Shaftless drive mute booster pump and its realization method

Abstract

The invention discloses a shaftless driven silent booster pump and a realization method. The shaftless drive silent booster pump includes: a pump casing; a stator assembly integrated with the pump casing; a plurality of impeller assemblies installed in the cavity surrounded by the stator assembly; used to communicate A plurality of guide vanes of the plurality of impeller assemblies, each guide vane is installed at an output end of a corresponding impeller assembly; and a controller assembly for controlling the rotation speed and power of the stator assembly according to the water pressure data at the pump outlet. Since the present invention directly transmits power to each impeller, it can transmit power more efficiently.

Description

technical field [0001] The invention relates to a household pipeline booster pump, in particular to a shaftless driven silent booster pump for household pipelines without a rotor drive shaft and a realization method. Background technique [0002] The current household variable frequency booster pumps usually have the following characteristics: 1. The conventional electric pump design is divided into two parts, the induction motor + the pump, and then the motor power is transmitted to the pump blades through the shaft in series. 2. The motor and the pump need to be isolated by a friction-closed mechanical seal to prevent water from entering the motor. 3. The motor needs to be supported by ball bearings, which will generate rolling friction noise when rotating, and wear the balls at the same time. 4. The high-speed rotating blades throw the water out, which acts on the wall of the pump body to generate impact, and at the same time, noise will be generated with the generation ...

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Problems solved by technology

3. The motor needs to be supported by ball bearings, which will generate rolling friction noise when rotating, and wear the balls at the same time

4. The high-speed rotating blades throw the water out, which acts on the wall of the pump body to generate impact, and at the same time, noise will be generated with the generation and rupture of cavitation. If these sounds are not shielded, it will affect the user experience

5. The power density and efficiency of traditional induction motors are relatively low. Under the same power, the volume is larger than that of permanent magnet motors, and consumes a lot of materials such as steel, copper, and aluminum.

[0006] 3. Induction motor has low power density, low efficiency, large volume and waste of materials

[0007] 4. When the unshielded electric pump is working, the water flow hits the wall at high speed, and the noise caused by cavitation and rupture

[0008] 5. The ball bearing supporting the motor shaft has poor dustproof and waterproof performance, and high-speed rotation causes rolling friction and wear of the balls, resulting in bearing noise

[0009] 6. Separately designed inverters, induction motors, and pumps lead to poor system integration and large volume

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