A water pump and unit operation control method, device and water pump system

Abstract

The invention relates to a water pump and unit operation control method and device and a water pump system. The water pump and unit operation control method comprises the following steps that operation parameter information of a water pump and a unit are acquired before and after water flow switch protection is generated, according to the operation parameter information of the water pump and the unit, the water flow condition is determined when the water flow switch protection is generated, and the operation state of the water pump and the operation state of the unit are controlled according to the water flow condition. By adopting the water pump and unit operation control method, the water flow condition during water flow switch protection can be effectively distinguished, the unit and the water pump are controlled to adopt different operation strategies based on the different water flow conditions, the control method can enable the unit to be started and operate in an anti-freezing mode under the premise that the unit is not damaged, the risk of freezing of the unit in winter is reduced, and the economic loss of users is reduced.

Description

Technical field [0001] The invention relates to the technical field of cold and hot water unit control, in particular to a water pump and a unit operation control method, device and water pump system. Background technique [0002] In order to ensure the water flow for the normal operation of the heat pump unit, the water heater will be equipped with a water flow switch. Some units are configured by themselves while others are installed on the engineering water pipe. The configuration of the water flow switch is only the first step to complete the water flow protection of the unit, and more reasonable and reliable judgment and control are needed to truly protect the unit. At present, there are three main reasons for the protection of the water flow switch: 1) the water flow switch itself is faulty, 2) the water flow of the water system is too small, and 3) the water system is suddenly cut off. [0003] For the control of the unit, the water flow switch protection is generated, and ...

AI Technical Summary

Problems solved by technology

If the waterway is cut off, it is reasonable not to allow it to start and run for the sake of protecting the unit and the water pump, but if the water flow in the system is too small, it is necessary to stop the water pump, especially when the unit needs to prevent freezing and start the water pump. Water flow switch protection will appear unreasonable

[0004] If the protection is caused by the failure of the water flow switch itself, it is actually a misjudgment to execute the shutdown of the unit at this time. This misjudgment will cause the unit to fail to start the antifreeze operation and cause the unit to freeze. Therefore, for the protection of the water flow switch, A new and more reasonable control method needs to be proposed to avoid the economic loss caused by this misjudgment

Images