Bronzoni motor Germany Bronzoni model Bronzoni price

Bronzoni motor refers to a motor that can operate on both DC and AC power supplies. This type of electric motor is widely used in household appliances, manual devices, computing tools, and precision machinery. In addition, this type of motor is frequently used in medical equipment, communication technology, measurement technology, the film industry, and many other areas.

Bronzoni motor structure

The structure of the motor should consist of two main parts: the stator and the rotor. The part that remains stationary during the operation of a DC motor is called the stator. The main function of the stator is to generate a magnetic field, consisting of the frame, main poles, commutating poles, end covers, bearings, and brush gear. The rotating part during operation is called the rotor. Its main function is to generate electromagnetic torque and induced electromotive force, serving as the hub for energy conversion in DC motors, so it is also commonly referred to as the armature. It consists of the shaft, armature core, armature winding, commutator, and fan. The function of the main pole is to generate the air gap magnetic field. The main pole consists of two parts: the main pole core and the field winding. The core is generally made by stacking and riveting silicon steel laminations with a thickness of 0.5mm～1.5mm, divided into the pole body and the pole shoe. The part covered by the field winding is called the pole body, and the widened lower part is called the pole shoe. The pole shoe is wider than the pole body, which not only adjusts the distribution of the magnetic field in the air gap but also facilitates the fixing of the field winding. The field winding is wound with insulated copper wire and fitted onto the main pole core. The entire main pole is fixed to the frame with screws. The function of the commutating pole is to improve commutation and reduce commutation sparks that may occur between the brush and the commutator during motor operation. It is generally installed between two adjacent main poles and consists of the commutating pole core and the commutating pole winding. The commutating pole winding is wound with insulated wire and fitted onto the commutating pole core. The number of commutating poles is equal to the number of main poles. The outer shell of the motor stator is called the frame. The frame has two functions: first, it is used to fix the main poles, commutating poles, and end covers, providing support and fixation for the entire motor; second, the frame itself is part of the magnetic circuit, forming the magnetic path between the poles. The part through which magnetic flux passes is called the yoke. To ensure the frame has sufficient mechanical strength and good magnetic conductivity, it is generally made of cast steel or welded from steel plates. The brush gear is used to introduce or extract DC voltage and DC current. The brush gear consists of brushes, brush holders, brush rods, and brush rod seats. The brushes are placed in the brush holders and pressed by springs to ensure good sliding contact between the brushes and the commutator. The brush holders are fixed to the brush rods, which are mounted on a ring-shaped brush rod seat. They must be insulated from each other. The brush rod seat is mounted on the end cover or bearing inner cover. Its circumferential position can be adjusted and fixed after adjustment.

Bronzoni motor starting

The resistance and inductance of the motor armature circuit are small, and the rotating body has a certain mechanical inertia. Therefore, when the motor is connected to the power supply, the armature speed and the corresponding back EMF are very small at the beginning of the start-up phase, resulting in a large starting current. The maximum can reach 15～20 times the rated current. This current will cause disturbances to the power grid, mechanical shock to the unit, and sparking at the commutator. Therefore, direct switching starting is only suitable for motors with a power not greater than 4 kilowatts (starting current is 6～8 times the rated current). To limit the starting current, a specially designed variable resistor is often connected in series in the armature circuit. The principle wiring is shown in Figure 1. During the starting process, as the speed continues to increase, each segment of the resistor is short-circuited step by step in time, keeping the starting current within a certain allowable value. This starting method is called series resistance starting. It is very simple, the equipment is lightweight, and it is widely used in various small and medium-sized DC motors. However, due to high energy consumption during the starting process, it is not suitable for motors that start frequently or for medium and large DC motors. But for certain special needs, such as urban trams which start frequently, in order to simplify equipment, reduce weight, and facilitate operation and maintenance, the series resistance starting method is usually adopted. For DC motors with larger capacity, reduced voltage starting is usually adopted. That is, a separate adjustable DC power supply supplies power to the motor armature. Controlling the power supply voltage allows smooth motor starting and speed regulation. This method requires more complex power supply equipment.

Bronzoni motor fault analysis

The oil pressure of the motor fuel system has a direct impact on the mixture concentration, so the fuel pressure should be checked first. The method is: first connect the fuel pressure gauge to the fuel line, then start the engine and measure the fuel pressure. If the fuel pressure is too high, the pressure regulator should be replaced; if the pressure is too low, pinch the return hose. If the fuel pressure rises to the normal value, it indicates that the fuel pressure regulator is damaged; otherwise, check the fuel pump and fuel filter. After shutdown, check that the fuel pressure remains at the specified value 5min; otherwise, it indicates leakage in the injectors, leading to an overly rich mixture. When starting is difficult, the fuel pump is generally working normally. The problem is mostly due to clogging of the oil pump filter screen, preventing the oil pump from sucking in enough fuel, or poor flow in the fuel filter causing insufficient pressure in the fuel supply system. Some vehicle models are equipped with a cold start injector, which enriches the mixture during cold starts to improve cold start performance. The cold start injector is controlled by the start switch and the thermo-time switch. The injection duration depends on the current in the heating coil of the thermo-time switch and the temperature of the cooling water. Faults in the cold start system mostly manifest as: the cold start injector being blocked by gum, affecting the quality of fuel atomization and leading to difficult cold starts; failure of the cold start injector preventing normal operation; short circuit (contacts normally closed) or open circuit (normally open) of the thermo-time switch. If the contacts are normally closed, the thermo-time switch still controls the cold start injector to inject excessive fuel when the engine is warm, leading to difficult hot starts. If the thermo-time switch is short-circuited, the cold start injector cannot work at all, leading to difficult cold starts.

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