Site News  |   Monitor Keywords  |   Monitor Archive  |   Organizer  |   Account Info  |

Small ozone gas-water mixing pump

Small ozone gas-water mixing pump description/claims

1. Field of Invention

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.

2. Description of Related Arts

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.

High ozone concentration in the air is harmful to human beings. Therefore, the dissolving efficiency of the ozone gas-water mixing equipment should be high, so as to limit the ozone concentration to environmental standards. The mixing pump has high dissolving efficiency, so it is adopted in industry. However, industrial mixing equipment is not applicable to household appliances.

An 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 applicable to the household appliances, such as dish washers and washing machines, etc.

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.

The principle of the present invention is that the rotation of the leaves of the water pump produces intense turbulence vortex, and the bubbles in the water are torn up to produce more and smaller bubbles, so that the ozone is efficiently mixed with and dissolved into water. Accordingly, in order to accomplish the above object, the present invention provides a pump casing, an impeller, and a motor. A permanent magnet A is provided on the impeller. Outside of the pump casing, at a place corresponding to the permanent magnet A, a permanent magnet B is mounted on a device connected to the rotor of the motor, like a rotary plate connected with or integrated with the rotor. The motor drives the permanent magnet B to rotate. According to the character of magnetic poles, that is unlike poles attract and like poles repel, the permanent magnet B pushes the permanent magnet A to rotate through magnetic force, so as to drive the impeller to rotate synchronously. Thus, the motor drives impeller without shafting.

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. In this case, the output power of the water pump of the same kind of product significantly varies. Therefore, for household appliance, the water pump with a driving shaft cannot be adopted.

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.

These and other objectives, features, and advantages of the present invention will become apparent in the following detailed description, the accompanying drawings, and the appended claims.

FIG. 1 is a schematic view of a centrifugal type mixing pump according to the preferred embodiment of the present invention.

FIG. 2 is a schematic view of a vortex type mixing pump according to the above preferred embodiment of the present invention.

FIG. 3 is a schematic view of a vortex type mixing pump according to the above preferred embodiment of the present invention, illustrating the ozone conduit and the water flowing direction.

FIG. 4 is a schematic view of a vortex type mixing pump according to the above preferred embodiment of the present invention, illustrating an application of a brushless DC motor.

FIG. 5 is a side sectional view of a vortex type mixing pump according to the above preferred embodiment of the present invention.

FIG. 6 is a top sectional view at plane A-A of a vortex type mixing pump according to the above preferred embodiment of the present invention.

• Provisional Patent
• Utility Patent

• What Is a Patent?
• What Is a Trademark or Servicemark?
• What Is a Copyright?
• Patent Laws