Excessive refrigeration constant-temperature control method of constant-temperature oscillation preservation box of biological products and device thereof

Abstract

The invention provides an excessive refrigeration constant-temperature control method of a constant-temperature oscillation preservation box of biological products and a device thereof and belongs tothe field of preservation of biological products. The control method comprises the following steps: arranging a second box body at the exterior of the preservation box, firstly reducing temperature and cooling circulation air extracted from the preservation box in the second box body, enabling the temperature of the circulation air to be lower than preset temperature, then increasing the temperature by using heating tubes, and increasing the circulation air supplied back to the preservation box to be higher than the preset temperature. Through the control method and the device thereof, an excessive refrigeration constant-temperature control mode is used for avoiding delay of restarting of a compressor; the refrigeration capacity of the refrigeration compressor can be equivalently changed by only adjusting heating power of the heating tubes during adjusting the temperature; the interference of sudden fluctuation of the external temperature can be effectively avoided; the adjustment response speed of the sudden change of the temperature in the preservation box and the temperature control stability are improved; the service lives of operation parts such as the compressor and the likecan be prolonged; and the control method and the device thereof can be widely used in the field of constant-temperature control of the constant-temperature oscillation preservation box of the biological products.

Description

technical field [0001] The invention belongs to the field of biological product preservation, and in particular relates to an overcooling constant temperature control method and device for a biological product constant temperature oscillating storage box. Background technique [0002] Immunological preparations and blood products that are processed from microorganisms, microbial metabolites, animal toxins, human or animal blood or tissues, etc., as immune preparations and blood products for the prevention, treatment, and diagnosis of specific infectious diseases or other related diseases, are commonly referred to as biological products. [0003] The management of biological products should be strictly in accordance with the requirements of storage conditions (usually referring to cold chain transportation during transportation and refrigerated storage during storage), store them, and use them sequentially according to the expiration date. [0004] Taking the refrigerated sto...

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Problems solved by technology

[0006] However, the above-mentioned temperature control and temperature adjustment mode also has obvious disadvantages:

[0007] 1. The stability of temperature control is not high, and it is easily disturbed by sudden changes in external temperature;

[0008] 2. After the compressor reaches the refrigeration temperature and stops, if the outside temperature suddenly rises (for example, when the operator opens the door or lid of the storage box to put in or take out the preserved products), the compressor needs a certain time to start again. Delay, may lead to runaway temperature in the box;

[0009] 3. The principle of the traditional heating and cooling system is to start the compressor when the temperature is higher than 24°C, and start the heating pipe when the temperature is lower than 20°C. In this temperature control mode, the temperature of the air outlet will be higher or lower. 22°C, resulting in uneven temperature inside the box

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