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中央空调电子膨胀的工作原理!

来源: 日期:2019-08-22 发布人:admin
  交流接触器是一种利用电磁引力开关电路的自动控制装置。中央空调维修制冷技术属于普通制冷范围,主要采用液体汽化制冷方式。(主要是利用液体汽化过程吸收潜热,而液体压力不同,其沸点也不同,压力越低,沸点越低。)根据热量从高温物体向低温物体传递的不同方式,可分为:蒸汽压缩制冷、吸收式制冷。
  AC contactor is an automatic control device using electromagnetic gravity switch circuit. Central air conditioning maintenance refrigeration technology belongs to the general refrigeration scope, mainly using liquid vaporization refrigeration mode. (The latent heat is absorbed mainly by the vaporization process of liquids, and the boiling point of liquids varies with the pressure of liquids. The lower the pressure, the lower the boiling point. ) According to the different ways of heat transfer from high temperature object to low temperature object, it can be divided into steam compression refrigeration and absorption refrigeration.
  接触器结构主要由电磁系统(铁芯、线圈和触头)组成。对中央空调蓄冰系统进行了改造。采用电制冷空调冰的主要机构,在低功耗、低负荷时将其储存在蓄冰设备中。在白天电力负荷较高时,避免用电高峰电价,停止或间歇运行电制冷空调主机,释放储存在蓄冰设备中的冷量,以满足建筑物空调负荷的需要。线圈和静态铁芯(也称为下铁芯)是固定的。当开关通电线圈时,线圈产生电磁引力,吸引移动的铁芯(也称为上铁芯)。将三个移动触点向下驱动至三个固定触点,从而将电能从接触器的输入端传输到接触器的输出端。
  The structure of contactor is mainly composed of electromagnetic system (iron core, coil and contact). The ice storage system of central air conditioning was reformed. The main mechanism of ice storage in electric refrigeration air-conditioning system stores it in ice storage equipment at low power consumption and low load. When the power load is high during the day, avoid the peak electricity price, stop or intermittently run the electric refrigeration air-conditioning mainframe, release the cold stored in the ice storage equipment to meet the needs of building air-conditioning load. Coils and static cores (also known as lower cores) are fixed. When switching on the coil, the coil generates electromagnetic attraction, attracting the moving core (also known as the upper core). Three moving contacts are driven downward to three fixed contacts, so that electric energy is transmitted from the input end of the contactor to the output end of the contactor.
济南空调维修
  交流接触器电路分为两部分:主电路和控制电路。中央空调维修制冷剂会在低温低压下蒸发,产生冷效应。在常温高压下冷凝,向周围环境或冷却介质释放热量。蒸汽在室温和高压下凝结成高压液体。在进入容器之前,它需要降低到蒸发压力。通常,负载电源电路称为主电路,线圈的开/关控制电路称为控制电路。空调的主电路包括电动机、电加热器、电加湿器等电源电路。控制电路有过压、过流、欠压、过温保护、三分钟延时、压力保护等电路。
  AC contactor circuit is divided into two parts: main circuit and control circuit. Refrigerants for central air conditioning maintenance will evaporate at low temperature and low pressure, which will produce cold effect. Condensation at room temperature and high pressure releases heat to the surrounding environment or cooling medium. Steam condenses into high-pressure liquid at room temperature and high pressure. Before entering the container, it needs to be reduced to evaporation pressure. Usually, the load power supply circuit is called the main circuit, and the open/close control circuit of the coil is called the control circuit. The main circuit of air conditioning includes power supply circuits such as motor, electric heater and humidifier. Control circuit has over-voltage, over-current, under-voltage, over-temperature protection, three-minute delay, pressure protection and other circuits.
  使用交流接触器时,应根据电流不小于额定负载的原则选择电流等级。例如,电动机的额定电流为8.6a,可以使用10A接触器。此外,接触器的线圈电压应根据控制器电路的电压选择。目前国内接触器主要有3TB系列和CJX系列。
  When using AC contactors, the current level should be selected according to the principle that the current is not less than the rated load. For example, the rated current of the motor is 8.6a, and 10A contactor can be used. In addition, the coil voltage of the contactor should be selected according to the voltage of the controller circuit. At present, domestic contactors mainly have 3TB series and CJX series.

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