NEWS

In 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.

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.

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.

We 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.

Thermal 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.

Large-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.

In 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.

Designing 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.

The CNWINNEX explosion-proof screw air-cooled chiller (heat pump) is designed and manufactured in strict compliance with the EN 60079 series explosion protection standards and conforms to ATEX Directive 2014/34/EU, featuring reliable quality and superior explosion-proof performance. The unit is mainly suitable for the petroleum, chemical, electric power, military and pharmaceutical industries, and is applied in hazardous areas of Zone 1 and Zone 2 where explosive atmospheres formed by flammable gases or vapours of Group ⅡA, ⅡB, ⅡC and temperature classes T1~T4 mixed with air may exist. Explosion-proof marking: Ex db mb IIC T4 Gb, suitable for Zone 1 and Zone 2 explosive hazardous areas. With advanced twin screw compression technology, intelligent control system and reliable explosion-proof design, the unit provides efficient, stable and energy-saving chilled (or hot) water supply for high-hazard industrial sites.

The CNWINNEX trailer type packaged explosion-proof air conditioner (BKT-65) is a mobile integrated air conditioning unit specially developed for explosive hazardous areas in the petroleum, chemical, electric power, military and pharmaceutical industries. It is suitable for sites where explosive atmospheres formed by flammable gases or vapours of Group ⅡA, ⅡB, ⅡC and temperature classes T1~T4 mixed with air may exist. The unit is designed and manufactured in strict compliance with ATEX Directive 2014/34/EU and the EN 60079 series explosion protection standards. Explosion-proof marking: Ex db ib mb IIC T4 Gb, suitable for Zone 1 and Zone 2 explosive hazardous areas. Complete explosion-proof technical documentation is supplied to support HSE review and site acceptance for projects worldwide. The trailer-mounted packaged design enables rapid relocation and plug-and-play operation, delivering stable and reliable cooling for high-temperature and high-hazard work sites.

The CNWINNEX high-temperature cabinet explosion-proof air conditioner is specially developed for hazardous sites with high ambient temperature (53℃~85℃) where flammable and explosive gases or dust exist, suitable for explosive gas atmospheres of Group ⅡA, ⅡB, ⅡC and temperature classes T1~T4 in Zone 1 and Zone 2 hazardous areas. The unit is designed and manufactured in strict compliance with ATEX Directive 2014/34/EU and the EN 60079 series explosion protection standards. Explosion-proof marking: Ex db mb IIC T4 Gb, suitable for Zone 1 and Zone 2 explosive hazardous areas. Operating stably in high-temperature harsh environments, the unit effectively lowers local ambient temperature and provides a comfortable and safe working and living environment for personnel. It is widely applied in high-temperature or desert regions such as the Middle East, Africa, South America and Xinjiang in China, as well as in the petroleum, chemical, metallurgical, electric power and pharmaceutical industries

The CNWINNEX explosion-proof air-cooled chiller is designed and manufactured in strict compliance with ATEX Directive 2014/34/EU and the EN 60079 series explosion protection standards, ensuring reliable quality and superior explosion protection performance. It is suitable for hazardous areas where explosive atmospheres formed by flammable gases or vapours of Group ⅡA, ⅡB, ⅡC and temperature classes T1~T4 mixed with air may exist. Explosion-proof marking: Ex db mb IIC T4 Gb, suitable for Zone 1 and Zone 2 explosive hazardous areas. Complete explosion-proof technical documentation is supplied to support HSE review and site acceptance for petroleum, chemical, electric power, military and pharmaceutical projects worldwide.