JP3468041B2 - Bath water purification unit - Google Patents

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 water pressure protection of a purification tank and equipment protection.

[0002]

2. Description of the Related Art As a conventional bath water purifying unit, there is, for example, one disclosed in JP-A-7-185226. FIG. 2 shows a conventional bath water purification unit, in which a filter body 2 is fixed in a substantially cylindrical housing 1 via a base, and a short cylindrical water supply port 1a is provided at the bottom of the housing 1.
Is provided with a short cylindrical drain port 1b at the upper part. The filter body 2 is fixed to the inner wall of the upper portion of the housing 1 by forming a gap 3 at a predetermined interval. A circulation pipe 6 connects the water inlet 1a and the circulation pump 4, the circulation pump 4 and the bath 5, and the drain 1b and the bath 5. Next, the operation of the conventional bath water purification unit will be described. The bath water pumped from the bathtub 5 by the circulation pump 4 enters the housing 1 through the water supply port 1a, and the bath water that enters the housing 1 passes through the filter body 2 and reaches the drain port 1b. It is divided into a flow b that does not pass through the filter body 2 but through the void 3 and reaches the drainage port 1b, but merges near the drainage port 1b and is returned to the bathtub 5 again through the circulation pipe 6. .
As an effect of the above configuration, when the filter body 2 is continuously used for a long period of time, clogging or the like occurs, and the flow rate of the flow a decreases, the flow rate of the flow b of the void portion 3 increases. Flow rate is secured. This makes it possible to place an excessive burden on the circulation pump 4 and the like, and reduce the need for immediate replacement of the filter body 2.

[0003]

Since the conventional bath water purification unit has the above-mentioned structure, it has the following problems. That is, when the filter body 2 is clogged, the flow rate through the void 3 is increased so as to ensure a predetermined flow rate or more. On the other hand, it is necessary to increase the cross-sectional area, but if a too large gap is provided, the flow a in the normal state in which the filter body 2 is not clogged will be relatively reduced. There is a problem that sufficient circulation filtration cannot be performed. Further, if the space 3 is set to be small in order to avoid the above-mentioned problem, the space formed between the inner wall of the housing 1 and the outer wall of the filter body 2 (C portion in the figure) and the filter body 2 will be described.
The pressure difference due to the water pressure with the space (D in the figure) formed inside the filter increases, and the water pressure easily causes deformation or destruction of the filter body 2. If reinforcement is performed to prevent the deformation or destruction, the cost will be reduced. There was a problem such as an increase in The present invention has been made to solve the above-mentioned problems, and a bath water purification unit that can alleviate the water pressure applied to the purification material and equipment at the time of clogging and suppress the cost increase for reinforcement. The purpose is to provide.

[0004]

A bath water purification unit according to the present invention comprises a purification material storage chamber for storing a purification material for purifying the bath water and a bath water recovery chamber for collecting the purified bath water. An inner tank, a bath containing the inner tank and communicating with a purifying material storage chamber of the inner tank to supply bath water to the purifying material and a bath water collecting chamber of the inner tank, and a bath after purification In a bath water purification unit including an outer tank having a discharge port for discharging water, the inner tank has a first bypass flow path that directly reaches the bath water recovery chamber without passing through the purification material storage chamber. And a second bypass flow path that is provided in parallel with the purification material storage chamber and directly reaches the bath water recovery chamber.

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

Further, the flow passage cross-sectional area of the bypass flow passage is
It is set to be smaller than the minimum cross-sectional area of the purification material stored in the purification material storage chamber.

Further, the flow passage cross-sectional areas are set so that the flow rate of the bath water flowing through the second bypass flow passage and the flow rate of the bath water flowing through the bypass flow passage are substantially the same.

[0008]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1. Hereinafter, the bath water purification unit of the present invention will be described. 1 is a sectional view showing a first embodiment of the present invention, 4 is a circulation pump for pumping the bath water in a bath 5 to a purification unit, 6 is a circulation pump 4 and the purification unit between the circulation pump 4 and the bath 5. And the purifying unit and the bathtub 5, respectively. An outer tank 7 has a supply port 7a for supplying bath water and a discharge port 7b for discharging the 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 purification material storage chamber 8a for storing a large number of small columnar purification materials 9 and a lower portion of the purification material storage chamber 8a. It is provided with a bath water recovery chamber 8b which is provided so as to recover the purified bath water and guide it to the outlet 7b of the outer tank 7. Reference numeral 8c denotes a bath water recovery chamber 8b without passing through the purification material storage chamber 8a from the supply port 7a of the outer tank 7.
First bypass flow paths 8c, 8 formed so as to directly reach the
Reference numeral d is a second bypass flow path that is provided in parallel with the purification material storage chamber 8a that stores the purification material 9 and also directly reaches the bath water recovery chamber 8b without passing through the purification material storage chamber 8a. In the first embodiment, each flow rate of the first bypass flow path 8c or the second bypass flow path 8d is set to about 5% or less of the flow rate of the supply port 7a or the discharge port 7b. The road cross-sectional area is preset.
Next, the operation of the above configuration will be described. The bath water pumped up from the bathtub 5 by the circulation pump 4 is filled into the space between the outer tank 7 and the inner tank 8 from the water supply port 7a of the outer tank 7, and the bath water flows through the upper tank of the inner tank 8 respectively. Flow e from the hole 8e to the bath water recovery chamber 8b passing through the bath 8a containing the bath 9 and the bath water directly from the first bypass passage 8c provided in the lower portion of the inner tank 8. The flow f to the recovery chamber 8b and the water passage hole 8e in the upper part of the inner tank 8 to the bath water recovery chamber 8b through the second bypass flow passage 8d provided in parallel with the purification material storage chamber 8a. After being divided into three streams of flow g, they are merged in the bath water recovery chamber 8b and become one stream, which is discharged from the discharge port 7b of the outer tank 7 and returned to the bathtub 5 through the circulation pipe 6. . Then, according to the configuration of the first embodiment, when the purifying material 9 is clogged and the flow e passing through the purifying material storage chamber 8a is reduced, the inner tank 8 and the outer tank 7 have the same structure. First bypass channel 8c directly communicating with the outlet 7b
Then, the flow rate from the second bypass flow passage 8d provided in parallel with the purification material purification material storage chamber 8a in the inner tank 8 is increased, whereby a predetermined flow rate is secured, and the circulation pump 4
It is possible to prevent an excessive burden from being applied to the above and to force the immediate replacement of the cleaning material 9. Further, in order to exert an appropriate purification performance even when the purifying material 9 is not clogged, the first bypass passage 8c and the second bypass passage 8d may have a small passage cross-sectional area. Since the bypass flow passages are provided on both sides of the upper part and the lower part, the circulating water pressures cancel each other out, and the circulating water pressures generated in the purifying material 9 and the purifying material purifying material storage chamber 8a are caused. The pressure difference can be reduced, and the purification material 9 and the purification material storage chamber 8
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 passage cross-sectional area of the second bypass flow passage 8d is smaller than the minimum cross-sectional area of the purification material 9 having a small columnar shape. By setting the value as small as possible, 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 path 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 passage cross-sectional area of the first bypass flow passage 8c is the minimum cutoff of the purification member 9 having a small columnar shape. By setting the area smaller than the area, not only the same effect as the effect obtained in the first embodiment can be obtained, but the purification material 9 stored in the purification material storage chamber 8a passes through the first bypass passage 8c. Can be prevented from leaking 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 passage 8c and the second bypass passage 8d flow. By setting the flow passage cross-sectional areas so that the flow rates of the bath water are almost the same, not only the same effects as those obtained in the first embodiment can be obtained, but also the inner tank 8 has the above-mentioned effects. 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 the same, the circulating water pressure by the bypass flow passage is reliably offset, and thus the inner tank 8
It is possible to minimize the water pressure difference applied to the purification material storage chamber 8a and the purification material 9.

[0012]

As described above, according to the present invention, even when the purification material is clogged and the flow of bath water passing through the purification material is reduced, the first bypass passage and the second bypass passage By providing the bypass flow path of 1, the predetermined flow rate is secured, and it is not necessary to place an excessive burden on the circulation pump or the like and to force the immediate replacement of the purification material. Further, even if the cross-sectional areas of the first bypass flow passage and the second bypass flow passage are configured to be small in order to exert an appropriate purification performance even when the purification material is not clogged, the inner tank It is possible to reduce the pressure difference due to the circulating water pressure generated in the purifying material and the purification material, and it is possible to suppress an increase in cost for reinforcement.

Further, according to the invention of claim 2, in addition to the effect equivalent to the effect of claim 1, the effect that the purifying agent can be prevented from flowing out from the second bypass passage. To be

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

Further, according to the invention of claim 4, in addition to the same effect as that of claim 1, the difference in water pressure applied to the purifying material and the purifying material purifying material storage chamber can be minimized. it can.

[Brief description of drawings]

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

FIG. 2 is a cross-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 purification material storage chamber, 8b bath water recovery chamber, 8c
First bypass channel, 8d second bypass channel, 9
Purifying material.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-192420 (JP, A) JP-A-7-308530 (JP, A) JP-A-7-308532 (JP, A) JP-A-9- 174080 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B01D 35/027 B01D 35/147 A47K 3/00

Claims (4)

(57) [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 containing the inner tank, The tank is provided with a supply port for supplying the purifying material with the bath water communicating with the purifying agent storage chamber, and an outer tank having a discharge port for communicating the purifying agent with the bath water collecting chamber of the inner tank. In the bath water purifying unit, the inner tank is provided in parallel with the first bypass flow path directly to the bath water collecting chamber without passing through the purifying material storage chamber, and in parallel with the purifying material storage chamber. A bath water purification unit having a second bypass flow path directly to the bath water recovery chamber. 2. The bath water according to claim 1, wherein the flow passage cross-sectional area of the second bypass flow passage is set to be smaller than the minimum cross-sectional area of the purification material stored in the purification material storage chamber. Purification unit. 3. The bath water according to claim 1, wherein the flow passage cross-sectional area of the first bypass flow passage is set to be smaller than the minimum cross-sectional area of the purification material stored in the purification material storage chamber. Purification unit. 4. The flow channel cross-sectional area according to claim 1, wherein the flow rate of the bath water flowing through the first bypass channel and the flow rate of the bath water flowing through the second bypass channel are substantially the same. The bath water purification unit is characterized by setting.