CN101458879A - Room temperature magnetothermal effect demonstration instrument - Google Patents
Room temperature magnetothermal effect demonstration instrument Download PDFInfo
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- CN101458879A CN101458879A CNA2008101850991A CN200810185099A CN101458879A CN 101458879 A CN101458879 A CN 101458879A CN A2008101850991 A CNA2008101850991 A CN A2008101850991A CN 200810185099 A CN200810185099 A CN 200810185099A CN 101458879 A CN101458879 A CN 101458879A
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- magnetic field
- room temperature
- drive rod
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Abstract
The invention relates to a room temperature magneto-caloric effect demonstration apparatus, comprising a shell, a magnetic field system, a temperature sensor, a drive rod, a drive rod driver, an analogue temperature measurer, a digital temperature measurer and a power distributor, which is characterized in that the drive rod is vertically hanged at the inner top end of the shell via return and limit components, the drive rod is provided with a metallic channel, the lower end of the drive rod is provided with a material room, the temperature sensor is arranged in the material room, the permanent magnetic field system is arranged at the inner lower part of the shell, whose magnetic field space is opposite to the lower end of the drive rod, the drive rod driver comprises a set of speed change mechanism, and the panel of the shell is provided with a glass observation window. The invention has the advantages that the room temperature magneto-caloric effect demonstration apparatus can clearly display the theory of magneto-caloric effect under the interaction with audiences, having compact structure, low operation and maintenance cost.
Description
One, technical field
The present invention relates to a kind of room temperature magnetothermal effect demonstration instrument, the particularly a kind of device that can clearly demonstrate the magnetothermal effect principle especially can be demonstrated the demonstrator of magnetothermal effect at the application principle of refrigeration technology field.
Two, background technology
Magnetothermal effect is that magnetic material is inhaled a kind of character of heat release owing to the inner magnet Entropy Changesization causes material in magnetization and demagnetization process, be a kind of inherent characteristic of material, the magnetic refrigeration realizes freeze a kind of environmental protection of purpose, energy-conservation new technology by the magnetothermal effect of material exactly.
At present, still the intact device that unmatchful this characteristic of material is demonstrated, the simple and easy device of building can't be demonstrated the principle of magnetothermal effect and the principle of relevant application directions such as magnetic Refrigeration Technique to the public, students in middle and primary schools, university student by directly perceived, easy mode.
Three, summary of the invention
The objective of the invention is in order to remedy the blank of magnetothermal effect principle demonstration and teaching field, a kind of room temperature magnetothermal effect demonstration instrument is provided, this demonstrator can pass through multiple Displaying Meter, make the public, student in the process of doing it yourself to operate, realize to magnetothermal effect the particularly understanding of magnetic Refrigeration Technique principle.
The technical problem to be solved in the present invention is: by with existing Magnetic Field Design, manufacturing technology, mechanical designing technique, measuring technique etc. by global design and integrated application, design a kind of device that can clear demonstration magnetothermal effect principle.
The objective of the invention is to realize in the following manner:
The present invention includes housing, the permanent magnetic field system that stable magnetic field space is arranged, temperature sensor, driving stem, the driving stem drive unit, the analog temperature instrument, the digital temperature instrument, power distribution equipment, it is characterized in that: driving stem is the straight-bar of being manufactured by insulating material, driving stem is with resetting, the top of limit assembly vertical hanging in housing, be axially arranged with metallic channel in the driving stem upper edge, be used to bury underground the temperature sensor data line, lower end at driving stem is provided with usable material chamber, be used to place magnetic refrigerating material, the external packets of usable material chamber is covered with insulation material, temperature sensor places in the usable material chamber, its data line is connected with the digital temperature instrument with the analog temperature instrument respectively, permanent magnetic field system is arranged at the bottom in the housing, its magnetic field space is relative with the lower end of driving stem, the driving stem drive unit comprises a cover gear, on the input shaft of gear, be connected with manual rocking-turn handle, on its output shaft, be connected with driving shaft, driving shaft the axle on have cooperate with driving stem can drive the mechanism that driving stem moves in the vertical direction, on the panel of housing, be provided with glass vision panel.
The magnetic induction density of described permanent magnetic field system is that 0.1T is to 3T (tesla).
The invention has the beneficial effects as follows: can with spectators' interaction in, with the clear displaying of principle of magnetothermal effect.Compact equipment, operation, maintenance cost are cheap.Major advantage is:
1. simple in structure, easy and simple to handle.The field system that the present invention has adopted permanent magnet to form, it is simple in structure, stable performance.Adopt indirect machinery, circuit design, stable performance, easy and simple to handle.Being convenient to various crowds uses.
2. operating cost of the present invention is cheap, adopts permanent magnetic field system to reduce main energy consumption.
Four, description of drawings
Fig. 1 is a structure principle chart of the present invention.
Fig. 2 is a kind of transverse section structural map of magnetothermal effect demonstration instrument field system.
Fig. 3 is the synoptic diagram of magnetothermal effect demonstration instrument panel.
1. permanent magnetic field systems among the figure, 2. magnetic field space, 3. insulation material, 4. magnetic refrigerating material, 5. temperature sensor, 6. magnetic refrigerating material driving stem, 7. gear, 8. manually rocking-turn handle, 9. driving shaft, 10. reset, limit assembly, 11. housings, 12. power distribution equipments, 13. the analog temperature instrument, 14. digital temperature instrument, 15. data lines, lead, 16. yoke, 17. rare-earth permanent magnets, 18. glass vision panel.
Five, embodiment
Shown in accompanying drawing 1,2,3.The present invention includes housing 11, permanent magnetic field system 1, magnetic refrigerating material driving stem 6, manually rocking-turn handle 8, gear 7, driving shaft 9, reset, limit assembly 10, analog temperature instrument 13, digital temperature instrument 14, power distribution equipment 12.
Magnetic refrigerating material driving stem 6 is provided with the cylindrical or square usable material chamber of placing magnetic refrigerating material for straight-bar comprises its lower end, and the material driving stem is made by insulating material such as nylon or bakelites.Be used to place the usable material chamber diameter 5-40 millimeter of magnetic refrigerating material, degree of depth 20-80 millimeter is processed with screw thread and end cap.Be axially arranged with in the driving stem upper edge and be processed with metallic channel, and be provided with on driving stem and be used for the part that cooperates with driving shaft, metallic channel is used to bury underground the temperature sensor data conductor.As shown in Figure 1, magnetic refrigerating material 4 and temperature sensor 5 are imbedded in the lower end usable material chamber of material driving stem, the periphery of usable material chamber is coated with insulation material 3, and the data line of temperature sensor is drawn by the metallic channel on the material driving stem, is connected with digital temperature instrument 14 with analog temperature instrument 13.
Gear 7, manually rocking-turn handle 8 and driving shaft 9 employing high-quality steel and all kinds of standard component manufacturings.Driving shaft 9 can adopt modes such as tooth bar, crank, turbine-worm screw, belt gear to design the driving mechanism that cooperates with magnetic refrigerating material driving stem 6.Gear 7 is speed reduction units, and the manual rocking-turn handle 8 of designing requirement changes the 5-8 circle, and magnetic refrigerating material driving stem 6 can be realized 2-20 centimetre stroke.6 driving mechanisms the simplest of driving shaft 9 and magnetic refrigerating material driving stem are on the axle of driving shaft 9 with on the driving stem 6 intermeshing teeth to be set respectively.
Reset, limit assembly 10 is made up of back-moving spring and adjusting screw (for example, being positioned at the top of back-moving spring as Fig. 1 adjusting screw), is used to realize that the adjusting and the post exercise of magnetic refrigerating material driving stem initial position reset.
As Fig. 2, permanent magnetic field system 1 comprises yoke 16, the Nd-Fe-B permanent magnetic rare-earth magnet 17 of annular, square or other shapes, and according to Fig. 2, it is even to obtain magnetic induction density by the precision assembling, and magnetic induction density reaches the useful magnetic field space 2 of 1.5T.The magnet yoke plate is the mild carbon steel of thickness 4-20mm or the solid drawn tube of pure iron, perhaps is made of the member of respective shapes low-carbon steel plate or pure iron sheet material.Permanent magnetism rare-earth magnet 17 can adopt the permanent magnetic material of various different performances, as permanent magnetic materials such as neodymium iron boron, ferrite, SmCos, adopts Nd-Fe-Bo permanent magnet material in the present embodiment.Permanent magnetism rare-earth magnet 17 is processed into corresponding shape according to concrete magnetic Circuit Design, fan-shaped as among Fig. 2.Then, form stable magnetic circuit system according to magnetic Circuit Design and yoke assembling.According to the actual requirements, magnetic field space 2 can be designed to as circular, square, triangle or other geometric configuratioies and size.
As Fig. 3, the panel of this demonstrator is provided with clear glass form 18, and simultaneously, the panel of analog temperature instrument 13, digital temperature instrument 14 also is embedded on the panel of demonstrator, and spectators can observe demonstrator internal operation situation by clear glass form 18.Observe the variation of temperature data by analog temperature instrument 13, digital temperature instrument 14.Operate by driving 8 pairs of demonstrators of manual rocking-turn handle.
Shown in Figure 1 as the room temperature magnetothermal effect demonstration instrument schematic diagram, field system 1 is positioned at the below of housing of the present invention, and the position that its top is right against magnetic field space 2 is magnetic refrigerating material driving stem 6 successively, reset, limit assembly 10.Analog temperature instrument 13 links to each other with temperature sensor 5 with digital temperature instrument 14 bronze drum leads.Can regulate reset, limit assembly makes magnetic refrigerating material driving stem 6 be positioned at suitable initial position.When spectators shake manual rocking-turn handle 8, magnetic refrigerating material driving stem 6 moves downward, until entering magnetic field space 2, magnetic refrigerating material 4 is realized magnetization, temperature raises, temperature signal passes to analog temperature instrument 13 and digital temperature instrument 14 by lead, and spectators obtain magnetizing the visual understanding of intensification by these two instrument; When spectators oppositely shake manual rocking-turn handle 8 or decontrol manual rocking-turn handle 8, magnetic refrigerating material driving stem 6 is in spectators operation or reset, get back to initial position under limit assembly 10 effects, magnetic refrigerating material 4 demagnetizations, temperature reduces, temperature signal passes to analog temperature instrument 13 and digital temperature instrument 14 by lead, spectators are by these two instrument obtain demagnetizing visual understanding of cooling, wherein: magnetic refrigerating material 4 can be Gd, GdSiGe, MnAs, MnFePAs, LaFeSi, LaFeCoSiB, waits the material of any available magnetic refrigeration.
Spectators can understand magnetothermal effect, the i.e. principle of magnetic Refrigeration Technique clearly by shaking handle, release handle, glass vision panel and thermometric instrument.
Claims (4)
1, a kind of room temperature magnetothermal effect demonstration instrument comprises housing, the permanent magnetic field system that stable magnetic field space is arranged, temperature sensor, driving stem, the driving stem drive unit, the analog temperature instrument, the digital temperature instrument, power distribution equipment, it is characterized in that: driving stem is the straight-bar of being manufactured by insulating material, driving stem is with resetting, the top of limit assembly vertical hanging in housing, be axially arranged with metallic channel in the driving stem upper edge, lower end at driving stem is provided with usable material chamber, temperature sensor places in the usable material chamber, its data line is connected with the digital temperature instrument with the analog temperature instrument respectively, permanent magnetic field system is arranged at the bottom in the housing, its magnetic field space is relative with the lower end of driving stem, the driving stem drive unit comprises a cover gear, on the input shaft of gear, be connected with manual rocking-turn handle, on its output shaft, be connected with driving shaft, driving shaft the axle on have cooperate with driving stem can drive the mechanism that driving stem moves in the vertical direction, on the panel of housing, be provided with glass vision panel.
2, room temperature magnetothermal effect demonstration instrument according to claim 1 is characterized in that: the magnetic induction density of permanent magnetic field system is 0.1 to 3 tesla.
3, room temperature magnetothermal effect demonstration instrument according to claim 1 is characterized in that: the external packets at usable material chamber is covered with insulation material.
4, room temperature magnetothermal effect demonstration instrument according to claim 1 is characterized in that: reset, limit assembly is made up of back-moving spring and adjusting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101850991A CN101458879A (en) | 2008-12-23 | 2008-12-23 | Room temperature magnetothermal effect demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101850991A CN101458879A (en) | 2008-12-23 | 2008-12-23 | Room temperature magnetothermal effect demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101458879A true CN101458879A (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101850991A Pending CN101458879A (en) | 2008-12-23 | 2008-12-23 | Room temperature magnetothermal effect demonstration instrument |
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| CN (1) | CN101458879A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163177A (en) * | 2013-03-07 | 2013-06-19 | 包头稀土研究院 | Magnetothermal effect measurement system and method |
| CN109991271A (en) * | 2019-04-08 | 2019-07-09 | 包头稀土研究院 | Specimen holder, the magnetothermal effect measuring instrument with reference temperature and measurement method |
| CN111702355A (en) * | 2020-06-26 | 2020-09-25 | 黄磊 | Quick-cooling positioning clamp for laser marking machine |
-
2008
- 2008-12-23 CN CNA2008101850991A patent/CN101458879A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103163177A (en) * | 2013-03-07 | 2013-06-19 | 包头稀土研究院 | Magnetothermal effect measurement system and method |
| CN109991271A (en) * | 2019-04-08 | 2019-07-09 | 包头稀土研究院 | Specimen holder, the magnetothermal effect measuring instrument with reference temperature and measurement method |
| CN111702355A (en) * | 2020-06-26 | 2020-09-25 | 黄磊 | Quick-cooling positioning clamp for laser marking machine |
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Open date: 20090617 |