How to Make a Semiconductor Refrigerator?

Dog days, I can't stand the heat; It won't take long to buy some fruit. If you want to drink some ice water, you can only think about it; As a DIY lover, I decided to build a refrigerator to play with; It is unrealistic to engage in compressor refrigeration in my spare time. I thought of electronic semiconductor refrigeration chips; I think it is very suitable for amateur, and the effect is good; The price is also reasonable. He bought a total of $4.3a and started it; After a week of hard work; Finally made, hehe, a native refrigerator came out

Power supply first; 12v25a switching power supply

For the half bridge structure, see my [diy12v power supply] log for details

Find a shell and install it well

Power on test run OK

OK, install the housing

Prepare the radiator, apply thermal conductive silicone grease and stick the refrigeration sheet on it

The cooling part of the cooling fin must be done well, otherwise the heat cannot be dissipated, and the cooling effect will be greatly reduced

I found a foam box, ha ha.

At the bottom of the foam box, make an aluminum plate. The cold side of the cooling piece is attached to the upper part of the absorption box.

Add a fan to the radiator for better heat dissipation

OK, connect the power supply and try the machine

The box is slowly getting cold

Bring some bottles of water to Bingbing, hehe

OK, close the cover

The refrigerator is designed with four gears. When it needs to be frozen, the four gears are fully opened and will freeze in more than ten minutes. When refrigerated, the second gear can be used; Hehe, is it OK

How to Make a Semiconductor Refrigerator? 1

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