Scroll compressor with long damping hole on scroll plate

Abstract

The present invention relates to the technical field of compressors, specifically to a scroll compressor with a long damping hole in a scroll disk, comprising a base, a shell bolted on the base, an air intake pipe arranged on the side of the shell, a power assembly arranged on the base, a compression assembly arranged in the middle of the power assembly, a fixed cylinder arranged on the side of the base, a large bearing is connected to the fixed cylinder, the large bearing is sleeved in the flange on the lower side of the eccentric disk, a gear ring is fixedly arranged on the outer side of the eccentric disk, a small gear is meshed and connected to the outer side of the gear ring, the small gear is fixedly arranged on the output shaft of the motor, and the motor is bolted to the base through a fixed ear plate; a small bearing is arranged in the eccentric disk, the upper side of the small bearing abuts against a pressure ring; the small bearing is sleeved on the outer side of the support disc, the lower side of the inner ring of the small bearing abuts against a positioning ring bolted to the lower side of the support disc; the compression assembly is bolted on the support disc. The force of the intermediate plate can be balanced, and an air film can be formed on the outer side of the seal, thereby reducing the wear of the seal and increasing the service life of the seal.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, in particular to a scroll compressor with a scroll plate having a long damping hole. Background Art

[0002] Scroll compressors have been widely used in many fields due to their compact structure, high efficiency and energy saving, smooth operation, low vibration and low noise.

[0003] The scroll compressor includes a casing, a fixed scroll, a movable scroll and an end cover. The fixed scroll and the movable scroll are both arranged in the casing. A front end cover is provided on the side of the casing close to the fixed scroll, and a rear end cover is provided on the side of the casing close to the movable scroll. The front end cover and the rear end cover cooperate to seal the movable scroll and the fixed scroll in the casing.

[0004] Among them, the scroll compressor uses the meshing movement of the orbiting scroll and the fixed scroll to compress the refrigerant to achieve refrigeration, and the compressed refrigerant is discharged from the front cover through the exhaust hole of the fixed scroll. In order to avoid the refrigerant leakage in the compressor and reduce the cooling capacity, it is usually necessary to separate the high-pressure exhaust side from the low-pressure suction side, which is generally achieved by machining a sealing groove on the substrate of the scroll and assembling a seal in the sealing groove.

[0005] However, since the seal moves with the scroll, it will cause wear and tear, and its service life is relatively short, and it needs regular maintenance and replacement of the seal. At the same time, when the scroll is working, it will divide into multiple sealed cavities, and the directions of the force applied by the sealed cavities to the same scroll are roughly the same, causing the scroll to be unevenly stressed and slightly tilted, resulting in a slight overturning deformation, causing the wear parts of the seal to be concentrated, thereby causing excessive wear and shortening the service life.

[0006] Therefore, a scroll compressor having a scroll plate with a long damping hole is needed to solve the above technical problems. Summary of the invention

[0007] The purpose of the present invention is to solve the above problems and to provide a scroll compressor having a scroll plate with a long damping hole, which can reduce the uneven force on the scroll plate, prevent the wear of the seal, and increase the service life of the seal.

[0008] A scroll compressor with a scroll plate having a long damping hole is provided, comprising a base, a housing is connected to the base with bolts, an air inlet pipe is arranged on the side of the housing, a power assembly is arranged on the base, and a compression assembly is arranged in the middle of the power assembly.

[0009] A fixing cylinder is arranged on the upper side of the base, a large bearing is sleeved on the outer surface of the fixing cylinder, the large bearing is sleeved in the flange on the lower side of the eccentric disk, a gear ring is fixedly arranged on the outer side of the eccentric disk, a small gear is meshed and connected on the outer side of the gear ring, the small gear is fixedly arranged on the output shaft of the motor, and the motor is connected to the base through fixing ear plate bolts;

[0010] A small bearing is arranged in the eccentric disk, the upper side of the small bearing abuts against a pressure ring, and the pressure ring is bolted to the upper side of the eccentric disk;

[0011] The small bearing is sleeved on the outer side of the supporting disc, and the lower side of the inner ring of the small bearing abuts against the positioning ring which is bolted to the lower side of the supporting disc; the compression assembly is bolted to the supporting disc.

[0012] Furthermore, the eccentric disk comprises an outer circle and an inner circle, the outer circle and the inner circle are eccentrically arranged, a small bearing is sleeved in the inner circle, and the outer circle and a large bearing sleeved in the flange are coaxially arranged.

[0013] Furthermore, a guide assembly is arranged at the lower side of the support disc, the guide assembly comprises a guide disc, two symmetrically arranged guide blocks are bolted to the lower side of the guide disc, the two guide blocks are slidably connected in the slide groove at the upper end of the limit seat, the length directions of the two slide grooves are collinearly arranged, and the limit seat is bolted to the base;

[0014] The guide plate is symmetrically provided with two guide grooves, the two guide grooves are symmetrically and collinearly arranged, and the straight line where the two guide grooves are located is perpendicular to the straight line where the two guide blocks are located;

[0015] A limit sliding column is slidably arranged in the guide groove, and the limit sliding column is bolted to the lower side surface of the supporting disc.

[0016] Further, the compression assembly includes an intermediate plate, the intermediate plate is bolted to the upper side of the support disc, an upper orbiting scroll is fixedly arranged on the upper side of the intermediate plate, an upper fixed scroll is inserted in the upper orbiting scroll, and the upper fixed scroll is fixedly arranged in the upper compression housing;

[0017] The upper compression shell is fixedly connected to the gas storage tank through the upper connecting arc plate, and the gas storage tank is fixedly connected to the top inner side of the shell;

[0018] A lower orbiting scroll is fixedly arranged at the lower side of the middle plate, the lower orbiting scroll is coaxial with the upper orbiting scroll and is axially symmetrical in vertical projection, a lower fixed scroll is inserted in the lower orbiting scroll, the lower fixed scroll is fixedly arranged in the lower compression housing, and the lower compression housing is connected to the base through the lower connecting arc plate fixing bolts;

[0019] Furthermore, an upper air delivery port is provided at the center of the upper compression shell, the upper air delivery port is connected to the air storage tank through an upper air delivery pipe, and an upper air inlet is provided on the side of the upper compression shell;

[0020] A lower air delivery port is arranged at the center of the lower compression shell, the lower air delivery port is communicated with a lower air delivery pipe, the lower air delivery pipe is communicated with an air storage tank, and a lower air inlet is arranged on a side of the lower compression shell.

[0021] Further, the ends of the upper fixed scroll, the upper orbiting scroll, the lower fixed scroll and the lower orbiting scroll are all provided with grooves for accommodating the seal, and a plurality of springs are provided between the seal and the groove;

[0022] The sealing member is in an inverted U-shape, including limiting convex strips arranged on two sides, and a plurality of waist-shaped air grooves are evenly distributed on the side of the sealing member away from the groove.

[0023] Furthermore, the middle plate has a connecting port at the center of the upper and lower sides, the connecting port is threadedly connected to the one-way component, the upper and lower sides of the middle plate are provided with a lower fine air inlet, the left and right sides of the middle plate are provided with a fine through hole, and the fine through hole, the lower fine air inlet and the connecting port are all in a connected state;

[0024] Upper thin air inlets are arranged in the middle of the upper compression shell and the middle of the lower compression shell; and two thin through holes are respectively connected with the two upper thin air inlets through upper thin tubes.

[0025] Furthermore, the one-way component includes a cylinder, a threaded portion is arranged on the outer side of the cylinder, an upper circular opening passing through the upper end of the cylinder is arranged on the upper end of the cylinder, the lower end of the upper circular opening abuts against a sealing ball, the lower side of the sealing ball abuts against a support plate slidably connected in the cylinder, the support plate has a plurality of through holes evenly distributed around the circumference, the lower side of the support plate abuts against a spring, the lower end of the spring abuts against another support plate, the lower side of the support plate abuts against another sealing ball, the sealing ball abuts against the end cover, and the end cover is threadedly connected to the lower end of the cylinder; the end cover is provided with a lower circular opening passing through the end cover, and the upper end of the lower circular opening abuts against the sealing ball.

[0026] A plurality of air passage grooves are evenly distributed on the side wall of the cylinder in the circumferential direction, and the air passage grooves are connected with the fine through hole, the lower fine air inlet and the connecting port.

[0027] Furthermore, an air guide groove 1 is provided at one end of the upper orbiting scroll away from the sealing member, the air guide groove 1 extends along the upper orbiting scroll, and a plurality of vertical air passages 1 are provided along the length direction of the air guide groove 1, and the other end of the vertical air passage 1 is connected to the groove where the sealing member is located;

[0028] The air guide groove 1 is communicated with the lower thin air inlet on the middle plate.

[0029] Furthermore, an upper static scroll disk is fixedly arranged in the upper compression shell, and an air guide groove 2 is arranged along the length direction of the upper static scroll disk at one end of the upper static scroll disk in contact with the upper compression shell. The air guide groove 2 is connected to the upper fine air inlet of the upper compression shell, and the air guide groove 2 is connected to a plurality of vertically arranged vertical air ducts 2, and the other end of the vertical air duct 2 is connected to the groove where the seal is located.

[0030] The beneficial effects of the present invention are as follows: by axially symmetrically arranging the upper orbiting scroll and the lower orbiting scroll on the middle plate, the horizontal gas pressure on the middle plate can be balanced, and the middle plate only bears the centrifugal force of the middle plate, the upper orbiting scroll and the lower orbiting scroll, thereby reducing the load on the middle plate and the bearing. At the same time, the forces on the upper and lower sides of the middle plate are also in a balanced state, thereby preventing the middle plate from tilting and preventing the seal from tilting during operation and causing increased wear.

[0031] Secondly, the gas can be introduced into the groove where the seal is located, and the gas flows out from the waist-shaped gas groove of the seal to form an air film on the outside of the seal, thereby reducing the wear of the seal and increasing the service life of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0033] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention;

[0035] Figure 3 This is a schematic diagram of the partial explosion structure of the base of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the power assembly of the present invention;

[0037] Figure 5 This is a schematic diagram of the eccentric disk structure of the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the compression assembly of the present invention;

[0039] Figure 7 This is a bottom view of the structure of the compression assembly of the present invention;

[0040] Figure 8 This is a schematic diagram of the structure of the guide assembly of the present invention;

[0041] Fig. 9 This is a schematic diagram of the explosion structure of the compression assembly of the present invention;

[0042] Fig.10 It is a schematic diagram of the structure of the upper stationary scroll of the present invention;

[0043] Fig.11 This is a schematic diagram of the seal structure of the present invention;

[0044] Fig.12 This is a schematic diagram of the explosion structure at the upper static vortex disk of the present invention;

[0045] Fig.13 It is a schematic diagram of the cross-sectional structure of the upper movable scroll of the present invention;

[0046] Fig.14 This is a schematic diagram of the explosion structure at the middle plate of the present invention;

[0047] Fig.15 This is a schematic diagram of the exploded structure of the one-way component of the present invention;

[0048] Fig.16 This is another exploded structural schematic diagram of the one-way component of the present invention.

[0049] Reference numerals:

[0050] 1 housing, 11 air inlet pipe, 12 air outlet pipe, 13 base, 131 fixing ear plate, 132 fixing cylinder, 14 air storage tank;

[0051] 2 power assembly, 21 motor, 22 pinion, 23 gear ring, 24 eccentric disk, 241 small bearing, 242 flange, 243 pressure ring, 244 outer circle, 245 inner circle, 25 support disc, 251 positioning ring, 26 large bearing;

[0052] 3 compression assembly, 31 middle plate, 311 fine through hole, 312 lower fine air inlet, 313 communication port;

[0053] 32 upper compression shell, 321 upper connecting arc plate, 322 upper air delivery pipe, 323 upper fine tube, 324 upper air delivery port, 325 upper movable scroll plate, 3251 air guide groove 1, 3252 vertical air passage 1, 326 upper static scroll plate, 3261 air guide groove 2, 3262 vertical air passage 2, 327 upper air inlet, 328 upper fine air inlet;

[0054] 33 is a compression housing, 331 is a connecting arc plate, 332 is an air delivery pipe, 333 is an air delivery port, 334 is an air inlet, 335 is a capillary tube, 336 is a fixed scroll disk, and 337 is a movable scroll disk;

[0055] 4 guide assembly, 41 guide plate, 42 guide block, 43 guide groove, 44 limit slide column, 45 limit seat, 451 slide groove;

[0056] 5 sealing member, 51 waist-shaped air groove, 52 limiting convex strip;

[0057] 6 one-way component, 61 cylinder, 611 air groove, 612 upper round opening, 613 hexagonal prism, 614 threaded portion, 62 spring, 63 support plate, 631 through hole, 64 sealing ball, 65 end cover, 651 lower round opening. DETAILED DESCRIPTION

[0058] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-Figure 16 As shown, the scroll compressor with a long damping hole on the scroll plate includes a base 13, the base 13 is bolted to the shell 1, and an air inlet pipe 11 is arranged on the side of the shell 1. The gas enters the shell 1 through the air inlet pipe 11 and is then compressed.

[0059] A power assembly 2 is arranged on the base 13, and a compression assembly 3 is arranged in the middle of the power assembly 2. The power assembly 2 drives the compression assembly 3 to work.

[0060] See also Figure 3-Figure 4 A fixing cylinder 132 is arranged on the upper side of the base 13, and a large bearing 26 is connected to the outer surface of the fixing cylinder 132. The large bearing 26 is sleeved in the flange 242 on the lower side of the eccentric disk 24. The large bearing 26 realizes the relative rotation of the eccentric disk 24 and the base 13, so that the eccentric disk 24 is rotatably connected to the base 13, and a gear ring 23 is fixedly arranged on the outer side of the eccentric disk 24. The gear ring 23 is externally meshed and connected with a pinion 22. The pinion 22 is fixedly arranged on the output shaft of the motor 21. The motor 21 is bolted to the base 13 through the fixing ear plate 131. The motor 21 drives the gear ring 23 and the eccentric disk 24 to rotate through the pinion 22, so as to realize the rotation of the eccentric disk 24 relative to the base 13;

[0061] A small bearing 241 is arranged in the eccentric disk 24 . The upper side of the small bearing 241 abuts against a pressure ring 243 . The pressure ring 243 is bolted to the upper side of the eccentric disk 24 . The relative positioning of the small bearing 241 and the eccentric disk 24 is achieved through the pressure ring 243 .

[0062] The small bearing 241 is sleeved on the outside of the support disc 25 , and the lower side of the inner ring of the small bearing 241 abuts against a positioning ring 251 bolted to the lower side of the support disc 25 , and the relative axial positioning of the small bearing 241 and the support disc 25 is achieved through the positioning ring 251 .

[0063] The support disc 25 is bolted to the compression assembly 3, and the compression of the gas is achieved through the compression assembly 3.

[0064] For further information, see Figure 5 The eccentric disk 24 includes an outer circle 244 and an inner circle 245. The outer circle 244 and the inner circle 245 are eccentrically arranged. A small bearing 241 is sleeved in the inner circle 245. The outer circle 244 and a large bearing 26 sleeved in the flange 242 are coaxially arranged. When the eccentric disk 24 is driven to rotate by the gear ring 23, the eccentric disk 24 can drive the supporting disk 25 in the small bearing 241 to move its position.

[0065] For further information, see Figure 7 A guide assembly 4 is provided at the lower side of the support disc 25, and the guide assembly 4 includes a guide disc 41, and two symmetrically arranged guide blocks 42 are bolted to the lower side of the guide disc 41, and the two guide blocks 42 are slidably connected in a slide groove 451 at the upper end of the limit seat 45, and the length directions of the two slide grooves 451 are collinearly arranged, and the limit seat 45 is bolted to the base 13;

[0066] The guide plate 41 is symmetrically provided with two guide grooves 43, the two guide grooves 43 are symmetrically and collinearly arranged, and the straight line where the two guide grooves 43 are located is perpendicular to the straight line where the two guide blocks 42 are located;

[0067] A limit slide 44 is slidably set in the guide groove 43, and the limit slide 44 is bolted to the lower side of the support disc 25. Through the setting of the guide assembly 4, the limit slide 44 and the support disc 25 can move along the direction of the slide groove 451 and the direction of the guide groove 43 at the same time, so that the support disc 25 can only revolve around the center of the base 13 but cannot rotate.

[0068] For further information, see Figure 6-Figure 10 The compression assembly 3 includes an intermediate plate 31, which is bolted to the upper side of the support disc 25. The intermediate plate 31 revolves with the support disc 25. An upper orbiting scroll 325 is fixedly arranged on the upper side of the intermediate plate 31. An upper fixed scroll 326 is inserted in the upper orbiting scroll 325. The upper fixed scroll 326 is fixedly arranged in the upper compression housing 32.

[0069] The upper compression shell 32 is fixedly connected to the gas storage tank 14 through the upper connecting arc plate 321, and the gas storage tank 14 is fixedly connected to the inner side of the top of the housing 1;

[0070] A lower orbiting scroll 337 is fixedly disposed at the lower side of the middle plate 31. The lower orbiting scroll 337 is coaxial with the upper orbiting scroll 325 and is axially symmetrical in vertical projection. A lower fixed scroll 336 is inserted into the lower orbiting scroll 337. The lower fixed scroll 336 is fixedly disposed in the lower compression housing 33. The lower compression housing 33 is connected to the base 13 by fixing bolts through the lower connecting arc plate 331.

[0071] The support disc 25 drives the middle plate 31, the upper orbiting scroll 325 and the lower orbiting scroll 337 to revolve, the upper orbiting scroll 325 moves relative to the upper static scroll 326 to achieve gas compression, and the lower orbiting scroll 337 moves relative to the lower static scroll 336 to achieve gas compression. Since the middle plate 31 is subjected to pressure on both the upper and lower sides at the same time, the pressure on the middle plate 31 in the vertical direction is balanced, thereby maintaining a stable position, which can improve the sealing effect and increase the service life of the bearings and seals; at the same time, the upper orbiting scroll 325 and the lower orbiting scroll 337 on the upper and lower sides of the middle plate 31 are oppositely arranged, so that the gas pressures received by the upper orbiting scroll 325 and the lower orbiting scroll 337 during operation offset each other, which can prevent the middle plate 31 from being subjected to unbalanced force and causing a slight tilt, so that when the middle plate 31 is working, it is only subjected to the centrifugal force during revolution in the horizontal plane, thereby reducing the load borne by the bearing and increasing the service life of the bearing.

[0072] Furthermore, an upper gas delivery port 324 is provided at the center of the upper compression shell 32, and the upper gas delivery port 324 is connected to the gas storage tank 14 through an upper gas delivery pipe 322. A one-way valve is provided in the upper gas delivery pipe 322 to prevent the gas in the gas storage tank 14 from flowing back into the upper gas delivery pipe 322. An upper air inlet 327 is provided on the side of the upper compression shell 32. The gas enters through the upper air inlet 327 and is compressed by the upper fixed scroll 326 and the upper orbiting scroll 325, and then enters the gas storage tank 14 through the upper gas delivery pipe 322.

[0073] A lower air delivery port 333 is arranged at the center of the lower compression shell 33, the lower air delivery port 333 is connected with a lower air delivery pipe 332, a one-way valve is arranged in the lower air delivery pipe 332, the lower air delivery pipe 332 is connected with the air storage tank 14, a lower air inlet 334 is arranged on the side of the lower compression shell 33, the gas enters from the lower air inlet 334, after being compressed by the lower movable scroll 337 and the lower static scroll 336, the gas enters the air storage tank 14 through the lower air delivery pipe 332, thereby realizing the compression and storage of the gas.

[0074] For further information, see Figure 11-13 The ends of the upper fixed scroll 326, the upper orbiting scroll 325, the lower fixed scroll 336 and the lower orbiting scroll 337 are all provided with grooves for accommodating the seal 5, and a plurality of springs are provided between the seal 5 and the grooves so that the seal 5 can be kept away from the grooves, thereby maintaining a sealed state;

[0075] See also Fig.11 The seal 5 is an inverted U-shape, including limiting convex strips 52 arranged on both sides. The limiting convex strips 52 are clamped on the side of the groove to prevent the seal 5 from being separated from the groove. A plurality of waist-shaped air grooves 51 are evenly distributed on the side of the seal 5 away from the groove. The waist-shaped air grooves 51 connect the groove and the external gas. When high-pressure gas is introduced into the groove, the high-pressure gas can diffuse outward through the waist-shaped air grooves 51, thereby forming an air film on the surface of the seal 5, reducing the wear of the seal 5 during operation and increasing the service life of the seal 5.

[0076] For further information, see Fig.14 The middle plate 31 has a connecting port 313 at the center of the upper and lower sides thereof, the connecting port 313 is internally threadedly connected to the one-way component 6, the upper and lower sides thereof are provided with a lower fine air inlet 312, the left and right sides thereof are provided with a fine through hole 311, and the fine through hole 311, the lower fine air inlet 312 and the connecting port 313 are all in a connected state;

[0077] Upper fine air inlets 328 are provided in the middle of the upper compression shell 32 and the middle of the lower compression shell 33. The two upper fine air inlets 328 are respectively connected to the interior of the upper fixed scroll plate 326 and the lower fixed scroll plate 336; the two fine through holes 311 are respectively connected to the two upper fine air inlets 328 through the upper fine tube 323;

[0078] High-pressure gas can enter the middle plate 31 through the connecting port 313 , enter the upper orbiting scroll 325 and the lower orbiting scroll 337 through the two lower fine air inlets 312 , and enter the upper fixed scroll 326 and the lower fixed scroll 336 through the two fine through holes 311 .

[0079] For further information, see Fig.15 and Fig.16 The one-way component 6 includes a cylinder 61, a threaded portion 614 is arranged on the outer side of the cylinder 61, and the one-way component 6 is fixed in the communication port 313 of the middle plate 31 through the threaded portion 614. The upper end of the cylinder 61 is provided with an upper circular port 612 penetrating the upper end of the cylinder 61, and the upper circular port 612 communicates with the inside and outside of the cylinder 61. The lower end of the upper circular port 612 abuts against the sealing ball 64, and the sealing ball 64 is used to seal the upper circular port 612, so that the gas can pass through the upper circular port 612 in one direction. The lower side of the sealing ball 64 abuts against the upper circular port 612. The support plate 63 is connected to the cylinder 61 in a sliding manner, and a plurality of through holes 631 are evenly distributed around the support plate 63. The lower side of the support plate 63 abuts against the spring 62, and the lower end of the spring 62 abuts against another support plate 63. The lower side of the support plate 63 abuts against another sealing ball 64, and the sealing ball 64 abuts against the end cover 65, and the end cover 65 is threadedly connected to the lower end of the cylinder 61; the end cover 65 is provided with a lower circular opening 651 which passes through the end cover 65, and the upper end of the lower circular opening 651 abuts against the sealing ball 64.

[0080] By setting the spring 62 , the two sealing balls 64 can move independently to seal the gas, so that the gas can only enter the one-way component 6 .

[0081] Furthermore, a plurality of air passage grooves 611 are evenly distributed in the circumferential direction on the side wall of the cylinder 61, and the air passage grooves 611 are connected with the fine through hole 311, the lower fine air inlet 312 and the communication port 313;

[0082] After the gas enters the cylinder 61 through the upper circular port 612 and the lower circular port 651, it enters the fine through hole 311, the lower fine air inlet 312 and the connecting port 313 through the air groove 611, and is then transported to the upper static scroll plate 326, the upper movable scroll plate 325, the lower movable scroll plate 337 and the lower static scroll plate 336, and then is discharged from the waist-shaped air groove 51 of the seal 5, thereby protecting the seal 5 and preventing the seal 5 from wear.

[0083] For further information, see Fig.13 An air guide groove 3251 is provided at one end of the upper orbiting scroll 325 away from the sealing member 5. The air guide groove 3251 extends along the upper orbiting scroll 325. A plurality of vertical air passages 3252 are provided along the length direction of the air guide groove 3251. The other end of the vertical air passage 3252 is connected to the groove where the sealing member 5 is located.

[0084] The air guide groove 3251 is connected to the lower thin air inlet 312 on the middle plate 31; after the high-pressure gas enters the air guide groove 3251 through the lower thin air inlet 312, it enters the groove where the seal 5 is located through the vertical air channel 3252, and then is discharged through the waist-shaped air groove 51 of the seal 5, thereby protecting the seal 5.

[0085] The lower orbiting scroll 337 and the upper orbiting scroll 325 have the same structure.

[0086] For further information, see Fig.12 An upper static scroll plate 326 is fixedly arranged in the upper compression shell 32, and an air guide groove 3261 is arranged at one end of the upper static scroll plate 326 that contacts the upper compression shell 32 along the length direction of the upper static scroll plate 326. The air guide groove 3261 is connected to the upper fine air inlet 328 of the upper compression shell 32, and the air guide groove 3261 is connected to a plurality of vertically arranged vertical air ducts 3262, and the other end of the vertical air duct 3262 is connected to the groove where the sealing member 5 is located.

[0087] The high-pressure gas can be transported to the groove of the upper static vortex disk 326 through the second air guide groove 3261, and the gas flows out from the waist-shaped air groove 51 of the seal 5 to form an air film on the surface of the seal 5, thereby protecting the seal 5 and reducing the wear of the seal 5.

[0088] The lower stationary scroll 336 has the same structure as the upper stationary scroll 326 . The lower stationary scroll 336 is connected to the fine through hole 311 of the middle plate 31 through the lower fine tube 335 , so that the gas can enter the lower stationary scroll 336 easily.

[0089] Working principle: During operation, the motor 21 drives the pinion 22, the ring gear 23 and the eccentric disc 24 to rotate on the fixed cylinder 132. Since the eccentric disc 24 pushes the supporting disc 25 to revolve, due to the limitation of the guide assembly 4, the supporting disc 25 can only revolve but not rotate.

[0090] The support disc 25 drives the middle plate 31 to rotate, and the middle plate 31 drives the upper orbiting scroll 325 and the lower orbiting scroll 337 to revolve, and cooperate with the upper stationary scroll 326 and the lower stationary scroll 336 to achieve gas compression. A large part of the compressed gas is transported to the gas storage tank 14 through the upper gas pipe 322 and the lower gas pipe 332 to achieve gas compression.

[0091] Since the upper orbiting scroll 325 and the lower orbiting scroll 337 on the middle plate 31 are axially symmetrically arranged, the horizontal gas pressure on the middle plate 31 can be balanced. The middle plate 31 only bears the centrifugal force of the middle plate 31, the upper orbiting scroll 325 and the lower orbiting scroll 337, thereby reducing the load on the middle plate 31 and the bearing. At the same time, the forces on the upper and lower sides of the middle plate 31 are also in a balanced state, thereby preventing the middle plate 31 from tilting, preventing the seal 5 from tilting during operation, and preventing eccentric wear of the seal 5, which would cause local wear to intensify and cause the seal 5 to be damaged and fail.

[0092] A portion of the high-pressure gas enters the middle plate 31 through the one-way component 6, and a portion enters the upper movable scroll 325 and the lower movable scroll 337 through the two lower fine air inlets 312, and enters the groove where the seal 5 is located through the air guide groove 3251 and the vertical air channel 3252, and is discharged from the waist-shaped air groove 51 of the seal 5, forming an air film outside the seal 5 to protect the seal 5, reduce the wear of the seal 5, and increase the service life of the seal 5.

[0093] Since the air guide groove 3251 and the vertical air channel 3252 are both tiny micro air channels, they have a damping effect on the gas, thereby being able to control the flow of the gas and allow a small portion of the compressed gas to be discharged from the waist-shaped air groove 51 of the seal 5, which has little effect on the exhaust volume of the compressor.

[0094] A portion of the high-pressure gas in the middle plate 31 is introduced into the lower static scroll 336 through the lower capillary 335, and a portion is introduced into the upper static scroll 326 through the upper capillary 323, thereby protecting the seals 5 in the lower static scroll 336 and the upper static scroll 326.

[0095] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A scroll compressor having a scroll plate with a long damping hole, comprising a base (13), characterized in that: The base (13) is bolted to the housing (1), an air intake pipe (11) is arranged on the side of the housing (1), a power assembly (2) is arranged on the base (13), and a compression assembly (3) is arranged in the middle of the power assembly (2). A fixing cylinder (132) is disposed on the upper side of the base (13), the outer surface of the fixing cylinder (132) is connected to a large bearing (26), the large bearing (26) is connected to a flange (242) on the lower side of the eccentric disk (24), a gear ring (23) is fixedly disposed on the outer side of the eccentric disk (24), the outer side of the gear ring (23) is meshedly connected to a pinion (22), the pinion (22) is fixedly disposed on the output shaft of the motor (21), and the motor (21) is bolted to the base (13) via a fixing ear plate (131); A small bearing (241) is arranged inside the eccentric disk (24), the upper side of the small bearing (241) abuts against a pressure ring (243), and the pressure ring (243) is bolted to the upper side of the eccentric disk (24); The small bearing (241) is sleeved on the outside of the support disc (25), and the lower side of the inner ring of the small bearing (241) abuts against a positioning ring (251) bolted to the lower side of the support disc (25); the support disc (25) is bolted to the compression assembly (3); the ends of the upper fixed scroll (326), the upper movable scroll (325), the lower fixed scroll (336), and the lower movable scroll (337) are all provided with grooves for accommodating a sealing member (5), and a plurality of springs are provided between the sealing member (5) and the grooves; The sealing member (5) is in an inverted U-shape and comprises limiting convex strips (52) arranged on two sides, the limiting convex strips (52) are clamped on the side of the groove, and a plurality of waist-shaped air grooves (51) are evenly distributed on the side of the sealing member (5) away from the groove; An air guide groove 1 (3251) is provided at one end of the upper orbiting scroll (325) away from the sealing member (5); the air guide groove 1 (3251) extends along the upper orbiting scroll (325); a plurality of vertical air passages 1 (3252) are provided along the length direction of the air guide groove 1 (3251); the other end of the vertical air passage 1 (3252) is connected to a groove where the sealing member (5) is located; An upper fixed scroll disk (326) is fixedly disposed in the upper compression casing (32), and an air guide groove 2 (3261) is disposed along the length direction of the upper fixed scroll disk (326) at one end of the upper fixed scroll disk (326) that contacts the upper compression casing (32); When high-pressure gas is introduced into the groove, the high-pressure gas can diffuse outward through the waist-shaped gas groove (51), thereby forming an air film on the surface of the sealing element (5), thereby reducing the wear of the sealing element (5) during operation.

2. A scroll compressor with a scroll plate having a long damping hole according to claim 1, characterized in that: The eccentric disk (24) comprises an outer circle (244) and an inner circle (245). The outer circle (244) and the inner circle (245) are eccentrically arranged. A small bearing (241) is sleeved in the inner circle (245). The outer circle (244) and a large bearing (26) sleeved in the flange (242) are coaxially arranged.

3. A scroll compressor with a scroll plate having a long damping hole according to claim 2, characterized in that: A guide assembly (4) is arranged at the lower side of the support disc (25), the guide assembly (4) comprising a guide disc (41), the lower side of the guide disc (41) being bolted to two symmetrically arranged guide blocks (42), the two guide blocks (42) being slidably connected in a slide groove (451) at the upper end of a limit seat (45), the length directions of the two slide grooves (451) being arranged collinearly, and the limit seat (45) being bolted to the base (13); The guide plate (41) is symmetrically provided with two guide grooves (43), the two guide grooves (43) are symmetrically and collinearly arranged, and the straight line where the two guide grooves (43) are located is perpendicular to the straight line where the two guide blocks (42) are located; A limit slide post (44) is slidably arranged in the guide groove (43), and the limit slide post (44) is bolted to the lower side of the supporting disc (25).

4. A scroll compressor with a scroll plate having a long damping hole according to claim 3, characterized in that: The compression assembly (3) comprises an intermediate plate (31), the intermediate plate (31) being bolted to the upper side of the supporting disc (25), an upper orbiting scroll (325) being fixedly arranged on the upper side of the intermediate plate (31), an upper stationary scroll (326) being inserted into the upper orbiting scroll (325), and the upper stationary scroll (326) being fixedly arranged in the upper compression casing (32); The upper compression shell (32) is fixedly connected to the gas storage tank (14) via an upper connecting arc plate (321), and the gas storage tank (14) is fixedly connected to the inner side of the top of the outer shell (1); A lower orbiting scroll (337) is fixedly disposed on the lower side of the intermediate plate (31); the lower orbiting scroll (337) and the upper orbiting scroll (325) are coaxial and axially symmetrical in vertical projection; a lower stationary scroll (336) is inserted into the lower orbiting scroll (337); the lower stationary scroll (336) is fixedly disposed in the lower compression casing (33); and the lower compression casing (33) is connected to the base (13) via a lower connecting arc plate (331) fixing bolt.

5. A scroll compressor with a scroll plate having a long damping hole according to claim 4, characterized in that: An upper gas delivery port (324) is provided at the center of the upper compression shell (32), the upper gas delivery port (324) is connected to the gas storage tank (14) through an upper gas delivery pipe (322), and an upper gas inlet (327) is provided on the side of the upper compression shell (32); A lower gas delivery port (333) is provided at the center of the lower compression shell (33), the lower gas delivery port (333) is connected to a lower gas delivery pipe (332), the lower gas delivery pipe (332) is connected to the gas storage tank (14), and a lower gas inlet (334) is provided on the side of the lower compression shell (33).

6. A scroll compressor with a scroll plate having a long damping hole according to claim 5, characterized in that: A communicating opening (313) is provided at the center of the upper and lower side surfaces of the middle plate (31), the communicating opening (313) is internally threadedly connected to the one-way component (6), the upper and lower side surfaces of the middle plate (31) are provided with a lower fine air inlet (312), the left and right sides of the middle plate (31) are provided with a fine through hole (311), and the fine through hole (311), the lower fine air inlet (312) and the communicating opening (313) are all in a communicating state; An upper thin air inlet (328) is provided in the middle of the upper compression shell (32) and the middle of the lower compression shell (33); the two thin through holes (311) are respectively connected to the two upper thin air inlets (328) through the upper thin tube (323).

7. A scroll compressor with a scroll plate having a long damping hole according to claim 6, characterized in that: The one-way component (6) comprises a cylinder (61), the outer side of the cylinder (61) is provided with a threaded portion (614), the upper end of the cylinder (61) is provided with an upper circular opening (612) penetrating the upper end of the cylinder (61), the lower end of the upper circular opening (612) abuts against a sealing ball (64), the lower side of the sealing ball (64) abuts against a support plate (63) slidably connected in the cylinder (61), the support plate (63) has a plurality of through holes (631) uniformly distributed in the circumferential direction, and the support plate (63) The lower side of the support plate (63) abuts against the spring (62), the lower end of the spring (62) abuts against another support plate (63), the lower side of the support plate (63) abuts against another sealing ball (64), the sealing ball (64) abuts against the end cover (65), and the end cover (65) is threadedly connected to the lower end of the cylinder (61); the end cover (65) is provided with a lower circular opening (651) passing through the end cover (65), and the upper end of the lower circular opening (651) abuts against the sealing ball (64).

8. A scroll compressor with a scroll plate having a long damping hole according to claim 7, characterized in that: A plurality of air passage grooves (611) are evenly distributed in the circumferential direction of the side wall of the cylinder (61), and the air passage grooves (611) are connected to the fine through holes (311), the lower fine air inlet (312) and the communication port (313).

9. A scroll compressor with a scroll plate having a long damping hole according to claim 8, characterized in that: The first air guide groove (3251) is in communication with the lower thin air inlet (312) on the middle plate (31).

10. A scroll compressor with a scroll plate having a long damping hole according to claim 9, characterized in that: The second air guide groove (3261) is connected to the upper fine air inlet (328) of the upper compression shell (32), and the second air guide groove (3261) is connected to a plurality of vertically arranged second vertical air channels (3262), and the other end of the second vertical air channel (3262) is connected to the groove where the sealing member (5) is located.

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