JPH0819711A - Circulation/purification apparatus for bath - Google Patents

Abstract

PURPOSE:To discharge water easily from a filtration tank, to prime a circulating pump from the tank, and to improve the operability of the washing and exchange of a filter medium in the tank etc. CONSTITUTION:A filtration tank 4 is placed above the water level of a bathtub; a suction side passage 47 is connected to the upper or lower part of the tank 4, while a discharge side passage 48 is connected with the other part of the tank 4; water in a bathtub is pumped up into the tank 4 through the passage 47 by a circulating pump 5; the water, after being filtered by the filter medium 3 in the tank 4, is returned to the bathtub through the passage 48. A communicating passage 20 which passes above the water level of the tank 4 is installed in the passage 47 or the passage 48, which is connected with the lower side of the tank 4; the pump 5, which is installed between the passage 20 and the tank 4, is arranged below the water level of the tank 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention pumps water in a bathtub into a filtration tank through a suction side passage by a circulation pump,
The present invention relates to a circulation purification device for a bath, in which water after being filtered by a filtering material in the filtration tank is returned to a bath via a discharge side passage.

[0002]

2. Description of the Related Art As a circulation purification device for a bath,
As described in JP-A-63-28418, hot water in the bathtub is pumped into a filtration tank through a passage on the suction side by a circulation pump, filtered by a filtration material in the filtration tank, and kept warm or heated by a heater. After that, there is a so-called circulation type in which the hot water is returned to the bathtub through the discharge side passage.

In this conventional circulation purification apparatus, a suction side passage is connected to the upper side of a filtration tank incorporated in the upper part of the apparatus main body, and a discharge side passage is connected to the lower side thereof, and the suction side passage is provided in the middle thereof. A circulation pump disposed below the filtration tank is installed, and a heater is installed in the middle of the discharge side passage.

[0004]

In the conventional circulation purification apparatus, the discharge side passage is connected to the lower side of the filtration tank. Therefore, if the lid of the filtration tank is opened, the siphon effect of the lid will open the hot water in the filtration tank. All can be discharged to the bathtub through the discharge side passage, and there is an advantage that the filter medium in the filter tank can be easily washed or replaced.

However, when the circulating pump is started and the operation is started after cleaning or exchanging the filter material in the filter tank,
Even if so-called priming water is put into the filtration tank, it will flow out from the filtration tank to the bath via the discharge side passage. Therefore, in the conventional circulation purification device, in the state where the lower ends of the suction-side passage and the discharge-side passage are closed with a finger or a plug, priming water must be introduced into the filtration tank to the connection position of the suction-side passage. There is a drawback that the operation is very complicated.

Moreover, before the water is put into the filtration tank, the lower ends of the suction side passage and the discharge side passage are completely closed, and when a large amount of water is put into the filtration tank at a time in that state, the suction side passage is formed. Also, since air is trapped in the discharge-side passage and water does not easily enter the suction-side passage and the discharge-side passage, the air is gradually discharged from the lower ends of the suction-side passage and the discharge-side passage into the bath while filtering. It is necessary to fill the tank with water in sequence.

In view of such conventional problems, the present invention makes it possible to easily draw out water from the filtration tank and to easily add priming water from the filtration tank to the circulation pump side. The invention provides a circulating purifying apparatus for a bath, which is remarkably improved in operability in cleaning or replacement.

[0008]

According to the present invention as set forth in claim 1, the filtration tank 4 is arranged above the water surface in the bathtub B, and the suction side is provided at either one of the upper portion and the lower portion of the filtration tank 4. The passage 47 is connected to the other side, and the discharge side passage 48 is connected to the other side, and the water in the bath B is pumped into the filtration tank 4 through the suction side passage 47 by the circulation pump 5, and the water is filtered by the filter medium 3 in the filtration tank 4. In the circulation purification device for the bath, which is designed to be returned to the bath B through the discharge side passage 48 after filtering the
Of the 47 and the discharge side passage 48, the passage 48 connected to the lower side of the filtration tank 4 is provided with a communication passage 20 passing above the water level at which water should be stored in the filtration tank 4, and This circulation pump is installed between 20 and the filtration tank 4.
The circulation pump 5 is arranged below the water level in the filtration tank 4.

According to a second aspect of the present invention, in the first aspect of the invention, the suction side passage 47 is provided in the upper portion of the filtration tank 4.
The discharge side passages 48 are connected to the lower portions of the above, and the circulation pump 5 and the communication passage 20 are provided in the discharge side passages 48.

[0010]

In the present invention described in claim 1, when the filtration tank 4 is opened, the water in the filtration tank 4 flows from the passage 48 connected to the lower side thereof to the bathtub B by the siphon effect via the communication passage 20. Since it is discharged, the water in the filtration tank 4 can be easily drained.

When water is added to the filtration tank 4, the passage 48
Since the communication passage 20 is provided in the filter tank 4, water is accumulated in the filtration tank 4 up to a predetermined water level. Since the circulation pump 5 is provided between the communication passage 20 and the filtration tank 4 and the circulation pump 5 is arranged below the water level of the filtration tank 4, the circulation pump 5 is installed from the filtration tank 4 side. You can easily supply priming water.

In the present invention according to claim 2, the filtration tank
Since the suction side passage 47 is connected to the upper part of 4 and the discharge side passage 48 is connected to the lower part, and the circulation pump 5 and the communication passage 20 are provided in the discharge side passage 48, the filtration tank 4 is installed when the circulation pump 5 is in operation. A negative pressure state can be achieved, and water can be drained when the filtration tank 4 is opened and priming water can be easily supplied.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. The drawings illustrate one embodiment of the present invention, FIG. 1 is a schematic view showing the configuration of a circulation purification device, FIG. 2 is a cross-sectional view showing the structure of the main part of the circulation purification device, and FIG. 3 is a circulation purification device in a bathroom. FIG. 4 is a cross-sectional view showing a state of use when attached to the bathtub of FIG. 4, and FIG. 4 is a front view of an operation portion of the control box.

As shown in FIG. 1, the circulation purification device 1 comprises a device main body 2, a filtration tank 4 which is arranged in the upper part of the device main body 2 and is filled with a filter medium 3, and a filtration inside the device main body 2. The circulation pump 5 located under the tank 4, the suction pipe 7 in which the lower end suction part 6 is immersed in the hot water W in the bath B, and the lower end discharge part 8 is immersed in the hot water W in the bath B. And a discharge pipe 9 provided.

As shown in FIG. 3, the main body 2 of the apparatus is
The suction part 6 and the discharge part 8 are mounted on the corners of the bath B so that they are immersed in the hot water W of the bath B. The filtration tank 4 includes a filter 10 for removing hair and the like,
It is filled up and down with a granular filter material 3 for filtering and purifying the dirt of the hot water drawn from the bath B, and the bottomed tank body 11 in which the filter 10 and the filter material 3 are freely inserted and removed 11 And the opening 12 on the tank body 11.
And a sealing lid 13 which is detachably mounted so as to open and close.

As the filter medium 3, a fired product such as granular ceramic is generally used. Also filter material
3 is put in a special container and the tank body 11 of the filtration tank 4 is
It is preferable that it can be easily put in and taken out.

Inside the tank body 11 of the filtration tank 4, the inside of the tank body 11 is provided with a filtration chamber 14 and an inflow passage on one side thereof.
A partition wall 16 is provided to divide into 15 and. Partition wall
The upper end of 16 is lower than the peripheral wall of the tank body 11,
The upper end side of the partition wall 16 serves as an inflow port 17 that communicates with the filtration chamber 14 from the inflow passage 15.

A suction pipe 7 is inserted into the inflow passage 15 from the lower surface side of the filtration tank 4 so as to communicate with the lower end portion of the inflow passage 15.
Are connected and a heater 18 is provided inside. The heater 18 is for keeping or heating the hot water pumped from the bath B, and is provided in the inlet 14 of the filtration tank 4 to the filtration chamber 14 side, that is, below the upper end of the partition wall 16 of the inflow passage 15. It is arranged vertically inside and is fixed to the bottom side of the filtration tank 4.

The circulation pump 5 is a suction pipe for the hot water W in the bath B.
It is for pumping up into the filtration tank 4 via the suction unit 6 of 7, and is arranged below the filtration tank 4 inside the apparatus main body 2. Connect the suction side of the circulation pump 5 to the connecting pipe.
It is connected to the bottom of the tank body 11 via 19 and, on the discharge side, the hot water after being purified by the filtering material 3 of the filtering tank 4 is in the bath B.
Communication path bent in an inverted U shape so as to return to the inside
It is connected via 20 to the discharge pipe 9.

A reciprocating pump, a spiral pump, etc. are used as the circulation pump 5, and any structure may be used. The communication passage 20 discharges the hot water in the tank body 11 into the bathtub B by the siphon effect when the sealing lid 13 of the filtration tank 4 is removed, and also supplies the priming water for the circulation pump 5 into the tank body 11. , To prevent the water from flowing out of the discharge pipe 9. The communication passage 20 should be placed in the tank body inside the device body 2 so that the bent portion 21 faces upward.
It is located on the side of 11 and its top, that is, bent portion 21.
Is located above the water level of the water to be supplied to the filtration tank 4.

The suction part 6 is provided with a check valve 22,
The check valve 22 allows the hot water on the heater 18 side in the inflow passage 15 to flow backward when the operation of the circulation pump 5 is stopped, etc.
It is for preventing backflow so as not to flow out.

The discharge part 8 is of a so-called jet nozzle type in which bubbles are mixed in the purified hot water and jetted into the hot water W in the bath B. An air pipe 23 having one end open to the atmosphere is connected to a discharge pipe 9 that connects the communication passage 20 and the discharge unit 8, and air is sent from the air pipe 23 to the discharge unit 8. The air pipe 23 has a solenoid valve 24, and by opening and closing the solenoid valve 24, jet injection and normal drainage can be switched.

The discharge part 8 itself may be a simple opening formed by opening the lower end of the discharge pipe 9, and in that case, the air pipe 23 and the solenoid valve 24 are unnecessary. The device body 2 is
As shown in FIG. 2, it has a case shape with an open upper end, and an edge portion 25 on the upper end side of the tank body 11 is attached to the opening side. Then, an upper cover 30 is provided on the outer periphery of the upper part of the device body 2.
Is detachably fitted.

As shown in FIG. 2, a rubber packing 26 is circumferentially mounted on the upper surface of the edge portion 25 of the tank body 11. The sealing lid 13 is detachably attached to the opening 12 of the tank body 11 so as to cover the filtration chamber 14 and the inflow passage 15 from the upper side. The sealing lid 13 has a fitting portion 27 that fits into the opening 12 of the tank body 11, and a flange portion 28 formed on the outside of the fitting portion 27. When fitted into the opening 12 of the tank 11, the flange 28 is
The rubber packing 26 on the edge portion 25 is abutted from above to keep the inside of the filtration tank 4 in a sealed state.

The sealing lid 13 is provided with a release valve 29 for releasing the negative pressure. The release valve 29 is used when the sealing lid 13 is removed from the tank body 11 and the filtration tank 4 is opened.
It is for releasing the negative pressure state inside and equalizing pressure. The release valve 29 is provided on the sealing lid 13 and also on the tank body.
It may be provided on the 11 side.

In FIG. 1, reference numeral 31 is a control box, which is incorporated in the apparatus main body 2. The control box 31 is for performing on / off switching of the heater 18 and control of temperature adjustment, as well as operation / stop control of the circulation pump 5 and opening / closing control of the solenoid valve 24.

A water temperature sensor 32 detects the hot water temperature in the upper part of the inflow passage 15, compares the output with the set temperature in the control box 31, and according to the comparison result, the control box 31 causes the heater 18 to operate. The hot water temperature in bathtub B is adjusted to the set temperature by controlling the energization ratio of.

Reference numeral 33 is a water temperature sensor for preventing overheating, which is provided when the temperature of the hot water in the inflow passage 15 rises to 50 ° C. or higher.
An output from the water temperature sensor 33 causes the control box 31 to stop energizing the heater 18.

Reference numeral 34 is a thermal fuse provided in the circulation pump 5, 35 is a thermal fuse provided in the inflow passage 15, and is a bathtub.
In order to protect the entire equipment when the temperature of the hot water in B reaches a high temperature without depending on the heater 18, the circulation pump 5 and the inflow passage
When the temperature of the hot water in 15 is 55 ° C. or higher, the thermal fuses 34 and 35 are activated to stop all control via the control box 31.

Reference numeral 36 is a seismic sensor that operates when the device body 2 is inclined and may fall, and 37 is an earth leakage breaker that operates when a leakage occurs in a wiring portion inside the device body 2. 38 is a water flow sensor for detecting the discharge amount of the circulation pump 5. When the discharge amount of the circulation pump 5 is constantly detected by this water flow sensor 38 and the discharge amount of the circulation pump 5 becomes extremely small (normally 20%). In the following, the operation of the circulation pump 5 is stopped to prevent idle operation, and when the discharge amount of the circulation pump 5 decreases due to clogging of the filter medium 3 (normal 5
A warning sound is emitted to notify the cleaning of the filter medium 3 in the following.

The operation section 39 of the control box 31 is constructed as shown in FIG. 4 and is provided on the front surface of the apparatus main body 2. 40 is a main power button for operating / stopping the circulation pump 5, and 41 is a warming button for turning on / off the heater 18. 42 is an UP button for water temperature setting, 43 is a DOWN button for water temperature setting, 44 is a setting display lamp, and each button 42, 4
By operating 3, the set hot water temperature can be adjusted appropriately, and the set temperature is displayed on the setting display lamp 44.
A temperature display lamp 45 is for displaying the hot water temperature detected by the water temperature sensor 32. In addition, each indicator lamp 44,4
The light emitting diode (LED) 5 lights up.

Reference numeral 46 denotes a jet button, and when the jet button 46 is operated, the electromagnetic valve 24 is opened and closed, and when the electromagnetic valve 24 is opened, a jet jet containing bubbles is ejected from the ejection portion 8. In this embodiment, the suction unit 6
The suction side passage 47 by the suction pipe 7 and the inflow passage 15
The discharge pipe 9 and the connecting pipe 19 each having a discharge part 8
The discharge passage 48 is constituted by the communication passage 20 and the communication passage 20.

Next, the operation of the circulation purification device 1 will be described. There is water in the tank body 11 of the filtration tank 4,
When the main power button 40 is pressed to start the operation of the circulation pump 5 with the opening 12 sealed with the sealing lid 13, the water in the filtration tank 4 is sucked by the circulation pump 5 via the connection pipe 19 and circulated. The water is discharged from the discharge portion 8 at the lower end of the discharge pipe 9 into the hot water W in the bath B through the pump 5 and the communication passage 20.

On the other hand, when the water in the filtration tank 4 is drained, the filtration tank 4 is in a hermetically sealed state with the flange portion 28 of the sealing lid 13 abutting on the rubber packing 26, and the inside of the filtration tank 4 becomes negative pressure. Therefore, the hot water W in the bathtub B is pumped from the suction part 6 through the suction pipe 7, the inflow passage 15, and the inflow port 17 into the filtration chamber 14 of the filtration tank 4.

At this time, the hot water drawn up by the circulation pump 5 first passes through the heater 18 when passing through the inflow passage 15.
Is kept or heated to a predetermined temperature. Then, hot water in a heat-retaining or heating state flows into the upper side of the filter chamber 14 from the inlet 17 at the upper end of the partition wall 16 with the suction action of the circulation pump 5, and then the filter 10 in the filter chamber 14 is filtered. While passing through the material 3 from the top to the bottom, the filter 10 removes hair and the like in the hot water, and the filter material 3 filters and purifies dirt from the hot water. The hot water purified by passing through the filtration tank 4 is connected pipe 19, circulation pump 5, communication passage 2
It is returned to the hot water W in the bathtub B through 0, the discharge pipe 9, and the discharge part 8.

Therefore, when the circulation pump 5 is in the operating state in this way, the hot water W in the bathtub B will not be mixed with the filtration tank 4 and the bathtub.
The hot water in the bath B can be successively purified by the filter medium 3 in the filtration tank 4 while circulating between the hot water and the hot water at a predetermined temperature by the heater 18 in the inflow passage 15.

The circulation pump 5 is located downstream of the filtration tank 4, and the circulation pump 5 sucks the hot water in the filtration tank 4 to pump the hot water W in the bath B into the filtration tank 4. During operation of the circulation pump 5, the inside of the filtration tank 4 is always in a negative pressure state. Therefore, the sealing lid 13 can be placed on the tank body 11, and the space between the tank body 11 and the sealing lid 13 can be sufficiently sealed with a simple structure such that the rubber packing 26 seals between them. The sealed structure can be very simple.

When cleaning or replacing the filter medium 3 in the filtration tank 4, first, the release valve 29 is opened to release the negative pressure state in the filtration tank 4. That is, even if the operation of the circulation pump 5 is stopped, the inside of the filtration tank 4 is in a negative pressure state, and the sealing lid 13
Is in close contact with the rubber packing 26 on the tank body 11 side, the negative pressure state in the filtration tank 4 is released by opening the release valve 29 to open the filtration tank 4 to the atmosphere. Then, the sealing lid 13 is easily removed and can be easily removed from the tank body 11.

When the release valve 29 is opened or the sealing lid 13 is removed to open to the atmosphere, the hot water in the tank body 11 of the filtration tank 4 is sucked by the siphon effect of the communication passage 20, the connecting pipe 19, the circulation pump. 5, through the communication passage 20 and the discharge pipe 9 and then discharged from the discharge part 8 to the bath B.
The hot water inside can be easily drained into bathtub B. Then, after removing the hot water in the tank body 11, the filter medium 3 is taken out and washed or replaced.

Circulation pump 5 after cleaning or replacement of filter medium 3
When restarting the operation of, the priming water is first supplied to the tank body 11 of the filtration tank 4 up to a predetermined water level, and then the tank body 11
The opening 12 is closed with a sealing lid 13. In this case, the tank body 11
When priming water is supplied to the circulation pump 5 through the connecting pipe 19, the water reaches the communication passage 20 side, but the bent portion 21 at the top of the communication passage 20 is higher than the water level to be supplied into the filtration tank 4. Since it is located above, the bent portion 21 of the communication passage 20 blocks outflow of water in the tank body 11.

Therefore, if the tank body 11 is filled with priming water, the circulation pump 5 and the connecting pipe 19 are filled with water to a predetermined water level in the tank body 11, and the discharge pipe 9 to the bath B
Since it does not flow out to the discharge side passage 48
It is not necessary to close the discharge part 8 at the lower end of the discharge pipe 9, and the priming water can be easily supplied to the circulation pump 5.

When the water has accumulated in the tank body 11 to a predetermined level, the sealing lid 13 is placed on the tank body 11 and the flange portion 28 of the sealing lid 13 is brought into contact with the rubber packing 26 of the tank body 11. Keep filtration tank 4 sealed.

For this reason, it is very easy to attach / detach the sealing lid 13 of the filtration tank 4, drain hot water from the tank body 11 and supply priming water. This is remarkably improved, and the cleaning or replacement of the filter medium 3 in the filter tank 4 can be carried out easily and quickly in a timely manner.

Since the check valve 22 is provided in the suction portion 6 at the lower end of the suction pipe 7, even if all the hot water in the filtration chamber 14 of the tank body 11 is drained when the filtration material 3 is washed or replaced, the inflow passage
Hot water is accumulated in 15 up to the height of the inflow port 17 at the upper end of the partition wall 16, and the hot water on the heater 18 side is not completely exhausted.

FIG. 5 illustrates another embodiment of the present invention, in which the suction pipe 7 of the suction side passage 47 is connected to the upper side of the tank main body 11,
The heater and the like are omitted. Also in this case, the same operation as described above can be performed.

[0046]

According to the present invention described in claim 1, the bathtub
The filtration tank 4 is arranged above the water surface in B, and the suction side passage 47 is provided in either the upper part or the lower part of the filtration tank 4.
After connecting the discharge side passages 48 to the other side, pumping the water in the bath B into the filtration tank 4 via the suction side passage 47 by the circulation pump 5, and after filtering the water by the filter medium 3 in the filtration tank 4. In the circulation purification device for a bath that is returned to the bathtub B via the discharge side passage 48, the passage connected to the lower side of the filtration tank 4 among the suction side passage 47 and the discharge side passage 48.
A communication passage 20 passing above the water level for storing water in the filtration tank 4 is provided in the filter 48, and a circulation pump 5 is provided between the communication passage 20 and the filtration tank 4, and the circulation pump 5 Is placed below the water level in the filtration tank 4, the water in the filtration tank 4 can be easily extracted, and priming water can be easily introduced from the filtration tank 4 to the circulation pump 5 side. Filtration media 3 in filtration tank 4
The operability when cleaning or replacing the same is remarkably improved.

According to the second aspect of the present invention, in the first aspect of the present invention, the suction side passage 47 is connected to the upper portion of the filtration tank 4 and the discharge side passage 48 is connected to the lower portion, and the discharge side passage is connected. Since the circulation pump 5 and the communication passage 20 are provided in the 48, the filtration tank 4 can be kept in a negative pressure state when the circulation pump 5 is operating, and water is drained when the filtration tank 4 is opened and priming water is supplied. Can be done easily.

[Brief description of drawings]

FIG. 1 is an overall schematic view showing an embodiment of the device of the present invention.

FIG. 2 is a sectional view of an essential part showing an embodiment of the device of the present invention.

FIG. 3 is a cross-sectional view of a mounting state showing an embodiment of the device of the present invention.

FIG. 4 is a front view of an operation unit of a control box showing an embodiment of the device of the present invention.

FIG. 5 is an overall schematic view showing another embodiment of the device of the present invention.

[Explanation of symbols]

 1 Circulation purification device 2 Device body 3 Filter medium 4 Filtration tank 5 Circulation pump 7 Suction pipe 9 Discharge pipe 11 Tank body 13 Sealing lid 14 Filtration chamber 15 Inflow passage 16 Partition wall 17 Inlet 18 Heater 20 Communication passage 22 Check valve 47 Suction side passage 48 Discharge side passage W Bathtub

Claims (2)

[Claims] 1. A filtration tank (4) is arranged above the water surface in a bath (B), and a suction side passage (47) is provided at either the upper part or the lower part of the filtration tank (4) and at the other. The discharge side passages (48) are connected to each other, and the water in the bathtub (B) is pumped into the filtration tank (4) via the suction side passageway (47) by the circulation pump (5). After filtering the water with the filter material (3),
In the circulation purification device for the bath, which is returned to the bathtub (B) via the discharge side passageway (48), the suction side passageway (47) and the discharge side passageway
A passage connected to the lower side of the filtration tank (4) among (48)
In (48), a communication passage (20) passing above the water level for accumulating water in the filtration tank (4) is provided, and this communication passage is also provided.
A bath characterized in that a circulation pump (5) is interposed between the filtration tank (4) and the filtration tank (4), and the circulation pump (5) is arranged below the water level in the filtration tank (4). Circulatory purification device for. 2. A suction side passage (47) is provided at an upper portion of the filtration tank (4).
Connect the discharge side passages (48) to the
8. The circulation purification device for a bath according to claim 1, wherein the circulation pump (5) and the communication passage (20) are provided in 8).