A device and method for keeping evaporator working without frost

Abstract

The invention provides a device and a method for keeping evaporator frostless work. A liquid collecting device is connected with a main circulation pump through a solution pipeline. The other end of the main circulation pump is connected with a main circulating pipeline, and the main circulating pipeline is further connected with a main sprayer and a regulating valve. The regulating valve is connected with a preheater through a dilute solution pipeline, the other end of the preheater is connected with a water dialysis device through a hot solution pipeline, and the other end of the water dialysis device is connected with an auxiliary circulation pump through a concentrated solution pipe. A dialysed water pipe and a dialysed water storage tank are arranged at the lower part of the water dialysis device. The auxiliary circulation pump is further connected with an auxiliary sprayer through an auxiliary loop. A coolant outlet and a coolant inlet are respectively formed in the two ends of an evaporation heat exchanger. The effects of simplifying system, continuously working, efficiently absorbing sensible heat and latent heat and improving the work of the evaporator are realized. The system is simple, sensible heat and latent heat are absorbed under the help of a sprinkling mode, the heat exchange efficiency is high, the application range is wide, and the purpose of preventing the evaporator from frosting is achieved by using an original sprinkling system.

Description

technical field [0001] The invention relates to a device and a method for keeping an evaporator working without frost. Background technique [0002] At present, the evaporators working in large-scale cold storage and the evaporative heat exchangers working outdoors in winter generally encounter the problem of frosting. The formation of frost will have a great impact on the heat transfer performance of the evaporator and the pressure drop on the air side. . Commonly used defrosting methods are as follows: [0003] 1) Manual defrosting. The method in which the operator holds a clearing tool to directly remove the condensation on the surface of the evaporator is called manual defrosting, which is generally applicable to large refrigerators. The characteristic of artificial defrosting is that the defrosting does not melt, and the evaporator can still work normally during the defrosting process, which basically does not affect the constant temperature of the warehouse. Howeve...

AI Technical Summary

Problems solved by technology

However, due to the need for compressed air, the defrosting process also consumes more power, and the high price of the device is also a major disadvantage.

[0008] To sum up, neither heating defrosting nor melting defrosting can work continuously. Once frosting starts, the heat exchange efficiency will drop rapidly, the energy consumption of the defrosting process will be large, and the complexity of the system will increase.

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