JP2016142435A - Storage water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage water heater that can facilitate assembling and can prevent a decline in heat insulating performance of a hot water storage tank without increasing the number of components and the number of assembling manhours.SOLUTION: A storage water heater includes: a hot water storage tank 1; a heat insulation material (lower formation heat insulation material 17) for covering the hot water storage tank 1; a casing accommodating the hot water storage tank 1 and the heat insulation material; and a connection port component 10 for forming a connection port to which piping outside the casing is connected. The casing includes a connection port arrangement portion 11 having the connection port component 10 arranged therein. The heat insulation material includes projecting portions (first projecting portion 17a and second projecting portion 17b) projecting toward the connection port arrangement portion 11. The projecting portions have rigidity that enables the weight of the connection port component 10 and the connection port arrangement portion 11 to be supported.SELECTED DRAWING: Figure 1

Description

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

  Hot water heaters that store hot water heated by heating means such as heat pumps in hot water storage tanks and use hot water extracted from the hot water storage tanks to hot water sources such as bathtubs, showers, kitchen faucets, etc. are widely used. It has been. The hot water storage tank is housed in a housing made of a metal plate or the like. A plurality of pipes are connected to the casing from the outside. These pipes include, for example, water supply pipes for supplying water from water sources such as water supplies, hot water supply pipes for supplying hot water to showers and faucets, bath pipes connected to bath tubs, heat pump pipes connected to heat pumps, etc. is there. The housing is provided with a connection port for connecting these external pipes. The housing has a connection port arrangement part in which connection port components forming the connection port are arranged.

  In Patent Document 1 below, a pipe support member (3) corresponding to a connection port arrangement portion is attached to a tank support leg (6, 7) that supports a hot water storage tank (4, 5) via a leg stay (1). A fixing structure is disclosed.

JP 2014-85068 A

  In the structure of Patent Document 1, the heat retention performance of the hot water storage tank is achieved by the heat of the hot water storage tank reaching the pipe support member (connection port arrangement portion) through the tank support legs and the leg stays and radiating heat from the pipe support member to the outside air. May decrease. Further, a leg stay and a part for fixing the leg stay are newly required, and the number of parts increases. The number of assembly steps for assembling the leg stays will also increase.

  In the case of a hot water storage type water heater that does not have a structure as in Patent Document 1, the connection port arrangement portion is not sufficiently fixed when assembling the piping inside the housing in the assembly process at the time of manufacture. Therefore, due to the weight of the connection port part and the connection port arrangement part, the position of the connection port part is displaced from the normal position, so that the operation of connecting the internal pipe to the connection port part may not be easily performed. .

  The present invention has been made in order to solve the above-described problems, and is a hot water storage type that facilitates assembly without increasing the number of parts and the number of assembling steps, and can prevent a decrease in heat retention performance of the hot water storage tank. The purpose is to provide a water heater.

  The hot water storage type hot water heater according to the present invention includes a hot water storage tank, a heat insulating material that covers the hot water storage tank, a housing that stores the hot water storage tank and the heat insulating material, and a connection port that connects a pipe outside the housing. The housing has a connection port arrangement part in which the connection port part is arranged, the heat insulating material has a protrusion protruding toward the connection port arrangement part, and the protrusion is connected It has rigidity capable of supporting the weight of the mouth part and the connection port arrangement part.

  According to the hot water storage type hot water supply apparatus of the present invention, it is possible to facilitate assembly without increasing the number of parts and the number of assembling steps, and to prevent a decrease in heat retention performance of the hot water storage tank.

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 for demonstrating the outline | summary of the hot water storage tank with which the hot water storage type water heater shown in FIG. 1 is equipped, and a heat insulating material. It is a perspective view which shows the state in the middle of the assembly of the hot water storage tank unit of the hot water storage type water heater shown in FIG. It is the perspective view which expanded the A section in FIG. It is a perspective view which shows the lower shaping | molding heat insulating material with which the hot water storage type water heater shown in FIG. 1 is provided. FIG. 4 is a cross-sectional view showing a state where the hot water storage tank unit in the middle of assembly shown in FIG. 3 is laid down on the floor. It is the figure which expanded the B section in FIG.

  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 200 according to the first embodiment includes a hot water storage tank unit 100 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 heating means 4 is comprised with the heat pump unit which heats water using a refrigerating cycle, for example. The hot water storage tank unit 100 and the heating means 4 are connected via an outgoing pipe 3 and a return pipe 5. To the hot water storage tank unit 100, a water supply pipe 2, a first bath pipe 6, a second bath pipe 7, and a hot water supply pipe 8 are further connected.

  Water from a water source such as an external water supply is supplied to the hot water storage tank unit 100 through the water supply pipe 2. The water supplied from the water supply pipe 2 flows into the hot water storage tank 1 from the lower part of the hot water storage tank 1. 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 conveyed to the heating means 4 through the forward piping 3. The water conveyed to the heating means 4 is heated to become hot water. This hot water returns to the hot water storage tank unit 100 through the return pipe 5 and flows into the hot water storage tank 1 from the upper part of the hot water storage tank 1 and is stored. 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 100 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 whose temperature is adjusted by the mixing valve in the hot water storage tank unit 100 is supplied to the bath tub 30 through the first bath pipe 6 and the second bath pipe 7. The hot water whose temperature has been adjusted by the mixing valve in the hot water storage tank unit 100 is supplied to a hot water supply terminal (not shown) such as a shower, a kitchen or a washroom faucet through the hot water supply pipe 8. In addition, when the bathtub 30 is chased, the hot water in the bathtub 30 circulates in the hot water storage tank unit 100 through the first bath pipe 6 and the second bath pipe 7.

  The hot water storage tank unit 100 includes an approximately rectangular parallelepiped box-shaped outer case (housing). The hot water storage tank 1 is accommodated in the outer case in a state covered with a heat insulating material to be described later. Various devices such as an internal pipe 22, a pump, a valve, a heat exchanger, and a control board are further arranged inside the outer case. The outer case includes an outer case bottom plate 9 that forms a bottom surface, a connection port arrangement portion 11, a kick plate 12, an outer case side plate 13 that forms left and right side surfaces, and an outer case top plate 14 that forms a top surface. Prepare. The outer case further includes an outer case front plate that forms the front surface. FIG. 1 shows a state where the outer case front plate is removed. The outer case further includes an outer case back plate forming a back surface. In FIG. 1, the outer case back plate is in an invisible position. These components of the outer case are made of a metal plate or the like. These components of the outer case are fastened to each other via fastening parts such as screws. A plurality of external legs 15 are installed under the outer case bottom plate 9. The external leg 15 is fixed to an anchor bolt (not shown) embedded in an installation surface such as the ground, a pedestal, or a floor. The hot water storage tank unit 100 is fixed to the installation surface via the external leg 15.

  The hot water storage tank unit 100 has a plurality of connection port components 10. Each of the connection port parts 10 is a part that forms a connection port to which the water supply pipe 2, the forward pipe 3, the return pipe 5, the first bath pipe 6, the second bath pipe 7, and the hot water supply pipe 8 are detachably connected. is there. The plurality of connection port parts 10 are arranged in the connection port arrangement part 11 of the outer case. The piping (water supply piping 2, forward piping 3, return piping 5, first bath piping 6, second bath piping 7, and hot water piping 8) extending to the outside of the outer case of the hot water storage tank unit 100 corresponds to the corresponding connection port part 10. Are detachably connected.

  In the outer case of the hot water storage tank unit 100, one end of the internal pipe 22 is connected to each connection port component 10. The other end of the internal pipe 22 is connected to the hot water storage tank 1, a pump, a valve, a heat exchanger, or the like.

  The heating means in the present invention is not limited to a heat pump. For example, an electric heater, a solar fluid heater that is heated by solar heat, and a combustion that is heated by the combustion heat of fuel (for example, gas, kerosene, heavy oil, coal, etc.) A fluid heater may be used. Moreover, in this invention, a heating means may be arrange | positioned inside the same housing | casing as a hot water storage tank. Further, heating means such as an electric heater may be arranged in the hot water storage tank.

  FIG. 2 is an exploded perspective view for explaining an outline of the hot water storage tank 1 and the heat insulating material provided in the hot water storage type hot water heater 200 shown in FIG. As shown in FIG. 2, the hot water storage tank 1 has a substantially cylindrical shape. In the state where the hot water storage tank unit 100 is fixed to the installation surface, the axial direction of the hot water storage tank 1 coincides with the vertical direction. The hot water storage tank 1 includes a cylindrical body 1a, an end plate 1b joined to the upper portion of the body 1a, and an end plate 1c joined to the lower portion of the body 1a. The shape of the end plates 1b and 1c is substantially hemispherical or bowl-shaped.

  The hot water storage tank 1 is covered with an upper molded heat insulating material 16, a lower molded heat insulating material 17, a body molded heat insulating material 18, and a body molded heat insulating material 19. Each of the molded heat insulating materials 16, 17, 18, and 19 is desirably a foamable heat insulating material formed of, for example, foamed polystyrene or a foamable heat insulating material formed of a material having a heat insulating performance equal to or higher than that of expanded polystyrene. .

  The upper molded heat insulating material 16 covers the upper part of the hot water storage tank 1. It is desirable that the upper molded heat insulating material 16 is in close contact with the upper part of the hot water storage tank 1. The lower molded heat insulating material 17 covers the lower part of the hot water storage tank 1. The lower molded heat insulating material 17 is preferably in close contact with the lower portion of the hot water storage tank 1. The body forming heat insulating materials 18 and 19 cover the body (side surface) of the hot water storage tank 1. In this Embodiment 1, although the heat insulating material which covers the trunk | drum of the hot water storage tank 1 is divided | segmented into two of the trunk | drum molded heat insulating materials 18 and 19, you may divide | segment into three or more. It is desirable that the body forming heat insulating materials 18 and 19 are in close contact with the body of the hot water storage tank 1.

  The hot water storage tank 1 is supported on the outer case bottom plate 9 by a plurality of internal legs 20. The lower end of the inner leg 20 is fixed to the upper end of the outer leg 15 with the outer case bottom plate 9 interposed therebetween.

  The connection port arrangement | positioning part 11 is located in the lower part of the front side of an outer case. The connection port arrangement part 11 is at a position higher than the outer case bottom plate 9. The connection port arrangement part 11 has a plate surface parallel to the outer case bottom plate 9. A plurality (six in the first embodiment) of connection port components 10 are fixed to the connection port arrangement portion 11. The outer case bottom plate 9 and the connection port arrangement portion 11 are connected by a kick plate 12. The lower end portion of the kick plate 12 is fixed to the front end portion of the outer case bottom plate 9. The upper end portion of the kick plate 12 is connected to the connection port arrangement portion 11. The connection port arrangement portion 11 protrudes forward from the upper end portion of the kick plate 12. When viewed from the left-right direction, the connection port arrangement portion 11 and the kick plate 12 have an upside-down L-shape.

  An internal pipe 21 is disposed between the hot water storage tank 1, the connection port arrangement portion 11 and the kick plate 12. The internal pipe 21 is arranged so as to rise upward from the lower part of the hot water storage tank 1. In the first embodiment, three internal pipes 21 are passed between the connection port arrangement portion 11 and the kick plate 12.

  FIG. 3 is a perspective view showing a state in the middle of assembly of the hot water storage tank unit 100 of the hot water storage type water heater 200 shown in FIG. The state of FIG. 3 is a state in which the connection port arrangement portion 11, the kick plate 12, and the molded heat insulating materials 16, 17, 18, and 19 are attached. The state of FIG. 3 is a state before attaching the internal pipe 22 connected to the connection port part 10 inside the outer case of the hot water storage tank unit 100. FIG. 4 is an enlarged perspective view of portion A in FIG. FIG. 5 is a perspective view showing the lower molded heat insulating material 17 included in the hot water storage type hot water supply apparatus 200 shown in FIG. 1.

  As shown in FIG. 4, the connection port component 10 is installed so as to penetrate the connection port arrangement portion 11. The connection port component 10 has an upper opening and a lower opening. The piping outside the outer case (water supply piping 2, forward piping 3, return piping 5, first bath piping 6, second bath piping 7, and hot water supply piping 8) is connected to the connection port component 10 after the hot water storage tank unit 100 is installed. Connected to the lower opening.

  As shown in FIG. 5, the lower molded heat insulating material 17 has a first protrusion 17a and a second protrusion 17b. The 1st protrusion part 17a and the 2nd protrusion part 17b protrude toward the front. A space 17c is formed between the first protrusion 17a and the second protrusion 17b. One pipe holding portion 17d is formed on the first projecting portion 17a. Two pipe holding portions 17d are formed on the second projecting portion 17b. The pipe holding portion 17d has a groove shape into which the internal pipe 21 can be inserted.

  As shown in FIG. 4, the first projecting portion 17 a and the second projecting portion 17 b of the lower molded heat insulating material 17 project toward the connection port arranging portion 11. The tips of the first protrusion 17 a and the second protrusion 17 b are in contact with or close to the vicinity of the corner between the connection port arrangement portion 11 and the kick plate 12. By inserting the internal pipe 21 into the pipe holding part 17d of the first protruding part 17a and the second protruding part 17b, the position of the internal pipe 21 is held at an appropriate position. By having the space 17c between the first protrusion 17a and the second protrusion 17b, the member can be passed through the space 17c. In the first embodiment, the internal leg 20 is disposed in the space 17c. In FIG. 2, in order to show the configuration of the internal pipe 21, the illustration of the first protrusion 17 a and the second protrusion 17 b of the lower molded heat insulating material 17 is omitted.

  FIG. 6 is a cross-sectional view showing a state in which the hot water storage tank unit 100 in the middle of assembly shown in FIG. FIG. 7 is an enlarged view of a portion B in FIG. In the process of assembling the internal piping 22 of the hot water storage tank unit 100, as shown in FIG. 6, the hot water storage tank 1 is placed sideways (a state where the central axis of the hot water storage tank 1 is substantially horizontal). In this step, the hot water storage tank 1 is laid down with the connection port arrangement portion 11 facing upward. At the time of this step, as shown in FIG. 7, the first projecting portion 17 a and the second projecting portion 17 b of the lower formed heat insulating material 17 are in contact with the vicinity of the corner portion between the connection port arranging portion 11 and the kick plate 12. . The 1st protrusion part 17a and the 2nd protrusion part 17b have the rigidity which can support the weight of the connection port component 10 and the connection port arrangement | positioning part 11 at this time.

  In the process of assembling the internal pipe 22, the outer case side plate 13 is not yet attached, and therefore the connection port arrangement portion 11 and the kick plate 12 are not fastened to the outer case side plate 13. For this reason, assuming that the first protrusion 17a and the second protrusion 17b are not present, the connection port component 10 and the connection port arrangement portion 11 are inclined downward due to the weight of the connection port component 10 and the connection port arrangement portion 11, and are appropriate. It will fall below the correct position. In such a case, every time the operation of connecting the internal pipe 22 to the connection port part 10 is performed, assembly must be performed while correcting the positions of the connection port part 10 and the connection port arrangement portion 11 to appropriate positions. It will be necessary.

  On the other hand, in the first embodiment, during the process of assembling the internal pipe 22, the first projecting portion 17 a and the second projecting portion 17 b of the lower molded heat insulating material 17 are connected to the connection port component 10 and the connection port arranging portion 11. It is possible to reliably suppress the connection port component 10 and the connection port arrangement portion 11 from being lowered from the proper positions. Thereby, the assembly of the internal piping 22 can be facilitated. Moreover, it can prevent applying a load to the connection part of the internal piping 22 and the connection port component 10.

  By assembling the internal piping 22 with the hot water storage tank 1 laid sideways, the assembly work posture can be stabilized as compared to when assembling the internal piping 22 with the hot water storage tank 1 standing. Thus, it is possible to improve the assembling property and shorten the assembling time.

  According to this Embodiment 1, said effect is acquired by the 1st protrusion part 17a and the 2nd protrusion part 17b which were integrally provided in the lower shaping | molding heat insulating material 17. FIG. There is no need to add parts such as a stay for holding the position of the connection port arrangement portion 11. For this reason, said effect is acquired, without increasing a number of parts and an assembly man-hour. Moreover, since the 1st protrusion part 17a and the 2nd protrusion part 17b are the same materials as the lower shaping | molding heat insulating material 17, heat conductivity is low. For this reason, at the time of use of the hot water storage type water heater 200, it is possible to reliably suppress the heat of the hot water stored in the hot water storage tank 1 from being transmitted to the connection port arrangement portion 11. Therefore, it is possible to prevent a decrease in the heat retention performance of the hot water storage tank 1.

  In the first embodiment, the two projecting portions of the first projecting portion 17a and the second projecting portion 17b are provided, but these projecting portions may be formed as one. As shown in FIG. 4, in the first embodiment, the first protrusion 17 a is in contact with or close to a region including a portion near one end of the connection port arrangement portion 11, and the second protrusion 17 b is in the connection port arrangement portion 11. In contact with or in close proximity to the region including the portion near the other end. For this reason, when the hot water storage tank 1 is laid sideways, both ends of the connection port arrangement portion 11 can be reliably supported, and the positions of the connection port component 10 and the connection port arrangement portion 11 are lowered. It can be reliably suppressed. In order to obtain such an effect, the protruding portion in the present invention is configured to contact or approach at least a portion near one end of the connection port arrangement portion 11 and a portion near the other end of the connection port arrangement portion 11. It is desirable.

  In this Embodiment 1, the position of the internal piping 21 arrange | positioned between the hot water storage tank 1 and the connection port arrangement | positioning part 11 by providing the piping holding part 17d in the 1st protrusion part 17a and the 2nd protrusion part 17b. Can be held in an appropriate position. Thereby, the assembly property of the internal piping 21 connected to other than the connection port part 10 can also be improved. By providing the space 17c between the first protrusion 17a and the second protrusion 17b, an opening can be formed between the hot water storage tank 1 and the connection port arrangement part 11, and a member (this embodiment) In the first embodiment, the inner leg 20) can be passed.

  The first projecting portion 17a and the second projecting portion 17b of the lower molded heat insulating material 17 are broken (plastic) when the weight of the connection port component 10 and the connection port arrangement portion 11 is supported in the state shown in FIGS. Deformation, breakage, buckling, etc.) Such rigidity can be ensured by sufficiently increasing the thickness of the first protrusion 17a and the second protrusion 17b (the dimension indicated by T in FIG. 5). In the first embodiment, the total weight of all six connection port components 10 arranged in the connection port arrangement unit 11 and the weight of the connection port arrangement unit 11 is about 2.5 kg, for example.

  In this Embodiment 1, the protrusion part which supports the weight of the connection port part 10 and the connection port arrangement | positioning part 11 is formed in the lower shaping | molding heat insulating material 17 at an assembly process, However, In this invention, the trunk | drum of the hot water storage tank 1 is used. You may form the said protrusion part in the heat insulating material to cover.

DESCRIPTION OF SYMBOLS 1 Hot water storage tank, 1a body part, 1b, 1c End plate, 2 Water supply piping, 3 Outward piping, 4 Heating means, 5 Return piping, 6 1st bath piping, 7 2nd bath piping, 8 Hot water piping, 9 Outer case bottom plate, DESCRIPTION OF SYMBOLS 10 Connection port part, 11 Connection port arrangement | positioning part, 12 Kick board, 13 Outer case side plate, 14 Outer case top plate, 15 External leg, 16 Upper molded heat insulating material, 17 Lower molded heat insulating material, 17a 1st protrusion part, 17b 1st Two projecting parts, 17c space, 17d Pipe holding part, 18, 19 Body forming heat insulating material, 20 Internal leg, 21 Internal pipe, 22 Internal pipe, 30 Bathtub, 100 Hot water tank unit, 200 Hot water storage type water heater

Claims (4)

A hot water storage tank,
A heat insulating material covering the hot water storage tank;
A housing for storing the hot water storage tank and the heat insulating material;
A connection port part forming a connection port to which piping outside the housing is connected;
With
The housing has a connection port arrangement part in which the connection port parts are arranged,
The heat insulating material has a protruding portion that protrudes toward the connection port arrangement portion,
The protrusion is a hot water storage type hot water heater having rigidity capable of supporting the weight of the connection port part and the connection port arrangement portion.   The hot water storage type hot water supply device according to claim 1, wherein a holding portion that holds a pipe inside the housing is formed in the protruding portion.   The hot water storage type hot water supply apparatus according to claim 1 or 2, wherein the protruding portion is in contact with or close to at least a portion near one end and a portion near the other end of the connection port arrangement portion. The protrusion includes a first protrusion and a second protrusion,
The hot water storage type hot water supply device according to any one of claims 1 to 3, wherein a space is provided between the first protrusion and the second protrusion.

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