JPS6337649Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to an exterior cover used for a hot water storage tank of a solar water heater.

[Background technology]

Conventionally, a hot water storage tank is housed in an exterior cover made of a metal plate with a heat insulating material such as glass wool interposed therebetween. This exterior cover is made by overlapping the circumferential ends of two semi-cylindrical peripheral plates and joining them by riveting or the like.
An end plate is attached to the cylindrical portion thus formed. However, since both ends of both circumferential plates are simply overlapped and joined by rivets or the like, there are problems in that the waterproofness from the outside is poor and the heat insulating material is hidden. Another problem is that the strength of the exterior is weak. For this reason, the circumferential edges of both circumferential plates are rolled into each other by folding or the like. However, although this method ensures reliable water closing, there is a problem in that it is difficult to assemble.

[Purpose of invention]

The purpose of this invention is to provide an exterior cover that is sure to be waterproof, strong, and easy to assemble.

[Disclosure of invention]

The exterior cover of this invention has raised protrusions provided on both circumferential edges of the front circumferential plate and the rear circumferential plate, and these protruded protrusions are fitted into each other.

An embodiment of this invention is shown in FIGS. 1 to 6. In the figure, reference numeral 1 denotes a drum-shaped hot water storage tank that is erected on pillars 2, and has a jacket type heat exchanger 3 on the outer periphery of the lower part. A hot water supply pipe 4 is connected to the top surface of the hot water storage tank 1, and a water supply pipe 5 and a drain pipe 6 are connected to the bottom thereof. The hot water storage tank 1 is covered with an exterior cover 8 via a heat insulating material 7, and a circulation pump 9 is installed within the exterior cover 8 below the hot water storage tank 1. The heat insulating material 7 is made of glass wool or the like, and its surface is coated with nylon. The circulation pump 9 has an inlet connected to the jacket heat exchanger 3 via piping 10, and an outlet connected to an external solar heat collector (not shown) through piping. The outlet of the solar collector is piped to a jacket heat exchanger.
An inspection port 11 for the circulation pump 9 is provided at the lower front end of the exterior cover 8 . Also, on the front of the exterior cover 8, a box-shaped accessory cover 12 with an open rear surface is provided.
is provided over almost the entire height, and the expansion tank 13
is housed at the top, and the controller 14 is housed below. The expansion tank 13 is attached to the exterior cover 8. The expansion tank 13 is connected to the inlet of the jacket type heat exchanger 3 by a pipe 15, and is also connected to the external solar heat collector by a pipe 15.

The exterior cover 8 includes a semicylindrical front circumferential plate 16, a rear circumferential plate 17, an upper end plate 18, and a lower end plate 19. Both circumferential plates 16 and 17 have raised protrusions 20 and 21 with a wave-shaped cross section on both edges in the circumferential direction, and both protruded protrusions 20 of the front circumferential plate 16 are connected to the protruded protrusions 21 of the rear circumferential plate 17. Fit externally. The raised protrusions 20 and 21 are provided except for both axial ends of the circumferential plates 16 and 17, and in the removed portions, the outer circumferential flange 18a of the upper end plate 18 is fitted onto the circumferential plates 16 and 17, The outer peripheral flange 19a of the lower end face plate 19 is connected to the peripheral face plate 16,1.
Insert into 7. Both peripheral plates 16 and 17 have raised protrusions 2
0 and 21 are fixed by screws 22, and the upper and lower end plates 18 and 19 are fixed by screws 23 at the outer peripheral flanges 18a and 19a.
It is fixed at 17.

In this way, the raised protrusions 2 are placed on both peripheral plates 16 and 17.
0 and 21 are provided and overlapped, waterproofing is more reliable than in the conventional case where both ends of the circumferential plate are simply overlapped. Furthermore, unlike the conventional method in which both ends of both circumferential plates are wrapped around each other, it is sufficient to simply fit the protruding protrusions 20 and 21 together or to add screws thereto, so that assembly is easy. The raised protrusions 20 and 21 can be easily formed by press working. In addition, the peripheral plates 16 and 17 have raised protrusions 20,
21 is provided, so when assembling the peripheral plate 1
6 and 17 do not curl in the axial direction, and the flat plate shape can be easily maintained, further improving assemblability. Furthermore, since the raised protrusions 20 and 21 are provided, the strength of the exterior cover 8 after assembly is improved, and transportation and installation work are facilitated. In addition, the raised protrusions 20 and 21 are those of the front circumferential plate 16 and those of the rear circumferential plate 1.
Since it is fitted externally to the item No. 7, the overlapping state is not visible from the front and the appearance is good. In addition, when used for the exterior of the hot water storage tank 1, the exterior cover 8 is installed so that the front face faces the front of the building.
Since they overlap on the outside, rainwater blowing in from the front is difficult to penetrate into the overlapped area, making rainwater more reliable.

[Effect of idea]

The exterior cover of this invention has raised protrusions on the front and rear circumferential plates of the halves so that they can be overlapped, ensuring waterproofness, strong strength, and ease of assembly. Furthermore, since the raised protrusions on the front peripheral plate are fitted over the raised protrusions on the rear peripheral plate, it looks good from the front and has the effect of providing even more reliable protection from rain.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of one embodiment of this invention in a hot water storage tank stored state, Fig. 2 is an exploded perspective view of only the exterior cover, Fig. 3 is a cross-sectional view thereof, and Fig. 4 is the same part. FIG. 5 is a front view of the front circumferential plate in the unfolded state, and FIG. 6 is a cross-sectional view of the front circumferential plate in the unfolded state. 1... Hot water tank, 8... Exterior cover, 9... Circulation pump, 12... Accessories cover, 13... Expansion tank, 16... Front peripheral plate, 17... Rear peripheral plate,
18... Upper end face plate, 19... Lower end face plate, 20,2
1... protruding protrusion, 22, 23... screw.

Claims (1)

[Claims for Utility Model Registration] (1) A semi-cylindrical rear peripheral plate having raised protrusions with a wavy cross section that protrudes outward along both edges in the circumferential direction, and externally fitted onto both said raised protrusions. a semi-cylindrical front circumferential plate which has raised protrusions with a wave-like cross-sectional shape along both circumferential edges and forms a cylindrical part with the rear circumferential plate; and the end face of the cylindrical part is closed. An exterior cover with an end plate. (2) Utility model registration claim No. 1 in which the raised protrusions of the front and rear peripheral plates are provided except at both ends of the front and rear peripheral plates in the axial direction.
Exterior cover described in (1).