JPH0435710A - Device for circulating, purifying and heat-insulating bathwater - Google Patents

Abstract

PURPOSE:To maintain the high purifying capacity over a long period by supplying the bathwater sucked up by a circulating pump to a purifying passage for discharging water for cleaning a granular filter through a passage switching valve. CONSTITUTION:The bathwater in a bathtub 1 is sucked up by a circulating pump 4 through a suction pipe 3, filtered by a granular filter 6, heated by a heater 7 and returned to the bathtub 1 through a discharge pipe 8 by this bathwater purifying unit. A passage switching valve 12 is provided to the passage for supplying the bathwater sucked up by the pump 4 to the inlet 15 of the filter 6, and a cleaning passage 23 is provided to discharge the inside cleaning water from the side wall 21 of the housing 17 for the filter 6. The bathwater sucked up by the pump 4 is supplied to the cleaning passage 23 through the switching valve 12. Consequently, the high purifying capacity of the device is maintained over a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Field of Application The present invention involves pumping up bath water in a bathtub through a suction pipe using a circulation pump, filtering it through a granular filter, heating it with a heater, and then pumping it through a discharge pipe. The present invention relates to a bath water circulation purification and heat retention device that includes a bath water purification unit that returns the bath water into the bathtub.

B. Summary of the Invention The present invention provides a bath water purification unit in which bath water in a bathtub is pumped up via a suction pipe by a circulation pump, filtered by a granular filter, heated by a heater, and returned to the bathtub via a discharge pipe. In the bath water circulation purification and heat retention device, a flow path switching valve is provided in the flow path that supplies the bath water pumped up by the circulation pump to the inlet of the granular filter, and a flow path switching valve is provided for internal cleaning from the side wall of the filter housing of the granular filter. The granular filter can be easily cleaned by providing a cleaning channel for discharging cleaning water, and supplying bath water pumped up by the circulation pump to the cleaning channel via the channel switching valve. It has been made possible to do so.

C. Prior Art Conventionally, devices that purify the bath water in household bathtubs so that they can be used for a long period of time have been proposed, for example, in Japanese Utility Model Application Publication No. 63-69517 and Japanese Utility Model Application Publication No. 64-12611. As disclosed in , there is provided a bath water circulation purification and heat retention device in which bath water in a bathtub is pumped up via a suction pipe by a pump, filtered by a filter, heated by a heater, and returned to the bathtub via a discharge pipe. has been done.

Filters for filtering bath water in bath water circulation purification devices include sheet filters using filter paper as the filter member, porous filters using porous resin or porous ceramics, and filters made of maifan stone, sun stone, etc. A combination of granular filters made of natural stones (so-called mineral stones) packed in a container is used as a filter member.

For example, in a bath water circulation purification and heat retention device provided for general households, as shown in Part 3, bath water (41) in a bathtub (40) is pumped through a suction pipe (43) by a circulation pump (42).
), the pump is filtered by passing it through a porous filter (44), and further, the circulation pump (
When returning the bath water pumped up by 42) into the bathtub (40) via the discharge pipe (45), a granular filter (
47), the bath water is heated by a heater (46) and returned to the bathtub (40).Normally, the circulation pump (42)
), a porous filter (44), a heater (46), a granular filter (47), etc. are arranged in the bath water purification unit (50).

D. Problem to be Solved by the Invention By the way, bath water purification is carried out in which bath water in a bathtub is pumped up through a suction pipe by a circulation pump, filtered by a granular filter, heated by a heater, and returned to the bathtub through a discharge pipe. In a bath water circulation purification and heat retention device equipped with a bath water purification unit, if the function of the granular filter in the bath water purification unit deteriorates, the bath water purification effect cannot be obtained, so the granular filter is disassembled and the filter member is removed. Must be replaced or cleaned.

In general, it is not only difficult to disassemble the granular filter in the bath water purification unit and replace or clean the filter member, but also air leaks into the bath water circulation path when replacing or cleaning the filter member. If this happens, there is a high risk that an accident will occur where the bath water circulation function by the circulation pump will not work properly.

For this reason, in conventional bath water circulation purification and heat retention devices, the filter member is not frequently replaced or cleaned, and the bath water is often used with reduced purification ability.

Therefore, in view of the actual situation in the conventional bath water circulation purification and heat retention device as described above, the present invention aims to maintain a high purification ability, and to easily clean the granular filter in the bath water purification unit without disassembling it. The present invention provides a bath water circulation purification and heat retention device.

In order to achieve the above-mentioned object, the present invention pumps bath water in a bathtub through a suction pipe with a circulation pump, filters it with a granular filter, heats it with a heater, and discharges it. In a bath water circulation purification and heat retention device including a bath water purification unit that returns the bath water into the bathtub via a pipe, a flow path switching valve is provided in a flow path that supplies the bath water pumped up by the circulation pump to the inlet of the granular filter. A cleaning channel is provided for discharging cleaning water for internal cleaning from the side wall of the filter housing of the granular filter, and bath water pumped up by the circulation pump is sent to the cleaning channel via the channel switching valve. It is characterized in that it is supplied.

F Function In the bath water circulation purification and heat retention device according to the present invention, the flow path switching valve switches the flow path of the bath water pumped up by the circulation pump between a circulating purification state using the granular filter and a washing state of the granular filter. In the circulation purification state, the circulation pump circulates the bath water in the bathtub through the granular filter. Furthermore, in the cleaning state, the bath water pumped up by the circulation pump is supplied to the cleaning channel. As a result, the bath water is discharged from the side wall of the filter housing of the granular filter as cleaning water for internal cleaning.

G. Example Hereinafter, examples of the bath water circulation purification device according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the bath water circulation purification and heat retention device according to the present invention pumps bath water (2) in a bathtub (1) through a suction pipe (3) with a circulation pump (4) and filters it through a porous filter. (10)
and an inflow path (1) for bath water pumped up by the circulation pump (4) to the granular filter (6).
1) is provided with a first channel switching valve (12), and a second channel switching valve (14) is provided in the outflow channel (13) from the granular filter (6) of the bath water. .

The granular filter (6) has a bottomed cylindrical filter housing (16) having a bath water inlet (15) at the bottom (16).
A granular filter member (18) made of maifan stone or the like is housed in 17), which is closed by an upper part 1 (20) having an outlet (19) for bath water. As shown in FIG. 2, the filter housing (17) of this granular filter (6) has a side wall portion (
21) is provided with a cleaning channel (23) having a plurality of discharge ports (22) for discharging cleaning water for internal cleaning.

The first flow path switching valve (12) has an outlet (
15) via a first connecting pipe (24), and a second cleaning channel (23) provided in the side wall (21) of the filter housing (17).
are connected via a connecting pipe (25). That is, the first flow path switching valve (12) provided in the inflow path (11) of the bath water pumped by the circulation pump (4) to the granular filter (6) The flow channels are switched so that the pumped bath water is switched and supplied to the inlet (15) of the granular filter (6) and the cleaning channel (23).

Further, the second flow path switching valve (14) provided in the outflow path (13) from the granular filter (6) is connected to the heater (
7) and a rain pipe (26) for discharging cleaning water are connected, and the bath water discharged from the granular filter (6) is switched and supplied to the heater (7) and the drain pipe (26). The flow path is switched so that the flow path is changed.

Here, the first and second flow path switching valves (12).

(14) are switched in conjunction with each other by operation levers (not shown), and the first flow path switching valve (12) selects the flow path of the inlet (15) of the granular filter (6). In this case, the second passage switching valve (14) selects the passage to the heater (7), and the first passage switching valve (12) selects the passage to the granular filter (6). When the cleaning channel (23) is selected, the second channel switching valve (14) is connected to the drain pipe (26) for discharging the cleaning water.
).

In the bath water circulation purification and heat retention device having such a configuration, the circulation pump (4) pumps up the bath water (2) in the bathtub (1) while filtering it through the porous filter (5).

The state in which the first flow path switching valve (12) selects the flow path of the inlet port (15) of the granular filter (6) is the state in which the bath water is circulated and purified by the granular filter (6). The bath water pumped up from the bathtub (2) by the circulation pump (4) is filtered and activated by the granular filter (6), heated by the heater (7), and heated by the bath 1 (1). ) is returned within. That is, in this bath water circulation purification state, the bath water (2) in the bathtub (1) is circulated while being subjected to filtration activation treatment by the granular filter (6) and heating treatment by the heater (7). let Thereby, the bath water (2) in the bathtub (1) can always be kept clean and at an appropriate temperature.

Further, the state in which the first flow path switching valve (12) selects the cleaning flow path (23) to the granular filter (6) is a cleaning state of the granular filter (6), Bath water pumped up by the circulation pump (4) is supplied to the cleaning channel (23). In this cleaning state, the bath water pumped up from the bathtub (1) by the circulation pump (4) flows into the filter housing (17) of the granular filter (6).
) is discharged as cleaning water for internal cleaning from the discharge port (22) of the side wall (21). Thereby, the filter member (18) in the filter housing (17) can be cleaned without disassembling the granular filter (6).

By cleaning the filter member (17) without disassembling the granular filter (6) in this way, air does not enter the bath water circulation path, and the bath water is circulated by the circulation pump (4). There is no possibility of an accident occurring that would cause the system to stop working properly.

The bath water used for cleaning the filter member (17) is supplied from the second flow path switching valve (14) to the drain hose (26).
Bath above through! (1) is discharged to the outside.

In addition, if the bath water used for cleaning the filter member (17) is returned to the bathtub (1), the bath water in the bathtub (1) must be replaced with new bath water after the cleaning operation. For example, there is no need to provide the second flow path switching valve (14).

H Effects of the Invention As described above, in the bath water circulation purification and heat retention device according to the present invention, the bath water circulation purification and heat retention device according to the present invention has a flow path switching function that switches the flow path of the bath water pumped up by the circulation pump between the circulation purification state by the granular filter and the cleaning state of the granular filter. By simply operating the valve, the granular filter in the bath water purification unit can be easily cleaned without disassembling it, and there is no chance that air will enter the bath water circulation path during cleaning.

Therefore, according to the present invention, it is possible to provide a bath water circulation purification and heat retention device that can maintain high purification ability over a long period of time.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal side view showing the configuration of a bath water circulation purification and heat retention device according to the present invention, and FIG. 2 is a cross sectional plan view of a main part of a granular filter used in the bath water circulation purification and heat retention device. FIG. 3 is a partially longitudinal side view showing the configuration of a conventional bath water circulation purification and heat retention device. (3)・・・・・・・・・・・・ (4)・・・・・・・・・・ (6)・・・・・・・・・・ (7)・・・・・・・・・・・・・ （８）・・・・・・・・・ （１０）・・・・・・・・・ （１１）・・・・・・・・・（１２）・・・・・・... (15) ....... (17) ....... (21) ....... (23) ...・・・・・・ Suction pipe Circulation pump Granular filter Heater Discharge pipe Bath water circulation purification unit Flow path to granular filter Flow path switching valve Granular filter inlet Filter housing Filter housing side wall cleaning flow path etc. Fig. 2 Figure 3

Claims (1)

[Scope of Claims] A bath equipped with a bath water purification unit that pumps up bath water in the bathtub via a suction pipe by a circulation pump, filters it with a granular filter, heats it with a heater, and returns it into the bathtub via a discharge pipe. In the water circulation purification and heat retention device, a flow path switching valve is provided in the flow path that supplies the bath water pumped up by the circulation pump to the inlet of the granular filter, and a cleaning for internal cleaning is provided from the side wall of the filter housing of the granular filter. A bath water circulation purification and heat retention device, characterized in that a cleaning channel for discharging water is provided, and the bath water pumped up by the circulation pump is supplied to the cleaning channel via the channel switching valve.