CN102944749A - Resistance temperature coefficient tester capable of dissipating heat quickly - Google Patents
Resistance temperature coefficient tester capable of dissipating heat quickly Download PDFInfo
- Publication number
- CN102944749A CN102944749A CN 201210481672 CN201210481672A CN102944749A CN 102944749 A CN102944749 A CN 102944749A CN 201210481672 CN201210481672 CN 201210481672 CN 201210481672 A CN201210481672 A CN 201210481672A CN 102944749 A CN102944749 A CN 102944749A
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- ceramic cylinder
- fan
- baffle
- instrument shell
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Abstract
A resistance temperature coefficient tester capable of dissipating heat quickly comprises a ceramic cylinder, a baffle, a semi-conductor refrigerating plate, a fan and heat dissipating holes. A plurality of circles of electric heating wires are wound in the inner wall of the ceramic cylinder which is fixedly connected with a tester casing through two first fixing supports. The baffle is a thin round plate and is movably connected with the top at the right end of the ceramic cylinder through a pin. The semi-conductor refrigerating plate is fixedly connected with the tester casing through a second fixing support, and a refrigerating surface is positioned under the semi-conductor refrigerating plate. The fan is fixed on the tester casing through a third fixing support and positioned on the left side below the semi-conductor refrigerating plate, and the horizontal central line of the fan coincides with the horizontal central line of the ceramic cylinder. A plurality of heat dissipating holes are positioned on the right lateral face and the upper lateral face of the tester casing. The baffle is made of high-temperature resistant plastics, and the diameter of the baffle is equal to the outer diameter of the ceramic cylinder. The resistance temperature coefficient tester capable of dissipating heat quickly has the advantages of being simple, convenient, practical, safe and obvious in experiment effect.
Description
Technical field
The invention belongs to the physical experiment apparatus field, but relate to a kind of temperature-coefficient of electrical resistance analyzer of quick heat radiating.
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Background technology
Temperature-coefficient of electrical resistance mensuration is an important experimental project in the Experiment of College Physics, the temperature of resistance is controlled by the temperature-coefficient of electrical resistance analyzer, after resistance, temperature sensor all are soldered on the circuit board, be fixed on again in the ceramic cylinder that is wound with heating wire in the sidewall, heating wire work, the ceramic cylinder temperature raises, and the temperature of resistance increases.Because the ceramic cylinder heat radiation is slow, in case be heated to higher temperature, need could lower temperature for a long time, after the student has surveyed high-temperature data, think to go again to survey the data of certain lower temperature, often need very long wait, waste experimenter's plenty of time.
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Summary of the invention
In order to solve the problem of existence, but the purpose of this invention is to provide a kind of temperature-coefficient of electrical resistance analyzer of quick heat radiating, for the experimenter brings convenience.
The technical solution adopted for the present invention to solve the technical problems is: but the temperature-coefficient of electrical resistance analyzer of quick heat radiating, comprise ceramic cylinder, baffle plate, semiconductor chilling plate, fan and louvre, be full of the multi-turn heating wire in the described ceramic cylinder sidewall, ceramic cylinder is fixedly connected with Instrument shell by two the first fixed mounts, described baffle plate is thin discs, be connected with ceramic cylinder right-hand member top movable by bearing pin, described semiconductor chilling plate is fixedly connected with Instrument shell by the second fixed mount, it is chill surface below it, described fan is fixed on the Instrument shell by the 3rd fixed mount and satisfies: fan is positioned at left side, semiconductor chilling plate below, its horizontal center line overlaps with the horizontal center line of ceramic cylinder, described a plurality of louvre is positioned at right flank and the upper side of Instrument shell, and described baffle plate is made by high-temperature resistance plastice, and its diameter equals the external diameter of ceramic cylinder.
During use, the power supply of opening heating wire makes its work, and the ceramic cylinder temperature raises, and the resistance temperature that is fixed on the circuit board increases, and baffle plate is vertical because of Action of Gravity Field, is pasting the ceramic cylinder right flank, stops hot-air convection in the ceramic cylinder; When the needs fast cooling, disconnect the power supply of heating wire, make its stopped heating, open the power supply of semiconductor chilling plate and fan, semiconductor chilling plate work refrigeration, its below air themperature is reduced, fan work wind that temperature is lower is to ceramic cylinder, and baffle plate turns right under the wind-force effect, and the hot-air in the ceramic cylinder just can flow out to the right, by louvre heat is shed, reach the purpose of rapid cooling.
The invention has the beneficial effects as follows, simple and convenient practicality, experiment effect is obvious, safety.
Description of drawings
Fig. 1 is structure tangent plane schematic diagram of the present invention.
Among the figure: 1-heating wire 2-louvre 3-baffle plate 4-bearing pin 5-housing 6-the first fixed mount 7-ceramic cylinder 8-semiconductor chilling plate 9-the second fixed mount 10-the 3rd fixed mount 11-fan 12-circuit board
Embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing:
As shown in Figure 1, but the temperature-coefficient of electrical resistance analyzer of the present invention's quick heat radiating, comprise ceramic cylinder 7, baffle plate 3, semiconductor chilling plate 8, fan 11 and louvre 2, be full of multi-turn heating wire 1 in described ceramic cylinder 7 sidewalls, ceramic cylinder 7 is fixedly connected with Instrument shell 5 by two the first fixed mounts 6, described baffle plate 3 is thin discs, be connected with ceramic cylinder 7 right-hand member top movable by bearing pin 4, described semiconductor chilling plate 8 is fixedly connected with Instrument shell 5 by the second fixed mount 9, it is chill surface below it, described fan 11 is fixed on the Instrument shell 5 by the 3rd fixed mount 10 and satisfies: fan 11 is positioned at left side, semiconductor chilling plate 8 belows, and its horizontal center line overlaps with the horizontal center line of ceramic cylinder 7, and described a plurality of louvres 2 are positioned at right flank and the upper side of Instrument shell 5, described baffle plate 3 is made by high-temperature resistance plastice, and its diameter equals the external diameter of ceramic cylinder 7.
During use, the power supply of opening heating wire 1 makes its work, and ceramic cylinder 7 temperature raise, and the resistance temperature that is fixed on the circuit board 12 increases, and baffle plate 3 is vertical because of Action of Gravity Field, is pasting ceramic cylinder 7 right flanks, stops ceramic cylinder 7 interior hot-air convections; When the needs fast cooling, disconnect the power supply of heating wire 1, make its stopped heating, open the power supply of semiconductor chilling plate 8 and fan 11, semiconductor chilling plate 8 work refrigeration, its below air themperature is reduced, fan 11 is worked the wind that temperature is lower to ceramic cylinder 7, and baffle plate 3 turns right under the wind-force effect, and the hot-airs in the ceramic cylinder 7 just can flow out to the right, by louvre 2 heat is shed, reach the purpose of rapid cooling.
Claims (2)
1. but the temperature-coefficient of electrical resistance analyzer of quick heat radiating, comprise ceramic cylinder, baffle plate, semiconductor chilling plate, fan and louvre, be full of the multi-turn heating wire in the described ceramic cylinder sidewall, ceramic cylinder is fixedly connected with Instrument shell by two the first fixed mounts, described baffle plate is thin discs, be connected with ceramic cylinder right-hand member top movable by bearing pin, described semiconductor chilling plate is fixedly connected with Instrument shell by the second fixed mount, it is chill surface below it, described fan is fixed on the Instrument shell by the 3rd fixed mount and satisfies: fan is positioned at left side, semiconductor chilling plate below, and its horizontal center line overlaps with the horizontal center line of ceramic cylinder, and described a plurality of louvres are positioned at right flank and the upper side of Instrument shell.
But 2. the thermopair thermoelectric coefficient analyzer of fast cooling according to claim 1, it is characterized in that: described baffle plate is made by high-temperature resistance plastice, and its diameter equals the external diameter of ceramic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210481672 CN102944749A (en) | 2012-11-24 | 2012-11-24 | Resistance temperature coefficient tester capable of dissipating heat quickly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210481672 CN102944749A (en) | 2012-11-24 | 2012-11-24 | Resistance temperature coefficient tester capable of dissipating heat quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102944749A true CN102944749A (en) | 2013-02-27 |
Family
ID=47727709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210481672 Pending CN102944749A (en) | 2012-11-24 | 2012-11-24 | Resistance temperature coefficient tester capable of dissipating heat quickly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102944749A (en) |
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2012
- 2012-11-24 CN CN 201210481672 patent/CN102944749A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130227 |