JPS6230678Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot water boiler that is equipped with a can body for storing hot water heat-exchanged by the combustion heat of a burner, an exterior case housing the can body, and the like.

In a conventional hot water boiler, when constructing a rectangular exterior, as shown in FIG. It was constructed by fixing a rectangular exterior top 3 to the top.
However, the rectangular exterior top 3 is constructed by bending the four sides downward to form the flange portion 3a, welding the four corners, and then painting the entire exterior top 3, which increases the cost. However, since it had a folded configuration, it did not have a very attractive design.

On the other hand, when using a can body having a hot water supply pipe, as shown in FIG. The hot water supply pipe 5 passes through a hole 6 provided in the side surface of the exterior case 2 and protrudes from the exterior case 2, and in order to improve waterproofing and appearance of this part, a ring-shaped pipe is provided. The waterproof packing 7 is fitted into the hot water supply pipe 5, and the outer peripheral part of the waterproof packing 7 is attached to the side surface of the exterior case 2. However, in this case, the waterproof packing 7
In order to prevent the outer periphery of the exterior case 2 from hitting the exterior top 3, it is necessary to extend the upper end of the exterior case 2 upwards. As a result, when the exterior top 3 is fixed to the exterior case 2, the exterior Since the overall height is extremely high, the cost is high.

The exterior top 3 is fixed with screws 8 so as to close the upper end opening of the exterior case 2, as shown in FIG. Because of this, there is no gap between the exterior case 2 and the exterior top 3, and therefore, in the unlikely event that
If the air intake port 2a provided in the exterior case 2 is blocked for some reason, there will be no place to take in air, and as a result, the burner (not shown) provided in the exterior case 2 will cause abnormal combustion. had.

In view of the above-mentioned conventional problems, the present invention has an excellent appearance, strong mounting strength, low cost, and even if the air intake port is blocked, the burner The object of the present invention is to provide a hot water boiler having an exterior structure that does not cause abnormal combustion.

The basic structure of the present invention to achieve the above object is a can that stores hot water that has been heat-exchanged by the combustion heat of the burner, and a water supply pipe that is installed in the upper part of the can so as to protrude laterally. , a rectangular outer case in which the can body is housed, a hole is provided for the hot water supply pipe to protrude to the outside, and an air intake port is provided on the surface having the hole, and the upper end opening of the outer case is closed. The hot water supply pipe is provided with a rectangular exterior top having a flange portion projecting downwardly formed on the entire circumference by press working and fixed to the exterior case by screwing the flange portion; A convex portion that forms a gap between the surface of the exterior case that corresponds to the hole, and a surface of the flange that is perpendicular to the surface that corresponds to the hot water supply pipe is provided with a screw on the exterior case. A fixing recess is provided for fixing, and a ring-shaped waterproof packing whose inner circumferential portion abuts the outer circumferential surface of the hot water supply pipe is provided on the exterior case located in the gap.

With the above configuration, the present invention has a shape in which the exterior top that closes the upper end opening of the exterior case has a downwardly protruding flange formed around the entire circumference by press working, so it is more effective than conventional exterior tops. Therefore, it is possible to obtain a product at a low cost and with an excellent appearance.
Moreover, a convex portion forming a gap with the side surface of the exterior case is provided on a surface of the flange portion of the exterior top that corresponds to the hot water supply pipe, and a convex portion is provided in a direction perpendicular to the surface of the flange portion that corresponds to the hot water supply pipe. Since the surface is provided with a fixing recess for fixing to the exterior case with screws, even if the air intake port is blocked, the protrusion and fixing recess are provided so that the exterior case can be fixed. Air can be taken in through the gap created between the side surface and the flange of the exterior top, and as a result, the burner will not cause abnormal combustion.Furthermore, there is a fixing recess for fixing to the exterior case with screws. By providing this on the flange portion of the exterior top, various practical effects can be achieved, such as increasing the mounting strength of the entire exterior.

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 4 shows the exterior structure of a hot water boiler according to an embodiment of the present invention. Reference numeral 11 denotes a rectangular exterior case, and this exterior case 11 is configured in a substantially U-shape. 12 is the outer case 11
This is a rectangular exterior top in which a flange portion 12a that protrudes downward so as to close the upper end opening is formed around the entire circumference by press working, and when this exterior top 12 is pressed, it has a corner shape of at least R5. This exterior top 12 is the fifth
As shown in the figure, when fixing to the exterior case 11 with the screws 13, the exterior case 11 is bent and its corners are at right angles, so the exterior case 11 and the exterior A gap 11a is created between the outer case 11 and the outer top 12, and as a result, the outer case 11 and the outer top 12 cannot be fixed with screws at the rear of the hot water boiler. Therefore, in one embodiment of the present invention, as shown in FIG.
A fixing recess 14 is provided, and the fixing recess 14
Use the to attach the rear of the exterior top 12 to the exterior case 1
1 can be fixed with screws. This prevents the rear surface of the exterior case 11 from becoming stiff, so that the mounting strength of the exterior case 11 can be ensured. Note that the fixing recess 14 is 1
It is also possible to provide more than one. 15 is a hole provided in the upper part of one side of the exterior case 11;
is provided to allow a hot water supply pipe, which will be described later, to pass through. Reference numeral 16 denotes an air intake port provided on the surface of the outer case 11 having the hole 15. In addition, the surface of the exterior top 12 provided with the two fixing recesses 14 in the direction perpendicular to the surface of the flange portion 12a, that is, the surface of the flange portion 12a corresponding to the hot water pipe and the surface opposite to that surface, are provided with an external surface. A convex portion 17 is provided that protrudes in the direction.

6a and 6b show the structure of the vicinity of the hot water supply pipes. Reference numeral 18 is a can housed in the outer case 11, and a hot water supply pipe 19 is provided in the upper part of the can body 18 so as to protrude laterally. The hot water supply pipe 19 is made to protrude outward from the hole 15 provided in the exterior case 11. Further, the convex portion 17 provided on the flange portion 12a of the exterior top 12 is provided at a position corresponding to the hole 15 of the exterior case 11, and forms a gap 20 between it and the exterior case 11. Reference numeral 21 denotes a ring-shaped packing located in the gap 20 and having an inner circumferential portion in contact with the outer circumferential surface of the hot water supply pipe 19; Installed and waterproofed. In addition, by making the outer circumference of this packing 21 face into the gap 20, the lower end 17a of the convex portion 17 of the exterior top 12 can be brought closer to the hot water pipe 19, so the height of the entire exterior can be lowered. As a result, it can be obtained at low cost.

Furthermore, as shown in FIG. 7, due to the presence of the fixing recess 14 provided in the rear flange portion 12a of the exterior top 12, most of the portion of the rear flange portion 12a of the exterior top 12 is not in contact with the exterior case 11. As a result, a gap 22 is formed between the rear flange portion 12a of the exterior top 12 and the exterior case 11, so as described above,
Even if the air intake port 16 provided on the surface of the exterior case 11 with the hole 15 is blocked for some reason, the outside air will pass through the gap 22 into the interior of the exterior case 11 as shown by the arrow. Since it is incorporated into a burner (not shown), it does not cause abnormal combustion in a burner (not shown).

As described above, in the hot water boiler of the present invention, the exterior top that closes the upper end opening of the exterior case is formed by press working, and the flange part that projects downward is formed around the entire circumference, so it is different from the conventional exterior top. Compared to the above, it is possible to obtain a product at a lower cost and an excellent appearance. Moreover, a convex portion forming a gap with the side surface of the exterior case is provided on a surface of the flange portion of the exterior top that corresponds to the hot water supply pipe, and a convex portion is provided in a direction perpendicular to the surface of the flange portion that corresponds to the hot water supply pipe. Since the surface is provided with a fixing recess for fixing to the exterior case with screws, even if the air intake port is blocked, the protrusion and fixing recess are provided so that the exterior case can be fixed. Air can be taken in through the gap created between the side surface and the flange of the exterior top, and as a result, the burner will not cause abnormal combustion.Furthermore, there is a fixing recess for fixing to the exterior case with screws. By providing this on the flange portion of the exterior top, various practical effects can be achieved, such as increasing the mounting strength of the entire exterior.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall structure of a conventional hot water boiler, FIG. 2 is a vertical sectional view showing the relationship between the outer case and the outer top in the hot water boiler, FIG. 3 is a horizontal sectional view showing the assembled state of the outer case and the outer top, FIG. 4 is an exploded perspective view showing the relationship between the outer case and the outer top of a hot water boiler in one embodiment of the present invention, FIG. 5 is a horizontal sectional view showing the assembled state of the outer case when the outer top is formed by pressing, and FIG. 6 shows the main structure of the hot water boiler, where a is a vertical sectional view and b is a horizontal sectional view.
FIG. 7 is a side view of the main part of the same. 11: outer case; 12: outer top;
2a: flange portion, 13: screw, 14: fixing recess, 15: hole, 16: air intake port, 1
7: protrusion, 18: boiler body, 19: hot water pipe, 2
0, 22...gap, 21...packing.

Claims (1)

[Scope of utility model registration request] A can body that stores hot water heat-exchanged by the combustion heat of the burner, a hot water pipe provided so as to protrude laterally from the upper part of the can body, and the can body is installed inside the can body, and the hot water pipe protrudes to the outside. A rectangular exterior case is provided with a hole for air intake, and an air intake port is provided on the surface with this hole, and a flange that protrudes downward to close the upper end opening of this exterior case is press-formed around the entire circumference. and a rectangular exterior top that is fixed to the exterior case by screwing the flange portion, and a surface of the flange portion of the exterior top that corresponds to the hot water pipe is connected to a surface of the exterior case that has the hole. Providing a convex part that forms a gap between the two,
Further, a fixing recess for fixing to the exterior case with a screw is provided on a surface of the flange portion perpendicular to a surface corresponding to the hot water supply pipe, and further, a fixing recess for fixing to the exterior case with a screw is provided in the gap, and the inner peripheral portion is provided with a fixing recess for fixing to the exterior case with a screw. A hot water boiler equipped with a ring-shaped waterproof packing that contacts the outer circumferential surface of the pipe.