SHANDONG DELIN

Ultra-quiet fan


Ultra-quiet fan
Ultra-quiet fan
Ultra-quiet fan
Ultra-quiet fan
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  • Ultra-quiet fan
  • Ultra-quiet fan
  • Ultra-quiet fan
  • Ultra-quiet fan

Product Details

Product Overview:
Our company’s ultra-quiet, bidirectional ventilation unit is an advanced low-noise ventilation system that builds on the conventional bidirectional design, incorporating multiple noise-reduction technologies. Its key advantage lies in delivering highly efficient two-way air exchange while maintaining operating noise at exceptionally low levels, making it ideally suited for environments where noise sensitivity is a priority.
It simultaneously performs bidirectional air exchange—introducing filtered fresh outdoor air while exhausting stale indoor air—effectively addressing ventilation, formaldehyde removal, and odor control in enclosed spaces. Heat‑recovery models further recover cooling or heating energy, reducing air‑conditioning energy consumption. Unlike conventional ventilators, this unit employs optimized airflow paths, sound‑absorbing and vibration‑damping technologies, and a low‑noise motor to keep noise levels at 22–30 dB(A) on the lowest setting, making it virtually silent during operation and ensuring no disruption to rest, work, or study—balancing superior ventilation with an exceptionally quiet experience.

Product specification and model reference (taking mainstream silent models for home and commercial use as examples):
The core specifications of quiet‑operation models are categorized primarily by airflow volume and noise level; the following are the typical reference standards:

Airflow specifications ( m³/h)

Typical application scenarios

Key Mute Parameter Reference

Other basic parameters

Airflow specifications ( m³/h)

60-150

Bedroom, study, studio apartment

Low-gear noise ≤22–26 dB(A), high-end models ≤35 dB(A)

Power 11–80 W,接管 diameter φ100–125 mm

60-150

150-250

Two-bedroom, small-sized apartment

Low-gear noise ≤26–28 dB(A), high-end models ≤38 dB(A)

Power 40–120 W,接管 diameter φ125–150 mm

150-250

250-350

Large residential units, small office spaces

Low-gear noise ≤28–30 dB(A), high-end models ≤40 dB(A)

Power 80–180 W,接管 diameter φ150–160 mm

250-350

Note: Different brands and models use varying naming conventions, typically indicating airflow rate and noise‑reduction features in the model designation, such as “Quiet‑Type ERV‑250” or “Low‑Noise Bidirectional Flow XF‑350.” Laboratory noise measurements are based on tests conducted in a ductless environment; in actual installation, noise levels may vary slightly due to ductwork and mounting methods.
Scope of Product Use:
The core application scenarios for the ultra-quiet bidirectional ventilation unit are environments that are sensitive to noise and require 24-hour ventilation, primarily including:
1. Home Scene:
Bedrooms, children’s rooms, studies, and senior‑friendly spaces—especially those that require continuous ventilation during the night—can enjoy quiet operation without disturbing rest. It’s also ideal for households that need rapid formaldehyde removal after renovation but cannot open windows for ventilation.
2. Office and Study Scenarios:
Office spaces, study rooms, libraries, and meeting rooms can improve indoor air quality in enclosed environments—without disrupting work or study—and help alleviate symptoms of oxygen deficiency and dizziness.
3. Commercial Service Scenarios:
Hotel rooms, guesthouses, postpartum care centers, beauty salons, and hospital wards—these settings demand a high level of ambient quietness while also requiring continuous ventilation to remove odors and excess moisture.
4. Special Use Cases:
Laboratories, archives, and precision‑instrument rooms require stable ventilation to maintain optimal environmental conditions, while also demanding low noise levels to avoid interfering with equipment operation or personnel work. Certain custom‑designed low‑noise models are also suitable for underground spaces, small server rooms, and similar settings.


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