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The refrigeration system is a general name of the refrigerant flowing through the equipment and pipelines, including compressors, condensers, throttle devices, evaporators, pipes, and accessory equipment, which are the main constituent systems of air conditioning equipment, cooling, and refrigerated equipment.
Refrigeration system blocking fault has a variety of forms such as ice blocked, dirty and oil blocked, and the unified troubleshooting of clogging is: the hand touch the condenser is not hot, the evaporator does not cool, the compressor operation is normal, and the pressure gauge is connected On the bypass feeding valve, the indication is negative pressure, the outdoor machine is light, and there is no fluid in the evaporator.
Reasons and faults of ice blockers
The occurrence of ice blocked fault is mainly due to the excessive moisture in the refrigeration system. With the continuous circulation of the refrigerant, the water in the refrigeration system gradually concentrates at the capillary exit, and since the capillary exit is the lowest, the water is a ice and gradually Increased, to a certain extent, completely blocking the capillary, the refrigerant cannot be circulated, the refrigerator is not refined.
The main source of moisture in the refrigeration system is that the inner insulation paper in the compressor contains moisture, which is the main source of moisture in the system. In addition, the cooling system and the wire remaining moisture due to insufficient dryness; the refrigerator oil and refrigerant contains more than the allowed moisture; during the assembly or maintenance process, the pipeline is in the development state, causing moisture in the air The motor is absorbed by the insulating paper and the refrigerator oil. Due to the above reasons, the water content of the refrigeration system exceeds the amount of refrigeration system, and thus ice blocked. The refrigerant cannot be circulated on one side, and the refrigerator cannot be refined. On the other hand, the moisture is chemically reacted with the refrigerant, producing hydrochloric acid and hydrogen fluid, resulting in corrosion of metal pipelines and components, and even results in motor windings. Insulation is damaged, and the refrigerating oil can also cause the oil to deteriorate, affect the lubrication of the compressor. Therefore, the moisture within the system must be controlled at a minimum.
The performance of the refrigeration system has normal steps in the initial stage, the evaporator, the heat dissipation of the condenser, the unit operation is stable, and the refrigerant activity in the evaporator is clear and stable. With the formation of ice blocked, the airflow can gradually become weak, the time is intermittent, and the airflow disappears when the blockage is severe, and the refrigerant circulation is interrupted. The condenser gradually became cold. Due to blockage, the exhaust pressure is increased, the machine operation is increased, and there is no chiller in the evaporator. The frost area gradually becomes small, and the temperature is gradually increased. At the same time, the capillary temperature rises together, so the ice cube begins to dissolve. Refrigerants start recycling again. After a period of time, the ice occurs again, forming a periodic pass-blocking.
Causes and faults of dirty blocking
The formation of dirty faults is due to excessive impurities in the refrigeration system. The source of impurities in the system is mainly: dust, metal chips in the manufacturing process of the refrigerator, the oxide layer of the inner wall surface in the pipe welding, and each component is not cleaned during the processing, and the pipeline is not severe and dust. In the tube, the refrigeration oil and refrigerant contain impurities, drying the desiccant powder in the filter in the filter. These impurities and powders flow through the dried filter, and when the dried filter impurities, some small dirt and impurities are brought into a capillary in a refrigerant having a high flow rate, in the capillary bending section. Large resistance is stacked, and the resistance is getting bigger and larger, making impurities more likely to retention until the capillary is blocked, and the refrigeration system cannot be circulated. In addition, the distance from the filter in the drying filter is too close to the dirty failure; it is also easy to cover the capillary tube in the weld capillary and drying filter.
After the refrigeration system occurs, since the refrigerant cannot be circulated, the compressor is continuously operated, the evaporator is not cold, the condenser is not hot, the compressor housing is not hot, and the no gas in the evaporator is listened. When some is partially blocked, the evaporator has cool or cold feelings, but not. Touch the dry filter and the outer surface of the capillary, feel cool, frost, even a layer of white cream. This is because the refrigerant flows through a micro-blocked filter or capillary, generates a throttle step, thereby generating expansion, vaporizing, heat absorption of refrigerant flowing over clogged, resulting in conjugation or junction Frost.
The difference between ice blocked and dirty: I can restore cooling after a while, forming a child, blocked, blocked, and passing the cycle repetition. It can't be refined after dirtying.
In addition to capillary occurs, if the system impurities are large, the drying filter will gradually block the drying filter, which is limited due to the limited capacity of the dirt and impurities due to the constant stack of impurities.
In addition to capillary occurs, if the system impurities are large, the drying filter will gradually block the drying filter, which is limited due to the limited capacity of the dirt and impurities due to the constant stack of impurities.
The refrigeration system is a general name of the refrigerant flowing through the equipment and pipelines, including compressors, condensers, throttle devices, evaporators, pipes, and accessory equipment, which are the main constituent systems of air conditioning equipment, cooling, and refrigerated equipment.
Refrigeration system blocking fault has a variety of forms such as ice blocked, dirty and oil blocked, and the unified troubleshooting of clogging is: the hand touch the condenser is not hot, the evaporator does not cool, the compressor operation is normal, and the pressure gauge is connected On the bypass feeding valve, the indication is negative pressure, the outdoor machine is light, and there is no fluid in the evaporator.
Reasons and faults of ice blockers
The occurrence of ice blocked fault is mainly due to the excessive moisture in the refrigeration system. With the continuous circulation of the refrigerant, the water in the refrigeration system gradually concentrates at the capillary exit, and since the capillary exit is the lowest, the water is a ice and gradually Increased, to a certain extent, completely blocking the capillary, the refrigerant cannot be circulated, the refrigerator is not refined.
The main source of moisture in the refrigeration system is that the inner insulation paper in the compressor contains moisture, which is the main source of moisture in the system. In addition, the cooling system and the wire remaining moisture due to insufficient dryness; the refrigerator oil and refrigerant contains more than the allowed moisture; during the assembly or maintenance process, the pipeline is in the development state, causing moisture in the air The motor is absorbed by the insulating paper and the refrigerator oil. Due to the above reasons, the water content of the refrigeration system exceeds the amount of refrigeration system, and thus ice blocked. The refrigerant cannot be circulated on one side, and the refrigerator cannot be refined. On the other hand, the moisture is chemically reacted with the refrigerant, producing hydrochloric acid and hydrogen fluid, resulting in corrosion of metal pipelines and components, and even results in motor windings. Insulation is damaged, and the refrigerating oil can also cause the oil to deteriorate, affect the lubrication of the compressor. Therefore, the moisture within the system must be controlled at a minimum.
The performance of the refrigeration system has normal steps in the initial stage, the evaporator, the heat dissipation of the condenser, the unit operation is stable, and the refrigerant activity in the evaporator is clear and stable. With the formation of ice blocked, the airflow can gradually become weak, the time is intermittent, and the airflow disappears when the blockage is severe, and the refrigerant circulation is interrupted. The condenser gradually became cold. Due to blockage, the exhaust pressure is increased, the machine operation is increased, and there is no chiller in the evaporator. The frost area gradually becomes small, and the temperature is gradually increased. At the same time, the capillary temperature rises together, so the ice cube begins to dissolve. Refrigerants start recycling again. After a period of time, the ice occurs again, forming a periodic pass-blocking.
Causes and faults of dirty blocking
The formation of dirty faults is due to excessive impurities in the refrigeration system. The source of impurities in the system is mainly: dust, metal chips in the manufacturing process of the refrigerator, the oxide layer of the inner wall surface in the pipe welding, and each component is not cleaned during the processing, and the pipeline is not severe and dust. In the tube, the refrigeration oil and refrigerant contain impurities, drying the desiccant powder in the filter in the filter. These impurities and powders flow through the dried filter, and when the dried filter impurities, some small dirt and impurities are brought into a capillary in a refrigerant having a high flow rate, in the capillary bending section. Large resistance is stacked, and the resistance is getting bigger and larger, making impurities more likely to retention until the capillary is blocked, and the refrigeration system cannot be circulated. In addition, the distance from the filter in the drying filter is too close to the dirty failure; it is also easy to cover the capillary tube in the weld capillary and drying filter.
After the refrigeration system occurs, since the refrigerant cannot be circulated, the compressor is continuously operated, the evaporator is not cold, the condenser is not hot, the compressor housing is not hot, and the no gas in the evaporator is listened. When some is partially blocked, the evaporator has cool or cold feelings, but not. Touch the dry filter and the outer surface of the capillary, feel cool, frost, even a layer of white cream. This is because the refrigerant flows through a micro-blocked filter or capillary, generates a throttle step, thereby generating expansion, vaporizing, heat absorption of refrigerant flowing over clogged, resulting in conjugation or junction Frost.
The difference between ice blocked and dirty: I can restore cooling after a while, forming a child, blocked, blocked, and passing the cycle repetition. It can't be refined after dirtying.
In addition to capillary occurs, if the system impurities are large, the drying filter will gradually block the drying filter, which is limited due to the limited capacity of the dirt and impurities due to the constant stack of impurities.
In addition to capillary occurs, if the system impurities are large, the drying filter will gradually block the drying filter, which is limited due to the limited capacity of the dirt and impurities due to the constant stack of impurities.