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CNWINNEX EX-ART4 Explosion-Proof Compressor: A Modular Matrix and Wide-Voltage Range Customized for Global Hazardous-Area Thermal ControlIn hazardous-area thermal control systems, a compressor must not only deliver sufficient cooling capacity but also guarantee absolute explosion-proof reliability. As China’s only independently IECEx-certified explosion-proof compressor company, CNWINNEX’s affiliated company introduces the EX-ART4 series 4-cylinder explosion-proof compressors. Centered on static positive-pressure protection (pxb) and integrated with increased safety (eb), intrinsic safety (ib), and encapsulation (mb), this series provides a rock-solid safety foundation alongside a highly modular model design and broad electrical parameter matrix—delivering a precisely matched, highly robust core for global explosion-proof HVAC systems.- CNWINNEX Explosion-Proof Compressor: Static Pressurization + Multi-Layer Intrinsic Safety, an IECEx-Certified “Compliant Heart”The safety of an explosion-proof air conditioner is never determined by the enclosure alone. As the core moving component of the refrigeration cycle, the compressor is both the center of energy conversion and one of the potential ignition sources that most requires systematic control in hazardous areas. CNWINNEX’s affiliated company is China’s only explosion-proof compressor company holding an independent IECEx certificate. The compressor uses static positive-pressure protection as its primary structure, combined with an increased-safety junction box, intrinsically safe sensing and protection components, and a certified solenoid valve—forming a clearly layered, independently traceable explosion-proof system. Marking: Ex eb ib mb pxb IIC T4 Gb; ambient temperature range: -25°C ≤ Tamb ≤ +60°C.
CNWINNEX’s affiliated company is China’s only independently IECEx-certified explosion-proof compressor manufacturer. Certifed to IEC 60079-0/-2/-7/-11/-18, marking Ex eb ib mb pxb IIC T4 Gb, -25°C to +60°C. The compliant core inside CNWINNEX explosion-proof air conditioners.The compliance of an explosion-proof air conditioner begins with its most critical component. CNWINNEX’s affiliated company is China’s only explosion-proof compressor company holding an independent IECEx certificate—a qualification whose significance lies not in the document itself, but in the fact that it places the most critical moving part of an explosion-proof air conditioner within an independent, traceable, and verifiable international compliance framework. In oil and gas, chemical, offshore, and hazardous-material storage applications, the compressor is both the heart of the refrigeration cycle and a potential ignition source. The depth of a compressor’s explosion-proof compliance directly determines the safety margin and certification credibility of the complete unit in Zone 1 and Zone 2 hazardous areas.
CNWINNEX Explosion-Proof Split Wall-Mounted AC Passes IEC 60335-2-40:2022 Test Report and Achieves Australian SAA Certification, Expanding Its Compliance FootprintWe are pleased to announce that the CNWINNEX explosion-proof split wall-mounted air conditioner has successfully passed the TEST REPORT IEC 60335-2-40 after a 10-week operation testing period, and has concurrently obtained Australian SAA certification. With these milestones, CNWINNEX explosion-proof air conditioners now close the loop across three compliance dimensions—hazardous-area explosion protection, electrical safety, and Australian market access—meeting ATEX Directive 2014/34/EU and related compliance standards, and providing customers on global hazardous-area projects with a more definitive compliance foundation.
CNWINNEX BKT-26 Mobile Packaged Explosion-Proof Air Conditioner: 25kW Plug-and-Play Cooling for Temporary and Mobile Hazardous Work ZonesThermal control requirements in hazardous areas are not always fixed. Plant turnarounds, emergency repairs, confined-space operations, temporary hazardous-material storage, and temporary explosion-proof electrical rooms share a common profile: the work location moves, the deployment window is short, and explosion-proof compliance does not relax because the job is "temporary." Conventional fixed explosion-proof air conditioners struggle in these scenarios—long installation cycles, complex piping modifications, and equipment that cannot follow the work face. The CNWINNEX BKT-26 Mobile Packaged Explosion-Proof Air Conditioner is engineered to fill this gap: 25kW cooling capacity in a fully integrated monoblock, heavy-duty swivel casters with brakes, and dual lifting provisions (top lifting eyes and bottom forklift pockets) that let an Ex db ib mb IIC T4 Gb certified unit be moved, positioned, and commissioned as work demands shift.
CNWINNEX Rooftop Packaged Explosion-Proof Air Conditioner: 200kW All-in-One Thermal Control That Rethinks Installation for Marine & Offshore Hazardous AreasLarge-capacity climate control in hazardous areas has long carried a structural contradiction. Split explosion-proof systems distribute the compliance burden across indoor units, outdoor units, refrigerant piping, and on-site coordination—each interface a potential gap in the certification chain and a drag on project schedules. Conventional floor-standing or cabinet units, meanwhile, consume premium work area in spaces where every square meter already carries operational and safety value. The CNWINNEX Rooftop Packaged Explosion-Proof Air Conditioner resolves this by moving integration upstream: cooling, heating, humidification, steam heating, and the complete explosion-proof electrical control system are assembled and factory-tested in a single rooftop monoblock. On site, only power, water, and duct connections remain. With 200kW rated cooling and heating capacity and 36,000 m³/h airflow, it delivers centralized, uniform thermal control within an ATEX Zone 1/2 compliance envelope.
CNWINNEX Explosion-Proof Split Wall-Mounted Air Conditioner: Wide-Temperature Cooling from -7℃ to 55℃ for ATEX Zone 1 & 2 Hazardous SitesIn oil and gas stations, chemical plants, and high-temperature work zones on offshore platforms, the question is not whether an air conditioner can cool—it is whether it can keep cooling when the ambient temperature pushes past 55℃, while simultaneously meeting the non-negotiable compliance requirements of Zone 1 and Zone 2 hazardous areas. Safety and performance are not a trade-off. They are the baseline.
The CNWINNEX split wall-mounted high-temperature explosion-proof air conditioner is engineered for exactly this intersection. It delivers stable cooling across a -7℃ to 55℃ ambient range, operating reliably through both extreme heat and sub-zero cold. With explosion protection marking Ex db mb IIC T4 Gb, it is suitable for Zone 1 and Zone 2 explosive gas atmospheres and designed in strict compliance with ATEX Directive 2014/34/EU.
CNWINNEX Engineering Explosion-Proof AC Systems for 50°C OperationDesigning cooling equipment for 50°C ambient conditions compounds the challenges of explosion protection. Heat rejection becomes progressively more difficult as the temperature differential between the condenser and surrounding air shrinks. A unit rated for 35°C ambient may lose 30% or more of its cooling capacity at 50°C—assuming it continues operating at all. Material selection determines whether components survive sustained thermal stress: seals that remain flexible at moderate temperatures can harden and crack at 50°C, compromising both explosion protection and refrigerant containment; lubricants thin under heat, accelerating bearing wear; electronic control boards experience accelerated aging when junction temperatures climb.
CNWINNEX Explosion-Proof HVAC Unit for Pressurized Rooms
CNWINNEX Explosion-Proof HVAC Unit for Pressurized Rooms
Product Overview
For Zone 1 and Zone 2 hazardous areas with flammable and explosive gases in high-risk industries such as petroleum, chemical and pharmaceutical industries, explosion-proof pressurized rooms serve as safety isolation spaces for instrument control rooms, analytical laboratories and metering rooms. Stable control of indoor temperature, humidity and positive pressure is critical to protect equipment and personnel.
CNWINNEX explosion-proof HVAC unit for pressurized rooms is an packaged unit with reliable explosion-proof performance, compact structure and elegant appearance. The enclosure can be SS304, SS316L stainless steel or powder-coated carbon steel to adapt to corrosive, humid and other harsh working conditions. The unit integrates cooling, heating, dehumidification, ventilation and positive pressure maintenance. It is fully assembled before delivery without ductwork and supports customization according to project requirements.
Core Advantages
● Positive Pressure Safety Protection, Build Explosion-Proof Barrier
The unit maintains stable positive pressure inside the pressurized room to prevent ingress of flammable and explosive gases, complying with Zone 1 & Zone 2 hazardous area standards. It protects precision analytical instruments, control systems and on-site operators.
● Intelligent Automatic Control for Unattended Continuous Operation
It supports automatic restart after power recovery and resumes preset operation without manual intervention. Optional RS485 communication enables remote monitoring via plant central control system. Reserved dry contacts support fire alarm interlock to integrate with modern factory safety systems.
● High-efficiency Heat Exchange System with Low Long-term Failure Rate
The heat exchanger adopts internally threaded copper tubes with hydrophilic aluminum or copper fin sheets, processed by advanced tube expansion technology to maximize heat transfer efficiency. Optimized compressors and refrigeration components solve common defects of traditional explosion-proof air conditioners such as insufficient cooling/dehumidifying capacity and frequent cycling, reducing maintenance cost and extending service life.
● Integrated Standalone Design, Simple Installation & Maintenance
Supplied as a complete standalone assembly, no ductwork required. A full range of models with wide cooling capacity options to match pressurized rooms of different volumes. Modular internal layout provides convenient access for inspection and maintenance. Custom development is available upon customer requests.
Application
Petroleum, chemical, biopharmaceutical, oil & gas energy industries. Suitable for instrument control rooms, explosion-proof analysis rooms, laboratories, metering rooms and skid-mounted pressurized shelters in Zone 1 / Zone 2 hazardous areas.
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