US20140158066A1 - Method for providing a threaded fitting in a water tank header, header produced by the method and water tank including the header - Google Patents
Method for providing a threaded fitting in a water tank header, header produced by the method and water tank including the header Download PDFInfo
- Publication number
- US20140158066A1 US20140158066A1 US14/099,498 US201314099498A US2014158066A1 US 20140158066 A1 US20140158066 A1 US 20140158066A1 US 201314099498 A US201314099498 A US 201314099498A US 2014158066 A1 US2014158066 A1 US 2014158066A1
- Authority
- US
- United States
- Prior art keywords
- header
- extrusion punch
- extrusion
- boss
- punch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/133—Storage heaters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
Abstract
A method for producing a header from a steel blank. The header has a boss and being of the type that is welded in use to a cylindrical wall to produce a hot water tank subassembly. The boss is interiorly threaded to define a threaded pressure vessel connection. The method includes the steps of extruding the boss in the steel blank and tapping the thread.
Description
- This application claims priority to U.S. Provisional Application No. 61/734,115, filed Dec. 6, 2012, which is herein incorporated by reference.
- 1. Field of the Invention
- The present invention is directed to a method for providing a threaded fitting in a water tank header, to a header produced by the foregoing method, and to a water tank including the header.
- 2. Related Art
- The construction of water heaters typically involves the connection, by welding, of a pair of headers to a cylindrical wall, to form a tank. For the delivery of water into the tank, and the withdrawal of water therefrom, threaded pressure vessel connections are typically provided as part of the headers. The headers are typically each defined by a stamped body and, for each threaded fitting, a flanged threaded fitting which is welded to the body.
- Forming one aspect of the invention is a method for producing a header from a steel blank, the header having a boss and being of the type that is welded in use to a cylindrical wall to produce a tank subassembly, the boss being interiorly threaded to define a threaded pressure vessel connection, the method comprising the steps of: extruding the boss in the steel blank; and tapping the thread.
- According to another aspect of the invention, the extrusion of the boss can be carried out with an extrusion punch and extrusion die.
- According to another aspect of the invention, the extrusion can involve passage of the extrusion punch through a preformed hole in the blank into the extrusion die.
- According to another aspect of the invention, the extrusion punch can be about a 0.960″ extrusion punch, the preformed hole can be about a 5/16″ hole and the steel blank can be about 0.135″ thickness HRPO draw quality steel.
- According to another aspect of the invention, the extrusion punch can be a 0.960″ extrusion punch, the preformed hole can be a 5/16″ hole and the steel blank can be a 0.135″ thickness HRPO draw quality steel.
- According to another aspect of the invention, the extrusion punch can travel at about 480 inches per minute as the boss is formed.
- According to another aspect of the invention, the extrusion punch can have a TD coating.
- According to another aspect of the invention, the extrusion punch can be lubricated with Syndraw 99 lubricant.
- A header produced according to the inventive method forms another aspect of the invention.
- Forming yet another aspect of the invention is an improved water heater. The water heater is of the type comprising: a cylindrical wall and a pair of headers welded to the wall to form a tank; and a heating element coupled to the tank and adapted to heat the contents thereof. The improvement comprises: a header member, produced according to the inventive method, defining at least one of the pair of headers.
- Other advantages, features and characteristics of the present invention will become more apparent upon consideration of the following detailed description of an exemplary embodiment of the invention and the appended claims with reference to the accompanying drawings, the latter being briefly described hereinbelow.
-
FIG. 1 is a side view of a prior art water heater tank; -
FIG. 2 is a perspective view of an extrusion punch used in the exemplary embodiment of the invention; -
FIG. 3 is an end view of the structure ofFIG. 2 ; -
FIG. 4 is a side view of the structure ofFIG. 2 ; -
FIG. 5 is a view along 5-5 ofFIG. 3 ; -
FIG. 6 is a perspective view of an extrusion die used in the exemplary embodiment; -
FIG. 7 is an end view of the structure ofFIG. 6 ; -
FIG. 8 is a side view of the structure ofFIG. 6 ; -
FIG. 9 is a view along section 9-9 ofFIG. 7 ; and -
FIG. 10 is a view similar toFIG. 1 showing the construction of a water heater according to the exemplary embodiment of the invention. - A method for producing a header according to an exemplary embodiment of the invention is described hereinafter in detail.
- However, as an initial manner, reference is made to
FIG. 1 , which shows a priorart water tank 11. Herein, it will be seen that thetank 11 is defined by acylindrical wall 12 to which top 13 andbottom 14 headers are welded. Each of thetop header 13 andbottom header 14 has amain body 15 having a plurality oflandings 16 extending therefrom. Thelandings 16 in thebottom header 14 serve as feet for thetank 11. Some of thelandings 16 in thetop header 13 have threadedfittings 17 welded thereto. Each threadedfitting 17 is defined by aflange 18 welded to thelanding 16 and atubular part 19 extending from theflange 18 and in which threads are defined. Eachmain body 15 is a stamped component produced from 0.135″ HRP draw quality steel. - The method allows, inter alia, for threaded fittings to be provided on a water tank top header without the need for welding. This avoids, for example, weld splatter, as well as the need for an inventory of separate fittings, with commensurate impacts upon costs.
- In the method, a blank of 0.135″ HRP draw quality steel is stamped in a conventional manner to form a dish (not shown) generally in the form of the prior art main body top header, but differing in that 5/16″ holes are provided in the landings that, in the prior art, would have had threaded fitting flanges secured thereto.
- Thereafter, a 0.960″ extrusion punch, provided with a TD coating, is passed through each hole into a mating die to produce a boss.
FIGS. 2 through 5 show the construction of a suitable punch;FIGS. 6 through 9 show the construction of a suitable die. - To avoid tearing, the punch is lubricated with Syndraw 99 lubricant and passed through the hole at about 480 inch/minute or less.
- Thereafter, a ¾ NPT tap (not shown) is used to cut interior threads in each boss.
-
FIG. 10 is a cross-section similar toFIG. 1 but showing the results of the above method in a completed tank 20. Herein, it will be seen that the tank 20 includes thecylindrical wall 12 andbottom header 14 of the prior art, as well as a modifiedtop header 13′ which includes a generally conventionalmain body 15 but, instead of welded threaded fittings, has a plurality of threadedbosses 22 extending from thelandings 16. - Whereas a single embodiment is herein described, it will be evident that modifications can be made. Accordingly, the invention should be understood as limited only by the accompanying claims, purposively construed.
Claims (20)
1. A method for producing a header from a steel blank, the header having a boss and being of the type that is welded in use to a cylindrical wall to produce a hot water tank subassembly, the boss being interiorly threaded to define a threaded pressure vessel connection, the method comprising the steps of:
extruding the boss in the steel blank; and
tapping the thread.
2. The method according to claim 1 , wherein the extrusion of the boss is carried out with an extrusion punch and extrusion die.
3. The method according to claim 2 , wherein the extrusion involves passage of the extrusion punch through a preformed hole into the extrusion die.
4. The method according to claim 3 , wherein the extrusion punch is about a 0.960 inch extrusion punch, the preformed hole is about a 5/16″ hole and the steel blank is about 0.135″ thickness HRPO draw quality steel.
5. The method according to claim 3 , wherein the extrusion punch is a 0.960 inch extrusion punch, the preformed hole is a 5/16″ hole and the steel blank is a 0.135″ thickness HRPO draw quality steel.
6. The method according to claim 4 , wherein the extrusion punch travels at about 480 inch/minute as the boss is formed.
7. The method according to claim 5 , wherein the extrusion punch travels at about 480 inch/minute as the boss is formed.
8. The method according to claim 4 , wherein the extrusion punch has a TD coating.
9. The method according to claim 5 , wherein the extrusion punch has a TD coating.
10. The method according to claim 6 , wherein the extrusion punch has a TD coating.
11. The method according to claim 4 , wherein the extrusion punch is lubricated with Syndraw 99 lubricant.
12. The method according to claim 5 , wherein the extrusion punch is lubricated with Syndraw 99 lubricant.
13. The method according to claim 6 , wherein the extrusion punch is lubricated with Syndraw 99 lubricant.
14. The method according to claim 7 , wherein the extrusion punch is lubricated with Syndraw 99 lubricant.
15. The method according to claim 8 , wherein the extrusion punch is lubricated with Syndraw 99 lubricant.
16. A header produced according to claim 1 .
17. A header produced according to claim 2 .
18. A header produced according to claim 3 .
19. A header produced according to claim 4 .
20. An improved water heater of the type comprising:
a cylindrical wall and a pair of headers welded to the wall to form a tank; and
a heating element coupled to the tank and adapted to heat the contents thereof,
wherein the improvement comprises:
a member according to claim 16 defining at least one of the pair of headers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/099,498 US20140158066A1 (en) | 2012-12-06 | 2013-12-06 | Method for providing a threaded fitting in a water tank header, header produced by the method and water tank including the header |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261734115P | 2012-12-06 | 2012-12-06 | |
US14/099,498 US20140158066A1 (en) | 2012-12-06 | 2013-12-06 | Method for providing a threaded fitting in a water tank header, header produced by the method and water tank including the header |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140158066A1 true US20140158066A1 (en) | 2014-06-12 |
Family
ID=50877759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/099,498 Abandoned US20140158066A1 (en) | 2012-12-06 | 2013-12-06 | Method for providing a threaded fitting in a water tank header, header produced by the method and water tank including the header |
Country Status (2)
Country | Link |
---|---|
US (1) | US20140158066A1 (en) |
CA (1) | CA2822253A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160169555A1 (en) * | 2014-12-10 | 2016-06-16 | General Electric Company | Water heater with centering thermal break support |
CN107052711A (en) * | 2017-01-04 | 2017-08-18 | 广东阿诗丹顿电气有限公司 | A kind of manufacture method of the double inner bags of storage-type electric water heater |
CN108088083A (en) * | 2017-12-18 | 2018-05-29 | 珠海格力电器股份有限公司 | Closing end component |
CN108151317A (en) * | 2017-12-18 | 2018-06-12 | 珠海格力电器股份有限公司 | Closing end component and inner water tank |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105921949B (en) * | 2016-05-10 | 2017-12-05 | 江苏天明特种车辆有限公司 | A kind of tank truck intelligently fills in tank method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1903630A (en) * | 1930-04-25 | 1933-04-11 | William Wharton Jr & Company I | Manufacture of gas cylinders |
US2909281A (en) * | 1954-05-19 | 1959-10-20 | Chrysler Corp | Closed end sleeve-like boss and method of making |
US4095449A (en) * | 1975-06-09 | 1978-06-20 | The Valeron Corporation | Coated punch |
US4312210A (en) * | 1979-03-17 | 1982-01-26 | Kobe Steel Limited | Warm forging method for cup-shaped pieces |
US5055000A (en) * | 1989-08-11 | 1991-10-08 | Wayne/Scott Fetzer Company | Enclosed pump motor and housing thereof |
-
2013
- 2013-07-30 CA CA 2822253 patent/CA2822253A1/en not_active Abandoned
- 2013-12-06 US US14/099,498 patent/US20140158066A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1903630A (en) * | 1930-04-25 | 1933-04-11 | William Wharton Jr & Company I | Manufacture of gas cylinders |
US2909281A (en) * | 1954-05-19 | 1959-10-20 | Chrysler Corp | Closed end sleeve-like boss and method of making |
US4095449A (en) * | 1975-06-09 | 1978-06-20 | The Valeron Corporation | Coated punch |
US4312210A (en) * | 1979-03-17 | 1982-01-26 | Kobe Steel Limited | Warm forging method for cup-shaped pieces |
US5055000A (en) * | 1989-08-11 | 1991-10-08 | Wayne/Scott Fetzer Company | Enclosed pump motor and housing thereof |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160169555A1 (en) * | 2014-12-10 | 2016-06-16 | General Electric Company | Water heater with centering thermal break support |
US9541304B2 (en) * | 2014-12-10 | 2017-01-10 | Haier U.S. Appliance Solutions, Inc. | Water heater with centering thermal break support |
CN107052711A (en) * | 2017-01-04 | 2017-08-18 | 广东阿诗丹顿电气有限公司 | A kind of manufacture method of the double inner bags of storage-type electric water heater |
CN108088083A (en) * | 2017-12-18 | 2018-05-29 | 珠海格力电器股份有限公司 | Closing end component |
CN108151317A (en) * | 2017-12-18 | 2018-06-12 | 珠海格力电器股份有限公司 | Closing end component and inner water tank |
Also Published As
Publication number | Publication date |
---|---|
CA2822253A1 (en) | 2014-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |