JPH0780218A - Bath water circulation purification device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention relates to a bath water circulation purification device, which is capable of efficiently removing air from a filter. [Structure] In the present invention, a suction port provided in the bathtub body (1)
(2) and the discharge port (3) are connected by a bath water circulation channel (D), and a circulation pump (P) and a filter (R) are arranged in the middle of the circulation channel (D). In the bath hot water circulation purification device that is installed and is capable of filtering while circulating the hot water, an air bleeding valve (V ₁ ) is provided in the filter (R), and after the filtration operation, the circulation pump (P)
And the circulation flow path that forms the inflow side of the filter (R)
(D) is closed, the air vent valve (V ₁ ) is activated, and the filter (R)
I tried to exhaust the air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water circulation purification device.

[0002]

2. Description of the Related Art Conventionally, a suction port and a discharge port provided in a bath tub body are connected and connected by a bath hot water circulation passage, and a circulation pump and a filter are arranged in the middle of the circulation passage to form a bath. There is a bath water circulation purification device that is configured to allow filtration while circulating hot water.

In the bath hot water circulation purifying apparatus having the above-mentioned structure, air is accumulated in the filter, the air is compressed during operation of the circulation pump, and when the circulation pump is stopped, the compressed air is circulated from the inside of the filter. There was a problem of backflowing in and causing an airlock.

Therefore, in order to bleed the air inside the filter, an air bleeding bypass passage is provided to bleed air, and in recent years, Japanese Patent Laid-Open No. 4-146752 and Japanese Patent Laid-Open No. 4-14752.
As disclosed in Japanese Patent No. 341269, there is a device in which a filter material in a filter is backwashed before starting operation of a bath water circulation purification device, and air is released during the backwashing.

[0005]

However, the above-mentioned bath hot water circulation purifying apparatus still has the following problems.

In the case where the air vent bypass channel is provided, the cost increase cannot be avoided, and when the air is vented, the filter medium may flow out to the bath body through the bypass channel. Dust accumulated in the filter may flow out into the bath body through the bypass flow path, which is a sanitary problem.

The air bleeding method in the backwash has a problem that the water level is lowered because the bath water flows out to the outside when the backwash is performed.

Further, if the operation of the bath hot water circulation purifying apparatus is continued (continuous ON / OFF repetition), there is a risk that the water level will drop too much and the bath hot water cannot be circulated.
Moreover, it was wasteful to throw away the bath water, which was uneconomical.

An object of the present invention is to provide a bath hot water circulation purifying apparatus which can solve the above problems.

[0010]

According to the present invention, a suction port and a discharge port provided in a bath body are connected by a bath hot water circulation passage, and a circulation pump and a filter are provided in the middle of the circulation passage. In the bath hot water circulation purifying device configured to allow filtration while circulating the bath hot water, an air vent valve is provided in the above filter,
After the filtration operation, the circulation pump is stopped, the circulation flow path forming the inflow side of the filter is closed, and the air vent valve is operated to discharge the air from the filter. It is related.

The present invention is also characterized by the following configurations.

(B) The suction port and the discharge port provided in the bathtub body are connected and connected by a bath hot water circulation passage, and a circulation pump and a filter are arranged in the middle of the circulation passage to provide a bath water. In the bath water circulation purification device configured to be able to filter while circulating
An air bleed valve was provided in the above filter, and the circulation flow path on the inflow side of the filter was closed during the filtration operation, and the air bleed valve was operated to discharge the air from the filter.

(B) The suction port and the discharge port provided in the bathtub body are connected and connected by a bath hot water circulation passage, and a circulation pump and a filter are arranged in the middle of the circulation passage to provide a bath water. In the bath water circulation purification device configured to be able to filter while circulating
An air bleeding valve was provided in the above filter, and when the filtration operation was started, the circulation flow path on the inflow side of the filter was closed and the air bleeding valve was operated to discharge the air from the filter.

(C) The operation time of the air bleeding valve is set to be as short as possible so that the air in the filter can be discharged.

(D) Water level detecting means is provided in the above filter,
When the water level detecting means detects a constant water level, the air vent valve is closed.

(E) In the bath hot water circulation purifying apparatus, the air vent valve is also used as the flow passage switching valve provided in the bath hot water circulation passage forming the inflow side of the filter.

[0017]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

In this embodiment, as a bath hot water circulation purifying device,
A bubble-generating bath equipped with a filter is used.

FIG. 1 is an explanatory view of a bubble generating bath A as a bath hot water circulating apparatus according to this embodiment.
The suction port 2 and the discharge port 3 provided in the bath body 1 are communicatively connected by a bath hot water circulation flow path D.

The bath hot water circulation passage D is composed of a bath hot water suction passage D ₁ and a bath hot water forcible flow passage D _2, and the bath hot water in the bath body 1 is located between the both passages D ₁ , D _2. A two-stage impeller type circulation pump P that circulates the water is interposed.

Further, bathwater Tsuyooku channel D ₂ is circulated from the pump upper and lower impeller chamber P _1, P ₂ of the P, and extending respectively, one directly linked bathtub body 1 and communicating, the other filter machine R It is in communication with.

Further, the filter R disposed in the middle of the above-mentioned strong feed flow path D ₂ is connected to the circulation pump P via the flow path switching valve V, and the filter R allows the bath body 1 to be connected. The bath water inside can be filtered and purified.

The bath hot water circulation channel D will be described in more detail. One end of the bath hot water suction channel D1 is connected to the suction port 2 provided in the bath body 1 and the other end of the circulation pump P is connected. It is connected to the water inlet 21 of the lower impeller room P1.

The bath hot water flow passage D ₂ that connects the lower impeller chamber P ₁ of the circulation pump P and the bath body 1 to each other connects one end thereof to the water outlet 22 of the lower impeller chamber P ₁ and the other end thereof. It is connected to a discharge port 3 provided in the bathtub body 1 so as to communicate therewith.

The upper impeller chamber P2 of the circulation pump P
And a filter R are connected to each other, the bath hot water supply flow passage D ₂ has one end connected to the water outlet 23 of the upper impeller chamber P2 and the other end connected to the port a of the flow passage switching valve V. ing.

The c port of the flow path switching valve V is connected to the filter R so that the bath hot water flow path is connected from the lower part of the filter R.
The filtered water flow passage D ₃ forming a part of D ₂ is extended to join the bath hot water flow passage D ₂ that connects the lower impeller chamber P ₁ of the circulation pump P and the bath body 1 to each other. .

The port b of the flow path switching valve V is connected to the exhaust flow path D ₄ extended to the outside so that the air inside the filter R can be discharged.

A jet nozzle N is attached to the discharge port 3 of the bath body 1, and the nozzle N and the edge portion 1a of the bath body 1 are attached.
The air intake part 5 provided in the above is communicated and connected via the intake pipe 6.

In FIG. 1, reference numeral 7 is a functional casing, which houses the circulation pump P, the drive motor M for driving the pump P, and the filter R. 24 is the lower impeller and 25 is the upper impeller.

By the way, F is a control unit for controlling all the functions of the bubble generating bath A, which is disposed in the functional unit casing 7. The control unit F is provided with a timer and the like, has a CPU and a memory, and can issue a flow path switching instruction of the flow path switching valve V based on a program stored in advance.

Although glass beads are used as the filter material 11 provided in the filter R, the present invention is not limited to these.

With the above structure, the bubble generating bath A according to the present invention operates the circulation pump P to remove the bath water in the bath body 1 from the suction port 2 to the bath hot water suction passage D _{1 to the} circulation pump. Lower impeller chamber P ₁ → Pour bath hot water flow passage D ₂ → Flow with bath body 1 and suction port 2 → Bath hot water suction passage D ₁
→ Lower impeller chamber P ₁ of the circulation pump P → Upper impeller chamber P ₂ → Flow path switching valve V → Filter R → Strong bath hot water flow path D ₂ → Flowing with the bath body 1 to filter and purify the hot water You can

At this time, due to the ejector effect, air can be taken into the jet nozzle N from the air intake portion 5 and the bath water containing bubbles can be jetted into the bath body 1.

According to the present invention, in the bath water circulation device having the above-mentioned structure, the filter R is provided with an air bleeding valve V _1, and after the filtration operation, the circulation pump P is stopped and the circulation forming the inflow side of the filter R is performed. It is characterized in that the flow path D is closed and the air vent valve V ₁ is operated to discharge the air from the filter R.

During the filtration operation and at the start of the filtration operation, the circulation passage D on the inflow side of the filter R is closed and the air vent valve V ₁ is operated to discharge the air from the filter R. It also has a feature to do.

The operating time of the air bleeding valve V ₁ depends on the filter R.
Since the time t is as short as possible so that the air inside can be discharged, the amount of bath water flowing out together with the air can be extremely small, and the water saving effect can be enhanced and the cost can be improved.

By the way, in this embodiment, the air bleeding valve V ₁ is also used as the flow path switching valve V, and each port of the flow path switching valve V is
Air can be released by controlling the opening / closing timing of a, b, and c.

Furthermore, as shown in FIG.
A pressure sensor S is provided as a water level detecting means,
The water level in the filter R can be detected.

The pressure sensor S is connected to the above-mentioned control unit F, and as described later, when the air in the filter R is discharged, it detects the water level even if the bath water flows out together with the air. When the water level reaches a certain level, the b port of the flow path switching valve V is shut off so that the bath water does not flow out excessively.

Here, the case of bleeding the filter R will be described below with reference to FIGS. 2 and 3.
2 is an explanatory diagram showing the state transition of the circulation pump P and the flow path switching valve V, and FIG. 3 shows the state of the air inside the filter R corresponding to FIG.

(When bleeding air after completion of filtration operation)
As shown in Fig. 2, when hot water is supplied to the bathtub body 1 (10
1) Then, the inside of the filter R is completely filled with air (Fig. 3).
(A)).

Then, in FIG. 2, the circulation pump P is turned on.
When the bath hot water circulation purification device starts operating (102) N (102), the bath water is filtered in the filter R in the air-water mixed state (Fig. 3 (b)). After that, the circulation pump P is turned off. (103) Although compressed air remains in the filter R (FIG. 3 (c)), at the same time, the control unit F outputs an instruction signal according to the programming stored in advance, and the a port of the flow path switching valve V is output. And b port is opened (104) for a certain short time t.
At this time, as shown in FIG. 3D, the compressed air in the filter R is discharged to the outside from the exhaust flow path D ₄ through the c port / b port of the flow path switching valve V.

In this case, the time for opening the port b can be extremely short, so that the bath water in the filter R hardly flows out to the outside, and the water saving effect can be enhanced, which is economical.

When a certain short time t has passed, the control unit F
Outputs an instruction signal, and this time shuts off the b port of the flow path switching valve V and opens the a port (105). At this time, the inside of the filter R is free of air traps as shown in FIG. Therefore, it is possible to prepare for the next turn-on of the circulation pump P.

As described above, by controlling the operation of the flow path switching valve V, the air in the filter R can be discharged easily and reliably, and the circulation pump P may cause an air lock. Never. Moreover, it is possible to realize such air bleeding at low cost.

Further, within a set short time t, the filter R
When the bath water inside is also discharged together with the air, even if the bath water is discharged more than expected at that time, the controller F detects the water level by the water level detection of the pressure sensor S as the water level detection means. Since it operates so as to shut off the b port of the switching valve V, the amount of discharged hot water is regulated, the water saving effect can be enhanced, and the amount of hot water in the bath body 1 becomes insufficient. Never.

Next, the case where air is removed during the filtration operation will be described.

(When bleeding air at the start of filtration operation)
In FIG. 2, when hot water is supplied to the bathtub body 1 (101),
All of the inside of the filter R is in the state of air accumulation (FIG. 3 (a)), but in this case, the control unit F outputs an instruction signal at the same time when the circulation pump P is turned on and the flow path switching valve V is turned on. Of a
The port is shut off and the port b is opened for a short time t (106), during which the air in the filter R is discharged.

After a lapse of a certain time t, the control section F outputs an instruction signal, and this time shuts off the b port of the flow path switching valve V and opens the a port so that the normal filtering operation is performed. Yes (107).

Even in this case, since the time for opening the port b is extremely short, the bath water in the filter R hardly flows out to the outside, which is economical.

(When bleeding air during filtration operation) Air bleeding can be performed even during filtration operation. In FIG. 2, for example, when the normal filtration operation is performed, the circulation pump P is started. It may be programmed so as to bleed air when a predetermined time T has elapsed after the start.

According to such programming, the control unit F outputs an instruction signal when a certain time T has elapsed after driving the circulation pump P to shut off the a port of the flow path switching valve V, and b for a certain short time t. Open the port (10
8) During that time, the air in the filter R is discharged.

Also in this case, when a certain time t elapses,
The control unit F outputs an instruction signal to shut off the b port of the flow path switching valve V and open the a port to perform normal filtration operation (109). Since it is extremely short, the bath water in the filter R hardly flows out to the outside, which is economical.

Further, in the previous case (when air is removed at the start of the filtering operation) and in this case as well, the discharge amount of the hot water is regulated by the operation of the pressure sensor S. There is no shortage of the amount of hot water in the main body 1.

As another embodiment, as shown in FIG. 4, an air bleeding valve V ₁ dedicated to bleeding air can be provided on the upper part of the filter R.

In the present embodiment, the air bleeding valve V ₁ is an electromagnetic valve connected to the control unit F similarly to the flow path switching valve V, and is opened and closed by receiving an instruction signal from the control unit F. There is.

As described above, in the bath hot water circulation purifying apparatus having the above-described structure, the filter R is provided with the air bleeding valve V _1, and after the filtration operation, the circulation pump P is stopped and the circulation forming the inflow side of the filter R is performed. By closing the flow path D and operating the air bleeding valve V ₁ for a certain short time t to discharge the air from the filter R, or during the filtering operation or when the filtering operation is started, The circulation flow path D forming the inflow side is closed, and the air bleeding valve V ₁ is operated for a fixed short time t to filter R
By discharging the air, it is economical because the bath water can be saved without flowing out excessively.

In addition, the filter material 11 and the filter R
It is hygienic without the dust accumulated inside flowing out.

Further, since the air can be surely released by simply controlling the opening / closing timing of each port a, b, c of the flow path switching valve V, the air lock of the circulation pump P can be prevented without increasing the cost.

Furthermore, since the air vent valve V ₁ is the flow path switching valve V, air can be vented while keeping the filter R compact, and a new air vent valve or air bypass can be installed. Since there is no need to attach it, cost can be reduced.

[0061]

The present invention has the following effects.

Since the bath water does not flow out excessively when the air is evacuated, there is a water saving effect, which is economical, and it is possible to prevent the level of the bath water in the bath body from lowering.

It is hygienic because the filter material and the dust accumulated in the filter do not flow into the bath body.

Since the air can be surely released by simply controlling the opening / closing timing of the air release valve, the air lock of the circulation pump can be prevented without increasing the cost.

By providing the filter with water level detecting means and closing the air bleeding valve when the water level detecting means detects a constant water level, the water saving effect can be further enhanced.

Since the flow path switching valve is also used as the air bleeding valve, it is possible to prevent the size of the filter from becoming large and to bleed air with a compact shape.

[Brief description of drawings]

FIG. 1 is an explanatory view of a bath hot water circulation purifying apparatus according to the present invention.

FIG. 2 is an explanatory diagram showing state transitions of a circulation pump and a flow path switching valve.

FIG. 3 is an explanatory diagram showing a state of air in the filter.

FIG. 4 is an explanatory diagram of a filter according to another embodiment.

[Explanation of symbols]

1 Bathtub body 2 Suction port 3 Discharge port A Bubble generating bathtub D Bath hot water circulation flow channel P Circulation pump R Filtration machine V Flow channel switching valve V ₁ Air vent valve

Claims (6)

[Claims] 1. The bath inlet (2) and discharge port (3) provided in the bath body (1) are connected and connected by a bath hot water circulation channel (D), and
In the bath hot water circulation purifying device, in which the circulation pump (P) and the filter (R) are arranged in the middle of the circulation flow path (D) to enable filtration while circulating the bath hot water, ) Is equipped with an air bleeding valve (V ₁ ), and after the filtration operation, the circulation pump (P) is stopped, the circulation flow path (D) on the inflow side of the filter (R) is closed, and the air bleeding valve (V) is closed. A bath water circulation purification device characterized by activating V ₁ ) to discharge air from the filter (R). 2. The inlet (2) and the outlet (3) provided in the bath body (1) are connected by a bath hot water circulation passage (D) so as to communicate with each other,
In the bath hot water circulation purifying device, in which the circulation pump (P) and the filter (R) are arranged in the middle of the circulation flow path (D) to enable filtration while circulating the bath hot water, ) air bleed valve (V ₁₎ is provided, during filtration operation, thereby closing the circulation passage forming the inlet side of the filter machine (R) (D), filtered actuates air bleed valve (V ₁₎ A bath hot water circulation purifier characterized by discharging air from the machine (R). 3. The inlet (2) and the outlet (3) provided in the bath body (1) are connected by a bath hot water circulation channel (D) so as to communicate with each other,
In the bath hot water circulation purifying device, in which the circulation pump (P) and the filter (R) are arranged in the middle of the circulation flow path (D) to enable filtration while circulating the bath hot water, ) Is equipped with an air bleeding valve (V ₁ ), and at the start of the filtration operation, the circulation flow path (D) on the inflow side of the filter (R) is closed and the air bleeding valve (V ₁ ) is operated to perform filtration. A bath hot water circulation purifier characterized by discharging air from the machine (R). 4. The operation time of the air bleeding valve (V ₁ ) is set to be as short as possible for discharging the air in the filter (R). The bath water circulation purification device described in Crab. 5. A water level detecting means is provided in the filter (R),
Air bleeding valve (V ₁ ) when the same water level detection means detects a constant water level
The bath hot water circulation purification apparatus according to any one of claims 1 to 4, wherein the bath water circulation purification apparatus is closed. 6. In the bath hot water circulation purifying device, a flow path switching valve (V) provided with an air bleeding valve (V ₁ ) in a bath hot water circulation flow path (D) which is an inflow side of the filter (R). ) Is also used as a bath water circulation purification device according to any one of claims 1 to 5.