Control-based water pump self-priming system and self-priming method thereof

Abstract

The invention relates to a water pump gas-exhaust self-priming system and a self-priming method, and solves the problems of air blockage, a complex structure, low efficiency and the like in the priorart. With the adoption of the technical scheme, a rotating speed detection module, a power estimation module and a gas exhaust control module are arranged in a control device, wherein the rotating speed detection module and the power estimation module are used for detecting and analyzing the rotating speed and the power of a motor, and the gas exhaust control module is in signal connection to therotating speed detection module and the power estimation module and used for controlling the motor to enable the water pump to enter a gas exhaust state and exit the gas exhaust state. The control-based water pump self-priming system has the advantages that by means of the rotating speed estimation and power estimation functions of the frequency conversion control module, the gas exhaust state andthe gas exhaust function are achieved, the self-priming structure of the water pump is simplified, and cost is reduced, so that the volume loss caused by a self-priming structure of the water pump isavoided, and thus, the pump is more energy-saving and efficient.

Description

technical field [0001] The invention relates to a water pump exhaust self-priming system and a self-priming method, in particular to a control-based water pump self-priming system and a self-priming method. Background technique [0002] The water pump products used for the purpose of pressurizing household pipelines often have the following two situations in practical applications: [0003] The first situation: there will be an air blockage (gas enters the running water pump) during use, and the performance of the water pump will be greatly reduced when the air blockage occurs, resulting in the situation that the normal pressurization cannot be performed. This situation often occurs when the family suddenly stops water and the water pump is used for the first time after a long period of idleness, which greatly affects the customer's water experience. [0004] Another more common application situation is: the domestic booster pump often needs to draw water from the municipal...

AI Technical Summary

Problems solved by technology

[0005] The existing self-priming implementation methods all rely on the formation of a special structure in the pump to realize the self-priming function, which makes the structure of the pump with self-priming function much more complicated than ordinary water pumps under the same circumstances. The volume and structural cost will increase; due to the volume loss of the return hole and the injection pipe, the efficiency of the water pump will be reduced in comparison to the normal operation.

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