JPH0725911U - Circulating purifier for bath - Google Patents

Abstract

(57) [Summary] [Purpose] The circulation pump side and the filter side can be divided into two parts to reduce the overall size, and the installation work can be facilitated and the filter can be easily handled during cleaning. To provide a circulating purifying device for baths. [Structure] This circulating purifier for bath is a circulation pump
6 and the filter 14 filled with the granular filter medium 51 are connected in series, and the hot water in the bathtub 2 is circulated by the circulation pump 6,
The hot water in the bathtub 2 is purified by filtering with the filter 14. The circulation pump 7 is arranged outside the bath 2 and the filter 14 is arranged in the hot water of the bath 2, respectively, and the filter 14 is detachably connected to the circulation pump 7 side in the hot water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a circulation type purification device for a bath.

[0002]

[Prior art]

 As a circulating purifying apparatus for bath, for example, as shown in FIG. 8, there is a circulating hot water purifying apparatus that circulates the hot water in the bathtub 60 and filters the hot water while controlling the hot water temperature. This circulating hot water purifier includes a heater 63, a filter 64 and a circulation pump 65 inside a case body 62 having a top cover 61, and a suction section 66 and a discharge section 67 at the bottom of the case body 62. The heater 63, the filter 64, and the circulation pump 65 are connected in series between the suction unit 65 and the discharge unit 67 through pipes 67 to 71, and the suction pipe 72 is connected to the suction unit 66 and the discharge unit 67. The discharge pipes 73 are connected to 67, respectively.

The filter 64 includes a filtration tank 75 having a tank cover 74, and a granular filtration layer 76 filled with a porous filtration material formed by firing zeolite, barley stone, alumina, or the like into a granular form. The tank cover 74 has a leak valve 76. Then, the hot water in the bathtub 60 is pumped up by the circulation pump 65 into the filter 64 through the suction pipe 72, the heater 63, etc., and heated by the heater 63 to be controlled to a predetermined temperature. Is passed under the granular filtration layer 76 to be filtered, and the filtered hot water is again discharged into the bath 60 through the discharge pipe 73.

In the filter 64, a gelatinous film is formed on the surface of the granular filtration layer 76, and microorganisms such as bacteria propagate on this gelatinous film to secrete agar. Then, when the hot water passes through the granular filtration layer 76 from the top to the bottom at a slow speed, the slow filtration due to the sieving action, the precipitation action, the adsorption action, and the biological action causes the fine water particles that become dirty and turbid. It removes dust, organic substances, etc., and also removes odors, ammonia, iron, etc. to make clean water.

[0005]

When the hot water is slowly filtered by the granular filtration layer 76 in the filter 64, the slower the flow rate of the hot water in the filtration tank 75 is, the more efficient the removal of organic substances by the granular filtration layer 76 is. Will get better. However, conventionally, since the filter 64 is incorporated into the case body 62 together with the circulation pump 65, there is a drawback that the case body 62 becomes very large. Moreover, since the filter 64 is located above the case body 62, when the filter 64 is filled with hot water, the center of gravity on the side of the case body 62 increases. Therefore, when installing this circulating hot water purifier in the existing bathtub 60, special installation work is required.

Further, the granular filtration layer 76 in the filter 64 needs to be regularly cleaned. In this case, first, the top cover 61 of the case body 62 and the tank cover 74 of the filtration tank 75 are removed, and then the filtration material in the filtration tank 75 is taken out and washed. However, if the circulation pump 65 is on the downstream side of the filter 64, the inside of the filtration tank 75 is in a negative pressure state, so it is necessary to open the leak valve 76 to release the negative pressure state and then remove the tank cover 74. In addition, since the hot water of the circulation pump 65 needs to be stored in the filtration tank 75 after the cleaning, the handling at the time of cleaning is very complicated.

Contrary to FIG. 8, when the circulation pump 65 is on the upstream side of the filter 64, the inside of the filtration tank 75 is in a positive pressure state, so the tank cover 74 is attached with a plurality of screws. Since it is fixed so that the hot water does not leak, it is necessary to loosen this screw before removing the tank cover 74, which is the same as the above-mentioned case in that handling during cleaning is very complicated.

[0008] In view of such conventional problems, the present invention can divide the circulation pump side and the filter side into two parts to reduce the overall size, facilitate the installation work, and clean the filter. It is an object of the present invention to provide a circulation type purification device for a bath that can be easily handled during purification.

[0009]

[Means for Solving the Problems]

 According to the present invention as set forth in claim 1, the circulation pump 6 and the filter 14 are connected in series, the hot water in the bathtub 2 is circulated by the circulation pump 6, and the hot water in the bathtub 2 is filtered by the filter 14. In the circulation type purification device for baths, the circulation pump 7 is placed outside the bathtub 2, the filter 14 is placed in the hot water of the bathtub 2, and the filter 14 is placed against the circulation pump 7 side. It is connected detachably in hot water.

The present invention according to claim 2 is the device according to claim 1, wherein the filter 14 is arranged at a corner of the bathtub 2, and the filter 14 is detachably attached to the side wall 2 a of the bathtub 2. A suction board 45 for fixing is provided.

According to a third aspect of the present invention, in the device according to the first or second aspect, the case 18 of the filter 14 is provided with a granular filter layer 21 filled with granular filter material 51 and fibers 53. A fiber filtration layer 22 filled randomly is provided on the upper and lower sides.

[0012]

[Action]

 In the present invention according to claim 1, when the circulation pump 6 is activated, the hot water in the bathtub 2 is sucked and pumped up through the filter 14 in the bathtub 2, and the hot water is filtered by the filter 14 to be cleaned. , Return to bathtub 2 again. In this case, the circulation pump 7 and the filter 14 are divided into two, and the circulation pump 7 is placed outside the bathtub 2 and the filter 14 is placed in the hot water of the bathtub 2. Become . Further, since the filter 14 filled with hot water at the time of use is in the hot water of the bathtub 2, and the circulation pump 7 side may be arranged outside the bathtub 2, construction at the time of installation is easy.

Moreover, since the filter 14 is constantly subjected to the buoyancy of the hot water in the bathtub 2, it can be fixed by a simple fixing means. When cleaning the filter 14, the filter 14 is separated from the circulating pump 7 side in the hot water of the bath 2 and taken out of the bath 2. Therefore, the filter 14 can be easily removed and washed. In this case, since the filter 14 is attached and detached in the hot water of the bathtub 2, the hot water on the circulation pump 7 side does not flow back to the bathtub 2 side, and after the filter 14 is washed, the priming water is put on the circulation pump 7 side. No need.

Further, in the present invention as set forth in claim 2, since the filter 14 is arranged at the corner of the bathtub 2, when the filter 14 is in the hot water of the bathtub 2, when the user takes a bath The filter 14 does not get in the way. Moreover, since the filter 14 is detachably fixed to the side wall 2a of the bath 2 by the suction plate 45, the filter 14 can be easily attached and detached during cleaning.

According to the third aspect of the present invention, the case 18 is provided with the granular filter layer 21 filled with the granular filter material 51 and the fiber filter layer 22 randomly filled with the fibers 53 in the upper and lower sides. Since there is the fiber filtration layer 22, the hot water flows substantially evenly throughout the granular filtration layer 21, and the filtration efficiency in the granular filtration layer 21 is improved. In addition, both the granular filtration layer 21 and the fiber filtration layer 22 can slowly filter hot water, and the fiber filtration layer 22 can reliably filter fine dust and the like, which significantly improves the filtering ability. To do.

[0016]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a schematic configuration diagram of a circulating hot water purifying apparatus for a bath, FIG. 2 is a cross-sectional view of a filter attached state, FIG. 3 is a plan view of a filter attached state, and FIG. 4 is a cross-sectional view of the filter. FIG. 6 is an exploded perspective view of the filter.

In FIGS. 1 to 3, reference numeral 1 denotes a case body having a substantially fan shape in plan view, which is fixed on a corner portion of the bathtub 2. The case body 1 has a detachable top cover 3, and a suction portion 4 and a discharge portion 5 projecting downward inside the bathtub 2 are provided on the bottom portion. A heater 6 and a circulation pump 7 are provided inside the case body 1, and the heater 6 and the circulation pump 7 are connected in series between the suction section 4 and the discharge section 5 via pipes 8 to 10. ing.

The suction part 4 is connected to a suction pipe 11 that projects into the hot water in the bath 2, and the discharge part 5 is connected to a discharge pipe 12 that returns the purified hot water into the bath 2. A check valve 13 for preventing backflow is provided at the lower end of the suction pipe 11, and a filter 14 is detachably connected to the lower side of the check valve 13. The check valve 13 is for preventing hot water in the suction pipe 11 from flowing back into the bathtub 2 when the circulation pump 7 is stopped. A jet port 15 for jetting hot water is provided at the lower end of the discharge pipe 12.

The heater 6 is for heating the hot water sucked by the suction pipe 11 and drawn from the bathtub 2, and is designed to heat the hot water to a desired temperature set by the temperature setting button. An inverted U-shaped pipe 16 and a flow sensor 17 are provided in a pipe 12 between the circulation pump 7 and the discharge unit 5.

The filter 14 is arranged in the hot water at the corner of the bath 2 and is detachably connected to the circulating pump 7 side in the case body 1, that is, the lower end side of the suction pipe 11 in the hot water. As shown in FIGS. 3 and 4, the filter 14 has a hollow case 18, a filter plate 20 vertically stacked in a filter chamber 19 of the case 18, a granular filter layer 21 and The fiber filtration layer 22, the flat inflow chamber 25 and the outflow chamber 26 formed above and below the filtration plate 20, the granular filtration layer 21, and the fiber filtration layer 22 via the pressing plate 23 and the receiving plate 24, and the case 18 Up and down inflow passages 27 and outflow passages 28 provided on both left and right sides of the inflow passage 27 and outflow passages 28 are provided.

The case 18 has a substantially vertical flat plate-shaped front wall 31 and a rear wall 32 protruding from both ends of the front wall 31 along the side walls 2a at the corners of the bathtub 2 in a mountain shape. As shown in FIG. 5, it has a triangular shape, and is divided into an upper case 33 and a lower case 34 above the pressing plate 23. As shown in FIG. 5, fitting protrusions 36, 38 and fitting recesses 37, 39 are formed on the opposite ends of the upper case 33 and the lower case 34, respectively. 36, 38 and the fitting recesses 37, 39 are adapted to be detachably fitted.

Inside the case 18, a pair of left and right partition walls 40 partitioning the inside into a filtration chamber 19, an inflow passage 27 and an outflow passage 28 are provided, and a holding plate 23 and a receiving plate 24 are provided in the filtration chamber 19. In both of them, a filter plate 20, a granular filter layer 21 and a fiber filter layer 22 are detachably loaded. The pressing plate 23 and the receiving plate 24 are both in a grid shape so that hot water can pass vertically.

The inflow chamber 25 is formed in the upper case 33 above the pressing plate 23, and the outflow chamber 26 is formed in the lower case 34 below the receiving plate 24. Hot water flows from the upper side to the lower side into the outflow chamber 26 via the filter plate 20, the granular filter layer 21 and the fiber filter layer 22 of 19. An inflow passage 27 is formed at one end of the inflow chamber 25, and an outflow passage 28 is formed at the other end of the outflow chamber 26.

An inflow port 29 is provided at the lower end of the inflow passage 27 so as to project downward from the case 18, and a net-shaped hair catcher 41 is detachably fitted to the inflow port 29. The hair catcher 41 is for removing hair in the hot water or large dusts when the hot water in the bathtub 2 is drawn from the inflow port 29.

An outflow port 30 is provided at the upper end of the outflow passage 28 so as to project upward from the case 18, and a flexible soft connecting pipe 42 is connected to the outflow port 30. The connecting pipe 42 is for connecting the filter 14 to the suction pipe 11, and has a permanent magnet 43 attached to the outer periphery at the upper end thereof, and the suction pipe 11 corresponding to the permanent magnet 43. The permanent magnet 44 is also attached to the outer periphery of the lower end. Then, when the upper end of the connecting pipe 42 is fitted to the lower end of the suction pipe 11, both permanent magnets 43, 44 are attracted and held in the connected state.

The rear wall 32 of the case 18 is provided with a suction plate 45 for detachably fixing the filter 14 to the side wall 2 a of the bathtub 2. There are two suction plates 45 on the left and right sides corresponding to the side walls 2a with the corner of the bathtub 2 interposed therebetween, and the suction plates 45 are respectively sucked on the side walls 2a. An air vent valve 47 is provided on the rear side of the upper wall 46 of the upper case 18. The air vent valve 47 is composed of a small hole-shaped valve hole 48 formed in the upper wall 46 and a soft valve plate 49 having one end fixed to the upper wall 46 so as to open and close the valve hole 48 from the upper side. ing. The filter plate 20 is formed by stacking two sponge-like urethane foam plates on top and bottom, and removes hair, dust, and the like that have passed through the hair catcher 41.

The granular filtration layer 21 is formed by filling a large number of granular filtration materials 51 inside a container 50 having water permeability and flexibility. The filter material 51 is a far-infrared emissive ceramic that is made by mixing boiled stone, natural zeolite, alumina, sand, etc. in powder form and mixing them into a spherical shape of about 3 to 5 mm to form a porous material. When hot water passes through the granular filtration layer 21, it slowly decomposes and decomposes and removes fine dust, organic substances, odors, etc. in the hot water, and elutes minerals. It makes the hot water weakly alkaline.

The container 50 is a bag made of a chemical fiber net having a mesh of about 1 to 2 mm, and a fastener is provided at the opening thereof so that the filter medium 51 can be taken in and out. The fiber filtration layer 22 is for suppressing the generation of runners in the particulate filtration layer 21, and at the same time, for finally removing fine dust, organic matter, and the like that have passed through the particulate filtration layer 21. As shown in FIG. 4, the fibrous filtration layer 22 is formed by randomly packing long and slender long fibers 53 in a storage container 52 having water permeability and flexibility so that the directions are not aligned. It is arranged below the granular filtration layer 21 in the filtration chamber 19 so that the load of the filtration layer 21 is directly applied.

The long fibers 53 are made of thin and long chemical fibers having a low specific gravity, hydrophobicity, and elasticity. As this chemical fiber, for example, polypropylene fiber having the lowest specific gravity, excellent hydrophobicity, stretchability, abrasion resistance, chemical resistance, acid / alkali resistance, corrosion resistance, and mold resistance is suitable. . The long fiber 53 has a thickness of about 0.1 μm to 100 μm and is formed in a crimped state so as to be bulky when assembled. Then, the fiber filtration layer 22 constitutes a non-twisted string 54 by bundling a large number of long fibers 53, for example, several tens to several hundreds of long fibers 53 into a string shape without twisting, and the untwisted string 54 is After being wound in a fold shape for a predetermined length, the untwisted string 54 is randomly loosened and packed so that the directions of the untwisted string 54 are not aligned.

Like the container 50, the container 52 has a bag made of a chemical fiber net, so that the long fibers 53 can be put in and taken out by a fastener. Next, the usage state of this circulating hot water purifier will be described. The case body 1 containing the heater 6 and the circulation pump 7 is fixed on the corner of the bath 2 by a fixing means. Then, the connecting pipe 42 is connected to the lower end of the suction pipe 11 by the permanent magnets 43 and 44, the filter 14 is positioned at the corner of the bath 2 and fixed to the side wall 2a of the bath 2 by the suction plate 45. In addition, the bath 22 is filled with hot water to such a level that the lower ends of the filter 14 and the discharge pipe 12 are sufficiently immersed.

Next, after pouring hot water between the check valve 13 and the circulation pump 7 and then pressing the start / stop button, the circulation pump 7 is activated, and the suction pipe 11 is supplied via the filter 14 to the suction pipe 11. Hot water in the bathtub 22 is sucked and pumped up. On the filter 14 side, the hot water enters the inflow chamber 25 through the inflow port 29 and the inflow passage 27, and in this inflow chamber 25, the hot water spreads to an area approximately the same as the filtration area, and the filtration plate 20 and the granular filtration layer in the filtration chamber 19 are provided. It passes through 21 and the fiber filtration layer 22 and flows to the lower outflow chamber 26. Then, when the hot water passes through the filtration plate 20, the granular filtration layer 21, and the fiber filtration layer 22, by the slow filtration by the filtration plate 20, the granular filtration layer 21, and the fiber filtration layer 22, dust in the hot water, Organic matter is decomposed and absorbed, resulting in clean hot water.

The water that has passed through the filtration chamber 19 is pumped from the outflow chamber 26 through the outflow passage 2828 and the outflow port 30 to the case body 1 side through the suction pipe 11, and the heater 6, the circulation pump 7, and the discharge pipe 12 After that, it is discharged again into the hot water in bathtub 2. The heater 6 heats the hot water when the hot water temperature in the bathtub 22 is lower than the set temperature. Then, by circulating hot water between the bathtub 2 and the case body 1 side through the filter 14, the temperature of the hot water in the bathtub 2 is controlled to be constant and dust, organic matter, etc. in the hot water are removed. Filter and purify, and always keep the hot water clean and free of turbidity. .

When hot water is filtered in the filter 14, first, the filter plate 20 removes relatively large dust or the like from the dust and the like that has passed through the hair catcher 41. Then, when the hot water passes through the granular filtration layer 21 and the fiber filtration layer 22, it decomposes and absorbs fine dust, organic substances, etc. that cause dirt and turbidity of the hot water, as well as odor, ammonia, iron, etc. by slow filtration. And remove.

That is, a gelatinous coating is formed on the surface of the filter material 51 of the granular filtration layer 21, and microorganisms such as Bacteria propagate on this gelatinous coating to secrete agar. Then, while the hot water passes through the granular filtration layer 21 from top to bottom at a slow speed, its sieving action, precipitation action, adsorption action, and biological action cause fine dust that causes dirt and turbidity of the hot water. In addition to removing organic substances, etc., it also removes odors, ammonia, iron, etc. to purify it into clean water. At this time, since the filtering material 51 is granular in the granular filtration layer 21 and there is a gap between the respective filtering media 51, if the granular filtration layer 21 is the only one, a runner in which hot water easily flows is generated. To do.

However, on the lower side of the granular filtration layer 21, there is a fiber filtration layer 22 in which crimped elongated long fibers 53 are randomly gathered and packed so that the directions thereof are not aligned, and there is a space between the long fibers 53. Since the gap is extremely smaller than that on the granular filtration layer 21 side, this fiber filtration layer 22 causes the flow of the hot water to be substantially evenly distributed over the whole. Therefore, in the granular filtration layer 21 on the upper side of the fiber filtration layer 22, local runners are less likely to be generated, and thus the destruction of the gelatinous coating in the runner portion and the consequent reduction of microorganisms such as bacteria are prevented. It can be stopped and the filtration capacity by slow filtration is significantly improved.

Further, in the fiber filtration layer 22, since the gap between the long fibers 53 is extremely small, when the hot water after filtration in the granular filtration layer 21 passes through the fiber filtration layer 22, the fiber filtration layer 22 has a Fine dust can be reliably captured and filtered. Therefore, even if the turbidity of the hot water in the bathtub 2 becomes extremely large temporarily, the dirt and turbidity can be reliably filtered and removed by the fiber filtration layer 22, so that the hot water in the bathtub 2 becomes dirty. The turbidity does not suppress the growth of microorganisms in the granular filtration layer 21 or kill the microorganisms, and it is possible to always maintain a high filtration efficiency.

Of course, also in the fiber filtration layer 22, the hot water passes through the gaps between the shrunk long fibers 53, so that the surface of the long fibers 53 has a colloidal coating like the surface of the filtration material 51 of the granular filtration layer 21. As a result, the microorganisms propagate and the filtration action by slow filtration can be obtained. Moreover, since the fiber filtration layer 22 is below the granular filtration layer 21 and the fiber filtration layer 22 is appropriately compressed by the load of the granular filtration layer 21, the density of the long fibers 53 becomes high, and The gap can be made extremely small. Therefore, it is not necessary to pack the long fibers 53 in the storage body 52 at a high density, and the thickness of the fiber filtration layer 22 itself can be reduced.

Therefore, it is possible to reduce the size of the filter 14 in combination with the fact that the filtration capacity is improved by using the granular filtration layer 21 and the fiber filtration layer 22 together. When cleaning the granular filtration layer 21 and the fiber filtration layer 22, the connecting pipe 42 is separated from the suction pipe 11 in the hot water of the bath 2 and the filter 14 is taken out. At this time, since the connection pipe 42 and the suction pipe 11 are held in the connected state by the permanent magnets 43 and 44, the connection pipe 42 can be easily separated from the suction pipe 11. Further, since the filter 14 is fixed to the side wall 2a of the bath 2 via the suction plate 45, it can be easily removed by only releasing the suction.

After the filter 14 is taken out of the hot water of the bathtub 2, the case 18 is divided into an upper case 33 and a lower case 34, and the filter chamber 19 of the lower case 34 to the filter plate 20 and the granular filter layer 21 are divided. And the fiber filtration layer 22 is taken out and washed. In this case, since the granular filtration layer 21 and the fiber filtration layer 22 are filled with the filtration material 51 and the long fibers 53 inside the container having water permeability and flexibility, the granular filtration layer 21 and the fiber filtration layer 22 can be easily washed by a washing machine or the like as they are. Can be washed. Further, since the long fibers 53 are originally randomly packed in the storage body 52 so that the directions are not aligned, even if the long fibers 53 are agitated by a washing machine or the like, no particular problem occurs.

The fiber filtration layer 22 is compressed by the load of the granular filtration layer 21 to increase the density in use, and it is not necessary to pack a large amount of long fibers 53 in the container 52 at a high density. Therefore, fine dust and the like attached to the surface of each long fiber 53 can be easily peeled off, and cleaning can be performed very easily.

When the cleaning of the granular filtration layer 21 and the fiber filtration layer 22 is completed, the filtration plate 20, the granular filtration layer 21 and the fiber filtration layer 22 are loaded into the filtration chamber 19 of the lower case 34, and then the lower case 34 is loaded. Fit the upper case 33. When the filter 14 is put into the hot water of the bathtub 2, the air in the case 18 escapes from the air vent valve 47.After this air is completely vented, the connecting pipe 42 is attracted by the permanent magnets 43, 44, etc. While being connected to the lower end of the pipe 11, the suction plate 45 is adsorbed to the side wall 2a of the bath 2 to fix the filter 14 to the side wall 2a of the bath 2.

According to this embodiment, since the case body 1 side having the heater 6 and the circulation pump 7 and the filter 14 are divided into two parts, each can be downsized. In addition, in the use condition, the filter 14 is filled with hot water, but this filter 14 is separated from the case body 1 and is in the hot water of the bathtub 2, and the case body 1 installed outside the bathtub 2 is Since only the heater 6 and the circulation pump 7 are included, the weight of the case body 1 side is extremely light, so there is no need to do any special work at the time of installation, and the construction is very easy.

Moreover, since the filter 14 is located in the hot water of the bathtub 2 and is constantly subjected to the buoyancy force of the hot water, its weight does not pose a particular problem and can be fixed in the bathtub 2 by a simple fixing means. . In particular, if the suction plate 45 is used, the filter 14 can be easily attached to and detached from the side wall 2a of the bathtub 2, and the filter 14 may move unstably due to the waviness of the bath surface at the time of bathing. It does not come off unexpectedly. Further, since the filter 14 is located at the corner of the bathtub 2, the filter 14 does not interfere with the bathing even though it is arranged inside the bathtub 2.

Although the case body 1 is fixed to the corner of the bathtub 2 in the above-described embodiment, it is mounted on the flat portion 56 between the bathtub 2 and the wall surface 55 as shown in FIG. You can leave it. Further, as shown in FIG. 7, a hook 57 may be provided on the case main body 1, and the hook 57 may be engaged with and disengageably engaged with the metal fitting 58 on the wall surface 55 side. Further, in the above-described embodiment, the heater 6 is provided in the case main body 1, but this heater 6 may be omitted when the hot water in the bathtub 2 is simply purified. Also, the check valve 13 may be omitted.

Further, an inflow port 29 is provided on the bottom wall of the case 18 of the filter 14 and an outflow port 30 is provided on the castle wall of the case 18 so that hot water flows from bottom to top in the case 18 of the filter 14. Is also good. Alternatively, the granular filtration layer 21 and the fiber filtration layer 22 may be arranged side by side so that the hot water flows in the lateral direction through the granular filtration layer 21 and the fiber filtration layer 22. Although the fiber filtration layer 22 is configured by filling the long fibers 53 in the container 52, the long fibers 53 may be filled in the lower portion of the filtration chamber 19 without housing the long fibers 53 in the container 52. Further, short fibers may be used in place of the long fibers 53 as long as they do not come out of the storage body 52. Natural sand or the like may be used for the granular filtration layer 21.

Further, as the long fibers 53, other than polypropylene, chemical fibers such as polyester and nylon, or natural fibers may be used. Furthermore, the long fibers 53 may be used in the form of a twisted string in which many fibers are gently twisted, or may be used as it is without being in a string state.

[0047]

[Effect of device]

 According to the present invention as set forth in claim 1, the circulation pump 6 and the filter 14 are connected in series, the hot water in the bathtub 2 is circulated by the circulation pump 6, and the water is filtered by the filter 14 to be filtered in the bathtub 2. In the circulation type purification device for baths that purifies the hot water of the bath, the circulation pump 7 is placed outside the bathtub 2, and the filter 14 is placed in the hot water of the bathtub 2, respectively. Since it is detachably connected to the side in hot water, the circulation pump 7 side and the filter 14 side can be divided into two parts to reduce the size as a whole, and the installation work can be facilitated and the filtration The container 14 can be easily handled during cleaning.

According to the present invention as set forth in claim 2, in the device as set forth in claim 1, the filter 14 is arranged at a corner of the bathtub 2, and the filter 14 is attached to and detached from the side wall 2 a of the bathtub 2. Since the suction plate 45 that can be fixed freely is provided, the filter 14 does not get in the way when bathing, even though the filter 14 is in the hot water of the bathtub 2, and also when cleaning the filter 14. 14 can be easily attached to and detached from the side wall 2a of the bathtub 2.

Further, according to the present invention as set forth in claim 3, in the device as set forth in claim 1 or 2, the case 18 is provided with the granular filter layer 21 filled with the granular filter material 51 and the fiber 53. Since the fibrous filtration layer 22 filled with random particles is provided above and below, the hot water flows substantially evenly throughout the granular filtration layer 21 to improve the filtration efficiency in the granular filtration layer 21 and also to improve the granular filtration layer 21. Both the overlayer 21 and the fiber filtration layer 22 can slowly filter hot water, and the fiber filtration layer 22 can reliably filter fine dust, etc., so that the filtration efficiency is remarkably improved as compared with the conventional one. To do.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a circulating hot water purifying apparatus for a bath according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an attached state of a filter showing an embodiment of the present invention.

FIG. 3 is a plan view of a filter according to an embodiment of the present invention in a mounted state.

FIG. 4 is a sectional view of a filter according to an embodiment of the present invention.

FIG. 5 is an exploded perspective view of a filter according to an embodiment of the present invention.

FIG. 6 is a sectional view of a circulating hot water purifying apparatus for a bath according to another embodiment of the present invention in an attached state.

FIG. 7 is a sectional view of a circulating hot water purifying apparatus for a bath in a mounted state showing still another embodiment of the present invention.

FIG. 8 is a schematic explanatory diagram of a conventional circulating hot water purifying apparatus.

[Explanation of symbols]

 1 Case body 2 Bath 7 Circulation pump 14 Filter 18 Case 21 Granular filtration layer 22 Fiber filtration layer 45 Adsorption plate 51 Filtration material 53 Long fiber

Claims (3)

[Scope of utility model registration request] 1. A circulation pump (6) and a filter (14) are connected in series, and hot water in a bath (2) is circulated by the circulation pump (6) and filtered by the filter (14). In a circulation type purification device for a bath that purifies the hot water in the bathtub (2), the circulation pump (7) is placed outside the bathtub (2) and the filter (14) is placed in the bathtub (2).
A circulation type purification device for a bath, characterized in that the filters (14) are respectively placed in the hot water and the filter (14) is detachably connected to the circulation pump (7) side in the hot water. 2. A filter (14) is placed at the corner of the bath (2),
The circulating purifying apparatus for a bath according to claim 1, further comprising an adsorption plate (45) for detachably fixing the filter (14) to a side wall (2a) of the bath (2). 3. A granular filter layer (21) filled with a granular filter material (51) and a fiber filter layer (22) randomly filled with fibers (53) in a case (18) of a filter (14). ) And (2) are provided above and below, respectively, The circulating purification apparatus for bath according to claim 1 or 2.