CN106930944A - Sealing structure and its manufacture method - Google Patents
Sealing structure and its manufacture method Download PDFInfo
- Publication number
- CN106930944A CN106930944A CN201511030075.5A CN201511030075A CN106930944A CN 106930944 A CN106930944 A CN 106930944A CN 201511030075 A CN201511030075 A CN 201511030075A CN 106930944 A CN106930944 A CN 106930944A
- Authority
- CN
- China
- Prior art keywords
- composition surface
- sealing
- sealing structure
- protection medium
- ring seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F04C27/001—Radial sealings for working fluid
- F04C27/003—Radial sealings for working fluid of resilient material
Abstract
The present invention provides sealing structure and its manufacture method; sealing structure therein includes the first composition surface, the second composition surface and the seal assembly set between first composition surface and second composition surface; the seal assembly includes O-ring seal; also include sealing protection medium; the sealing protection medium is located between first composition surface and second composition surface around the outside of the O-ring seal, and the pollutant that can completely cut off erosion first composition surface and second composition surface enters first composition surface, the sealing station on second composition surface.
Description
Technical field
The present invention relates to sealing structure and its manufacture method, it is especially adapted between the housing of compressor, or
Sealing structure between person's housing and the static part being assemblied on housing, such as seal between housing and relief valve,
Sealed between housing and suction, exhaust cover plate.
Background technology
Junction between the housing and housing of compressor, sets the sealing structures such as sealing gasket, sealing ring, prevents gas
There is seepage in body, lubricating oil etc..
In order to improve sealing, Application No. CN02118143.8, the China of Publication No. CN1382908A
Patent document, between two housings, i.e. cylinder block and rear shell, there is provided O-ring seals are dual with pad
Sealing, wherein, O-ring seals are located at the inner side of housing as primary seal, and pad is located at the outside of housing as auxiliary
Help sealing.O-ring seals material is nitrile rubber, is padded as nitrile rubber presss from both sides metallic plate.Compared with single O
Shape sealing ring or single pad are sealed, and above-mentioned sealing structure increased one layer of sealing, and sealing effectiveness is superimposed.
The content of the invention
Foregoing double sealing structure uses the good receipts of initial performances in compressor, but inventor uses hair after a period of time
Existing, leakage problem reproduces, and damaging occur in the sealing position and seal of housing.Inventor is for seal failure
Compressor carries out dissection discovery, and seal, sealing surface occur in that corrosion and corrosion situation.Found through studying inventor
Because the pollutants such as extraneous air, moisture content and impurity corrode metal composition surface, erosion areas between housing and housing
Gradually spread to the position of seal, destroy sealing structure, produce leakage.Further, according to composition surface, close
The damage -form analysis of position is sealed, composition surface in the outer part is the root for causing sealing structure to be destroyed, and pad cannot
Prevent erosion of the environmental contaminants to metal composition surface.
Therefore, it is an object of the invention to provide a kind of sealing structure, to improve the persistence of sealing effectiveness.
To realize the sealing structure of the purpose, including the first composition surface, the second composition surface and on the first composition surface
And second seal assembly set between composition surface, the seal assembly includes O-ring seal, the sealing structure
The characteristics of be that the seal assembly also includes sealing protection medium, sealing protection medium be located at the first composition surface and
Around the outside of O-ring seal between second composition surface, can completely cut off and corrode the first composition surface and the second composition surface
Pollutant enters the first composition surface, the sealing station on the second composition surface.
Because sealing protection dielectric ring is around the outside of O-ring seal, erosion the first composition surface and second can be completely cut off and connect
The pollutant in conjunction face enters the first composition surface, the sealing station on the second composition surface, therefore prevents pollutant to composition surface
Erosion, therefore the first composition surface, the sealing position of the sealing station on the second composition surface and seal be not in damage
Bad or corrosion or corrosion situation, so as to improve the persistence of sealing effectiveness.
In a preferred embodiment, the sealing protection medium is invaded the first of side by the pollutant of O-ring seal
Composition surface, the second composition surface wrap up.
In a preferred embodiment, it is described sealing protection medium be a kind of filler, its be filled in the first composition surface,
Between second composition surface, while sealing function is played, isolation pollutant enters into sealing station.
In a preferred embodiment, the sealing protection medium for can be filled in the first composition surface and the second composition surface it
Between glue.
In a preferred embodiment, the first composition surface, the second composition surface are two engagements of stationary parts of compressor
Face.
In a preferred embodiment, the physical property of the sealing protection medium includes：It is water insoluble；Heat endurance
Between -40~200 DEG C；Insoluble in refrigerant R134a, refrigeration oil；Salt tolerant, acid, alkali, corrosion, it is insoluble
In gasoline, machine oil；Keep paste.
In a preferred embodiment, one kind in the sealing protection medium selection silicone grease, silica gel.
In a preferred embodiment, the first composition surface, the second composition surface in the outside of the O-ring seal in one
Side is provided with bulge loop, and the opposing party sets fluted, bulge loop insertion groove, to stockpile the sealing protection medium.
In a preferred embodiment, the composition surface of the stationary parts of compressor sets fluted, places described in groove
O-ring seal, the medial surface of groove is less than lateral surface.
Another object of the present invention is to provide a kind of manufacture method of sealing structure, it is suitable for sealing protection medium
It is the situation of glue, its groove that O-ring seal is loaded one of the first composition surface, the second composition surface first
In, then along O-ring seal outside circumferential coating sealing protection medium, then by the first composition surface, second
Dock and compress in composition surface.
Aforementioned features of the invention and advantage will be described below connection with figures and specific embodiment is further described through.
Brief description of the drawings
The above and other features of the present invention, property and advantage are by by following connection with figures and embodiment
Describe and become readily apparent from, wherein：
Fig. 1 is the schematic diagram of the scroll compressor in one embodiment of the invention；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 A are the view before the assembling of part shown in Fig. 2；
Fig. 3 B are the inner front view after the coating silicone grease of front end housing 51 in Fig. 1；
Fig. 3 C are the partial enlarged view at B in Fig. 3 B；
Fig. 3 D are the view after the assembling of part shown in Fig. 2；
Fig. 4 is according to front end housing in another embodiment of the present invention and fixed scroll partial view before assembling.
Specific embodiment
The invention will be further described for engagement specific embodiments and the drawings below, elaborates in the following description more
Many details are in order to fully understand the present invention, but the present invention obviously can be with various other described different from this
Mode is implemented, and those skilled in the art can be in the case of without prejudice to intension of the present invention according to practical situations
Make similar popularization, deduce, therefore should not be limited the scope of the invention with the content of this specific embodiment.
Fig. 1 to Fig. 3 D shows one embodiment of the invention, and Fig. 4 is shown in another embodiment of the present invention.
It should be noted that these accompanying drawings only as an example, its be not according to equal proportion condition draw, and
Should not be construed as limiting in this, as the protection domain to actual requirement of the present invention.
In the double sealing structure mentioned in patent document CN1382908A, O-ring seals and pad rise respectively
To the effect of primary seal and auxiliary seal, pad and O-ring seals employ rubber contact material, Liang Zhemi
Envelope effect superposition, service life has extended.However, pad cannot prevent environmental contaminants to metal composition surface
Corrode.On the other hand, O-ring seals, pad are required to install, positioned, the two is arranged on shell side by side
On body section, it is desirable to which housing has enough thickness, thus this double sealing structure clearly not applys to current compression
The trend of machine miniaturization.
In embodiment described later, by taking scroll compressor as an example, the implementation of sealing structure of the invention is illustrated
Mode.It can be mentioned that sealing structure of the invention is not limited to only on scroll compressor or compressor in fact
Apply, can also implement in other same or similar occasions.
Environmental contaminants cannot be prevented to the situation of the erosion on metal composition surface or two composition surfaces for pad, it is aftermentioned
Embodiment will can corrode sealing of the contaminants on composition surface between two composition surfaces from sealing protection medium
Position.
As shown in figure 1, the compression assembly of scroll compressor includes movable orbiting scroll 53 and fixed scroll 52, intermeshing
So as to cross multiple compression chambers 54.The remains stationary of fixed scroll 52, movable orbiting scroll 53 is eccentric with action by bent axle 55
Rotation, the suction refrigerant of peripheral compression chamber 54, compression chamber 54 is gradually to center movement while volume-diminished, moves
To discharging refrigerant during center, so as to realize the compression of refrigerant.Wherein fixed scroll 52 both constitutes compression assembly,
Housing is constituted again, and periphery and the front end housing 51 of fixed scroll 52 are tightly connected cooperation, to prevent refrigerant gas from letting out
Leakage.Fixed scroll 52 is set to include that O-ring seal 59 and sealing are protected with the seal assembly that front end housing 51 is tightly connected
Shield medium, in this embodiment, sealing protection medium selects silicone grease.
As shown in figure 3, front end housing 51 has the first composition surface 510, fixed scroll 52 has the second composition surface 520.
As shown in Fig. 2 the first composition surface 510 of front end housing 51 opens up a ring annular groove 56, in groove 56
The medial surface 57 of side is slightly below the lateral surface 58 positioned at the outside of groove 56, and the two segment difference can be set to 0.06-0.14
Mm, i.e., when current cylinder cap 51 and fixed scroll 52 are fixed, lateral surface 58 turns into and is compressed with the second composition surface 520
The composition surface of docking.O-ring seal 59 is set in groove 56, its material can be, but not limited to be ethylene-propylene-diene monomer
Glue (EPDM), after front end housing 51 is assembled with fixed scroll 52, O-ring seal 59 produces elastic deformation, will
Inside and outside side 57,58 separates.It is O-shaped close when the medial and lateral gas of O-ring seal 59 has pressure difference
The stress of seal 59 is preferably sealed towards side crimp, realization.O-ring seal 59 can have pressure difference shape
Worked under state.
First composition surface 510 is in the coating silicone grease 60 of lateral surface 58, and the silicone grease model DOW CORNING of the present embodiment is public
The MLK-111 of department.Silicone grease 60 can completely cut off the first composition surface of erosion and the pollutant on the second composition surface connects into first
Conjunction face, the sealing station on the second composition surface.
As shown in Fig. 3 A to Fig. 3 D, the first composition surface 510 of front end housing 51 is set to place upward, using automatic
Glue spreader, along lateral surface circumference cabling at least a week, the first composition surface 510 is homogeneously applied to by silicone grease 60
On lateral surface 58.By fixed scroll 52 on front end housing 51, and both are fixed with screw so that front end housing
The lateral surface 58 on 51 the first composition surface 510 is compressed with the second composition surface 520 of movable orbiting scroll 53, silicone grease 60
Lateral surface 58 is distributed evenly in after being squeezed, by whole superolateral surface 58 and near the invasion of extraneous or pollutant
Second composition surface 520 of the fixed scroll 52 of side wraps up.When thering is silicon grease material to overflow, wipe or retain.
Silicone grease 60 intercepts introduced contaminants, the first composition surface 510 of protection, the second composition surface 520 as sealing filling glue
Between metal composition surface do not weather so that during extraneous perishable material cannot be introduced into groove 56, to O
Type sealing ring 59 causes to corrode, therefore increases the normal working life of O-ring seal 59.
From from the perspective of packaging technology, it is preferable that sealing protection medium is a kind of filler, and it is filled in first
Between composition surface, the second composition surface, while sealing function is played, isolation pollutant enters into sealing station.
For example in a preferred embodiment, sealing protection medium is that can be filled between the first composition surface and the second composition surface
Glue.
Sealing protection medium can also be the material with such physical property：Water insoluble, refrigerant R134a,
Refrigeration oil (including alcohols oil (PAG), Esters oil (Easter))；Temperature range in compressor operating
Do not liquefy inside or solidify and fail；Acid-alkali-corrosive-resisting, gasoline, machine oil；Paste is kept, not cure hard etc.
Performance.
Sealing protection medium is also an option that to be silica gel in a preferred embodiment.
As shown in fig. 2 and fig. 3 a, madial wall of position of the O-ring seal 59 in groove 56 relative to groove
562, closer to the lateral wall 561 of groove 56, so the silicone grease 60 of spilling can be limited in O-shaped sealing
A small range between circle 59 and lateral wall 561.
Fig. 4 shows another embodiment of the present invention, and the present embodiment continues to use element numbers and the portion of previous embodiment
Divide content, wherein adopting the identical or approximate element that is denoted by the same reference numerals, and optionally eliminate identical
The explanation of technology contents.Explanation on clipped can refer to previous embodiment, and it is no longer repeated for the present embodiment.
Embodiment shown in Fig. 4 is to be processed on the second composition surface 520 convex with the difference of previous embodiment
Ring 62, the correspondence of lateral surface 58 on the first composition surface 510 processes indenture 63, and bulge loop 62 is embedded in after assembling
In indenture 63, the sealing protection medium of paste so can be more stockpiled.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification.Therefore,
Every content without departing from technical solution of the present invention, according to appointing that technical spirit of the invention is made to above example
What modification, equivalent variations and modification, each falls within the protection domain that the claims in the present invention are defined.
Claims (10)
1. a kind of sealing structure, including the first composition surface, the second composition surface and in first composition surface and institute
The seal assembly set between the second composition surface is stated, the seal assembly includes O-ring seal, it is characterised in that
The seal assembly also includes sealing protection medium, and sealing protection medium is located at first composition surface and described
Around the outside of the O-ring seal between second composition surface, can completely cut off and corrode first composition surface and described
The pollutant on the second composition surface enters first composition surface, the sealing station on second composition surface.
2. sealing structure as claimed in claim 1, it is characterised in that the sealing protection medium is by the O
First composition surface of the pollutant invasion side of type sealing ring, the second composition surface wrap up.
3. sealing structure as claimed in claim 1, it is characterised in that the sealing protection medium is filled out for one kind
Thing is filled, it is filled between the first composition surface, the second composition surface.
4. sealing structure as claimed in claim 1, it is characterised in that the sealing protection medium is can to fill
Glue between the first composition surface and the second composition surface.
5. sealing structure as claimed in claim 1, it is characterised in that first composition surface, described second
Composition surface is respectively two composition surfaces of stationary parts of compressor.
6. sealing structure as claimed in claim 1, it is characterised in that the sealing protection medium it is physical
Matter includes：It is water insoluble；Heat endurance is between -40~200 DEG C；Insoluble in refrigerant R134a, refrigeration oil；
Salt tolerant, acid, alkali, corrosion, insoluble in gasoline, machine oil；Keep paste.
7. sealing structure as claimed in claim 1, it is characterised in that the sealing protection medium selection silicone grease,
One kind in silica gel.
8. sealing structure as claimed in claim 1, it is characterised in that first composition surface, described second
Composition surface is provided with bulge loop in the outside of the O-ring seal in a side, and the opposing party sets fluted, described convex
Ring is embedded in the groove, to stockpile the sealing protection medium.
9. sealing structure as claimed in claim 5, it is characterised in that the composition surface of the stationary parts of compressor
Set fluted, the O-ring seal is placed in groove, the madial wall of the groove is less than lateral wall.
10. a kind of manufacture method of sealing structure, it includes：
First composition surface is provided；
Second composition surface is provided；
O-ring seal is fitted into the groove on one of the first composition surface, the second composition surface；
Characterized in that, also including：
Then medium is protected along the sealing of the circumferential coating paste in the outside of O-ring seal；
The first composition surface, the second composition surface are docked and compressed again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030075.5A CN106930944A (en) | 2015-12-31 | 2015-12-31 | Sealing structure and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030075.5A CN106930944A (en) | 2015-12-31 | 2015-12-31 | Sealing structure and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106930944A true CN106930944A (en) | 2017-07-07 |
Family
ID=59443838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511030075.5A Pending CN106930944A (en) | 2015-12-31 | 2015-12-31 | Sealing structure and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930944A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728890A (en) * | 1980-07-30 | 1982-02-16 | Hitachi Ltd | Non lubricating scroll type fluid machine |
| JPH1077978A (en) * | 1996-09-05 | 1998-03-24 | Hitachi Ltd | Displacement type fluid compressor and coat forming method |
| CN1382908A (en) * | 2001-04-20 | 2002-12-04 | 株式会社丰田自动织机 | Sealed structure for casing of compressor |
| JP3721933B2 (en) * | 2000-04-17 | 2005-11-30 | 株式会社デンソー | Compressor |
| CN201925466U (en) * | 2010-12-13 | 2011-08-10 | 北京北开电气股份有限公司 | Dual sealing structure |
| CN103291621A (en) * | 2012-03-02 | 2013-09-11 | 康奈可关精株式会社 | Sealing structure for compressor |
| CN204420392U (en) * | 2014-12-12 | 2015-06-24 | 成都金嘉洲建材有限公司 | Flange connecting sealing device |
-
2015
- 2015-12-31 CN CN201511030075.5A patent/CN106930944A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5728890A (en) * | 1980-07-30 | 1982-02-16 | Hitachi Ltd | Non lubricating scroll type fluid machine |
| JPH1077978A (en) * | 1996-09-05 | 1998-03-24 | Hitachi Ltd | Displacement type fluid compressor and coat forming method |
| JP3721933B2 (en) * | 2000-04-17 | 2005-11-30 | 株式会社デンソー | Compressor |
| CN1382908A (en) * | 2001-04-20 | 2002-12-04 | 株式会社丰田自动织机 | Sealed structure for casing of compressor |
| CN201925466U (en) * | 2010-12-13 | 2011-08-10 | 北京北开电气股份有限公司 | Dual sealing structure |
| CN103291621A (en) * | 2012-03-02 | 2013-09-11 | 康奈可关精株式会社 | Sealing structure for compressor |
| CN204420392U (en) * | 2014-12-12 | 2015-06-24 | 成都金嘉洲建材有限公司 | Flange connecting sealing device |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |
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| WD01 | Invention patent application deemed withdrawn after publication |