KR20130137103A - Insulation hot water storage device and hot water storage type water heater - Google Patents

Abstract

(Problem) Provided is technology capable of preventing a decline in the work efficiency of an intumescent insulation member attachment and detachment work even if a hot water storage tank is enlarged. (Method of solution) The intumescent insulation member (30) includes: a first container part (50) that covers the outer surface on the lower side of a hot-water storage tank (22) in an axial direction; and a second container part (70) that covers the outer surface on the upper side of the hot-water storage tank in an axial direction, wherein the first container part (50) and the second container part (70) include left side parts (52,72) and right side parts (54,74), respectively. The first container part (50) which includes the first left side part (52) and the right side part (54) and a second container part (70) which includes the second left side part (72) and the second right side part (74) are pressed by a lower surface part (40), a ring part (60), and a upper surface part (80) in the direction of the hot-water storage tank (22) and is maintained.

Description

INSULATION HOT WATER STORAGE DEVICE AND HOT WATER STORAGE TYPE WATER HEATER}

The technology disclosed in this specification relates to a heat insulation type hot water supply apparatus and a low temperature type hot water supply apparatus provided with this heat insulation type hot water supply apparatus.

A hot water supply technique is known in which hot water heated by a heat pump, a gas hot water heater, or the like is stored in a water storage tank, and the hot water that has been boiled is supplied to a required location when necessary. Moreover, the technique which prevents the temperature of the hot water heated by the water storage tank from falling by covering a water storage tank with a heat insulating material is also known.

Patent Literature 1 discloses a heat insulating storage device in which a portion of an outer circumferential surface of a substantially cylindrical storage tank is covered with a vacuum heat insulating member, and the outside thereof is covered with a foamable heat insulating member. In addition, a vacuum heat insulating member inserts a porous core material between two films, welds two films in the range which circumscribes the interposed core material, and seals the existence range of a core material in a vacuum state. .

Patent Document 1: Japanese Patent Publication No. 2007-212062

In the prior art, a foamable heat insulating member covering a low temperature tank usually has a right side covering the entire right side half of the outer circumferential surface of the substantially low temperature tank and a left half surface of the left half of the outer circumferential surface of the approximately cylindrical storage tank. It forms by combining the left part which covers. In the prior art, when the storage tank becomes large, the right part and the left part for covering the storage tank are also enlarged, so that the operation of covering the storage tank with the foam insulation material and removing the foam insulation material from the storage tank Work efficiency may fall. In this specification, even when the water storage tank is enlarged, the technique which can suppress the fall of the work efficiency of the detachable operation of a foamable heat insulation member is provided.

The heat-insulating water-storage apparatus disclosed by this specification is equipped with the water storage tank of a substantially cylindrical shape, the foamed heat insulation member which covers a water storage tank, and the vacuum heat insulation member arrange | positioned at least in part between a water storage tank and a foamable heat insulation member. The foamable heat insulating member includes a first cylinder portion, a second cylinder portion, a bottom surface portion, a ring portion, and an upper surface portion. The 1st cylinder part is a cylindrical part which covers the outer peripheral surface of one part of the axial direction of a water storage tank, and has a 1st left part and a 1st right part. The 2nd cylinder part is a cylindrical part which covers the outer peripheral surface of another part of the axial direction of a water storage tank, and has a 2nd left part and a 2nd right part. The bottom part covers the bottom face of the storage tank, and presses and holds the lower end of the first left part and the lower end of the first right part in the direction of the storage tank. The ring portion presses and holds the upper end of the first left portion and the upper end of the first right portion in the storage tank direction, and presses and holds the lower end of the second left portion and the lower end of the second right portion in the storage tank direction. The upper surface portion covers the outer circumferential surface of the upper surface of the storage tank, and presses and holds the upper end of the second left portion and the upper end of the second right portion in the storage tank direction.

The said foamable heat insulation member is a heat insulation member made of foamed styrol, for example. Moreover, the said vacuum heat insulation member sandwiches a porous core material between two films, welds two films in the range which circumscribes the interposed core material, and makes the existence range of a core material into a vacuum state. It is sealed.

In the above-mentioned heat insulation type boiling water heater, the foamable heat insulating member includes a first cylinder portion covering a part of the outer circumferential surface of the water storage tank in the axial direction, and a second cylinder portion covering a portion of the other circumferential surface of the water storage tank in the axial direction. The cylinder part and the 2nd cylinder part are provided with the left side part and the right side part, respectively. According to the above-described heat-insulating water storage device, the first cylinder portion (the first left portion and the first right portion) and the second cylinder portion (the second left portion and the second right portion) are the bottom tank, the ring portion, and the top surface portion. In the direction of pressure. Therefore, according to the above-mentioned heat insulation bottom water heater, even if a water storage tank becomes large, the 1st cylinder part (1st left part and 1st right part) which is comparatively small in size, and the 2nd cylinder part (2nd left part and 2nd right side) The bottom tank can be covered by combining Therefore, like the foamable heat insulation member in the conventional thermal insulation type bottom water heater, only the two parts of the right part which cover the front half of the right half of the outer peripheral surface of a water storage tank, and the left side part cover the front half of the left half of the outer peripheral surface of a water storage tank are stored. There is no need to cover the tank. Therefore, according to the said heat insulation type bottom water heating device, even if a water storage tank is large, for example, it can suppress that the work efficiency of the detachable operation of a foamable heat insulation member falls.

Moreover, according to the said structure, the 1st cylinder part, the 2nd cylinder part, a bottom face part, a ring part, and an upper face part can coat | cover the outer surface of the outside of a storage tank. Therefore, it is possible to effectively prevent the temperature of the hot water stored in the storage tank from being lowered.

1 is a perspective view schematically showing a low temperature hot water supply device
2 is an exploded perspective view schematically showing a low-temperature hot water supply device;
3 is a cross-sectional view schematically showing an insulating water storage device.
4 is an enlarged view of part IV of FIG.
5 is an enlarged view of portion V of FIG. 3;
FIG. 6 is an enlarged view of part VI of FIG. 3;
FIG. 7 is an exploded perspective view schematically showing a state in which a storage tank is covered with a foamable insulating member; FIG.
FIG. 8 is an exploded perspective view schematically showing a state in which a storage tank is covered with a foamable insulating member; FIG.

The main features of the embodiments described below are listed. In addition, the technical elements described below are technical elements which are independent of each other and exhibit technical usefulness alone or in various combinations, and are not limited to the combination of claims described at the time of filing.

(Characteristic 1) This specification also discloses the low temperature type hot water supply apparatus provided with the above-mentioned heat insulation type hot water supply apparatus, and the hot water supply path | route which supplies hot water in a low temperature tank to a hot water use place.

(Example)

As shown in FIG. 1, the hot water supply type | mold hot water supply apparatus 2 which concerns on a present Example holds the hot water heated by the heat pump in the water storage tank, and supplies the hot water which was heated to the required place as needed. to be. The low temperature type hot water supply device 2 includes a casing 4 and a heat insulating type hot water supply device 20. The adiabatic water heater 20 is provided in the casing 4. In addition, in FIG. 1, illustration of various pipings, such as a hot water supply path provided around the heat insulation type water heater 20 and the casing 4, is abbreviate | omitted.

The casing 4 is a box-shaped member which can accommodate the heat-insulating water storage device 20. The bottom plate 12 is formed at the lower end of the casing 4. The casing 4 is formed of the bottom plate 12 and the plurality of plate materials 4a, 4b, 4c, 4d, 4e and the like including the front plate 4a. In the vicinity of the lower end of the front plate 4a, a plurality of arrangement holes 6 for inserting various pipes are formed. Moreover, the work hole 8 for inserting a tool is also formed in the lower end of the front plate 4a.

FIG. 2: shows the exploded perspective view of the low temperature type hot water supply apparatus 2 of a present Example typically. In FIG. 2, the casing 4 shows the form which removed the board | plate materials 4b-4e (refer FIG. 1) etc. other than the front board | plate material 4a. As shown in FIG. 2, the frame 10 is formed above the front plate 4a. The frame 10 can be attached with a controller (not shown).

On the upper surface of the bottom plate 12, a small attachment plate 14 and a large attachment plate 16 are formed. Both the small attachment plate 14 and the large attachment plate 16 are provided perpendicularly to the upper surface of the bottom plate 12. Screw holes are formed in the small attachment plate 14 and the large attachment plate 16. The small attachment plate 14 is provided in the vicinity of the front plate 4a, and is provided at a position facing the work hole 8.

As shown in FIG. 2, the heat insulation type water heater 20 is equipped with the water storage tank 22, the foamable heat insulation member 30 which covers the water storage tank 22, and three legs 24a, 24b, 24c. do. The storage tank 22 is a storage tank made of stainless steel, and stores hot water heated by a heat pump (not shown). The water storage tank 22 is formed in substantially columnar shape. The capacity of the storage tank 22 is 100 liters, for example.

Three legs 24a-24c are attached to the outer peripheral surface of the bottom face of the water storage tank 22. As shown in FIG. The three legs 24a to 24c are attached at substantially equal intervals (approximately 120 ° intervals). The board | plate material 26 is fixed between the lower end parts of the two legs 24a and 24b among the three legs 24a-24c. The board | plate material 26 is provided with two screw holes. Moreover, the screw hole is formed in the lower end part of the leg 24c. The heat insulation type water heater 20 is installed on the bottom plate 12 by fixing three legs 24a to 24c to the bottom plate 12.

When installing the heat insulation type water heater 20 on the bottom plate 12, first, the leg 24c and the small attachment plate 14 are arranged side by side, and through the working hole 8 from the outside of the front plate 4a. The tool is inserted to fix the small attachment plate 14 and the leg 24c with a screw. Moreover, the board | plate material 26 and the large attachment plate 16 are arrange | positioned side by side, and the board | plate material 26 and the large attachment plate 16 are fixed with a screw. As a result, the heat insulation type water heater 20 is provided on the bottom plate 12.

The foamable heat insulating member 30 is a heat insulating member covering the water storage tank 22. In this embodiment, the foamable heat insulating member 30 is made of foamed styrol. The foamable heat insulating member 30 includes a bottom surface portion 40, a first cylinder portion 50, a ring portion 60, a second cylinder portion 70, and an upper surface portion 80 in order from the bottom.

The bottom part 40 covers the outer peripheral surface of the bottom face of the water storage tank 22. As shown in sectional drawing of FIG. 3, the bottom face part 40 is formed in substantially hemispherical shape with an upper surface opened. 3, only the cross section of the foamable heat insulation member 30 is shown, and the cross section of the water storage tank 22 is not shown. The inner circumferential surface of the bottom surface portion 40 is attached to contact the outer circumferential surface of the bottom surface of the water storage tank 22. In addition, although not shown, the bottom part 40 is provided with the hole for penetrating the legs 24a-24c provided in the bottom face of the water storage tank 22. As shown in FIG. As shown in FIG. 4, the opening edge part 42 of the bottom part 40 is provided with the level | step difference which can engage with the step of the lower end part (namely, lower end part 52a, 54a) of the 1st cylinder part 50 mentioned later, have. The inner diameter of the stepped portion of the opening edge portion 42 is approximately equal to the outer diameter of the stepped portion of the lower end portion of the first cylinder portion 50 or slightly smaller than the outer diameter of the stepped portion of the lower end portion of the first cylinder portion 50. . Therefore, the step of the opening edge part 42 is engaged with the step of the lower end of the 1st cylinder part 50, and presses and hold | maintains the lower end part of the 1st cylinder part 50 to the storage tank 22 direction. .

As shown in FIG. 2, the 1st cylinder part 50 coat | covers the outer peripheral surface vicinity of the axial direction lower side of the water storage tank 22. As shown in FIG. The first cylinder part 50 has a first left part 52 and a first right part 54. In addition, a through hole 56 is formed in a portion where the first left portion 52 and the first right portion 54 abut. The thermistor (not shown) can be attached to the surface of the water storage tank 22 through the through hole 56. The through hole 56 is blocked by the blocking plate 58. In this embodiment, the obstruction plate 58 is also made of foamed styrol.

The first left portion 52 covers the left portion of the outer circumferential surface near the axially lower side of the water storage tank 22. The lower step part 52a of the first left part 52 is provided with a step which can engage with the step of the opening edge part 42 of the bottom part 40 (refer FIG. 3 and FIG. 4). Moreover, the step which can be engaged with the step of the lower opening edge 62 of the ring part 60 is formed in the upper end part 52b of the 1st left part 52 (refer FIG. 3 and FIG. 5). 7, the fixing part 53 is formed in the inner peripheral surface of the 1st left part 52, and the fixing part 53 is equipped with the vacuum heat insulating material 100. As shown in FIG.

The vacuum insulator 100 sandwiches a porous core material between two films, welds two films in a circumferential range around the embedded core material, and seals the existence range of the core material in a vacuum state. will be. In general, the heat insulating performance of the vacuum insulator 100 is higher than the heat insulating performance of the foamable heat insulating member 30.

Moreover, the step (not shown) which can engage with the step | step (not shown) of the side end part 54c of the 1st right part 54 is formed in the side end part 52c of the 1st left part 52. As shown in FIG. Moreover, the notch part 52d is formed in the side end part 52c of the 1st left part 52. As shown in FIG.

The first right portion 54 covers the right portion of the outer circumferential surface near the bottom in the axial direction of the water storage tank 22. The first right part 54 has a structure substantially the same as the first left part 52. That is, the step which can engage with the step of the opening edge part 42 of the bottom face part 40 is formed also in the lower end part of the 1st right part 54 (refer FIG. 3 and FIG. 4). Moreover, the step which can be engaged with the step of the lower opening edge 62 of the ring part 60 is also formed in the upper end part 54b of the 1st right part 54 (refer FIG. 3 and FIG. 5). Moreover, as shown in FIG. 7, the fixing part 55 is formed in the inner peripheral surface of the 1st right part 54, and the fixing part 55 is equipped with the vacuum heat insulating material 100. As shown in FIG. The side end part 54c of the 1st right side part 54 is provided with the step (not shown) which can engage with the step | step (not shown) of the side end part 52c of the 1st left side part 52. As shown in FIG. The notch part 54d is also formed in the side end part 54c of the 1st right part part 54. As shown in FIG.

By combining the first left portion 52 and the first right portion 54, the side end portion 52c of the first left portion 52 and the side end portion 54c of the first right portion 54 are engaged. . Thereby, the notch part 52d of the 1st left part 52 and the notch part 54d of the 1st right part 54 are combined, and the through-hole 56 is formed.

The ring portion 60 is an annular member (see FIG. 7). The lower opening edge 62 of the ring portion 60 is provided with a step that can engage with the step of the upper end of the first cylindrical portion 50 (that is, the upper ends 52b and 54b) (see FIG. 5). The inner diameter of the stepped portion of the lower opening edge 62 of the ring portion 60 is approximately equal to the outer diameter of the stepped portion of the upper end portion of the first cylinder portion 50 or slightly smaller than the outer diameter of the stepped portion of the upper end portion of the first cylinder portion 50. small. In addition, the upper opening edge 64 of the ring portion 60 is provided with a step that can be engaged with the step of the lower end of the second cylindrical portion 70 (that is, the lower ends 72a and 74a), which will be described later (see FIG. 5). . The inner diameter of the stepped portion of the upper opening edge 64 of the ring portion 60 is approximately equal to the outer diameter of the stepped portion of the lower end of the second cylinder portion 70 or slightly smaller than the outer diameter of the stepped portion of the lower portion of the second cylinder portion 70. small.

That is, the step of the lower opening edge 62 of the ring portion 60 is engaged with the step of the upper end portions (upper portions 52b, 54b) of the first cylinder portion 50, and the upper end portion of the first cylinder portion 50. Is pressed against the water storage tank 22 and maintained. Similarly, the step of the upper opening edge 64 of the ring portion 60 is engaged with the step of the lower end portion (lower end portions 72a, 74a) of the second cylinder portion 70, and the lower end portion of the second cylinder portion 70 is It is pressed against the water storage tank 22 and maintained.

As shown in FIG. 2, the 2nd cylinder part 70 coat | covers the outer peripheral surface vicinity of the upper direction of the axial direction of the storage tank 22. As shown in FIG. The second cylinder portion 70 includes a second left portion 72 and a second right portion 74. In addition, two through holes 76 are formed in a portion where the second left portion 72 and the second right portion 74 abut. The function of the through hole 76 is the same as that of the through hole 56 described above. The two through holes 76 are closed by the blocking plate 78, respectively. The blocking plate 78 is also formed of foamed styrol.

The second left portion 72 covers the left portion of the outer circumferential surface near the axially upper side of the water storage tank 22. In the lower end portion 72a of the second left portion 72, a step that is engaged with the step of the upper opening edge 64 of the ring portion 60 is formed (see Figs. 3 and 5). Moreover, the step which can engage with the step of the opening edge part 82 of the upper surface part 80 mentioned later is formed in the upper end part 72b of the 2nd left part 72 (refer FIG. 3 and FIG. 6). 8, the fixing part 73 is formed in the inner peripheral surface of the 2nd left part 72, and the vacuum insulation material 100 is provided in the fixing part 73. As shown in FIG.

Moreover, the step (not shown) which can engage with the step (not shown) of the side end part 74c of the 2nd right part 74 is formed in the side end part 72c of the 2nd left part 72. As shown in FIG. Two notches 72d are formed in the side end portion 72c of the second left portion 72.

The second right portion 74 covers the right portion of the outer circumferential surface near the axial upper side of the water storage tank 22. The second right portion 74 has a configuration substantially the same as that of the second left portion 72. That is, the step which can engage with the step of the upper opening edge 64 of the ring part 60 is also formed in the lower end of the 2nd right part 74 (refer FIG. 3 and FIG. 5). Moreover, the step which can be engaged with the step of the opening edge part 82 of the upper surface part 80 mentioned later is also formed in the upper end part 74b of the 2nd right part 74 (refer FIG. 3 and FIG. 6). 8, the fixing part 75 is formed also in the inner peripheral surface of the 2nd right part 74, and the fixing part 75 is equipped with the vacuum heat insulating material 100. As shown in FIG. The side end part 74c of the 2nd right side part 74 is provided with the step (not shown) which can engage with the step | step (not shown) of the side end part 72c of the 2nd left side part 72. As shown in FIG. Two notches 74d are also formed in the side end portion 74c of the second right portion 74.

By combining the second left portion 72 and the second right portion 74, the side end portion 72c of the second left portion 72 and the side end portion 74c of the second right portion 74 are engaged. . As a result, two notches 72d of the second left portion 72 and two notches 74d of the second right portion 74 are combined with each other to form two through holes 76.

The upper surface portion 80 covers the outer circumferential surface of the upper surface of the water storage tank 22. As shown in the cross-sectional view of FIG. 3, the upper surface portion 80 is formed in a substantially hemispherical shape with a lower surface opened. The inner circumferential surface of the upper surface portion 80 is attached to contact the outer circumferential surface of the upper surface of the water storage tank 22. As shown in FIG. 6, the opening edge part 82 of the upper surface part 80 is provided with the step | step difference which can engage with the step of the upper end part (namely, upper end part 72b, 74b) of the said 2nd cylinder part 70, The inner diameter of the stepped portion of the opening edge portion 82 is approximately equal to the outer diameter of the stepped portion of the upper end portion of the second cylinder portion 70 or is larger than the outer diameter of the stepped portion of the lower end portion of the second cylinder portion 70. Therefore, the step of the opening edge portion 82 is engaged with the step of the upper end of the second cylinder portion 70, and the upper end of the second cylinder portion 70 is pressed in the direction of the water storage tank 22. The upper surface portion 80 is provided with an insertion through hole 84 for penetrating the pipe and a through hole (not shown) for attaching a thermistor to the upper surface of the water storage tank 22.

In addition, as shown in FIG. 3, each member of the bottom part 40, the 1st cylinder part 50, the ring part 60, the 2nd cylinder part 70, and the upper surface part 80 which cover the water storage tank 22 is shown. The surface of the connection portion of the substantially flush structure, the irregularities are not formed. For this reason, when arrange | positioning piping along the surface of the foamable heat insulation member 30, it becomes difficult to form unnecessary space between the surface of the foamable heat insulation member 30 and a piping.

Subsequently, in the present embodiment, the outer circumferential surface of the water storage tank 22 is formed of the foamed heat insulating member 30 (the bottom portion 40, the first cylinder portion 50, the ring portion 60, the second cylinder portion 70, and The order of covering by the upper surface part 80} is demonstrated with reference to FIG. 7, FIG.

First, the outer peripheral surface of the bottom face of the storage tank 22 is covered with the bottom face part 40. At this time, the legs 24a to 24c provided on the bottom surface of the water storage tank 22 protrude outward from a hole (not shown) formed in the bottom surface portion 40.

In addition, in this embodiment, the board | substrate 26 (refer FIG. 2) is attached to the legs 24a and 24b, the board | substrate 26 and the big attachment plate 16 are fixed, and the leg 24c and the small attachment board are shown. Fixing of (14) is performed after attaching the bottom face part 40 at least.

Next, as shown in FIG. 7, the 1st left part 52 and the 1st right part 54 are attached. Specifically, first, the inner circumferential surface of the first left portion 52 and the inner circumferential surface of the first right portion 54 cover the outer circumferential surface of the storage tank 22, and the side end portion 52c of the first left portion 52 is provided. And the side end portion 54c of the first right end portion 54 are brought into contact with each other to engage the steps between the side end portions 52c and 54c. Thereby, the 1st cylinder part 50 is formed. Next, the step of the lower end part (namely, lower end part 52a, 54a) of the 1st cylinder part 50 is engaged with the step of the opening edge part 42 of the bottom part 40 (refer FIG. 4).

Next, as shown in FIG. 7, the ring part 60 is attached. Specifically, the step of the lower opening edge 62 of the ring portion 60 is engaged with the step of the upper ends of the first cylindrical portions 50 (that is, the upper ends 52b and 54b) (see FIG. 5).

As a result, the lower end part (that is, lower end part 52a, 54a) of the 1st cylinder part 50 is pressed and maintained by the opening edge part 42 of the bottom part 40 in the direction of the storage tank 22, The upper end portions (that is, the upper end portions 52b and 54b) are pressed and held in the direction of the storage tank 22 by the lower opening edge 62 of the ring portion 60. Therefore, the 1st cylinder part 50 is maintained in the state which coat | covered the outer peripheral surface of the water storage tank 22. As shown in FIG. At this time, the vacuum insulator 100 provided on the inner circumferential surfaces of the first left portion 52 and the first right portion 54 is also maintained in a state where they are pushed to the outer circumferential surface of the water storage tank 22, respectively.

Next, the through hole 56 formed in the first cylinder part 50 is closed by the blocking plate 58.

Next, as shown in FIG. 8, the 2nd left side part 72 and the 2nd right side part 74 are attached. Specifically, the inner circumferential surface of the second left portion 72 and the inner circumferential surface of the second right portion 74 cover the outer circumferential surface of the storage tank 22, and the side end portions 72c and the second end portions of the second left portion 72 are formed. 2 The side end part 74c of the right side part 74 is made to abut, and the step | step difference of the side end parts 72c and 74c is engaged. Thereby, the 2nd cylinder part 70 is formed. Next, the step of the lower end of the second tube part 70 (that is, the lower ends 72a and 74a) is engaged with the step of the upper opening edge 64 of the ring part 60 (see FIG. 5).

Next, the outer peripheral surface of the upper surface of the storage tank 22 is covered by the upper surface portion 80. At this time, the step of the opening edge portion 82 of the upper surface portion 80 is engaged with the step of the upper end portion (i.e., the upper end portion 72b, 74b) of the second cylinder portion 70 (see FIG.

As a result, the second cylinder portion 70 is pressed at the lower end portion (that is, the lower end portions 72a, 74a) by the upper opening edge 64 of the ring portion 60 in the storage tank 22 direction, and The upper end portions (that is, the upper end portions 72b and 74b) are pressed and held in the direction of the storage tank 22 by the opening edge portion 82 of the upper surface portion 80. Therefore, the 2nd cylinder part 70 is maintained in the state which coat | covered the outer peripheral surface of the water storage tank 22. As shown in FIG. At this time, the vacuum insulator 100 provided on the inner circumferential surfaces of the second left portion 72 and the second right portion 74 is also maintained in a state of being pushed against the outer circumferential surface of the water storage tank 22, respectively.

Finally, the two through holes 76 formed in the second cylinder portion 70 are closed by the blocking plate 78, respectively.

In the above, the structure of the low temperature type hot water supply apparatus 2 of this embodiment was demonstrated. As described above, in the present embodiment, the foamable heat insulating member 30 includes the first cylindrical portion 50 covering the outer circumferential surface of the bottom of the storage tank 22 in the axial direction, and the outer peripheral surface of the bottom of the storage tank 22 in the axial direction. The 2nd cylinder part 70 which covers this is provided, and the 1st cylinder part 50 and the 2nd cylinder part 70 are provided with the left part 52 and 72 and the right part 54 and 74, respectively. In the present embodiment, the first cylindrical portion 50 (the first left portion 52 and the first right portion 54), and the second cylindrical portion 70 (the second left portion 72 and the second right portion 74) } Is pressed and held by the bottom surface part 40, the ring part 60, and the upper surface part 80 in the water storage tank 22 direction. Therefore, according to the heat-insulating water storage device 20 of this embodiment, even if the water storage tank 22 is enlarged, for example, the 1st cylindrical part 50 (the 1st left part 52 and the 1st right part) of comparatively small size is small. (54)} and the second cylinder portion 70 (the second left portion 72 and the second right portion 74) may be combined to cover the storage tank 22. Therefore, like the foamable heat insulation member in the conventional heat-insulating water storage device, only the two parts of the right part which cover the front half of the right half of the outer peripheral surface of a water storage tank, and the left part which cover the left half front of the outer peripheral surface of a water storage tank are stored only. There is no need to cover the tank. Therefore, according to the heat insulation type water heater 20 of this embodiment, even when the water storage tank 22 is large, for example, it can suppress that the work efficiency of the detachable work of the foamable heat insulation member 30 falls. have.

In addition, in the present embodiment, the front surface of the outside of the storage tank 22 is formed by the first cylinder portion 50, the second cylinder portion 70, the bottom surface portion 40, the ring portion 60, and the upper surface portion 80. Can be covered. Therefore, it is possible to effectively prevent the temperature of the hot water stored in the water storage tank 22 from lowering.

As mentioned above, although the Example of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples exemplified above.

(Modification 1) In the above-described embodiment, the two cylindrical portions 50 and 70 cover the outer circumferential surface of the substantially columnar storage tank 22, and there is one between the two cylindrical portions 50 and 70. It is held by the ring part 60. Not only this but the outer peripheral surface of the water storage tank 22 may be covered by three or more cylinder parts, and you may hold | maintain between each cylinder part by a ring part. Even in that case, the lower end part of the cylinder part arrange | positioned at the lowest part of the axial direction of the storage tank 22 is hold | maintained by the bottom face part 40, and the upper end part of the cylinder part arrange | positioned at the uppermost part of the axial direction of the storage tank 22 is carried out. It is preferable to hold | maintain by the upper surface part 80.

(Modification 2) In the above-described embodiment, as shown in FIG. 4, the step of the lower end portions (ie, lower end portions 52a and 54a) of the first cylinder portion 50 and the opening edge portion of the bottom surface portion 40 ( The steps of 42) are all formed in a rectangle. Not only this, but the taper part may be formed in the level | step difference of the lower end part (namely, lower end part 52a, 54a) of the 1st cylinder part 50, and the step | step difference of the opening edge part 42 of the bottom face part 40. FIG. . By forming the tapered portion, the lower end portion of the first cylinder portion 50 and the opening edge portion 42 of the bottom surface portion 40 can be smoothly engaged. Similarly, a tapered portion may be formed at the steps of the upper end of the first cylinder part 50 (that is, the upper ends 52b and 54b) and the step of the lower opening edge 62 of the ring part 60. A tapered portion may be formed at the step of the lower end of the second cylinder part 70 (that is, the lower ends 72a, 74a) and the step of the upper opening edge 64 of the ring part 60. Moreover, the taper part may be formed in the level | step difference of the upper end part (namely, upper end part 72b, 74b) of the 2nd cylinder part 70, and the step | step difference of the opening edge part 82 of the upper surface part 80. As shown in FIG.

2-water heater 4-casing
4a-front plate 4b, 4c, 4d, 4e-plate
6-Placement Hole 8-Work Hole
10-Frame 12-Base Plate
14-small attachment plate 16-large attachment plate
20-adiabatic water storage device 22-water storage tank
24a, 24b, 24c-legs 26-plates
30-Foam insulation 40-Bottom part
42-opening edge 50-first tube
52-First left part 52a-Lower part
52b-Top 52c-Side End
52d-notches 53-fixings
54-First Right Side 54a-Bottom
54b-upper end 54c-side end
54d-notches 55-fixings
56-through hole 58-closure plate
60-Ring 62-Bottom opening edge
64-upper opening edge 70-second tube
72-second left 72a-bottom
72b-upper end 72c-side end
72d-notches 73-fixings
74-second right 74a-bottom
74b-upper part 74c-side end
74d-notches 75-fixings
76-through hole 78-obstruction plate
80-Top 82-Opening Edge
84-through hole 100-vacuum insulator

Claims (2)

Insulated water storage device,
It is provided with a columnar storage tank, the foam insulation material which covers a storage tank, and the vacuum insulation member arrange | positioned in at least one part between a storage tank and a foam insulation material,
The foamable heat insulating member has a first cylinder portion, a second cylinder portion, a bottom portion, a ring portion, and an upper surface portion,
The 1st cylinder part is a cylindrical part which covers the outer peripheral surface of one part of the axial direction of a water storage tank, and has a 1st left part and a 1st right part,
The 2nd cylinder part is a cylindrical part which covers the outer peripheral surface of another part of the axial direction of a water storage tank, and has a 2nd left part and a 2nd right part,
The bottom portion covers the outer circumferential surface of the bottom surface of the storage tank, and presses and holds the lower end of the first left portion and the lower end of the first right portion in the direction of the storage tank,
The ring portion presses and holds the upper end of the first left portion and the upper end of the first right portion in the storage tank direction, and presses and holds the lower end of the second left portion and the lower end of the second right portion in the storage tank direction.
The upper surface portion covers the outer circumferential surface of the upper surface of the storage tank, and presses and holds the upper end of the second left portion and the upper end of the second right portion in the storage tank direction.
A hot water heating device according to claim 1, comprising a hot water supply path for supplying hot water in the hot water tank to a hot water use point.

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