JPH1147518A - Bath water purification unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath water purification unit which can moderate water pressure applied to a purification material and appliances at the time when clogging occurs and suppresses increase in the cost for reinforcement. SOLUTION: This bath water purification unit comprises an inner tank 8 provided with a purifying material-housing chamber 8a to house a purifying material 9 and a bath water-recovering chamber 8b to recover bath water after purification and an outer tank enveloping the inner tank and provided with a supply inlet 7a to supply bath water and a discharge outlet 7b communicated with the bath water-recovering chamber 8b. In the inner tank 8a, a first bypass flow route 8c directly connected with the bath water-recovering chamber 8b while bypassing the purifying material-housing chamber 8a is installed in the lower part and a second bypass flow route 8d directly connected with the bath water-recovering chamber 8b is installed in the upper part in parallel to the purifying material-housing chamber 8a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purification unit, and more particularly to protection of water pressure in a purification tank and protection of equipment.

[0002]

2. Description of the Related Art As a conventional bath water purifying unit, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 7-185226. FIG. 2 shows a conventional bath water purification unit, in which a filter body 2 is fixed through a base in a substantially cylindrical housing 1 and a short cylindrical water supply port 1a is provided below the housing 1.
Is provided with a short cylindrical drain port 1b at the top. The filter body 2 is fixed by forming a gap 3 at a predetermined interval between the filter body 2 and the upper inner wall of the housing 1. A circulation pipe 6 connects between the water supply port 1 a and the circulation pump 4, between the circulation pump 4 and the bathtub 5, and between the drainage port 1 b and the bathtub 5. Next, the operation of the conventional bath water purification unit will be described. Bath water pumped from the bathtub 5 by the circulation pump 4 enters the housing 1 from the water supply port 1a, and the bath water entering the housing 1 flows through the filter body 2 to the drain port 1b, It is separated from the flow b that reaches the drain port 1b through the gap 3 without passing through the filter body 2, but merges near the drain port 1b and returns to the bathtub 5 again through the circulation pipe 6. .
As an effect of the above-described configuration, clogging or the like occurs due to continuous use of the filter body 2 for a long period of time, and when the flow rate of the flow a decreases, the flow rate of the flow b of the gap portion 3 increases. Flow rate is ensured. Thus, an excessive load is applied to the circulation pump 4 and the like, and the necessity of immediately replacing the filter body 2 can be reduced.

[0003]

Since the conventional bath water purifying unit has the above-described structure, it has the following disadvantages. That is, when clogging occurs in the filter body 2, the flow rate of the entire flow passage is reduced by increasing the flow b passing through the gap 3 to secure a predetermined flow rate or more. While it is necessary to increase the cross-sectional area, if the gap is too large, the flow a in a normal state where the filter body 2 is not clogged relatively decreases, and the filter body 2 The problem that sufficient circulating filtration cannot be performed occurs. Further, if the gap 3 is set small to avoid the above problem, the space (C in the figure) formed between the inner wall of the housing 1 and the outer wall of the filter body 2 and the filter body 2
The pressure difference due to the water pressure with the space (D part in the figure) formed inside the filter increases, and the water pressure tends to cause deformation or destruction of the filter body 2. There were problems such as an increase in The present invention has been made in order to solve the above-mentioned disadvantages, and a bath water purification unit that can reduce the water pressure applied to the purifying material and equipment at the time of eye, that is, can suppress the increase in the cost for reinforcement. The purpose is to provide.

[0004]

A bath water purifying unit according to the present invention comprises a purifying material storage chamber for storing a purifying material for purifying bath water and a bath water collecting chamber for recovering purified bath water. An inner tank, which contains the inner tank, communicates with the purifying material storage chamber of the inner tank to supply bath water to the purifying material, and communicates with the bath water collecting chamber of the inner tank to clean the bath after purification. A bath water purification unit having an outer tank provided with a discharge port for discharging water, wherein the inner tank has a first bypass flow path directly to the bath water recovery chamber without passing through the purifying material storage chamber. And a second bypass flow path provided in parallel with the purifying material storage chamber and directly reaching the bath water recovery chamber.

Further, the cross-sectional area of the second bypass flow passage is set smaller than the minimum cross-sectional area of the purifying material stored in the purifying material storage chamber.

[0006] The cross-sectional area of the bypass channel is
The cleaning material is set to be smaller than the minimum sectional area of the cleaning material stored in the storage room.

Further, the cross-sectional area of each of the flow paths is set such that the flow rate of the bath water flowing through the second bypass flow path and the flow rate of the bath water flowing through the bypass flow path are substantially the same.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, the bath water purification unit of the present invention will be described. FIG. 1 is a sectional view showing a first embodiment of the present invention. Reference numeral 4 denotes a circulation pump for pumping bath water in a bathtub 5 to a purification unit, 6 denotes a space between the circulation pump 4 and the bathtub 5, and a circulation pump 4 and a purification unit. , And between the purification unit and the bathtub 5. An outer tank 7 has a supply port 7a for supplying bath water and a discharge port 7b for discharging bath water. Reference numeral 8 denotes an inner tank contained in the outer tank 7, a water passage hole 8e on the upper surface, a purifying material storage room 8a for accommodating a large number of small columnar purifying materials 9, and a lower part of the purifying material storing room 8a. A bath water recovery chamber 8b provided so as to collect the purified bath water and guide it to the discharge port 7b of the outer tank 7. 8c is a bath water recovery chamber 8b which does not pass from the supply port 7a of the outer tank 7 to the purifying material storage chamber 8a.
Bypass passages 8c, 8 formed so as to directly reach
Reference numeral d denotes a second bypass flow passage provided in parallel with the purifying material storage chamber 8a for storing the purifying material 9, and also directly to the bath water recovery chamber 8b without passing through the purifying material storing chamber 8a. In the first embodiment, each flow is set so that the flow rate of the first bypass flow path 8c or the second bypass flow path 8d is about 5% or less of the flow rate of the supply port 7a or the discharge port 7b. The road cross section is set in advance.
Next, the operation of the above configuration will be described. The bath water pumped from the bath tub 5 by the circulation pump 4 is filled into the space between the outer tank 7 and the inner tank 8 through a water supply port 7a of the outer tank 7, and the bath water flows through the upper part of the inner tank 8 respectively. The flow e from the hole 8e to the bath water recovery chamber 8b through the purifying material storage chamber 8a in which the purifying material 9 is stored, and from the first bypass flow path 8c provided in the lower part of the inner tank 8, the bath water The flow f reaching the recovery chamber 8b and the flow from the water passage hole 8e on the upper part of the inner tank 8 to the bath water recovery chamber 8b through the second bypass flow path 8d provided in parallel with the purifying material storage chamber 8a. After being divided into the three flows of the flow g, they are merged in the bath water recovery chamber 8b, are discharged as one flow from the discharge port 7b of the outer tank 7, and are returned to the bathtub 5 through the circulation pipe 6. . According to the configuration of the first embodiment, when the purifying material 9 is clogged or the like and the flow e passing through the purifying material storage chamber 8a decreases, the inner tank 8 First bypass channel 8c directly communicating with discharge port 7b
A predetermined flow rate is ensured by increasing the flow from the second bypass flow passage 8d provided in parallel with the purifying material storage chamber 8a in the inner tank 8, so that the circulation pump 4
It is possible to prevent an excessive load from being imposed on the members and to force the immediate replacement of the cleaning material 9. Further, in order to exhibit an appropriate purifying ability even when the purifying material 9 is not clogged, the flow path cross-sectional area of the first bypass flow path 8c and the second bypass flow path 8d may be reduced. Since the bypass flow path is provided on both sides of the upper and lower parts, the circulating water pressures cancel each other, and the circulating water pressure generated in the purifying material 9 and the purifying material purifying material accommodating chamber 8a is reduced. The pressure difference can be reduced, and the purifying material 9 and the purifying material storage room 8 can be reduced.
It is possible to suppress an increase in cost for reinforcing a.

Embodiment 2 Further, as another embodiment of the present invention, in the configuration of the first embodiment shown in FIG. 1, the flow path cross-sectional area of the second bypass flow path 8d is made smaller than the minimum cross-sectional area of the small columnar purifying material 9. By setting a smaller value, not only the same effect as the effect obtained in the first embodiment can be obtained, but also the purification material 9 stored in the purification material storage chamber 8a passes through the second bypass flow passage 8d to the outside. Can be prevented from flowing out.

Embodiment 3 Further, as still another embodiment of the present invention, in the configuration of the first embodiment shown in FIG. 1, the flow path cross-sectional area of the first bypass flow path 8c is reduced to the minimum cut-off of the small cylindrical purifying material 9. By setting the area smaller than the area, not only the same effect as that obtained in the first embodiment can be obtained, but also the purifying material 9 stored in the purifying material storage chamber 8a passes through the first bypass flow path 8c. Outflow to the outside.

Embodiment 4 Furthermore, as another embodiment of the present invention, in the fairness of the first embodiment shown in FIG. 1, the flow rate of the bath water flowing through the first bypass flow path 8c and the flow rate of the bath water flowing through the second bypass flow path 8d. By setting the cross-sectional area of each flow path so that the flow rate of the bath water is substantially the same, not only the same effect as that obtained in the first embodiment can be obtained, but also the inner tank 8 Since the flow rates of the bath water flowing through the first bypass flow passage 8c and the second bypass flow passage 8d are substantially equal to each other, the circulating water pressure by the bypass flow passage is surely cancelled, so that the inner tank 8
The water pressure difference between the purifying material storage chamber 8a and the purifying material 9 can be minimized.

[0012]

As described above, according to the present invention, even if the purifying material is clogged or the like and the flow of bath water passing through the purifying material is reduced, the first bypass flow path and the second By providing the bypass flow path, a predetermined flow rate is ensured, so that an excessive load is imposed on the circulating pump and the like, and no immediate replacement of the purifying material is required. Further, in order to exert an appropriate purifying ability even when the purifying material is not clogged, even if the cross-sectional area of the first bypass flow path and the second bypass flow path is made small, the inner tank is not affected. Pressure difference due to the circulating water pressure generated in the cleaning material and the purification material can be reduced, and increase in cost for reinforcement can be suppressed.

According to the second aspect of the present invention, in addition to the effect equivalent to that of the first aspect, an effect of preventing the purifying material from flowing out of the second bypass flow path is obtained. Can be

According to the third aspect of the present invention, the same effect as that of the first aspect can be obtained, and in addition, the effect of preventing the purifying material from flowing out of the bypass passage can be obtained.

Further, according to the invention of claim 4, in addition to obtaining the same effect as the effect of claim 1, it is possible to minimize the difference in water pressure applied to the purifying material and the purifying material storage chamber. it can.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a bath water purification unit according to the present invention.

FIG. 2 is a sectional view showing a conventional bath water purification unit.

[Explanation of symbols]

7 outer tank, 7a supply port, 7b discharge port, 8 inner tank, 8a purifying material storage room, 8b bath water recovery room, 8c
First bypass channel, 8d Second bypass channel, 9
Purifying material.

Claims (4)

[Claims] 1. An inner tank having a purifying material storage chamber for storing a purifying material for purifying bath water, a bath water collecting chamber for collecting the purified bath water, and an inner tank including the inner tank. It has a supply port for supplying the purifying material with the bath water connected to the purifying material storage chamber of the tank, and an outer tank having a discharge port for discharging the purified bath water communicating with the bath water collecting chamber of the inner tank. In the bath water purification unit, the inner tank is provided in parallel with a first bypass flow path that directly goes to the bath water recovery chamber without passing through the purification material storage chamber and the purification material storage chamber. A bath water purification unit comprising a second bypass flow path directly leading to a bath water recovery chamber. 2. The bath water according to claim 1, wherein a flow path cross-sectional area of the second bypass flow path is set smaller than a minimum cross-sectional area of the purifying material stored in the purifying material storage chamber. Purification unit. 3. The bath water according to claim 1, wherein a flow path cross-sectional area of the first bypass flow path is set smaller than a minimum cross-sectional area of the purifying material stored in the purifying material storage chamber. Purification unit. 4. The cross-sectional area of each flow path according to claim 1, wherein the flow rate of the bath water flowing through the first bypass flow path and the flow rate of the bath water flowing through the second bypass flow path are substantially the same. Bath water purification unit characterized by setting.