JPS5817614Y2 - Bath water circulation filtration device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a circulating filtration device for bath water, and particularly relates to an improvement in the form of piping constituting the circulation path.

The bath water circulation filtration device to which this invention is directed is employed in relatively large-scale bathhouses other than domestic ones.

In such bathhouses, circulation filtration devices are used to achieve the goal of "energy saving" and to clarify the bath water.

FIG. 1 is a flow diagram schematically showing an example of a conventional device.

For example, a circulation path including a bathtub 1 and a filter 2 is formed as shown by the arrow in FIG.

Bath water 3 stored in the bathtub 1 is forcedly circulated by a pump 4.

Particularly, paying attention to the introduction route and the exit route to the bathtub 1, both of them may be arranged at or near the bottom of the bathtub 1.

Among these two types of routes, there is a clear reason why the arrangement of the derived route is specifically selected as shown in FIG.

This is to prevent air from being sucked into the pump 4.

This is because, in general, the lubricating effect of water that is sucked into the pump plays a major role.

Therefore, when air is drawn into such a pump, the friction parts within the pump are subject to excessive wear.

Therefore, the entire inside of the bathtub 1 cannot be efficiently circulated in one flow.

In other words, a short path as shown by the broken line arrow 5 in FIG. 1 occurs.

On the other hand, scale generated in the bath 3 usually floats on its surface layer.

Therefore, the current situation is that the efficiency of circulating filtration in such a system cannot be achieved as desired.

Therefore, in order to compensate for the inefficiency of circulating filtration, it is necessary to increase the amount of circulation, which inevitably increases the capacity of the pump 4, which increases the electricity bill. This would defeat the purpose of such a device.

Furthermore, in bathhouses equipped with circulation filtration devices such as those described above, a situation often arises in which a large number of people bathe in the bathtub 1 at the same time.

In such a case, the bath water 3 will overflow, and hot water containing thermal energy will wastefully escape.

This not only causes loss of heat and water, but also leads to an unnecessary increase in the amount of domestic wastewater, increasing the burden on wastewater treatment equipment.

Therefore, some kind of improvement is desired in this regard as well.

Therefore, the main purpose of this invention is to provide a bath water circulation filtration device with excellent circulation filtration efficiency.

Another object of this invention is to provide a bath water circulation filtration device that can eliminate unnecessary overflow.

Simply put, this invention is characterized by the provision of a control tank for temporarily storing bath water following the bathtub in the circulation path.

Other objects and features of this invention will become clearer from the detailed description given below with reference to the drawings. FIG. 2 is a flow diagram showing one embodiment of this invention.

In FIG. 2, a bathtub 1 is shown at the left end, and bath water 3 is stored here.

The circulation route of this bath water 3 is as follows when the bathtub 1 is the starting point.
Route 6. Control tank 7. Route 8. Hair catcher9. Route 10. Filtration pump 4. Path 11° Single control valve 12. Route 13. Filter 2, route 14.
Single control l 2 , route 15. It is configured to be introduced into the bathtub 1 from the bottom of the bathtub 1 via the steam/water mixer 31 and the path 17.

Below, each component shown in this flow diagram will be explained approximately along this circulation path.

The path 6 is led out from a relatively upper part of the bathtub 1 and is configured to receive overflow of the bath water 3.

The path 6 is introduced into the relatively upper part of the control tank 7.

A temperature controller 18 is provided on this path 6, and is configured to detect the temperature of the bath water 3 therein and control a solenoid valve 35, which will be described later.

Parallel to the path 6, a path 20 is provided with a valve 19 interposed therebetween.

The path 20 is led out from a relatively lower part of the bathtub 1.

The control tank T is preferably made of a material that takes heat insulation into consideration.

Two different water levels, a first water level 21 and a second water level 22, are set in relation to the control tank I.

A pole tap 23 is provided in connection with the first water level 21 .

When the water level drops below the first water level 21, the pole tap 23 gradually replenishes water from outside the circulation path depending on the degree of the drop.

That is, the pole tap 23 is connected via the valve 25 to a path 24 that is directly connected to the water supply outside the circulation path.

Note that instead of the pole tap 23, a solenoid valve or the like may be used.

A water level detector 28 is provided in connection with the second water level 22 of the control tank I.

The water level detector 28 detects that the water level in the control tank 7 has fallen below the second water level 22, and the filtration pump 4
It is controlled so that it stops.

The single control valve 12 has a path 11°13.14
, 15 and the five routes that pass through route 29.

At least two types of connection states are achieved by operating the lever 30 of the single control valve 12.

The first connected state is achieved when the above-mentioned normal circulation is running, and the path 11 and path 13. Route 14 and route 15 are each specifically connected, and route 29 is not connected to any other route.

The second connected state is achieved when backwashing the filter 2, in which the paths 11 and 14. Route 13 and Route 2
9 are specifically connected to each other, and the path 15 is not connected to any other path.

As has already been made clear, when performing normal filtration, the filter 2 introduces water through the upper path 13 and extracts it through the lower path 14.

Conversely, when backwashing is performed, the water is introduced through the lower path 14 and extracted through the upper path 13.

Steam supplied from a steam boiler 33 is supplied to the steam-water mixer 31 via a path 34.

A solenoid valve 35 is interposed in the path 34 .

The solenoid valve 35 is controlled by the temperature controller 18.

That is, when the temperature detected by the temperature controller 18 becomes lower than a predetermined value, the solenoid valve 35 is opened, and in response, steam from the steam boiler 33 is supplied into the steam/water mixer 31. Here, the temperature of the bath water guided to the path 17 is increased by the liquefaction energy of the steam.

If the temperature detected by the temperature controller 18 is equal to or higher than a predetermined value, the solenoid valve 35 is closed, no steam is supplied to the steam/water mixer 31, and the bath water passes through.

A path 37 is formed that branches from a path 34 from the steam boiler 33 and reaches a storage tank 36.

Hot water at a high temperature is stored in the storage tank 36, and is led from there to the bathtub 11 via a path 38.

A valve 39 is provided in the path 38, and by opening the valve 39, hot water can be directly supplied into the bathtub 1.

The path 38 can be used when filling the empty bathtub 1 with bath water, or can be further branched and used to supply hot water (not shown).

A path 40 for supplying a disinfectant is added on the path 1T.

This disinfectant is, for example, a chlorine-based disinfectant, and is led from the sterilizer 41 to the path 40 via the pump 42, and is led to the path 1
The bath water 3 that has passed through the O filter 2 is introduced into the bathtub 1 through a path 17.

This introduction position of the channel 17 is preferably chosen at a position diagonally opposite the overflow part of the bathtub 1 from which the channel 6 starts.

That is, the introduction position of the path 17 is selected to be the farthest position from the overflow part and at the bottom of the bathtub 1.

Next, the operation of the above-mentioned circulating filtration device during normal operation will be explained.

1. The bath water 3 in the bathtub 1 flows from the end of the path 17 to the path 1.
It is moved along the flow towards the starting end of 6.

Accordingly, the scale floating on the surface layer of the bath water 3 is effectively introduced into the control tank 7 via the path 6.

The water level in the control tank 7 during normal operation is the first water level.

At this time, water is not replenished from the pole tap 23.

Then, the filtration pump 4 is in a driven state, and the bath water in the control tank 7 is guided to the filter 2, filtered there, and then introduced into the bathtub 1 again, thereby performing circulating filtration.

When the bath water 3 in the bathtub 1 decreases due to evaporation or use, the water level in the control tank 7 decreases to the second water level 221.
Since the pump 4 continues to be driven when the water level drops at 1, the water level in the control tank T falls below the first water level 21.

Accordingly, water is gradually replenished from the pole tap 23. At this time, water is gradually replenished by the amount that the bath water 3 has decreased, so the temperature of the bath water 3 in the bathtub 1 suddenly decreases. will not invite

Further, when the water level in the control tank T decreases and becomes lower than the second water level 22, the water level detector 28 is activated and the filtration pump 4 is stopped.

Therefore, air is not sucked into the filtration pump 4, which is advantageous for maintaining the life of the filtration pump 4.

For example, assume that many people enter the bathtub 1 at once.

At this time, the water level rises in the bathtub 1 by an amount equivalent to the volume of the bathing hole, and a large amount of bath water 3 overflows from the path 6.

However, this overflowing bath water 3 is conveniently routed from the water level 21 in the control tank 7 to the path 60.
stored in the space between.

Circulating filtration continues in this state.

After that, it is assumed that the bathing hole is raised above the bathtub 1 and the water level of the bathtub 3 is lowered.

At this point, there is no bath water being supplied from the bathtub 1 to the control tank 7 through the route 6, but since the filtration pump 4 is still operating, the bath water stored in the control tank 7 is being supplied to the filter. 2 and path 17, etc., into the bathtub 1.

Therefore, the water level of the bath water 3 in the bathtub 1 gradually rises.

In addition, while continuing to carry out the circulation filtration of the bath water as described above,
When the temperature drops due to water supply from outside the route or natural heat radiation, the temperature device 18 operates, the solenoid valve 35 is opened, and steam is supplied, and the circulating water and steam are mixed by the steam/water mixer 31. The temperature is increased.

Next, the case of backwashing the filter 2 will be explained.

Single control valve 12 by lever 30
The water (fresh or hot water) in the control tank 7 is forcibly guided to the path 14 by the filtration pump 4.

Next, the water led from the path 14 is backwashed in the filter 2, and is led from the path 13 to the path 29, from which it is discharged to the sewage.

When the water in the control tank 7 drops below the first water level 21, tap water flows in from the ball tap 23, so backwashing can be continued with tap water, which is cheaper than hot water.In other words, the bathtub 1 The bath water 3 inside is not wasted during such backwashing of the filter 2.

As described above, according to this invention, since the control tank is provided subsequent to the bathtub, the bathwater can be controlled with sufficient margin in the circulation path of the bathwater circulation filtration device.

Therefore, it is easy to position the path leading out from the bathtub so as to receive the overflow part of the bathtub.

Therefore, the efficiency of circulation filtration can be increased and the capacity of the circulation pump can be reduced, so that a circulation filtration device that is extremely effective for "energy saving" can be realized.

In addition, even if the water level in the bathtub temporarily rises due to multiple bathers, the bathwater can be temporarily stored without wasting it, reducing loss of bathwater and This will not cause an unnecessary increase in the amount of wastewater.

[Brief explanation of drawings]

FIG. 1 is a flow diagram showing an outline of a conventional device. FIG. 2 is a flow diagram showing an embodiment of this invention. In the figure, 1 is a bathtub, 2 is a filter, 3 is a bath water, 4 is a pump, 6, 8, 10, 11.13, 14°15.17 are paths constituting each part of the circulation path, and 7 is a pump. A control tank, 23 a ball tap, and 28 a water level detector.

Claims (3)

[Scope of utility model registration request] (1) A bath that includes a circulation path for bath water, a pump that forcibly circulates the bath water along the circulation path, and a bathtub and a filter that are respectively arranged at different positions in the circulation path. In the hot water circulation filtration device, a control tank for temporarily storing bath water is provided in a route from the bathtub to the filter, and the route between the bathtub and the control tank is relatively close to the bathtub. A circulating filtration device for bath water, characterized in that the path between the control tank and the filter is led out from a relatively lower part of the control tank. (2) the pump is controlled to be driven only when the water level in the control tank is above a predetermined level;
A circulating filtration device for bath water according to claim 1 of the utility model registration claim. (3) The control tank is configured to supply water from outside the circulation path when the water level thereof falls below a predetermined amount, and the control tank is configured to supply water from outside the circulation path, Hot water circulation filtration device.