CA2822253A1 - 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
- CA2822253A1 CA2822253A1 CA 2822253 CA2822253A CA2822253A1 CA 2822253 A1 CA2822253 A1 CA 2822253A1 CA 2822253 CA2822253 CA 2822253 CA 2822253 A CA2822253 A CA 2822253A CA 2822253 A1 CA2822253 A1 CA 2822253A1
- Authority
- CA
- Canada
- Prior art keywords
- header
- extrusion
- boss
- extrusion punch
- water tank
- 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
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
The method is 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 comprises the steps of extruding the boss in the steel blank and tapping the thread.
Description
METHOD FOR PROVIDING A THREADED FITTING IN A WATER
TANK HEADER, HEADER PRODUCED BY THE METHOD
AND WATER TANK INCLUDING THE HEADER
BACKGROUND
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.
SUMMARY
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.
BRIEF DESCRIPTION OF THE DRAWINGS
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 of FIG. 2;
FIG. 4 is a side view of the structure of FIG. 2;
FIG. 5 is a view along 5-5 of FIG. 3;
TANK HEADER, HEADER PRODUCED BY THE METHOD
AND WATER TANK INCLUDING THE HEADER
BACKGROUND
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.
SUMMARY
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.
BRIEF DESCRIPTION OF THE DRAWINGS
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 of FIG. 2;
FIG. 4 is a side view of the structure of FIG. 2;
FIG. 5 is a view along 5-5 of FIG. 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 of FIG. 6;
FIG. 8 is a side view of the structure of FIG. 6;
FIG. 9 is a view along section 9-9 of FIG. 7; and FIG. 10 is a view similar to FIG. 1 showing the construction of a water heater according to the exemplary embodiment of the invention.
DETAILED DESCRIPTION
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 prior art water tank 11. Herein, it will be seen that the tank 11 is defined by a cylindrical wall 12 to which top 13 and bottom 14 headers are welded. Each of the top header 13 and bottom header 14 has a main body 15 having a plurality of landings 16 extending therefrom. The landings 16 in the bottom header 14 serve as feet for the tank 11. Some of the landings 16 in the top header 13 have threaded fittings 17 welded thereto. Each threaded fitting 17 is defined by a flange 18 welded to the landing 16 and a tubular part 19 extending from the flange 18 and in which threads are defined. Each main 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.
FIG. 7 is an end view of the structure of FIG. 6;
FIG. 8 is a side view of the structure of FIG. 6;
FIG. 9 is a view along section 9-9 of FIG. 7; and FIG. 10 is a view similar to FIG. 1 showing the construction of a water heater according to the exemplary embodiment of the invention.
DETAILED DESCRIPTION
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 prior art water tank 11. Herein, it will be seen that the tank 11 is defined by a cylindrical wall 12 to which top 13 and bottom 14 headers are welded. Each of the top header 13 and bottom header 14 has a main body 15 having a plurality of landings 16 extending therefrom. The landings 16 in the bottom header 14 serve as feet for the tank 11. Some of the landings 16 in the top header 13 have threaded fittings 17 welded thereto. Each threaded fitting 17 is defined by a flange 18 welded to the landing 16 and a tubular part 19 extending from the flange 18 and in which threads are defined. Each main 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. 2-5 shows the construction of a suitable punch;
FIGS. 6-9 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 % NPT tap (not shown) is used to cut interior threads in each boss.
FIG. 10 is a cross-section similar to FIG. 1 but showing the results of the above method in a completed tank 20. Herein, it will be seen that the tank 20 includes the cylindrical wall 12 and bottom header 14 of the prior art, as well as a modified top header 13' which includes a generally conventional main body 15 but, instead of welded threaded fittings, has a plurality of threaded bosses 22 extending from the landings 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.
= .
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. 2-5 shows the construction of a suitable punch;
FIGS. 6-9 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 % NPT tap (not shown) is used to cut interior threads in each boss.
FIG. 10 is a cross-section similar to FIG. 1 but showing the results of the above method in a completed tank 20. Herein, it will be seen that the tank 20 includes the cylindrical wall 12 and bottom header 14 of the prior art, as well as a modified top header 13' which includes a generally conventional main body 15 but, instead of welded threaded fittings, has a plurality of threaded bosses 22 extending from the landings 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 (10)
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 .960 inch extrusion punch, the preformed hole is about a 5/16" hole and the steel blank is about .135" thickness HRPO draw quality steel.
5. The method according to claim 3, wherein the extrusion punch is a .960 inch extrusion punch, the preformed hole is a 5/16" hole and the steel blank is a .135"
thickness HRPO
draw quality steel.
thickness HRPO
draw quality steel.
6. The method according to claim 4 or 5, wherein the extrusion punch travels at about 480 inch/minute as the boss is formed.
7. The method according to any one of claims 4 to 6, wherein the extrusion punch has a TD
coating.
coating.
8. The method according to any one of claims 4 to 7, wherein the extrusion punch is lubricated with Syndraw 99 lubricant.
9. A header produced according to any one of claims 1 to 8.
10. 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 header member according to claim 9 defining at least one of the pair of headers.
and a heating element coupled to the tank and adapted to heat the contents thereof, wherein the improvement comprises:
a header member according to claim 9 defining at least one of the pair of headers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261734115P | 2012-12-06 | 2012-12-06 | |
| US61/734,115 | 2012-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2822253A1 true CA2822253A1 (en) | 2014-06-06 |
Family
ID=50877759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2822253 Abandoned CA2822253A1 (en) | 2012-12-06 | 2013-07-30 | 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921949A (en) * | 2016-05-10 | 2016-09-07 | 江苏天明特种车辆有限公司 | Intelligent tank plugging method for tank truck |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9541304B2 (en) * | 2014-12-10 | 2017-01-10 | Haier U.S. Appliance Solutions, Inc. | Water heater with centering thermal break support |
| CN107052711B (en) * | 2017-01-04 | 2018-02-16 | 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 |
Family Cites Families (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 |
| CA1154617A (en) * | 1979-03-17 | 1983-10-04 | Masatoshi Nishizawa | 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
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921949A (en) * | 2016-05-10 | 2016-09-07 | 江苏天明特种车辆有限公司 | Intelligent tank plugging method for tank truck |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140158066A1 (en) | 2014-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20170801 |