JPH07241415A - Bath water circulating and purifying device - Google Patents

Abstract

PURPOSE:To surely wash filter media which circulate and purify the bath water in a bathtub with relatively simple constitution. CONSTITUTION:A filter case 8 of the bath water circulating and purifying device constituted to circulate the bath water in the bathtub 3 in a circulation flow passage 7 having a circulating pump 2 and to filter the bath water by the granular filters housed in a filter case 8 installed in the circulating flow passage 7 is connected downstream of the circulating pump 2. An inflow path 14 for washing and inflow path 15 for purifying communicating with the circulating pump 2 are connected to approximately the center and the side of the base of the filter case 8. In addition, the device is provided with a flow passage selector valve 18 which selects these flow passages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water circulation purification in which water in a bathtub is circulated in a circulation passage by a circulation pump and is filtered and purified by at least a granular filter mounted in the circulation passage. Regarding the device.

[0002]

2. Description of the Related Art As a device for purifying bath water in a domestic bathtub to enable it to be used for a long period of time, for example, as shown in JP-A-4-35710, a bath in the bathtub is disclosed. A bath equipped with a bath water purifying unit in which water is pumped through a suction pipe by a circulation pump and filtered by a filter, sterilized by ultraviolet rays or ozone, heated by a heater, and discharged into a pipe to be returned into the bath. A water circulation purification warming device is provided.

The filter for filtering the bath water in the bath water circulating purification heat retention device is used as a filter member in combination with a granular filter filled with natural stones such as barley stone or sun stone.

[0004]

However, the bath water in the bathtub is pumped up by the circulation pump through the suction pipe and filtered by the granular filter, and is heated by the heater and returned into the bathtub through the discharge pipe. In the bath water purifying heat retaining device provided with the water purifying unit, the particulate filter in the bath water purifying unit is contaminated during use for a long period of time to deteriorate the purifying function and reduce the effect of purifying the bath water. The particulate filter housing must be disassembled and the filter member replaced or cleaned.

Further, disassembling the granular filter housing in the bath water purifying unit to replace or clean the filter member is difficult.

Therefore, in the conventional bath water purifying and heat retaining device,
In many cases, the filter member is not replaced or washed, and the cleaning function is deteriorated.

Therefore, in view of the above situation, it is an object of the present invention to make it possible to easily wash the granular filter housing without disassembling it and to maintain a high purification capacity.

[0008]

According to the present invention, bath water in a bath is circulated in a circulation passage provided with a circulation pump, and is filtered by a granular filter housed in a filtration case provided in the circulation passage. In, while connecting the filtration case to the downstream of the circulation pump, at the bottom center of the filtration case and sideways,
The cleaning inflow passage and the purification inflow passage connected to the circulation pump are connected to each other, and a passage switching valve for switching these passages is provided.

Further, according to the present invention, a funnel-shaped bottom plate having a large number of holes is attached to the bottom of the granular filter storage portion of the filtration case.

Further, according to the present invention, the drainage flow path is branched and connected to a position downstream of the filtration case of the circulation flow path, and a bypass flow path is provided to connect the upstream side of the circulation pump of the circulation flow path and the drainage flow path, and The circulation passage or the drainage passage is provided with a drainage passage switching valve for switching the bath water passing through the filtration case to the bathtub side or the drainage passage side.

Further, according to the present invention, a control means for controlling at least the flow passage switching valve and the drainage passage switching valve is provided, and at the time of purification, the flow passage switching valve is switched to the purification inflow passage and at the same time the drainage passage switching valve is circulated. In addition to this, when switching the flow path switching valve to the cleaning inflow path at the same time as the cleaning, the drain path switching valve is switched to the drain flow path, and the flow path switching valve is switched from the cleaning inflow path to the purification inflow path. After a predetermined time, the drain passage switching valve is controlled to switch to the circulation passage.

[0012]

When purifying the bath water, the circulation pump is operated to circulate the bath water in the bath in the circulation passage, pass through the filtration case, and filter by the granular filter housed in the filtration case.

Further, when the granular filter is clogged due to the purification of the bath water and the purification capacity of the granular filter is lowered, the flow path switching valve is switched to the washing inflow passage, and the bath water is circulated from the washing inflow passage by the circulation pump. Water is sprayed from the approximate center of the bottom of the filtration case toward the granular filter, and the water flow agitates the granular filter to remove dirt adhering to the filter due to friction caused by contact or collision between the filters, and the cleaning ability of the granular filter. Can be recovered.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the present invention will be described with reference to FIG. 1. (1) is a purifying apparatus main body, and a circulation pump (2) is attached on the way, and the circulation water in the bathtub (3) is attached by this circulation pump. The circulation flow path (7) that absorbs (4) water by the water suction pipe (5) and circulates it, and sprays water from the water discharge pipe (6) into the bath (3), and the circulation pump (2) of this circulation flow path. A filtration case (8) installed downstream, a sterilization case (9) installed downstream of the filtration case (8) of the circulation channel (7), and a heating case (10) installed downstream of the sterilization case. It is mainly composed of and.

Further, in the filter case (8), a large number of granular filter materials (11) (11) ... The bottom of the storage section that stores these filter materials is equipped with a funnel-shaped bottom plate (13) having a large number of water passage holes (12) (12) ... At the bottom of the filtration case (8), the circulation pump of the circulation passage (7) is provided at the substantially central portion thereof.
(2) A cleaning inflow path (14) branched from the downstream side, and a purification inflow path (1) branched from the downstream side of the circulation pump (2) to the side thereof.
5) are linked together.

In the filtration case (8), it is located opposite to the outlet (16) of the purifying inflow passage (15), and the bath water spouted from this outlet is spread over substantially the entire surface of the bottom plate (13). Dispersing diffuser (1
7) is provided.

Reference numeral (18) is a flow path switching valve attached to the branch portion of the cleaning inflow passage (14) and the purification inflow passage (15), which is sucked up from the water suction pipe (4) by the circulation pump (2). The bath water (4) is supplied into the filtration case (8) through the cleaning inflow passage (14) or the purification inflow passage (15).

The sterilization case (9) contains a sterilization lamp (not shown) such as a mercury lamp which emits ultraviolet rays having a wavelength of about 185 nm or about 250 nm, and the heating case (10). Accommodates a heating heater (not shown) such as a sheath heater, sterilizes the bath water absorbed from the bathtub (3) into the circulation passage (7) by the sterilization case (9), and uses the heating case (10). The bath water is heated to a predetermined temperature to keep it warm.

(19) is a circulation pump of the circulation passage (7)
(2) A bypass channel connecting the upstream side and the downstream side of the filtration case (8), and a drainage channel switching valve at the branch portion downstream of the filtration case.
(20) is attached, the drainage channel (21) is branched and connected in the middle, and the bath water that has passed through the filtration case (8) is sterilized by switching the drainage channel switching valve (20). The water is circulated by supplying water to 9), or is supplied to the bypass flow path (19) and drained to the outside of the drain flow path (21).

Reference numeral (22) is a check valve installed in the middle of the drainage channel (21), and the drainage channel (21) when switching the drainage channel switching valve (20) to the circulation channel (7) side. It prevents the intake of air from the tip.

(23) is a drainage channel switching valve (2) of the circulation channel (7)
0) The flow rate sensor installed downstream detects the flow rate in the circulation flow path (7), and when the flow rate drops below a predetermined flow rate due to clogging of the filter material (11) (11). The flow path switching valve (18) is switched to the cleaning inflow path (14), and as shown in FIG. 2, the bath water is ejected from the substantially central portion of the filtration case (), and the ejected water flow causes the filter material () ( ) ・ ・ Move from top to bottom and stir to bring the filter materials into contact and collide with each other to remove dirt adhering to the surface for cleaning.
The drainage passage switching valve (20) is switched to the drainage passage (21), and the bath water after cleaning that has passed through the filtration case (8) is drained to the outside.

Further, the flow passage switching valve (18) and the drainage passage switching valve (2
When cleaning the filter material (11) (11) ··· by switching (0), the circulation pump (2) causes the water absorption pipe (5)
The bath water (4) in (3) is sucked up and ejected from the nozzle (24) provided at the tip of the cleaning inflow passage (15) toward the filter material (11) (11) .. After washing, a part of the bath water is drained to the outside through the bypass channel (19) and the drain channel (21), and a part of the bath water is directly supplied to the circulation pump (2) from the bypass channel (19). The water flow that circulates and is jetted from the nozzle (24) is increased.

(25) is the circulation pump (2) and the flow path switching valve (1)
8), the drainage channel switching valve (20), the control circuit for controlling the heater in the heating case (10), such as the flow sensor (2
When the flow rate is detected by 3) and the filter material (11) (11) ··· is purified, the flow path switching valve (18) and the drainage channel switching valve (20) are switched and controlled, and, for example, a timer cleans around 1 minute. At the end, first, the drainage channel switching valve (20) is switched to the circulation channel (7) side after a predetermined time (for example, 10 seconds) after switching the channel switching valve (18) to the purification channel (15), and the filter material (11) (11) ・ ・
Dirt remaining in the filtration case (8) due to the purification of
It is configured so that it is not circulated in (3).

During normal operation, the circulation pump (2) sucks up the bath water (4) in the bath (3) into the circulation passage (7) and then the filtration case (15) from the purification inflow passage (15). 8) Water is supplied to the inside and passes through the filter material (11) (11) ...
Water is supplied to (9) and sterilized by ultraviolet rays, and the heating case (1
Water is supplied to 0) and heated to a predetermined temperature, and the water is discharged from the discharge pipe (6) to the bathtub.
After returning to (3), the bath water (4) is purified and kept warm.

The cleaning of the filter material (11) (11) ... May be automatically performed by the flow rate detection by the flow rate sensor (23) as described above. For example, a cleaning switch is provided on the operation panel (not shown). It may be configured to be provided and operated by operating this switch.

[0026]

With the structure according to the present invention, by washing the filter material using bath water, a motor for vibrating the filter material and rotating a case containing the filter material as in the conventional case. It is possible to wash the filter material with a relatively simple structure without the need to provide a filter, and it is possible to reduce the generation of noise during washing.

Further, by arranging the bottom plate for accommodating the filter material in a funnel shape, the filter material can be stirred by the bath water substantially uniformly, and it is possible to prevent deterioration of the cleaning ability due to variations in stirring as much as possible.

Further, at the time of cleaning the filter material, a part of the bath water that has passed through the filtration case is returned directly to the circulation pump through the bypass passage to circulate, thereby increasing the water force ejected from the cleaning flow path. Can be surely stirred.

After cleaning the filter material, the drain passage switching valve is switched after a predetermined time after switching the flow passage switching valve, so that the dirt remaining in the filtration case during the cleaning operation is surely drained to the outside from the drain passage. However, it is possible to prevent the remaining dirt from flowing into the bathtub.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram for similarly explaining the operation.

[Explanation of symbols]

 2 Circulation pump 3 Bathtub 4 Bath water 7 Circulation flow path 8 Filtration case 11 Filter material 12 Water passage hole 13 Bottom plate 14 Cleaning inflow path 15 Purification inflow path 18 Flow path switching valve 19 Bypass flow path 20 Drainage path switching valve 21 Drainage Channel

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication point 540 A (72) Inventor Soichiro Ohama 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Shio Hamada 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Santo Electric Co., Ltd.

Claims (4)

[Claims] 1. A circulating pump in which bath water in a bath tub is circulated through a circulation passage provided with a circulation pump and is filtered by a granular filter housed in a filtration case provided in the circulation passage. And a flow path switching valve that connects the cleaning inflow path and the purification inflow path that are connected to the circulation pump and that switches these flow paths, in the vicinity of the center and the side of the bottom of the filtration case. A bath water circulation purification device that is characterized by 2. The bath water circulation purification apparatus according to claim 1, wherein a funnel-shaped bottom plate having a large number of holes is attached to the bottom of the granular filter housing of the filtration case. 3. A bypass flow path is provided to branch-connect the drainage flow path to a position downstream of the filtration case of the circulation flow path, and to connect a drainage flow path upstream of the circulation pump of the circulation flow path. The bath water circulation purification apparatus according to claim 1, wherein a drain passage switching valve that switches the bath water that has passed through the filtration case to the bathtub side or the drain passage side is provided in the circulation passage or the drain passage. 4. A control means for controlling at least the flow passage switching valve and the drainage passage switching valve is provided, and at the time of purification, the flow passage switching valve is switched to the purification inflow passage and at the same time, the drainage passage switching valve is switched to the circulation passage. In addition, at the time of cleaning, the flow path switching valve is switched to the cleaning inflow path, at the same time the drain path switching valve is switched to the drain flow path, and the flow path switching valve is switched when switching from the cleaning inflow path to the purification inflow path. The bath water circulation purifying apparatus according to claim 3, wherein the drainage passage switching valve is controlled to be switched to a circulation passage after a predetermined time.