In critical scenarios like data centers, medical operating rooms, and industrial production lines, uninterruptible power supplies (UPSs) are the "last line of defense" for emergency power supply. In the event of a sudden power outage, the UPS must instantly switch to power supply mode, ensuring zero downtime for core loads like servers, ventilators, and precision equipment. If the internal temperature of the UPS exceeds normal operating temperature, it will not only accelerate the aging of components like capacitors and power modules, but may also trigger overheating protection, directly causing a disruption in emergency power supply. The 4020 DC axial-flow fan is the "invisible guardian" that solves the problem of UPS temperature control and safeguards power continuity. With its efficient heat dissipation performance, the 4020 DC axial-flow fan continuously dissipates heat from the UPS, becoming an indispensable component for ensuring stable emergency power supply.

I. The "Temperature Lifeline" of UPSs: Why Temperature Control is a Prerequisite for Emergency Power Supply

The emergency power supply capability of a UPS fundamentally relies on the stable coordination of its internal components: the battery pack provides energy storage, the inverter converts DC to AC, and the control board switches between the grid and the battery. However, these core components generate continuous heat during operation: Joule heat generated during battery charging and dissipation, switching losses in the inverter power transistors, and operating heat from the control chip. If these heat sources are not dissipated promptly, the internal ambient temperature will soar. Therefore, a stable and efficient heat dissipation system is essential for ensuring a reliable emergency power supply.

II. DC Axial Fan 4020: A Temperature Control Tool for UPS

Efficient Heat Dissipation: Optimal Air Volume and Pressure

Equipped with a brushless DC motor, it offers a speed range of 5000-7500 RPM, an air volume of 5.70-8.60 CFM, and a maximum air pressure of 5.58 mmH₂O. This configuration not only quickly dissipates heat from the battery pack but also penetrates deep into the densely populated inverter module area to prevent localized overheating.

Quiet and Durable: Perfect for Special Scenarios

Medical operating rooms, laboratories, and other locations have strict noise requirements (typically ≤50 dB). The 4020 DC axial fan operates at a noise level of 25.5-5.58dB, comparable to everyday indoor ambient noise levels and designed to prevent interference with precision work. It also boasts a service life of up to 80,000 hours.

Strong Environmental Adaptability: Handles Extreme Operating Conditions

Some industrial-grade UPSs must operate in harsh environments ranging from -20°C to 60°C (e.g., outdoor base stations and low-temperature factories). Using PC + fiberglass composite materials and high-temperature-resistant bearings, it maintains stable operation across a wide temperature range, eliminating low-temperature stalling and high-temperature seizures, ensuring continuous and reliable operation of the UPS cooling system.

PWM Intelligent Temperature Control: Dynamically Adapts to Load

PWM intelligent temperature control technology monitors device temperature in real time and dynamically adjusts fan speed. Under low load, the fan operates at a low speed to maintain a stable device temperature; under high load, the fan speed increases for efficient heat dissipation. Compared to a fixed speed, this dynamic adjustment not only addresses insufficient heat dissipation at high loads, but also reduces energy consumption at low loads, achieving a balanced balance of heat dissipation and energy conservation. In a UPS emergency power supply system, the 4020 DC axial-flow fan, despite its compact size, serves as a critical link in the chain of heat dissipation, component stability, and continuous power supply. Its presence prevents UPS failures due to high temperatures, further strengthening the emergency power supply lifeline for data centers, medical settings, and industrial production lines.
Due to their wide adaptability in performance and operating voltage (e.g., 5V/12V), DC axial-flow cooling fans are suitable for a variety of electronic devices, such as power supplies, smart appliances, racks, cabinets, and various industrial equipment. When selecting a fan, we recommend choosing the appropriate model and specifications based on the device's cooling requirements, space constraints, and fan quietness requirements.