JPH02227109A - Bathtub water purifying device - Google Patents

Abstract

PURPOSE:To prevent initial backwash water from getting into the bathtub side by delaying the start of driving a backwash pump by the time required for the opening and closing operation of a valve after an ON-OFF switch of the valve is ON when the bathtub water purifying operation is switched over to the backwash operation of a purifier. CONSTITUTION:When a purifying operation switch 71 is ON, solenoid valves V1 and V2 are opened and water in a bathtub 10 is circulated as shown by a solid line arrow mark by a circulating pump P1 and purification is carried out by a hair collector 20 and a filter 30. When a backwash operation switch 72 is ON during said purifying operation, the circulating pump P1 is OFF and solenoid valves V1 and V2 are closed after time t1 required for closing operation is passed. At the same time, solenoid valves V3, V4 and V5 are opened after time t1 is passed similarly. A delay relay or the like, for example, is used in a manner to constitute the start of driving a backwash pump P2 delayed by the time t1. The backwash water using pure water is discharged, for example, like shown by a broken line arrow mark, passing through discharge lines 4 and 5 to prevent the backwash water from getting into the bathtub 10.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a bathtub water purification device.

<Prior art and its problems> As a bathtub water purification device, a device is provided in which bathtub water is circulated in a circulation path, purified by passing through a purifier disposed in the circulation path, and returned to the bathtub. In this type of device, conventionally, the bath water was used to backwash the purifier and was circulated in the circulation path in the reverse direction. However, since this method uses bathtub water, the regeneration of the purifier is likely to be insufficient, and the bathtub cannot be used due to dirty water during backwashing. Do not return the water from the bathtub to the bathtub (
Since it has to be drained, the water in the bathtub decreases rapidly.

Based on the above, the present applicant filed a patent application dated February 8, 1999, titled "Bathtub purification device," and when regenerating the purifier, clean water is introduced from the outside to backwash the purifier. provided equipment to do so. In this device, when purifying the bathtub, the bath water is purified while passing through the circulation path, and when regenerating the purifier, the clean water introduced from the outside flows back through a part of the circulation path and the purifier to perform backwashing. , is discharged outside the circulation path.

However, even with equipment that backwashes using clean water, when switching from bathwater purification operation to direct backwash operation, the initial backwashing occurs due to the opening and closing operation time of the valve in the circulation path. There was a risk that part of the wash water would enter the bathtub without being drained.

SUMMARY OF THE INVENTION Therefore, the present invention aims to solve the above-mentioned drawbacks and provide a bathtub water purification device in which initial backwash water does not enter the bathtub side even when directly switching from bathtub water purification operation to backwash operation. .

Another object of the present invention is to provide a convenient bathtub water purification device that indicates when the purifier is clogged and informs the user of the time for cleaning.

Means for Solving the Problems> In order to achieve the above objects, the bathtub water purification device of the present invention has the following features:
A circulation path is provided for purifying bathtub water from the bathtub through one or more purifiers and returned to the bathtub, and when backwashing the purifier, clean water introduced from the outside by a backwash pump is passed through the purifier and the circulation path. The bathtub water purification device is configured to backflow a portion of water and then discharge it to the outside of the circulation path, wherein the backwash pump is configured to backwash a portion of the water and then discharge the water to the outside of the circulation path, and the backwash pump is configured to backwash a portion of the water when switching from bathtub water purification operation to backwash operation of the purifier. The first feature is that the valve is turned on with a delay of at least the time necessary for the opening/closing operation of the valve after the switch for switching between opening and closing of the valve to be opened and the valve to be closed is turned on.

Further, the bathtub water purification device of the present invention includes a circulation path for purifying bathtub water from the bathtub through one or more purifiers and returning to the bathtub, and a bathtub water heating means provided in the middle of the circulation path. In the purification device, during operation of the circulating water heating means,
A second aspect of the present invention is that the clogging of the purifier is automatically displayed when the rate of temperature rise of the bathtub water is below a certain level.
It is a feature of

According to the first feature above, even if the bathtub water purification operation is switched to the purifier backwash operation, the backwash pump must be operated only after the valves in the circulation path etc. have completely opened and closed. For example, since it is not driven, it is possible to reliably prevent backwash water from entering the bathtub through a half-open valve.

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 increase rate of the bathtub becomes higher than that during normal circulation. Since the temperature decreases significantly, it is possible to detect and display this 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 allows the user to effectively clean the purifier at an appropriate time.

<Example> Fig. 1 is an overall configuration diagram showing an embodiment of the present invention, Fig. 2 is a time chart of the pump and valves, and Fig. 3 explains the state of temperature rise of bathtub water by the circulating water heating means. It is a diagram.

The bathtub 10 is provided with a hair collector 20 and a filter 30 as a bathtub water purifier, and a circulation pump P is used to purify the bathtub 10.
Bathtub water is circulated along the circulation path 1 in the direction indicated by the solid arrow through the hair collector 20 and the filter 30 to the bathtub 10, where it is purified.

The hair collector 20 is provided to prevent hair and other bulky debris from being carried over to the circulation pump P and the filter 30, deteriorating or rendering the function impossible. The pump P is provided on the upstream side of the circulation path 1. Bathtub water enters the hair collector 20 from the lower part, and hair is removed when it passes through a filter 21 such as a net from the bottom to the top.

The circulation path 1 is provided with two electric valves v1 and v2,
It is opened during purification operation. In addition, at the final position of the circulation path 1, a heat exchanger 40, a temperature rising boiler 41, and a heat exchange pump P are provided.
, a circulating water heating means is provided. Further, a temperature sensor S for detecting the bathtub water temperature is provided in the circulation path 1 at a position where circulation from the bathtub 10 starts.

Reference numeral 50 denotes a clean water cistern, and the cistern 50, the backwash pump P2, and the electric valve (2) constitute clean water introduction means. The cistern 50 is provided with a float valve 51, and clean water is replenished from the water supply when the water level falls below a certain level.

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 passage 3 is provided for the circulation pump P, and a first discharge passage 4 is branched from the bypass passage 3. A second discharge path 5 is also provided from the hair collector. The bypass passage 3, the first discharge passage 4, and the second discharge passage 5 are provided with electric valves v4, VS, and V. These electric valves V.

, Vt, ■1, V, , V, , V, takes some time after the opening or closing command is issued until the opening/closing operation is actually completed.

Reference numeral 70 denotes a remote controller, and by operating the remote controller 70, a bathtub water purification operation and a backwashing operation of the purifier can be performed via a control section (not shown). 71 is a bathtub water purification operation switch, 71a is its pilot lamp, 72 is a backwash operation switch, ? 2a is its pilot lamp, 73 is a temperature control switch, 73a is a set temperature display lamp, and 73b is an actual temperature display lamp.

During the purification operation, the circulating water from the bathtub is detected by the temperature sensor S, and when the temperature reaches the set temperature, the circulating water heating means 40, 41,
P is stopped. An indicator lamp 73c is provided as an indicator when there is an abnormality, which will be described later.

Now, when the purification operation switch 71 is turned on, the circulation pump P starts driving, and the electric valve V3 opens after some operating time, and the bathtub water is circulated and purified. Purification is carried out by vessel 20.30. Then, when the backwash operation switch 72 is turned on during this purification operation state,
In the apparatus, the switch from purification operation to backwash operation is turned on, the circulation pump P1 is turned off, and the electric valves V3 and 18 enter the closing operation from the open/close state.

The time required for this closing operation is defined as t0 time (see FIG. 2), and at the same time, the motor-operated valves V5, V4, ■ enter the opening operation from the closed state. The time required for this opening operation is also 1. time(
For convenience, it is assumed that the operating time is the same as that of valve v2.

This 11 hours is a short time. In the present invention, the drive of the backwash pump P2 is not started at the same time as the on time of the changeover switch, but for a time t2 longer than the 11 hours.
It is configured so that it is performed with a time delay. As the delay means, a delay relay or other known technology can be used.

With this configuration, after the electric valves (1) and (2) are completely closed, the introduction pressure of clean water is applied, so that the dirty water that has backwashed the hair collector 20 passes through the valve (V) to the bathtub side. There is no risk of intrusion. By driving the backwash pump P2, clean water washes the filter 30 from bottom to top as shown by the broken line arrow, and further flows from the three-way branch point B to the bypass path 3.
The liquid then enters the three-way branch point C, passes through the first discharge path 4, and is discharged to the outside. This prevents the hair collector 20 from being backwashed with initially dirty water. After this state continues for a while, the valve vS' is closed,
Valve 6 is opened. As a result, the water that entered the bypass path 3 from the three-way branch point B does not go to the first discharge path 4 side.
It enters the hair collector 20 from the three-way branch point, passes through the filter 21 from top to bottom, removes hair etc. adhering to the lower side of the filter 21, and then passes through the second discharge path 5. be discharged. Valve #1 is completely closed, so it does not go to the bathtub side.

On the other hand, during purification operation, the circulating water heating means 40.41
．． P can heat the circulating water, but if the hair collector 20 is clogged, for example, the amount of circulating water in the bathtub decreases, resulting in a phenomenon in which the temperature of the bathtub water does not rise even over a long period of time. arise. That is, as shown in Figure 3,
When the circulation is performed normally, the temperature sensor S
For example, it takes T0 time for the temperature detected at sensor S to rise from Eo to E. However, when the circulating water decreases due to clogging, it takes longer than T0 time for the temperature of sensor S to rise from Eo to El. It takes much longer, 18 hours. In other words, when it is clogged, the rate of temperature rise is significantly reduced.

Therefore, in the present invention, a control section (not shown) calculates the temperature increase rate based on the temperature from the temperature sensor S, and when the rate falls below a certain level, the display lamp 72c of the remote control 70 is made to blink.

This allows the user to know whether the purifier is clogged and allows the purifier to be effectively purified and regenerated at an appropriate time.

In addition, in the above case, if there is no driving, Answer V
,,V,1. ■1, ■1, and VS are all closed, but the electric valve v6 disposed in the second discharge path 5 can be opened and closed independently of other valves, and its open/close switch is set to the above-mentioned group. It is placed near the hair device 20 or the like. By doing this, when cleaning the hair collector 20 manually, by opening only the valve vh with the opening/closing switch in advance,
The dirty water in the hair collector 20 can be discharged in advance, making cleaning work easier, and preventing the dirty water from overflowing from the hair collector 20 during the work and staining the surrounding area or wetting the electrical parts.

Effects> The present invention has the above-described configuration, and according to the bathtub water purification device of claim 1, when switching from bathtub water purification operation to backwash operation, the drive start of the cleaning pump is at least performed by the opening/closing operation of the valve. This eliminates the inconvenience of sewage entering the bathtub at the initial stage of backwashing.

Further, according to the bathtub water purification device of claim 2, by utilizing the circulating water heating means provided in the circulation path for bathtub water purification, when the rate of temperature rise of the bathtub water by this heating means is below a certain level, By displaying this information, you can easily know if the purifier is clogged, and you can effectively clean it at the appropriate time.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the apparatus of the present invention, FIG. 2 is a time chart of the pump and valves, and FIG. 3 is a diagram illustrating how the bath water is heated by the circulating water heating means. 1: Circulation path 2: Clean water introduction path 10: Bathtub 20: Hair collector 30: Filter 40. 41: Circulating water heating means 50 Nisistan 70: Remote control P,: Circulation pump P2: Backwash pump V2, ■3, v4, ■v,: Electric valve S: Temperature sensor Figure 1

Claims (2)

[Claims] (1) A circulation path is provided for purifying bathtub water from the bathtub through one or more purifiers and returned to the bathtub, and when backwashing the purifier, clean water introduced from the outside by a backwash pump is purified by the purifier. The bathtub water purification device is configured to backflow through a container and a part of the circulation path and then be discharged to the outside of the circulation path, and the backwash pump is configured to convert the water from the bathwater purification operation to the backwash operation of the purifier. A bathtub characterized in that, at the time of switching, after a switch for switching between a valve to be opened and a valve to be closed is turned on, the switch is turned on with a delay of at least the time necessary for the opening/closing operation of the valve. Water purification equipment. (2) A bathtub water purification device comprising a circulation path for purifying bathtub water from the bathtub through one or more purifiers and returning to the bathtub, and a circulating water heating means in the middle of the circulation path,
A bathtub water purification device characterized in that, during operation of the circulating water heating means, if the temperature rise rate of the bathtub water is below a certain level, clogging of the purifier is automatically displayed.