Multi-mode temperature adjustment and control device and method

Abstract

The invention provides a multi-mode temperature adjustment and control device and method and belongs to the technical field of liquid nitrogen refrigeration. By means of the multi-mode temperature adjustment and control device and method, the technical problem that in the prior art, temperature adjustment and control cannot be conducted on all nodes on a rapid cooling line is solved. The multi-mode temperature adjustment and control device comprises a fixing bracket, roll shafts and a conveying belt. The conveying belt is connected to the roll shafts in a tensioned manner. The multi-mode temperature adjustment and control device further comprises a liquid nitrogen conveying pipe, a controller and multiple temperature sensors. A main pipe body of the liquid nitrogen conveying pipe is located above the conveying belt, and multiple spray pipes are connected to the main pipe body of the liquid nitrogen conveying pipe. Each spray pipe communicates with the main pipe body of the liquid nitrogen conveying pipe. A solenoid valve is arranged at the connection position of each spray pipe and the main pipe body of the liquid nitrogen conveying pipe. Each temperature sensor is located below the corresponding spray pipe. The temperature sensors and the solenoid valves are each electrically connected with the controller. By means of the multi-mode temperature adjustment and control device, temperature adjustment and control cannot be conducted on all the nodes on the rapid cooling line, and losses of a cold source are reduced.

Description

technical field [0001] The invention belongs to the technical field of liquid nitrogen refrigeration, and relates to a multi-node temperature control device and a control method. Background technique [0002] The quick-cooling and quick-freezing cold chain lines in the prior art all freeze the entire space, and only control the refrigeration of the entire cold chain line for a single cold-chain quick-cooling line, and cannot control the cooling of a cold-chain quick-freezing line. The temperature of each node (that is, different positions on the cold chain quick-freezing line) is regulated, causing most of the cooling capacity to be lost. Since the food is refrigerated, the refrigeration unit has been working at full capacity, and the energy utilization rate is very low. , the cooling loss is also very large. When the thickness and variety of the quick-cooling food are different, a good quick-cooling effect cannot be achieved, and the food quality will also be affected. For ...

AI Technical Summary

Problems solved by technology

[0002] The quick-cooling and quick-freezing cold chain lines in the prior art all freeze the entire space, and only control the refrigeration of the entire cold chain line for a single cold-chain quick-cooling line, and cannot control the cooling of a cold-chain quick-freezing line. The temperature of each node (that is, different positions on the cold chain quick-freezing line) is regulated, causing most of the cooling capacity to be lost. Since the food is refrigerated, the refrigeration unit has been working at full capacity, and the energy utilization rate is very low. , the cooling loss is also very large. When the thickness and variety of the quick-cooling food are different, a good quick-cooling effect cannot be achieved, and the food quality will also be affected. For multiple or multi-layer quick-cooling lines, the existing quick-cooling line The cooling line can only be separated, and multiple quick-cooling lines or multi-layer quick-cooling lines cannot be combined together, so the geographical space required is larger and the energy consumption is larger

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