Cooling Power 90W Bottom Load Water Dispenser

The hot water circuit is built around a 304 food‑grade stainless steel tank with a seamless interior that resists scale buildup and does not leach substances into stored water. A 550 W heating coil brings the water to 85–95 °C at a rate of 5 liters per hour. Two independent safety devices protect the heating element: a mechanical float switch cuts power if the water level drops below the safe minimum, while an electronic thermostat disconnects the circuit if the tank temperature exceeds the preset upper limit. This dual‑layer approach prevents dry‑burning damage and extends the operational life of the heating components.

The cold water system operates on a separate 90 W compressor circuit with its own thermostat. The hot and cold loops are isolated, so dispensing a large volume of chilled water does not reduce the available hot water, and vice versa. A third faucet supplies warm water from an unheated reservoir at near room temperature.

90W Compressor Cooling Circuit

The cooling system uses a 90 W hermetic compressor paired with a fin‑and‑tube condenser. Cold water is maintained at 5–10 °C and the compressor cycles on and off based on a thermostat reading inside the cold water reservoir. Unlike thermoelectric cooling modules—which rely on ambient air temperature and a small fan—this compressor‑based approach continues to deliver chilled water in warm indoor environments without degradation in cooling speed. The compressor is a sealed unit that does not require refrigerant maintenance under normal operating conditions. Its rated power draw of 90 W is comparable to a small bar‑refrigerator.

Concealed Bottle Compartment & Operation

The water bottle is housed in a lower cabinet behind a removable front panel. An internal diaphragm pump transfers water from the bottle to the upper reservoirs; the pump activates only during refill cycles, running for a few seconds each time. Because the bottle remains at floor level, replacement involves sliding the empty bottle out and a full bottle in—no overhead lifting is needed. The cabinet accepts standard 3‑gallon and 5‑gallon round bottles with a 55 mm crown cap.

Dispensing is controlled by three push‑type faucets. The hot water faucet incorporates a mechanical child safety lock that requires a simultaneous press of the lock tab and the faucet button. A detachable drip tray beneath the faucets collects residual drips and slides forward for emptying. The unit also includes overheat and overcurrent protection on the electrical circuits, providing additional safeguards for continuous unattended operation in office or household settings.