Product Overview
The Explosion-proof Constant Temperature and Humidity Air Conditioner is developed by our company based on years of design and production experience in explosion-proof air conditioning. Adhering to the design philosophy of "Explosion-proof, Efficient, Energy-saving, and Environmentally Friendly," it features a compact structure, quiet operation, high reliability, energy efficiency, and superior explosion-proof performance. It is widely used for air temperature and humidity regulation in industries such as defense, chemical, power, pharmaceutical, and scientific research, as well as in hazardous locations where explosive atmospheres may be formed by mixtures of air and flammable gases or vapors of Groups IIA, IIB, and Temperature Classes T1-T4.
Product Features
● Explosion-proof: Incorporates the most advanced explosion-proof technology. It has passed inspection by the National Quality Supervision and Testing Center for Explosion-protected Electrical Products and obtained the explosion-proof certification. With a reliable explosion-proof rating of Ex d ib mb II B T4 Gb.
● High Efficiency: Utilizes internationally renowned hermetic scroll compressors for quiet and efficient operation. The heat exchanger employs inner-grooved copper tubes and hydrophilic corrugated aluminum fins, significantly improving heat exchange efficiency and the unit's overall energy efficiency ratio.
● Energy Saving: Unique system design and control logic allow the air conditioner's operation mode to adapt to changes in annual working conditions, enhancing the unit's seasonal energy efficiency ratio. It can introduce outdoor fresh air as needed by users. Simultaneously, the unit features a heat recovery function, which reduces operating costs, minimizes equipment investment, saves indoor space, and improves air quality. Additionally, an interface for an energy recovery ventilator can be reserved per user requirements. During transitional seasons and winter, if indoor cooling and ventilation are needed, the unit can introduce cold outdoor air indoors for ventilation and cooling, thereby reducing the main unit's load and lowering energy consumption.
● Environmentally Friendly: The unit can use environmentally friendly refrigerants like H407C. Motors are high-efficiency, low-energy consumption types, meeting national environmental protection requirements.
Structural Features
● Compressor: Selected international brand compressors ensure stable, reliable operation and high energy efficiency.
● Refrigeration Components: Refrigeration accessories such as expansion valves and filters are all brand-name products, offering stable and reliable performance.
● Heat Exchanger: Uses high-efficiency inner-grooved copper tubes and hydrophilic corrugated aluminum fins for high heat exchange efficiency.
● Fan: Employs high-efficiency, low-noise explosion-proof fans with reliable explosion-proof performance and smooth operation.
● Housing: Features a frame structure with plastic-coated steel panels. It is sturdy, aesthetically pleasing, and offers good corrosion resistance.
● Heater: Uses PTC electric heating, which effectively controls surface temperature. It is compact and has high heat exchange efficiency.
● Humidifier: Employs a high-efficiency humidifier that is easy to control, efficient, safe, and reliable.
● Explosion-proof Control Box: Strictly designed and manufactured according to national explosion-proof standards, ensuring reliable explosion-proof performance.
Other Features
● Control Method: Utilizes a high-performance microprocessor controller for high control precision and reliability.
● Intelligent Defrost: The dedicated microprocessor controller enables automatic defrosting during heating operation in winter based on actual conditions, preventing operational issues due to excessive frost buildup on the outdoor condenser.
● Multiple Protections: The unit includes protections against phase loss, short circuit, overload, overheating, high/low pressure, and under-voltage.
● Air Supply/Return Methods: Offers various air delivery methods such as front return/front supply and front return/top supply to meet different customer needs.
CNWINNEX explosion-proof systems are widely deployed in oil & gas, petrochemicals, pharmaceuticals, ports & terminals, mining, power generation, offshore platforms, and other areas where flammable gases or dusts are present. Typical applications include control room climate control, hazardous area logistics and access management, video surveillance & security, pressurized analyzer shelters, robotic inspection, as well as custom explosion-proof enclosures and system integration.
An explosion-proof air conditioner is a specialized HVAC unit designed for hazardous environments where flammable gases, vapors, or combustible dusts are present (e.g., petrochemical plants, gas stations, paint booths, pharmaceutical labs).
The most critical difference from a standard air conditioner lies in “active ignition prevention.” Standard units generate tiny sparks during normal operation – such as when relays open/close, compressors start/stop, or circuits make/break. While safe in normal air, these sparks can be deadly in an explosive atmosphere.
CNWINNEX’s explosion-proof design is based on the T4 temperature class. For high-temperature regions such as the Middle East or areas with extreme summer heat, we offer custom units rated for ambient temperatures up to 60°C (140°F) , ensuring reliable operation without overload in harsh tropical climates. For cold regions, we offer custom units rated for ambient temperatures as low as -50°C (-58°F) , guaranteeing safe operation in extreme arctic conditions.
The explosion-proof rating of CNWINNEX air conditioners is:
Ex 2 G D Ex db ib mb IIB T4 Gb / Ex 2 G D Ex db ib mb IIC T4 Gb / Ex ib mb tb IIIC T130°C Db
●For Gas (G): Ex db ib mb IIC T4 Gb
Suitable for IIC gas groups (including hydrogen, acetylene, etc.), using flameproof (db), intrinsic safety (ib), and encapsulated (mb) combined protection. Temperature class T4 (max surface temperature ≤135°C), Equipment Protection Level Gb.
●For Dust (D): Ex ib mb tb IIIC T130°C Db
Suitable for IIIC conductive dusts, using intrinsic safety (ib), encapsulation (mb), and dust-tight (tb) protection. Maximum surface temperature 130°C, Equipment Protection Level Db.
CNWINNEX products comply with international explosion-proof certification standards such as ISO, CNEX, ATEX, IECEx, SAA, EAC, ensuring safe use in different countries and regions., and BV or DNV (for offshore applications) . Depending on the product type and zone classification, we offer various protection concepts including Ex d, Ex e, Ex ib, and Ex nA, with ingress protection up to IP66/IP67, ensuring safe and compliant operation in hazardous environments worldwide.
Absolutely. Explosion-proof Custom Engineering is our sixth core business. From non-standard Ex components (special material junction boxes, intrinsically safe sensors, etc.) to integrated Ex systems (skid-mounted control rooms, pressurized cabins, legacy equipment retrofitting), we provide full-process custom services covering conceptual design, 3D simulation, compliance certification, manufacturing, and delivery. Simply share your operating parameters and functional needs, and we will engineer a dedicated explosion-proof safety solution for you.
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