CN114829776A - Scroll compressor having a discharge port - Google Patents
Scroll compressor having a discharge port Download PDFInfo
- Publication number
- CN114829776A CN114829776A CN202080086898.2A CN202080086898A CN114829776A CN 114829776 A CN114829776 A CN 114829776A CN 202080086898 A CN202080086898 A CN 202080086898A CN 114829776 A CN114829776 A CN 114829776A
- Authority
- CN
- China
- Prior art keywords
- annular portion
- scroll
- communication passage
- oldham ring
- scroll compressor
- 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
- 239000003507 refrigerant Substances 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 2
- 239000010721 machine oil Substances 0.000 abstract description 39
- 230000000694 effects Effects 0.000 description 14
- 239000003921 oil Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression 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
Abstract
The invention provides a scroll compressor, which is provided with an oldham ring (17) for preventing the rotation of an orbiting scroll, wherein the oldham ring (17) is provided with an upper annular part communicating channel (17d) which enables the inner periphery and the outer periphery of an annular part (17a) to communicate on the axial upper surface of the annular part (17 a). As a result, the contact surface of the oldham ring (17) and the bearing component or the orbiting scroll which is in contact with the oldham ring (17) is reduced, thereby reducing the sliding loss, and the fluidity of the refrigerating machine oil existing around the oldham ring (17) is improved, thereby reducing the viscous resistance, thereby realizing the high-efficiency scroll compressor.
Description
Technical Field
The present invention particularly relates to a scroll compressor used in a refrigerator such as an air conditioner, a water heater, or a refrigerator.
Background
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-130101
Disclosure of Invention
Technical problem to be solved by the invention
The invention provides a scroll compressor which uses a cross slip ring and further promotes high efficiency.
The scroll compressor of the present invention is configured to have an oldham ring for preventing the orbiting scroll from rotating, and the oldham ring is provided with a ring-shaped portion communication passage for communicating an inner periphery and an outer periphery of the ring-shaped portion at least one of an axially upper surface and an axially lower surface of the ring-shaped portion.
Drawings
Fig. 1 is a longitudinal sectional view of a scroll compressor according to embodiment 1.
Fig. 2 is a plan view showing a fixed scroll of the scroll compressor.
Fig. 3 is a rear view showing an orbiting scroll of the scroll compressor.
Fig. 4 is a plan view showing the oldham ring of the scroll compressor.
Fig. 5 is a side view showing the oldham ring of the scroll compressor.
Detailed Description
(knowledge and the like on which the present invention is based)
In the case where the inventors have conceived of the present invention, as described in patent document 1, the scroll compressor uses the oldham ring to prevent the orbiting scroll from rotating, but a sliding loss is generated between the oldham ring and the bearing member or the orbiting scroll. Further, the refrigerating machine oil is present in the vicinity of the oldham ring, and resistance due to viscosity of the refrigerating machine oil hinders the efficiency of the compressor. Therefore, the inventors have found that, in order to improve the efficiency of the compressor, it is necessary to reduce the sliding loss between the oldham ring and the bearing member or the orbiting scroll and also to reduce the viscous resistance of the refrigerating machine oil, and have completed the subject of the present invention.
The invention provides a scroll compressor, which reduces the sliding loss between an Oldham ring and a bearing component or an orbiting scroll, reduces the viscous resistance of refrigerating machine oil and improves the efficiency.
Hereinafter, embodiments will be described in detail with reference to the drawings. However, a detailed description thereof may be omitted to the extent necessary. For example, a detailed description of already known matters or a repetitive description of substantially the same configuration may be omitted. This is to avoid redundancy beyond what is necessary for the following description, and to facilitate understanding by those skilled in the art.
In addition, the drawings and the following description are provided for those skilled in the art to sufficiently understand the present invention, and are not intended to limit the subject matter described in the scope of claims.
(embodiment mode 1)
[1-1. Structure ]
As shown in fig. 1, the scroll compressor 100 is configured by disposing a compression mechanism 10 for compressing a refrigerant and an electric mechanism 20 for driving the compression mechanism 10 in a closed casing 1.
The sealed container 1 includes a cylindrical trunk portion 1a formed to extend in the vertical direction, a lower lid 1b closing a lower opening of the trunk portion 1a, and an upper lid 1c closing an upper opening of the trunk portion 1 a.
The closed casing 1 is provided with a refrigerant suction pipe 2 for introducing the refrigerant into the compression mechanism section 10, and a refrigerant discharge pipe 3 for discharging the refrigerant compressed in the compression mechanism section 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 driving the orbiting scroll 12 to orbit.
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 includes a bearing portion 31 for pivotally supporting the rotary shaft 13 and a boss accommodating portion 32. The main bearing 30 is fixed to the hermetic container 1 by welding, shrink fitting, or the like. The lower end 13b of the rotary shaft 13 is pivotally supported by a sub-bearing 18 disposed at the lower portion of the sealed container 1.
The fixed scroll 11 includes: a disc-shaped fixed scroll end plate 11 a; a spiral fixed wrap 11b provided upright from the fixed scroll end plate 11 a; and an outer peripheral wall portion 11c provided upright so as to surround the periphery of the fixed wrap 11 b. A discharge port 14 is formed in a substantially central portion of the fixed scroll plate 11 a.
The orbiting scroll 12 includes: a circular plate-shaped orbiting scroll end plate 12 a; an orbiting wrap 12b provided upright from a winding-side end surface of the orbiting scroll end plate 12 a; and a cylindrical boss portion 12c formed on a reverse-winding-side end surface of the orbiting scroll end plate 12a (a surface of the orbiting scroll end plate 12a opposite to the winding-side end surface). An oldham ring 17 for preventing the orbiting scroll 12 from rotating is disposed on the back surface of the orbiting scroll end plate 12 a.
The fixed wrap 11b of the fixed scroll 11 and the orbiting wrap 12b of the orbiting scroll 12 mesh with each other, and a plurality of compression chambers 15 are formed between the fixed wrap 11b and the orbiting wrap 12 b.
The boss portion 12c is formed substantially at the center of the orbiting scroll end plate 12 a. The eccentric shaft 13a is inserted into the boss portion 12c, and the boss portion 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 portion 11c using a plurality of bolts (not shown). On the other hand, the orbiting scroll 12 is supported by the fixed scroll 11 via an oldham ring 17 that prevents the orbiting scroll 12 from rotating. An oldham ring 17 for preventing the orbiting scroll 12 from rotating is 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.
An oil reservoir 4 for storing lubricating oil is formed in the bottom of the sealed container 1. A positive displacement type refrigerating machine oil pump 5 is provided at the lower end of the rotary shaft 13. The refrigerator oil pump 5 is disposed such that a suction port of the refrigerator oil pump 5 is present in the oil reservoir 4. The refrigerator oil pump 5 is driven by the rotary shaft 13, and the lubricating oil present in the oil reservoir 4 provided at the bottom of the closed casing 1 is reliably pumped up regardless of the pressure condition and the operating speed, so that the fear of the refrigerator oil running out can be eliminated.
A rotary shaft refrigerating machine oil supply hole 13c is formed in the rotary shaft 13 from the lower end portion 13b of the rotary shaft 13 to the eccentric shaft 13 a.
The lubricating oil pumped up by the refrigerator oil pump 5 is supplied to the bearing of the sub-bearing 18, the bearing portion 31, and the boss portion 12c through the rotary shaft refrigerator oil supply hole 13c formed in the rotary 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 compressing the volume. The refrigerant having reached a predetermined pressure in the compression chamber 15 is discharged from a discharge port 14 provided at the center 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 the refrigerant is discharged into the discharge chamber 6. The refrigerant discharged into the discharge chamber 6 is guided to the upper portion in the closed casing 1 and discharged from the refrigerant discharge pipe 3.
Fig. 2 to 5 show a rotation preventing mechanism for preventing the orbiting scroll 12 from rotating. The rotation preventing mechanism is composed of: a fixed scroll key groove 11e (see fig. 2) provided on the fixed scroll upper surface 11d of the fixed scroll 11; an orbiting scroll key groove 12e (see fig. 3) provided on an orbiting scroll back surface 12d of the orbiting scroll 12; and an oldham ring 17 shown in fig. 4 and 5.
As shown in fig. 4, the oldham ring 17 includes an annular portion 17a, a 1 st key portion 17b, and a 2 nd key portion 17 c. In the example of the present embodiment, the 1 st key portion 17b is a pair of key portions disposed on the axial upper surface of the annular portion 17a and protruding in the axial direction of the annular portion 17 a. The 2 nd key portion 17c is another pair of key portions disposed on the axial upper surface of the annular portion 17a and protruding in the axial direction of the annular portion 17 a. The 1 st key 17b is fitted in the fixed scroll key groove 11e and slides with respect to the fixed scroll key groove 11 e. The 2 nd key portion 17c is fitted in the orbiting scroll key groove 12e and slides with respect to the orbiting scroll key groove 12 e. The axially upper surface of the annular portion 17a slides with respect to the orbiting scroll back surface 12d, and the axially lower surface of the annular portion 17a slides with respect to the bearing portion 31.
As shown in fig. 4 and 5, an upper annular portion communication passage 17d that communicates the inner periphery and the outer periphery of the annular portion 17a is formed in the axial upper surface of the annular portion 17a of the oldham ring 17. A lower annular portion communication passage 17e (indicated by a broken line in fig. 4) that communicates the inner periphery and the outer periphery of the annular portion 17a is formed in the axially lower surface of the annular portion 17a of the oldham ring 17. The 1 st key portion 17b or the 2 nd key portion 17c of the annular portion 17a of the oldham ring 17, or both the 1 st key portion 17b and the 2 nd key portion 17c are formed with a key portion communication passage 17f (see fig. 5) that communicates the inner periphery and the outer periphery of the key portion.
The upper annular portion communication passage 17d of the oldham ring 17 is formed substantially parallel to a direction in which the pair of 2 nd key portions 17c are linearly connected. The lower annular portion communication passage 17e is formed substantially parallel to a direction in which the pair of first key portions 17b are linearly connected. That is, the upper annular portion communication passage 17d and the lower annular portion communication passage 17e are formed substantially parallel to the traveling direction of the oldham ring 17.
In the example of the present embodiment, the upper annular portion communication passage 17d and the lower annular portion communication passage 17e provided in the annular portion 17a of the oldham ring 17 are formed such that the relationship between the depth Du of the deepest portion of the upper annular portion communication passage 17d and the depth Dd of the deepest portion of the lower annular portion communication passage 17e is Du < Dd. In this embodiment, the lower annular portion communication passage 17e is formed such that Dt/10 ≦ Dd ≦ Dt/2 is set to the depth Dd of the deepest portion of the lower annular portion communication passage 17e, with respect to the thickness Dt of the thinnest portion of the annular portion 17a excluding the portion where the communication passage (では, the upper annular portion communication passage 17d, and the lower annular portion communication passage 17e) is present.
[1-2. actions ]
The operation and action of the scroll compressor 100 configured as described above will be described below.
In the scroll compressor 100 having the above-described configuration, the upper annular portion communication passage 17d is provided on the upper surface of the annular portion 17a of the oldham ring 17. Further, a lower annular portion communication passage 17e is provided on the lower surface of the annular portion 17a of the oldham ring 17. This can reduce the contact surface (contact surface) between the upper annular portion communication passage 17d and the orbiting scroll back surface 12d and the contact surface (contact surface) between the lower annular portion communication passage 17e and the bearing 31, thereby reducing the sliding loss. Further, by providing the upper annular portion communication passage 17d and the lower annular portion communication passage 17e, the flow of the refrigerating machine oil present on the contact surface between the upper annular portion communication passage 17d and the orbiting scroll back surface 12d and the contact surface between the lower annular portion communication passage 17e and the bearing 31 is smoothed, and the viscous resistance of the refrigerating machine oil can be reduced. Since the key portion communication passage 17f, which is substantially parallel to the traveling direction of the oldham ring 17 and communicates the inner periphery and the outer periphery of the oldham ring 17, is formed in the key portion side surface of the oldham ring 17, the flow of the refrigerating machine oil is made smoother, and the viscosity resistance of the refrigerating machine oil can be reduced.
In the present embodiment, the upper annular portion communication passage 17d and the lower annular portion communication passage 17e are formed in substantially the same direction as the rotating motion of the oldham ring 17. Therefore, the flow of the refrigerating machine oil can be smoothed, and the effect of reducing the viscosity resistance of the refrigerating machine oil can be improved. For example, the refrigerating machine oil flowing through the upper annular portion communication passage 17d flows in the same direction as the orbiting motion of the orbiting scroll 12 when viewed from the orbiting scroll 12. The refrigerating machine oil flowing through the lower annular portion communication passage 17e flows in the same direction as the orbiting motion of the orbiting scroll 12 when viewed from the bearing portion 31. As described above, since the refrigerating machine oil flows in the same direction as the swirling motion, the flow of the refrigerating machine oil becomes smooth, and an effect of reducing the viscosity resistance of the refrigerating machine oil can be expected.
The annular portion communication passage provided in the annular portion 17a may be only one of the upper annular portion communication passage 17d and the lower annular portion communication passage 17 e. In this case, although the effect is halved, the effect of reducing the sliding resistance and the effect of reducing the viscous resistance of the refrigerating machine oil can be obtained, and the scroll compressor can be made more efficient.
In the present embodiment in which both the upper annular portion communication passage 17d and the lower annular portion communication passage 17e are provided, the upper annular portion communication passage 17d and the lower annular portion communication passage 17e are configured such that the depth Du of the deepest portion of the upper annular portion communication passage 17d and the depth Dd of the deepest portion of the lower annular portion communication passage 17e provided in the annular portion 17a of the oldham ring 17 are Du < Dd. Therefore, the fluidity of the refrigerating machine oil can be further improved. That is, during the operation of the compressor, the refrigerating machine oil flows vertically downward due to its own weight, and therefore the refrigerating machine oil is highly likely to be present below the oldham ring 17. Therefore, Du < Dd, that is, the lower annular portion communication passage 17e is formed deep, so that the fluidity of the refrigerating machine oil at the lower portion of the oldham ring 17 is improved, and the viscosity resistance of the refrigerating machine oil can be reduced. This can efficiently improve the effect of reducing the viscosity loss.
In particular, when the depth Dd of the deepest portion of the lower annular portion communication passage 17e of the oldham ring 17 is set to be 2 times or more the depth Du of the deepest portion of the upper annular portion communication passage 17d, the influence of the weight of the refrigerating machine oil can be absorbed to sufficiently improve the fluidity of the refrigerating machine oil, and a higher effect of reducing the viscosity loss can be obtained.
In the scroll compressor 100 of the present embodiment, the closed casing of the compressor is filled with a high-pressure working fluid. In the case of an internal high-pressure compressor, the oldham ring 17 is disposed in a space between the bearing portion 31 and the fixed scroll 11. In the high-pressure scroll compressor, since the oldham ring 17 is present in the space sandwiched between the bearing portion 31 and the fixed scroll 11, the refrigerating machine oil is more likely to accumulate in the vicinity of the oldham ring 17 than in the low-pressure scroll compressor. Therefore, in the high-pressure scroll compressor, the effect of reducing the viscous loss becomes higher as compared with the case of the low-pressure scroll compressor.
In the scroll compressor 100 of the present embodiment, the orbiting scroll back surface 12d is formed in a pressure (intermediate pressure) region between the discharge pressure and the suction pressure, and the orbiting scroll 12 is configured to be pressed against the fixed scroll 11 by the intermediate pressure. By providing the intermediate pressure region, the area around the oldham ring 17 also becomes the intermediate pressure region, and the amount of refrigerating machine oil around the oldham ring 17 increases compared to the case where the area around the oldham ring 17 is a low-pressure space. Therefore, the effect of reducing the viscosity loss becomes higher than that in the case of the low pressure type. In the scroll compressor 100, at least one of the intermediate pressure, the low pressure lower than the intermediate pressure, and the high pressure higher than the intermediate pressure may be applied to the orbiting scroll back surface 12 d. That is, the scroll compressor 100 may be configured such that at least an intermediate pressure acts on the orbiting scroll back surface 12 d.
[1-3. Effect, etc. ]
As described above, in the scroll compressor of the present embodiment, the annular portion communication passage that communicates the inner periphery and the outer periphery of the annular portion is formed in at least one of the axially upper surface and the axially lower surface of the annular portion of the oldham ring. Therefore, the bearing member that is grounded (in contact) with the oldham ring and/or the ground contact surface (contact surface) between the orbiting scroll and the oldham ring becomes small, and the sliding loss can be reduced. Further, the flow property of the refrigerating machine oil existing around the oldham ring via the communication path can be improved, and the viscous resistance can be reduced, so that the scroll compressor with high efficiency can be realized.
In the scroll compressor, the annular portion communication passage may be provided on both upper and lower surfaces of the oldham ring, and the relationship between the depth Du of the deepest portion of the upper annular portion communication passage and the depth Dd of the deepest portion of the lower annular portion communication passage may be set to Du < Dd. This improves the fluidity of the refrigerating machine oil at the lower portion of the oldham ring, and improves the effect of reducing the viscosity loss of the refrigerating machine oil.
In the scroll compressor, a key communication passage may be formed in the key side surface of the oldham ring so as to be substantially parallel to the traveling direction of the oldham ring and communicate the inner periphery and the outer periphery of the oldham ring. This smoothes the flow of the refrigerating machine oil through the key communication passage, thereby reducing the viscosity resistance of the refrigerating machine oil.
In the scroll compressor, both the upper annular portion communication passage and the lower annular portion communication passage may be formed substantially parallel to the traveling direction of the oldham ring. As a result, the refrigerating machine oil flows in the same direction as the swirling motion, and the flow of the refrigerating machine oil becomes smooth, thereby improving the effect of reducing the viscosity resistance of the refrigerating machine oil.
In the scroll compressor, the depth Dd of the deepest portion of the lower annular portion communication passage may be set to Dt/10 ≦ Dd ≦ Dt/2 relative to the thickness Dt of the thinnest portion of the annular portion of the oldham ring excluding the portion where the communication passage exists. This improves the fluidity of the refrigerating machine oil, and a higher viscosity loss reduction effect can be expected.
In the scroll compressor, the depth Dd of the deepest portion of the lower annular portion communication passage may be 2 times or more the depth Du of the deepest portion of the upper annular portion communication passage. This can sufficiently improve the fluidity of the refrigerating machine oil, and can achieve a higher effect of reducing the viscosity loss.
The present invention has been described above using the above embodiments, which are examples illustrating the technique of the present invention, and various changes, substitutions, additions, omissions, and the like can be made within the scope of the claims and the equivalent scope thereof.
As the refrigerant of the scroll compressor of the present invention, R32, carbon dioxide, or a refrigerant having a double bond between carbons can be used.
Industrial applicability of the invention
The scroll compressor of the present invention can achieve high efficiency by reducing the sliding loss and the viscous resistance of the refrigerating machine oil, and is therefore useful in a refrigeration cycle apparatus such as a hydronic heater, an air conditioner, a water heater, or a refrigerator.
Description of the 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 for refrigerator
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 scroll Upper surface
11e fixed scroll keyway
12-orbiting scroll
12a orbiting scroll end plate
12b orbiting scroll wrap
12c boss part
12d back face of orbiting scroll
12e orbiting scroll key slot
13 rotating shaft
13a eccentric shaft
13b lower end portion
13c rotary shaft refrigerator oil supply hole
14 discharge port
15 compression chamber
15a suction inlet
17 cross slip ring
17a ring part
17d upper annular portion communication passage
17e lower annular portion communication passage
17f key portion communication path
18 pairs of bearings
20 electric mechanism part
21 stator
22 rotor
30 main bearing
31 bearing part
32 boss receiving part
100 scroll compressor.
Claims (8)
1. A scroll compressor, comprising:
a closed container;
a compression mechanism portion disposed in the closed casing and capable of compressing a refrigerant, the compression mechanism portion having a fixed scroll, an orbiting scroll, and a rotation shaft for orbiting the orbiting scroll; and
an electric mechanism part disposed in the closed container for driving the compression mechanism part, wherein
The fixed scroll has a disc-shaped fixed scroll end plate and a fixed wrap disposed on the front surface of the fixed scroll end plate,
the orbiting scroll includes a disc-shaped orbiting scroll end plate and an orbiting wrap disposed on a front surface of the orbiting scroll end plate,
the scroll compressor has an oldham ring disposed on the back surface of the orbiting scroll end plate for preventing the orbiting scroll from rotating,
the oldham ring has: an annular portion; and a pair of 1 st key portions and a pair of 2 nd key portions arranged on one of an axial upper surface and an axial lower surface of the annular portion and protruding in an axial direction of the annular portion,
an annular portion communication passage that communicates an inner periphery and an outer periphery of the annular portion is disposed in at least one of the axially upper surface and the axially lower surface of the annular portion of the oldham ring.
2. The scroll compressor as set forth in claim 1, wherein:
a key communication passage that is substantially parallel to the traveling direction of the oldham ring and communicates the inner periphery and the outer periphery of the oldham ring is disposed on a side surface of the 1 st key portion or the 2 nd key portion of the oldham ring.
3. The scroll compressor according to claim 1 or 2, wherein:
an upper annular portion communication passage for communicating an inner periphery and an outer periphery of the annular portion is arranged on an upper surface of the annular portion of the oldham ring in an axial direction,
a lower annular portion communication passage that communicates an inner periphery and an outer periphery of the annular portion is disposed on an axially lower surface of the annular portion of the oldham ring,
the upper annular portion communication passage and the lower annular portion communication passage are configured such that a depth Du of a deepest portion of the upper annular portion communication passage and a depth Dd of a deepest portion of the lower annular portion communication passage are Du < Dd.
4. The scroll compressor of claim 3, wherein:
the 1 st key part is embedded with the fixed scroll, the 2 nd key part is embedded with the orbiting scroll,
the upper annular portion communication passage is formed substantially parallel to a direction in which the 2 nd key portion is connected by a straight line,
the lower annular portion communication passage is formed substantially parallel to a direction in which the 1 st key portion is connected by a straight line.
5. The scroll compressor according to claim 3 or 4, wherein:
the depth Dd of the deepest part of the communication path of the lower annular part and the thickness Dt of the thinnest part of the annular part of the cruciform slip ring except for the part where the communication path exists are set to Dt/10-Dd-2.
6. The scroll compressor according to claim 3 or 4, wherein:
the depth Dd of the deepest portion of the lower annular portion communication passage is 2 times or more the depth Du of the deepest portion of the upper annular portion communication passage.
7. The scroll compressor according to any one of claims 1 to 6, wherein:
the closed vessel is filled with a high-pressure working fluid.
8. The scroll compressor according to any one of claims 1 to 7, wherein:
the scroll compressor has an intermediate pressure region on a back surface of the orbiting scroll, and the orbiting scroll is configured to be pressed against the fixed scroll by a pressure of the intermediate pressure region.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019229887 | 2019-12-20 | ||
| JP2019-229887 | 2019-12-20 | ||
| PCT/JP2020/045587 WO2021124973A1 (en) | 2019-12-20 | 2020-12-08 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114829776A true CN114829776A (en) | 2022-07-29 |
Family
ID=76478688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080086898.2A Pending CN114829776A (en) | 2019-12-20 | 2020-12-08 | Scroll compressor having a discharge port |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2021124973A1 (en) |
| CN (1) | CN114829776A (en) |
| WO (1) | WO2021124973A1 (en) |
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| CN110234881A (en) * | 2017-01-27 | 2019-09-13 | 松下知识产权经营株式会社 | Scroll compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0819911B2 (en) * | 1989-01-06 | 1996-03-04 | 松下電器産業株式会社 | Rotation prevention device for scroll compressor |
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2020
- 2020-12-08 CN CN202080086898.2A patent/CN114829776A/en active Pending
- 2020-12-08 JP JP2021565492A patent/JPWO2021124973A1/ja active Pending
- 2020-12-08 WO PCT/JP2020/045587 patent/WO2021124973A1/en active Application Filing
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|---|---|---|---|---|
| JPS6075791A (en) * | 1983-09-30 | 1985-04-30 | Toshiba Corp | Compressing device of scroll type |
| JPH07259851A (en) * | 1994-03-18 | 1995-10-09 | Nissan Motor Co Ltd | Vibration damping supporter for high speed rotary unit and manufacture thereof |
| JPH08284853A (en) * | 1995-04-12 | 1996-10-29 | Hitachi Ltd | Scroll compressor |
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| CN206000866U (en) * | 2016-08-25 | 2017-03-08 | 苏州拓普发动机零部件有限公司 | Bearing shell |
| CN110234881A (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 |
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| Publication number | Publication date |
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| WO2021124973A1 (en) | 2021-06-24 |
| JPWO2021124973A1 (en) | 2021-06-24 |
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