JP3764891B2 - Bath circulation filtration system - Google Patents

Description

  The present invention relates to a bathtub circulation filtration system that circulates and filters hot water in a bathtub in a bathing facility.

2. Description of the Related Art Conventionally, bathing facilities have been provided with a bathtub circulation filtration system in which hot water in a bathtub is periodically or constantly circulated and filtered and returned to the bathtub for reuse. Such a bathtub circulation filtration system includes an overflow-type bathtub circulation filtration system that once collects overflow water flowing out of a bathtub in a collection tank installed in a machine room and circulates and filters the overflow water. (For example, see Patent Document 1)
JP 2003-311107 A

  The bathtub circulation filtration system of the above-mentioned conventional configuration is such that hair, dirt, dust and other floating substances mixed in hot water are discharged from the bathtub together with overflow water, and the overflow water containing the floating substances is once recovered in the recovery tank. It is the structure sent to the filtration apparatus. However, since the recovery tank is installed in the machine room as described above, it is difficult to clean and maintain the recovery tank. As a result, Legionella bacteria are generated, which is unsanitary.

  Due to these hygienic problems, it has been prohibited in recent years to install a recovery tank in the machine room, and overflow water containing suspended solids has been discarded without being recovered. However, this configuration can solve hygienic problems such as generation of Legionella, but it is not economical because the overflow water cannot be reused. Moreover, in order to replenish hot water corresponding to the discarded amount, it is necessary to heat water at a low temperature to an appropriate temperature, which is uneconomical in terms of energy.

  The present invention has been made in view of the above-described circumstances, and the object thereof is to achieve resource saving, cost reduction, and energy saving by reusing overflow water without becoming unsanitary. It is in providing the bathtub circulation filtration system which can be performed.

The bathtub circulation filtration system according to claim 1, comprising: a bathtub having a suction port and a spout; a filtration device that filters hot water; a heat exchanger that heats hot water; and a pump that circulates hot water. The hot water in the bath is circulated by the pump so that the hot water in the bathtub is sent from the suction port to the filtration device and filtered by the filtration device, and then heated to a predetermined temperature by the heat exchanger. In the bathtub circulation filtration system returned from the jet port to the bathtub, the recovery tank part having the suction port and the bathtub part having the jet port are formed by partitioning a part of the bathtub, and the upper end thereof is the A partition plate formed lower than the upper end of the bathtub, and formed at the lower end thereof with a communication port that communicates a bottom portion in the tank of the bathtub portion and a bottom portion in the tank of the recovery tank portion; From the bathtub Substantially horizontal plane and outflow adjusting means, the upper end surface of the partition plate the collection tank portion of low rather with than the height of the partition plate and for adjusting the hot water outflow which is discharged into the collection tank portion through the through opening And a drain outlet for draining hot water in the recovery tank section to the outside of the recovery tank section.

According to the bathtub circulation filtration system of Claim 1, since the height of the partition plate was formed lower than the upper end of the bathtub, when the water level in the bathtub portion becomes higher than the partition plate, the height of the upper end of the bathtub is increased. Before reaching, it is collected in the recovery tank section as overflow water beyond the partition plate. At that time, the floating matter floating in the hot water in the bathtub is also collected in the collection tank together with the overflow water. In addition, since the partition plate is provided with a communication port that communicates the bottom of the tank in the bathtub and the bottom of the tank in the collection tank , the hot water at the bottom of the tank in the bathtub is Due to the water pressure in the bathtub, it flows out to the collection tank through the communication port. In that case, the deposit which has settled in the bottom in a bathtub part is also collect | recovered by the collection tank part with hot water. The hot water collected in the collection tank is sent from the suction port to the filtration device to remove suspended matter and sediment, and then heated to a predetermined temperature by the heat exchanger and returned from the jet to the bathtub part. It is.

  In this way, the hot water collected in the collection tank, including overflow water, can be reused, saving resources by saving water resources and reducing costs by reducing water bills. Can do. Further, the overflow water, which is a temperature close to the optimum temperature, can be reused by heating it to a predetermined temperature, and it is not necessary to heat the water having a low temperature to a predetermined temperature, thereby saving energy.

  In addition, since the outflow amount adjusting means can adjust the outflow amount of hot water through the communication port, if the outflow amount is adjusted to be small, the amount of overflow water that exceeds the partition plate will increase accordingly, while the outflow amount will be reduced. If the amount of adjustment is increased, the amount of overflow water that exceeds the partition plate is reduced, and the amount of overflow water can be adjusted by adjusting the amount of hot water flowing out through the communication port. Water can be recovered.

Moreover, since the collection tank part is provided in a part in the bathtub, cleaning and maintenance in the collection tank part can be easily performed in the same manner as cleaning the bathtub. Thereby, troubles, such as generation | occurrence | production of Legionella bacteria, can be prevented easily and more sanitary circulation filtration can be performed.
Furthermore, since with a drainage port for draining the hot water substantially collecting tank portion at a position close to the horizontal plane and the upper end surface of the partition plate rather low than the height of the partition plate to the outside of the recovery tank portion, the recovery tank portion When the water level reaches the drain, the hot water is drained from the drain to the outside of the collection tank. Thereby, it can prevent that the hot water in a collection tank part flows backward into a bathtub part exceeding a partition plate, and can maintain the hot water in a bathtub part hygienically.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The bathtub circulation filtration system 1 includes a bathtub 2 and a circulation path 3. The bathtub 2 is formed in a concave shape as a whole, and has a jet port 4 on its inner wall surface 2a and a jet port 5 and suction ports 6 and 7 on its bottom surface 2b. The circulation path 3 includes a hair catcher 9, a pump 10, a filtration device 11, and a heat exchanger 12 on a pipe 8 extending from the suction ports 6 and 7 to the jet ports 4 and 5. The pump 10 circulates hot water in the circulation path 3 in the direction from the suction port 7 toward the jet ports 4 and 5 (see arrow A in the figure). The hair catcher 9 removes hair and towel waste in hot water. The filtration device 11 removes suspended matters and precipitates in the hot water using a filter medium. The heat exchanger 12 heats the hot water to a predetermined temperature. Thereby, hot water in the bathtub 2 is circulated on the circulation path 3 by the pump 10, whereby hair and towel scraps are removed by the hair catcher 9, suspended matter and sediment are removed by the filtration device 11, and heat After being heated to a predetermined temperature by the exchanger 12, it is returned into the bathtub 2 from the ejection ports 4 and 5 (see arrow B in the figure).

  In the above-described configuration, the partition plate 13 is disposed in the bathtub 2. This partition plate 13 divides a part of the bathtub 2 to form a recovery tank portion 14 having the above-described suction port 7 and a bathtub portion 15 having the above-described suction port 6 and the ejection ports 4 and 5. . In this case, the height of the partition plate 13 (see H1 in the figure) is lower than the height of the bathtub 2 (see H2 in the figure). In addition, a communication port 16 for communicating the bathtub portion 15 and the collection tank portion 14 is formed at the lower end of the partition plate 13. The communication port 16 will be described in detail. In the communication port 16, the opening lid plate 18a as the outflow amount adjusting means referred to in the present invention slides in the vertical direction with respect to the support plate 18b and is screwed by the screw 17. (See arrow D in the figure), the opening area is adjusted.

  Further, a grating 19 is disposed in the collection tank unit 14. The grating 19 is formed in a lattice shape, and a drain outlet 20 is provided in part of the grating 19, and the convex portion 22 formed on the inner wall surface 2 c of the bathtub 2 and the convex portion formed on the wall surface of the partition plate 13. 23, the height of the partition plate 13 is lower than that of the partition plate 13 (see H3 in the figure). Therefore, the drain port 20 provided in the grating 19 is also held at a height lower than the height of the partition plate 13.

  Further, in the above-described configuration, the water level sensor 24 is connected to the connection port 31 formed in the collection tank unit 14 through the communication pipe 25 and the valve 26. Here, the hot water in the water level sensor 24 and the hot water in the collection tank section 14 are communicated with each other via a communication pipe 25. Therefore, since the hot water level in the water level sensor 24 and the hot water level in the recovery tank section 14 change in conjunction with each other, the water level sensor 24 extends from top to bottom and has six electrode rods 27a to 27a having different lengths. 27f detects the hot water level in the water level sensor 24 to detect the hot water level in the recovery tank section 14, and starts a signal or hot water supply to stop the hot water supply in the replenishing hot water device based on the detected water level. A signal to the effect is sent to stop or start hot water supply (see arrow E in the figure) from the refilling water heater to the bathtub portion 15.

  Moreover, in the above-described configuration, the filtration device 11 has a backwash function. The backwash function is a function of draining suspended matter and sediment collected on the filter medium together with hot water. If it demonstrates concretely, in the filtration apparatus 11, the flow of the hot water in a filter medium will become a reverse direction by usual by switching the valve in the filtration apparatus 11 at the time of backwashing. Further, when the motor 28 is operated and the electric valve 29 is opened, hot water in the bathtub portion 15 is sent from the suction port 6 to the filtration device 11. Then, the sent hot water flows in the reverse direction in the filter medium, so that the filter medium is backwashed, and the suspended matter and the sediment accumulated in the filter medium are drained from the drain pipe 30 together with the hot water.

  Next, the operation of the above configuration will be described. When a bather enters the bath tub part 15, in the upper layer of the bath tub part 15, the water level of the hot water in the bath tub part 15 becomes high. In this case, as described above, the bath tub part 15 and the recovery tank part 14 Since the height of the partition plate 13 for partitioning is formed lower than the height of the bathtub 2, even if the water level of the bath portion 15 is higher than the height of the partition plate 13, the bath portion 15 Instead of flowing out of the bathtub 2 from the outside, it will flow out of the bathtub section 15 over the partition plate 13 into the collection tank section 14, that is, recovered into the collection tank section 14 as overflow water. become. At this time, the floating matter floating in the hot water in the bathtub portion 15 is also collected into the collection tank portion 14 together with the overflow water (see arrow F in the figure).

  On the other hand, in the lower layer of the bathtub part 15, a water flow is formed in the direction from the bathtub part 15 toward the collection tank part 14 by the hot water jetted from the jet outlets 4 and 5 (see arrow C in the figure). And by this water flow, regardless of whether the bather has entered the bathtub part 15, the hot water in the bathtub part 15 flows out from the bathtub part 15 to the collection tank part 14 through the communication port 16. That is, it will be collected in the collection tank section 14. At this time, the sediment that has submerged in the lower layer of the bathtub portion 15 is also collected in the collection tank portion 14 together with this water flow.

  The hot water collected in the collection tank 14 is circulated on the circulation path 3 by the pump 10, whereby hair and towel scraps are removed by the hair catcher 9, and suspended matter and sediment are removed by the filtration device 11. Then, after being heated to a predetermined temperature by the heat exchanger 12, the heat is returned from the spouts 4 and 5 into the bathtub portion 15.

  Further, if the opening area of the communication port 16 is adjusted to be small, the outflow amount of hot water flowing out from the bathtub portion 15 through the communication port 16 to the collection tank portion 14 is reduced, and the partition plate 13 is removed from the bathtub portion 15 accordingly. The amount of overflow water that exceeds and is recovered to the recovery tank section 14 increases. On the other hand, if the opening area of the communication port 16 is adjusted to be large, the amount of hot water flowing out to the recovery tank section 14 through the communication port 16 increases, and the amount of overflow water exceeding the partition plate 13 decreases accordingly.

  In addition, when a large number of bathers enter the bath tub part 15 at once, the amount of hot water flowing out from the bath tub part 15 over the partition plate 13 to the collection tank part 14 increases all at once, and the recovery tank part 14 In this case, the water outlet 20 provided in the grating 19 is held at a height lower than that of the partition plate 13 as described above. When the water level reaches the drain outlet 20, the hot water in the section 14 does not flow backward to the bathtub section 15 beyond the partition plate 13, but is drained from the drain outlet 20 to the outside of the collection tank section 14. (See arrow G in the figure).

  The volume of the recovery tank section 14 is determined by the position of the partition plate 13. Here, the volume of the recovery tank section 14, in other words, the layout of the partition plate 13 in the bathtub 2. An example of how to determine the position will be described.

For example, assuming that the area of the bathtub portion 15 is 10 square meters and the area occupying the bathtub portion 15 per bather is 1 square meter, the capacity of the bathtub portion 15 = the area of the bathtub portion 15 according to the equation (1) / The area that occupies the bathtub 15 per bather ... (1)
The capacity of the bathtub portion 15 is 10 people.

And assuming that the volume which occupies the bathtub part 15 per bather is 50 liters, according to the equation (2),
Overflow water volume = volume of bathing section 15 per bather x number of bathers (2)
The amount of overflow water when the number of bathers in the bathtub portion 15 is 10 is 500 liters.

  And by making 500 liters of overflow water amount at the time of capacity into the capacity | capacitance of the recovery tank part 14, the recovery tank part 14 can collect | recover up to 500 liters of overflow water, while the number of bathers is When the capacity exceeds 10 persons, for example, when 12 persons take a bath, 100 liters of overflow water for 2 persons is drained from the drain port 20. When the amount of hot water being circulated is reduced by this drainage, the amount of hot water in the bathtub portion 15 is reduced, and overflow water is less likely to flow out, so that the level of hot water in the recovery tank portion 14 is also unlikely to rise. When the water level sensor 24 detects a low water level, hot water is newly supplied from the replenishing hot water supply. As a result, old hot water is drained and new hot water is supplied.

  In this way, by determining the volume of the collection tank section 14 (positioning position of the partition plate 13) based on certain conditions, the overflow water can be reused when the number of bathers is less than or equal to the capacity, On the other hand, when the number of bathers exceeds the capacity, it is possible to obtain an effect that the overflow water for the surplus number of people is replaced with new hot water.

  As described above, according to the present embodiment, since the hot water collected in the collection tank unit 14 including the overflow water is reused, resource saving can be achieved by saving water resources. At the same time, the cost can be reduced by reducing water charges. Further, the overflow water, which is a temperature close to the optimum temperature, can be reused by heating it to a predetermined temperature, and it is not necessary to heat the water having a low temperature to a predetermined temperature, thereby saving energy.

Further, the amount of overflow water can be adjusted, and the overflow water can be recovered in an amount desired by the user.
Moreover, since the collection tank part 14 is provided in a part in the bathtub 2, cleaning and maintenance in the collection tank part 14 can be easily performed, and troubles such as generation of Legionella in the collection tank part 14 occur. Can be easily prevented, and more hygienic circulation filtration can be performed.

Moreover, since the hot water in the collection tank part 14 does not flow back to the bathtub part 15, the hot water in the bathtub part 15 can be kept hygienic.
The present invention is not limited to the above-described embodiment. For example, the outflow amount adjusting means may adjust the outflow amount by opening and closing a valve.

1 is an overall configuration diagram showing an embodiment of the present invention.

Explanation of symbols

In the drawings, 1 is a bathtub circulation filtration system, 2 is a bathtub, 4 is a spout, 5 is a spout, 7 is a suction port, 10 is a pump, 11 is a filtration device, 12 is a heat exchanger, 13 is a partition plate, 14 Is a collection tank part, 15 is a bathtub part, 16 is a communicating port, 18a is an opening cover plate (outflow amount adjusting means), and 20 is a drain port.

Claims (1)

A bath having a suction port and an outlet, a filtration device that filters hot water, a heat exchanger that heats hot water, and a pump that circulates hot water, and the hot water in the bathtub is circulated by the pump Accordingly, hot water in the bathtub is sent from the suction port to the filtration device and filtered by the filtration device, and then heated to a predetermined temperature by the heat exchanger and returned from the jet port to the bathtub. In the system,
A part of the inside of the bathtub is partitioned to form a recovery tank part having the suction port and a bathtub part having the jet port, and an upper end thereof is formed lower than an upper end of the bathtub and a lower end thereof. A partition plate formed with a communication port that communicates the bottom in the tank of the bathtub section and the bottom in the tank of the recovery tank section;
Outflow amount adjusting means for adjusting the outflow amount of hot water flowing out from the bathtub portion to the recovery tank portion through the communication port;
Wastewater said collecting tank portion at lower rather with than the height of the partition plate is located closer to the substantially horizontal plane and the upper end surface of the partition plate, draining hot water of the recovery tank portion to the outside of the recovery tank portion A bathtub circulation filtration system characterized by comprising a mouth.

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