CN102306473B - Rapidly-learned and easily-used object teaching refrigerator - Google Patents
Rapidly-learned and easily-used object teaching refrigerator Download PDFInfo
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- CN102306473B CN102306473B CN 201110319472 CN201110319472A CN102306473B CN 102306473 B CN102306473 B CN 102306473B CN 201110319472 CN201110319472 CN 201110319472 CN 201110319472 A CN201110319472 A CN 201110319472A CN 102306473 B CN102306473 B CN 102306473B
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Abstract
The invention discloses a rapidly-learned and easily-sed object teaching refrigerator. The refrigerator is characterized in that the liquid injection port of a compressor (1) and a stop valve (1) are respectively connected to a rapid joint (7) so as to be connected with a vacuum pump (14) and a refrigerant tank (150), a high-voltage end connection stop valve (110) is connected with an air cooling condenser (3) through a change valve (13) and a tee valve (27), a lower-voltage end connection stop valve (111) is connected with an air cooling evaporator (5) through the change valve (13) and a low voltage relay (21) as well as the stop valve (112), the air cooling condenser (3), the tee valve, a filter, an expansion vale, a current meter and the air cooling evaporator are successively connected so as to form a loop; a refrigerating system with mutually converted water cooling and air fooling and a glass liquid view window are arranged in the teaching refrigerator, thus the interest of students in innovation and creation is effectively triggered, and the students can intuitively know the object principle; the refrigerator is simple to understand and essential, the aim that the students personally conduct design, manufacturing and operation can be met; and by using the refrigerator, the teaching difficulties are broken through, and teaching hours are shortened and simplified, thereby avoiding the waste of educational resources.
Description
Technical field
The present invention relates to a kind of object visual of refrigeration system, specially refer to a kind of speed and learn easy-to-use object teaching refrigeration machine, working condition by each point of refrigerator system directly perceived inside and outside, to the do it yourself chance of execute-in-place of student, make the student feel vivid and interesting, consolidate easily knowledge, lay the foundation for learning fast refrigerant system design and grasping the refrigeration rule, this teaching aid belongs to the instruments used for education field.
Background technology
Along with Global Temperature warms gradually, the raising of people's living standard, refrigeration industry can be more and more
Therefore hot topic causes these technician's increases in demand.Because China's teaching can not be satisfied existing Refrigeration Specialty aspect putting into practice, teaching environment can not adapt to the challenge of future education far away, all also far can not satisfy teacher's needs by Instructional Design in teaching practice at aspects such as Learning Support Service imparts knowledge to students, all be to impart knowledge to students in theory mostly, a lot of knowledge can't be used in society, need the long time to go to understand and adapt to.The narration of visible words can not allow the people entirely understand, the actual plenty of time of delaying a lot of scholars of these teaching methods, and not only waste resource and also wasted the valuable youth of young man, make thus manyly to possess creationary new invention and be delayed.At present multimedia teaching, the needs of vast teachers ' teaching have substantially been satisfied, but the visual illustration majority does not also have in our teaching of real introducing so far, material object taken on the classroom impart knowledge to students, allow the real object of students experience, doing it yourself to operate, design, create, use, is the effective way of impart knowledge and learning knowledge, makes the further shortening of our instructional blocks of time.Nowadays refrigeration plant has entered huge numbers of families, refrigeration plant manufacturing and maintenance are difficult point and the emphasis in the business administration all the time, and present stage Refrigeration Technique personnel famine, the student out of school is many not to be had through the theory with practice exercise than system, the quality such as drawing, detection method, parts machining, rigging error and overall performance to equipment are understood not, cause school and society to break away from.For this problem, how to produce the object visual that meets the student and remedy this defective, avoid detours, shorten learning time, improve Teaching Benefits and quality, satisfy " low-carbon (LC) " economy era Refrigeration Specialty technology and use the train of the talents demand, the student has practical experience once graduating, theory and practice can better be connected, and is the problem that current vocational-technical education system can not be avoided and needs solve.
Summary of the invention
The present invention uses the refrigeration knowledge of learning to realize above purpose for student's speed is learned soon, design a kind of speed and learned easy-to-use object teaching refrigeration machine, can do it yourself to operate, design, create, use, change the continuity content of courses and pattern for many years, to be practiced as leading teaching pattern, consolidate in operation knowledge, refrigerator system inside and outside shape directly perceived, each position of system forms, inner refrigerant liquid, the working condition that gas changes, as change the different configuration of system works, produce different operational effect, can open-and-shut being presented in face of the student.This system is by compressor, speed-regulating fan, air-cooled condenser, submerged coil condenser, small-sized cooling tower, expansion valve, wind-cooled evaporator, water tank type evaporator, fan coil; filtrator, kapillary, flow velocity device, stop valve, solenoid valve, temperature sensor, reversal valve, reometer, voltage table, tensimeter, water circulating pump, T-valve, rapid-acting coupling, high-voltage relay, reset overload protective device and low-voltage relay form; be installed in a design and the stainless steel frame that system equates, front and back can be watched.1 glass vision panel respectively is set in compressor, expansion valve, filtrator and the pipeline in system, before and after condenser, the evaporator 2 glass vision panel is set respectively, glass vision panel is through O-ring seal and screw locking.Be provided with vacuum pump, refrigerant tank and electronic scale in the system, it can vacuumize in maintenance, quantitatively fill or use when reclaiming refrigerant, is connected to rapid-acting coupling, and is easy to use.
Described speed is learned easy-to-use object teaching refrigeration machine, compressor liquid injection port and stop valve are connected vacuum pump and refrigerant tank to rapid-acting coupling respectively, high-pressure side connects stop valve and connects air-cooled condenser by reversal valve through T-valve, low pressure end connect stop valve through reversal valve by low-voltage relay and stop valve to wind-cooled evaporator, air-cooled condenser by T-valve and solenoid valve to filtrator and expansion valve through flow velocity device to the wind-cooled evaporator formation loop that is connected.
Described object teaching refrigeration machine is made as water-cooled and air-cooled two refrigeration systems, the ducted T-valve in the two ends of system's air-cooled condenser is connected in parallel with the two ends of submerged coil condenser respectively, be connected in parallel with water tank type evaporator two ends respectively at the ducted T-valve in wind-cooled evaporator two ends, submerged coil condenser is crossed water circulating pump through device for cleaning pipeline and is connected with cooling tower, and the water tank type evaporator is crossed water circulating pump through device for cleaning pipeline and is connected with fan coil.
Described speed is learned easy-to-use object teaching refrigeration machine, submerged coil condenser and water tank type evaporator shell are that stainless steel and clear glass are made front and rear-viewed sealing insulation can, can see inner refrigerating medium working condition, the insulation can bottom is provided with cock of water drain, and the ducted solenoid valve of fan coil is provided with temperature sensor.When needing the test ice making, the fan coil solenoid valve that arranges is by the temperature sensor autoshutdown, fan coil quits work, can see the icing phenomenon of water tank type evaporator internal water, as process in addition water-cooled evaporator with the screw propeller circulation stirring in parallel of ice lolly, in water, add icing getting final product of the anti-sealing of certain salt, just can know the principle of making ice lolly and cold-storage, refrigerating medium and agent for storage of coldness, the requirement of agent for storage of coldness character, and water tank cold-storage ability, the characteristics of evaporator, the ice making situation, the instrument of seeing simultaneously each point shows numeral, refrigerating medium water adds not easy freezing of salinity increase, the phenomenon such as ice making rod or ice cube how, the better air-cooled condenser of understanding on the market, submerged coil condenser and water tank type evaporator, the classification of recirculation-type evaporator and flooded evaporator, diabatic process in structural shape and characteristics and the heat-exchange apparatus and Calculation of Heat Transfer are grasped planomural and are conducted heat, pipe conducts heat, diabatic process and Calculation of Heat Transfer that the rib wall conducts heat.
Described speed is learned easy-to-use object teaching refrigeration machine, air-cooled condenser in the refrigeration system, wind-cooled evaporator, compressor, filtrator, all establish tempered glass and look the liquid window, wherein, air-cooled condenser, wind-cooled evaporator, submerged coil condenser, water tank type evaporator head and the tail two ends are established two glass and are looked the liquid window, compressor, filtrator is that a glass is looked the liquid window, glass is looked the liquid window by O-ring seal and stainless steel flanging screw locking, during work glass vision panel can watch inner which partly be gas which partly be gas and the working conditions change of liquid and the working condition of compressor inside in the liquid coolant work.
2 T-valve of described refrigeration throttling employing are connected with expansion valve on one side on one side and are connected with the rapid-acting coupling kapillary, another side is connected the flow velocity device to evaporator with the refrigeration system pipeline, T-valve branches into two kinds of expansion valve throttling and capillary-compensateds in the described refrigeration system, expansion valve two ends and T-valve are connected in parallel, the kapillary two ends are connected in parallel through rapid-acting coupling and T-valve, for subsequent use for testing, expansion valve is not worked when 2 T-valve are closed before and after the expansion valve, select kapillary can normally freeze through rapid-acting coupling both sides connected system, at this moment can allow the student start to process kapillary, by changing kapillary length size, can see throttling liquid situation in the flow velocity device, observe simultaneously temperature, pressure, the situation that the heating power of refrigeration cycle is changed, adjust refrigerating state and the cold-producing medium optimum value that heats state by throttling, just can understand operation, design, create and use, the coefficient of performance that is subject to changing refrigerator system when flow velocity is also changed at any time and is affected, different heat transfer properties relatively, be superheated vapor-saturated vapour-two-phase-liquid state-supercooled liquid, select most economical refrigeration cycle through overtesting.
Described speed is learned easy-to-use object teaching refrigeration machine, it is characterized in that: described kapillary is in parallel with expansion valve to be changed by T-valve, described submerged coil condenser is in parallel with air-cooled condenser to be changed by T-valve, and the water tank type evaporator is in parallel with wind-cooled evaporator to be changed by T-valve.Water-cooled and air-cooled can be selected by system, and when the conversion water-cooling system, refrigerating medium exchanges with cooling tower and fan coil respectively through water pump.
Described speed is learned easy-to-use object teaching refrigeration machine; tensimeter in the refrigeration system and temperature sensor and compressor, air-cooled condenser and wind-cooled evaporator; expansion valve links to each other, and reometer is connected with the compressor wiring port with the overload protective device series connection that is connected, voltage table parallel connection.Described refrigerating system circuit is furnished with communication interface, can realize connecting with computing machine, and the refrigeration system that detects is curve map state and the exception record of parameters, the variation of running refrigerating temperature and pressure per hour.The exchange fan of described air-cooled condenser, wind-cooled evaporator, fan coil is speed-regulating fan, be provided with driving switch, the speed of adjustment wind speed and water temperature, dust, incrustation scale, corrosion, the impact of the factors such as environment temperature, (the artificial manufacturing) just can be watched variation and the internal condition operation fluidised form of refrigeration system heat transfer coefficient pressure, temperature, current/voltage.
Described speed is learned easy-to-use object teaching refrigeration machine, compressor liquid injection port, high-pressure side, low pressure end joint respectively continuous stop valve is movable detachable, the compressor joint test of replaceable other models, the vibration damper of the setting of compressor bottom, comprise: damping spring shock absorber, rubber shock absorber and separating vibration device, allow student oneself change, how to reduce the problem of noise, improvement vibration nuisance.
Speed of the present invention is learned easy-to-use object teaching refrigeration machine beneficial effect; Break through the difficult point of refrigeration teaching, more save time, laborsaving, effectively finish teaching purpose.The student is opened one's mouth, start, moving eye, beat one's brains, allow student's various sense organs all participate in the learning activities, break through traditional teaching pattern, introducing the object operation technology is a kind of innovation of teaching, simultaneously also be that a kind of object teaching is extended, rather than the concept in the book contents, allow the student know refrigeration principle by demonstration, how to produce refrigeration, mechanical energy is made and designed to the control of cryogenic temperature how, the energy conversion relation of the refrigeration machine of electric energy or heat-driven and the coefficient of performance of refrigeration machine, the thermodynamic perfect degree of refrigeration cycle, arouse the interest in study designs, being willing to deal with problems in life proposes higher requirement, realizes creativity and innovation in conjunction with book knowledge.The present invention is as the professional universities and colleges such as refrigerator, domestic air conditioning, central air conditioner, freezer teaching use, this refrigeration system is understandable, smartly want, eager to learn easy-to-use, satisfy the purpose that each student takes action on one's own to design, make operation, really realize fast teaching task, avoid educational resource shortage and waste, shorten the time that enters society and practise after a large amount of lengths of schooling and the student graduation.
Description of drawings
Fig. 1 refrigerator system organigram in kind
Configuration schematic diagram around Fig. 2 compressor
Air-cooled, two kinds of condensers of water-cooled of Fig. 3 parallel connection and evaporator organigram
In the accompanying drawings, 1. compressor, 2. speed-regulating fan; 3. air-cooled condenser, 4. expansion valve, 5. wind-cooled evaporator; 6. filtrator, 7. rapid-acting coupling, 8. kapillary; 9. flow velocity device, 10. glass is looked the liquid window, 11. stop valves; 12. temperature sensor, 13. reversal valves, 14. vacuum pumps; 15. refrigerant tank, 16. tensimeters, 17. voltage tables; 18. reometer, 19. high-voltage relays, 20. overload protective devices that reset; 21. low-voltage relay, 22. water tank type evaporators, 23. fan coils; 24. water circulating pump, 25. submerged coil condensers, 26. cooling towers; 27. T-valve, 28. solenoid valves.
Embodiment
Technical solution of the present invention will be further described below in conjunction with accompanying drawing:
In Fig. 1 Fig. 2, compressor (1) liquid injection port and stop valve (11) are connected vacuum pump (14) and refrigerant tank (15) to rapid-acting coupling (7) respectively, high-pressure side connects high-voltage relay (19) stop valve on one side to rapid-acting coupling (7) and refrigerant tank (150), be connected air-cooled condenser (3) by reversal valve (13) through T-valve with stop valve (110) on one side, low pressure end is connected wind-cooled evaporator (5) to low-voltage relay (21) through stop valve (112) by reversal valve (13) with stop valve (111), and air-cooled condenser (3) is connected through flow velocity device (9) to wind-cooled evaporator (5) with expansion valve (4) to filtrator (6) with solenoid valve by T-valve and forms the loop.Compressor among Fig. 1 (1) is movable, when other specification compressors of needs are tested, only need dismounting stop valve (11) jointing just can change, make the student understand the heart that compressor is refrigeration system, after by motor internal running drive piston it being compressed, for refrigeration cycle provides power, discharge the refrigerant gas of High Temperature High Pressure to gas outlet, air intake duct sucks the refrigerant gas of low-temp low-pressure, thereby realize compression, condensation, the refrigeration cycle of four basic processes of throttling and evaporation (heat absorption) changes reversal valve (13) direction by hand switch and realizes cold and hot exchange.
Described air-cooled condenser (3) and wind-cooled evaporator (5) compressor (1); the tempered glass that filtrator (6) arranges is looked the liquid window; glass is looked liquid window (10); (102) (104); (105); (101); (103) place air-cooled condenser (3) and wind-cooled evaporator (5); compressor (1); in the filtrator (6); intuitively the refrigerant cold cycling is from the variation of two-way gas and liquid; compressor in the described refrigeration system (1); before and after air-cooled condenser (3) and the wind-cooled evaporator (5); the equal Bonding pressure table in expansion valve (4) rear portion (16) and temperature sensor (12); be provided with voltage table (17) reometer (18) overload protective device (20) that resets at compressor (1) Wiring port; air-cooled condenser (3) is connected 5 with wind-cooled evaporator) the place ahead is connected with speed-regulating fan (2); when regulating speed-regulating fan (2) speed speed, tensimeter (16) and temperature sensor (12); voltage table (17); reometer (18) is also along with variation.
In Fig. 3, the ducted T-valve in two ends (27) of described system air-cooled condenser (3) are connected in parallel with the two ends of submerged coil condenser (25) respectively, submerged coil condenser (25) is crossed water circulating pump (24) through device for cleaning pipeline and is connected with cooling tower (26), be connected in parallel with water tank type evaporator (22) two ends respectively at the ducted T-valve in wind-cooled evaporator (5) two ends (27), water tank type evaporator (22) is crossed water circulating pump (24) through device for cleaning pipeline and is connected with fan coil (23), carries out cold and hot exchange by refrigerating medium.
Make the student further understand the main structure of refrigeration and central air conditioner by Fig. 3 system works, cooling water system classification in the water cooled condenser, the principle of work of recirculating water system, cooling tower, evaporation structure pattern and the characteristics such as the classification of evaporator, dry evaporator, recirculation type.Through demonstration and the experiment of these material objects, can know and see in evaporator or condenser that the low pressure liquid refrigerant gasification is to absorb heat from object or the space of needs cooling, make the object that is cooled or the temperature reduction in space, reach the purpose of refrigeration.
The course of work of the object teaching refrigeration machine that above-mentioned speed is easy-to-use is as follows: described kapillary (8) is in parallel with expansion valve (4) by T-valve (27) conversion; the big or small length of kapillary (8) can be selected by the student, changes at any time the specification of kapillary (8) in not shutting down by rapid-acting coupling (7).Described submerged coil condenser (25) is in parallel with air-cooled condenser (3) by T-valve (27) conversion, water tank type evaporator (22) is in parallel with wind-cooled evaporator (5) by T-valve (27) conversion, select water-cooled and air-cooled, when the exchanged water cooling system, refrigerating medium exchanges with cooling tower (26) and fan coil (23) respectively through both sides water pump (24), (1) three port of described compressor is that stop valve (11) can for convenience detachly be changed, compressor bottom multiple vibration damper is set, comprise: damping spring shock absorber, rubber shock absorber and separating vibration device are tested multiple noise-proofing method.
It is a kind of complete refrigeration system embodiment that the present invention's speed is learned easy-to-use object teaching refrigeration machine, can really allow the student take action on one's own to design, grasp fast various Refrigeration Techniques, do not start for compressor, the motor overload, condensing pressure is too high, evaporating pressure is crossed low too high, compressor exhaust temperature excessively low (height), short of refrigerant, device for drying and filtering stops up, expansion valve stops up, the compressor gas admittance valve stops up, cooling water flow, cold in-water temperature is to the effect of GM Refrigerator Working, cold-producing medium injects, control, make, maintenance, the result, analyze, reason, the external condition impact, fault, conclusion and the practical operative technique of design, this refrigerating system circuit is furnished with communication interface, realize connecting with computing machine, the refrigeration system that detects is parameters per hour, curve map state and exception record that the running refrigerating temperature and pressure changes are analyzed and are processed, excite the interest of student's innovation and creation, a more intuitively understanding can be arranged the ultimate principle of material object, improve the quality of teaching, saved the time, effectively simplified the class hour of giving lessons.
Claims (1)
1. a speed is learned easy-to-use object teaching refrigeration machine; it is characterized in that: compressor (1) liquid injection port and stop valve (11) are connected vacuum pump (14) and refrigerant tank (150) to rapid-acting coupling (7) respectively; high-pressure side connects stop valve (110) and connects air-cooled condenser (3) by reversal valve (13) through T-valve (27); low pressure end connect stop valve (111) through reversal valve (13) by low-voltage relay (21) and stop valve (112) to wind-cooled evaporator (5); air-cooled condenser (3) is connected through flow velocity device (9) to wind-cooled evaporator (5) with expansion valve (4) to filtrator (6) with solenoid valve (18) by T-valve (27) and forms the loop; air-cooled condenser in the described refrigeration system (3); wind-cooled evaporator (5); compressor (1); filtrator (6); all establish tempered glass and look liquid window (10); wherein; air-cooled condenser (3); wind-cooled evaporator (5); submerged coil condenser (25); water tank type evaporator (22) head and the tail two ends are established two glass and are looked liquid window (10); compressor; filtrator is that a glass is looked liquid window (10); glass is looked the liquid window by O-ring seal and stainless steel flanging screw locking; tensimeter in the described refrigeration system (16) and temperature sensor (12) and compressor (1); air-cooled condenser (3) and wind-cooled evaporator (5); expansion valve (4) links to each other; reometer (18) and the overload protective device that resets (20) series connection; voltage table (17) is in parallel to be connected with compressor (1) Wiring port; described object teaching refrigeration machine is made as water-cooled and air-cooled two refrigeration systems; the ducted T-valve in two ends of system's air-cooled condenser (3) is connected in parallel with the two ends of submerged coil condenser (25) respectively; be connected in parallel with water tank type evaporator (22) two ends respectively at the ducted T-valve in wind-cooled evaporator (5) two ends; submerged coil condenser (25) is crossed water circulating pump (24) through device for cleaning pipeline and is connected with cooling tower (26); water tank dry type evaporator (22) is crossed water circulating pump (24) through device for cleaning pipeline and is connected with fan coil (23); described submerged coil condenser and water tank type evaporator shell are that stainless steel and clear glass are made front and rear-viewed sealing insulation can; the insulation can bottom is provided with cock of water drain; the ducted solenoid valve of fan coil (23) (281) is provided with temperature sensor; described compressor liquid injection port; high-pressure side; low pressure end joint respectively continuous stop valve is movable detachable; the vibration damper of the setting of compressor bottom; comprise: damping spring shock absorber; rubber shock absorber and separating vibration device; described air-cooled condenser; wind-cooled evaporator; the exchange fan of fan coil is speed-regulating fan; be provided with driving switch; refrigerating system circuit is furnished with communication interface; can realize connecting with computing machine; the refrigeration system that detects is parameters per hour; curve map state and exception record that the running refrigerating temperature and pressure changes; described kapillary is in parallel with expansion valve to be changed by T-valve; described submerged coil condenser is in parallel with air-cooled condenser to be changed by T-valve; the water tank type evaporator is in parallel with wind-cooled evaporator to be changed by T-valve; T-valve branches into two kinds of expansion valve throttling and capillary-compensateds in the described refrigeration system; expansion valve two ends and T-valve are connected in parallel, and the kapillary two ends are connected in parallel through rapid-acting coupling and T-valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110319472 CN102306473B (en) | 2011-10-19 | 2011-10-19 | Rapidly-learned and easily-used object teaching refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110319472 CN102306473B (en) | 2011-10-19 | 2011-10-19 | Rapidly-learned and easily-used object teaching refrigerator |
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| CN102306473A CN102306473A (en) | 2012-01-04 |
| CN102306473B true CN102306473B (en) | 2013-03-20 |
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| CN 201110319472 Expired - Fee Related CN102306473B (en) | 2011-10-19 | 2011-10-19 | Rapidly-learned and easily-used object teaching refrigerator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102609016B (en) * | 2012-03-06 | 2014-03-05 | 浙江大学 | Temperature control device and control method for large arm type centrifuge test chamber |
| CN107421207A (en) * | 2017-07-18 | 2017-12-01 | 李江 | A kind of residual-heat used type refrigeration system |
| CN113465235A (en) * | 2021-08-02 | 2021-10-01 | 丹顶鹤智能科技(江苏)有限公司 | Electronic expansion valve refrigerating device |
| CN115691294A (en) * | 2022-12-01 | 2023-02-03 | 渤海造船厂集团有限公司 | Acrylic composite refrigerator teaching device and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2758671Y (en) * | 2004-12-22 | 2006-02-15 | 韩金山 | Full-function air conditioner water heater |
| FR2921471A1 (en) * | 2007-09-21 | 2009-03-27 | Hades Soc Par Actions Simplifi | Distributor casing for use in heating/air-conditioning installation, has control unit controlling two-way on or off stop valves to select one of combination schemes for distributing heat transfer fluid |
| CN201215699Y (en) * | 2008-07-17 | 2009-04-01 | 武汉钢铁(集团)公司 | Analogue multifunctional central air-conditioner experiment device for teaching |
| CN101447142B (en) * | 2008-12-11 | 2012-06-27 | 杨洪林 | Refrigeration experiment (practical training) device |
| CN201725483U (en) * | 2010-07-06 | 2011-01-26 | 广州市机电高级技工学校 | Teaching and training device for refrigeration specialty |
| CN202306945U (en) * | 2011-10-19 | 2012-07-04 | 谢逢华 | Quick-study and easy-to-use object teaching refrigerating machine |
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