Temperature data input method for hot gas defrosting group control

Abstract

The invention provides a temperature data input method for hot gas defrosting group control. According to the temperature data input method, a conventional hardware platform with six ways of temperature input point locations and four evaporators form a defrosting group, and the equipment cost is reduced. The temperature data input method involves the equipment platform and four evaporators. The six ways of temperature input point locations are reserved on the equipment platform, a fin temperature sensor is arranged in a fin area of each evaporator, totally four fin temperature sensors are arranged, and four ways of temperature input point locations on equipment are connected with corresponding temperature sensors of refrigeration houses corresponding to the four evaporators correspondingly, so that the equipment platform monitors the corresponding house temperature in real time; and then the two ways of temperature input point locations left are connected with an independent first option switch and second option switch correspondingly, the input end of the first option switch is connected with two fin temperature sensors, the input end of the second option switch is connected withthe other two fin temperature sensors, and a periodic switching mode and a continuous online mode are set for the option switches correspondingly.

Description

technical field [0001] The invention relates to the technical field of hot gas defrosting control of cold storage evaporators, in particular to a temperature data input method for hot gas defrosting group control. Background technique [0002] Hot gas defrosting is one of the commonly used defrosting methods in cold storage, and it has the characteristics of energy saving and high efficiency. In practical engineering applications, there are many general-purpose controllers available on the market for a single hot-gas defrosting air cooler. For multiple hot-gas defrosting air coolers, PLC controllers are usually used for programming according to the actual configuration of the project. Affects the duration and cost of the project. [0003] In the existing technology, a maximum of four evaporators are formed into a defrosting group through a group control method, and then the hot gas defrosting is controlled through a hardware platform, which can greatly improve the debugging...

AI Technical Summary

Problems solved by technology

In practical engineering applications, there are many general-purpose controllers available on the market for a single hot-gas defrosting air cooler. For multiple hot-gas defrosting air coolers, PLC controllers are usually used for programming according to the actual configuration of the project. Affects the duration and cost of the project

[0003] In the existing technology, a maximum of four evaporators are formed into a defrosting group through a group control method, and then the hot gas defrosting is controlled through a hardware platform, which can greatly improve the debugging time and save equipment costs; There are many temperature input points. When four evaporators are arranged, if each evaporator is equipped with one storage temperature sensor and one evaporation temperature sensor, a total of eight temperature input points are required, but the current conventional hardware platform only supports six temperature channels at most. Input points, so when four evaporators form a defrosting group, it is necessary to customize a hardware platform with high cost, which makes the entire equipment cost high

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