CN102230462A - Plane motion piston compressor - Google Patents
Plane motion piston compressor Download PDFInfo
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- CN102230462A CN102230462A CN201110158757XA CN201110158757A CN102230462A CN 102230462 A CN102230462 A CN 102230462A CN 201110158757X A CN201110158757X A CN 201110158757XA CN 201110158757 A CN201110158757 A CN 201110158757A CN 102230462 A CN102230462 A CN 102230462A
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- piston compressor
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Abstract
The invention relates to a plane motion piston compressor. A connecting rod and a piston are arranged into a whole; and the contact part between the piston and a working mirror surface of a cylinder is in a spherical surface. Compared with the traditional piston compressor motion mechanism, the plane motion piston compressor disclosed by the invention has the characteristics of reducing a movable member and a motion pair, shortening a motion chain of the compressor, being provided with a more portable motion mechanism, also reducing the size errors of all members and the motion mechanism accumulated error generated by the clearance of the motion pair and having relative lower processing precision requirements of all the members. The plane motion piston compressor disclosed by the invention has the advantages of simple structure, high mechanical efficiency and low manufacture cost and is suitable for the fields of miniature air compressors, refrigerating compressors, and the like.
Description
Technical field
The present invention relates to a kind of piston compressor, especially relate to a kind of plane motion piston compressor.
Background technique
Piston compressor is the universal machine that improves all gases pressure by volume-variation, spreads all over industrial or agricultural, communications and transportation even various fields in life.Conventional piston compressor motion is to be developed and next slidercrank mechanism by four-bar linkage, and this mechanism's movable part comprises bent axle, connecting rod and piston.Bent axle links to each other with driving machine, and bent axle rotates.Piston and cylinder etc. constitute active chamber, and piston is only done translation, is to-and-fro motion, and working chamber volume changes with piston motion, realize suction, compression and the discharge of gas.Bent axle is connected by connecting rod with piston.Connecting rod small end is connected with piston by wrist pin, and connecting rod small end is reciprocating; Connnecting rod big end is connected with crankshaft pin, and connnecting rod big end rotates; Connecting rod shank is done plane motion.
On mechanics, conventional piston compressor kinematic pair has 4, and wherein crankcase and bent axle, bent axle and connecting rod, connecting rod and piston motion pair are revolute pair, and piston and cylinder moving pair are sliding pair.4 kinematic pair all are lower pair, and two continuous members are the face contact, can bear big load, but conventional piston compressor kinematic chain is longer, kinematic pair is more, and the size error of each member and the gap in the kinematic pair make motion produce bigger cumulative error, and mechanical efficiency is reduced.
At present, many fields desired compression machine air displacement is very little, and inhale, the exhaust pressure difference is also little, but require compressor means light and handy, the mechanical efficiency height, low cost of manufacture, conventional piston compressor difficulty satisfies these requirements, needs research and development new structure compressor.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of novel plane motion piston compressor, shortens the compressor kinematic chain, improves mechanical efficiency, reduces manufacture cost.
The present invention solves the problems of the technologies described above with following technological scheme:
This plane motion piston compressor connecting rod and piston are an integral body, and piston and cylinder operation minute surface contact segment are sphere.
Piston sphere and cylinder operation minute surface are Spielpassung.
Plane motion piston compressor of the present invention reduces a movable part and a kinematic pair than conventional piston compressor motion, the compressor kinematic chain shortens, motion is lighter and handier, the motion cumulative error that is produced by each Scantlings sum of errors pair clearance also reduces, and each member requirement on machining accuracy is relatively low.Plane motion Structure of Piston Compressor of the present invention is simple, the mechanical efficiency height, and low cost of manufacture is applicable to fields such as mini air compressor, refrigeration compressor.
Description of drawings
Fig. 1 is the structural representation of plane motion piston compressor of the present invention.
Among the figure: 1-Aspirating valves, 2-outlet valve, 3-valve plate, 4-end cap, 5-plane motion piston, 6-cylinder, 7-bent axle, 8-crankcase.
Embodiment
Compressor shown in Figure 1 is compared difference with the conventional piston compressor and is: connecting rod and piston are an integral body, and piston 5 is sphere with cylinder 6 work minute surface contact segments.The piston spherical diameter is consistent with cylinder operation minute surface diameter base dimension, and it cooperates is Spielpassung.Compressor piston sphere centre shown in Figure 1 does reciprocating linear motion, and the relative cylinder of piston also rotates simultaneously, therefore piston among Fig. 15 is referred to as the plane motion piston, and Fig. 1 structure compressor is referred to as the plane motion piston compressor.
On mechanics, compressor shown in Figure 1 only has 2 movable parts: piston 5 and bent axle 7, planar mechanism two independent components have 6 degrees of freedom.The compressor kinematic pair only has 3 among Fig. 1: crankcase 8 and bent axle 7, bent axle 7 and piston 5, piston 5 and cylinder 6.Crankcase 8 contacts by face with piston 5 kinematic pair with bent axle 7, bent axle 7, is lower pair, and 2 lower pairs are introduced 4 constraints altogether.Piston 5 and cylinder 6 contact by line, are higher pair, and 1 higher pair is introduced 1 constraint.The degrees of freedom of compressor means shown in Figure 1 just in time is 1, and therefore when bent axle among Fig. 1 rotated with driving machine, piston can move and have definite characteristics of motion.
Plane motion piston compressor working principle of the present invention is: bent axle 7 rotations drive piston 5 motions, and the working chamber volume that piston 5, cylinder 6 and valve plate 3 constitute constantly changes with piston 5 motions, thereby realize suction, compression and the discharge of gas.Piston 5 by top dead center when lower dead center is moved, the volume of active chamber inside clearance before this gas expands, pressure reduces, when gas pressure is reduced to a little less than pressure of inspiration(Pi), the Aspirating valves 1 that is contained on the piston 5 is opened, extraneous gas enters crankcase by the air-breathing aperture on the crankcase 8, enters active chamber by Aspirating valves 1 again.When piston reached lower dead center, Aspirating valves 1 cut out, air-breathing termination.Piston by lower dead center when top dead center moves, working chamber volume diminishes, gas pressure increases, when gas pressure increases to a little more than exhaust pressure, the outlet valve 2 that is contained on the valve plate 3 is opened, the work intracavity gas enters the exhaust cavity that is made of valve plate 3 and end cap 4 by outlet valve 2, discharges by the vent ports on the end cap 4 again.When piston reached top dead center, outlet valve 2 was closed, and exhaust stops.
Plane motion piston compressor kinematic chain of the present invention is short, and mechanism's movable part and kinematic pair are few, and be simple in structure, mechanical efficiency height, low cost of manufacture.It can also be seen that from Fig. 1 simultaneously: each air-flow path area can be designed as higher value to compressor from air-breathing aperture to vent ports, and the compressor gas flow losses are less; Compressor crankcase and discharge chamber volume are bigger, and the amplitude of gas is also less.It is with the obvious advantage that the plane motion piston compressor is compared the conventional piston compressor in many aspects, but because plane motion piston compressor piston contacts by line with cylinder, therefore can not bear big load.Plane motion piston compressor of the present invention is applicable to mini air compressor, the less compressor field of refrigeration compressor constant power.
Claims (2)
1. a plane motion piston compressor is characterized in that this plane motion piston compressor connecting rod and piston are an integral body, and piston and cylinder operation minute surface contact segment are sphere.
2. plane motion piston compressor as claimed in claim 1 is characterized in that piston sphere and cylinder operation minute surface are Spielpassung.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110158757XA CN102230462A (en) | 2011-06-14 | 2011-06-14 | Plane motion piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110158757XA CN102230462A (en) | 2011-06-14 | 2011-06-14 | Plane motion piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102230462A true CN102230462A (en) | 2011-11-02 |
Family
ID=44843059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110158757XA Pending CN102230462A (en) | 2011-06-14 | 2011-06-14 | Plane motion piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102230462A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB683852A (en) * | 1949-12-08 | 1952-12-03 | S E P A Soc D Expl Des Procede | Improvements in compressors, particularly for refrigerating purposes |
| JPS5669477A (en) * | 1979-11-12 | 1981-06-10 | Hayashi Kikai Sekkei Jimusho:Kk | Air compressor |
| CN2045029U (en) * | 1988-04-15 | 1989-09-27 | 方明 | Miniature reciprocating type dual-purpose ball piston pump |
| CN1361357A (en) * | 2002-01-17 | 2002-07-31 | 周芝山 | Piston unit of air compressor |
| CN1605754A (en) * | 2003-10-10 | 2005-04-13 | 日立家用电器公司 | Reciprocating compressor and its manufacturing method |
-
2011
- 2011-06-14 CN CN201110158757XA patent/CN102230462A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB683852A (en) * | 1949-12-08 | 1952-12-03 | S E P A Soc D Expl Des Procede | Improvements in compressors, particularly for refrigerating purposes |
| JPS5669477A (en) * | 1979-11-12 | 1981-06-10 | Hayashi Kikai Sekkei Jimusho:Kk | Air compressor |
| CN2045029U (en) * | 1988-04-15 | 1989-09-27 | 方明 | Miniature reciprocating type dual-purpose ball piston pump |
| CN1361357A (en) * | 2002-01-17 | 2002-07-31 | 周芝山 | Piston unit of air compressor |
| CN1605754A (en) * | 2003-10-10 | 2005-04-13 | 日立家用电器公司 | Reciprocating compressor and its manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| 机械基础编写小组: "《机械基础》", 31 December 1980 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111102 |