JPH10128320A - Circulating type warm bath apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circulating type warm bath apparatus capable of extending the life of a UV sterilizing lamp and capable of efficiently sterilizing hot water. SOLUTION: In a circulating type warm bath apparatus wherein hot water 3 stored in a bathtub 2 is sucked up from a suction unit 4 by operating a circulating pump 1 and the sucked-up hot water 3 is again blown off to the bathtub 2 from a blowoff unit 8 through a filter 6 and a heater 7 to be circulated, a UV sterilizing device 5 sterilizing hot water 3 is provided to a part in the circulating route of hot water 3 and the operation of the UV sterilizing device 5 is stopped during the operation of the heater 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art The sterilizing effect of a UV germicidal lamp has been well known and has been applied to a circulating hot water bath.

[0002]

However, the life of a UV germicidal lamp is generally said to be 3,000 to 4,000 hours. Since the time is long, replacement due to the life of the UV germicidal lamp becomes frequent, running costs are increased, and the replacement operation is complicated.

[0003] It is an object of the present invention to solve the above-mentioned problems and to provide a circulating type hot water bath capable of extending the life of a UV germicidal lamp and efficiently sterilizing hot water.

[0004]

Means for Solving the Problems To solve the above problems, a circulating hot water bath according to the present invention operates a circulating pump to suck hot water stored in a bathtub from a suction unit,
In a circulating hot water bath in which the sucked hot water is blown out again from a blowing unit via a filtering device and a heating device to a bathtub to circulate the hot water, a UV sterilizing device for sterilizing hot water is provided in a part of the circulation path of the hot water. And the operation of the UV sterilizer is stopped during the operation of the heating device.

[0005] It is preferable that the operation of the UV sterilizer be stopped for a predetermined period of time until the function of microorganisms in the filter is restored at the start of use of the circulating hot water bath and after the filter is cleaned.

[0006]

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

FIG. 1 shows a circulation path of hot water of a circulating hot water bath. The circulating hot water bath sucks hot water 3 in a bathtub 2 from a suction unit 4 by operating a circulating pump 1. The hot water 3 is sent to the filtering device 6 via the UV sterilizing device 5, purified by the filtering device 6, warmed by the heating device 7, and blown out of the blowing unit 8 into the bathtub 2 again.

As shown in FIG. 2, the UV sterilizer 5 includes a cylindrical container 10 made of synthetic resin such as plastic.
And a UV germicidal lamp 11 disposed inside the container 10, and the hot water 3 sent from the water inlet 12 formed at the lower part of the container 10 rises while being irradiated with the ultraviolet rays emitted from the UV germicidal lamp 11. And it is comprised so that it may flow into the circulation path again from the water outlet 13 formed in the upper part. The UV germicidal lamp 11 is shielded from the hot water 3 passing through the container 10 by a quartz tube 14 that transmits ultraviolet light.

The lighting time of the UV germicidal lamp 11 is controlled by a control device 15. The control device 15 is constituted by a microprocessor (CPU),
It is configured to control the overall operation of the circulating hot water bath based on a control program stored in a built-in memory. The control device 15 includes a hot water temperature sensor 16
The temperature of the hot water 3 is constantly measured, and the heater 13 in the heating device 7 is controlled so that the measured temperature always becomes the set temperature, and the lighting time of the UV germicidal lamp 11 is controlled.

As shown in the time chart of FIG. 3, the lighting time of the UV germicidal lamp 11 is controlled so as to be turned on intermittently. Is controlled to stop.

According to the circulation type hot water bath having the above-described structure, the UV germicidal lamp 11 is intermittently turned on by the control device 15 and the UV germicidal lamp 11 is energized while the heater 17 is energized.
Is not turned on, the UV germicidal lamp 11 is not continuously energized, and the life of the UV germicidal lamp 11 can be extended. When the heater 17 is energized, U
Even if the V sterilizing lamp 11 is not turned on, the heat sterilization by the heat of the heater 17 is performed to supplement the sterilization, so that the hot water can be sterilized efficiently.

The control device 15 controls the UV germicidal lamp 11 not to light for a predetermined period (for example, one week) by pressing a predetermined button on a control panel (not shown). For a predetermined button, a predetermined operation button is pressed for a predetermined time so as not to perform an erroneous operation.
What is necessary is just to press two operation buttons simultaneously.

As a result, the organic matter is not sufficiently decomposed until the biobalance is maintained, for example, at the start of use or after the filtration device is cleaned, so that the hot water may become cloudy.
By turning on the UV germicidal lamp 11 from the beginning, it is possible to prevent the growth of biotechnology from being delayed, and to avoid prolonging the period during which clouding occurs.

[0014]

According to the first aspect of the present invention, by controlling the lighting of the UV germicidal lamp, the UV germicidal lamp is not always energized, and the life of the UV germicidal lamp can be extended. Since heat sterilization is performed by the heater even when the UV sterilizing lamp is not turned on, running costs can be reduced and hot water can be sterilized efficiently.

According to the second aspect of the present invention, the operation of the UV sterilizer is stopped for a predetermined period until the function of the microorganisms in the filter is recovered, such as at the start of use of the circulating hot water bath and after cleaning of the filter. Therefore, the period during which white turbidity or the like due to organic matter occurs can be reduced in a short time without hindering the recovery of the function of the microorganism.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circulation path of hot water in a circulation type hot water bath according to the present invention.

FIG. 2 is a sectional view of a main part showing a configuration of a UV sterilizer.

FIG. 3 is a timing chart illustrating operation states of a UV germicidal lamp and a heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circulation pump 2 Bathtub 3 Hot water 5 UV sterilizer 6 Filtration device 7 Heating device 11 UV sterilizer lamp 15 Controller 17 Heater

Claims (2)

[Claims] 1. A circulation system in which a circulation pump is operated to draw hot water stored in a bathtub from a suction unit, and the drawn hot water is blown out from a blowout unit to a bathtub again through a filtering device and a heating device to circulate the hot water. A circulation type hot water bath, wherein a UV sterilizer for sterilizing hot water is provided in a part of the hot water circulation path, and the operation of the UV sterilizer is stopped during operation of the heating device. 2. The method according to claim 1, wherein the operation of the UV sterilizer is stopped for a predetermined period until the function of microorganisms in the filter is restored at the start of use of the circulating hot water bath and after cleaning of the filter. The circulating hot water bath according to claim 1.