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Soymilk machine solution
General home appliances are either electric products or electric heating products, and the soymilk machine is a product that combines electric and electric heating functions together, and is equipped with computer intelligent control to form a relatively complicated system. It seems simple but in fact the structure is more complex, soymilk machine is not easy to do well. At present, the repair rate of soymilk machine products is still relatively high. Better companies can control it at about 3%, and many companies are still at about 10% or even higher.
Soymilk machine is currently a category with high technical content in kitchen appliances, because it belongs to electric heating series appliances. There are many categories of kitchen appliances, but the overall technology has two characteristics, either it only heats and does not rotate, such as an electric oven; or it is Only rotate without heating, such as cooking machines and other products. However, the soymilk machine needs both heating and rotation. It is necessary to accurately control the temperature and at the same time carefully control the rotation process. Therefore, there will be many variables in the processing process, and it is for this reason that the industry has a high technical content. It is not an easy task to do it well, and key technologies must be mastered.
1. The design idea of the soybean milk machine
After the beans are soaked in high-temperature water, the beans will be easier to break. Therefore, the water in the soybean milk machine must be heated before breaking. When the temperature reaches a certain level, the soymilk machine starts to grind. After repeated grinding for several times, it is heated again. Because the soymilk produces a lot of foam during the re-grinding process, the foam overflows during heating. To prevent overflow, an anti-overflow circuit is designed and heated several times. , the soymilk machine stops working, and the buzzer indicates that the soymilk is finished.
How to achieve these functions, first of all, consider the core of the control system, as the core of the control system is the heart of the soybean milk machine. Embedded ARM can realize these functions very well and the technology of ARM is becoming more and more mature. Secondly, the temperature detection is considered. Beans are easy to grind after being soaked at high temperature, but how to control the temperature requires temperature detection. There are two ways to control the temperature. One is thermistor. Third, consider the temperature sensor, and finally choose the thermistor, which is more convenient than the temperature sensor. Fourth, consider overflow prevention. The anti-overflow selects the bidirectional voltage comparator, and the different positions of the liquid level lead to different output results of the voltage comparator to realize the stop of overflow. Doing this well can basically realize the intelligence of the soybean milk machine. After the idea is established, all you need is to understand the working principle of the soybean milk machine, the basic structure of the selected chip and the function of the pin port.
2. The technical principle of the soybean milk machine solution
1. Structural analysis of soybean milk machine
Soymilk machine products are analyzed from the structure. The main components include more than a dozen such as machine head, body, motor, coupling, cup cover, cup body, cutter shaft, crushing cutter and control circuit board. To make these components work well, the core is control technology. We can compare it to the brain. To make a good cup of soy milk, the soymilk machine needs to grasp two links, one is crushing, and the other is boiling. Whether the crushing is thorough or not is very important to the taste. Only soybean milk that is crushed more thoroughly and boiled more fully can achieve good taste and high nutritional value.
2. The working principle of the soybean milk machine
Soymilk machine is composed of grinding part, control part, signal detection part, alarm circuit and voltage stabilizing circuit. When the soybean milk machine is working, the voltage stabilizing circuit rectifies the 220V voltage into 12V voltage to supply power to the buzzer and the intermediate relay. In addition, the 7805 stabilizes the voltage into 5V voltage to supply power to the main control chip. After adding an appropriate amount of water and beans, press the start button and the soymilk machine starts to be heated by the preheating module. After heating to 80°C, the main control chip starts to control the rotation of the motor. During the beating process, the beating is timed for 10s and then stopped for 5s, repeated several times , stop beating. Start heating, and detect the water level during the heating process to prevent overflow and water shortage. When heating, if there is water shortage during the detection process, it will alarm. If the foam touches the anti-overflow electrode, the heating tube stops heating until the foam detaches from the anti-overflow electrode, reheats, repeats several times, stops working, and the alarm prompts that the soybean milk is completed.
In order to allow the machine to crush the beans more thoroughly, various companies have done a lot of work. At present, there are two kinds of products in the market: non-network and network-connected. From the perspective of crushing technology, the crushing of beans with a net is more thorough. Therefore, the soymilk machine products with a net taste better than those without a net.
3. Technical elements of the soybean milk machine solution
The necessary technologies commonly used in soybean milk machines are at least: boiling, water temperature control, motor control, and material selection. The soymilk machine market has been developing for nearly 20 years, but in the past 20 years, the enthusiasm of home appliance companies to participate is not high. Some big brands have participated in it, but finally withdrew. The reason is not only the small market size, but also the soymilk machine Technology is not easy to master. Seemingly simple models require multiple technical supports and a large amount of experimental data. The excellent products seen in the market cannot be achieved overnight. Soymilk machines, like other home appliances in the early stages of development, face the situation of lack of standards.
1. Boiling technology
The technique of boiling pulp is also very critical. The cooking process is crucial to the nutrition and taste of the final soy milk. In the process of boiling, the technical routes of various manufacturers are not the same, and the control of temperature is the most critical. The temperature at which the blade starts beating, the temperature at which the highest temperature and the lowest temperature are alternated, and the frequency of the alternation is the most scientific, etc. will all bring different quality soybean milk. Such as Joyoung's "slow fire cooking", the blade starts bean beating at the specified temperature, the alternating frequency of bean bean beating and boiling is set by program, and the small grains of the five grains are emulsified again through the process of boiling on high heat and cooking on low heat, and boiled slowly The smooth taste of boiled soy milk. The realization of this process needs to be controlled by a precise program, and the design of this program is obtained by the technical developers through a large amount of test data. It cannot be solved overnight, and it is the core technical secret of the enterprise.
2. Water temperature control technology
Since the air pressure and boiling point are different in different regions, the time required to make soybean milk is also different, so the control of water temperature is also one of the core technologies of soybean milk machine control technology. Joyoung has set up a special department to study soy milk technology, in-depth and meticulous research on what technology and under what circumstances the soy milk technology can make high-quality soy milk to achieve the best nutrition and taste, and then apply this technology to the development of Soymilk machine products also fundamentally solve the problems of nutrition and taste.
3. Motor control technology
If the control part of the soybean milk machine is compared to the brain, the motor can be regarded as the heart of the soybean milk machine. If the human heart does not beat, life will stop. The stability of the motor plays a vital role in the entire product and determines the service life of the entire machine. The rotation time of the motor part of the soybean milk machine is controlled by the chip, but the speed is not controlled by it, but by the motor itself. The motor determines its rotation speed by controlling the current.
4. Material selection
In terms of materials, the choice of different materials also has a crucial impact on the safety, nutrition and taste of soy milk made by the soy milk machine. For example, the heating tubes of soybean milk machines, the heating tubes of soybean milk machines on the market are all made of stainless steel tubes. There are also companies exploring the use of other materials and heating methods. Such as electromagnetic heating, ceramic tube heating, glass tube heating, etc., but whether these heating methods will change the quality or even properties of soy milk still needs continuous exploration by technical R&D personnel. In addition, there is also a choice of material for the cup body, and there are many emerging materials to choose from. Such as stainless steel cups that can be kept warm, etc., but all need test data to check whether they can be used.
The technologies involved in the above soymilk maker are just the tip of the iceberg. The application of each technology is not independent, but has an internal relationship with each other. Ultimately, improving the quality of the soymilk maker requires rich experience and a large number of tests. Therefore It is said that the soybean milk machine product is a product with high technological content.
4. Excellent performance indicators of soybean milk machine
Soymilk maker is also a relatively special product. Whether the quality is good or not, there is no clear national standard to follow. The performance, materials used, and service life of soymilk maker are all regulated by the enterprise itself, and the enterprise standard is followed. Without the accumulation of experience, it is impossible to produce useful products. For example, there are standards for electric kettles. There are requirements for the level of the switch, how long the water boils and the switch should be tripped, etc. There are requirements in the standards. As long as the enterprise produces according to the requirements of the standard, the quality of the finished product will be basically the same. It is guaranteed. But the soymilk machine is different. To judge whether the product quality is good or not, in addition to ensuring the safety, convenience and durability of consumers, the taste of the soymilk is also an important part of the quality of the purchased product. Therefore, the products produced according to the standard can only be said to be 10% successful, and the other 90% is the company's research and development strength and production experience. For example, we all know that soy milk must be boiled to 100°C before it can be drunk, but it does not mean that soy milk tastes good as long as it is boiled to 100°C. It also depends on how your heating program is designed, whether it is boiled five times or boiled Six times, whether to boil the water first or beat the beans first. There are no written regulations in these countries, and companies must do a lot of experiments to find out the best heat and time, which requires sufficient production experience.
The soymilk made has a taste requirement, which is the special feature of soymilk machine products. The shape of the rotary cutter in the soybean milk machine, the program design of the circuit board, the heating method, and even the installation of a screw will all affect the taste. It can be said that the visible and invisible elements will affect the taste.
Quality is the life. It is not easy to make safe, durable, fashionable, convenient, and delicious soymilk products. Judging from my personal experience in the soybean milk machine industry, I think that the following points should be worked hard to produce products with stable performance.
5.The key points of the scheme design of soybean milk machine
1. The design is based on simplicity
The main function of the soymilk machine is to make soymilk, and there is no need to add too many functions. Moreover, the microcomputer control program of multi-functional products must be much more complicated, and the probability of failure will also increase. Therefore, the functional design of the product should be as simple as possible, so that users can reduce operations and reduce human failures. Some unnecessary functions can be omitted. For example, the function of heat preservation in household products is actually not very effective. If heat preservation is required, it must be prevented from burning dry. To prevent dry burning, there must be a water level requirement. But in the process of use, if the machine is lower than the water level, the machine may alarm, and consumers will think that your product quality is not good. Moreover, soy milk is also easy to deteriorate when stored in heat preservation, so drinking it now and processing it is the best way. Therefore, the product function design should be simplified as much as possible except for those with special needs.
2. Improve the tightness of the structure
It is very common for the soybean milk machine to cause the computer board to malfunction due to steam entering the head and condensing into water droplets on the computer board. The reason is that most soymilk makers use the motor to be placed on the top. If the machine head is not well sealed, the water vapor generated during heating can easily enter the machine head, causing damage to the motor or wiring. So to solve this problem, we need to start from two aspects, one is to solve the problem that the circuit board is afraid of water, and the other is to solve the problem of poor sealing.
To solve the computer board failure problem of soybean milk machine, we need to learn from the technology of other industries. In fact, many technical innovations are in some details, such as tying a wire to the soup spoon, so that the oil will not enter the soup. This is a very simple invention. Therefore, experienced companies will learn from the experience of different industries in improving some vulnerable parts. For example, the circuit board of the soybean milk machine is afraid of water, but the submersible pump can be used in a deep well for several years, so there may be something for reference. The speed and temperature of the car when driving are not lower than those of the soybean milk machine, but it will not leak oil or water. Why does the soybean milk machine leak steam? It must be that the sealing is not done well, so the design of the automotive oil seal on the circuit seal will make this problem well improved.
Of course, some improvements can also be made in terms of principle and structure, such as adopting a bottom-mounted design, heating the chassis, and placing the computer board and motor parts under the soy milk cup, so that the motor and circuit board will not be heated and damp, and can be made The component structure is easier to clean, the performance will be more stable, and the influence of human operation on it will be reduced.
3. Improve heat insulation performance
The motor of the soymilk machine runs at high speed during use, and the working time is relatively long when making soymilk. If the heat insulation is not good, it is easy to cause some parts to overheat, which will affect the stability and durability of the product. This requires lowering the temperature in places that are not resistant to heat, and not letting it be so high. To solve this problem, on the one hand, start with the material, choose materials with good heat insulation performance and high temperature resistance, and also consider the structure, for example, keep a certain distance between the head part close to the film, or add another Insulation layer, etc., these can play a role in cooling.
4. It is not easy to improve the stable model
For enterprises, there is nothing wrong with continuously upgrading existing products. But we should be clear about the core function of the soybean milk machine. If the core function is already good, then there is no need to change its core program and function. Because soymilk products need stability. Fancy things can launch new products through continuous innovation in appearance. At present, many companies have one set of procedures today and another set of procedures tomorrow. For example, a certain brand’s products are very stable, but the product innovation puts the transformer and the control board together. lesson.
6. Summary of Soymilk Maker Program
As the number of brands involved in the soybean milk machine industry continues to increase, the competition will further intensify. But improving product quality, reducing the repair rate, and ensuring stable product performance are the fundamentals for soybean milk maker companies to gain a foothold in the market.
The above are the details of the soybean milk maker solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have the electronic function development needs of soybean milk machine, you can rest assured to entrust it to us. We have rich experience in customized development of electronic products, and can evaluate the development cycle and IC price as soon as possible, and can also calculate the PCBA quotation. We are a number of chip agents at home and abroad, including MCU, voice IC, Bluetooth IC and modules, wifi modules. Our development capabilities cover PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development and other hardware and software design. It can also undertake the research and development of smart electronic products, household appliances scheme design, beauty equipment development, Internet of Things application development, smart home scheme design, TWS scheme development, Bluetooth audio development, children's toy scheme development, and electronic education product development.
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