Browse Prior Art Database

Low Cost Thermostatic Valve

IP.com Disclosure Number: IPCOM000237125D
Publication Date: 2014-Jun-04
Document File: 4 page(s) / 113K

Publishing Venue

The IP.com Prior Art Database

Related People

Kurt Thomas: INVENTOR

Abstract

Thermostatic valve utilizing phase changing wax elements or motors have had a historic problem of accommodating high flow rates and maintaining temperature response in the code required time frame. At very low flows, this temperature response can result in large overshoots and undershoots of the desired temperature, causing discomfort and possible physical harm to bathers. In current designs, a compromise is often made between maximum allowable flow, beneficial for filling tubs and use in multi-port jetted shower systems, and minimum flow for stable operation, dictated by a single water saving shower head. Several patents have addressed this problem through pressure compensating restrictors on the inlets before the thermostatic element to help control the pressure drop across the element. It would beneficial if the thermostatic element could utilize a compensation based on outlet restriction to maximize performance at all flow rates.

This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately 43% of the total text.

INSTRUCTIONS: To submit your invention: 1. Complete this form. 2. Follow the instructions under #26 to complete and Electronically Signature as the inventor. 3. Save the completed/electronically signed form to your system. 4. Attach this form with all backup to an email to the attention of your supervisor. 5. Supervisor’s; review the submission for approval and type in your name under #27 in the approval section. 6. Save the form with all signatures then attach the completed, approved form to an email with all back up documentation and send to dona.lackman@deltafaucet.com. NOTE: ALL submissions must come to me from the supervisor as their approval of the submission.

1.     * Invention title:  Flow Compensating Thermostatic Valve

2.     * Related project title:

Project 1915 Low Cost Thermostatic Valve

3.     * Other related business platform:

4.     * Inventor full name (last name first):

Thomas, Kurt Judson

5.     Additional inventors:

     

6.     * Masco division:  Delta Faucet Company 7.     * Masco location:    Indianapolis

8.     * Telephone number:  317-848-0773 9.     * E-mail address:  kjt@deltafaucet.com

10.  * Conception Date:    10/1/2009 11.  * Written description date:  1/21/2010

12.  * Shared with anyone (non-inventor)?: 13.  Who shared with?: Garry Marty, Derek Brown

14.  * Sample or prototype?:

15.  If so, who made it, how and when?:

16.  * Invention for sale or sold?: 17.  If so, when?:      

18.  * Do you plan to publicly disclose invention?: 19.  If so, when do you plan to disclose?:      

20.  Who approved public disclosure?:      

21.  * What is the purpose of your invention?: Thermostatic valve utilizing phase changing wax elements or motors have had a historic problem of accommodating high flow rates and maintaining temperature response in the code required time frame.  At very low flows, this temperature response can result in large overshoots and undershoots of the desired temperature, causing discomfort and possible physical harm to bathers.  In current designs, a compromise is often made between maximum allowable flow, beneficial for filling tubs and use in multi-port jetted shower systems, and minimum flow for stable operation, dictated by a single water saving shower head.  Several patents have addressed this problem through pressure compensating restrictors on the inlets before the thermostatic element to help control the pressure drop across the element. It would beneficial if the thermostatic element could utilize a compensation based on outlet restriction to maximize performance at all flow rates.        

22.  * How does your invention achieve its purpose?: This invention proposes a method of controlling the flow by the thermostatic element so that is constant and independent of downstream restriction and resulting outlet flow.  With a constant flow across the element, the remaining properties system can be optimized around the fixed time versus temperature function of the constant flow thermostatic element.   If the thermostatic element is looked at as a independent compone...