CN1181302C - Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device - Google Patents
Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device Download PDFInfo
- Publication number
- CN1181302C CN1181302C CNB021539154A CN02153915A CN1181302C CN 1181302 C CN1181302 C CN 1181302C CN B021539154 A CNB021539154 A CN B021539154A CN 02153915 A CN02153915 A CN 02153915A CN 1181302 C CN1181302 C CN 1181302C
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- CN
- China
- Prior art keywords
- swing
- expansion
- rotor
- compression
- high pressure
- 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.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The present invention relates to a carbon dioxide trans-critical refrigeration circulation swing rotor type expansion energy saving device which is composed of a cylinder body, swing rotors, an eccentric wheel shaft, a base, an electromagnetic valve, etc. The expansion energy saving device is mainly characterized in that pistons in an air cylinder are designed into swing rotors, one swing rotor is arranged between a main bearing and a middle spacer plate, and the other swing rotor is arranged between the middle spacer plate and an auxiliary bearing; a rolling ring is sheathed on an eccentric wheel of a main shaft, swing rods can freely slide up and down in a cylindrical guide rail and swing left and right along with the guide rail; since the swing rod of each piston and the rolling ring form an integral body, the swing rod of each piston and the rolling ring do not have the problems of sealing and lubrication so as to reduce leakage paths and eliminate friction loss between the rolling ring and the swing rods; and the swing rods can be used for supporting both sides, so that the swing rods can bear large pressure differences so as to reduce the internal leakage of the energy saving device and enhance the efficiency of the energy saving device. The recycled power is about 20% of the power consumption of a compressor, so that the vacuum tube solar bathroom has double effects of environmental protection and energy saving.
Description
Technical field
The invention belongs to the energy saver in refrigeration air-conditioner and the heating plant equipment.
Background technology
Obtained common recognition though develop the research of carbon dioxide expanded machine, studies show that the COP (coefficient of performance) of carbon dioxide system is very sensitive to the efficient of carbon dioxide expanded machine, and have only CO
2The desired expansion merit that system obtains more than 60% just may be above the Energy Efficiency Ratio of traditional working substance system.Key issue is how to improve efficiency of expander, obtains higher recovery merit.Multi-form decompressor mechanical efficiency difference is because CO
2System's expansion process pressure height, and pressure reduction is big before and after expanding.Therefore control is leaked, and reducing to rub is the fundamental way that improves the decompressor mechanical efficiency.In rotor-type expander, the slide plate of rolling piston is under high pressure yielding, cause the gap to increase leakage rate is increased, and the friction of slide plate in chute is very big, can influence the organic efficiency of expansion work.Therefore be necessary the more high efficiency rotor-type expander of design, select novel piston.
Summary of the invention
The purpose of this invention is to provide a kind of CO of directly applying to
2Stride in the critical cycle system and the energy saver with higher mechanical efficiency, the effective COP of raising system in the refrigeration of reality, heat-pump apparatus makes CO
2Decompressor has more the value of practical application.
Structural principle of the present invention is shown in accompanying drawing 1, accompanying drawing 2.CO 2 cross-critical kind of refrigeration cycle swing-rotor type expansion energy-saving appliance has casing 1, base 2, camshaft 3, expansion cylinder body 4, compressed gas cylinder body 10, expansion swing-rotor 5, compression swing-rotor 9, major and minor bearing 6,8, central dividing plate 7, expansion cylinder air inlet pipe 11, compression cylinder air intake duct 12, magnetic valve 13, gas-liquid separator 14, heat insulation layer 15, expansion cylinder guide rail 16, compression cylinder guide rail 17, expansion cylinder exhaust outlet 18, compression cylinder air bleeding valve 19, compression cylinder exhaust outlet 20 etc.A total inner chamber is formed in sealing between casing 1 and the base 2, by major and minor bearing 6,8 and central dividing plate 7 total inner chamber is separated, and forms two high pressure chests and two low-pressure cavity.Be low-pressure cavity 21 between casing 1 and the base bearing 6, be expansion high pressure chest 22 between base bearing 6 and the central dividing plate 7, be compression high pressure chest 23 between central dividing plate 7 and the supplementary bearing 8, it between supplementary bearing 8 and the base 2 the secondary chamber 24 of low pressure, the secondary chamber 24 of low-pressure cavity 21 and low pressure is connected by camshaft 3, and expansion high pressure chest 22 is coaxial with compression high pressure chest 23.Form expansion swing-rotor 5 and compression swing-rotor 9 by rolling ring and fork.Expansion swing-rotor 5 places the expansion high pressure chest 22 between base bearing 6 and the central dividing plate 7, and compression swing-rotor 9 places the compression high pressure chest 23 between central dividing plate 7 and the supplementary bearing 8, rolls ring set on the eccentric wheel of camshaft 3.Fork slides up and down in cylindrical expansion cylinder guide rail 16 and compression cylinder guide rail 17, and swings with guide rail.Expansion swing-rotor 5 is with the high-pressure chamber separated into two parts between base bearing 6 and the central dividing plate 7, one side sucks the high pressure-temperature fluid from expansion cylinder air inlet pipe 11, and in expansion high pressure chest 22, expand, promote to roll ring and roll along cylinder surfaces, promptly promote 5 motions of expansion swing-rotor.Opposite side carries out exhaust.Because fork is an one with rolling ring, so swing-rotor is around the axle center translation.Because expansion swing-rotor 5 drives camshaft 3 rotations, thus 9 motions of the compression swing-rotor in the drive compression high pressure chest 23.Compression swing-rotor 9 is with the compression high pressure chest 23 between central dividing plate 7 and the supplementary bearing 8 also separated into two parts, and a side sucks the gas of low-temp low-pressure, and opposite side compresses the gas that sucks.Compression swing-rotor 9 is done identical motion with expansion swing-rotor 5.For avoiding conducting heat between two cylinders, heat insulation layer 15 is arranged between central dividing plate 7, heat-insulating material is a polytetrafluoroethylene (PTFE).
Beneficial effect of the present invention is: because the fork of piston is an one with rolling ring, the two does not exist sealing and lubrication problem, reduced leakage path, eliminated the friction loss of rolling between ring and fork, and fork becomes the support of both sides, can bear bigger pressure differential, guide rail can rotate again simultaneously, has reduced the side force of fork.Therefore at CO
2In the expansion process, under high pressure, big pressure reduction condition, the distortion of piston is little, and leakage rate reduces, and mechanical efficiency is improved.
Description of drawings
Fig. 1 is CO
2Stride the structural representation of critical refrigeration cycle swing-rotor type expansion energy-saving appliance.Fig. 2 is the E-E sectional structure chart among Fig. 1.Fig. 3 is the CO of band expansion energy-saving appliance
2Stride the critical cycle system flow chart.
The figure number detail list
| Sequence number | Title | Sequence number | Title |
| 1 | | 16 | The expansion cylinder guide rail |
| 2 | | 17 | The compression |
| 3 | Camshaft | 18 | The expansion |
| 4 | The | 19 | The compression cylinder |
| 5 | The expansion swing- | 20 | The compression cylinder exhaust outlet |
| 6 | Base bearing | 21 | Low-pressure cavity |
| 7 | Central dividing plate | 22 | The expansion high pressure chest |
| 8 | Supplementary bearing | 23 | The compression |
| 9 | The compression swing-rotor | 24 | The secondary chamber of |
| 10 | The compressed | 25 | |
| 11 | The expansion cylinder | 26 | |
| 12 | The compression cylinder | 27 | Gas cooler |
| 13 | Magnetic valve | ||
| 14 | Gas-liquid separator | ||
| 15 | Heat insulation layer |
The specific embodiment
The present invention on the layout of system as the frame of broken lines part in the accompanying drawing 3.
During installation, expansion cylinder air inlet pipe pipe 11 of the present invention is linked to each other with the outlet of gas cooler 27, the inlet of expansion cylinder exhaust outlet 18 with evaporimeter 26 linked to each other, and the inlet of compression cylinder is a gas-liquid separator, separate to come the gas of flash-pot, the exhaust of compression cylinder exit gas and main compressor is mixed, enters gas cooler.
During work, supercritical, high pressure CO 2 fluid (pressure is about 10Mpa usually) is entered in the expansion high pressure chest 22 by expansion cylinder air inlet pipe 11, this moment, magnetic valve 13 was in opening, high-pressure fluid promotes 5 rotations of expansion swing-rotor after entering cylinder body, and driving camshaft 3 is pressed the rotation of direction shown in the accompanying drawing 2.When rotating to the angle of end, signal is sent in circuit control makes magnetic valve 13 close, and stops air inlet, and fluid begins spontaneous expansion.In this expansion process, because the effect of pressure reduction, high-pressure carbon dioxide continues to promote camshaft and swing-rotor rotates, when swing-rotor forwards cylinder body exhaust outlet position to, pressure is reduced to pressure at expulsion (30～40MPa), high-pressure carbon dioxide becomes gas-liquid two-phase fluid, is discharged by expansion cylinder exhaust outlet 18, and all above-mentioned rotary parts all rotate a circle.In next circulation, magnetic valve is opened and is made high-pressure carbon dioxide enter cylinder body by air inlet pipe once more, and this moment, cylinder was divided into two chambeies, and a side air inlet is expanded, a side exhaust.Meanwhile, the steam of low pressure enters compression cylinder, when rotating a circle, whole compression cylinder all is filled steam, and during next week, cylinder also is divided into two chambeies in rotation, along with camshaft 3 and compression swing-rotor 9 are rotated further, one side volume of cylinder diminishes, and gas is compressed, when reaching design pressure, push air bleeding valve open, compression process is finished in exhaust, and opposite side then carries out air-breathing.Two camshafts and swing-rotor be motion so repeatedly in two cylinders, reaches the purpose of output shaft work.
The present invention is simple in structure, and volume is little, and is in light weight, safe and reliable to operation, can effectively improve the merit retracting device efficient, thereby improve the COP of whole system, reach purpose of energy saving.
Claims (1)
1. CO 2 cross-critical kind of refrigeration cycle swing-rotor type expansion energy-saving appliance, has casing (1), base (2), camshaft (3), expansion cylinder body (4), compressed gas cylinder body (10), expansion swing-rotor (5), compression swing-rotor (9), main, supplementary bearing (6,8), central dividing plate (7), expansion cylinder air inlet pipe (11), compression cylinder air intake duct (12), magnetic valve (13), gas-liquid separator (14), heat insulation layer (15), expansion cylinder guide rail (16), compression cylinder guide rail (17), expansion cylinder exhaust outlet (18), compression cylinder air bleeding valve (19), compression cylinder exhaust outlet (20) etc., it is characterized in that sealing between casing (1) and the base (2), form a total inner chamber, by the master, supplementary bearing (6,8) and central dividing plate (7) total inner chamber is separated, form two high pressure chests and two low-pressure cavity, be low-pressure cavity (21) between casing (1) and the base bearing (6), be expansion high pressure chest 22 between base bearing (6) and the central dividing plate (7), be compression high pressure chest (23) between central dividing plate (7) and the supplementary bearing (8), it between supplementary bearing (8) and the base (2) the secondary chamber (24) of low pressure, the secondary chamber of low-pressure cavity (21) and low pressure (24) is connected by camshaft (3), expansion high pressure chest (22) is coaxial with compression high pressure chest (23), form expansion swing-rotor (5) and compression swing-rotor (9) by rolling ring and fork, roll ring set on the eccentric wheel of camshaft (3), swing-rotor is around the axle center translation, fork slides up and down in cylindrical expansion cylinder guide rail (16) and compression cylinder guide rail (17), and swing with guide rail, expansion swing-rotor (5) is with expansion high pressure chest (22) separated into two parts between base bearing (6) and the central dividing plate (7), one side sucks the high pressure-temperature fluid from expansion cylinder air inlet pipe (11), in expansion high pressure chest (22), expand, promotion is rolled ring and is rolled along cylinder surfaces, opposite side carries out exhaust, expansion swing-rotor (5) drives camshaft (3) rotation, thereby the motion of the compression swing-rotor (9) in the drive compression high pressure chest (23), compression swing-rotor (9) is with the compression high pressure chest (23) between central dividing plate (7) and the supplementary bearing (8) also separated into two parts, one side sucks the gas of low-temp low-pressure, and opposite side compresses the gas that sucks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021539154A CN1181302C (en) | 2002-12-05 | 2002-12-05 | Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021539154A CN1181302C (en) | 2002-12-05 | 2002-12-05 | Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1419088A CN1419088A (en) | 2003-05-21 |
| CN1181302C true CN1181302C (en) | 2004-12-22 |
Family
ID=4752400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021539154A Expired - Fee Related CN1181302C (en) | 2002-12-05 | 2002-12-05 | Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1181302C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275497B (en) * | 2014-07-07 | 2018-02-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Expanding machine |
| WO2016050005A1 (en) * | 2014-09-29 | 2016-04-07 | 摩尔动力(北京)技术股份有限公司 | Sliding and swing mechanism |
-
2002
- 2002-12-05 CN CNB021539154A patent/CN1181302C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1419088A (en) | 2003-05-21 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041222 Termination date: 20101205 |