JPH05115715A - Device for purifying and heating bath water - Google Patents

Abstract

PURPOSE:To prevent the leakage of bath water from the peripheral part of a filter means by eliminating the internal pressure of the passage reaching a filter means in the case of the clogging of the filter means by arranging a pump behind the filter means and arranging a heating means behind the pump. CONSTITUTION:The main body unit 2 of a heating device is connected to the suction unit 3 and blowoff unit 4 arranged in a bathtub 1 through a suction pipe 5 and a return pipe 6. In the main body unit 2, the suction pipe 5 is connected to the upper part of a filter cylinder 11 through a water flow sensor 12 and a thermistor 13. In this case, a pump 14 is connected to the lower part (rear) of the filter cylinder 11 and the return pipe 6 is connected to the emitting part (rear) of the pump 14 through a heater housing 15. Bath water is passed through the filter cylinder 11 by the suction force of the pump 14. By this constitution, even when the filter cylinder 11 is clogged, the generation of the leakage of water from the peripheral part of the filter cylinder 11 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purifying and heating apparatus which is attached to a bath and purifies the bath water by filtering and heating it to maintain a required hot water temperature.

[0002]

2. Description of the Related Art Conventionally, bath water is contaminated with fat, sweat, dust, etc. adhering to the skin due to use, and therefore, it is the current situation that bath water is replaced once or every suitable number of uses. ..

Since such exchange of bath water causes waste of water and requires heating from cold water, it takes time and energy, and it is not possible to freely take a bath at any time.
In addition, it causes an increase in energy consumption.

Therefore, there has been proposed a unit in which the filtering unit and the heating unit are housed in one case and attached to a bath so that the bath water can be circulated to purify and keep warm. Has been put to practical use, for example, Japanese Patent Publication No.
It is disclosed in Japanese Patent No. 2062, Japanese Utility Model Laid-Open No. 2-71386, and the like.

In the conventional bath water purifying and heating device,
Since the pump that circulates the bath water is placed in front of the filtering means, impurities contained in the uncleaned dirty bath water that circulates from the bathtub adhere to the blades of the pump, reducing the pump's performance. At the same time, when the filtering means becomes clogged, the internal pressure of the flow path from the pump to the filtering means rises, which may cause a water leakage accident from the filtering casing or the pipe connecting portion.

[0006]

SUMMARY OF THE INVENTION The present invention solves the drawbacks found in conventional bath water purification and heating devices and prevents the occurrence of water leakage accidents.

[0007]

In order to solve the above-mentioned problems, the means adopted by the present invention is a bath water circulation circuit in which a bath and a main unit installed outside the bath are connected by a suction and reflux pipe. In the main body unit, a filtering means, a pump and a heating means are provided, and the bath water purified and heated by filtering and heating the bath water sucked by the pump to recirculate it in the bath, A pump is arranged behind the filtering means, and a heating means is arranged behind the pump.

[0008]

[Operation] The pump is placed behind the filtering means, and the suction force of the pump allows the bath water to flow through the filtering means. Therefore, even if the filtering means is clogged, Water leakage from the pipe connection can be prevented. Further, since the suction force of the pump is loaded in the filtering casing that houses the filtering means, the sealing structure for sealing the opening of the casing becomes simple.

[0009]

According to the present invention, it is possible to prevent the occurrence of water leakage from the casing or the pipe connecting portion which accommodates the filtering means, which facilitates the handling at home. Further, since the structure for sealing the opening of the filter casing becomes easy, the structure becomes simple and the cost can be reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings. In the figure, (1) is a bathtub, and the main unit of the bath water purifying and warming device for purifying the bath water according to the present invention in close proximity to the bathtub (1)
(2) is installed in the bathroom or outside the bathtub. The main body unit (2) is disposed on the inner wall of the bathtub (1) and sucks in the bathwater (3), the blowout unit (4) which blows out the bathwater into the bathtub (1), and two for suction and reflux. The pipes (5) and (6) are connected to circulate the bath water between the bath and the main body unit (2), and the bath water is filtered and heated in the main body unit (2). ..

Referring to FIG. 4, the main body unit (2) includes a substantially rectangular box-shaped main body casing (7), the upper surface of which is opened for cleaning or replacement of the filtering means and the like, and an inner lid. (8)
In addition, the upper lid (9) is openably and closably closed. An operation panel (10) including an indicator lamp for hot water temperature and a temperature setting button is arranged on the front surface of the main body casing (7). Further, a connection hole for connecting the two pipes (5) and (6) for suction and circulation is provided in the lower portion of the side surface of the main body casing (7). lid
(8) The casing (1) including (9) preferably has a height of about 40c.
It has a size of m, a width of about 30 cm, and a depth of about 20 cm, and is about 40 to 5 when compared with a conventionally known purification and heat retention device of this kind.
It is downsized by 0% or more.

A filter tube (11) is arranged in the main body casing (7), and the suction pipe (5) is provided above the filter tube (11) via a water flow sensor (12) and a thermistor (13). Connected. A pump (14) is connected to the lower part of the filter cylinder (11), and a reflux pipe (6) is connected to the discharge side of the pump (14) via a heater housing (15). The filter cylinder (11), the water flow sensor (12), the thermistor (13), the pump (14) and the heater housing (15) are housed in the main casing (7). The pump (14) includes a motor (16).

The filter cylinder (11) has a liquid-tight cylindrical shape with the lower part closed, and the upper part communicates with the opening (17) of the inner lid (8).
An outflow hole (18) is formed at the center of the lower part of the filter cylinder (11) and is connected to the suction side of the pump (14). In the filter tube (11),
The filter stone (20) is housed while being supported by a mesh-like support panel (19) that does not obstruct the flow of bath water. The filter stone (20) is an inorganic porous ceramic and has completely continuous pores. Such a filter stone is, for example, "Filton F
The soil conditioner marketed under the name "G (TM)" is suitable. This is an inorganic porous ceramics composed mainly of silica oxide and aluminum oxide, which has completely continuous pores, a porosity of 83.6% and a water absorption rate of 180.8.
%. The filter stone (20) is stored and held in a net bag,
It is inserted into the filter cylinder (11).

The bath water that has entered the filter cylinder (11) from the suction pipe (5) passes through the continuous pores of the filter stone (20), and the odor, foreign matter, fat content, etc. in the bath water during the passage. Is filtered. Filter stone (2
Since (0) has continuous pores as described above, the effective filtering area of the bath water passing through the filter stone (20) substantially increases, and the amount of bath water retained in the filter stone (20) increases. To do. This is
Filter stone (20) when circulating the bath water with the same pump capacity
It means that the speed of the bath water passing through
It is possible to improve the filtration capacity and to even out the flow of the bath water to prevent the generation of water passages that would make filtration impossible. Further, since the pore diameter of the continuous pores can be reduced to about 1 μ, it becomes possible to filter minute impurities. In the experiment, in the filtration of bath water mixed with a bath agent, it took 4 to 5 days for the conventional barley stone or zeolite to disappear the coloring due to the bath agent, but in the case of the filtration stone having continuous pores of the present invention, 12 The coloring due to the bath agent disappeared over time.

In the upper opening (17) of the filter tube (11), the middle plate (21)
Are fitted together, and the filter cylinder cap (22) is screwed on. A ring-shaped packing (23) is inserted on the outer peripheral surface of the lower portion of the middle plate (21) to seal between the middle plate (21) and the upper end face of the opening (17). According to the present invention, the pump (1
4) is arranged, and since the negative pressure due to the suction of the pump (14) is acting inside the filter cylinder (11), the inner tray (21) is simply fitted, and the negative pressure causes the filter cylinder (11) to fit. ), The packing (23) can be pressure-bonded to the upper end of the opening (17) to ensure hermeticity. On the other hand, in the conventional device, the pump is arranged in front of the filter cylinder, and the discharge pressure from the pump is applied inside the filter cylinder, so the cap is screwed into the filter cylinder opening, It was necessary to compress the packing with the tightening pressure to exert the sealing force. Therefore, in the conventional case, the packing may be twisted and damaged, or the packing may come off the opening. However, in the present invention, such a defect is eliminated, and the sealing property and the workability are improved. It has become possible. The filter stone (20) can be removed from the filter cylinder (11) for cleaning or replacement.

The filter cylinder cap (22) is for preventing overflow from the filter cylinder (11). If the main unit (2) is placed below the water level in the bath (1), the pump (1
When the operation of 4) is stopped, the bath water in the bathtub (1) flows back into the filter cylinder (11) due to the difference in water level, and the middle plate (21) is pushed up to open (1).
Filter barrel cap (22) as it may overflow from 7)
The rise of the inner plate (21) is prevented by the screw tightening force of.

A pump (1) is attached to the lower outlet (18) of the filter cylinder (11).
4) is connected. By arranging the pump (14) behind the filter tube (11), even when the inside of the filter tube (11) is clogged, excessive pressure is not applied to the pump as in the case where the pump is placed in front of the filter tube. Since there is no risk of water leakage, there is no risk of water leakage from the filter tube or pipe connection.

A heating means for heating the bath water is connected to the discharge side of the pump (14) to heat the bath water to a predetermined temperature. The heating means is, as shown in FIG. 5, a pipe-shaped ceramic heater (24) in which an electric heating element such as a nichrome wire is embedded, and a cylindrical heater housing for covering the outside of the ceramic heater (24).
(15), one end of the ceramic heater (24) is connected to the discharge side of the pump (14), and the other end is connected to the heater housing (1).
5) Open inside. One end of the heater housing (15) is closed and the open end is closed by a housing plug (25), and a reflux pipe (6) is connected to the upper surface near the housing plug (25). The bath water discharged from the pump (14) is heated while flowing through the ceramic heater (24), flows out into the heater housing (15), and is further heated on the outer peripheral surface of the ceramic heater (24), while flowing into the reflux pipe. It flows to (6). In this way, the bath water is heated on both the inside and outside of the ceramic heater (24), so that the heating efficiency is improved and the circulation pipe is
Since (6) is also connected to the root of the heater housing (15), the distance from the tip of the ceramic heater (24) to the reflux pipe (6) becomes longer, and the heating time becomes longer accordingly. .. Further, as the bath water flowing out from the ceramic heater (24) into the heater housing (15) and reaching the reflux pipe (6) is in a turbulent state as shown in the figure, the bath water is evenly distributed in the ceramic heater (24). Contact with each other to improve heating efficiency.
Also, by connecting the return pipe (6) to the upper surface of the heater housing (15), there is no possibility that air will accumulate in the heater housing (15).

In the bathtub (1), a suction unit (3) connected to a suction pipe (5) for sucking bath water, and a return pipe.
A blowing unit (4) connected to (6) and for circulating heated bath water into the bath (1) is separately provided.

The suction unit (3) has a vertically elongated substantially rectangular casing (26) whose lower surface is open, and a suction plate (27) is detachably attached to the rear surface of the casing (26). The suction unit (3) can be installed at an arbitrary position by adsorbing the suction disk (27) on the inner surface of the bath. A connection pipe (28) for connecting the suction pipe (5) is planted on the upper part of the casing (26) while communicating with the inside. The lower opening of the casing (26) is a suction port (29) for bath water, and a bag-shaped dust collector with an elastic material such as rubber attached to the mouth part called a hair catcher adjacent to this suction port (29). Net (3
0) is detachably attached. The pre-filter stone (31) is arranged on the upper part of the dust collecting net (30). The pre-filter stone (31)
Is a ceramic having the same inorganic porosity and continuous pores as the filter stone (20) housed in the filter cylinder (11),
It is housed in a net bag and disposed in the casing (26) so that it can be taken out freely.

The bath water sucked from the lower suction port (29) of the casing (26) has a dust collection net (30) for removing large dust such as hair and lint, and then bathed with a pre-filter stone (31). Small impurities and odors in water are pre-filtered. Then, filter tube (1
The main filtration is performed with the filter stone (20) in 1). By performing pre-filtration with the suction unit (3) in this way, impurities that reach the filter stone (20) of the main filtration are reduced, and the cleaning cycle of the filter stone (20) of the main filtration is once every 2-3 months. It was 2 to 3 times that of the case without pre-filtration. The removal of the suction unit (3) and the cleaning of the pre-filter stone (31) housed inside it can be performed easily and easily compared with the operation of taking out and washing the filter stone (20) of the main filtration. The extension of the washing cycle of the filter stone by adopting the filtration brings great convenience to the user in using the device, and has an advantage that the practical value is improved.

The suction unit (3) is constructed separately from the blowout unit (4), and the suction unit (3) can be installed at a position different from the blowout unit (4). .. The suction unit (3) is preferably installed close to the bottom of the bathtub (1). As a result, the impurities that have settled on the bottom surface of the bath (1) can be sucked in, and the bath water can be kept cleaner.

As shown in FIGS. 8 and 9, the blowout unit (4) has a casing (32) slightly smaller than the casing of the suction unit, and the casing (32) is a suction plate.
By (33), it can be attached to the inner surface of the bathtub and installed at any position. A connection pipe (34) for connecting the return pipe (6) is planted on the upper surface of the casing (32). An outlet nozzle for the connecting pipe (34)
(35) is connected, and the tip of the blowing nozzle (35) is a casing.
It projects horizontally from the front of (32) and opens. Further, an air pipe (36) is connected in the middle of the blowout nozzle (35) so that air bubbles can be mixed into the blown out bath water. The air supply from the air pipe (36) can be interrupted by an opening / closing knob (37) installed on the front surface of the casing (32).

The blowing unit (4) is installed near the water surface of the bathtub (1). The blowout power decreases due to the water pressure at a position deeper than the water surface in the bathtub (1), but if it is installed near the water surface, the blowout power will increase and the stirring power of the bath water will increase, so it will float on the water surface It is possible to effectively prevent impurities such as hot water and fat from adhering to the inner surface of the bath, and it is possible to keep the inner surface of the bath clean.

In use, water is first passed through the faucet into the circuit and then the pump (14) is activated. By the operation of the pump (14), the bath water in the bathtub (1) is sucked from the suction port (29) of the suction unit (3), passes through the suction pipe (5) and enters the main unit (2). Bath water in the main unit (2) is
After filtering with filter stone (20) and purification, pump (14)
Hot water that has been heated in the heater housing (15) to a predetermined temperature via the recirculation pipe (6) is ejected from the ejection nozzle (35) of the ejection unit (4) into the bath (1). It
The bathtub (1)
Since the bath water inside is always clean and maintained at a predetermined temperature, it is possible to take a bath whenever necessary and it is not necessary to replace the bath water, so that a significant water saving effect can be brought about.

[Brief description of drawings]

 Fig. 1 Perspective view showing the installed state Fig. 2 Circuit diagram Fig. 3 Side view showing the installed state Fig. 4 Exploded perspective view of the main unit Fig. 5 Partial cutaway view of the heater housing Fig. 6 Perspective view of the suction unit Fig. 7 Same sectional view 8 Perspective view of blowing unit Figure 9 Side view of the same section

[Explanation of symbols]

 (1) Bathtub (2) Main unit (3) Suction unit (4) Blowing unit (5) Suction pipe (6) Return pipe (7) Main casing (8) Inner lid (9) Upper lid (10) Operation panel (11 ) Filter cylinder (12) Water flow sensor (13) Thermistor (14) Pump (15) Heater housing (16) Motor (17) Opening (18) Outflow hole (19) Support panel (20) Filter stone (21) Middle plate ( 22) Filter cylinder cap (23) Packing (24) Ceramics (25) Housing plug (26) Casing (27) Suction plate (28) Connecting pipe (29) Suction port (30) Dust collecting net (31) Pre-filter stone ( 32) Casing (33) Suction board (34) Connecting pipe (35) Blow-out nozzle (36) Air pipe (37) Open / close knob

Claims (3)

[Claims] 1. A bath water circulation circuit is formed by connecting a bath and a body unit installed outside the bath with suction and reflux pipes, and a filtering means, a pump and a heating means are provided in the body unit. In a device for purifying and heating bath water that was sucked by a pump and heated to circulate in the bath, a pump was placed behind the filtering means, and a heating means was placed behind the pump. A bath water purifying and heating device characterized in that 2. The filtering means has a cylindrical filtering cylinder, an opening is formed in the upper surface of the filtering cylinder, a middle plate is detachably fitted in the opening, and a ring shape is formed on the outer peripheral surface of the middle plate. Fit the packing of
The purification and heating device according to claim 1, wherein the inner plate is sucked into the filter cylinder by the suction force applied by the suction of the pump, and the packing is pinched on the upper end surface of the opening. 3. The heating means is composed of a pipe-shaped ceramic heater connected to the discharge side of the pump and a heater housing surrounding the ceramic heater, and the tip of the ceramic heater is extended and opened in the heater housing. The purification / warming device according to claim 1, wherein a circulation pipe connected to the heater housing is connected to the base of the ceramic heater in close proximity to the base.