Small ozone gas-water mixing pump

Abstract

The present invention provides a small ozone gas-water mixing pump. The rotation of the leaves drives water to produce intense turbulence vortex, and the bubbles in the water are torn up producing more and smaller bubbles, so that the gas-water contacting area is enlarged, and the ozone is efficiently dissolved into water. The magnetic force between the permanent magnet A on impeller and the permanent magnet B on motor enables the motor driving the impeller without using shaft, so as to avoid sealing problems of the pump driving shaft. The present invention is simple in structure, low cost, safe, stable, and has high ozone dissolving efficiency, so that it is especially applicable to the household appliances, such as dish washers and washing machines, etc.

Description

BACKGROUND OF THE PRESENT INVENTION[0001]1. Field of Invention[0002]The present invention relates to a gas-water mixing pump, and more particularly to a small gas-water mixing pump used for mixing ozone and water, wherein the motor has an output power less than 50 W.[0003]2. Description of Related Arts[0004]Ozone is an excellent chemical preparation, because it can instantly kill bacteria and viruses. It can also decompose harmful chemical pollutant without creating new pollutants. Therefore, the ozone has been widely applied to large scale water treatment equipment. The household appliances, such as dish washers and washing machines have been widely used, and need to be treated by ozone. However, ozone has not been practically applied to the household appliances. The main reason that ozone has not been applied to the household appliances is that small ozone gas-water mixing equipment, which is efficient, stable and low cost, is not available yet.[0005]High ozone concentration in th...

AI Technical Summary

Benefits of technology

[0007]Another object of the present invention is to provide a small ozone gas-water mixing pump (having a motor output power less than 50 W), which is highly efficient, stable, reliable, small in size, and low cost.

[0010]The present invention uses magnetic force to drive impeller without using a driving shaft, so that the driving shaft sealing problems is avoided, and the maintenance work is easier. The driving structure using magnetic force is simple in structure. If the brushless DC motor is adopted, the permanent magnet B is mounted on the rotary plate of the motor rotor. This structure is safe, simple, and small, so as to be applied to the tiny or small pumps. Without using shaft, the coaxial precision demand between the impeller and the motor shaft is lowered, and the motor and the pump body is easily maintained and replaced. If the impeller is trapped or overloaded, the motor will not be trapped or overloaded, so as to avoid the burning damage of the motor.

Problems solved by technology

Ozone is strong oxidant, which can accelerate the aging of the sealing rubber, so that using rubber gasket to seal driving shaft for a water pump is not reliable, especially when there is ozone in water, and this problem has been existed for a long time.

The ceramic seal ring widely adopted by the present water pump is more reliable than the rubber gasket, but has a complicated structure, costs a lot, and takes up more room; besides, it still partially uses rubber gasket.

For tiny or small pump, shaft sealing produces higher frictional resistance, which consumes a large part of the motor output power.

The frictional resistance of the same kind of product cannot be assured to be the same.

Therefore, for household appliance, the water pump with a driving shaft cannot be adopted.

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