Consider repairing a floor-mounted fan with your own hands, using the example of a typical product from the Krasnodar plant. There is nothing complicated inside, however, it’s not easy to describe the method of rotation speed adjustment right away. The design is average. The relatively heavy case tramples the weightless leg, sensing the slightest push, the product falls. The situation is exacerbated by lying carpets. Four plastic supports, scattered on the corners of the thinnest steel, do not save. The stand is fragile, easily bends, keeps on snot. Therefore, the first recommendation is not to get involved with products that have a mechanical instability, so as not to get infected with a psychic one. Bork products are equipped with fall protection, not only products of the Krasnodar plant. However, the motor does not burn in the event of kurtosis, there is protection. ..
The device of a typical
floor fan On the agenda, do it yourself repair of a floor fan! Start small: the simplest fans have no ground terminal. The device does not have a degree of electrical safety. The device of the floor fan includes a housing made of plastic. Water gets inside - expect a good shake. The floor fan of the specified version cannot be used near water. Starting with a fish tank, ending with a flower vase. It is especially dangerous where young children live. The thing will fall, the child will guess to pour in milk. .. Draw your own conclusions:
- is an unstable design;
- base breaks easily, bends;
- protection against electric shock is missing.
With the fall of the floor fan with a high degree of probability nothing will happen. Dive inside the structure. Let us leave aside the features of the motor and button speed control. Let's talk about the gearbox. Krasnodar floor fan carries one asynchronous capacitor motor. The front side of the shaft through the pin, the nut with the left-hand thread is connected to the blades, the back goes to the gearbox, formed by two gears, one double.
The shaft is threaded, catching, rotating, the teeth of the big wheel. The moment is transferred to the small wheel setting the flywheel in motion. Gear wheel crank mechanism diameter in the arm, so the rotation is inferior to the speed of the original shaft of the induction motor.
- Blades spinning at full engine speed.
- The crank mechanism, thanks to the gearbox, moves more slowly.
Through a cardan drive, the crank is hooked onto the leg, the engine block is mounted on the axle. When the shaft of an induction motor rotates, the blades move smoothly in one or the other direction. However, you can stop the process. At the double gear, the swath is attached to the larger gear with two balls with a spring inserted into the through-hole. If you pull the knob directly connected to the axle, the latch slides up. Lost connection between the gear, the shaft, the rotation stops. The mechanism realizes protection against falling: six grooves are cut through the internal landing hole of the drive gear. Balls fit. The positions are six, the mutual transition is accompanied by a click, the axis rotates relative to the gear, the balls hit the walls, sliding into the grooves.
Clicks are heard, the probability is high - the floor fan has fallen. The drive is jammed, working, snapping, a protective mechanism, saving the motor from burning.
We believe that the mode is unprofitable for the floor fan, do not turn off the device, the thermal fuse of the motor will surely break. The gearbox is attached with three bolts to the engine, cut by a pair of lubrication holes, through which plastic gears can be added. Applies to drive, rotating with the speed of an induction motor.
Headache, how to fix a floor fan and assemble. We see the alignment: the mutual position of the gearbox is incorrect, the legs through the gear, the head of the floor fan will move asymmetrically relative to the frontal plane. May be annoying. Connect the gearbox, check the product by connecting the power supply. Carefully, so as not to shock, try to visually determine the correctness of the assembly.
Floor Fan Motor
Inside the fan there is an asynchronous motor with regulation of the shaft rotation speed by switching the windings. On the gearbox is mounted capacitor. The radio element is not a trigger. We believe that it is not for nothing that the windings are fastened four times in two rows, shifted relative to each other in the eighth part of the revolution. The rotation of the field uses a voltage phase and a shift of 90 degrees. The moment the equipment is useless, one winding of the asynchronous motor of the floor fan will burn, it will be necessary to change the motor. It is not possible for a novice to wind up a complex product by himself.
Speed control is performed by switching the supply voltage to the corresponding wires by switching buttons on the rack. One core goes from the cord from the socket to the engine, and the position of the second is chosen by the operator. Only one of the speeds is pressed simultaneously, which is ensured by mechanical methods of blocking the parallel activation. Krasnodar products are pleased with the presence of the backlight: the upper button provides diode burning. Allows you to avoid a collision in the dark with a floor fan. Indirect evidence: the manufacturer is aware of the instability of the product.
The engine is composed of an isolated silumin rotor-drum, the wiring coils are sealed. The structure remains unknown for obvious reasons, the value of the question is deprived. We believe that the probability of failure of the rotor is relatively small, the anchor receives power to the stator. The structure is usually represented by a squirrel cage. A set of longitudinal conductors arranged in a circle, connected by two rings from the ends. At both ends, there is an impeller on the rotor, which blows the stator coils. Allows the asynchronous motor to work more intensively. Krasnodar floor fan has plastic impellers.
In case of ambiguity, ring the wiring from the button( without disassembling the fan), exploring the secretive fault. The resistance of the working winding is not zero, too high. Clipping is not difficult to guess. Start winding ringing from the contacts of the capacitor. The direction of rotation is determined by the mutual position of the starting and main windings, therefore, having mixed up in some places, you will get the wrong result.
Of course, if at least one winding fails, the engine will not work. One phase is not enough to disperse the rotor. Rotate, following the clockwise, the blades( holding the hand back) to understand the presence of a characteristic fault. Floor fan will work - burned one winding. It is wrong to talk about the starting coil, working coils, copper hanks are identical. Motor condenser.
The method of regulating the speed of the motor of an
floor fan. Nothing is said about the method of speed regulation, no wonder. In the considered model, four wires come to the coils, one supplies a plug. Three others enter the winding through fabric cambric. What is inside is unknown. The choice is small; an asynchronous motor with an isolated rotor is controlled in two ways:
- Voltage amplitude change.
- Switching windings with unequal number of turns.
Inverter control is not taken into account, in this case there is simply no place to fit such a complex circuit. Regulation of the amplitude of the voltage remains. On each of the wires there is a different number of turns. One speed( two) will be out of order, Kembrik will have to be cut, therefore, the electric circuit of the engine will become obvious. The assiduous master will wind up a new coil, the lazy will take money from the client to buy a new engine( the old one will allow it to be colored).
Indirectly, the number of turns is recognized through the resistance ratios between the leads of each speed. The tester uses a constant voltage to measure the magnitude, so the inductive part of the impedance is thrown out of consideration. The number of turns is directly proportional to the ohmic resistance of the winding section.
How to disassemble a floor fan
From what has been said it is clear: there is nothing to break inside the floor fan. This is a motor and a capacitor. The rest falls on the mechanical part, the gearbox. In the presence of whistles and noise, try to grease the gears. How to do this, it is clear from the above. In the case of the gearbox a couple of holes for this purpose. Solid oil will fit for plastic parts.
Self-repair of the floor fan should not cause great difficulties. Replace the engine with a suitable size and weight. The main types of damage relate to the mechanical part, the restoration is carried out by conventional( plastic welding of polyethylene) methods with skilled hands.
