CN111173740A - Scroll compressor with asymmetric molded lines - Google Patents
Scroll compressor with asymmetric molded lines Download PDFInfo
- Publication number
- CN111173740A CN111173740A CN202010071796.5A CN202010071796A CN111173740A CN 111173740 A CN111173740 A CN 111173740A CN 202010071796 A CN202010071796 A CN 202010071796A CN 111173740 A CN111173740 A CN 111173740A
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- CN
- China
- Prior art keywords
- exhaust
- scroll wrap
- scroll
- wrap
- compressor
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- 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
- 238000007906 compression Methods 0.000 claims abstract description 54
- 230000006835 compression Effects 0.000 claims abstract description 52
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000010349 pulsation Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract 5
- 239000007789 gas Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
- F04C29/0035—Equalization of pressure pulses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a scroll compressor with an asymmetric molded line, which comprises a static disc scroll wrap and a movable disc scroll wrap which moves in a matched manner around the static disc scroll wrap, wherein an exhaust hole is formed in the center of a bottom plate of the static disc scroll wrap, one ends of the static disc scroll wrap and the movable disc scroll wrap, which are close to the exhaust hole, are mutually meshed to form an exhaust cavity, the inner side and the outer side of one end of the movable disc scroll wrap, which is close to the exhaust cavity, sequentially form a first compression cavity and a second compression cavity with the static disc scroll wrap, and the exhaust angle of the second compression cavity is 0-180 degrees smaller than that of the first compression cavity. According to the scroll compressor with the asymmetric molded line, the exhaust angle of the second compression cavity is 0-180 degrees smaller than that of the first compression cavity, so that the second compression cavity with a larger volume exhausts in advance, namely asynchronous exhaust is realized, and the volumetric efficiency and the heat insulation efficiency of the compressor are greatly improved; the exhaust loss, the amplitude of exhaust pressure pulsation and exhaust volume fluctuation are reduced, and the operation stability of the compressor is improved.
Description
Technical Field
The invention belongs to the technical field of scroll compressors, and particularly relates to a scroll compressor with an asymmetric molded line.
Background
The scroll compressor is a new type of positive displacement compressor developed in the 70's of the 20 th century. Compared with the traditional reciprocating compressor, the scroll compressor has the advantages of few parts, stable operation, low noise, high efficiency and the like, and is widely applied to the fields of air-conditioning refrigeration and the like. The scroll molded lines are the basis and the key for the efficient operation of the scroll compressor, the scroll molded lines are mainly used for structural design and performance analysis of the scroll compressor, and the performance of the scroll molded lines determines various factors such as the performance, the volume efficiency, the reliability and the stability of the scroll compressor to a great extent, so that the scroll molded lines have very important significance for the performance analysis of the whole scroll compressor.
The existing asynchronous suction scroll compressor is asynchronous suction and synchronous exhaust, so that the adverse effect of the unequal compression time of two working chambers is that the pressure of gas in the chambers is unequal, meanwhile, the pressure in the working chambers is higher than the exhaust pressure when the compressor guarantees the working capacity and exhaust is necessary, when the working chambers with lower pressure reach the required pressure, the pressure in the working chambers with higher pressure is far higher than the exhaust pressure, the compression degree is too high, the motor power is wasted by the over-compression, and the reduction of the heat insulation efficiency is caused. And the pressures of the two working cavities are not equal, when the exhaust starts, at the opening moment of the exhaust port, the two gases with different pressures are mixed, so that the exhaust pressure pulsation and the irreversible exhaust loss are caused, the efficiency is further reduced, and the vibration and the noise are caused.
Disclosure of Invention
The invention aims to provide a scroll compressor with an asymmetric molded line, which improves the heat insulation efficiency and the exhaust stability of the scroll compressor.
The technical scheme adopted by the invention is as follows: the utility model provides a scroll compressor with asymmetric molded lines, include quiet set scroll wrap and the driving disk scroll wrap around the cooperation translation of quiet set scroll wrap, the exhaust hole has been seted up at the bottom plate center of quiet set scroll wrap, quiet set scroll wrap is formed with the exhaust chamber with the one end intermeshing that driving disk scroll wrap is close to the exhaust hole, the inside and outside both sides of one end that driving disk scroll wrap is close to the exhaust chamber form first compression chamber and second compression chamber with quiet set scroll wrap in proper order, the exhaust angle in second compression chamber is 0 ~ 180 less than the exhaust angle in first compression chamber.
The present invention is also characterized in that,
and the end head of one end of the movable disc scroll wrap, which is close to the exhaust hole, is provided with molded line correction.
The end of the movable scroll wrap close to the exhaust hole is not longer than the end of the fixed scroll wrap close to the exhaust hole.
The involute of one end of the movable scroll wrap close to the exhaust hole is 0-180 degrees shorter than the involute of one end of the fixed scroll wrap close to the exhaust hole.
The internal volume ratio of the first compression chamber and the second compression chamber is the same.
The exhaust hole is internally tangent between one end of the fixed scroll wrap close to the exhaust hole and the molded line on the inner side of the fixed scroll wrap.
The distance between the center of the exhaust hole and the end of the movable disc scroll wrap close to one end of the exhaust hole is not less than the radius of the exhaust hole.
The invention has the beneficial effects that: according to the scroll compressor with the asymmetric molded line, the exhaust angle of the second compression cavity is 0-180 degrees smaller than that of the first compression cavity, so that the second compression cavity with a larger volume exhausts in advance, namely asynchronous exhaust is realized, and the volumetric efficiency and the heat insulation efficiency of the compressor are greatly improved; the exhaust loss of the second compression cavity with larger volume and the exhaust loss caused by mixing of different pressure gases when the two compression cavities are communicated are reduced, the amplitude of exhaust pressure pulsation and exhaust volume fluctuation is reduced, and the operation stability of the compressor is improved.
Drawings
FIG. 1 is a schematic view of a scroll compressor having an asymmetric profile according to the present invention;
FIG. 2 is an enlarged fragmentary view of a scroll compressor of the present invention having an asymmetric profile.
In the figure, 1 is a fixed scroll wrap, 2 is a movable scroll wrap, 3 is an exhaust hole, 4 is an exhaust cavity, 5 is a first compression cavity, 6 is a second compression cavity, 7 is molded line correction, and 8 is an air suction port.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a scroll compressor with asymmetric molded lines, as shown in figures 1 and 2, the scroll compressor comprises a fixed scroll wrap 1 and a movable scroll wrap 2 which moves in a translation manner in a matching manner around the fixed scroll wrap 1, a circular involute of the fixed scroll wrap 1 extends to an air suction port 8, an exhaust hole 3 is formed in the center of a bottom plate of the fixed scroll wrap 1, in order to fully utilize an exhaust cavity 4, the exhaust hole 3 is internally tangent between the end head of one end, close to the exhaust hole 3, of the fixed scroll wrap 1 and the molded line on the inner side of the fixed scroll wrap 1, the distance between the center of the exhaust hole 3 and the end head of one end, close to the exhaust hole 3, of the movable scroll wrap 2 is not smaller than the radius of the exhaust hole 3, the exhaust cavity 4 is formed by mutually meshing the fixed scroll wrap 1 and one end, close to the exhaust cavity 3, the inner side and the outer side of one end, close to the exhaust cavity 4, of the, the discharge angle of the second compression chamber 6 is 0 to 180 degrees smaller than that of the first compression chamber 1.
In the prior art, the volume of the compression cavity corresponding to the second compression cavity 6 is relatively large, and the pressure of the second compression cavity is far higher than the exhaust pressure and the pressure of the first compression cavity 5 for starting to exhaust, so that relatively large exhaust loss is caused, and the isentropic efficiency is reduced. According to the invention, the molded line correction 7 is arranged at the end of the movable disc scroll wrap 2 close to the exhaust hole 3, namely, the end of the movable disc scroll wrap 2 close to the exhaust hole 3 is not longer than the end of the fixed disc scroll wrap 1 close to the exhaust hole 3, so that the exhaust angle of the second compression cavity 6 is ensured to be 0-180 degrees smaller than that of the first compression cavity 5, the exhaust is promoted to be exhausted in advance, the exhaust pressure is reduced, the internal volume ratio of the second compression cavity 6 is reduced, and the asynchronous exhaust is realized.
As a preferable scheme of the present invention, when the sizes of the internal volume ratios of the first compression chamber 5 and the second compression chamber 6 are the same, the internal volume ratio of the first compression chamber 5 when communicating with the exhaust chamber 4 is calculated, and then the angle of the second compression chamber 6 when communicating with the exhaust chamber 4 and the connection between the first compression chamber 5 and the exhaust chamber 4 under the same internal volume ratio are calculatedThe difference between the initial angles of the movable scroll wrap 2 and the fixed scroll wrap 1 during the on-state
I.e. difference in exhaust angle
The following formula
In the formula (I), the compound is shown in the specification,
the inner side of the involute of the orbiting scroll 2 starts to spread;
the initial spread angle of the inner side of the circular involute of the fixed scroll wrap 1;
the final angle of expansion of the outer side of the involute of the orbiting scroll 2;
and the final angle of expansion of the outer side of the involute of the fixed disk scroll wrap 1.
The tooth end of the movable plate scroll wrap 2 is shorter than the tooth end of the fixed plate scroll wrap 1
The angle, second compression chamber 6 reaches the same interior volume ratio with first compression chamber 5 like this, and when 2 outer involute of movable disk scroll tooth and 1 interior involute of quiet dish scroll tooth were engaged in, first compression chamber 5 was still continuing compression, and 1 outer involute of quiet dish scroll tooth still did not disengage in 2 interior involute of movable disk scroll tooth. At this time, the parameters such as the pressure difference between the two compression chambers, the exhaust loss, the degree of over-compression, the heat insulation efficiency and the like are better.
Through the mode, according to the scroll compressor with the asymmetric molded line, the exhaust angle of the second compression cavity 6 is smaller than that of the first compression cavity 5 by 0-180 degrees, so that the second compression cavity 6 with a larger volume is exhausted in advance, namely asynchronous exhaust is realized, and the volumetric efficiency and the heat insulation efficiency of the compressor are greatly improved; the exhaust loss of the second compression cavity 6 with larger volume and the exhaust loss caused by the mixing of different pressure gases when the two compression cavities are communicated are reduced, the amplitude of exhaust pressure pulsation and exhaust volume fluctuation is reduced, and the operation stability of the compressor is improved.
Claims (7)
1. The utility model provides a scroll compressor with asymmetric molded lines, a serial communication port, including quiet set vortex tooth (1) and movable disk vortex tooth (2) around quiet set vortex tooth (1) cooperation translation, exhaust hole (3) have been seted up at the bottom plate center of quiet set vortex tooth (1), quiet set vortex tooth (1) and movable disk vortex tooth (2) are close to one end intermeshing in exhaust hole (3) and are formed with exhaust chamber (4), the inside and outside both sides of one end that movable disk vortex tooth (2) are close to exhaust chamber (4) form first compression chamber (5) and second compression chamber (6) with quiet set vortex tooth (1) in proper order, the exhaust angle of second compression chamber (6) is 0 ~ 180 less than the exhaust angle of first compression chamber (1).
2. A scroll compressor with asymmetric profile according to claim 1, wherein the end of the orbiting plate wrap (2) near the discharge hole (3) is provided with a profile correction (7).
3. A scroll compressor having an asymmetric profile as claimed in claim 1, wherein the end of the orbiting scroll wrap (2) adjacent the discharge port (3) is no longer than the end of the stationary scroll wrap (1) adjacent the discharge port (3).
4. A scroll compressor having an asymmetric profile as claimed in claim 3, wherein an involute of an end of said orbiting scroll wrap (2) adjacent to said discharge port (3) is shorter by 0 ° to 180 ° than an involute of an end of said stationary scroll wrap (1) adjacent to said discharge port (3).
5. A scroll compressor with asymmetric profile according to any of claims 1 to 4, characterized by the fact that the internal volume ratio of the first compression chamber (5) and the second compression chamber (6) is of the same size.
6. A scroll compressor with asymmetric profile according to claim 1, wherein said discharge hole (3) is inscribed between the end of the fixed scroll wrap (1) near the discharge hole (3) and the profile inside the fixed scroll wrap (1).
7. A scroll compressor with asymmetric profile as claimed in claim 6, wherein the distance between the center of the discharge hole (3) and the end of the orbiting scroll wrap (2) near the discharge hole (3) is not less than the radius of the discharge hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071796.5A CN111173740A (en) | 2020-01-21 | 2020-01-21 | Scroll compressor with asymmetric molded lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071796.5A CN111173740A (en) | 2020-01-21 | 2020-01-21 | Scroll compressor with asymmetric molded lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173740A true CN111173740A (en) | 2020-05-19 |
Family
ID=70652914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010071796.5A Pending CN111173740A (en) | 2020-01-21 | 2020-01-21 | Scroll compressor with asymmetric molded lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111173740A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832266A (en) * | 2010-03-10 | 2010-09-15 | 广东正力精密机械有限公司 | Efficient scroll compressor |
| CN106989020A (en) * | 2017-06-08 | 2017-07-28 | 中国石油大学(华东) | A kind of non-lubricated vortex vavuum pump |
| WO2017219660A1 (en) * | 2016-06-21 | 2017-12-28 | 广东美的暖通设备有限公司 | Scroll compressor and air conditioner |
| CN212454812U (en) * | 2020-01-21 | 2021-02-02 | 西安理工大学 | Scroll compressor with high heat insulation efficiency and high exhaust stability |
-
2020
- 2020-01-21 CN CN202010071796.5A patent/CN111173740A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832266A (en) * | 2010-03-10 | 2010-09-15 | 广东正力精密机械有限公司 | Efficient scroll compressor |
| WO2017219660A1 (en) * | 2016-06-21 | 2017-12-28 | 广东美的暖通设备有限公司 | Scroll compressor and air conditioner |
| CN106989020A (en) * | 2017-06-08 | 2017-07-28 | 中国石油大学(华东) | A kind of non-lubricated vortex vavuum pump |
| CN212454812U (en) * | 2020-01-21 | 2021-02-02 | 西安理工大学 | Scroll compressor with high heat insulation efficiency and high exhaust stability |
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