US20060201454A1 - Heat storage tank - Google Patents
Heat storage tank Download PDFInfo
- Publication number
- US20060201454A1 US20060201454A1 US11/355,508 US35550806A US2006201454A1 US 20060201454 A1 US20060201454 A1 US 20060201454A1 US 35550806 A US35550806 A US 35550806A US 2006201454 A1 US2006201454 A1 US 2006201454A1
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- United States
- Prior art keywords
- heat storage
- storage tank
- plate
- prevention plate
- mixing prevention
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P2011/205—Indicating devices; Other safety devices using heat-accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Definitions
- This invention relates to a heat storage tank, having a vacuum heat insulating layer, for retaining heat and storing a fluid. More particularly, the present invention relates to a heat storage tank that is mounted to a car and is suitable for retaining heat and storing engine cooling water.
- a cooling system apparatus for promoting warm-up of a water-cooled type internal combustion engine of cars has been proposed that arranges a heat storage tank for retaining heat and storing engine cooling water flowing out from the engine in a cooling water circuit, introduces the high temperature cooling water stored in the heat storage tank into the engine and thus promotes warm-up of the engine.
- this cooling system apparatus stores excessive heat generated by the engine during the normal operation of the car in the heat storage tank assembled in the cooling water system and warms the engine and the inside of a passenger compartment at the starting of the car.
- the heat storage tank can effectively utilize excessive heat of the engine and can reduce the fuel consumption during the operation of the car from an overall aspect.
- Such a heat storage tank 10 generally includes an inner cylinder tank 1 of a stainless steel constituting a heat storage tank main body and an outer cylinder tank 2 similarly formed of stainless steel. As a space 3 between the inner cylinder tank 1 and the outer cylinder tank 2 is kept substantially at a vacuum, the heat storage tank 10 has a heat insulating structure.
- the inner cylinder tank 1 and the outer cylinder tank 2 are fixed by welding, etc, at an open portion ( 11 ).
- a body valve 4 having an inflow side passage 41 and an outflow side passage 42 is fitted into this open portion in the prior art as shown in FIG. 5A .
- the heat storage tanks described in Japanese Unexamined Patent Publication Nos. 10-71840 and 2003-80929 were developed. Such tanks are basically the heat storage tank 10 shown in FIG. 5B .
- a center pipe 5 connected to an outflow side passage 42 of a valve body 4 and extending vertically inside the heat storage tank 10 and a mixing prevention plate 6 arranged above the body valve 4 and preventing mixing of heat-accumulated hot water and cold water flowing in are disposed inside the heat storage tank 10 .
- the present invention has been completed in view of the problems described above and its object is to provide a heat storage tank that can improve the drain efficiency of heat-accumulated hot water and can simultaneously improve the productivity and assembly properties of a heat storage tank.
- a heat storage tank includes a body valve 4 having an inflow side passage 41 and an outflow side passage 42 and fitted into an open portion 11 of the heat storage tank 10 , a center pipe 5 communicating with the outflow side passage 42 and extending substantially vertically inside the tank, and a mixing prevention plate 6 , 60 for preventing mixing of the fluid flowing in and the fluid stored, wherein a through-hole 63 penetrating through the center pipe 5 and a large number of flow holes 64 for allowing the passage of the fluid are formed in the mixing prevention plate 6 , 60 , and the prevention mixing plate 6 is shaped into a diameter D 2 smaller than a diameter D 1 of the open portion 11 .
- the tank 10 and the mixing prevention tank 6 , 60 are formed independently of one another. Because the diameter D 2 of the mixing prevention plate 6 , 60 is smaller than the diameter D 1 of the tank, the mixing prevention plate 6 , 60 can be fitted simultaneously with the body valve 4 from the open portion 11 below the tank 10 and the assembly property can be improved.
- the mixing prevention plate 6 is constituted by a ring-like upper plate 62 and a cylindrical side plate 61 into a bottomed cylindrical shape. Accordingly, the inflow fluid impinges against the upper plate 62 , is then distributed through a large number of flow holes 64 and moves upward inside the tank 10 , and the fluid (hot water) stored in the storage portion T can be efficiently drained through the center pipe 5 .
- the center pipe 5 , the body valve 4 and the mixing prevention plate 6 , 60 are shaped into separate members and each component can be easily produced.
- the body valve 4 and the mixing prevention plate 6 are formed integrally.
- the center pipe 5 and the mixing prevention plate 6 , 60 are formed integrally.
- the body valve 4 and the side plate 61 of the mixing prevention pate are formed integrally and the center pipe 5 and the upper plate 62 of the mixing prevention plate are formed integrally. Because the components are integrated by thus taking productivity and assembly factors into consideration, the number of components can be decreased.
- FIG. 1 is a longitudinal sectional view of a heat storage tank according to a first embodiment of the present invention.
- FIG. 2 is a longitudinal sectional view of a heat storage tank according to a second embodiment of the present invention.
- FIG. 3 is a longitudinal sectional view of a heat storage tank according to a third embodiment of the present invention.
- FIGS. 4A and 4B show two modified examples of the third embodiment.
- FIGS. 5A and 5B are views for explaining two heat storage tanks according to the prior art.
- FIG. 1 is a longitudinal sectional view according to the first embodiment of the invention.
- the heat storage tank according to this embodiment is provided in an engine cooling water system of a car, accumulates excessive heat of an engine and is used for warming the engine and inside of a passenger compartment at the starting of the car.
- a heat storage tank 10 includes a inner cylinder tank 1 made of a material having high corrosion resistance (such as SUS304 stainless steel) and an outer cylinder tank 2 made of a material having a predetermined mechanical strength (such as SUS304 stainless steel).
- a space 3 between the inner cylinder tank 1 and the outer cylinder tank 2 is substantially kept at a vacuum to provide a heat insulating structure.
- the inside of the heat storage tank 10 is a storage portion T of the fluid.
- This tank 10 is mounted substantially vertically to the car in such a fashion that its bottom faces upward and its open portion 11 faces downward. In consequence, the open portion 11 of the heat storage tank 10 is positioned below the storage portion T in the direction of gravity.
- the inner cylinder tank 1 and the outer cylinder tank 2 are fixed to each other by welding or like means in the proximity 12 of the open portion 11 .
- a body valve 4 formed of a material having small heat conductivity such as a resin (Teflon, a trade mark, for example) is fixed fluid-tight to the open portion 11 of the heat storage tank 10 by means such as screwing or bonding.
- An inflow side passage 41 through which engine cooling water flows and an outflow side passage 42 through which engine cooling water (hot water) stored in the storage portion T flows out are formed inside the body valve 4 .
- the outflow side passage 42 is open into the tank at substantially the axial center position whereas the inflow side passage 41 is open into the tank at a position deviated from the axial center.
- These inflow and outflow passages 41 and 42 are connected to inlet/outlet pipes of the engine cooling water system, not shown, respectively.
- a mixing prevention plate 6 is fitted to an upper surface 4 a of the body valve 4 .
- the mixing prevention plate 6 has a bottomed cylindrical or cup-like shape that is formed as a ring-like upper plate 62 having a through-hole 63 for the passage of a later-appearing center pipe 5 and a cylindrical side plate 61 are formed integrally with each other.
- the mixing prevention plate 6 is fixed to the upper surface 4 a of the body valve 4 with its open side facing downward.
- a large number of flow holes 64 through which engine cooling water entering the tank 10 passes are bored in each of the upper plate 62 and the side plate 61 . In this case, the flow holes 64 need not be formed in the upper plate 62 .
- the mixing prevention plate 6 is formed into a diameter (outer diameter) D 2 that is smaller than the diameter D 1 of the open portion 11 of the tank 10 .
- One of the ends of the center pipe 5 for guiding drainage of engine cooling water (hot water) stored inside the heat storage tank 10 is connected to the outflow side passage 42 of the body valve 4 , passes through the through-hole 63 of the mixing prevention plate 6 and extends substantially vertically at the center of the tank 10 .
- the other end of the center pipe 5 is open to the storage portion T near the bottom face of the tank.
- the body valve 4 , the center pipe 5 and the mixing prevention plate 6 are formed into separate members.
- productivity of the tank becomes high because the tank 10 and the mixing prevention plate 6 are independent. Because the mixing prevention plate 6 is formed to an outer diameter D 2 smaller than the diameter D 1 of the open portion 11 of the tank 10 , the mixing prevention plate 6 can be inserted easily, and simultaneously with the body valve 4 , from the opening portion 11 , and the assembly properties can be drastically improved.
- engine cooling water flowing into the tank 10 through the inflow side passage 41 of the valve body 4 moves upward, impinges against the mixing prevention plate 6 (upper plate 62 ), is distributed through a large number of flow holes 64 , moves further upward, enters the center pipe 5 from the upper opening of the center pipe 5 and is discharged as a downward flow.
- a series of flows serially guides hot water (engine cooling water) heat of which is accumulated in the storage portion T of the heat storage tank 10 into the center pipe 5 . Accordingly, engine cooling water (cold water) flowing into the tank 10 is not short-circuited and drained, and hot water can be efficiently drained.
- the mixing prevention plate 6 by itself suppresses stirring and compulsive convection of engine cooling water (hot water) inside the tank 10 by the jet stream blown from the inflow side passage 41 into the tank 10 , and prevents mixing of hot water and cold water inside the tank 10 .
- FIG. 2 is a longitudinal sectional view of a heat storage tank according to the second embodiment.
- the second embodiment is different from the first embodiment in the structure of the mixing prevention plate 6 .
- the mixing prevention plate 6 according to the second embodiment is constituted as a whole by only a ring-like plate 60 .
- a through-hole 63 for the passage of a center pipe 5 is formed at the center of this ring-like plate 60 and a large number of flow holes 64 are formed around this through-hole 63 .
- the ring-like plate 60 as the mixing prevention plate 6 is arranged somewhat above the upper surface 4 a of the body valve 4 and is fixed to the center pipe 5 .
- the outer diameter D 2 of the ring-like plate 60 as the mixing prevention plate 6 is smaller than the diameter D 1 of an open portion 11 of the tank 10 .
- the plate 60 and the center pipe 5 may be formed integrally with or separately from each other. The rest of the constructions are the same and an explanation will be omitted.
- FIG. 3 is a longitudinal sectional view of a heat storage tank according to the third embodiment.
- the body valve 4 , the center pipe 5 and the mixing prevention plate 6 are shaped as the separate members but in the third embodiment, the body valve 4 and the mixing prevention plate 6 are formed integrally by molding, and only the center pipe 5 is the separate component. The rest of the constructions are the same as in the first embodiment.
- the third embodiment provides the effect that the number of components can be decreased.
- FIGS. 4A and 4B show two modified embodiments of the third embodiment.
- the upper plate 62 of the ring-like prevention mixing plate 6 is formed integrally with the center pipe 5 by molding and the cylindrical side plate 61 of the mixing prevention plate 6 is integrated with the body valve 4 by molding.
- the bottomed, cylindrical mixing prevention plate 6 including the upper plate 62 and the side plate 61 is integrated with the center pipe 5 by molding and the body valve 4 is the separate component.
- the mixing prevention plate 6 is shaped to a diameter (outer diameter) D 2 smaller than the diameter D 1 of the open portion 11 of the tank 10 in the same way as in the first embodiment.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
A heat storage tank 10 includes a heat a body valve 4 having an inflow side passage 41 and an outflow side passage 42 and fitted into an open portion 11 of the heat storage tank, a center pipe 5 communicating with the outflow side passage and extending substantially vertically inside the tank and a mixing prevention plate 6, 60 for preventing mixing of cold water flowing in and hot water stored, wherein a through-hole 63 penetrating through the center pipe and a large number of flow holes 64 are formed in the mixing prevention plate, and the prevention mixing plate has a diameter D2 smaller than a diameter D1 of the open portion 11 of the tank.
Description
- This invention relates to a heat storage tank, having a vacuum heat insulating layer, for retaining heat and storing a fluid. More particularly, the present invention relates to a heat storage tank that is mounted to a car and is suitable for retaining heat and storing engine cooling water.
- A cooling system apparatus for promoting warm-up of a water-cooled type internal combustion engine of cars has been proposed that arranges a heat storage tank for retaining heat and storing engine cooling water flowing out from the engine in a cooling water circuit, introduces the high temperature cooling water stored in the heat storage tank into the engine and thus promotes warm-up of the engine. In other words, this cooling system apparatus stores excessive heat generated by the engine during the normal operation of the car in the heat storage tank assembled in the cooling water system and warms the engine and the inside of a passenger compartment at the starting of the car.
- As described above, the heat storage tank can effectively utilize excessive heat of the engine and can reduce the fuel consumption during the operation of the car from an overall aspect.
- Such a
heat storage tank 10 generally includes aninner cylinder tank 1 of a stainless steel constituting a heat storage tank main body and anouter cylinder tank 2 similarly formed of stainless steel. As aspace 3 between theinner cylinder tank 1 and theouter cylinder tank 2 is kept substantially at a vacuum, theheat storage tank 10 has a heat insulating structure. Theinner cylinder tank 1 and theouter cylinder tank 2 are fixed by welding, etc, at an open portion (11). Abody valve 4 having aninflow side passage 41 and anoutflow side passage 42 is fitted into this open portion in the prior art as shown inFIG. 5A . - In the
heat storage tank 10 according to the prior art, however, a part of cold water taken in short-circuits and is, as such, drained from theoutflow side passage 42 even when an attempt is made to drain hot water from theoutflow side passage 42 by taking cold water from theinflow side passage 41 in the heat storage tank. Consequently, it has been difficult to effectively take out the accumulated hot water. - To prevent such a short-circuit of the cold water, the heat storage tanks described in Japanese Unexamined Patent Publication Nos. 10-71840 and 2003-80929 were developed. Such tanks are basically the
heat storage tank 10 shown inFIG. 5B . In other words, acenter pipe 5 connected to anoutflow side passage 42 of avalve body 4 and extending vertically inside theheat storage tank 10 and amixing prevention plate 6 arranged above thebody valve 4 and preventing mixing of heat-accumulated hot water and cold water flowing in are disposed inside theheat storage tank 10. - In the heat storage tank of the prior art described above, it has been necessary to weld, in advance, the
mixing prevention plate 6 to theinner cylinder tank 1 and then to assemble thebody valve 4 and thecenter pipe 5 to the heat storage tank. In consequence, the productivity and the assembly properties of the heat storage tank drop remarkably. - The present invention has been completed in view of the problems described above and its object is to provide a heat storage tank that can improve the drain efficiency of heat-accumulated hot water and can simultaneously improve the productivity and assembly properties of a heat storage tank.
- A heat storage tank according to the invention includes a
body valve 4 having aninflow side passage 41 and anoutflow side passage 42 and fitted into anopen portion 11 of theheat storage tank 10, acenter pipe 5 communicating with theoutflow side passage 42 and extending substantially vertically inside the tank, and amixing prevention plate hole 63 penetrating through thecenter pipe 5 and a large number offlow holes 64 for allowing the passage of the fluid are formed in themixing prevention plate prevention mixing plate 6 is shaped into a diameter D2 smaller than a diameter D1 of theopen portion 11. Productivity of the tank can be improved because thetank 10 and themixing prevention tank mixing prevention plate mixing prevention plate body valve 4 from theopen portion 11 below thetank 10 and the assembly property can be improved. - In the heat storage tank according to the invention, the
mixing prevention plate 6 is constituted by a ring-likeupper plate 62 and acylindrical side plate 61 into a bottomed cylindrical shape. Accordingly, the inflow fluid impinges against theupper plate 62, is then distributed through a large number offlow holes 64 and moves upward inside thetank 10, and the fluid (hot water) stored in the storage portion T can be efficiently drained through thecenter pipe 5. - In the heat storage tank according to the invention, the
center pipe 5, thebody valve 4 and themixing prevention plate - In the heat storage tank according to the invention, the
body valve 4 and themixing prevention plate 6 are formed integrally. In the heat storage tank according to the invention, thecenter pipe 5 and themixing prevention plate body valve 4 and theside plate 61 of the mixing prevention pate are formed integrally and thecenter pipe 5 and theupper plate 62 of the mixing prevention plate are formed integrally. Because the components are integrated by thus taking productivity and assembly factors into consideration, the number of components can be decreased. - The present invention will become more apparent from the following description of preferred embodiments thereof when taken in connection with the accompanying drawings.
-
FIG. 1 is a longitudinal sectional view of a heat storage tank according to a first embodiment of the present invention. -
FIG. 2 is a longitudinal sectional view of a heat storage tank according to a second embodiment of the present invention. -
FIG. 3 is a longitudinal sectional view of a heat storage tank according to a third embodiment of the present invention. -
FIGS. 4A and 4B show two modified examples of the third embodiment. -
FIGS. 5A and 5B are views for explaining two heat storage tanks according to the prior art. - Heat storage tanks according to embodiments of the invention will be hereinafter explained with reference to the drawings.
FIG. 1 is a longitudinal sectional view according to the first embodiment of the invention. The heat storage tank according to this embodiment is provided in an engine cooling water system of a car, accumulates excessive heat of an engine and is used for warming the engine and inside of a passenger compartment at the starting of the car. - A
heat storage tank 10 includes ainner cylinder tank 1 made of a material having high corrosion resistance (such as SUS304 stainless steel) and anouter cylinder tank 2 made of a material having a predetermined mechanical strength (such as SUS304 stainless steel). Aspace 3 between theinner cylinder tank 1 and theouter cylinder tank 2 is substantially kept at a vacuum to provide a heat insulating structure. The inside of theheat storage tank 10 is a storage portion T of the fluid. Thistank 10 is mounted substantially vertically to the car in such a fashion that its bottom faces upward and itsopen portion 11 faces downward. In consequence, theopen portion 11 of theheat storage tank 10 is positioned below the storage portion T in the direction of gravity. Theinner cylinder tank 1 and theouter cylinder tank 2 are fixed to each other by welding or like means in the proximity 12 of theopen portion 11. - A
body valve 4 formed of a material having small heat conductivity such as a resin (Teflon, a trade mark, for example) is fixed fluid-tight to theopen portion 11 of theheat storage tank 10 by means such as screwing or bonding. Aninflow side passage 41 through which engine cooling water flows and anoutflow side passage 42 through which engine cooling water (hot water) stored in the storage portion T flows out are formed inside thebody valve 4. Incidentally, theoutflow side passage 42 is open into the tank at substantially the axial center position whereas theinflow side passage 41 is open into the tank at a position deviated from the axial center. These inflow andoutflow passages - In this embodiment, a
mixing prevention plate 6 is fitted to anupper surface 4 a of thebody valve 4. Themixing prevention plate 6 has a bottomed cylindrical or cup-like shape that is formed as a ring-likeupper plate 62 having a through-hole 63 for the passage of a later-appearingcenter pipe 5 and acylindrical side plate 61 are formed integrally with each other. Themixing prevention plate 6 is fixed to theupper surface 4 a of thebody valve 4 with its open side facing downward. A large number offlow holes 64 through which engine cooling water entering thetank 10 passes are bored in each of theupper plate 62 and theside plate 61. In this case, theflow holes 64 need not be formed in theupper plate 62. Furthermore, themixing prevention plate 6 is formed into a diameter (outer diameter) D2 that is smaller than the diameter D1 of theopen portion 11 of thetank 10. - One of the ends of the
center pipe 5 for guiding drainage of engine cooling water (hot water) stored inside theheat storage tank 10 is connected to theoutflow side passage 42 of thebody valve 4, passes through the through-hole 63 of themixing prevention plate 6 and extends substantially vertically at the center of thetank 10. The other end of thecenter pipe 5 is open to the storage portion T near the bottom face of the tank. - In this embodiment, the
body valve 4, thecenter pipe 5 and themixing prevention plate 6 are formed into separate members. - In the embodiment having the construction described above, productivity of the tank becomes high because the
tank 10 and themixing prevention plate 6 are independent. Because the mixingprevention plate 6 is formed to an outer diameter D2 smaller than the diameter D1 of theopen portion 11 of thetank 10, the mixingprevention plate 6 can be inserted easily, and simultaneously with thebody valve 4, from the openingportion 11, and the assembly properties can be drastically improved. - In the embodiment having the construction described above, engine cooling water flowing into the
tank 10 through theinflow side passage 41 of thevalve body 4 moves upward, impinges against the mixing prevention plate 6 (upper plate 62), is distributed through a large number of flow holes 64, moves further upward, enters thecenter pipe 5 from the upper opening of thecenter pipe 5 and is discharged as a downward flow. A series of flows serially guides hot water (engine cooling water) heat of which is accumulated in the storage portion T of theheat storage tank 10 into thecenter pipe 5. Accordingly, engine cooling water (cold water) flowing into thetank 10 is not short-circuited and drained, and hot water can be efficiently drained. The mixingprevention plate 6 by itself suppresses stirring and compulsive convection of engine cooling water (hot water) inside thetank 10 by the jet stream blown from theinflow side passage 41 into thetank 10, and prevents mixing of hot water and cold water inside thetank 10. -
FIG. 2 is a longitudinal sectional view of a heat storage tank according to the second embodiment. The second embodiment is different from the first embodiment in the structure of the mixingprevention plate 6. In other words, the mixingprevention plate 6 according to the second embodiment is constituted as a whole by only a ring-like plate 60. A through-hole 63 for the passage of acenter pipe 5 is formed at the center of this ring-like plate 60 and a large number of flow holes 64 are formed around this through-hole 63. The ring-like plate 60 as the mixingprevention plate 6 is arranged somewhat above theupper surface 4 a of thebody valve 4 and is fixed to thecenter pipe 5. The outer diameter D2 of the ring-like plate 60 as the mixingprevention plate 6 is smaller than the diameter D1 of anopen portion 11 of thetank 10. In this case, theplate 60 and thecenter pipe 5 may be formed integrally with or separately from each other. The rest of the constructions are the same and an explanation will be omitted. - In this second embodiment, the same function and effect as that of the first embodiment can be obtained.
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FIG. 3 is a longitudinal sectional view of a heat storage tank according to the third embodiment. In the first embodiment, thebody valve 4, thecenter pipe 5 and the mixingprevention plate 6 are shaped as the separate members but in the third embodiment, thebody valve 4 and the mixingprevention plate 6 are formed integrally by molding, and only thecenter pipe 5 is the separate component. The rest of the constructions are the same as in the first embodiment. - In addition to the function and effect of the first embodiment, the third embodiment provides the effect that the number of components can be decreased.
-
FIGS. 4A and 4B show two modified embodiments of the third embodiment. In the modified embodiment shown inFIG. 4A , theupper plate 62 of the ring-likeprevention mixing plate 6 is formed integrally with thecenter pipe 5 by molding and thecylindrical side plate 61 of the mixingprevention plate 6 is integrated with thebody valve 4 by molding. - In the modified embodiment shown in
FIG. 4B , the bottomed, cylindrical mixingprevention plate 6 including theupper plate 62 and theside plate 61 is integrated with thecenter pipe 5 by molding and thebody valve 4 is the separate component. - In the third embodiment and the two modified embodiments, the mixing
prevention plate 6 is shaped to a diameter (outer diameter) D2 smaller than the diameter D1 of theopen portion 11 of thetank 10 in the same way as in the first embodiment. - Although the invention has thus been described in detail on the basis of the specific embodiments thereof, those skilled in the art could make various changes and modifications thereto without departing from the scope and spirit of the appended claims.
Claims (6)
1. A heat storage tank having a heat insulating structure equipped with a storage portion (T) for storing therein a fluid while retaining its heat, comprising:
a body valve having an inflow side passage for causing the fluid to flow into said heat storage tank and an outflow side passage for causing the fluid stored in said heat storage tank to flow outside, and fitted into an open portion of said heat storage tank positioned below the storage portion in the direction of gravity;
a center pipe communicating with said outflow side passage and extending substantially vertically inside said storage portion; and
a mixing prevention plate arranged inside said heat storage tank, for preventing mixing of the fluid flowing in and the fluid stored;
wherein a through-hole penetrating through said center pipe and a large number of flow holes for allowing the passage of the inflowing fluid are formed in said mixing prevention plate, and said prevention mixing plate is shaped into a diameter D2 smaller than a diameter D1 of said open portion.
2. A heat storage tank according to claim 1 , wherein said mixing prevention plate is shaped into a bottomed cylindrical shape having a ring-like upper plate and a cylindrical side plate.
3. A heat storage tank according to claim 1 , wherein said center pipe, said body valve and said mixing prevention plate are shaped into separate members.
4. A heat storage tank according to claim 2 , wherein said body valve and said mixing prevention plate are shaped integrally with each other.
5. A heat storage tank according to claim 1 , wherein said center pipe and said mixing prevention plate are shaped integrally with each other.
6. A heat storage tank according to claim 2 , wherein said body valve and said side plate of said mixing prevention plate are integral with each other and said center pipe and said upper plate of said mixing prevention plate are integral with each other.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-045245 | 2005-02-22 | ||
JP2005045245A JP2006233765A (en) | 2005-02-22 | 2005-02-22 | Heat storage tank |
Publications (1)
Publication Number | Publication Date |
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US20060201454A1 true US20060201454A1 (en) | 2006-09-14 |
Family
ID=36969496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/355,508 Abandoned US20060201454A1 (en) | 2005-02-22 | 2006-02-16 | Heat storage tank |
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US (1) | US20060201454A1 (en) |
JP (1) | JP2006233765A (en) |
DE (1) | DE102006007757A1 (en) |
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JP4899943B2 (en) * | 2007-03-06 | 2012-03-21 | パナソニック株式会社 | Thermal insulation tank |
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US5749329A (en) * | 1994-11-14 | 1998-05-12 | Thurfjell; Jens | Heat-storage device |
US5809944A (en) * | 1996-08-30 | 1998-09-22 | Denso Corporation | Cooling water control valve and cooling water circuit system employing the same |
US6477990B2 (en) * | 2000-10-11 | 2002-11-12 | Denso Corporation | Heat storage tank in cooling water circuit |
US20040056106A1 (en) * | 2002-08-05 | 2004-03-25 | Kenichi Maruyama | Heat accumulator for vehicle use |
US6742480B2 (en) * | 2001-07-04 | 2004-06-01 | Nippon Soken, Inc. | Heat storage tank |
US6994058B2 (en) * | 2003-04-09 | 2006-02-07 | Toyota Jidosha Kabushiki Kaisha | Cooling apparatus for engine |
US20060070589A1 (en) * | 2004-10-01 | 2006-04-06 | Denso Corporation | Heat storage tank with improved heat insulating performance |
US20060231640A1 (en) * | 2005-04-18 | 2006-10-19 | Denso Corporation | Waste heat utilizing system |
-
2005
- 2005-02-22 JP JP2005045245A patent/JP2006233765A/en not_active Withdrawn
-
2006
- 2006-02-16 US US11/355,508 patent/US20060201454A1/en not_active Abandoned
- 2006-02-20 DE DE102006007757A patent/DE102006007757A1/en not_active Withdrawn
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US4572402A (en) * | 1982-06-29 | 1986-02-25 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Container having a high degree of thermal insulation |
US5749329A (en) * | 1994-11-14 | 1998-05-12 | Thurfjell; Jens | Heat-storage device |
US5809944A (en) * | 1996-08-30 | 1998-09-22 | Denso Corporation | Cooling water control valve and cooling water circuit system employing the same |
US6477990B2 (en) * | 2000-10-11 | 2002-11-12 | Denso Corporation | Heat storage tank in cooling water circuit |
US6742480B2 (en) * | 2001-07-04 | 2004-06-01 | Nippon Soken, Inc. | Heat storage tank |
US20040056106A1 (en) * | 2002-08-05 | 2004-03-25 | Kenichi Maruyama | Heat accumulator for vehicle use |
US6994058B2 (en) * | 2003-04-09 | 2006-02-07 | Toyota Jidosha Kabushiki Kaisha | Cooling apparatus for engine |
US20060070589A1 (en) * | 2004-10-01 | 2006-04-06 | Denso Corporation | Heat storage tank with improved heat insulating performance |
US20060231640A1 (en) * | 2005-04-18 | 2006-10-19 | Denso Corporation | Waste heat utilizing system |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1905976A1 (en) * | 2006-09-28 | 2008-04-02 | Nichias Corporation | Insulated container and method of manufacturing the same |
US20080078771A1 (en) * | 2006-09-28 | 2008-04-03 | Nichias Corporation | Insulated container and method of manufacturing the same |
US20080237244A1 (en) * | 2007-03-26 | 2008-10-02 | Nichias Corporation | Heat-insulating container and method for manufacturing same |
EP2500540A4 (en) * | 2009-11-13 | 2018-04-11 | Calsonic Kansei Corporation | Thermal storage system and method for controlling same |
WO2011149190A2 (en) * | 2010-05-28 | 2011-12-01 | 주식회사 경동나비엔 | Hot water storage tank for water heater |
WO2011149190A3 (en) * | 2010-05-28 | 2012-02-16 | 주식회사 경동나비엔 | Hot water storage tank for water heater |
US20120012276A1 (en) * | 2010-07-14 | 2012-01-19 | Brian Von Herzen | System and method for storing thermal energy |
US9557079B2 (en) * | 2010-07-14 | 2017-01-31 | Bright Energy Storage Technologies, Llp | System and method for storing thermal energy |
US20120279484A1 (en) * | 2011-01-28 | 2012-11-08 | Jack Lange | Fuel Oil Supply System from a Remote Source Including Recirculated Heating of Fuel Oil and Supplemented Supply Pressure |
EP4075068A1 (en) * | 2021-04-15 | 2022-10-19 | Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno | Low loss sensible heat storage |
WO2022219199A1 (en) | 2021-04-15 | 2022-10-20 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Low loss sensible heat storage |
WO2023099020A1 (en) * | 2021-11-30 | 2023-06-08 | Truma Gerätetechnik GmbH & Co. KG | Device for heating a liquid |
Also Published As
Publication number | Publication date |
---|---|
JP2006233765A (en) | 2006-09-07 |
DE102006007757A1 (en) | 2006-10-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DENSO CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MIYATA, YOSHIO;NISHIMURA, MASAO;UCHIMURA, KATSUNORI;AND OTHERS;REEL/FRAME:017750/0765 Effective date: 20060320 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |