CN207634260U - A kind of piston of Reciprocting piston compressor - Google Patents
A kind of piston of Reciprocting piston compressor Download PDFInfo
- Publication number
- CN207634260U CN207634260U CN201721590803.2U CN201721590803U CN207634260U CN 207634260 U CN207634260 U CN 207634260U CN 201721590803 U CN201721590803 U CN 201721590803U CN 207634260 U CN207634260 U CN 207634260U
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- CN
- China
- Prior art keywords
- piston
- compressor
- plush copper
- valve plate
- reciprocting
- 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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Abstract
The utility model discloses a kind of piston of Reciprocting piston compressor, including piston main body and piston plush copper, piston plush copper and piston main body one-pass molding, piston plush copper is using preceding streamlined arc-shaped surface design.The maximum gauge of piston plush copper is not more than the diameter of the vent ports of compressor air-discharging valve plate, and the maximum height of piston plush copper is not more than the thickness of compressor air-discharging valve plate.The utility model can reduce impact and resistance of the compressed air stream to piston plush copper, to reduce the drag losses of compressor compresses process.It can reduce the impact of the disturbance and air-flow that generate to air-flow to valve block simultaneously, improve the reliability of exhaust valve plate, and be further reduced the clearance volume of compressor, improve the displacement of compressor.
Description
Technical field
The utility model is related to arrive Reciprocting piston compressor technical field, specifically it is applied to volume of cylinder and utilizes
The piston of the more demanding Reciprocting piston compressor of rate.
Background technology
Small-sized Reciprocting piston compressor is generally used for freezer compressor.Currently, in the market for the performance of ice press
And miniaturization, it is light-weighted require it is higher and higher.Due to being influenced by valve plate thickness, when piston is run to top dead centre, row
A certain amount of clearance volume is certainly existed in gas opening.By changing the structure of piston, cylinder can be improved using piston plush copper
Capacity utilization, increase the refrigerating capacity of refrigeration compressor；Simultaneously by rational piston plush copper structure, input work can be reduced
Rate improves the Energy Efficiency Ratio of compressor.Notification number is that the Chinese utility model patent of CN2417306Y discloses a kind of refrigerant compression
Machine protruding top piston cylinder, but it does not carry out detailed analysis to the shape of piston plush copper, does not fully consider piston plush copper pair
The influence of exhaust airstream.Gone up for refrigeration compressor, if even if improving refrigerating capacity but the relative power consumption of compressor,
Its Energy Efficiency Ratio not necessarily increases.
Invention content
The technical problem to be solved by the utility model is to propose a kind of capacity utilization effectively improving compressor
And its piston of the Reciprocting piston compressor of Energy Efficiency Ratio.
In order to solve the above technical problems, a kind of piston of Reciprocting piston compressor of the utility model include piston main body and
Piston plush copper, the piston plush copper and piston main body one-pass molding, the piston plush copper is using preceding streamlined arc-shaped surface design.
A kind of piston of above-mentioned Reciprocting piston compressor, the preceding streamlined arc-shaped surface of the piston plush copper be spherical surface,
Ellipsoid or paraboloid.
The maximum gauge of a kind of piston of above-mentioned Reciprocting piston compressor, the piston plush copper is not more than compressor air-discharging
The diameter of the vent ports of valve plate, the maximum height of the piston plush copper are not more than the thickness of compressor air-discharging valve plate.
The utility model as a result of above-mentioned technical pattern, it can reduce compressed air stream to the impact of piston plush copper with
And resistance, to reduce the drag losses of compressor compresses process.It can reduce and be produced to air-flow when stretching into vent ports simultaneously
Impact of the raw disturbance and air-flow to valve block improves the reliability of exhaust valve plate to optimize the movement of exhaust valve plate, weakens row
Gaseous pulse is dynamic.When piston is moved to top dead-centre, the high pressure gas in vent ports is squeezed out, to be further reduced more than compressor
Gap volume improves the displacement of compressor.
Description of the drawings
Fig. 1 is the attachment structure schematic diagram of the utility model piston and exhaust valve plate；
Fig. 2 is the close-up schematic view in Fig. 1；
Fig. 3 is the dimensional structure diagram that the utility model piston is connected with exhaust valve plate；
Fig. 4 is the structure coordinate schematic diagram of the utility model piston.
Specific implementation mode
As shown in figure 4, the piston of the utility model Reciprocting piston compressor includes piston main body 1 and piston plush copper 2, it is living
Fill in plush copper 2 and 1 one-pass molding of piston main body.As shown in Figure 1, Figure 2 and Figure 3, in installation process, piston plush copper 2 and exhaust valve plate 3
Vent ports 4 it is corresponding.The maximum height of piston plush copper 2 is no more than the thickness of exhaust valve plate 3, and the maximum of piston plush copper 2 is directly
Diameter is not more than the diameter of vent ports 4.Piston plush copper 2 can reduce compressor compresses mistake using preceding streamlined arc-shaped surface design
The drag losses of journey, while the disturbance generated to air-flow when stretching into vent ports 4 can be reduced, to optimize the fortune of exhaust valve plate
It is dynamic, the reliability of exhaust valve plate is improved, exhaust gas pulses are weakened.When piston is moved to top dead-centre, piston plush copper 2 and vent ports
4 high pressure gas coordinated in extrudable vent ports 4, is further reduced the clearance volume of compressor, improves the defeated of compressor
Tolerance.The streamlined arc-shaped surface of piston plush copper 2 is that spherical surface, ellipsoid or paraboloid etc. meet streamlined structure, smooth
And the curved surface of rule, not big fluctuating and sharp corner angle.
It is sat as shown in figure 4, establishing Descartes using the faying face center of piston plush copper 2 and piston main body 1 as coordinate origin
Mark system, the intercept length that arc-shaped surface corresponds to X, Y, Z axis is respectively a, b, c, as the fairing ace of piston plush copper 2 uses ellipsoid
Face, i.e. plush copper are half of ellipsoid, and the coordinate position on surface meets EQUATION x2 / a2+y2 / b2+z2 / c2=1.Example exhaust valve
The thickness of plate 3 is 5mm, a diameter of 4.5mm of vent ports 4, takes 4mm at this point for the diameter of piston plush copper 2, highly takes
4.2mm, i.e. equation in coordinates parameter a=b=2, c=4.2；If the shape of vent ports 4 is oval or is irregular shape, then parameter
A, b should be less than the half of 4 corresponding section minimum range of vent ports.
Claims (3)
1. a kind of piston of Reciprocting piston compressor, including piston main body and piston plush copper, which is characterized in that the piston is convex
Head and piston main body one-pass molding, the piston plush copper is using preceding streamlined arc-shaped surface design.
2. a kind of piston of Reciprocting piston compressor as described in claim 1, which is characterized in that before the piston plush copper
Streamlined arc-shaped surface is spherical surface, ellipsoid or paraboloid.
3. a kind of piston of Reciprocting piston compressor as claimed in claim 1 or 2, which is characterized in that the piston plush copper
Maximum gauge no more than compressor air-discharging valve plate vent ports diameter, the maximum height of the piston plush copper is no more than pressure
Contracting machine is vented the thickness of valve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721590803.2U CN207634260U (en) | 2017-11-24 | 2017-11-24 | A kind of piston of Reciprocting piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721590803.2U CN207634260U (en) | 2017-11-24 | 2017-11-24 | A kind of piston of Reciprocting piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634260U true CN207634260U (en) | 2018-07-20 |
Family
ID=62857915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721590803.2U Active CN207634260U (en) | 2017-11-24 | 2017-11-24 | A kind of piston of Reciprocting piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207634260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7200310B1 (en) | 2021-08-05 | 2023-01-06 | 株式会社三井Ｅ＆Ｓマシナリー | piston pump |
-
2017
- 2017-11-24 CN CN201721590803.2U patent/CN207634260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7200310B1 (en) | 2021-08-05 | 2023-01-06 | 株式会社三井Ｅ＆Ｓマシナリー | piston pump |
| JP2023023502A (en) * | 2021-08-05 | 2023-02-16 | 株式会社三井Ｅ＆Ｓマシナリー | piston pump |
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