JPH02187562A - Electric water heater and assembly method thereof - Google Patents

Abstract

PURPOSE:To enable completion of a mounting work at a site in a short time by a method wherein a heat insulating material attached to the outer periphery of each tank division body, an annular hold frame, and an outer plate are previously assembled to each tank division body at a factory. CONSTITUTION:In a manufacturing factory, an annular hold frame 16, heat insulating materials 5 and 6, and outer plates 7 and 8 are mounted to each of divided upper and lower tank division bodies 1 and 2. A heater 12 and a control panel 11 are mounted to the lower tank division body 2 and the outer plate 8 to previously manufacture a water warmer body in a 2-division state. In assembly of a body at a site, the tank division body 1 is first placed on the tank division body 2 in a manner that flanges 1a and 2a thereof are caused to coincide with each other, a packing 21 is nipped at a whole periphery between the flanges 1a and 2a, and the two flanges 1a and 2a are securely assembled together by means of a bolt 22. After the tank division bodies are securely fastened against each other, a beltform heat insulating material 9 is wound around a space formed between upper and lower annular hold frames 16 along a joint part therebetween, and an outer plate 15 is secured to an annular hold frame 16 in a manner to cover the an outer plate 15 therewith to complete assembly of a water heater device body.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electric water heater that has a relatively large tank body and heats wood within the tank using an electric heater, and a method for assembling the same.

<Conventional technology> In recent years, electric water heaters that boil water using economical late-night electricity have become widely used, and large water heaters with tank capacities of several thousand liters have also come into use. It has become.

Electric water heaters are usually installed indoors, but if you are installing a large water heater indoors in an existing building, the tank may be too large to see through the opening in the room when the water heater is fully assembled. I can't go inside.

<Problem to be solved by the invention> Therefore, it is necessary to assemble the electric water heater indoors where it will be installed, but everything from welding the tank, installing the control panel, and installing the insulation material and outer panel must be done on site. However, installation work required skilled technology and a lot of time. In addition, we assemble the tank indoors by welding,
If the tank is larger than the opening of the room, there is a problem in that even if it becomes necessary to move the tank to another house, it will not be possible to move it.

Means for Solving the Problems> The present invention has been made to solve the above problems, and can be assembled easily and in a short time at the installation site, and can also be moved to the installation location. The purpose is to provide a large-sized electric water heater and its assembly method.

To this end, in the electric water heater of the present invention, the tank body is divided into a plurality of parts, a flange is provided at the dividing edge of each tank divided body, and a heat insulating material is provided on the outer peripheral surface of each tank divided body except for the vicinity of the divided part. At the same time, an outer panel is attached to the outer periphery of the insulation material, and the ends of the insulation material and outer panel are supported by an annular holding frame fixed to the outer periphery of the tank division body. A plurality of guide jigs for assembly and connection are fixed to the ends, a heater control panel is attached to the outer plate, each of the tank division bodies is assembled, and the joints of the flanges are tightened with bolts with the gaskets in between, A heat insulating material is wrapped around the outer periphery of the tank near the joint, and an outer plate is fixed to the annular holding frame around the outer periphery of the heat insulating material.

With this configuration, the heat insulating material to be attached to the outer periphery, the annular holding frame, and the outer plate are assembled in advance at a factory, etc. to each tank segment, and each tank segment is assembled at the installation site. After that, by wrapping and fixing a band-shaped insulating material and outer panel around the outer periphery of the joint, the installation work can be completed in a short time. Furthermore, since the tank can be disassembled and reassembled, even a large water heater can be moved to another location in a house.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a front view including a half section of the electric water heater, and FIG. 2 shows a plan view thereof. The tank body of this water heater is
It is divided vertically into two on the horizontal cutting line 10 of the center shaft, and is composed of a tank division body 1 and a tank division body 2, and the lower outer periphery of the upper tank division body 1 and the upper outer periphery of the lower tank division body 2. Flanges 1a and 28, which can be joined to each other, are provided, for example, by welding, and each flange la, 2a has a large number of bolt holes for tightening and fixing. Further, a manhole 3 is provided in the upper part of the upper tank divided body 1, and the lower tank divided body 2 is fixed on a base 4.

Insulating materials 5 and 6 such as glass coils are wrapped around the outer periphery of the tank divided body 1.2, and an outer panel 7.8 such as a stainless steel decorative plate is attached to the outer periphery of the insulating material 5.6. Another band-shaped heat insulating material 9 and outer panel 15 are attached near the cutting line.

That is, as shown in FIGS. 3 and 4, slightly below the cutting line 10 on the outer periphery of the lower tank divided body 2, the annular holding frame 16 is attached to the outer periphery of the tank via a plurality of thin legs 17. The upper part of the heat insulating material 6 is held by this annular holding frame 16, and the upper end of the outer plate 8 is fixed onto the annular holding frame 16.

In this way, by fixing the annular holding frame 16 via the thin legs 17, the heat of the tank can be transferred to the outer panel.
It's on. Further, this annular holding frame 16 is similarly fixed slightly above the cutting line 10 on the outer periphery of the upper tank divided body 1, and the lower part of the heat insulating material 5 is held by this annular holding frame 16, and the outer plate 7 is The lower end is fixed onto the annular holding frame 16. Note that a heat insulating cover consisting of a heat insulating material and an outer plate is also placed over the flat part of the upper part of the tank.

Furthermore, a heater control panel 11 is attached to the outside of the lower tank divided body 2, and a heater 12 is inserted and fixed into the tank near the inside of this control panel 11. Also, a hot water supply port 14 is installed at the top of the tank body. , a water supply port 13 is provided at the bottom.

When manufacturing an electric water heater as described above, in the manufacturing factory, an annular holding frame 16, a heat insulating material 5.6, and an outer panel 7.8 are attached to each of the upper and lower divided tank parts 1.2, The heater 12, control panel 11, etc. are attached to the lower tank divided body 2 and outer plate 8, and a two-divided water heater body is manufactured in advance.

Then, each of these divided members is carried indoors where it will be installed, and the main body is assembled on site. That is, first, the tank divided body 1 is placed on the tank divided body 2 so that its flanges la and 2a are aligned, and the flanges 1a and 2 are
A gasket 21 is sandwiched around the entire circumference between the two flanges 1a and 2a, and both flanges 1a and 2a are tightened and fixed with bolts 22.

When placing the tank divided body 1 on the tank divided body 2, as shown in FIG. If weld the upper tank segment 1 in a protruding state and then lower the upper tank segment 1 from above in this state, the tank segment 1 will be positioned directly above the tank segment 2 by the guide jig 20, making it easy to separate the tank. The joining parts of bodies 1 and 2 can be precisely aligned. Note that this guide jig 20 can be removed after assembly or can be left as is.

After the tank divided bodies are tightened and fixed, as shown in FIG. is fixed to the annular holding frame 16 so as to cover it, and the assembly of the water heater body is completed.

In this way, the tank body is manufactured in parts and then transported to the installation site and assembled, so even large-capacity water heaters can be easily installed in existing rooms with narrow openings, making it easy to install on-site. The water heater can be assembled quickly and easily by simply tightening and fixing the joints of the tank and wrapping the strip of insulation and outer panels around the joints. Can be assembled and installed. Additionally, since the tank can be disassembled and reassembled, it is also possible to move and install a large water heater into an existing room with a narrow opening.

Although the tank body in the above embodiment was cylindrical, it may also have a prismatic cylinder shape with a rectangular cross section.1. Also, when using a horizontal tank instead of the vertical tank as mentioned above, if the tank is large, divide the tank with a vertical cutting line.
It is also possible to divide more than one division. Furthermore, the guide jig welded to the inner side of the joint of the tank may be attached to either the upper or lower tank divided body, and its shape can be arbitrarily set, such as a band plate.

<Effects of the Invention> As explained above, according to the electric water heater and its assembly method of the present invention, since it is constructed as described above, each tank divided body has a heat insulating material attached to its outer periphery, an annular shape holding frame,
The outer panels, heaters, and control panels are assembled in advance at a factory, etc., and after each tank segment is assembled at the installation site, a strip of insulation and outer panels are wrapped around the outer circumference near the joints. It only needs to be fixed, and the installation work of a large water heater can be easily completed on-site in a short time.

Additionally, since the tank can be disassembled and reassembled, it is also possible to install a large water heater in an existing room with a narrow opening.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, Fig. 1 is a front view including a half cross section of the water heater, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged sectional view of the tank joint, and Fig. 4 is an annular holding part. A perspective view of the frame. FIG. 5 is a perspective view when the tank divided bodies are joined. 1.2...Tank division body, 5.6.9...Insulating material, 7.8.15...Outer plate, 16...Annular holding frame.

Claims (2)

[Claims] (1) The tank body is divided into a plurality of parts, a flange is provided at the dividing edge of each tank divided body, a heat insulating material is wrapped around the outer peripheral surface of each tank divided body except for the vicinity of the divided part, and the heat insulating material is An outer plate is attached to the outer periphery of the tank, and the ends of the heat insulating material and the outer plate are supported by an annular holding frame fixed to the outer periphery of the tank divided body. A plurality of guide jigs are fixed, a heater control panel is attached to the outer panel, each of the tank division bodies is assembled, and the joints of the flanges are tightened with bolts with the packing in between, and the parts near the joints of the tank are An electric water heater characterized in that a heat insulating material is wrapped around the outer periphery, and an outer plate is fixed to the annular holding frame around the outer periphery of the heat insulating material. (2) Divide the tank body into a plurality of parts, wrap a heat insulating material around the outer peripheral surface of each divided tank body except for the vicinity of the dividing edge, and hold the ends of the heat insulating material with an annular holding frame, and A plurality of guide jigs for assembling and joining are fixed to the inner ends of the divided tank division bodies, and the plurality of tank division bodies are fixed to the annular holding frame while covering the tank division body, and the plurality of tank division bodies are attached to the annular holding frame. The joints of the flanges provided at the edges of each tank segment are tightened with bolts with the packing in between, a heat insulating material is wrapped around the outer periphery of the tank joint, and the outer panel is wrapped around the outer periphery of the heat insulating material in the annular shape. A method of assembling an electric water heater characterized by fixing it to a holding frame.