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Teaching experimental device about influence of air pressure on boiling point

An experimental device and boiling point technology, applied in teaching models, educational tools, instruments, etc., can solve the problems of inaccurate air pressure control and inconspicuous experimental effects, and achieve the effects of ensuring safety, obvious experimental effects, and precise control

Active Publication Date: 2015-06-03
四川科业教学仪器设备有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this kind of teaching experiment equipment controls the air pressure in the flat-bottomed flask through the syringe, not only the air pressure control is inaccurate, the experimental effect is not obvious, but also there are serious safety hazards

Method used

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  • Teaching experimental device about influence of air pressure on boiling point

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Embodiment Construction

[0019] refer to figure 1 , a kind of teaching experiment device about the influence of air pressure on boiling point of the present invention, comprises airtight chamber 15, is placed with water container 3 in airtight chamber 15, and is used for heating the heater 4 of water container 3, heats water container by heater 4 3 of the water, bring to a boil.

[0020] An air compressor 11, an air pressure controller 10 and a vacuum pump 7 connected in sequence are arranged outside the airtight chamber 15, and the air compressor 11, the air pressure controller 10 and the vacuum pump 7 are also connected to the airtight chamber 15 respectively, and the air compressor 11 and the airtight chamber A valve one 12 is also arranged on the connecting pipeline of 15, and a valve two 6 is also arranged on the connecting pipeline between the vacuum pump 7 and the airtight chamber 15. The air pressure in the airtight chamber 15 is detected by the air pressure controller 10, and the air compres...

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Abstract

The invention discloses a teaching experimental device about influence of air pressure on a boiling point, comprising an air-tight chamber; a water container is arranged in the air-tight chamber, and a heater used for heating the water container is also arranged in the air-tight chamber; an air compressor, an air pressure controller and a vacuum pump that are successively connected are arranged out of the air-tight chamber; the air compressor, the air pressure controller and the vacuum pump are further respectively connected with the air-tight chamber; a CCD (charge coupled device) camera and a CCD display are further arranged out of the air-tight chamber; the CCD camera is fixed out of the air-tight chamber, so as to collect boiling point change images of water in the water container; and the CCD camera is connected with the CCD display. The teaching experimental device disclosed by the invention not only clearly expresses the influence of the air pressure on the boiling point, but also has a higher safety coefficient.

Description

technical field [0001] The invention belongs to a demonstration experiment device in primary and middle school physics / natural science teaching, in particular to a teaching experiment device about the influence of air pressure on boiling point. Background technique [0002] As we all know, the air pressure has a great influence on the boiling point. Where the air pressure is high, the corresponding boiling point is low; where the air pressure is low, the corresponding boiling point is high. In the teaching of physics or natural science in primary and middle schools, in order to make it easier for students to understand the influence of air pressure on boiling point, such a teaching experimental device is usually used: use a flat-bottomed flask to fill water, heat it with an alcohol lamp below, and observe its temperature at normal pressure. The time required for boiling under state. In order to observe the boiling of water under low pressure or high pressure, a syringe is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/12
CPCG09B23/16
Inventor 毛翔宇杨晓林王琴
Owner 四川科业教学仪器设备有限责任公司
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