Vibration-reducing structure for four-compression-chamber diaphragm pump

Abstract

A vibration-reducing structure for compressing diaphragm pump features a pump head body and a diaphragm membrane. The pump head body includes four operating holes, a first curved vibration-reducing positioning structure circumferentially disposed around the upper side of each operating hole, and or a linked four-curve positioning structure that collectively extends around all of the operating holes. The diaphragm membrane includes four equivalent piston acting zones and second curved vibration-reducing position structures situated at positions corresponding to the positions of the first curved vibration-reducing positioning structures. The first positioning structures in the pump head body, which may be grooves, slots, perforations, or protrusions, mate with the corresponding second positioning structures in the diaphragm membrane to reduce the moment arm generated during pumping by movement of the diaphragm membrane, which may be protrusions, grooves, slots, or perforations, thereby generating less torque to decrease the strength of vibrations and vibration noise.

Description

[0001]This application claims the benefit of provisional U.S. Patent Application No. 61 / 000,622, filed May 20, 2014, and incorporated herein by reference.FIELD OF THE PRESENT INVENTION[0002]The present invention relates to a vibration-reducing structure for a four-compression-chamber diaphragm pump, and particularly to a structure that can reduce the vibration strength of the pump so that the annoying noise incurred by the consonant vibration with the housing of an RO purification system is eliminated when the vibration-reducing structure is installed on the water supplying apparatus in either a house, recreational vehicle, or mobile home.BACKGROUND OF THE INVENTION[0003]Conventional compressing diaphragm pumps of the type used with a RO (Reverse Osmosis) purifier or RO water purification system, and which are popularly installed on the water supplying apparatus of houses, recreational vehicles or mobile homes, come in various types. Other than the specific type disclosed in U.S. Pa...

AI Technical Summary

Benefits of technology

The present invention is a vibration-reducing structure for a diaphragm pump. It features a pump head body with curved grooves, slots, or perforated segments, and a diaphragm membrane with curved protrusions or sets of protrusions. The curved protrusions on the pump head body fit tightly into the curved grooves on the membrane, creating a short moment arm that generates less torque. This reduces vibration strength and prevents noise from resonant shaking. The technical effect of this invention is to create a more stable and efficient diaphragm pump with reduced vibration and noise.

Problems solved by technology

Referring to FIGS. 12 through 13, a serious vibration-related drawback has long existed in the above-described conventional four-compression-chamber diaphragm pump.

However, the practical vibration suppressing efficiency of the foregoing cushion base 100 with wing plates 101 and rubber shock absorber 102 only affects the primary direct vibration, while reducing overall vibration only to a limited degree because the primary direct vibration causes a secondary vibration to occur as a result of resonant shaking of the housing C. The resonant shaking causes the overall vibration noise of the housing C of the reverse osmosis purification unit to become stronger.

In addition to the drawback of increasing overall vibration noise of the housing C, a further drawback occurs in that the water pipe P connected to the water outlet orifice 22 of the pump head cover 20 will synchronously shake in resonance with the primary vibration described above (as indicated by the broken-line depictions of water pipe P in FIGS. 14 and 14a).

This synchronous shaking of the water pipe P will result in still further drawbacks by causing other rest parts of the conventional compressing diaphragm pump to simultaneously shake.

As a result, after a certain period, water leakage of the conventional compressing diaphragm pump will occur due to gradual loosening of the connection between water pipe P and water outlet orifice 22, as well as gradual loosening of the fit between other parts affected by the shaking

The additional drawbacks of overall resonant shaking and water leakage in the conventional four-compression-chamber diaphragm pump cannot be solved by the conventional way of addressing the foregoing primary vibration drawback.

How to substantially reduce all the drawbacks associated with the operating vibration of the four-compression-chamber diaphragm pump has become an urgent and critical issue.

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