EP3130805A1 - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- EP3130805A1 EP3130805A1 EP14888621.1A EP14888621A EP3130805A1 EP 3130805 A1 EP3130805 A1 EP 3130805A1 EP 14888621 A EP14888621 A EP 14888621A EP 3130805 A1 EP3130805 A1 EP 3130805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- orbiting scroll
- scroll
- orbiting
- frame
- thrust
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 19
- 239000010687 lubricating oil Substances 0.000 description 16
- 239000003507 refrigerant Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/066—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
- 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
- F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
-
- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- 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
- F04C2240/00—Components
- F04C2240/10—Stators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
-
- 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
- F04C23/008—Hermetic pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
- The present invention relates to a scroll compressor that is primarily mounted on a refrigerant circuit of a refrigerator, an air-conditioning apparatus, a water heater, or other devices.
- As an existing scroll compressor, a scroll compressor in which, when the material of an orbiting scroll is cast iron, the orbiting scroll, a bimetal thrust bearing that supports the orbiting scroll, and a thrust plate made of Swedish steel are slid to form a thrust bearing is known.
- Alternatively, a scroll compressor in which, when a thrust load is large or when sliding characteristics are not adequate, wear and seizure between an orbiting scroll and a thrust bearing are prevented by providing an oil supply hole that extends from a boss section of the orbiting scroll to a thrust surface of the orbiting scroll and increasing an oil supply amount is known (refer to, for example, Patent Literature 1).
- Still alternatively, a scroll compressor that increases wear resistance of a thrust bearing section by, at a thrust bearing surface that supports an orbiting scroll, forming a plurality of spiral groove mechanisms or a plurality of taper land bearing mechanisms and generating oil film pressure is known (refer to, for example, Patent Literature 2).
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- Patent Literature 1:
Japanese Unexamined Patent Application Publication No. 5-149277 Fig. 1 ) - Patent Literature 2:
Japanese Unexamined Patent Application Publication No. 8-319959 Figs. 1 to 3 ) - An existing thrust bearing structure is a simple structure in which the orbiting scroll made of cast iron and the thrust plate made of Swedish steel or other materials are slid. Since a bimetal thrust bearing is not used, under a condition in which a thrust load is increased, slidability between the orbiting scroll and the thrust plate deteriorates, as a result of which a back surface (lower surface) of the orbiting scroll is subjected to, for example, wear and seizure.
- The invention is made to solve the above-described problems. It is an object of the invention to provide a scroll compressor that can suppress wear and seizure of a lower surface of an orbiting scroll even if the scroll compressor has a simple structure that does not use an expensive bimetal thrust bearing. Solution to Problem
- A scroll compressor according to an embodiment of the invention includes a body container that is a hermetically sealed container; a fixed scroll that is fixed to an upper portion of an inside of the body container; an orbiting scroll that is disposed below the fixed scroll and that, together with the fixed scroll, forms a compression chamber, the orbiting scroll including a boss section at a central portion of a lower surface of the orbiting scroll, the orbiting scroll being made of a cast-iron-based material; a rotary drive shaft having an eccentric shaft section formed at an upper end portion of the rotary drive shaft, the rotary drive shaft including an oil passing hole that connects an upper side and a lower side in an inside of the shaft, the eccentric shaft section being rotatably supported by an orbiting bearing at the boss section of the orbiting scroll; a frame including a thrust support surface that receives the orbiting scroll, a recessed section that is formed inwardly from the thrust support surface in a radial direction of the body container and that accommodates the boss section of the orbiting scroll, and a main bearing section that is formed at a lower portion of the recessed section and that rotatably supports the rotary drive shaft, the frame being fixed to an inner peripheral surface of the body container; a thrust plate that is disposed between the lower surface of the orbiting scroll and the thrust support surface of the frame and that slidably supports the lower surface of the orbiting scroll, the thrust plate having a form of a ring plate and being made of a steel-plate-based material; an Oldham ring that is accommodated in the recessed section of the frame and that restricts rotation of the orbiting scroll around the rotary drive shaft; and an orbiting-side Oldham groove that is formed in the lower surface of the orbiting scroll outwardly from the boss section, the orbiting-side Oldham groove guiding the Oldham ring, wherein a circumferential groove that communicates with the orbiting-side Oldham groove is formed in the lower surface of the orbiting scroll.
- In the scroll compressor of an embodiment of the invention, since the circumferential groove that communicates with the orbiting-side Oldham groove is formed in the lower surface of the orbiting scroll, it is possible to supply a sufficient amount of lubricating oil between the orbiting scroll and the thrust plate, and to generate oil film pressure by the wedge effect. As a result, the advantageous effects of preventing wear and suppressing seizure at the lower surface of the orbiting scroll are obtained.
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- [
Fig. 1] Fig. 1 is a vertical sectional view of a scroll compressor in Embodiment 1 of the invention. - [
Fig. 2] Fig. 2 illustrates an orbiting scroll of the scroll compressor, withFig. 2(a) being a sectional view taken in the direction of the arrows along line A-A ofFig. 2(b), and Fig. 2(b) being a bottom view. - [
Fig. 3] Fig. 3 illustrates a frame of the scroll compressor, withFig. 3(a) being a plan view andFig. 3(b) being a sectional view taken in the direction of the arrows along line B-B ofFig. 3(a) . - [
Fig. 4] Fig. 4 is a plan view showing a state in which an Oldham ring is mounted in the frame of the scroll compressor. - [
Fig. 5] Fig. 5 is a vertical sectional view of an orbiting scroll and a frame of a scroll compressor in Embodiment 2 of the invention. - In Embodiment 1, wear and seizure of a thrust surface of an orbiting scroll are suppressed.
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Fig. 1 is a vertical sectional view of a scroll compressor in Embodiment 1 of the present invention.Fig. 2 illustrates an orbiting scroll of the scroll compressor.Fig. 3 illustrates a frame of the scroll compressor.Fig. 4 is a plan view showing a state in which an Oldham ring is mounted in the frame of the scroll compressor. - In each figure, the scroll compressor according to Embodiment 1 sucks refrigerant that circulates through a refrigerant circuit, compresses the refrigerant to a state of high temperature and high pressure, and discharges the refrigerant to the refrigerant circuit. The scroll compressor includes a
body container 100 that is a hermetically sealed container; afixed scroll 101 that is fixed to and disposed at an upper portion of the inside of thebody container 100; anorbiting scroll 102 that is disposed below thefixed scroll 101 and that includes aboss section 102c at a lower surface thereof; arotary drive shaft 114 including an oil passing ho1e114a that connects an upper side and a lower side in the shaft; aframe 105 that is fixed to and disposed at a container inner peripheral surface of an intermediate portion of thebody container 100; athrust plate 104 that slidably supports theorbiting scroll 102 and that has the form of a ring plate; and anoil pump 108 that is connected to a lower portion of therotary drive shaft 114. Adischarge pipe 113 for discharging refrigerant gas is connected to an upper portion of thebody container 100, and asuction pipe 112 for sucking the refrigerant gas is connected to a body section of thebody container 100. Theoil pump 108 pumps up lubricating oil (refrigerating machine oil) 109 that accumulates at a bottom portion of thebody container 100, and sends the lubricating oil to the oil passing hole114a. - The
frame 105 includes athrust support surface 105c that supports the orbitingscroll 102, arecessed section 105b that is formed inwardly from thethrust support surface 105c in a radial direction of the container and that is used for accommodating theboss section 102c of the orbitingscroll 102, and amain bearing section 105a that is formed at a lower portion of the inside of the recessedsection 105b and that rotatably supports therotary drive shaft 114. Aneccentric shaft section 110 that is rotatably supported by an orbitingbearing 102a at theboss section 102c of the orbitingscroll 102 is formed at an upper end portion of therotary drive shaft 114. An Oldhamring 103 that restricts rotation of the orbiting scroll 102 around an axis C of therotary drive shaft 114 is accommodated in therecessed section 105b of theframe 105. A frame-side Oldhamgroove 105d for guiding the Oldhamring 103 is formed in therecessed section 105b of theframe 105, with the frame-side Oldhamgroove 105d being long in the radial direction (refer toFigs. 3 and4 ). - The
thrust plate 104 that is made of a steel-plate-based material and that slidably supports the orbitingscroll 102 is disposed between athrust surface 102e at the lower surface of thescroll 102 and thethrust support surface 105c of theframe 105. Acutaway portion 104b that communicates with the frame-side Oldhamgroove 105d is formed in thethrust plate 104 at a location thereof that faces the frame-side Oldhamgroove 105d. Thecutaway portion 104b is formed with a shape having a size that is slightly larger than that of the frame-side Oldhamgroove 105d. A thrust bearing section is formed by bringing theorbiting scroll 102 and thethrust plate 104 in close contact with each other via the lubricatingoil 109. Thethrust plate 104 has a function of adjusting a gap in acompression chamber 111 in the direction of the axis C of the rotary drive shaft. - A lap 101 a that is provided vertically on a lower surface (back surface) of a base plate is formed at the
fixed scroll 101. Alap 102b that is provided vertically on an upper surface of a base plate and that has substantially the same shape as the lap 101 a is formed at theorbiting scroll 102. Theorbiting scroll 102 and thefixed scroll 101 are made of a cast-iron-based material, and are mounted in thebody container 100 with thelap 102b and the lap 101 a combined with each other. With theorbiting scroll 102 and thefixed scroll 101 combined with each other, a spiral direction of the lap 101 a and a spiral direction of thelap 102b are opposite each other. Thecompression chamber 111 whose volume changes relatively is formed between the lap 10a and the lap 9a. - The
fixed scroll 101 is fixed to an opening-port edge portion at an upper surface of theframe 105 with, for example, a bolt (not shown). On the other hand, theboss section 102c having a hollow cylindrical shape extends downward from a substantially central portion of the lower surface of the orbitingscroll 102, and an inner peripheral surface of theboss section 102c corresponds to the orbiting bearing 102a. An orbiting-side Oldham groove 102d that guides anupper protrusion 103a of the Oldhamring 103 is formed at a location in the lower surface of the orbitingscroll 102 that is situated outwardly from theboss section 102c, with the orbiting-side Oldhamgroove 102d being long in the radial direction (refer toFig. 2 ). By the Oldhamring 103 for preventing rotation movement, the orbiting scroll 102 revolves (so-called orbital movement) without rotating with respect to thefixed scroll 101. - The
eccentric shaft section 110 that is provided at an upper end of therotary drive shaft 114 is rotatably placed into the orbiting bearing 102a. By causing an inner peripheral portion of the orbiting bearing 102a and an outer peripheral portion of theeccentric shaft section 110 to slidably closely contact each other via the lubricatingoil 109, an orbiting bearing section is formed. Anelectric motor 115 includes arotor 106 and astator 107, therotor 106 being fixed to therotary drive shaft 114 and thestator 107 being fixed to the container inner peripheral surface of the intermediate portion. By starting energization to thestator 107, therotor 106 is rotated and driven to rotate therotary drive shaft 114. - The
rotary drive shaft 114 rotates as therotor 106 rotates, and rotates theorbiting scroll 102. An upper portion of the rotary drive shaft 114 (location near the eccentric shaft section 10) is supported by themain bearing section 105a of theframe 105. A ball bearing 117 is mounted on a central portion of asub-frame 116 fixed to an inner peripheral surface of a lower portion of thebody container 100, and rotatably supports the lower portion of therotary drive shaft 114. Theoil pump 108 of a displacement type is mounted on thesub-frame 116. Theoil pump 108 is connected to the rotary drive shaft 4, and is subjected to rotary force. The lubricatingoil 109 sucked by theoil pump 108 is sent to each sliding section via, for example, theoil passing hole 114a of therotary drive shaft 114. - Next, an operation is described.
- In the scroll compressor having such a structure, when voltage is applied to the
electric motor 115, therotary drive shaft 114 is rotated and driven, and theeccentric shaft section 110 rotates in the orbiting bearing 102a. Then, theorbiting scroll 102 whose rotation is suppressed by theOldham ring 103 undergoes orbital movement. This causes part of refrigerant gas to flow into thecompression chamber 111 via a suction port of theframe 105, and a suction process is started. The remaining part of the refrigerant gas passes through a cutaway portion of thestator 106, and cools theelectric motor 115 and the lubricatingoil 109. - The orbital movement of the
orbiting scroll 102 causes thecompression chamber 111 to gradually move toward the center of theorbiting scroll 102, and its volume is further reduced. This process causes the refrigerant gas sucked into thecompression chamber 111 to be compressed. At this time, the compressed refrigerant gas causes a load acting in a direction away from the fixedscroll 101 in the direction of axis C to act upon theorbiting scroll 102. However, this load is received by anupper surface 104a of thethrust plate 104. The compressed refrigerant passes through a discharge port of the fixedscroll 101 and through a discharge pipe 25, and is discharged to the refrigerant circuit from thebody container 100. The lubricatingoil 109 sucked up to theeccentric shaft section 110 by theoil pump 108 lubricates the sliding section of a bearing metal of theorbiting scroll 102 and the sliding section between thethrust surface 102e of theorbiting scroll 102 and theupper surface 104a of thethrust plate 104. Thereafter, part of the lubricatingoil 109 flows upstream from an outer peripheral edge of theorbiting scroll 102, and flows into thecompression chamber 111, lubricates the sliding section between the lap 101 a and thelap 102b. The remaining part of the lubricatingoil 109 flows downward from the inside of theframe 105, and returns to an oil sump at the bottom portion of thebody container 100. - In the scroll compressor having the above-described structure, the lubricating
oil 109 flows to acircumferential groove 102f from the orbitingscroll Oldham groove 102d each time theorbiting scroll 102 reciprocates along the orbiting-side Oldham groove 102d, and a sufficient amount of lubricatingoil 109 is supplied to thethrust surface 102e from thecircumferential groove 102f. Since thethrust plate 104 includes thecutaway portion 104b, a flow passage for supplying the lubricatingoil 109 from the frame-side Oldham groove 105d to thethrust surface 102e each time theOldham ring 103 reciprocates along the frame-side Oldham groove 105d is provided. In the related art, since thecutaway portion 104b described above is not formed in the thrust plate, the supply of lubricating oil from the frame-side Oldham groove to the thrust surface is hindered. - As described above, according to the scroll compressor of Embodiment 1, it is possible to increase the amount of lubricating
oil 109 supplied to thethrust surface 102e, so that the wedge effect occurring due to this increase makes it possible to generate high oil film pressure. As a result, it is possible to suppress wear and seizure of thethrust surface 102e of theorbiting scroll 102. - Although, in Embodiment 1, the lower surface of the orbiting scroll is a horizontal surface without being inclined, the scroll compressor of the present invention is not limited thereto. For example, Embodiment 2 in which, as shown in
Fig. 5 , a thrust surface 102g of anorbiting scroll 102A that is supported by anupper surface 104a of athrust plate 104 is an inclined surface that extends downward and outward in a radial direction is also included in the present invention. - According to the
orbiting scroll 102A including the inclined thrust surface 102g as described above, since a large wedge effect is provided, it is possible to generate higher oil film pressure. This makes it possible to reliably prevent wear and seizure of thethrust surface 102e of theorbiting scroll 102. Reference Signs List - 100 body container, 101 fixed scroll, 102, 102A orbiting scroll, 102a orbiting bearing, 102c boss section, 102d orbiting-side Oldham groove, 102e, 102g thrust surface, 102f circumferential groove, 103 Oldham ring, 104 thrust plate, 104b cutaway portion, 105 frame, 105a main bearing section, 105b recessed section, 105c thrust support surface, 105d frame-side Oldham groove, 108 oil pump, 109 lubricating oil, 110 eccentric shaft section, 111 compression chamber, 114 rotary drive shaft, 114a oil passing hole, C axis
Claims (3)
- A scroll compressor comprising:a body container being a hermetically sealed container;a fixed scroll fixed to an upper portion of an inside of the body container;an orbiting scroll disposed below the fixed scroll and, together with the fixed scroll, forming a compression chamber, the orbiting scroll including a boss section at a central portion of a lower surface of the orbiting scroll, the orbiting scroll being made of a cast-iron-based material;a rotary drive shaft having an eccentric shaft section formed at an upper end portion of the rotary drive shaft, the rotary drive shaft including an oil passing hole connecting an upper side and a lower side in the shaft, the eccentric shaft section being rotatably supported by an orbiting bearing at the boss section of the orbiting scroll;a frame including a thrust support surface on which the orbiting scroll is placed, a recessed section formed inwardly from the thrust support surface in a radial direction of the body container and accommodating the boss section of the orbiting scroll, and a main bearing section formed at a lower portion of the recessed section and rotatably supporting the rotary drive shaft, the frame being fixed to an inner peripheral surface of the body container;a thrust plate disposed between the lower surface of the orbiting scroll and the thrust support surface of the frame and that slidably supports the lower surface of the orbiting scroll, the thrust plate having a form of a ring plate and being made of a steel-plate-based material;an Oldham ring accommodated in the recessed section of the frame and restricting rotation of the orbiting scroll around the rotary drive shaft; andan orbiting-side Oldham groove formed in the lower surface of the orbiting scroll outwardly from the boss section, the orbiting-side Oldham groove guiding the Oldham ring,wherein a circumferential groove that communicates with the orbiting-side Oldham groove is formed in the lower surface of the orbiting scroll.
- The scroll compressor of claim 1, wherein a thrust surface of the orbiting scroll that is supported by an upper surface of the thrust plate is an inclined surface that extends downward and outward in the radial direction.
- The scroll compressor of claim 1 or claim 2, wherein a frame-side Oldham groove that guides the Oldham ring is formed in the recessed section of the frame, and a cutaway portion that communicates with the frame-side Oldham groove is formed in the thrust plate at a location thereof that faces the frame-side Oldham groove.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/002017 WO2015155802A1 (en) | 2014-04-09 | 2014-04-09 | Scroll compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3130805A1 true EP3130805A1 (en) | 2017-02-15 |
EP3130805A4 EP3130805A4 (en) | 2018-01-10 |
Family
ID=54287408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14888621.1A Withdrawn EP3130805A4 (en) | 2014-04-09 | 2014-04-09 | Scroll compressor |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160348680A1 (en) |
EP (1) | EP3130805A4 (en) |
JP (1) | JPWO2015155802A1 (en) |
CN (1) | CN105917120A (en) |
WO (1) | WO2015155802A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017168673A1 (en) | 2016-03-31 | 2017-10-05 | 三菱電機株式会社 | Scroll compressor and refrigeration cycle device |
CN105889076B (en) * | 2016-04-25 | 2019-08-27 | 广东美的环境科技有限公司 | Main frame of scroll compressor and scroll compressor |
JP6903228B2 (en) * | 2018-04-27 | 2021-07-14 | 三菱電機株式会社 | Scroll compressor and refrigeration cycle equipment |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5746001A (en) * | 1980-09-03 | 1982-03-16 | Hitachi Ltd | Scroll fluid device |
KR910002402B1 (en) * | 1986-11-05 | 1991-04-22 | 미쓰비시전기 주식회사 | Scroll compressor |
JPH0441987A (en) * | 1990-06-06 | 1992-02-12 | Mitsubishi Electric Corp | Scroll compressor |
JPH04107494U (en) * | 1991-01-31 | 1992-09-17 | 株式会社ゼクセル | scroll fluid machine |
JPH05149277A (en) * | 1991-11-26 | 1993-06-15 | Mitsubishi Heavy Ind Ltd | Horizontal type closed scroll compressor |
KR100360237B1 (en) * | 1999-10-15 | 2002-11-08 | 엘지전자 주식회사 | Structure for feeding oil in scroll compressor |
KR20030012662A (en) * | 2001-08-03 | 2003-02-12 | 엘지전자 주식회사 | Structure for protecting friction of scroll compressor |
CN1566696A (en) * | 2003-06-17 | 2005-01-19 | 乐金电子(天津)电器有限公司 | Cross slip-ring oil supply structure for vortex type compressor |
JP2008144678A (en) * | 2006-12-11 | 2008-06-26 | Mitsubishi Electric Corp | Scroll compressor |
US8007261B2 (en) * | 2006-12-28 | 2011-08-30 | Emerson Climate Technologies, Inc. | Thermally compensated scroll machine |
CN101793250A (en) * | 2009-11-28 | 2010-08-04 | 广东正力精密机械有限公司 | Vortex compressor for improving oil supply of cross pin ring |
JP5612411B2 (en) * | 2010-09-21 | 2014-10-22 | 株式会社ヴァレオジャパン | Scroll compressor |
JP5864883B2 (en) * | 2011-04-12 | 2016-02-17 | 三菱電機株式会社 | Scroll compressor |
JP5858638B2 (en) * | 2011-04-20 | 2016-02-10 | 三菱電機株式会社 | Scroll compressor |
-
2014
- 2014-04-09 JP JP2016512489A patent/JPWO2015155802A1/en active Pending
- 2014-04-09 WO PCT/JP2014/002017 patent/WO2015155802A1/en active Application Filing
- 2014-04-09 EP EP14888621.1A patent/EP3130805A4/en not_active Withdrawn
- 2014-04-09 CN CN201480073390.3A patent/CN105917120A/en active Pending
- 2014-04-09 US US15/111,385 patent/US20160348680A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JPWO2015155802A1 (en) | 2017-04-13 |
CN105917120A (en) | 2016-08-31 |
US20160348680A1 (en) | 2016-12-01 |
EP3130805A4 (en) | 2018-01-10 |
WO2015155802A1 (en) | 2015-10-15 |
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