Frequency conversion pump adopts AC frequency conversion speed regulation technology. The actual output power of AC appliances is related to the frequency of the power supply: the lower the frequency, the smaller the actual output power.
Our daily use of water is irregular, that is, the amount of water used is large and small. In this state, if the use of power frequency control of the pump, no matter how much water you use, it should be rated power output. But if the use of frequency conversion pump is very different, when you are small water consumption, the speed of pipeline pressure relief is slow, at this time the processor according to the feedback of the signal through comparison calculation and then give the frequency converter a working frequency signal, at this time the frequency converter is working at this frequency. When the water consumption changes, it works at other frequencies by quick calculation (the frequency increases or decreases according to the water consumption, the greater the water consumption, the higher the frequency), and so on.
To sum up, whether the frequency conversion pump saves energy should be changed according to your actual water use. If you open the water to the maximum each time, the effect is not obvious. If each time the water consumption is relatively small, the effect is very obvious, energy saving up to 50% or more. The working principle of the frequency converter is to reduce the frequency of the motor power supply, thus reducing the speed of the water pump and providing the low-power working mode that meets the demand, if there is no need for the low-power mode working condition. Frequency conversion pump is not necessary to use small power, then frequency conversion pump can not achieve energy saving effect. Similarly, if the frequency of the pump motor is forced to be treated, the frequency of the pump motor can only play a energy-saving effect, which cannot meet the working conditions. What is the role of energy saving? Take a simple example: for example, frequency conversion air conditioning in our daily life, if the temperature control is lowered, it can save electricity, but if the set temperature and gear can not meet the needs of heating, although the energy saving, but did not reach the working condition point, that is to say, the motor frequency conversion energy saving is possible, but to consider whether it can meet the working condition point requirements under low power.
More often, the purpose of using variable frequency pumps is not mainly energy saving. The main function is constant pressure water supply, using variable frequency water pump to boost the pressure of the pipeline, no matter when the pipeline water pressure is relatively constant.
1. The motor of the frequency conversion pump is the frequency conversion motor, and the motor of the ordinary pump is the ordinary motor. The design of the frequency converter motor considers the heat dissipation problem when the motor runs at low speed, adopts an independent strong fan, and also makes corresponding processing to resist the high harmonics generated by the frequency converter. Variable frequency pump is by changing the frequency to control the speed to achieve the required water flow.
2, the difference between the appearance of frequency conversion motor and ordinary motor: there is no difference between the motor, that is, the frequency converter is added in front of the motor for control, the frequency conversion cooling fan motor is independent, specially designed to prevent the electric long time low frequency operation resulting in insufficient heat dissipation. In terms of design, the cooling fan of the general motor is integrated with the rotor of the motor, which is the biggest difference in appearance.
A pump is a machine that moves or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. Mainly used for conveying water, oil, acid and alkali, emulsion, suspension emulsion, liquid metal and other liquids. It can also transport liquids, gas mixtures and liquids containing suspended solids. The technical parameters of pump performance include flow, suction, head, shaft power, water power, efficiency, etc. According to different working principles, it can be divided into positive displacement pump, vane pump and other types. Positive displacement pumps use changes in studio volume to transfer energy; Vane pumps use the interaction of rotating vane blades with water
