CN2757257Y - Hot air rising demonstration device - Google Patents
Hot air rising demonstration device Download PDFInfo
- Publication number
- CN2757257Y CN2757257Y CN 200420109076 CN200420109076U CN2757257Y CN 2757257 Y CN2757257 Y CN 2757257Y CN 200420109076 CN200420109076 CN 200420109076 CN 200420109076 U CN200420109076 U CN 200420109076U CN 2757257 Y CN2757257 Y CN 2757257Y
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- CN
- China
- Prior art keywords
- wing wheel
- wheel
- hot air
- multiple wing
- air rising
- 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
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Abstract
The utility model relates to a hot air rising demonstration device, relating to an education demonstration appliance, which is composed of a desk lamp seat and a special lamp cover, wherein the lamp cover forms a conical table shape; the side face of the conical table is enclosed; the lower bottom of the conical table is hollow; the upper top of the conical table is provided with a multi-wing wheel; the multi-wing wheel has radial wings which are slightly inclined; a downward concave pit is arranged on the wheel central position of the multi-wing wheel; a supporting frame of the lamp cover is two circular rings which can be clamped on the outer wall of a lamp and have the same diameters; the upper connecting point parts of the two circular rings erect a root of a vertical straight rod; the upper spire end of the straight rod can just be butted in the concave pit on the wheel central position of the multi-wing wheel. The hot air rising demonstration device which is adopted has the advantage that the phenomena of hot air rise and doing work can be visually sawn. Meanwhile, the experimental device is a safety experimental device for students to use hands personally.
Description
Technical field:
The utility model relates to a kind of education demonstration equipment.
Background technology:
Usually teacher uses a paper snake and is placed on the candle flame top when making the air-flow strength that is produced when hot-air rises, and the paper snake promptly can swing; After the blowing-out of candle fire, the paper snake is just motionless.The reason that the air that the student is understood be heated can rise upward.In TV, people also see that through regular meeting the flame of hot air balloon drives the activity of balloon navigation, and the principle that hot-air rises has been described.But the candle fire is fairly simple with the experiment of paper snake, but dangerous, is not an experimental provision that can supply the safety of numerous students operation in school; And the hot air balloon navigation can not be made general experimental provision.
Summary of the invention:
At the deficiencies in the prior art, a kind of hot-air rising demonstration device now is provided, it is made up of a lamp stand and a special lampshade.
The bulb of using on the lamp stand with 100 watts for appropriate;
Lampshade is a taper type, and the side of frustum is sealed, and going to the bottom of frustum is empty, and the top of going up of frustum is provided with the multiple wing wheel, and the multiple wing wheel has a roughly the same shape of pinwheel, its radial fin slightly to tilt, and generally establishes 6-11 and props up fin; Establish a pit downwards on the wheel center of multiple wing wheel, this pit is as the strong point of Lamp shade holder straight-bar.
Lamp shade holder is processed with iron wire, two two circles that same diameter is arranged that can be clamped on the bulb outer wall are arranged down, a vertical straight-bar is holded up at the tie point place, top of two circles, and the last pointed tip of this straight-bar just in time can withstand in the pit at wheel center of lampshade multiple wing wheel.Require Lamp shade holder after clamping bulb, its straight-bar must be vertical with desktop; Simultaneously, require multiple wing wheel lampshade by straight-bar jack-up the time, lampshade must place the top of straight-bar evenly.
During use, only behind the attaching plug connection power supply of need with lamp stand, open light switch, bulb one is bright, and the multiple wing wheel lampshade of bulb top promptly can begin rotation, until ceaselessly rotating with a fixed speed, until cutting off the electricity supply, close the bulb rear and can stop the rotation.The experimental provision that this air-flow that utilizes hot-air to rise drives the lampshade rotation is a kind of experimental provision very directly perceived and safe.
The beneficial effect that adopts hot-air rising demonstration device is to find out intuitively that but hot-air rises and the phenomenon of work done.Simultaneously, this experimental provision is a kind of safe experimental provision that can supply the student to take action on one's own.
Description of drawings:
Accompanying drawing is the structural representation of hot-air rising demonstration device.
Embodiment:
Hot-air rising demonstration device is made up of a lamp stand 1 and a special lampshade 2.The bulb of using on the lamp stand 1 with 100 watts for appropriate;
Lampshade 2 is taper types, and the side of frustum is sealed, and going to the bottom of frustum is empty, and the top of going up of frustum is provided with multiple wing wheel 3, and multiple wing wheel 3 has a roughly the same shape of pinwheel, and its radial fin slightly tilts, and generally establishes 6-11 and props up fin; Establish downwards a pit 4 on the wheel center of multiple wing wheel 3, this pit 4 is as the strong point of Lamp shade holder straight-bar 5.
The processing of Lamp shade holder 6 usefulness iron wires, two two circles that same diameter is arranged that can be clamped on the bulb outer wall are arranged down, a vertical straight-bar 5 is holded up at the tie point place, top of two circles, and the last pointed tip of this straight-bar 5 just in time can withstand in the wheel center pit 4 of lampshade multiple wing wheel 3.
Claims (1)
1, hot-air rising demonstration device is by thermal source, and the hot-air receiving device is formed, and it is characterized in that hot-air rising demonstration device has a lamp stand (1) and a multiple wing wheel lampshade (2);
Multiple wing wheel lampshade (2) is a taper type, the side of frustum is sealed, and going to the bottom of frustum is empty, the top of going up of frustum is provided with multiple wing wheel (3), multiple wing wheel (3) has fin radial and that slightly tilt, fin is established 6-11 and is propped up, and establishes downwards a pit (4) on the wheel center of multiple wing wheel (3);
Lamp shade holder (6) is that the below has two circles that same diameter is arranged that can be clamped on the bulb outer wall, a vertical straight-bar (5) is holded up at the tie point place, top of two circles, and the last pointed tip of this straight-bar 5 just in time can withstand in the wheel center pit (4) of lampshade multiple wing wheel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109076 CN2757257Y (en) | 2004-11-19 | 2004-11-19 | Hot air rising demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420109076 CN2757257Y (en) | 2004-11-19 | 2004-11-19 | Hot air rising demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2757257Y true CN2757257Y (en) | 2006-02-08 |
Family
ID=35965644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420109076 Expired - Fee Related CN2757257Y (en) | 2004-11-19 | 2004-11-19 | Hot air rising demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2757257Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448528A (en) * | 2018-11-15 | 2019-03-08 | 安徽徽煌教育科技有限公司 | A kind of geographical teaching wind direction apparatus for demonstrating |
-
2004
- 2004-11-19 CN CN 200420109076 patent/CN2757257Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448528A (en) * | 2018-11-15 | 2019-03-08 | 安徽徽煌教育科技有限公司 | A kind of geographical teaching wind direction apparatus for demonstrating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |