JPH0857221A - Circulation type purifier for bath - Google Patents

Abstract

PURPOSE: To provide a circulation type purifier for a bath in which the compression of a fiber filter layer by a particle filter layer can be prevented and the filtration capacities of both filter layers can be demonstrated and kept efficiently. CONSTITUTION: A circulating pump 2 is placed above a bathtub 1, at the lower end of a suction pipe 17 which communicates with the circulating pump 2 is connected freely attachably/detachably a filter 5 which is arranged in water in the bathtub 1, and water in the bathtub 1 is filtered by filter layers 75, 76 in the filter 5 while water in the bathtub 1 being circulated by the circulating pump 2 through the filter 5, the suction pipe 17, the circulating pump 2, and a discharge pipe 18. The fiber filter layer 75 is placed on the upper side in the filter case 69 of the filter 5, while the particle filter layer 76 are placed on the lower side, respectively. An outflow chamber which covers almost the whole filtration area of the fiber filter layer 75 is installed on the upper side of the layer 75, and an inflow chamber which covers almost the whole filtration area of the particle filter layer 76 is installed on the lower side of the layer 76, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating purifying apparatus for bath.

[0002]

2. Description of the Related Art In a circulation type purifying apparatus for a bath, a case for accommodating a circulation pump is arranged on a bathtub and a lower side of the case is arranged, as described in Japanese Utility Model Laid-Open No. 3-127156. A suction pipe and a discharge pipe are provided, and a filter placed in the water of the bathtub is detachably connected to the lower end of the suction pipe, and the water in the bathtub is filtered by the circulation pump, the suction pipe, the circulation pump and the discharge pipe. There is a so-called underwater filtration system in which the water in the bathtub is purified by filtering the water in the bathtub with the filtration layer in the filter while circulating it through the bath.

[0003]

As a filter used in the circulating purification apparatus of the submersible filtration system, it is known that a plurality of different types of granular filtration layers are provided in upper and lower stages.
It is considered to use this granular filtration layer in combination with a fiber filtration layer in which long fibers are randomly gathered. By using this fiber filtration layer, there is no generation of water like the granular filtration layer,
There is an advantage that the filtration efficiency is improved.

However, when the fiber filtration layer is provided on the lower side of the granular filtration layer, the weight of the granular filtration layer is gradually added to the fiber filtration layer during the operation for a long period of time. Is compressed, the density of the fiber filtration layer becomes very large, which may increase the suction resistance of the circulation pump. In view of such conventional problems, the present invention can prevent the compression of the fiber filtration layer by the granular filtration layer, and can efficiently exhibit and maintain the filtering ability of the granular filtration layer and the fiber filtration layer, and a circulation type for a bath. The purpose is to provide a purification device.

[0005]

According to the present invention as set forth in claim 1, the circulation pump 2 is arranged on the bathtub 1, and at the lower end of the suction pipe 17 communicating with this circulation pump 2, the water in the bathtub 1 is submerged. Circulating pump 2 by connecting the placed filter 5 detachably
The bath in which the water in the bathtub 1 is filtered by the filtration layers 75 and 76 in the filter 5 while the water in the bathtub 1 is circulated through the filter 5, the suction pipe 17, the circulation pump 2 and the discharge pipe 18. Filter case of filter 5
A fiber filtration layer 75 is provided on the upper side of 69, and a granular filtration layer 76 is provided on the lower side thereof.On the upper side of the fiber filtration layer 75, the outflow chamber 70 over substantially the entire filtration area of the fiber filtration layer 75 is provided, and the granular filtration layer 76 is provided. On the lower side of the inflow chamber 71 over the substantially entire filtration area of the granular filtration layer 76.
Are provided respectively.

According to a second aspect of the present invention, in the invention according to the first aspect, the upper side of the fiber filtration layer 75 and the granular filtration layer are provided.
Under the 76 and between the two filtration layers 75,76, respectively, the cages 72,73,
74 is provided, and the flow prevention part is provided in the central part of each of the children 72, 73, 74 of each cage.
84 is provided.

According to a third aspect of the present invention, in the invention according to the first or second aspect, the upper cage 72 has a fiber filtration layer 75 side, and the lower and middle cages 73, 74 have a granular filter. layer
Protrusions 87 are provided on the side of 76 for maintaining a gap, respectively.

The present invention according to claim 4 provides the invention according to claims 1 and 2.
Alternatively, in the invention described in item 3, the filter case 69 has an upper case 78 that is detachably connected to the suction pipe 17 at the upper side and has an opening at the lower side, and a lower lid that is removably fitted to the lower end of the upper case 78. 79 and a fiber filter layer 75 in the upper case 78.
And a granular filtration layer 76.

[0009]

According to the present invention as set forth in claim 1, in the filter case 69 of the filter 5, the fiber filter layer 75 is provided on the upper side and the granular filter layer is provided on the lower side.
At the time of filtration, the water in the bathtub 1 enters the lower inflow chamber 71 of the filtration case 69 and flows from this inflow chamber 71 to the upper outflow chamber 70 through the granular filtration layer 76 and the fiber filtration layer 75. Therefore, the fiber filtration layer 75 is not compressed by the weight of the granular filtration layer 76, and the filtration capacity of the fiber filtration layer 75 can be maintained for a long period of time. Further, since the outflow chamber 70 and the inflow chamber 71 respectively cover substantially the entire filtration area of the fiber filtration layer 75 and the granular filtration layer 76, the filtration capabilities of the fiber filtration layer 75 and the granular filtration layer 76 can be efficiently exhibited and maintained. .

In the present invention according to claim 2, the fiber filtration layer
There are cages 72, 73, 74 on the upper side of 75, on the lower side of the granular filtration layer 76, and between both filtration layers 75, 76, respectively.
Since the flow-blocking portion 84 is provided in the central portion of 74, the water passing through the fiber filtration layer 75 and the granular filtration layer 76 is kept in the respective cages 72, 73, 74.
It can be diffused to the outside by the flow blocking portion 84 of the fiber filtration layer 75.
Also, water does not flow intensively to the central side of the granular filtration layer 76.

According to the present invention as set forth in claim 3, the protrusions 87 of the upper cage member 72 project toward the fiber filtration layer 75 side, and the protrusions 87 of the lower and middle cage children 73 and 74 project toward the granular filtration layer 76 side, respectively. The protrusions 87 maintain a predetermined distance between the cages 72, 73, 74 and the filtration layers 75, 76 of each cage, so that each filtration layer
Water flows over the entire area of 75,76 and prevents reduction of filtration area.

According to the present invention as set forth in claim 4, an upper case 78 whose upper side is detachably connected to the suction pipe 17 and whose lower side is open, and a lower case which is removably fitted to the lower end of the upper case 78. Since the filtration case 69 is provided with the lid 79 and the fiber filtration layer 75 and the granular filtration layer 76 are provided in the upper case 78, even if the filtration case 69 shakes together with the suction pipe 17 in the bathtub 1. It becomes difficult for the lower lid 79 to come off, and even if water enters from the fitting portion between the upper case 78 and the lower lid 79, it can be filtered by the filter layers 75, 76 in the upper case 78.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 11 illustrate a first embodiment of the present invention. In FIG. 1, 1 is a bathtub, 2 is a circulation pump, 3 is a case for storing the circulation pump 2, etc., and as shown in FIG.
It is mounted on the corner of bath 1 via mounting base 4. 5 is a filter, which is placed in the water up to the corner of bath 1.

The case 3 is, as shown in FIGS. 2 to 4,
A case body 6 having a substantially fan-shaped plan view, a bottom plate 7 attached to the lower end of the case body 6, a concave insole 8 fitted on the top of the case body 6, and a case Body 6
The upper lid 9 is detachably attached to the upper end of the.

A cylindrical suction pipe connecting portion 10 and a discharge pipe connecting portion 11 are integrally formed on the bottom plate 7 so as to project to the left and right in the center of the front portion and to both upper and lower sides. A cylindrical air pipe connecting portion 12 and a drain pipe connecting portion 14 are provided between the front and rear sides of the discharge pipe connecting portion 11 and the discharge pipe connecting portion 11, and a cylindrical air pipe connecting portion is provided at the rear end portion.
13 are formed integrally with each other. Air tube connection 12 is the bottom plate
7, and the air pipe connecting portion 13 and the drain pipe connecting portion 14 project above the bottom plate 7.

A solenoid valve 15 is provided on the way to the air pipe connecting portions 12 and 13.
Both ends of the air suction pipe 16 having the are connected. solenoid valve
15 is fixed on the bottom plate 7. Bottom plate 7 suction tube connection
A suction pipe 17 is connected to 10 and a discharge pipe 18 is detachably connected to the discharge pipe connecting portion 11 from below. The suction pipe 17 and the discharge pipe 18 are made of a flexible material such as urethane rubber, and these extend downward from the bottom plate 7 of the case body 6, and the lower ends thereof are immersed in the water of the bathtub 1. There is.

The circulation pump 2 includes a bottom plate 7 inside the case body 6.
The pump inlet 19 is fixed to the upper side, the pump inlet 19 is provided on the upper surface side, and the pump outlet 20 is provided on the upper side surface.The pump inlet 19 is connected to the suction pipe connecting portion 10 via the suction side flow passage 21 and the pump outlet 20.
Are connected to the discharge pipe connecting portion 11 via the discharge-side channels 22, respectively.

The suction side flow passage 21 has a heater holding cylinder 24 whose inlet side is connected to the suction pipe connecting portion 10 via a connection hose 23.
And an inverted U-shaped or U-shaped connecting pipe 27 interposed between the outlet side of the heater holding cylinder 24 and the pump inlet 19 side of the circulation pump 2 via connecting hoses 25 and 26. The connection pipe 27 is arranged at the highest position on the suction side flow path 21 side. The heater holding cylinder 24 is provided with a heater 28 for heating and keeping the water pumped from the bathtub 1 by the circulation pump 2, and a thermistor for measuring the temperature of the water.
29 and a thermostat 30 for controlling the water temperature are provided.

The discharge side flow path 22 has a lower end connected to the pump outlet 20 side of the circulation pump 2 via a connection hose 31 and a lower end connected to a discharge pipe connection part via a connection hose 33.
11, a falling pipe 34 connected to the rising pipe 32, and an inverted U-shape or a U-shape connected between the upper ends of the rising pipe 32 and the falling pipe 34 via connecting hoses 35, 36. And a connecting pipe 37 in the shape of a circle.

The connecting pipe 37 of the discharge side flow path 22 is
When supplying the priming water to the circulation pump 2, a part of it is higher than the uppermost portion of the suction side flow passage 21, that is, the suction side flow, so that the circulation pump 2 and the suction side flow passage 21 can be filled with the priming water. It is arranged at a position higher than the connecting pipe 21 of the passage 21. The falling pipe 34 is provided with a pressure switch 38 so as to detect the pressure of the water flowing therein.

As shown in FIGS. 2 and 3, the insole 8 has
A water supply pipe connecting portion 39 and a drain pipe connecting portion 40 projecting vertically upside down from the bottom portion are integrally formed in the front and rear of the left and right central portion. An upper water supply pipe 41 is removably inserted into the water supply pipe connecting portion 39 from the upper side, and a flexible lower water supply pipe 42 is connected to a lower end of the upper water supply pipe 41. The lower end of the lower water supply pipe 42 is connected to the upper and lower water supply pipe connecting portions 39 and the water supply pipe connecting portion 43 integrally formed on the upper side of the connecting pipe 27 so as to face the pump inlet 19.

The upper water supply pipe 41 has an opening / closing valve 44 on the side of the protruding portion that protrudes above the insole 8. The on-off valve 44 is, as shown in FIG. 5, a valve body 45 formed integrally with the upper water supply pipe 41.
And a valve body 46 rotatably mounted in the valve body 45 about the horizontal axis, and a knob portion 47 for rotating the valve body 46 about the horizontal axis for opening and closing. Has been done. Disc
Reference numeral 46 is a tubular shape, and an opening 48 having substantially the same diameter as the inside of the upper water supply pipe 41 is formed in the valve body 46. The knob 47 has a top cover 9
Once the is removed, it can be easily operated from the upper side of the insole 8 in that state.

As shown in FIG. 5, a water supply funnel 49 can be removably attached to the upper water supply pipe 41, as shown in FIG.
When the priming water is supplied to the circulation pump 2 etc., the lower side of the funnel 49 is inserted into the upper water supply pipe 41 to supply water. A thin injection pipe 51 is connected to the funnel 49 via a flexible connecting hose 50. The injection pipe 51 is connected to the lower part of the opening 48 of the opening / closing valve 44 when the funnel 49 is attached to the upper end of the upper water supply pipe 41. The length is such that it reaches the inside of the connection pipe 27 of the suction side flow passage 21 through the water supply pipe 42.

Drain pipe connection part 40 of the insole 8 and case body 6
A drain pipe 52 for discharging the water overflowing on the insole 8 into the bath 1 is connected between the bottom plate 7 and the drain pipe connecting portion 14. The drain pipe 52 is a thin hose having flexibility, and the funnel 49 after use can be inserted into the drain pipe 52 from the insole 8 side. The funnel 49 after use is housed between the insole 8 and the upper lid 9 while being inserted into the drain pipe 52.

At the lower end of the discharge pipe 18, filtered water sent from the circulation pump 2 through the discharge side flow path 22 and the discharge pipe 18 is tubed.
An injection nozzle 53 for injecting into 1 is connected. The injection nozzle 53 is arranged near the upper side of the filter 55, as shown in FIGS. 6 to 8. The injection nozzle 53 is shown in FIGS.
As shown in FIG. 4, an L-shaped nozzle main body 54 and an orifice provided in the nozzle main body 54 corresponding to the nozzle opening.
56 and an air supply path 57 that opens to the nozzle opening 55 side of the orifice 56.

The air supply passage 57 is integrally formed in an L shape from the lower side of the nozzle body 54 along the rear side, and is connected to the air pipe 58 on the rear side of the nozzle body 54. The air pipe 58 is connected to the air pipe connecting portion 12 of the bottom plate 7, and when the solenoid valve 15 is opened, the discharge force of the water jetted from the jet nozzle 53 causes the bottom plate 7 to move.
Air sucked from the lower side of the rear end of the air intake pipe 16, air pipe
It is configured to be sent from the air supply path 57 to the nozzle port 55 side via 58 and discharged from the nozzle port 55 into the bathtub 1 together with water.

A filter 5 is detachably connected to the lower end of the suction pipe 17 via a check valve 59, as shown in FIGS. The check valve 59 is composed of an upper valve body 60 and a lower valve body 61 that are vertically fitted and bonded together, and a valve body 63 provided on a receiving portion 62 of the lower valve body 61. The upper side of the upper valve body 60 and the lower side of the lower valve body 61 are fitting recesses 64 and 65 of annular grooves, respectively.
Is formed, and the lower end of the suction pipe 17 is fitted and adhered to the fitting recess 64 on the upper side thereof.

The valve body 63, as shown in FIG. 10, is a lower valve body.
An annular portion 66 sandwiched between the receiving portion 62 of 61 and the lower end of the upper valve body 60, and an annular portion 66 via a vertically bendable connecting portion 67.
A valve lid portion 68 that is integrally formed in the inside and is freely contactable and separable on the upper surface of the receiving portion 62 is provided, and is made of a soft synthetic resin material such as urethane. In addition, the valve lid portion 68 is flat on the lower side and bulged on the upper side so as to maximize the thickness of the central portion.

The filter 5 is, as shown in FIGS.
The filter 5, which is arranged in the corner of the bath 1 below the case body 6 that houses the circulation pump 2 and is detachably connected to the check valve 59 at the lower end of the suction pipe 17 in water, is An outflow chamber 70 and an inflow chamber 71 are provided above and below in a hollow filtration case 69, and a fiber filtration layer is provided between the outflow chamber 70 and the inflow chamber 71 via three cages 72, 73, 74. 75 and a granular filtration layer 76 are removably loaded on top and bottom.

The filtration case 69 is composed of a hollow upper case 78 having an upper bottom 77 and a lower lid 79 detachably fitted to the lower end opening side of the upper case 78. The upper case 78 has a rear wall 78a which is curved in an arc along the inner wall 1a at the corner of the bathtub 1, and the upper case 77 side end of the upper case 78 and the lower lid 79 have a pair of left and right locking portions. 80, 81 are formed so as to project inward, and the upper and lower cages 72, 74 are detachably locked inside the upper case 78 and the lower lid 79 by the pair of locking portions 80, 81.

A cylindrical filter outlet 82 is integrally formed on the upper bottom 77 at a position offset to the left and right from the center, and the filter outlet 82 is covered with a soft sealing material 83 such as urethane on the outer periphery. The fitting recess of the check valve 59 is fitted through the sealing material 83.
It is detachably fitted to 65 from below.

As shown in FIG. 11, the children 72, 73, 74 of the respective cages have a central flow-preventing portion 84, a lattice portion 86 with a large number of through holes 85 formed around the flow-preventing portion 84, It is provided with a large number of protrusions 87 for maintaining a gap formed on one side surface. The upper cage child 72 is locked to the upper end of the upper case 78 with the projection 87 facing downward so that the outflow chamber 70 is formed between the upper cage 77 and the upper bottom 77, and the intermediate cage child 73 is , The fibrous filtration layer 75 and the granular filtration layer 76 with the protrusions 87 facing downward.
, And the lower cage 74 is locked in the lower lid 79 with the protrusion 87 facing upward so that the inflow chamber 71 is formed on the lower side.

A filter inlet 88 opening downward is formed at the center of the lower end of the lower lid 79, and a hair catcher 89 is detachably attached to the filter inlet 88. The hair catcher 89 is for removing hair in the water, large dust, etc. at the filtration inlet 88.

The granular filter layer 76 is formed by filling a large number of granular filter materials 91 inside a storage bag 90 having water permeability and flexibility. The filter material 91 is a far-infrared radiant ceramic ball formed by mixing barley stone, natural zeolite, alumina, sand, etc. in the form of powder and sintering it into a spherical shape of about 3 to 5 mm to form a porous material. Etc. are used, and when water passes through the granular filtration layer 76, it decomposes and absorbs fine dust, organic substances, odors, etc. in the water, and at the same time elutes minerals to make the water weakly alkaline. It is like this.

The fiber filter layer 75 is for finally removing and filtering fine dusts, organic substances, etc. that have passed through the granular filter layer 76, and inside the storage bag 93 having water permeability and flexibility,
The elongated long fibers 92 are randomly packed and packed so that the directions are not aligned.

The long fibers 92 are made of thin chemical fibers having a low specific gravity, hydrophobicity, and elasticity. As this chemical fiber, for example, the specific gravity is the lightest, hydrophobic,
A polypropylene fiber having excellent elasticity, abrasion resistance, chemical resistance, acid / alkali resistance, corrosion resistance, and mold resistance is suitable.

The long fibers 92 are formed in a crimped state so as to be bulky when they are put together. The fiber filtration layer 75 has many long fibers 9
2.For example, dozens or hundreds of long fibers 92 are not twisted to be bundled in a string shape to form a non-twisted string, and the untwisted string is wound into a ridge shape for a predetermined length, and then a non-twisted string Are packed in the storage bag 93 in a state in which they are randomly loosened and bundled so that the directions thereof are not aligned.

As shown in FIGS. 6 and 8, a pair of left and right recesses 94 are formed on the rear side of the lower lid 79, and suction protrusions 95 are fixed to the recesses 94 from one side by screws 96. Each suction protrusion 95 has a spherical suction portion 97 formed at the tip. On the other hand, the inner walls 1a on both sides of the corner of the bathtub 1 are
A suction cup 100 having a large-diameter suction cup 98 and a small-diameter suction recess 99 that are detachably attached to 1a is provided. Is fitted and absorbed.

Next, the usage state of this circulating hot water purifier will be described. The case body 6 containing the heater 28, the circulation pump 2 and the like is attached to the bathtub 1 via the mounting base 4.
Secure it on the corner of. Then, the suction pipe 17 and the discharge pipe 18 are connected to the lower side of the case body 6, and the suction pipe 17 and the discharge pipe 18 are connected.
18 and 18 are located at the corners of the bathtub 1, and at the lower end of the suction pipe 17, the check valve 59 is fitted into the fitting recesses 64, 65 and the filter outlet 82 of the filter 5 is inserted.
After fitting the filter, attach the filter 5 to the suction protrusion 95 and suction plate 10.
It is fixed to the inner wall 1a of the bathtub 1 via 0.

When the operation is started, first, water is poured into the bath 1 to a level at which the check valve 59 at the lower end of the filter 5 and the discharge pipe 18 is sufficiently immersed. At this time, if the open / close valve 44 is placed in the open state, the air in the filter case 69 of the filter 5 will flow from the filter outlet 82 side to the valve body 63 of the check valve 59, the suction pipe 17, the suction side flow passage 21. , The water supply pipe, and the on-off valve 44 to exit, so bathtub 1
As the level of water inside rises, water flows into the filter case 69 from the filter inlet 88, and the filter 5 is filled with water.

Next, priming water is supplied into the circulation pump 2. For this water supply, first, the upper lid 9 of the case body 6 is opened, and the funnel 49 stored in the drain pipe 52 and stored on the insole 8 is taken out. Then, after opening the on-off valve 44, the injection pipe 51 of the funnel 49 is connected to the upper water supply pipe as shown in FIG.
From the upper end side of 41 to the uppermost side of the connecting pipe 27 through the opening 48 of the opening / closing valve 44 and the lower water supply pipe 42. Then, water is put on the funnel 49 to fill the circulation pump 2 and the suction side flow passage 21 from the lower end of the injection pipe 51 with priming water.

At this time, the water in the funnel 49 directly enters the connection pipe 27 of the suction side flow passage 21 through the injection pipe 51 and flows into the circulation pump 2 side. Since a part of the connection pipe 37 of the discharge side flow passage 22 is located at the uppermost position or more of the connection pipe 27 of the suction side flow passage 21, the water that has entered the circulation pump 2 side rises in the discharge side flow passage 22. tube
It flows into the bathtub 1 through the discharge side flow path 22 only into the bathtub 1
It does not flow out, but accumulates in circulation pump 2.

On the other hand, since the water supply pipe connecting portion 43 is located at the uppermost portion of the connecting pipe 27, the air in the circulation pump 2 and the suction side flow passage 21 is
It passes through the lower water supply pipe 42, the on-off valve 44, and the upper water supply pipe 41 to escape upward. In addition, the water supplied from the funnel 49 is
When it flows downward from 51, it spreads to the periphery at the lower end of the injection pipe 51, but since the lower end of the injection pipe 51 is projecting into the connecting pipe of the suction side flow path 21, the lower water supply pipe is supplied by the water from the injection pipe 51. The 42 is never sealed. Therefore, the air in the circulation pump 2 and the suction-side flow passage 21 quickly escapes to the outside through the gaps between the water supply pipes 41, 42 and the injection pipe 51, and easily flows into the circulation pump 2 by the funnel 49. In addition, the priming water can be reliably supplied.

When the circulating pump 2 is filled with water, the connecting pipe 27
After that, the water flows into the heater holding cylinder 24 and the suction pipe 17 side, and the heater holding cylinder 24 and the suction pipe 17 are also filled with water. At this time, the valve body 63 of the check valve 59 descends and comes into contact with the receiving portion 62, and the check valve 59
Is closed, so the water supplied by the funnel 49 is the suction pipe.
17. It does not flow out into the bath 1 through the filter 5.

The water overflowing from the funnel 49 at the time of water supply is received by the insole 8 and then flows from the insole 8 through the drain pipe 52 into the bath 1 from the bottom plate 7 side of the case body 6. For this reason, it is not necessary to carefully pour water into the funnel 49 so that the water does not overflow from the funnel 49, and it is easy to supply the priming water. There is no downward flow.

When the circulation pump 2 and the suction side flow passage 21 are filled with priming water, the funnel 49 is pulled out upward from the upper water supply pipe 41, and then the knob portion 47 is operated to close the on-off valve 44 to close the circulation pump.
Seal the inlet side of 2. Since the on-off valve 44 is provided on the upper water supply pipe 41 protruding upward from the insole 8, the knob portion 47 of the on-off valve 44 is provided as compared with the case where the on-off valve 44 is provided below the insole 8. The opening / closing operation can be easily performed, and the structures of the insole 8, the opening / closing valve 44, and the like can be simplified.

The funnel 49 after use is removed from the upper water supply pipe 41, the injection pipe 51 is inserted into the drain pipe 52, the funnel 49 is placed on the insole 8, and then the case body 6 is covered with the upper lid 9. Put on. That is, it is stored between the insole 8 and the upper lid 9. Therefore, it is easy to store the funnel 49, and the funnel 49 is not lost, and its management is very easy. In particular, the funnel 49 has a long injection pipe 51, but since the injection pipe 51 is inserted into the drain pipe 52 to be stored, a large space is not required to store the funnel 49, and the insole 8 and Top lid 9
The gap between and can be made small and compact.

When the operation switch is turned on after the priming water is supplied to the circulation pump 2 and the suction side flow passage 21, the circulation pump 2
Is activated to pump up the water in the bathtub 1 through the filter 5, the check valve 59, and the suction-side flow passage 21, and at the same time, the circulation pump 2, the discharge-side flow passage 22, and the discharge pipe 18 are used to discharge the water from the injection nozzle 53 to the bathtub 1. Return to the inside and circulate the water in bath 1 one by one.

On the filter 5 side, water enters the inflow chamber 71 of the lower lid 79 through the filtration inlet 88 and the granular filtration layer in the filtration case 69.
It flows toward the filtration outlet 82 side through 76, the fiber filtration layer 75, and the outflow chamber 70. The water that has entered the inflow chamber 71 from the filtration inlet 88 is spread to the outside by the children 72, 73, 74 of the respective cages, and uniformly passes through the entire granular filtration layer 76 and the fiber filtration layer 75 in the filtration case 69. It flows into the upper outflow chamber 70. And the water is granular filter layer 76
And when passing through the fiber filtration layer 75, these granular filtration layers
The filtering action of the 76 and the fiber filtration layer 75 removes or decomposes and removes dust, organic matter, and the like in the water, resulting in clean water.

The water that has passed through the filter 5 is pumped from the filtration outlet 82 to the case body 6 side through the check valve 59 and the suction pipe 17, and is discharged from the heater 28 in the suction side flow passage 21 and the circulation pump 2. It is again discharged into the water in the bathtub 1 from the injection nozzle 53 through the side flow path 22 and the discharge pipe 18. If the heat-retaining switch is turned on during this filtration, the water temperature can be controlled to the set temperature by heating the water with the heater 28 when the water temperature in the bathtub 1 is lower than the set temperature.

When water is filtered by the filter 5, first, hair etc. are removed by the hair catcher 89, and the granular filter layer 76 is used.
Also, when passing through the fiber filtration layer 75, it decomposes and absorbs and removes odor, ammonia, iron and the like as well as water dirt, fine dust that causes turbidity, organic matter and the like.

That is, a gelatinous coating is formed on the surface of the filter material 91 of the granular filtration layer 76, and microorganisms such as bacteria propagate on this gelatinous coating to secrete agar. And the water is a granular filtration layer
While passing from bottom to top through 76, its sieving action, precipitation action,
By adsorbing action and biological action, it removes dirt of water, fine dust that causes turbidity, organic substances, etc., and also removes odor, ammonia, iron, etc. to purify clean water.

On the upper side of the granular filtration layer 76, there is a fibrous filtration layer 75 in which crimped elongated long fibers 92 are randomly gathered and packed so that the directions thereof are not aligned, and the gaps between the long fibers 92 are granular filtered. Since it is extremely small compared to the layer 76 side,
When the filtered water in the granular filtration layer 76 passes through the fiber filtration layer 75, the fiber filtration layer 75 can reliably capture and filter extremely fine dust and the like. Therefore, even if the turbidity of the water in the bath 1 temporarily becomes extremely large, the dirt and turbidity can be reliably filtered and removed by the fiber filtration layer 75.

Of course, even in the fiber filtration layer 75, the curled long fibers 92
Since water passes through the gaps between them, the filter material 91 of the granular filter layer 76 is
Similar to the surface of the above, the surface of the long fiber 92 is provided with a colloidal coating so that microorganisms can propagate and a predetermined filtering effect can be obtained. Moreover, since the granular filtration layer 76, which has a larger specific gravity and is heavier than water, is placed below the filtration case 69, and the fiber filtration layer 75, which has a smaller specific gravity and is lighter than water, is placed above the fiber filtration layer 75, The buoyancy and the suction force of the circulation pump 2 are only pressed against the upper cage 72, and the load of the granular filtration layer 76 is not applied to the fiber filtration layer 75.

Therefore, in this type of device, continuous operation is carried out for a long time, but in this case as well, the fiber filtration layer 75 is compressed by the load of the granular filtration layer 76, and so on. The density does not become too high, the density and the filtering action of the fiber filtration layer 75 can be maintained substantially constant for a long period of time, and the suction resistance of the circulation pump 2 can be prevented from increasing.

Inside the filter 5, there are an inflow chamber 71 and an outflow chamber 70, and a granular filter layer 76 and a fiber filter layer 75 are provided between them with three cages 72, 73 and 74 interposed between them. 72,7 children of each cage
3,74 has a flow blocking part 84 in the center and a through hole outside it.
The presence of the grid portion 86 having 85 allows the water passing through the granular filtration layer 76 and the fiber filtration layer 75 to be diffused throughout.

That is, since the water in the filter case 69 can be spread outward by the children 72, 73, 74 of the respective cages, the granular filter layer 76,
When water passes through the fiber filtration layer 75, the water is filtered into a granular filtration layer.
76, it can be diffused to the entire filtration area of the fiber filtration layer 75, and local generation of water supply and accompanying reduction in filtration capacity can be prevented as much as possible.

The granular filter layer 76 is received from below by a cage 74, and the fibrous filter layer 75 is received from above by a cage 72, the projections 87 of these cages 72 and 74 having respective projections 75 and 76. Since it is on the side, each filter layer 75,76 and the cage 72,7
It is possible to secure a predetermined gap with the projection 87. Therefore, in the center of the cage 72,74
However, even if there is, water can be made to flow over each of the filtration layers 75 and 76, and the filtration area is not reduced.

In addition, the projection 73 of the cage 73 between the granular filtration layer 76 and the fiber filtration layer 75 is on the granular filtration layer 76 side, and as described above, the projection 87 causes the granular filtration layer 76 and the cage child 73 to pass through.
It is possible to secure a gap between and. On the other hand, there is no protrusion 87 on the fiber filtration layer 75 side, but since this fiber filtration layer 75 is received by the upper cage 72 when the circulation pump 2 is operating, the thickness of the fiber filtration layer 75 in the vertical direction is unnecessarily increased. Unless the thickness is increased, a gap is likely to be formed between the fiber filtration layer 75 and the lower cage 73, and the filtration performance is not significantly impaired.

Therefore, the same ones can be used for the children 72, 73, 74 of the respective cages, and the manufacturing cost can be reduced without affecting the filtration capacity. When washing the granular filter layer 76 and the fiber filter layer 75, the filter 5 is separated from the check valve 59 at the lower end of the suction pipe 17 in the water of the bath 1 to remove the filter 5
Take out of the water in bath 1. At this time, since the upper filtration outlet 82 of the filter 5 is fitted into the fitting recess 65 of the check valve 59 from below, the filtration outlet 82 is fitted into the fitting recess of the check valve 59.
Can be easily removed from 65.

The filter 5 is fixed to the inner wall 1a of the bathtub 1 via the suction plate 100, but the suction part 97 of the suction projection 95 on the side of the filter 5 is fitted into the small-diameter suction recess 99 of the suction plate 100. Since it is adsorbed, it suffices to remove the adsorption part 97 from the adsorption recess 99 of the adsorption disc 100, and despite using the adsorption disc 100,
The filter 5 can be easily removed as compared with the case where the large-diameter suction cup 98 is removed from the inner wall 1a of the bath 1.

After removing the filter 5 from the water in the bath 1, the lower cover 79 is removed from the upper case 78, and the granular filter layer 76 and the fiber filter layer 75 in the upper case 78 are taken out and washed. Then, when the washing of the granular filtration layer 76 and the fiber filtration layer 75 is completed, the granular filtration layer 76 and the fiber filtration layer are provided in the upper case 78.
After loading 75 and fitting the lower lid 79 to the upper case 78, the entire filter 5 is once put in the water of the bath 1 to remove air.
Then, the filter outlet 82 of the filter 5 is connected to the fitting recess 65 of the check valve 59.
And the suction portion 97 of the suction protrusion 95 is fitted and sucked into the suction concave portion 99 of the suction plate 100 in the suction state on the inner wall 1a side of the bathtub 1.

In this case, after removing the filter 5,
Remove the suction cup 100 on the inner wall 1a side of the bath 1 and filter 5
Before attaching to the inside of the bathtub 1, the suction concave portion 99 of the suction plate 100 may be fitted to the suction portion 97 of the suction protrusion 95. The installed filter 5 has a filter outlet 82 above it.
Fits into the fitting recess 65 of the check valve 59 from below, and the lower part is fixed to the inner wall 1a of the bathtub 1 by the suction cup 100, so that the bather can enter and leave the bathtub 1 and the water level The stability of the filter 5 is good even if it changes significantly.

In particular, since the filter 5 is always in the water of the bathtub 1, even though the suction part 97 is fitted into the suction concave portion 99 of the suction plate 100 and sucked, it is filtered due to the waviness of the water surface during bathing. The outlet 82 comes out of the fitting recesses 64, 65 of the check valve 59,
The filter 5 will not move instablely and will not accidentally come off the inner wall 1a of the bath 1.

Further, since the check valve 59 at the lower end of the suction pipe 17 is always in the water of the bathtub 1, it is not necessary to stop the circulation pump 2 even when the filter 5 is removed, and the circulation pump 2 can be operated. The filter 5 can be attached and detached while it is in operation. The filtration case 69 is divided into an upper case 78 and a lower lid 79 that is removably fitted to the lower end of the upper case 78, and a fiber filtration layer 75 and a granular filtration layer are provided in the upper case 78.
Since 76 is put in, even if the filtration case 69 shakes together with the suction pipe 17 in the bathtub 1, the lower lid 79 is difficult to remove, and water enters from the fitting portion of the upper case 78 and the lower lid 79. Can also be filtered by the filter layers 75 and 76 in the upper case 78.

That is, the upper case 78 is removably fitted to the upper flexible suction tube 17, and the lower lid 79 is fixed to the inner wall 1a of the bathtub 1 by the suction plate 100, so that when taking a bath. Filter 5
When it comes into contact with, the amount of shaking on the upper side of the filtration case 69 increases. For this reason, when the filtration case 69 is divided on the upper side, if the fitting accuracy is poor, the fitting part is likely to come off when the filter case 5 comes into contact with the filter 5 and shakes. There is a problem that the water in the bathtub 1 enters the filtration case 69 from a part and flows into the suction pipe 17 side without being filtered. Therefore, when the filtration case 69 is divided on the upper side, extremely high processing accuracy and sealing accuracy are required for the fitting portion in order to prevent these.

However, in this embodiment, the filter case 69 is divided into an upper case 78 and a lower lid 79 on the lower side with less shaking, and the fiber filter layer 75 and the granular filter layer 76 are provided in the upper case 78.
The bottom cover 79 can be securely prevented from coming off the upper case 78 even with a simple fitting structure, and even if water in the bathtub 1 enters from the fitting part, the granular shape of the upper case 78 It can be filtered by the filter layer 76 and the fiber filter layer 75.

Even if the suction cup 100 is not provided,
The external force when the filtration case 69 shakes is the upper case 78 and the lower lid 79.
The lower lid 79 does not come off from the upper case 78 because it does not directly come into contact with the fitting portion. Moreover, since the lower lid 79 side is fixed to the inner wall 1a of the bathtub 1 by the suction cup 100, the lower lid 79 does not come off from the upper case 78 due to the weight of the granular filtration layer 76. It is not necessary to make the fitting precision with 79 tight.

The upper cage 72 has a locking portion 80 and an upper case 78.
Since the lower cage 74 is detachably locked in the lower lid 79 by the locking portion 81, the upper case 78 and the lower lid 79 are separated from each other. Even when the 75,76 are washed, the cages 72,74 do not come off each time, and the filtration layers 75,76 can be easily washed.

FIG. 12 illustrates the second embodiment of the present invention, in which a plate-shaped filter layer 102 made of sponge or the like is fitted between the granular filter layer 76 and the cage 74 so as to fit in the lower lid 79. The filter layer 102 is provided so as to be filtered before the granular filter layer 76. By doing so, the filtering effect is further improved.

In the above embodiment, two suction plates 100 are used.
Although the filter 5 is detachably fixed to the inner wall 1a of the bathtub 1 by means of the suction projections 95 and 95, only one of them may be used depending on the shape of the bathtub 1. Further, as the long fibers 92 of the fiber filtration layer 75, other than polypropylene, chemical fibers such as polyester and nylon, or natural fibers may be used. Furthermore, the long fibers 92 may be used in the state of a twisted string in which a large number of fibers are gently twisted, or may be used as it is without being in a string state.

[0072]

According to the present invention as set forth in claim 1, the circulation pump 2 is arranged on the bathtub 1, and the circulation pump 2 is arranged.
The filter 5 placed in the water of the bath 1 is detachably connected to the lower end of the suction pipe 17 that communicates with the device 2, and the water in the bath 1 is filtered by the circulation pump 2 to the filter 5, the suction pipe 17, and the circulation pump 2. While circulating through the discharge pipe 18 and the filter layer 7 in the filter 5
In a circulation type purification device for a bath in which the water in the bathtub 1 is filtered by 5,76, a fiber filter layer 75 is provided on the upper side and a granular filter layer 76 is provided on the lower side in the filter case 69 of the filter 5. The outflow chamber 70 over substantially the entire filtration area of the fiber filtration layer 75 is provided on the upper side of the fiber filtration layer 75, and the inflow chamber 71 over the substantially entire filtration area of the granular filtration layer 76 is provided under the granular filtration layer 76. Since it is provided, the fiber filtration layer 75 is not compressed by the weight of the granular filtration layer 76, and the filtration capacity of the fiber filtration layer 75 can be maintained for a long period of time. The outflow chamber 70 and the inflow chamber
Since 71 extends over substantially the entire filtration area of the fiber filtration layer 75 and the granular filtration layer 76, respectively, the filtration capabilities of the fiber filtration layer 75 and the granular filtration layer 76 can be efficiently exhibited and maintained.

According to the invention described in claim 2, in the invention described in claim 1, between the upper side of the fiber filtration layer 75, the lower side of the granular filtration layer 76, and the space between the two filtration layers 75, 76. Child of each
72, 73, 74 are provided, and since the flow blocking portion 84 is provided in the central portion of the children 72, 73, 74 of the respective cages, the water passing through the fiber filtration layer 75 and the granular filtration layer 76 is treated by the children 72, 73 of each cage. It can be diffused to the outside by the flow blocking portion 84 of 74, and the fiber filtration layer 75 and the granular filtration layer 76
Water does not flow intensively to the center side of the.

According to the present invention as set forth in claim 3, in the invention as set forth in claim 1 or 2, the upper halves 72 are provided on the fiber filtration layer 75 side, and the lower and middle halves 73, 74 are provided. Since the protrusions 87 for maintaining the gap are provided on the granular filter layer 76 side, respectively, water flows over the entire filter layers 75 and 76,
It is possible to prevent the filtration area from decreasing.

According to the present invention described in claim 4, in the invention described in claim 1, 2 or 3, the upper case of the filtration case 69 is detachably connected to the suction pipe 17 and the lower case is open. The upper case 78 is provided with a lower lid 79 that is removably fitted to the lower end of the upper case 78, and the fiber filtration layer 75 and the granular filtration layer 76 are provided in the upper case 78. Even if the filtration case 69 shakes integrally with the pipe 17, the lower lid 79 becomes difficult to remove, and even if water enters from the fitting portion between the upper case 78 and the lower lid 79, each filtration layer 75 in the upper case 78, It can be filtered at 76.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view of an apparatus main body including a circulation pump according to the first embodiment of the present invention.

FIG. 3 is a plan view of the apparatus body showing the first embodiment of the present invention with the upper lid removed.

FIG. 4 is a plan view of a bottom plate side of the apparatus body showing the first embodiment of the present invention.

FIG. 5 is a vertical sectional view of a water supply portion showing the first embodiment of the present invention.

FIG. 6 is a partially cutaway side view of the filter according to the first embodiment of the present invention.

FIG. 7 is a vertical sectional view of a filter according to the first embodiment of the present invention.

FIG. 8 is a partially cutaway plan view of the filter according to the first embodiment of the present invention.

FIG. 9 is a vertical cross-sectional view of an injection nozzle according to the first embodiment of the present invention.

FIG. 10 is a cross-sectional view of the check valve showing the first embodiment of the present invention.

FIG. 11 is a cross-sectional view of the filter showing the first embodiment of the present invention.

FIG. 12 is a vertical sectional view of a filter according to a second embodiment of the present invention.

[Explanation of symbols]

 1 Bathtub 1a Inner wall 2 Circulation pump 5 Filter 17 Suction pipe 18 Discharge pipe 69 Filtration case 70 Outflow chamber 71 Inflow chamber 72,73,74 Shelter 75 Fiber filtration layer 76 Granular filtration layer 78 Upper case 79 Lower lid

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location B01D 29/90 29/92 C02F 3/06 B01D 29/08 520 C 530 C 540 A 29/42 501 B 510

Claims (4)

[Claims] 1. A circulation pump (2) is arranged on a bath (1), and at the lower end of a suction pipe (17) communicating with this circulation pump (2), a filtration arranged in water of the bath (1). The device (5) is detachably connected, and the water in the bathtub (1) is filtered by the circulation pump (2), the filter (5), the suction pipe (17), the circulation pump (2) and the discharge pipe (18).
While circulating through the filter layer (75) (76) in the filter (5)
In a circulation type purification device for a bath that filters the water in the bathtub (1) by means of the Layers (76) are provided respectively, and an outflow chamber (70) covering substantially the entire filtration area of the fiber filtration layer (75) is provided on the upper side of the fiber filtration layer (75) on the lower side of the granular filtration layer (76). A circulation type purification device for a bath, characterized in that each of the inflow chambers (71) covers substantially the entire filtration area of the granular filtration layer (76). 2. An upper side of the fiber filtration layer (75) and a granular filtration layer (7).
Child cage (72) on the lower side of 6) and between both filtration layers (75) (76)
Circulation type for bath according to claim 1, characterized in that (73) (74) is provided, and a flow blocking part (84) is provided at the center of each child (72) (73) (74) of each cage. Purification device. 3. The upper filter (72) has a fiber filter layer (75) side, and the lower and middle cages (73) (74) have a granular filter layer (76).
The circulating purifying apparatus for a bath according to claim 1 or 2, characterized in that projections (87) for maintaining a gap are provided on respective sides. 4. An upper case (78) whose upper side of the filtration case (69) is detachably connected to the suction pipe (17) and whose lower side is open.
And a lower lid (79) that is detachably fitted to the lower end of the upper case (78), and the fiber filtration layer (75) is provided in the upper case (78).
The circulating purification apparatus for bath according to claim 1, 2 or 3, further comprising a granular filtration layer (76).