shown in FIG. 24, an eccentric bush 26 attached in an eccentric state to a crank 25 provided at the end of the movable scroll 3 of the drive shaft 21, and a slide bearing 27 fitted to the boss portion 24.
  • the eccentric bush 26 is rotatably supported in the boss portion 24 via a slide bearing 27.
  • a balancer weight 28 is attached to the end of the drive shaft 21 on the side of the movable scroll 3 so as to face the centrifugal force during the operation of the movable scroll 3.
  • a rotation prevention mechanism for preventing the rotation of the movable scroll 3 is appropriately provided.
  • the movable scroll 3 is configured to be capable of revolving around the axis of the fixed scroll 2 via the crank mechanism in a state in which the rotation is prevented.
  • the scroll compressor 100 compresses the refrigerant flowing into the space S between the scrolls 2 and 3 by driving the electric motor 20 and causing the orbiting scroll 3 to revolve around the axis of the fixed scroll 2.
  • the flow of the refrigerant in the scroll compressor 100 will be described.
  • Refrigerant from the low pressure side of the refrigerant circuit is introduced into the suction chamber H1 via the suction port P1, and then guided to the space H4 near the outer end of the scroll unit 1 via the refrigerant introduction passage (not shown).
  • the refrigerant in the space H4 is taken into the space S between the spiral wraps 2b and 3b and is compressed in the space S.
  • the compressed refrigerant is discharged to the discharge chamber H2 via the discharge hole 2a2 and the one-way valve 16, and then discharged from the discharge chamber H2 to the high pressure side of the refrigerant circuit via the discharge passage 12a and the discharge port P2.
  • the fastening structure of the fixed scroll 2 in this embodiment will be described.
  • the fixed scroll 2 is fastened integrally with the rear housing 12 and the bearing holding portion 30 while being disposed between the rear housing 12 and the bearing holding portion 30.
  • the fixed scroll 2 causes the peripheral portion of the back surface of the bottom plate 2a to abut one end surface of the rear housing 12, and the peripheral portion of the end surface of the bottom plate 2a on the movable scroll 3 side is used as a bearing holding portion. It is made to contact
  • Through holes for inserting the bolts 14 are opened at a plurality of locations that are appropriately spaced in the circumferential direction in the peripheral portions of the cylindrical portion 30 a of the bearing holding portion 30 and the bottom plate 2 a of the fixed scroll 2.
  • a female screw portion is formed on one end face side of the rear housing 12 in accordance with the opening position of the through hole.
  • the bolt 14 is inserted through the through hole of the cylindrical portion 30 a and the bottom plate 2 a and is screwed into the female screw portion of the rear housing 12.
  • the fixed scroll 2 is sandwiched between the rear housing 12 and the bearing holding portion 30 and is fastened integrally with the rear housing 12 and the bearing holding portion 30.
  • the rear housing 12, the fixed scroll 2, the movable scroll 3, the bearing 17, the thrust plate 18, the seal member 19, the drive shaft 21, and the crank A compression mechanism unit 50 including the mechanism (24, 25, 26, 27, 28) and the bearing holding portion 30 is configured.
  • the compression mechanism unit 50 is detachably attached to the front housing 11.
  • the compression mechanism unit 50 has a peripheral portion of the end face on the fixed scroll 2 side of the rear housing 12 as a fastening means such as a bolt 14 on one end side end portion (opening side end portion) of the peripheral wall portion 11a of the front housing 11. And are removed from the front housing 11 by releasing the fastening. That is, when the scroll compressor 100 is assembled, the compression mechanism unit 50 is incorporated such that a portion other than the rear housing 12 is inserted into the front housing 11.
  • the material of the scroll unit 1, the housing 10, and the bearing holding part 30 in this embodiment will be described.
  • the rear housing 12, the fixed scroll 2, and the bearing holding portion 30 are made of the same iron-based material.
  • the rear housing 12 and the bearing holding portion 30 which are main members fastened to the fixed scroll 2 are made of the same iron-based material as the fixed scroll 2.
  • the movable scroll 3 is not a member that is fastened to the fixed scroll 2. Therefore, the movable scroll 3 may be formed of the same material as the fixed scroll 2 or may be formed of a different material (for example, an aluminum-based material).
  • the front housing 11 and the inverter cover 13 are made of an aluminum-based material. That is, the portion of the housing 10 that is fastened to the fixed scroll 2 (rear housing 12) employs the same material (iron-based material) as the fixed scroll 2 and is not fastened to the fixed scroll 2 of the housing 10.
  • the material (aluminum-type material) different from the fixed scroll 2 is employ
  • the fixed scroll 2 is fastened integrally with the rear housing 12 and the bearing holding portion 30 in a state of being disposed between the rear housing 12 and the bearing holding portion 30.
  • the rear housing 12, the fixed scroll 2, and the bearing holder 30 are made of the same iron-based material. That is, according to the scroll compressor 100, the fixed scroll 2 can be sandwiched between the rear housing 12 and the bearing holding portion 30, and can be fastened integrally with the rear housing 12 and the bearing holding portion 30. The rigidity of the fixed scroll 2 can be improved.
  • the rear housing 12 and the bearing holding portion 30 that are fastened to the fixed scroll 2 are formed of the same material as the fixed scroll 2, main members that contact the fixed scroll 2 (the rear housing 12 and the bearing holding portion).
  • the linear expansion coefficient of the part 30) and the linear expansion coefficient of the fixed scroll 2 can be matched. Therefore, deformation of the fixed scroll 2 due to the difference between the linear expansion coefficient of the fixed scroll 2 and the linear expansion coefficient of members around the fixed scroll 2 can be prevented.
  • an iron-based material having a higher linear expansion coefficient than aluminum is used as the material of the fixed scroll 2, the deformation amount of the fixed scroll 2 itself due to a temperature change can also be reduced.
  • the scroll compressor 100 by devising the fastening structure around the fixed scroll 2 and adopting the same iron-based material as the fixed scroll 2 as the material of the main members around the fixed scroll 2,
  • the rigidity of the fixed scroll 2 can be improved and the amount of deformation due to the temperature change of the fixed scroll 2 can be reduced.
  • a gap (seal gap) allowed between the fixed scroll 2 and the movable scroll 3 during the compression operation. ) Can be reduced. Accordingly, when compressing the CO 2 refrigerant, the gap is set sufficiently smaller than the gap allowed when the refrigerant such as the conventional R134 is compressed in order to increase the airtightness of the space S between the scrolls 2 and 3.
  • the set gap can be easily maintained in an appropriate range during the compression operation.
  • the scroll compressor 100 capable of improving the airtightness of the space S between the scrolls 2 and 3 by reducing the amount of change in the gap between the fixed scroll 2 and the movable scroll 3.
  • the compression mechanism unit 50 having the portion 30 is detachably attached to the front housing 11. Accordingly, the compression mechanism unit 50 can be driven alone by rotating the drive shaft 21 of the compression mechanism unit 50 with a test motor or the like.
  • the test of the compression mechanism unit 50 alone can be easily performed before assembly to the front housing 11 or after removal from the front housing 11.
  • the front housing 11 and the inverter cover 13 of the housing 10 are made of an aluminum-based material (for example, the same aluminum-based material), and the rear housing 12 of the housing 10 is the fixed scroll 2. And made of the same iron-based material.
  • deformation of the fixed scroll 2 can be suppressed by using the same material as that of the fixed scroll 2 for the member fastened to the fixed scroll 2 in the housing 10.
  • the weight increase of the housing 10 whole can be suppressed by using an aluminum-type material.
  • the front housing 11 and the inverter cover 13 may be made of the same iron-based material as that of the fixed scroll 2, for example.
  • this invention is not restrict
  • the movable scroll 3 is accommodated in the bearing holding portion 30 (specifically, the large-diameter portion 30a1).
  • the present invention is not limited to this, and as shown in FIG. It is good also as a structure accommodated.
  • the peripheral portion of the bottom plate 2 a of the fixed scroll 2 is formed with a large diameter portion 2 a 3 that protrudes toward the bearing holding portion 30, and the movable scroll 3 is accommodated in the large diameter portion 2 a 3 of the fixed scroll 2.
  • maintenance part 30 should just be provided with the small diameter part 30a2 which fits the bearing 17 in the cylindrical part 30a.
  • the scroll compressor 100 has been described by taking a so-called inverter-integrated case as an example. However, the present invention is not limited to this, and the scroll compressor 100 may be separate from the inverter 40. In this case, the housing 10 only needs to include the front housing 11 and the rear housing 12.
  • a predetermined gap is simply provided between the protruding edge of the spiral wrap 2b and the bottom plate 3a, or between the protruding edge of the spiral wrap 3b and the bottom plate 2a.
  • the present invention is not limited to this, and a chip seal may be provided so as to fill this gap. If this gap that can fluctuate during the compression operation is maintained in an appropriate range during the compression operation, the airtightness of the space S between the scrolls 2 and 3 is more appropriately maintained by the tip seal.
  • the refrigerant has been assumed to be CO 2 refrigerant is not limited to this, it is possible to apply the appropriate refrigerant.

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

Abstract

La présente invention concerne un compresseur à spirale qui est capable d'améliorer l'étanchéité à l'air d'un espace entre deux spirales. Un compresseur à spirale (100) comprime un fluide s'écoulant dans un espace (S) entre deux spirales (2 et 3) en faisant tourner la spirale mobile (3) autour du centre axial de la spirale fixe (2). Un logement (10) comprend : un logement avant (corps de logement) (11) présentant une ouverture sur au moins un de ses côtés d'extrémité; et un logement arrière (partie couvercle) (12) qui ferme une ouverture sur un côté d'extrémité du logement avant (11). La spirale fixe (2) est fixée d'un seul tenant au logement arrière (12) et une partie support de palier (30) dans l'état agencé entre le logement arrière (12) et la partie support de palier (30). Le logement arrière (12), la volute fixe (2) et la partie support de palier (30) sont réalisés dans le même matériau en fer.
PCT/JP2017/008036 2016-02-29 2017-02-21 Compresseur à spirale WO2017150594A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-037639 2016-02-29
JP2016037639A JP2017155618A (ja) 2016-02-29 2016-02-29 スクロール型圧縮機

Publications (1)

Publication Number Publication Date
WO2017150594A1 true WO2017150594A1 (fr) 2017-09-08

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PCT/JP2017/008036 WO2017150594A1 (fr) 2016-02-29 2017-02-21 Compresseur à spirale

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WO (1) WO2017150594A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934905A (en) * 1989-04-28 1990-06-19 Tecumseh Products Company Oil turbulence minimizer for a hermetic compressor
JPH09287585A (ja) * 1996-04-24 1997-11-04 Denso Corp 密閉型電動圧縮機
JPH11218085A (ja) * 1997-12-15 1999-08-10 Scroll Technol スクロールコンプレッサー
JP2000213463A (ja) * 1999-01-25 2000-08-02 Matsushita Electric Ind Co Ltd 密閉型圧縮機及びその組立方法
JP2005054667A (ja) * 2003-08-04 2005-03-03 Sanden Corp スクロール型電動流体機械

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934905A (en) * 1989-04-28 1990-06-19 Tecumseh Products Company Oil turbulence minimizer for a hermetic compressor
JPH09287585A (ja) * 1996-04-24 1997-11-04 Denso Corp 密閉型電動圧縮機
JPH11218085A (ja) * 1997-12-15 1999-08-10 Scroll Technol スクロールコンプレッサー
JP2000213463A (ja) * 1999-01-25 2000-08-02 Matsushita Electric Ind Co Ltd 密閉型圧縮機及びその組立方法
JP2005054667A (ja) * 2003-08-04 2005-03-03 Sanden Corp スクロール型電動流体機械

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