Static bilge pump

Abstract

A static bilge pump has a body surrounded by a shell, forming a motive plenum therebetween. Inlets in the front of the shell allow a motive fluid to enter the motive plenum. The motive plenum tapers, decreasing in cross-sectional area along with width as it moves toward its aft, and ends at a motive nozzle. The body houses a suction chamber in fluid communication with a suction inlet that is in fluid communication with the bilge of a boat. Ejectors are positioned proximal to and between the motive nozzle and the discharge outlet. When the static bilge pump is exposed to fluid flow from its front to its stern, such as when a boat is in motion, water enters the motive inlets, filling the motive Plenum and acting as a motive fluid. The motive fluid is ejected at high pressure from the motive nozzle, creating suction at the ejectors and discharging the motive fluid as well as liquid with in the suction chamber out the discharge outlet.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. patent application Ser. No. 14 / 316,730 filed on Jun. 26, 2014, which issued on Mar. 21, 2017 as U.S. Pat. No. 9,598,146. This application claims priority to U.S. Provisional Application Ser. No. 61 / 839,847 filed on Jun. 26, 2013, the contents of which are hereby incorporated in their entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not Applicable.NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT[0003]Not ApplicableREFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING APPENDIX SUBMITTED ON A COMPACT DISC AND INCORPORATION-BY-REFERENCE OF THE MATERIAL[0004]Not Applicable.BACKGROUND OF THE INVENTION[0005]Field of Endeavor[0006]The present invention relates to systems and devices for draining the bilge of a vessel in a body of water. More particularly, the invention relates to systems and devices having no moving parts and which may be used to drain a...

AI Technical Summary

Benefits of technology

[0021]It is therefore an object of the present invention to provide a static bilge pump having no moving parts and which may be easily integrated with existing boat hulls.

Problems solved by technology

Since boats were first built, water collecting in the bilge, or the bottom of the interior of the hull, has been a problem.

However, because even when a boat is at rest, it is still subject to wind, current and other forces, such automatic drains often do not remain completely closed while a boat is at rest.

Another difficulty encountered with automatic drains is that they typically include components exterior to the hull.

Pumps, which include bulky devices on the exterior of the hull are thus not desirable.

Because many boats are subjected to harsh conditions, it is not unusual for a bilge pump to become damaged or to cease functioning.

Bilge pumps may require maintenance and may be inefficient.

These substances often wear out when subjected to salt water.

This further complicates maintenance of the system's.

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