JPH0819713A - Circulating hot water 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, to downsize an apparatus as a whole without problems in the arrangement of a filtration tank, a circulating pump, and a heater, and to simplify and to shorten passages. CONSTITUTION:A bottomed tank main body 11 containing a filter medium 3, a filtration tank 4 having a sealing lid 13 which is fitted on the opening 12 of the tank main body 11 freely openably/closably, a circulating pump 5 for pumping up hot water W in a bathtub to the tank 4 through a suction side passage 47, and heater for keeping the temperatures of the hot water pumped up or for heating the water are installed in an apparatus main body 2 arranged above the water level of the bathtub. A discharge side passage 48 is connected with the bottom side of tank main body 11, the pump 5 is installed in the passage 48, the passage 47 is made to communicate with the upper side of the tank main body 11, and heater is fitted in the passage 47.

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 circulating hot water purifying device for a bath, in which water after being filtered by a filter material in the filtration tank is returned to a bath via a passage on the discharge side.

[0002]

2. Description of the Related Art As a circulating hot water purifying apparatus for a bath, conventionally, as described in Japanese Patent Laid-Open No. 63-28418, hot water in a bathtub is pumped into a filter tank through a suction side passage by a circulation pump, There is a so-called circulation type filter in which the hot water is returned to the bath via the discharge passage after being filtered by the filtering material in the filtration tank and kept or heated by the heater.

In this conventional device, a filtration tank is arranged in the upper part and a circulation pump is arranged in the lower part in the main body of the device.
The suction side passage is connected to the upper side of the tank body of the filtration tank, the discharge side passage is connected to the bottom side of the tank body, the circulation pump is installed in the middle of the suction side passage, and the heater is installed in the middle of the discharge side passage. ing.

[0004]

In the former former device,
Since the circulation pump is located in the middle of the suction side passage on the upstream side of the filtration tank and the water is pumped from this circulation pump into the closed filtration tank, the filtration tank is always in operation while the circulation pump is operating. Pressurized state. Therefore, when the airtight lid is attached to the opening of the tank body so as to be openable and closable, it is necessary to fix the airtight lid to the tank body with a plurality of screws so that water in the filtration tank does not leak to the outside.

Therefore, in the former device of the related art, the sealing structure of the tank body and the sealing lid of the filtration tank becomes very complicated, and at the same time, the screw operation is indispensable when cleaning or replacing the filter medium in the filtration tank. However, there is a problem that the operability is significantly reduced.

Therefore, if the circulation pump is installed in the middle of the discharge side passage, the circulation pump and the heater are installed in series in the discharge side passage, and the filtration tank, the circulation pump and the heater are arranged. In addition, it is difficult to reduce the size of the main body of the apparatus, and the discharge side passage is unnecessarily long.

That is, in view of the stability of the main body of the apparatus, it is necessary to dispose the filtration tank in the upper part and the circulation pump in the lower part in the main body of the apparatus. Therefore, in order to interpose the circulation pump and the heater in series in the discharge-side passage while ensuring this positional relationship, generally, the circulation pump and the heater should be arranged vertically or horizontally. become.

However, if the circulation pump and the heater are arranged vertically, the height of the main body of the apparatus becomes large, and the whole apparatus becomes vertically large. On the other hand, if the circulation pump and the heater are arranged on the left and right, it is necessary to bend the discharge side passage in a complicated manner, and the length of the discharge side passage itself becomes long, and at the same time, the flow path resistance in the discharge side passage increases. Will increase. Therefore, any of the arrangements has poor feasibility and cannot be adopted at all.

In view of the above-mentioned conventional problems, the present invention can facilitate the closed structure of the filtration tank, can easily open and close the sealing lid, and can improve the operability when cleaning or replacing the filter medium, and further, the filtration tank. The present invention provides a circulating hot water purifying device for a bath, which has no problem in the arrangement of a circulation pump and a heater, and which can reduce the size of the entire device and easily and shorten each passage.

[0010]

According to the present invention, a tank body 11 having a bottom and a filter medium 3 is placed in an apparatus body 2 arranged above a bath surface in a bath B and an opening 12 thereof. A filtration tank 4 having a closed lid 13 that is openably and closably attached to the
A circulating hot water purifying device for a bath provided with a circulation pump 5 for pumping the hot water W in B into the filtration tank 4 through the suction side passage 47 and a heater 18 for keeping the heated hot water or heating it. In the above, the circulation pump 5 is provided in the middle of the discharge side passage 48, and the heater 18 is provided in the middle of the suction side passage 47.

[0011]

[Operation] Since the circulation pump 5 is installed in the middle of the discharge side passage 48 on the downstream side of the filtration tank 4, the inside of the filtration tank 4 is always in a negative pressure state while the circulation pump 5 is operating, The sealing structure between the tank body 11 and the sealing lid 13 of the tank 4 can be simplified, and the sealing lid 13 can be easily opened and closed.

Further, since the heater 18 is arranged in the middle of the suction side passage 47 and the circulation pump 5 and the heater 18 are provided in separate passages 47 and 48, the filtration tank 4, the circulation pump 5 and There is no problem in the arrangement of the heater 18, and the passages 47 and 48 can be easily and shortened while the size of the entire device is reduced.

[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 apparatus body 2 is mounted on the corner of the bath B so that the suction part 6 and the discharge part 8 are immersed in the hot water W of the bath B.

The filter tank 4 is filled with a filter 10 for removing hair and the like, and a granular filter material 3 for filtering and purifying the dirt of the hot water drawn from the bath B. It is composed of a bottomed tank main body 11 in which the filter material 3 and the filter material 3 are freely inserted and removed, and a sealing lid 13 which is detachably mounted on the tank main body 11 so as to open and close the opening 12. Has been done.

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 centrifugal pump, or the like is used as the circulation pump 5, and any structure may be used.

The communication passage 20 discharges the hot water in the tank main body 11 into the bathtub B by the siphon effect when the sealing lid 13 of the filtration tank 4 is removed, and thereafter, the hot water in the tank main body 11 is used for the circulation pump 5 in the tank main body 11. This is to prevent the water from flowing out of the discharge pipe 9 when the priming water is supplied. The communication passage 20 is arranged on the side of the tank body 11 in the apparatus body 2 so that the bent portion 21 is on the upper side, and the top portion thereof, that is, the bent portion 21 is the water to be supplied into the filtration tank 4. It is located above the water level.

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.

As shown in FIG. 2, the apparatus main body 2 has a case-like shape with an open upper end, and an edge portion 25 on the upper end side of the tank main body 11 is attached to the opening side. An upper cover 30 is detachably fitted on the outer periphery of the upper portion of the device body 2.

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 denotes a water temperature sensor for preventing overheating, which is provided when the water temperature in the inflow passage 15 rises above 50 ° C.
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 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 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.

[0045]

EFFECTS OF THE INVENTION According to the present invention, the bottomed tank body 11 containing the filter medium 3 and the opening 12 are opened and closed in the apparatus body 2 arranged above the bath surface in the bathtub B. Filtration tank 4 with freely attached sealing lid 13 and hot water in bath B
In the circulating hot water purifier for a bath provided with a circulation pump 5 for pumping W into the filtration tank 4 through the suction side passage 47, and a heater 18 for keeping or heating the pumped hot water, the discharge side Since the circulation pump 5 is provided in the middle of the passage 48 and the heater 18 is provided in the middle of the suction side passage 47, the following advantages are obtained.

That is, the discharge side passage on the downstream side of the filtration tank 4
Circulation pump 5 is installed in the middle of 48, and circulation pump 5
Since the inside of the filtration tank 4 can be kept under a negative pressure at all times during operation of the
The sealing structure with 13 can be simplified, and the sealing lid 13 can be opened and closed easily, and the operability in cleaning or replacing the filter medium 3 is significantly improved.

Since the heater 18 is arranged in the middle of the suction side passage 47 and the circulation pump 5 and the heater 18 are provided in the separate passages 47 and 48, the filtration tank 4, the circulation pump 5 and There is no problem in the arrangement of the heater 18, and the passages 47 and 48 can be simply and shortened while downsizing the entire device, which simplifies the manufacture and does not cause the problem of flow path resistance. .

[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.

[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 (1)

[Claims] 1. A bottomed tank body (11) containing a filter medium (3) and its opening (1) in a device body (2) arranged above the surface of the bath in a bath (B). The filtration tank (4), which has a closed lid (13) that is freely opened and closed, and the hot water in the bathtub (B).
A bath provided with a circulation pump (5) for pumping (W) into the filtration tank (4) through the suction side passageway (47) and a heater (18) for keeping or heating the pumped hot water. In the circulating hot water purification device for a bath, a circulation pump (5) is installed in the middle of the discharge side passage (48), and a heater (18) is installed in the middle of the suction side passage (47). Circulating hot water purification device.