CN110173428B - Sealing mechanism for vortex compressor - Google Patents
Sealing mechanism for vortex compressor Download PDFInfo
- Publication number
- CN110173428B CN110173428B CN201910352524.XA CN201910352524A CN110173428B CN 110173428 B CN110173428 B CN 110173428B CN 201910352524 A CN201910352524 A CN 201910352524A CN 110173428 B CN110173428 B CN 110173428B
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- CN
- China
- Prior art keywords
- sealing ring
- pressure cavity
- fixing plate
- sealing
- guide sleeve
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 78
- 230000007246 mechanism Effects 0.000 title claims abstract description 11
- 230000030279 gene silencing Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000003584 silencer Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a sealing mechanism for a scroll compressor, which comprises a shell, a top cover, a bottom cover, a motor, a main bearing, a movable scroll, a fixed scroll and a sealing assembly. The upper fixing plate, the middle plate, the lower fixing plate, the lower inner sealing ring, the lower outer sealing ring, the upper inner sealing ring and the process sealing ring of the sealing assembly, and the central exhaust hole of the silencing cover is vertically connected with the guide sleeve. The upper inner sealing ring is attached to the outer circle of the guide sleeve, separates the high-pressure cavity from the low-pressure cavity and forms a seal. The lower inner sealing ring is attached to the inner side wall of the annular groove at the upper end of the fixed scroll, separates the medium-pressure cavity from the high-pressure cavity and forms a seal. The lower outer sealing ring is attached to the outer side wall of the annular groove at the upper end of the fixed scroll, separates the medium-pressure cavity from the low-pressure cavity and forms a seal. The invention solves the problem of poor sealing of the original sealing component and improves the working efficiency of the vortex compressor.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a sealing mechanism for a scroll compressor.
Background
The scroll compressor has the advantages of small volume, high energy efficiency and the like, and is widely applied to the fields of gas compression, freezing, refrigerating and the like. The compression part of the scroll compressor consists of an movable scroll and a fixed scroll, and the application of the axial flexible sealing technology improves the end face seal of the involute scroll on the compression part. When the scroll compressor works, the movable scroll and the fixed scroll move relatively, air is continuously extruded towards the center of the scroll, so that the air pressure intensity closer to the center is increased, then when the pressure intensity is maximum, the tail end of the scroll forms dislocation at one moment to generate a gap, and the air is discharged from the gap through the center holes of the exhaust valve and the silencing cover above to form high-pressure air flow. However, the seal between the fixed scroll of the existing scroll compressor and the silencing cover above the fixed scroll is a rigid plane contact seal, and the plane contact seal is unstable, and the phenomenon of air leakage occurs when the plane contact seal even seriously affects the normal operation of the scroll compressor.
Disclosure of Invention
The invention mainly aims at solving the problem of poor sealing of an original sealing assembly and provides a sealing mechanism for a scroll compressor.
A sealing mechanism for a scroll compressor comprises a shell 1, a top cover 2, a bottom cover 3, a motor 4, a main bearing 5, a movable scroll 6, a fixed scroll 7 and a sealing assembly 8. The casing 1 is a vertically arranged round tube, the upper end of the casing 1 is connected with the top cover 2, the lower end of the casing 1 is connected with the bottom cover 3, the motor 4 is installed at a position in the middle of the inside of the casing 1 and is fixedly connected with the casing 1 through the main bearing 5 and the outer circle of a motor stator, the rotor of the motor 4 is installed on the crankshaft 41, the movable scroll 6 is installed at the upper end of the crankshaft 41, the periphery of the fixed scroll 7 is fixedly connected on the main bearing 5 and is matched with the movable scroll 6, and the silencing cover 21 is arranged at the lower side of the top cover 2.
The motor 4, the main bearing 5 and the movable scroll 6 are all positioned in a low-pressure cavity 12 communicated with the air suction port 11, an annular groove is formed in the upper end of the fixed scroll 7, a through hole 71 communicated with a compression cavity below is formed in the annular groove, an exhaust valve 72 is arranged in the center of the upper end of the fixed scroll 7, the exhaust valve 72 is communicated with the compression cavity below the fixed scroll 7 and a high-pressure cavity 25 communicated with the air outlet 24 below the top cover 2, the sealing assembly 8 is arranged between the fixed scroll 7 and the silencing cover 21, and the lower end of the sealing assembly 8 and the annular groove form a medium-pressure cavity 73.
The sealing assembly 8 comprises an upper fixing plate 81, a middle plate 82, a lower fixing plate 83, a lower inner sealing ring 84, a lower outer sealing ring 85 and an upper inner sealing ring 86 which are made of Teflon composite materials. The upper fixing plate 81 and the middle plate 82 are provided with a plurality of rivet holes with the same number, the lower fixing plate 83 is provided with rivet columns 831 corresponding to the rivet holes, and the upper fixing plate 81, the middle plate 82, the lower fixing plate 83, the lower inner sealing ring 84, the lower outer sealing ring 85 and the upper inner sealing ring 86 are riveted together through the rivet columns 831.
The central exhaust hole of the silencing cover 21 is vertically connected with a guide sleeve 22, the guide sleeve 22 is a circular tube with an annular step at one end, and a guide sleeve sealing gasket 23 is arranged between the annular step and the upper side surface of the silencing cover 21.
In use, the upper inner seal 86 engages the outer circumference of the guide sleeve 22, separating and sealing the high pressure chamber 25 from the low pressure chamber 12. The lower inner seal ring 84 is attached to the inner side wall of the annular groove at the upper end of the fixed scroll 7, and seals the medium pressure chamber 73 and the high pressure chamber 25. The lower outer seal ring 85 is attached to the outer side wall of the annular groove at the upper end of the fixed scroll 7, separates the medium pressure chamber 73 from the low pressure chamber 12, and forms a seal.
The seal assembly 8 further includes a process seal 87, the process seal 87 being located between the upper fixing plate 81 and the intermediate plate 82 and outside the rivet post 831.
The upper end of the upper fixing plate 81 is provided with a circular boss 811, and the upper side surface of the circular boss 811 is attached to the muffler cover 21.
The upper side of the lower fixing plate 83 is provided with at least one annular protrusion 831, and the cross section of the annular protrusion 831 is triangular.
The lower side of the upper fixing plate 81 is provided with at least one annular protruding tip, and the cross section of the annular protruding tip is identical to that of the annular protrusion 831.
The guide sleeve 22 is connected with the silencing cover 21 in a threaded manner.
The connection of the guide sleeve 22 and the noise reduction cover 21 allows the connection by welding, and the guide sleeve gasket 23 is not required to be installed.
After the guide sleeve 22 is welded with the silencing cover 21, the welding seam is required to be subjected to nondestructive inspection, and the welding seam is detected to be in a qualified state.
The beneficial technical effects of the invention are as follows:
(1) The upper inner sealing ring is bonded with the outer circle of the guide sleeve, so that the air inlet low-pressure cavity and the air outlet high-pressure cavity are thoroughly separated, and the problem of poor sealing of the original sealing assembly is solved.
(2) The working efficiency of the scroll compressor is improved.
Drawings
Fig. 1 is a state diagram of the use of the present invention.
Fig. 2 is a schematic view of the installation of the present invention.
Figure 3 is a cross-sectional view of a seal assembly of the present invention.
Fig. 4 is an enlarged view at a of fig. 3.
Number in the figure: the device comprises a casing 1, an air suction port 11, a low-pressure cavity 12, a top cover 2, a silencing cover 21, a guide sleeve 22, a guide sleeve sealing gasket 23, an air outlet 24, a high-pressure cavity 25, a bottom cover 3, a motor 4, a crankshaft 41, a main bearing 5, a movable scroll 6, a fixed scroll 7, a through hole 71, an exhaust valve 72, a medium-pressure cavity 73, a sealing assembly 8, an upper fixing plate 81, a circular boss 811, a middle plate 82, a lower fixing plate 83, a rivet column 831, a lower inner sealing ring 84, a lower outer sealing ring 85, an upper inner sealing ring 86 and a process sealing ring 87.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.
Example 1
Referring to fig. 1-4, a sealing mechanism for a scroll compressor includes a seal assembly 8, a guide sleeve 22, and a guide sleeve gasket 23. The seal assembly 8 includes an upper fixing plate 81, an intermediate plate 82, a lower fixing plate 83, a lower inner seal ring 84, a lower outer seal ring 85, an upper inner seal ring 86, and a process seal ring 87. The upper fixing plate 81 and the middle plate 82 are provided with a plurality of rivet holes with the same number, the lower fixing plate 83 is provided with rivet columns 831 corresponding to the rivet holes, and the upper fixing plate 81, the middle plate 82, the lower fixing plate 83, the lower inner sealing ring 84, the lower outer sealing ring 85 and the upper inner sealing ring 86 are riveted together through the rivet columns 831. The function of the process seal 87 is to keep the rivet gap between the intermediate plate 82 and the upper fixing plate 81 uniform on the inside and outside of the rivet post 831.
The guide sleeve 22 is vertically connected to the central exhaust hole of the silencing cover 21, the guide sleeve 22 is a circular tube with an annular step at one end, and a guide sleeve sealing gasket 23 is arranged between the annular step and the upper side surface of the silencing cover 21. The guide sleeve 22 is connected with the silencing cover 21 in a threaded manner.
The upper side of the lower fixing plate 83 is provided with at least one annular protrusion 831, and the cross section of the annular protrusion 831 is triangular. The lower side of the upper fixing plate 81 is provided with at least one annular protruding tip, and the cross section of the annular protruding tip is identical to that of the annular protrusion 831. The annular bulge and the annular convex tip are embedded into the sealing ring during integral riveting, and play a role in reinforcing sealing and fixing.
The lower inner sealing ring 84, the lower outer sealing ring 85, the upper inner sealing ring 86 and the process sealing ring 87 are all made of Teflon composite materials, and the maximum working temperature can reach 280 ℃.
In use, referring to FIG. 1, the upper inner seal ring 86 engages the outer circumference of the guide sleeve 22, separating and forming a seal between the high pressure chamber 25 and the low pressure chamber 12. The lower inner seal ring 84 is attached to the inner side wall of the annular groove at the upper end of the fixed scroll 7, and seals the medium pressure chamber 73 and the high pressure chamber 25. The lower outer seal ring 85 is attached to the outer side wall of the annular groove at the upper end of the fixed scroll 7, separates the medium pressure chamber 73 from the low pressure chamber 12, and forms a seal. As can be seen from fig. 1 to 3, the opening directions of the lower inner seal ring 84, the lower outer seal ring 85 and the upper inner seal ring 86 all point to the high pressure side, and the lower inner seal ring 84 and the lower outer seal ring 85 make the sealing more reliable under the action of high pressure gas. Similarly, the upper inner seal ring 86 also makes the seal more reliable under the high pressure gas of the air outlet.
Example two
Referring to fig. 1, the connection mode of the guide sleeve 22 and the silencing cover 21 is a welding mode, and the guide sleeve sealing gasket 23 is not required to be installed. Other structures are the same as those of the first embodiment. The welding seam of the welding connection is required to be detected by nondestructive inspection, and is detected to be in a qualified state, and no air leakage phenomenon exists at the welding seam during use.
By adopting the sealing mode of the sealing component and the silencing cover, the air inlet low-pressure cavity at the periphery of the lower side of the silencing cover 21 is separated from the air outlet high-pressure cavity at the center of the upper side of the fixed vortex disk 7, and a flexible sealing structure between the air inlet low-pressure cavity and the air outlet high-pressure cavity is formed. Thoroughly avoided the not tight problem of sealing of original seal assembly.
The above is not intended to limit the structure, shape, or any form of the present invention. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a sealing mechanism for scroll compressor, includes casing (1), top cap (2), bottom (3), motor (4), main bearing (5), moves vortex dish (6), quiet vortex dish (7) and seal assembly (8), casing (1) are the pipe of vertical arrangement, top cap (2) are connected to the upper end of casing (1), bottom (3) are connected to the lower extreme of casing (1), motor (4) are installed in the inside middle lower position of casing (1), and through main bearing (5) and motor stator excircle and casing (1) fixed connection, the rotor of motor (4) is installed on bent axle (41), move vortex dish (6) and install the upper end at bent axle (41), quiet vortex dish (7) peripheral fixed connection is on main bearing (5), and coincide with moving vortex dish (6), top cap (2) downside is equipped with amortization cover (21).
The motor (4), the main bearing (5) and the movable scroll (6) are all positioned in a low-pressure cavity (12) communicated with the air suction port (11), an annular groove is formed in the upper end of the fixed scroll (7), a through hole (71) communicated with a compression cavity below is formed in the annular groove, an exhaust valve (72) is arranged in the center of the upper end of the fixed scroll (7), the exhaust valve (72) is used for communicating the compression cavity below the fixed scroll (7) with a high-pressure cavity (25) communicated with the air outlet (24) below the top cover (2), the sealing assembly (8) is arranged between the fixed scroll (7) and the silencing cover (21), and the lower end of the sealing assembly (8) and the annular groove form a medium-pressure cavity (73);
The method is characterized in that: the sealing assembly (8) comprises an upper fixing plate (81), a middle plate (82), a lower fixing plate (83) and a lower inner sealing ring (84), a lower outer sealing ring (85) and an upper inner sealing ring (86) which are made of Teflon composite materials, wherein a plurality of rivet holes with the same number are formed in the upper fixing plate (81) and the middle plate (82), rivet columns (831) corresponding to the rivet holes are formed in the lower fixing plate (83), and the upper fixing plate (81), the middle plate (82), the lower fixing plate (83), the lower inner sealing ring (84), the lower outer sealing ring (85) and the upper inner sealing ring (86) are riveted together through the rivet columns (831);
The central exhaust hole of the silencing cover (21) is vertically connected with a guide sleeve (22), the guide sleeve (22) is a circular tube with an annular step at one end, a guide sleeve sealing gasket (23) is arranged between the annular step and the upper side surface of the silencing cover (21), and when the silencer is used, an upper inner sealing ring (86) is attached to the outer circle of the guide sleeve (22), separates a high-pressure cavity (25) from a low-pressure cavity (12) and forms a seal; the lower inner sealing ring (84) is attached to the inner side wall of the annular groove at the upper end of the fixed scroll (7), separates the medium-pressure cavity (73) from the high-pressure cavity (25) and forms a seal; the lower outer sealing ring (85) is attached to the outer side wall of the annular groove at the upper end of the fixed scroll (7), separates the medium-pressure cavity (73) from the low-pressure cavity (12) and forms a seal;
The sealing assembly (8) further comprises a process sealing ring (87), wherein the process sealing ring (87) is positioned between the upper fixing plate (81) and the middle plate (82) and is positioned at the outer side of the rivet column (831);
The upper end of the upper fixing plate (81) is provided with a circular boss (811), and the upper side surface of the circular boss (811) is attached to the silencing cover (21).
2. A sealing mechanism for a scroll compressor as set forth in claim 1, wherein: the upper side of the lower fixing plate (83) is provided with at least one annular protrusion (831), and the cross section of the annular protrusion (831) is triangular.
3. A sealing mechanism for a scroll compressor as set forth in claim 2, wherein: the lower side surface of the upper fixing plate (81) is provided with at least one annular convex tip, and the cross section of the annular convex tip is the same as that of the annular protrusion (831).
4. A sealing mechanism for a scroll compressor as set forth in claim 1, wherein: the guide sleeve (22) is connected with the silencing cover (21) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910352524.XA CN110173428B (en) | 2019-04-29 | 2019-04-29 | Sealing mechanism for vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910352524.XA CN110173428B (en) | 2019-04-29 | 2019-04-29 | Sealing mechanism for vortex compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110173428A CN110173428A (en) | 2019-08-27 |
| CN110173428B true CN110173428B (en) | 2024-04-30 |
Family
ID=67690293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910352524.XA Active CN110173428B (en) | 2019-04-29 | 2019-04-29 | Sealing mechanism for vortex compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110173428B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3058629U (en) * | 1998-01-12 | 1999-06-22 | 瑞智精密股▲ふん▼有限公司 | Seal device for scroll compressor |
| CN200996378Y (en) * | 2007-01-16 | 2007-12-26 | 丹佛斯（天津）有限公司 | Vortex compressor with compression-resisting sealing structure |
| CN101413504A (en) * | 2008-11-21 | 2009-04-22 | 珠海格力电器股份有限公司 | Vortex compressor with floating seal and high pressure unloading functions |
| CN202954972U (en) * | 2012-08-07 | 2013-05-29 | 苏州英华特制冷设备技术有限公司 | Axial seal mechanism of scroll compressor |
| CN104963866A (en) * | 2015-06-30 | 2015-10-07 | 李铃 | Refrigerating vortex compressor with new structure |
| CN210033837U (en) * | 2019-04-29 | 2020-02-07 | 苏州为山之环境技术有限公司 | Sealing mechanism for scroll compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7140851B2 (en) * | 2004-09-07 | 2006-11-28 | Chyn Tec. International Co., Ltd. | Axial compliance mechanism of scroll compressor |
-
2019
- 2019-04-29 CN CN201910352524.XA patent/CN110173428B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3058629U (en) * | 1998-01-12 | 1999-06-22 | 瑞智精密股▲ふん▼有限公司 | Seal device for scroll compressor |
| CN200996378Y (en) * | 2007-01-16 | 2007-12-26 | 丹佛斯（天津）有限公司 | Vortex compressor with compression-resisting sealing structure |
| CN101413504A (en) * | 2008-11-21 | 2009-04-22 | 珠海格力电器股份有限公司 | Vortex compressor with floating seal and high pressure unloading functions |
| CN202954972U (en) * | 2012-08-07 | 2013-05-29 | 苏州英华特制冷设备技术有限公司 | Axial seal mechanism of scroll compressor |
| CN104963866A (en) * | 2015-06-30 | 2015-10-07 | 李铃 | Refrigerating vortex compressor with new structure |
| CN210033837U (en) * | 2019-04-29 | 2020-02-07 | 苏州为山之环境技术有限公司 | Sealing mechanism for scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110173428A (en) | 2019-08-27 |
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