CN1228550C - Exhaust valve assembly - Google Patents
Exhaust valve assembly Download PDFInfo
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- CN1228550C CN1228550C CN 02117319 CN02117319A CN1228550C CN 1228550 C CN1228550 C CN 1228550C CN 02117319 CN02117319 CN 02117319 CN 02117319 A CN02117319 A CN 02117319A CN 1228550 C CN1228550 C CN 1228550C
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- discharge
- valve
- valve spring
- spring
- discharge cap
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Abstract
The present invention relates to a discharge valve assembly for preventing the abrasion caused by the mutual friction of a valve spring and a discharge cover. The discharge valve assembly comprises a discharge cover, a discharge valve and a valve spring, wherein the discharge cover is arranged on the wire end surface of an air cylinder for making a piston do linear reciprocating motion; the discharge valve is arranged between a switching air cylinder and the discharge cover; the valve spring which can flexibly support the discharge valve and is formed by compressing a spiral spring is arranged between the discharge valve and the discharge cover. The present invention is characterized in that in order to prevent the discharge cover and the valve spring being worn, a cover protecting part is arranged in the position in the discharge cover contacting the valve spring; because the cover protecting part made of lubricating material is arranged between the valve spring and the discharge cover contacting the valve spring, even when the valve spring extends and shrinks so as to generate tightly twisting moment, the valve spring can not directly contact the discharge cover so as to effectively avoid the abrasion between the discharge cover and the valve spring.
Description
Technical field
The present invention relates to a kind of exhaust valve assembly of valve field, particularly relate to a kind of can prevent between valve spring and the discharge cap and cause the exhaust valve assembly of wearing and tearing because of mutual friction mutually.
Background technique
Axial exhaust valve assembly in general valve assembly body is to carry out the straight line back and forth movement by the piston that the rotor with motor is combined as a whole in cylinder to suck gas, to moving direction compression, the discharge gas of piston.When piston carried out back and forth movement, opening and closing the opening and closing speed of discharge valve and the performance of whole exhaust valve assembly had close association.
Fig. 1 and Fig. 2 are the sectional view and the decomposition views of axle direction exhaust valve assembly (below abbreviate exhaust valve assembly as).
As shown in the figure, the exhaust valve assembly of prior art includes following structure: discharge cap 3, discharge valve 4 and valve spring 5.Discharge cap 3 is arranged on and forms certain space S 2 of discharging on the line end face of cylinder 2, is inserted with in the cylinder 2 and carries out the piston 1 that the rotor (not shown) straight line back and forth movement and motor is combined as a whole; Discharge valve 4 is arranged on the inside of discharge cap 3, and when piston 1 carried out back and forth movement, discharge valve 4 was separated from the discharge of the cylinder 2 limit compression gases of holding one's breath from the line end face of cylinder 2; A plurality of valve springs 5 are supported between discharge cap 3 and the discharge valve 4, the back and forth movement of resilient support discharge valve 4.
Above-mentioned valve spring 5 is, twine the compression helical spring of the frustoconical shape that forms by from the starting point to the terminal, having identical spring constant, turning radius, the one end is installed on the inside bottom surface of discharge cap 3, and its other end is installed on the back of discharge valve 4.
Symbol 1a described in the figure is the medium stream, the 6th, and inhaling valve, DP are discharge tubes, S1 is a compression volume.
Below, the driving of the exhaust valve assembly of prior art with said structure is elaborated.
Exhaust valve assembly carries out the driving of following process repeatedly.That is to say, the piston 1 that is combined as a whole with the rotor (not shown) of above-mentioned round drive-type motor (not shown) carries out the straight line back and forth movement in cylinder 2, by the medium stream 1a that is formed on piston 1 inside dielectric gas is drawn into compress in the compression volume S1 of cylinder 2 after, discharge to the outside through the discharge space S 2 of discharge cap 3 again.
Below, the driving process of exhaust valve assembly is elaborated.At first, when piston 1 carries out suction stroke, spray into new suction gas along the medium stream 1a of above-mentioned piston 1, the inhaling valve 6 that gas promotes to be installed on the piston 1 line section flow in the compression volume S1, after being compressed, aforesaid on certain initial point to discharging space S 2 ejections.
Then, when piston 1 compresses and discharges stroke, after the interior suction gas of compression volume S1 that is contained in cylinder 2 is pushed into and compresses in the piston 1, on certain initial point, promote discharge valve 4 and spray to discharging space S 2.Be contained in the pressurized gas in the above-mentioned discharge space S 2, the pressurized gas that is sprayed into again when the progressive motion next time of piston 1 promotes to discharge to the outside of exhaust valve assembly.
On the other hand, when piston 1 compresses and discharges stroke and the valve spring 5 that is pushed together of discharge valve 4 necessarily shrink; When piston 1 carried out suction stroke, valve spring 5 necessarily extended and recovers discharge valve 4.
But the exhaust valve assembly with prior art of said structure has following shortcoming.
When discharge valve 4 opened and closed, the valve spring 5 that is formed by helical spring carried out continuing the trickle tight moment of twisting because of helical spring characteristic can produce in the telescopic process.So, produce surface of contact to the discharge cap 3 of soft materials by the valve spring of epistasis material (5) wear problems.
This shows that above-mentioned existing exhaust valve assembly still has many defectives, and the assistant officer waits to be improved.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome the defective that existing exhaust valve assembly exists, and provide a kind of exhaust valve assembly of new structure, make its valve spring when carrying out expanding-contracting action, to prevent causing wearing and tearing because of being in contact with one another between valve spring and the discharge cap.
The present invention solves its technical problem underlying and realizes by the following technical solutions.Exhaust valve assembly according to the present invention proposes includes discharge cap, discharge valve and valve spring.Discharge cap is contained in piston is carried out on the line end face of cylinder of straight line back and forth movement; discharge valve be arranged on open and close cylinder and discharge cap between; the valve spring of the energy resilient support discharge valve that is formed by compression helical spring is housed between discharge valve and discharge cap; it is characterized in that for preventing that discharge cap and valve spring are worn, in discharge cap, be provided with and cover guard block with the valve spring position contacting.
The present invention solves its technical problem and can also adopt following technical measures further to realize.
Preceding described lid guard block is made of bottom surface protection portion and lateral protection portion.The bottom surface of its bottom surface protection portion protection discharge cap, the side wall surface of lateral protection portion protection discharge cap.
Be pressed into the tail end coil of wire portion of the valve spring that contacts with discharge cap in the preceding described lid guard block.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technological scheme as can be known; owing to adopted above-mentioned modified model exhaust valve assembly new structure; between the discharge cap that valve spring is in contact with it, be provided with the lid guard block of making by the lubricity material; even produce the tight moment of twisting when valve spring stretches; valve spring can not directly contact with discharge cap, has prevented the wearing and tearing between discharge cap and the valve spring.
Above-mentioned explanation only is the general introduction partly of technical solution of the present invention feature, for making the professional and technical personnel can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is that the exhaust valve assembly of prior art is contained in the state sectional view in the cylinder.
Fig. 2 is the exhaust valve assembly decomposition view of prior art.
Fig. 3 is that exhaust valve assembly of the present invention is contained in the state sectional view in the cylinder.
Fig. 4 is an exhaust valve assembly decomposition view of the present invention.
Fig. 5 is the state sectional view that exhaust valve assembly of the present invention is contained in another embodiment in the cylinder.
Fig. 6 is the decomposition view of Fig. 5 exhaust valve assembly.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
1. piston 2. cylinders
3. discharge cap 4. discharge valves
5. valve spring 6. inhaling valves
10,20. lid guard blocks, 11,21. bottom surface protection portions
12,22. 1a. of lateral protection portion medium streams
DP. discharge tube S1. compression volume
S2. discharge the space
See also Fig. 3, shown in Figure 4, as shown in the figure, exhaust valve assembly of the present invention includes following structure: discharge cap 3, discharge valve 4, valve spring 5 and lid guard block 10.Discharge cap 3 is arranged on the cylinder 2, and discharge cap 3 has covered the cylinder 2 that is inserted with piston 1, makes and forms certain space S 2 of discharging on the line end face of cylinder; Discharge valve 4 is arranged on the inboard of discharge cap 3, and when piston 1 carried out back and forth movement, discharge valve 4 was separated from the cylinder 2 of holding one's breath from the line end face of cylinder 2; The two ends of valve spring 5 are installed in respectively between the back of the inner side surface of discharge cap 3 discharge valve 4 corresponding with it; Lid guard block 10 prevents when discharge valve 5 from stretching the wearing and tearing to discharge cap 3 surface of contact between discharge cap 3 and its corresponding valve spring 5.
Valve spring 5 is the compression helical spring of frustoconical shape.One end of its semi major axis is installed on discharge space S 2 inner side surfaces of discharge cap 3, and its short radius one end is installed on the sphere of discharge valve 4.
In addition, lid guard block 10 is made of bottom surface protection portion 11 and lateral protection portion 12.The bottom surface of bottom surface protection portion 11 protection discharge caps 3, the peripheral edge of lateral protection portion 12 and bottom surface protection portion 11 forms the side wall surface of integrated protective discharge cap 3.
Give identical symbol with the same section of prior art among the figure.
Symbol 1a described in the figure is a medium stream, the 6th, and inhaling valve, DP are that discharge tube, S1 are compression volumes
Below, the action effect the when exhaust valve assembly of the present invention with structure is applied in situation on the general reciprocating movement compressor is elaborated.
Exhaust valve assembly of the present invention carries out the driving of following process repeatedly.That is to say, the piston 1 that is combined as a whole by the rotor with back and forth movement formula motor (not shown) carries out the straight line back and forth movement in cylinder 2 inside, through the medium stream 1a that is formed on piston 1 inside dielectric gas is drawn into compress in the compression volume S1 of cylinder 2 after, discharge to the outside by the discharge space S 2 of discharge cap 3 again.
Below, the driving process of exhaust valve assembly of the present invention is elaborated.When above-mentioned piston 1 carries out suction stroke, the inhaling valve 6 that dielectric gas promotes to be arranged on the piston 1 line end face is inhaled in the compression volume S1 of cylinder 2, when piston 1 compressed and discharges stroke, dielectric gas promoted drain tap 4 and is discharged in the discharge space S 2 of discharge cap 3.
In the suction stroke of piston 1, the elastic force of the pressure ratio valve spring 5 in the compression volume S1 is little, and valve spring 5 extends forward discharge valve 4 is installed on the line end face of cylinder 2; In the compression and discharge stroke of piston 1, the elastic force of the pressure ratio valve spring 5 in the compression volume S1 is big, makes valve spring 5 be compressed open above-mentioned discharge valve 4.
At this moment; even the valve spring 5 that forms by helical spring; aforesaidly produce and continue the trickle tight moment of twisting because of when elongation compression on the helical spring characteristic; but, stop discharge cap (3) directly to contact with valve spring 5 by being arranged on the lid guard block 10 that forms by the lubricity material between discharge cap 3 and the valve spring 5.So, prevented that discharge cap 3 or valve spring 5 are worn.
On the one hand, aforesaid lid guard block 10 with " cup " shape is pressed in the inner side surface of discharge cap 3.As shown in Figure 5 and Figure 6, according to circumstances, lid guard block 20 also can form a lateral opening and put upright " L " word section configuration.It is made of the bottom surface protection portion 21 of the above-mentioned discharge cap of protection 3 bottom surfaces and the lateral protection portion 22 of protective side wall face.
In addition, above-mentioned lid guard block 20 is installed in the above-mentioned discharge cap 3, is pressed into the tail end coil of wire portion of above-mentioned valve spring 5 in the inner peripheral surface of its lateral protection portion.
In these cases, stop direct contact the between discharge caps 3 and the valve spring 5, prevent that discharge cap 3 is worn by lid guard block 20.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1, a kind of exhaust valve assembly; include discharge cap, discharge valve and valve spring; discharge cap is contained in piston is carried out on the line end face of cylinder of straight line back and forth movement; discharge valve be arranged on open and close cylinder and discharge cap between; the valve spring of the energy resilient support discharge valve that is formed by compression helical spring is housed between discharge valve and discharge cap, it is characterized in that: in discharge cap, be provided with and cover guard block with the valve spring position contacting.
2, exhaust valve assembly according to claim 1 is characterized in that wherein said lid guard block is made of bottom surface protection portion and lateral protection portion, the bottom surface of its bottom surface protection portion protection discharge cap, the side wall surface of lateral protection portion protection discharge cap.
3, exhaust valve assembly according to claim 1 is characterized in that being pressed in the wherein said lid guard block tail end coil of wire portion of the valve spring that contacts with discharge cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117319 CN1228550C (en) | 2002-05-17 | 2002-05-17 | Exhaust valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117319 CN1228550C (en) | 2002-05-17 | 2002-05-17 | Exhaust valve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458417A CN1458417A (en) | 2003-11-26 |
| CN1228550C true CN1228550C (en) | 2005-11-23 |
Family
ID=29426529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02117319 Expired - Fee Related CN1228550C (en) | 2002-05-17 | 2002-05-17 | Exhaust valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1228550C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375060B (en) * | 2006-01-16 | 2012-08-22 | Lg电子株式会社 | Discharge valve assembly for linear compressor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205897B (en) * | 2006-12-20 | 2010-10-27 | 泰州乐金电子冷机有限公司 | Draining valve assembly of linear compressor |
-
2002
- 2002-05-17 CN CN 02117319 patent/CN1228550C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375060B (en) * | 2006-01-16 | 2012-08-22 | Lg电子株式会社 | Discharge valve assembly for linear compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1458417A (en) | 2003-11-26 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Taizhou LG Electronics Refrigerator Co., Ltd. Assignor: Lejin Electronic and Electric Appliance Co., Ltd. (Tianjin) Contract fulfillment period: 2005.12.30 to 2015.12.29 contract change Contract record no.: 2008320000752 Denomination of invention: Closed rotary compressor discharge valve assembling body installing structure Granted publication date: 20051123 License type: Exclusive license Record date: 20081010 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2005.12.30 TO 2015.12.29; CHANGE OF CONTRACT Name of requester: TAIZHOU LG ELECTRONICS FREEZER CO., LTD. Effective date: 20081010 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051123 |