Title: 2x Air Conditioner Fridge Air Dry Filter Part Chest Freezer Check Valve 12/13cm
2x/Lot Universal Copper Air Conditioner R600A Fridge Air Dry Filter Chest Freezer Check Valve 19 x 130 mm,Fridge 16 x 125 mm
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Dry Filter-12cm –For Fridge
Dimensions: φ16 x 125 mm, 2 Terminal (Inner): φ 2 mm , φ 5 mm
Dry Filter-13cm –For Chest Freezer
Dimensions: φ19 x 130 mm, 2 Terminal (Inner): φ 2 mm , φ 6 mm
Weight: about 60 g/pcs, 80g/pcs
包裝內容：
2x Dry Filter-As your choice.
—-（預設將隨機發送批次 / 顏色 / 類型）
Symptoms of clogged filter:
1. The filter becomes cold, and the pipe from the liquid outlet to the solenoid valve will condense and frost.
2. The cooling effect is poor, and the evaporator cannot be completely frosted.
3. The suction pipe is not cold, the compressor temperature rises, the cylinder head does not feel hot or cold, and the exhaust pipe is hot.
What is the role of filter drier in refrigerator refrigeration system?
The filter drier is a device that has the dual functions of adsorbing moisture and filtering the refrigerant. Its function is to filter the tangible dust carried in the process of refrigerant flow and the residual moisture in the adsorption refrigeration system, so that the refrigerator refrigeration system does not have “dirty blockage” and “ice blockage” failures.
The filter drier structure used in the refrigeration system of the refrigerator is equipped with a 120-200 mesh copper wire mesh inside and a desiccant is installed in the middle.
A 120-mesh copper wire screen is installed at the inlet of the filter drier 1015mm to preliminarily filter the large particles of impurities entrained by the liquid refrigerant from the condenser, and one is installed at 1520mm from the outlet of the filter drier. The 200-mesh copper wire mesh is used to intercept the fine particles of impurities carried by the liquid refrigerant. In this way, the layered interception and filtration can basically filter out the impurities carried in the refrigerant to ensure that the capillary is not dirty.
The desiccant in the filter drier for refrigerators uses a substance called molecular sieve.
Molecular sieve, also known as synthetic zeolite, is a kind of aluminosilicate with a crystalline framework structure. It is a white powder and is insoluble in water. The molecular sieve in the filter drier is generally molded into a small spherical shape with a binder. Its crystal gap is about 0.4nm, which can adsorb water molecules with a diameter of 0.170.38nm, and refrigerant molecules and frozen lubricants with a molecular diameter greater than 0.4nm Molecules cannot be adsorbed, so different molecular sieves can be used to screen substances of different diameters. This is why synthetic zeolite is called molecular sieves.
Each gram of molecular sieve can absorb 160-200mg of water. A dry filter contains about 10g of molecular sieve, which can generally absorb 1.6-2g of water.
Filter drier selection requirements:
The molecular diameter of the refrigerant is larger than the molecular diameter of the desiccant and the diameter of the water molecule. That is to say, the filter pore size of the molecular sieve desiccant is larger than the diameter of the water molecule, but smaller than the molecular diameter of the refrigerant and engine oil.
Requirements of R134A: R134A is insoluble in mineral oil, it uses ester oil. Compared with R12 refrigerant, it is non-toxic, non-flammable and environmentally friendly. Thermal performance is close to r12. Disadvantages: Easy to absorb water, which requires higher water and system cleanliness. . It is required to choose XH-7 or XH-9 dry filter. While the conventional filter absorbs water, it also absorbs part of the 134A refrigerant molecules. Therefore, special desiccants must be used for freezers that use 134A refrigerant. The filter pore size of 134A refrigerant desiccant is smaller than that of R12. Moreover, in order to speed up the water absorption rate of the desiccant, the amount of desiccant used is increased by 30%-50%, so if you can only use the market general filter in the 134A system, it is recommended to increase the amount of desiccant in two series, and the success rate of treating ice blocking is higher! !
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