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Analysis of intelligent air conditioner temperature controller Market
来源: | 作者:electronics-101 | 发布时间: 2016-11-08 | 477 次浏览 | 分享到:
The thermostat has been developing rapidly in the electronics industry for a long time. Due to the regional air conditioning unit can flexibly control the start and stop of the indoor temperature, and can save space and cost, fan coil plus fresh air system (FCU) has been in the guest rooms and business to rent industry, hotels and office buildings and other buildings preferred semi central air conditioning system type.
The thermostat has been developing rapidly in the electronics industry for a long time. Due to the regional air conditioning unit can flexibly control the start and stop of the indoor temperature, and can save space and cost, fan coil plus fresh air system (FCU) has been in the guest rooms and business to rent industry, hotels and office buildings and other buildings preferred semi central air conditioning system type. The room air conditioner temperature controller is the key to control the cooling and heat of the terminal unit fan coil unit (FCU), and realize the temperature control and energy saving operation of the compartment.
The ordinary fan coil air conditioner temperature controller is basically an independent closed loop temperature regulation system, mainly composed of temperature sensor, double position controller, temperature setting mechanism, manual three speed switch and hot and cold switching device. Its principle is to control air conditioning thermostat based on double control signal comparison results of temperature sensor measured at room temperature and the set value, the control of electric water valve and cold water circulation pipeline (two valve or a three-way valve switch is cut off) and open the way to the circulation of the coil, regulating air temperature (cooling capacity).
The first generation air conditioner temperature controller is mainly electrical products. The temperature sensor of the air conditioner temperature controller adopts double metal piece or pneumatic temperature package. The preset temperature is adjusted by the preset temperature to set the temperature. The fan three speed switch and the seasonal switch are the splash type mechanical switches. This kind of air conditioner temperature controller products generally exist such problems as too high temperature setting value, too large time constant, and easy damage of mechanical switch.
Second generation air conditioning thermostat for electronic products, the temperature sensor uses thermistor or thermal resistance, temperature and wind speed part of the switch through the touch keys and LCD screen to realize man-machine interface, and automatically switch, operational amplifier circuit and switching circuit to realize the double position control. The intelligent air conditioner temperature controller product improves the human-computer interaction interface, solves the problem of "temperature setting graduation value is too thick" and so on, but there are still some problems such as "low control precision", "time constant", "complex operation" and so on.
At present, manufacturers at home and abroad are researching and developing the third generation intelligent room temperature air conditioner temperature controller. The manufacturers respond to the national policy actively, and apply the new control model and the NC chip to realize intelligent control. Now, domestic manufacturers have produced intelligent air-conditioning thermostat, and has been applied to the actual project. This production drives the development of electronic industry.