CN201126655Y - Convection barrel demonstration machine - Google Patents
Convection barrel demonstration machine Download PDFInfo
- Publication number
- CN201126655Y CN201126655Y CNU2007200165885U CN200720016588U CN201126655Y CN 201126655 Y CN201126655 Y CN 201126655Y CN U2007200165885 U CNU2007200165885 U CN U2007200165885U CN 200720016588 U CN200720016588 U CN 200720016588U CN 201126655 Y CN201126655 Y CN 201126655Y
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- CN
- China
- Prior art keywords
- glass cylinder
- glass infuser
- hole
- heat source
- utility
- 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
A convection cylinder demonstrator is disclosed, characterized in that the demonstrator has a base to which a glass cylinder is vertical, bottom within the glass cylinder is provided with a heat source, sidewall of the glass cylinder at the heat source is provided with a vent hole that is provided with a rubber plug; upper part of the heat source within the glass cylinder is provided with a separation plate whose upper part is provided with at least one through hole, a fulcrum bar traverse the through hole, two ends of the fulcrum bar are disposed on the opening on top of the glass cylinder. With simple structure and strong operability, the utility model can visually demonstrate the relationship of air convection, which not only facilitates teacher to complete teaching mission fast and conveniently, but improves practical ability and study interest of the students, consequentially, the utility model offers large help to the students in cultivating the abilities about problem analysis and solving.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly relates to the cross-ventilated convective tube demonstration device of a kind of demonstration, is to having replenishing of physics teaching in secondary school apparatus kind now, belonging to the school supply and stationery category.
Background technology
At present, middle school teaching apparatus kind is a lot, but function singlenesses all just designs at the content that needs separately to show.In junior middle school physics teaching, make the student grasp cross-ventilated knowledge by experiment, it is very important content in the physics teaching, yet be again one of the important of physics lesson and the course of beyonding one's depth, student and teacher press for teaching aid targetedly, existing convection experiment is the experiment equipment complexity not only, operation inconvenience, and experimental phenomena is directly perceived inadequately, be difficult to make student's cross-ventilated proof procedure that undergoes, thereby bring certain difficulty to teaching, even have influence on student performance and learning interest.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, improves by research, provides the cross-ventilated convective tube demonstration device of a kind of demonstration.This novel convective tube demonstration device is simple in structure, workable, can demonstrate cross-ventilated relation intuitively, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
The technical scheme that the utility model provides is: this convective tube demonstration device, be characterized in a base, erect on the base glass infuser is arranged, bottom in the glass infuser is provided with thermal source, and the sidewall of the glass infuser at thermal source place is provided with air vent, is provided with rubber stopper in the air vent, thermal source top in the glass infuser is provided with a division board, division board top is provided with at least one through hole, is installed with pole in the through hole, and the two ends of pole ride on glass infuser top uncovered.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, workable, can demonstrate cross-ventilated relation intuitively, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
Description of drawings
Figure is the structural representation that the utility model provides embodiment.
Embodiment
As shown in the figure, this convective tube demonstration device, a base 5 is arranged, and erectting on the base 5 has glass infuser 3, and the bottom in the glass infuser 3 is provided with the candle 7 as thermal source, the sidewall of the glass infuser at candle 7 places is provided with air vent 4, be provided with rubber stopper 6 in the air vent 4, candle 7 tops in the glass infuser 3 are provided with a division board 2, and division board 2 tops are provided with at least one through hole 8, be installed with pole 1 in the through hole 8, the two ends of pole 1 ride over glass infuser 3 tops uncovered 9 on.
During demonstration, first lighted candle 7 is pulled up the rubber stopper 6 in the air vent 4, make candle 7 energy normal combustion, when showing that the hot-air that produces when candle 7 burns in glass infuser 3 constantly rises, glass infuser 3 outer cold airs constantly enter in the glass infuser 3 by air vent 4, have formed cross-ventilation.If the stifled rubber stopper of going up in the air vent 46, not convection current of air, then candle 7 extinguishes gradually.If the stifled rubber stopper of going up in the air vent 46, and with division board 2 be placed on glass infuser 3 tops uncovered 9 on, division board 2 is divided into two parts with the upper space in the glass infuser 3, at this moment, candle 7 can not extinguish, this be because air by glass infuser 3 internal upper parts two segregate semicylinder spaces and glass infuser 3 in bottoms form cross-ventilated cause.
Claims (1)
1. convective tube demonstration device, it is characterized in that having a base, erect on the base glass infuser is arranged, bottom in the glass infuser is provided with thermal source, and the sidewall of the glass infuser at thermal source place is provided with air vent, is provided with rubber stopper in the air vent, thermal source top in the glass infuser is provided with a division board, division board top is provided with at least one through hole, is installed with pole in the through hole, and the two ends of pole ride on glass infuser top uncovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200165885U CN201126655Y (en) | 2007-12-10 | 2007-12-10 | Convection barrel demonstration machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200165885U CN201126655Y (en) | 2007-12-10 | 2007-12-10 | Convection barrel demonstration machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126655Y true CN201126655Y (en) | 2008-10-01 |
Family
ID=40000122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200165885U Expired - Fee Related CN201126655Y (en) | 2007-12-10 | 2007-12-10 | Convection barrel demonstration machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126655Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210025807A (en) * | 2019-08-28 | 2021-03-10 | 이태준 | Visual Checkable Convection Experimental Device |
-
2007
- 2007-12-10 CN CNU2007200165885U patent/CN201126655Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210025807A (en) * | 2019-08-28 | 2021-03-10 | 이태준 | Visual Checkable Convection Experimental Device |
| KR102269115B1 (en) | 2019-08-28 | 2021-06-24 | 이태준 | Visual Checkable Convection Experimental Device |
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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 |