Frost prevention control system

Abstract

The invention discloses a frost prevention control system which comprises a refrigeration house, a terminal displayer, a controller, a differential pressure sensor, a pressure sensor set, a control valve set and at least one gas cylinder, the pressure sensor set comprises at least one pressure sensor matched with the gas cylinders in number, and the control valve set comprises at least one control valve matched with the gas cylinders in number. According to the technical scheme, the low-temperature dry gas stored in the gas cylinder and the working temperature in the refrigeration house are always balanced and tend to be consistent, so that the low-temperature dry gas released by the gas cylinder does not influence normal work of the refrigeration house or the low-temperature dry gas does not influence the normal work of the refrigeration house to the minimum extent; the residual available release time of the gas cylinders, the gas cylinders with the abnormal control valves, the current pressure values of the gas cylinders and other information are sent to the terminal display system through the controller, alarming is conducted in a distinguishing mode according to the abnormal state information of the gas cylinders, intellectualization is greatly improved, and a user can distinguish the states of the gas cylinders in time and carry out replacement or inspection on the gas cylinders in a planned mode.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an anti-frost control system. Background technique [0002] In the medical device industry, relevant policies and laws require blood samples to be processed as soon as possible after collection and stored at a specified temperature of 2-8°C. At present, if the relevant testing experiments cannot be carried out immediately after blood samples are collected, the general practice is to store the blood samples in a refrigerator (or freezer) at a temperature of 2-8°C. Manually take it out from the refrigerator (or freezer) for experiments. If it is necessary to realize the assembly line operation of blood samples, ordinary refrigerators (or freezers) cannot realize automatic storage and retrieval, which obviously cannot meet the requirements. [0003] With the development of science and technology, automated cold storage is gradually being introduced to the market, and for auto...

AI Technical Summary

Problems solved by technology

At present, if the relevant testing experiments cannot be carried out immediately after blood samples are collected, the general practice is to store the blood samples in a refrigerator (or freezer) at a temperature of 2-8°C. Manually take out the refrigerator (or freezer) for experiments. If it is necessary to realize the assembly line operation of blood samples, ordinary refrigerators (or freezers) cannot realize automatic storage and retrieval, which obviously cannot meet the requirements.

[0003] With the development of science and technology, automated cold storage is gradually being introduced to the market, and for automated cold storage, two important problems are faced, namely: 1. Due to the temperature fluctuations in the cold storage, the freeze-thaw process of the stored items in a solid state, especially It is the relatively large fluctuation caused by the opening and closing of the cold storage door during the process of item access, and the quality of the stored items in the cold storage is easily affected by obvious adverse effects; 2. In the area where the internal low temperature environment of the cold storage is combined with the external relatively high temperature environment, it is easy to Cold and heat exchange occurs, causing frost or fog condensation, which affects the continuous and effective operation of the automation device. For example, the automation device at the insulation door of the automatic cold storage is most prone to frost or fog, which makes the corresponding automation device invalid.

In the prior art, as in patents CN206019134U and CN106152679A, air curtains are used at the cold storage door to prevent external air from entering the cold storage. However, the design of the air curtains will allow some air to enter the cold storage. There is still a lot of room for improvement in terms of adjustment methods, control methods, and intelligence of the control system

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