Working principle of food mixer Food mixer is a kind of electric small household appliances. In other words, their function is not to heat, but to agitate. Specifically, they can agitate or mix food ingredients. Obviously, the electric motor is a major component of the food mixer. Of course, gears are indispensable. The gear can convert the rotation of the motor, which in turn causes the agitator to rotate in the opposite direction. The speed controller can change the current delivered to the motor to control the speed of the stirrer. There are two types of food mixers: portable (portable) mixers and stationary (vertical) mixers. The portable mixer is very light and its electric motor is small, so it is suitable for simpler mixing work. The motors and components of the vertical mixer are relatively large and can perform more difficult tasks, such as kneading dough or mixing a large batch of raw materials. How to repair a food mixer The simple repairs of a food mixer include repairing switches, speed controllers, and gears. Maintenance switch: The switch is a simple component, it is easy to stop small appliances. When the mixer cannot run, please check the switch after checking the plug and power cord. The following describes how to detect and replace the switch: Step 1: Remove the cover of the switch gently to expose the back of the switch. Step 2: Check the wiring terminals of the switch to ensure that the wires in the electrical appliance are connected to the switch properly. Step 3: Mark the terminal positions of the wires, and then disconnect them. Step 4: Use a continuity detector or a multimeter to determine whether the switch is faulty. If it is, please replace the switch and reconnect the wire. Repair speed controller: The speed of the food mixer is controlled by changing the current delivered to the motor. Smaller portable mixers use speed switches, which contain many electrical contacts, each of which increases the current delivered to the motor. Larger mixers use variable resistors to control the current. Regardless of the type of speed controller, you can use a continuity detector or a multimeter to check. Sometimes, cleaning the contacts can also help improve performance. But in many cases, the problems caused by the speed controller can only be solved by replacing it. Maintenance gear: The reason why food mixers work well is because their mixers rotate in the opposite direction, so they can effectively mix the ingredients. This opposite rotation is produced by gears. Most food mixers are connected to a worm gear on the motor shaft, and the worm gear drives two or more pinions. The pinion in turn drives the agitator to rotate. Since the gear is a physical component rather than an electrical component, the maintenance method is different. The following describes how to check and lubricate the gears: Step 1: Make sure to unplug the electrical power. Step 2: Remove the upper cover to expose the gears. In most cases, you can check whether the gear causing the problem is damaged, and then lubricate it. Step 3: Check and lubricate the worm gear and driving gear to ensure that no excess lubricant is applied to the motor or any electronic components. Step 4: Before reassembling, remove any loose pieces or fragments in the outer cover. Replace the fuse: If the motor of the food blender does not work, the motor fuse may have been blown. The following describes how to detect and replace the fuse: Step 1: Remove the upper cover to expose the motor. Step 2: Find the fuse and disconnect it from the motor. Step 3: Connect the probes of the continuity detector or multimeter to both ends of the fuse to check whether there is a path. If it does not exist, it means that the fuse has been blown and must be replaced with a fuse with the same rated current. Step 4: Since the function of the fuse is to prevent the motor from being damaged due to excessive current, please check the speed controller and other electronic components in the blender to determine the cause of the fuse blown. Otherwise, once the motor is started, the new insurance will also be blown. Replace the motor: If the design of small appliances is reasonable, then the motor should be the least prone to failure component. Therefore, the motor is often checked at the end of the maintenance process. Unless you have the proper tools, you should replace the motor instead of trying to repair it. In addition, you can also hand over the motor to professional maintenance personnel for repair. Here is how to detect and replace the motor: Step 1: Check the continuity of the motor like any other electronic components. Step 2: If an open circuit is detected, please mark and remove the wire connected to it, and then take the motor out of the housing. Step 3: Make sure that the model and rated power of the new motor are exactly the same as the failed motor to ensure that it can be installed in the housing and perform the same tasks.
Ningbo Hegao Electronic & Technology Co., Ltd., founded in 2013, is an innovative modern manufacturing enterprise specializing in the production of electric hand blenders and other household appliances.