Noise control technology of dishwasher

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Late at night, the kitchen dishwasher is working methodically, gurgling water, but can not hear the past that the roar of noise. It is like an elegant gentleman, in the quiet to complete the cleaning mission, so that the home is still immersed in a quiet atmosphere. The loud noise of a dishwasher, often denounced as a tractor in the kitchen, has been transformed into a silent guardian of family peace. What amazing silent black technology is behind this?

1、Motor and pump optimization

Motor and pump can be called the heart and blood vessels of dishwasher, their performance directly affects the noise level of dishwasher.

(1). low noise motor design

When the traditional motor is running, the friction and vibration between the internal structure will produce high-frequency noise, like a discordant note. The appearance of modern variable frequency motor has changed this situation. It can be intelligently adjusted according to the needs of washing speed, the original harsh high-frequency noise into a soft low-frequency hum.

(2).optimization of water pump

Pump optimization is also critical. Engineers have found that the friction between the impeller and the bearing is an important source of noise. So they put shock-absorbing insoles on the pumpsー using a combination of ceramic bearings and silicone seals. Ceramic bearings have high hardness and wear resistance, can effectively reduce friction; silica gel seal ring can play the role of buffer and seal, let the water flow through as smooth as silk slip over the fingertip.

2、Application of sound insulation materials,

(1). internal acoustic layer

Modern dishwasher interior clever use of multi-layer sound insulation material, forming a sound of a“Wall.”. The innermost layer is 3 mm thick polyester sound-absorbing cotton, it is like a huge sponge, can quickly swallow high-frequency noise, so that the sound in the transmission process is greatly reduced. The interlayer is a 5 mm thick damping plate with a unique molecular structure that creates friction as sound propagates, consuming low-frequency vibrations and further reducing noise transmission.

(2).outer insulation design

The outer layer is made of strong galvanized steel, which not only provides protection, but also reflects the residual noise back inside for secondary absorption. This multi-layer sound insulation structure, like a well-designed maze, so that noise in the transmission lost its way.

3、Structural design and shock absorption

Engineers in the structural design of the dishwasher, the use of delicate balance and stability art, in order to achieve the purpose of shock and noise reduction.

(1). damping feet

The four silicone shock-absorbing feet on the bottom of the dishwasher are as light and flexible as a ballerina's toes. They can automatically adjust the height, according to the running state of the dishwasher fine adjustment, ensure that the dishwasher in the operation process is always stable, reduce the noise caused by shaking.

(2).acoustic blanket

The sound insulation felt filled between the inner liner and the outer shell not only has the sound insulation effect, but also can effectively block the transmission of vibration. It is like a soft cushion, avoiding the direct collision between metal parts, thus eliminating the harsh sound of metal friction.

(3).balance design of spray arm

The balance design of the spray arm is the embodiment of the wisdom of the engineers. Using fluid mechanics simulations, they were able to measure the weight of the spray arm to the gram, so that the centrifugal force generated as the arm rotated could be subtly counteracted. The optimized sprinkler system reduces the vibration amplitude by 60% , making the dishwasher run like an elegant waltz instead of wild rock.

4、Flow Control and noise reduction

Water flow control is an important part of the dishwasher mute technology.

(1). flow path optimization

The flow of water from a traditional dishwasher hits the inside wall, producing a“Slap” sound that sounds like an incongruous drumbeat. Modern dishwashers, by optimising the flow of water, divide it into hundreds of tiny streams that gently touch the cutlery like a piano key. The design of the spray hole is also changed from round to oval, so that the water column is fan-shaped diffusion, reducing the severe friction between water and air, thus reducing the noise.

(2).intelligent control of water pressure

Water pressure control is the conductor of water flow control. The intelligent sensor can monitor the load in the dishwasher in real time and automatically adjust the water pressure strength. In the gentle mode, the water pressure is only 0.8 bar, as soft as the spring rain. Even in the powerful mode, the water pressure is kept below 1.5 bar to avoid the water hammer effect, keep the water quiet while cleaning the cutlery.

Conclusion

From the optimization of motor and pump to the application of sound insulation materials, from the shock absorption of structural design to the noise reduction of water flow control, the quiet technology of Dishwasher is a multidisciplinary innovation revolution. It not only improves people's quality of life, but also reflects the profound understanding of humanistic care. When the dishwasher in the quiet to complete the cleaning mission, we feel not only the progress of technology, but also life because of technology has become more beautiful warmth and comfort.