JPS592435Y2 - gas water heater - Google Patents

Description

[Detailed description of the invention] This invention is a gas instantaneous water heater that allows the main interior parts of the water heater, such as the heat exchanger, burner, and nozzle holder, to be easily attached and removed from the opening/closing cover side on the front of the exterior body, which is the operation part. The purpose is to provide

Conventionally, these interior parts have been fixed to the exterior body with screws or the like via supporting metal fittings at both the front and rear parts, but as shown in FIG.
In the case of a water heater with a longer exterior body depth than the exterior body 1, the interior parts arranged over the entire length of the exterior body 1 are
When attaching and detaching the tool for maintenance and inspection, it is difficult to attach and detach the fixing screw located at the back from the front opening side because the operating space for the tool is narrow.

In order to eliminate this drawback, this invention allows the main interior parts to be installed in the inner part without the need for tools.An example of this invention will be described below with reference to the drawings.

In FIGS. 1 and 3, 1 is an exterior body with an opening/closing cover 2 on the front surface, which is an operating section, and 3, 4.5 are interior parts disposed over almost the entire depth of the exterior body 1, that is, 3 is a heat exchanger. 4 is a burner fixing fitting to which a large number of burners 6 are fixed, and 5 is a nozzle holder to which a nozzle communicating with the burners 6 is attached.

Reference numeral 7 denotes an inner heat exchanger support fitting fixed to the inner part of the exterior body 1; U-shaped bent part 8
is supported by the exterior body 1 by being removably inserted into the hole 9 (or recess) of the support metal fitting 7, and the front heat exchanger support metal fitting 10 is fixed to the front part inside the exterior body 1 at the front part. (
It is fixed to the exterior body 1 by means of fixing means, that is, screws 11, which are screwed into the outer case 1 (FIG. 3).

The burner fixing fitting 4 has a pin-shaped locking protrusion 12 horizontally protruding from the back side thereof, which is inserted into the hole 14 (or recess) of the inner burner support fitting 13 fixed to the inner part of the exterior body 1. It is supported by the exterior body 1 by being fixed with fixing screws 16 to a front burner support fitting 15 that is removably inserted and fixed to the front part of the interior of the exterior body 1 .

As shown in FIG. 2, the nozzle holder 5 has a pin-shaped locking protrusion 17 that is integrally provided on the rear side thereof and can be inserted into and removed from the hole 18 (or recess) of the burner fixture 4 which also serves as a nozzle holder support means. By fitting into the burner fixing bracket 4 and fixing it with the fixing screw 19 on the front side, the burner fixing bracket 4
It is supported by the exterior body 1 via.

According to such a configuration, in the exterior odor part, the heat exchanger 3 and the burner fixing fittings 4 are connected to the supporting fittings 7 and 4, respectively.
13, and the nozzle holder 5 can be installed by inserting the locking protrusions 8, 12, and 17 into the holes 18 of the burner fixing fitting 4, and tools need only be used at the front. Even in a water heater with a long depth as shown in FIG. 4, the heat exchanger 3, burner fixture 4, nozzle holder 5, etc. can be easily attached and detached from the front cover 2 side of the exterior body 1.

As described above, this invention allows the main interior parts of the water heater such as the heat exchanger and burner placed inside the exterior body to be easily attached and removed from the opening/closing cover side on the front side of the exterior body, which is the operation part, for maintenance and inspection. be able to.

Therefore, it is particularly useful in installation conditions where both sides of the exterior body are surrounded by obstacles.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Fig. 1 being an exploded perspective view of the interior parts, Fig. 2 being an exploded perspective view showing the relationship between the nozzle holder and the burner support fittings, and Fig. 3 being a side view of the assembled state. FIG. 4 is an external perspective view. 1...Exterior body, 2...Opening/closing cover, 3
, 5...Interior parts, 4...Interior parts (
Support means), 7.13...Support means, 8.12
．． 17...Lock protrusion, 9,14.18...
...Hole (recess), 11°16.19...Fixing means.

Claims (1)

[Scope of utility model registration request] A hole or recess into which the U-shaped bent portion of the heat absorption pipe that protrudes horizontally from the back side of the heat exchanger, which is arranged in the rear direction from the front inside the exterior body that has a cover that can be opened and closed on the front, can be inserted and removed. A deep heat exchanger support fitting is provided deep inside the exterior body, and the burner fixing metal fitting has a large number of burners fixed therein, and is horizontally protruded from a deep side surface of the burner fixing metal fitting, which is arranged from the front toward the rear inside the exterior body. A deep burner support fitting having a hole or a recess into which a locking protrusion can be inserted and removed is provided in the deep part of the exterior body, and the deep burner support metal fitting is inserted into the deep heat exchanger support metal fitting and the deep burner support metal fitting. A gas water heater characterized in that the front parts of the heat exchanger and burner fixing fittings are respectively fixed with screws to the front heat exchanger supporting fitting and the front burner supporting fitting fixed to the front part inside the exterior body. .