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Parallel unit energy saving operation adjusting system and control method thereof

A technology for regulating control and regulating systems, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of frequent compressor startup and startup speed that cannot meet the requirements, and achieve the effect of energy-saving performance and reliable performance

Active Publication Date: 2015-11-04
河南千年冷冻设备有限公司
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Problems solved by technology

[0021] The technical problem to be solved by the present invention is that in the existing control method, the start-up speed cannot meet the requirements, and the problem of frequent start-up of the compressor is prone to occur. In order to solve the above-mentioned problem, a method for regulating the energy-saving operation of parallel units

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  • Parallel unit energy saving operation adjusting system and control method thereof
  • Parallel unit energy saving operation adjusting system and control method thereof
  • Parallel unit energy saving operation adjusting system and control method thereof

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Embodiment Construction

[0040] Such as Figure 5 , an energy-saving operation adjustment system for parallel units, the 601 refrigeration unit is connected to the 602 condenser through the pipeline, the 602 condenser is connected to the 603 throttle valve through the pipeline, and the 603 throttle valve is connected to the 604 evaporator through the pipeline (the evaporator is placed on In the cold storage), the 604 evaporator is connected to the 601 refrigeration unit through pipelines; the PLC605 is connected to the unit suction pressure sensor 606 through a cable, and is connected to the touch screen 607 through a cable. After the refrigerant is compressed by the compressor in the 601 refrigeration unit, it becomes a high-temperature and high-pressure superheated steam. After entering the 602 condenser and condensing, it becomes a low-temperature and high-pressure liquid. After entering the 603 throttle valve, it becomes a low-temperature and low-pressure vapor-liquid. The mixture, after bein...

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Abstract

The invention aims to solve the problems in a conventional control method that a starting speed cannot satisfy needs, and a compressor is frequently started; the parallel unit energy saving operation adjusting system and control method thereof comprise a refrigeration unit; the refrigeration unit is connected in sequence with a condenser, a throttle, and an evaporator; the evaporator is connected with the refrigeration unit through an air suction pipeline, and arranged in a refrigeration house; the refrigeration unit is connected with a PLC; the PLC is connected with a touch screen; the air suction pipeline is provided with an air suction pressure sensor connected with the PLC. The parallel unit energy saving operation adjusting system and control method thereof can control the air suction pressure, are suitable for a refrigeration house group, can prevent the problem that end temperature control in the refrigeration system is behind parallel unit cooling performance output, thus preventing frequent starting of the compressor.

Description

technical field [0001] The invention relates to a refrigeration control method, in particular to an energy-saving operation adjustment control method of a parallel unit. Background technique [0002] With the development of the domestic commercial refrigeration market, parallel compressor units have been widely recognized by the market for their good peak-shaving capability and energy-saving features. Especially in recent years, the screw parallel unit has become the first choice for cold sources required in large and medium-sized cold storage and quick-freezing tunnels due to its outstanding features such as large cooling capacity range, efficient and reliable operation. [0003] At present, there are two traditional operation regulation methods for parallel units on the market: neutral region regulation method and linear region regulation method. [0004] Neutral zone adjustment method: [0005] Neutral zone control applies to all loads. According to the operating condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
Inventor 卢永祥路万里
Owner 河南千年冷冻设备有限公司
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