FreshPatents.com Logo
stats FreshPatents Stats
2 views for this patent on FreshPatents.com
2014: 2 views
Updated: August 24 2014
newTOP 200 Companies filing patents this week


    Free Services  

  • MONITOR KEYWORDS
  • Enter keywords & we'll notify you when a new patent matches your request (weekly update).

  • ORGANIZER
  • Save & organize patents so you can view them later.

  • RSS rss
  • Create custom RSS feeds. Track keywords without receiving email.

  • ARCHIVE
  • View the last few months of your Keyword emails.

  • COMPANY DIRECTORY
  • Patents sorted by company.

Follow us on Twitter
twitter icon@FreshPatents

Hydraulic system with modular inserts

last patentdownload pdfdownload imgimage previewnext patent


20140093407 patent thumbnailZoom

Hydraulic system with modular inserts


A hydraulic turbocharger having replaceable, insertable components, including volute inserts, vaned diffuser inserts, nozzle inserts, diffuser inserts, nozzle liners and diffuser liners, that define the internal passageways of a hydraulic turbocharger. By making various components of the turbocharger removably insertable and replaceable, turbochargers can be manufactured in a cost-effective way to maximize efficiency, obtain improved performance and make it easier to operate these types of devices over a wide range of operating conditions. Moreover, the devices can be readily modified while in the field when operating conditions change.
Related Terms: Hydraulic System

USPTO Applicaton #: #20140093407 - Class: 417405 (USPTO) -
Pumps > Motor Driven >Fluid Motor >Rotary Motor

Inventors: Jeff Calkins, Bart Biche, Eric Kadaj, Prem Krish

view organizer monitor keywords


The Patent Description & Claims data below is from USPTO Patent Application 20140093407, Hydraulic system with modular inserts.

last patentpdficondownload pdfimage previewnext patent

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority to and benefit of U.S. Provisional Patent Application No. 61/703,963 entitled “REPLACEABLE HYDRAULIC PATHWAYS”, filed Sep. 21, 2012, which is herein incorporated by reference in its entirety.

BACKGROUND

The present invention relates generally to a hydraulic system.

The pump industry now has available computational fluid dynamic based machine design software that allows pumps to be designed to achieve various performance parameters. The resultant designs require a high degree of dimensional precision to obtain the desired performance characteristics. The challenge is to convert the complex computer design into actual components.

To produce the desired geometry for internal casing components, investment castings are often used. Investment castings use metal molds that produce a wax pattern that in turn is used to make a ceramic mold. The wax pattern is then heated so that the wax melts and is removed which leaves the ceramic mold. The ceramic mold is then used to produce the metal parts for the pump. The ceramic mold produces high quality castings having a good surface finish and dimensional accuracy. However, investment casting tooling is expensive and is best suited to small size, mass produced parts. For custom designed pumps, the parameters of the pump need to match the performance characteristics that are desired. Flexibility in the design is important to achieving the performance objectives and this does not fit well with the use of mass produced parts. Accordingly, custom designed pumps are not a good fit with investment casting technology.

The internal casing components, such as the volute and diffuser, can be machined from solid metal stock. Such machining can produce precise dimension control and a good surface finish. However, the cross section of the volute is limited to parallel wall design configurations as the machining tools must be inserted and removed from the interior of the casing. There is little flexibility in the shape that can be machined under such restrictions. These restrictions on the shape of the internal chamber of the volute significantly limit the performance and efficiency characteristics of a pump produced with this technology.

Sand castings can also be used to produce pump casings. However, sand casting does not work well for the internal casings of small pumps or turbines, as the surface finish produced is not smooth enough for good efficiency. Without the necessary level of efficiency such small pumps and turbines have a difficult time being a competitive product. In addition, the cores that are used to create the internal voids such as the volute can shift during the molding or pouring process. This results in the void area being both axially and radially displaced from the desired position. Such shifting results in uneven flow entrances and a loss of efficiency for the pump. In addition, the surface finish of such a cast pump casing is not as smooth as desired to obtain the best flow characteristics and efficiency. Some of the above deficiencies can be reduced by grinding or sanding operations on the cast casing provided that the required tools can fit into the areas that need further processing.

The present invention overcomes the deficiencies of the prior art and allows the construction of pumps that maximize the efficiency and performance for the pump and allows for the cost effective production of unique one off design and construction of volute flow passages.

BRIEF DESCRIPTION

The present invention relates to improvements to the invention described in U.S. Patent Application Publication 2006/0013707 describing the use of removable components in the construction of hydraulic pumps, turbines and turbochargers to enable such devices to operate effectively over a range of operating conditions and to enable such devices to be modified in the field when operating conditions change.

The present invention includes improvements in the design of removable components in the construction of hydraulic pumps, turbines and turbochargers and more specifically relate to removably insertable components that define the internal hydraulic passageways of a turbocharger including volute inserts, vaned diffuser inserts, nozzle inserts, diffuser inserts, nozzle liners and diffuser liners.

Detailed descriptions of these improvements are set forth below.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:

FIG. 1 is a cross-sectional view of a hydraulic turbocharger comprising a pump section and a turbine section, in accordance with an embodiment;

FIG. 2 is a perspective view of the hydraulic turbocharger of FIG. 1, in accordance with an embodiment;

FIG. 3 is a perspective view of an axially-split volute insert, in accordance with an embodiment;

FIG. 4 is a cross-sectional view of a radially-split volute insert comprising two facing pieces that each have a differently shaped volute, in accordance with an embodiment;

FIG. 5 is a radially-split volute insert comprising three separate pieces, in accordance with an embodiment;

FIG. 6 is the radially-split volute insert of FIG. 5 shown with the pieces fastened together, in accordance with an embodiment;

FIG. 7 is a cross-sectional front elevation view of a one-piece volute insert, in accordance with an embodiment;

FIG. 8 is a cross-sectional side view of a one-piece volute insert, in accordance with an embodiment;

FIG. 9 is a cross-sectional side view of a pump vaned diffuser insert, in accordance with an embodiment;

FIG. 10 is a front elevation view of the pump vaned diffuser insert of FIG. 9, in accordance with an embodiment;

FIG. 11 is a perspective view of the vanes of the pump vaned diffuser insert of FIG. 9, in accordance with an embodiment;

FIG. 12 is a cross-sectional view of a hydraulic turbocharger with an opening in the outlet section that receives a diffuser insert, in accordance with an embodiment;

FIG. 13 is a cross-sectional view of a diffuser insert, in accordance with an embodiment;

FIG. 14 is a side view of the diffuser insert of FIG. 13, in accordance with an embodiment;

FIG. 15 is a cross-sectional view of a hydraulic turbocharger comprising an installed diffuser inserted in the outlet section, in accordance with an embodiment;

FIG. 16 is a cross-sectional view of a hydraulic turbocharger with an opening in the inlet section that receives a nozzle insert, in accordance with an embodiment;

FIG. 17 is a cross-sectional view of a hydraulic turbocharger with an installed nozzle insert, in accordance with an embodiment;

FIG. 18 is a cross-sectional view of a nozzle insert, in accordance with an embodiment;

FIG. 19 is a side view of the nozzle insert of FIG. 18, in accordance with an embodiment;

FIG. 20 is a hydraulic turbocharger with an installed nozzle insert liner, in accordance with an embodiment;

FIG. 21 is a hydraulic turbocharger with an installed diffuser insert liner, in accordance with an embodiment;

FIG. 22 is a perspective view of a two-piece hydraulic turbocharger comprising an outer housing that encloses the pump section and the turbine section and only one end cap, in accordance with an embodiment; and

FIG. 23 is a cross-sectional view of the two-piece hydraulic turbocharger of FIG. 22, in accordance with an embodiment.

DETAILED DESCRIPTION

One or more specific embodiments of the present invention will be described below. In an effort to provide a concise description of these embodiments, all features of an actual implementation may not be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers\' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

When introducing elements of various embodiments of the present invention, the articles “a,” “an,” “the,” and “said” are intended to mean that there are one or more of the elements. The terms “comprising,” “including,” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.

The present invention involves improvements to the invention disclosed in U.S. Patent Application Publication 2006/0013707 the content of which is hereby incorporated by reference into this patent application

The present invention relates to improvements in the design of pumps (e.g. modular pumps), turbines (modular turbines), and modular hydraulic turbochargers and more particularly relates to improvements in the design of removable, insertable components (i.e., inserts, modular inserts) in such devices that enable them to operate more efficiently and under a wide range of operating conditions. These removably insertable i.e., interchangeable) components (i.e., inserts, modular inserts) include pump volute inserts, turbine volute inserts, vane diffuser inserts, diffuser inserts, nozzle inserts, diffuser liners, and nozzle liners. Moreover, each of these components (i.e., inserts, modular inserts) may be one of a plurality of modular inserts that has a different effect on a fluid flow through a pump (e.g., modular pump), a turbine (modular turbine), or modular hydraulic turbocharger. Indeed, each component (i.e., inserts, modular inserts) may be one of many components (i.e., inserts, modular inserts) in a family that are interchangeable used to affect a fluid flow.

The present invention will be understood by those skilled in the art upon review of the following descriptions and the accompanying drawings.

To facilitate the description of the present invention, it will be described in connection with a hydraulic turbocharger utilized for energy recovery that comprises a pump section and a turbine section. However, it should be understood that the present invention is suitable for use with almost any type of pump, turbine or hydraulic turbocharger application. Operating features of such devices are known in the art and will not be described in detail herein.

As shown in FIGS. 1 and 2, a hydraulic turbocharger 1 has an outer housing 2, a first section 3, a turbine end section 4 and a pump end section 5 wherein the turbine end section and pump end section are removably secured to the first section of the outer housing. A securing device such as bolts 6 can be utilized to removably secure the turbine end and pump end sections to the first section of the outer housing 2. The first section 3, the turbine end section 4 and the pump end section 5 of the outer housing 2 define a passageway 7 that extends through the outer housing.

The outer housing 2, comprising the first section 3, turbine end section 4 and pump end section 5 is costly to make and requires significant lead time to design and manufacture. However, the performance requirement for each hydraulic turbocharger can vary depending on the parameters of use that are present in a particular application. This variability in performance characteristic can produce an almost infinite number of performance curves for the hydraulic turbocharger. It is not economically feasible to produce unique components for the outer housing 2 to maximize the efficiency for the hydraulic turbocharger.

The present invention allows a standard outer housing to be designed and produced for a range of potential applications. The turbine impeller 8, pump impeller 9, pump volute insert 10 and turbine volute insert 11 can be individually designed to produce the maximum efficiency for the operational parameters of the hydraulic turbocharger. In most applications the turbine volute insert 11 and pump volute insert 10 are designed to cooperate with the turbine impeller and the pump impeller, respectively, to obtain the desired performance characteristics for the hydraulic turbocharger.

The pump volute and turbine volute inserts can be designed and manufactured to achieve the desired performance characteristics. Since the pump and turbine volute inserts are positioned in the first cavity 12 and second cavity 13 respectively, the pump and turbine volute inserts can be custom designed to optimize the performance of the hydraulic turbocharger without requiring a custom design for the entire hydraulic turbocharger. Additionally, the pump and turbine volute inserts of the present invention are removable so they can be removed and modified, or alternatively replaced with new pump and turbine volute inserts that have new shapes and surface finishes to provide improved performance characteristics.

In several preferred embodiments of the present invention, shown in FIGS. 3-6, the pump volute insert and turbine volute insert each comprise a plurality of pieces fastened together to form individual volute inserts that can be removably positioned in the first cavity 12 or second cavity 13 of the turbocharger. There are several preferred ways to design volute inserts wherein they each comprise a plurality of pieces.



Download full PDF for full patent description/claims.

Advertise on FreshPatents.com - Rates & Info


You can also Monitor Keywords and Search for tracking patents relating to this Hydraulic system with modular inserts patent application.
###
monitor keywords



Keyword Monitor How KEYWORD MONITOR works... a FREE service from FreshPatents
1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored.
3. Each week you receive an email with patent applications related to your keywords.  
Start now! - Receive info on patent apps like Hydraulic system with modular inserts or other areas of interest.
###


Previous Patent Application:
Housing with two housing parts made of plastic
Next Patent Application:
Motor-driven compressor
Industry Class:
Pumps
Thank you for viewing the Hydraulic system with modular inserts patent info.
- - - Apple patents, Boeing patents, Google patents, IBM patents, Jabil patents, Coca Cola patents, Motorola patents

Results in 0.60638 seconds


Other interesting Freshpatents.com categories:
Novartis , Pfizer , Philips , Procter & Gamble ,

###

Data source: patent applications published in the public domain by the United States Patent and Trademark Office (USPTO). Information published here is for research/educational purposes only. FreshPatents is not affiliated with the USPTO, assignee companies, inventors, law firms or other assignees. Patent applications, documents and images may contain trademarks of the respective companies/authors. FreshPatents is not responsible for the accuracy, validity or otherwise contents of these public document patent application filings. When possible a complete PDF is provided, however, in some cases the presented document/images is an abstract or sampling of the full patent application for display purposes. FreshPatents.com Terms/Support
-g2-0.3145
     SHARE
  
           

FreshNews promo


stats Patent Info
Application #
US 20140093407 A1
Publish Date
04/03/2014
Document #
14033347
File Date
09/20/2013
USPTO Class
417405
Other USPTO Classes
4152141, 4152081, 29428
International Class
/
Drawings
19


Hydraulic System


Follow us on Twitter
twitter icon@FreshPatents