CN201812411U - Hot air rise demonstrator - Google Patents
Hot air rise demonstrator Download PDFInfo
- Publication number
- CN201812411U CN201812411U CN2010205662405U CN201020566240U CN201812411U CN 201812411 U CN201812411 U CN 201812411U CN 2010205662405 U CN2010205662405 U CN 2010205662405U CN 201020566240 U CN201020566240 U CN 201020566240U CN 201812411 U CN201812411 U CN 201812411U
- Authority
- CN
- China
- Prior art keywords
- hot air
- glass tube
- air
- hot
- air rise
- 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
- 239000011521 glass Substances 0.000 claims abstract description 33
- 230000000630 rising effect Effects 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- 241000270295 Serpentes Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- Illuminated Signs And Luminous Advertising (AREA)
Abstract
In order to visually demonstrate the phenomenon of hot air rise and ensure that students can clearly and visually observe the phenomenon of the hot air rise, the utility model provides a hot air rise demonstrator. The hot air rise demonstrator comprises an alcohol lamp, a glass cover, a glass pipe and a round paper sheet, wherein the glass cover covers the alcohol lamp; the glass pipe is connected to the glass cover; the round paper sheet is fixed in the glass pipe through filaments but can move along the length direction of the glass pipe; and the bottom of the glass cover is provided with an air inlet. The hot air rise demonstrator can visually demonstrate the phenomenon of the hot air rise and ensure that the students can clearly and visually observe and know the phenomenon of the hot air rise.
Description
Technical field
The utility model relates to instruments used for education, specially refers to the hot-air rising demonstration device that uses in primary school's " nature ", the education of " science " course.
Background technology
The teaching of hot-air part knowledge is arranged in primary school's " nature ", " science " teaching material.Lighter than cold air at the explanation hot-air, in the teaching that can rise, the method that teaching material generally adopts is: cut a paper snake with paper, the paper snake is lifted above the spirit lamp that is firing, see that paper snake waving under hot-air drives proves.This method hot-air disperses, and puts improperly as paper snake position, and experiment effect is very not obvious.In addition, the student sees that waving of paper snake is not easy also to understand intuitively that floating of hot-air causes.In a word, such demonstration is only directly perceived, vivid, is difficult for causing student's interest.
Summary of the invention
Be the phenomenon that directly perceived, vivid demonstration hot-air rises, make students can observe the phenomenon that hot-air rises clear, intuitively, the utility model proposes a kind of hot-air rising demonstration device.The utility model hot-air rising demonstration device, comprise: spirit lamp, cloche, glass tube and circular paper, wherein, cloche is buckled on the spirit lamp, glass tube is connected on the cloche, and circular paper in glass tube but can move along the length direction of glass tube, is provided with air admission hole in the bottom of cloche by filament fixed.The phenomenon that adopts demonstration hot-air that the utility model hot-air rising demonstration device can be directly perceived, vivid to rise can allow the student intuitively, clearly observe and understands the phenomenon that hot-air rises.
Description of drawings
Accompanying drawing 1 is the embodiment synoptic diagram of the utility model hot-air rising demonstration device.
Below in conjunction with the drawings and specific embodiments the utility model hot-air rising demonstration device is further described.
Embodiment
Accompanying drawing 1 is the embodiment synoptic diagram of the utility model hot-air rising demonstration device, and among the figure, 1 is spirit lamp, and 2 is cloche, and 3 is glass tube, and 4 are the fixing filament of circular paper, and 5 is circular paper, and 6 is the air admission hole of cloche.As seen from the figure, the utility model hot-air rising demonstration device, comprise: spirit lamp 1, cloche 2, glass tube 3 and circular paper 5, wherein, cloche 2 is buckled on the spirit lamp 1, and glass tube 3 is connected on the cloche 2, circular paper 5 is fixed in the glass tube by filament 4 but can moves along the length direction of glass tube, is provided with air admission hole 6 in the bottom of cloche 2.Before demonstration, need earlier circular paper 5 usefulness filaments 4 to be fixed in the glass tube 3.Concrete grammar is to cut the circular paper 5 that a diameter is slightly less than the glass tube internal diameter, and cuts a hole at circle centre position.Pass circular paper 5 center pits and filament 4 two are fixed on glass tube 3 two ends with filament 4, and make filament 4 be in center in the glass tube 3.Circular paper 5 is fixed in the glass tube 3 like this, and can move along glass tube 3 length directions.Then, again glass tube 3 is fixed on the cloche 2.When demonstrating, earlier spirit lamp 1 is lighted, again cloche 2 is buckled on the spirit lamp 1 together with glass tube 3, at this moment, toward rising, the circular paper 5 that promotes in the glass tube 3 moves up because the air in the cloche 2 is heated.Spirit lamp 1 is picked up and left to cloche 2 together with glass tube 3, do not have hot-air to move up in the glass tube 3, circular paper 5 will fall and be in glass tube 3 bottom.For the spontaneous current that guarantees air passes to and the spirit lamp flame burning, needing constantly provides air in cloche 2, therefore, be provided with air admission hole 6 in the bottom of cloche 2.
Obviously, the phenomenon that adopts demonstration hot-air that the utility model hot-air rising demonstration device can be directly perceived, vivid to rise can allow the student intuitively, clearly observe and understands the phenomenon that hot-air rises.
Claims (1)
1. hot-air rising demonstration device, it is characterized in that: this hot-air rising demonstration device, comprise: spirit lamp, cloche, glass tube and circular paper, wherein, cloche is buckled on the spirit lamp, and glass tube is connected on the cloche, circular paper in glass tube but can move along the length direction of glass tube, is provided with air admission hole in the bottom of cloche by filament fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205662405U CN201812411U (en) | 2010-10-19 | 2010-10-19 | Hot air rise demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205662405U CN201812411U (en) | 2010-10-19 | 2010-10-19 | Hot air rise demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812411U true CN201812411U (en) | 2011-04-27 |
Family
ID=43895350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205662405U Expired - Fee Related CN201812411U (en) | 2010-10-19 | 2010-10-19 | Hot air rise demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351036A (en) * | 2018-12-20 | 2020-06-30 | 爱烙达股份有限公司 | Non-overheating combustion device |
-
2010
- 2010-10-19 CN CN2010205662405U patent/CN201812411U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351036A (en) * | 2018-12-20 | 2020-06-30 | 爱烙达股份有限公司 | Non-overheating combustion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110427 Termination date: 20111019 |