CA2444136A1 - Insulated hot water heater and method of insulating same - Google Patents
Insulated hot water heater and method of insulating same Download PDFInfo
- Publication number
- CA2444136A1 CA2444136A1 CA 2444136 CA2444136A CA2444136A1 CA 2444136 A1 CA2444136 A1 CA 2444136A1 CA 2444136 CA2444136 CA 2444136 CA 2444136 A CA2444136 A CA 2444136A CA 2444136 A1 CA2444136 A1 CA 2444136A1
- Authority
- CA
- Canada
- Prior art keywords
- top wall
- water heater
- hot water
- insulating
- inner casing
- 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
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Classifications
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/181—Construction of the tank
- F24H1/182—Insulation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
An insulated hot water heater is comprised of an inner casing defining a reservoir in which water is heated.
An outer casing is disposed about the inner casing and spaced therefrom to define an insulating space. Heat insulating material is disposed in the insulating space and extends at least about a circumferential side wall and a top wall of the inner tank. A disc of rigid insulating foam material is disposed between a top wall of the inner casing and a top wall of the outer casing. A method of thermally insulating the hot water heater consists of inverting the water heater and foaming the insulating space with a thermally insulating foam material whereby to achieve optimum foam density in the top portion of the hot water heater between the top wall of the inner casing and the top wall of the outer casing.
An outer casing is disposed about the inner casing and spaced therefrom to define an insulating space. Heat insulating material is disposed in the insulating space and extends at least about a circumferential side wall and a top wall of the inner tank. A disc of rigid insulating foam material is disposed between a top wall of the inner casing and a top wall of the outer casing. A method of thermally insulating the hot water heater consists of inverting the water heater and foaming the insulating space with a thermally insulating foam material whereby to achieve optimum foam density in the top portion of the hot water heater between the top wall of the inner casing and the top wall of the outer casing.
Description
INSULATED HOT WATER HEATER AND METHOD OF INSULATING SAME
TECHNICAL FIELD
toooi) The present invention relates to an insulated hot water heater and a method of insulating same whereby to obtain improved insulating properties in the top portion of the hot water heater between the inner casing and outer casing.
BACKGROUND ART
fooo2) Today's hot water heaters are insulated by rigid foam material which is disposed in the space between the inner casing and outer casing of the hot water heater. This is done by pouring in the bottom segment of this space between the inner casing and the outer casing, a two part urethane foam which then foams up upwards and fills the space between the inner casing and the lower casing. This two part urethane foam can be contained totally or partially in a plastic apron whereby not to stick to the outer casing inner walls to provide for ease of recycling. On the other hand, some of these hot water heaters are foamed without the use of these protective plastic bags. Once the foam is solidified the density of the solidified foam is optimum at the bottom of this space surrounding the inner casing and nominal at the top, the very portion of the water heater which is subjected to the hottest water contained within the inner casing. Accordingly, there is heat loss between the top portion of the inner casing and the top portion of the outer casing. Further, connecting pipes admit water to the inner casing and extracts hot water therefrom through the top wall of the inner casing. The piping and its bushing are connected to the top wall of the outer casing and accordingly conduct heat into this top wall.
tooo3l With the advent of water heaters having to meet better energy efficiencies imposed by governing agencies, all aspects of insulation must be studied and improved to meet the standards. Our study has shown that a hot water heater is subjected to approximately 250 of heat losses through the insulation and the top portion of the water heater.
SUMMARY OF INVENTION
fooo4l It is a feature of the present invention to provide an insulated hot water heater and a method of insulating same which substantially overcomes the above-mentioned disadvantages of the prior art.
tooo5) According to a broad aspect of the present invention there is provided an insulated hot water heater which comprises an inner casing defining a reservoir in which water is heated. An outer casing is disposed about the inner casing and spaced thereabout to define an insulating space. Each insulating material is disposed in the insulating space and extends at least about a circumferential side wall and a top wall of the inner tank.
A disc of rigid insulating foam material is disposed between a top wall of the inner casing and a top wall of the outer casing.
tooo6l According to a still further broad aspect of the present invention there is provided a method of thermally insulating a hot water heater having an inner casing defining a reservoir in which water is heated. An outer casing is disposed about the inner casing and spaced thereabout to define an insulating space about at least a circumferential side wall and a top wall of the inner casing. The method comprises the steps of inverting the hot water heater with the top wall of the inner casing facing downward and space from a top wall of the outer casing. The insulating spaces then foamed with a thermally insulating foam material which foams upward from the inverted bottom end of the hot water heater whereby the foam, when solidified, will have optimum density in the insulating space between the top wall of the inner casing and the top wall of the outer casing.
BRIEF DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings in which:
tooos~ FIG. 1 is a longitudinal cross-section view of a hot water heater insulated in accordance with the present invention;
tooo9~ FIG. 2 is a fragmented longitudinal cross-section view of the top end of the water heater illustrating a further configuration of the rigid insulating foam disc;
toool.01 FIG. 3 is a view similar to Figure 2 but showing a further configuration of the rigid insulating foam disc;
too01i1 FIG. 4 is a longitudinal section view illustrating the method of thermally insulating a hot water heater with a foaming material;
toooi2) FIG. 5 is a longitudinal cross-section view of the inverted top end of the hot water heater illustrating a conventional foaming method, and toool3) FIG. 6 is a longitudinal section view similar to Figure 4 but showing the rigid insulating foam disc of Figure 3 positioned over the inverted top wall of the inner casing.
DESCRTPTION OF PREFERRED EMBODIMENTS
toool4J Referring now to the drawings and more particularly to Figure 1 thereshown generally at 10 an insulated. hot water heater constructed in accordance with the present invention. It is pointed out that Figure 1 is a simplified illustration and does not show all of the component parts and piping of a hot water heater but only sufficient parts to illustrate the present invention.
toool5l As shown in Figure 1 the water heater comprises an inner casing 11 which defines a reservoir 12 in which water is heated by heating means not shown herein but such as resistive elements or a combustion chamber which would necessitate a central flue pipe extending through the inner casing. This is well known in the art. An outer casing 13 is disposed about the inner casing 11 and spaced therefrom to define an insulating space 14. Thermally insulating material at 15 is disposed in the insulating space 14 and extends at least about the circumferential side wall 11' and about the top wall 11" of the inner tank 11. A disc of rigid insulating foam material 16 is disposed between the top wall 13' of the outer casing 13 and the top wall 11" of the inner casing 11.
fooois~ The thermally insulating foam material 15 is a two part urethane foam and wherein a first foaming agent is disposed in the space 14 in the bottom area 14' of the insulating space 14 and by pouring a second foaming agent in the space the material will foam and rise toward the top area 14" of the space and fill the interstices about the insulating disc. Accordingly, there is provided improved insulation in the top area 14" of the insulating space where the urethane foam is of less density than in the bottom area 14'. By providing the rigid insulating foam material disc 16 the insulation in that area is greatly improved. As hereinshown the disc 16 is provided with transverse holes 17 and 17' to receive a nipple 18 and 18' for connection respectively to a cold water inlet piping and a hot water outlet piping, not shown.
foool~~ As shown in Figure 1 the hot water heater is provided with a rigid foam insulated support base 19 which is fully described in a patent assigned to the assignee of the present invention. It also provides excellent insulating properties at the bottom end of the hot water heater 10.
fooois~ As is well known in the art these hot water heaters are cylindrical heaters and accordingly the inner and outer casings are also cylindrical shaped. The disc 16 is a circular disc and provided with a thickness for close fit between the top wall 11" of the inner casing 11 and the top wall 13' of the outer casing. The disc at 16 has a flat top wall 16' for a flush fit with the inner surface of the top wall 13' of the outer casing. As shown in Figure 2 the disc also has a bottom concavely shaped cavity 19 for a close fit with the outer portion of the top wall 11" of the inner casing 11.
Ioool9l As shown in Figure 3 the cavity 19' of the disc 16' extends entirely about the convex top dome portion 20 of the inner casing. This diminishes the interstitial spaces and makes it easier for the foam material to rise in a substantially non interrupted cylindrical cavity 21 in the top area 14" of the insulating space 14. The cavity 19' is in flush contact with the outer surface of the dome portion 20.
fooo2ol Referring now to Figure 4 there is shown a method of thermally insulating a hot water heater 10' to obtain optimum foam density in the top area 14" of the insulating space 14. This method comprises inverting the hot water heater with the top wall 11" of the inner casing 11 facing downward and space from the top wall 13' of the outer casing 13 as herein shown the hot water l0' is supported on a support base 30 provided with cavities 31 and 31' to receive the nipples 18 18' projecting from the top wall 13' of the outer casing. With the hot water heater inverted as hereinshown, thermally insulating foam material is disposed in the insulating space and more specifically in the top wall area 14" which is now at the bottom of the inverted hot water heater. The foam material foams upwards from this inverted bottom end and when solidified the foam material has optimum density in the top area 14" of the insulating space 14. As hereinshown the hot water heater is fitted with the rigid foam insulating support base 19 and this support base is provided with a pouring hole 32 to permit the thermally insulating liquid foaming agent to be inserted within the space. The pouring hole also provides an escape hole for the foaming material should there be excess foam within the insulating space and it also provides an indication that the foaming material has risen to the top end of this insulating space.
too02i) As shown in Figure 5 the first foaming agent 33 of a two part urethane part is placed in a plastic film apron 34 which extends along the insulating space 14 and preferably against the inner surface of the circumferential side wall 35 of the outer casing 13 whereby to form a barrier between the inner side wall of the circumferential side wall and the urethane foam. This provides for ease of recycling of the hot water heater whereby the foaming material does not adhere to the outer casing and it becomes easy to separate the outer casing from the inner casing as the outer casing can be reused or recycled. With the first foaming agent contained within the plastic film apron a second liquid foaming agent is poured within the space from the pouring hole 32 and when it reaches the first foaming agent 33 it reacts therewith causing the foam material to form and rise and form a rigid urethane insulating foam in this space 14.
tooo22) As shown in Figure 6 the method may also comprise placing the disc 16 of rigid insulating foam material and close fit between the top wall 11" of the inner casing 11 and the top wall 13' of the outer casing. This disc 16 also provides excellent support for the inverted water heater and particularly for the inner casing which is the heaviest part of the hot water heater being constructed of steel material. The method of foaming the insulating space 14 is then repeated as above described.
fooo23) It is within the ambit of the present invention to cover any obvious modifications of the preferred embodiments described herein, provided such modifications fall within the scope of the appended claims.
TECHNICAL FIELD
toooi) The present invention relates to an insulated hot water heater and a method of insulating same whereby to obtain improved insulating properties in the top portion of the hot water heater between the inner casing and outer casing.
BACKGROUND ART
fooo2) Today's hot water heaters are insulated by rigid foam material which is disposed in the space between the inner casing and outer casing of the hot water heater. This is done by pouring in the bottom segment of this space between the inner casing and the outer casing, a two part urethane foam which then foams up upwards and fills the space between the inner casing and the lower casing. This two part urethane foam can be contained totally or partially in a plastic apron whereby not to stick to the outer casing inner walls to provide for ease of recycling. On the other hand, some of these hot water heaters are foamed without the use of these protective plastic bags. Once the foam is solidified the density of the solidified foam is optimum at the bottom of this space surrounding the inner casing and nominal at the top, the very portion of the water heater which is subjected to the hottest water contained within the inner casing. Accordingly, there is heat loss between the top portion of the inner casing and the top portion of the outer casing. Further, connecting pipes admit water to the inner casing and extracts hot water therefrom through the top wall of the inner casing. The piping and its bushing are connected to the top wall of the outer casing and accordingly conduct heat into this top wall.
tooo3l With the advent of water heaters having to meet better energy efficiencies imposed by governing agencies, all aspects of insulation must be studied and improved to meet the standards. Our study has shown that a hot water heater is subjected to approximately 250 of heat losses through the insulation and the top portion of the water heater.
SUMMARY OF INVENTION
fooo4l It is a feature of the present invention to provide an insulated hot water heater and a method of insulating same which substantially overcomes the above-mentioned disadvantages of the prior art.
tooo5) According to a broad aspect of the present invention there is provided an insulated hot water heater which comprises an inner casing defining a reservoir in which water is heated. An outer casing is disposed about the inner casing and spaced thereabout to define an insulating space. Each insulating material is disposed in the insulating space and extends at least about a circumferential side wall and a top wall of the inner tank.
A disc of rigid insulating foam material is disposed between a top wall of the inner casing and a top wall of the outer casing.
tooo6l According to a still further broad aspect of the present invention there is provided a method of thermally insulating a hot water heater having an inner casing defining a reservoir in which water is heated. An outer casing is disposed about the inner casing and spaced thereabout to define an insulating space about at least a circumferential side wall and a top wall of the inner casing. The method comprises the steps of inverting the hot water heater with the top wall of the inner casing facing downward and space from a top wall of the outer casing. The insulating spaces then foamed with a thermally insulating foam material which foams upward from the inverted bottom end of the hot water heater whereby the foam, when solidified, will have optimum density in the insulating space between the top wall of the inner casing and the top wall of the outer casing.
BRIEF DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings in which:
tooos~ FIG. 1 is a longitudinal cross-section view of a hot water heater insulated in accordance with the present invention;
tooo9~ FIG. 2 is a fragmented longitudinal cross-section view of the top end of the water heater illustrating a further configuration of the rigid insulating foam disc;
toool.01 FIG. 3 is a view similar to Figure 2 but showing a further configuration of the rigid insulating foam disc;
too01i1 FIG. 4 is a longitudinal section view illustrating the method of thermally insulating a hot water heater with a foaming material;
toooi2) FIG. 5 is a longitudinal cross-section view of the inverted top end of the hot water heater illustrating a conventional foaming method, and toool3) FIG. 6 is a longitudinal section view similar to Figure 4 but showing the rigid insulating foam disc of Figure 3 positioned over the inverted top wall of the inner casing.
DESCRTPTION OF PREFERRED EMBODIMENTS
toool4J Referring now to the drawings and more particularly to Figure 1 thereshown generally at 10 an insulated. hot water heater constructed in accordance with the present invention. It is pointed out that Figure 1 is a simplified illustration and does not show all of the component parts and piping of a hot water heater but only sufficient parts to illustrate the present invention.
toool5l As shown in Figure 1 the water heater comprises an inner casing 11 which defines a reservoir 12 in which water is heated by heating means not shown herein but such as resistive elements or a combustion chamber which would necessitate a central flue pipe extending through the inner casing. This is well known in the art. An outer casing 13 is disposed about the inner casing 11 and spaced therefrom to define an insulating space 14. Thermally insulating material at 15 is disposed in the insulating space 14 and extends at least about the circumferential side wall 11' and about the top wall 11" of the inner tank 11. A disc of rigid insulating foam material 16 is disposed between the top wall 13' of the outer casing 13 and the top wall 11" of the inner casing 11.
fooois~ The thermally insulating foam material 15 is a two part urethane foam and wherein a first foaming agent is disposed in the space 14 in the bottom area 14' of the insulating space 14 and by pouring a second foaming agent in the space the material will foam and rise toward the top area 14" of the space and fill the interstices about the insulating disc. Accordingly, there is provided improved insulation in the top area 14" of the insulating space where the urethane foam is of less density than in the bottom area 14'. By providing the rigid insulating foam material disc 16 the insulation in that area is greatly improved. As hereinshown the disc 16 is provided with transverse holes 17 and 17' to receive a nipple 18 and 18' for connection respectively to a cold water inlet piping and a hot water outlet piping, not shown.
foool~~ As shown in Figure 1 the hot water heater is provided with a rigid foam insulated support base 19 which is fully described in a patent assigned to the assignee of the present invention. It also provides excellent insulating properties at the bottom end of the hot water heater 10.
fooois~ As is well known in the art these hot water heaters are cylindrical heaters and accordingly the inner and outer casings are also cylindrical shaped. The disc 16 is a circular disc and provided with a thickness for close fit between the top wall 11" of the inner casing 11 and the top wall 13' of the outer casing. The disc at 16 has a flat top wall 16' for a flush fit with the inner surface of the top wall 13' of the outer casing. As shown in Figure 2 the disc also has a bottom concavely shaped cavity 19 for a close fit with the outer portion of the top wall 11" of the inner casing 11.
Ioool9l As shown in Figure 3 the cavity 19' of the disc 16' extends entirely about the convex top dome portion 20 of the inner casing. This diminishes the interstitial spaces and makes it easier for the foam material to rise in a substantially non interrupted cylindrical cavity 21 in the top area 14" of the insulating space 14. The cavity 19' is in flush contact with the outer surface of the dome portion 20.
fooo2ol Referring now to Figure 4 there is shown a method of thermally insulating a hot water heater 10' to obtain optimum foam density in the top area 14" of the insulating space 14. This method comprises inverting the hot water heater with the top wall 11" of the inner casing 11 facing downward and space from the top wall 13' of the outer casing 13 as herein shown the hot water l0' is supported on a support base 30 provided with cavities 31 and 31' to receive the nipples 18 18' projecting from the top wall 13' of the outer casing. With the hot water heater inverted as hereinshown, thermally insulating foam material is disposed in the insulating space and more specifically in the top wall area 14" which is now at the bottom of the inverted hot water heater. The foam material foams upwards from this inverted bottom end and when solidified the foam material has optimum density in the top area 14" of the insulating space 14. As hereinshown the hot water heater is fitted with the rigid foam insulating support base 19 and this support base is provided with a pouring hole 32 to permit the thermally insulating liquid foaming agent to be inserted within the space. The pouring hole also provides an escape hole for the foaming material should there be excess foam within the insulating space and it also provides an indication that the foaming material has risen to the top end of this insulating space.
too02i) As shown in Figure 5 the first foaming agent 33 of a two part urethane part is placed in a plastic film apron 34 which extends along the insulating space 14 and preferably against the inner surface of the circumferential side wall 35 of the outer casing 13 whereby to form a barrier between the inner side wall of the circumferential side wall and the urethane foam. This provides for ease of recycling of the hot water heater whereby the foaming material does not adhere to the outer casing and it becomes easy to separate the outer casing from the inner casing as the outer casing can be reused or recycled. With the first foaming agent contained within the plastic film apron a second liquid foaming agent is poured within the space from the pouring hole 32 and when it reaches the first foaming agent 33 it reacts therewith causing the foam material to form and rise and form a rigid urethane insulating foam in this space 14.
tooo22) As shown in Figure 6 the method may also comprise placing the disc 16 of rigid insulating foam material and close fit between the top wall 11" of the inner casing 11 and the top wall 13' of the outer casing. This disc 16 also provides excellent support for the inverted water heater and particularly for the inner casing which is the heaviest part of the hot water heater being constructed of steel material. The method of foaming the insulating space 14 is then repeated as above described.
fooo23) It is within the ambit of the present invention to cover any obvious modifications of the preferred embodiments described herein, provided such modifications fall within the scope of the appended claims.
Claims (13)
1. An insulated hot water heater comprising an inner casing defining a reservoir in which water is heated, an outer casing disposed about said inner casing and spaced thereabout to define an insulating space, heat insulating material in said insulating space and extending at least about a circumferential side wall and a top wall of said inner tank, and a disc of rigid insulating foam material disposed between a top wall of said inner casing and a top wall of said outer casing.
2. An insulated hot water heater as claimed in claim 1 wherein said inner casing and outer casing are cylindrical casings of circular cross-section, said disc being a circular disc of circular cross-section and of predetermined thickness
3. An insulated hot water heater as claimed in claim 2 wherein said disc has an outer diameter selected for close fit within said outer casing.
4. An insulated hot water heater as claimed in claim 2 wherein said disc has a flat top wall for flush fit with said top wall of said outer casing, and a bottom concavely shaped cavity for close fit with said top wall of said inner casing.
5. An insulated hot water heater as claimed in claim 4 wherein said inner tank has a top head portion which extends from a top end of a cylindrical side wall thereof and defines a convex top dome portion, said bottom concavely shaped cavity receiving said top head portion of said inner casing in flush contact therein.
6. An insulated hot water heater as claimed in claim 2 wherein said disc is provided with transverse holes of cylindrical cross-section to receive, in press fit therein, conduits for connection to said top wall of said inner tank.
7. An insulated hot water heater as claimed in claim 4 wherein there is further provided a thermally insulated material in said insulating space, said inner casing being supported on a rigid thermally insulated base.
8. A method of thermally insulating a hot water heater having an inner casing defining a reservoir in which water is heated, and an outer casing disposed about said inner casing and spaced thereabout to define an insulating space about at least a circumferential side wall and top wall of said inner casing, said method comprising the steps of i) inverting said hot water heater with said top wall of said inner casing facing downward and spaced from a top wall of said outer casing, and ii) foaming said insulating space with a thermally insulating foam material upwards from said inverted bottom end of said hot water heater whereby said foam, when solidified, will have optimum density in said insulating space between said top wall of said inner casing and said top wall of said outer casing.
9. A method as claimed in claim 8 wherein said step (ii) comprises pouring a thermally insulating liquid foaming agent in said insulating space from an inverted bottom end of said hot water heater whereby said liquid foaming agent with mix with a further reacting framing agent located at a bottom end of said insulating space in the area of said top wall of said inner casing and react to form a foam which will rise in said insulating space from said bottom end.
10. A method as claimed in claim 9 wherein said step (ii) comprises placing a first foaming agent of a two part urethane foam in a lower part of said insulating space where said inner casing top wall is located, and pouring a second liquid foaming agent in said insulating space to react with said first foaming agent to cause an insulating urethane foam to rise and solidify.
11. A method as claimed in claim 10 wherein there is further provided the step of placing a plastic film apron in said insulating space and about said inner casing, said step (ii) comprising pouring said liquid foaming agent in said plastic apron, said plastic apron foaming a protective sheeting against an inner surface of said outer casing after said insulating urethane foam as solidified.
12. A method as claimed in claim 9 wherein prior to step (i) there is provided the step of placing a disc of rigid insulating foam material in close fit between said top wall of said inner casing and an inner surface of a top wall of said outer casing.
13. A method as claimed in claim 9 wherein prior to step (i) there is provided the step of securing a rigid foam thermally insulating support base over said inverted bottom end of hot water heater with said support base extending to said outer casing, said step (ii) comprises pouring said liquid foaming agent in a pouring hole of said support base aligned with said insulating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2444136 CA2444136A1 (en) | 2003-10-08 | 2003-10-08 | Insulated hot water heater and method of insulating same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2444136 CA2444136A1 (en) | 2003-10-08 | 2003-10-08 | Insulated hot water heater and method of insulating same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2444136A1 true CA2444136A1 (en) | 2005-04-08 |
Family
ID=34398273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2444136 Abandoned CA2444136A1 (en) | 2003-10-08 | 2003-10-08 | Insulated hot water heater and method of insulating same |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2444136A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103669A1 (en) * | 2014-01-13 | 2015-07-16 | Dux Manufacturing Limited | A sensor mounting device and a related water heater and mounting method |
| CZ307508B6 (en) * | 2012-08-09 | 2018-10-31 | Krajčová Renata | A boiler wall formed by a system of shells |
| EP4332023A4 (en) * | 2021-04-28 | 2024-06-05 | Mitsubishi Electric Corporation | Hot water storage tank |
-
2003
- 2003-10-08 CA CA 2444136 patent/CA2444136A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307508B6 (en) * | 2012-08-09 | 2018-10-31 | Krajčová Renata | A boiler wall formed by a system of shells |
| WO2015103669A1 (en) * | 2014-01-13 | 2015-07-16 | Dux Manufacturing Limited | A sensor mounting device and a related water heater and mounting method |
| EP4332023A4 (en) * | 2021-04-28 | 2024-06-05 | Mitsubishi Electric Corporation | Hot water storage tank |
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