JP5874559B2 - Seismic structure of hot water storage water heater - Google Patents

Description

  The present invention relates to an earthquake resistant structure of a hot water storage type hot water heater.

  Hot water storage water heaters that boil high-temperature hot water by a heating means such as a heat pump and store it in a hot water storage tank and supply hot water from the hot water storage tank to the outside as needed are widely used. A hot water storage tank unit of a hot water storage type water heater is composed of a hot water storage tank, a heat insulating material covering the hot water storage tank to ensure heat insulation, piping for inflow and outflow of hot water, and functional parts such as a pump and a valve. The structure includes a control board for controlling the water heater, an exterior case for storing and protecting these components, and a leg for fixing the outer case to a base or a floor surface. The hot water storage tank unit is heavy when hot water is stored in the hot water storage tank, but is required to have sufficient earthquake resistance so that the hot water storage tank unit does not fall over in the event of a large earthquake.

  In Patent Document 1, the upper end portion of the outer case of the hot water storage tank unit is fixed to a structure using a connecting member, and the reinforcing structure for reinforcing the mechanical strength of the upper end portion is provided inside the upper end portion of the outer case. There is disclosed a structure in which a body is disposed, and the reinforcing structure is configured to connect the upper end portion of the outer case to the base portion of the hot water supply pipe extending from the hot water storage tank.

JP-A-9-105556

  In the configuration disclosed in Patent Document 1, since the upper part of the hot water storage tank is connected to the upper part of the outer case through the reinforcement structure, the heat of the hot water in the hot water storage tank is Heat is transferred to the connecting member and radiated to the outside air. For this reason, the heat retention performance of the hot water storage tank decreases.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a seismic structure for a hot water storage hot water heater capable of improving the seismic performance without impairing the heat insulation performance of the hot water storage tank. And

The seismic structure of the hot water storage type hot water heater according to the present invention includes a case upper surface plate that forms the upper surface of the outer case of the hot water storage tank unit that houses the hot water storage tank, and a plurality of surfaces that are disposed on the back surface of the case upper surface plate and do not contact the hot water storage tank . An upper steadying member that connects the reinforcing member, the case upper surface plate, and an external structure; one end of the upper steadying member can be fixed to the case upper surface plate and the reinforcing member; the other end of the member, Ri fixable der in structure, the outer casing has a casing front plate forming a front, and a case side plate forming a side, and a case rear plate forming a rear case The front plate can be opened and closed at the time of inspection, and the reinforcing member is not disposed in the vicinity of the side of the case top plate located in parallel with the upper side of the case front plate, but is located in parallel with the upper side of the case back plate. On the side of the case top plate And near, Ru der those disposed in the vicinity of the sides of the case top plate located in parallel to the upper side of the case side plates.
Further, the seismic resistant structure of the hot water storage type hot water heater according to the present invention is arranged on the case upper surface plate forming the upper surface of the outer case of the hot water storage tank unit containing the hot water storage tank and the back surface of the case upper surface plate, and does not contact the hot water storage tank. A plurality of reinforcing members, a case top plate, and an upper steadying member that connects an external structure, and one end of the top steadying member can be fixed to the case top plate and the reinforcing member, The other end of the steady rest member can be fixed to the structure, and the outer case has a case front plate that forms the front, a case side plate that forms the side, and a case back plate that forms the back, The reinforcing member has a rib protruding downward, and the rib is disposed in the vicinity of one or both of the case side plate and the case back plate.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to improve seismic performance, without impairing the heat retention performance of a hot water storage tank.

It is a side view of the hot water storage tank unit provided with the earthquake-proof structure of the hot water storage type hot water heater of Embodiment 1 of the present invention. It is sectional drawing which expands and shows the vicinity of the top steady rest metal fitting and reinforcement metal fitting in Embodiment 1 of this invention. It is the perspective view which looked at the back surface side of the case upper surface board in Embodiment 1 of this invention. It is the perspective view which looked at the surface side of the case upper surface board in Embodiment 1 of this invention. It is the perspective view which looked at the back surface side of the case upper surface board in the modification of Embodiment 1 of this invention. It is the perspective view which looked at the hot water storage tank unit provided with the earthquake-proof structure of the hot water storage type water heater of Embodiment 1 of this invention from the upper direction. It is a perspective view which shows the reinforcement metal fitting in the earthquake-resistant structure of the hot water storage type water heater of Embodiment 2 of this invention. It is sectional drawing which expands and shows the vicinity of the top steady rest metal fitting and reinforcement metal fitting in Embodiment 2 of this invention.

  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 side view of a hot water storage tank unit provided with an earthquake resistant structure of a hot water storage type hot water supply apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, the hot water storage tank unit 100 according to the present embodiment includes a substantially cylindrical hot water storage tank 10 that stores hot water and a substantially rectangular parallelepiped outer case 20 that stores the hot water storage tank 10. The hot water storage type hot water heater generates high temperature hot water by heating water with, for example, a heat pump type heat source device (not shown) or a heater (not shown) arranged in the hot water storage tank 10, and the hot water is generated. It is stored in the hot water storage tank 10.

  The outer case 20 includes a case upper surface plate 21 that forms the upper surface of the outer case 20, a case bottom plate 22 that forms the bottom surface, a case front plate 23 that forms the front surface, a case rear plate 24 that forms the back surface, And side surface plates 25 and 26 that respectively form the side surfaces. FIG. 1 is a perspective view of the case side plate 25 on the near side in the drawing. In addition to the hot water storage tank 10, the outer case 20 includes a heat insulating material arranged to cover the hot water storage tank 10 in order to keep the hot water in the hot water storage tank 10, hot water piping, pumps, valves, heat exchangers, etc. Various devices such as the functional parts and the control board are further housed, but the illustration is omitted.

  Tank lower legs 31 are fixed to a plurality of locations near the lower part of the outer periphery of the hot water storage tank 10 by welding or the like. An internal leg 32 is fastened to the tank lower leg 31 with a bolt or the like. The lower end of the internal leg 32 is fixed to the upper end of the installation leg 33 across the case bottom plate 22. The lower end of the installation leg 33 is fixed to a base or a floor surface 50 or the like (hereinafter, represented by the floor surface 50) with an anchor bolt or the like. The hot water storage tank unit 100 is supported and fixed on the floor 50 by the leg structure 30 including the tank lower leg 31, the inner leg 32 and the installation leg 33.

  Further, the upper part of the hot water storage tank unit 100 is connected to a structure adjacent to the hot water storage tank unit 100 or a structure such as an indoor wall 60 (hereinafter, represented by the wall 60) via an upper anti-rest fitting 27 (upper anti-rest member). Connected). One end of the upper steady rest 27 is fixed to the front surface side of the case top plate 21 and is also fixed to a reinforcing bracket 28 (reinforcing member) installed on the back surface of the case top plate 21. The other end of the upper steady rest 27 is fixed to the wall 60. By providing the upper steady rest 27, it is possible to reliably prevent the hot water storage tank unit 100 from being tilted or toppled by a shake when a strong shake such as an earthquake occurs.

  FIG. 2 is an enlarged sectional view showing the vicinity of the upper steady rest metal fitting 27 and the reinforcing metal fitting 28 in the first embodiment of the present invention. As shown in FIG. 2, the reinforcing metal fitting 28 has a plate shape and is disposed on the back surface of the case upper surface plate 21. The upper steady rest 27 has a plate shape. One end portion of the upper steady rest metal fitting 27 is disposed so as to overlap the reinforcing metal fitting 28 with the case upper surface plate 21 interposed therebetween. In the present embodiment, one end of the upper steady rest 27, the case upper surface plate 21, and the reinforcing bracket 28 are integrally fixed by a screw 40 as a fixing means. That is, by screwing the screw 40 inserted through the hole formed in the upper steady rest metal 27 and the case upper surface plate 21 into the screw hole formed in the reinforcing metal fitting 28 and tightening the screw 40, the upper steady rest metal 27 One end of the case, the case upper surface plate 21 and the reinforcing metal fitting 28 are fastened. The other end of the upper steady rest 27 is bent at a right angle and is vertical. The other end of the upper steady rest 27 is fixed to the wall 60 by fixing means such as screws (not shown).

  In the present embodiment, by providing the reinforcing metal fitting 28 as described above, it is possible to reliably prevent the connection between the upper anti-rest metal fitting 27 and the hot water storage tank unit 100 even when strong shaking occurs. It is possible to reliably prevent the hot water storage tank unit 100 from tilting or falling over. The reinforcing metal fitting 28 is in close contact with the back surface of the case upper surface plate 21 and is not in contact with the hot water storage tank 10. For this reason, it is possible to prevent the heat of the hot water stored in the hot water storage tank 10 from passing through the reinforcing fitting 28 to the case upper surface plate 21 and dissipating heat from the case upper surface plate 21 to the outside air. Therefore, it is possible to prevent the heat retention performance of the hot water storage tank 10 from being lowered.

  FIG. 3 is a perspective view of the back surface side of the case top plate 21 according to Embodiment 1 of the present invention. FIG. 4 is a perspective view of the case upper surface plate 21 according to Embodiment 1 of the present invention as viewed from the front surface side. As shown in FIG. 3, in this embodiment, six reinforcing metal fittings 28 are arranged on the back surface of the case upper surface plate 21. As shown in FIG. 4, it is possible to individually fix the upper steady rest 27 to each of the reinforcing fittings 28. For this reason, in this embodiment, since the hot water storage tank unit 100 and the wall 60 can be connected using the plurality of upper steady rests 27, the seismic performance of the hot water storage tank unit 100 can be further improved. .

  Moreover, in this embodiment, all the six reinforcement metal fittings 28 are comprised with the same components. For this reason, the increase in the kind of components can be suppressed and cost reduction can be aimed at.

  In the outer case 20 in the present embodiment, the case front plate 23 can be opened and closed. When the hot water tank unit 100 is inspected, the built-in equipment can be inspected, repaired, replaced, etc. by opening the case front plate 23. As shown in FIG. 3 and FIG. 4, among the four sides of the case upper surface plate 21, a reinforcing metal fitting 28 is arranged in the vicinity of the side 21 a of the case upper surface plate 21 positioned in parallel with the upper side of the case front plate 23. In the vicinity of the side 21 b of the case upper surface plate 21 positioned in parallel with the upper side of the case back plate 24, two reinforcing metal fittings 28 are disposed, and the case upper surface plate positioned in parallel with the upper side of the case side surface plate 25. Two reinforcing metal fittings 28 are arranged in the vicinity of the side 21 c of the 21, and two reinforcing metal fittings 28 are arranged in the vicinity of the side 21 d of the case upper surface plate 21 positioned in parallel with the upper side of the case side plate 26. ing. Since the hot water storage tank unit 100 is not usually installed with the case front plate 23 that may be opened and closed at the time of inspection or the like facing the wall 60, the case upper surface plate 21 positioned in parallel with the upper side of the case front plate 23. Usually, the upper steady rest 27 is not fixed near the side 21a. For this reason, as in the present embodiment, it is reasonable to arrange the reinforcing metal fittings 28 so as to avoid the vicinity of the side 21a of the case upper surface plate 21 located in parallel with the upper side of the case front plate 23, which is convenient. The number of the reinforcing metal fittings 28 can be suppressed without damaging.

  In the example shown in FIG. 4, the two upper steady rests 27 are fixed to the positions of the two reinforcing brackets 28 arranged in the vicinity of the side 21 b of the case upper surface plate 21. Although not shown, it is possible to fix the two upper steady rests 27 at the positions of the two reinforcing brackets 28 arranged in the vicinity of the side 21c of the case upper surface plate 21, respectively. It is also possible to fix the two upper steady rests 27 to the positions of the two reinforcing fittings 28 arranged in the vicinity of the side 21d.

  In the present embodiment, some of the plurality of reinforcing metal fittings 28 are positioned in parallel with the side 21b of the case upper surface plate 21 and the upper side of the case side plate 25, which are positioned in parallel with the upper side of the case back plate 24. Near the corner of the case upper surface plate 21 with the side 21c and on the case positioned in parallel with the upper side of the case upper surface plate 21 and the upper side of the case side plate 26, which is positioned in parallel with the upper side of the case back plate 24. The face plate 21 is disposed in the vicinity of the corner with the side 21d. Since these corners are located in the vicinity of the vertex as a rectangular parallelepiped in the outer case 20, the rigidity is high. For this reason, by arranging the reinforcing metal fittings 28 at these corners and connecting the upper steadying metal fittings 27, the upper steadying metal fittings 27 can be more firmly connected to the hot water storage tank unit 100, and the earthquake resistance can be further improved. Can be improved.

  FIG. 5 is a perspective view of the back surface side of the case top plate 21 in the modification of the first embodiment of the present invention. In the modification shown in FIG. 5, instead of the two reinforcing metal fittings 28 arranged in the vicinity of the corners of the side 21b and the side 21c of the case upper surface plate 21 in the example shown in FIG. The reinforcing metal fittings 28A formed in a letter shape are arranged, and instead of the two reinforcing metal fittings 28 arranged in the vicinity of the corners of the side 21b and the side 21d of the case upper surface plate 21, these are integrated and L Reinforcing metal fittings 28A formed in a letter shape are arranged. According to the configuration of such a modification, the number of parts can be reduced, and the cost can be reduced.

  FIG. 6 is a perspective view of hot water storage tank unit 100 provided with the earthquake-resistant structure of the hot water storage type water heater according to Embodiment 1 of the present invention as viewed from above. In the example shown in FIG. 6, there are walls 60 on the back surface side of the hot water storage tank unit 100 and on one side surface. Then, one end of each of the two upper steady rests 27 is fixed to the position of the two reinforcing fittings 28 arranged in the vicinity of the side 21b of the case upper surface plate 21, and the other ends of these upper steady rests 27 are connected to each other. The hot water storage tank unit 100 is fixed to the wall 60 on the back side by fixing means (not shown) such as bolts. In addition, one end of the upper anti-rest metal fitting 27 is fixed to one position of two reinforcing metal fittings 28 arranged in the vicinity of the side 21d of the case upper surface plate 21, and the other end of the upper anti-rest metal fitting 27 is The hot water storage tank unit 100 is fixed to the wall 60 on the side surface side by fixing means (not shown) such as bolts.

  Thus, in the present embodiment, the plurality of upper steady rests 27 can be fixed to the same wall 60, and the plurality of upper steady rests 27 are located in different directions with respect to the hot water storage tank unit 100. It can also be fixed to each wall 60. For this reason, according to the situation of the installation place of the hot water storage tank unit 100, the several upper steady rest metal fitting 27 can be arrange | positioned in an appropriate location so that the more excellent earthquake resistance may be acquired.

Embodiment 2. FIG.
Next, the second embodiment of the present invention will be described with reference to FIG. 7 and FIG. 8. The description will focus on the differences from the first embodiment described above, and the same or corresponding parts will be denoted by the same reference numerals. The description is omitted. FIG. 7 is a perspective view showing a reinforcing metal fitting 28B in the earthquake resistant structure of the hot water storage type water heater according to Embodiment 2 of the present invention. FIG. 8 is an enlarged sectional view showing the vicinity of the upper steady rest metal fitting 27 and the reinforcing metal fitting 28B in the second embodiment of the present invention.

  As shown in FIG. 7, the reinforcing metal fitting 28B according to the second embodiment is provided with a rib 29 protruding downward. As shown in FIG. 8, the rib 29 of the reinforcing metal fitting 28 </ b> B is positioned so as to overlap the inner surface of the case back plate 24. A rib 21 e that protrudes downward is provided at the peripheral edge of the case upper surface plate 21. The rib 21 e of the case upper surface plate 21 overlaps the outer side of the case back surface plate 24. In this way, the rib 29 of the reinforcing metal fitting 28B and the rib 21e of the case upper surface plate 21 are positioned so as to overlap with the case back plate 24 interposed therebetween. At the portion where the rib 29, the case back plate 24 and the rib 21e overlap, the screw 40 is inserted into the hole formed in the case back plate 24 and the rib 21e, and the screw 40 is screwed into the screw hole formed in the rib 29. The rib 29, the case back plate 24, and the rib 21e are fastened by tightening the screws 40.

  As described above, in the second embodiment, the rib 29 is provided on the reinforcing metal fitting 28B, whereby the rigidity of the reinforcing metal fitting 28B is improved and the upper steady rest metal fitting 27 and the hot water storage tank unit 100 are more firmly connected. Can do. Moreover, since the rib 29 is arrange | positioned in the vicinity of the case backplate 24, the rib 29 does not narrow the internal space of the outer case 20, and can prevent interference with the apparatus accommodated. In the present embodiment, the rib 29 is fastened together with a fixing means (screw 40) for fixing the case top plate 21 and the case back plate 24, so that the number of parts of the fixing means for fixing the reinforcing bracket 28B can be reduced. Can be reduced. Further, since the reinforcing metal fitting 28B is also fixed to the case back plate 24 via the rib 29, the upper steady rest metal fitting 27 and the hot water storage tank unit 100 can be more firmly connected. 8 exemplifies the case where the rib 29 is disposed in the vicinity of the case back plate 24. Similarly, the rib 29 is disposed in the vicinity of the case side plate 25 or 26, and the case top plate 21 and the case are disposed. The side plate 25 or 26 and the rib 29 may be fixed together by a fixing means such as a screw 40.

10 hot water storage tanks, 20 outer case, 21 case top plate,
21a, 21b, 21c, 21d side, 21e rib, 22 case bottom plate,
23 Case front plate, 24 Case back plate, 25, 26 Case side plate,
27 Upper steady rest, 28, 28A, 28B Reinforcing bracket, 29 Rib,
30-leg structure, 31 tank lower leg, 32 internal leg, 33 installation leg, 40 screws,
50 floors, 60 walls, 100 hot water tank unit

Claims (6)

A case upper surface plate that forms the upper surface of the outer case of the hot water storage tank unit containing the hot water storage tank;
A plurality of reinforcing members disposed on the back surface of the case top plate and not in contact with the hot water storage tank ;
An upper steadying member for connecting the case top plate and an external structure;
With
One end of the upper bracing member is securable to said reinforcing member and the case upper plate, the other end of the upper bracing member, Ri fixable der to said structure,
The outer case has a case front plate that forms the front, a case side plate that forms the side, and a case back plate that forms the back, and the case front plate can be opened and closed during inspection,
The reinforcing member is not arranged in the vicinity of the side of the case upper surface plate positioned in parallel with the upper side of the case front plate, and is provided on the side of the case upper surface plate positioned in parallel with the upper side of the case back plate. seismic neighborhood structure and the case upper surface plate of the side water storage type water heater that is disposed in the vicinity of that position in parallel to the upper side of the case side plates. A case upper surface plate that forms the upper surface of the outer case of the hot water storage tank unit containing the hot water storage tank;
A plurality of reinforcing members disposed on the back surface of the case top plate and not in contact with the hot water storage tank ;
An upper steadying member for connecting the case top plate and an external structure;
With
One end of the upper bracing member is securable to said reinforcing member and the case upper plate, the other end of the upper bracing member, Ri fixable der to said structure,
The outer case has a case front plate forming a front surface, a case side plate forming a side surface, and a case back plate forming a back surface,
The reinforcing member has a rib protruding downward,
Seismic structure of hot-water storage type water heater that has the ribs are disposed in the vicinity of one or both of the case rear plate and the casing side plates. The hot water storage type water heater according to claim 1 or 2 , wherein a plurality of the upper steadying members are provided, and the plurality of upper steadying members can be individually fixed to each of the plurality of reinforcing members. Seismic structure. 4. The structure according to claim 1 , further comprising a plurality of the upper steady-state members, wherein the plurality of top steady-state members can be respectively fixed to the structures located in different directions with respect to the hot water storage tank unit. The earthquake-resistant structure of the hot water storage water heater according to claim 1 . At least a part of the plurality of reinforcing members includes a side of the case upper surface plate located in parallel with the upper side of the case back plate and a side of the case upper surface plate located in parallel with the upper side of the case side plate. seismic structure of the hot-water storage type hot water supply apparatus according to claim 1, wherein arranged in the vicinity of the corner between. The earthquake-resistant structure of the hot water storage type hot water heater according to claim 2, wherein the ribs are fixed together by a fixing means for fixing one or both of the case side plate and the case back plate and the case top plate.

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