CN201747614U - Air discharge structure of rotary compressor - Google Patents
Air discharge structure of rotary compressor Download PDFInfo
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- CN201747614U CN201747614U CN 201020269084 CN201020269084U CN201747614U CN 201747614 U CN201747614 U CN 201747614U CN 201020269084 CN201020269084 CN 201020269084 CN 201020269084 U CN201020269084 U CN 201020269084U CN 201747614 U CN201747614 U CN 201747614U
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- rotary compressor
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Abstract
The utility model relates to an air discharge structure of a rotary compressor, which comprises a main bearing, an auxiliary bearing, an exhaust hole, an exhaust valve piece, a limitator, a piston and a slip sheet, wherein the main bearing and the auxiliary bearing are arranged on the side surface of a cylinder; the exhaust hole is formed on the main bearing and/or the auxiliary bearing; the exhaust valve piece is used for blocking the exhaust hole; the limitator is used for controlling the opening degree of the exhaust valve piece; the piston rotates in the cylinder in an eccentric way; the slip sheet is arranged in a slip sheet groove of the cylinder and reciprocate in a linear way; one end of the slip sheet is propped against the periphery of the piston; and the cross section of the exhaust hole is in the shape of a non-circular structure that is distributed in the circumferential direction of the cylinder in an elongated way. The air discharge structure of the rotary compressor can reduce the air discharge area in a delayed way in the later period of the exhaust process, can avoid the overcompression loss caused by the premature reduction of the air discharge area, and improves the work efficiency of the compressor. The air discharge structure can be suitable for a single-cylinder rotary compressor, also can be suitable for a double-cylinder rotary compressor, and is characterized by simple and reasonable structure, operating flexibility and low manufacturing cost.
Description
Technical field
The utility model relates to the exhaust structure of a kind of rotary compressor, particularly a kind of rotary compressor.
Background technique
Common rotary compressor, see accompanying drawing 1-accompanying drawing 4, comprise the bent axle 4 that rotates and have eccentric part by motor driving, the cylinder 2 that has cylinder notch 10, be positioned at the vane slot and the reciprocating slide plate 1 of cylinder, be installed on the eccentric part of bent axle 4 and make the piston 3 of eccentric rotary, be installed in the upper end of cylinder 2, cooperate and have the main bearing 5 of circular exhaust port 8 with bent axle, be installed in the lower end surface of cylinder 2, the supplementary bearing 9 that cooperates with bent axle, be installed in the deformable exhaust valve plate 7 that is used for blocking exhaust port 8 on the main bearing 5.
When piston 3 turns to several angle A along with bent axle 4, see accompanying drawing 5, when the gas in the high cylinder pressure chamber reached certain pressure, exhaust valve plate 7 was opened, and exhaust process begins.
When bent axle 4 turns to several angle B, see accompanying drawing 6, piston begins to shelter from exhaust port, and leaving area begins to reduce.
When bent axle 4 turns to several angle C, see accompanying drawing 7,3 at the center of the center of piston 3, cylinder 2 and the center of exhaust port 8 are point-blank.At this moment, exhaust port 8 is all blocked by piston 3; The inwall of while piston 3 and the distance L minimum of exhaust port inboard, therefore the easiest exhaust port 8 that passes through of the high pressure oil in the piston 3 must guarantee between exhaust port 8 and the piston 3 enough sealed widths are arranged to the cylinder internal leakage.
When bent axle 4 turns to several angle D, see accompanying drawing 8-accompanying drawing 9, exhaust valve plate 7 is closed, and exhaust process finishes, and still has the part pressurized gas to fail to discharge at this moment in exhaust port 8, cylinder notch 10 and the cylinder, and this part has just formed clearance volume.
When bent axle 4 rotates the arrival angle B, because reducing of leaving area is easy to cause the instantaneous rising of compression chamber internal pressure, trembling of consequent overcompression loss and exhaust valve plate will make the working efficiency of compressor descend.
When bent axle 4 rotates arrival angle C, in order to increase the L value to obtain enough sealed widths, the aperture of the exhaust port 8 of circle must be reduced or the center with exhaust port 8 outside move, will bring exhaust resistance increase or clearance volume to increase thus, this all will make the compressor operating decrease in efficiency.
When bent axle 4 rotated arrival angle D, the pressurized gas in the clearance volume failed to discharge, and have just lost follow-up refrigerating function, make compressor do idle work.In addition, these part pressurized gas will expand into the cylinder suction side, and the portion gas that enters in the cylinder is extruded, and have reduced the gettering quantity of compressor.Therefore, the more little performance that can promote compressor more of clearance volume.
The model utility content
The purpose of this utility model aim to provide a kind of simple and reasonable, flexible operation, fabricating cost low, applied widely, guaranteeing under the identical situation of leaving area, overcompression in the time of can reducing exhaust is lost, is reduced clearance volume or increases seal length, with the exhaust structure of the rotary compressor that improves compressor operating efficient, to overcome deficiency of the prior art.
Press the exhaust structure of a kind of rotary compressor of this purpose design, comprise the main bearing and the supplementary bearing that are arranged on the cylinder side, be arranged on the exhaust port on main bearing and/or the supplementary bearing and the exhaust valve plate of block exhaust port, the snubber of control exhaust valve plate aperture, in cylinder, make the piston of eccentric rotary, be arranged on the slide plate of doing straight reciprocating motion in the cylinder vane slot, one end of this slide plate is resisted against the periphery of piston, cylinder is provided with cylinder notch, and its structure characteristic is being shaped as along the non-circular structure of the circumferencial direction elongate distribution of cylinder of cross section of exhaust port.
The part that described exhaust port is positioned at the cylinder notch position moves on to a side or the left and right sides of exhaust port remainder.
The part that described exhaust port relies on cylinder inner wall moves on to a side or the left and right sides of exhaust port remainder outward.
Described exhaust valve plate has the head that matches with the shape of cross section of exhaust port.
A kind of exhaust structure of rotary compressor, comprise the central diaphragm that is used to separate first cylinder and second cylinder, be separately positioned on the main bearing and the supplementary bearing of first cylinder and the second cylinder side, in first cylinder and second cylinder, make the piston of eccentric rotary respectively, in the first cylinder vane slot and the second cylinder vane slot, make the slide plate of straight reciprocating motion respectively, one end of this slide plate is resisted against the periphery of corresponding piston, its structure characteristic is the exhaust valve plate that central diaphragm is provided with exhaust port and block exhaust port, the snubber of control exhaust valve plate aperture, being shaped as of the cross section of exhaust port along the non-circular structure of the circumferencial direction elongate distribution of first cylinder or second cylinder.
The part that described exhaust port is positioned at the cylinder notch position of first cylinder or second cylinder moves on to a side or the left and right sides of exhaust port remainder.
The part that described exhaust port relies on the inwall of first cylinder or second cylinder moves on to a side or the left and right sides of exhaust port remainder outward.
Described exhaust valve plate has the head that matches with the shape of cross section of exhaust port.
The utility model can realize that leaving area postpones to reduce in the later stage of exhaust process, has avoided owing to the overcompression that leaving area reduces to cause is too early lost, thereby has improved compressor operating efficient; Can either improve the performance of compressor guaranteeing to reduce the clearance volume of compressor under the constant prerequisite of exhaust circulation area; Can also reduce the leakage of the oil or the gas of high and low pressure side guaranteeing to increase the minimum sealed width of piston under the constant prerequisite of exhaust circulation area, improve the Performance And Reliability of compressor.
The utility model not only goes for the single cylinder rotary compressor, but also goes for twin-tub rotation-type compressor, and it has simple and reasonable, flexible operation, characteristics that fabricating cost is low.
Description of drawings
Fig. 1 is vertical broken section structural representation of existing rotary compressor.
Fig. 2 is the plan structure schematic representation of the exhaust structure of existing rotary compressor.
Fig. 3 is that A-A among Fig. 2 is to the sectional structure schematic representation.
Fig. 4 is the working state schematic representation of existing rotary compressor.
Working state schematic representation when Fig. 5～Fig. 8 is positioned at four diverse locations for the piston that has rotary compressor now.
Fig. 9 for the B-B among Fig. 8 to analysing and observe the structure for amplifying schematic representation.
Figure 10 is the utility model first embodiment's a broken section structural representation.
Figure 11 for the C-C among Figure 10 to analysing and observe the structure for amplifying schematic representation.
Figure 12 is the utility model second embodiment's a broken section
Figure 13 for the D-D among Figure 12 to analysing and observe the structure for amplifying schematic representation.
Figure 14 is the curve relation figure of exhaust port circulation area of the present utility model and crank angle.
Among the figure: 1 is slide plate, and 2 is cylinder, and 3 is piston, and 4 is bent axle, and 5 is main bearing, and 6 is snubber, and 7 is exhaust valve plate, and 8 is exhaust port, and 9 is supplementary bearing, and 10 is cylinder notch.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
First embodiment
Referring to Figure 10-Figure 11 and Figure 14, the exhaust structure of this rotary compressor, comprise the main bearing 5 and the supplementary bearing 9 that are arranged on cylinder 2 sides, be arranged on the exhaust valve plate 7 of exhaust port 8 on main bearing 5 and/or the supplementary bearing 9 and block exhaust port 8, the snubber 6 of control exhaust valve plate 7 apertures, in cylinder 2, make the piston 3 of eccentric rotary, be arranged on the slide plate of doing straight reciprocating motion in the cylinder vane slot, one end of this slide plate is resisted against the periphery of piston, it is characterized in that being shaped as along the non-circular structure of the circumferencial direction elongate distribution of cylinder 2 of cross section of exhaust port 8.Exhaust valve plate 7 has the head that matches with the shape of cross section of exhaust port 8.
Only provided the exhaust structure that is arranged on the main bearing 5 among the figure of present embodiment.
Can clearly find out from Figure 10: original exhaust port 8 is made up of two-part, comprises first portion 11 that is positioned at cylinder inside and the second portion 12 that is positioned at the cylinder position.First portion 11 is divided by cylinder notch 10 with second portion 12.
The exhaust port of present embodiment also is made up of two-part, comprise the first portion 11 that is positioned at cylinder inside and along the circumferencial direction elongate distribution of cylinder and and first portion 11 third part 13 of joining, this third part 13 also is positioned at the inboard of cylinder.Promptly reduce the second portion 12 that blocked by cylinder in the exhaust port of original circle, increase third part 13 at the basic upper edge of remaining first portion 11 cylinder circumferencial direction; The third part of this increase can be positioned at a side of first portion 11, also can be positioned at the left and right sides of first portion 11, and makes the area of exhaust port of new formation identical with the area size of the exhaust port of original circle.Simply saying, promptly is a side or the left and right sides that the second portion that exhaust port 8 is positioned at cylinder notch 10 positions is moved on to exhaust port 8 remaining first portions, forms third part 13.
Compare with original exhaust port, present embodiment moves in the outer with exhaust port, so that the volume of cylinder notch just can design is littler, and the clearance with in the cylinder of new exhaust port does not all change, therefore, the clearance volume that present embodiment has reduced has improved the working efficiency of compressor.
Referring to Figure 14, in the curve relation figure of exhaust port circulation area and crank angle, through the curve after improving is I, original curve is II, from figure, can draw, exhaust port after the improvement has increased effective leaving area, has reduced the overcompression loss in the exhaust process, has improved compressor operating efficient.
Below only be that exhaust port is set, above-mentioned technological scheme is used on supplementary bearing or the central diaphragm also is fine that it can both obtain with the identical technique effect of above-mentioned technological scheme on main bearing, just no longer repeated here.
Second embodiment
Referring to Figure 12-Figure 14, original exhaust port 8 is made up of first portion 21 and second portion 22 on the main bearing 5, and second portion 22 is positioned at the inboard of first portion 21, and the distance of the inwall of piston 3 and sealing between the second portion 22 of inboard is L.
Exhaust port on the main bearing in the present embodiment is made of jointly first portion 21 and third part 23 two-part, be about to be positioned at second portion 22 outer the moving of the inboard of former exhaust port to constitute new third part 23, this third part 23 increases at the circumferencial direction of the basic upper edge of first portion 21 cylinder, the third part 23 of this increase both can be positioned at a side of first portion 21, also can be positioned at the left and right sides of first portion 21, and guarantee that the area of the new exhaust port that forms is identical with the area size of the exhaust port of original circle.Simply saying, promptly is second portion 22 an outer side or the left and right sides that move on to exhaust port 8 remaining first portions 21 that exhaust port 8 relied on cylinder 2 inwalls, forms third part 23.
Compare with original exhaust port, the clearance volume of the exhaust port in the present embodiment does not change, but formed third part 23 owing to moving in the second portion 22, therefore, the inwall of piston 3 and the distance L between the second portion 22 of inboard become the inwall of piston 3 and the distance L between the first portion 21 ', because the width L ' of sealing is greater than the width L of original sealing, thereby avoided increasing the clearance volume increase that sealed width causes, therefore, compressor operating efficient and reliability have been improved in a disguised form.All the other are not stated part and see first embodiment, no longer repeat.
Claims (8)
1. the exhaust structure of a rotary compressor, comprise the main bearing (5) and the supplementary bearing (9) that are arranged on cylinder (2) side, be arranged on the exhaust port (8) on main bearing (5) and/or the supplementary bearing (9) and the exhaust valve plate (7) of block exhaust port (8), the snubber (6) of control exhaust valve plate (7) aperture, in cylinder (2), make the piston (3) of eccentric rotary, be arranged on the slide plate (1) of doing straight reciprocating motion in the cylinder vane slot, one end of this slide plate (1) is resisted against the periphery of piston (3), cylinder (2) is provided with cylinder notch (10), it is characterized in that being shaped as along the non-circular structure of the circumferencial direction elongate distribution of cylinder (2) of cross section of exhaust port (8).
2. the exhaust structure of rotary compressor according to claim 1 is characterized in that part that described exhaust port (8) is positioned at cylinder notch (10) position moves on to a side or the left and right sides of exhaust port (8) remainder.
3. the exhaust structure of rotary compressor according to claim 1 is characterized in that part that described exhaust port (8) relies on cylinder (2) inwall moves on to a side or the left and right sides of exhaust port (8) remainder outward.
4. according to the exhaust structure of the arbitrary described rotary compressor of claim 1 to 3, it is characterized in that described exhaust valve plate (7) has the head that matches with the shape of cross section of exhaust port (8).
5. the exhaust structure of a rotary compressor, comprise the central diaphragm that is used to separate first cylinder and second cylinder, be separately positioned on the main bearing (5) and the supplementary bearing (9) of first cylinder and the second cylinder side, in first cylinder and second cylinder, make the piston of eccentric rotary respectively, in the first cylinder vane slot and the second cylinder vane slot, make the slide plate of straight reciprocating motion respectively, one end of this slide plate is resisted against the periphery of corresponding piston, it is characterized in that central diaphragm is provided with the exhaust valve plate of exhaust port and block exhaust port, the snubber of control exhaust valve plate aperture, being shaped as of the cross section of exhaust port along the non-circular structure of the circumferencial direction elongate distribution of first cylinder or second cylinder.
6. the exhaust structure of rotary compressor according to claim 5 is characterized in that part that described exhaust port is positioned at the cylinder notch position of first cylinder or second cylinder moves on to a side or the left and right sides of exhaust port remainder.
7. the exhaust structure of rotary compressor according to claim 5 is characterized in that part that described exhaust port relies on the inwall of first cylinder or second cylinder moves on to a side or the left and right sides of exhaust port remainder outward.
8. according to the exhaust structure of the arbitrary described rotary compressor of claim 5 to 7, it is characterized in that described exhaust valve plate has the head that matches with the shape of cross section of exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020269084 CN201747614U (en) | 2010-06-19 | 2010-07-07 | Air discharge structure of rotary compressor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010210496.7 | 2010-06-19 | ||
| CN201010210496 | 2010-06-19 | ||
| CN 201020269084 CN201747614U (en) | 2010-06-19 | 2010-07-07 | Air discharge structure of rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747614U true CN201747614U (en) | 2011-02-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020269084 Expired - Lifetime CN201747614U (en) | 2010-06-19 | 2010-07-07 | Air discharge structure of rotary compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201747614U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963861A (en) * | 2015-07-02 | 2015-10-07 | 广东美芝制冷设备有限公司 | Compressing mechanism for rotary compressor and rotary compressor with compressing mechanism |
| CN105275821A (en) * | 2014-06-27 | 2016-01-27 | Lg电子株式会社 | Compressor |
| CN114251268A (en) * | 2021-12-08 | 2022-03-29 | 珠海凌达压缩机有限公司 | Exhaust structure and compressor of compressor |
| CN116104761A (en) * | 2021-11-09 | 2023-05-12 | 上海海立电器有限公司 | Combined crankshaft and rotor type compressor |
-
2010
- 2010-07-07 CN CN 201020269084 patent/CN201747614U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275821A (en) * | 2014-06-27 | 2016-01-27 | Lg电子株式会社 | Compressor |
| US10012232B2 (en) | 2014-06-27 | 2018-07-03 | Lg Electronics Inc. | Compressor |
| CN104963861A (en) * | 2015-07-02 | 2015-10-07 | 广东美芝制冷设备有限公司 | Compressing mechanism for rotary compressor and rotary compressor with compressing mechanism |
| CN116104761A (en) * | 2021-11-09 | 2023-05-12 | 上海海立电器有限公司 | Combined crankshaft and rotor type compressor |
| CN114251268A (en) * | 2021-12-08 | 2022-03-29 | 珠海凌达压缩机有限公司 | Exhaust structure and compressor of compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |