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Do you know the working principle of commercial dishwashers?
While being widely used, people are paying more and more attention to commercial dishwashers. Many people have such doubts: How does it clean the dishes? Commercial dishwashers can be mainly divided into spray dishwashers and ultrasonic dishwashers through their different working principles. Ultrasonic dishwashers are not widely used due to their high noise, which has an impact on the health of users, and has a small market share. The spray type dishwashers are the mainstream on the market. Principle of Commercial Dishwasher The working principle of spray-type commercial dishwasher is not complicated. It mainly heats tap water, and sprays hot water mixed with special lotion and drier uniformly at high speed through two spray arms one on top and one on the bottom. On the tableware, the tableware is cleaned, sterilized, disinfected and dried. Some people may have questions, shouldn't it still be washed with water? Is it different from hand washing? In fact, the effect of water is huge, and the energy of water under different effects is also different. Commercial dishwashers affect the cleaning ability of water by changing factors such as temperature, mechanical force, chemicals, and time. Four factors that affect the cleaning ability of commercial dishwashers. 1. The mechanical force produces impact through the circulating water sprayed from the nozzle. The pressure is between 0.4-1.4 bar (bar), which acts on the surface of the tableware to wash away the dirt at the same time. Promote the dissolution of dirt particles and break them down into smaller units. 2. The higher the temperature, the stronger the water's ability to dissolve grease and decompose dirt, and the faster the speed. High-temperature water can reduce the adhesion between dirt and the object to be cleaned, reduce the viscosity of the dirt, increase the penetration rate of detergent components into the dirt and the penetration between the object to be cleaned and the dirt, and increase the speed of chemical reactions, such as decomposition and bleaching. 3. Time factor Under the action of time, the cleaning agent component penetrates into the dirt layer, so that dry hard and larger dirt soaks up, emulsifies grease, and converts insoluble dirt particles into soluble form. 4. Chemical agent factor Chemical agent There are two types of detergents and driers, which can dissolve food residues/dirt components, chemically react with the dirt components, and fully wet the surface of the grease to be cleaned. These four factors influence each other and work together under the action of water. At the same time, the water under the action of these four factors is different from the water flowing out of our natural water pipes. It contains powerful cleaning power and is fully capable of cleaning tableware. Principle of Automatic Dishwasher The automatic dishwasher uses high temperature and high pressure water flow to mechanically wash the surface of the tableware 360°, and the detergent decomposes the oil and residue on the surface of the tableware. In addition, the hot water soaks the food residue to make the oil and residue quickly Decompose and fall off, and achieve the dual effect of cleaning and sterilization. The working method of Midea dishwasher is based on the result of the combination of mechanical action and chemical action. The washing mechanism is as follows: 1. Mechanical action, driven by the washing pump, the washing liquid is sprayed to directly wash the surface of the tableware. The direct washing effect of the washing liquid on the surface of the tableware is related to the pressure, angle and speed of the jet water sprayed from the spray arm. The washing liquid indirectly washes the surface of the tableware in a spray state. The washing liquid rebounds after being sprayed to the tableware and the inner container, and the washing liquid returns to the surface of the tableware after being sprayed. 2. Chemical effect, through the water softener containing ion exchange resin, effectively remove the calcium and magnesium ions that affect the saponification reaction, improve the water quality, and make the detergent fully play its role. The detergent added in the washing process has a good alkaline saponification reaction with the grease in the tableware, so that the oil stains are separated from the tableware. When the water temperature reaches 45℃～50℃, the active substance can exert its greatest effect. In view of the unique washing method and washing environment of the dishwasher, the dishwasher has good sterilization and sterilization functions, such as E. coli, Staphylococcus, etc., can be killed by keeping it in a temperature environment of 60°C for 20 minutes. Hepatitis B and other viruses that are not easy to kill under high temperature can be completely removed by repeated washing and drainage processes. At the same time, the detergent itself has a good inhibitory effect on various bacteria. Previous: With a pasta cooker, how to make 3000 servings of pasta? Next: Introduction to the design of various functional rooms in the back kitchen of a commercial kitchen