CN211427659U

CN211427659U - Physics teaching demonstrates appearance with thermoelectric magnet

Info

Publication number: CN211427659U
Application number: CN201820413185.2U
Authority: CN
Inventors: 张计才; 崔起帆; 张瑞港
Original assignee: Henan Normal University
Current assignee: Henan Normal University
Priority date: 2018-03-26
Filing date: 2018-03-26
Publication date: 2020-09-04
Anticipated expiration: 2028-03-26

Abstract

The utility model discloses a thermoelectric magnet demonstration appearance for physical teaching, including strutting arrangement and presentation device, strutting arrangement includes the bottom plate, the symmetry sets up in the riser of bottom plate surface and sets up in the backup pad of the riser side surface of bottom plate one side, presentation device includes copper mechanism, the current conducting plate, the iron core and set up in the backup pad by supreme hot-water tank that sets gradually down, the conducting strip, semiconductor wafer and cold water tank, be provided with the heater in the hot-water tank, the conducting strip lower extreme sets up in the hot-water tank, its upper portion passes the notch in hot-water tank and is connected with the semiconductor wafer, the lower surface at the cold water tank is detained to semiconductor wafer upper surface, the current conducting plate bottom is connected with the semiconductor wafer, copper mechanism one end is connected with the current conducting plate side surface, the other end is connected with the riser, Novel structure and obvious phenomenon.

Description

Physics teaching demonstrates appearance with thermoelectric magnet

Technical Field

The utility model relates to a physics teaching aid technical field, concretely relates to difference in temperature electro-magnet demonstration appearance for physical teaching.

Background

At college physics difference in temperature electro-magnet part, two heat source contact metals of different temperatures are used in ordinary teaching, according to the thomson effect, when the temperature is inhomogeneous, the free electron of the inside high temperature end of metal can be to low temperature department diffusion, accumulates at the temperature low side to produce a potential difference in the conductor, can generate current under the effect of potential difference, thereby make the iron core become an electro-magnet and then demonstrate the difference in temperature magnetic effect. The existing equipment has the problems of inconvenient use, great environmental influence, unobvious effect and the like, the alcohol lamp used as a heat source also has the safety problem, and the water vapor generated by the alcohol lamp can also cool the metal.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a difference in temperature electro-magnet demonstration appearance for physical teaching that simple structure, convenient to use, the phenomenon is obvious and can help the student to study better and understand.

In order to achieve the above object, the technical solution of the present invention is: the utility model provides a thermoelectric magnet demonstration appearance for physical teaching, includes strutting arrangement and presentation device, its characterized in that: strutting arrangement includes the bottom plate, the symmetry sets up in the riser on bottom plate surface and sets up in the backup pad of the riser side surface of bottom plate one side, presentation device includes copper mechanism, the current conducting plate, the iron core and set up the hot-water tank that sets gradually by supreme down in the backup pad, the conducting strip, semiconductor wafer and cold water tank, be provided with the heater in the hot-water tank, the conducting strip lower extreme sets up in the hot-water tank, its upper portion passes the notch in hot-water tank and is connected with the semiconductor wafer, the lower surface at the cold water tank is detained to the semiconductor wafer upper surface, the current conducting plate bottom is connected with the semiconductor wafer, copper mechanism one end is connected with the current conducting plate side.

Further, the copper mechanism is including connecting copper and hollow copper billet, and the connection copper sets up respectively in the both ends of hollow copper billet and inside the hollow copper billet, sets up the connection copper at the both ends of hollow copper billet wherein one is connected with the current conducting plate side surface, and another is connected with the riser side surface, and the iron core cross section is the iron core of "concave" font, and its core mouth is detained and is established on the inside connecting plate of hollow copper billet.

Further, a heater arranged in the hot water tank is a heating resistor.

Furthermore, a thermometer is arranged in the hot water tank.

The utility model discloses convenient to use, novel structure and phenomenon are obvious, use the water heating of heating resistor in to the hot-water tank, maintain the temperature difference between two heat sources, can produce better deduction effect, and the weight of absorbing the weight under the different temperatures can be recorded in the setting of thermometer.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of the copper plate mechanism;

fig. 3 is a top view of the copper plate mechanism;

fig. 4 is a schematic view of the structure of the iron core.

Description of the drawings: 1. the device comprises a bottom plate, 2, a vertical plate, 3, a hollow copper block, 4, a cold water tank, 5, a hot water tank, 6, a support plate, 7, a copper plate mechanism, 8, an iron core, 9, a heater, 10, weights, 11, a connecting copper plate, 12, a thermometer, 13, a conductive plate, 14 and a core opening.

Detailed Description

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The technical scheme of the utility model is described in detail by combining the attached drawings, the temperature difference electromagnet demonstration instrument for physics teaching comprises a supporting device and a demonstration device, wherein the supporting device comprises a bottom plate 1, vertical plates 2 symmetrically arranged on the surface of the bottom plate and a supporting plate 6 arranged on the side surface of the vertical plate on one side of the bottom plate, the demonstration device comprises a copper plate mechanism 7, a conductive plate 13, an iron core 8, a hot water tank 5, a heat conducting fin, a semiconductor wafer and a cold water tank 4 which are sequentially arranged on the supporting plate from bottom to top, a heater 9 is arranged in the hot water tank, the lower end of the heat conducting fin is arranged in the hot water tank, the notch of the heat conducting fin, which penetrates through the hot water tank, is connected with the semiconductor wafer, the upper surface of the semiconductor wafer is buckled on the lower surface of the cold water tank, the iron core sets up on copper mechanism.

The utility model discloses a concrete application process does: at first prepare the weight 10 that the iron core can inhale, then add the cold water of same temperature respectively in cold water tank and hot water tank, the weight is not attracted by the iron core this moment, because cold water tank does not have the difference in temperature this moment, so do not produce thermoelectric force and electric current, the iron core does not show magnetism this moment, water in the heater heating hot water tank, make the temperature rise, it forms the electric current to produce thermoelectric force this moment, make the iron core have magnetism, thereby can inhale the weight gradually, continue to heat, then can inhale the weight of bigger quality, thereby convenient demonstration has been by the difference in temperature and the magnetism phenomenon that produces, make abstract experimental principle become can obvious observation come out, the interest of student to this experiment has been promoted.

The heater that sets up in the hot-water tank is heating resistor, use heating resistor heating to improve the temperature, can be more accurate control the temperature difference between two heat sources, the error of experiment has been reduced, the success rate of experiment has been increased, be provided with thermometer 12 in the hot-water tank, can take notes the weight of inhaling under the different temperatures, let the student can have deeper understanding to this experiment, copper mechanism is including connecting copper 11 and hollow copper billet 3, it sets up respectively inside the both ends of hollow copper billet and hollow copper billet to connect the copper, set up and be connected with the current conducting plate side surface in one of them of connection copper at the both ends of hollow copper billet, another is connected with the riser side surface, the iron core of iron core cross section for falling "concave" font, its core mouth 14 is detained and is established on the inside connecting plate of hollow copper billet, installation iron core that can be convenient and make iron.

The foregoing shows and describes the general principles of the present invention, with its principal features and advantages, and further, various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a thermoelectric magnet demonstration appearance for physical teaching, includes strutting arrangement and presentation device, its characterized in that: strutting arrangement includes the bottom plate, the symmetry sets up in the riser on bottom plate surface and sets up in the backup pad of the riser side surface of bottom plate one side, presentation device includes copper mechanism, the current conducting plate, the iron core and set up the hot-water tank that sets gradually by supreme down in the backup pad, the conducting strip, semiconductor wafer and cold water tank, be provided with the heater in the hot-water tank, the conducting strip lower extreme sets up in the hot-water tank, its upper portion passes the notch in hot-water tank and is connected with the semiconductor wafer, the lower surface at the cold water tank is detained to the semiconductor wafer upper surface, the current conducting plate bottom is connected with the semiconductor wafer, copper mechanism one end is connected with the current conducting plate side.

2. The demonstration instrument of the temperature difference electromagnet for physics teaching according to claim 1, characterized in that: the copper mechanism is including connecting copper and hollow copper billet, and the connection copper sets up respectively in the both ends of hollow copper billet and inside the hollow copper billet, sets up the connection copper at the both ends of hollow copper billet wherein one is connected with the current conducting plate side surface, and another is connected with the riser side surface, and the iron core cross section is the iron core of "concave" font, and its core mouth is detained and is established on the connecting plate of hollow copper billet inside.

3. The demonstration instrument of the temperature difference electromagnet for physics teaching according to claim 1, characterized in that: the heater arranged in the hot water tank is a heating resistor.

4. The demonstration instrument of the temperature difference electromagnet for physics teaching according to claim 1, characterized in that: a thermometer is arranged in the hot water tank.