JPH04338424A - Electric water heater - Google Patents

Abstract

PURPOSE:To provide a water purifying agent, which is protected on using and easily replaced on degrading, in an electric water heater. CONSTITUTION:A discharge pipe 2 taken out from a water container 1 is connected to a return flow pipe 4 equipped at the upper side face of the water container through a changeover valve 3. And a porous material case 11 containing the purifying agent 10 is fitted to a nearly rectangular box 13 having the opened bottom. And the box 13 is set at the inside of the container 1 of the return flow pipe 4.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater for general household use.

0002

2. Description of the Related Art Conventionally, this type of electric water heater, as shown in FIG.
There was no reflux to the container 20.

0003

[Problems to be Solved by the Invention] In such a conventional configuration, not only is it impossible to purify the liquid contained in the container because there is no purifying agent, but the purifying agent is easily contaminated during daily use. It was not possible to confirm this, and it was difficult to replace the purifying agent.

0004

[Means for Solving the Problems] Therefore, the present invention provides a purifying agent in the upper part of the liquid storage container of an electric water heater, locks this purifying agent storage case in a separate box, and furthermore, A reflux pipe provided at the upper side of the container is fitted into the inside of the container, and an outlet pipe provided in a part of the container is connected to the outside of the reflux pipe via a switching valve device. This is what I did.

[0005]

[Function] With this configuration, in the present invention, the hot water can be purified separately from the hot water taking out, and the purifying agent is inside the container and cannot be seen directly when the lid is closed, so it looks good.
The cleaning agent is kept clean because it is housed in the box, and if the box is made of transparent material, it is possible to see the deterioration of the cleaning agent. Furthermore, since the case containing the purifying agent is fixed and integrated within the box, when changing the purifying agent, the box can be easily replaced by simply attaching and removing the box.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, a lead-out pipe 2 taken out from the bottom of a liquid storage container 1 equipped with a heater at the bottom is connected via a switching valve device 3, with one end provided under the upper side of the container 1. One end is connected to a reflux pipe 4, and the other end is connected to a discharge pipe that discharges to the outside through a pipe 5.

The reflux pipe 4 has a rectangular flange 6 on the inside of the container 1, and has a protrusion 7 between the flange 6 and the outer surface of the reflux pipe 4, and this protrusion 7 fits into the side surface of the container. The rotation is stopped.

On the other hand, the reflux pipe 4 is fixed to the container 1 by the cam plate 9 pulling the cam projection 8 provided on the other part of the outer surface of the reflux pipe 4 through the container 1 .

[0010] Also, a purifying agent 10 made of granular activated carbon etc.
is housed in a case 11 that has a number of slit-like holes on each of the upper and lower surfaces, and the case 11 has a protrusion 12 on the side surface and another protrusion 14 on the inner surface of a substantially rectangular box 13 with an open bottom. The case 11 and the box 13 are integrated.

This integrated box 13 is fitted into the circulation pipe 4 from above by the groove 15 provided in the side surface of the box 13 fitting into the flange 6, and the hook 16 of the box 13 and the flange 6
It is locked by the protrusion 17 of.

The switching valve device 3 is electrically controlled, and the field pushed out from the outlet pipe 2 is flowed to the reflux pipe 4 side for a necessary time.

[0013] At other times, hot water can be taken out flowing to the pipe 5 side in response to an external operation.

The hot water led to the circulation pipe 4 is spouted from the outlet 18, but the hot water flows through the rectifying plate 19 provided in the box 13.
As a result, the purifying agent 10 is uniformly scattered on the left and right sides of the reflux pipe 4.

[0015] Here, since the case 11 containing the purifying agent 10 is inside the box 13, there is no need to worry about it being protected even when adding water or draining the water.

Furthermore, if the box 13 is made of a transparent material or the like, deterioration of the purifying agent inside is always visible, so that it is possible to know when it is time to replace it.

Furthermore, when replacing the purifying agent 10, it is sufficient to remove the box 13 from the reflux pipe 4, then take out the case 11 from the box 13, and replace the case 11 as a whole, making it easy to replace.

It goes without saying that if the liquid is purified, for example, while it is being boiled, no extra time is required for the purification.

[0019]

[Effects of the Invention] As described above, the present invention makes it possible to purify hot water separately from taking out the hot water without requiring extra time, and because the purifying agent is inside the container and cannot be seen directly with the lid on, the appearance is improved. good.

[0020]Also, even if the purifying agent is placed inside the case, it is stored in the upper box which is shaped like a cartridge, so it is safe and protected during liquid injection and water draining operations, and it is also easy to replace the purifying agent. Work is also easy if you just attach and detach the box.

[0021] If the box is made of a transparent material, deterioration of the purifying agent can be seen and replaced at an appropriate time.

[Brief explanation of drawings]

[Fig. 1] A cross-sectional view of essential parts showing an embodiment of an electric water heater of the present invention.

[Figure 2] Exploded arrow view

[Figure 3] Cross-sectional view showing a conventional example

[Explanation of symbols]

1 Container 2 Derivation pipe 3. Switching valve device 4 Circulation pipe 10 Purification agent 11 Case 13 Box

Claims (1)

[Claims] Claim 1: An outlet pipe taken out from a liquid storage container is connected to a reflux pipe provided at the upper side of the container via a switching valve device, and a porous case containing a cleaning agent is connected to a recirculation pipe provided at the bottom of the container. An electric water heater that is locked into an open, substantially rectangular box, and this box is fitted inside the container of the circulation pipe.