CN202939221U - Resistance temperature coefficient tester capable of dissipating heat quickly - Google Patents
Resistance temperature coefficient tester capable of dissipating heat quickly Download PDFInfo
- Publication number
- CN202939221U CN202939221U CN 201220626676 CN201220626676U CN202939221U CN 202939221 U CN202939221 U CN 202939221U CN 201220626676 CN201220626676 CN 201220626676 CN 201220626676 U CN201220626676 U CN 201220626676U CN 202939221 U CN202939221 U CN 202939221U
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- ceramic cylinder
- fan
- temperature
- baffle
- semi
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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. Multiple rings of electric heating wires are wound in a side wall of the ceramic cylinder which is fixedly connected with a tester casing through two first fixing racks. 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 rack, and a refrigerating surface is positioned under the semi-conductor refrigerating plate. The fan is fixed on the tester casing through a third fixing rack 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. Multiple 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 is simple, convenient and practical, and is safe and obvious in experiment effect.
Description
Technical field
The utility model belongs to the physical experiment apparatus field, but relates to a kind of temperature-coefficient of electrical resistance analyzer of quick heat radiating.
Background technology
It is an important experimental project in Experiment of College Physics that temperature-coefficient of electrical resistance is measured, the temperature of resistance is controlled by the temperature-coefficient of electrical resistance analyzer, after resistance, temperature sensor all are soldered on circuit board, be fixed on again in sidewall in the ceramic cylinder that is wound with heating wire, heating wire work, the ceramic cylinder temperature raises, and the temperature of resistance increases.Because the ceramic cylinder heat radiation is slow, once 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.
Summary of the invention
In order to solve the problem of existence, but the purpose of this utility model is to provide a kind of temperature-coefficient of electrical resistance analyzer of quick heat radiating, for the experimenter brings convenience.
The utility model solves the technical scheme that its technical matters adopts: but the temperature-coefficient of electrical resistance analyzer of quick heat radiating, comprise ceramic cylinder, baffle plate, semiconductor chilling plate, fan and louvre, be wound with the multi-turn heating wire in described ceramic cylinder sidewall, ceramic cylinder is fixedly connected with Instrument shell by two the first fixed mounts, described baffle plate is thin discs, by bearing pin, with ceramic cylinder right-hand member top movable, be connected, described semiconductor chilling plate is fixedly connected with Instrument shell by the second fixed mount, it below it, is chill surface, described fan is fixed on Instrument shell and meets by the 3rd fixed mount: fan is positioned at left side, semiconductor chilling plate below, its horizontal center line overlaps with the horizontal center line of ceramic cylinder, a plurality of described louvres are positioned at right flank and the upper side of Instrument shell, described baffle plate is made by high-temperature resistance plastice, 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 be fixed on 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 ceramic cylinder; When the needs fast cooling, disconnect the power supply of heating wire, make it stop 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 ceramic cylinder just can flow out to the right, by louvre, heat is shed, reach the purpose of rapid cooling.
The beneficial effects of the utility model are, simple and convenient practicality, experiment effect obviously, safety.
The accompanying drawing explanation
Fig. 1 is the utility model structure tangent plane schematic diagram.
In figure: 1-heating wire 2-louvre 3-baffle plate 4-bearing pin 5-housing 6-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
Below in conjunction with accompanying drawing, the utility model is described in more detail:
As shown in Figure 1, but the temperature-coefficient of electrical resistance analyzer of the utility model quick heat radiating, comprise ceramic cylinder 7, baffle plate 3, semiconductor chilling plate 8, fan 11 and louvre 2, be wound with 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, by bearing pin 4, with ceramic cylinder 7 right-hand member top movable, be connected, described semiconductor chilling plate 8 is fixedly connected with Instrument shell 5 by the second fixed mount 9, it below it, is chill surface, described fan 11 is fixed on Instrument shell 5 and meets by the 3rd fixed mount 10: fan 11 is positioned at semiconductor chilling plate 8 left sides, below, its horizontal center line overlaps with the horizontal center line of ceramic cylinder 7, a plurality of described 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, 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 be fixed on circuit board 12 increases, and baffle plate 3 is vertical because of Action of Gravity Field, is pasting ceramic cylinder 7 right flanks, stops the interior hot-air convection of ceramic cylinder 7; When the needs fast cooling, disconnect the power supply of heating wire 1, make it stop 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 work wind that temperature is lower is to ceramic cylinder 7, and baffle plate 3 turns right under the wind-force effect, and the hot-airs in 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 wound with the multi-turn heating wire in described ceramic cylinder sidewall, ceramic cylinder is fixedly connected with Instrument shell by two the first fixed mounts, described baffle plate is thin discs, by bearing pin, with ceramic cylinder right-hand member top movable, be connected, described semiconductor chilling plate is fixedly connected with Instrument shell by the second fixed mount, it below it, is chill surface, described fan is fixed on Instrument shell and meets by the 3rd fixed mount: fan is positioned at left side, semiconductor chilling plate below, its horizontal center line overlaps with the horizontal center line of ceramic cylinder, a plurality of described louvres are positioned at right flank and the upper side of Instrument shell.
But 2. the temperature-coefficient of electrical resistance analyzer of quick heat radiating 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 201220626676 CN202939221U (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 201220626676 CN202939221U (en) | 2012-11-24 | 2012-11-24 | Resistance temperature coefficient tester capable of dissipating heat quickly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939221U true CN202939221U (en) | 2013-05-15 |
Family
ID=48323452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220626676 Expired - Fee Related CN202939221U (en) | 2012-11-24 | 2012-11-24 | Resistance temperature coefficient tester capable of dissipating heat quickly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939221U (en) |
-
2012
- 2012-11-24 CN CN 201220626676 patent/CN202939221U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20131124 |