· Maintenance-Free Permanent Magnet Motor
· 15,072 m³/min full load air volume
1.5 kW/h motor power
There are numerous methods for waste disposal in our country, such as recycling, sanitary landfilling, incineration, and composting. The disposal methods vary depending on the type of waste. Currently, waste incineration for power generation has become the mainstream approach to waste management. Many cities are concentrating on incinerating domestic waste to achieve reduction and harmless treatment, while the heat produced from the combustion can also be used for power generation, realizing the recycling of waste.
The widespread adoption of waste incineration power generation in major cities is not only due to its harmless and reduced treatment of waste, but also because its concept of sustainable development and resource reuse has gained widespread social recognition.
Waste incineration power plants differ fundamentally from other power plants. The composition of each fuel in waste incineration power plants varies, as does the design requirements for ventilation equipment. The fuel for waste incineration power plants is complex domestic waste, whereas the fuel for conventional power plants is coal and the like. Therefore, the ventilation design process must also be distinct from that of other power plants.
The characteristics of waste incineration power plants include: Firstly, the pollution generated during the waste disposal process, such as odor and microbial pollution, which must be effectively treated to prevent serious impacts on local health. Secondly, secondary pollution may occur during the waste treatment process. Therefore, waste incineration power plants must incorporate ventilation design during waste handling. This design not only meets the requirements of the construction and power industries but also addresses specific needs of the waste-to-energy plant to ensure no secondary pollution is produced during power generation and to minimize environmental impact.
The waste pool employs a ventilation system with mechanical exhaust and natural makeup air. The mechanical exhaust utilizes industrial fans, with a airflow rate of 14,130 m³/min. Due to the fact that the leachate exceeds the standard for pollutants such as CODcr, BOD5, NHs-N, and there are also corrosive gases and pollutants like halogenated aromatic hydrocarbons, viruses, and heavy metals, a corrosion-resistant and explosion-proof industrial fan should be chosen.
The odor from waste incineration power plants is mainly concentrated in areas such as the garbage pool, unloading hall, and near the de-ironing equipment. Employees should pay special attention to deodorization in these locations. Install industrial fans for deodorization in the material discharge hall and ash room, utilizing physical technology for deodorization.
Waste incineration power plant ventilation technology is a new technique that, when applied, can address the secondary pollution issues caused by waste incineration, playing a better role in environmental protection.
Due to the high density of people in waiting rooms, a significant amount of dust, odors, and carbon dioxide can be emitted, along with various microorganisms. Add to this poor ventilation and other biological pollutants that can survive and spread in specific environments for a long time. If the total PM10 and PM2.5 levels are excessive,
To compensate for the insufficient fresh air in the air conditioning system, some waiting rooms are now employing large industrial ceiling fans to address this issue. With the use of these large industrial ceiling fans, the massive blades propel a vast amount of air, invigorating the air within the waiting room. The air exchange rate can reach 60-120 times per hour, improving the stale air inside and creating a fresh, comfortable waiting environment. Additionally, by slightly increasing the air conditioning temperature by 1-2°C, significant electricity savings can be achieved without compromising the pleasant waiting atmosphere.
The waiting room has gained popularity with passengers after installing a large industrial ceiling fan, thus attracting the attention of railway operators regarding its price. Generally, the cost is influenced by factors such as the overall material and installation services.
The motor of our King Ventilation series large industrial ceiling fans is divided into reduction motors and permanent magnet synchronous motors. The permanent magnet synchronous motor features maintenance-free operation, eliminating the need for regular maintenance and saving on subsequent maintenance costs. Additionally, the one-piece hub is made from 7075 aerospace-grade aluminum, processed on a CNC lathe and through CNC precision machining techniques. This ensures not only high-quality hubs but also high precision, with each part's accuracy controlled within a tolerance of 100μm. It also resolves the material strength issues at the mating points with the motor shaft.
Each hub, after being processed and shaped, undergoes precise dynamic balancing tests to ensure the large fan rotor has excellent balance performance, while also enhancing the fan's safety.
Large industrial ceiling fans feature blades made of 5052 aviation-grade aluminum, capable of withstanding over 3 tons of tensile force, and will not break upon accidental impact. Designed according to aerodynamic principles, they have low wind resistance, convert electrical energy into kinetic energy completely, and ensure more even air volume with no hollows in the center.
Safety is paramount in production, and the alarm must be sounded at all times. The Da Wang Ventilation series of large industrial ceiling fans ensures overall fan safety by employing a full mortise and tenon structure. In addition to the normal reinforced connections between the motor and base, the base and blade shaft, and the blade and blade shaft, a mortise and tenon structure is also designed for dual insurance.
Choosing the right large industrial ceiling fan directly determines its later performance and safety. Only when it has good performance, no accidents, low maintenance costs, and a long lifespan can it be used comfortably, safely, and conveniently.

An unexpected event has impacted the global economy, leaving many facing unemployment. Consequently, the concept of "street economy" was brought up again, causing a stir and rapidly spreading like wildfire.
How to quickly set up a small stall? It has become a hot topic among netizens.
No stock? Look to Alibaba, JD.com. What to import? Find Alibaba. How to store goods? Look to Suning. No capital? Turn to Alibaba, JD.com, Suning, Meituan, Pinduoduo. No customers? Seek Meituan, Tencent. How to boost street stall profits in summer? Find industrial fans.
Summer's hot, and many prefer dining outdoors as the outdoor environment is more comfortable than indoor. With occasional gentle breezes, it's quite pleasant. So how can you keep the breeze going? The "Smart Vertical Industrial Fan" developed by the Da Wang Ventilation Technology Team can do just that.
Vertical industrial fans, after numerous designs, optimizations, and experiments, have finally hit the market. They feature a diameter of 2.5-4.9m and a wind speed of 1-3m/s, resembling natural wind frequencies. One unit can cover a radius of up to 18 meters while consuming only 1.5kw/h of power. They occupy minimal space, meeting outdoor ventilation and cooling needs, and can also accommodate billboards, lighting, fencing, and seating on the fan pole.
The aerodynamic principles and streamlined variable cross-section blade technology enable the function of propelling a large volume of air to the ground, forming a horizontal air current layer at a certain height above the ground, thereby promoting overall air circulation. The wing-shaped blades rotate slowly in the air, creating a continuous and silent breeze that glides over the skin, producing a cool, alleyway-like sensation.
Opportunities in the street economy are fleeting; what are you waiting for? Let's work hard together to achieve a prosperous life!

Industrial fans are primarily used for ventilation and cooling in workshops, warehouses, and logistics, and are categorized into industrial ceiling fans, industrial cowhorn fans, and industrial floor-standing fans.
Industrial large fans are designed using aerodynamic principles, with streamlined blades crafted for efficient operation at lower power levels, driving air flow over large areas. The specifications vary, as do the power ratings. Generally, larger diameters equate to higher power and larger coverage areas. For instance, a 7.3-meter diameter industrial large fan typically has a power rating of 1.5 kW/H, with a single unit covering an area of up to 1900 square meters. A 3.6-meter diameter industrial large fan usually has a power rating of 1.1 kW/H, covering an area of 380 square meters per unit.
Standard industrial fan sizes are currently 7.3m, 6.1m, 4.9m, 3.6m, 3.1m, and 2.5m. Users can make a reasonable selection based on the actual workshop area, dimensions, personnel positions, and workshop environment.
The main component of industrial horn fans is an AC motor, where the energized coil rotates under the influence of the magnetic field. The diameter ranges from 560mm to 780mm, with corresponding power ratings from 180W to 280W.
Industrial pedestal fans mainly consist of motors, with specifications ranging from 10 inches to 20 inches and corresponding power ranging from 80W to 150W.
Industrial large fans effectively cool and ventilate the entire workshop, with their continuous three-dimensional circulation system reaching every corner. The coverage area of a single industrial large fan is equivalent to that of dozens of industrial cow horn fans or industrial floor fans.

To address issues such as ventilation and high air conditioning energy consumption in tall buildings due to climate, Desheng Management has been seeking large-scale ventilation equipment. The Da Wang ultra-large fan, with a stable torque of 260 N.m and a full-load air volume of up to 15,072 m³/min, has caught the attention of Desheng Management. The IE4 energy-saving standard, maintenance-free motor that doesn't require oil changes or seals, and the structural design with dovetail connections at critical joints have all been highly recognized by Desheng Management!
The Big King ventilation engineer designed the installation plan based on the layout and height of the basketball court, installing 3 W.FANS series ultra-large fans. The low-speed, high-volume air circulation with zero blind spots eliminated the high temperature and stuffiness inside the basketball gym, balanced the air humidity, increased the oxygen content, and reduced the indoor concentration.
In summer, using oversized fans in conjunction with air conditioning can raise the AC temperature by 2-3°C, reducing overall energy consumption by 30%. This has been highly praised by Desun management!

In recent years, an increasing number of workshops, factories, and warehousing logistics facilities have been utilizing industrial fans for ventilation and cooling, making industrial fans a powerful tool for enhancing recruitment efficiency and reducing the turnover rate among front-line employees.
Safety is paramount during the operation of industrial large fans, as it directly impacts the production safety of the enterprise. Industrial fan safety encompasses the product's inherent safety features and maintenance during usage.
Safety features include the connection methods of all components, shock-absorbing cushions, wire rope protection, blade material, and abnormal alarm systems. The safest connection method for the industrial large fan components is the mortise and tenon joint, and the safest blade material is the aviation-grade aluminum plate. Integrated hub units are safer.
When installing industrial ceiling fans, it is imperative to strictly adhere to the relevant regulations, especially in flammable and explosive areas. Unauthorized operation that generates static electricity or sparks can cause explosions or fires.
Maintenance includes regular inspections, dust cleaning, adding lubricating oil, and checking for fan cracks.
Regular maintenance includes checking electrical wiring, screws, bearings, insulation material's insulating capacity, motor grounding devices, etc. Dust can reduce insulating capacity, so it's crucial to frequently clean the dust and mud on the motor base. Traditional减速 motors require lubricating oil, so it's recommended to clean or replace the oil every 3-6 months. Cracks can diminish the fan's risk resistance, so it's necessary to inspect them before use or on a regular basis.
If the motor head of the industrial large fan vibrates during use, the power must be turned off immediately and the inspection conducted promptly. If there are abnormalities in the speed, power, air volume, or noise, a timely inspection is also required to prevent the increase of the risk factor.

Recently, a short video titled "Xixian Flood Disaster: 3,000 Tons of Tea Damaged, Losses Reach 90 Million Yuan, Manager in Tears" has garnered widespread attention online. The manager, in an effort to help tea farmers get through the tough times, bought more tea than usual. However, the heavy rain flooded the tea company's warehouse, resulting in significant losses, and now even the wages for the tea farmers cannot be paid.
Actually, disasters are never far away. Faced with heavy rain, how can tea companies take preemptive measures to preserve their tea?
Water is a necessary medium for the reaction of various biochemical components in tea leaves, and it is also the main factor for mold growth and a necessary condition for microbial proliferation. Generally, the higher the moisture content of the tea, the faster it ages. When the moisture content exceeds 6.5%, it will produce polluted air after 6 months. When the moisture content exceeds 7%, the taste will gradually deteriorate. Mold can easily develop within a short time when the moisture content reaches 8.8%. When the moisture content exceeds 12%, mold will thrive and produce a musty smell. Therefore, for high-quality tea with good price, the moisture content should be between 4% and 5%, followed by 6%, not exceeding 7%.
Without refrigeration, a large quantity of famous teas, such as Longjing from West Lake and Maofeng from Huangshan, are temporarily stored after purchase for non-use to prevent quality deterioration. To do so, lime block preservation or industrial ceiling fans for dehumidification are commonly used. Lime block preservation takes advantage of the absorbent properties of lime blocks to keep the tea fully dry. The dehumidification method using industrial ceiling fans utilizes their dehumidifying characteristics to maintain a well-ventilated storage environment, accelerating the evaporation of moisture in the air to keep the tea dry.
Although natural disasters are unpredictable, as businesses, tea companies should continuously enhance their risk resistance, such as by purchasing insurance and developing a composite business model, as better-prepared companies are more likely to survive in such disasters.

Rucker Park is a name that's familiar to every basketball enthusiast. As a world-renowned basketball court, it originated in New York, USA, gaining widespread recognition for its cool street style and the impressive skills of players who frequented it, including many who later joined the NBA. With the street basketball culture wave sweeping across China, Mr. Tai Fuqi, the founder of China's Rucker Park, brought the sacred street basketball venue to life in China in 2006.
Lock Park, located at the core of Shanghai Pudong's World Expo Axis, boasts a gymnasium equipped not only with the main sports area but also with leisure, retail, and shower/restroom facilities. The main structure is made of high-strength anodized industrial-grade aluminum alloy in black, enhanced with a coating process to prevent fading, giving the venue a sleek and cool appearance.
For years, Lock Park has been using air conditioning to cool the gym during summer, but the soaring electricity bills have become a source of operational concern. Additionally, with limited natural ventilation and a high concentration of people, along with intense physical activity, the air inside the gym becomes very polluted, which is not conducive to the health of the occupants.
Shanghai Lock Park features an arched-roof basketball gym, 38 meters wide, 70 meters long, with 8-meter-high sides, housing 4 standard basketball courts. To ensure air circulation and cooling within the facility, two 8-meter-diameter King Ventilation safety fans were installed on the roof. To minimize disruption to the gym's operations, the management opted for night-time construction. To protect the gym's floor, engineers from King Ventilation laid panels on the ground before installation and used cranes for quick assembly. In one night, both fans were successfully installed.


Industrial ceiling fans have brought a breeze of coolness to factory workshops and warehousing logistics. Now, they are also used in tall spaces such as waiting rooms in bus stations and indoor basketball gyms. There is a variety of large fans on the market with similar external shapes but different internal structures. In fact, there's a lot of thought that goes into this.
Industrial large fans with a decelerating motor, upon sudden power failure or outage, the decelerator will lock directly, yet the fan continues to operate. This causes the blade and shaft to generate a shearing force that continuously cuts the bolts. Over time, the bolts subjected to the cutting will loosen, leading to the potential for blade detachment or fall from industrial large fans secured only by bolts, which is extremely dangerous. However, by incorporating a mortise and tenon structure in addition to bolt fastening, the tenon will automatically lock, preventing the blade from falling off.
Industrial large fans using permanent magnet synchronous motors will not experience the aforementioned issues during sudden power outages or power failures. Internally, they will slowly rotate until stopping, avoiding sudden cutting forces on the bolts from the fan blades and stems, and posing no risk of blade detachment.
Reduced-speed motors and permanent magnet synchronous motors are the two most commonly used types of motors in the industrial large fan market. The lifespan of reduced-speed motors is typically 1-3 years, while the lifespan of the DAWANG Ventilation series permanent magnet synchronous motors is usually over 10 years. Reduced-speed motors contain gears internally, which create frictional losses, thus leading to a shorter lifespan. In contrast, the DAWANG Ventilation series permanent magnet synchronous motors do not have components like reducers or gears that cause frictional losses, resulting in a longer lifespan.
Friction also consumes power, which is why the energy efficiency of a decelerating motor is only about 78%, classified as energy-efficient. However, the King Ventilation series of permanent magnet synchronous motors can achieve an energy efficiency of over 95%, enabling a 30% increase in energy savings.
Safety and energy consumption are the two major factors considered by industrial fan users, which also determine the price range. Only products that are both reassuring and energy-efficient can adapt to the overall market trend and meet users' needs.

The Wuhan Metro Line 5, located on the south bank of the Yangtze River in Wuhan, runs north-south through the entire Wuchang District, serving as a key passenger transport corridor to the Shunjiang direction. It spans 32.3 kilometers, with 25 stations along the route. Starting at the South Third Ring Station and ending at Wuhan Station, it includes 4 elevated stations and 21 underground stations. The operating speed reaches up to 80 kilometers per hour, utilizing driverless trains.
Wuhan is located in the eastern part of the Jianghan Plain, where the Yangtze River and Han River converge in the middle reaches. It experiences a subtropical humid monsoon climate. July marks the peak of summer, with temperatures usually ranging from 37-39°C, often accompanied by high humidity, making it feel stifling and uncomfortable.
To enhance passenger comfort, the vehicle employs lateral air ventilation to avoid direct airflow to the passengers' heads. The vehicle is also equipped with an air purification system to ensure the air quality. To improve the working environment for maintenance staff, this subway line utilizes oversized fans for ventilation and cooling.
The subway maintenance section is approximately 200 meters long and 15 meters high, featuring an I-beam roof structure. Standard fans and cow horn fans are unable to meet the ventilation and cooling needs during operation. The advantage of the oversized fans lies in their ability to ventilate and cool large, high spaces. The 7.3-meter diameter oversized blades can generate a large amount of naturally-simulated air circulation, allowing sweat to evaporate quickly, achieving a cooling effect of 5-8℃. Therefore, the Wuhan Subway Group has chosen oversized fans for ventilation and cooling.
In comparing numerous large fan manufacturers, Wuhan Metro Group places greater emphasis on the safety performance of large fans. Having learned that mortise and tenon joints are safer in large fans than rigid bolt connections, they can eliminate the centrifugal and shearing forces during the fan's operation. Therefore, Wuhan Metro Group has chosen the Da Wang Ventilation Large Fan with independent intellectual property rights to enhance safety in work.
The King Ventilation Engineering Department staff conducted a site survey upon receiving the task, measured the layout and optimal ground distance for the oversized fans, achieving full air volume coverage across the site. Engineers swiftly transported each oversized fan into the work area, and the articulated arms lifted personnel and components of the oversized fans into the air in a tense yet orderly manner until they reached the installation points. With the completion of the installation of 36 oversized fans in two batches for the Wuhan Metro Line 5, the construction phase of the Zhangjiawan Main Transformer Cable Channel Trenching Project has officially commenced.




Porsche (China) Auto Sales Co., Ltd. is a subsidiary of Porsche in mainland China, as well as in Hong Kong and Macau. Porsche China was established in 2001 and has been providing support to partners in sales, marketing, and after-sales services since then.
Porsche (China) Automobile Sales Co., Ltd. was established in 2008, with a parts distribution center located in Qingpu, Shanghai, covering an area of 800 square meters. To better meet customer expectations and improve parts delivery efficiency, Porsche's parts distribution center in Shanghai was expanded to 38,000 square meters in 2020. On November 18, 2020, the Porsche parts distribution center in Dongguan officially opened, occupying an area of 12,500 square meters. The transportation efficiency for complete vehicle shipments and LTL (Less Than Truckload) shipments of Porsche parts will be increased by 60% and 40% respectively. They provide exceptional service that meets customer satisfaction, adhering to Porsche's global unified standards, for both customers and their beloved Porsche vehicles.
Porsche holds not only its own standards but also those of its suppliers. With the arrival of the Da Wang Industrial Large Ceiling Fan at Porsche China's Parts Distribution Center, it is a testament to the recognition of Da Wang's quality!
Da Wang's positioning is "Focus, Safety," which resonates with Porsche's unwavering commitment to "Always Aim Higher." It consistently maintains an attitude of progress. The PMSM permanent magnet synchronous motor, with a stunning 260N.m torque, delivers greater driving force and smoother torque, comparable to Porsche's twin-turbo horizontally opposed 6-cylinder engine. The intelligent mortise and tenon structure, combined with aviation riveted wing-shaped fan blades, integrates the safety, stability, and flexibility of the large fan, akin to Porsche's Stability Management System (PSM). The DAWANGBOX control system for automated equipment control can enhance handling and comfort in any situation, comparable to Porsche's Dynamic Chassis Control (PDCC).
Shanghai is located between 120°52′ and 122°12′ longitude, and 30°40′ and 31°53′ latitude, with a North Subtropical Monsoon climate characterized by distinct seasons, ample sunshine, and sufficient rainfall. Dongguan is situated between 22°39′ and 23°09′ latitude, and 113°31′ and 114°15′ longitude, featuring consistently high temperatures throughout the year and abundant rainfall for most of the time. During the rainy season, warehouses with excessive humidity are prone to mold growth, leading to poor indoor air quality and a decline in stored product quality. Additionally, the significant temperature difference between day and night can cause condensation, making the ground slippery and increasing safety hazards.
The Porsche China Parts Distribution Center has been seeking ventilation equipment that can achieve three-dimensional air circulation in large spaces and remove humidity to address quality issues caused by climate and ensure employee comfort. Among various ventilation options, industrial ceiling fans have stood out for their clear advantages, including cost, lifespan, and air flow rate. Da Wang industrial ceiling fans have distinguished themselves for their safety among numerous options.
The engineer at Da Wang, after conducting on-site surveys of the Porsche China Parts Distribution Center's East China and South China warehouses, developed a plan. Based on the actual length, width, storage locations, and staff work areas of the warehouses, an optimized solution was implemented, including the installation of 16 W.FANS series industrial ceiling fans.
A 7.3-meter diameter industrial fan slowly rotates, its 360-degree three-dimensional circulation increases the air circulation volume, accelerates air flow and moisture evaporation, expelling stale indoor air through doors and windows while drawing in fresh outdoor air.