Air-cooled heat pump hot and cold water dispenser system and loading and unloading control method thereof

Abstract

The invention discloses a method for loading and unloading control over an air-cooled heat pump hot and cold water dispenser system and the air-cooled heat pump hot and cold water dispenser system. The method comprises the following steps: detecting a current environment temperature and obtaining a curve of capacity output percentage variation of the air-cooled heat pump hot and cold water dispenser system with temperature during loading and unloading according to the current environment temperature and a set temperature; detecting an outlet water temperature or a return water temperature in real time; obtaining the capacity output percentage of the air-cooled heat pump hot and cold water dispenser system during loading and unloading according to the outlet water temperature / return water temperature and the curve of capacity output percentage variation of the air-cooled heat pump hot and cold water dispenser system with temperature during loading and unloading and obtaining the number of started compressors according to the capacity output percentage; and performing loading and unloading control over the air-cooled heat pump hot and cold water dispenser system according to the number of the started compressors. According to the method, the outlet water temperature can be controlled continuously and accurately, and the problem that the use experience is affected due to excessive outlet water temperature variation caused by loading and unloading delay is effectively solved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a loading and unloading control method of an air-cooled heat pump chiller and hot water machine system and an air-cooled heat pump chiller and hot water machine system. Background technique [0002] The air-cooled heat pump chiller and hot water unit is a small and medium-sized central air conditioner with air as the cold / heat source. It uses refrigerant as the cooling medium to exchange heat with water. cold / heat. [0003] Most of the existing air-cooled heat pump chiller and hot water units control the start-stop and loading and unloading of modules according to the inlet / outlet water temperature. Therefore, it is necessary to accurately grasp the total outlet water / total return water temperature of the air-cooled heat pump chiller The unloading relationship is the key to effectively improve the working efficiency of each module. [0004] In the related technology, b...

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Problems solved by technology

[0004] In the related technology, by detecting the total outlet water temperature and judging whether it is within the loading and unloading interval, and then adjusting the loading and unloading according to the judgment result, this method cannot accurately control the loading and unloading between modules, and can only passively feedback, which has a large delay

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