CN202694642U

CN202694642U - Demonstration device for thermal effect of current

Info

Publication number: CN202694642U
Application number: CN 201220205115
Authority: CN
Inventors: 赵馨蕾
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2013-01-23
Anticipated expiration: 2022-05-09

Abstract

The utility model relates to the structural improvement on a demonstration device for the thermal effect of current, and provides a demonstration device for the thermal effect of current, which has the advantages of simple structure, convenience in use, visibility in demonstration and short demonstration time. The demonstration device comprises a flask, wherein a rubber plug is arranged at the opening of the flask. The demonstration device is structurally characterized in that two wiring terminals and one air pipe are arranged on the rubber plug, one ends of the wiring terminals are connected with a resistance wire in the flask, the other ends of the wiring terminals are connected with a power supply, and the air pipe is connected with a U-shaped tube through a hose.

Description

The heating effect of current demonstration device

Technical field:

The utility model is divided by International Patent Classification (IPC) (IPC) and is belonged to physical department, instrument branch, education; Cryptology; Show; Advertisement; The large class of seal, education or demonstration equipment; The apparatus that is used for teaching or communicates by letter with blind person, deaf person or mute; Model; Planetarium; Terrestrial globe; Map; The figure watch group, the model that science, medical science or mathematics are used, the device with full-size(d) that for example is used for demonstration is organized greatly; The little technical group field of the demonstration device of electricity or magnetics; International Patent classificating number is: G09B23/18 relates to a kind of improvement of heating effect of current demonstration device structure in particular.

Background technology:

At present, the technology about the heating effect of current demonstration device existing and that once had has been made very fruitful effort to the utility model, also once designs many outstanding technical schemes.Such as being declared by Liu Ziqing of the Decree of Patent Office of China in 2011, Granted publication number is CN201993957U, China Patent No. (ZL) is: No. 201120014397.1 utility model, title are the utility model patents of " heating effect of current demonstration device ", the technical scheme that adopts.At the technical elements of heating effect of current demonstration device, be of great value innovation and creation.

But it is not directly perceived that it has demonstration, the technical matters that the demonstration time is long.

Summary of the invention:

The utility model is exactly for the problems referred to above, and a kind of simple in structure, easy to use, demonstrating visual, short heating effect of current demonstration device of demonstration time are provided.

For reaching above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, and the utility model comprises flask, and the opening part of flask is provided with rubber plug, is provided with two binding posts and a tracheae on its structural feature rubber plug; One end of described binding post links to each other with the resistance wire in the flask; The other end of described binding post links to each other with power supply; Described tracheae links to each other by the same U-shaped pipe of flexible pipe.

As a kind of preferred version of the present utility model, described power supply is contacted with switch.

The beneficial effects of the utility model:

1, simple in structure:

The opening part of flask of the present utility model is provided with rubber plug, is provided with two binding posts and a tracheae on the rubber plug; One end of described binding post links to each other with the resistance wire in the flask; The other end of described binding post links to each other with power supply; Described tracheae links to each other by the same U-shaped pipe of flexible pipe.Its member is few, and the utility model is simple in structure thus.

2, easy to use:

When the utility model used, then the coloured water of can packing in the U-shaped pipe be integrally connected U-shaped pipe and tracheae by flexible pipe, binding post is linked to each other with power supply, the resistance wire heating power makes the air expanded by heating in the flask again, the water that promotes in the U-shaped pipe moves, and method of operating is simple, and is easy to use.

3, demonstrating visual:

Use two cover the utility model, place respectively two kinds of different resistance wires of resistance in two flasks; Two kinds of resistance wires are switched on simultaneously, and the flask with the larger resistance wire of resistance can be warmmer, so it is quick that the water than in another flask that the liquid of its U-shaped pipe moves moves, demonstrating visual.

4, save time:

After resistance wire of the present utility model heated a little, liquid namely began mobile, just can see the demonstration effect at once; Saved a large amount of time.

5, power saving:

Power supply of the present utility model is contacted with switch, thereby in the time need not demonstrating, switch can be disconnected, thereby reaches the purpose of power saving.

Description of drawings:

Fig. 1 is structural representation of the present utility model.

1 is that flask, 2 is that resistance wire, 3 is that U-shaped pipe, 4 is that flexible pipe, 5 is that switch, 6 is that power supply, 7 is that binding post, 8 is that rubber plug, 9 is tracheae in the accompanying drawing.

Embodiment:

The utility model comprises flask 1, and the opening part of flask 1 is provided with rubber plug 8, is provided with two binding posts 7 and a tracheae 9 on its structural feature rubber plug 8; One end of described binding post 7 links to each other with the resistance wire 2 in the flask 1; The other end of described binding post 7 links to each other with power supply 6; Described tracheae 9 links to each other by flexible pipe 4 same U-shaped pipes 3.

As a kind of preferred version of the present utility model, described power supply 6 is with switch 5 series windings.

Above content is the further description of the utility model being done in conjunction with concrete preferred implementation; can not assert that implementation of the present utility model is confined to these explanations; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the definite protection domain of claims that the utility model is submitted to.

Claims

1. the heating effect of current demonstration device comprises flask (1), and the opening part of flask (1) is provided with rubber plug (8), it is characterized in that: be provided with two binding posts (7) and a tracheae (9) on the rubber plug (8); Resistance wire (2) in the same flask of one end (1) of described binding post (7) links to each other; The same power supply of the other end (6) of described binding post (7) links to each other; Described tracheae (9) links to each other by the same U-shaped pipe of flexible pipe (4) (3).

2. heating effect of current demonstration device according to claim 1 is characterized in that: the same switch of described power supply (6) (5) series winding.