JPH0677656B2 - Bathtub water purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a bath water purifying apparatus.

<Prior Art and Its Problems> As a bath water purifying apparatus, there is provided an apparatus of a type in which bath water is circulated in a circulation path, purified by passing through a purifier disposed in the circulation path, and returned to the bath. In the apparatus of this system, conventionally, the bath water is used to back-wash the purifier so that the circulation path is back-circulated. However, in this method, since the bath water is used, regeneration of the purifier tends to be insufficient, and there is a drawback that the bath cannot be used due to dirty water during backwashing. Since the tub water that is being made must be discharged without returning it to the tub, the tub water will decrease sharply.

Based on the above, the applicant of the present invention applied a patent application dated February 8, 1991 under the name "Bathtub Purification Device" to introduce clean water from the outside to backwash the purifier when regenerating the purifier. To provide a device. With this device, when purifying the bathtub, the bathwater is purified while passing through the circulation path, and when the purifier is regenerated, clean water introduced from the outside flows back through a part of the circulation path and the purifier and backwashes. , Discharged outside the circulation path.

However, even in the case of a device that backwashes with clean water, when the operation is switched from the bath water purification operation to the direct backwash operation, the initial backwash operation time is caused by the valve opening and closing operation time in the circulation path. There was a risk that some wash water would enter the bath without being discharged.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks and to provide a bathtub water purifying apparatus in which initial backwash water does not enter the bathtub side even when the bathtub water purification operation is directly switched to the backwash operation. .

Another object of the present invention is to provide a convenient bath water purifying device that displays when the purifier is clogged and notifies the cleaning time.

<Means for Solving the Problems> In order to achieve the above object, the bath water purifying apparatus of the present invention comprises:
A circulation path for purifying bath water returning from the bathtub to the bathtub through one or more purifiers is provided, and clean water introduced from the outside by a backwash pump when backwashing the purifier is the purifier and the circulation path. Is a bathtub water purifying apparatus configured to be discharged to the outside of the circulation path after backflowing a part of the backwash pump, wherein the backwash pump switches from the bathtub water purifying operation to the backwash operation of the purifier, The first feature is that after the switch for opening and closing the valve to be opened and the valve to be closed is turned on, the valve is turned on after a delay of at least the time required for the opening / closing operation of the valve.

The bath water purifying apparatus of the present invention includes a bath for purifying bath water returning from the bath through one or more purifiers to the bath, and bath water provided with circulating water heating means in the middle of the bath. A purifying device, wherein the circulating water heating means is in operation,
Secondly, when the temperature rise rate of the bath water is below a certain level, the clogging of the purifier is automatically displayed.
It is a feature of.

<Operation> According to the first feature, even when the bath water purification operation is switched to the backwash operation of the purifier, the backwash pump must be operated after the valve in the circulation path or the like is completely opened and closed. For example, since it is not driven, backwash water is reliably prevented from entering the bathtub side through the half-open valve.

Further, according to the second feature, when the circulating bath water decreases due to clogging of the purifier, the amount of water heated by the circulating water heating means decreases, and the temperature rise rate of the bath is higher than that in normal circulation. Since the temperature is remarkably lowered, it can be detected and displayed when the rate of temperature increase is below a certain level. This display allows the user to know that the purifier has become clogged, and can effectively clean the purifier at an appropriate time.

<Embodiment> FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, FIG. 2 is a time chart of pumps and valves, and FIG. 3 is an explanation of a temperature rise state of bath water by circulating water heating means. It is a figure.

A hair collector 20 and a filter 30 are provided for the bathtub 10 as a purifier for bathwater, and the bathwater from the bathtub 10 is circulated by the circulation pump P ₁ in a direction indicated by a solid arrow in the circulation path 1. 20. Filtered through the filter 30 and circulated to the bath 10 for purification.

The hair collector 20 is a circulation pump for hair and other large dust.
It is provided in order to prevent it from being carried over to P ₁ and the filter 30 and impairing its function, and is provided upstream of the filter 30 and the circulation pump P _{1 in the} circulation path 1. Bath water enters from the lower part of the hair collector 20, and the filter 21
Hair is removed as it passes from bottom to top.

Two electric valves V ₁ and V ₂ are provided in the circulation path 1 and are opened during the purification operation. At the final position of circuit 1,
Circulating water heating means including a heat exchanger 40, a temperature raising boiler 41, and a heat exchange pump P ₃ is provided. Further, a temperature sensor S for detecting the bath water temperature is provided at the circulation start position of the circulation path 1 from the bath 10.

Reference numeral 50 denotes a clean water cistern, and the cistern 50, the backwash pump P ₂ and the motor-operated valve V ₃ constitute a clean water introducing means. A float valve 51 is provided in the cistern 50, and clean water is replenished from the water supply when the water level falls below a certain level. The clean water from the cistern 50 passes through the purified water introduction path 2 and enters the filter 30 from the three-way branch point A.

A bypass 3 is provided for the circulation pump P ₁ ,
A first discharge path 4 is branched from the bypass path 3. Further, a second discharge path 5 is provided from the hair collector. Motor-operated valves V ₄ , V ₅ , and V ₆ are provided in the bypass passage 3, the first discharge passage 4, and the second discharge passage 5. These electric valves _{V 1, V 2, V 3} , V 4, V 5, V 6 are made an open command or closing command, take some time to actually opening and closing operation is completed.

70 is a remote controller. By operating the remote controller 70,
A bath water purification operation and a purifier backwash operation can be performed via a control unit (not shown). 71 is a bath water purification operation switch, 71a is its pilot lamp, 72 is a backwash operation switch, 72a is its pilot lamp, 73 is a temperature control switch, 7
3a is a set temperature display lamp and 73b is an actual temperature display lamp. During the cleaning operation, the circulating water from the bathtub is detected by the temperature sensor S, and when it reaches the set temperature, the circulating water heating means 40, 41,
P ₃ is stopped. Further, a display lamp 73c is provided as a display means when there is an abnormality described later.

Now, when the purification operation switch 71 is turned on, the circulation pump P ₁
Is started, the motor-operated valves V ₁ and V ₂ open for some operating time, the bath water is circulated, and the purifier 2
Purification by 0, 30 is performed. When the backwash operation switch 72 is turned on during this purification operation state, the switch for switching from the purification operation to the backwash operation is turned on in the device, the circulation pump P ₁ is turned off, and the motor operated valve is operated.
V ₁ and V ₂ enter the closing operation from the open / closed state. The time required for this closing operation is t ₁ hour (see FIG. 2). At the same time, the motor-operated valves V ₃ , V ₄ and V ₅ enter the opening operation from the closed state. The time required for this opening operation is also set to t ₁ hour (for convenience, it is similar to the operation time of the valves V ₁ and V ₂ ). This t ₁ hour is short.
Further, in the present invention, the drive of the backwash pump P ₂ is not started at the same time as the ON time of the changeover switch, but is delayed by a time t ₂ longer than the time t ₁ . As the delay means, a delay relay or other well-known technology can be used. With this configuration, after the motor-operated valves V ₁ and V ₂ are completely closed, the introduction pressure of the clean water is applied, so that the dirty water from which the hair collector 20 is backwashed passes through the valve V ₂ to the bathtub side. There is no risk of intrusion. As the backwash pump P ₂ is driven, the clean water is filtered by the filter 30 as indicated by the broken line arrow.
From the lower side to the upper side, further enters the bypass path 3 from the three-way branch point B, and further discharged from the three-way branch point C through the first discharge path 4 to the outside. This prevents the hair collector 20 from being backwashed with the initially dirty water. Then, after this state is maintained for a while, the valve V ₅ is closed and the valve 6 is opened. As a result, the water that has entered the bypass passage 3 from the three-way branch point B does not go to the first discharge passage 4 side, enters the hair collector 20 from the three-way branch point D, and passes through the filter 21 from top to bottom. Then, hairs and the like adhering to the lower side of the filter 21 are dropped, and are discharged together with the second discharge path 5. Valve V ₁
Is completely closed, so do not go to the bathtub side.

On the other hand, during the purification operation, the circulating water heating means 40, 41, P ₃
The circulating water can be heated with, for example, the hair collector
When 20 is clogged, the circulation amount of the bath water decreases, and as a total thereof, a phenomenon occurs in which the bath water temperature does not rise even after a long time. That is, as shown in FIG. 3, when the circulation is normally performed, it is T ₀ time for the temperature detected by the temperature sensor S to rise from E ₀ to E ₁ , for example. On the other hand, when the circulating water decreases due to clogging, the temperature of the sensor S rises from E ₀ to E ₁ in a time T ₁ which is much longer than the time T ₀ . That is, the clogging causes the rate of temperature rise to decrease significantly. Therefore, in the present invention, the temperature increase rate is calculated by the control unit (not shown) based on the temperature from the temperature sensor S, and the display lamp 72c of the remote controller 70 is made to blink when the rate is below a certain level. As a result, the user can know the clogging state of the purifier and can effectively purify and regenerate the purifier at an appropriate time.

In the above, each valve is operated if it is not operated.
V ₁ , V ₂ , V ₃ , V ₄ , V ₅ are all closed, but the motor-operated valve V ₆ arranged in the second discharge passage 5 can be opened and closed independently of other valves. The open / close switch is arranged near the hair collector 20. By doing so, when cleaning the hair collector 20 manually, by opening only the valve V ₆ by the opening / closing switch in advance, the dirty water in the hair collector 20 can be discharged in advance, and the cleaning operation can be performed. In addition, it is possible to prevent the sewage from overflowing the hair collector 20 during the work and to stain the surroundings or wet the electric parts.

<Effect> The present invention is configured as described above, and according to the bathtub water purifying apparatus of claim 1, at the time of switching from the bathtub water purifying operation to the backwash operation, the drive start of the washing pump is at least the opening / closing operation of the valve. Since the time required for the backwashing is delayed, the inconvenience that the dirty water in the initial stage of backwashing enters the bathtub side is eliminated.

Further, according to the bath water purifying apparatus of claim 2, when the circulating water heating means provided in the circulation path for bath water purification is used and the temperature rise rate of the bath water by the heating means is below a certain level, Since this is displayed, the clogging of the purifier can be easily known, and cleaning can be effectively performed at an appropriate time.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the device of the present invention, FIG. 2 is a time chart of pumps and valves, and FIG. 3 is a diagram for explaining a temperature rise state of bath water by circulating water heating means. 1: Circulation path 2: Clean water introduction path 10: Bath 20: Hair collector 30: Filter 40, 41: Circulating water heating means 50: Cistern 70: Remote control P ₁ : Circulation pump P ₂ : Backwash pump V ₁ , V ₂ , V ₃ , V ₄ , V ₅ , V ₆ : Motorized valve S: Temperature sensor

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display area F24H 9/00 W

Claims (2)

[Claims] 1. A bathtub water purification circuit that returns from the bathtub to the bathtub through one or a plurality of purifiers, and clean water introduced from the outside by a backwash pump when backwashing the purifiers is used. A bath water purifying device configured to discharge back to the outside of the circulation path after backflowing through a part of the purifier and the circulation path, wherein the backwash pump changes from bath water purification operation to backwash operation of the purifier. When the switching is performed, after the changeover switch for opening and closing the valve to be opened and the valve to be closed is turned on, it is turned on with a delay of at least the time required for the opening and closing operation of the valve. Bath water purification device. 2. A bathtub water purifying apparatus comprising a bathtub water purifying circulation path returning from the bathtub to one of a plurality of purifiers and returning to the bathtub, and a circulating water heating means provided in the circulation channel. The bath water purifying apparatus is configured to automatically display the clogging of the purifier when the temperature rise rate of the bath water is equal to or lower than a certain value during the operation of the circulating water heating means.