As an indispensable confidentiality device in modern office scenes, the performance of the motor, the core power source of the shredder, directly determines the efficiency, durability and applicable scenarios of the machine. This article introduces in detail the common motor types, working principles and their respective advantages and disadvantages in shredders to help us better choose products that meet our needs.
1. Classification and characteristics of shredder motors
1. DC motor
Working principle: The DC motor transmits current to the rotor coil through brushes and commutators, generating a magnetic field that interacts with the stator poles to drive the motor to rotate.
Application scenarios: Commonly used in household or small shredders, suitable for intermittent use.
Advantages:
Simple structure and low cost;
Large starting torque, can quickly process a small amount of paper;
Easy speed regulation, suitable for low power demand scenarios.
Disadvantages:
Brushes are easy to wear and require regular maintenance;
Long-term high-load operation is prone to overheating and has a short lifespan;
Low energy efficiency and high noise.
2. AC Induction Motor
Working Principle: The rotating magnetic field is generated in the stator coil by alternating current, and the rotor is driven to rotate with the magnetic field.
Application Scenario: Mostly used in commercial or industrial shredders, which can continuously process a large number of documents.
Advantages:
Sturdy structure, brushless design, low maintenance cost;
High temperature resistance, suitable for long-term operation;
Smooth operation and relatively low noise.
Disadvantages:
Low starting torque, clutch or reduction device required;
Large volume, higher cost than DC motor.
3. Universal Motor
Working Principle: Combining the characteristics of DC and AC, the stator and rotor coils are connected in series and driven by alternating current.
Application Scenario: Mid-to-high-end shredders, taking into account both home and commercial needs.
Advantages:
High speed (up to 20,000 RPM or more), high shredding efficiency;
Small size, suitable for compact design;
Support speed regulation function, adapt to different paper thicknesses.
Disadvantages:
Brushes and commutators are easy to wear and need to be replaced regularly;
High speed brings loud noise.
4. Brushless DC Motor (BLDC Motor)
Working principle: Use electronic controller to replace traditional brushes, and accurately control the direction of current through Hall sensor.
Application scenario: high-end paper shredder, pursuing quiet and long-life office environment.
Advantages:
No brush friction, significantly extended life;
High energy efficiency, low heat generation;
Quiet operation, suitable for quiet scenes such as libraries.
Disadvantages:
High cost;
Depends on complex control circuits, difficult to repair
