◆ SDB产品特点

   Product  Feature

★ SDB箱式风机设计在保证消防安全的前提下，特别考虑降低噪音，消音材料的选择，消音层设计等方面做了大量的研究和实践。风机进口两侧空间与入口直径比符合AMCA标准值。经过测试，SDB系列风机箱的声功率级比同系列单层箱体产品低10分贝左右。是降低噪音排风的理想选择，特别适合需要安静的场所使用。

A lot of research has been focused on reducing noise level generated by the fan .This research includes acoustic evaluation of the fan structure, careful selection of the insulation material, and optimal acoustic lining. The ratio of reserved distance from sidewall to inlet bell compare with inlet  bell diameter designed according to AMCA recommandation .The sound power level of the SDB double wall fan model is rated at 5-7dB(A)below that of the single wall model.SDB is an ideal choice for low noise Ventilation requirements, and is especially suitable for large public buildings.

◆用途示例

A.低噪音风机箱（A型：电机内置，D型：双层消声箱体）

B.普通经济型风机箱（A型：电机内置，S：单层箱体）

C.消防排烟风机兼普通排风（B型：电机外置，D：双层箱体）

D.消防系统正压送风机（B型：电机外置，D单层箱体）

E.厨房排油烟用，对环境噪声要求较高（B型：电机外置，D：双层箱体）

A. low noise cabinet fan (Type A :Motor positioned in 

 air flow pathwan ,

   D:Double wall insulation)

B. Economical duct fan(Type A:Motor positioned in air flow pathway,

   S:Single wall housing)

C. For both smoke removal and normal exhaust (Type B:Motor positioned

   Away from air flow, D: Double wall insulation)

D. Positive pressure supply fan for smoke emergency (Type B:Motor positioned

   Away from air flow, S: Single wall housing)

E. Kitchen exhaust fan, low noise type (Type B: Motor positioned away from air flow, D: Double wall insulation)

◆认证和规范

Certificates and regulations

SDB箱式风机经**固定灭火系统和耐火构件质量监督中心’检验，符合标准要求。按照《消防排烟风机耐高温试验方法》检验，主风道介质温度为280摄氏度连续运行30分钟以上，符合耐高温性能要求。

SDB箱式风机符合国际《汽车库，修车库，停车库设计防火规范》的需要，可作为上述场合机械排烟和通风使用。

SDB fans are tested by the “China National Fixed Fire Fighting System and Fire Resistant Components Quality inspection and Testing Center”. The fan typical performance is approved in compliance with the “General Usage Centrifugal Fan Technical Specidication”(China Nation Standard GB/T13275-91).The Fans are also tested according to the China Standard GA211-1999”Fire Fighting Smoke Removal Fan High Temperature Testing Method”, run continuously over 30 minutes at a main air duct temperature of 280c.The Fan are certified to resist high temperatures.

SDB fans comply with the China Nation Standard GB50067-97(“Codes of Fire Fighting Design of Garage/Car

Repairing facilities/parking lot”)

◆可靠的选型规范

SDB产品根据‘前弯叶片’和‘后向叶片’叶轮类型的不同特性，仅使用各自性能优良的部分工作区域。在产品设计中已经进行了优化，提高了选型质量，每条性能曲线去掉了两端不良部分，避免了低效率及喘振区域。

Model selection quality improved

Factory optimized design :model selection quality improved COOK has identified different characteristics between the forward curved and the backward inclined wheels, its designs are based on those working areas with optimal performance ,to maximize the fans performance Scope ,reduce the risk of inappropriate model application, and improve the model selection process. Both ends of the performance curve (of either low efficiency or surge )have been eliminated from the design process, with the remaining area fully described by 6 working points .This further enhances the reliability and precision of the model selection.

◆千变万化的搭配选择

SDB箱式风机为客户提供了多种配置，可根据客户要求的性能特点，实际用途，现场情况，及资金情况自主选择配置。如决定电机位置，箱体消声级别，用何种材料等等，以**适合的搭配方式来选择**满意的产品。

More benefit for customer

SDB offers a number of different fan configurations, to cater for different customer requirements. Customers may consider such factors as motor position, acoustic insulation type and housing material on the basis of Different performance and application requirements, or site-specific demands as well as total budget. DIY (Do it yourself) flexibility in the fans configuration adds value to the customers investment.

◆优质的电机选择

电机噪声是风机整体噪音中重要的部分，因此电机选择十分严格，库克风机所选电机均为国内外知名厂家产品，并使用优质轴承，从而保证了电机的低噪声。

Critical motor selection

As the level of noise generated by the motor is critical, COOK carefully selects the motors. We work with well known motor suppliers and use only imported bearings inside the motor to ensure the motor noise level is minimized and falls within the recongnized COOK range. For two -speed motor, the high/low power combination is more suitable for fan application.