Compressor energy regulating and controlling method of modular cold/hot water unit

A technology of a hot water unit and a control method, which is applied to heating methods, heating and ventilation control systems, household heating, etc., can solve the problems of low control accuracy, frequent start and stop of units, difficulty in meeting control requirements, production process requirements and air conditioning. Comfort and other issues, to achieve the effect of reducing starting loss, reducing frequent starting and stopping, and improving impact

Inactive Publication Date: 2011-11-23
铨高科技(珠海)股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has simple control, low control precision, and the unit is easy to start and stop frequently, so it is difficult to meet the control requirements of variable working conditions, production process requirements and air conditioning comfort

Method used

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  • Compressor energy regulating and controlling method of modular cold/hot water unit
  • Compressor energy regulating and controlling method of modular cold/hot water unit
  • Compressor energy regulating and controlling method of modular cold/hot water unit

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Embodiment Construction

[0050] The invention relates to a method for regulating and controlling the compressor of a modular cold / hot water unit. In this example, if figure 1 As shown, the modular cold / hot water unit includes nine module groups 1 . In the present invention, the number of the module groups 1 cannot be more than 16. The module groups 1 are respectively connected to the total water inlet waterway 2 and the total water outlet waterway 3 according to the serial numbers, each of the module groups 1 includes two compressors 41, 42, and the water inlet end of each module group 1 is set There is a temperature sensor 5, and the temperature sensor 5 is connected with a controller arranged on the periphery, the controller is a programmable controller, and the controller is also connected with a control panel. The adjustable control method for the compressor of the modular cold / hot water unit includes the following steps:

[0051] (a) Set cooling inlet water temperature value Tc, heating inlet wa...

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Abstract

The invention discloses a compressor unit control method, and aims to provide a compressor energy regulating and controlling method of a modular cold/hot water unit, wherein the compressor energy regulating and controlling method is stable for control, high in control precision and capable of effectively ensuring the working life of the unit. In the invention, the running states of compressors are adjusted together, according to the average water inlet temperature and the water inlet temperature variation rate of sequentially numbered module groups between a water inlet path and a water outlet path, and the compressors can be controlled to start and stop according to a certain order at certain time interval, so that the compressors are started and stopped more smoothly and the impact on the grid is reduced; in an operation process, the number of the compressors to be run can be determined more accurately according to the different working conditions, so that the frequently start and stop phenomena of the compressors are reduced and the start loss is reduced; meanwhile, the compressor units can be ensured to meet load demands faster and more accurately, thus the advantages of saving energy and prolonging the lives of units are achieved. The compressor energy regulating and controlling method disclosed by the invention can be widely applied in the cold/hot water unit control field.

Description

technical field [0001] The invention relates to an adjustable control method for compressors of modular cold / hot water units. Background technique [0002] Modular cold (hot) water unit is a large-scale central air-conditioning unit widely used in factories, office buildings, hotels and other occasions. It is composed of multiple air-conditioning units with small cooling capacity, which is convenient for capacity expansion. It is most suitable for occasions with variable loads and has a wide range of applications. The traditional control technology has poor adaptability to different working conditions, and the control lags behind, causing the air conditioning unit to start and stop frequently, even if multiple modular units start at the same time, resulting in a serious impact on the power grid. The traditional control method is multi-stage adjustment. At the set temperature, the temperature deviation is set according to the number of compressors. When the temperature chang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 林国华
Owner 铨高科技(珠海)股份有限公司
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