Soy Milk Maker Product

Overview

A soy milk maker is a fully automated blender-juicer-cooker that transforms dried soybeans into finished, strained soy milk in a single cycle. The operator loads soybeans and water into a Borosilicate Jug, selects a program via the Mode Button, and presses Start Button. The Main Control Board then orchestrates a sequence: soaking, grinding the beans to a fine slurry, heating to inactivate enzymes, and filtering through a Filter Mesh to remove okara (bean pulp). Finally, the Dispensing Pump dispenses the finished milk into a cup. All water and slurry remain inside the jug; the operator never directly handles raw beans or hot liquid.

The jug is borosilicate glass with a soy-milk-maker-heating-jacket (double-wall stainless steel) surrounding it. A Heating Element inside the jacket heats the entire volume. The Grinding Blade Set sits in the jug lid and spins at up to 20,000 rpm, liquefying beans suspended in water. Once the liquid reaches 95 °C, the pump pushes milk downward through a Peristaltic Pump Head, squeezing it through the internal filter mesh into a collection sump. Okara (solids) accumulates above the mesh and is discarded; milk drains below.

How it works

The operator fills the Borosilicate Jug to the "beans" line with dried soybeans (≈50 g) and the "water" line with cold water. The Top Lid snaps on, and the Grinding Blade Set at its center aligns with the motor shaft. Pressing Start Button after selecting "soy milk" mode engages the Main Control Board.

Phase 1: Soak. The AC Induction Motor turns on at low speed (5,000 rpm) for 3 minutes, allowing beans to soften in water. The Grinding Blade Set cuts them roughly but does not liquefy them yet.

Phase 2: Grind. Motor speed ramps to 20,000 rpm for 8 minutes. The four-blade cutter rapidly shears the soaked beans into a fine slurry. Water and bean solids are well mixed. The Temperature Sensor (a thermistor) monitors temperature rise due to friction heating.

Phase 3: Heat. The Heating Element powers on, using the Relay under Main Control Board command. The jug heats from ambient to 95 °C over approximately 10 minutes. At 70 °C, the motor continues grinding slowly (8,000 rpm) to ensure even heating. The Thermostat Switch cuts the heater if temperature overshoots 100 °C.

Phase 4: Settle. Motor stops. The jug sits for 2 minutes at 90 °C, allowing residual fines to suspend and then fall slightly.

Phase 5: Filter & Dispense. The Pump DC Motor (24 V DC) energizes via the transformer secondary. The Peristaltic Pump Head begins squeezing the silicone tubing in sequence at 0.5 L/min. Finished milk (the liquid below the Filter Mesh) is pushed through the Outlet Spout into the user's cup. Okara remains atop the mesh, unspooled.

The LCD Display shows elapsed time (MM:SS format) and current phase. When the 30-minute cycle completes, the Main Control Board cuts all power and sounds a buzzer. The jug is warm (not scalding) and can be safely removed; the operator unscrews the jug lid and lifts out the Filter Basket Insert (now filled with spent okara) and discards it.

All power enters via the Power Cord, passes through a Fuse Holder (10 A ceramic fuse) and Thermal Fuse (secondary protection), and feeds a AC Transformer (230 V primary → 24 V + 12 V secondary). The 230 V primary also directly supplies Heating Element and AC Induction Motor via Relays on the control board. The 24 V secondary runs the Pump DC Motor and the MCU logic.