CN114981541A - Scroll compressor having a plurality of scroll members - Google Patents
Scroll compressor having a plurality of scroll members Download PDFInfo
- Publication number
- CN114981541A CN114981541A CN202080094189.9A CN202080094189A CN114981541A CN 114981541 A CN114981541 A CN 114981541A CN 202080094189 A CN202080094189 A CN 202080094189A CN 114981541 A CN114981541 A CN 114981541A
- Authority
- CN
- China
- Prior art keywords
- fixed
- scroll
- orbiting scroll
- pair
- orbiting
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims description 50
- 230000006835 compression Effects 0.000 claims description 28
- 238000007906 compression Methods 0.000 claims description 28
- 239000003507 refrigerant Substances 0.000 claims description 23
- 239000003921 oil Substances 0.000 description 45
- 238000007789 sealing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
-
- 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
- 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
- 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
The invention provides a scroll compressor, a pair of fixed side keys (17b) are formed on a ring surface of one side of a ring part (17a) through a base (17d), a pair of rotating side keys (17c) are formed on a ring surface of one side of the ring part (17a), the circumferential width (dw) of the base (17d) is formed to be larger than the circumferential width (bw) of the fixed side keys (17b), the radial width (cr) of the rotating side keys (17c) is formed to be larger than the radial width (ar) of the ring part (17a), and the radial inner end surface (17ci) of the rotating side keys (17c) protrudes than the inner circumferential surface (17ai) of the ring part (17 a). Thus, the scroll compressor with high rigidity of the key periphery part in the rotation limiting member (17) can be provided.
Description
Technical Field
The present invention relates to a scroll compressor used in a refrigerating apparatus such as a cooling and heating air conditioner or a refrigerator, or a refrigerating apparatus such as a heat pump water heater.
Background
Scroll compressors are used in refrigeration systems and air conditioning systems. In the scroll compressor, a gas refrigerant evaporated by an evaporator is sucked, the gas refrigerant is compressed to a pressure required for condensation in a condenser, and the high-temperature and high-pressure gas refrigerant is sent to a refrigerant circuit.
However, in the scroll compressor described in patent document 1, the oldham mechanism includes: a ring portion; a fixed side key part which is arranged on one side of the ring part in a protruding way and can be engaged with an Oldham guide groove formed on the fixed scroll in a reciprocating and sliding way; and a swing side key portion projecting from one surface side of the ring portion and engaging with an oldham guide groove formed in the swing scroll in a reciprocating sliding manner, wherein the fixed side key portion is arranged to be offset outward in the radial direction from the ring portion, and a relief portion for avoiding interference with the fixed side key portion is provided at a position facing the fixed side key portion in the inner peripheral surface of the guide frame.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-101985
Disclosure of Invention
Technical problem to be solved by the invention
However, in a large scroll compressor, there is a problem that the rigidity of the key peripheral portion of the rotation restricting member is insufficient.
Accordingly, an object of the present invention is to provide a scroll compressor in which the rigidity of the key peripheral portion of the rotation restricting member is high.
Means for solving the problems
A scroll compressor according to a first aspect of the present invention is a scroll compressor in which a compression mechanism 10 for compressing a refrigerant and an electric mechanism 20 for driving the compression mechanism 10 are disposed in a sealed container 1, the compression mechanism 10 includes a fixed scroll 11, an orbiting scroll 12, and a rotation shaft 13 for driving the orbiting scroll 12 so as to orbit the orbiting scroll 12, the fixed scroll 11 includes a disc-shaped fixed scroll end plate 11a and a fixed wrap 11b provided upright on the fixed scroll end plate 11a, and the orbiting scroll 12 includes: a circular plate-shaped orbiting scroll end plate 12 a; an orbiting wrap 12b provided upright on a tooth-side end surface of the orbiting scroll end plate 12 a; and a convex portion 12c formed on the opposite side of the wrap side end surface of the orbiting scroll end plate 12a, an eccentric shaft 13a capable of being inserted into the convex portion 12c is formed at the upper end of the rotating shaft 13, the fixed wrap 11b and the orbiting wrap 12b are engaged with each other, a plurality of compression chambers 15 are formed between the fixed wrap 11b and the orbiting wrap 12b, a main bearing 30 supporting the fixed scroll 11 and the orbiting scroll 12 is provided below the fixed scroll 11 and the orbiting scroll 12, a rotation restricting member 17 for restricting the rotation of the orbiting scroll 12 is provided between the fixed scroll 11 and the main bearing 30, and the main bearing 30 is formed with: a bearing portion 31 for pivotally supporting the rotary shaft 13; a projection receiving portion 32 for receiving the projection 12 c; and a rotation restricting member annular recess 34 in which the rotation restricting member 17 is disposed, the rotation restricting member 17 including: an annular ring portion 17 a; a pair of fixed-side keys 17b slidably engaged with a pair of fixed-side guide grooves 11d formed in the fixed scroll 11; and a pair of orbiting side keys 17c slidably engaged with a pair of orbiting side guide grooves 12d formed in the orbiting scroll 12, wherein the boss accommodating portion 32 is a high pressure region a, an outer peripheral portion of the orbiting scroll 12 where the rotation restricting member 17 is disposed is an intermediate pressure region B, and the orbiting scroll 12 is pressed against the fixed scroll 11 by pressures of the high pressure region a and the intermediate pressure region B, wherein the pair of fixed side keys 17B are formed on one ring surface of the ring portion 17a via a base 17d, the pair of orbiting side keys 17c are formed on the one ring surface of the ring portion 17a, a circumferential width dw of the base 17d is formed to be larger than a circumferential width bw of the fixed side key 17B, and a radial width cr of the orbiting side key 17c is formed to be larger than a radial width ar of the ring portion 17a, the radially inner end surface 17ci of the rotation side key 17c protrudes from the inner peripheral surface 17ai of the ring portion 17 a.
The present invention of the second aspect is the scroll compressor of the first aspect, wherein a radially outer end surface 17do of the base 17d is flush with an outer peripheral surface 17ao of the ring portion 17a, and a radially outer end surface 17bo of the fixed-side key 17b protrudes from the outer peripheral surface 17ao of the ring portion 17 a.
In the scroll compressor according to the third aspect of the present invention, the radially outer end surface 17do of the base 17d and the radially outer end surface 17bo of the fixed-side key 17b are flush with the outer peripheral surface 17ao of the ring portion 17a, a pair of relief portions 34x are formed on the outer peripheral surface 34o of the rotation restricting member annular recess 34, and the pair of relief portions 34x are located at positions corresponding to the fixed-side key 17 b.
Effects of the invention
According to the present invention, the rigidity of the fixed-side key and the rotating-side key in the rotation restricting member can be improved.
Drawings
FIG. 1 is a longitudinal sectional view of a scroll compressor in accordance with one embodiment of the present invention.
Fig. 2 is an enlarged sectional view of a main portion of the compression mechanism portion of fig. 1.
Fig. 3 is a plan view of the fixed scroll and the orbiting scroll shown in fig. 1 and 2.
Fig. 4 is a diagram showing a rotation restricting member according to the present embodiment.
Fig. 5 is a view showing a main bearing and a rotation restricting member according to the present embodiment.
Fig. 6 is a diagram showing a rotation restricting member according to another embodiment.
Fig. 7 is a view showing the main bearing and the rotation restricting member of the embodiment.
Detailed Description
In a scroll compressor according to a first embodiment of the present invention, a rotation restricting member includes: an annular ring portion; a pair of fixed-side keys slidably engaged with a pair of fixed-side guide grooves formed in the fixed scroll; and a pair of rotating side keys slidably engaged with a pair of rotating side guide grooves formed in the orbiting scroll, wherein a pair of fixed side keys are formed on one ring surface of the ring portion via a base, a pair of rotating side keys are formed on one ring surface of the ring portion, the circumferential width of the base is formed to be larger than the circumferential width of the fixed side keys, the radial width of the rotating side keys is formed to be larger than the radial width of the ring portion, and the radial inner end surface of the rotating side keys is protruded from the inner circumferential surface of the ring portion. According to the present embodiment, the rigidity of the fixed side key and the rotary side key can be improved.
In a second aspect of the present invention, in the scroll compressor of the first aspect, the radially outer end surface of the base and the outer peripheral surface of the ring portion are flush with each other, and the radially outer end surface of the fixed-side key is made to protrude beyond the outer peripheral surface of the ring portion. According to this embodiment, the rigidity of the fixed-side key can be further improved.
A third aspect of the present invention is the scroll compressor according to the first aspect, wherein the radially outer end surface of the base and the radially outer end surface of the fixed-side key are flush with the outer peripheral surface of the ring portion, and a pair of relief portions are formed on the outer peripheral surface of the annular recess for rotation restricting member, and the pair of relief portions are positioned at positions corresponding to the fixed-side key. According to this embodiment, the rigidity of the fixed-side key can be further improved.
Examples
Hereinafter, a scroll compressor according to an embodiment of the present invention will be described. The present invention is not limited to the following examples.
Fig. 1 is a longitudinal sectional view of the scroll compressor of the present embodiment.
In the closed casing 1 are disposed: a compression mechanism 10 for compressing a refrigerant; and an electric mechanism unit 20 for driving the compression mechanism unit 10.
The sealed container 1 includes a cylindrical trunk portion 1a formed to extend in the vertical direction, an upper cover 1c closing an upper opening of the trunk portion 1a, and a lower cover 1b closing a lower opening of the trunk portion 1 a.
The closed casing 1 is provided with: a refrigerant suction pipe 2 for introducing a refrigerant into the compression mechanism 10; and a refrigerant discharge pipe 3 for discharging the refrigerant compressed by the compression mechanism 10 to the outside of the closed casing 1.
The compression mechanism 10 includes a fixed scroll 11, an orbiting scroll 12, and a rotary shaft 13 for rotationally driving the orbiting scroll 12.
The electric mechanism 20 includes a stator 21 fixed to the sealed container 1 and a rotor 22 disposed inside the stator 21. The rotary shaft 13 is fixed to the rotor 22. An eccentric shaft 13a eccentric with respect to the rotary shaft 13 is formed at the upper end of the rotary shaft 13.
A main bearing 30 for supporting the fixed scroll 11 and the orbiting scroll 12 is provided below the fixed scroll 11 and the orbiting scroll 12.
The main bearing 30 is formed with a bearing portion 31 for supporting the rotation shaft 13, a convex portion housing portion 32, an annular concave portion 33 for sealing, and an annular concave portion 34 for a rotation limiting member. The main bearing 30 is fixed to the hermetic container 1 by welding or shrink fitting.
The fixed scroll 11 includes: a disc-shaped fixed scroll end plate 11 a; a fixed wrap 11b provided upright on the fixed scroll end plate 11 a; and an outer peripheral wall portion 11c that is provided so as to stand so as to surround the periphery of the fixed wrap 11b, and a discharge port 14 is formed in a substantially central portion of the fixed scroll end plate 11 a.
The orbiting scroll 12 has: a disc-shaped orbiting scroll end plate 12 a; an orbiting wrap 12b provided upright on a tooth-side end surface of the orbiting scroll end plate 12 a; a cylindrical projection 12c (which can be used as a boss) is formed from the tooth-side end surface of the orbiting scroll end plate 12a to the opposite side.
The fixed wrap 11b of the fixed scroll 11 and the orbiting wrap 12b of the orbiting scroll 12 are engaged with each other, and a plurality of compression chambers 15 are formed between the fixed wrap 11b and the orbiting wrap 12 b.
A boss 12c is formed substantially at the center of the orbiting scroll end plate 12 a. The eccentric shaft 13a is inserted into the boss 12c, and the boss 12c is received in the boss receiving portion 32.
The fixed scroll 11 is fixed to the main bearing 30 at the outer peripheral wall 11c by a plurality of bolts 16. On the other hand, the orbiting scroll 12 is supported by the fixed scroll 11 via a rotation restricting member 17 such as an oldham ring (e.g., oldham ring). The rotation restricting member 17 for restricting rotation of the orbiting scroll 12 is disposed in the rotation restricting member annular recess 34 and provided between the fixed scroll 11 and the main bearing 30. Thereby, the orbiting scroll 12 orbits with respect to the fixed scroll 11 without rotating.
The lower end 13b of the rotating shaft 13 is supported by a sub-bearing 18 disposed at the lower part of the sealed container 1.
An oil reservoir 4 for storing lubricating oil is formed in the bottom of the sealed container 1.
A positive displacement oil pump 5 is provided at the lower end of the rotary shaft 13. The oil pump 5 is disposed such that its suction port is present in the oil reservoir 4. The oil pump 5 is driven by the rotary shaft 13. The oil pump 5 can reliably pump up the lubricating oil present in the oil reservoir 4 provided at the bottom of the closed casing 1 regardless of the pressure condition and the operating speed, and therefore, the fear of oil cut can be eliminated.
The rotary shaft 13 is formed with a rotary shaft oil supply hole 13c extending from the lower end 13b of the rotary shaft 13 to the eccentric shaft 13 a.
The lubricating oil pumped up by the oil pump 5 is supplied to the bearings of the sub-bearing 18, the bearing portion 31, and the convex portion 12c via the rotating shaft oil supply hole 13c formed in the rotating shaft 13.
The refrigerant sucked from the refrigerant suction pipe 2 is introduced into the compression chamber 15 through the suction port 15 a. The compression chamber 15 moves from the outer peripheral side to the center portion while reducing the volume, and the refrigerant reaching a predetermined pressure in the compression chamber 15 is discharged from the discharge port 14 provided at the center portion of the fixed scroll 11 to the discharge chamber 6. A discharge reed valve (not shown) is provided in the discharge port 14. The refrigerant having reached a predetermined pressure in the compression chamber 15 pushes open the discharge reed valve and is discharged into the discharge chamber 6. The refrigerant discharged to the discharge chamber 6 is guided to an upper portion in the closed casing 1, passes through a refrigerant passage (not shown) formed in the compression mechanism 10, reaches the periphery of the electric mechanism 20, and is discharged from the refrigerant discharge pipe 3.
Fig. 2 is an enlarged sectional view of a main portion of the compression mechanism of fig. 1.
According to the scroll compressor of the present embodiment, the boss accommodating portion 32 is a high-pressure region a, the outer peripheral portion of the orbiting scroll 12 on which the rotation restricting member 17 is disposed is an intermediate-pressure region B, and the orbiting scroll 12 is pressed against the fixed scroll 11 by the pressures of the high-pressure region a and the intermediate-pressure region B.
The eccentric shaft 13a is rotatably driven inserted into the boss 12c via a rotary bearing 13 d. An oil groove 13e is formed in the outer peripheral surface of the eccentric shaft 13 a.
The annular sealing recess 33 is formed in a thrust surface of the main bearing 30 that receives the thrust of the orbiting scroll plate 12 a. The rotation restricting member annular recess 34 is formed on the outer periphery of the thrust surface of the main bearing 30. An annular seal member 33a is provided in the annular seal recess 33. The sealing member 33a is disposed on the outer periphery of the convex portion housing portion 32.
The sealed container 1 is filled with the same high-pressure refrigerant as the refrigerant discharged to the discharge chamber 6, and the rotating shaft oil supply hole 13c opens at the upper end of the eccentric shaft 13a, so that the pressure in the convex portion 12c becomes a high-pressure region a equivalent to the pressure of the discharged refrigerant.
The lubricating oil introduced into the convex portion 12c through the rotary shaft oil supply hole 13c is supplied to the rotary bearing 13d and the convex portion housing portion 32 by the oil groove 13e formed on the outer peripheral surface of the eccentric shaft 13 a. Since the seal member 33a is provided on the outer periphery of the convex portion housing portion 32, the convex portion housing portion 32 is a high-pressure region a.
The fixed scroll plate 11a is provided with: an intermediate pressure take-out hole 41 for taking out the intermediate pressure in the compression chamber 15; and an end plate side intermediate pressure connecting passage 42a communicating with the intermediate pressure take-out hole 41.
The outer peripheral wall 11c of the fixed scroll 11 is provided with a peripheral wall-side intermediate interconnecting passage 42B that connects the end plate-side intermediate interconnecting passage 42a to the intermediate pressure region B.
The intermediate pressure connecting passage 42 is formed by the end plate side intermediate pressure connecting passage 42a and the peripheral wall side intermediate pressure connecting passage 42 b. The intermediate pressure connecting passage 42 is formed in the fixed scroll 11 and connects the intermediate pressure take-out hole 41 to the intermediate pressure region B.
In this way, the intermediate pressure connecting passage 42 that connects the intermediate pressure take-out hole 41 and the intermediate pressure region B is formed in the fixed scroll 11, and the intermediate pressure of the compression chamber 15 is guided to the intermediate pressure region B. This prevents the orbiting scroll 12 from separating from the fixed scroll 11 particularly under low compression ratio conditions, and improves the airtightness of the compression chamber 15.
The orbiting scroll end plate 12a is provided with: a first oil introduction hole 51 formed in the convex portion 12 c; a first oil outlet hole 52 formed in the outer periphery of the tooth-side end surface; and a first end plate oil communication passage 53 that communicates the first oil introduction hole 51 with the first oil delivery hole 52.
Further, the orbiting scroll plate 12a is provided with: a second oil introduction hole 61 opened in the intermediate pressure region B; a second oil outlet hole 62 opened in the low-pressure space of the compression chamber 15; and a second end plate oil communication passage 63 that communicates the second oil introduction hole 61 with the second oil lead-out hole 62. A second oil introduction hole 61 is formed in a side surface of the orbiting scroll end plate 12 a.
Fig. 3 is a plan view of the fixed scroll and the orbiting scroll shown in fig. 1 and 2.
Fig. 3 (a) is a plan view of the fixed scroll of the present embodiment as viewed from the fixed wrap side, and fig. 3 (b) is a plan view of the orbiting scroll of the present embodiment as viewed from the orbiting wrap side.
The intermediate pressure region B is represented by a gray area in fig. 3 (a). As shown, the middle pressure region B is formed at the outer periphery of the fixed wrap 11B.
As shown in fig. 3 (a), the fixed scroll 11 is provided with a pair of fixed-side guide grooves 11 d.
The fixed scroll 11 is provided with a fixed scroll sliding surface 11e which is in sliding contact with an orbiting scroll end plate 12a shown in fig. 3 (b). The orbiting scroll end plate 12a is located on the outer periphery of the orbiting wrap 12 b. The intermediate pressure region B is formed closer to the outer periphery than the fixed scroll sliding surface 11 e.
The fixed scroll sliding surface 11e is provided with a sliding surface groove 54 communicating with the intermediate pressure region B.
As shown in fig. 3 (b), the first oil delivery hole 52 and the second oil delivery hole 62 are opened in the outer periphery of the tooth-side end surface of the orbiting scroll end plate 12a, and a pair of orbiting-side guide grooves 12d are formed in the orbiting scroll 12.
According to the scroll compressor of the present embodiment, the orbiting scroll 12 is pressed against the fixed scroll 11 by forming the high pressure region a and the intermediate pressure region B. Therefore, the tooth-side end surface of the orbiting scroll end plate 12a can be maintained in close contact with the stationary scroll sliding surface 11e without being opposed thereto. Therefore, the oil amount can be adjusted by the first oil outlet hole 52 and the sliding surface groove 54, and the oil amount can be easily adjusted.
In the scroll compressor of the present embodiment, the eccentric shaft center of the eccentric shaft 13a applies the largest centrifugal force to the lubricant oil present in the convex portion 12c at the rotation position closest to the sliding surface groove 54. Therefore, when the maximum centrifugal force is applied to the lubricant oil present in the convex portion 12c, the lubricant oil can be reliably introduced into the sliding surface groove 54 by communicating the first oil outlet hole 52 with the sliding surface groove 54.
Fig. 4 is a view showing the rotation restricting member of the present embodiment, in which fig. 4 (a) is a plan view of the rotation restricting member, fig. 4 (B) is a sectional view taken along line B-B of fig. 4 (a), fig. 4 (C) is a sectional view taken along line C-C of fig. 4 (a), and fig. 4 (d) is a perspective view of the rotation restricting member.
The rotation restricting member 17 includes: an annular ring portion 17 a; a pair of fixed-side keys 17b slidably engaged with a pair of fixed-side guide grooves 11d formed in the fixed scroll 11; a pair of rotation side keys 17c slidably engaged with a pair of rotation side guide grooves 12d formed in the orbiting scroll 12.
The pair of fixed-side keys 17b are formed on one ring surface of the ring portion 17a via a base 17 d.
A pair of rotating side keys 17c are formed on one annular surface of the ring portion 17 a.
The circumferential width dw of the base 17d is formed larger than the circumferential width bw of the fixed-side key 17 b. Further, the radial width cr of the rotation side key 17c is formed larger than the radial width ar of the ring portion 17 a. Further, the radially inner end surface 17ci of the rotation side key 17c protrudes beyond the inner peripheral surface 17ai of the ring portion 17 a.
In this way, the fixed side key 17b is formed on one annular surface of the ring portion 17a via the seat 17d, and the circumferential width dw of the seat 17d is formed to be larger than the circumferential width bw of the fixed side key 17b, so that the rigidity of the fixed side key 17b can be improved.
Further, the radial width cr of the rotary key 17c is made larger than the radial width ar of the ring portion 17a, and the radial inner end surface 17ci of the rotary key 17c is made to protrude from the inner peripheral surface 17ai of the ring portion 17a, whereby the rigidity of the rotary key 17c can be improved.
In the present embodiment, the radially outer end surface 17do of the base 17d is flush with the outer peripheral surface 17ao of the ring portion 17a, and the radially outer end surface 17bo of the fixed-side key 17b is made to protrude beyond the outer peripheral surface 17ao of the ring portion 17 a.
In this manner, the radially outer end surface 17do of the base 17d is flush with the outer peripheral surface 17ao of the ring portion 17a, and the radially outer end surface 17bo of the fixing side key 17b is projected beyond the outer peripheral surface 17ao of the ring portion 17a, whereby the rigidity of the fixing side key 17b can be further improved.
Further, the radially inner end surface 17di of the seat 17d is flush with the radially inner end surface 17bi of the fixed side key 17b, and the radially outer end surface 17co of the rotary side key 17c is flush with the outer peripheral surface 17ao of the ring portion 17 a.
Fig. 5 is a view showing a main bearing and a rotation restricting member according to the present embodiment, where fig. 5 (a) is a top view of the main bearing, and fig. 5 (b) is a top view showing a state where the rotation restricting member is disposed in the main bearing.
The rotation restricting member 17 is disposed in the rotation restricting member annular recess 34 of the main bearing 30. The radially outer end surface 17bo of the fixed side key 17b does not abut against the outer peripheral surface 34o of the rotation restricting member annular recess 34 so that the outer peripheral surface 17ao of the ring portion 17a and the radially outer end surface 17do of the pedestal 17d do not abut against the outer peripheral surface 34o of the rotation restricting member annular recess 34 but have a slight gap. That is, the ring portion 17a and the pedestal 17d are disposed at a position lower than the thrust surface of the main bearing 30, and the fixed-side key 17b is disposed at a position higher than the thrust surface of the main bearing 30.
Fig. 6 is a diagram showing a rotation restricting member according to another embodiment, and fig. 7 is a diagram showing a main bearing and a rotation restricting member according to this embodiment. Fig. 6(a) is a plan view of the rotation restricting member, fig. 6 (B) is a B-B sectional view of fig. 6(a), fig. 6 (C) is a C-C sectional view of fig. 6(a), fig. 6 (d) is a perspective view of the rotation restricting member, fig. 7 (a) is a top view of the main bearing, and fig. 7 (B) is a top view showing a state in which the rotation restricting member is disposed on the main bearing.
The rotation restricting member 17 includes: an annular ring portion 17 a; a pair of fixed-side keys 17b slidably engaged with a pair of fixed-side guide grooves 11d formed in the fixed scroll 11; and a pair of rotation-side keys 17c slidably engaged with a pair of rotation-side guide grooves 12d formed in the orbiting scroll 12.
The pair of fixed-side keys 17b are formed on one ring surface of the ring portion 17a via a base 17 d.
A pair of rotating side keys 17c are formed on one annular surface of the ring portion 17 a.
The circumferential width dw of the base 17d is formed larger than the circumferential width bw of the fixed-side key 17 b. Further, the radial width cr of the rotation side key 17c is formed larger than the radial width ar of the ring portion 17 a. Further, the radially inner end surface 17ci of the rotation side key 17c is made to protrude from the inner peripheral surface 17ai of the ring portion 17 a.
In this way, the fixed side key 17b is formed on one annular surface of the ring portion 17a via the base 17d, and the circumferential width dw of the base 17d is formed to be larger than the circumferential width bw of the fixed side key 17b, so that the rigidity of the fixed side key 17b can be improved.
Further, by forming the radial width cr of the rotary key 17c to be larger than the radial width ar of the ring portion 17a and projecting the radial inner end surface 17ci of the rotary key 17c from the inner peripheral surface 17ai of the ring portion 17a, the rigidity of the rotary key 17c can be improved.
The rotation restricting member 17 is disposed in the rotation restricting member annular recess 34 of the main bearing 30.
In the present embodiment, the radially outer end surface 17do of the base 17d and the radially outer end surface 17bo of the fixed-side key 17b are formed on the same plane as the outer peripheral surface 17ao of the ring portion 17a, and a pair of relief portions 34x are formed on the outer peripheral surface 34o of the rotation restricting member annular recess 34. The pair of escape portions 34x are located at positions corresponding to the fixed-side keys 17 b. Since the ring portion 17a and the pedestal 17d are disposed at a position lower than the thrust surface of the main bearing 30 and the fixed-side key 17b is disposed at a position higher than the thrust surface of the main bearing 30, the outer peripheral surface 17ao of the ring portion 17a and the radially outer end surface 17do of the pedestal 17d are located at the escape portion 34x of the rotation restricting member annular recess 34.
In this manner, by forming the radially outer end surface 17do of the base 17d and the radially outer end surface 17bo of the fixed side key 17b on the same plane as the outer peripheral surface 17ao of the ring portion 17a, the pair of relief portions 34x are positioned at positions corresponding to the fixed side key 17b, and the rigidity of the fixed side key 17b can be further improved.
Further, the radially inner end surface 17di of the base 17d is formed on the same plane as the radially inner end surface 17bi of the fixed side key 17b, and the radially outer end surface 17co of the rotating side key 17c is formed on the same plane as the outer peripheral surface 17ao of the ring portion 17 a.
Industrial applicability
The scroll compressor of the present invention is useful in a refrigeration cycle apparatus such as a hot water heating apparatus, an air conditioner, a water heater, or a refrigerator.
Description of reference numerals
1 closed container
1a trunk part
1b lower cover
1c Upper cover
2 refrigerant suction pipe
3 refrigerant discharge pipe
4 oil storage part
5 oil pump
6 discharge chamber
10 compression mechanism part
11 fixed scroll
11a fixed scroll end plate
11b fixed scroll wrap
11c outer peripheral wall portion
11d fixed side guide groove
11e fixed scroll sliding surface
12 orbiting scroll
12a orbiting scroll end plate
12b orbiting scroll wrap
12c convex part
12d rotary side guide groove
13 rotating shaft
13a eccentric shaft
13b lower end portion
13c rotating shaft oil supply hole
13d swivel bearing
13e oil groove
14 discharge port
15 compression chamber
15a suction inlet
16 bolt
17 rotation restricting member
17a ring part
17ai inner peripheral surface
17ao peripheral surface
17b fixed side key
17bi radial inner end face
17bo radial outer end face
17c rotary side key
17ci radial inner end surface
17co radial outer end face
17d base
18 pairs of bearings
20 electric mechanism part
21 stator
22 rotor
30 main bearing
31 bearing part
32 convex portion accommodating portion
33 annular recess for sealing
33a sealing member
34 annular recess for rotation restricting member
34o peripheral surface
34x escape part
41 middle pressure taking-out hole
42 intermediate pressure connection
42a end plate side intermediate pressure connecting passage
42b peripheral wall side intermediate pressure connecting passage
51 first oil introduction hole
52 first oil outlet hole
53 first end plate oil communicating path
54 sliding surface groove
61 second oil introduction hole
62 second oil outlet hole
63 second end plate oil communication path
A high pressure region
B middle pressure area
ar radial width
bw circumferential width
cr radial width
dw circumferential width.
Claims (3)
1. A scroll compressor characterized by:
a compression mechanism for compressing a refrigerant and an electric mechanism for driving the compression mechanism are disposed in a closed container,
the compression mechanism portion has a fixed scroll, an orbiting scroll, and a rotary shaft for driving the orbiting scroll so as to orbit the orbiting scroll,
the fixed scroll has a disc-shaped fixed scroll end plate and a fixed wrap provided upright on the fixed scroll end plate,
the orbiting scroll has: a disc-shaped orbiting scroll end plate; an orbiting scroll lap vertically provided on a tooth-side end surface of the orbiting scroll end plate; and a boss formed from the tip surface of the orbiting scroll toward the opposite side,
an eccentric shaft capable of being inserted into the boss is formed at an upper end of the rotating shaft,
the fixed wrap and the orbiting wrap intermesh to form a plurality of compression chambers between the fixed wrap and the orbiting wrap,
a main bearing for supporting the fixed scroll and the orbiting scroll is provided below the fixed scroll and the orbiting scroll,
a rotation restricting member for restricting rotation of the orbiting scroll is provided between the fixed scroll and the main bearing,
the main bearing is provided with: a bearing portion that pivotally supports the rotary shaft; a projection receiving portion for receiving the projection; and a rotation restricting member annular recess in which the rotation restricting member is disposed,
the rotation restricting member includes: an annular ring portion; a pair of fixed-side keys slidably engaged with a pair of fixed-side guide grooves formed in the fixed scroll; and a pair of rotation-side keys slidably engaged with a pair of rotation-side guide grooves formed in the orbiting scroll,
the boss receiving portion is a high pressure region, an outer peripheral portion of the orbiting scroll where the rotation restricting member is disposed is an intermediate pressure region,
the orbiting scroll is pressed against the fixed scroll by the pressures of the high pressure region and the intermediate pressure region,
in the above-mentioned scroll compressor, a scroll compressor,
a pair of the fixed side keys are formed on one ring surface of the ring part through a base,
a pair of said rotary side keys are formed on said ring surface of said one of said ring portions,
the circumferential width of the base is formed larger than the circumferential width of the fixed-side key,
a radial width of the rotation side key is formed larger than a radial width of the ring portion,
the radially inner end surface of the rotation side key protrudes from the inner peripheral surface of the ring portion.
2. The scroll compressor of claim 1, wherein:
the radial outer end surface of the base and the outer peripheral surface of the ring part are on the same plane,
a radially outer end surface of the fixed-side key protrudes beyond the outer peripheral surface of the ring portion.
3. The scroll compressor of claim 1, wherein:
the radial outer end surface of the base and the radial outer end surface of the fixed side key are on the same plane with the outer peripheral surface of the ring part,
a pair of escape portions are formed on an outer peripheral surface of the rotation restricting member annular recess,
the pair of escape portions is located at positions corresponding to the fixed side keys.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020010166A JP2021116731A (en) | 2020-01-24 | 2020-01-24 | Scroll compressor |
| JP2020-010166 | 2020-01-24 | ||
| PCT/JP2020/035764 WO2021149303A1 (en) | 2020-01-24 | 2020-09-23 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114981541A true CN114981541A (en) | 2022-08-30 |
Family
ID=76993232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080094189.9A Pending CN114981541A (en) | 2020-01-24 | 2020-09-23 | Scroll compressor having a plurality of scroll members |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4095385A4 (en) |
| JP (1) | JP2021116731A (en) |
| CN (1) | CN114981541A (en) |
| WO (1) | WO2021149303A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865131A (en) * | 2009-02-20 | 2010-10-20 | 三洋电机株式会社 | Scroll compressor |
| CN103109089A (en) * | 2010-09-21 | 2013-05-15 | 法雷奥日本株式会社 | Scroll type compressor |
| CN204299873U (en) * | 2013-11-22 | 2015-04-29 | 三菱电机株式会社 | Scroll compressor |
| JP2018141444A (en) * | 2017-02-28 | 2018-09-13 | サンデン・エンバイロメントプロダクツ株式会社 | Oldham joint structure, scroll compressor and refrigeration cycle system |
| CN209164082U (en) * | 2018-11-29 | 2019-07-26 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
| CN110234880A (en) * | 2017-01-27 | 2019-09-13 | 松下知识产权经营株式会社 | Scroll compressor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2758193B2 (en) * | 1989-02-28 | 1998-05-28 | 株式会社東芝 | Scroll fluid machinery and Oldham couplings for scroll fluid machinery |
| JP2003035282A (en) * | 2001-07-19 | 2003-02-07 | Mitsubishi Heavy Ind Ltd | Scroll type fluid machine |
| JP2008101599A (en) * | 2006-09-21 | 2008-05-01 | Daikin Ind Ltd | Rotation preventing member, scroll compressor, and movable scroll component |
| KR20130034538A (en) * | 2011-09-28 | 2013-04-05 | 엘지전자 주식회사 | Scroll compressor |
| CN203627233U (en) * | 2013-11-01 | 2014-06-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Cross slide ring as well as scroll compressor with same, air conditioner and heat pump water heater with same |
-
2020
- 2020-01-24 JP JP2020010166A patent/JP2021116731A/en active Pending
- 2020-09-23 CN CN202080094189.9A patent/CN114981541A/en active Pending
- 2020-09-23 WO PCT/JP2020/035764 patent/WO2021149303A1/en unknown
- 2020-09-23 EP EP20914982.2A patent/EP4095385A4/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865131A (en) * | 2009-02-20 | 2010-10-20 | 三洋电机株式会社 | Scroll compressor |
| CN103109089A (en) * | 2010-09-21 | 2013-05-15 | 法雷奥日本株式会社 | Scroll type compressor |
| CN204299873U (en) * | 2013-11-22 | 2015-04-29 | 三菱电机株式会社 | Scroll compressor |
| CN110234880A (en) * | 2017-01-27 | 2019-09-13 | 松下知识产权经营株式会社 | Scroll compressor |
| JP2018141444A (en) * | 2017-02-28 | 2018-09-13 | サンデン・エンバイロメントプロダクツ株式会社 | Oldham joint structure, scroll compressor and refrigeration cycle system |
| CN209164082U (en) * | 2018-11-29 | 2019-07-26 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4095385A4 (en) | 2023-07-19 |
| EP4095385A1 (en) | 2022-11-30 |
| WO2021149303A1 (en) | 2021-07-29 |
| JP2021116731A (en) | 2021-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6773242B1 (en) | Scroll compressor with vapor injection | |
| WO2007023599A1 (en) | Refrigerating air conditioner | |
| US8419395B2 (en) | Compressor and refrigeration apparatus | |
| CN110234880B (en) | Scroll compressor having a discharge port | |
| CN113330218B (en) | Scroll compressor having a discharge port | |
| US11703052B2 (en) | High pressure scroll compressor | |
| CN106168212B (en) | Scroll compressor having a discharge port | |
| CN110234881B (en) | Scroll compressor having a discharge port | |
| US11231035B2 (en) | Scroll compressor | |
| CN110998094B (en) | Scroll compressor having a discharge port | |
| EP3575605B1 (en) | Hermetic compressor | |
| CN114981541A (en) | Scroll compressor having a plurality of scroll members | |
| US11015600B2 (en) | Scroll compressor having sub-discharge port with involute-shaped opening | |
| WO2004010001A1 (en) | Scroll compressor | |
| CN218542593U (en) | Scroll compressor having a plurality of scroll members | |
| JP2002317784A (en) | Rotary two-stage compressor | |
| WO2024070389A1 (en) | Scroll compressor | |
| EP0918160B1 (en) | Compressor | |
| CN113454341B (en) | Scroll compressor having a discharge port | |
| EP4102074A1 (en) | Scroll compressor | |
| JP7486149B2 (en) | Scroll Compressor | |
| EP3726058A1 (en) | Motor operated compressor | |
| WO2022264792A1 (en) | Scroll compressor | |
| CN217999869U (en) | Scroll compressor and refrigeration device | |
| WO2022080179A1 (en) | Compressor and refrigeration cycle apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |