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Centralized control method of variable load output multi-refrigeration-house refrigerating system of refrigerating unit

A refrigeration unit and centralized control technology, which is applied in household refrigeration equipment, lighting and heating equipment, household appliances, etc., can solve the problems of reduced energy efficiency ratio of compressors, affecting service life, and low evaporation pressure, so as to improve energy efficiency ratio, Effect of improving service life and reducing energy consumption

Active Publication Date: 2012-10-10
YANTAI TONGDA REFRIGERATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent start and stop of the compressor will affect its service life and increase energy consumption
[0004] In the case of multiple cold storages with unequal loads, when the minimum load cold storage operates alone, the cooling capacity of the compressor is greater than the load of the cold storage, which will cause the evaporation pressure to be too low, resulting in a decrease in the energy efficiency ratio of the compressor

Method used

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  • Centralized control method of variable load output multi-refrigeration-house refrigerating system of refrigerating unit

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Embodiment Construction

[0016] The steps of the present invention are:

[0017] 1. Temperature collection method:

[0018] The temperature signal of each cold storage is collected by the temperature sensor and transmitted to the controller;

[0019] 2. Control method:

[0020] The temperature of all the controlled cold storages is transmitted to the controller; the controller compares the temperature data of each cold storage with the set temperature range. The temperature is analyzed and judged, and the command is output to make the cold storage with the highest temperature, which is called the second cold storage to run refrigeration; when the second cold storage reaches the set stop temperature and stops running, the controller analyzes and judges the temperature of other cold storages again, The output command makes the cold storage with the highest temperature run for cooling; proceed in sequence until the first cold storage reaches the set stop temperature, and the controller controls the fir...

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Abstract

The invention relates to a centralized control method of a varying load output multi-refrigeration-house refrigerating system of a refrigerating unit. The method is characterized by collecting temperature signals and a controller (comprises a PLC (programmable logical controller), a micro computer controller and an industrial personal computer) of each refrigeration house through a temperature sensor; outputting the control signals through the processing of the controller; and displaying the temperature of the refrigeration house and the running state of a device. The energy efficiency ratio of a compressor is improved, the frequent starting of the compressor is avoided, the energy consumption is reduced, and the service life of the compressor is improved.

Description

technical field [0001] The invention relates to a centralized control method for a refrigerating system with variable load output of a refrigerating unit and multiple cold storages. Background technique [0002] When the compressor is running at low load, the energy efficiency ratio decreases, resulting in an increase in energy consumption. [0003] According to the existing control method, in a multi-cold storage and multi-energy level refrigeration system, there must be a situation where a certain cold storage operates independently. In this case, when the temperature of the cold storage reaches the upper and lower limits of the set temperature, a single cold storage Refrigeration is frequently turned on and off, causing the compressor to start and turn off frequently. The more the number of cold storages controlled by the refrigeration system, the more serious the frequent startup and shutdown of the compressor. Frequent startup and shutdown of the compressor will affec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D29/00
Inventor 张华东
Owner YANTAI TONGDA REFRIGERATION EQUIP