As the key part of the refrigeration unit of the freezer, the industrial air cooler should play the role of reducing the temperature of the freezer immediately. The high efficiency of the industrial air cooler to produce more or less immediately to the temperature of the freezer and its storage quality caused a key harm. Nova ice application technology elite team found that in the specific application, there are many factors that harm the high efficiency of industrial cooling fan production, in which air conditioning evaporator frosting is one of the key elements, but also a crucial problem that can not be avoided in specific application.

In the actual standard, there is no moisture in the air, so when the temperature of the industrial air cooler is less than 0℃ and less than the gas leakage point, the surface of the evaporator in the air conditioner is gradually frosting, with the improvement of the running time, the frost layer will be thicker and thicker. Thicker frost layer will cause two key problems: one is the improvement of heat conduction and heat transfer coefficient, the cooling capacity in the evaporator coil of air conditioning can not be reasonably transmitted to the freezer across the wall thickness and frost layer; Another problem: the thick frost layer produces a lot of air resistance for the fan motor, resulting in a reduction in the exhaust volume of the industrial air cooler, which also reduces the heat transfer efficiency of the industrial air cooler.

Application of technical elite team on the following many industrial air cooler (air conditioning evaporator) frosting problem came to some countermeasures:

1. The air humidity in the freezer is very high, causing serious frosting in the air conditioning evaporator

Frost cause: when the freezer is replenishment, the door of the freezer is often switched on and off, and each time the door is opened for a long time, resulting in a lot of warm air constantly invading the warehouse.

Proposed countermeasures: the door curtain or air curtain machine at the insulation door is refit to block the invasion of warm air from the outside world, and at the same time, the standard freezer is applied to ensure the immediate closure of the store; In addition, it is suggested to select large area distance and variable piece distance model specifications when selecting industrial cold air model number, and improve the electric heating device of blower to maintain the safe operation of motor.

Industrial air cooler frost causes and solutions

2. The installation position of industrial air cooler is wrong, causing serious frosting in the evaporator of air conditioner

Frost reason: the industrial air cooler is installed above the insulation door. When the door is opened, if the industrial air cooler has been operating, the warm air outside the freezer is immediately sucked into the industrial air cooler inside, and at the same time, the water vapor is also solidified on the industrial air cooler shell and fan net cover.

Proposed countermeasures: install the industrial air cooler in the part that avoids the insulation door to prevent the outside warm air from being sucked into the industrial air cooler immediately when opening and closing the door.

3. Unclean defrosting causes freezing on the surface of air conditioner evaporator

Frost cause: because of the lack of frost time, coupled with the unscientific part of the frost calibration camera, the air conditioning evaporator will start running when defrosting is not clean. Part of the frost layer of the air conditioning evaporator after several circulation systems becomes ice and increases in accumulation.

Proposed countermeasures: Anodizing frost model specifications -- set defrosting cycle time and defrosting time again, leave enough time for drainage pipes, and check whether the defrosting calibration camera is appropriate; Rinse cream model specifications - adjust the flow of defrosting water and determine whether the tap water pipe is effective, to ensure that each frost part of the air conditioning evaporator is clean and clean.

4. The drainage pipe of industrial air cooler is not made intelligent backwater bend outside the storehouse

Frost cause: part of the drainage pipe of the industrial air cooler is not made intelligent backwater bend outside the overhanging library, resulting in the cooling operation of the library. If the other library is not in use, the warm air of the other library will be sucked into the bottom of the drainage pipe plate of the industrial air cooler to produce frost and freezing.

Proposed countermeasures: A separate intelligent backwater bend must be made outside the outer part of the drainage pipe of each industrial cooling fan outspread library plate to avoid the invasion of warm air from the outside during cooling operation.