Bearings for household appliances

      The market demand for household appliances is increasing year by year. Users demand low noise, quiet operation, long life, high quality, energy saving, and friction reduction. RDK provides household appliances solutions and provides comprehensive technical consulting support services. Over the years, we have carefully studied the needs of each industry and applied them to practical solutions, committed to achieving superb products and excellent performance. The commitment to service quality is embodied in every link of the service process. From the research of new solutions to product after-sales service, we always provide a higher level of professional experience, solution quality, and customer service, covering the entire process from design concept to final application.
    RDK household appliances industry, applications, cases, solutions
  Washing machine
  Technology development and updated environmental protection requirements urge agents to strive to improve washing and rinsing efficiency, while reducing power and water consumption. Every country regulates household appliances through regulations. Both the European Union and the United States Federal Agency (FTC) have established energy consumption regulations and implemented labelling programs. All appliances are labeled with energy consumption to help consumers make choices. These regulations have specific requirements for energy efficiency, noise levels and working life.
  In addition to the conventional performance of the washing machine, such as durability and rust-resistant components (the drum and the slinger are made of stainless steel, plastic or other materials), there have been new technological developments more recently:
  Increase the rotation speed (1600 revolutions per minute or higher) to improve the washing effect of clothes
  Equipped with electronic power management system to adjust water consumption according to washing load
  Equipped with an electronic control system that can control the speed, position and rotation of the drum
  Reduce the size of the washing machine and focus on quiet operation to improve the flexibility of indoor installation location selection
  Washing machine agents put forward various design schemes:
  Horizontal axis-front cover washing machine
  Horizontal axis-top-cover washing machine
  Vertical shaft-top cover washing machine
  Dryer
  With further attention to environmental pollution, a tumble dryer with better performance has been developed. The efficiency of the dryer is determined by the "energy factor" coefficient, which measures how many kilograms of clothes can be dried per kilowatt hour of electricity. The principle of operation consists of a rotating drum (50/100 rpm) and a hot air flow above the clothes. The dryer has two ways to provide energy:
  The electric dryer contains heating elements
  Liquefied petroleum gas dryer uses LPG furnace
  Both dryers must meet the requirements of quiet operation and high efficiency, as well as the expectations of durability. The drum is driven by a small motor (usually a single-phase induction motor), and hot air is blown onto the clothes by a blower.
  Complete solution
  Bearings required for small motor shaft, roller support and blower shaft
  dishwasher
  The main indicator to measure the efficiency of dishwashers is how many washing cycles can be completed per kilowatt-hour of electricity. Approximately 80% of the energy consumed by dishwashers is used to heat water. In order to improve efficiency, people strive to find ways to reduce water use. The layout and number of spray arms of the dishwasher need to be designed to ensure that every bowl is washed clean and shiny.
  Dishwashers are usually installed in the kitchen. Therefore, there are strict requirements for noise and vibration. Newly launched dishwashers reflect further improvements in noise levels, with many models keeping noise levels below 45 decibels.
  The matched bearing must meet the following technical conditions:
  High washing efficiency
      long lasting
  Low noise and low vibration
  Some dishwashers use a unique water pump, driven by a single-phase induction motor, to undertake the dual tasks of washing and draining. Some dishwashers are equipped with two different water pumps: one for washing and the other for draining water.
  Ventilation fan
  In many household applications, ventilation fans are mainly used for air circulation. Ventilation fans are divided into two categories:
  Ceiling fan
  The role of ceiling fans is to enhance indoor air circulation. Air circulation helps the body heat to evaporate and enjoy a cool feeling. The vibration level should be as low as possible.
  Other indoor ventilation fans
  This type of fans includes blowers, bathroom exhaust fans, attic exhaust fans, exhaust coils, etc. These applications have relatively low requirements for fans. However, low noise and resistance to environmental influences (anti-humidity) are important requirements.

  Indoor air conditioner
  Indoor air conditioning equipment can be divided into the following two categories:
  Window type and portable air conditioner
  The adjustment process uses two fans (one for cold circulation and the other for heat circulation) to improve the efficiency of the system. These air conditioners are usually placed in the bedroom or living room, so low noise is very important.
  Separate air conditioner
  Used for air conditioning in apartments and houses. The heat cycle (condensing device) is separate from the cold cycle, and the cold cycle is usually placed in the air conditioner in the house. Air conditioning systems are generally placed in basements or special rooms. The requirements for low noise are relatively low here. The condensing device is placed outside the building. Therefore, the device and all its components must be able to withstand the influence of outdoor weather.
  Window air conditioner motors, condenser fans and blower motors are usually single-phase induction motors (separate capacitors or shielded magnets)
  Water heater
  Water heater is a water container that generates steam by transferring fuel energy. The steam is transported to some place to help agent equipment disinfection, provide steam cleaning heat, etc. The energy released by the steam is enough to convert it back into the form of water. When the generated steam is reused, the system is called a closed system. A system that cannot return to condensate is called an open system
  Features
  Energy-saving compressed gas stove
  Preheat water using photovoltaic or geothermal energy
  Photovoltaic powered circulating pump
  External and internal positioning
  Refrigerators and freezers
      Refrigerators and freezers are common household appliances. Refrigerators include an insulated area and a heat pump, which extracts heat from the refrigerator to make the temperature in the refrigerator lower than the ambient temperature of the room; a better temperature range for storing perishable food It is 3 to 5°C.
  The freezer has industrial and commercial uses, and its temperature is maintained at -23 to -18 °C; the domestic freezer can be regarded as an independent area in the refrigerator, or an independent device.
  Food Agent Machine
  Traditional food agent machines used for mixing usually include a base that can support the container containing the agent food, and a drive unit connected to the primary transmission to be able to drive the container.
  The food agent tool with at least one mixer is placed above the base and can be inserted into the food container to allow the mixer to stir the food inside. The mixing device is connected with and driven by the secondary transmission device, and is opposite to the rotation direction of the food container, thereby improving the efficiency of mixing food.
  In order to easily reach into the food container, the traditional food agent machine is designed to move the blender away from the base so that the food container can also be removed or put back from the base without being blocked by the blender.
   Range hood
  A range hood usually includes 3 basic functions:
  Able to inhale the smoke generated during cooking
      Lighting system
  Design.
  Each range hood has an electric motor, which must be able to run at high speed with low noise.
  Floor polishing machine
  With the development of small motors and cleaning tools, floor polishing machines are increasingly used in industry and households. The cleaning part of these application tools contains two to three cleaning brushes or wipe pads, and their functions are:
  Polish/polish hardwood floors or other materials
  Remove stains on the carpet
  Wipe and wax the floor
  The cleaning brush or wiper pad is driven by a universal motor to rotate. These motors can be installed in a machine box or a brush box. The motor power is between 0.5-1.5 KW, and the rotor speed is about 1000 rpm.
  Vacuum cleaner
  Vacuum cleaner agent manufacturers are oriented towards consumer demand and act as agents for products with higher efficiency, smaller size and better value for money. In order to meet these requirements, agent manufacturers must pay attention to the following aspects:
  Improve the vacuum suction effect by increasing the motor power
  Use a higher speed motor (above 50000 rpm)
  Improve air circulation, increase ventilation efficiency, and make equipment more compact
  Reduce noise level
  Seeking ways to reduce power consumption
  Reduce the number of parts and weight, make the machine lighter and more versatile
  Improve the filter system to reduce the worries of dust allergies
  The side effect of increased power is higher temperature (above 110 °C). Therefore, it is necessary to reduce the friction torque as much as possible.