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Hot-Air Popcorn Popper
Lawrence J. Tienor · Public domain (expired patent)
TheChef

Dibuat oleh

TheChef

22. September 2026DK
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Hot-Air Popcorn Popper

Cretors' machine, already published, pops corn in hot oil in a heated kettle - the oil carries heat to the kernels and stays in the popcorn afterwards. The rung above it carries the heat in air instead: a blast up through a perforated floor tumbles the kernels, and the popped ones, being light and large, are blown straight out of the chamber before they can scorch. **US 4,152,974**, "Hot air corn popper", Lawrence J. Tienor, assigned to National Presto Industries, filed 16. June 1978, granted 8. May 1979: a popping vessel closed at the bottom by "a perforated grill, the perforations of the grill being smaller than the size of unpopped corn kernels", with hot air driven up through it. **You build that chamber** from a steel can and mesh, blow it with a heat gun on a stand, and compare its yield with a pan of oil.
Menengah
2 hours

Instruksi

1

Cut the chamber

Remove both ends of a 100 mm steel food can and deburr. Cut a disc of stainless mesh to fit inside and fix it 20 mm from one end: kernels must sit on it, air must pass, and no kernel must fall through.

Material untuk langkah ini:

KalengKaleng1 buah
Jaring baja tahan karat mutu panganJaring baja tahan karat mutu pangan1 buah

Alat yang dibutuhkan:

Gunting sengGunting seng
Kikir LogamKikir Logam
Kacamata Pengaman BeningKacamata Pengaman Bening
2

Stand it over the gun

Clamp the heat gun upright, nozzle up, on a non-flammable surface, and set the can above it so all the air goes through the mesh. Angle the top of the can over a bowl. Never hold either in your hands while it runs.

Alat yang dibutuhkan:

Pistol udara panasPistol udara panas
Sarung tangan lasSarung tangan las
Mangkuk aduk besar (kaca)Mangkuk aduk besar (kaca)
3

Find the air temperature

Run the gun on its lower setting and read the air at the mesh with the infrared thermometer aimed at a scrap of steel resting there. Aim for about 200 °C: hotter scorches, cooler will not pop.

Alat yang dibutuhkan:

Termometer InframerahTermometer Inframerah
4

Pop by air

Weigh 50 g of kernels into the chamber and run until popping slows to one every few seconds. Catch the popcorn in the bowl. Weigh what did not pop and measure the popcorn's volume in a jug.

Material untuk langkah ini:

Biji jagung berondongBiji jagung berondong50 g

Alat yang dibutuhkan:

Timbangan Dapur DigitalTimbangan Dapur Digital
Gelas ukurGelas ukur
StopwatchStopwatch
5

Pop in oil

For comparison, pop another 50 g in a covered saucepan with 15 ml of oil over a medium hob. Weigh the unpopped kernels and measure the volume the same way.

Material untuk langkah ini:

Minyak gorengMinyak goreng15 ml
Biji jagung berondongBiji jagung berondong50 g

Alat yang dibutuhkan:

Panci berdinding tinggiPanci berdinding tinggi
Timbangan Dapur DigitalTimbangan Dapur Digital
6

Pressure and yield

Memuat notebook Jupyter…
7

History & Context

**What the patent specifies:** an upward hot-air flow through a perforated grill whose holes are smaller than a kernel, popping the corn and carrying the popped kernels out to a receptacle. **Modern build (derived):** a steel can, stainless mesh and a heat gun on a stand. Hot-air poppers sold in millions in the 1970s and 80s as the oil-free way to make popcorn. Their limits: no oil means seasoning will not stick; the airstream throws unpopped kernels out too if it is too strong; and the corn must be fresh enough to hold its water.
Langkah 7 - Image 1

Bahan

4

Alat yang Diperlukan

11

Blueprint terkait

Blueprint ini berbagi pengetahuan — teknik, bahan, atau prinsip

Popcorn Machine

Popcorn Machine

oleh TheChefDK

Camilan

33
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CC0 Domain Publik

Cetak biru ini dirilis di bawah CC0. Anda bebas untuk menyalin, memodifikasi, mendistribusikan, dan menggunakan karya ini untuk tujuan apa pun, termasuk komersial, tanpa meminta izin.

Dukung Maker dengan membeli produk melalui Cetak Biru mereka di mana mereka mendapatkan Komisi Pembuat yang ditetapkan oleh Penjual, atau buat iterasi baru dari Cetak Biru ini dan masukkan sebagai koneksi di milik Anda sendiri.

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