Industry News
The influence of air duct design of warm air blower on hot air circulation and indoor temperature uniformity
- ReleaseTime: 2025-02-13
In the cold season, the warm air blower becomes a powerful assistant for many people to resist the extreme cold. As a key component of a warm air heater, the design of the air duct has a crucial impact on the circulation of hot air and the uniformity of indoor temperature, directly affecting the user's heating experience.
1、 Air duct design and hot air circulation
The air duct is the channel through which the warm air fan transfers hot air, and its design rationality determines whether the hot air can circulate efficiently indoors. From the shape of the air duct, the common types are straight and volute. The linear air duct structure is relatively simple, with low resistance when air flows in it, which can smoothly send out hot air and facilitate the rapid transfer of heat to distant areas. It is suitable for places with open spaces and high requirements for the distance of hot air transportation. For example, in some large warehouses, the use of linear air ducts for warm air fans can quickly reach every corner, causing the entire space to quickly heat up.
The snail shell type air duct, with its unique spiral shape, can better guide and constrain the airflow generated by the wind turbine. It can make the airflow more concentrated and blow out from the air outlet, increase the speed and pressure of the airflow, and enhance the diffusion ability of hot air. In household use, the volute shaped air duct heater can evenly distribute hot air in the room, allowing all areas to receive warmth more quickly.
The cross-sectional area of the air duct cannot be ignored. A larger cross-sectional area allows more air to pass through, increasing the amount of hot air transported and making indoor hot air circulation faster. In a large room, a warm air blower equipped with a large cross-sectional air duct can better meet the demand for hot air circulation and avoid the situation of insufficient temperature in local areas. A smaller cross-sectional area will limit the air flow, which may lead to poor circulation of hot air and affect the heating effect.
2、 Air duct design and indoor temperature uniformity
Reasonable air duct design plays a key role in achieving indoor temperature uniformity. The position and direction of the air outlet are important factors affecting temperature uniformity. If the position of the air outlet is too high, the hot air may rise directly to the ceiling, making it difficult to fully mix with the cold air below, resulting in a lower temperature in the lower part of the room. On the contrary, if the position of the air outlet is too low, hot air may concentrate at the bottom and cannot effectively spread throughout the entire space. Therefore, it is very important to set the air outlet at a suitable height so that the hot air can be evenly distributed indoors.
The direction of the air outlet of some warm air blowers can be adjusted, and users can adjust the direction of the air outlet according to their actual needs, guiding hot air to flow towards the area that needs to be heated. For example, in areas with personnel activities, facing the air outlet towards that area can make people feel warmth faster; Aim the air outlet near windows or other places where heat is easily dissipated to replenish the lost heat and improve temperature uniformity.
In addition, the air guide structure inside the duct also has an impact on temperature uniformity. By setting up reasonable structures such as air deflectors and baffles, hot air can be diverted and guided, making it more evenly spread indoors. Some warm air fans adopt a multi duct design, dividing the hot air into multiple tributaries and blowing them out from different directions, further improving the uniformity of indoor temperature.
3、 Case analysis
Taking a high-end heater on the market as an example, it adopts a unique dual duct design. A duct is responsible for blowing hot air upwards, utilizing the principle of hot air rising to form a hot air layer near the ceiling, and then gradually spreading downwards; The other air duct blows out the hot air horizontally and mixes it thoroughly with the cold air inside the room. This dual duct design effectively improves the circulation efficiency of hot air and the uniformity of indoor temperature. In practical use, this heater can quickly raise the temperature of the entire room in a short period of time, and the temperature difference between different areas is small. Users can feel comfortable warmth in different positions of the room.
For example, a small warm air blower optimizes the design of the guide vanes in the air duct, making the flow of hot air in the duct smoother and reducing the turbulence and resistance of the airflow. The air outlet adopts a special diffusion structure, which enables hot air to evenly diffuse into the surrounding space at a large angle. After actual testing, the heater can achieve uniform indoor temperature in a short period of time when used in a small room, providing a good user experience.
4、 Summary and Prospect
The air duct design of a warm air blower plays an important role in the circulation of hot air and the uniformity of indoor temperature. Reasonable air duct shape, cross-sectional area, air outlet position and direction, and air guide structure can effectively improve the heating effect of the heater and create a warm and comfortable environment for users. With the continuous advancement of technology, the air duct design of future warm air blowers is expected to be more intelligent and personalized. According to different usage scenarios and user needs, the air duct parameters will be automatically adjusted to further improve the efficiency of hot air circulation and indoor temperature uniformity, bringing users a better heating experience.
