JPS6038842Y2 - Water heater - Google Patents

Description

[Detailed description of the invention] This invention relates to water heaters used for hot water storage or hot water supply types, and in particular, the installation of a cover on the water heater to prevent rainwater from entering the heating device or part of the controller installed on the exterior. The purpose is to improve the

Conventionally, this type of water heater is large, so it is often installed outdoors.

Therefore, as a measure against rainwater, a seal is installed between the exterior and the cover.

For example, as shown in FIGS. 5 to 7, the flange portion 22 provided on the peripheral edge of the cover 21 is covered with a gasket 23, and the gasket 23 is also placed in the same position as the screw hole 25 of the flange portion 22 to be attached to the exterior 24. The screw hole 25 is provided in the cover 2.
1 is attached to the exterior 24 via a packing 23.

In the packing 23 formed in this way, it is necessary to drill a screw hole 25 in the packing 23 to match the screw hole 25 provided in the flange portion 22, which increases the number of manufacturing steps for the packing 23, leading to an increase in cost. This is not desirable because it becomes a factor.

In addition, since the flange portion 22 provided on the cover 21 is flat, its strength is weak, and the outer cover 22 is
When the cover 21 is tightened with screws, force is applied locally and the flange portion 22 is deformed, making it difficult to uniformly tighten the entire circumference of the cover 21 with the same torque.

Therefore, rainwater may enter a part of the heating device and controller attached to the exterior 24, causing insulation failure, which is dangerous.

The present invention is intended to improve these conventional problems, and one embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes an exterior housing, which has a tank 2 therein for storing a fluid to be heated, and a part of a heating device 3 and a controller 4 of the heating device 3 protruding from the front surface.

A cover 5 is attached to an external device via a gasket 6 and covers the heating device 3 and controller 4.

7 is a flange provided on the periphery of the cover 5, and the tip is 0.
The part 8 is inserted into the packing 6 and the cover 5 is closed.
A screw hole 9 is provided for attaching the device to an external device.

Reference numeral 10 denotes a lip provided on the packing 6, which is provided on the surface that comes into contact with the outer device, and serves to increase the effect of tight contact between the outer device and the flange portion 7 by tightening the screws 9.

Note that the groove into which the 0 part 8 of the flange portion 7 provided on the packing 6 is inserted is formed to be expandable and contractible when the packing 6 is extruded, and when installed, the groove is formed on the peripheral edge of the flange 7. 0 part 8 can be easily inserted.

The water heater of the present invention configured in this way has a cover 5
By providing the 0 part 8 on the flange part 7, the strength of the peripheral edge of the flange part 7 is strengthened, and there is no local deformation even when tightening with screws, and the entire peripheral edge of the flange part 7 can be tightened uniformly with the same torque. I can do it.

Furthermore, the seal 6 is provided with a lip 10 on the surface that comes into contact with the exterior, which increases the degree of close contact between the outer device and the cover 5, prevents rainwater from entering, and allows for safer installation of the cover.

Also, the groove of the packing 6 into which the part 0 8 is inserted is the groove of the packing 6.
When extruded, it is formed so that it can be expanded and contracted.
It requires fewer manufacturing steps than conventional packing, making it cheaper in terms of costs.

As described above, the cover installation of the water heater of the present invention is structurally simple, easy to process and install, and can be provided at low cost.Moreover, there is no need to worry about rainwater entering between the cover and the exterior. 〈Durability and safety are improved compared to before.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a water heater showing an embodiment of the present invention;
Figure 2 is a front view of the water heater with the cover removed;
The figure is a sectional view of the same side, Figure 4 is an enlarged plan sectional view of the main part where the cover is attached, Figure 5 is a sectional view showing the conventional example and shows how the cover is attached to the water heater, and Figure 6 is the sectional view of the main part. FIG. 4 is an enlarged sectional view of the conventional example, and FIG. 7 is a diagram showing the shape of the gasket attachment in the conventional example. 1...exterior, 2...tank, 3...
...Heating device, 4...Controller, 5.
...Cover 6-*aa@@Patsukin, 7...
...Flange part, 8---U part, 10...
··lip.

Claims (1)

[Scope of utility model registration request] A tank that stores a fluid to be heated, a heating device that heats the fluid to be heated, an exterior that stores the tank, a controller that is attached to a part of the exterior, and covers the heating device and controller that are provided on the exterior. In a water heater consisting of a cover, the cover is attached to the exterior through a packing, and the mounting configuration is such that the cover is attached to the exterior, a flange portion provided on the cover, and a U portion provided on the flange portion. 1. A water heater characterized in that the gasket to which the gasket is attached is interposed, and a lip is provided on the surface of the gasket that contacts the exterior of the gasket to tighten the gasket.