准确加氟的依据和方法
Basis and method of accurate fluorination
1.定量加氟：在三通截止阀工艺口连接好三通阀、压力表、加氟软管、氟瓶或真空泵等。放氟抽真空后，开始慢慢加氟。用台秤等较精确的计量工具称重，当氟瓶内氟的减少量等于空调铭牌上的标准加氟量时，关闭氟瓶阀门。
1. Quantitative fluorination: connect the three-way valve, pressure gauge, fluorination hose, fluorine bottle or vacuum pump at the process port of the three-way stop valve. After defluorination and vacuum pumping, start to add fluorine slowly. Weigh with more accurate measuring tools such as platform scale. When the reduction of fluorine in the fluorine bottle is equal to the standard fluorine addition on the nameplate of the air conditioner, close the valve of the fluorine bottle.
2.测电流：将空调设置于制冷或制热高速风状态（变频空调设置于试运转状态）下运转，在低压截止阀工艺口处，边加氟边观察钳形电流表变化，当接近空调铭牌标定的额定工作电流值时，关闭氟瓶阀门。此时，让空调继续运转一段时间，当制冷状态下室温接近27℃或制热状态下室温接近20℃时，再考虑室外机空气温度、电网电压高低等影响额定工作电流的因素，同时微调加氟的量使之达到额定工作电流值，做到准确加氟。要进行微调的原因是因为空调铭牌标定的额定工作电流值是空调厂家在以下工况条件测试的数据：制冷状态，电源电压220V或380V时风扇高速风，室内空气温度27℃，室外机空气温度35℃；制热状态，电源电压220V或380V时风扇高速风，室内空气温度20℃，室外机空气温度7℃。
2. Current measurement: set the air conditioner in the cooling or heating high-speed air state (the variable frequency air conditioner is set in the test run state). At the process port of the low-voltage stop valve, observe the change of the clamp ammeter while adding fluorine. When it is close to the rated working current value calibrated on the air conditioner nameplate, close the fluorine bottle valve. At this time, let the air conditioner continue to operate for a period of time. When the room temperature is close to 27 ℃ in the refrigeration state or 20 ℃ in the heating state, consider the factors affecting the rated working current such as the air temperature of the outdoor unit and the grid voltage, and fine tune the amount of fluorine to reach the rated working current to achieve accurate fluorine addition. The reason for fine adjustment is that the rated working current value marked on the air conditioning nameplate is the data tested by the air conditioning manufacturer under the following working conditions: Refrigeration state, high-speed fan when the power supply voltage is 220V or 380V, indoor air temperature is 27 ℃, and outdoor unit air temperature is 35 ℃; In heating state, when the power supply voltage is 220V or 380V, the fan has high-speed air, the indoor air temperature is 20 ℃, and the outdoor unit air temperature is 7 ℃.
实践总结的微调数据是：制冷状态下，以室外机空气温度35℃为标准，室外温度每升高或降低1℃，增加或减少额定工作电流值的1.4%；制热状态下，以室外机空气温度7℃为标准，室外温度每升高或降低1℃，增加或减少额定工作电流值的1%；制冷JDG金属穿线管 不锈钢链板 隔离墩模具 检查井钢模具 流水槽模具 阶梯护坡模具 护坡砖模具 遮板模具或制热状态下，以额定电源电压220V或380V为标准，电源电压每升高或降低1V，减少或增加额定工作电流值：单相1匹0.025A，1.5匹0.025A×1.5，2匹0.025A×2，3匹0.025A×3；三相3匹0.025A×3/3，5匹0.025A×5/3，10匹0.025A×10/3。
The fine adjustment data summarized in practice is: under the refrigeration state, with the outdoor unit air temperature of 35 ℃ as the standard, the outdoor temperature increases or decreases by 1 ℃ every time the outdoor temperature increases or decreases by 1.4% of the rated working current value; In the heating state, take the outdoor unit air temperature of 7 ℃ as the standard, and increase or decrease 1% of the rated working current value every 1 ℃ increase or decrease in the outdoor temperature; In the cooling or heating state, the rated power supply voltage shall be 220V or 380V as the standard. For each increase or decrease of 1V, the rated working current shall be reduced or increased: single phase 1p 0.025a, 1.5p 0.025a × 1.5, 2pcs, 0.025a × 2, 3pcs 0.025a × 3； Three phase 3P 0.025a × 3 / 3, 5pcs, 0.025a × 5 / 3, 10 pieces, 0.025a × 10/3。