CN215429138U - Electric heating furnace - Google Patents
Electric heating furnace Download PDFInfo
- Publication number
- CN215429138U CN215429138U CN202121332705.5U CN202121332705U CN215429138U CN 215429138 U CN215429138 U CN 215429138U CN 202121332705 U CN202121332705 U CN 202121332705U CN 215429138 U CN215429138 U CN 215429138U
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- heat conducting
- semiconductor refrigerator
- cold
- graphite plate
- hot working
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Abstract
The utility model relates to the technical field of graphite heating plates, and particularly discloses a heating electric furnace, which comprises heating equipment, a graphite plate and a power supply, wherein the heating equipment, the graphite plate and the power supply are arranged in the heating furnace, the heating equipment is electrically connected with the power supply, and the heating electric furnace is characterized in that: the heating device comprises a semiconductor refrigerator and a heat conducting piece, the semiconductor refrigerator is arranged below the graphite plate, one surface of the semiconductor refrigerator is in heat conducting contact with the bottom surface of the graphite plate so that the top surface of the graphite plate forms a cold and hot working surface, the cold and hot working surface is provided with a fixing part for placing a test tube, the heat conducting piece is arranged below the semiconductor refrigerator, and the other surface of the semiconductor refrigerator is in heat conducting contact with the heat conducting piece. The test tube heating device can be used for heating or cooling the test tube placed on the cold and hot working surface.
Description
Technical Field
The utility model relates to the technical field of graphite heating plates, in particular to a heating electric furnace.
Background
Many steps need heat chemical in the chemical experiment, and in present chemical experiment, mostly adopt graphite heater to heat chemical, but graphite heater only has the heating function, can only heat the test tube, can not refrigerate the test tube.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a heating electric furnace which can heat or refrigerate a test tube.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a heating electric furnace comprises heating equipment, a graphite plate and a power supply, wherein the heating equipment, the graphite plate and the power supply are arranged in the heating furnace, the heating equipment is electrically connected with the power supply, the heating equipment comprises a semiconductor refrigerator and a heat conducting piece, the semiconductor refrigerator is arranged below the graphite plate, one surface of the semiconductor refrigerator is in heat conducting contact with the bottom surface of the graphite plate so that the top surface of the graphite plate forms a cold and hot working surface, the cold and hot working surface is provided with a fixing part for placing a test tube, the heat conducting piece is arranged below the semiconductor refrigerator, and the other surface of the semiconductor refrigerator is in heat conducting contact with the heat conducting piece.
Furthermore, the graphite plate is provided with a countersunk hole, the heat conducting piece is provided with a threaded hole matched with the countersunk hole, a heat insulating sleeve is arranged in the threaded hole, and the graphite plate is locked into the countersunk hole and the heat insulating sleeve through bolts to be fixed with the heat conducting piece.
Furthermore, the cold and hot working face is of a concave structure.
Further, the refrigerator also comprises a slide rheostat, the semiconductor refrigerator is electrically connected with the slide rheostat, and the slide rheostat is electrically connected with a power supply.
Furthermore, still include PLC controller and temperature sensor, temperature sensor locates cold and hot working face, slide rheostat and temperature sensor all are connected with the PLC controller electricity.
Further, the electric heating furnace is provided with heat dissipation holes, and the heat dissipation holes are connected with the heat conducting member.
Furthermore, the fixing part is a round hole arranged on the cold and hot working surface.
The utility model has the beneficial effects that:
by adopting the technical scheme provided by the utility model, the cold and hot working surfaces can be heated or cooled by changing the current flow direction of the semiconductor refrigerator, and then the test tubes placed on the cold and hot working surfaces can be heated or cooled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inside of a heating electric furnace according to the present invention;
description of reference numerals:
1. a graphite plate; 2. a semiconductor refrigerator; 3. a heat conductive member; 4. a cold and hot working surface; 5. a fixed part; 6. a countersunk hole; 7. and (4) bolts.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 and 2, the electric heating furnace comprises a heating device arranged in the heating furnace, a graphite plate 1 and a power supply, wherein the heating device is electrically connected with the power supply. Heating equipment includes semiconductor cooler 2 and heat-conducting piece 3, semiconductor cooler 2 locates the below of graphite cake 1, semiconductor cooler 2's one side and the 1 bottom surface heat conduction contact of graphite cake so that the top surface of graphite cake 1 forms cold and hot working face 4, cold and hot working face 4 is equipped with the fixed part 5 that is used for placing the test tube, fixed part 5 is the round hole of locating cold and hot working face 4, the round hole can be with stable the placing in cold and hot working face 4 of test tube, prevent that the test tube from empting, semiconductor cooler 2's below is located to heat-conducting piece 3, semiconductor cooler 2's another side and the 3 heat conduction contacts of heat-conducting piece. The electric heating furnace of the embodiment is provided with heat dissipation holes, the heat dissipation holes are connected with the heat conducting member 3, and the heat dissipation holes can discharge the temperature in the electric heating furnace body, so that the power supply is prevented from being damaged.
The use principle is as follows:
when the test tube heating device works, if the binding surface of the semiconductor refrigerator 2 and the graphite plate 1 is a heating surface, the binding surface of the semiconductor refrigerator 2 and the heat conducting piece 3 is a refrigerating surface, and the temperature generated by the refrigerating surface of the semiconductor refrigerator 2 is transmitted to the heat conducting piece 3, so that the graphite plate 1 heats and the test tube placed on the graphite plate 1 is heated; on the contrary, if the binding surface of the semiconductor refrigerator 2 and the graphite plate 1 is a refrigerating surface, the contact surface of the semiconductor refrigerator 2 and the heat conducting member 3 is a heating surface, and the heat generated by the heating surface of the semiconductor refrigerator 2 is transmitted to the heat conducting member 3, so that the graphite plate 1 is refrigerated, and the test tube placed on the graphite plate 1 is cooled.
Referring to fig. 2, according to the technical scheme, a countersunk hole 6 is formed in a graphite plate 1, a threaded hole matched with the countersunk hole 6 is formed in a heat conducting piece 3, a heat insulating sleeve (not shown) is arranged in the threaded hole, and the graphite plate 1 is locked into the countersunk hole 6 and the heat insulating sleeve (not shown) through a bolt 7 and is fixed with the heat conducting piece 3.
Adopt this technical scheme, can be with stable the fixing of semiconductor cooler 2 between graphite cake 1 and heat-conducting piece 3, prevent that semiconductor cooler 2 and graphite cake 1 and heat-conducting piece 3 from breaking away from, simultaneously, the setting of radiation shield (not seen in the figure) also can prevent that the temperature on the graphite cake 1 from transmitting to heat-conducting piece 3 through bolt 7.
Referring to fig. 1 and 2, the cold and hot working surface 4 of the present embodiment has a concave structure.
By adopting the technical scheme, the cold and hot working surface 4 is of a concave structure so as to prevent the solution in the test tube from spilling to the outside and polluting the environment.
Referring to fig. 2, the present embodiment further includes a sliding varistor (not shown), the semiconductor refrigerator 2 is electrically connected to the sliding varistor (not shown), and the sliding varistor (not shown) is electrically connected to a power source. By adopting the technical scheme, the arrangement of the slide rheostat (not shown in the figure) can adjust the current of the semiconductor refrigerator 2, and further adjust the working temperature of the semiconductor refrigerator 2. This embodiment still includes PLC controller and temperature sensor, and temperature sensor locates cold and hot working face 4, and slide rheostat and temperature sensor all are connected with the PLC controller electricity, adopt this number scheme, and temperature sensor transmits the PLC control with the temperature data of cold and hot working face 4, thereby PLC control is through the operating temperature of the resistance value control semiconductor cooler 2 of control slide rheostat, realizes intellectuality.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a heating electric stove, is including locating firing equipment, graphite cake and the power in the heating furnace, firing equipment is connected its characterized in that with the power electricity: the heating device comprises a semiconductor refrigerator and a heat conducting piece, the semiconductor refrigerator is arranged below the graphite plate, one surface of the semiconductor refrigerator is in heat conducting contact with the bottom surface of the graphite plate so that the top surface of the graphite plate forms a cold and hot working surface, the cold and hot working surface is provided with a fixing part for placing a test tube, the heat conducting piece is arranged below the semiconductor refrigerator, and the other surface of the semiconductor refrigerator is in heat conducting contact with the heat conducting piece.
2. A heated electric fire according to claim 1 characterised in that: the graphite plate is provided with a countersunk hole, the heat conducting piece is provided with a threaded hole matched with the countersunk hole, a heat insulation sleeve is arranged in the threaded hole, and the graphite plate is locked into the countersunk hole and the heat insulation sleeve through bolts to be fixed with the heat conducting piece.
3. A heated electric fire according to claim 1 characterised in that: the cold and hot working faces are of a concave structure.
4. A heated electric fire according to claim 1 characterised in that: the semiconductor refrigerator is electrically connected with the slide rheostat which is electrically connected with a power supply.
5. A heated electric fire according to claim 4 characterised in that: still include PLC controller and temperature sensor, cold and hot working face is located to temperature sensor, slide rheostat and temperature sensor all are connected with the PLC controller electricity.
6. A heated electric fire according to claim 1 characterised in that: the electric heating furnace is provided with heat dissipation holes, and the heat dissipation holes are connected with the heat conducting piece.
7. A heated electric fire according to claim 1 characterised in that: the fixing part is a round hole arranged on the cold and hot working surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121332705.5U CN215429138U (en) | 2021-06-16 | 2021-06-16 | Electric heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121332705.5U CN215429138U (en) | 2021-06-16 | 2021-06-16 | Electric heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215429138U true CN215429138U (en) | 2022-01-07 |
Family
ID=79711377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121332705.5U Active CN215429138U (en) | 2021-06-16 | 2021-06-16 | Electric heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215429138U (en) |
-
2021
- 2021-06-16 CN CN202121332705.5U patent/CN215429138U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |