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Step into a meticulously climate-controlled environment with our advanced 12V/24V DC Series Air Curtain, specifically engineered for the demanding conditions of mobile transit. When you touch the cool, brushed stainless steel exterior, you immediately sense the industrial-grade craftsmanship designed to withstand the rigorous vibrations and moisture inherent in daily transit operations. Upon activation, the unit hums with a remarkably low acoustic profile—a subtle, consistent whisper that never intrudes upon the passenger experience or driver concentration. It produces a robust, invisible shield of high-velocity air that cascades smoothly from the ceiling to the floor, instantly severing the connection between harsh outdoor elements and the conditioned interior cabin. This invisible barrier effectively repels suffocating summer heat, biting winter chill, and the pungent odors of highway exhaust fumes, ensuring the internal atmosphere remains pristine and fresh. By dramatically reducing the escape of mechanically cooled or heated air when doors open, this system lessens the burden on primary vehicular HVAC units. This translates into measurable reductions in energy consumption and operational wear, making it the definitive climate retention tool for modern transit buses, delivery trucks, and recreational vehicles.
Elevate your fleet's operational efficiency with a climate control barrier that blends cutting-edge aerodynamics with rugged durability. This air curtain is meticulously engineered to address the specific pain points of mobile environments, ensuring your vehicles remain comfortable, clean, and energy-efficient regardless of external weather conditions.
Unyielding Environmental Shield: Generates a powerful, continuous down-draft that acts as an impenetrable barrier against airborne dust, intrusive insects, and noxious highway exhaust fumes.
Acoustic Excellence: The dynamically balanced fan wheel operates with precision, delivering massive air displacement while keeping noise levels strictly contained between 55 and 57 decibels, preserving a serene cabin atmosphere.
Thermal Retention Mastery: By dividing the interior and exterior into two distinct temperature zones, it drastically prevents the loss of conditioned air, optimizing the vehicle's overall energy expenditure and reducing HVAC strain.
Intelligent Automation: Seamlessly integrates with magnetic door switch technology, allowing the unit to power on instantly when doors open and shut down upon closure, eliminating manual operation and conserving power.
Space-Optimized Architecture: The ultra-slim profile ensures that installation requires minimal overhead clearance, preserving valuable cabin space for passengers and cargo without compromising on output power.
| Model | BPM | Power（w） | Air velocity (m/s) | Noise (dB) | Air volume (m³/h) | Net weight (kg | Unit size (㎜) |
| DC2408M1 | 2300 | 50 | 8.5 | 57 | 710 | 4.6 | 800x138x100 |
| DC2410M1 | 2280 | 53 | 8.5 | 57 | 850 | 5.5 | 1000x138x100 |
| DC2411M1 | 2200 | 55 | 8 | 56 | 820 | 6 | 1100x138x100 |
| DC2412M1 | 2150 | 58 | 8 | 55 | 900 | 6.5 | 1200x138x100 |
Understanding the intricate demands of vehicular integration, this series is built across seven critical dimensions of performance and reliability. Every aspect of its design has been refined to deliver uncompromising value to large-scale transit and logistics operations.
Encased in a premium stainless steel cover, this unit boasts exceptional resistance to corrosion and rust, perfectly adapting to the unpredictable and often harsh environments of mobile transit. Its compact and slim design ensures it occupies minimal overhead space, enhancing the interior aesthetics of any vehicle while facilitating straightforward maintenance.
Featuring an optimized fan wheel design, it projects a stable, uniform, and high-velocity airflow reaching up to 8.5 m/s. This robust air stream effectively isolates indoor and outdoor temperatures, preventing the loss of HVAC conditioning while blocking dust, insects, and exhaust, all while maintaining a whisper-quiet operation as low as 55dB.
At the heart of the system lies a heavy-duty DC motor engineered for high-demand environments. Equipped with an integrated overheating protector, it guarantees an impressive 5,000 hours of continuous, failure-free operation. Its shock-resistant and moisture-proof build significantly slashes long-term maintenance overhead.
Purpose-built for vehicular electrical systems, it operates flawlessly on 12V or 24V DC power. Available in four precise lengths—800mm, 1000mm, 1100mm, and 1200mm—it offers exact fitment for a wide variety of door widths across buses, trucks, RVs, and refrigerated transport vehicles.
Outfitted with advanced magnetic door switch technology, it delivers true open-to-start, close-to-stop automation. This intelligent operational cycle drastically cuts down unnecessary power draw, translating into significant fuel and electrical savings, which is especially crucial for refrigerated logistics and frequent-stop transit.
Designed for an optimal mounting height of 2.5 to 3 meters, the unit features a streamlined mounting interface for rapid deployment. The smooth stainless exterior and accessible internal components make routine cleaning effortless, minimizing vehicle downtime and maximizing fleet utilization.
Backed by rigorous testing in national-level environmental simulation laboratories, this series holds an array of prestigious international certifications including CE, RoHS, UL, CCC, and ISO standards. This guarantees absolute compliance, environmental safety, and paramount operational security for global deployment.
Making life more comfortable inside
The Theodoor Air Curtain produces a high speed air current, dividing the inside and outside of the room into two independent temperature zones with the result that levels of interior air conditioning are maintained and the air is purified whilst energy is saved. Summer heat, winter cold, dust, insects, smoke, unpleasant odors and exhaust fumes are all kept out.
Prevent the loss of cool or warm air whilst economizing on electricity.
Efficient dust and insect-proofing..
Protect against smoke and noxious fumes.
Accelerate air circulation
Founded in 2002, Theodoor is lccated in Guangzhou innovation and development new area-Sino-Singapore Krlowledge City (SSGKC) with an area of 30,000 square meters. we have modern production workshop,applying the most advanced industrial equipments and detecting instruments to provide produa manufacturing precision and stability of extremely reliable guarantee. Theodoor has fu11 series procluc which meet dlfferent customizec demand in different countrles or areas.
Powerful isolation, Efficient and energy saving
Air curtain is an air fresher equipment, to form an "invisible air door" by running of high speed motor with cross flow or centrifugal blower. It has been widely used in electronic, medicine making, food processing, precision processing, chemical, business areas and other industry. It can effectively isolate convection indoor and outdoor and keep temperature and humidity. Air curtain is also called air door, air barrier etc.
Dust-proof, insect prevention
Theodoor air curtain creates high speed and strong air flow, preventing dust from outside efficiently, deeping clean indoor environment.
Isolate the smell
Air curtain's high speed air flow can isolate outdoor gas and oil, poisonous gas. It also resists smells from kitchen, dining hall, chemical laboratory, freezer etc. Creating a fresh and comfortable environment.
Energy saving
The air door separates outdoor from indoor, resisting the escape of indoor cold air/warm air. Thus, it can save the energy consumption of air conditioner in a huge extent. Taking an important role for keeping constant temperature and saving energy in shops, restaurants, and other entertainment places, where have huge flow of people.
Comfortable heating
Theodoor heating air curtain series, water warm/vapor air curtain series with high safety performance and prompt temperature-rising could rise and keep temperature at entrance and exit, bring comfortable and warm feeling for passengers in winter.
Powerful engine, stronger performance
Generally used for the equipment to start and control speed at high performance requirements, which need high manufacturing cost, have good performance and good adaptability for humidity and corrosion environment.
Magnetic door switch is an additional switch device, which can be used for remote control and key switch type air curtain. The air curtain will start automatically when the door opened and shut down automatically after the door is closed.
Theodoor air curtain can be combined with weak or strong electricity door switch, and it is more convenient and eneygy-saving.
Intelligence
Inteligent induction design can start automatically when the door opened and shut down automatically after the door is closed.
Energy-saving
Timely opening, reduce energy consumption, energy saving.
Comfort
Automatic control, practical and convenience, more humanize.
Q: How does the magnetic door switch integration impact the overall energy efficiency of the vehicle?
A: The magnetic door switch automates the unit's operation, activating the air stream only when the door is physically open. This prevents continuous running, significantly reducing the electrical load on the vehicle's alternator and battery bank, which directly translates to lower fuel consumption and extended component lifespan.
Q: Is the stainless steel housing capable of withstanding the corrosive environments typical of refrigerated transport?
A: Yes. The exterior is crafted from high-grade stainless steel specifically chosen for its superior resistance to oxidation, moisture, and chemical exposure. It maintains its structural integrity and visual appeal even when subjected to the harsh, damp conditions of cold chain logistics.
Q: What makes the DC motor in this unit more reliable than standard AC motors for mobile applications?
A: Our custom-engineered DC motor is designed to handle the voltage fluctuations and constant physical vibrations inherent in mobile transit. It features advanced sealing against humidity, an integrated thermal overload protector, and boasts a continuous operational lifespan exceeding 5,000 hours without failure.
Q: Can this system effectively block heavy vehicular exhaust fumes in dense urban traffic?
A: Absolutely. By generating a high-velocity downward air barrier of up to 8.5 m/s, the unit creates a dense aerodynamic shield. This pressure differential effectively repels noxious gases, particulate matter, and urban smog, keeping the passenger cabin's air quality pristine and safe.
Q: What are the specific mounting requirements for optimal performance?
A: For maximum isolation efficiency, the unit should be mounted horizontally directly above the doorway at a height between 2.5 and 3 meters. The compact depth of 100mm ensures it can be installed in tight overhead spaces without interfering with door mechanisms or passenger headroom.
