CN210033837U - Sealing mechanism for scroll compressor - Google Patents
Sealing mechanism for scroll compressor Download PDFInfo
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- CN210033837U CN210033837U CN201920601296.0U CN201920601296U CN210033837U CN 210033837 U CN210033837 U CN 210033837U CN 201920601296 U CN201920601296 U CN 201920601296U CN 210033837 U CN210033837 U CN 210033837U
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Abstract
The utility model discloses a sealing mechanism for scroll compressor, include casing, top cap, bottom, motor, base bearing, move vortex dish, quiet vortex dish and seal assembly. The silencing cover comprises a sealing assembly upper fixing plate, a middle plate, a lower fixing plate, a lower inner sealing ring, a lower outer sealing ring, an upper inner sealing ring and a process sealing ring, wherein a guide sleeve is vertically connected to a central exhaust hole of the silencing cover. The upper inner sealing ring is attached to the excircle of the guide sleeve, and separates the high-pressure cavity from the low-pressure cavity to form sealing. The lower inner sealing ring is attached to the inner side wall of the annular groove at the upper end of the fixed scroll disc, and separates the medium-pressure cavity and the high-pressure cavity to form sealing. The lower outer sealing ring is attached to the outer side wall of the annular groove at the upper end of the fixed scroll plate, and separates the medium-pressure cavity from the low-pressure cavity to form sealing. The utility model provides a not tight problem of former seal assembly's sealed, improved scroll compressor's work efficiency.
Description
Technical Field
The utility model relates to a compressor technical field, specifically speaking, it relates to a sealing mechanism for scroll compressor.
Background
Scroll compressors have been widely used in the fields of gas compression, refrigeration, and the like because of their advantages of small size, high energy efficiency, and the like. The compression part of the scroll compressor consists of a movable scroll plate and a fixed scroll plate, and the application of the axial flexible sealing technology improves the end face sealing of the involute scroll on the compression part. The vortex compressor moves relative motion between the movable vortex plate and the fixed vortex plate during working, air is continuously extruded towards the center of the vortex plate, the air pressure closer to the center is increased, then when the pressure is maximum, the tail end of the vortex forms dislocation in a moment, a gap is generated, and the air is discharged from the gap through the central hole of the upper exhaust valve and the central hole of the silencing cover, so that high-pressure air flow is formed. However, the seal between the fixed scroll and the silencing cover above the fixed scroll of the existing scroll compressor is a rigid plane contact seal, which is unstable, and the air leakage sometimes occurs, even seriously affecting the normal operation of the scroll compressor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a sealing mechanism for scroll compressor to former seal assembly's the not tight problem of sealing.
A sealing mechanism for a scroll compressor comprises a machine 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 improved vortex generator is characterized in that the casing 1 is a vertically-arranged circular 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 which is lower 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 excircle of the motor stator, the rotor of the motor 4 is installed on the crankshaft 41, the movable vortex disc 6 is installed at the upper end of the crankshaft 41, the periphery of the fixed vortex disc 7 is fixedly connected onto the main bearing 5 and is matched with the movable vortex disc 6, and the lower side of the top cover 2 is provided with.
The motor 4, the main bearing 5 and the movable scroll 6 are all located 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 at the center of the upper end of the fixed scroll 7, the compression cavity below the fixed scroll 7 and a high-pressure cavity 25 below the top cover 2 and communicated with the air outlet 24 are communicated through the exhaust valve 72, the sealing assembly 8 is installed 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, 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. 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 seal ring 84, the lower outer seal ring 85 and the upper inner seal ring 86 are riveted together through the rivet columns 831.
The center exhaust hole of the silencing cover 21 is vertically connected with a guide sleeve 22, the guide sleeve 22 is a round pipe with an annular step at one end, and a guide sleeve sealing gasket 23 is arranged between the annular step and the upper side face of the silencing cover 21.
In use, the upper inner seal 86 engages the outer circumference of the guide sleeve 22 to separate and seal the high pressure chamber 25 from the low pressure chamber 12. The lower inner seal 84 is attached to the inner side wall of the annular groove at the upper end of the fixed scroll 7 to separate the medium pressure chamber 73 from the high pressure chamber 25 and form a seal. The lower outer sealing ring 85 is attached to the outer side wall of the ring 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 sealing assembly 8 further comprises a process sealing ring 87, wherein the process sealing ring 87 is located between the upper fixing plate 81 and the middle plate 82 and is located 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.
At least one annular protrusion 832 is disposed on the upper side of the lower fixing plate 83, and the cross section of the annular protrusion 832 is triangular.
The lower side surface of the upper fixing plate 81 is provided with at least one annular convex tip, and the section of the annular convex tip is the same as that of the annular convex 832.
The guide sleeve 22 and the silencing cover 21 are connected in a threaded manner.
The guide sleeve 22 is connected to the sound-deadening housing 21 in a manner that allows welding, without the guide sleeve gasket 23 being installed.
After the guide sleeve 22 and the silencing cover 21 are welded, nondestructive inspection is needed to be used for detecting the welding seam, and the detection is in a qualified state.
The utility model has the beneficial technical effects that:
(1) the air inlet low-pressure cavity and the air outlet high-pressure cavity are thoroughly separated by the attachment sealing of the upper inner sealing ring and the excircle of the guide sleeve, and the problem of untight sealing of the original sealing assembly is solved.
(2) The working efficiency of the scroll compressor is improved.
Drawings
Fig. 1 is a usage state diagram of the present invention.
Fig. 2 is an installation schematic diagram of the present invention.
Figure 3 is a cross-sectional view of the seal assembly of the present invention.
Fig. 4 is an enlarged view of fig. 3 at a.
Number in the figure: the device comprises a machine shell 1, a 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 middle-pressure cavity 73, a sealing assembly 8, an upper fixing plate 81, an annular boss 811, a middle plate 82, a lower fixing plate 83, a rivet column 831, an annular boss 832, 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 present invention will be further explained by embodiments with reference to the accompanying drawings.
Example one
Referring to fig. 1 to 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, a middle 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 seal ring 84, the lower outer seal ring 85 and the upper inner seal ring 86 are riveted together through the rivet columns 831. The function of the technical seal 87 is to make the riveting gap between the middle plate 82 and the upper fixing plate 81 consistent inside and outside the rivet column 831.
The guide sleeve 22 is vertically connected with a central exhaust hole of the silencing cover 21, the guide sleeve 22 is a round pipe with an annular step at one end, and a guide sleeve sealing gasket 23 is arranged between the annular step and the upper side face of the silencing cover 21. The guide sleeve 22 and the silencing cover 21 are connected in a threaded manner.
At least one annular protrusion 832 is disposed on the upper side of the lower fixing plate 83, and the cross section of the annular protrusion 832 is triangular. The lower side surface of the upper fixing plate 81 is provided with at least one annular convex tip, and the section of the annular convex tip is the same as that of the annular convex 832. The annular bulge and the annular convex tip are embedded into the sealing ring when being integrally riveted, and play a role in strengthening 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 highest working temperature can reach 280 ℃.
In use, referring to figure 1, 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 84 is attached to the inner side wall of the annular groove at the upper end of the fixed scroll 7 to separate the medium pressure chamber 73 from the high pressure chamber 25 and form a seal. The lower outer sealing ring 85 is attached to the outer side wall of the ring 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 the high pressure gas. In a similar way, the upper inner sealing ring 86 is more reliable in sealing under the action of high-pressure gas at the gas outlet.
Example two
Referring to fig. 1, the guide sleeve 22 is connected with the silencing cover 21 by welding, and the guide sleeve gasket 23 does not need to be installed. The other structure and the embodiment are the same. The welding seam of the welding connection needs to be detected by nondestructive inspection, the detection is in a qualified state, and the phenomenon of air leakage does not occur at the welding seam during use.
By adopting the sealing mode of the sealing component and the silencing cover, an air inlet low-pressure cavity at the periphery of the lower side of the silencing cover 21 is separated from an air outlet high-pressure cavity at the center of the upper side of the fixed scroll 7, so that a flexible sealing structure between the air inlet low-pressure cavity and the air outlet high-pressure cavity is formed. The problem that the original sealing assembly is not tight in sealing is thoroughly solved.
The above description is not intended to limit the present invention in any way on its structure or shape. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all still fall within the scope of the technical solution of the present invention.
Claims (8)
1. A sealing mechanism for a scroll compressor comprises a machine 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), wherein the machine shell (1) is a circular tube which is vertically arranged, the top cover (2) is connected to the upper end of the machine shell (1), the bottom cover (3) is connected to the lower end of the machine shell (1), the motor (4) is installed at a position which is lower in the middle of the inside of the machine shell (1) and is fixedly connected with the machine shell (1) through the main bearing (5) and the outer circle of a stator of the motor, a rotor of the motor (4) is installed on a 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 to the main bearing (5) and is matched with the movable scroll (6, a silencing cover (21) is arranged on the lower side of the top cover (2); the motor (4), the main bearing (5) and the movable scroll (6) are all located 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 lower compression cavity 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) enables the compression cavity below the fixed scroll (7) to be communicated with a high-pressure cavity (25) communicated with the air outlet (24) below the top cover (2), the sealing assembly (8) is installed 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), a lower inner sealing ring (84), a lower outer sealing ring (85) and an upper inner sealing ring (86), wherein the lower inner sealing ring (84), the lower outer sealing ring (85) and the upper inner sealing ring (86) are made of Teflon composite materials, 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;
a guide sleeve (22) is vertically connected to a central exhaust hole of the silencing cover (21), the guide sleeve (22) is a round pipe with an annular step at one end, a guide sleeve sealing gasket (23) is arranged between the annular step and the upper side face of the silencing cover (21), and when the silencing cover is used, an upper inner sealing ring (86) is attached to the outer circle of the guide sleeve (22) to separate a high-pressure cavity (25) and a low-pressure cavity (12) and form sealing; 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) to separate the medium-pressure cavity (73) and the high-pressure cavity (25) and form sealing; the lower outer sealing ring (85) is attached to the outer side wall of a ring groove at the upper end of the fixed scroll (7), separates a medium-pressure cavity (73) from a low-pressure cavity (12) and forms sealing.
2. The seal mechanism for a scroll compressor of claim 1, wherein: the sealing assembly (8) further comprises a process sealing ring (87), wherein the process sealing ring (87) is located between the upper fixing plate (81) and the middle plate (82) and located on the outer side of the rivet column (831).
3. The seal mechanism for a scroll compressor of claim 1, wherein: 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).
4. The seal mechanism for a scroll compressor of claim 1, wherein: the upper side surface of the lower fixing plate (83) is provided with at least one annular protrusion (832), and the cross section of the annular protrusion (832) is triangular.
5. The seal mechanism for a scroll compressor of claim 4, wherein: the lower side surface of the upper fixing plate (81) is provided with at least one annular convex tip, and the section of the annular convex tip is the same as that of the annular bulge (832).
6. The seal mechanism for a scroll compressor of claim 1, wherein: the guide sleeve (22) and the silencing cover (21) are connected in a threaded manner.
7. The seal mechanism for a scroll compressor of claim 1, wherein: the guide sleeve (22) and the silencing cover (21) are connected in a welding mode, and the guide sleeve sealing gasket (23) does not need to be installed.
8. The seal mechanism for a scroll compressor of claim 7, wherein: after the guide sleeve (22) and the silencing cover (21) are welded, nondestructive flaw detection is needed to be used at the welding seam, and the detection is in a qualified state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920601296.0U CN210033837U (en) | 2019-04-29 | 2019-04-29 | Sealing mechanism for scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920601296.0U CN210033837U (en) | 2019-04-29 | 2019-04-29 | Sealing mechanism for scroll compressor |
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| Publication Number | Publication Date |
|---|---|
| CN210033837U true CN210033837U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920601296.0U Active CN210033837U (en) | 2019-04-29 | 2019-04-29 | Sealing mechanism for scroll compressor |
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| CN (1) | CN210033837U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173428A (en) * | 2019-04-29 | 2019-08-27 | 苏州为山之环境技术有限公司 | A kind of sealing mechanism for screw compressor |
| CN114294222A (en) * | 2021-12-08 | 2022-04-08 | 松下压缩机(大连)有限公司 | Scroll compressor with air supplementing structure |
-
2019
- 2019-04-29 CN CN201920601296.0U patent/CN210033837U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173428A (en) * | 2019-04-29 | 2019-08-27 | 苏州为山之环境技术有限公司 | A kind of sealing mechanism for screw compressor |
| CN110173428B (en) * | 2019-04-29 | 2024-04-30 | 苏州为山之环境技术有限公司 | Sealing mechanism for vortex compressor |
| CN114294222A (en) * | 2021-12-08 | 2022-04-08 | 松下压缩机(大连)有限公司 | Scroll compressor with air supplementing structure |
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