Energy conversion demonstration teaching aid

Abstract

The utility model discloses an energy conversion demonstration teaching aid which comprises a sprinkling can, a fan and a thermometer. The sprinkling can comprises a can body, a can nozzle and a pressure pump; the fan is arranged at the spout through a metal support, and fan blades of the fan and the spout are located at the same height. The thermometer is arranged outside the kettle body; the pressure pump penetrates through the kettle cover assembly, extends into the inner cavity of the kettle body and is configured to pressurize the inner cavity; and a heat insulation layer is coated outside the kettle body. According to the utility model, the change of internal energy is reflected through the reading of the thermometer and the rotation of the fan, the change of an experiment is directly presented, the operation is easy, the success is easy, the raw materials adopted by the whole structure are simple and easy to obtain, and the defects that the experiment demonstration teaching aid in the prior art is complex in structure and not visual are overcome.

Description

TECHNICAL FIELD

[0001] The utility model belongs to experimental teaching aid technical field, concretely relates to a kind of energy conversion demonstration teaching aid. BACKGROUND

[0002] In junior high school physics experiment, generally, students are shown the conversion between various forms of energy by demonstration teaching aid, for example, the conversion between internal energy and kinetic energy, to help students understand the important knowledge point of energy conversion more intuitively, to deepen the understanding and memory of relevant physical concepts. However, most of the experimental demonstration teaching aid structure is complex, and the display effect lacks intuitiveness, so it is not easy for students to quickly master relevant knowledge.

[0003] Therefore, a simple structure and intuitive result teaching aid is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at the deficiency of prior art, provides a kind of energy conversion demonstration teaching aid, can demonstrate that the internal energy of object is reduced when object does work to outside, and can demonstrate that the internal energy of object is increased when outside does work to object.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of energy conversion demonstration teaching aid, comprising: watering can, fan and thermometer;The watering can includes kettle body, spout and pressure pump;The fan is arranged at the spout;The thermometer includes probe and display screen, wherein the probe is placed in the kettle body, and the display screen is arranged outside the kettle body.

[0007] Further, the watering can further includes kettle cover assembly, the spout is arranged at one end of the kettle cover assembly, and the other end of the kettle cover assembly is provided with handle.

[0008] Further, the handle is provided with button.

[0009] Further, the pressure pump penetrates the kettle cover assembly and extends into the inner cavity of the kettle body, and is configured to pressurize the inner cavity.

[0010] Further, the fan is arranged at the spout by metal support, and the fan blade and the spout are at the same height.

[0011] Further, the kettle body is coated with heat insulation layer.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a reaction of the change of internal energy through the indication of electronic thermometer and the rotation of fan, can make the change of experiment directly present, set up the heat insulating layer and reduce the influence of outside environment to experiment, make experiment more rigorous, easy operation, easy success simultaneously, and the raw material of whole structure is simple and easily obtained. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view of the utility model.

[0015] Mark in drawing:1, watering can;1-1, kettle body;1-2, kettle mouth;1-3, pressurizing pump;1-4, handle;1-5, button;2, fan;3, thermometer;4, heat insulating layer. DETAILED DESCRIPTION

[0016] In order to make the utility model's purpose, technical scheme and advantage more clearly clear, the following is with the drawings and example, and this utility model is further detailed explanation.Should understand, the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0017] In the utility model, unless another explicit provision and limitation, the term "arrangement", "connection", "fixation" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements inside.For the ordinary skill in the art, the above-mentioned term in the utility model can be understood according to the specific meaning in the utility model.

[0018] In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0019] Please refer to Figure 1The utility model provides a kind of energy conversion demonstration teaching aid, comprising: watering can 1, fan 2 and thermometer 3;The watering can 1 includes kettle body 1-1, kettle cover assembly and pressure pump 1-3;The fan 2 is arranged at the spout 1-2;The thermometer 3 includes probe and display screen, wherein probe is arranged inside kettle body 1-1, for monitoring temperature change inside kettle body 1-1, display screen is arranged outside kettle body 1-1, for intuitive display temperature change inside kettle body 1-1;One end of the kettle cover assembly is provided with spout 1-2, the other end of the kettle cover assembly is provided with handle 1-4, button 1-5 is provided on handle 1-4;The pressure pump 1-3 is through the kettle cover assembly and extends into the inner cavity of the kettle body 1-1, is configured to pressurize the inner cavity;Kettle body 1-1 is covered with heat insulation layer 4, can reduce the influence of external environment on experiment.

[0020] The connection mode of the watering can 1, the fan 2 and the thermometer 3 in the utility model is a conventional means, for example, through a connecting piece such as a metal support, and those skilled in the art should be able to understand and implement it.

[0021] The utility model in using, including the following steps:

[0022] S1) pressing: press the pressure pump 1-3 of watering can 1, the gas in the kettle does work, and the temperature will rise, when the thermometer 3 shows number also rises accordingly;

[0023] S2) release: when button 1-5 on handle 1-4 is pressed to release gas, the gas in the kettle does work, and the temperature decreases, and at the same time, the kinetic energy of fan 2 is converted, so that fan 2 rotates. By observing the rotation of fan 2 and the change of the number shown by thermometer 3, students can intuitively feel the conversion process between internal energy and kinetic energy, and also can calculate the specific value of the work done by the outside on the gas according to the formula through the temperature change.

[0024] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

Claims

1. An energy conversion demonstration kit comprising: The spray bottle (1), the fan (2) and the thermometer (3); characterized in that the spray bottle (1) comprises a bottle body (1-1), a bottle mouth (1-2) and a pressure pump (1-3); the fan (2) is arranged at the bottle mouth (1-2); the thermometer (3) comprises a probe and a display screen, wherein the probe is placed inside the bottle body (1-1), and the display screen is arranged outside the bottle body (1-1).

2. The energy conversion demonstration kit of claim 1, wherein, The spray bottle (1) further comprises a bottle cap assembly, the bottle mouth (1-2) is arranged at one end of the bottle cap assembly, and a handle (1-4) is arranged at the other end of the bottle cap assembly.

3. The energy conversion demonstration kit of claim 2, wherein, A button (1-5) is arranged on the handle (1-4).

4. The energy conversion demonstration kit of claim 2, wherein, The pressure pump (1-3) penetrates through the bottle cap assembly and extends into an inner cavity of the bottle body (1-1), and is configured to pressurize the inner cavity.

5. The energy conversion demonstration kit of claim 1, wherein, The fan (2) is arranged at the bottle mouth (1-2) through a support, and the fan blade of the fan (2) is at the same height as the bottle mouth (1-2).

6. The energy conversion demonstration kit of claim 1, wherein, The bottle body (1-1) is coated with a heat insulation layer (4) outside.

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