Summer. The street is hot. The office in which I work is not equipped with air conditioning. Not to say that the heat is so exhausting, but still I want to feel the breath of a cool breeze. The floor fan creates it, but at the same time, it has one very significant drawback - it blows paper from the table.)))). It would seem a trifle, but having sorted out a bunch of documents several times, I turned it off ...
It occurred to me to get a small desktop fan, which could be directed exclusively at myself.
And, like any master, of course, he began to think through its creation do it yourself!)))..
..I was originally thinking of creating a small fanless fan ... But creating it requires a certain amount of time and effort (especially time), and a spoon, as you know, is expensive for lunch.)))
..One evening, sitting in a workshop in his basement, he turned on his "air conditioner" there, which was once made from a canister. (his description is on this site) ... It occurred to me that using the available (available now) fittings for sewer pipes, I can fully assemble the reduced and greatly simplified model the same cooler ...
I made it that very evening. And here that I needed for this:
1. Coupling for 110 mm sewer pipes
2. Transition 110 to 50.
3. Branch 50 to 67
4. End cap 110
5. Fan from the computer power supply.
6. The switch.
7. ShVVP cord 2 on 50.
8. A temporary flower pot (in which plants are sold for planting).
My idea was to make a reservoir for water / ice, which would be covered on top with a conical duct with a built-in fan. As a working fan, I decided to use this fan from the computer’s power supply:
I have many similar lying around, but the choice fell on him because, having a size of 90 by 90 mm, it turned out to be the largest of all that fit inside the sewer pipe.
That is, in its original form, it did not fit there. But I took the grinder and, ako the sculptor, cut off everything superfluous)))))):
After making sure it fits, I began to collect the “air supply” of my device. The transition from a diameter of 110 to a diameter of 50 will act as its body:
For convenience, I decided to equip the device with a switch. In stocks I found this one:
Working as a step drill, I drilled a hole under it in the body:
On the other hand, I drilled a hole for the cord:
Then I connected the fan wires to the cord through the switch.
Put everything in its place.
After that, I filled the entire space between the case and the fan with hot glue. (Unfortunately, I forgot to photograph this process). Thus, he fixed the fan and wires, and, at the same time, excluded the passage of air past the fan.
Now I got into the ice tank. I made it from a coupling for 110 mm sewer pipes:
On the one hand, I closed it with a plug:
The result is a tank in which you can pour water, or pour ice, and on top of the "fan part". (I thought to seal the joint between the plug and the sleeve with hot glue, but this is not required - the connection, due to the rubber sealing sleeve, is very tight). For air intake, I drilled several holes in the lower and upper parts.
To direct the air flow, I inserted a tap on top:
As you may have already guessed, I want to make an air supply according to this scheme:
That is, the air entering inside must pass along the surface of the water (ice) and, already cooled, go outside. In order to change the direction of air movement downward, and not to let it immediately be pulled into the fan, you need to make a guide cone. I decided to make it from a disposable flower pot:
I have a lot of such pots. They sell live plants intended for planting. My wife buys a lot of different flowers, so many such pots.
After choosing the right one, I cut off the bottom and the border at the top:
And put in place:
That, in fact, is all. It remains to pour ice:
Collect and enable:
I completely forgot. I powered it directly from the system unit. In the "right trash" I found just such a thing:
(By the way, I don’t know what it is? More precisely, I don’t know why?).
I cut off the “mother” plug from it, soldered it to the end of the cord, and plugged it directly into the free “tail” inside the system unit)))
As for the resulting device, the fan is very weak. He can still blow directly. And if like this, it sucks in air, changing its direction to the opposite - only a light breeze comes out of the nozzle ... More precisely, I would say, light air movement. I even crept into doubt that everything shown on the Internet homemade fanless computer-based fans is fake! Because they have smaller fans and performance, it turns out, too. So what remains there ??? ... (Okay, let's check with practice))) .... Very sensitive to the size and position of the "suction cone" - the part that I made from a flower pot. Slightly moved - and no longer blows. Regulated for a long time. In general, it has the right to life. Comfortable enough. That's just the look ....