Product
- Industrial Centrifugal Fan -- Low Pressure -- High Pressure -- Plug Type -- Plenum fan -- FRP Centrifugal Fan
- Inline Fan - Axial Fan - Centrifugal Fan - Mixed Flow Fan
- Roof & Sidewall Fan -- Roof Fan -- Sidewall Fan
- DWDI AHU Fan
- Tunnel Fan &
Metro Fan - Induced & Kitchen Fume Extractor Fan
- EC Fan
- Other
- Intelligent Control
- Fresh Air and Heating Unit
- INFINAIR Motor
- Customization
Backward Curved DWDI Centrifugal Fan - YFBCDL
Airflow Range: 1,000 ~ 260,000 m3/h (588 ~ 152,941 CFM)
Total Pressure Range: 200 ~ 3,150 Pa (0.8 ~ 12.65 in.WG.)
Drive Types: Belt drive
Applications: AHU fans, HVAC fans, air purifier fans and ventilation fans among others
For reference only. Please contact our sales rep for detailed performance fan curve. Thank you.
Wheel
Design of Backward Curved Wheel
- -- The fan adopts advanced technology. Design of backward curved centrifugal wheel is optimized by means of CFD hydro-field simulating. The design is more accordant with the aerodynamic characteristics, and has lower noise, and stable airflow.
- -- Steel plasma cutting, precise positioning jig and all-welded manufacture.
- -- Steel Jaser cutting, precise positioning jig and all-welded technique are adopted for the blade to ensure smoothness of the margin of the blade. The welding angle is accurate, the whole blade is with strong strength, and the stress is evenly distributed during long-time high-speed operation. The operation is stable and reliable.
- -- Each wheel is subjected to dynamic balance test. We insist to the balancing level of G4.0 (Typical products are balanced to G6.3 only). Long-term quiet and stable running of the fan is ensured fundamentally.
- -- Large volume and wide high-efficiency range.
- -- Double air inlet structure is applied to the wheel, which ensures a large volume. In addition, the pneumatic performance of the wheel is smooth and flat, and has a wide high-efficiency range.
Feature
- All-steel Welded Structure
- -- The FEA theoretical design structure is adopted for the main body of the fan. It is made through welding the steel plates, which ensures a stable structure and high strength of the fan, as well as better safety performance.
- -- Continuous welded scroll, ensuring excellent air-tight performance.
- -- The scroll of the fan is made of steel by continuous welding, which ensures excellent strength of the scroll, and meanwhile prevents leakage of gas.
- High Reliability
- -- Fan shaft is subjected to finish turning & hardening and tempering. Maximum load surpasses 35% of limit speed.
- -- Bearing seal can be lubricated. Service life more than L10:80000 hours.
- -- The fan is supported by stable channel steel base, so that stable running of the fan is ensured.
- High Energy Efficiency Classification
The fan adopts backward curved wheel with high balancing level and high efficiency. In combination with housing designed by CFD flow field simulation and inlet Venturi pipe, fan Energy Efficiency Classification up to FEG80 (AMCA 205), and high-efficiency and energy-saving operating of the fan is ensured.
- Convenient Mating Device
Design of the fan (A6 drive arrangements) ensures that the driving mechanism could be installed on both ends of the shaft. Driving mechanism of right-handed rotation or left-handed rotation could be adopted as the mating device according to actual needs.
Technical
- Fan Type
The fan shall be single inlet with steel backward curved centrifugal wheel. The drive type shall be direct drive, coupling drive and belt drive. Structure of the fan shall allow convenient withdrawal of the wheel for maintenance and cleaning.
- Quality Standards
The fan shall be tested in accordance with AMCA Standard 210 and 300, The manufacturer must own the production license for industrial products and ISO9001 quality system authentication.
- Wheel
The wheel shall be steel backward curved centrifugal and fully welded. The wheel shall be statically and dynamically balanced to level G4.0 in accordance with AMCA204. When the wheel is operating at the highest allowable speed, the volume shall be stable and the noise shall be low. Wheel features shall be able to avoid performance downgrade resulting from sliding of the working points. Wheel material shall be Q235 for the temperature under 60 degrees centigrade, Q345 for the temperature between 61 and 250 degrees centigrade, and 304SS for the temperature between 251 and 450 degrees centigrade to ensure the wheel’s strength and no creep deformation in high temperature and high speed running in working condition
- Fan Housing
The fan housing shall be steel, the thickness and strength shall be adequate to support fan max running weight. The volute shall be continuously welded and equipped with access door for removing possible foreign objects entered into the scroll.
- Inlet
Fan inlet shall be aerodynamic design round curved section to smoothly transit the air to the wheel cone, it will have good commutate effect to effectively reduce turbulence, improve fan efficiency and reduce noise.
- Coating
Fan surface shall be polished and cleaned up to remove particulates, welding slag, burrs, sharp edge, iron, oil, then epoxy coating or high temperature coating for high temperature environments use, fan surface shall be free of sags, wrinkle, blisters, exposed metal or peeling after coating. It shall be no corrosion and rust at least 10 years in allowable working condition.
- Transmission Device (Only for belt drive and coupling drive type)
Fan shaft shall be heat treated through soaking furnace to the hardness level between 251 and 450 degrees centigrade, and the maximum load is 35% higher than that of the max RPM, the shaft shall be furnished with cover. The material of shaft shall be 40Cr when the working condition temperature under 250 degrees centigrade, and shall be 35CrMo when the working condition temperature between 251 and 450 degrees centigrade. The support structures shall be whole drum-type bearing box. The bearings shall be selected for a minimum (L-10) life in excess of 80,000 hours at maximum cataloged operating speed. The bearing lubrication shall be adopted thin oil between N32 and N46, the amount of lubrication oil shall be according to the requirements of the oil level mark. The Bearing box shall be equipped with water cooling device for choosing whether or not through water according to the conditions in the field for the temperature between 61 and 250 degrees centigrade. The Bearing box shall be equipped with water duct and through water for the temperature up to 250 degrees centigrade, the water consumption increased as the temperature varies, generally can be considered as 0.3~1m3/h. The pulley shall be constructed of cast-iron; Fan pulleys shall be sized for a minimum of 130% of driving power. The pulley and belt shall be furnished with cover. The coupling shall be elastic coupling with cover, too. Its safety of conveying power and torsion shall meet the design requirements.
- Motor
Motor shall be carefully matched to the fan load, IP54, and insulation class F. Motor bearings shall be lubricant ball type. Motor and drives shall be out of the air stream to avoid grease or dirt accumulation.
- Explosion-proof Structure (Only for explosion-proof type)
Fan shall conform to Spark C explosion-proof structure according to AMCA99 Standard. The inlet shall mount copper ring and the motor shall adopt explosion-proof type. The whole fan should own CNEX certification and the manufacturer must own the production license for anti-explosion electric products.
- Nameplate
Permanently fixed aluminum nameplate shall be fixed on fan body clearly display fan mark, product model and serial number (i.e.: unique ID for each fan), so that the customer can use this number to find out the parts used.
Company Video
Welcome to INFINAIR. This video is about our company, including history, products, value, service, technology, production and future. Integrated with R&D, tailor making, manufacturing, and international service ability, INFINAIR provides you complete, high-quality ventilation and industrial process air solution
Company Profile
INFINAIR is an innovative company which provides environmental and intelligent solutions for all aspects of ventilation systems in both private and public sector. They have been INFINAIR’s core values and commitments to our customers over the years.
Trademark： INFINAIR
Established Since: September 2003
Paid up capital: 50,000,000 RMB
Architectural area: 33,000 ㎡
Address: No. 55 Qingneng Road, Waigang Town, Jiading District, Shanghai, P. R. China
Sales & Service Office:
Our sales and after-sale service network promise easy access to customers anywhere in China. They are located in various locations: Shanghai, Beijing, Shenchen, Jilin, Liaoning, Tianjin, Shanxi, Henan, Shaanxi, Shandong, Jiangsu, Anhui, Zhejiang, Fujian, Zhongqing, Sichuan, Hunan, Hubei, Guangdong, Guangxi, Hainan, Guizhou and XinJiang.
Company Vision:
To become the most trusted brand of professional air movement & control solution provider.
Company Mission:
To provide the most reliable and user-friendly air movement & control system.
Product value proposition of INFINAIR: Reliable, Convenient, and Novel.
1. Reliable
At INFINAIR, we prioritize reliability in our products and services. INFINAIR focuses on high-quality system construction, we commit to the constant improvement of product and service reliability:
R&D ability as the basis of product reliability:
At INFINAIR, R&D ability is at the core of our product reliability. Thanks to the extensive experience, INFINAIR has mastered CFD, FEA and CAD technology, fundamentally and significantly improving product reliability. INFINAIR’s air performance lab and noise lab both play a part in forming a solid foundation for product reliability in terms of test scope and precision, as well as in overall investment and construction scale. Our labs are accredited by CNAS, and INFINAIR also boasts the first lab in Mainland China accredited by the AMCA.
Technology and Equipment Reliability Guarantee:
By continually investing in improvements to processing technology and equipment, INFINAIR constantly increases and improves processing capability and precision, assembly methods, production processes, online monitoring, and pre-distribution testing, guaranteeing an ever-increasing level of product reliability.
Third party certification as further proof for reliability:
INFINAIR possesses various third-party qualifications including: Industrial Product Production License, Explosion-Proof Production License, as well as certifications such as ISO 9001, ISO 14001 and OHSAS 18001 qualifications. Most INFINAIR products are compliance-certified by a third party. INFINAIR is the industry leader in terms of both the number of certifications and how long we have held these certifications.
Quality-management system and ongoing reliability:
INFINAIR utilizes an ISO 9001-compliant quality management system, certified by SGS. We constantly carry out 5S and lean production Six Sigma improvement, meticulously establishing a sustainable quality management system.
2. Convenient
INFINAIR features:
-- Complete product configuration and varied impeller forms.
-- Adaptable product selection.
-- Flexible lead time.
-- Quick customization.
-- Prudent product accessory options.
-- By your side service team and quick courier delivery service.
3. Novel
At INFINAIR, we not only pursue products that are like no other, we also pursue innovation. Both of these pursuits aim to give our clients better value.
We offer:
-- Greater aerodynamic performance, energy-saving ability, and noise reduction ability.
-- Simplified, rationally-developed structures.
-- More convenient installation and use.
-- Low maintenance, low total cost of ownership.
-- Adaptable and pragmatic post-sale service.
INFINAIR Laboratory
INFINAIR laboratory is the first AMCA accredited air performance and sound testing laboratory in the mainland of China.
INFINAIR laboratory has successfully obtained the CNAS Laboratory Accreditation Certificate and enlisted in the Chinese National Accredited Laboratory Directory.
Laboratory Accreditation Certificate Issued by CNAS (Chinese National Accreditation Service for Conformity Assessment)
Laboratory Accreditation Certificate Issued by AMCA (Air Movement and Control Association)
All testing procedures at INFINAIR’s air performance and sound testing laboratory are done according to the following standards:
1. All design, fabrication and testing guidelines are in strict accordance with AMCA 210, AMCA 300, ISO 5807, GBT 1236, ISO 13350 and GBT 10178 standards.
2. The INFINAIR laboratory has replaced the simple cardboard shielding method duct test with a new generation of precise-flow nozzle matrix systems.
3. Advanced and sophisticated testing equipment are being used in the laboratory.
4. All equipment used in the laboratory are calibrated and inspected regularly.
5. When comparing the results of same-sample inter-lab tests, the INFINAIR lab test results’ margins of error are within the precision and error requirements specified by relevant international/national standards.
INFINAIR laboratory also has the following test capabilities:
1. perform overspeed test in accordance with JB/T6445 Overspeed test for industrial fan impeller;
2. perform vibration test in accordance with JB/T8689 Fan vibration detection and its limited value and other related standards;
3. perform thrust test for tunnel jet fans in accordance with ISO13350 Industrial fan-Performance testing of jet fans;
4. Designed in accordance with such standards as EN 12101-3 and UL 793, INFINAIR laboratory has built high-temperature furnaces for smoke removal fans for performance tests and as a witness test platform for obtaining TUV, UL and other overseas certifications.
INFINAIR laboratory can perform other tests, such as high and low temperature resistance test, water spray and splash test, physicochemical test, dust test and so on. The laboratory helps ensure precise tests for reliable product quality and accurate technical data.
R&D and Innovation
INFINAIR's Numerical Simulation Technology
INFINAIR owns the industry-leading CFD technology
INFINAIR Research Institute masters a set of core CFD technology combining theory with practice owned by INFINAIR itself. Through a large number of repeated engineering applications for many years, now, INFINAIR’s CFD capability is mature and accurate. Besides, in combination with internationally accredited precision laboratories, Our CFD processes have been repeated hundreds of times to allow for comparison between theoretical values and test results, accumulating valuable test data.
CFD is an important R&D capability of INFINAIR’s Research Institute;; it is featured of high calculated result reliability and fast calculation process. By means of the all-series product utility module system, it can reduce the module development cost of new product at the same time of offering fast customization to customer, and ensure economy while realizing customization.
Successful cases of INFINAIR CFD technology:
1. INFINAIR product generally adopts CFD for systematic development and optimized design, and this is just why INFINAIR is capable of supplying more energy-saving and more efficient products with lower noise. Please see following picture of simulated aerodynamic performance process of INFINAIR complete mixed flow fan, a certain new box-type fan of INFINAIR and a certain centrifugal fan of INFINAIR.
CFD flow field pressure and rate of INFINAIR patented complete mixed flow fan (process illustration)
CFD flow field trace of a certain new box-type centrifugal fan of INFINAIR (process illustration)
CFD analysis for inducing fan of garage (process illustration)
2. With respect to garage ventilation system optimization, INFINAIR has successfully developed a new, complete series centrifugal inducing fan with high static pressure as wehll as far projection distance, and guide the ventilation system layout of underground garage of customer. The following is the flow field layout simulation of an underground garage.
INFINAIR has mature FEA technical capability
1.In the practice process of FEA technology for many years, INFINAIR has accumulated a large number of data and experience which are suitable for actual physical property of common materials in China market.
2.INFINAIR Research Institute fully calculates and repeatedly adjusts the material type, material thickness, structural form and processing way in design stage to ensure that the parts can resist various pressures in operation, ensure that the fan can operate reliably for a long time, and ensure that the product cost is reasonable.
3.The final product scheme goes through the reliability verification of INFINAIR laboratory, conducts failure analysis and life extension analysis for products suffered aging test, reaches a definite conclusion, and thus reasonably saves equipment investment while improving product reliability.
CFD flow field pressure cloud of a certain centrifugal fan of INFINAIR (process illustration)
——Numerical simulation technology CAE
1.Numerical simulation is a kind of application of Computer Aided Engineering (CAE), mainly includes two core technologies of CFD and FEA.
2.CFD is short for Computational Fluid Dynamics. CFD simulate-calculates the product performance inside computer, provides guidance for aerodynamic model design (optimize the number of blades, angles and widths) and noise prediction of fan, especially impeller, and thus helps the designer basically predict the final aerodynamic performance without producing so many prototypes, consequently realizes quick customized design or systemic optimization.
3.As a “virtual laboratory”, CFD can realize fast iteration, save cost and reduce R&D period, is a strong tool for effective and reliable fan R&D and non-standard customization, and will provide accurate scheme for optimization of ventilation system.
Process illustration of FEA stress distribution for customized centrifugal fan impeller made by INFINAIR
Successful cases of INFINAIR FEA technology:
1.The following is process illustration for a customized fan analyzed by INFINAIR Research Institute . According to the system natural vibration characteristics of the customer, INFINAIR Research Institute makes vibration mode analysis for the overall customized fan, achieves structural optimization, avoids resonating with system, and ensures that the fan can operate reliably for a long time.
Modal analysis for fan frame made by INFINAIR Research Institute through FEA
2.In order to analyze the bearing and deformation of motor platform in operating process, INFINAIR Research Institute conducts modal analysis based on FEA technology.
R&D and Innovation: R&D team
INFINAIR Research Institute focuses on “product life cycle” and is fully responsible for management of all products. The responsibilities are as follows:
1.Fundamental research of hydromechanics;
2.Market research of ventilation, gas heating, motor, air purification and automatic control of ventilation system;
3.Product planning, R&D and manufacturing;
4.Customization;
5.Market launch and promotion, maintenance and update/obsolescence;
6.Product experiment and test, product certification;
7.Order processing and technical support.
As a new high-tech enterprise in Shanghai, INFINAIR Research Institute has an excellent technical talent team combing elder, middle-aged and young people and an effective talent cultivating mechanism. Immersing in Youth Culture of Ready to learn, Hard-working, Enterprising, Forward-looking, Innovative, Pioneering for a long time, INFINAIR R&D team has cultivated innovative spirit which has become source for core competitiveness of company.
INFINAIR Research Institute always takes Reliable, Convenient, Novel as the basic concept of product R&D and design. Under the guidance of the spirit and concept, the institute has reached innumerable great achievements, obtained more than 40 patent certificates and won many honors, it has launched many products for the first time in industry, what is more important is that INFINAIR Research Institute takes “at customers’ side” and resolving practical product issues for customer as an important work habit, and thus creates valuable and satisfactory experience, gains full trust of customer. INFINAIR Research Institute will never stop innovating.
Production Capacity
Advanced Technology and Equipment Ensure Product Reliability--Much to expect from just having excellent design and a precise detail-oriented drawing? In fact, there is still a long way to go before finalizing a reliable product that comes only from high processing precision and advanced technology.
-- INFINAIR has put to use a large number of high-precision CNC processing machines. Besides, INFINAIR has produced lots of special-purpose equipment and core molds through its independent R&D efforts.
--Also, R&D staff and production workers at INFINIAR are mobilized to promote technological improvements through concerted efforts. By analyzing onsite issues and sharing the actions for improvement, product reliability has been continuously enhanced with the help of wisdom of frontline workers.
Reliability Certified by Quality Control Systems
--INFINAIR has been awarded triple certification in ISO9001, ISO14001 and OHSAS18001 by SGS, a world famous certification agency.
--INFINAIR performs tests on key points at all stages of production and products must be rigorously tested before leaving the factory to ensure reliability. A case in point: INFINAIR made huge investments in building a vibration test bench on the production line and importing dedicated test equipment from Germany for greater accuracy. This bench covers 180 square meters with its foundation reaching 20 meters underground.
--Furthermore, INFINAIR works with consulting companies to launch 5S programs and take the Six Sigma approach to the continuous improvement of products. In this way, abilities of staff can be improved and a sustainable quality management system built.
The TÜV SÜD Certificate
AMCA accredited lab
AMCA membership certificate
Numerous Product Patents
CE Certification
CNAS lab accreditation
ATEX Certification
ISO 9001 quality management system
OHSAS 18001, Occupational Health and Safety Assessment Series
ISO 14001 environmental management system
Explosion-Proof Certification
Fire Fighting Certification
Case Study
This video is about a signature airport job of INFINAIR ventilation. We participated and competed the bidding for this ventilation project - Xinzheng Airport in 2014.
With the lack of fossil fuel and aggravation of pollution, nuclear power is the unique new power can be Large-scale applied with great prospect.
The Dongfeng Yueda KIA is an joint-venture of Dongfeng Motor Corporation、Jiangsu Yueda Investment Co. Ltd and Korean KIA Automatic Vehicle. Ltd, partly occupying respectively 25%、25%、50% of the company.