Many manufacturers are asking about the life of the Electric Towel Rack!
 
How much is the ideal value of a good product life should be reasonable? More than one person, are thinking about the same problem, they are urgently want to know the result to respond to the market's questions, personally summarized the following points, hope to help you !
 
1，Selection of materials
2，Importance of design
3，Temperature control unit
4，Thermal efficiency conversion
 
Choice of materials - Before I answer the question, most people will probably think that the better the material is used, the longer the life, the more durable the product, theoretically speaking . The reason is that if you put the above three key points together to understand this problem, maybe you will change your view, the choice of materials, the importance of the term life is less than 10%. Manufacturers choose the best materials to produce hot wire products, can only play a multiplier effect with half the effort, but not absolute !
 
Design importance—in the case of achieving the purpose, can design 10W under the premise, do not force to do 20W, this is not in line with the concept of environmental protection and energy saving, a good product, need to collect a lot of test data, through different data, to determine the direction of the product forward, can be summarized in two words, (enough) on the line . Do not blindly pursue high power to improve heating efficiency, so as to shorten heating time and increase the experience of consumers !
 
Temperature control unit - this is the core process of a product, if the internal hot-wire component is the heart, then the temperature control unit is the human brain, he grasps the time, temperature, and data changes of all components, just like a key . In the control of temperature, Many people will set to 70 degrees,75 degrees, and even 80 degrees, of course, there are some set at 55 degrees and 65 degrees, their purpose is almost the same, in addition to the role of drying towels, but also hope to be able to use as electric heating, this is a wrong idea, can only be understood to a certain extent, play a role in assisting home heating . Therefore, according to the summary of experience, the temperature is set at 55-60 degrees is the safest, but also the most energy saving, more than this value, not recommended to adopt, first of all, energy consumption is more serious, followed by the safety factor will be greatly reduced !
 
 
Thermal efficiency conversion— I mentioned three points of view, this aspect is the most important, but also the key factor to determine the life of the product, if the thermal efficiency design is good, not only can shorten the heating time, but also can improve the consumer experience, and can achieve the purpose of energy saving, how to improve thermal efficiency, it is not only so simple to say, There are also many factors in his decision, such as the following points !
 
1，Thickness of the metal tube and the importance of material selection
2，Spray layer selection
3，Thickness of the tube diameter
4，Control unit sensitivity
5，The Heating wire contact density, volume, volume and equivalent factors
 
The thickness of metal pipe and importance of material selection — towel rack category has many : Such as Aluminum products, Stainless steel, Carbon steel and other materials, with the transition of the market, product upgrades . As current that carbon steel towel rack, is slowly withdrawing from the market, the main reason is too heavy, installation is not very convenient, heating efficiency is not high, not easy to be accepted by consumers, Stainless steel and Aluminum Towel racks are more easily accepted by consumers .
 
Spray layer selection- it is best to choose paint with metal components . Because this will increase the thermal conductivity, reduce the loss of heat in the conduction process, some manufacturers often use whatever paint is what, I do not know if you have encountered, the general paint made of the shelf, than the metal paint made of the shelf, temperature is 5-8 degrees lower, even some manufacturers do not know the reason !
 
The thickness of the diameter of the metal pipe is equally important, most towel rack manufacturers when design of the shelf, will not consider these factors, only feel that the structure should be beautiful, resulting in a longer heating time, the temperature can not meet the expected requirements . At moment , most frequently used heating-wire use program is the threading method, that is, a strip of heating-wire, through artificial means, into the metal tube, In the electric energy, let the heater heating temperature conduction, thick metal tube, large space, is the main reason for a lot of heat loss, process is simple, low cost, almost 95% of the manufacturers use this program, this process is good and bad for the market evaluation !
 
Control unit sensitivity- is a very important rhythm, high-end towel rack . Almost every product will be installed with an NTC as an important signal to collect heat data, in the temperature signal feedback to the PCB, so as to achieve the temperature can achieve self-regulation, self-control of a purpose, NTC installation position has become the focus. Some people will be directly fixed on the metal pipe, and some for safety, will be directly fixed on the heating wire . This question actually hardly to answer, because there are more manufacturers, more types than more, the structure is the same, material change coefficient is large, according to the situation, the need for a lot of data testing, in order to give a reasonable answer !
 
 
 
The contact density of heating wire, volume, volume and equivalent factors， temperature level, temperature control, metal thickness, this is very critical. The smaller the temperature difference between the temperature of the metal surface and the temperature of the heating wire surface, the more successful the design and the better the life. This problem is difficult to analyze from a single point of view, can only be found through actual measurement. According to empirical analysis, 80% of manufacturers have a temperature difference of about 70 degrees, some may be higher, personal summary is as follows :
 
1-      The temperature difference between the heating wire and the metal pipe, more than 65 degrees, the probability of problems will be relatively large, indicating that there are many inappropriate places in the design need to be corrected, easy to cause the heating wire to burn out, the insulation layer is easy to harden, resulting in insulation loss, leakage, resulting in home safety valve trip, not recommended mass production !
2-      The temperature difference between the heating wire and the metal pipe is 55-60 degrees, indicating that the design is general, although it can be used, the life is not too good, generally speaking, the life is generally 3-5 years, but it is not absolute, but also depends on the frequency and use of customers !
3-      The temperature difference between the heating wire and the metal tube is 35-45 degrees, indicating that the design is ideal, technical personnel are experienced, they know the focus of development is there, if they avoid contact with some technical shortcomings, so that the utilization rate of thermal efficiency can achieve the best effect .
4-      The temperature difference between the hot wire and the metal pipe is 25-35 degrees, indicating that the design is very strong, the structural regulations are clearly designed, and the manufacturers are experienced in actual combat. In such a state of thermal efficiency, product life is generally more than 8 years, probability of product problems is almost zero !
 
Conclusion: 

Electric towel rack, manufacturers have large and small scale, a variety of styles, material categories are more, there are export, domestic sales, the understanding of temperature and customer requirements, are also different, data need to be flexibly used, in order to play his and to, this article for individual products and individuals may not be practical, in order to avoid misleading everyone, Please use for reference only! (Without the consent of the author, please reprint or publish to any other platform)