First, the price of tunnel fans,
Mine flameproof pressure-in axial-flow local ventilator, axial-flow local ventilator, local ventilator? Price: 6500.00 yuan
Supply all kinds of luxury, ordinary and cabinet ventilators? Price: 5000.00 yuan
Supply 880 type unpowered ventilation cap? Roof natural ventilator? Price: 380.00.
XBDZ wall axial fan? DFBZ square wall axial fan? Low noise axial flow fan manufacturer? Price: 320.00
Direct selling 4-72 centrifugal fan? Blower? Civil ventilator? Price: 180.00
Special ventilator for tunnel furnace, centrifugal fan (figure), high temperature centrifugal fan? Price: 1660.00
Shangyu fan? Axial flow fan in SDF tunnel? Price: 790.00
SDF/NO8.0-2*55KW axial fan tunnel axial fan tunnel axial fan? Price: 39,000.00 yuan
Second, the working principle of tunnel fan
When the tunnel fan is running, part of the air in the tunnel is inhaled from one end of the fan, accelerated by the impeller, and then ejected at high speed from the other end of the fan. This part of high-speed airflow with high kinetic energy transfers energy to other gases in the tunnel, resulting in pressure rise to overcome tunnel resistance, thus pushing the air in the tunnel to flow in the direction of downwind jet airflow. When the flow rate decays to a certain extent, the next set of fans will continue to work. In this way, the purpose of inhaling fresh air from one end of the tunnel and discharging dirty air from the other end is realized.
In addition, according to the different ventilation forms, tunnel fans (jet fans) are divided into unidirectional tunnel fans (jet fans) and bidirectional reversible tunnel fans (jet fans). One-way jet fan, generally used for one-way ventilation; Under special circumstances, the reverse rotation of the fan can provide 50% ~ 80% forward thrust. Bidirectional reversible jet fan can be used as bidirectional ventilation, which is convenient for users to control the airflow direction. When the fan moves forward and backward, the thrust is basically equal.
There are many brands and models of tunnel fans, so the price of tunnel fans is different, some are cheap and some are expensive, and the price fluctuation is not big. We can buy corresponding tunnel fans according to our own needs when purchasing. You can refer to the price given above. So much for the introduction of tunnel fans. If you want to know more, you can go to the physical store for consultation.