JPH08332318A - Bathing water purifying apparatus - Google Patents

Abstract

PURPOSE: To eliminate the operation of the stirrer of a filter and the opening of the openable lid thereof in such a state that a washing pump is operated. CONSTITUTION: This bathing water purifying apparatus has a circulating passage connecting a suction port 1, a circulating pump 2 and an emitting port 3 and the circulating pump 2 is operated to circulating bathing water in a bathtub to purify the same by the filter 4 arranged to the circulating passage. The filter 4 is arranged in a case 23 to which a case lid 5 is attached in a freely openable and closable state and the stirrer 41 manually stirring the filter material 40 charged in the filter 4 is provided to the filter 4. The changeover valve 37 changing over the connection of the filter 4 and the emitting port 3 or the filter 4 and the drain valve 38 discharging the bathing water in the filter 4 is provided. A lid opening and closing detection means 11 detecting the opening of the case lid 5 to operate the circulating pump 2 and changing over the connection of the filter 4 to the drain port 38 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purifying device which purifies bath water in a bath to enable long-term use of bath water.

[0002]

2. Description of the Related Art In recent years, a bath water purifying device has been provided to enable bathing for 24 hours in a domestic bath. FIG. 11 shows an example of a bath water purifying apparatus developed by the present application, which is a suction unit 21 having a suction port 1 and a discharge port 3 and a circulation path connecting the suction port 1 and the discharge port 3. And a filter 4 installed in the circulation path
And a container body 23 that contains and. In this case, the circulation pump 2 in the body 23 is operated to suck the bath water in the bathtub from the suction port 1 and discharge it from the discharge port 3 to circulate the water. It is designed to purify bath water.

The filter 4 is formed by filling a granular filter medium 40, and when it is used for a long period of time, dirt is deposited on the filter medium 40 and the filtering performance of the filter medium 40 deteriorates. It is necessary to wash the filter medium 40 in the unit 4. In cleaning the filter medium 40, first, the operation of the circulation pump 2 is stopped so that water does not flow, and then the body 23
The container lid 5 is removed to open the upper surface of the container 23, and the handle 6 provided on the upper surface of the filter 4 is rotated to rotate the stirrer 41 installed in the filter 4 to rotate the stirrer 4
The filter material 40 is stirred by the stirring blade 43 of No. 1 to remove dirt
Can be done by separating from. Next, the switching valve 37 formed of an electromagnetic valve is connected to the discharge port 3
After switching from the side to the drain port 38 side, the circulation pump 2 is operated to suck the bath water in the bathtub from the suction port 1 and send it to the filter 4, and the dirt separated from the filter medium 40 is washed away with this bath water. It is discharged from the drain port 38. When the rinsing for washing away the dirt is completed in this way, the switching valve 37 is switched from the drain port 38 side to the discharge port 3 side,
It is designed to return to normal operation for purifying bath water.

The filter medium 40 in the filter 4 needs to be replaced after a certain period of time. To replace the filter medium 40, the body cover 5 is removed to open the upper surface of the body 23, and then the filter medium 40 is filtered. The opening / closing lid 8 attached to the opening 7 on the upper surface of the filter 4 is removed, the filter material 40 in the filter 4 is taken out from the opening 7, and a new filter 40 is packed in the filter 4. This opening / closing lid 8 is attached to the opening 7 of the filter 4 in a screwdriver manner, and by screwing the opening / closing lid 8 with a jig,
It can be attached to or removed from the opening 7.

[0005]

However, in cleaning the inside of the filter 4 as described above, the agitator 41 is rotated by the handle 6 while forgetting to stop the operation of the cleaning pump 2, and the filter is filtered. When the cleaning operation of stirring the filter medium 40 in 4 is performed, there is a problem that dirt separated from the filter medium 40 by stirring may be discharged from the discharge port 3 into the bath together with circulating bath water. When the opening / closing lid 8 of the filter 4 is opened in order to replace the filter medium 40 in the filter 4 without forgetting to stop the operation of the washing pump 2, the opening / closing lid 8 is opened by the water pressure of the circulation pump 2. There was a risk of flying, and there was a problem with safety.

Further, the handle 6 is manually turned to rotate the stirrer 4.
When the filter medium 40 is stirred and washed by rotating 1, the stirring speed of the stirrer 41 is insufficient, the stirring of the filter medium 40 becomes insufficient, and the cleaning of the filter medium 40 becomes insufficient. Further, a jig for opening and closing the opening / closing lid 8 of the filter 4 is required as an accessory, which causes a problem that the number of parts increases and the cost increases.

The present invention has been made in view of the above points, and purifies the bath water without operating the agitator of the filter or opening the opening / closing lid of the filter while the cleaning pump is operating. A separate jig for opening and closing the opening / closing lid of the filter for the purpose of providing an apparatus and a bath water purifying apparatus in which washing in the filter does not become insufficient. It is an object of the present invention to provide a bath water purifying device that eliminates the need for.

[0008]

Therefore, the bath water purifying apparatus according to claim 1 of the present invention has a circulation path connecting the suction port 1, the circulation pump 2 and the discharge port 3, and operates the circulation pump 2. The bath water in the bathtub is circulated by sucking it from the suction port 1 and discharging it from the discharge port 3, and at the same time, it can be opened and closed in the bath water purifying device for purifying the bath water by the filter 4 arranged in the circulation path. The filter 4 is disposed in the container 23 having the container lid 5 attached to the filter 4, and the filter 4 is provided with a stirrer 41 for manually stirring the filter medium 40 filled in the filter 4. A switching valve 37 for switching between connection with the discharge port 3 or connection between the filter 4 and the drain port 38 for discharging bath water in the filter 4 is provided, and it is detected that the container lid 5 is opened. To operate the circulation pump 2. It is to characterized in that it comprises a cover opening and closing detecting unit 11 which causes locked switches the connection of the filter 4 to the drain port 38 side.

The invention of claim 2 has a circulation path connecting the suction port 1, the circulation pump 2, and the discharge port 3, and the circulation pump 2 is operated to suck the bath water in the bathtub from the suction port 1. In a bath water purifying device that circulates by discharging from a discharge port 3 and purifies bath water by a filter 4 arranged in the above-mentioned circulation path, the water is filtered into a container 23 with a container lid 5 openably and closably attached. The filter 4 is provided, and a stirrer 41 for manually stirring the filter medium 40 filled in the filter 4 is provided in the filter 4, and the rotation detector 12 for detecting the rotation of the stirrer 40 is provided. To do.

Further, the invention of claim 3 has a circulation path connecting the suction port 1, the circulation pump 2 and the discharge port 3, and the circulation pump 2 is operated to suck the bath water in the bathtub from the suction port 1. In a bath water purifying device that circulates by discharging from a discharge port 3 and purifies bath water by a filter 4 arranged in the above-mentioned circulation path, the water is filtered into a container 23 with a container lid 5 openably and closably attached. The filter 4 is provided with a stirrer 41 for manually stirring the filter medium 40 filled in the filter 4, and the opening / closing lid 8 for closing the opening 7 provided in the filter 4 is screwed. The handle 6 for mounting and rotating the stirrer 41 is provided on the outer surface of the opening / closing lid 8, and the opening / closing lid 8 is provided with an engaging portion 9 that engages with the handle 6 and rotates the opening / closing lid 8 as the handle 6 rotates. Characterized by It is intended to.

[0011]

According to the first aspect of the present invention, the lid opening / closing detecting means 1 detects the opening of the container lid 5 to stop the operation of the circulation pump 2 and switches the connection of the filter 4 to the drain port 38 side.
1 is provided, and the stirrer 41 is operated to wash the inside of the filter 4, and the opening / closing lid 8 of the filter 4 is opened to replace the filter material 40 of the filter 4. Prior to the operation, when the vessel lid 5 is opened, the circulation pump 2 is automatically stopped and the connection of the filter 4 is automatically switched to the drain port 38 side.

The invention according to claim 2 is characterized in that the rotation detecting means 12 for detecting the rotation of the stirrer 41 is provided, and the rotation speed is detected based on the detection of the rotation of the stirrer 41 by the rotation detecting means 12. Can be detected to know whether the inside of the filter 4 has been sufficiently cleaned. Further claim 3
Is an opening / closing lid 8 for closing the opening 7 provided in the filter 4.
Is installed in a screwdriver type, and a handle 6 for rotating the stirrer 41 is provided on the outer surface of the opening / closing lid 8, and the handle 6
It is characterized in that an engaging portion 9 that engages with the handle 6 to rotate the opening / closing lid 8 as the handle 6 rotates is provided on the opening / closing lid 8. The open / close lid 8 can be opened and closed by rotating the open / close lid 8 by rotating it while being engaged with 9.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. FIG. 1 is a schematic sectional view of a bath water purifying apparatus that can be retrofitted to an existing bathtub. The invention of claim 1 will be described based on the embodiment of FIG. The bath water purifying device is composed of a container 23 having a heater 22 formed of a sheathed heater having a small capacity (about 600 W) and a suction unit 21 having a suction port 1 and a discharge port 3. The inside of the body 23 is partitioned into a pump chamber 24, a heater chamber 25, and a filtration chamber 26. The circulation pump 2 is provided in the pump chamber 24, and the heater 22 is provided in the heater chamber 25.

A filtration tank 13 is housed in the filtration chamber 26, and the filtration chamber 26 and the filtration tank 13 form a filter 4. Filter tank 13 of filter 4
A filter medium 40 is filled inside, and the filter medium 40 can be stirred by a stirrer 41 provided in the filter tank 13 in the filter 4. The stirrer 41 is formed by a vertical shaft 42 and stirring blades 43 provided on the shaft 42, and an opening / closing lid 8 is detachably attached to the opening 7 on the upper surface of the filter 4 and stirring is provided on the opening / closing lid 8. Axis 44 is axis 4
It is adapted to be detachably connected to the upper end of 2.

FIG. 2 shows an example of the opening / closing lid 8. A stirring shaft 44 is provided in the central portion of the opening / closing lid 8 so as to penetrate in the vertical direction, and the stirring shaft 44 is moved upward by a shaft stopper 45. It is designed to be retained. Further, the base of the handle 6 is fixed to the upper end of the stirring shaft 44,
A knob 46 is provided at the tip of the handle 6. In FIG. 2, 47 is a packing.

The container body 23 is formed in a container shape having an open upper surface, and the container lid 5 is detachably attached to the opening of the upper surface by a fitting method or the like. By opening the vessel lid 5, the filter 4 is exposed at the opening on the upper surface of the vessel 23, and the handle 6 on the upper surface of the opening / closing lid 8 of the filter 4 is operated to operate the agitator 41.
Can be rotated. And the body 23
A reed switch 15 is attached to the upper opening of the above, and a magnet 16 is attached to the lower surface of the vessel lid 5 at a position corresponding to the reed switch 15. When the cover of the body 23 is attached to the opening of the upper surface of the body 23, the magnet 16 approaches the reed switch 15, so that the reed switch 15 detects the proximity of the magnet 16 and the body 23 is covered. 5 can be detected, and when the body lid 5 is removed from the opening on the upper surface of the body 23, the magnet 16 is separated from the reed switch 15. It is possible to detect and detect that the body lid 5 is removed from the body 23.
Therefore, in this embodiment, the reed switch 15 and the magnet 16 are
The lid opening / closing detection means 11 is constituted by the above.
It goes without saying that the lid opening / closing detection means 11 is not limited to the one formed by the reed switch 15 and the magnet 16, but instead of the reed switch 15 and the magnet 16, the lid opening / closing detection means 11 is formed by a limit switch and a protrusion. You can also

Further, the suction unit 21 has a suction port 1 having a filter 30 and a check valve 31, an air mixing chamber 39 connected to the air intake port 32 via an air pipe 33, and is of a jet jet type. The formed discharge port 3 is provided, the suction port 1 is connected to the pump chamber 24 via the inflow pipe 34, and the discharge port 3 is connected to the filtration chamber 26 via the outflow pipe 35. Outflow pipe 3
5 is provided with a strainer 36, and a switching valve 37 formed by an electromagnetic valve is provided between the strainer 36 and the filtration chamber 26. The switching valve 37 is for switching the flow path between the drain port 38 formed in the body 23 and the discharge port 3, and is in a state in which the filter 4 and the discharge port 3 are connected, the filter 4 and the drain port 38. It is possible to switch to either of the states in which and are connected. The discharge port 3 is provided on the front surface of the suction unit 21, the suction port 1 is provided on the lower surface of the suction unit 21, and the suction unit 21 is attached to the inner wall surface of the bathtub so as to be immersed in the bath water. The body 23 is mounted on the flange of the bathtub.

In the bath water purifying apparatus formed as described above, the switching valve 37 is oriented to connect the filter 4 and the discharge port 3 during the normal purifying operation, and the operation switch 18 is used. When the circulation pump 2 is driven by operating the, the bath water in the bathtub is sucked from the suction port 1, is sent to the filter 4 through the heater chamber 25, and is filtered by the filter medium 40 in the filter tank 13 of the filter 4. After being purified, the gas is discharged from the discharge port 3 into the bath through the switching valve 37. In this way, the bath water in the bathtub is constantly sucked through the suction port 1 and filtered by the filter 4, and then the bath water is circulated so as to be discharged from the discharge port 3 into the bathtub. It can be maintained in a purified state, and while the heater 22 is energized, the temperature of the bath water is prevented from lowering and the bath water can be kept at a constant temperature for 24 hours of bathing. Is something that can be done.

When used for a long period of time, dirt is deposited on the filter medium 40 in the filter 4 and the filtration performance of the filter medium 40 deteriorates. Therefore, it is necessary to wash the filter medium 40 regularly. In addition, pressure sensors 59, 6 are provided before and after the circulation pump 2.
0 is arranged, and it is detected that the filter medium 40 in the filter 4 is clogged with dirt based on the increase in the detection pressure of the pressure sensor 59, and the filter 30 of the filter 30 is detected based on the decrease in the detection pressure of the pressure sensor 60. It is designed to detect clogging.

The operation of cleaning the filter medium 40 will be described with reference to the flow chart of FIG. First, when the body lid 5 is opened, the opening / closing detection means 11 including the reed switch 15 and the magnet 16 detects that the body lid 5 is opened. Then, when the opening of the vessel lid 5 is detected during the normal operation of purifying the bath water, the operation of the circulation pump 2 is stopped and the switching valve 37 is operated to cause the filter 4 to discharge. 3 is switched to the direction in which the filter 4 is connected to the drain port 38. Further, when the circulation pump 2 is not operating and is not operating normally, the direction of the switching valve 37 is fixed to the direction in which the filter 4 is connected to the drain port 38. These operations are performed under the control of the control circuit 50 such as a microcomputer.

After the container lid 5 is thus opened to expose the filter 4 to the opening on the upper surface of the container 23, the handle 6 on the upper surface of the opening / closing lid 8 of the filter 4 is operated to rotate the agitator 41. By doing so, the filter medium 40 can be washed by stirring the filter medium 40 and separating the dirt adhering to the filter medium 40 from the filter medium 40. When the container lid 5 is opened for cleaning in this way, the operation of the circulation pump 2 is stopped as described above, and the direction of the switching valve 37 is changed to the drain port 38.
Since it is switched to the side, the dirt separated from the filter medium 40 is not discharged from the discharge port 3 into the bath by the bath water. Further, even when the opening / closing lid 8 of the filter 4 is opened and the filter medium 40 is replaced, when the container lid 5 is opened, the operation of the circulation pump 2 is stopped as described above, so that the circulation pump 2 is operating. The opening / closing lid 8 does not fly off due to water pressure as in the case where the opening / closing lid 8 is sometimes opened, and the safety can be improved.

Further, after the device body cap 5 is opened, a predetermined time (t ₁ hour) has elapsed since the cleaning in the t ₁ hour is expected to have been performed, after the elapse of t ₁ hour, vessel It waits until the lid opening / closing detection means 11 detects that the body lid 5 is closed. When it is detected that the body lid 5 is closed, the circulation pump 2 is operated for a predetermined time (t ₃ hours), the bath water in the bathtub is sucked from the suction port 1 and separated from the filter medium 40. Drain port 3 with this bath water
It is controlled by the control circuit so that water is discharged from 8. When the lid opening / closing detection means 11 detects that the vessel lid 5 is closed in this way, the dirt in the filter 4 is drained together with the bath water for a predetermined time, and before this, the vessel lid 5 is opened. The initial state of is reset so that the reset operation becomes unnecessary.

When a predetermined time (t ₂ hours) elapses without closing the vessel lid 5 after the lapse of t ₁ hour, it is expected that the cleaning has already been completed. It is operated for a time (t ₃ hours), and the control circuit is controlled to discharge the dirt separated from the filter medium 40 from the drain port 38. Then, after this, the initial state before opening the body lid 5 is restored.

If the body lid 5 is closed within a predetermined time (for example, 2 seconds) even after the lid 5 is opened, the agitator 41 is not rotated to perform the washing operation. Since it is expected that the body lid 5 is closed, the operation of returning the direction of the switching valve 37 to the discharge port 3 side is started so as to return to the state before opening the body lid 5. At this time, the body lid 5 may be opened again until the direction of the switching valve 37 returns to the state before the opening of the body lid 5, so that the lid opening / closing detection means 11 detects the movement of the body lid 5 in the meantime. The open / close signal is ignored. After the direction of the switching valve 37 returns, when the lid opening / closing detection means 11 detects that the body lid 5 is closed, the state returns to the initial state before opening the body lid 5. Further, after the direction of the switching valve 37 returns to the discharge port 3 side, if the lid opening / closing detection means 11 does not detect that the body lid 5 is closed for a predetermined time (for example, 2 seconds), the body lid 5 is opened again. Since there is a possibility that the stirrer 41 is rotated and the washing operation is performed, the switching valve 37 is switched to the drain port 38 side, and after that, the drainage is performed for t ₃ hours as described above, and then the vessel lid 5 Returns to the initial state before opening.

FIG. 5 shows an embodiment of the invention of claim 2, which is a rotation detecting means 1 for detecting the rotation of the stirrer 41.
2 is provided. In the embodiment of FIG. 5, as shown in FIG. 6, a protrusion 52 is provided on the lower surface of the tip of the handle 6 for rotating the stirrer 41, a magnet 53 is embedded in the protrusion 52, and the handle 6 is rotated. When this magnet 5
A reed switch 54 is provided on the body 23 at a position on the rotation locus of No. 3, and the reed switch 54 and the magnet 53 constitute the rotation detecting means 12.
That is, when the handle 6 is manually rotated to rotate the stirrer 41, the magnet 5 is rotated every time the handle 6 makes one rotation.
3 moves closer to and away from the reed switch 54, the magnet 5
Reed switch 5 that is activated by the proximity of 3
By detecting the signal of No. 4, it is possible to detect that the handle 6 is turned to rotate the stirrer 41. Further, when the handle 6 is rotated once, the stirrer 41 is also rotated once. Therefore, the rotation speed of the stirrer 40 is detected by counting the number of detection signals when the magnet 16 approaches the reed switch 15 by the control circuit 50. You can also

Needless to say, the rotation detecting means 12 is not limited to the one formed by the reed switch 54 and the magnet 53, and for example, the limit switch 61 and the handle 6 provided on the body 23 as shown in FIG. 7A. The rotation detecting means 12 is constituted by the projection 62 provided on the lower surface of the tip of the
It is also possible to detect the rotation of the handle 6 as well as the rotation speed by pressing the actuator 63 covered with the waterproof sheet 66 of the limit switch 61 by the protrusion 62 every time the rotation is performed. Further, as shown in FIG. 7B, the body 2
3 and the magnet 65 provided on the protrusion 52 on the lower surface of the tip of the handle 6 constitute the rotation detecting means 12, and when the magnet 65 approaches or separates from the hall element 64, The rotation of the handle 6 may be detected as well as the number of rotations.

The embodiment of FIG. 5 is formed to have substantially the same structure as that of the embodiment of FIG. 1 except for the structure of the rotation detecting means 12.
The operation for purifying the bath water in the bathtub can be performed in the same manner as described above. Next, the operation of cleaning the filter medium 40 of the filter 4 in the embodiment of FIG. 5 will be described with reference to the flowchart of FIG. First, the operation of the circulation pump 2 is stopped, the vessel lid 5 is opened to expose the filter 4 to the opening on the upper surface of the vessel 23, and then the handle 6 on the upper surface of the opening / closing lid 8 of the filter 4 is operated. Then, by rotating the stirrer 41, the filter medium 40 is agitated, and the dirt adhering to the filter medium 40 can be separated from the filter medium 40 for cleaning.

When the handle 6 is turned in this manner, the rotation thereof is detected by the rotation detecting means 12 including the reed switch 54 and the magnet 53 as described above, and the control circuit 50 is operated.
The number of rotations is counted by. When the number of rotations of the handle 6 reaches a predetermined number of times (n times) set in advance, it is determined that the number of times of stirring of the filter medium 40 by the stirrer 41 is sufficient, and the control circuit 50 issues a command to notify the buzzer 14 or the like.
Activates and prompts the end of stirring. Therefore, it is not necessary to count the number of times when manually turning the handle 6, and the agitator 4
1, the filter medium 40 can be sufficiently washed, and the stirrer 41 is not rotated more than necessary, and the washing operation can be completed in the minimum necessary time.

When the handle 6 is rotated and the filter medium 40 is stirred and washed by the stirrer 41, the rotation of the handle 6 is detected by the rotation detecting means 12 as described above. However, when the stirring and washing is completed, the handle 6 is not rotated. The rotation of the handle 6 is no longer detected by the rotation detecting means 12. Therefore, when the preset predetermined time (t time) elapses after the rotation detection means 12 finally outputs the signal for detecting the rotation of the handle 6 to the control circuit 50, the switching valve 37 is controlled by the control circuit 50. Is switched to the drain port 38 side and the circulation pump 2 is preset for a predetermined time (t ₄
When the bath water in the bath is sucked through the suction port 1 and the dirt separated by washing the filter medium 40 is discharged from the drain port 38 together with the bath water.
After stirring and washing the filter medium 40, forgetting to drain the dirt in the filter 4 from the drain port 38 and performing a normal operation to purify the bath water, the dirt in the filter 4 is discharged from the discharge port 3 to the bath. May cause the bath water in the bathtub to become dirty,
When a predetermined time elapses after the stirring and washing is completed, the dirt in the filter 4 is automatically drained from the drain port 38, so that such a problem is eliminated.

9 and 10 show an embodiment of the invention of claim 3, wherein the opening / closing lid 8 can be attached to and detached from the filter 4 by a screwing method. For example, a male screw portion is formed on the outer peripheral surface of the opening 7 on the upper surface of the filter 4 and a female screw portion is formed on the inner peripheral surface of the opening / closing lid 8, and the opening / closing lid 8 is rotated in one direction to form a male screw portion and a female screw portion. The opening / closing lid 8 is attached to the opening 7 by screwing, and the opening / closing lid 8 can be removed from the opening 7 by turning the opening / closing lid 8 in the opposite direction to release the screwing of the male screw portion and the female screw portion. I am doing it. A stirring shaft 44 is rotatably attached vertically through the center of the opening / closing lid 8 having a circular planar shape, and a handle 6 is attached to the upper end of the stirring shaft 44. The handle 6 is formed of a base piece 6a fixed to the upper end of the stirring shaft 44 and an extension piece 6b pivotally attached to the tip of the base piece 6a so as to be vertically rotatable. The state in which the base piece 6a overlaps the upper surface and the base piece 6a
It is formed so as to be rotatable and freely extendable between the state of No. and the state of being in line with each other. The extension piece 6b is formed to be longer than the base piece 6a, and knobs 46 are provided on both upper and lower surfaces of the tip of the extension piece 6b. An engaging portion 9 is provided on the upper surface of the opening / closing lid 8. The engagement portion 9 is formed in a columnar shape so as to project upward, and is outside the rotation locus of the tip of the handle 6 (the tip of the base piece 6a and the tip of the extension piece 6b) when the handle 6 is folded, and It is provided at the end of the upper surface of the opening / closing lid 8 at a position inside the rotation locus of the tip of the handle 6 (tip of the extension piece 6b) when the handle 6 is extended.

The embodiment shown in FIGS. 9 and 10 has almost the same construction as that of the embodiment shown in FIG. 1 except for the construction of the handle 6 and the opening / closing lid 8. The operation of purifying water can be performed. In order to clean the filter medium 40 of the filter 4, first, the operation of the circulation pump 2 is stopped, the container lid 5 is opened to expose the filter 4 to the opening on the upper surface of the container 23, and then the filtration is performed. Opening / closing lid 8 of container 4
The filter medium 40 is agitated by operating the handle 6 on the upper surface of the agitator 41 to rotate the agitator 41, and the dirt adhering to the filter medium 40 can be separated from the filter medium 40 for cleaning. At this time, the handle 6 is used in a folded state as shown in FIG. 9, and the knob 46 is grasped and the handle 6 is rotated to rotate the agitator 41 to rotate the filter medium 40.
Can be washed with stirring. Next, the switching valve 3
The direction of 7 is switched from the discharge port 3 side to the drain port 38 side, the circulation pump 2 is operated, the bath water in the bathtub is sucked from the suction port 1 and the dirt separated by the washing of the filter medium 40 is drained together with the bath water. Drain from 38 for rinsing.

When replacing the filter material 40 of the filter 4, the handle 6 is extended as shown in FIG.
In this state, turn the handle 6. When the handle 6 is extended in this way and rotated in the direction of the arrow in FIG. 10B, the extension piece 6b of the handle 6 is caught by the engaging portion 9, and the rotational force of the handle 6 acts as a force to rotate the open / close lid 8 to open / close. The lid 8 can be opened by rotating the lid 8. When the knob 46 is grasped at the tip and the handle 6 is rotated to push the engaging portion 9 to rotate the opening / closing lid 8, the opening / closing lid 8 can be rotated with a small force by the principle of leverage. There is no need to provide a separate jig for turning the. Further, since the handle 6 which also serves as a jig for turning the opening / closing lid 8 is integrated with the opening / closing lid 8, it is not lost and the storage is compact.

After the opening / closing lid 8 is rotated and removed in this way, the filter medium 40 in the filter 4 is taken out from the opening 7. When the inner lid 67 is provided in the filtration tank 13 in the filter 4, the inner lid 67 can be removed to take out the filter medium 40. Then, the filter medium 40 is filled with new filter medium 40.
After the replacement, the opening / closing lid 8 is covered on the opening 7, the handle 6 is turned in the opposite direction, and the engaging portion 9 is pushed by the handle 6, whereby the opening / closing lid 8 is turned in the opposite direction and the opening / closing lid 8 is opened. 7 can be screwed and attached.

[0034]

As described above, the invention according to claim 1 has a circulation path connecting the suction port, the circulation pump and the discharge port, and operates the circulation pump to suck the bath water in the bathtub from the suction port. In a bath water purifying apparatus that circulates by discharging from a discharge port and purifies bath water by a filter arranged in the circulation path, a filter is provided in a body with a body lid that can be freely opened and closed. Along with this, a stirrer for manually stirring the filter medium filled in the filter is provided in the filter, and either the filter is connected to the discharge port or the filter is connected to the drain port for discharging the bath water in the filter. Since it is equipped with a switching valve that switches the operation of the circulation pump when it detects that the vessel lid is opened, it also has lid opening and closing detection means that switches the connection of the filter to the drain port side. When operating the stirrer to clean the inside of the filter or opening the filter opening / closing cover to replace the filter material of the filter, the circulation pump automatically stops and the filtration is stopped when the cover is opened. The connection of the device is automatically switched to the drain port side, it is possible to prevent dirt from cleaning the inside of the filter from being discharged from the discharge port to the bathtub, and while the circulation pump is operating. It is possible to prevent the opening / closing lid from being blown off as in the case of opening the opening / closing lid of the filter.

Further, the invention of claim 2 has a circulation path connecting the suction port, the circulation pump and the discharge port, and operates the circulation pump to suck the bath water in the bathtub from the suction port and discharge it from the discharge port. In the bath water purifying apparatus that purifies the bath water by the filter disposed in the circulation path by circulating the filter by disposing the filter inside the body with the body lid openably and closably attached, The filter was equipped with a stirrer that stirs the filled filter media by manual operation, and the rotation detection means that detects the rotation of the stirrer is provided.Therefore, the number of rotations is detected based on the detection of the rotation of the stirrer, It is possible to know whether the cleaning has been sufficiently performed, and it is possible to prevent insufficient cleaning in the filter.

Further, the invention according to claim 3 has a circulation path connecting the suction port, the circulation pump and the discharge port, and operates the circulation pump to suck the bath water in the bathtub from the suction port and discharge it from the discharge port. In the bath water purifying apparatus that purifies the bath water by the filter disposed in the circulation path by circulating the filter by disposing the filter inside the body with the body lid openably and closably attached, The filter is equipped with a stirrer that manually stirs the filled filter media, and an opening and closing lid that closes the opening provided in the filter is screwed on.A handle for rotating the stirrer is provided on the outer surface of the opening and closing handle. The opening / closing lid is provided with an engaging portion that engages with the handle and rotates the opening / closing lid as the handle rotates, so that the handle for rotating the stirrer can be rotated with the engaging portion engaged. This allows the opening / closing lid to be opened and closed by rotating the opening / closing lid, eliminating the need for a separate jig for opening / closing the opening / closing lid of the filter, reducing the number of parts and reducing costs. Is what you can do.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention.

2A and 2B show a part of an opening / closing lid of the filter according to the above-mentioned embodiment, wherein FIG. 2A is a sectional view and FIG. 2B is a partially cutaway plan view.

FIG. 3 is a control block diagram of the above-described embodiment.

FIG. 4 is a flowchart showing an operation of manual cleaning in the above-mentioned embodiment.

FIG. 5 is a schematic cross-sectional view of another embodiment of the present invention.

6A and 6B show a part of an opening / closing lid of the filter of the above-mentioned embodiment, wherein FIG. 6A is a sectional view and FIG. 6B is a plan view.

FIG. 7 shows another aspect of the above-mentioned embodiment,
(A), (b) is sectional drawing, respectively.

FIG. 8 is a flowchart showing an operation of manual cleaning in the above-mentioned embodiment.

FIG. 9 shows still another embodiment of the present invention,
(A) is a schematic sectional view of the filter medium at the time of stirring, and (b) is a schematic plan view of the filter medium at the time of stirring.

FIG. 10 shows an embodiment of the above, wherein (a) is a schematic cross-sectional view when the opening / closing lid is opened and closed, and (b) is a schematic plan view when the opening / closing lid is opened and closed.

FIG. 11 is a schematic cross-sectional view of a conventional example.

[Explanation of symbols]

 1 Suction Port 2 Pump 3 Discharge Port 4 Filter 5 Body Lid 6 Handle 7 Opening 8 Opening / closing Lid 9 Opening 11 Opening / closing Detection Means 12 Rotation Detection Means 23 Instrument 37 Switching Valve 38 Drainage Port 40 Filter Media 41 Stirrer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Daisuke Tawa 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (3)

[Claims] 1. A circulation path connecting a suction port, a circulation pump and a discharge port, wherein the circulation pump is operated to suck the bath water in the bathtub through the suction port and discharge it from the discharge port for circulation. In a bath water purification device that purifies bath water with a filter placed in the circulation path, the filter is installed in the body with a lid that can be opened and closed, and the filter media filled in the filter is manually operated. The filter is equipped with a stirrer that stirs at, and a switch valve that switches the filter to either the discharge port or the discharge port for discharging the bath water in the filter is provided. A bath water purifying device comprising a lid opening / closing detecting means for detecting the opening of the valve to stop the operation of the circulation pump and switching the connection of the filter to the drain port side. 2. A circulation path connecting the suction port, the circulation pump, and the discharge port, wherein the circulation pump is operated to suck the bath water in the bathtub from the suction port and discharge it from the discharge port to circulate the water. In a bath water purification device that purifies bath water with a filter placed in the circulation path, the filter is installed in the body with a lid that can be opened and closed, and the filter media filled in the filter is manually operated. A bath water purifying apparatus, characterized in that a stirrer for stirring is provided in a filter, and rotation detecting means for detecting rotation of the stirrer is provided. 3. A circulation path connecting the suction port, the circulation pump and the discharge port, wherein the circulation pump is operated to suck the bath water in the bathtub from the suction port and discharge it from the discharge port for circulation. In a bath water purification device that purifies bath water with a filter placed in the circulation path, the filter is installed in the body with a lid that can be opened and closed, and the filter media filled in the filter is manually operated. The filter is equipped with a stirrer that stirs with, and an opening and closing lid that closes the opening provided in the filter is attached by a screwdriver, and a handle for rotating the stirrer is provided on the outer surface of the opening and closing lid, and the handle is engaged with the handle. An apparatus for purifying bath water, characterized in that the opening / closing lid is provided with an engaging portion for rotating the opening / closing lid with the rotation of.