CN101354199B - Heating power expansion apparatus capable of automatically adjusting for refrigeration system - Google Patents
Heating power expansion apparatus capable of automatically adjusting for refrigeration system Download PDFInfo
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- CN101354199B CN101354199B CN200810079226XA CN200810079226A CN101354199B CN 101354199 B CN101354199 B CN 101354199B CN 200810079226X A CN200810079226X A CN 200810079226XA CN 200810079226 A CN200810079226 A CN 200810079226A CN 101354199 B CN101354199 B CN 101354199B
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Abstract
The invention relates to an automatically-adjustable heat expansion device used in refrigeration systems which pertains to the field of refrigeration technology and is used for solving the problem that a vortex tube goes against automatic control when in use by a refrigeration system. The technical proposal of the invention comprises: the heat expansion device of the invention is composed of a heat expansion part and an auto-adjusting part; the heat expansion part is a vortex tube, a hot end tube of which is provided with a heating valve; the auto-adjusting part comprises a spring, an adjusting head, a membrane, a capillary tube and a temperature sensing bulb, wherein, the adjusting head is tubular, one end of which is communicated with an end wall of the hot end tube of the vortex tube while the other end is butt-joined with the membrane and an end port of the capillary tube in sequence; the capillary tube is communicated with the temperature sensing bulb; a mandril is arranged in the adjusting head and two ends of the mandril are respectively connected with the membrane and the tail end of the heating valve under the action of spring force. The heat expansion device of the invention is designed for the use in the refrigeration systems, can control the cool air flow and the temperature of the vortex tube by automatically adjusting the heating valve, thus regulating degree of superheat of the refrigeration systems for the stable operation of the systems and improving the automatic control level of the refrigeration systems.
Description
Technical field
The present invention relates to a kind of expansion gear of refrigeration system, particularly can regulate the thermal valve aperture automatically, belong to the Refrigeration ﹠ Air-Conditioning technical field to obtain best refrigeration effect or to heat the eddy current tubular type heating power expansion apparatus of effect.
Background technology
Vortex tube, turbo-expander and choke valve all are to obtain the device of cold by working medium is expanded.Choke valve is fluid with certain flow rate produces the decompressional expansion phenomenon under the effect of local resistance a simple mechanism, and the inlet condition of control working medium can produce refrigeration effect.Have the frictional resistance loss during throttling, so entropy must increase after the throttling, but the enthalpy before and after the throttling is constant.Choke valve is simple in structure, easy to adjust, uses comparatively extensive in engineering reality.Turbo-expander is that power conversion is carried out in the variation of speed when utilizing working medium to flow, and is also referred to as the velocity profile decompressor.It both can be used for the liquefying refrigerating of empty branch field, air-conditioning equipment, low temperature environment simulation and hydrogen, helium, can also use as the energy-recovering machine tool.Vortex tube is a kind of energy separation device simple in structure, is made up of nozzle, minor air cell, cold junction orifice plate, cold and hot two ends pipe and hot junction control valve.Gases at high pressure enter nozzle by air inlet pipe during work, after expansion is quickened in nozzle, tangentially enter the minor air cell with very high speed, air-flow forms the high speed vortex in the minor air cell, because the pressure differential between hot junction control valve and the cold junction orifice plate, central area in vortex tube forms reflux gas, through being separated into the unequal two parts air-flow of stagnation temperature after the eddy current conversion.Wherein, the reflux airflow that is in the centre is flowed out by the cold junction orifice plate, temperature reduces, form cold airflow, and the air-flow that is in outer position flows out from the hot junction through the hot junction control valve, temperature raises, form thermal current, Here it is so-called " eddy current effect " or " blue gram effect ", and vortex tube has obtained application at minitype air conditioner on the portable air adjusting device in recent years.
By thermodynamics basic law and in conjunction with example vortex tube, turbo-expander and choke valve expansion process are analyzed, relevant efficiency value data are referring to table 1:
Table 1 compressed air is through the various efficiency values of different expansion processes
The result shows in the table: these three kinds obtain the device of cold by expansion, the irreversible loss maximum of choke valve, and vortex tube takes second place, the turbo-expander minimum.Under the same terms, the efficient of vortex tube is far above choke valve, and along with the rising of inlet temperature, the loss of vortex tube available energy obviously reduces, and can consider to replace turbo-expander with vortex tube this moment.In addition, compare with turbo-expander, vortex tube is simple in structure, movement-less part, and maintenance workload is very little, and is stable, economical and practical.
Hot junction control valve (thermal valve) is one of critical piece of vortex tube, regulates the ratio of hot and cold air-flow flow rate by the hot junction control valve, can obtain best refrigeration effect or heat effect.But the hot junction control valve of vortex tube is manual adjustments at present, its structure is for being provided with a regulating handle that extends to the vortex tube outside in the thermal valve end, reach adjusting thermal valve aperture purpose by rotating regulating handle, this structure is unfavorable for the automatic control of system when being used for refrigerating plant, therefore await improving.
Summary of the invention
The present invention is used to overcome the defective of prior art and provides a kind of can the variation according to actual load to regulate vortex tube thermal valve aperture automatically, thereby makes the employing vortex tube can realize the self-adjustable heating power expansion apparatus that is used for refrigeration system of automatic stabilisation operation according to working conditions change as the refrigeration system of expansion gear.
The alleged problem of the present invention solves with following technical proposals:
A kind of self-adjustable heating power expansion apparatus that is used for refrigeration system, its special feature is: it is grouped into by thermal expansion part and automatic adjusting portion, described thermal expansion partly is a vortex tube, be provided with thermal valve in the hot junction pipe of vortex tube, described automatic adjusting portion branch comprises spring, regulate head, diaphragm, capillary and temperature-sensitive bag, regulating head is tubular body, the one end is communicated with the hot junction pipe end wall of vortex tube, the other end successively with diaphragm, the butt joint of capillary port, capillary is communicated with the temperature-sensitive bag, be provided with push rod in the described adjusting head, its two ends of push rod spring-loaded connect diaphragm and thermal valve tail end respectively.
The above-mentioned self-adjustable heating power expansion apparatus that is used for refrigeration system, set up the initial tension of spring guiding mechanism, described initial tension of spring guiding mechanism is positioned at regulates the head place, it is by adjusting nut, the spring keeper, setscrew nut and clamping screw are formed, the spring keeper is fixed on adjusting nut endoporus middle part, which is provided with centre bore and 6～8 uniform through flow holes, described adjusting head is two sections combining structures, the adjusting nut two ends are connected with two sections adjusting head threads respectively, regulate between head for two sections and leave spring keeper mobile space, described setscrew nut lays respectively at the adjusting nut both sides, the clamping screw connection is also locked two setscrew nuts, described spring is positioned at regulates head, and push rod is positioned at spring center, and both ends of the spring is spacing by the bulge loop of spring keeper and push rod end respectively.
The above-mentioned self-adjustable heating power expansion apparatus that is used for refrigeration system, set up the initial tension of spring guiding mechanism, described initial tension of spring guiding mechanism is positioned at hot junction Guan Chu, it is by adjusting nut, rectifier, setscrew nut and clamping screw are formed, rectifier is fixed on adjusting nut endoporus middle part by dowel, described hot junction pipe is two sections combining structures, the adjusting nut two ends are connected with two sections hot junction gas thread respectively, leave the dowel mobile space between two sections hot junction pipes, setscrew nut lays respectively at the adjusting nut both sides, clamping screw connects and locks two setscrew nuts, and described spring is positioned at the hot junction pipe, and its two ends are spacing by rectifier tail end and thermal valve top respectively.
The above-mentioned self-adjustable heating power expansion apparatus that is used for refrigeration system, uniform 4～8 balancing orifices between described adjusting head and the hot junction pipe.
The above-mentioned self-adjustable heating power expansion apparatus that is used for refrigeration system is provided with sleeve pipe in the described adjusting head, and described push rod is by passing in the sleeve pipe.
The above-mentioned self-adjustable heating power expansion apparatus that is used for refrigeration system, described clamping screw is 4～6, uniform 4～6 arcuation locking screw keyholes on the described setscrew nut.
The present invention is directed to and be unfavorable for the problem of control automatically when vortex tube is used for refrigeration system as heating power expansion apparatus, designed eddy current tubular type heating power expansion apparatus with automatic regulatory function, this device is grouped into by thermal expansion part and automatic adjusting portion, and its thermal expansion section construction is simple, working stability.Temperature-sensitive bag of its adjusting part automatically causes that by experiencing the refrigeration system evaporator outlet temperature internal pressure changes, and then is changed by the displacement drive vortex tube thermal valve aperture of diaphragm, push rod, and changes adjusting cold airflow tolerance according to actual load.The present invention is used for refrigeration system, can come controlled vortex flow pipe cold air flow and temperature by automatic adjusting thermal valve in real time, thereby regulates the degree of superheat of refrigeration system, makes system stable operation, improves the automatic control level of system.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cutaway view (not in scale) of Fig. 1;
Fig. 3 is Fig. 1 C portion partial enlarged view;
Fig. 4 is another embodiment of the present invention structural representation;
Fig. 5 is the B-B cutaway view (not in scale) of Fig. 4;
Fig. 6 is Fig. 1 D portion partial enlarged view;
Fig. 7 setscrew nut schematic diagram.
Label is expressed as follows in the accompanying drawing: 1 vortex tube; 2. cold side outlet; 3. minor air cell; 4. air inlet; 5. manage in the hot junction; 6. thermal valve; 7. hot junction outlet; 8. push rod; 8-1. bulge loops; 9. adjusting head; 10. spring keeper; 10-1. centre bores; 10-2. through flow holes; 11. spring; 12. diaphragm; 13. capillary; 13-1. capillary ports; 14. temperature-sensitive bag; 15. evaporimeter; 16. balancing orifice; 17. sleeve pipe; 18. clamping screw; 19. setscrew nut; 19-1. locking screw keyholes; 20. adjusting nut; 21. sealing; 22. rectifier; 23. dowel.
The specific embodiment
Referring to Fig. 1, the present invention is the heating power expansion apparatus that is used for refrigeration system, this heating power expansion apparatus is grouped into by thermal expansion part and automatic adjusting portion, wherein thermal expansion is partly selected vortex tube 1 for use, and vortex tube is provided with air inlet 4, minor air cell 3, cold side outlet 2, hot junction pipe 5, hot junction outlet 7 and thermal valve, cold side outlet connects the evaporimeter 15 of refrigeration system.Described automatic adjusting portion branch comprises spring 11, regulate 9, diaphragm 12, capillary 13 and temperature-sensitive bag 14, regulating head is tubular body, the one end is communicated with the hot junction pipe end wall of vortex tube, uniform 4～8 balancing orifices 16 of both connections place, regulating an other end docks with diaphragm 12, capillary port one 3-1 successively, capillary is communicated with the temperature-sensitive bag, fills working medium in the temperature-sensitive bag.Be provided with push rod 8 in the described adjusting head, push rod two ends under the spring force effect press thermal valve tail end and diaphragm respectively.Accurate for guaranteeing the push rod displacement, to regulate in the head and be fixed with sleeve pipe 17, push rod is by passing in the sleeve pipe.
For making the pretightning force of spring action on push rod adjustable, the present invention sets up the initial tension of spring guiding mechanism, shown in Fig. 1～3, the initial tension of spring guiding mechanism is positioned at regulates the head place, it is by adjusting nut 20, spring keeper 10, setscrew nut 19 and clamping screw 18 are formed, the spring keeper is fixed on adjusting nut endoporus middle part, which is provided with centre bore 10-1 and 6～8 uniform through flow holes 10-2, described adjusting head is two sections combining structures, the adjusting nut two ends are connected with two sections adjusting head threads respectively, regulate between head for two sections and leave spring keeper mobile space, this mobile space is the adjustable range of initial tension of spring.Described two setscrew nuts 19 lay respectively at the adjusting nut both sides.For guaranteeing that regulating head for two sections connects reliably, clamping screw 18 is set, clamping screw passes and locks two setscrew nuts.Described spring position 11 is in regulating head, and push rod is positioned at spring center, and both ends of the spring is spacing by the bulge loop 8-1 of spring keeper and push rod end respectively.
Fig. 4～Fig. 6 is another embodiment of the present invention, be provided with rectifier 22 in this scheme hot junction pipe 5, rectifier double as spring keeper is used, rectifier is fixed on adjusting nut endoporus middle part by dowel 23, the initial tension of spring guiding mechanism is positioned at hot junction Guan Chu, and the hot junction pipe is two sections combining structures, and adjusting nut 20 two ends are connected with two sections hot junction gas thread respectively, leave the dowel mobile space between two sections hot junction pipes, this mobile space is the adjustable range of initial tension of spring.Setscrew nut 19 lays respectively at the adjusting nut both sides, and is reliable for guaranteeing that two sections hot junction pipes connect, and clamping screw 18 is set, and the clamping screw connection is also locked two setscrew nuts.Described spring 11 is positioned at the hot junction pipe, and its two ends are spacing by rectifier tail end and thermal valve top respectively.
Clamping screw takes the circumstances into consideration to be provided with 4～6, passes setscrew nut for ease of clamping screw, as seen from Figure 7, and uniform 4～6 arcuation locking screw keyholes 19-1 on the setscrew nut.
The initial tension of spring guiding mechanism of above-mentioned two kinds of schemes is provided with sealing 21 between adjusting nut, setscrew nut and adjusting head or hot junction pipe.The position of adjusting nut is fixed by setscrew nut, clamping screw during the device operate as normal, when adjusting initial tension of spring, unclamp by needs clamping screw, adjust setscrew nut and adjusting nut position, the pretightning force that setting spring is suitable is adjusted finish setscrew nut and clamping screw and all need be locked.
Operation principle of the present invention is as follows: the temperature-sensitive bag that is close to refrigeration system evaporator is experienced the temperature of evaporator outlet, working medium is saturation state in the temperature-sensitive bag, raises with evaporator outlet temperature, and pressure increases by certain relation, diaphragm right-hand member pressure increases, the promotion diaphragm moves to left, and diaphragm promotes push rod and moves to left, and push rod promotion thermal valve overcomes spring force and moves to left, then the hot junction aperture reduces, the hot-fluid ratio diminishes, and it is big that the cold flow ratio becomes, and the working medium that enters evaporimeter increases.Otherwise when evaporator outlet temperature reduced, diaphragm right-hand member pressure reduced, and thermal valve moves to right under the spring force effect, and the hot junction aperture increases, and it is big that the hot-fluid ratio becomes, and the cold flow ratio diminishes, and the working medium that enters evaporimeter reduces.Can change evaporator outlet degree of superheat control target by adjusting nut regulating spring pretightning force, initial tension of spring increases, and the outlet degree of superheat increases, and initial tension of spring reduces, and the outlet degree of superheat reduces.
Claims (6)
1. self-adjustable heating power expansion apparatus that is used for refrigeration system, it is characterized in that: it is grouped into by thermal expansion part and automatic adjusting portion, described thermal expansion partly is a vortex tube (1), be provided with thermal valve (6) in the hot junction pipe (5) of vortex tube, described automatic adjusting portion branch comprises regulates head (9), spring (11), diaphragm (12), capillary (13) and temperature-sensitive bag (14), regulating head is tubular body, the one end is communicated with the hot junction pipe end wall of vortex tube, the other end successively with diaphragm, capillary port (13-1) butt joint, capillary is communicated with the temperature-sensitive bag, be provided with push rod (8) in the described adjusting head, its two ends of push rod spring-loaded connect diaphragm and thermal valve tail end respectively.
2. the self-adjustable heating power expansion apparatus that is used for refrigeration system according to claim 1, it is characterized in that, set up the initial tension of spring guiding mechanism, described initial tension of spring guiding mechanism is positioned at regulates the head place, it is by adjusting nut (20), spring keeper (10), setscrew nut (19) and clamping screw (18) are formed, the spring keeper is fixed on adjusting nut endoporus middle part, which is provided with centre bore (10-1) and uniform 6～8 through flow holes (10-2), described adjusting head is two sections combining structures, the adjusting nut two ends are connected with two sections adjusting head threads respectively, regulate between head for two sections and leave spring keeper mobile space, described setscrew nut lays respectively at the adjusting nut both sides, the clamping screw connection is also locked two setscrew nuts, described spring (11) is positioned at regulates head, push rod is positioned at spring center, and both ends of the spring is spacing by the bulge loop (8-1) of spring keeper and push rod end respectively.
3. the self-adjustable heating power expansion apparatus that is used for refrigeration system according to claim 1, it is characterized in that, set up the initial tension of spring guiding mechanism, described initial tension of spring guiding mechanism is positioned at hot junction Guan Chu, it is by adjusting nut (20), rectifier (22), setscrew nut (19) and clamping screw (18) are formed, rectifier is fixed on adjusting nut endoporus middle part by dowel (23), described hot junction pipe is two sections combining structures, the adjusting nut two ends are connected with two sections hot junction gas thread respectively, leave the dowel mobile space between two sections hot junction pipes, setscrew nut lays respectively at the adjusting nut both sides, the clamping screw connection is also locked two setscrew nuts, described spring is positioned at the hot junction pipe, and its two ends are spacing by rectifier tail end and thermal valve top respectively.
4. according to claim 2 or the 3 described self-adjustable heating power expansion apparatus that are used for refrigeration system, it is characterized in that uniform 4～8 balancing orifices (16) between described adjusting head and the hot junction pipe.
5. the self-adjustable heating power expansion apparatus that is used for refrigeration system according to claim 4 is characterized in that, is provided with sleeve pipe (17) in the described adjusting head, and described push rod is by passing in the sleeve pipe.
6. the self-adjustable heating power expansion apparatus that is used for refrigeration system according to claim 5 is characterized in that described clamping screw is 4～6, uniform 4～6 arcuation locking screw keyholes (19-1) on the described setscrew nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810079226XA CN101354199B (en) | 2008-08-21 | 2008-08-21 | Heating power expansion apparatus capable of automatically adjusting for refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810079226XA CN101354199B (en) | 2008-08-21 | 2008-08-21 | Heating power expansion apparatus capable of automatically adjusting for refrigeration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101354199A CN101354199A (en) | 2009-01-28 |
| CN101354199B true CN101354199B (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810079226XA Expired - Fee Related CN101354199B (en) | 2008-08-21 | 2008-08-21 | Heating power expansion apparatus capable of automatically adjusting for refrigeration system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748897B (en) * | 2012-05-31 | 2015-04-29 | 深圳市力科气动科技有限公司 | Automatically adjustable cold and hot air separation equipment |
| CN104775791A (en) * | 2014-01-14 | 2015-07-15 | 盐城华跃石油机械制造有限公司 | Automatic separation all-metal sealed constant pressure recovery device for casing gas |
| EP3314347B1 (en) * | 2015-06-25 | 2019-04-17 | Pietro Fiorentini S.P.A. | System and method for regulating the pressure of a gas |
| CN110017626B (en) * | 2019-04-26 | 2020-11-20 | 哈尔滨工程大学 | Combined vortex tube |
| CN111998567B (en) * | 2020-08-14 | 2022-03-11 | 中国电子科技集团公司第十一研究所 | Active control type self-adjusting throttling refrigerator |
| CN113701388B (en) * | 2021-04-30 | 2022-11-01 | 中国科学院理化技术研究所 | Multi-element mixed working medium throttling-supersonic speed two-phase expansion composite low-temperature hydrogen liquefying system |
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- 2008-08-21 CN CN200810079226XA patent/CN101354199B/en not_active Expired - Fee Related
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| CN101354199A (en) | 2009-01-28 |
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Inventor after: Xie Yingbai Inventor after: Lun Liyong Inventor after: Zhao Cheng Inventor before: Lun Liyong Inventor before: Xie Yingbai Inventor before: Zhao Cheng |
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Free format text: CORRECT: INVENTOR; FROM: LUN LIYONG XIE YINGBO ZHAO CHENG TO: XIE YINGBO LUN LIYONG ZHAO CHENG |
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Granted publication date: 20100818 Termination date: 20130821 |