Multi-compressor air conditioner control method and system

A multi-compressor and control method technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of low efficiency of dual-compressor air conditioners, achieve convenient equipment status, and prolong service life Effect

Inactive Publication Date: 2011-06-29
DONGGUAN GUANGDA REFRIGERATION
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a multi-compressor air conditio...

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  • Multi-compressor air conditioner control method and system
  • Multi-compressor air conditioner control method and system
  • Multi-compressor air conditioner control method and system

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Embodiment Construction

[0032] The multi-compressor air conditioner control system and method of the present invention are used to control an air conditioner including multiple compressors, mainly through a PLC program communicating with a host computer.

[0033] Such as figure 1 Shown is a schematic structural diagram of an embodiment of the multi-compressor air-conditioning control system of the present invention. In this embodiment, the system includes a temperature sensor 14 for measuring the chilled water return temperature / cooling water return temperature, an execution unit 11, a temperature setting unit 15, and at least two sets of compressors 12, 13 (only Two sets of compressors are shown, the invention can be applied in air conditioners with more compressors). The air conditioner itself includes a condenser sequentially connected to the compressor, a dry filter, an evaporator, a chilled water outlet pipe and a chilled water return pipe arranged on the condenser, and the like. The execution...

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Abstract

The invention relates to a multi-compressor air conditioner control method which comprises the following steps: a, judging whether the absolute value of difference between the first temperature measured by a temperature sensor and the set temperature set by a temperature setting unit exceeds a first threshold, and if the absolute value exceeds the first threshold, executing step b; b, starting one compressor and accumulating the operation time of the compressor; judging whether the absolute value of difference between the second temperature measured by the temperature sensor and the set temperature set by the temperature setting unit exceeds a second threshold, and if the absolute value exceeds the second threshold, executing step c, wherein the second threshold is greater than the first threshold; and c, starting another compressor and accumulating the operation time of the compressor. The invention also relates to a corresponding control system. According to the invention, the working states of multiple compressors are adjusted by detecting the backwater temperature of chilled water in real time, thus the service life of equipment is prolonged on the basis of maintaining the reliable work of the system.

Description

technical field [0001] The present invention relates to the field of air conditioners, and more specifically, to a method and system for controlling an air conditioner with multiple compressors. Background technique [0002] The traditional air conditioner uses a single-compressor refrigeration system, which has many shortcomings. For example, long-term operation of a single unit will cause mechanical fatigue of the compressor, thereby shortening the service life of the compressor; a single compressor system cannot be adjusted according to ambient temperature and load changes. Adjust accordingly. [0003] Existing high-performance air conditioners often use dual compressors to work. However, when these dual-compressor air conditioners are running, the efficiency of each compressor is low when they work together. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a multi-compressor air conditioner control method an...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 方沛明莫理光靳晓洋
Owner DONGGUAN GUANGDA REFRIGERATION
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