CN109779878B - Piston compressor without crank-link mechanism - Google Patents
Piston compressor without crank-link mechanism Download PDFInfo
- Publication number
- CN109779878B CN109779878B CN201910200838.8A CN201910200838A CN109779878B CN 109779878 B CN109779878 B CN 109779878B CN 201910200838 A CN201910200838 A CN 201910200838A CN 109779878 B CN109779878 B CN 109779878B
- Authority
- CN
- China
- Prior art keywords
- piston
- stroke
- curved groove
- inner ring
- spring
- 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
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000005381 potential energy Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
The invention discloses a piston type compressor without a crank-link mechanism, and belongs to the field of mechanical engineering. A piston compressor without crank-link mechanism is composed of cylinder, piston (with curved slot), internal ring, mandrel, return spring and air inlet and outlet system. The invention utilizes the pushing stroke of the curved groove ball bearing curved groove to push the piston to move upwards to compress the exhaust gas and compress the spring, and the return stroke utilizes the elastic potential energy of the spring to pull the piston downwards to complete the air intake stroke. Compared with a compressor formed by a traditional crank-link mechanism, the piston compressor without the crank-link mechanism disclosed by the invention has the following advantages: 1. the moving parts are all axisymmetric rotary parts, and the structure is simple; 2. only the rotary motion and the reciprocating motion are straight, so that the noise is low; 3. the required parts are few, the part processing requirement is low, and the manufacturing is easy.
Description
Technical Field
The invention relates to a positive displacement compressor, and belongs to the field of mechanical engineering. In particular to a piston compressor without a crank-link mechanism.
Background
Compressors are widely used in industrial production and people's life, with reciprocating piston compressor applications occupying a significant proportion. The piston compressor mainly comprises a machine body, a crank, a connecting rod, a piston group, a valve and the like. The reciprocating piston compressor utilizes the piston to make reciprocating motion in the cylinder, continuously changes the volume of the piston, and when the volume is increased, the cylinder is used for air intake, and when the volume is reduced, the compression and the exhaust are completed. The reciprocating motion of the piston is converted into reciprocating linear motion by means of a crank connecting rod mechanism, and the electric energy is converted into pressure energy of gas. The crank is one of the main components of the piston compressor, and its main function is to change the rotational motion of the motor into the reciprocating linear motion of the piston through the connecting rod. The crank has a complex structure and large volume, is difficult to realize complete dynamic and static balance, has high material requirements and has high processing difficulty; the connecting rod is composed of a rod body, a connecting rod small-end bushing, a connecting rod big-end bearing bush, a connecting rod bolt and the like. The connecting rod is a connecting piece between the crank and the piston, converts the rotary motion of the crank into the reciprocating motion of the piston, and transmits power to the piston to do work on gas. The crank-connecting rod mechanism has complex stress and motion state, heavy machine, large vibration during operation, complex inertia effect and noise, and is an ineffective problem in the compressor industry.
In order to overcome the defects of a reciprocating piston compressor based on a crank and a connecting rod mechanism, the invention discloses a reciprocating piston compressor without a crank connecting rod mechanism, which is realized by utilizing a retainer-free curved groove ball bearing (patent application number: CN 201910024162.1) to convert rotary motion into reciprocating linear motion. A reciprocating piston compressor without crank-link mechanism is composed of cylinder, piston (with curved slot), internal ring, core axle, return spring and air inlet-exhaust system. The piston is pushed to move upwards to compress and exhaust by using the pushing stroke of the retainer-free curved groove ball bearing curved groove, the spring is compressed, and the piston is pulled downwards by using the elastic potential energy of the spring by the returning stroke, so that the air intake stroke is completed. The moving parts of the reciprocating piston compressor without the crank-link mechanism disclosed by the invention are all axisymmetric rotary parts, so that various defects of the crank-link mechanism can be overcome.
Disclosure of Invention
The reciprocating piston compressor without crank-link mechanism can realize the function of reciprocating motion with larger swing amplitude by using the retainer-free curved groove ball bearing. The invention fixes a square column in the piston, restricts the piston and the outer ring corresponding to the bearing to rotate, so that the piston can only do reciprocating rectilinear motion, and forms the reciprocating stroke required by air suction and compression. The compression exhaust stroke is completed by the pushing stroke of the curved groove; the suction stroke is completed by installing a spring at the lower end of the square column, compressing the spring during the ascending pushing stroke of the curved groove, so that the spring stores elastic potential energy, and after the piston reaches the top end, the piston, namely the outer ring of the bearing, is pulled back to the valley bottom during the descending and returning stroke of the curved groove. The technical scheme for realizing the aim of the invention is as follows:
a piston compressor without crank-link mechanism is composed of a spring 1, a transmission gear 2, a motor 3, a cylinder 4, a piston 5, an inner ring 6, a square column 7, an exhaust valve 8, an intake valve 9, a bearing 10, a mandrel 11, steel balls 12 and a frame 13, and is characterized in that: the inside of the piston 5 is provided with a curved groove with the same period and the same swing amplitude as those of the inner ring 6, and a square column 7 is arranged at the center of the piston 5;
the inner ring 6 is arranged on the mandrel 11 through a pair of bearings, rotates around the mandrel, and the lower end of the inner ring 6 is connected with a large gear of the transmission gear through a key so that the inner ring 6 rotates under the drive of the motor 3;
the lower part of the mandrel 11 is fixedly connected with the frame 13, a square through hole is arranged in the center, and the square column 7 fixed at the top end of the piston 5 is in movable fit with the square through hole;
the lower end of the square column 7 is provided with a spring 1, the spring 1 is compressed by the pushing stroke of the curved groove during the compression and exhaust stroke, the elastic potential energy is stored in a compressed mode during the process that the piston 5 ascends to the top, and the spring 1 utilizes the stored elastic energy to pull the piston back to the valley bottom of the curved groove during the return stroke of the curved groove;
the square column 7 passes through a square hole of the mandrel 11 fixed on the frame 13, so that the piston 5 fixed on the top end of the square column cannot rotate and can only do reciprocating motion;
the cycle period of the curved groove in the piston 5 and the curved groove on the inner ring 6 is more than 2;
the pushing stroke and the returning stroke of the curve of the reciprocating motion of the curved grooves of the piston 5 and the inner ring 6 have 2 forms, one is that the curve shapes of the pushing stroke and the returning stroke take the center of the vertex as the axis to form a bilateral symmetry shape; secondly, the curve shapes of the pushing stroke and the returning stroke are asymmetric;
the end surfaces of the cylinder 4 and the piston 5 are 2 types, namely a round end surface and a non-round end surface; the cylinder 4 and the piston 5 with non-circular end surfaces, the end surfaces of the square column 7 have 2 forms, one is circular, and the other is square;
the spring 1 is mounted in 2 forms, one of which is mounted outside the effective working volume between the cylinder 4 and the piston 5, which is the lower end of the square column 7 fixed to the piston 5, and the other of which is mounted on top of the piston 5, which is the effective working volume between the cylinder 4 and the piston 5.
Compared with a compressor formed by a traditional crank-link mechanism, the piston compressor without the crank-link mechanism disclosed by the invention has the following advantages:
1. the moving parts are all axisymmetric rotary parts, and the structure is simple;
2. only the rotary motion and the reciprocating motion are straight, so that the noise is low;
3. the required parts are few, the part processing requirement is low, and the manufacturing is easy.
Drawings
Fig. 1 is a schematic diagram of a reciprocating piston compressor without crank mechanism:
FIG. 2 is a schematic view showing the structure and development of the piston 5 and the square column 7;
the legend marks in the figures are respectively indicated as follows:
1-spring, 2-transmission gear, 3-motor, 4-cylinder, 5-piston, 6-inner ring, 7-square column, 8-exhaust valve, 9-air inlet valve, 10-bearing, 11-mandrel, 12-steel ball and 13-frame
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings. As shown in fig. 1 and 2, the reciprocating piston compressor without crank-link mechanism of the present invention is composed of a spring 1, a driving gear 2, a motor 3, a cylinder 4, a piston 5, an inner ring 6, a square column 7, an exhaust valve 8, an intake valve 9, a bearing 10, a mandrel 11, a steel ball 12 and a frame 13. The inside of the piston 5 is provided with a curved groove with the same period and the same swing amplitude as the inner ring 6, and a square column 7 is arranged at the center of the piston 5; the inner ring 6 is arranged on the mandrel 11 through a pair of bearings, rotates around the mandrel, and the lower end of the inner ring 6 is connected with a large gear of the transmission gear through a key so that the inner ring 6 rotates under the drive of the motor 3; the lower part of the mandrel 11 is fixedly connected with the frame 13, a square through hole is arranged in the center, and a square column 7 fixed at the top end of the piston 5 is in movable fit with the square through hole; the lower end of the square column 7 is provided with a spring 1, the spring 1 is compressed and stores elastic potential energy under the action of the rising pushing stroke of the curved groove in the process of rising the top of the piston 5, and when the curved groove descends and returns to the return stroke, the spring 1 stretches by utilizing the stored elastic energy to pull the piston back to the valley bottom of the curved groove; the square column 7 passes through a square hole fixed on the frame 13, so that the piston 5 fixed on the top end of the square column can not rotate and can only move up and down, and the suction and compression strokes are completed; for rapid inhalation, the curved groove curve push path and the return path of the invention are designed into asymmetric shapes so as to increase inhalation time.
Claims (1)
1. A piston compressor without crank-link mechanism is composed of a spring (1), a transmission gear (2), a motor (3), a cylinder (4), a piston (5), an inner ring (6), a square column (7), an exhaust valve (8), an air inlet valve (9), a bearing (10), a mandrel (11), steel balls (12) and a frame (13),
the method is characterized in that: the piston (5) is internally provided with a curved groove with the same period and equal swing as the inner ring (6); a square column (7) is arranged in the center of the interior of the piston (5);
the inner ring (6) is arranged on the mandrel (11) through a pair of bearings, rotates around the mandrel, and the lower end of the inner ring (6) is connected with a large gear of the transmission gear (2) through a key so that the inner ring (6) rotates around the mandrel (11) under the drive of the motor (3);
the lower part of the mandrel (11) is fixedly connected with the frame (13), a square through hole is arranged in the center of the mandrel (11), and a square column (7) fixed at the top end of the piston (5) is in movable fit with the square through hole;
the lower end of the square column (7) is provided with a spring (1), the spring (1) is compressed by a curved groove pushing stroke of the piston (5) and the inner ring (6) during a compression and exhaust stroke, elastic potential energy is reserved during the rising process of the piston (5), and the spring 1 utilizes the reserved elastic energy to pull the piston (5) back to the valley bottom of the curved groove during the return stroke of the curved groove;
the square column (7) passes through a square hole of a mandrel (11) fixed on the frame (13), so that the piston (5) fixed on the top end of the square column cannot rotate and can only do reciprocating motion;
the cycle period of the curved groove in the piston (5) and the curved groove on the inner ring (6) is 2 or more;
the pushing stroke and the returning stroke of the curve of the reciprocating motion of the curved groove of the piston (5) and the inner ring (6) are in 2 forms, one is that the curve shapes of the pushing stroke and the returning stroke take the center of the vertex as the axis to form a bilateral symmetry shape; secondly, the curve shapes of the pushing stroke and the returning stroke are asymmetric;
the end faces of the cylinder (4) and the piston (5) are 2 types, one is a round end face, and the other is a non-round end face; the cylinder (4) with non-circular end face and the piston (5), the end face of the square column (7) has 2 forms, one is circular, and the other is square;
the spring (1) is arranged at 2 modes, one is arranged at the lower end of a square column (11) fixed on the piston (5), namely outside the effective working volume between the cylinder (4) and the piston (5), and the other is arranged at the top of the piston (5), namely inside the effective working volume between the cylinder (4) and the piston (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910200838.8A CN109779878B (en) | 2019-03-17 | 2019-03-17 | Piston compressor without crank-link mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910200838.8A CN109779878B (en) | 2019-03-17 | 2019-03-17 | Piston compressor without crank-link mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109779878A CN109779878A (en) | 2019-05-21 |
| CN109779878B true CN109779878B (en) | 2024-03-01 |
Family
ID=66488644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910200838.8A Active CN109779878B (en) | 2019-03-17 | 2019-03-17 | Piston compressor without crank-link mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109779878B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056624A (en) * | 2019-05-29 | 2019-07-26 | 西北农林科技大学 | A kind of rotary motion and reciprocating linear motion conversion mechanism |
| CN110017210A (en) * | 2019-05-29 | 2019-07-16 | 西北农林科技大学 | A kind of internal combustion engine |
| CN110159427A (en) * | 2019-06-02 | 2019-08-23 | 西北农林科技大学 | A kind of reciprocating piston internal combustion engine |
| CN110219812A (en) * | 2019-07-22 | 2019-09-10 | 西北农林科技大学 | A kind of duplex cylinder compressor |
| CN113719346B (en) * | 2021-08-25 | 2023-01-24 | 杨岩顺 | Engine reciprocating motion part has last residual kinetic energy recycle device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5442913A (en) * | 1992-12-29 | 1995-08-22 | Goldstar Co., Ltd. | Stirling cycle system driving device |
| WO1995033927A1 (en) * | 1994-06-03 | 1995-12-14 | Willibald Hiemer | Supercharger for internal-combustion engines |
| WO2002052125A1 (en) * | 2000-12-22 | 2002-07-04 | Hruskovic Svetozar | Rotary piston machine |
| CN2606199Y (en) * | 2003-03-09 | 2004-03-10 | 罗民权 | Compressor |
| CN104279139A (en) * | 2014-03-03 | 2015-01-14 | 曾庆仁 | Crankless piston type air compressor |
| CN109340078A (en) * | 2018-11-19 | 2019-02-15 | 西安交通大学 | A kind of double opposed pistons compressor arrangements |
| CN209761660U (en) * | 2019-03-17 | 2019-12-10 | 西北农林科技大学 | piston compressor without crank-connecting rod mechanism |
-
2019
- 2019-03-17 CN CN201910200838.8A patent/CN109779878B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5442913A (en) * | 1992-12-29 | 1995-08-22 | Goldstar Co., Ltd. | Stirling cycle system driving device |
| WO1995033927A1 (en) * | 1994-06-03 | 1995-12-14 | Willibald Hiemer | Supercharger for internal-combustion engines |
| WO2002052125A1 (en) * | 2000-12-22 | 2002-07-04 | Hruskovic Svetozar | Rotary piston machine |
| CN2606199Y (en) * | 2003-03-09 | 2004-03-10 | 罗民权 | Compressor |
| CN104279139A (en) * | 2014-03-03 | 2015-01-14 | 曾庆仁 | Crankless piston type air compressor |
| CN109340078A (en) * | 2018-11-19 | 2019-02-15 | 西安交通大学 | A kind of double opposed pistons compressor arrangements |
| CN209761660U (en) * | 2019-03-17 | 2019-12-10 | 西北农林科技大学 | piston compressor without crank-connecting rod mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 新型摇摆活塞式无油润滑空气压缩机的研究;耿爱农;耿葵花;李辛沫;陈君立;阮勤江;;中国机械工程(18);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109779878A (en) | 2019-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109779878B (en) | Piston compressor without crank-link mechanism | |
| CN109707509B (en) | Reciprocating piston type internal combustion engine without crank-link mechanism | |
| CN107110021B (en) | Novel pneumatic transmission device | |
| CN203035491U (en) | Conchoid air compressor | |
| CN209761660U (en) | piston compressor without crank-connecting rod mechanism | |
| CN202832781U (en) | Horizontally-opposed two-stage piston engine horizontally arranged | |
| CN214273878U (en) | Linear orbital ring for linear piston compressor | |
| CN101105223A (en) | Crank-connecting rod mechanism | |
| CN104179658A (en) | Low-cost large-inflation quantity multi-cylinder body air pump | |
| CN201110360Y (en) | Novel crank connecting-rod mechanism | |
| CN210317811U (en) | Double-cylinder compressor | |
| CN105351197A (en) | Rotary piston type compressor | |
| CN100357597C (en) | Gear volume-changing reciprocating compressor and pump | |
| CN2606199Y (en) | Compressor | |
| CN115434887A (en) | Elastic driving piston pump | |
| CN201277161Y (en) | Multi-cylinder oil-free compressor of refrigerant reclaiming machine | |
| CN2291517Y (en) | Oscillating-piston compressor | |
| CN113847227A (en) | Reciprocating piston type compressor | |
| CN2363079Y (en) | Compressor without oil lubrication | |
| CN204738925U (en) | Groups of stars' symmetry oil free compressor | |
| CN110219812A (en) | A kind of duplex cylinder compressor | |
| CN105756713A (en) | Runner-crank linear piston speed-changing force applying mechanism | |
| CN202914138U (en) | Gas power machine | |
| CN203362516U (en) | Rotary compression device | |
| CN203130411U (en) | Vacuum air pump and window cleaner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |