Cooling fan of explosion-proof variable frequency motor
A frequency conversion motor, cooling fan technology, applied in cooling/ventilation devices, electrical components, electromechanical devices, etc., can solve the problems of less selectivity, hidden dangers of power supply system, inconvenience, etc., to achieve reasonable structure, ensure stability, and facilitate manufacturing. Effect
Inactive Publication Date: 2015-11-04
WUXI ZHONGDA MOTORS
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Problems solved by technology
[0002] At present, the cooling fan of the explosion-proof variable frequency speed regulating motor is usually outsourced by the motor company to the fan accessory manufacturer that has obtained relevant certificates. The motor voltage inside the fan is inconsistent with the voltage of the variable frequency motor. In this way, when the variable frequency motor is running, two sets of voltages with different voltage levels must be used for power supply, which brings hidden dangers to the power supply system.
Furthermore, since the motor in the cooling fan is an explosion-proof motor, it must obtain the relevant national qualification certificate before it can be put into use, and there are not many manufacturers that have obtained the qualification certificate, which will cause troubles for the motor manufacturers to not supply timely. And there are few choices, which is extremely inconvenient
Method used
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[0009] The present invention will be further described below in conjunction with specific drawings.
[0010] Such as figure 1 As shown: the explosion-proof variable-frequency motor cooling fan includes wind cover 1, blade 2, bushing 5, pressure plate 6, explosion-proof motor 7 and so on.
[0011] Among them, there are continuous small holes and large holes in the center of the shaft sleeve 5, and there are steps between the small holes and the large holes. The small holes of the shaft sleeve 5 are tightly sleeved on the shaft of the flameproof motor 7 and pressed on the steps with the pressure plate 6. Then use the first bolt 3-1 and the first washer 4-1 to fasten the shaft of the pressure plate 6 and the flameproof motor 7, so that the shaft sleeve 5 and the motor shaft are firmly connected; the blade 2 is connected by the second bolt 3-2, The washer 4-2 is fastened on the edge of the shaft sleeve 5, and the flameproof motor 7 is positioned and installed on the windshield 1 ...
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The invention relates to a cooling fan of an explosion-proof variable frequency motor. The cooling fan comprises a fan cover, blades, a shaft sleeve, a pressing plate, and an explosion-proof motor. A small hole and a large hole are formed in the center of the shaft sleeve, wherein the holes are connected; and a step is formed between the small hole and the large hole. After the small hole of the shaft sleeve sleeves a shaft of the explosion-proof motor, the pressing plate presses the step and then the pressing plate and the shaft of the explosion-proof motor are fastened by a first bolt and a first gasket. The blades are installed on the shaft sleeve; and the explosion-proof motor is localized and installed on the fan cover by a seam allowance. According to the invention, the structure is reasonable; the manufacturing of the cooling fan is convenient; and the manufacturer can complete manufacturing of the cooling fan by itself. The cooling fan serving as one of an explosion-proof variable frequency motor employs a power supply voltage identical with that of the explosion-proof variable frequency motor, thereby eliminating the hidden trouble caused by diversity of the power supply voltages and guaranteeing the motor running stability.
Description
technical field [0001] The invention relates to an explosion-proof variable-frequency motor cooling fan, which is a fan accessory for the flame-proof variable-frequency speed-regulating motor. Background technique [0002] At present, the cooling fan of the explosion-proof variable frequency speed regulating motor is usually outsourced by the motor company to the fan accessory manufacturer that has obtained relevant certificates. The motor voltage inside the fan is inconsistent with the voltage of the variable frequency motor. As a result, when the variable frequency motor is running, two sets of voltages with different voltage levels must be used for power supply, which brings hidden dangers to the power supply system. Furthermore, since the motor in the cooling fan is an explosion-proof motor, it must obtain the relevant national qualification certificate before it can be put into use, and there are not many manufacturers that have obtained the qualification certificate, w...
Claims
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Login to View More IPC IPC(8): H02K9/06
CPCH02K5/136
Inventor 陈正方
Owner WUXI ZHONGDA MOTORS