Indoor Refrigeration Unit

The D1.9E9 indoor refrigeration unit utilizes a high-output 400 mm external rotor fan to move a large 3900 m³/h air volume across low-temperature rooms. This setup achieves a powerful 10-meter horizontal air throw, forcing deep air penetration through dense product racking and eliminating localized warm zones. Engineered exclusively for flush ceiling suspension, the low-profile chassis stays completely clear of forklift paths and overhead storage structures, allowing commercial blast freezers and micro-fulfillment hubs to maximize floor real estate.

Calibrated to sustain a harsh -35°C room baseline at an intensive -42°C evaporating temperature, this unit delivers a precise 1.9 kW nominal cooling capacity. The inner core features a staggered copper pipe grid built with inner-grooved tubes to lower oil film thermal resistance and maximize heat absorption speed. Combined with window-cut, dual sine wave louvered fins featuring wavy borders, the structural configuration creates instant air turbulence to accelerate core product pull-down cycles.

To prevent immediate ice bridging during continuous sub-zero duty, the coil integrates an extra-wide 9mm fin pitch that maintains open air paths under heavy moisture loads. The rugged outer casing is manufactured from premium galvanized steel treated with an anti-corrosive powder finish to withstand aggressive sanitation washdowns. Powered by a 180W low-temperature motor featuring IP55 waterproof protection and Class F insulation, the assembly uses a 2.4 kW stainless steel defrost heater circuit with epoxy-sealed leads and is verified via a strict 2.8 MPa clean air pressure test.