1. The phenomenon of fluorine deficiency in air conditioning

    压缩机连续运转30分钟后，若制冷系统“缺氟”，会出现下述现象：

If the compressor runs continuously for 30 minutes, if the refrigeration system is "lack of fluoride", the following phenomena will appear:

          1、气管阀门发干，用手触摸没有明显的凉感。其原因是制冷剂不足导致蒸发器内的沸腾终结点提前，使该阀的制冷剂过度增大，阀门的温度升高，大于室外空气的漏点温度。

1, trachea valve dry, touch with no obvious cold feeling. The reason is that the lack of refrigerant causes the boiling end point in the evaporator to advance, which makes the refrigerant of the valve overincrease and the temperature of the valve increase, which is greater than the leakage point temperature of the outdoor air.

  2、液管阀门结霜。其原因是“缺氟”导致液管内压力下降，沸点降低，使阀门温度低于冰点。

2, liquid pipe valve frosting. The reason is that "lack of fluorine" causes the pressure drop in the liquid pipe, and the boiling point decreases, so that the valve temperature is below freezing point.

  3、打开室内机面板，取下过滤网，可发现部分蒸发器结露或结霜。其原因是由于制冷剂不足，仅仅使部分蒸发器发生了沸腾吸热，使制冷面积相应减少。

3. Open the indoor machine panel and remove the filter screen. Some evaporators can be found to be condensation or frosting. The reason is that the refrigerant is not enough, only partial evaporators have boiling heat absorption, so that the cooling area is reduced accordingly.

          4、室外机排风没有热感。其原因是制冷剂不足导致冷凝压力、冷凝温度都降低，排风温度也随之降低。

4, outdoor air exhaust has no heat. The reason is that the lack of refrigerant causes condensation pressure and condensation temperature to decrease, and the exhaust temperature decreases.

  5、排水软管排水断断续续或根本不排水。其原因是蒸发器制冷面积减少，结露面积也减少，凝结水量降低。

(5) drainage hose drainage is intermittent or undrained. The reason is that the evaporator cooling area is reduced, the condensation area is reduced, and the condensate volume is reduced.

  6、室外机气、液阀门有油污，有油污就有泄露。其原因是制冷剂与冷冻油有一定的互溶性，氟从漏点逸出后进入大气中，而油附着在漏点周围。

6. The air and liquid valves of outdoor units have oil pollution, and there is leakage of oil. The reason is that the refrigerant has certain solubility with refrigerant oil, and the fluorine enters the atmosphere after escaping from the leak point, and the oil adheres around the leakage point.

 7、测量空调器的工作电流小于额定电流。其原因是制冷剂不足而使压缩机工负荷减少，电流下降。

7. Measuring the working current of the air conditioner is smaller than the rated current. The reason is that the refrigerant is insufficient, which reduces the load of the compressor and reduces the current.

         8、从室外机充氟口测量的压力低于0.45Mpa。其原因是制冷剂不足导致了蒸发压力下降。

8. The pressure measured from the fluorine outlet of the outdoor unit is less than 0.45Mpa. The reason is that the lack of refrigerant causes the evaporation pressure to drop.

 另外，室外机任何一个阀门结霜都属不正常现象；只有液管阀门结霜说明“缺氟”；只有气管阀门结霜说明略微“缺氟”或环境温度过低；两个阀门都结霜说明系统有二次节流现象。

In addition, the frost of any valve in the outdoor unit is abnormal; only the frosting of the pipe valve indicates "lack of fluorine"; only the frost of the trachea valve indicates a slight "lack of fluorine" or the low ambient temperature; the two valves have frosting indicating that the system has two throttling phenomena.

二、加氟设备：

Two. Fluorine adding equipment:

 

It

加氟管（充氟管）

Fluorine tube (fluorine filled tube)

 

It

真空压力表带三通阀

Triple valve of vacuum pressure strap

 

It

开瓶阀（开启阀）

Opening valve (opening valve)

 

It

三、“空调补氟”的操作

Three, the operation of "air conditioning and fluorine"

   1、用充氟软管连接制冷剂钢瓶、修理表和充氟口，排除软管内空气。

1, use the fluorine hose to connect the refrigerant cylinder, the repair table and the fluorine outlet, and remove the air in the hose.

 

It

2、启动压缩机，利用钢瓶与制冷系统压力差充入制冷剂气体（若制冷系统预先抽真空，应在停机状态下先充入制冷剂气体，待压力表指针不再升高时，再启机充氟）

2, start the compressor, use the pressure difference between the cylinder and the refrigeration system into the refrigerant gas (if the refrigeration system is evacuated in advance, the refrigerant gas should be filled in the stop state first, when the pressure gauge no longer rises, then the engine will be filled with fluorine).

 

It

3、充氟过程中观察压力表指针变化。通过间断地充氟使压力表指针维持在0.45-0.5Mpa范围内。

3. Observe the change of the pressure meter pointer during the process of fluorine filling. The pressure gauge pointer is kept in the range of 0.45-0.5Mpa by intermittent fluorine filling.

 

It

4、试运转30分钟后，空调器应出现上述的正常运转状态。

4, after commissioning for 30 minutes, the air conditioner should operate normally.

 

It

5、停机后用洗涤灵检查各个泄露疑点。

5. Check all the leak points with washing spirit after shutdown.

 

It

空调加氟方法（家用分体空调篇）以 F22 氟利昂为例

Air conditioning and fluoridation method (household split air conditioner) F22 freon as an example

维修工具

Maintenance tools

双表头压力表

Double head pressure gauge

蓝色表头与蓝色阀门  是低压区  设计工作压力为 -1bai--10bai

The blue head and blue valve are low pressure area. The design pressure is -1bai--10bai

红色表头与红色阀门  是高压区  设计工作压力为 1bai--30bai

The red head and the red valve are high pressure zones. The design pressure is 1bai--30bai

加氟管

Fluorine tube

蓝色  为低压管  与蓝色表头相接

To connect the low pressure tube to the blue top

        红色  为高压管  与红色表头相接

The red tube is connected to the red head.

        黄色  工艺管    与氟瓶，氮气或真空泵相接

The yellow tube technology is connected to the flask, nitrogen or vacuum pump.

所有氟管 设计工作压力为 30bai。不同顔色只是为了维修时方便标识。

The pressure of all fluorine tube design was 30bai. Different colors are only easy to label for maintenance.

氟瓶

Fluorine bottle

氟瓶阀门为单向阀并配备有安全阀。更多氟瓶知识请点击查看 空调加氟 

The fluorine valve valve is a one-way valve and is equipped with a safety valve. More fluorine bottle knowledge, please click on the air-conditioner and fluorine

加氟前的准备工作：

Preparation before adding fluorine:

首先将双表头压力表与氟管相接

First, the double head pressure meter is connected with the fluorine tube

黄色工艺管与氟瓶相接

Yellow process tube connected with fluorine bottle

拆下空调三通修理阀帽

Remove the three - way repair valve cap of the air conditioner

空调器三通阀内置阀蕊 如图

Built-in valve of three valve in air conditioner

空调加氟管内置顶针    如图 

Air conditioning and fluorine tube built-in thimble

将蓝色管套上三通阀工艺口

The three-way valve technology port on the blue tube

这时打开氟瓶阀门 并小开双表头低压氟 排出氟管与氟表中空气约5秒钟后 拧紧加氟管直至顶开三通阀蕊。

Then open the flask valve and open the double head low pressure fluorine to drain the fluorine tube and the air in the fluorine meter for about 5 seconds, then tighten the fluorine pipe until the three-way valve is opened.

这时可开机运行空调加氟量的判定：

At this time the air conditioning can be operated to determine the amount of fluorine.

1．根据压力表的读数。

1. according to the readings of the pressure gauge.

2．听压缩机的声音，加氟多，压缩机重，声音较沉闷，少了反之，一般压缩机有一个正常的负荷，多了可能损坏压缩机，少了可能“制冷效果比”不好。

2. listen to the sound of compressor, add fluorine more, compressor heavy, sound more dull, less the opposite, the general compressor has a normal load, more likely to damage the compressor, less likely "refrigeration effect than" bad.

3．如有电流表可以测试一下压缩机的工作电流，这样做比较理想，而且可以较准的判断加氟量。

3. if there is an ammeter to test the working current of the compressor, this is ideal, and the amount of fluorine can be judged more accurately.

4．看室内机的出风凉度，一般出风口在8-15℃之间.

4. look at the air cooler of the indoor unit. The outlet is usually between 8-15 degrees.

空调加氟压力

Air conditioning and fluorine pressure

目前大部分家用空调器均采用制冷剂F22  俗称：氟  学名：二氟一氯甲烷 分子式：CHClF2

At present, most of the household air conditioners use refrigerant F22, commonly known as fluorine. The scientific name is: two fluoro methyl chloride molecular formula: CHClF2

注：1  制冷剂F22 的对应蒸发温度（绿色圈 F22）

Note: the corresponding evaporation temperature of the 1 refrigerant F22 (green circle F22)

注：2  制冷剂压力（红色圈 此表为低压表 可测数值为 1-10bar） 

Note: the refrigerant pressure of 2 (red circle) is 1-10bar.)

点：2  当前制冷剂的压力为 5 bar 约5kg/cm2（红色圈）

Point: 2. The current refrigerant pressure is 5 bar, about 5kg/cm2 (red circle).

点：1  在当前压力下 制冷剂F22 的蒸发温度为6℃

Point: 1. Under the current pressure, the evaporating temperature of refrigerant F22 is 6 C.