Product Overview
This series of explosion-proof air conditioning units incorporates specialized explosion-proof design and processing technologies, offering a wide capacity range. Utilizing a complete set of high-quality, name-brand refrigeration components and precision engineering, the units ensure excellent overall performance, reliable operation, and low noise levels. They are widely applicable in explosive hazardous areas where flammable gases, vapors, or air mixtures of Groups IIA, IIB, IIC, and Temperature Classes T1 to T4 may be present, such as in scientific research, petroleum, chemical, pharmaceutical, processing, manufacturing, and biological industries, meeting environments with stringent temperature control requirements.
The products have passed China's National Explosion-proof Electrical Product Quality Supervision and Inspection, obtaining the required explosion-proof certification. They are also ATEX certified, complying with EU Directive 2014/34/EU and relevant EN standards. The series boasts an aesthetic appearance, rational design, and easy installation and maintenance. Featuring microprocessor control and digital display, they are user-friendly and exhibit stable performance.
Key Features
● Compressor: Equipped with internationally renowned brand hermetic compressors, offering high efficiency, energy savings, and superior performance.
● Heat Exchanger: Constructed from high-efficiency inner-grooved copper tubes and hydrophilic louvered aluminum fins, bonded via mechanical expansion for optimal heat transfer. The unique outdoor unit design ensures stable operation in high-temperature environments.
● Fan & Motor: Incorporates advanced explosion-proof centrifugal fans with dynamically balanced impellers for smooth, quiet operation with minimal vibration. Motors run quietly and reliably.
● Structural Design: The casing is made from high-quality cold-rolled steel with a polyester powder coating or embossed aluminum plate, providing corrosion resistance and a sleek appearance. The frame structure is lined with soundproofing and thermal insulation material to minimize cooling loss. An open design facilitates easy maintenance.
● Electrical & Control: Major electrical components are from well-known domestic and international brands. Electrical control components are housed within a flameproof enclosure type "d" control box. The microprocessor controller ensures precise temperature and humidity control, while intelligent logic guarantees stable and economical operation.
● Flexible Installation: Outdoor units can be installed on rooftops, balconies, or ground level. Indoor units (direct air supply type) can be positioned to optimize air circulation, suitable for large spaces.
● Explosion-proof mark: Ex db ib mb IIB T4 Gb / Ex db ib mb IIC T4 Gb, making them suitable for hazardous areas Zone 1 and Zone 2.
1. Rated cooling capacity test condition: Outdoor dry-bulb temp. 35°C, inlet water temp. 12°C, outlet water temp. 7°C.
2. Rated heating capacity test condition: Inlet water temp. 45°C, outlet water temp. 40°C; Outdoor dry-bulb temp. 7°C, wet-bulb temp. 6°C.
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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