If you have a potbelly stove or other similar stove, this homemade just for you. Here we will look at how to make a simple fan working on. This small device is capable of converting thermal energy into electricity, from which our fan will work when the stove is sufficiently heated. The benefit of homemade is that the fan will allow you to effectively remove heat from the stove and the room will quickly warm up air, and for the operation of the device does not require additional energy sources.
Going homemade is quite simple and does not require large expenses. As the main body, an old cylinder from a chainsaw or similar equipment is used. You will also need a radiator from the computer, a fan and a motor from the drive. To make an adapter for mounting the engine auto used a lathe, but all this can be done in simpler ways. So let's get started.
Materials and tools used by the author:
Material List:
- air propeller;
- a drive motor or similar;
- ;
- wires;
- copper plate;
- a radiator from the computer;
- a piece of pipe in the form of a corner with a nut;
- screws, etc.
Tool List:
- lathe;
- drilling machine;
- screwdriver, keys;
- soldering iron;
- vernier caliper ();
- tap;
- WD-40.
Fan manufacturing process:
Step one. We prepare all the necessary details.
The author experimented with various materials for making a fan. The best pair for heat transfer was an old computer radiator, as well as a copper plate. When the radiator is heated, heat is transferred to the Peltier element, and so that it begins to generate current, on the other hand, the part should be as cold as possible. On the other side of the element is a copper plate, in theory, it should be cooled through a cylinder, which is blown by a fan, but the thermal contact here is not enough.
As for the engine, it will come from an old drive or the like. In general, modern Peltier elements can produce voltages up to 12V, but it all depends on how to use them. With a small temperature difference, the voltage and current will be lower. The element of the author is designed for a temperature of 150 ° C.
You will also need a piece of pipe in the form of a corner with a nut for installing the engine.
Step Two We prepare the bracket for installing the engine
To install the engine you will need a copper nut.As planned, the author simply wanted to install the engine inside the nut, he measured the motor and squandered the seat. But in the end it turned out that the motor shaft is too short and the screw catches on the cylinder. To solve this problem, it was decided to carve an adapter, thanks to which the engine was moved forward.
Well, then everything is simple, we fasten the nut to the pipe and the motor is installed. The pipe is screwed into the cylinder, under it you need to drill a hole.
Step Three We collect homemade
You can start assembling the structure. The Peltier element should be sandwiched between the radiator and the copper plate. Attach the cylinder to the radiator and mark the space for the holes. Drill holes in the radiator, and then thread the screws. Now you can easily mount the cylinder on the radiator. You can try to clamp the element between the hot and cold plate, the motor should work if you connect it to the contacts.
Clean the radiator plane so that the Peltier element fits snugly. Well, then on top of the element we install the plate and fasten the cylinder. Do not forget to connect the necessary wires. Tighten the screws so that the Peltier element snuggles firmly, but do not overdo it! Also, do not confuse during installation the cold and hot side of the element, and also do not forget to decide which direction the screw should rotate.
That's all, the homemade product is ready, you can install the screw and proceed to the tests! Install the radiator on a hot surface, after a while it should start working! Thanks to the use of a radiator, it will be difficult for the device to overheat, since the heat transfer from the furnace here is not very efficient. Do not forget that the Peltier element is not designed for temperatures above 150 ° C and may fail if overheated.
You can also put an LED on the fan, as a result, it will also work as a night lamp. In general, there is no limit to perfection. That's all, good luck and take care!