CN211202235U - Piston for refrigeration compressor - Google Patents
Piston for refrigeration compressor Download PDFInfo
- Publication number
- CN211202235U CN211202235U CN201922116401.4U CN201922116401U CN211202235U CN 211202235 U CN211202235 U CN 211202235U CN 201922116401 U CN201922116401 U CN 201922116401U CN 211202235 U CN211202235 U CN 211202235U
- Authority
- CN
- China
- Prior art keywords
- piston
- oil
- compressor
- piston body
- semi
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a piston for compressor, including the piston body, piston body (1) outside front end is provided with sealed face (2), and the rear end is provided with spigot surface (3), be provided with semi-circular spiral flow channel groove (4) and piston pin pinhole (5) on spigot surface (3), be provided with oil leak hole (6) on semi-circular spiral flow channel groove (4), be provided with between semi-circular spiral flow channel groove (4) gib block (8), piston body (1) inside is provided with elasticity round pin pinhole (7). The piston not only has a good sealing surface, but also can reduce the friction loss when the piston does reciprocating linear motion in the cylinder, can reduce the oil discharge of the compressor, can reduce the temperature of the cylinder through the rapid circulation of an oil way, and can further improve the performance of the compressor and the matching performance of a refrigerating system, so that the whole mechanical efficiency is improved by 2 percent, the noise of the whole machine is reduced by 2dB, and the piston has a wide market prospect.
Description
Technical Field
The utility model belongs to the technical field of the compressor spare and accessory part and specifically relates to a piston for compressor.
Background
For a refrigerator refrigeration compressor, energy efficiency is expected to be improved, mechanical efficiency reaches over 90 percent at present, and further improvement is very difficult. Because the piston does reciprocating linear motion relative to the cylinder, a certain friction loss is generated between the piston and the cylinder particularly in the process of compressing refrigerant gas, and the input power of the compressor is increased. In order to reduce the friction loss between the piston and the cylinder and improve the energy efficiency ratio of the compressor, the existing piston or cylinder design has applied a method for reducing the friction pair loss between the piston and the cylinder, such as increasing the width of the piston oil groove. But the oil discharge amount of the compressor is increased when the oil groove is too wide, the oil discharge amount of the compressor is large, and the oil enters a refrigerating system, so that the refrigerating efficiency is reduced.
Disclosure of Invention
The utility model discloses a solve the technical problem of current piston, provide a novel structure, simple to operate, low cost's a piston for compressor.
For solving the technical problem the utility model discloses a technical scheme does: the piston for the refrigeration compressor comprises a piston body and is characterized in that a sealing surface is arranged at the front end of the outer side of the piston body, a guide surface is arranged at the rear end of the outer side of the piston body, a semicircular spiral flow channel groove and a piston pin hole are formed in the guide surface, an oil leakage hole is formed in the semicircular spiral flow channel groove, a guide strip is arranged between the semicircular spiral flow channel grooves, an elastic pin hole is formed in the piston body, and the height of the guide strip is the same as that of the sealing surface.
The length of the sealing surface is 6-8 mm, and the length of the guide surface is 10-12 mm.
The radius of the semicircular spiral runner groove is R3-R10.
The included angle between the semicircular spiral runner groove and the horizontal plane is 10-30 degrees.
The oil leakage hole is arranged in the middle of the semicircular spiral runner groove.
The oil leakage hole is a conical hole, and the hole of the oil leakage hole is gradually reduced from the surface to the inside of the piston body.
The diameter of the oil leakage hole on the surface of the piston body is 3mm, and the diameter of the oil leakage hole inside the piston body is 2 mm.
The number of the semicircular spiral runner grooves on the guide surface is 14, and the number of the oil leakage holes is 10.
The utility model discloses the protection piston both had good sealed face, can reduce the friction loss of piston when making reciprocal linear motion in the cylinder again, can reduce the oil extraction of compressor again, can reduce the temperature of cylinder through the quick cycle of oil circuit again to can further improve compressor performance and refrigerating system's matching performance, make whole mechanical efficiency promote 2%, the complete machine noise has descended 2dB, consequently has wide market prospect.
Drawings
Fig. 1 is a schematic structural view of a piston of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 3;
fig. 5 is a sectional view in the direction a-a of fig. 3.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings 1-5 and the detailed description:
the utility model provides a piston for compressor, includes the piston body, 1 outside front end of piston body pouring has sealed face 2, and the rear end pouring has a spigot surface 3, the pouring has semi-circular spiral flow path groove 4 and piston pin pinhole 5 on the spigot surface 3, powder metallurgy cold extrusion moulding has oil leak hole 6 on the semi-circular spiral flow path groove 4, the pouring has guide strip 8 between the semi-circular spiral flow path groove 4, the processing of the inside drilling pin of piston body 1 has elastic pin pinhole 7, the height of guide strip 8 is the same with sealed face 2.
The length of the sealing surface 2 is 7mm, and the length of the guide surface 3 is 11 mm.
The radius of the semicircular spiral flow channel groove 4 is R5.
The included angle between the semicircular spiral runner groove 4 and the horizontal plane is 20 degrees.
And the oil leakage hole 6 is milled or drilled to process the middle part of the semicircular spiral flow channel groove 4.
The oil leakage hole 6 is a tapered hole, and the hole of the oil leakage hole gradually decreases from the surface to the inside of the piston body 1.
The diameter of the oil leakage hole 6 on the surface of the piston body 1 is 3mm, and the diameter of the oil leakage hole inside the plug body 1 is 2 mm.
The number of the semicircular spiral flow channel grooves 4 on the guide surface 3 is 14, and the number of the oil leakage holes 6 is 10.
The utility model discloses the application method of piston does:
the utility model discloses a piston assembly is in the cylinder hole, and is 8um with the simple clearance in cooperation in cylinder hole, is connected through the piston pin with the microcephaly of connecting rod, and the elastic pin of impressing prevents that the piston pin is not hard up. The big end of the connecting rod is connected with a crankshaft, the crankshaft drives a piston to do reciprocating linear motion through the action and the rotary motion of a motor, and the structure is a typical crank-connecting rod mechanism. It sucks low-temperature and low-pressure refrigerant gas from the air suction pipe, compresses the refrigerant gas through high-speed movement of the piston in the cylinder hole, forms high-temperature and high-pressure gas, and discharges the high-temperature and high-pressure gas from the air discharge pipe, thereby realizing the refrigeration cycle of compression-condensation-expansion-evaporation (heat absorption).
The centrifugal force of the general bent axle of compressor's refrigeration oil is sucked up, lubricates each motion friction part, and wherein a part of oil throws oil to piston and cylinder hole from the balancing piece of bent axle, and oil flows in from spiral flow path groove 4, forms protection film lubrication piston and cylinder hole, then flows in the inner chamber of piston from oil leak 6 and flows out the cylinder hole again, and the oil leak designs into the oil storage that the similar funnel of toper type can be better and the oil leak. The utility model discloses a piston has 14 spiral oil grooves and 10 oil leakages, and the inflow of refrigeration oil is very fast with the circulation rate of outflow, and lubrication cylinder hole that can be abundant can also guarantee that the oil temperature of refrigeration oil can not rise, can cool down the temperature of cylinder, along with the temperature drop of cylinder the mechanical efficiency and the gas transmission efficiency of compressor can be great improvement to the COP of compressor has been improved. The utility model discloses a runner design of piston can also reduce the oil extraction of compressor, can further improve compressor performance and refrigerating system's matching performance. The utility model discloses a piston has 14 circular arc type helicla flute structure structures, can effectively reduce the contact surface in piston and cylinder hole to reduce the frictional force in piston and cylinder hole, promoted the efficiency of compressor.
The above description is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and the technical solution and the inventive concept of the present invention should be covered by the protection scope of the present invention with equivalent replacement or change.
Claims (8)
1. The utility model provides a piston for compressor, includes piston body, its characterized in that, piston body (1) outside front end is provided with sealed face (2), and the rear end is provided with spigot surface (3), be provided with semi-circular spiral runner groove (4) and piston pin pinhole (5) on spigot surface (3), be provided with oil leak hole (6) on semi-circular spiral runner groove (4), be provided with between semi-circular spiral runner groove (4) gib block (8), piston body (1) inside is provided with elastic pin pinhole (7), the height of gib block (8) is the same with sealed face (2).
2. The piston of claim 1, wherein: the length of the sealing surface (2) is 6-8 mm, and the length of the guide surface (3) is 10-12 mm.
3. The piston of claim 1, wherein: the radius of the semicircular spiral runner groove (4) is R3-R10.
4. The piston of claim 1, wherein: the included angle between the semicircular spiral runner groove (4) and the horizontal plane is 10-30 degrees.
5. The piston of claim 1, wherein: the oil leakage hole (6) is arranged in the middle of the semicircular spiral runner groove (4).
6. The piston of claim 1, wherein: the oil leakage hole (6) is a conical hole, and the hole of the oil leakage hole is gradually reduced from the surface to the inside of the piston body (1).
7. The piston of claim 1, wherein: the diameter of the oil leakage hole (6) on the surface of the piston body (1) is 3mm, and the diameter of the oil leakage hole inside the piston body (1) is 2 mm.
8. The piston of claim 1, wherein: the number of the semicircular spiral flow channel grooves (4) on the guide surface (3) is 14, and the number of the oil leakage holes (6) is 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116401.4U CN211202235U (en) | 2019-12-02 | 2019-12-02 | Piston for refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116401.4U CN211202235U (en) | 2019-12-02 | 2019-12-02 | Piston for refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202235U true CN211202235U (en) | 2020-08-07 |
Family
ID=71851815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922116401.4U Active CN211202235U (en) | 2019-12-02 | 2019-12-02 | Piston for refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909272A (en) * | 2022-04-13 | 2022-08-16 | 黄石东贝压缩机有限公司 | Cylinder block for improving performance of compressor |
-
2019
- 2019-12-02 CN CN201922116401.4U patent/CN211202235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909272A (en) * | 2022-04-13 | 2022-08-16 | 黄石东贝压缩机有限公司 | Cylinder block for improving performance of compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202370792U (en) | Crankshaft applied to refrigeration compressor | |
| CN103939467B (en) | Air hydrostatic bearing of machine making free piston type reciprocating motion | |
| CN211202235U (en) | Piston for refrigeration compressor | |
| JP2014080982A (en) | Hermetic type compressor and freezer | |
| CN105697372A (en) | Scroll compressor and refrigeration system | |
| CN204357709U (en) | Rotary compressor | |
| CN203404048U (en) | Pressurized oil supply lubrication mechanism for compressor | |
| WO2020029561A1 (en) | Compressor and refrigeration apparatus | |
| CN205117658U (en) | A piston for totally closed compressor | |
| CN102162543A (en) | Four-way reversing valve for refrigerating system | |
| CN204113659U (en) | Compressor | |
| CN203584812U (en) | Skateboard-type air compressor | |
| CN205401117U (en) | Novel high -efficient rotary compressor | |
| CN204299824U (en) | A kind of inner spiral groove fuel sucking pipe for frequency conversion refrigerator compressor | |
| CN206320017U (en) | A kind of cylinder body of refrigeration compressor | |
| CN105508252B (en) | Compressor | |
| CN208380866U (en) | A kind of compressor | |
| CN207974942U (en) | A kind of compressor piston | |
| CN201896712U (en) | Swing compressor | |
| CN202082068U (en) | Piston compressor | |
| CN202612122U (en) | Integral fully-enclosed type refrigeration vortex pump | |
| CN212717065U (en) | Piston for reducing friction pair loss of totally-enclosed compressor | |
| CN215486481U (en) | Non-slotted cylinder seat and integral connecting rod combined structure | |
| CN217976608U (en) | Single-machine two-stage compressor of low-temperature refrigeration equipment | |
| CN217976597U (en) | Pump body for hermetic compressor and hermetic compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |