CN100353072C - Rotary compressor of centralized air-breathing and exhaust - Google Patents
Rotary compressor of centralized air-breathing and exhaust Download PDFInfo
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- CN100353072C CN100353072C CNB2004100547768A CN200410054776A CN100353072C CN 100353072 C CN100353072 C CN 100353072C CN B2004100547768 A CNB2004100547768 A CN B2004100547768A CN 200410054776 A CN200410054776 A CN 200410054776A CN 100353072 C CN100353072 C CN 100353072C
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Abstract
The present invention discloses a rotary compressor of centralized air-breathing and exhaust which includes shell, machine core, air suction pipe, motor stator, rotor and reservoir. The cylinder inner the machine core is three or more and sets with same axis, the number and position of the piston as well as crank is corresponding to the cylinder, and the phase difference of two adjacent cranks is equal; the exhaust hole of each cylinder lies in the same side of the cylinder and on the wall of the cylinder, the lateral cylinder body nearby the cylinder exhaust hole has a exhaust channel which connects to the exhaust hole of each cylinder; the number of the air suction pipes is less than the number of the cylinders, the cylinders have air suction channel which connect with each other, the air suction pipe connects to the air suction channel of the cylinder. This invention can implement centralized air-breathing and exhaust, which improves the air stream characteristics of air suction side and exhaust side as well as dynamical characteristics, and also it is suitable for the gas compression refrigeration of the device such as air-condition.
Description
Technical field
The present invention relates to a kind of refrigeration compressor, relate in particular to a kind of rotary compressor of concentrating air-breathing and concentrated exhaust.
Background technique
Rotary compressor formal name used at school rolling piston compressor claims rolling rotor type compressor, rotor-type compressor again.It is designed to single-cylinder structure shown in Figure 1 substantially, promptly uses a cylinder to finish the work of air-breathing → compression → exhaust.When compressor during in frequency conversion condition and high-power range applications, the vibration and the noise problem of traditional single-cylinder compressor are very outstanding, and efficient also descends to some extent.
For this reason, the compressor of double-cylinder structure arises at the historic moment, and as shown in Figure 2, it is the cylinder that two same specifications are set in coaxial direction, and the phase difference of two crank throws is 180 ° on the bent axle, and two cylinders insert two independently sucking pipes respectively.During the compressor operating of this kind structure, unbalanced force on two crank throws is owing to differ 180 ° and offset voluntarily on the direction, only need to dispose in addition two less balancer weights to eliminate unbalance moment, thereby compare the dynamic property of having improved compressor with the single-cylinder structure, reduced mechanical vibration and mechanicalness noise.Double-cylinder compressor is compared with the single-cylinder compressor of same displacement, and its running resistance square has reduced over half, so the double-cylinder compressor operation stability is compared with the single-cylinder structure and is greatly improved.
Yet the pulsation of air-flow can cause fluid noise, is the important noise source of compressor.Above-mentioned traditional double-cylinder compressor has two independently sucking pipes, basic identical with single cylinder compressor of the gas in its sucking pipe, and the sucking pipe total length increases, therefore the also increase thereupon of fluid noise that causes along the gas of sucking pipe.For this reason, again the structure of traditional double cylinder compressors is improved, as shown in Figure 3, cancelled the way that each original cylinder respectively connects an individual induction tube, change into and only use a sucking pipe concentrated air-breathing, near the intakeport of cylinder, again gas is diverted to another cylinder.Concentrated air suction structure after this improvement and original traditional double-cylinder compressor adopt respectively independently air suction structure to compare, fluid noise along the sucking pipe total length has obtained very big improvement, and when branching to another cylinder for concentrated sucking pipe end gas, because the gas flow process is very short and the obstruct of the parts such as cylinder wall of big thickness, it is just very little to leak into the external fluid sound of compression case.So just reached the purpose that reduces noise.
Yet the double-cylinder compressor after this improvement has just improved the stream condition of suction side, and the stream condition of original compressor power characteristic and exhaust side remains unchanged.Especially, no matter single-cylinder compressor or double-cylinder compressor, its total exhaust all is interrupted and discontinuous.Under the general operating mode, the crank angle of correspondence was about 220 ° when compressor air-discharging began, and was 220 °～360 ° for its exhaust angular range of single-cylinder compressor, all the other not exhausts of angle; For double-cylinder compressor, exhaust angle of two cylinders differs 180 ° about it, is respectively 40 °～180 ° and 220 °～360 °, all the other not exhausts of angle.In addition, the exhaust of cylinder is axial exhaust, and the air-flow pulse that interrupted exhaust and axial exhaust are brought has then increased the fluid noise of compressor.
Summary of the invention
The object of the present invention is to provide a kind of rotary compressor of concentrating air-breathing and concentrated exhaust, so that by concentrating air-breathing and concentrated exhaust to improve the stream condition of suction side and exhaust side simultaneously, reduce the compressor fluid noise, simultaneously, adopt multi-cylinder structure (for realizing purpose of the present invention, must adopt three cylinders at least) further improve the dynamic property of compressor to improve its operation stability, minimizing power loss, reduction mechanicalness noise.
Purpose of the present invention is achieved by the following technical programs:
The invention provides a kind of rotary compressor of concentrating air-breathing and exhaust, comprise housing, movement, sucking pipe, motor stator and rotor and liquid-storage container, described movement comprises frame, has the bent axle of returnning, cylinder, piston and cylinder head, and piston is eccentrically set on the inwall of cylinder and is connected on the crank throw of bent axle; Described cylinder has three at least, each cylinder is coaxial to be arranged between frame and the cylinder head, the number of piston and crank throw and position are corresponding with cylinder, adjacent two crank throws phase difference spatially equates (to be that phase difference between crank throw is 360 °/N, N is the cylinder number, for typical three cylinder structures, the phase difference between N=3, three crank throws is 120 °); The exhaust port of described each cylinder is positioned at the same side of cylinder and is located on the cylinder wall, and the outside cylinder body at cylinder block pore place is provided with an exhaust passage, and the exhaust port of each cylinder is communicated with the exhaust passage, and the upper end of exhaust passage is provided with relief opening; The concentrated air suction structure that the present invention is alleged is meant that the number of sucking pipe is less than the structural design of cylinder number, and each cylinder all offers the air-breathing duct that is interconnected, and described sucking pipe is connected on one or several cylinder suction duct.
The present invention is with regard to three minimum cylinders, differ 120 ° successively at each cylinder block air horn of exhaust side, it is respectively 220 °～360 °, 340 °～120 ° and 100 °～240 °, therefore in whole period of revolution 0 °～360 ° scopes, observe from the aperture, exhaust passage, realized continuous exhaust pneumatic wallop, and middle cylinder and cylinder up and down respectively can exhausts simultaneously in certain angular range, this will help the further improvement of discharge characteristic, thus essence eliminated the gas noise that causes owing to exhaust is discontinuous.Simultaneously, the exhaust port of each cylinder is positioned at the same side of cylinder and is located on the cylinder wall and is radially exhaust, by adopting suitable exhaust structure, clearance volume can be reduced to minimum, obtains bigger volumetric efficiency, and then improves the efficient of compressor.
Under the same displacement situation, its running resistance square of three cylinder compressors of the present invention is 1/3 of a double-cylinder compressor, is 1/10 of single-cylinder compressor.Therefore, can eliminate the vibration and the noise of the component of machine that the fluctuation owing to resisting moment causes largely, improve the operation stability and the efficient of compressor.
The present invention because the number of sucking pipe is less than the cylinder number, belongs to concentrated air suction structure in suction side, at least three cylinders is set can realizes air-breathingly continuously more stably, helps further improving the stream condition of suction side.
The present invention can do following further improvement: the top exhaust silencer that also is provided with of described frame, and frame is provided with the frame through hole, and the exhaust passage is communicated to exhaust silencer by relief opening on it and frame through hole.Border effect factually, the through hole on the frame can be coaxial with the aperture, exhaust passage on the cylinder body, also can disalignment but offer guiding gutter at the casing top half radial surface aperture is linked to each other with the frame through hole; The diameter of frame through hole can equal, also can be less than the diameter in aperture, exhaust passage, and as much as possible the interrupted exhaust noise of each cylinder is enclosed in the exhaust passage.
For further reducing gas, the exhaust port of each cylinder of the present invention is near the middle part of whole cylinder group.
Can also be provided with down exhaust silencer on the cylinder head of the present invention, on the lower end of exhaust passage and the cylinder head respectively correspondence be provided with down relief opening and cylinder head through hole, down relief opening and cylinder head through hole are communicated to down exhaust silencer by it in the exhaust passage.The diameter of cylinder head through hole can equal, also can be less than the diameter in aperture, exhaust passage, but this its effect to the air-flow buffering of exhaust silencer at present helps to reduce the air-flow pulse.And less cylinder head through hole can play the effect of throttling step-down noise abatement.
The present invention can be provided with three cylinders particularly, and corresponding each cylinder has three crank throws are arranged on three pistons and the bent axle, and described crank throw phase difference spatially is 120 °; Described and the sucking pipe cylinder suction hole link is one.The inwall relative with suction port is ramp structure in the air-breathing duct of upper and lower two cylinders.Wherein with the air-breathing hole link of sucking pipe and middle cylinder or steam, and the inwall relative with suction port is that ramp structure is an optimum scheme in the air-breathing duct of upper and lower two cylinders, also can with this sucking pipe and casing top half or down cylinder link as alternative.Three cylinders perhaps are set, and corresponding each cylinder has three crank throws is arranged on three pistons and the bent axle, and described crank throw phase difference spatially is 120 °; Described and the sucking pipe cylinder suction hole link is two.Be optimum scheme with the air-breathing hole link of upper and lower cylinder respectively wherein with two sucking pipes, also can with in, cylinder/casing top half is communicated with as two alternatives down.
The present invention also can be provided with four cylinders particularly, and corresponding each cylinder has four crank throws are arranged on four pistons and the bent axle, and described crank throw phase difference spatially is 90 °; Described and the sucking pipe cylinder suction hole link is two.Wherein with two sucking pipes respectively with the air-breathing hole link of middle two cylinders, the inwall relative with suction port is that ramp structure is an optimum scheme in the air-breathing duct of upper and lower two cylinders.Theoretically, other of four cylinders and two sucking pipes connects the scheme number can be obtained with the algorithm of combination=and 5, all can be used as alternative.
The present invention has following beneficial effect:
(1) because compressor has been realized continuous exhaust pneumatic wallop (observing from the aperture, exhaust passage), the fluid noise of exhaust side can access very big improvement.Simultaneously be radially exhaust on the cylinder wall,, make cylinder have bigger volumetric efficiency, improved the efficient of compressor by adopting suitable outlet valve (as barrel valve) owing to the exhaust port of cylinder all is opened in.
(2) effectively reduced the running resistance square, improved the compressor power performance, made the mechanical vibration of compressor movement obtain very big improvement, corresponding mechanicalness noise is subdued significantly, the mechanical output loss reduces, and gas leakage weakens, and has improved the operation stability and the efficient of compressor.
(3) suction side is also air-breathing continuously for concentrating, and has further improved the stream condition of suction side.The inspiratory airflow velocity fluctuation is 1/25 of a single-cylinder compressor, is to concentrate 1/5 of air-breathing double-cylinder compressor.Show thus, can almost completely eliminate the fluid noise that causes, thereby reduce compressor complete machine noise significantly because inspiratory airflow is pulsed.
Description of drawings
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing:
Fig. 1 is the structural representation of prior art single-cylinder compressor;
Fig. 2 is the structural representation of one of prior art double-cylinder compressor;
Fig. 3 is two a structural representation of prior art double-cylinder compressor;
Fig. 4 is the structural representation of one of embodiment of the invention;
Fig. 5 is two a structural representation of the embodiment of the invention;
Fig. 6 be one of embodiment of the invention and two in the structural representation of bent axle;
Fig. 7 is three a structural representation of the embodiment of the invention;
Fig. 8 is four a structural representation of the embodiment of the invention.
Embodiment
Fig. 4 and Figure 6 shows that one of embodiments of the invention comprises housing, movement, sucking pipe, motor stator and rotor and liquid-storage container, and wherein movement comprises frame 2, has bent axle 1, cylinder, piston, cylinder head 12 and the last exhaust silencer 3 of returnning.As shown in Figure 4, cylinder has three, is respectively casing top half 4, middle cylinder 8 and following cylinder 11, and each cylinder is coaxial to be arranged between frame 2 and the cylinder head 12, and is separated by upper clapboard 6 and lower clapboard 9; Corresponding each cylinder has three pistons, is respectively casing top half piston 16, middle steam-cylinder piston 15 and following steam-cylinder piston 13, and each piston is eccentrically set in the corresponding cylinder.As shown in Figure 6, corresponding piston has three crank throws on the bent axle, and being respectively crank throw 17, middle crank throw 18 and 19, three crank throws of following crank throw phase difference spatially is 120 °.Each crank throw cooperates with corresponding piston clearance.
The exhaust port of each cylinder is positioned at the same side of cylinder and is located on the cylinder wall, makes the exhaust of cylinder be radially exhaust, and casing top half exhaust port 5 and following cylinder block pore 10 are near middle cylinder 8.The outside at cylinder block pore place is provided with an exhaust passage 20, and the exhaust port of each cylinder is communicated with this exhaust passage, and the upper end of exhaust passage is last relief opening 21; Last exhaust silencer 3 be arranged on frame 2 above, last relief opening 21 places of frame 2 corresponding exhaust passages are provided with frame through hole 22, exhaust passage 20 is communicated to exhaust silencer 3 by relief opening on it 21 and frame through hole 22.The air outlet 23 of last exhaust silencer 3 is arranged on a side that staggers with frame through hole 22, and this air outlet can have 3～5 or more.
Each cylinder all offers the air-breathing duct that is interconnected, and a shared sucking pipe 14, and this sucking pipe is communicated with middle cylinder suction duct 24; The inwall relative with suction port is ramp structure in the upper and lower cylinder suction duct 25,26.
The assembly problem of crank throw and piston in the bent axle can be by adjusting the crank throw width or adjusting the crank throw spacing or adjust width and spacing simultaneously, makes distance between crank throw be slightly larger than the axial width of piston, solves.
During compressor operating, because the rotation of the off-centre of cylinder inner carrier, gas is inhaled in the cylinder through air-breathing duct separately from sucking pipe 14, discharges from the cylinder block pore through Piston Compression, enter exhaust silencer 3 by exhaust passage 20, discharge from the air outlet 23 of last exhaust silencer then.Therefore the exhaust angle of three cylinders differs 120 ° successively, is respectively 220 °～360 °, 340 °～120 ° and 100 °～240 °, in whole period of revolution 0 °～360 ° scopes, observes from the aperture, exhaust passage, has realized continuous exhaust pneumatic wallop.
Embodiment two:
Fig. 5 and Figure 6 shows that two of embodiments of the invention, different with embodiment one is: also be provided with down exhaust silencer 27 on the cylinder head 12, on the lower end of exhaust passage 20 and the cylinder head 12 respectively correspondence be provided with down relief opening 28 and cylinder head through hole 29, down relief opening 28 and cylinder head through hole 29 are communicated to down exhaust silencer 27 by it in exhaust passage 20.The portion gas that discharge from cylinder this moment can enter down exhaust silencer 27 by the following relief opening 28 and the cylinder head through hole 29 of exhaust passage, and air-flow is cushioned, and helps to reduce the air-flow pulse.
Embodiment three:
Fig. 7 is described to be three of embodiments of the invention, and different with embodiment two is: have two sucking pipes 14 and 14 ', the air- breathing duct 25,26 with casing top half 4 and following cylinder 11 is communicated with respectively.
Embodiment four:
Figure 8 shows that four of embodiments of the invention, different with embodiment two is: following cylinder 11 following also increased a cylinder 30, and correspondence is set up piston 34 and crank throw 35, makes compressor have four cylinders, and four crank throws phase difference spatially is 90 °.The top of cylinder 30 its cylinder walls is provided with the exhaust port 31 that is communicated with exhaust passage 20, and suction side is provided with the air-breathing duct 32 with other cylinder suction hole links.Have two sucking pipes 14 and 14 ', be communicated with the air- breathing duct 24,26 of two cylinders 8,11 of centre respectively.
Claims (10)
1, a kind of rotary compressor of concentrating air-breathing and concentrated exhaust, comprise housing, movement, sucking pipe, motor stator and rotor and liquid-storage container, described movement comprises frame (2), has the bent axle (1) of returnning, cylinder, piston and cylinder head (12), and piston is eccentrically set on the inwall of cylinder and is connected on the crank throw of bent axle (1); It is characterized in that: described cylinder has three at least, and each cylinder is coaxial to be arranged between frame (2) and the cylinder head (12), and the number of piston and crank throw and position are corresponding with cylinder, and adjacent two crank throws phase difference spatially equates; The exhaust port of described each cylinder is positioned at the same side of cylinder and is located on the cylinder wall, the outside cylinder body at cylinder block pore place is provided with an exhaust passage (20), the exhaust port of each cylinder is communicated with exhaust passage (20), and the upper end of exhaust passage (20) is provided with relief opening (21); The number of described sucking pipe is less than the number of cylinder, and each cylinder all offers the air-breathing duct that is interconnected, and described sucking pipe is connected on the cylinder suction duct.
2, the rotary compressor of concentrating air-breathing and concentrated exhaust according to claim 1, it is characterized in that: the top exhaust silencer (3) that also is provided with of described frame (2), frame (2) is provided with frame through hole (22), and exhaust passage (20) are communicated to exhaust silencer (3) by relief opening on it (21) and frame through hole (22).
3, the rotary compressor of concentrating air-breathing and concentrated exhaust according to claim 1, it is characterized in that: the exhaust port of described each cylinder is near the middle part of whole cylinder group.
4, the rotary compressor of concentrating air-breathing and concentrated exhaust according to claim 1, it is characterized in that: also be provided with down exhaust silencer (27) on the described cylinder head (12), on the lower end of exhaust passage (20) and the cylinder head (12) respectively correspondence be provided with down relief opening (28) and cylinder head through hole (29), exhaust passage (20) down relief opening (28) and cylinder head through hole (29) are communicated to down exhaust silencer (27) by it.
5, according to each described rotary compressor of concentrating air-breathing and concentrated exhaust of claim 1-4, it is characterized in that: described cylinder has three, corresponding each cylinder has three crank throws is arranged on three pistons and the bent axle, and described crank throw phase difference spatially is 120 °; Described and the sucking pipe cylinder suction hole link is one.
6, the rotary compressor of concentrating air-breathing and concentrated exhaust according to claim 5, it is characterized in that: described sucking pipe (14) is communicated with the air-breathing duct (24) of middle cylinder or steam (8), and the inwall relative with suction port is ramp structure in the air-breathing duct (25,26) of upper and lower two cylinders (4,11).
7, according to each described rotary compressor of concentrating air-breathing and concentrated exhaust of claim 1-4, it is characterized in that: described cylinder has three, corresponding each cylinder has three crank throws is arranged on three pistons and the bent axle, and described crank throw phase difference spatially is 120 °; Described and the sucking pipe cylinder suction hole link is two.
8, the rotary compressor of concentrating air-breathing and concentrated exhaust according to claim 7, it is characterized in that: described two sucking pipes (14,14 ') are communicated with the air-breathing duct (25,26) of upper and lower cylinder (4,11) respectively.
9, according to each described rotary compressor of concentrating air-breathing and concentrated exhaust of claim 1-4, it is characterized in that: described cylinder has four, corresponding each cylinder has four crank throws is arranged on four pistons and the bent axle, and described crank throw phase difference spatially is 90 °; Described and the sucking pipe cylinder suction hole link is two.
10, the rotary compressor of concentrating air-breathing and concentrated exhaust according to claim 9, it is characterized in that: described two sucking pipes (14,14 ') are communicated with the air-breathing duct (24,26) of middle two cylinders respectively, and the inwall relative with suction port is ramp structure in the air-breathing duct of upper and lower two cylinders (25,32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100547768A CN100353072C (en) | 2004-04-29 | 2004-07-20 | Rotary compressor of centralized air-breathing and exhaust |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420045356 | 2004-04-29 | ||
| CN200420045356.9 | 2004-04-29 | ||
| CNB2004100547768A CN100353072C (en) | 2004-04-29 | 2004-07-20 | Rotary compressor of centralized air-breathing and exhaust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1693708A CN1693708A (en) | 2005-11-09 |
| CN100353072C true CN100353072C (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100547768A Expired - Fee Related CN100353072C (en) | 2004-04-29 | 2004-07-20 | Rotary compressor of centralized air-breathing and exhaust |
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| Country | Link |
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| CN (1) | CN100353072C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104641113A (en) * | 2012-09-26 | 2015-05-20 | 帝人制药株式会社 | Compressor |
| CN104632623B (en) * | 2013-12-23 | 2017-02-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage compressor |
| CN108869290A (en) * | 2018-08-03 | 2018-11-23 | 天津商业大学 | One big two small cylinder parallel connection compressor with rolling rotor of sliding slot parallel arrangement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041342C (en) * | 1994-12-28 | 1998-12-23 | 东芝株式会社 | Rotary compressor |
| CN1345572A (en) * | 2000-09-28 | 2002-04-24 | Ge医疗系统环球技术有限公司 | X ray CT system, frame, operation platform terminal, control method and memory |
| CN1115484C (en) * | 1995-11-03 | 2003-07-23 | 运载器有限公司 | Rotary compressor |
-
2004
- 2004-07-20 CN CNB2004100547768A patent/CN100353072C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041342C (en) * | 1994-12-28 | 1998-12-23 | 东芝株式会社 | Rotary compressor |
| CN1115484C (en) * | 1995-11-03 | 2003-07-23 | 运载器有限公司 | Rotary compressor |
| CN1345572A (en) * | 2000-09-28 | 2002-04-24 | Ge医疗系统环球技术有限公司 | X ray CT system, frame, operation platform terminal, control method and memory |
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| CN1693708A (en) | 2005-11-09 |
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Granted publication date: 20071205 Termination date: 20110720 |