JPH0819712A - Circulating purification apparatus for bath - Google Patents

Abstract

PURPOSE:To make easily the closed structure of a filtration tank, to improve the operability of washing and replacement of a filter medium by facilitating the opening/closing of a sealing lid, and preventing surely the backflow of water to be filtered in a suction pump to a bathtub. CONSTITUTION:A bottomed tank main body 8 and a filtration tank 4 having a sealing lid 10 which is fitted on the opening 9 of the tank main body 8 freely openably/closably are arranged above the water level of a bathtub; water in the bathtub is pumped up into the tank 4 through a suction pipe 13 by a circulating pump 5; the water, after being filtered by the filter medium 7 in the tank 4, is returned to the bathtub. The pump 5 is connected to the bottom side of the tank main body 4 downstream from the tank 4, the pipe 13 is made to communicate with the upper side of the tank main body 8, and a check valve 32 for preventing bakflow is installed in the lower part of the pipe 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation for a bath, in which water in a bathtub is pumped into a filtration tank by a circulation pump, and water after being filtered by a filter material in the filtration tank is returned to the bath again. The present invention relates to a purification device.

[0002]

2. Description of the Related Art As a circulation purifying apparatus for a bath, as described in JP-A-63-28418, a circulating pump pumps water in a bath into a filtration tank, and a filtration material in the filtration tank is used. There is a so-called circulation type in which water after being filtered by the method is returned to the bath again. In the case of purifying water by passing it through the filter medium in the filter tank, the purifying ability is limited only by allowing the pumped water to naturally flow in the filter tank and passing the filter medium.

Therefore, conventionally, a filtration tank having a closed structure is constituted by a tank body and a sealing lid which is openably and closably attached to the opening of the tank body. The filtration tank is filled with a filtering material and is upstream of the filtration tank. A circulation pump is installed on the side, the water in the bathtub is pumped up by the circulation pump through the suction pipe, pressure-fed into the filtration tank, and the water is forcibly passed through the filtration material in the filtration tank, thus enhancing the purification capacity. ing.

[0004]

In the conventional purification device,
A circulation pump for pumping the water in the bathtub into the filtration tank is located upstream of the filtration tank.The circulation pump is used to pump water into the closed filtration tank. Since the tank is always under pressure, when attaching the sealing lid to the opening of the tank body so that it can be opened and closed freely, the sealing lid is attached to the tank body with multiple screws to prevent water in the filtration tank from leaking to the outside. Need to be fixed. For this reason, conventionally, there is a problem that the sealing structure of the filtration tank becomes very complicated, and at the same time, the screw operation is indispensable when cleaning or replacing the filtration material in the filtration tank, resulting in a significant decrease in operability. .

Further, in the conventional purification device, when the sealing lid of the filtration tank is opened, water on the upstream side of the filtration tank, that is,
There is a problem that all the water in the circulation pump and the suction pipe before the filtration flows back into the bathtub to contaminate the water in the bathtub.

In view of such conventional problems, the present invention can simplify the closed structure of the filtration tank, can easily open and close the closed lid, and can improve the operability in cleaning or exchanging the filtering medium, and further, the filtering tank. Even when the sealing lid of is opened, it is possible to reliably prevent the water in the suction pipe before filtration from flowing back into the bathtub, and even when the circulation pump is restarted after opening the sealing lid, the suction pipe side It is an object of the present invention to provide a circulation purification device for a bath, which can prevent the generation of abnormal noise due to a large amount of air entering the filtration tank.

[0007]

DISCLOSURE OF THE INVENTION The present invention is directed to a bottomed tank body in which a filtering material 7 is placed above the water surface in a bathtub 2.
8 and a filtration tank 4 having a closed lid 10 that is openably and closably attached to the opening 9 of the tank body 8 are arranged, and the water in the bath 2 is filtered by the circulation pump 5 through the suction pipe 13.
In the circulation purification device for a bath that pumps water into the bath 4 and filters the water with the filtering material 7 in the filtration tank 4 back to the bath 2, a circulation pump is provided downstream of the filtration tank 4.
5 is connected, and a check valve 32 for preventing backflow is provided below the suction pipe 13.

[0008]

[Function] Since the circulation pump 5 is connected to the downstream side of the filtration tank 4 and the inside of the filtration tank 4 is in a negative pressure state while the circulation pump 5 is operating, the tank body 8 and the sealing lid 10 of the filtration tank 4 are closed. In addition to facilitating the closed structure of the filter, the sealing lid 10 can be easily opened and closed, and the operability in cleaning or replacing the filter material 7 can be improved.

A check valve for preventing backflow is provided at the lower part of the suction pipe 13.
Since 32 is provided, it is possible to reliably prevent the water before filtration in the suction pipe 13 from flowing back into the bathtub 2 even when the closed lid 10 of the filtration tank 4 is opened. Bathtub 2
It does not pollute the water inside.

Moreover, since there is water in the suction pipe 13, even when the operation of the circulation pump 5 is restarted after opening the sealing lid 10,
A large amount of air does not enter the filtration tank 4 from the suction pipe 13 side, so that it is possible to prevent the generation of abnormal noise in the filtration tank 4 and to prevent the circulation pump 5 from idling and being unable to pump. Circulation pump that can also prevent
It is possible to restart the operation of 5.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 exemplify one embodiment of the present invention, FIG. 1 is a schematic diagram showing the configuration of the purification device 1, FIG. 2 is a sectional view showing the structure of the main part of the purification device 1, and FIG. 3 is a purification device. FIG. 3 is a cross-sectional view showing a use state in which 1 is attached to a bathtub 2 in a bathroom.

As shown in FIG. 1, the purifying device 1 is provided with a device body 3, and a filtration tank 4 and a circulation pump 5 which are vertically arranged in the device body 3. The device body 3 is mounted on the corner portion 6 of the bathtub 2 as shown in FIG. The filter tank 4 is for filling the filter material 7. It has a bottomed tank body 8 in which the filter material 7 can be freely inserted and removed, and the opening 9 is opened and closed on the tank body 8. It is composed of a sealing lid 10 which is detachably mounted.

As the filter material 7, for example, a fired product such as granular ceramic is generally used, and the filter material 7 purifies water pumped from the bath 2 to the filter tank 4. The filter material 7 is preferably placed in a dedicated container so that it can be easily put in and taken out from the tank body 8 of the filtration tank 4. On the upper side of the filter material 7, as shown in FIG. 2, a filter for removing hair and the like.
Twelve are provided.

A suction pipe 13 is connected to an upper side of a peripheral wall of the tank body 8, and a suction side of the circulation pump 5 is connected to a bottom portion of the tank body 8 via a connection pipe 14. The suction pipe 13 has a suction portion 15 at the lower end, and the suction portion 15 is immersed in the water in the bathtub 2. In the suction part 15, when the operation of the circulation pump 5 is stopped by washing the filter material 7 and the sealing lid 10 is opened, the water filled in the suction pipe 13 between the suction tank 15 and the filtration tank 4 is stored in the bath 2 A check valve is provided to prevent backflow into the interior.

The circulation pump 5 has a suction pipe 13 for sucking the water in the bathtub 2.
It is for pumping up into the filtration tank 4 through the suction unit 15 and is arranged below the filtration tank 4 inside the apparatus main body 3. And the discharge side of the circulation pump 5 is
Inverted U-shaped tube 16 bent into an inverted U-shape so that the water after being purified by the filtering material 7 of the filtering tank 4 is returned to the bath 2.
Is connected to the discharge pipe 17 via. A discharge part 18 is provided at the lower end of the discharge pipe 17, and the discharge part 18 is immersed in the water in the bathtub 2.

The discharge part 18 itself may be a simple opening in which the lower end of the discharge pipe 17 is cut, or a spray nozzle for spraying purified water. When a jet nozzle is provided in the discharge unit 18, an air pipe whose one end is open to the atmosphere is connected to the jet nozzle, and bubbles are bubbled together with purified water together with the purified water.
It may be a so-called jet injection type in which water is injected into the water.

A reciprocating pump, a spiral pump, etc. are used as the circulation pump 5, and any structure may be used. As shown in FIG. 2, the apparatus main body 3 has a case shape with an open upper end, and an edge portion 19 on the upper end side of the tank main body 8 is attached to the opening side. And this device body
An upper cover 20 is detachably fitted on the outer periphery of the upper part of 3.

As shown in FIG. 2, a rubber packing 21 is mounted on the upper surface of the edge portion 19 of the tank body 8 in the circumferential direction. The sealing lid 10 has a fitting portion 22 that fits in the opening 9 of the tank body 8 and a flange portion 23 formed outside the fitting portion 22, and the fitting portion 22 is formed in the tank body 8. 8 openings 9
The flange 23 is fitted to the edge of the tank body 8 when
The inside of the filtration tank 4 is kept in a hermetically sealed state by coming into contact with the rubber packing 21 on the upper side from above.

The sealing lid 10 is provided with a release valve 24 for releasing negative pressure. The release valve 24 is provided when the sealing lid 10 is removed from the tank body 8 and the filtration tank 4 is opened.
It is for releasing the negative pressure state inside and equalizing pressure. The release valve 24 is provided on the sealing lid 10 and the tank body.
It may be installed on the 8 side.

The inverted U-shaped pipe 16 discharges the water in the tank body 8 into the bathtub 2 by the siphon effect when the sealing lid 10 of the filtration tank 4 is removed, and when the water is stored in the tank body 8, This is to prevent the water from flowing out of the discharge pipe 17. The inverted U-shaped pipe 16 is arranged on the side of the tank body 8 in the apparatus body 3 so that the bent portion 25 is on the upper side, and the top portion, that is, the bent portion 25, should supply water into the filtration tank 4. It is located above the water level.

Next, the operation of the purifying device 1 will be described. When the circulation pump 5 is started with water in the tank body 8 of the filtration tank 4 and the opening 9 of the filtration tank 4 is sealed with the sealing lid 10, the water in the filtration tank 4 circulates through the connection pipe 14. Pumped by pump 5, circulation pump 5, reverse U
The water is discharged from the discharge portion 18 at the lower end of the discharge pipe 17 into the hot water of the bathtub 2 through the character pipe 16.

On the other hand, the water in the filtration tank 4 is circulated by the circulation pump 5
When suctioned by, the filtration tank 4 is in a hermetically sealed state with the flange portion 23 of the sealing lid 10 abutting on the rubber packing 21,
Since the inside of the filtration tank 4 has a negative pressure, the water in the bathtub 2 is pumped from the suction section 15 through the suction pipe 13 into the filtration tank 4.

The water pumped into the filtration tank 4 first enters the upper part of the filtration tank 4, and then the circulation pump 5
Is passed through the filter material 7 from the top to the bottom,
It is returned to the water in the bathtub 2 via the connection pipe 14, the circulation pump 5, the inverted U-shaped pipe 16, the discharge pipe 17, and the discharge portion 18. And
When the water in the filtration tank 4 passes through the filter material 7 from the top to the bottom, the filter material 7 removes dirt and the like of the water to purify the water.

Therefore, if the circulation pump 5 is in the operating state in this way, the water in the bath 2 is filtered by the filtration tank 4 and the bath 2.
The water in the bath 2 can be sequentially purified by the filter media 7 in the filtration tank 4 by circulating the water between the water and the water.

The circulation pump 5 is located downstream of the filtration tank 4, and the water in the bath tank 2 is pumped up into the filtration tank 4 by sucking the water in the filtration tank 4 with this circulation pump 5. Filtration tank when pump 5 is running
The inside of 4 is always under negative pressure. Therefore, the sealing lid 10 can be placed on the tank body 8 and the space between the tank body 8 and the sealing lid 10 can be sufficiently sealed with a rubber packing 21. The sealed structure can be very simple.

When the filter material 7 in the filtration tank 4 is washed or replaced, first, the release valve 24 is opened to release the negative pressure state in the filtration tank 4. That is, even when 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 10
Is in close contact with the rubber packing 21 on the tank body 8 side, so open the release valve 24 to open the inside of the filtration tank 4 to the atmosphere,
Release the negative pressure condition in the filtration tank 4. Then, since the inside and outside of the filtration tank 4 become even, the sealing lid 10 can be easily removed, and the sealing lid 10 can be easily removed from the tank body 8.

When the release valve 24 is opened or the sealing lid 10 is removed to open it to the atmosphere, the water in the tank body 8 of the filtration tank 4 is sucked by the siphon effect of the inverted U-shaped tube 16,
It is discharged from the discharge part 18 to the bath 2 through the connecting pipe 14, the circulation pump 5, the inverted U-shaped pipe 16, and the discharge pipe 17.

However, since the check valve 32 is provided in the suction portion 15 at the lower end of the suction pipe 13, the water does not flow back into the bathtub 2 and flow out, and the water remains in the suction pipe 13. is there.
Therefore, even if the sealing lid 10 of the filtration tank 4 is opened, the suction unit
There is no problem that the unfiltered water in 13 flows out into the bathtub 2 and pollutes the water in the bathtub 2.

After draining water from the tank body 8, the filter material 7 is taken out and washed or replaced. After washing or replacing the filter material 7, priming water is supplied into the tank body 8 of the filtration tank 4, the sealing lid 10 is placed on the tank body 8, and the opening 9 is closed with the sealing lid 10 for circulation. The operation of pump 5 should be restarted.

According to this embodiment, the operation of attaching and detaching the closed lid 10 of the filtration tank 4 is very easy, and the operability at the time of cleaning or replacement of the filter material 7 is remarkably improved. For this reason,
Depending on the dirt condition of 7 the filter material 7
Can be washed or replaced.

When the operation of the circulation pump 5 is restarted, if the water in the suction pipe 13 is completely drained, the air in the suction pipe 13 enters the filtration tank 4 by the suction action of the circulation pump 5, and after that, Water drawn from bath 2 is filtered tank
Because it enters inside 4, when the air is changed to water, the filtration tank
Abnormal noise may occur within 4. In addition, when a large amount of water enters the filtration tank 4 from the suction pipe 13 side and the water is sucked into the circulation pump 5 side, the circulation pump 5 may idle and cannot be pumped up in some cases.

However, in this embodiment, since the check valve 32 is provided at the lower end of the suction pipe 13 and the suction pipe 13 is filled with water, even when the circulation pump is restarted, the filtration tank 4
There is no large amount of air inside. Therefore, it is possible to prevent generation of abnormal noise in the filtration tank 4 and prevent the circulation pump 5 from idling and being unable to pump.
It is possible to restart the operation of the circulation pump 5 smoothly and reliably.

The purifier 1 is installed on the corner 6 of the bath 2 as shown in FIG. 3, for example. With this configuration, the suction pipe 13 and the discharge pipe extending downward from the device body 3
The length of 17 can be shortened and the decrease in water temperature can be reduced. 4 and 5 illustrate another embodiment of the present invention, which is a hot water system having a function of retaining or heating hot water circulating between the bath 2 and the bath.

In FIG. 4, the inside of the filtration tank 4 is provided with a filtration chamber 27 and an inflow passage 28 on one side thereof.
A partition wall 29 is provided to divide into and. Partition wall 29
The upper end of the partition wall 29 is lower than the peripheral wall of the tank body 8, and the upper end side of the partition wall 29 serves as an inflow port 31 communicating with the filtration chamber 27 from the inflow passage 28. The sealing lid 10 is detachably attached to the opening 9 of the tank body 8 so as to cover the filtration chamber 27 and the inflow passage 28 from above.

A suction pipe 13 is connected to the inflow passage 28 from the lower surface side of the filtration tank 4 so as to communicate with the lower portion of the inflow passage 28, and a heater 30 is provided inside.
The heater 30 is for keeping or heating the hot water pumped from the bathtub 2, and is provided on the surface of the water in the filtration tank 4, that is, below the inlet 31 at the upper end of the partition wall 29.
It is arranged vertically inside 28 and is fixed to the bottom side of filtration tank 4.

A check valve 32 for preventing backflow is provided in the suction portion 15 at the lower end of the suction pipe 13. The discharge unit 18 is a jet nozzle type that jets jets by mixing bubbles into water discharged into the bathtub 2. Discharge pipe connecting the inverted U-shaped pipe 16 and the discharge part 18
An air pipe 33 is connected to the air pipe 17, and air is sent from the air pipe 33 to the discharge unit 18. The air pipe 33 has a solenoid valve 34, and the jet injection and the normal drainage can be switched by opening and closing the solenoid valve 34.

Reference numeral 35 is a control box, which is the main body 3 of the apparatus.
Built in. The control box 35 controls the on / off switching of the heater 30 and the temperature adjustment, and also controls the operation / stop of the circulation pump 5 and the solenoid valve 34.
It is for controlling the opening and closing of the.

A water temperature sensor 36 detects the hot water temperature in the upper part of the inflow passage 28, compares the output with the set temperature in the control box 35, and controls the heater 30 by the control box 35 according to the comparison result. The hot water temperature in the bathtub 2 is adjusted to the set temperature by controlling the energization ratio of.

Reference numeral 37 is a water temperature sensor for preventing overheating, and when the temperature of the hot water in the inflow passage 28 rises to 50 ° C. or higher,
An output from the water temperature sensor 37 causes the control box 35 to stop energizing the heater 30.

Reference numeral 38 is a temperature fuse provided in the circulation pump 5, 39 is a temperature fuse provided in the inflow passage 28, which is a bathtub.
2 In order to protect the entire equipment when the temperature of the hot water in the tank reaches a high temperature without depending on the heater 30, the circulation pump 5 and the inflow passage
When the temperature of the hot water in 28 is 55 ° C. or higher, the thermal fuses 38 and 39 are activated to stop all controls via the control box 35.

Reference numeral 40 is a seismic sensor that operates when the device body 3 may tilt and fall, and 41 is an earth leakage breaker that operates when a leakage occurs in a wiring portion inside the device body 3. Reference numeral 42 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 the water flow sensor 42 and the discharge amount of the circulation pump 5 becomes extremely small (normal 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 material 7 (normal 5
A warning sound is emitted to notify the cleaning of the filter material 7 (below).

The operating portion of the control box 35 is the fifth
It is configured as shown in the figure and is provided on the entire surface of the apparatus main body 3. 43 is a main power button for operating / stopping the circulation pump 5, and 44 is a heat retaining button for turning on / off the heater 30. 45 is an UP button for hot water temperature setting, 46 is a DOWN button for hot water temperature setting, 47 is a setting display lamp, and each button 45, 4
By operating 6, the set hot water temperature can be adjusted appropriately, and the set temperature is displayed on the setting display lamp 47.
A temperature display lamp 48 is for displaying the hot water temperature detected by the water temperature sensor 36. In addition, each indicator lamp 47,4
Step 8 is performed by turning on a light emitting diode (LED).

Reference numeral 49 is a jet button. When the jet button 49 is operated, the electromagnetic valve 34 is opened and closed, and when the electromagnetic valve 34 is opened, a jet jet containing bubbles is ejected from the discharge section 18.

In the purification apparatus 1 of this embodiment, the circulation pump
When 5 is operated, the hot water in the bathtub 2 moves from the suction part 15 to the suction pipe 13
Then, it enters the inflow passage 28 and is pumped up into the filtration chamber 27 of the filtration tank 4 from the inflow port 31 at the upper end of the inflow passage 28. Then, the water is kept warm or heated by the heater 30 while passing through the inflow passage 28 from the bottom to the top. This embodiment also has the same advantages as those of the above embodiment.

[0045]

According to the present invention, the bottomed tank main body 8 containing the filtering material 7 and the opening 9 of the tank main body 8 are openably and closably mounted above the water surface in the bathtub 2. A filtration tank 4 having a closed lid 10 is placed, and the water in the bathtub 2 is pumped into the filtration tank 4 through the suction pipe 13 by the circulation pump 5 and filtered by the filtration material 7 in the filtration tank 4. In the circulation purification device for the bath that returns water to the bathtub 2, since the circulation pump 5 is connected to the downstream side of the filtration tank 4, the tank body 8 and the sealing lid 10 of the filtration tank 4 are connected.
There is an advantage that the airtight structure can be simplified, the airtight lid 10 can be easily opened and closed, and the operability at the time of cleaning or replacement of the filter medium 7 can be improved.

A check valve for preventing backflow is provided under the suction pipe 13.
Since 32 is provided, it is possible to reliably prevent the water before filtration in the suction pipe 13 from flowing back into the bathtub 2 even when the closed lid 10 of the filtration tank 4 is opened. Bathtub 2
It does not pollute the water inside.

Moreover, since there is water in the suction pipe 13, even when the operation of the circulation pump 5 is restarted after opening the sealing lid 10,
A large amount of air does not enter the filtration tank 4 from the suction pipe 13 side, so that it is possible to prevent the generation of abnormal noise in the filtration tank 4 and to prevent the circulation pump 5 from idling and being unable to pump. Circulation pump that can also prevent
It is possible to restart the operation of 5.

[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 schematic view showing another embodiment of the device of the present invention.

FIG. 5 is a front view of an operating portion of a control box showing another embodiment of the device of the present invention.

[Explanation of symbols]

 1 Purification device 2 Bath 3 Device body 4 Filtration tank 5 Circulation pump 7 Filtration material 8 Tank body 10 Sealing lid 13 Suction pipe 16 Reverse U-shaped pipe 17 Discharge pipe 24 Release valve 28 Inflow passage 29 Partition wall 30 Heater 32 Check valve

Claims (1)

[Claims] 1. A filter medium is provided above the water surface in the bathtub (2).
A bottomed tank body (8) containing (7) and a lid (10) that is openably and closably attached to the opening (9) of the tank body (8).
A filtration tank (4) having a filter tank (4) is installed, and the water in the bathtub (2) is filtered by the circulation pump (5) through the suction pipe (13).
In the circulation purification device for the bath, in which water after being pumped inside and filtered by the filter material (7) in this filter tank (4) is returned to the bathtub (2), it is placed on the downstream side of the filter tank (4). A circulation purification device for a bath, characterized in that a circulation pump (5) is connected to the suction pipe (13) and a check valve (32) for preventing backflow is provided under the suction pipe (13).