[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - fan] fan noise detection and fan vibration detection: vibration when the fan started to work a small bearing parts, but with longer, dust inside the fan operating time unevenly attached to the impeller, the gradual destruction of the fan balancing, bearing vibration gradually increased, once the vibration reaches the maximum allowed fan 11mm / s (with an amplitude value represents the maximum allowable value below), the fan must be stopped Repair (remove dust accumulation, redo balancing). Because this time is very dangerous boiler fan, you must not use force. When approaching the danger value blower fan vibration, there will be vibration meter alarm. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - axial fans] energy works when the impeller rotates, the axial gas from the inlet into the impeller, the impeller blades push by leaving the gas lift high, then flows into the vanes. Vanes will deflect airflow into the axial flow suction fan, while gas is introduced into the diffuser tube, and further the gas pressure is converted to kinetic energy, and finally introduced into the service line. Work axial fan blades similar to airplane wings. However, the role of which is to lift up on the wing and supports the weight of the aircraft turbine manufacturers, while the fixed-position axial fans and air movement. Cross-sectional axial fan is generally airfoil. Blades may be fixed position, and to be rotating about its longitudinal axis. Blades and the blade pitch angle or the air flow may be adjustable or not adjustable. Changing the blade angle or pitch is one of the main advantages of axial fan. Small blade pitch angles produce lower flow rate, while increasing the spacing may produce a higher flow rate. Advanced axial fan capable of changing the blade pitch (which is quite similar to a helicopter rotor) when the fan is running, thereby correspondingly varying the flow rate. This is called variable pitch (VP) axial fans. _ Tianjin Jinzhong Ji integrity suction fan for 15 years (certified) provided by the Tianjin Jinzhong Ji _ Fans HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base.