The working principle and application range of jump type temperature controller

Jump type temperature switch is a bimetallic sheet temperature controller with shell, common such as KSD301,KSD302, etc., the temperature switch is a new product of bimetallic sheet temperature controller, mainly used as a variety of electric heating products with overheating protection, usually connected with the thermal fuse, jump type temperature switch as a primary protection. The thermal fuse is used as the secondary protection when the thermal element overtemperature is caused by the loss or failure of the jump temperature control switch. The combination of the two can effectively prevent the burning out of the thermal element and the fire accident caused by it, and the application range is very wide.

Working principle: Jump type temperature controller is also known as bimetal temperature controller, it is mainly composed of shell and internal bimetal sheet, using metal sheet as temperature sensing component, when the machine equipment is in normal working state, temperature controller is in free state, contact is in closed/open state, when the temperature reaches the action temperature of metal sheet, the internal stress will make the metal sheet quickly jump action, Make the contact open/close. When the device reaches the reset temperature, the contact will automatically reset and return to the normal working state.

Due to the fixed temperature of the action of the metal sheet, fast action, less affected by the radio and arc, durable, safe and reliable, so the use of a very wide range, usually with the use of hot melt resistance. The jump temperature controller is taken as the primary protection and the hot melt resistance as the secondary protection, which can effectively prevent the occurrence of fire accidents caused by overheating.

Application: In view of the superior characteristics of the jump temperature controller, to get a wide range of applications, in water dispensers, electric heating, microwave oven, electronic disinfection cupboard and other household appliances, but also widely used in power supply equipment, rectifier equipment and a variety of electric heater appliances to do temperature control protection.

In recent years, the concepts of intelligent building and smart home have gradually gained popular support and heated the market of related components. Thermostat has become the leader in the market of related components by taking advantage of this wind, and its development prospect is bright. According to the latest research report of Navigant, the global intelligent temperature monitor market will grow from $86 million in 2013 to $1.4 billion in 2020, visible intelligence is an important development direction of temperature monitor in the future, the growth space is huge, so, the future temperature monitor will develop to which direction? Combined with the development history of temperature controller, market status and future trend, the author thinks that the future temperature controller will be more accurate, more safe and reliable, more intelligent, network. To be specific:

1. High precision

In view of the limitations of technology and market, most of the temperature controllers used in the past are 8-bit converter, the temperature measurement accuracy is not very high, the resolution can only reach 2℃, with the progress of technology, more and more enterprises began to develop A variety of high-precision temperature controllers, some temperature controllers using 9-12 bit A/D converter, the accuracy of 0.5~0.0625℃. While western countries are leading the way, domestic companies are catching up.

2. High reliability

In the past, the production of temperature controller was rough and there was a problem of large noise of machine operation. With the continuous improvement of micromachining, chemistry, welding and other processes in the production process of temperature controller, the above problems have been greatly improved. As a very high real-time instrument, the temperature controller needs to complete the data acquisition, calculation processing and output in a few microseconds.

Step 3 Be smart

Intelligent temperature controller is a main direction of future development of temperature controller. The so-called intelligent temperature controller is a temperature controller with multi-variable input and output functions, which can automatically adjust the temperature and self-diagnose the function. The current Google nest thermostat and the Lyric thermostat released by Honeywell have become a benchmark for thermostat intelligence.