CN101457752A - Split piston for compressor - Google Patents
Split piston for compressor Download PDFInfo
- Publication number
- CN101457752A CN101457752A CNA2008101638828A CN200810163882A CN101457752A CN 101457752 A CN101457752 A CN 101457752A CN A2008101638828 A CNA2008101638828 A CN A2008101638828A CN 200810163882 A CN200810163882 A CN 200810163882A CN 101457752 A CN101457752 A CN 101457752A
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- China
- Prior art keywords
- piston
- skirt
- pin hole
- compressor
- groove
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Abstract
The invention discloses a split piston for a compressor, comprising a piston head, a piston skirt and holding pins, wherein, the piston head and the piston skirt are separated from each other; a semi-piston pin hole, a semi-slot, a positioning projection, a fixed pin hole and an inner cavity are arranged on the piston head; a semi-piston pin hole, a semi-slot, a positioning groove, a fixed pin hole and an inner cavity are arranged on the piston skirt; the semi-piston pin holes of the piston head and the piston skirt form one piston pin hole, the semi-slots of the piston head and the piston skirt form one slot, and the piston head and the piston skirt are fixedly connected by the holding pins through the fixed pin holes to form one piston. The piston pin holes and the piston slot of the split piston for the compressor do not need to be processed by the rough machining processes of drilling, recessing, and the like, and can effectively reduce the material consumption of the parts.
Description
Affiliated technical field
The present invention relates to a kind of piston that is applied to hermetically sealed compressor.
Background technique
As shown in Figure 1, typical hermetically sealed compressor comprises parts such as housing 3, crankcase 4, bent axle 1, connecting rod 2, piston 5, wrist pin 6, valve group 7, motor 8 and refrigeration oil 9.Wherein, motor 8 is fixed on the crankcase 4, and piston 5 is installed in the cylinder-bore of crankcase 4, is connected with connecting rod 2 by wrist pin 6.During compressor operating, bent axle 1 rotates, and it is reciprocating to drive piston 5 by connecting rod 2.Existing refrigeration compressor piston generally adopts powdered metallurgical material to make, because refrigeration compressor requires very high to part precision, compressor piston must reach the needed required precision of refrigeration compressor by a series of manufacturing procedures such as boring, bore hole, recessing, chamfering, cylindrical grindings, manufacturing procedure is more, and operation such as its boring, recessing can produce a lot of processing smear metals, and raw materials consumption is many.Fig. 2 is to a kind of traditional solid piston that is shown in Figure 5, comprise piston crown 12, piston pin hole 11, piston groove 14, piston skirt 10 and inner chamber 13 etc., piston crown 12 and piston skirt 10 are an one-piece element, wherein piston pin hole 11 needs drilling and boring, and piston groove 14 needs turning.
Summary of the invention
Manufacturing procedures such as technical problem to be solved by this invention is to provide a kind of and can avoids holing, recessing, can effectively reduce the compressor split piston of the raw materials consumption of part.
For solving the problems of the technologies described above, compressor of the present invention comprises piston crown with the split piston, piston skirt and fixed pin, described piston crown and piston skirt are separate separately, described piston crown is provided with half piston pin hole, half groove, positioning convex, fixed pin holes and inner chamber, described piston skirt is provided with half piston pin hole, half groove, positioning groove, fixed pin holes and inner chamber, half piston pin hole of described piston crown and half piston pin hole of piston skirt are formed a piston pin hole, half groove of described piston crown and half groove of piston skirt are formed a piston groove, described piston crown tightens up with fixed pin holes by fixed pin with the piston skirt and links to each other, and forms a piston.
Above-mentioned compressor split piston, the positioning convex of described piston crown can be one or more, and being shaped as of described positioning convex is circular, square, semicircle, taper or circular arc.
Above-mentioned compressor split piston, the fixed pin holes of described piston crown has one or more, described fixed pin holes be shaped as circle, polygonal or various irregularly shaped.
Above-mentioned compressor split piston, the positioning groove of described piston skirt has one or more, and the shape of described positioning groove matches with the shape of the positioning convex of described piston crown.
The present invention is owing to adopted technique scheme, and it utilizes the positioning convex of piston crown and the positioning groove of piston skirt to locate, and utilizes fixed pin holes to fix piston crown and piston skirt, thereby is assembled into a piston element.Because can directly passing through the pressing process of powder metallurgy, half piston pin hole and half groove be shaped, therefore compressor of the present invention does not need roughing operations such as boring and recessing with the piston pin hole and the piston groove of split piston, and can reduce the raw materials consumption of part effectively.Through measuring and calculating, adopt split piston of the present invention, raw materials consumption can descend more than 10%.
Description of drawings
Fig. 1 is the sectional view of piston at the compressor interior location;
Fig. 2 is the outline drawing of existing solid piston;
Fig. 3 is the longitudinal sectional view of solid piston shown in Figure 2;
Fig. 4 is the side view with respect to Fig. 3;
Fig. 5 is the attached view with respect to Fig. 3;
Fig. 6 is the outline drawing of split piston of the present invention;
Fig. 7 is the longitudinal sectional view of split piston of the present invention;
Fig. 8 is the side view with respect to Fig. 7;
Fig. 9 is the attached view with respect to Fig. 7;
Figure 10 is the exploded view of split piston of the present invention;
Figure 11 is the outline drawing of piston crown of the present invention.
Embodiment
To shown in Figure 9, split piston of the present invention comprises piston crown 12, piston pin hole 11, piston groove 14, piston skirt 10, inner chamber 13, fixed pin holes 15 and fixing pin 18 etc. as Fig. 6.Piston crown 12 and piston skirt 10 are separate separately, and both become a split piston after by fixing pin 18 mounts.Piston crown 12 is provided with half piston pin hole 17, and piston skirt 10 becomes piston pin hole 11 after being provided with half piston pin hole, 16, half piston pin holes 16 and 17 assemblings of half piston pin hole.Half piston pin hole 16 and half piston pin hole 17 can pass through the direct press forming of powder metallurgical technique, so piston pin hole 11 do not need drilling, only need boring.
As shown in figure 10, the piston crown 12 of split piston of the present invention is provided with positioning convex 21 and fixed pin holes 20, piston skirt 10 is provided with positioning groove 22 and fixed pin holes 19, locate by positioning convex 21, positioning groove 22 piston crown 12 and piston skirt 10, back, location fixing pin 18 inserts fixed pin holes 19 and fixed pin holes 20, thereby is assembled into a split piston element.Piston crown 12 is provided with half groove 24, and piston skirt 10 becomes piston groove 14 after being provided with half groove, 23, half grooves 24 and 23 assemblings of half groove.Half groove 24 and half groove 23 can pass through the direct press forming of powder metallurgical technique, so piston groove 14 does not need turning.
Because the piston pin hole of split piston of the present invention and piston groove do not need roughing operations such as boring and recessing, can improve utilization rate of raw materials.Through on probation, split piston utilization rate of raw materials of the present invention can improve more than 10%.Because of not needing roughing operations such as boring and recessing, manufacture costs such as equipment investment, personnel's configuration, cutter expense have obvious decline, can reduce the discharging of pollutants such as cutting fluid simultaneously.
Claims (4)
1, compressor split piston, comprise piston crown, piston skirt and fixed pin, it is characterized in that, described piston crown and piston skirt are separate separately, described piston crown is provided with half piston pin hole, half groove, positioning convex, fixed pin holes and inner chamber, described piston skirt is provided with half piston pin hole, half groove, positioning groove, fixed pin holes and inner chamber, half piston pin hole of described piston crown and half piston pin hole of piston skirt are formed a piston pin hole, half groove of described piston crown and half groove of piston skirt are formed a piston groove, and described piston crown tightens up with fixed pin holes by fixed pin with the piston skirt and links to each other.
2, compressor as claimed in claim 1 split piston is characterized in that, the positioning convex of described piston crown can be one or more, and being shaped as of described positioning convex is circular, square, semicircle, taper or circular arc.
3, compressor as claimed in claim 1 or 2 split piston is characterized in that, the fixed pin holes of described piston crown has one or more, described fixed pin holes be shaped as circle, polygonal or various irregularly shaped.
4, compressor as claimed in claim 1 or 2 split piston is characterized in that, the positioning groove of described piston skirt has one or more, and the shape of described positioning groove matches with the shape of the positioning convex of described piston crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101638828A CN101457752B (en) | 2008-12-22 | 2008-12-22 | Split piston for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101638828A CN101457752B (en) | 2008-12-22 | 2008-12-22 | Split piston for compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101457752A true CN101457752A (en) | 2009-06-17 |
| CN101457752B CN101457752B (en) | 2011-06-29 |
Family
ID=40768802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101638828A Active CN101457752B (en) | 2008-12-22 | 2008-12-22 | Split piston for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101457752B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332813A (en) * | 2014-08-11 | 2016-02-17 | 强道前 | Engine piston |
| WO2022062012A1 (en) * | 2020-09-25 | 2022-03-31 | 罗超彬 | Double-layer air pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1054347A (en) * | 1996-08-09 | 1998-02-24 | Toyota Autom Loom Works Ltd | Piston and compressor using it |
| CN2405039Y (en) * | 1999-09-24 | 2000-11-08 | 刘志刚 | Piston assembly for mud pump |
| AT413233B (en) * | 2000-07-03 | 2005-12-15 | Verdichter Oe Ges M B H | PISTON RELEASE |
| US6540492B2 (en) * | 2001-04-09 | 2003-04-01 | Carrier Corporation | Compressor piston with reduced discharge clearance |
| CN1769705A (en) * | 2004-11-05 | 2006-05-10 | 乐金电子(天津)电器有限公司 | Piston structure of hermetic compressor |
-
2008
- 2008-12-22 CN CN2008101638828A patent/CN101457752B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332813A (en) * | 2014-08-11 | 2016-02-17 | 强道前 | Engine piston |
| WO2022062012A1 (en) * | 2020-09-25 | 2022-03-31 | 罗超彬 | Double-layer air pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101457752B (en) | 2011-06-29 |
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| C14 | Grant of patent or utility model | ||
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