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Diaphragm pump

Inactive Publication Date: 2010-01-21
ROYAL APPLIANCE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]According to one aspect, a diaphragm pump comprises a housing, a motor supported by the housing, a drive assembly operably connected to the motor and a wobble plate operably connected to the drive assembly. The motor includes a drive shaft defining a rotational axis. The wobble plate orbits about the rotational axis of the drive shaft. The drive assembly includes a reduction gear assembly and a drive member connected to the gear assembly. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.
[0005]According to another aspect, a diaphragm pump comprises a housing and a generally small, lightweight motor supported by the housing. The motor includes a drive shaft defining a rotational axis. A drive assembly is operably connected to the motor. The drive assembly includes a reduction gear assembly including a planetary gear train having a plurality of compound gears and a ring gear. A wobble plate is rotatably connected to the gear assembly. The wobble plate orbits about the rotational axis of the drive shaft. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.

Problems solved by technology

However, the use of the large motors increases the weight, size and cost of the diaphragm pumps.

Method used

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Embodiment Construction

[0012]It should, of course, be understood that the description and drawings herein are merely illustrative and that various modifications and changes can be made in the structures disclosed without departing from the present disclosure. It will also be appreciated that the various identified components of the diaphragm pump disclosed herein are merely terms of art that may vary from one manufacturer to another and should not be deemed to limit the present disclosure. All references to direction and position, unless otherwise indicated, refer to the orientation of the diaphragm pump illustrated in the drawings and should not be construed as limiting the claims appended hereto.

[0013]Referring now to drawings, wherein like numerals refer to like parts throughout the several views, a diaphragm pump 100 according to the present disclosure is illustrated. With reference to FIGS. 1-3 and 7, the diaphragm pump 100 comprises a housing 102, a motor 104 supported by the housing, a drive assemb...

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Abstract

A diaphragm pump comprises a housing, a motor supported by the housing, a drive assembly operably connected to the motor and a wobble plate operably connected to the drive assembly. The motor includes a drive shaft defining a rotational axis. The wobble plate orbits about the rotational axis of the drive shaft. The drive assembly includes a reduction gear assembly and a drive member connected to the gear assembly. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority from U.S. Provisional Patent Application Ser. No. 611082,370 filed Jul. 21, 2008; which provisional patent application is expressly incorporated herein by reference, in its entirety.BACKGROUND[0002]Exemplary embodiments herein relate to a diaphragm pump for a hydraulic system. Diaphragm pumps possess many advantages and are widely used. Generally, the diaphragm pump defines a variable volume chamber by using a space between a pump casing and a diaphragm, which is controlled by a wobble plate. Typically, the wobble plate, driven by a shaft, operates to lift away from and then compress against the diaphragm in a wavelike or peristaltic motion. An inlet and an outlet are provided through the pump casing with one-way valves for preventing backflow. These cooperate with the diaphragm to create an appropriate variable pumping chamber with a peristaltic action. The conventional diaphragm pumps require a re...

Claims

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Application Information

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IPC IPC(8): F04B43/04
CPCF04B43/02F04B43/04F04B43/026
Inventor CONNER, MICHAEL
Owner ROYAL APPLIANCE MFG