JP2015215134A - Storage type water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage type water heater that can improve the degree of freedom of arrangement of components while reliably restraining damage to a vacuum heat insulating material that covers a hot water storage tank.SOLUTION: A storage type water heater according to the present invention comprises: a hot water storage tank 1; a vacuum heat insulating material 20 that covers the hot water storage tank 1; a molded heat insulating material (an outside body part molded heat insulating material 17) that covers the hot water storage tank 1 from the outside of the vacuum heat insulating material 20; and protective parts (a first protective part 50, a second protective part 60, and a third protective part 70) attached to parts (a first opening part 17a, a second opening part 17c, a third opening part 17f) in which the molded heat insulating material does not cover the vacuum heat insulating material, and including a material different from the molded heat insulating material.

Description

  The present invention relates to a hot water storage type water heater.

  Hot water obtained by heating water with a heating means such as a heat pump is stored in a hot water storage tank, and hot water is supplied from this hot water storage tank to necessary places such as a bathtub, shower, kitchen or washroom faucet when necessary. A hot water storage type water heater configured in the above is widely used. In order to keep the hot water in the hot water storage tank, a heat insulating material is arranged around the hot water storage tank. A vacuum heat insulating material may be used as this heat insulating material. The vacuum heat insulating material has an extremely excellent heat insulating property, but if the internal vacuum state is lost due to damage to the outer skin material, the heat insulating property is greatly deteriorated. For this reason, the technique which prevents the vacuum heat insulating material from exposing by arrange | positioning in combination with the shaping | molding heat insulating material which covers a vacuum heat insulating material, and suppresses the failure | damage of a vacuum heat insulating material is proposed conventionally.

  In patent document 1 and patent document 3, the opening part is provided in the shaping | molding heat insulating material of the part which covers a vacuum heat insulating material, and the presence or absence of damage of a vacuum heat insulating material can be confirmed by visually or palpating a vacuum heat insulating material from the said opening part. And the structure which provided the cover member which can be fitted to the said opening part is disclosed. Patent Document 2 discloses a configuration in which a vacuum heat insulating material is provided on a lid member that fits into an opening of a molded heat insulating material.

JP2013-88079A JP 2011-149580 A JP 2012-112606 A

  Equipment such as pipes, pumps, valves, and heat exchangers are arranged outside the heat insulating material covering the hot water storage tank. When the installation space of these devices interferes with the molded heat insulating material, it is necessary to delete a part of the shape of the molded heat insulating material so as to avoid the device. However, when the deleted part of the molded heat insulating material covers the vacuum heat insulating material, the vacuum heat insulating material is exposed, and breakage of the vacuum heat insulating material cannot be suppressed.

  The present invention has been made in order to solve the above-described problems, and provides a hot water storage type water heater capable of improving the degree of freedom of arrangement of constituent devices while reliably suppressing damage to the vacuum heat insulating material covering the hot water storage tank. The purpose is to provide.

  The hot water storage type water heater according to the present invention includes a hot water storage tank, a vacuum heat insulating material that covers the hot water storage tank, a molded heat insulating material that covers the hot water storage tank from the outside of the vacuum heat insulating material, and a place where the molded heat insulating material does not cover the vacuum heat insulating material. And a protection component having a material different from that of the molded heat insulating material.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve the freedom degree of arrangement | positioning of a component apparatus, suppressing the damage of the vacuum heat insulating material which covers a hot water storage tank reliably.

It is a block diagram (front view) which shows the hot water storage type water heater of Embodiment 1 of this invention. It is a disassembled perspective view which shows the structure of the hot water storage tank with which the hot water storage type water heater of Embodiment 1 of this invention is equipped, and a heat insulating material. It is a perspective view which shows the state which mounted | wore the hot water storage tank with the heat insulating material in Embodiment 1 of this invention. It is sectional drawing which shows the state which mounted | wore the hot water storage tank with the heat insulating material in Embodiment 1 of this invention. It is a perspective view which shows the state before attaching a 1st protection component to the 1st opening part of the outer side trunk | drum molded heat insulating material in Embodiment 1 of this invention. It is a perspective view of the 1st protection component in Embodiment 1 of this invention. It is a perspective view which shows the state after attaching a 1st protection component to the 1st opening part of the outer side trunk | mold molded heat insulating material in Embodiment 1 of this invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is the perspective view which looked at the outer side trunk | drum molded heat insulating material in Embodiment 1 of this invention from the inner peripheral surface side. It is a perspective view of the 2nd protection component in Embodiment 1 of this invention. It is a perspective view which shows the state before attaching a 2nd protection component to the 2nd opening part of the outer side trunk | drum molded heat insulating material in Embodiment 1 of this invention. It is a perspective view which shows the modification of the outer trunk | drum molded heat insulating material and 2nd protection component in Embodiment 1 of this invention. It is a perspective view which shows the state before attaching a 3rd protection component to the 3rd opening part of the outer side trunk | drum molded heat insulating material in Embodiment 1 of this invention. It is a perspective view of the 3rd protection component in Embodiment 1 of this invention. It is the perspective view which looked at the auxiliary | assistant component used in order to fix the 3rd protection component in Embodiment 1 of this invention to an outer trunk | drum molded heat insulating material from the back surface side. It is a perspective view of the 1st protection component with which the hot water storage type water heater of Embodiment 2 of this invention is provided. In Embodiment 2 of this invention, it is a perspective view which shows the state before arrange | positioning a component apparatus in the position of the 1st protection component fixed to the outer trunk | drum molded heat insulating material.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the element which is common in each figure, and the overlapping description is abbreviate | omitted.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram (front view) showing a hot water storage type water heater according to Embodiment 1 of the present invention. As shown in FIG. 1, a hot water storage type hot water supply apparatus 100 according to the first embodiment includes a hot water storage tank unit 30 in which a hot water storage tank 1 is incorporated, and a heating unit 4 that heats water to generate high temperature hot water. The hot water storage tank unit 30 and the heating means 4 are connected by a water inlet pipe 3 and a hot water outlet pipe 5. The hot water storage tank unit 30 is connected to a water supply pipe 2 for supplying water from a water source such as an external water supply, a bath hot water supply pipe 6, and a hot water supply pipe 7. The water stored in the hot water storage tank 1 is led out from the lower part of the hot water storage tank 1 and is conveyed to the heating means 4 through the incoming water pipe 3. The heating means 4 is comprised with the heat pump unit which heats water using a refrigerating cycle, for example. The water conveyed to the heating means 4 is heated to become hot water. The hot water returns to the hot water storage tank unit 30 through the hot water piping 5 and flows into the hot water storage tank 1 from the upper part of the hot water storage tank 1 and is stored therein. Hot water is stored in the hot water storage tank 1 by forming a temperature stratification in which the upper side is hot and the lower side is low. The hot water storage tank unit 30 is provided with a mixing valve for adjusting the temperature by mixing hot hot water taken out from the hot water storage tank 1 and water supplied from the water supply pipe 2. The hot water adjusted in temperature by the mixing valve is supplied to the bath tub 200 through the bath hot water supply pipe 6, or is supplied to the hot water supply terminals such as a shower, a kitchen and a bathroom faucet through the hot water supply pipe 7. The The heating means in the present invention is not limited to the above-described configuration, and for example, a heating means such as an electric heater may be disposed in the hot water storage tank 1.

  The hot water storage tank unit 30 includes a substantially rectangular parallelepiped box-shaped outer case (housing) constituted by the outer case bottom plate 9, the outer case side plate 10, the outer case top plate 11, and the like. The outer case side plate 10 and the outer case top plate 11 and the outer case side plate 10 and the outer case bottom plate 9 are fastened with fastening parts such as screws. The hot water storage tank 1 is housed in the outer case in a state covered with a heat insulating material to be described later in order to suppress heat dissipation. A plurality of tank unit legs 12 are installed below the outer case. The hot water storage tank unit 30 is supported and fixed to the ground or the pedestal by these tank unit legs 12. The outer case side plate 10 is provided on four surfaces, ie, the front surface, the rear surface, the right side surface, and the left side surface. FIG. 1 shows a state where the front case case side plate 10 is removed. Various devices such as pipes, pumps, valves, and heat exchangers are arranged in a space between the heat insulating material that covers the hot water storage tank 1 and the outer case.

  FIG. 2 is an exploded perspective view showing configurations of the hot water storage tank 1 and the heat insulating material provided in the hot water storage type hot water heater 100 according to Embodiment 1 of the present invention. As shown in FIG. 2, the hot water storage tank 1 is supported on the outer case bottom plate 9 by a plurality of tank legs 8. The tank unit leg 12 described above is installed under the outer case bottom plate 9. The hot water storage tank 1 includes an inner upper molded heat insulating material 13, a lower molded heat insulating material 14, an inner trunk molded heat insulating material 15, an inner trunk molded heat insulating material 16, an outer trunk molded heat insulating material 17, an outer trunk molded heat insulating material 18, It is covered with an outer upper molded heat insulating material 19 and a vacuum heat insulating material 20. Each of the molded heat insulating materials 13 to 19 is preferably a foamable molded heat insulating material made of, for example, foamed polystyrene, or a foamable molded heat insulating material made of a material having a heat insulating performance equal to or higher than that of foamed polystyrene.

  The vacuum heat insulating material 20 wraps a core material (core material) formed by processing foam, powder, fiber, or the like into a sheet with an outer skin material made of a gas barrier film (plastic film, plastic metal laminate film, etc.). The inside of the casing is in a vacuum state, and the peripheral portion of the outer skin material is thermally welded and sealed. The vacuum heat insulating material 20 has extremely high heat insulating performance. However, if the inner vacuum state is lost due to damage to the outer skin material of the vacuum heat insulating material 20, the heat insulating performance is significantly lowered. In the following description, the loss of the internal vacuum state due to damage to the outer skin material of the vacuum heat insulating material 20 is referred to as the vacuum heat insulating material 20 being damaged.

  The inner upper molded heat insulating material 13 covers the upper part of the hot water storage tank 1. It is desirable that the inner upper molded heat insulating material 13 is in close contact with the upper part of the hot water storage tank 1. The lower molded heat insulating material 14 covers the lower part of the hot water storage tank 1. It is desirable that the lower molded heat insulating material 14 is in close contact with the lower part of the hot water storage tank 1. The inner body molded heat insulating material 15 and the inner body molded heat insulating material 16 cover the body of the hot water storage tank 1. It is desirable that the inner body portion molded heat insulating material 15 and the inner body portion molded heat insulating material 16 are in close contact with the body portion of the hot water storage tank 1. The vacuum heat insulating material 20 covers the body of the hot water storage tank 1 from the outside of the inner body forming heat insulating material 15 and the inner body forming heat insulating material 16. The vacuum heat insulating material 20 is arrange | positioned so that a cylindrical surface may be made. It is desirable that the vacuum heat insulating material 20 be in close contact with the inner body molded heat insulating material 15 and the inner body molded heat insulating material 16. In the first embodiment, two vacuum heat insulating materials 20 are provided, and each vacuum heat insulating material 20 covers almost half of the circumference, thereby covering the trunk of the hot water storage tank 1 over almost the entire circumference. The number of the vacuum heat insulating materials 20 in the present invention is not limited to two, and may be constituted by one or may be divided into three or more.

  The outer body molded heat insulating material 17 and the outer body molded heat insulating material 18 cover the body of the hot water storage tank 1 from the outside of the vacuum heat insulating material 20. It is desirable that the outer body molded heat insulating material 17 and the outer body molded heat insulating material 18 are in close contact with the vacuum heat insulating material 20. The outer upper molded heat insulating material 19 has an annular shape and covers the outer periphery of the inner upper molded heat insulating material 13. The outer upper molded heat insulating material 19 is preferably in close contact with the inner upper molded heat insulating material 13.

  The outer body molded heat insulating material 17 has a first opening 17a, a second opening 17c, and a third opening 17f. The 1st opening part 17a, the 2nd opening part 17c, and the 3rd opening part 17f are the holes (window) which penetrate the inner peripheral side and outer peripheral side of the outer trunk | drum molded heat insulating material 17. FIG. The first opening 17a, the second opening 17c, and the third opening 17f are places where the vacuum heat insulating material 20 is not covered with the outer body forming heat insulating material 17. A first protection component 50, a second protection component 60, and a third protection component 70, which will be described later, are attached to the first opening 17a, the second opening 17c, and the third opening 17f, respectively.

  FIG. 3 is a perspective view showing a state where the above-described heat insulating material is attached to the hot water storage tank 1. FIG. 4 is a cross-sectional view showing a state where the above-described heat insulating material is attached to the hot water storage tank 1. In FIG. 4, a heat insulating material is represented by a cross section, and the hot water storage tank 1 is represented without a cross section. As shown in FIG. 3, the first protective component 50, the second protective component 60, and the first protective component 50 that protect the vacuum heat insulating material 20 at the positions of the first opening 17a, the second opening 17c, and the third opening 17f. Three protective parts 70 are respectively attached. The first protection component 50, the second protection component 60, and the third protection component 70 have a material different from that of the outer body portion molded heat insulating material 17. The material of the first protective component 50, the second protective component 60, and the third protective component 70 is preferably harder than the material of the outer body molded heat insulating material 17. That is, it is desirable that the elastic modulus of the material of the first protective component 50, the second protective component 60, and the third protective component 70 is higher than the elastic modulus of the material of the outer body molded heat insulating material 17. The material of the first protective component 50, the second protective component 60, and the third protective component 70 is preferably, for example, a resin material (plastic), but may be a metal material. In the first embodiment, the first protection component 50, the second protection component 60, and the third protection component 70 are formed in a thin plate shape.

  The first protective component 50, the second protective component 60, and the third protective component 70 cover the vacuum heat insulating material 20 with the first opening 17a, the second opening 17c, and the third opening 17f, respectively. Thereby, the vacuum heat insulating material 20 is not exposed in the 1st opening part 17a, the 2nd opening part 17c, and the 3rd opening part 17f. In the first opening 17a, the second opening 17c, and the third opening 17f, components such as pipes, pumps, valves, heat exchangers, etc. are in direct contact with the vacuum heat insulating material 20, or the operator vacuums. Direct contact with the heat insulating material 20 is prevented by the first protection component 50, the second protection component 60, and the third protection component 70, respectively. For this reason, the damage of the vacuum heat insulating material 20 by damaging the outer skin of the vacuum heat insulating material 20 can be suppressed reliably. In particular, since the first protective component 50, the second protective component 60, and the third protective component 70 are made of a material different from the outer body molded heat insulating material 17, the vacuum heat insulating material 20 can be more reliably protected. Therefore, damage to the vacuum heat insulating material 20 can be more reliably suppressed.

  The outer surface of the first protective component 50 has a region that forms a recess with respect to the outer surface of the outer body molding heat insulating material 17 adjacent to the first protective component 50. A part of components such as a pipe, a pump, a valve, and a heat exchanger can be disposed in the recess. Thereby, interference with the installation space of the said apparatus and the outer trunk | drum molded heat insulating material 17 can be prevented, and the said apparatus can be arrange | positioned in space saving. In this case, contact between the device and the vacuum heat insulating material 20 is surely prevented by the first protective component 50, so there is no possibility of damaging the vacuum heat insulating material 20.

  The outer surface of the second protective component 60 has a concave portion with respect to the outer surface of the outer body forming heat insulating material 17 adjacent to the second protective component 60. A part of components such as a pipe, a pump, a valve, and a heat exchanger can be disposed in the recess. Thereby, interference with the installation space of the said apparatus and the outer trunk | drum molded heat insulating material 17 can be prevented, and the said apparatus can be arrange | positioned in space saving. In this case, since the contact between the device and the vacuum heat insulating material 20 is reliably prevented by the second protective component 60, there is no possibility of damaging the vacuum heat insulating material 20.

  The outer surface of the third protective component 70 has a region that forms a recess with respect to the outer surface of the outer body forming heat insulating material 17 in the portion adjacent to the third protective component 70. A part of components such as a pipe, a pump, a valve, and a heat exchanger can be disposed in the recess. Thereby, interference with the installation space of the said apparatus and the outer trunk | drum molded heat insulating material 17 can be prevented, and the said apparatus can be arrange | positioned in space saving. In this case, contact between the device and the vacuum heat insulating material 20 is surely prevented by the third protective component 70, so there is no possibility of damaging the vacuum heat insulating material 20.

  When the vacuum heat insulating material 20 is not damaged, the heat insulating performance of the vacuum heat insulating material 20 is extremely high. Although the outer body forming heat insulating material 17 does not cover the hot water storage tank 1 at the positions of the first opening 17a, the second opening 17c, and the third opening 17f, the high heat insulating performance of the vacuum heat insulating material 20 allows the first opening to be opened. Heat leakage from the portion 17a, the second opening 17c, and the third opening 17f can be reliably suppressed.

  FIG. 5 is a perspective view showing a state before the first protective component 50 is attached to the first opening 17 a of the outer body molded heat insulating material 17. FIG. 6 is a perspective view of the first protective component 50. FIG. 7 is a perspective view showing a state after the first protective component 50 is attached to the first opening 17 a of the outer body molded heat insulating material 17. 8 is a cross-sectional view taken along line AA in FIG. 9 is a cross-sectional view taken along line BB in FIG.

  As shown in FIG. 5, after assembling the outer body molded heat insulating material 17 to the hot water storage tank 1 from the outside of the vacuum heat insulating material 20, the first protective component 50 is first inserted from the outer surface side of the outer body molded heat insulating material 17. The first protective component 50 can be attached by press-fitting into the opening 17a. During the press-fitting, the first protective component 50 is elastically deformed, and the first protective component 50 is fixed by the deformation of the first protective component 50 returning to the original after the press-fitting.

  As shown in FIG. 6, the first protective component 50 includes a protective surface 50a and a flange 50b provided on each of the four sides of the protective surface 50a. The protective surface 50a has a surface shape substantially the same as that of the first opening 17a. Since the protective surface 50a covers the vacuum heat insulating material 20 with the first opening 17a, the vacuum heat insulating material 20 in the first opening 17a can be protected. Like the structure of illustration, the protective surface 50a may be curving so that the outer peripheral surface of the vacuum heat insulating material 20 arrange | positioned cylindrically may be followed. The flange 50b protrudes in an eaves shape toward the outer surface side of the protective surface 50a.

  As shown in FIGS. 8 and 9, the outer body molded heat insulating material 17 has a step 17 b formed on the inner periphery of the first opening 17 a. By fixing the tip of the flange 50b to the step 17b, the first protective component 50 is fixed so as not to be detached from the first opening 17a. In a state where the first protective component 50 is fixed, the protective surface 50a contacts or approaches the vacuum heat insulating material 20.

  When the first protective component 50 is press-fitted into the first opening 17a, the first protective component 50 is elastically deformed so that the flange 50b is tilted inward, whereby the first protective component 50 is inserted into the first opening 17a. Can be inserted (press-fit). When the tip of the flange 50b of the inserted first protective component 50 reaches the position of the step 17b, the flange 50b is restored to its original shape, and the flange 50b is engaged with the step 17b (the state shown in FIGS. 8 and 9). Thus, the first protective component 50 is fixed.

  The flange 50 b and the step 17 b correspond to a fixing portion that fixes the first protective component 50 to the outer body portion molded heat insulating material 17. In the first embodiment, since the fixing portion is provided in the outer body molding heat insulating material 17 and the first protective component 50, the outer body molding heat insulating material 17 is used without using a fixing member such as an adhesive tape. The first protective component 50 can be fixed.

  In the present invention, the first protective component 50 is fixed to the outer body molded heat insulating material 17 by providing the outer body molded heat insulating material 17 and the first protective component 50 with a shape that functions as a fixing portion. You may comprise as follows. Moreover, in this invention, you may fix the 1st protection component 50 to the outer trunk | drum shaping | molding heat insulating material 17 by using fixing members, such as an adhesive tape, for example.

  In the first embodiment, after the first protective component 50 is fixed to the outer body molded heat insulating material 17 as described above, the first protective component 50 is removed from the outer surface side of the outer body molded heat insulating material 17. It is not possible. For this reason, even if it receives the influence of the vibration etc. by an earthquake, for example, it can prevent reliably that the 1st protection component 50 falls out from the 1st opening part 17a for a long period of time.

  In the first embodiment, the thickness of the first protective component 50 (the thickness of the protective surface 50a) is equal to the thickness of the outer trunk molded heat insulating material 17 (the outer trunk molded thermal insulation of the portion adjacent to the first protective component 50). Smaller than the thickness of the material 17. Thus, by reducing the thickness of the first protective component 50, the depth of the recess formed by the outer surface of the protective surface 50 a of the first protective component 50 is increased with respect to the outer surface of the outer body molded heat insulating material 17. it can. Therefore, when a part of constituent devices such as pipes, pumps, valves, and heat exchangers are arranged in the recess, the installation space for the devices can be further increased.

  FIG. 10 is a perspective view of the outer body molded heat insulating material 17 as viewed from the inner peripheral surface side. FIG. 11 is a perspective view of the second protective component 60. FIG. 12 is a perspective view showing a state before the second protective component 60 is attached to the second opening 17 c of the outer body molded heat insulating material 17. As shown in FIG. 10, protective component receiving grooves 17 d and protrusions 17 e are formed at a plurality of locations around the second opening 17 c on the inner peripheral surface of the outer body portion molded heat insulating material 17.

  As shown in FIG. 11, the second protective component 60 has a protective surface 60a and a flange 60b provided on each of the four sides of the protective surface 60a. The protective surface 60a has a surface shape that is substantially the same shape as the second opening 17c. Since the protective surface 60a covers the vacuum heat insulating material 20 with the second opening 17c, the vacuum heat insulating material 20 in the second opening 17c can be protected. Like the structure of illustration, the protective surface 60a may be curving so that the outer peripheral surface of the vacuum heat insulating material 20 arrange | positioned cylindrically may be followed. In the illustrated configuration, two flanges 60b are provided for each side of the protective surface 60a. The flange 60b protrudes from each side of the protective surface 60a toward the outer peripheral side. The flange 60b is connected to the protective surface 60a through a small step. The flange 60b is formed with a hole 60c for fixing to the protrusion 17e of the outer body part molded heat insulating material 17.

  As shown in FIG. 12, during the manufacture of the hot water storage type hot water heater 100, before the outer body molded heat insulating material 17 is assembled to the hot water storage tank 1 from the outside of the vacuum heat insulating material 20, The second protective component 60 is attached to the second opening 17c from the inner peripheral surface side. The protective component receiving groove 17d has a shape corresponding to the position and size of the flange 60b. The protrusion 17e protrudes from the bottom of the protective component receiving groove 17d. When attaching the second protective component 60, the protrusion 17e is press-fitted into the hole 60c so that the flange 60b is in close contact with the protective component receiving groove 17d. By making the diameter of the protrusion 17e slightly larger than the inner diameter of the hole 60c, the hole 60c of the flange 60b is fixed to the protrusion 17e after press-fitting.

  The flange 60b, the hole 60c, and the step 17b correspond to a fixing portion that fixes the second protective component 60 to the outer body molded heat insulating material 17. In this Embodiment 1, since the said fixing | fixed part was equipped in the outer trunk | drum shaping | molding heat insulating material 17 and the 2nd protection component 60, without using fixing members, such as an adhesive tape, for example, the outer trunk | drum shaping | molding heat insulation 17 is used. The second protective component 60 can be fixed.

  In addition, in this invention, the shape which functions as a fixing | fixed part is provided in either the outer trunk | die molded heat insulating material 17 or the 2nd protective component 60, and the 2nd protective component 60 is fixed to the outer trunk molded heat insulating material 17. You may comprise as follows. Moreover, in this invention, you may fix the 2nd protection component 60 to the outer side trunk | molding heat insulation 17 by using fixing members, such as an adhesive tape, for example.

  In the first embodiment, since the second protective component 60 is fixed to the outer body molded heat insulating material 17 as described above, the second protective component 60 is removed from the outer surface side of the outer body molded heat insulating material 17. I can't. For this reason, even if it receives the influence of the vibration etc. by an earthquake, for example, it can prevent reliably that the 2nd protection component 60 falls out from the 2nd opening part 17c for a long period of time.

  In the first embodiment, the thickness of the second protective component 60 (the thickness of the protective surface 60a) is equal to the thickness of the outer trunk molded heat insulating material 17 (the outer trunk molded heat insulating portion adjacent to the second protective component 60). Smaller than the thickness of the material 17. In this way, by reducing the thickness of the second protective component 60, the depth of the recess formed by the outer surface of the protective surface 60 a of the second protective component 60 is increased with respect to the outer surface of the outer body molded heat insulating material 17. it can. Therefore, when a part of constituent devices such as pipes, pumps, valves, and heat exchangers are arranged in the recess, the installation space for the devices can be further increased.

  FIG. 13 is a perspective view showing a modified example of the outer body forming heat insulating material 17 and the second protective component 60. In the modified example shown in FIG. 13, the second protective component 60 is attached to the outer trunk molded heat insulating material 17 by insert molding of the second protective component 60 when the outer trunk molded heat insulating material 17 is molded. That is, by injecting the material in a state where the second protective component 60 is disposed inside the mold for molding the outer trunk molded heat insulating material 17, the outer trunk molded heat insulating material 17 and the second protective component 60 are integrated. Can be molded. By doing in this way, there exists an advantage that the process of assembling the 2nd protection component 60 to the outer trunk | drum molded heat insulating material 17 is reduced.

  FIG. 14 is a perspective view showing a state before the third protective component 70 is attached to the third opening 17 f of the outer body molded heat insulating material 17. FIG. 15 is a perspective view of the third protective component 70. FIG. 16 is a perspective view of the auxiliary component 80 used for fixing the third protective component 70 to the outer body portion molded heat insulating material 17 as viewed from the back surface side. As shown in FIG. 14, the auxiliary component 80 is a frame-shaped component that is attached to the periphery of the third opening 17 f from the outer surface side of the outer body molding heat insulating material 17. The auxiliary component 80 has an opening 80a that overlaps the third opening 17f. The auxiliary component 80 has a protrusion 80b on the back surface side. The outer body molding heat insulating material 17 has an auxiliary component receiving groove 17g around the third opening 17f, into which the protrusion 80b of the auxiliary component 80 can be inserted by press fitting. The auxiliary component receiving grooves 17g are provided on the four sides of the third opening 17f, respectively.

  As shown in FIG. 15, the third protective component 70 has a protective surface 70a and a flange 70b provided on each of the four sides of the protective surface 70a. The protective surface 70a has a surface shape substantially the same as the third opening 17f. Since the protective surface 70a covers the vacuum heat insulating material 20 with the third opening 17f, the vacuum heat insulating material 20 in the third opening 17f can be protected. The protective surface 70a may be curved along the outer peripheral surface of the vacuum heat insulating material 20 arranged in a cylindrical shape. The flange 70b protrudes from each side of the protective surface 70a toward the outer peripheral side. The collar 70b is connected to the protective surface 70a through a step. A slot 70c into which the protrusion 80b of the auxiliary component 80 is inserted is formed in the collar 70b.

  As shown in FIG. 16, the protrusion 80b on the back surface side of the auxiliary component 80 is provided around the opening 80a. The protrusions 80b are provided along the four sides of the opening 80a. The material of the auxiliary component 80 of the first embodiment is the same material as the foamable molded heat insulating material. Or you may comprise the auxiliary | assistant component 80 with a resin molding component or a sheet metal component.

  In FIG. 14, when attaching the third protective component 70 to the third opening 17 f of the outer body molded heat insulating material 17, first, the flange 70 b is placed around the auxiliary component receiving groove 17 g of the outer body molded heat insulating material 17. The third protective component 70 is fitted into the third opening 17f so as to be in close contact. By doing in this way, the long hole 70c of the collar 70b overlaps with the position of the auxiliary component receiving groove 17g. Subsequently, the auxiliary component 80 is fixed to the outer body portion molded heat insulating material 17 so that the protrusion 80b is press-fitted into the auxiliary component receiving groove 17g. The third protective component 70 is fixed to the outer body molding heat insulating material 17 by the flange 70b being sandwiched between the outer body molding heat insulating material 17 and the auxiliary component 80.

  The flange 70 b, the long hole 70 c and the auxiliary part receiving groove 17 g correspond to a fixing part for fixing the third protective part 70 to the outer body forming heat insulating material 17. In the first embodiment, since the fixing portion is provided in the outer body molding heat insulating material 17 and the third protective component 70, the outer body molding heat insulating material 17 is used without using a fixing member such as an adhesive tape. The third protective component 70 can be fixed.

  In the present invention, the third protective component 70 is fixed to the outer body molded heat insulating material 17 by providing the outer body molded heat insulating material 17 and the third protective component 70 with a shape that functions as a fixing portion. You may comprise as follows. Moreover, in this invention, you may fix the 3rd protection component 70 to the outer trunk | drum molded heat insulating material 17 by using fixing members, such as an adhesive tape, for example.

  In the first embodiment, the thickness of the third protective component 70 (thickness of the protective surface 70a) is equal to the thickness of the outer trunk molded heat insulating material 17 (the outer trunk molded thermal insulation of the portion adjacent to the third protective component 70). Smaller than the thickness of the material 17. In this way, by reducing the thickness of the third protective component 70, the depth of the recess formed by the outer surface of the protective surface 70 a of the third protective component 70 is increased with respect to the outer surface of the outer body molded heat insulating material 17. it can. Therefore, when a part of constituent devices such as pipes, pumps, valves, and heat exchangers are arranged in the recess, the installation space for the devices can be further increased.

  As mentioned above, although Embodiment 1 of this invention was demonstrated, the hot water storage type water heater of this invention is limited to the structure provided with all the 1st protection components 50, the 2nd protection components 60, and the 3rd protection components 70 which were mentioned above. What is necessary is just to provide at least one of the 1st protection component 50, the 2nd protection component 60, and the 3rd protection component 70 instead of a thing. Moreover, in this Embodiment 1, the shape of the location where a shaping | molding heat insulating material (outside trunk | drum molded heat insulating material 17) does not cover a vacuum heat insulating material is opening (1st opening part 17a, 2nd opening part 17c, 3rd opening part). 17f), the present invention is not limited to such a configuration, and the shape of the part may be, for example, a notch.

Embodiment 2. FIG.
Next, the second embodiment of the present invention will be described with reference to FIG. 17 and FIG. 18. The difference from the above-described first embodiment will be mainly described, and the same or corresponding parts are denoted by the same reference numerals. The description is omitted. FIG. 17 is a perspective view of the first protective component 90 provided in the hot water storage type hot water heater 100 of the second embodiment. FIG. 18 is a perspective view showing a state before the component device 95 is arranged at the position of the first protective component 90 fixed to the outer body part molded heat insulating material 17 in the second embodiment.

  A hot water storage type water heater 100 of the second embodiment has a first protective component 90 of FIG. 17 instead of the first protective component 50 of the first embodiment. The method of fixing the first protective component 90 to the first opening 17a of the outer body molded heat insulating material 17 may be any of the methods described in the first embodiment. As shown in FIG.17 and FIG.18, the 1st protection component 90 has the uneven | corrugated shape 90a on the outer surface side. The first protective component 90 is preferably formed of a material such as a resin material (plastic) into a thin plate shape. The uneven shape 90 a corresponds to the shape of the component device 95 disposed outside the first protective component 90. The component device 95 is, for example, a pipe, a pump, a valve, a heat exchanger, or the like.

  In the second embodiment, the first protection component 90 has a function of positioning the mounting position of the component device 95 at an appropriate position in addition to the function of protecting the vacuum heat insulating material 20 in the first opening 17a. That is, when the component device 95 is attached, the component device 95 can be easily positioned at an appropriate position by adjusting the attachment position of the component device 95 according to the uneven shape 90 a of the first protective component 90. Thereby, assembly work can be performed efficiently.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the structure mentioned above. For example, at least one of the first protection component 50, the second protection component 60, the third protection component 70, and the first protection component 90 may be made of a transparent material. Since at least one of the first protective component 50, the second protective component 60, the third protective component 70, and the first protective component 90 is made transparent, the vacuum heat insulating material 20 can be visually recognized. The presence or absence can be confirmed visually from the outside of the protective component. In that case, it is only necessary that at least a part of the protective component (particularly the protective surface) is transparent.

DESCRIPTION OF SYMBOLS 1 Hot water storage tank, 2 Water supply piping, 3 Water supply piping, 4 Heating means, 5 Hot water piping, 6 Bath hot water supply piping, 7 Hot water supply piping, 8 Tank leg, 9 Outer case bottom plate, 10 Outer case side plate, 11 Outer case top plate, 12 Tank unit legs, 13 Inner upper molded heat insulating material, 14 Lower molded heat insulating material, 15, 16 Inner body molded heat insulating material, 17, 18 Outer body molded heat insulating material, 17a First opening, 17b Step difference, 17c Second opening Part, 17d protective part receiving groove, 17e protrusion, 17f third opening, 17g auxiliary part receiving groove, 19 outer upper molded heat insulating material, 20 vacuum heat insulating material, 30 hot water storage tank unit, 50 first protective part, 50a protective surface, 50b collar, 60 second protective component, 60a protective surface, 60b collar, 60c hole, 70 third protective component, 70a protective surface, 70b collar, 70 Long hole, 80 an auxiliary component, 80a opening, 80b projections 90 first protection part, 90a irregularities, 95 construction equipment, 100 water storage type water heater, 200 bathtubs

Claims (8)

A hot water storage tank,
A vacuum insulation covering the hot water storage tank;
Molded heat insulating material covering the hot water storage tank from the outside of the vacuum heat insulating material,
The molded heat insulating material is attached to a location that does not cover the vacuum heat insulating material, and a protective component having a material different from the molded heat insulating material,
Hot water storage type water heater equipped with.   The hot water storage type hot water supply device according to claim 1, wherein an outer surface of the protective component has a concave portion with respect to an outer surface of the molded heat insulating material adjacent to the protective component.   The hot water storage type water heater according to claim 1 or 2, wherein at least a part of the protective component is transparent.   The hot water storage type water heater according to any one of claims 1 to 3, wherein the protective component has an uneven shape corresponding to a shape of a device arranged outside the protective component.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 4, wherein the protective component is fixed to the molded heat insulating material with a tape.   The hot-water storage type hot water supply apparatus as described in any one of Claims 1-4 provided with the fixing | fixed part which fixes the said protection component to the said shaping | molding insulation material in one or both of the said shaping | molding insulation material and the said protection component.   The hot water storage type hot water supply apparatus according to any one of claims 1 to 6, wherein the protective component is fixed to the molded heat insulating material so that the protective component cannot be removed from an outer surface side of the molded heat insulating material.   The hot water storage type hot water supply device according to any one of claims 1 to 7, wherein a thickness of the protective component is smaller than a thickness of the molded heat insulating material.

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