CN112746956A

CN112746956A - Vortex air compressor

Info

Publication number: CN112746956A
Application number: CN202110045732.2A
Authority: CN
Inventors: 李楠
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-05-04

Abstract

The invention relates to the technical field of air compression and discloses a scroll air compressor. The power machine can drive the lubricating oil in the lubricating cavity to generate vortex in the process of running and driving the impeller to rotate, the lubricating oil can enter the liquid guide pipe under the action of centrifugal force when the outer side of the vortex is in contact with the round through hole at the bottom of the lubricating cavity, the content of the lubricating oil in the lubricating cavity is reduced, so that the pressure in the lubricating cavity is reduced, the lubricating oil in the liquid storage chamber enters the lubricating cavity through the liquid inlet pipe to be supplemented, the lubricating oil in the liquid guide pipe flows under the action of the impeller, the problem that the service life is too short due to overlarge friction force between the swing groove, the swing limiting rod and the limiting ring is solved, and the use cost of the device is reduced.

Description

Vortex air compressor

Technical Field

The invention relates to the technical field of air compression, in particular to a scroll air compressor.

Background

The principle of the scroll air compressor is that two compression cavities with thread shapes are matched with each other, gas moves to the central position along the compression cavities with thread shapes under the action of rotation, the volume of the gas is continuously reduced in the moving process until the gas reaches the central position and is discharged from a gas hole, and therefore the compression process is completed.

Although the traditional scroll air compressor has certain advantages, some limitations still exist, in the process of compression of the traditional device, the pressure is increased more and more in the process of moving gas to the center, and the pressure directly acts on the compression cavity, so that the stress of some limiting components on the compression cavity is increased, the friction force applied to the limiting components in the operation process is increased, the severe service life of the limiting components is reduced, meanwhile, when the compression cavities with two thread shapes are in mutual contact, although the compression efficiency is higher, the service life of the compression cavity is reduced due to the friction generated between the two compression cavities with the two thread shapes, the compressed gas can be leaked through the gap to reduce the compression efficiency, and therefore, the scroll air compressor is provided by the application document and aims to solve the problems.

Disclosure of Invention

Aiming at the defects of the existing air compression machine in the background technology in the using process, the invention provides a vortex air compressor which has the advantage of reducing the friction between limiting components and solves the problem of low service life of the limiting components.

The invention provides the following technical scheme: the utility model provides a scroll air compressor, includes the base, fixed mounting has the shell on the position that the base top is located the outside, fixed mounting has the engine on the position that just is located the shell inside on the center of base top, the fixed shell that has cup jointed just is located the position of engine top to the inner wall of shell, the fixed shell that has cup jointed in the inside of fixed shell has cup jointed lubricating arrangement, fixed mounting has the liquid reserve chamber on the position that the shell surface is close to the top, the liquid reserve chamber is linked together with lubricating arrangement, the fixed cup jointing has lower compression device on the position that the shell inner chamber is close to the top, lower compression device's bottom is connected with the output shaft of engine, the top fixed mounting of shell has last compression device, the one end fixed mounting of engine output shaft has eccentric rotating device and lower compression device activity to.

Preferably, the lubricating device comprises a lubricating cavity, the lubricating cavity is filled with lubricating oil, two ends of the lubricating cavity are fixedly provided with sealing covers, the sealing cover is fixedly sleeved on the positions of the inner cavity of the fixed shell close to the two ends, a sealing bearing is fixedly sleeved on the position of one side of the sealing cover and the center, the inner part of the sealing bearing is fixedly sleeved with an output shaft of the power machine, the outer surface of the output shaft of the power machine and the position inside the sealing bearing are fixedly sleeved with an impeller, a round through hole is arranged at the bottom of the outer surface of the lubricating cavity, a liquid guide pipe is fixedly arranged at one end of the round through hole, one end of the liquid guide pipe is fixedly connected with the lower compression device, the top of the outer surface of the lubricating cavity is provided with a circular through hole, one end of the circular through hole is fixedly provided with a liquid inlet pipe, one end of the liquid inlet pipe is fixedly connected with the bottom of the liquid storage chamber and is communicated with the inner cavity of the liquid storage chamber.

Preferably, compression device includes spacing sleeve down, spacing sleeve's bottom and eccentric rotating device fixed connection, spacing ring channel has been seted up on the position that spacing sleeve inner wall just is located the centre, the quantity that the wobbling groove and the wobbling groove were seted up to the inside of spacing ring channel is three and distributes with the mode of annular array, the inside movable mounting of wobbling groove has the swing gag lever post, the inside activity of spacing ring channel has cup jointed the spacing ring, the quantity that spout and spout were seted up to the surface of spacing ring is three and mutually supports with the swing gag lever post, and fixed the cover has been cup jointed transmission sleeve on the inside of spacing ring, transmission sleeve's top fixed mounting has the compression base, the top fixed mounting of compression base has down the compression flight and the compression flight cooperatees with last compression device down.

Preferably, the bottom of the limiting sleeve is provided with a circular through hole, and one end of the circular through hole is fixedly connected with the liquid guide pipe and communicated with the limiting annular groove.

Preferably, the eccentric rotating device comprises an eccentric rotating shaft, the bottom of the eccentric rotating shaft is fixedly connected with one end of the output shaft of the power machine, an eccentric hole is formed in the top of the eccentric rotating shaft, a limiting bearing is fixedly sleeved inside the eccentric hole, a connecting shaft is fixedly sleeved inside the limiting bearing, and the connecting shaft is fixedly connected with the bottom of the limiting sleeve.

Preferably, the axis of the eccentric hole is not on the same central line with the axis of the output shaft of the power machine.

Preferably, go up compression device and include the compression chamber, go up compression chamber fixed mounting and pass through sealed processing between at the top of shell and, the outer fixed surface who goes up the compression chamber installs intake pipe and is linked together with the inner chamber in last compression chamber, the central point that goes up the compression chamber top puts fixed mounting and has blast pipe and the inner chamber in last compression chamber to be linked together, the top fixed mounting who goes up the compression chamber inner chamber has last compression flight and goes up compression flight and cooperate with lower compression flight.

Preferably, the upper compression spiral sheet comprises a compression sheet, sealing rubber sleeves are fixedly mounted on two sides of the compression sheet, cooling liquid is contained in the containing cavities of the sealing rubber sleeves, and the sealing rubber sleeves are made of soft wear-resistant rubber.

The invention has the following beneficial effects:

1. the impeller is fixedly sleeved on the outer surface of the output shaft of the power machine and positioned in the sealing bearing, so that lubricating oil in the lubricating cavity can be driven to generate vortex in the process of running and driving the impeller to rotate, the lubricating oil can enter the liquid guide pipe under the action of centrifugal force when the outer side of the vortex is in contact with the circular through hole at the bottom of the lubricating cavity, the content of the lubricating oil in the lubricating cavity is reduced, the pressure in the lubricating cavity is reduced, the lubricating oil in the liquid storage chamber enters the lubricating cavity through the liquid inlet pipe to be supplemented, the lubricating oil in the liquid guide pipe flows under the action of the impeller and is communicated with the limiting ring groove through the liquid guide pipe, so that the lubricating oil can flow into the limiting ring groove, is in contact with and lubricates the swinging groove, the swinging limiting rod and the limiting ring, and further avoids the swinging groove, the swinging limiting, The friction force between the swing limiting rod and the limiting ring is too large to cause the problem of too short service life, and the use cost of the device is reduced.

2. According to the invention, the sealing rubber sleeve is made of soft wear-resistant rubber, so that when the air pressure in the cavity between the upper compression spiral sheet and the lower compression spiral sheet is increased, the air pressure acts on the sealing rubber sleeve, and the cavity of the sealing rubber sleeve contains cooling liquid, so that the cooling liquid is pushed to move towards two sides of high-pressure air, the heights of the two sides are increased, the gap between the upper compression spiral sheet and the lower compression spiral sheet is filled up, thereby achieving a sealing state, the problem that the compressed air leaks out through the gap due to the gap reserved in the compression cavity with the thread shape is avoided, the compression efficiency of the device is improved, meanwhile, the cooling liquid in the sealing rubber sleeve can cool the sealing rubber sleeve, and meanwhile, the cooling liquid in the sealing rubber sleeve can synchronously flow under the action of the compressed air flowing towards the center, so that the high-frequency contact between the lower compression spiral sheet and the upper compression spiral sheet is avoided, and the temperature of the lower compression spiral sheet is too high, and the deformation is avoided The problem of poor sealing is caused, and the stability of the device in operation is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is a top schematic view of a structural compression device in accordance with the present invention;

FIG. 4 is a bottom schematic view of a structural compression device of the present invention;

FIG. 5 is a schematic cross-sectional view of a structural compression device in accordance with the present invention;

FIG. 6 is an enlarged view of the point A in FIG. 5;

FIG. 7 is a schematic view of a structural lubricating apparatus of the present invention;

FIG. 8 is a schematic cross-sectional view of a structural lubricating apparatus of the present invention;

FIG. 9 is an enlarged view of the point B in FIG. 2;

FIG. 10 is a schematic view of a compressor assembly constructed in accordance with the present invention;

FIG. 11 is a schematic cross-sectional view of a compressor constructed in accordance with the teachings of the present invention;

FIG. 12 is a schematic cross-sectional view taken along the direction A in FIG. 11 according to the present invention.

In the figure: 1. a base; 2. a housing; 3. a power machine; 4. a stationary case; 5. a lubricating device; 51. a lubrication chamber; 52. a sealing cover; 53. sealing the bearing; 54. an impeller; 55. a catheter; 56. a liquid inlet pipe; 6. a liquid storage chamber; 7. a lower compression device; 71. a limiting sleeve; 72. a limiting annular groove; 73. a swing groove; 74. swinging the limiting rod; 75. a limiting ring; 76. a drive sleeve; 77. compressing the base; 78. compressing the spiral sheet; 8. an upper compression device; 81. an upper compression chamber; 82. an air inlet pipe; 83. an exhaust pipe; 84. upper compression screw plate; 841. compressing the tablets; 842. sealing the rubber sleeve; 9. an eccentric rotating device; 91. an eccentric rotating shaft; 92. an eccentric hole; 93. a limit bearing; 94. and (7) connecting the shafts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, a scroll air compressor, a housing 2 is fixedly installed on the top of a base 1 at the outer side, a power machine 3 is fixedly installed on the top center of the base 1 at the inner position of the housing 2, a fixed housing 4 is fixedly sleeved on the inner wall of the housing 2 at the position above the power machine 3, a lubricating device 5 is fixedly sleeved inside the fixed housing 4, the lubricating device 5 comprises a lubricating cavity 51, the lubricating cavity 51 is filled with lubricating oil, two ends of the lubricating cavity 51 are both fixedly installed with sealing covers 52, the sealing covers 52 are fixedly sleeved on the positions of the inner cavity of the fixed housing 4 near the two ends, a sealing bearing 53 is fixedly sleeved on one side of the sealing cover 52 at the center position, the output shaft of the power machine 3 is fixedly sleeved inside the sealing bearing 53, an impeller 54 is fixedly sleeved on the outer surface of the output shaft of the power machine 3 at the position inside of the sealing bearing 53, the bottom of the outer surface of the lubricating cavity 51 is provided with a circular through hole, one end of the circular through hole is fixedly provided with a liquid guide pipe 55, one end of the liquid guide pipe 55 is fixedly connected with the lower compression device 7, the top of the outer surface of the lubricating cavity 51 is provided with a circular through hole, one end of the circular through hole is fixedly provided with a liquid inlet pipe 56, one end of the liquid inlet pipe 56 is fixedly connected with the bottom of the liquid storage chamber 6 and communicated with the inner cavity of the liquid storage chamber 6, the position of the outer surface of the shell 2, which is close to the top, is fixedly provided with the liquid storage chamber 6, the liquid storage chamber 6 is communicated with the lubricating device 5, the position of the inner cavity of the shell 2, which is close to the top, is fixedly connected with the lower compression device 7, the lower compression device 7 comprises a limiting sleeve 71, the bottom of the limiting sleeve 71 is provided with a, the inner wall of the limiting sleeve 71 and the middle position thereof are provided with a limiting ring groove 72, the limiting ring groove 72 is internally provided with three swing grooves 73, the number of the swing grooves 73 is distributed in a ring array mode, the inside of the swing groove 73 is movably provided with a swing limiting rod 74, the inside of the limiting ring groove 72 is movably sleeved with a limiting ring 75, the outer surface of the limiting ring 75 is provided with three sliding grooves, the number of the sliding grooves is matched with the swing limiting rod 74, the inside of the limiting ring 75 is fixedly sleeved with a transmission sleeve 76, the top of the transmission sleeve 76 is fixedly provided with a compression base 77, the top of the compression base 77 is fixedly provided with a lower compression spiral sheet 78, the lower compression spiral sheet 78 is matched with an upper compression device 8, the bottom of the lower compression device 7 is connected with the output shaft of the power machine 3, the top of the shell 2 is fixedly provided with an upper compression device 8, the upper compression device 8 comprises an, the upper compression cavity 81 is fixedly arranged at the top of the shell 2 and is sealed, an air inlet pipe 82 is fixedly arranged on the outer surface of the upper compression cavity 81, the air inlet pipe 82 is communicated with the inner cavity of the upper compression cavity 81, an exhaust pipe 83 is fixedly arranged at the central position of the top of the upper compression cavity 81, the exhaust pipe 83 is communicated with the inner cavity of the upper compression cavity 81, an upper compression spiral sheet 84 is fixedly arranged at the top of the inner cavity of the upper compression cavity 81, the upper compression spiral sheet 84 is matched with the lower compression spiral sheet 78, the upper compression spiral sheet 84 comprises a compression sheet 841, sealing rubber sleeves 842 are fixedly arranged at two sides of the compression sheet 841, cooling liquid is contained in the containing cavities of the sealing rubber sleeves 842, the sealing rubber sleeves 842 are made of soft wear-resistant rubber, an eccentric rotating device 9 is fixedly arranged at one end of an output shaft of the power machine 3, the eccentric rotating device 9 is movably sleeved with the, the bottom of the eccentric rotating shaft 91 is fixedly connected with one end of an output shaft of the power machine 3, an eccentric hole 92 is formed in the top of the eccentric rotating shaft 91, the axis of the eccentric hole 92 and the axis of the output shaft of the power machine 3 are not on the same central line, a limiting bearing 93 is fixedly sleeved inside the eccentric hole 92, a connecting shaft 94 is fixedly sleeved inside the limiting bearing 93, and the connecting shaft 94 is fixedly connected with the bottom of the limiting sleeve 71.

Wherein, the impeller 54 is fixedly sleeved on the position which is positioned inside the sealing bearing 53 and passes through the outer surface of the output shaft of the power machine 3, so that the power machine 3 can drive the lubricating oil inside the lubricating cavity 51 to generate vortex in the process of running and driving the impeller 54 to rotate, when the outer side of the vortex is contacted with the circular through hole at the bottom of the lubricating cavity 51, the lubricating oil can enter the liquid guide pipe 55 under the action of centrifugal force, the content of the lubricating oil inside the lubricating cavity 51 is reduced, so that the pressure inside the lubricating cavity 51 is reduced, the lubricating oil inside the liquid storage chamber 6 enters the lubricating cavity 51 through the liquid inlet pipe 56 for supplement, at the moment, the lubricating oil inside the liquid guide pipe 55 flows under the action of the impeller 54, and is communicated with the limiting ring groove 72 through the liquid guide pipe 55, so that the lubricating oil can flow into the limiting ring groove 72 and be contacted with and lubricate the swinging groove 73, thereby avoiding the problem that the service life is too short due to too large friction force among the swing groove 73, the swing limit rod 74 and the limit ring 75, reducing the use cost of the device, and simultaneously, since the flow direction of the lubricating oil inside the lubrication chamber 51 is flowing into the lubrication chamber 51 from the liquid inlet pipe 56, flows from the top of lubrication chamber 51 to the bottom of lubrication chamber 51 under the action of impeller 54 and flows out of drain 55, causing impeller 54 to experience a counter force directed opposite the direction of the lubricating oil flow, and this force will act on the output shaft of power machine 3 in balance with the forces generated by the compressed gas in lower compression screw 78 and upper compression screw 84, therefore, the problem that the friction force received by the limiting component is increased to accelerate the abrasion speed of the limiting component due to overlarge pressure intensity after gas compression is solved, and the use cost of the device is further reduced.

Wherein, the material of the sealing rubber sleeve 842 is soft wear-resistant rubber, so that the air pressure in the cavity between the upper compression spiral sheet 84 and the lower compression spiral sheet 78 will act on the sealing rubber sleeve 842 when rising, and the cavity of the sealing rubber sleeve 842 contains cooling liquid, thereby pushing the cooling liquid to move to both sides of the high-pressure air, so that the heights of both sides are raised, thereby filling the gap between the upper compression spiral sheet 84 and the lower compression spiral sheet 78 to achieve a sealing state, thereby avoiding the problem that the compressed gas will leak through the gap and reduce the compression efficiency due to the gap left in the compression cavity with a thread shape, improving the compression efficiency of the device, and simultaneously, the cooling liquid in the sealing rubber sleeve 842 can cool the sealing rubber sleeve 842, and simultaneously, the cooling liquid in the sealing rubber sleeve 842 can synchronously flow under the action of the compressed gas flowing to the center, therefore, the problem that the sealing is not tight due to the fact that the lower compression spiral sheet 78 and the upper compression spiral sheet 84 are in high-frequency contact and the temperature of the lower compression spiral sheet is too high and deformation occurs is avoided, and the stability of the device in operation is improved.

The using method of the invention is as follows:

in the using process, the power machine 3 drives the impeller 54 to rotate and drives the lubricating oil in the lubricating cavity 51 to generate vortex, when the outer side of the vortex is in contact with the circular through hole at the bottom of the lubricating cavity 51, the lubricating oil enters the liquid guide pipe 55 under the action of centrifugal force, the content of the lubricating oil in the lubricating cavity 51 is reduced, so that the pressure in the lubricating cavity 51 is reduced, the lubricating oil in the liquid storage chamber 6 enters the lubricating cavity 51 through the liquid inlet pipe 56 to be supplemented, the lubricating oil in the liquid guide pipe 55 flows under the action of the impeller 54, the liquid guide pipe 55 is communicated with the limiting ring-shaped groove 72, so that the lubricating oil can flow into the limiting ring-shaped groove 72 and is in contact with and lubricate the swinging groove 73, the swinging limiting rod 74 and the limiting ring 75, and the flowing direction of the lubricating oil in the lubricating cavity 51 flows into the lubricating cavity 51 from the liquid inlet pipe 56, the cooling liquid in the sealing rubber sleeve 842 cools the sealing rubber sleeve 842, and the cooling liquid in the sealing rubber sleeve 842 is enabled to synchronously flow the cooling liquid in the sealing rubber sleeve 842 under the action of the compressed gas flowing to the center under the action of the compressed gas And (4) flowing.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A scroll air compressor, comprising a base (1), characterized in that: the top of the base (1) is fixedly provided with a shell (2) at the position outside, the center of the top of the base (1) is fixedly provided with a power machine (3) at the position inside the shell (2), the inner wall of the shell (2) is fixedly sleeved with a fixed shell (4) at the position above the power machine (3), the inside of the fixed shell (4) is fixedly sleeved with a lubricating device (5), the outer surface of the shell (2) near the top is fixedly provided with a liquid storage chamber (6), the liquid storage chamber (6) is communicated with the lubricating device (5), the inner cavity of the shell (2) near the top is fixedly sleeved with a lower compression device (7), the bottom of the lower compression device (7) is connected with an output shaft of the power machine (3), the top of the shell (2) is fixedly provided with an upper compression device (8), one end of the output shaft of the power machine (3) is fixedly provided with an eccentric rotating device (9), and the eccentric rotating device (9) is movably sleeved with the lower compression device (7).

2. A scroll air compressor as claimed in claim 1, wherein: the lubricating device (5) comprises a lubricating cavity (51), the lubricating cavity (51) is filled with lubricating oil, two ends of the lubricating cavity (51) are fixedly provided with sealing covers (52), the sealing covers (52) are fixedly sleeved on the positions, close to the two ends, of the inner cavity of the fixed shell (4), one side of each sealing cover (52) is fixedly sleeved with a sealing bearing (53) at the center, the inner part of each sealing bearing (53) is fixedly sleeved with an output shaft of the power machine (3), the outer surface of the output shaft of the power machine (3) is fixedly sleeved with an impeller (54) at the position inside the corresponding sealing bearing (53), the bottom of the outer surface of the lubricating cavity (51) is provided with a circular through hole, one end of the circular through hole is fixedly provided with a liquid guide pipe (55), and one end of the liquid guide pipe (55) is fixedly connected with the lower compression device (7, the lubricating device is characterized in that a circular through hole is formed in the top of the outer surface of the lubricating cavity (51), a liquid inlet pipe (56) is fixedly installed at one end of the circular through hole, and one end of the liquid inlet pipe (56) is fixedly connected with the bottom of the liquid storage chamber (6) and communicated with the inner cavity of the liquid storage chamber (6).

3. A scroll air compressor as claimed in claim 1, wherein: the lower compression device (7) comprises a limiting sleeve (71), the bottom of the limiting sleeve (71) is fixedly connected with an eccentric rotating device (9), a limiting annular groove (72) is formed in the position, located in the middle, of the inner wall of the limiting sleeve (71), the number of swing grooves (73) and the number of swing grooves (73) are three and distributed in an annular array mode, a swing limiting rod (74) is movably mounted in the swing groove (73), a limiting ring (75) is sleeved in the internal movement of the limiting annular groove (72), sliding grooves and sliding grooves are formed in the outer surface of the limiting ring (75), the number of the sliding grooves is three and matched with the swing limiting rod (74), a transmission sleeve (76) is fixedly sleeved on the internal portion of the limiting ring (75), and a compression base (77) is fixedly mounted at the top of the transmission sleeve (76), the top of the compression base (77) is fixedly provided with a lower compression spiral sheet (78) and the lower compression spiral sheet (78) is matched with the upper compression device (8).

4. A scroll air compressor as claimed in claim 3, wherein: the bottom of the limiting sleeve (71) is provided with a circular through hole, and one end of the circular through hole is fixedly connected with the liquid guide pipe (55) and communicated with the limiting annular groove (72).

5. A scroll air compressor as claimed in claim 3, wherein: the eccentric rotating device (9) comprises an eccentric rotating shaft (91), the bottom of the eccentric rotating shaft (91) is fixedly connected with one end of an output shaft of the power machine (3), an eccentric hole (92) is formed in the top of the eccentric rotating shaft (91), a limiting bearing (93) is fixedly sleeved inside the eccentric hole (92), a connecting shaft (94) is fixedly sleeved inside the limiting bearing (93), and the connecting shaft (94) is fixedly connected with the bottom of the limiting sleeve (71).

6. A scroll air compressor as claimed in claim 4, wherein: the axial line of the eccentric hole (92) and the axial line of the output shaft of the power machine (3) are not on the same central line any more.

7. A scroll air compressor as claimed in claim 3, wherein: go up compression device (8) including compression chamber (81), go up compression chamber (81) fixed mounting and through sealed processing between at the top of shell (2), the outer fixed surface who goes up compression chamber (81) installs intake pipe (82) and the inner chamber of last compression chamber (81) is linked together, go up the central point at compression chamber (81) top and put fixed mounting have blast pipe (83) and the inner chamber of last compression chamber (81) to be linked together, the top fixed mounting of going up compression chamber (81) inner chamber has last compression flight (84) and goes up compression flight (84) and cooperate with lower compression flight (78).

8. A scroll air compressor as claimed in claim 7, wherein: go up compression flight (84) including compression piece (841), the both sides fixed mounting of compression piece (841) contains the coolant liquid in the appearance chamber of sealed rubber sleeve (842) and sealed rubber sleeve (842), the material of sealed rubber sleeve (842) is soft wear-resisting rubber.