JP2001120922A - Bath water cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath water cleaning device surely performing air vent. SOLUTION: In this bath water cleaning device, air vent piping 1 and a motor driven stop valve 2 are provided in the upper part of a filter tank 21, and the air vent piping 1 is connected with a piping 41 not forming a closed loop and a discharge port 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bath water purifying apparatus.

[0002]

2. Description of the Related Art There is known a bath water purifying apparatus for circulating and purifying bath water by injecting bath water in a bath tub, filtering the water through a filtration tank, and then discharging the water into the bath tub. Since air gradually accumulates in the filtration tank, it is necessary to bleed air every predetermined time. In recent years, a device with a thermal cleaning function of circulating high-temperature water inside the bath water purification device for cleaning has been developed as a countermeasure against Legionella bacteria, etc. In this case, the pressure at the time of temperature rise becomes very high, and therefore, a mechanism for releasing this pressure is also required. For the above-mentioned purpose, in a large-scale bath water purifying apparatus mainly for business use, as shown in FIG. 7, a float type air bleeding valve 99 is provided at the upper part of the filtration tank 21 to thereby perform air bleeding and pressure bleeding. I was going.

[0003]

However, the conventional float type air bleeding valve often fails to operate due to clogging or sticking of dirt or the like, and there has been a problem that the reliability of the operation is not sufficient. An object of the present invention is to solve the above-mentioned problems of the prior art.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a bath water purifier for receiving bath water in a bath tub, subjecting the bath water to a predetermined purification treatment, and then discharging the bath water to the bath tub again. In the apparatus, a filter tank for filtering bath water, a pipe for bleeding air from the filter tank, and an on-off valve provided in the pipe are provided, and the pipe is connected to a pipe outside a closed loop. Is a basic feature. In the above configuration, it is possible to reliably release air or pressure by opening the on-off valve. It is desirable to provide an air presence / absence sensor in the filtration tank and control the on-off valve by a signal from the sensor. Alternatively, a pressure sensor may be provided in a closed loop, and the measurement may be performed based on the value of the pressure sensor.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the state of the normal purification mode, and the portion indicated by the dotted line in the figure is a non-operational one in this mode. In FIG. 1, bath water in a bathtub (not shown) enters the bath water purification device from the suction port 24 by the operation of the main pump 20, passes through the hair catcher 23, and switches the switching valve 27 via the main pump 20. Then, it is filtered in the filtration tank 21. The heater 22 heats the water to a predetermined temperature, passes through the switching valve 26, flows out of the discharge port 25 into the bathtub, and is purified by repeating this circulation.

An air vent pipe 1 is provided above the filtration tank 21. The diameter of the air bleeding pipe 1 is made sufficiently large so that air bleeding and pressure bleeding can be performed smoothly and reliably. An electric open / close valve 2 is provided in the air vent pipe 1. The air release pipe 1 is further connected to a pipe 41, connected to the discharge port 25, and opened to a bathtub (not shown). Here, the air bleeding pipe 1 is not connected to a closed loop in the purification device, and is always connected to the outside of the system. Thereby, the air release and the pressure release of the filtration tank 21 can be efficiently performed.

A drain pipe 42 provided with a drainage on-off valve 3 is provided above the filtration tank 21 so that bath water can be drained out of the system. Further, a sub-pump 15 is provided between the hair catcher 23 and the filtration tank 21, and when the main pump 20 is out of order, the operation can be temporarily performed by the sub-pump 15. In addition, 50 and 51 are check valves. Although not shown, an air presence / absence sensor may be provided in the filtration tank 21, and a pressure sensor may be provided in the closed loop.

FIG. 2 shows the configuration of the control device of this embodiment. The control device 30 is mainly composed of a microcomputer, and controls the entire bath water purification device. The control device 30 is provided with a display unit 31 and an operation unit 32, and a user or the like inputs various commands from the operation unit 32. The display unit 31 performs various displays, and various displays and notifications are performed on the display unit 31.

The control device 30 controls the operation of the main pump 20, switches between the normal operation mode and the thermal cleaning mode by controlling the opening and closing of the switching valve 26 and the switching valve 27, controls the heating of the heater 22, and controls the opening and closing of the electric switching valve 2. The opening and closing control of the drainage on-off valve 3 and the operation control of the sub-pump 15 are performed. In addition, at the time of these controls, various displays and announcements are made on the display unit 31.

FIG. 3 shows a state of the air release mode. The control device 30 switches the electric open / close valve 2 to open the air bleeding pipe 1, communicates with the pipe 41, and bleeds the air of the filtration tank 21 from the discharge port 25. The switching of the electric on-off valve 2 may be performed every predetermined time or may be performed based on a detection value from the air presence / absence sensor or the pressure sensor.

As shown in FIGS. 4 and 5, when cleaning the inside of the cleaning device and releasing the pressure at this time, the control device 3
0 switches between the switching valve 26 and the switching valve 27 as shown. Thereby, the bath water circulates from the main pump 20 to the filtration tank 21 through the hair catcher 23 and the sub-pump 15, and further returns from the heater 22 to the main pump 20 through the switching valve 26 and the switching valve 27. At this time, the bath water is heated to a predetermined temperature by the heater 22 and circulates as high-temperature hot water to perform internal cleaning. Then, as shown in FIG. 5, when the electric on-off valve 2 is opened, the discharge port 25 from the air vent pipe 1 through the pipe 41 is opened.
The pressure is released from.

The operation will be described with reference to FIG. The air bleeding instruction and the heat cleaning instruction are checked by operating the operation unit 32 or measuring a predetermined time (step S1,
5). When there is an instruction to release air in step S1, the control device 30 controls the electric on-off valve 2 to open it (step S2). As a result, the air accumulated in the upper part of the filtration tank 21 is discharged from the discharge port 25 to the outside of the system via the air vent pipe 1 and the pipe 41. When the air bleeding is completed by measuring the elapse of a predetermined time or by an operation (step S3), the electric on-off valve 2 is closed and the operation returns to the normal operation (step S4). This air bleeding operation may be a chronological process such as performed once every predetermined time.However, a sensor is provided at the top of the tank to determine whether or not there is air, and the sensor is constantly monitored and opened when air exceeds a predetermined amount. In addition, it is more desirable to perform a process of closing when a predetermined position has been reached, and thus a process without waste can be surely performed. If there is no air bleeding instruction in step S1 and there is a heat cleaning instruction in step S5, the controller 30 switches the switching valve 26 and the switching valve 27 as shown in FIG. Is raised to a predetermined temperature (step S7), and thermal cleaning is performed. During the thermal cleaning, the pressure in the closed loop increases with the temperature rise, so it is necessary to release the pressure in the closed loop once or several times. Therefore, the control device 30 controls the electric on-off valve 2 to open (step S8). Thus, the pressure increase during the thermal cleaning can be released from the discharge port 25 to the outside of the system via the air vent pipe 1 and the pipe 41. During this pressure releasing operation, the pump is stopped. If the pump is not stopped, the hot water in the closed loop whose temperature has been increased will flow into the bathtub. When the thermal cleaning is completed by measuring the elapse of a predetermined time or performing an operation (Step S
9) Return the switching valve 26 and the switching valve 27 to the normal operation state, close the electric open / close valve 2, and return to the normal operation (step S10). The pressure release at the time of this thermal cleaning may be performed as a lapse of time for a predetermined time. It is.

In the embodiment described above, the air accumulated in the filtration tank 21 can be reliably removed by the air vent pipe 1 and the electric on-off valve 2 provided above the filtration tank 21. In addition, there is an effect that internal pressure can be released at the time of thermal cleaning.

[0014]

As described above, according to the bath water purifying apparatus of the present invention, air bleeding and pressure bleeding can be surely performed, and there is an effect that smooth and safe operation can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing a control device according to one embodiment of the present invention.

FIG. 3 is a schematic diagram showing the operation of one embodiment of the present invention.

FIG. 4 is a schematic view showing another operation of the embodiment of the present invention.

FIG. 5 is a schematic view showing another operation of the embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the embodiment of the present invention.

FIG. 7 is a schematic diagram showing a configuration of a conventional technique.

[Explanation of symbols]

1: Piping for air release, 2: On-off valve for electric power, 3: On-off valve for drainage, 15: Sub-pump, 20: Main pump, 21:
Filtration tank, 22: heater, 23: hair catcher,
24: suction port, 25: discharge port, 26: switching valve, 2
7: switching valve, 30: control device, 31: display unit, 3
2: operation unit, 40: pipe, 41: pipe, 42: drain pipe,
50: check valve, 51: check valve.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toru Koyama 1463, Hazamacho, Hachioji-shi, Tokyo Inside the Snake Eye Machine Industry Co., Ltd. (72) Inventor Seiji Amano 1463, Hazamacho, Hachioji-shi, Tokyo Within Kogyo Co., Ltd. (72) Inventor Koichi Asai 1463, Hazama-cho, Hachioji-shi, Tokyo Snake-eye Sewing Machine Co., Ltd. F-term (reference) 4D064 AA11 BF32 BF33 BF34 BF40

Claims (3)

[Claims] 1. A bath water purification device for receiving bath water in a bath tub, subjecting the bath water to predetermined purification treatment, and then discharging the bath water to the bath tub again. A bath water purification device, comprising: a pipe for bleeding air; and an on-off valve provided in the pipe, wherein the pipe is connected to a pipe outside a closed loop. 2. The bath water purifying apparatus according to claim 1, wherein an air presence / absence sensor is provided in the filtration tank, and the on / off valve is controlled by the sensor. 3. The bath water purification device according to claim 1, wherein a pressure sensor is provided in the closed loop, and the value of the pressure sensor controls the on-off valve.