JP2013087955A - Water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water heater in which a tank and an exterior body can be easily united together.SOLUTION: The water heater having a hot-water supply pipe-side connection part above the tank is characterized in that while a tank fixture is mounted on the hot-water supply pipe-side connection part above the tank, the hot-water supply pipe-side connection part and a tank-side connection part are connected to each other, and an upper part of the tank fixture and a top panel are fixed. Consequently, the tank and the exterior body can be easily united together.

Description

  The present invention relates to a water heater, and more particularly to a tank-type water heater.

  An example of a conventional tank-type water heater is shown in FIG. A hot water supply pipe 6 for supplying water to the hot water storage tank 1 at the lower part of the hot water storage tank 1, a hot water supply pipe connection part 3 for connecting the hot water supply pipe to the upper surface of the tank, and a high temperature heat medium in the hot water storage tank 1 to the hot water supply pipe connection part 3 A hot water supply pipe 4 for supplying (generally hot water) to the outside, a leg portion 7 for supporting the hot water storage tank 1, and a leg portion 8 for supporting the water heater are provided. The water heater is housed in the exterior body 9, and a heat insulating material 10 is filled between the exterior body 9 and the hot water storage tank 1. In addition, the leg 8 of the water heater is fixed to the floor surface by anchor bolts 11 in order to prevent the water heater from moving or overturning.

  However, when only the leg portion 8 supporting the water heater is fixed, the upper portion of the water heater is shaken, stress is concentrated on the leg portion 8 supporting the water heater, and the leg portion 8 is deformed or broken. There is a fear.

  In order to solve the above problem, a method of fixing the upper part of the water heater to the top plate has been proposed (for example, Patent Document 1).

Japanese Patent Application No. 9-191141

  However, in the above method, there are many places fixed by welding or bolts, and the structure is complicated.

  Then, an object of this invention is to provide the water heater which can integrate a tank and an exterior body easily.

  In order to achieve the above object, the water heater of the present invention attaches a hot water supply pipe to the hot water supply pipe connection port in a state where a tank fixture is inserted into the hot water supply pipe connection port on the upper surface of the hot water storage tank. The lower surface of the top plate is in contact with and fixed to the upper surface of the fixture.

  According to the present invention, by fixing the upper part of the hot water storage tank and the top plate, it is possible to prevent only the upper part of the hot water storage tank from shaking in the event of a roll such as an earthquake, and the leg portion supporting the hot water storage tank can be prevented. Deformation or breakage can be prevented.

The cross-sectional front view which shows the water heater based on one Embodiment of this invention. The perspective exploded view of the upper part of the water heater concerning one embodiment of the present invention. The detail drawing of the tank fixture of the water heater which concerns on one Embodiment of this invention. Detailed drawing which shows the positioning method of the tank fixture of the water heater which concerns on one Embodiment of this invention. The front view which shows the conventional water heater.

The Example of the water heater based on this embodiment is shown.
FIG. 1 is a cross-sectional view of an essential part showing an example of a water heater according to this embodiment, FIG. 2 is an exploded perspective view, and FIG. 3 is a detailed view of a tank fixture.

  As shown in FIG. 3, the tank fixture 2 includes a bottom surface portion, a rising portion that rises upward from both ends of the bottom surface portion, and a protruding portion that protrudes laterally from the upper end of the rising portion. Specifically, the tank fixture 2 has a shape in which the metal plate is bent 90 degrees upward leaving the bottom portion, and the end of the portion rising upward by bending is bent 90 degrees. .

  In addition, an opening for passing a hot water supply pipe 4 and a hot water supply pipe side connection part 3 (details will be described later) provided at the end of the hot water supply pipe 4 is provided on the bottom surface of the tank fixture 2. The tank fixture 2 has a space for accommodating the hot water supply pipe 4. Specifically, this space is a region surrounded by the bottom surface portion and the rising portion.

  A burring portion 12 extending upward is provided on the upper surface (specifically, the protruding portion) of the tank fixture 2. A screw portion is formed on the inner periphery of the burring portion 12. In addition, the tank fixture 2 is formed with a reinforcing portion 2E in which the front surface and the rear surface of the bottom surface portion are bent 90 degrees downward to improve the strength.

  As shown in FIG. 2, a hot water supply pipe side connection portion 3 is provided at the end of the hot water supply pipe 4. On the other hand, a tank side connection portion is provided on the upper surface of the tank (hot water storage tank) 1, and the tank side connection portion (not shown) has a male screw structure. The hot water supply pipe 4 is connected to the tank 1 by screwing the hot water supply pipe side connection part 3 into the tank side connection part. Prior to connecting the hot water supply pipe 4, the tank fixture 2 is attached to the hot water supply pipe side connection part 3. The hot water supply pipe 4 is connected to the tank 1 before the tank side connection part is screwed into the hot water supply pipe side connection part 3. Therefore, even when the hot water supply pipe 4 is connected to the tank 1, the tank fixture 2 can be displaced with respect to the tank 1 and the hot water supply pipe 4.

  As shown in FIG. 2, the top plate 5 is provided with an opening for escaping the screw when the tank fixture 2 is fixed with the screw. When the screw is fixed, the screw head comes into contact with the top plate 5 and the shaft portion of the screw reaches the tank fixture 2 through the opening (and an opening of a top plate reinforcing member 13 described later). It becomes a state. Moreover, the top plate 5 has a side surface portion whose end edge portion is bent 90 degrees downward, and the side surface portion is provided with an opening for fixing to the exterior body 9 with screws.

  As shown in FIG. 2, the top plate reinforcing member 13 is attached to the top plate 5. The top plate reinforcing member 13 has a width equivalent to that of the top plate 5 and is provided with a burring portion facing downward to fix the top plate 5 and screws. Further, the top plate reinforcing member 13 is provided with an opening through which the screw escapes when the tank fixture 2 and the top plate 5 are screwed.

  A receiving member 14 for receiving the tank fixture 2 is attached to the top plate reinforcing member 13. The receiving member 14 is a guide member having a guide function for guiding the tank fixture 2 attached to the tank 1 when the tank 1 is housed in a casing formed by integrating the exterior body 9 and the top plate 5. is there. Thereby, the tank fixture 2 can be easily positioned with respect to the top plate 5. The receiving member 14 may have a function of receiving the movement of the tank 1 when the tank 1 moves due to shaking or the like.

  The receiving member 14 includes a fixed portion that is fixed to the top plate reinforcing member 13, a falling portion that falls from the fixed portion, and a protruding portion that extends laterally from the falling portion. Specifically, the receiving member 14 bends the metal plate 90 degrees downward and has a length (for example, 10 mm) larger than the thickness (for example, 1.2 mm) of the protruding portion of the tank fixture 2. In addition, it has a shape that is bent 90 degrees laterally.

  By the way, a pair of protrusions are provided facing each other so as to sandwich the tank fixture 2 from the side. The pair of protrusions are fixed in a state in which a width slightly larger than the width of the upper surface of the tank fixture 2 is secured. The tank fixture 2 of the tank 1 is inserted from the front-rear direction into a space sandwiched between the pair of protrusions. When the tank 1 is housed in a housing formed by integrating the exterior body 9 and the top plate 5, the pair of protrusions are arranged so that the tank fixture 2 attached to the tank 1 is smoothly inserted. It is attached along the insertion direction of the tank fixture 2 (preferably in parallel).

  In addition, the protrusion is provided with an opening for escaping the tip of the screw that fastens the top plate 5, the top plate reinforcing member 13, and the tank fixture 2. The receiving member 14 is welded to the top plate reinforcing member 13 so that the position of the opening of the receiving member 14, the position of the opening of the top plate 5, and the position of the opening of the top plate reinforcing member 13 coincide. .

  Using the receiving member 14 welded to the top plate reinforcing member 13 as a guide, the top plate 5 is inserted into the tank fixture 2. At that time, as shown in FIG. 4, in the tank fixture 2, the burring 12 on the upper surface of the tank fixture 2 is fitted in the opening of the top plate reinforcement member 13 that is at the same position as the top plate 5 and the top plate reinforcement member 13. Thus, the position is easily determined, and the top plate 5 and the upper portion of the tank 1 can be fixed by screw fixing.

  Further, the top plate 5 fixed to the tank fixture 2 is fixed to the exterior body 9 so that the lower portion of the tank fixture 2 is in contact with the upper surface of the tank 1 and is pressed from above.

  According to the said structure, the tank 1 and the exterior body 9 can be integrated easily. Therefore, only the tank 1 can be prevented from shaking separately from the exterior body 9 and the like.

  In addition, the connection of the tank side connection part of the tank 1 and the hot water supply pipe side connection part of the hot water supply pipe is possible by a method other than the above screwing method as long as the structure can obtain an equivalent effect. For example, a quick fastener or the like may be used.

  Moreover, the shape of the tank fixture 2 has the same effect and is possible if it is a structure integrated with the top plate.

DESCRIPTION OF SYMBOLS 1 Tank 2 Tank fixture 3 Hot-water supply pipe connection port 4 Hot-water supply piping 5 Top plate 6 Water supply piping 7 Leg part 8 which supports a tank 9 Leg part 9 which supports a water heater External body 10 Heat insulating material 11 Anchor bolt 12 Burling 13 Top-plate reinforcement Member 14 Receiving member

Claims (1)

  In a water heater having a hot water supply pipe side connection part at the upper part of the tank, with the tank fixture attached to the hot water supply pipe side connection part at the upper part of the tank, the hot water supply pipe side connection part and the tank side connection part are connected, A water heater, wherein an upper part of a tank fixture and a top plate are fixed.