Motor direct drive air pump and related applications thereof

Abstract

A motor direct drive air pump comprises a housing, a first shaft, and a second shaft. The housing is formed with a left space and a right space; one of the spaces is a compression chamber having an air inlet and an air outlet; the other space has a transmission chamber and a driving chamber; stators are disposed in the driving chamber. A first shaft is disposed through a central partition of the housing; a first impeller is embedded at a portion of the first shaft located in the compression chamber, while a first gear is embedded at a portion of the first shaft located in the transmission chamber, and rotors are embedded at a portion of the first shaft located in the compression chamber. A second shaft is disposed through the central partition of the housing; a second impeller is embedded at a portion of the second shaft located in the compression chamber, while a second gear is embedded at a portion of the second shaft located in the transmission chamber, and the second impeller and the second gear are respectively coupled to the first impeller and the first gear. Therefore, a power outputted from a motor directly drives the first and the second impellers and allow the air pump to operate, without any additional coupling.

Description

FIELD OF THE INVENTION[0001]The invention relates to an air pump, and more particularly to a motor direct drive air pump having a motor directly outputs power to drive the air pump, and the outputted power does not need to go through an additional coupling.DESCRIPTION OF PRIOR ART[0002]A conventional ventilation device usually comprises a housing with an air inlet and an air outlet, and has therein a pair of impellers that may be coupled to each other and rotate toward opposite directions, respectively. When one of the impellers passes by the air inlet, a fixed amount of air is captured between the impellers and the housing, then transported and allowed to exit via the air outlet by the rotating impellers. As the rotation of the impellers is repeated, the ventilation device may put out a fixed proportion of air.[0003]A spiral pump of prior arts having a driving valve and a piston was disclosed in the U.S. Pat. No. 4,772,187. A plurality of arc-shaped surfaces are externally disposed...

AI Technical Summary

Benefits of technology

[0008]In light of the aforesaid problems, an air pump with smaller physical size and less mechanical parts is required, and the invention has proposed a novel and more advanced motor direct drive air pump in response to such requirement. The motor direct drive air pump of the invention comprises a housing, a first shaft, and a second shaft. The housing has a left cover, a right cover, and a central partition to form a left space and a right space, wherein one of the spaces is a compression chamber having at least an air inlet and an air outlet openly disposed on lateral walls thereof; the other space has a transmission chamber and a driving chamber, and stators are disposed in the driving chamber. Moreover, the first shaft is fittingly disposed through the central partition of the housing; a first impeller is embedded at a portion of the first shaft located in the compression chamber; a first gear is embedded at a portion of the first shaft located in the transmission chamber, and a rotor is embedded at a portion of the first shaft located in the driving chamber. Furthermore, the second shaft is fittingly disposed through the central partition of the housing; a second impeller is embedded at a portion of the second shaft located in the compression chamber; a second gear is embedded at a portion of the second shaft located in the transmission chamber, and the second impeller and the second gear are respectively coupled to the first impeller and the first gear. Therefore, a power outputted from a motor may directly drive the first impeller and the second impeller in the compression chamber and allow the air pump to operate, without needing to go through an additional coupling.

[0011]Still another objective of the invention is to propose a motor direct drive air pump having less transmission loss over forces generated from a motor.

[0014]Still another objective of the invention is to propose a motor direct drive compressor having less transmission loss over forces generated from a motor.

[0017]A further objective of the invention is to propose a motor direct drive vacuum pump having less transmission loss over forces generated from a motor.

Problems solved by technology

This renders the overall size of the ventilation device needlessly large, and results in the fact that the ventilation device must be built with an excessive number of mechanical parts, thus the ventilation device not only occupies a lot of physical space, but also costs more to manufacture.

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