JPH09155338A - Bath water purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately detect the breakage of a protective pipe to prevent the happening of an accident, in a purifying apparatus purifying hot water of a bathtub, by providing the protective pipe housing an UV lamp sterilizing bath water so as to cut off the same from bath water and detecting moisture produced by the breakage of the protective pipe to detect the breakage of the protective pipe. SOLUTION: In a bath water purifying apparatus, bath water is pumped up by a circulating pump to be filtered and subsequently sterilized by a sterilizing device and heated to a specified temp. to be returned to a bathtub. The sterilizing device is equipped with an the UV lamp 40 and this lamp is covered with a protective pipe 41 to be housed in a jacket 42 and bath water flows in from the bath water inlet 43 provided on one end side of the jacket 42 to be discharged from the bath water outlet 44 provided on the other end side thereof. In this case, an upper chamber 46 is demarcated by the seal part 45 sealing one end sides of the ultraviolet lamp 40 and the protective pipe 41 and a moisture sensor is provided herein. When the protective pipe 41 is broken, bath water penetrating into the upper chamber 46 is detected by the operation of the circulating pump.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bath water cleaning device.

[0002]

2. Description of the Related Art In recent years, bath water in a bathtub is pumped up by a circulation pump to forcibly circulate in a circulation path provided with various cleaning treatment equipment to purify the bathwater and jet it again into the bathtub. Bath water cleaning devices are in widespread use. This bath water purifier is equipped with a circulation pump for circulating hot water, a filtration device for purifying dirt, an ultraviolet sterilizer for sterilization, and processing equipment such as a heater for keeping the hot water at an appropriate temperature. Has been done.

[0003]

The ultraviolet sterilizer has an ultraviolet lamp housed in a protective tube. However, since the protective tube is made of quartz glass so that ultraviolet rays can pass through it, shock and maintenance during transportation and maintenance are required. There is a risk of cracking. If the protective tube breaks, broken glass fragments will be exhaled into the bathtub, which is very dangerous.Therefore, the operation of the main unit of the device should be stopped promptly, and the user had a crack in the protective tube through the display device. Need to inform. On the other hand, when detecting a crack in this protective tube with a water drop sensor that detects humidity and moisture by increasing the electrical resistance value, if the water drop sensor is exposed to water even if the protective tube is not cracked, a false detection of a crack will occur. There is a problem. It is unlikely that the water drop sensor will be splashed with water under normal operating conditions, but if the water drop sensor gets wet during maintenance of the protective tube, or if water is accidentally applied to the sterilizer when the device body is filled with water. If it does, the water drop sensor will also get wet. Further, if the connector of the water drop sensor is forgotten to be connected after the maintenance of the protective tube is finished, the resistance value becomes high and the same detection as wetness is obtained. Therefore, although the protective tube is not broken, the crack of the protective tube is displayed on the display device, and the operation of the apparatus main body is stopped. An object of the present invention is to solve the above-mentioned problems of the conventional technology.

[0004]

In order to achieve the above object, the present invention relates to a bath water cleaning apparatus for circulating hot water in a bath to clean the bath water, and an ultraviolet lamp for sterilizing the circulating bath water. A means for sterilization, which has a protection tube that shields the ultraviolet lamp from the bath water and accommodates it, a means for detecting water due to cracking of the protection tube in the sterilization means, and a means for detecting the same. Means for determining whether or not the protective tube is cracked from the detection signal from the means and the operating state of the cleaning device are provided. When the moisture is detected by the means for detecting, the means for determining determines whether or not the protective tube is cracked based on the operating state of the cleaning device. For example, it is common for the means for detecting to output a detection signal when the means for detecting during maintenance gets wet or the connector is disconnected. Sometimes, it is possible to make a judgment different from cracking of the protective tube. It is desirable that the means for making a judgment is configured to notify the user by means for making a notification such as a display when a judgment different from the cracked protective tube is made.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the bath water in the bath tub 1 is pumped up by a circulation pump 2, filtered by a filtration device 3, then sterilized by a sterilization device 4, the temperature is detected by a temperature sensor 6, and a predetermined temperature is reached by a heater device 7. After being heated, it is returned to the bathtub 1.

As shown in FIG. 2, the sterilization device 4 is provided with an ultraviolet lamp 40, and a protective tube 41 is covered thereover. The ultraviolet lamp 40 and the protective tube 41 are housed in a jacket 42. Bath water flows in from a bath water inlet 43 provided at one end of the jacket 42 and a bath water outlet 44 provided at the other end. The bath water is discharged from here. The bath water is emitted from the ultraviolet lamp 40 while flowing from the bath water inlet 43 to the bath water outlet 44, and the protection tube 41
It is designed to be sterilized by ultraviolet light that passes through. The ultraviolet lamp 40 and one end side of the protection tube 41 are sealed and held by a seal part 45, and the seal part 45 forms an upper chamber 46 at one end side of the jacket 42. In this upper chamber 46, the ultraviolet lamp 40
Is connected to the control device 8 via a lead wire 47.

The upper chamber 46 is also provided with a moisture sensor 5 so that when the protective pipe 41 is broken, the bath water entering the upper chamber 46 through the gap formed with the seal portion 45 can be detected. Has become. Although various types of moisture sensors 5 can be adopted, in this embodiment, a sensor mainly composed of an element having a property that electric resistance changes due to contact with water or an increase in humidity is used. The detection signal of the moisture sensor 5 is also input to the control device 8 via the lead wire 50.

The control device 8 is mainly composed of a microcomputer, and controls the circulation pump 2 and the heater device 7 by a temperature signal from the temperature sensor 6 based on a command from the operating device 9 or the like. There is. Further, the control of the sterilizer 4 is also performed at the same time. It also sends a signal to the display device 10 to execute various displays to the user. The moisture detection signal from the moisture sensor 5 is input to the control device 8 and displayed on the display device 10. When the controller 8 receives the moisture detection signal from the moisture sensor 5 when the device is turned on or when the operation is stopped,
The leakage of the bath water due to the crack of the protection tube 41 is not determined, but the wetness of the moisture sensor 5 at the time of maintenance or the disconnection of the moisture sensor 5 and the lead wire 50 is determined.
Based on this determination, the control device 8 causes the moisture sensor abnormality display 11
Is turned on to notify the user of the abnormality of the moisture sensor 5. At the same time, the control device 8 does not accept an operation command from the operation device 9 and prevents the operation of the device from starting. On the other hand, when there is a moisture detection signal from the moisture sensor 5 when the power of the device is not turned on or when the operation is not stopped, the control device 8 determines that the protection pipe 41 is cracked, lights the protection pipe cracking display 12, and prompts the user. It calls attention. At the same time, the operation of the circulation pump 2 is stopped to prevent glass fragments from flowing into the bath 1. Further, the operation of the heater device 7 and the sterilization device 4 is also stopped, and the operation command from the operation device 9 is not accepted. When the water content detection signal from the water content sensor 5 disappears, the control device 8 cancels the water content sensor abnormality display 11 if it is being displayed, and the operation can be started. FIG.
[Fig. 6] is a flowchart showing the operation of the control device 8 described above.

In the above structure, when the protective tube 41 in the sterilizing device 4 is cracked, the protective tube cracking display 12 is displayed, and the circulating pump 2, the sterilizing device 4, and the heater device are displayed. Since the operation of the device is stopped by stopping 7, the accident due to the broken protective tube 41 can be prevented in advance. In addition, the moisture sensor 5 gets wet during maintenance, and the moisture sensor 5 and the lead wire 50
Even if the connection is defective, the control device 8 determines that the moisture sensor 5 is abnormal at the time of turning on the power and when the operation is stopped, and causes the moisture sensor abnormality display 11 to display that fact. It becomes possible to control.

[0010]

As described above, according to the apparatus for cleaning bath water of the present invention, it is possible to accurately detect cracks in the protective tube in the sterilizing means, prevent accidents, and efficiently prevent malfunctions. It will be possible.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structure of the sterilization device 4 according to the embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the control device 8 according to the embodiment of the present invention.

[Explanation of symbols]

1: Bathtub, 2: Circulation pump, 3: Filtration device, 4: Sterilization device, 5: Moisture sensor, 6: Temperature sensor, 7: Heater device, 8: Control device, 9: Operating device, 10: Display device, 1
1: Water sensor abnormality display, 12: Protective tube crack display, 4
0: ultraviolet lamp, 41: protective tube, 42: jacket,
43: bath water inlet, 44: bath water outlet, 45: seal part, 4
6: upper chamber, 47: lead wire, 50: lead wire.

Claims (3)

[Claims] 1. A bath water cleaning device for circulating hot water in a bathtub for cleaning, and an ultraviolet lamp for sterilizing the circulating bath water, and a protective tube for shielding the ultraviolet lamp from the bath water and storing it. A means for sterilizing, a means for detecting water due to cracking of a protective tube in the means for sterilizing, a detection signal from the means for detecting, and an operating state of the cleaning device. From the above, there is a means for judging whether or not the protective tube is cracked, and a bath water cleaning device equipped with. 2. The judgment means makes a judgment different from the protection tube crack when a detection signal is received from the detection means at the time of turning on the power and at the time of stopping the operation. Bath water purifier. 3. The apparatus for purifying bath water according to claim 2, wherein the means for making a judgment further comprises means for making a notification to that effect when the judgment is different from cracking of the protective pipe. .