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空调维修准确加氟的方法

网址:www.bjguomei.cn  2020-11-23  作者:admin    阅读:

一、准确加氟的前提条件
1、 Prerequisite for accurate fluorination
1.维修的空调必须符合其使用条件及安装标准。
1. The air conditioner to be repaired must meet its service conditions and installation standards.
2.维修的空调控制系统及执行元件必须正常;管路系统必须已有效排除空气、水分、阻塞、泄漏点等情况;过滤网、内外热交换器应清洁,通风良好。
2. The air conditioning control system and actuator must be normal; the pipeline system must have effectively eliminated air, moisture, blockage, leakage point, etc.; the filter screen and internal and external heat exchanger should be clean and well ventilated.
3.维修工具及材料必须合格。
3. Maintenance tools and materials must be qualified.
4.严格按加氟工艺*作。
4. Strictly follow the fluorine adding process.
二、准确加氟的依据和方法
2、 The basis and method of accurately adding fluorine
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, fluorine hose, fluorine bottle or vacuum pump at the process port of the three-way stop valve. After the fluorine is released and vacuumized, fluorine is added slowly. Use a platform scale and other more accurate measuring tools to weigh. When the reduction of fluorine in the fluorine bottle is equal to the standard fluorine addition amount on the air conditioner nameplate, close the fluorine bottle valve.
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 state of refrigeration or heating high-speed wind (variable frequency air conditioner is set in the trial operation state). At the process port of low-pressure stop valve, observe the change of clamp ammeter while adding fluorine. When it is close to the rated working current value calibrated by 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 under the refrigeration state is close to 27 ℃ or the room temperature under the heating state is close to 20 ℃, the air temperature of the outdoor unit, the grid voltage and other factors affecting the rated working current shall be considered, and the fluorine content shall be adjusted to reach the rated working current value, so as to accurately add fluorine. The reason for fine adjustment is that the rated working current value calibrated by the air conditioner nameplate is the test data of the air conditioner manufacturer under the following working conditions: Refrigeration state, high-speed fan when the power supply voltage is 220 V or 380 V, the indoor air temperature is 27 ℃, and the outdoor unit air temperature is 35 ℃; in the heating state, when the power supply voltage is 220 V or 380 V, the fan high-speed wind, the indoor air temperature is 20 ℃, and the outdoor unit air temperature is 20 ℃ 7℃。

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