CN1080029A - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
- Publication number
- CN1080029A CN1080029A CN 93103182 CN93103182A CN1080029A CN 1080029 A CN1080029 A CN 1080029A CN 93103182 CN93103182 CN 93103182 CN 93103182 A CN93103182 A CN 93103182A CN 1080029 A CN1080029 A CN 1080029A
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- CN
- China
- Prior art keywords
- compression cylinder
- height
- rotary compressor
- vane slot
- slide plate
- Prior art date
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- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a kind of rotary compressor, the air displacement scope of this compressor is 17-36ml/rev, the compression cylinder internal diameter of compressing mechanism is 1.6-1.7 with the scope of the ratio of its height, at the gap length between formed compression cylinder internal surface and the rotor outer surface on the position toward 90 ° ± 5 ° of angles of revolution from the vane slot of compression cylinder is 0.022%-0.066% of compression cylinder height, and it is 0.037%-0.077% of compression cylinder height that the scope of the wide resulting value of slide plate degree is gone in the vane slot degree reductions of compression cylinder.
Description
The present invention relates to a kind of rotary compressor, relate in particular to a kind of rotary compressor that for example is used for the refrigerator on room air conditioner and the similar device.
The structure of conventional rotary compressor at first, is described in conjunction with Fig. 1-3.
In this rotary compressor, the motor of being made up of rotor 1 and stator 23 is installed in the top in the closed shell 11, and is loaded on bottom in the housing by the compressing mechanism 9 that compression cylinder 4, rotor 5, upper bearing (metal) 6, lower bearing 7 and a slice slide plate 8 are formed.By crank mechanism 10 motor 3 and compressing mechanism 9 are interconnected, rotor 5 rotatably is assemblied on the eccentric part 10a of bent axle 10.Lubricant oil 12 amasss the bottom at enclosing housing 11.
Roughly owing to following three reasons make this class rotary compressor degradation when working.
First reason is because the loss that the friction of the slide member of compressing mechanism 9 causes.Second reason is because the caused loss of flow resistance of refrigeration agent.The 3rd reason is because the loss that the leakage of compressing mechanism 9 inner refrigerant gases causes.
Because the loss that the friction of the slide member of compressing mechanism 9 causes is present between the outer surface of eccentric part 10a of the internal surface of rotor 5 and bent axle 10, between the internal surface of the outer surface of bent axle 10 and upper bearing (metal) 6, between the internal surface of the outer surface of bent axle 10 and lower bearing 7, between the side surface 8a of the vane slot 4a of compression cylinder 4 and slide plate 8 and between the bit point 8b of the outer surface of rotor 5 and slide plate 8.
Because the caused second kind of loss of flow resistance of refrigeration agent mainly occurs in the refrigerant suction port 4b of compression cylinder 4, be located on the lower bearing 7 refrigeration agent tap hole 7a and by lower bearing 7 with eliminate the noise and cover in 13 spaces that constitute 14.
Because caused the third loss occurrences of leakage of compressing mechanism 9 inner refrigerant gases is (rotor 5 and upper bearing (metal) 6 in the formed gap 15, above and below of as shown in Figure 3 rotor 5, formed gap between the lower bearing 7, promptly because the formed gap of height difference between compression cylinder and the rotor), formed gap 16 between the internal surface of compression cylinder 4 as shown in Figure 2 and the outer surface of rotor 5, this gap of gap 18(that forms between the above and below of formed gap 17 and slide plate as shown in Figure 38 between the vane slot 4a of compression cylinder 4 as shown in Figure 2 and the slide plate 8 since the height difference institute between compression cylinder and slide plate to).
In order to reduce by above-mentioned three losses that main cause causes, the first kind of loss that causes for the friction because of the slide member of compressing mechanism 9 is as long as select the material of above-mentioned slide member to make it can improve the degree of roughness on surface or reduce surface friction drag and just be enough to reduce this loss.For second kind of loss that the flow resistance by refrigeration agent causes, as long as it is just enough to strengthen circulation area.But, relate to the leakage of refrigerant gas in the existing compressing mechanism 9, there is gas leakage theoretically hardly, therefore, the leakage that can only come analytical gas according to disclosed various tests in the 5.3.2 bar of " hermetically encapsulated coolant " (publication on July 30th, 1981).
In a kind of rotary compressor, its air displacement is in the scope of 17-36ml/rev, and the internal diameter of compression cylinder 4 is set in the scope of 1.6-1.7 with the value of the ratio gained of its height.For example, be 32.1ml/rev in a kind of air displacement.The height of compression cylinder 4 and internal diameter thereof are respectively in the rotary compressor of 35mm and 58mm, can obtain ratio and EER(refrigerating capacity/compressor output of the height of the size of gap 15,16,17 and 18 and compression cylinder 4 by test) between relation, EER represents the ride quality of this compressor.Fig. 4,5,6 and 7 shows resulting result.
Among Fig. 4, abscissa is represented the size in gap 15 and the ratio of the height of compression cylinder 4.Can find out significantly that from Fig. 4 the scope that traditional rotary compressor ratio is got is between the 0.054%-0.086%.
Among Fig. 5, abscissa is represented the size in gap 16 and the ratio of the height of compression cylinder 4.Can find out significantly that from Fig. 5 the scope that traditional this value of rotary compressor is got is between the 0.054%-0.097%.
Among Fig. 6, abscissa is represented the size in gap 17 and the ratio of the height of compression cylinder 4.As can being clear that in Fig. 6, the scope that traditional this value of rotary compressor is got is between the 0.071%-0.100%.
Among Fig. 7, abscissa is represented the size in gap 18 and the ratio of the height of compression cylinder 4.As can being clear that in Fig. 7, the scope that traditional this value of rotary compressor is got is between the 0.057%-0.094%.
In the situation of Fig. 5 and Fig. 6, its EER sharply descends within the specific limits, and Here it is makes the main cause of decreased performance.
Task of the present invention provides a kind of rotary compressor, the air displacement of this press is in the scope of 17-36ml/rev, the ratio of internal diameter and its height of compression cylinder that is used to constitute compressing mechanism is in the 1.6-1.7 scope, and the internal surface of compression cylinder and the vane slot and the gap length between the slide plate of gap length between the rotor outer surface and compression cylinder be adjusted in the optimum range, in this scope, the life-span of press can not be affected and performance can sharply not reduce yet because of Metal Contact, has therefore improved the performance of compressor.
First embodiment according to the invention, the rotary compressor that is provided comprises motor part that is installed in the top in the enclosing housing and the compressing mechanism that is installed in bottom in the housing, the air displacement of this press is in the 17-36ml/rev scope, the compression cylinder internal diameter of compressing mechanism is 1.6-1.7 with the scope of the ratio of its height, and compression cylinder internal surface and rotor are the 0.022%-0.066% of compression cylinder height at the vane slot from compression cylinder toward the interstice coverage between the rotor outer surface of 90 ° ± 5 ° of angle parts of revolution.Be fixed with upper bearing (metal) surface and lower bearing surface and be not more than 0.015% of compression cylinder height with two surfaces of the compression cylinder that forms compression chamber and the non-perpendicularity between the compression cylinder internal surface, the unflatness of rotor outer surface and cylindroid degree all are not more than 0.009% of compression cylinder height, and the surface roughness of rotor outer surface is not more than the 0.0034%(R of compression cylinder height
2), the surface roughness of compression cylinder internal surface is not more than the 0.0057%(R of compression cylinder height
2).
According to second embodiment of the present invention, the rotary compressor that is provided comprises motor that is installed in the top in the enclosing housing and the compressing mechanism that is installed in the enclosure interior bottom, the air displacement of this press is in the 17-36ml/rev scope, and the internal diameter of the compression cylinder of compressing mechanism is 1.6-1.7 with the scope of the ratio of its height.The scope that compression cylinder vane slot width deducts the resulting value of width of slide plate is the 0.037%-0.077% of compression cylinder height, the unflatness on vane slot surface is no more than 0.017% of compression cylinder height, and the surface roughness on vane slot surface is no more than the 0.021%(R of compression cylinder height
2), when slide plate in vane slot during to-and-fro motion, the unflatness towards the slide plate surface on vane slot surface is no more than 0.017% of compression cylinder height, the surface roughness on slide plate surface is no more than the 0.0023%(R of compression cylinder height
2).
Fig. 1 is the top cross-sectional view of rotary compressor;
Fig. 2 is the amplification sectional view of the compressing mechanism of Fig. 1;
Fig. 3 is along the sectional view of III-III line among Fig. 2;
Fig. 4 shows the relation curve between the EER that the compression cylinder height deducts the ratio of resulting value of rotor height and compression cylinder height and rotary compressor;
Fig. 5 shows the relation curve between the EER of the ratio of gap between compression cylinder internal surface and the rotor outer surface and compression cylinder height and rotary compressor;
Fig. 6 shows the relation curve between the EER that compression cylinder vane slot width deducts the ratio of resulting gap length of slide plate width and compression cylinder height and rotary compressor;
Fig. 7 shows the relation curve between the EER that the compression cylinder height deducts the ratio of resulting gap length of slide plate height and compression cylinder height and rotary compressor.
1-7 is described in detail the preferred embodiment of the invention below with reference to accompanying drawing.
At first, the main structure in conjunction with front Fig. 1 used to description of the Prior Art-3 pairs of rotary compressors of the present invention is described.
In rotary compressor shown in Figure 1, in an enclosing housing 11, to comprise that the motor part 3 of rotor 1 and stator 2 is loaded on the top of housing, the compressing mechanism 9 that will comprise compression cylinder 4, rotor 5, upper bearing (metal) 6, lower bearing 7 and slide plate 8 is contained in its underpart, by crank mechanism 10 motor part 3 and compressing mechanism 9 are connected with each other, and rotor 5 rotatably are assemblied on the eccentric part 10a of bent axle 10.Lubricant oil 12 is collected in the bottom of closed casing 11.
When having the rotary compressor running of this structure, on rotor shown in Figure 35 and below between in the formed gap 15, between the outer surface of the internal surface of compression cylinder shown in Figure 24 and rotor 5 in the formed gap 16, between the vane slot 4a of compression cylinder shown in Figure 24 and slide plate 8, have the loss that causes because of compressing mechanism 9 inner refrigerant gas leakages in the formed gap 17 and in the formed gap 18, slide plate 8 above and below shown in Figure 3.
In conjunction with Fig. 2 freezing medium leakage is described.At first, by means of the rotor mechanism 5 of eccentric rotary and the refrigerant gas that slide plate 8 will suck from the suction port 4b of compression cylinder 4 are compressed to a certain specified pressure with bent axle 10 rotations, discharge then.During this period, since refrigerant gas with the direction of arrow 19 flow through gap 15, with the direction of arrow 20 flow through gap 16, existing pressure official post refrigerant gas leaks when flowing through gap 17 and flowing through gap 18 with the direction of arrow 22 with the direction of arrow 21.
Fig. 4-7 shows the test result curve.As can be seen, in the test relevant with gap 16 and 17, its EER sharply descends within the specific limits from these curves.According to the present invention, will be on the position toward 90 ° ± 5 ° of angles of revolution from the vane slot of compression cylinder the size in formed gap 16 be adjusted into the 0.022%-0.066% of compression cylinder height.On the other hand, the size in gap 17 is adjusted into the 0.037%-0.077% of compression cylinder height.
For the size that makes gap 16,17 ratio with the compression cylinder height drops in the above-mentioned scope, the surface of the surface of fixing upper bearing (metal) 6 and lower bearing 7 is chosen to be 0.016% of the height that is not more than compression cylinder 4 with the non-perpendicularity between the internal surface of two surfaces of the compression cylinder 4 that forms compression chamber and compression cylinder 4, the surface roughness of the internal surface of compression cylinder 4 is chosen to be the 0.0057%(R of the height that is not more than compression cylinder 4
2), unflatness, cylindroid degree and the surface roughness of rotor 5 outer surfaces is chosen to be 0.009%, 0.009% and 0.0034%(R of the height that is not more than compression cylinder 4 respectively
2), 0.017% and 0.021%(R that the unflatness and the surface roughness on vane slot 4a surface is chosen to be the height that is not more than compression cylinder 4 respectively
2), the air spots of slide plate side surface 8b directly spent and surface roughness is chosen to be 0.009% and 0.0023%(R of the height that is not more than compression cylinder 4 respectively
2).
Curve among Fig. 4,5,6 and 7 be according to select for use have the 32.1ml/rev air displacement, the compression cylinder internal diameter is 58mm, height is made for the resulting result of the rotary compressor of 35mm, but, if adopting air displacement is 17-36ml/rev, the compression cylinder internal diameter is that the 1.3-2.0 rotary compressor also has same effect with the scope of the ratio of its height.
As mentioned above, can provide a kind of rotary compressor that does not cause EER to descend according to the present invention, therefore can improve the performance of this class compressor because of Metal Contact and freezing medium leakage.
Claims (4)
1, a kind of rotary compressor comprises:
A motor part that is installed in closed casing internal upper part position, and one be installed in the compressing mechanism that the closed casing low inside is put, it is characterized in that its air displacement scope is 17-36ml/rev, the vane slot of the compression cylinder of described compressing mechanism gap length between formed compression cylinder internal surface and the rotor outer surface on the position at 90 ° ± 5 ° of angles of revolution is the 0.022%-0.066% of compression cylinder height.
2, rotary compressor as claimed in claim 1, it is characterized in that fixedly upper bearing (metal) and lower bearing surface are not more than 0.016% of compression cylinder height with the non-perpendicularity between the internal surface of two surfaces of the compression cylinder that forms compression chamber and compression cylinder, the unflatness of rotor outer surface and cylindroid degree all are not more than 0.009% of compression cylinder height, and the surface roughness of rotor outer surface is not more than the 0.0034%(R of compression cylinder height
2), the surface roughness of compression cylinder internal surface is not more than the 0.0057%(R of compression cylinder height
2).
3, a kind of rotary compressor comprises:
A motor part that is installed in closed casing internal upper part position, and compressing mechanism that is installed in the lower position of closed casing, it is characterized in that its air displacement scope is 17-36ml/rev, the compression cylinder internal diameter of described press mechanism and the ratio range of its height are 1.6-1.7, and the scope that the vane slot width of compression cylinder deducts the resulting value of slide plate width is the 0.037%-0.077% of compression cylinder height.
4, rotary compressor as claimed in claim 3 is characterized in that the unflatness on vane slot surface is not more than 0.017% of compression cylinder width, and the surface roughness on vane slot surface is not more than the 0.021%(R of compression cylinder height
3), when slide plate in vane slot during to-and-fro motion, the unflatness towards the slide plate surface on vane slot surface is not more than 0.017% of compression height, the surface roughness on slide plate surface is not more than the 0.0023%(R of compression cylinder height
2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10428392A JPH05302584A (en) | 1992-04-23 | 1992-04-23 | Rotary compressor |
| JP104283/92 | 1992-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080029A true CN1080029A (en) | 1993-12-29 |
| CN1031360C CN1031360C (en) | 1996-03-20 |
Family
ID=14376605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93103182 Expired - Lifetime CN1031360C (en) | 1992-04-23 | 1993-03-05 | Rotary compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH05302584A (en) |
| CN (1) | CN1031360C (en) |
| MY (1) | MY109769A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089411C (en) * | 1996-06-11 | 2002-08-21 | 三洋电机株式会社 | Closed compressor |
| CN103206377A (en) * | 2012-01-11 | 2013-07-17 | 广东美芝制冷设备有限公司 | Rotary compressor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001050184A (en) * | 1999-08-05 | 2001-02-23 | Sanyo Electric Co Ltd | Multiple cylinder rotary compressor |
| JP5132351B2 (en) | 2008-02-20 | 2013-01-30 | 三菱電機株式会社 | Hermetic compressor |
| JP5132352B2 (en) * | 2008-02-20 | 2013-01-30 | 三菱電機株式会社 | Hermetic compressor |
| CN102748288A (en) * | 2011-04-22 | 2012-10-24 | 广东美芝制冷设备有限公司 | Rotary compressor using R290 refrigerant |
-
1992
- 1992-04-23 JP JP10428392A patent/JPH05302584A/en active Pending
-
1993
- 1993-02-27 MY MYPI93000355A patent/MY109769A/en unknown
- 1993-03-05 CN CN 93103182 patent/CN1031360C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089411C (en) * | 1996-06-11 | 2002-08-21 | 三洋电机株式会社 | Closed compressor |
| CN103206377A (en) * | 2012-01-11 | 2013-07-17 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN103206377B (en) * | 2012-01-11 | 2015-11-18 | 广东美芝制冷设备有限公司 | Rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05302584A (en) | 1993-11-16 |
| MY109769A (en) | 1997-06-30 |
| CN1031360C (en) | 1996-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130305 Granted publication date: 19960320 |