CN2755700Y - Air flow demonstrating box - Google Patents
Air flow demonstrating box Download PDFInfo
- Publication number
- CN2755700Y CN2755700Y CN 200420111763 CN200420111763U CN2755700Y CN 2755700 Y CN2755700 Y CN 2755700Y CN 200420111763 CN200420111763 CN 200420111763 CN 200420111763 U CN200420111763 U CN 200420111763U CN 2755700 Y CN2755700 Y CN 2755700Y
- Authority
- CN
- China
- Prior art keywords
- air flow
- box
- air
- utility
- model
- 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
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- Special Spraying Apparatus (AREA)
Abstract
The utility model relates to an air flow demonstrating box, and the purpose of which is to provide a teaching appliance capable of displaying the varying effects of the air pressure by smoke flow. The utility model relates to the air flow demonstrating box. The utility model is characterized in that the air flow demonstrating box is composed of a box body with a transparent front surface. One side of the box body is provided with an opening and a smoke device. The top part of another side of the box body is communicated with an air pipe. The air flow demonstrating box of the utility model has simple structure. A candle arranged under the air pipe in the box body is ignited, thus air flow in the box body is heated and flows to the air pipe, and the smoke is driven for demonstrating the flowing effect of the airflow.
Description
Technical field
The utility model relates to a kind of teaching demonstration instrument.
Background technology
Directional flow for air pressure size variation generation air-flow in the existing physics teaching lacks demonstration instrument intuitively, is unfavorable for the understand and master of student to principle.
Summary of the invention
The purpose of a kind of air-flow demonstration box of the utility model provides the effect that a kind of instruments used for education can pass through the FLOW VISUALIZATION air pressure size variation of smog.A kind of air-flow demonstration box of the utility model is characterized in that it is to be made of the transparent casing in front, at a side opening of described casing and a smoking device is installed, connects a tracheae at the top of casing opposite side.A kind of air-flow demonstration box of the utility model is simple in structure, by placing the candle of lighting under the tracheae in casing, is flowed in the air-flow heating back in the casing to tracheae, drives the effect of smog demonstration air current flow.
Description of drawings
Fig. 1 is the structural representation of a kind of air-flow demonstration box of the utility model,
Embodiment
As shown in Figure 1, a side opening of the casing 1 that the front is transparent is also installed a smoking device 2, connects a tracheae 3 at the top of casing opposite side, and the smog of placing the candle 4 drive smoking devices of lighting 2 by tracheae in casing 1 for 3 times flows outside tracheae.
Claims (1)
1, a kind of air-flow demonstration box of the utility model is characterized in that it is to be made of the transparent casing in front, at a side opening of described casing and a smoking device is installed, connects a tracheae at the top of casing opposite side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111763 CN2755700Y (en) | 2004-11-27 | 2004-11-27 | Air flow demonstrating box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111763 CN2755700Y (en) | 2004-11-27 | 2004-11-27 | Air flow demonstrating box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2755700Y true CN2755700Y (en) | 2006-02-01 |
Family
ID=35929326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420111763 Expired - Fee Related CN2755700Y (en) | 2004-11-27 | 2004-11-27 | Air flow demonstrating box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2755700Y (en) |
-
2004
- 2004-11-27 CN CN 200420111763 patent/CN2755700Y/en not_active Expired - Fee Related
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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 |