CN205992351U - A kind of vortex heat demonstration teaching aid - Google Patents
A kind of vortex heat demonstration teaching aid Download PDFInfo
- Publication number
- CN205992351U CN205992351U CN201620397508.4U CN201620397508U CN205992351U CN 205992351 U CN205992351 U CN 205992351U CN 201620397508 U CN201620397508 U CN 201620397508U CN 205992351 U CN205992351 U CN 205992351U
- Authority
- CN
- China
- Prior art keywords
- iron core
- metal tube
- coil
- vortex
- metal bar
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 238000002845 discoloration Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Pens And Brushes (AREA)
Abstract
The utility model discloses a kind of vortex heat demonstration teaching aid, it includes a base, and base is placed with the different metal tube of some diameters, is wound around enamel-covered wire thus forming coil outside metal tube；It also includes the metal bar being placed in described metal tube, and metal bar is made up of iron core and insulated handle, and the outer uniform application of iron core has temperature-sensitive color shifting ink.During use, metal bar is inserted in coil, then to coil electricity, now produce vortex in iron core, begin to warm up；Take out metal bar after a period of time, observe the discoloration of its heat discoloration ink.Using the chromogenic reaction of temperature-sensing color-changing material, by within a certain period of time, in different coils, the discoloration of iron core is it can be deduced that number of turn of different internal coil diameter sizes and coil etc. can affect the heat effect being vortexed.Thus quickly allowing student be familiar with the knowledge of electromagnetism and calorifics, taking enjoyment to the classroom of student, presenting the heat effect of vortex more visual in imagely, bring sense of reality to student.
Description
Technical field
This utility model belongs to teaching equipment field, more particularly to a kind of vortex heat demonstration teaching aid.
Background technology
At present in teaching of senior high school, vortex heat is a relatively more abstract knowledge point, textbook is not described special
Test and to demonstrate vortex heat, when explaining the principle of electromagnetic oven and metal smelt, student's indigestion.Existing vortex heat
Effect demonstration instrument mainly has following two.
The first：The circular iron hoop filling wax is placed on dismountable transformer removed on the iron core of secondary coil, by former line
After circle accesses 220V voltage, after a period of time, circular iron hoop is waxed fusing.But utilize this device, wax fusing needs 5 minutes, drills
Show that the time is longer, reduce the utilization rate of time in classroom.
Second：Soft iron rod is placed in teat glass, adds water in teat glass, teat glass adds in coil, coil
Pass to alternating current, boiling water in teat glass after a period of time, can be observed.Although electrothermal calefactive rate is fast, demonstrating effect is obvious,
But boiling water phenomenon is too fierce, there is certain danger.
Meanwhile, both experimental apparatus are required for the alternating voltage of 220V, and Electrical Safety problem cannot be protected.
Content of the invention
This utility model is to overcome drawbacks described above, providing a kind of simplicity intuitively vortex heat demonstration teaching aid.
For this reason, the technical solution adopted in the utility model is such：A kind of vortex heat demonstration teaching aid, its feature exists
In：It includes a base, and base is placed with the different metal tube of some diameters, is wound around enamel-covered wire thus forming line outside metal tube
Circle；It also includes the metal bar being placed in described metal tube, and metal bar is made up of iron core and insulated handle, uniformly applies outside iron core
It is wiped with heat discoloration ink.
Further, it is provided with round insulation pad between described base and metal tube.
When this utility model uses, metal bar is inserted in coil, then to coil electricity, now in iron core, produce whirlpool
Stream, begins to warm up；Take out metal bar after a period of time, observe the discoloration of its heat discoloration ink.
This utility model utilizes the chromogenic reaction of temperature-sensing color-changing material, by within a certain period of time, iron core in different coils
Discoloration it can be deduced that number of turn of different internal coil diameter sizes and coil etc. can affect be vortexed heat effect.We
The relation between them can also be studied further.Thus quickly allowing student be familiar with the knowledge of electromagnetism and calorifics, to student
Classroom take enjoyment, present the heat effect of vortex more visual in imagely, bring sense of reality to student.
Brief description
Fig. 1 is schematic diagram of the present utility model.
Specific embodiment
Referring to accompanying drawing.The present embodiment includes base 5, base 5 is placed with the different metal tube of some diameters 3, in base 5
It is provided with wooden circular pad 4 and metal tube 3 between, thus forming coil, metal tube top is cased with carrying the outer enamel-covered wire that is wound around of metal tube 3
The wooden circular pad of through hole, described through hole and metal tube external diameter are corresponding；Embodiment also includes the gold being placed in described metal tube
Belong to rod, metal bar is made up of iron core 2 and insulated handle 1, the outer uniform application of iron core has temperature-sensitive color shifting ink.
It is divided into four steps during demonstration：
（1）Instrument is connected high-current ac power, obtains the larger alternating current of numerical value；
（2）In the middle of iron core insertion coil, prepare heating；
（3）Turn on the power switch, produce vortex in iron core, begin to warm up；
（4）Wait for a period of time, observe temperature sensing material variable color.
Finally, experimental phenomena is explained and illustrated.After alternating current on coil leads to, in cylinder-shaped iron core, produce whirlpool
After stream heat effect, the color of heat discoloration ink can be bleached by powder, thus can very be visually observed that vortex heat.
Meanwhile, by changing the bundle number of coil, obtain the time of the different temperature sensing ink variable colors pricked on metal bar in number coil.
Claims (2)
1. a kind of vortex heat demonstration teaching aid it is characterised in that：It includes a base, base is placed with some diameters different
Metal tube, outside metal tube be wound around enamel-covered wire thus forming coil；It also includes the metal bar being placed in described metal tube, gold
Belong to rod to be made up of iron core and insulated handle, the outer uniform application of iron core has temperature-sensitive color shifting ink.
2. according to a kind of vortex heat demonstration teaching aid described in claim 1 it is characterised in that：Described base and metal tube it
Between be provided with round insulation pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620397508.4U CN205992351U (en) | 2016-05-05 | 2016-05-05 | A kind of vortex heat demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620397508.4U CN205992351U (en) | 2016-05-05 | 2016-05-05 | A kind of vortex heat demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992351U true CN205992351U (en) | 2017-03-01 |
Family
ID=58101823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620397508.4U Expired - Fee Related CN205992351U (en) | 2016-05-05 | 2016-05-05 | A kind of vortex heat demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992351U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952555A (en) * | 2017-04-13 | 2017-07-14 | 佛山市顺德区速惠尔电器有限公司 | A kind of demonstration machine for being used to demonstrate Electromagnetic Heating |
| CN111724666A (en) * | 2020-07-01 | 2020-09-29 | 天津市第三中心医院 | A imitative body model for simulating clinical tumour heat ablation treatment |
-
2016
- 2016-05-05 CN CN201620397508.4U patent/CN205992351U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952555A (en) * | 2017-04-13 | 2017-07-14 | 佛山市顺德区速惠尔电器有限公司 | A kind of demonstration machine for being used to demonstrate Electromagnetic Heating |
| CN111724666A (en) * | 2020-07-01 | 2020-09-29 | 天津市第三中心医院 | A imitative body model for simulating clinical tumour heat ablation treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20180505 |