JPH05176854A - Drain treating method of overflow bath tub apparatus - Google Patents

Abstract

PURPOSE:To drain an auxiliary bath tub automatically with the drainage of a hot water in the bath tub. CONSTITUTION:A drain cock 9 is provided on the bottom part of a bath tub 2 and a drain valve 10 is provided on the bottom part of a minitank 7. The minitank 7 is provided with a water level switch 11. The drain valve 10 and the water level switch 11 are made to operate under the control of a control means at a hot water heater 3. Hot water not only in the bath tub 2 but also in an auxiliary bath tub is drained automatically thereby saving time and labor. The use of a high temperature hot water allows the checking of dirt, scale or the like from adhering to the inside of the auxiliary bath tub as well as to the inside of a piping.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste water treatment method for an overflow bath device which can provide a cleaning action.

[0002]

2. Description of the Related Art Recently, hot water has been supplied to make it overflow.
A so-called overflow bathtub device, which has an auxiliary bathtub for collecting overflowing warm water, has been commercialized. In such an overflow bathtub device, when bathing, hot water overflows and accumulates in the auxiliary bath, turning on the auxiliary bath water level switch,
The pump is operated to collect the overflowed hot water, and the hot water is filtered by the filter provided in the water heater to be returned to the bath again. By the way, the hot water in the bathtub is gradually polluted by the bathing, so it is desirable to replace it with fresh hot water after each bathing in order to have a comfortable bathing. However, in reality, from the economical point of view, the current situation is that hot water is repeatedly used several times. In addition, dust and scales in the warm water, and further slime caused by bacteria that propagate due to the adherence of the scales stick to the inner wall of the bathtub or the like. Therefore, washing work is indispensable when replacing with new warm water.

[0003]

However, in the overflow bathtub apparatus as described above, when the hot water is replaced, the hot water in the auxiliary bathtub must be drained in addition to the bathtub, and the inner wall of the bathtub cannot be washed. However, I sometimes forget about the auxiliary bathtub. Furthermore, it is desirable to clean the inside of the pipes, but it takes time and labor, and it results in a rough feeling, resulting in the loss of comfortable bathing. The present invention has been made to solve such a problem.

[0004]

In order to solve the above-mentioned problems, the present invention provides a bathtub with which a water heater is connected and connected through a hot water circulation pipe and an auxiliary bathtub for collecting overflow hot water. In the overflow bath device, the hot water in the bath is drained, and after draining a predetermined amount, the auxiliary bath is drained. Further, according to the present invention, after draining hot water in the auxiliary bath, the auxiliary bath is filled with hot water having a temperature higher than the optimum temperature for bathing, and then drained.

[0005]

Function: The hot water in the bathtub is drained, and the hot water in the auxiliary bathtub is also automatically drained, which saves labor. Further, the high-temperature hot water can suppress the adhesion of dust, scale, etc. not only in the auxiliary bath but also in the pipe.

[0006]

EXAMPLES Next, a method for treating waste water of an overflow bath device according to the present invention will be described in detail below with reference to an example. In FIG. 1, reference numeral 1 indicates an overflow bathtub apparatus according to the present invention. The overflow bathtub apparatus 1 includes a bathtub 2, a water heater 3, and an additional heating return pipe 5 and an additional heating pipe that constitute a hot water circulation pipe 4. It is connected and connected via 6. The overflow bathtub device 1 is provided with an auxiliary bathtub, that is, a mini-tank 7, which is provided in the bathtub 2 so that hot water is supplied to the overflow to make it overflow. A mini-tank return pipe 8 for collecting hot water is connected to the water heater 3 from the bottom of the mini-tank 7.

A drain plug 9 is provided at the bottom of the bath 2 and a drain valve 10 is provided at the bottom of the mini tank 7. Further, the mini tank 7 is provided with a water level switch 11. The drain valve 10 and the water level switch 11 are configured to operate under the control of control means (not shown) in the water heater 3. A predetermined water level of the hot water in the bathtub 2 is set in the control means of the water heater 3.

In the overflow bathtub apparatus 1 having the above-described structure, when the hot water in the bathtub 1 becomes contaminated, the drain plug 9 is pulled out to drain the water. The control means in the water heater 3 monitors the water level and opens the drain valve 10 when the hot water in the bathtub 1 drops 30 cm below the preset water level.
Drain hot water in the mini tank 7. In this way, it is not necessary to forget to drain the contaminated hot water in the mini tank 7, and the labor can be saved.

Next, after the hot water in the bath 1 and the mini-tank 7 is drained, cleaning work is carried out because dust, scales and the like adhere to the inner wall of each. That is, when the water level in the mini tank 7 is detected to be 0 by the water level switch 11, the hot water from the water heater 3 has a temperature higher than the optimum temperature for bathing.
(For example, 60 ° C.) is supplied into the mini tank 7 through the mini tank return pipe 8. Then, open the drain valve 10,
Drain hot water in the mini tank 7. At this time, the hot water of high temperature may be supplied into the bathtub 1 at the same time via the additional heating return pipe 5 or the additional heating pipe 6. As a result, the inside of the mini tank 7, the mini tank return pipe 8, the additional heating return pipe 5, or the additional heating pipe 6 is exposed to high-temperature hot water, so that peeling and dropping of dust, scale, etc. are promoted and adhesion is suppressed. You can

[0010]

As described above, according to the present invention, the hot water in the bathtub is drained and the hot water in the auxiliary bath is automatically drained, which saves labor. Further, the high-temperature hot water can suppress the adhesion of dust, scale, etc. not only in the auxiliary bath but also in the pipe.

[0011]

[Brief description of drawings]

FIG. 1 is a schematic overall system diagram of an overflow bathtub device according to the present invention.

[Explanation of symbols]

 1 Overflow bathtub device 2 Bathtub 3 Water heater 4 Hot water circulation pipe 5 Boiler return pipe 6 Boiler return pipe 7 Mini tank 8 Mini tank return pipe 9 Drain plug 10 Drain valve 11 Water level switch

Claims (2)

[Claims] 1. A hot water supply device is connected to a bathtub through a hot water circulation pipe, and in an overflow bathtub device provided with an auxiliary bathtub for collecting overflowed hot water, the hot water in the bathtub is drained, and when a predetermined amount is drained. A drainage treatment method for an overflow bathtub device, comprising draining the auxiliary bathtub. 2. The overflow bathtub apparatus according to claim 1, wherein after draining the hot water in the auxiliary bathtub, the auxiliary bathtub is filled with hot water having a temperature higher than an appropriate temperature at the time of bathing and then drained. Wastewater treatment method.